• 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 present invention relates to a vacuum conveyor for conveying granulate and/or powdery material, the conveyor comprising: a main body having an upper end and a lower end; a cavity inside the main body, said cavity comprising an opening arranged at the lower end of the main body; a valve arranged at the opening positionble between an open position allowing a flow of granulate and/or powdery material out from the cavity through said opening and a sealing position sealing said opening; an inlet arranged at the upper end of the main body forming an inlet passage into the cavity; a venturi inside the main body at a position being distinct from the cavity, said venturi comprising an inlet and an outlet; and a suction channel fluidly connecting the throat of the venturi with the interior of the cavity at a position at or above the inlet.
    公开号:DK201870291A1
    申请号:DKP201870291
    申请日:2018-05-14
    公开日:2020-01-10
    发明作者:Niklas Conradt Daniel
    申请人:Fmk Innovation A/S；
    IPC主号:
    专利说明:

    A VACUUM CONVEYOR FOR CONVEYING GRANULATE AND/OR POWDERY MATERIAL
    FIELD OF THE INVENTION
    The present invention relates to a vacuum conveyor for conveying granulate and/or powdery material, the conveyor comprising: a main body having an upper end and a lower end; a cavity inside the main body, said cavity comprising an opening arranged at the lower end of the main body; a valve arranged at the opening positionable between an open position allowing a flow of granulate and/or powdery material out from the cavity through said opening and a sealing position sealing said opening; an inlet arranged at the upper end of the main body forming an inlet passage into the cavity; a venturi inside the main body at a position being distinct from the cavity, said venturi comprising an inlet and an outlet; and a suction channel fluidly connecting the throat of the venturi with the interior of the cavity at a position at or above the inlet.
    BACKGROUND OF THE INVENTION
    Conveying of granulate and/or powdery material in a production facility such as an injection moulding process with plastic materials, often makes use of conveyors conveying the material from containers to the site of use. Such conveyors are powered by electricity and often needs a vacuum system which has been found to be labour and money intensive during installation and requires attention to avoid hazardous situations during such conveyors lifetime. This is found to be disadvantageous and hence, an improved conveyor would be advantageous, and in particular a more efficient and/or reliable conveyor would be advantageous.
    OBJECT OF THE INVENTION
    It is an object of the present invention to provide an alternative to the prior art. In particular, it may be seen as an object of the present invention to provide a conveyor that solves the above mentioned problems of the prior art.
    SUMMARY OF THE INVENTION
    Thus, the above described object and several other objects are intended to be obtained in a first aspect of the invention by providing a vacuum conveyor for
    DK 2018 70291 A1 conveying granulate and/or powdery material, the conveyor preferably comprising:
    - a main body having an upper end and a lower end;
    - a cavity inside the main body , said cavity comprising an opening arranged at the lower end of the main body;
    - a valve arranged at the opening postionable between an open position allowing a flow of granulate and/or powdery material out from the cavity through said opening and a sealing position sealing said opening;
    - an inlet arranged at the upper end of the main body forming an inlet passage into the cavity;
    - a venturi inside the main body at a position being distinct from the cavity, said venturi comprising an inlet and an outlet;
    - a suction channel fluidly connecting the throat of the venturi with the interior of the cavity at a position at or above the inlet.
    In some embodiments, the valve is biased towards the sealing position by a counter balancing weight arranged so that gravity maintains it in its sealing position until the weight of the granulate and/or powdery material in the cavity exceed the counter balancing weight, thereby opening the valve.
    In some embodiments, the valve comprise a valve plate having a valve seat of a dimension being sufficient to cover the opening, said valve plate being rotatably hinged by a hingde to said main body, so that the valve plate (9) rotatably can be moved between the sealing position and the open position.
    In some embodiments, the conveyor is provided with a sensor for sensing whether the valve is in the open or sealing position, said sensor preferably comprising a magnetic sensor, such as a hall sensor, wherein said sensor is preferably arranged to sense the position of the valve through a wall of the main body.
    In some embodiments, the conveyer further comprising a weight sensor for sensing the amount of granulate material in the cavity, said sensor preferably comprising a weighing cell measuring the weight of granulate inside the cavity by sensing the force acting on the body.
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    In some embodiments, the conveyor further comprise a funnel shaped restrictor arranged inside said cavity and narrowing down in the direction towards the lower end with its smallest cross section below or at a lowest position of the inlet.
