• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for refurbishing a screw conveyor, comprising a worm (2) which is rotatable in a worm bearing (3, 4) and which is arranged in a worm trough (5) which in particular contains a concrete or steel bed. It is characterized in that in the screw trough (5), an additional tubular trough (13) is used and that the tubular trough is mounted on one of the screw bearing (3, 4) independent Troglagerung (16). The invention also relates to a correspondingly renovated screw conveyor.
    公开号:CH709212B1
    申请号:CH00064/15
    申请日:2015-01-19
    公开日:2019-02-15
    发明作者:Kantert Peter
    申请人:Juergen Kuhn Und Michael Kuhn Grundstuecksverwaltungs Und Verpachtungs Gbr；
    IPC主号:
    专利说明:

    Description: The present invention relates to a method for refurbishing a screw conveyor, with a screw that is rotatable in a screw bearing and that is arranged in a screw trough that has a screw bed, in particular made of concrete. The invention also relates to a refurbished screw conveyor with a screw which is rotatable in a screw bearing and which is arranged in a screw trough which contains a screw bed, in particular made of concrete. Screw conveyors with which the invention is concerned exist in different designs. A screw conveyor can be designed, for example, as a screw pump, in particular as a water screw. Such a screw pump is used in particular to transport a liquid, in particular water, from a first height level to a second, higher height level. Water screw conveyors are used, for example, in wastewater treatment plants, water courses and wastewater pumping stations. A worm pump has a drive or output unit with a motor that drives the worm and sets it in rotation. A screw conveyor can also be designed as a hydropower screw. The water (or possibly also another liquid) is conveyed from a first level to a second, lower level. The energy released in this way rotates the screw and can be converted into electrical energy using a generator which is connected to the screw.
    The wear regularly shows up on the screw trough, among other things. In view of the high costs of a complete replacement of the screw conveyor, there is an interest in refurbishing screw conveyors and their screw troughs. For example, the screw trough is regularly made of concrete, and it can also be made of steel. However, the renovation can be complex.
    It is known from practice to remove a worn screw trough during renovation and to replace it with a new screw trough made of concrete or steel. This results in high costs for the removal of the old snail trough, in addition to the costs for the new trough. In this context, it should be taken into account that the effort for concrete mortising work, e.g. when removing a worn concrete trough is difficult to calculate. This makes it difficult for a provider to be able to correctly estimate the costs in advance. In addition, the screw bearing must also be modified in known refurbishment processes, which also results in a considerable outlay.
    [0004] EP 0 587 961 A1 discloses a manure clearing device with a screw conveyor. According to a described embodiment, the screw conveyor can be arranged in a conveyor pipe. One end of the screw conveyor is arranged in an insertion shaft surrounded by concrete walls.
    [0005] DE 10 2010 006 841 A1 describes a screw conveyor with a trough profile and a heat exchanger device.
    The invention has for its object to provide a method for renovating a screw conveyor that can be carried out safely and inexpensively. The invention also has the task of specifying a screw conveyor that can be manufactured inexpensively and safely by refurbishing an existing screw conveyor.
    The object of the invention is achieved in a method by the features of claim 1. Accordingly, in the above-mentioned method for renovating a screw conveyor, provision is made for an additional tubular trough to be inserted into the screw trough and for the tubular trough to be supported by a trough bearing which is independent of the screw mounting. This makes it possible to avoid complex work on the worn-out screw trough to be renovated. This can remain in place and it is not necessary to remove it. After the renovation, the added trough, which is tubular, takes over the function of the screw trough. The tubular design of the trough not only contributes to its stability. In particular, it also makes it possible to dispense with a complex modification of the screw bearing. For this purpose, the tubular trough, which is preferably made of steel, is provided with a trough bearing which is independent of the screw bearing. The tubular trough encloses the snail; it can be provided with openings. One advantage is that the screw bearing can be retained during the renovation without modifications. This avoids, in particular, concrete work, which is complex and expensive. The screw conveyor can advantageously be designed as a water screw or as a water screw. Under certain circumstances, the screw of the screw conveyor to be renovated can be preserved during the renovation. In this case, the diameter of the screw has to be adapted to the tubular trough. But it is also possible to replace the snail. The invention relates in particular to screw conveyors with an existing open, in particular U-shaped screw trough. It can be used in particular in a screw trough with a concrete screw bed.
