• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    A drying oven for drying plates, comprising: a displacement system (102) with at least two closed chains, and with transverse profiles (107) to which support profiles (108) are attached, provided to receive plates (101) from a supply system (112) defining a cavity (130), and wherein the drying oven further comprises a first detection system to determine whether the support profile (108) to be moved through the cavity (130) first moves through a predefined passage (W; 133), and to generate a first warning signal when it is not. The first detection system comprises at least two hinged elements (125), which are arranged at a predetermined distance from each other to define the at least one predefined passage (W), and comprises at least one sensor or detector or switch capable of detecting whether the at least one support profile (108) has touched or touched at least one hinged element (125) or has approached less than a predetermined distance. The first detection system is provided for generating the first warning signal based on at least one signal from the at least one sensor or detector or switch.
    公开号:BE1025549A9
    申请号:E20180050
    申请日:2018-04-24
    公开日:2019-04-15
    发明作者:Patrick Vanleuven
    申请人:Etex Building Performance Nv；
    IPC主号:
    专利说明:

    DEVICE FOR DRYING PLATES
    Domain of the invention
    The present invention generally relates to drying ovens suitable for drying plates, for example of calcium silicate hydrate (CSH) based plates.
    BACKGROUND OF THE INVENTION
    Furnaces suitable for drying plates, for example calcium silicate hydrate-based plates, hereinafter referred to as CSH-based plates, with best known examples being Xonotlite and Tobermorite-based plates, are known in the art.
    The possibly CSH-based plates are usually dried vertically while standing up. The present invention relates to the latter type of drying ovens.
    Ovens according to the present invention have a displacement system 102 with upright support profiles 108 mounted on transverse profiles 107. Furthermore, such ovens generally have a receiving mechanism at their entrance 103 for receiving plates to be dried from a supply system 112 and at their exit 104 a delivery system for the delivery of dried plates. In the type of furnaces according to the present invention, the support profiles 108 are not only used for supporting the plates when they are transported from the entrance 103 to the exit 104, but the support profiles 108 are also used to receive new plates 101 from the supply system 112. To this end, the support profiles 108 are inserted between protruding parts 123 of the supply system 112, and the support profiles 108 at the exit 104 of the oven are inserted between protruding parts 124 of the take-off system 113. When such support profile 108 is partially released, or bent is or is otherwise lost from position, this support profile 108 can damage the conveying system 102 in the oven 100 and / or the supply system 112 and / or the take-off system 113, often resulting in a prolonged standstill of the entire drying oven.
    Summary of the invention
    It is an object of the present invention to provide a drying oven suitable for drying plates, for example calcium silicate hydrate (CSH) based plates, with a reduced risk of downtime and / or with a reduced downtime.
    BE2018 / 0050
    More specifically, it is an object of the present invention to provide such a drying oven with a displacement system, as well as a method of advancing such a displacement system, with a reduced risk of standstill and / or with a reduced downtime.
    These and other objects are achieved by a drying oven and a method according to embodiments of the present invention.
    In a first aspect, the present invention provides a drying oven for drying plates, for example calcium silicate hydrate (CSH) based plates, the oven comprising a plurality of transverse profiles to which at least two support profiles are each attached which are provided for receiving plates from a supply system which defines a hollow space. The hollow space or spaces are the hollow spaces between the projecting parts of the supply system. The drying oven further comprises a first detection system to determine whether the support profile to be moved through the cavity can first move through at least one predefined passage in the detection system, and to generate a first warning signal when the support profile does not pass through the cavity (displaced. The at least one predefined passage has a profile corresponding to a transverse profile of the at least one cavity and has dimensions corresponding to the dimensions of the at least one cavity less a predetermined clearance. The first detection system comprises at least two hinged elements arranged at a predetermined distance from each other to define the at least one predefined passage and comprising at least one sensor or detector or switch capable of detecting whether the at least one support profile has at least one hinged element ent has touched or has touched or approached less than a predetermined distance, and wherein the first detection system is provided for generating the first warning signal based on at least one signal from the at least one sensor or detector or switch.
    According to embodiments, the hinged elements can be hinged plates.
    According to embodiments, the pivotal elements can be pivotable rod profiles, these rod profiles can be brackets or frames pivotally arranged around a pivot axis.