    In some embodiments, the conveyor further comprising an air filter arranged to filter out particulates before air is sucked into the suction channel.
    In some embodiments, the upper end of the main body is formed by a detachable lid, said lid and main body comprising a bayonet joint, and at least a part of the suction channel is provided in said lid.
    In some embodiments, said lid secures the air filter in a fixed position.
    In some embodiments, the main body is formed as an integral element with the venturi including the inlet and outlet, the inlet and the suction channel formed by shaping the main body.
    In some embodiments, the inlet of the venturi is provided with a snap-coupling, for connecting a hose feeding pressurized air into the venturi.
    In some embodiments, the venturi has no moving parts.
    In some embodiments, the conveyer further comprise a silencer arranged at the outlet of the venturi and configured to dampen noise generated by air flowing through the venturi.
    In some embodiments, the silencer is releasable arranged at the outlet through a bayonet joint.
    In some embodiments, the conveyer further comprising an external cavity configured for or containing a control unit.
    In some embodiments, the control unit is configured for controlling said electromechanically valve and said control unit being configured for exchanging control
    DK 2018 70291 A1 signal(s) and/or data through a connector, preferably being an RJ45 connector, which connector also applies power to the control unit.
    In some embodiments, the main body is provided with a snap-coupling, such as a part of a bayonet joint, for connecting the main body with a flange.
    In some embodiments, a connected main body and flange can be fixated in a connected arrangement by a locking mechanism.
    In some embodiments, the main body and/or the inlet and/or the venturi and/or the external cavity and/or the suction channel and/or silencer and/or restrictor and/or valve and/or the lid essentially consist of a plastic material, such as PLA.
    In some embodiments, the weight of the conveyer is less than 5 kg, such as less than 3 kg, such as less than 2 kg, such as less than 1,5 kg.
    In some embodiments, the capacity of the conveyer is at least 3 kg/hours, such as at least 4 kg/hour, such as at least 5 kg/hour.
    In some embodiments, the lift of the conveyer is at least two meters, such as at least 2.5 meters, such as at least 3 meters.
    In a second aspect, the present invention relates to a method for conveying a material from one point to another using a conveyer according to the present invetion, comprising the steps of:
    - providing a flow of compressed air through the venturi to provide a suction at the inlet, wherein granulate and/or powdery material can be conveyed through the inlet into the cavity, when the control unit receives a signal from said hall sensor indicating that the valve is in the sealed position
    - shutting of the flow of compressed air through the venturi when the control unit receives a signal from said weight sensor or a timer exceeds a predefined time period, the timer may be an internal timer of the conveyor, indicating that the amount of granulate and/or powdery material within the cavity is above a certain threshold,
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    - opening of the valve as a result of gravity, wherein granulate and/or powdery material flow out of the opening;
    - closing of the valve as a result of gravity when the cavity is emptied, due to the counter balancing weight arranged so that gravity bias the valve towards its sealed position.
    Accordingly, in some embodiments, the timer may control the time during which the compressed air is supplied; and the time period may be determined based on experiments.
    In some embodiments, the method of the present invention comprise 3D printing the main body and/or the inlet and/or the venturi and/or the suction channel and/or the external cavity and/or silencer and/or restrictor and/or valve and/or the lid.
    In some embodiments, the main body is 3D printed, with the venturi, including the inlet and outlet, the inlet and the suction channel formed by shaping the interior of the main body to provide the contours thereof. The 3D printer may be a hobby desktop 3D printer.
    In the present context terms are used in manner being ordinary to a skilled person. Some of these terms are elucidated below.
    Granulate and/or powdery material is typically used to mean elements of material having a size allowing it to enter into the cavity. Granulate and/or powdery material may be made of plastic but may also be made of other materials as well.
    Vacuum in vacuum conveyor refers to the suction provided by the venturi sucking into the cavity granulate and/or powdery material. Vacuum should not be interpreted as 0 bar, since vacuum is used to refer to a pressure difference providing suction.
    In another aspect, the invention relates to a method of controlling a conveyor, such as a conveyor according to the present invention.
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    The first, and second aspect, as well as the different embodiments of the present invention may each be combined with any of the other aspects or embodiments of the invention. These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.