    In a screw conveyor, the object of the invention is achieved with the features of claim 11. Accordingly, it is provided in the screw conveyor mentioned at the outset to provide an additional tubular trough added during the refurbishment, which is arranged in the screw trough, the tubular trough being mounted via a trough bearing which is independent of the screw bearing. The tubular trough can be refurbished as described to produce a refurbished screw conveyor.
    CH 709 212 B1 Advantageous embodiments of the invention are described below. The respective features relate both to the process for renovating a screw conveyor and to the screw conveyor.
    A particularly advantageous embodiment of the invention provides that the trough bearing has at least one holder which introduces the weight of the tubular trough into a support device, the support device being separated from the screw bearing. In this way, the tubular trough can be separated and stored independently of the screw storage. In addition to the fact that both are arranged on a stable base, there is preferably no statically relevant connection between the trough bearing and the screw bearing. Extensive changes to the screw bearing are not necessary for the renovation. In addition to the weight, the trough storage can also absorb the weight of the transported liquid acting on the trough.
    It is advantageous if the support device comprises the screw trough or parts thereof. In this way, the tubular trough can be stored particularly easily, regardless of the screw storage.
    According to a preferred embodiment it is provided that the at least one holder is arranged above the tubular trough. This design contributes to an easy implementation of the renovation. In particular, the tubular trough can be attached to the holder in a hanging manner. The holder can preferably be designed as a carrier.
    A further improvement is achieved if the support device comprises a side part, in particular a side wall, of the screw trough. This design can be used in a particularly simple and inexpensive way for a renovation. The support device preferably comprises two side parts, in particular two side walls, of the screw trough. This can advantageously involve already existing side walls of the screw trough to be renovated. The side parts or side walls can be arranged opposite one another on the sides of the screw trough. In particular, the side parts can be arranged parallel to the longitudinal axis of the screw trough. On the other hand, it is also possible for the support device to comprise another part of the screw trough, in particular its bottom part, or to be provided separately from the screw trough.
    It is also advantageous if the holder extends from a first of the side parts to a second of the side parts and / or has a connecting section with which the holder is connected to the tubular trough.
    The holder may include a mounting bracket which is attached to the side part. A mounting bracket is preferably provided on each of two side parts (in particular side walls), the holder comprising a crossmember which is fixed to the mounting brackets.
    It is also advantageous if the support device comprises at least a portion of the screw bed, the holder being preferably arranged on the screw bed. With this design, too, the tubular trough can be stored particularly easily, regardless of the screw mounting.
    A preferred embodiment of the invention provides that the tubular trough is self-supporting. It is particularly preferred if the tubular trough is designed as a compact tubular trough.
    It is further preferred if the tubular trough is arranged cantilevered. It can in particular be provided that the tubular trough is kept at a distance from the existing screw trough by the trough mounting. This helps to simplify the implementation of the renovation and keep the effort low.
    It is further preferred if the trough storage of the additional tubular trough is produced during the renovation.
    The renovation is also simplified in that the screw bearing is not modified during the renovation.
    An advantageous embodiment of the invention provides that the screw bearing has an upper bearing at one end of the screw and a lower bearing at the opposite end of the screw.
    The worm can be connected to a drive or output unit. The drive unit can have a motor that drives the screw. The output unit can have a generator which is driven by the worm.
    [0023] The screw bed can have an area that is partially circular in cross section and is preferably made of concrete or steel.
    [0024] The worm can have a worm shaft on which a worm thread is provided.
    The invention also relates to a screw conveyor that has been refurbished according to the method described.