    BE2018 / 0050
    According to embodiments, this first detection system may be provided to generate a first warning signal when it is detected that the at least one support profile is proceeding outside the at least one defined passage.
    The displacement system can comprise at least two closed chains for displacing the plurality of transverse profiles. The support profiles are provided to, at the entrance to the oven, take up plates to be dried from a supply system and transfer them to the displacement system.
    It is an advantage of using the first detection system that allows testing whether one (or more) of the support profiles has been shifted or bent or released such that it is (partially) outside a virtual channel, which would give rise to collision with the supply system or collection system. By detecting this situation early, (usually very serious) damage to the drying oven and / or to the supply system and / or to the collection system can be prevented.
    The predefined passage defines, as it were, a virtual channel, the boundary profile, the moving space or the gabarit. In a drying oven according to the present invention, it is repeatedly checked whether the support profiles are still within their permitted movement space.
    According to embodiments, each transverse profile can comprise at least three or at least four support profiles.
    According to embodiments, the supply system may comprise at least two cavities through which at least a portion (e.g. an end) of two support profiles must move.
    The support profile moves outside the predefined passage, it is of course meant that at least a part of the support profile moves outside the predefined passage. In practice, this is usually the end of the support profile.
    In one embodiment, the at least one predefined passage has a profile corresponding to a transverse profile of the at least one cavity, and has dimensions corresponding to the dimensions of the at least one cavity less a predetermined clearance.
    BE2018 / 0050
    The predetermined clearance is, for example, in the range of 1 mm to 50 mm, e.g. in the range of 2 mm to 30 mm, and is, for example, approximately 5 mm, or approximately 10 mm, or approximately 15 mm or approximately 20 mm. , or about 25 mm.
    According to embodiments, the drying oven may further comprise a control unit for controlling the displacement system, for example stopping the movement system of this displacement system; and the control unit is connected to the first detection system for receiving the first warning signal; and the control unit is configured to prevent the displacement system from moving further, e.g., to stop or prevent the displacement system from taking a further step in a discontinuous movement, when the warning signal indicates that the at least one support profile is outside the at least one predetermined defined passage.
    It is an advantage of such a drying oven that it is provided with an automatic emergency stop, which automatically stops the movement mechanism when a support profile is bent or shifted too much to the left or to the right. In this way, the support profile can be prevented from damaging the supply system or collection system, so that the entire oven would have to be stopped for several days or even weeks for repairs.
    The first detection system comprises at least two hinged plates, which are arranged at a predetermined distance from each other to define the at least one predefined passage, and at least one sensor or detector or switch capable of detecting whether the at least one support profile is at least touches or has touched one fixed or hinged plate or has approached less than a predetermined distance; and the first detection system is provided for generating the first warning signal based on at least one signal from the at least one sensor or detector or switch.
    The plates can be, for example, rectangular, and by placing them, for example, 50 mm apart, a gap of 50 mm is defined through which the support profile can move.
    As long as the support profile is in a correct position with respect to the transverse profile, and as long as it moves within the permitted virtual channel (aka gabarit), it will not come into contact (eg electrical or mechanical contact) with the
    BE2018 / 0050 hinged plates, and the first warning signal will indicate this safe state.
    However, when a portion of the support profile moves outside the permitted virtual channel, it will come into contact (e.g., electrical or mechanical contact) with one or both of the hinged plates, and the first warning signal will indicate this unsafe or erroneous condition.
    As long as the support profile is in a correct position with respect to the transverse profile, and as long as it moves the allowed virtual channel (alias gabarit), it will not come into contact with the hinged wings or plates, and the first warning signal will be this safe state view.
    However, when a portion of the support profile moves outside the permitted virtual channel, it will come into contact with one or both of the hinged wings, and the first warning signal will indicate this unsafe or erroneous state.
    According to embodiments, the at least one sensor or detector or switch may be selected from the group consisting of: a detector for detecting electrical or mechanical contact, a proximity detector, a proximity switch, a vibration detector, an accellerometer.
    Some sensors or detectors or switches require physical (eg mechanical or electrical) contact. Such sensors or detectors have the disadvantage that they cannot see the problem coming, and can themselves be damaged if such contact (usually with a reasonable impact) takes place effectively. The output of such sensors or detectors or switches is often binary: either there is no contact, and then everything is OK, or then contact is, and then it is wrong.