    BRIEF DESCRIPTION OF THE FIGURES
    The present invention and in particular preferred embodiments thereof will now be described in more details with regard to the accompanying figures. The figures show ways of implementing the present invention and are not to be construed as being limiting to other possible embodiments falling within the scope of the attached claim set.
    Figure 1 is a schematic illustration of an embodiment of the present invention, wherein the illustration shows the invention from above (A) and in cross sectional view (B);
    Figure 2 is a schematic illustration of an embodiment of the present invention, wherein the illustration shows the invention in cross sectional view;
    Figure 3 is an illustration of an embodiment of the present invention, wherein the illustration shows the invention from above (A) and in three-dimensional cross sectional view (B);
    Figure 4 is a flow chart illustrating an embodiment of a control sequence for use of conveyor, preferably being a conveyor according to preferred embodiments of the invention;
    Figure 5 is an illustration of an embodiment of the present invention, wherein the illustration shows the invention in an exploded view;
    Figure 6 is an illustration of an embodiment of the present invention, where the illustration shows the invention in a three-dimensional view and shows the inside of an embodiment of the external cavity comprising a control unit;
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    Figure 7 is an illustration of an embodiment of the present invention, wherein the illustration shows the invention from a side view (A), a cross sectional view (B) and a zoom in on a detail of the invention (C);
    and
    Figure 8 is an illustration of an embodiment of the present invention, wherein the illustration shows the invention from a side view (A) and a zoom in on a detail within the cavity of the conveyer (B).
    DETAILED DESCRIPTION OF AN EMBODIMENT
    Reference is made to fig. 1 schematically illustrating an embodiment of a vacuum conveyor according to the present invention, for conveying granulate and/or powdery material. As illustrated, a conveyor of the present invention comprises a main body 3 having an upper end 13 and a lower end 14, where upper and lower refers to an orientation with gravity acting downward. This is the typical orientation of the conveyer, since the granulate and/or powdery material typically flow out from the conveyor by gravitational forces.
    The conveyor comprises a cavity 2 inside the main body 3, and said cavity is configured in shape and size to contain a certain amount of granulate and/or powdery material which is - as will be disclosed below - sucked into the cavity 2.
    The cavity 2 comprise an opening 5 arranged at the lower end of the main body 3. Discharge of material contained in the cavity 2 is controlled by a valve 6 arranged at the opening 5 positionable between an open position allowing a flow of granulate and/or powdery material out from the cavity 2 through said opening 5 and a sealing position sealing said opening 5.
    The valve 6 may comprise a valve plate 9 having a valve seat of a dimension being sufficient to cover the opening 5, said valve plate being rotatably hinged by a hinge to said main body, so that the valve plate (9) rotatably can be moved between the sealing position and the open position.
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    In the embodiment shown in fig. 1, the valve comprise a valve plate 9 rotatable arranged by a hinge 20, so that the valve 6 may be altered between its opening and sealing position (in fig. 1 the valve is in its sealing position) by rotating the valve plate 9 around its fulcrum point provided by the hinge 20.
    The valve plate 9 is a particular preferred embodiment of the invention, but other embodiments of the valve 6 are considered to be within the reach of the present invention.
    In some embodiments, the valve is biased towards the sealing position by a counter balancing weight arranged so that gravity maintains it in its sealing position until the weight of the granulate and/or powdery material in the cavity exceed the counter balancing weight, thereby opening the valve. Closing of the valve 6 may be accomplished by gravity combined with no or little weight on the valve plate 9 to pull the valve plate 9 into its open position. By little weight is meant less weight than the weight of the counter balancing weight.
    In some embodiments, the valve plate 9 is made from a non-magnetic material and a magnetic material, such as iron, is arranged on/in the plate 9.
    The conveyor also comprises an inlet 1 arranged at the upper end 13 of the main body 3 forming an inlet passage into the cavity 2. Granulate and/or powdery material enters into the cavity 2 through this inlet 1.
    The inlet may be fluidly connected to a flexible tube or pipe, so granulate and/or powdery material can be conveyed through the flexible tube or pipe and then through the inlet 1.