    [0026] Further objectives, features, advantages and possible uses of the present invention result from the following description of exemplary embodiments with reference to the drawing. It shows:
    1 shows a longitudinal section through a screw conveyor according to the invention;
    FIG. 2 shows a cross section through the screw conveyor from FIG. 1 perpendicular to the longitudinal axis of the screw;
    CH 709 212 B1
    3 shows a plan view of the tubular trough of a screw conveyor;
    4 shows a perspective illustration of a further embodiment of a tubular trough;
    5: a cross section through a further screw conveyor perpendicular to the longitudinal axis of the screw.
    1 and 2 show a refurbished screw conveyor 1. The screw conveyor is designed in the illustrated embodiment as a screw pump in the form of a water screw.
    [0028] The screw conveyor 1 has a screw 2. This is rotatably mounted by means of a screw bearing, which comprises an upper screw bearing 3 and a lower screw bearing 4. The worm 2 has a worm shaft 26 and a spiral worm thread 27 arranged thereon. For reasons of clarity and to better illustrate the other components, the screw 2 is not shown in FIG. 2.
    The screw 2 is arranged in a screw trough 5. In the exemplary embodiment shown, the screw trough 5 has a screw bed 6 which forms an inner surface 7 which is of part-circular design. The inner surface 7 was - before the renovation is carried out - adapted to the screw 2 and worked together with it.
    The screw trough 5 is U-shaped and has two side parts 8, 8 '. The side parts 8, 8 'are designed as side walls. The side parts 8, 8 'are connected to a bottom part 25, which connects the side parts 8, 8'. The side parts 8, 8 'extend from the bottom part 25 essentially vertically upwards. The side parts 8, 8 'also extend parallel to the longitudinal axis L of the screw 2. The screw trough 5 is open. The partially circular inner surface 7 partially surrounds the screw 2. In the exemplary embodiment shown, the screw trough 5 encloses approximately 50% of the circumferential surface of the screw 2. The screw trough 5 has the screw bed 6, which is adapted to the shape of the screw 2. The screw bed 6 is formed by concrete.
    The upper and lower screw bearings 3, 4 are each attached to a base 9, 9 '. The upper and lower screw bearings 3, 4 are designed as rotary bearings.
    The screw 2 is connected to an input or output unit 10. In the illustrated embodiment, this has a motor that drives the screw 2. For this purpose, power transmission means are provided which connect the motor to the worm 2. In the exemplary embodiment shown, the force transmission means comprise a transmission 11 with a clutch 11a and a belt drive 12.
    Originally, ie before the renovation, the screw 2 runs in the screw trough 5 with the screw bed 6. In the original state, the tubular trough 13, which is described in more detail below, is not yet present. As long as the wear remains low, the screw conveyor 1 can be operated without problems. However, if wear occurs over time, the efficiency of the screw 2 decreases and then requires replacement or refurbishment of the screw conveyor. The wear also regularly affects the screw trough 5 with the screw bed 6. The friction, frost and thaw changes, chemical influences, hydrolysis and / or algae growth can gradually damage the surface of the screw bed 6. This increases the gap between the screw 2 and the screw bed 6. This is responsible for the drop in efficiency.
    [0034] Refurbishing the concrete of the screw bed 6 is complex and cost-intensive. In particular, it is difficult to estimate the effort involved, which is usually associated with concrete mortising work. The invention provides that an additional tubular trough 13 is used in the renovation in the existing screw trough 5 to be renovated. The tubular trough 13 can have a slightly smaller diameter than the screw trough 5 in order to be used without problems. If the existing screw is to be used further during the renovation, it can be revised so that it works with the somewhat smaller tubular trough 13. The screw 2 can also be replaced during the renovation; this is often the more economical solution.
    The tubular trough 13 is made of steel, has a cylindrical shape in the illustrated embodiment and represents a closed trough. In addition, it is designed to be self-supporting; it forms a tubular compact trough. It therefore does not have to be supported on its underside by supports. Rather, it can be arranged in the screw trough 5 such that it does not rest on it. In this way, the tubular trough 13, as can be seen in particular in FIG. 2, can also be self-supporting. It can be clearly seen here that an intermediate space 14 is formed between the tubular trough 13 and the screw trough 5. In the exemplary embodiment shown, the tubular trough 13 does not rest on the screw trough 5. In the context of the invention, however, it is also possible to place the tubular trough on the screw trough 5.