    The use of a proximity detector or proximity switch offers the additional advantage that they do not need physical contact, and that they can often give a value that increases (or decreases) as time passes. In this way it is often possible to observe an evolution or trend, on the basis of which even a prediction can be made of when a deviation becomes problematic. This offers the advantage that any imminent recovery can be temporarily postponed until the next planned (eg annual or semi-annual) maintenance. In this way, costs can be further saved.
    According to embodiments, the plates can be CSH-based plates, for example xonotlite plates or tobermorite plates.
    BE2018 / 0050
    In a second aspect of the present invention, there is provided a method of advancing a displacement system of a drying oven according to the first aspect, which comprises the step of: detecting by means of a first detection system, or the at least one support profile passing through the must move at least one cavity, can first move through the at least one predefined passage; generating a first warning signal when it is detected that the at least one support profile moves at least partially outside the at least one defined passage.
    According to embodiments, the method may further comprise the steps of: if the result of the detection is that the support profile can move correctly through the at least one predefined passage, further driving the displacement system, for example via the movement system, for example.
    According to embodiments, the method may further comprise the step of: receiving by means of the at least two support profiles a plate to be dried, for example a CSH-based plate, from the supply system and transferring the plate to the displacement system.
    According to embodiments of the method performed on a drying oven with the aforementioned control unit, the method may further comprise the step of: preventing movement, e.g. stopping, of the displacement system, e.g. stopping the movement system or preventing making a further movement in the event that a discontinuous movement is made when the first warning signal indicates that the at least one support profile is partially outside the at least one predefined passage, before the support profile enters the first cavity.
    Specific and preferred aspects of the invention are included in the appended independent and dependent claims. Features of the dependent claims can be combined with features of the independent claims and with features of other dependent claims as appropriate and not merely as explicitly stated in the claims.
    To summarize the invention and the advantages achieved over the prior art, certain objects and advantages of the invention have been described above. It is of course understandable that not all of these
    BE2018 / 0050 objectives or advantages can be achieved by any specific embodiment of the invention. Thus, for example, those skilled in the art will recognize that the invention may be embodied or embodied in a manner that has one advantage or a group of advantages as provided herein, without necessarily achieving other objectives or benefits that may be offered or suggested herein.
    These and other aspects of the invention will be apparent from and elucidated with reference to the embodiment (s) described below.
    Brief description of the figures
    The invention will now be further described, by way of example, with reference to the accompanying drawings in which:
    FIG. 1 is a schematic representation (in side view) of a drying oven for drying calcium silicate hydrate (CSH) -based plates comprising a displacement system, and at the entrance of the oven a supply system and at the outlet of the oven a take-off system, known in the prior art position Technic.
    FIG. 2 is a perspective view of the system shown in FIG. 1.
    FIG. 3 is a top view of a variant of the system shown in FIG. 2, wherein a transverse profile with three support profiles is shown, and wherein at least one of the three support profiles moves at the entrance of the oven into the hollow space between two projecting parts (e.g. conveyor belts) of the supply system. In a similar way, one of the support profiles is located at the exit of the oven, in the hollow space between two projecting parts (e.g. conveyor belts) of the take-off system.
    FIG. 4 shows an example of a first problem that may occur when one of the support profiles is not correctly positioned. In the example of FIG. 4, the middle support profile is bent or turned, but still located in the plane defined by the other support profiles attached to the same transverse profile.
    FIG. 5 shows an example of a first detection system as part of a drying oven according to an embodiment of the present invention, which uses a plurality of hinged plates. When the support profiles are correctly positioned and oriented, they will move between the hinged plates without touching them.
    FIG. 6 shows that when the support profiles between the hinged plates of
    FIG. 5 are passed without touching them, they are normally also between the projecting parts
    BE2018 / 0050 (eg conveyor belts) of the supply system or collection system will move without touching or damaging it.
    FIG. 7 shows a detection system in which the support profiles pass between downwardly hinged plates without touching them.
    FIG. 8 shows a detection system in which the support profiles pass between downwardly hinged windows without touching them.