    The suction of granulate and/or powdery material is provided by a venturi 4 provided inside the main body 3 at a position being distinct from the cavity 2. By distinct from the cavity 2 is meant that the throat of the venturi 4 is fluidly connected, through a suction channel 7, with the interior of the cavity 2, at position at or above the inlet 1. Further, the venturi has an inlet 4a and an outlet 4b both of which is arranged outside the cavity 2. Thus, by providing a flow of e.g. compressed air through the venturi 4 in a direction from the inlet 4a to the outlet
    DK 2018 70291 A1
    4b, a suction is provided which is communicated to the inlet 1 whereby a suction is provided at the inlet 1. When the inlet 1 is connected to a source of granulate and/or powdery material, this material can be sucked into the cavity 2.
    Since granulate and/or powdery material is sucked into the cavity 2 by the venturi 4, there is a risk that the material is sucked into the venturi 4. To minimize or even prevent such a flow, the conveyor may comprise a funnel shaped restrictor 8 arranged inside said cavity 2 and narrowing down in the direction towards the lower end 14 with its smallest cross section below or at a lowest potion of the inlet
    1. This is illustrated in fig. 1 where the restrictor 8 is arranged so that granulate and/or powdery material is directed downwardly by the side of the restrictor 8 when entering into the cavity 2. Air is sucked through the lower opening of the restrictor 8, upwardly and into the suction channel 7.
    Even though the restrictor may at least potentially prevent granulate and/or powdery material to flow into the suction channel, some material may escape the restrictor 8 and flow upwardly towards the suction channel 7. To prevent flow of such material into the suction channel 7, the conveyor may be equipped with an air filter 17 arranged to filter out particulates before air is sucked into the suction channel 7. Such an air filter 17 may be arranged on top of the restrictor 8.
    A conveyor according to the present invention may advantageously be provided with a sensor for sensing whether the valve 6 is in the open or sealing position. This can be used in order to provide input to controller, such that once a suction is provided by the venturi, the valve 6 is closed whereby granulate and/or powdery material can be sucked into the cavity 2. Typically, such a sensor may comprise a magnetic sensor, such as a hall sensor 22 and the sensor is preferably arranged to sense the position of the valve 6 through a wall of the main body 3. This may be embodied by the e.g. the valve plate 9 comprising a material, such as iron, which can be sensed by the sensor arranged externally to the cavity 2 and preferably outside the main body 3.
    A conveyor according to preferred embodiments of the invention may also comprise a sensor for sensing amounts of granulate material in the cavity 2. This may be embodied as the sensor being a weighing cell measuring the weight of
    DK 2018 70291 A1 granulate inside the cavity, e.g. by sensing the force acting on the valve 6 or the valve plate 9.
    Reference is made to fig. 2 depicting a side-view of another embodiment of a conveyor according to the present invention. The features of the embodiment described in fig. 1 may also be present in the embodiment described in fig. 2. However, in fig. 2 is illustrated a conveyor where the main body 3 is formed as an integral element with the venturi 4, including the inlet and outlet 4a, 4b, the inlet 1 and the suction channel 7 formed by shaping the main body 3. Furthermore, the upper end 13 of the main body 3 is formed by a detachable lid 19 and a restrictor 8 formed integral with the lid 19. This may inter alia provide access to the interior of the conveyor and to the cavity 2. The lid 19 and main body 3 may comprise a bayonet joint so that the lid can be secured to the conveyor by the bayonet joint. Please observe, that in fig. 2 the valve plate 9 which sits in the hinge part 20 is not shown.
    Preferably, at least a part of the suction channel 7 is provided in said lid 19. The lid 19 when arranged on the conveyor may also to be used to secure the restrictor 8 in a fixed position, if the restrictor 8 is not formed integral with the main body
    3. In addition, said lid 19 may also secure the air filter 17 in a fixed position. In preferred embodiments, the venturi has no moving parts.
    Since air flowing through a venturi 4 has a tendency to generate noise, often loud noise, which in general may be considered undesired, preferred embodiments of a conveyor may further comprise a silencer 18 arranged at the outlet 4b of the venturi 4, as illustrated in fig. 2. The silencer 18 is configured to dampen noise generated by air flowing through the venturi 4. The silencer 18 shown in fig. 2 is a tubular element arranged at the outlet 4b. Inside the tubular element, noise absorbing material(s) and/or other elements, e.g. perforated tubes may be arranged. The silencer 18 may be releasable arranged at the outlet through a bayonet joint. In this way, the silencer may easily be arranged on the venturi 4.