    The tubular trough 13 is located between the (old) screw trough 5 and the screw 2. The tubular trough 13 has no contact with the upper and lower screw bearings 3, 4 and / or the input or output components. A trough bearing 15 is provided for fastening the tubular trough 13. The trough bearing 15 is, as shown, independent of the screw bearing with the upper and lower screw bearings 3, 4. Accordingly, the forces absorbed by the trough bearing 15 are in particular not introduced into the bases 9, 9 ', which are assigned to the upper and lower screw bearings 3, 4.
    CH 709 212 B1 The trough bearing 15 has holders 16 which introduce the weight of the tubular trough 13 into a support device 17. In the illustrated embodiment, the holder 16 are arranged above the tubular trough 13. The support device 17 is formed by the screw trough 5. In the exemplary embodiment shown, the two side parts 8, 8 ′ of the screw trough 5, which are designed as side walls, form the support device 17.
    1 shows that the trough bearing 15 shown as an example comprises three holders 16. The holders 16 extend cantilevered from one side part 8 to the other side part 8 '. The holders 16 each comprise two fastening brackets 18. Each fastening bracket is fastened to the inside of the side parts 8 and 8 '. The attachment can take place, for example, with suitable attachment means, such as in particular screws. The holder 16 also have a cross member 19 which is attached at its ends to the mounting brackets 18. The holders 16 also have a connecting section 20 with which they are connected to the tubular trough 13. The connecting section 20 can be connected to the tubular trough, for example by welding or screwing.
    Fig. 1 shows clearly that during the renovation, the screw bearing with the upper and lower screw bearings 3, 4 does not have to be modified. This saves considerable effort, since a modification of the screw bearings 3, 4 usually makes it necessary to carry out complex work, in particular concrete work, on the bases 9, 9 '. Even if the screw bearing is not modified, components of the upper or lower screw bearing 3, 4 can optionally be replaced during the renovation. In addition, since the screw bearings 3, 4 do not have to be modified, the drive or driven unit 10 can also be used without any problems during the renovation. Fig. 1 also shows that the screw conveyor 1 is provided with an inlet channel 21 and an outlet channel 22 for the water. In the illustrated embodiment of a screw pump, the inlet channel 21 is at a lower level and the drain channel 22 is at a higher level. The reverse is true for a hydropower screw.
    Fig. 3 shows again an example of the design of a tubular trough 13 with the holders 16. For better illustration, the entire length of the tubular trough 13 is not shown. The arrangement of the holders 16 and the fastening brackets 18 is also clearly visible in this illustration.
    Fig. 4 shows a further embodiment of a tubular trough 13 according to the invention. The tubular trough shown is provided with openings 23 which are arranged on the top and ventilate the tubular trough 13. Furthermore, the holder 16 with the fastening brackets 18 can also be clearly seen in this figure.
    5 shows a modified embodiment of the invention. A cross section through the screw conveyor is shown perpendicular to the longitudinal axis of the screw. Here, as in FIG. 2, the screw 2 is not shown for reasons of clarity. The screw conveyor shown here largely corresponds to the screw conveyor described above (cf. in particular FIGS. 1 and 2 and their description). Reference is made to the relevant description. In the embodiment shown in FIG. 5, the trough storage 15 is configured differently than in the embodiments shown in FIGS. 1 to 4. The trough bearing 15 has holders 16 'which introduce the weight of the tubular trough 13 into a support device 17'. In the illustrated embodiment, the support device 17 'is formed by the screw trough 5, in particular its screw bed 6. As shown, the holders 16 'are arranged laterally on opposite sides of the tubular trough 13. The holders 16 'are connected to the tubular trough 13 in order to absorb the weight of the tubular trough 13 and to introduce them into the screw trough 5, in particular its screw bed 6. In the embodiment shown in FIG. 5, the tubular trough 13 is self-supporting and forms a tubular compact trough. As shown, it can be arranged via the holder 16 ′ in such a way that the tubular trough itself does not rest on the screw trough 5 or the screw bed 6. Accordingly, an intermediate space 14 is also formed in FIG. 5 between the tubular trough 13 and the screw bed 6.