    The figures are only schematic and non-limiting. In the figures, the dimensions of some parts may be exaggerated and not represented to scale for illustrative purposes. The dimensions and the relative dimensions sometimes do not correspond to the current practical embodiment of the invention. Reference numbers in the claims may not be interpreted to limit the scope of protection. In the various figures, the same reference numbers refer to the same or similar elements.
    Detailed description of embodiments of the invention
    The present invention will be described with reference to particular embodiments and with reference to certain drawings, however, the invention is not limited thereto, but is only limited by the claims.
    It is to be noted that the term comprising, as used in the claims, is not to be interpreted as being limited to the means described thereafter; this term does not exclude other elements or steps. It can therefore be interpreted as specifying the presence of the listed characteristics, values, steps or components referred to, but does not exclude the presence or addition of one or more other characteristics, values, steps or components, or groups thereof. Thus, the scope of the term a device comprising means A and B should not be limited to devices that consist only of components A and B. It means that with respect to the present invention, A and B are the only relevant components of the device.
    Reference throughout this specification to one embodiment or an embodiment means that a specific feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, occurrence of the expressions in one embodiment or in an embodiment at various places throughout this specification is not necessary
    BE2018 / 0050 all need to refer to the same embodiment, but can do so. Furthermore, the specific features, structures, or characteristics may be combined in any suitable manner, as would be apparent to those skilled in the art based on this disclosure, in one or more embodiments.
    Similarly, it should be appreciated that in the description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or description thereof for the purpose of streamlining disclosure and assisting in understanding one or several of the various inventive aspects. In any case, this method of disclosure should not be interpreted as a reflection of an intention that the invention requires more features than explicitly mentioned in each claim. The claims following the detailed description are hereby explicitly included in this detailed description, with each independent claim as a separate embodiment of the present invention.
    Furthermore, while some embodiments described herein include some, but not other, features included in other embodiments, combinations of features of different embodiments are intended to be within the scope of the invention, and constitute different embodiments, as would be understood by those skilled in the art . For example, in the following claims, any of the described embodiments can be used in any combination.
    Numerous specific details are set forth in the description provided here. It is, however, understood that embodiments of the invention can be practiced without these specific details. In other cases, well-known methods, structures and techniques have not been shown in detail to keep this description clear.
    In the present invention, the terms transport system and displacement system are used as synonyms.
    In the present invention, the terms oven and drying oven are used as synonyms.
    FIG. 1 shows a schematic representation of a known drying oven 100 suitable for drying calcium silicate hydrate (CSH) based plates 101 in side view, and FIG. 2 in perspective view. The best known examples of CSH-based plates are
    BE2018 / 0050 may include plates which include as CSH Xonotlite and / or Tobermorite. It has been known for years how such plates can be manufactured. The drying process must be forced because otherwise it will take too much time.
    In contrast to drying cement plates, which are usually air-dried, CSH-based plates can be dried in a type of oven as shown in FIG. 1 and FIG. 2, wherein the plates are substantially upright, since the plates 101 are already sufficiently strong after being formed to be able to stand upright, but are not yet dry and cured. Such drying usually takes place at a temperature in the range of 100 ° C to 170 ° C, preferably between 120 ° C and 150 ° C, and the plates usually remain in the oven for a period of about 10 to 20 hours so that the excess water is evaporated.
    The furnaces 100 typically include a displacement system 102 (also called a conveying system) with two or more closed chains 105, 106 spaced apart (e.g., about 2.5 m apart) in the depth direction of the plane of FIG. . 1, and mounted on a plurality of gears that guide the chains. The gear wheels are preferably driven stepwise. Only one chain 105 and two such sprockets are shown in FIG. 1, in particular one gear 116 at the input 103 and one gear 117 at the output 104 of the drying oven 100, but of course additional gears or other supporting means can be arranged between them.
    The at least two chains 105, 106 are interconnected by means of a plurality of transverse profiles 107, e.g. in the form of substantially flat metal plates. As the chains 105, 106 rotate, these transverse profiles 107 assume different positions. For example, when a cross section is at the top or bottom, it will be oriented substantially parallel to a horizontal plane, but near the oven entrance 103 (left in FIG. 1) and near the oven exit 104 (right in FIG. 1) ) these plates make a rotational movement of 180 ° about the axis of the gear wheels 116, 117 shown. Use is made of this rotation to receive new plates to be dried in the conveyor system 102 and to bring them into an upright position, and to bring already dried plates to a horizontal position and remove them from the conveyor system 102 on ways known in the art.