    Reference is made to fig. 3, 5 and 6 depicting a preferred embodiment of a conveyor according to the present invention. Fig. 3A illustrated the embodiment from a top view, fig. 3B illustrates the same embodiment from a three
    DK 2018 70291 A1 dimensional cross sectional view, fig. 5 illustrates an exploded view of the embodiment, whereas fig. 6 illustrates a three-dimensional view of the embodiment. The features of the embodiment described in fig. 1 and 2 may also be present in the embodiment described in fig. 3, 5 and 6. However, the embodiment shown in fig. 3, 5 and 6 further comprise an external cavity 16, containing a control unit 15, a hose 26 connected to the inlet 4a of the venturi 4, for feeding pressurized air into the venturi 4 and a flange 21 to which the main body 3 may be connected.
    Many embodiments of the conveyor make use of electrical control unit 15, such as computer, e.g. to sense if the valve 6 is open or close and/or determining the amount of material in the cavity, and such a control unit 15 may be integrated into the conveyor. In some embodiments including a controller, the conveyor may further comprise an external cavity 16 configured for or containing the control unit 15. By external is preferably meant that access to the cavity 15 can be obtained from the outside of the conveyor, which in many preferred embodiments is embodied as the external cavity 16 being provided at the outside of the main body. Thereby, the control unit 15 is shielded from granulate and/or powdery material located inside the conveyor.
    Accordingly, a conveyor according to another preferred embodiments may further comprise a control unit 16 being configured for controlling the electromechanically valve. Typically, such a control unit 16 is configured for exchanging control signal(s) and/or data through a connector, preferably being an RJ45 connector, which connector also applies power to the control unit.
    The inlet of the venturi 4 may be provided with a snap-coupling, for connecting a hose feeding pressurized air into the venturi 4.
    Reference is made to fig. 4 being a flow chart illustrating an embodiment of a control sequence for use of conveyor according to preferred embodiments of the invention. The control sequence is typically carried out by the control unit disclosed herein, but may be embodied differently.
    DK 2018 70291 A1
    As illustrated, control sequence being with waiting from request for feeding of granulate and/or powdery material that is a request for feeding of material to the cavity.
    When a request is received, it is checked whether the valve 6 is closed. If yes, the venturi 4 is activated and the cavity 2 is filled with granulated and/or powdery material. Once the cavity 2 is filled, the valve 6 opens and the material in the cavity leaves the cavity by gravity. Thereafter, the control sequence revert to the step of waiting for request...
    If the valve 6 is not closed - that is open - and a request for feeding is received, no action is taken.
    Reference is made to fig. 7 depicting another embodiment of a conveyor according to the present invention. The features of the embodiment described in fig. 7 may also be present in the embodiment described in fig. 1-3 and 5-6.
    Fig. 7A illustrated the embodiment from a side view, fig. 7B illustrates the same embodiment from a cross sectional view and fig. 7C illustrates a detail of fig 7B.
    Fig. 7B illustrates an embodiment of the conveyer where the valve 6 is in the open position. A sensor, such as a hall sensor 22, is depicted on the figure, configured for detecting whether the valve is in the open or closed position. As illustrated in fig. 7B, a space for a magnet is provided in the valve 6.
    The detail in fig. 7C illustrates an enlarged view of Detail D in fig. 7B
    Reference is made to fig. 8 illustrating another embodiment of a conveyor according to the present invention. The features of the embodiment described in fig. 8 may also be present in the embodiment described in fig. 1-3 and 5-7. Fig. 8A illustrated the embodiment from a side view, as well as a detail within the cavity 2 of the conveyer and fig. 8B illustrates a detail of fig 8A.
    Fig. 8A further illustrates a locking mechanism 25 for fixating the main body 3 and flange 21 in a connected arrangement. When the main body 3 and flange 21 have
    DK 2018 70291 A1 been connected, for example by a bayonet joint, a lower section of a locking mechanism depicted in fig. 8 can be pushed down, fixating the main body 3 and flange 21. To release the main body 3 from the flange 21, the lower section of the locking mechanism 25 have to be manually pushed up before the main body 3 can be separated from the flange 21.
    Fig. 8B illustrates an enlarged view of Detail B of fig. 8A. As illustrated, the hinge comprising an oval shaped opening in which the pivot axel is arranged.
    Please observe that dimensions provided in the figures are not to be construed as limiting for the scope of the invention since the device according to the invention may be provided with dimensions being different from those given in the figures.