    权利要求:
    Claims (12)
    [1]
    claims
    1. A method for renovating a screw conveyor (1), with a screw (2) which is rotatable in a screw bearing (3, 4) and which is arranged in a screw trough (5) which has a screw bed (6) characterized in that an additional tubular trough (13) is inserted into the screw trough (5) and that the tubular trough (13) is supported by a trough mounting (15) which is independent of the screw mounting (3, 4).
    [2]
    2. The method according to claim 1, characterized in that the trough mounting (15) has at least one holder (16, 16 ') which introduces the weight of the tubular trough (13) into a support device (17), the support device (17) is separated from the screw bearing (3, 4).
    [3]
    3. The method according to claim 2, characterized in that the support device (17) comprises the screw trough (5) or parts thereof.
    [4]
    4. The method according to claim 3, characterized in that the holder (16) is arranged above the tubular trough (13).
    [5]
    5. The method according to claim 3 or 4, characterized in that the support device (17) comprises a side part (8, 8 ') of the screw trough (5).
    CH 709 212 B1
    [6]
    6. The method according to claim 5, characterized in that the holder (16) extends from a first of the side parts (8) to a second of the side parts (8 ') and has a connecting section (20) with which the holder (16) is connected to the tubular trough (13).
    [7]
    7. The method according to claim 3 or 4, characterized in that the support device (17) comprises at least a portion of the screw bed (6), the holder (16 ') being arranged on the screw bed (6).
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that the tubular trough (13) is arranged cantilevered.
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that the tubular trough (13) is held by the trough bearing (15) with an intermediate space (14) to the existing screw trough (5).
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that the trough storage (15) of the tubular trough (13) is produced during the renovation.
    [11]
    11. Refurbished screw conveyor with a screw (2) which is rotatable in a screw bearing (3, 4) and which is arranged in a screw trough (5) which has a screw bed (6), characterized by an additional one added during the renovation tubular trough (13) which is arranged in the screw trough (5), the tubular trough (13) being mounted via a trough bearing (15) which is independent of the screw mounting (3, 4).
    [12]
    12. Refurbished screw conveyor according to claim 11, characterized in that the screw bed (6) has a partially circular cross-sectional area.
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    同族专利:
    公开号 | 公开日
    AT515380B1|2021-10-15|
    AT515380A3|2020-06-15|
    AT515380A2|2015-08-15|
    CH709212A2|2015-08-14|
    DE102014101678B4|2017-03-30|
    DE102014101678A1|2015-08-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE59206063D1|1992-09-17|1996-05-23|Arthur Krebs|Manure clearing device with a screw conveyor|
    US5761888A|1996-09-19|1998-06-09|Carbonic Industries Corporation|Method and apparatus for conveying dry ice|
    DE29718002U1|1997-10-10|1998-02-19|Schmitz Peter|Lining shell|
    CN201224618Y|2008-06-20|2009-04-22|奔腾（国际）汽车科技有限公司|Dismountable inner lining spiral conveyer trough|
    DE102010006841A1|2010-02-03|2011-08-04|Jürgen Kuhn und Michael Kuhn Grundstücksverwaltungs- und verpachtungs GbR , 74746|Screw conveyor device or hydroelectric device useful for treating waste water comprises a drivable central axis of rotation, a screw conveyor profile , a drive unit or a generator unit, a trough profile and a heat exchanger|
    GB201005140D0|2010-03-26|2010-05-12|Spaans Babcock Ltd|An archimedean screw apparatus|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014101678.5A|DE102014101678B4|2014-02-11|2014-02-11|Process for the rehabilitation of a screw conveyor and screw conveyor|
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