    A plurality of support profiles 108 are attached to the transverse profiles 107. These support profiles 108 have a longitudinal direction that forms a first angle α with respect to
    BE2018 / 0050 a perpendicular to the plane defined by the transverse profile 107 to which the respective support profiles 108 are attached, the first angle α being in the range of 5 ° to 15 °, e.g. in the range of 5 ° to 10 °, and for example, is approximately 6.5 °. In other words, the CSH-based plates 101 to be dried are transported substantially vertically through the oven 100, or rather, they are transported slightly sloping backwards through the oven, supported on their back side 109 by the support profiles 108.
    Known furnaces have a height of, for example, 3 to 5 m, and a length of, for example, 20 to 30 m. The plates 101 are preferably introduced into the oven at approximately half height, and taken out of the oven, as can be understood from FIG. 1.
    FIG. 1 also schematically shows a feed system 112 (at an input 103 of the oven) that delivers new CSH-based plates to be dried to an input of the oven, which plates 101 are then transferred to the oven displacement system 102. As shown schematically, new plates to be dried are supplied almost horizontally, e.g. via caterpillars or conveyor belts or chains or rollers or in any other suitable manner. This supply system 112 is not an essential part of the oven 100, but it does work closely with it.
    FIG. 1 also shows schematically a collection system 113 (at an exit 104 of the oven) that discharges dried CSH-based plates from the drying oven. As shown schematically, dried plates are preferably also discharged substantially horizontally.
    As explained above, the displacement system 102 as described above automatically ensures that plates supplied horizontally are brought to an upright, almost vertical position, and held therein over substantially the entire length of the oven, and are brought back to a horizontal position on the oven exit 104.
    Finally, it should be mentioned that the chains 105, 106 in practice do not run continuously, but stepwise. Specifically, a new plate 101 to be dried is repeatedly, e.g. periodically (e.g. every minute) presented to the input 103, where it is transferred to the displacement system 102, and a dried plate is presented to the output 104 at the same time period, where it is removed from the displacement system 102, after which the chains 105, 106 move through one step or stroke, so that a next plate 101 can be presented at the entrance and the exit.
    BE2018 / 0050
    FIG. 2 is a perspective view of the system shown in FIG. 1, but with the CSH-based plates 101 omitted for illustrative purposes. The present invention is mainly directed to the displacement of the support profiles 108 relative to projecting parts 123 of the feed system 112 at the input 103 of the oven, and relative to projecting parts 124 of the take-off system 113 at the output 104 of the oven. When the support profiles 108 are correctly mounted and oriented on the transverse profiles 107, they will neatly move between the projecting parts 123, 124 of the supply system 112 and take-off system 113. In the specific example of FIG. 2, one end of the support profiles 108 will enter the cavities 130, 131 between the projecting parts 123 of the supply system 112 and between the projecting parts 124 of the take-off system 113. It does not matter whether these projecting parts occupy a fixed position relative to the oven, or that they move back and forth in a horizontal direction (Y direction). What is important for the present invention is that at the moment the plate 101 is received at the input 103, or delivered at the output 104, that at least one of the support profiles 108 is located between the projecting parts 123. This is better shown in FIG. 3, in case the protruding parts are conveyor belts or tracks.
    For the sake of completeness, it should be mentioned that the number of support profiles 108 and the number of projecting parts 123, 124, for example caterpillars, is not important for the present invention, as long as at least one of the support profiles 108 moves between the projecting parts, for example caterpillars 123. Actually caterpillars are also not essential to the present invention and other supply systems 112 or collection systems 113 such as, for example, a chain system or a system with a plurality of rollers can also be used. For the sake of simplicity of the description, the present invention will be explained with reference to tracks, without, however, limiting the invention thereto.
    FIG. 3 is a top view of a variant of the system shown in FIG. 2, wherein the transverse profiles 107 comprise three support profiles 108, and wherein at least one of the three support profiles 108 moves, at the entrance 103 of the furnace, into the hollow space 130 between two projecting parts 123 (e.g. caterpillar tracks) of the supply system 112 In the specific example shown in FIG. 3, the middle support profile 108b moves (albeit temporarily) into the hollow space 130 between the two tracks 123, and the two other support profiles 108a, 108c move next to or outside the two tracks 123a, 123b.
    BE2018 / 0050
    When the support profiles 108 are firmly attached to the transverse profiles 107, and are not bent, no problems arise in this regard.
    FIG. 4 shows an example of the problem that can occur when one of the support profiles 108 is not positioned correctly. In the example of FIG. 4, the middle support profile 108b is bent or pivoted, but it may still be located in the plane defined by the other support profiles 108a, 108c attached to the same transverse profile 107.
    Various causes can be the cause of such a wrong orientation. One of the possible causes is due to the difference in temperature at the top and bottom of the oven, as a result of which thermal stresses can arise, as a result of which, for example, nuts and bolts of screwed support profiles 108 can come loose. Another cause is due to the impact on the support profiles 108 when a new plate 101 to be dried is received, whereby bolts and nuts can also come loose, but also fatigue can occur and / or a weld can crack. Other causes are also possible.
    Referring back to FIG. 4, it will be appreciated that when one (or more) of the support profiles 108 assumes an incorrect position, and the displacement system 102 rotates one position farther, the support profile 108b with full force against one of the projecting parts 123 (e.g. tracks) or chains or roller system or the like) of the supply system 112 is struck, with all its consequences, both for the supply system 112 and for the oven's movement system.
    Such problems can cause serious damage to the installation, requiring the drying oven to be shut down, removing all CSH-based plates 101 to provide access to the relocation system, so that repair work can be performed, after which the oven can be restarted . It will be clear that such a standstill entails heavy costs and means a considerable loss of production. The present invention provides solutions to avoid or at least reduce such damage, and to drastically reduce the downtime and / or repair time.
    FIG. 5 shows an example of a first detection system as part of a drying oven according to an embodiment of the present invention.
    BE2018 / 0050
    The first detection system must detect whether the support profile 108 (or support profiles) to be moved through the hollow space 130 of the supply system 112, e.g., through the hollow space 130 between the tracks of FIG. 4, is within an allowed virtual channel.
    The underlying principle of this embodiment of the present invention has similarities with the function of a so-called gabarit from the train slang. When a cross section of a train or wagon or locomotive falls within the gabarit of a certain railway line, this train or wagon or locomotive will not normally come into contact with tunnels or semaphore signals or overhead lines of that railway line.
    In the embodiment of FIG. 5 it is tested whether the support profiles 108 are within a certain allowable space (the gabarit), and if that is the case, it can be assumed that the support profiles 108 will not come into contact with the projections 123 of the supply system 112 (e.g. with the conveyor belts 123).
    This Gabarit is dynamically tested in the present invention, whereby it is checked whether the profiles still fall within the permitted space. This test is preferably carried out in a non-destructive manner, by arranging movable parts in the vicinity of the path that the support profiles 108 will run through. However, this is not always possible, and sometimes the detection system itself will be damaged. Nevertheless, this solution remains much better and much cheaper than damage and the associated standstill of the oven.
    In the embodiment of FIG. 5, a plurality of hingeable elements, which are shown here as hinged plates 125, are provided with a gap W between the hinged plates 125. In FIG. 5, the hinges of the plates 125 may be mounted vertically on the side of the plate furthest away from where the support profile 108 is to pass. Alternatively, the plates 125 may be hinged along their long side by means of hinges 132. In yet another alternative form as shown in FIG. 8, the hinges 129 at the bottom of the plates 128 can be in the horizontal direction. When a correctly positioned support profile 108 passes between the two hinged plates 125, the plates will not move. But when a support profile 108 is oriented obliquely and attempts to pass past the hinged plates 125, then at least one of the two hinged plates 125 will move. By providing the hinged plates with suitable detectors, it can be detected when a support profile 108 moves outside the permitted zone or gabarit, so that the
    BE2018 / 0050 detector detects and displays the hinges of the plate 125, and appropriate measures can be taken. Eg the drying mechanism moving mechanism can then be stopped automatically before the conscious support profile 108 reaches the supply system 112 (and this would be damaged).
    It is an advantage of this embodiment that pivotable plates 125 are provided instead of immovable plates, because in this way damage to the relevant support profile 108 can be limited, as well as damage to the relevant transverse profile 107 to which that support profile 108 is attached. In the best case scenario, a quick intervention is sufficient in which the relevant support profile 108 can immediately be correctly re-attached (eg by screwing or welding), without having to evacuate the entire drying oven, and without replacement or repair of the supply system 112 or collection system 113 .
    FIG. 6 shows that when (at time T1) the support profiles 108 between the hinged plates 125 of FIG. 5 have passed without touching them, they will also move (at a later time T2) between the projecting parts 123, 124 of the supply system 112 or collection system 113 without touching and damaging them. By providing the hinged plates 125, damage to the supply system 112 and / or collection system 113 can therefore be detected and prevented before it occurs.
    In a further or another variant (not shown), the hinged elements are arranged somewhat resiliently, e.g. only clamped on a lower side, and this plate is provided with one or more vibration detectors arranged to detect whether the plate 126 is vibrating after one of the support profiles 108 has come into contact with the plate 126. If desired or necessary, the signal supplied by the vibration detector can be analog or digitally filtered, in order to prevent undesired frequencies, e.g. vibrations due to the chains 105 moving , 106 to filter out. It is to be expected that a metal plate (e.g. of aluminum or copper or steel or stainless steel) with a certain thickness (e.g. 0.5 mm or 0.8 mm or 1.0 mm or 1.5 mm) in the form of a comb (e.g. such as shown in Fig. 7) with a plurality of teeth of a certain length has well-defined natural frequencies. By using known analog or digital filtering techniques, unwanted frequencies can be filtered out. An advantage of this embodiment is that the number of vibration detectors can be limited, because the plate will vibrate upon contact
    BE2018 / 0050 any support profile 108. A disadvantage of this technique is that the detector does not indicate which support profile 108 is outside the permitted virtual channel.
    FIG. 7 shows a variant of the system in which a plurality of plates 128 are used which are hinged relative to a horizontal axis 129. Each of the plates may be hinged separately, and preferably each of the plates has a detector. With this embodiment, it is not only possible to detect erroneous positions of one of the support profiles 108, but this system also allows detecting which support profile 128 is incorrectly positioned, so that an intervention can be processed faster.
    In the embodiments shown above, reference is made to hinged plates. It is clear that these elements do not necessarily have to be plates, but can also be profiled (e.g. bent) rods or tubes. The profiles can be brackets or rectangles (or windows).
    FIG. 8 shows such an alternative to the embodiment of FIG. 7 wherein a plurality of profiled rods, in this case windows 130, are used which are hingedly arranged with respect to a horizontal axis 129. At the moment one of the windows is tilted by a rod 108 which does not pass through the open zone and touches the window, the proxy detector (proximity detector) will no longer detect a frame and generate a signal that can be used to interrupt the oven movement.
    Although specific embodiments of the invention have been described, various modifications are possible, which fall within the scope of the claims, and within the spirit of the present invention.
    For example, it is possible to provide a drying oven with the first detection system (as shown in FIG. 5 and / or FIG. 7) or a variant thereof with a fixed plate and proximity detectors and / or proximity switches. And as explained above, it is even possible to provide several first detection systems with a narrowing passage.
    权利要求:
    Claims (11)
    [1]
    CONCLUSIONS
    A drying oven suitable for drying plates, comprising: a displacement system (102) comprising a plurality of transverse profiles (107) to which at least two support profiles (108) are each secured to receive plates (101) from a feed system (112) defining a cavity (130), the cavity being the cavity (130, 131) between the projecting portions (123) of the feed system (112), and wherein the drying oven further comprises a first detection system to whether the support profile (108) to be moved through the cavity (130) can first move through a predefined passage (W; 133) in the detection system, and to generate a first warning signal when the support profile (108) ) does not move through the cavity (130), the at least one predefined passage having a profile corresponding to a transverse profile of the at least one cavity (130) ), and has dimensions corresponding to the dimensions of the at least one cavity minus a predetermined clearance, the first detection system comprising at least two hinged elements (125) arranged at a predetermined distance from each other to define the at least one predefined passage (W), and comprising at least one sensor or detector or switch capable of detecting whether the at least one support profile (108) touches or has touched at least one hinged element (125) or at less than a predetermined distance and wherein the first detection system is provided for generating the first warning signal based on at least one signal from the at least one sensor or detector or switch.
    [2]
    A drying oven according to claim 1, wherein the hinged elements are hinged plates.
    [3]
    A drying oven according to claim 1, wherein the hinged elements are hinged rod profiles.
    [4]
    A drying oven according to any of claims 1 to 3 comprising:
    - a displacement system (102) for displacing the plates from an entrance (103) of the drying oven to an outlet (104) of the drying oven in a flow direction (X);
    BE2018 / 0050, wherein the displacement system (102) comprises at least two a plurality of transverse profiles (107) to which at least two support profiles (108) are each attached for supporting one plate (101), which support profiles (108) are provided to the oven entrance (103) to take plates to be dried from a supply system (112);
    and wherein the feed system (112) defines at least one cavity (130) through which at least one of the support profiles (108) must partially move through to receive a plate (101) to be dried;
    characterized in that the drying oven further comprises a first detection system for verifying whether the at least one support profile (108) to be moved through the at least one cavity (130) can first move through at least one predefined passage in accordance with the at least one cavity (130) before entering the at least one cavity.
    [5]
    The drying oven according to any of claims 1 to 4, wherein the first detection system is provided to generate a first warning signal when it is detected that the at least one support profile (108) is proceeding outside the at least one defined passage.
    [6]
    The drying oven according to claim 5, further comprising a control unit for controlling the displacement system;
    and wherein the control unit is connected to the first detection system for receiving the first warning signal;
    and wherein the control unit is configured to prevent the displacement system from moving when the warning signal indicates that the at least one support profile (108) is proceeding outside the at least one predefined passage (W; 133).
    [7]
    A drying oven according to any of claims 1 to 6,
    BE2018 / 0050 wherein the at least one sensor or detector or switch is selected from the group consisting of: a detector for detecting electrical or mechanical contact, a proximity detector, a proximity switch, a vibration detector, an accellerometer.
    [8]
    A drying oven according to any one of the preceding claims, wherein the plates to be dried are calcium silicate hydrate (CSH) based plates, which are optionally xonotlite plates or tobermorite plates.
    [9]
    A method of advancing a displacement system (102) of a drying oven according to any one of the preceding claims, comprising the step of:
    - detecting by means of a first detection system, whether the at least one support profile (108) which has to move through the at least one cavity (130) can first move through the at least one predefined passage (W; 133);
    - generating a first warning signal when it is detected that the at least one support profile (108) is at least partially outside the at least one defined passage.
    [10]
    A method according to claim 9, further comprising the step of:
    - receiving by means of the at least two support profiles (108) a plate to be dried from the supply system (112) and transferring the plate (101) to the displacement system (102).
    [11]
    The method of any one of claims 9 to 10, performed on a drying oven with the features of claim 3, wherein the method further comprises the step of:
    - preventing the displacement system (102) from moving further when the first warning signal indicates that the at least one support profile (108) is partially outside the at least one predefined passage, before the support profile (108) enters the first cavity (130).
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    同族专利:
    公开号 | 公开日
    BE1025173A1|2018-11-21|
    BE1025173B1|2018-11-26|
    BE1025549A1|2019-04-03|
    BE1025549B1|2019-04-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3029927A|1958-12-05|1962-04-17|Black James|Apparatus for drying coated sheet stock|
    US3048257A|1960-02-23|1962-08-07|Schuster Janos|Conveyor clearing device|
    US3147971A|1962-04-02|1964-09-08|John W Key|Stripper|
    US3370690A|1965-10-21|1968-02-27|Moffitt Co Roy M|Sheet handler-stripper|
    法律状态:
    2019-05-16| FG| Patent granted|Effective date: 20190409 |
    优先权:
    申请号 | 申请日 | 专利标题
    BE2017/5291|2017-04-25|
    BE2017/5291A|BE1025173B1|2017-04-25|2017-04-25|DEVICE FOR DRYING CALCIUM SILICATE HYDRATE BASED PLATES|
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