    Although the present invention has been described in connection with the specified embodiments, it should not be construed as being in any way limited to the presented examples. The scope of the present invention is set out by the accompanying claim set. In the context of the claims, the terms comprising or comprises do not exclude other possible elements or steps. Also, the mentioning of references such as a or an etc. should not be construed as excluding a plurality. The use of reference signs in the claims with respect to elements indicated in the figures shall also not be construed as limiting the scope of the invention. Furthermore, individual features mentioned in different claims, may possibly be advantageously combined, and the mentioning of these features in different claims does not exclude that a combination of features is not possible and advantageous.
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    LIST OF REFERENCE SYMBOLS USED
    Inlet for conveyed material
    Cavity
    Main body
    Venturi
    4a Inlet of venturi
    4b Outlet of venturi
    Opening
    Valve
    Suction channel
    Restrictor
    Valve plate
    Air flow
    Suction
    Upper end
    Lower end
    External cavity
    Control unit
    Air filter
    Silencer
    Lid
    Hingde
    Flange hall sensor magnet/space for magnet part of bayonet joint locking mechanism
    权利要求:
    Claims (25)
    [1] Claims
    1. A vacuum conveyor for conveying granulate and/or powdery material, the conveyor comprising:
    - a main body (3) having an upper end (13) and a lower end (14);
    - a cavity (2) inside the main body (3), said cavity comprising an opening (5) arranged at the lower end of the main body (3);
    - a valve (6) arranged at the opening (5) positionable between an open position allowing a flow of granulate and/or powdery material out from the cavity through said opening (5) and a sealing position sealing said opening (5);
    - an inlet (1) arranged at the upper end (13) of the main body (3) forming an inlet passage into the cavity (2);
    - a venturi (4) inside the main body at a position being distinct from the cavity (2), said venturi comprising an inlet (4a) and an outlet (4b);
    - a suction channel (7) fluidly connecting the throat of the venturi (4) with the interior of the cavity (2) at a position at or above the inlet (1).
    [2] 2. A conveyor according to any of the preceding claims, wherein the valve (6) is biased towards the sealing position by a counter balancing weight arranged so that gravity maintains it in its sealing position until the weight of the granulate and/or powdery material in the cavity exceed the counter balancing weight, thereby opening the valve (6).
    [3] 3. A conveyor according to any of the preceding claims, wherein the valve (6) comprise a valve plate (9) having a valve seat of a dimension being sufficient to cover the opening (5), said valve plate (9) being rotatably hinged by a hingde (20) to said main body (3), so that the valve plate (9) rotatably can be moved between the sealing position and the open position.
    [4] 4. A conveyor according to any of the preceding claims, wherein the conveyor is provided with a sensor for sensing whether the valve (6) is in the open or sealing position, said sensor preferably comprising a magnetic sensor, such as a hall sensor (22), wherein said sensor is preferably arranged to sense the position of the valve (6) through a wall of the main body (3).
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    [5] 5. A conveyor according to any of the preceding claims, wherein the conveyer further comprising a weight sensor for sensing the amount of granulate material in the cavity (2), said sensor preferably comprising a weighing cell measuring the weight of granulate inside the cavity, by sensing the force acting on the body (3).
    [6] 6. A conveyor according to any of the preceding claims, wherein the conveyor further comprise a funnel shaped restrictor (8) arranged inside said cavity (6) and narrowing down in the direction towards the lower end (14) with its smallest cross section below or at a lowest position of the inlet (1).
    [7] 7. A conveyor according to any of the preceding claims, wherein the conveyor further comprising an air filter (17) arranged to filter out particulates before air is sucked into the suction channel (7).
    [8] 8. A conveyor according to any of the preceding claims, wherein the upper end (13) of the main body (3) is formed by a detachable lid (19), said lid (19) and main body (3) comprising a bayonet joint, and at least a part of the suction channel (7) is provided in said lid (19).
    [9] 9. A conveyor according to claim 8, when dependant on claim 4, wherein said lid (19) secures the air filter (17) in a fixed position.
    [10] 10. A conveyor according to any of the preceding claims, wherein the main body (3) is formed as an integral element with the venturi (4) including the inlet and outlet (4a, 4b), the inlet (1) and the suction channel (7) formed by shaping the main body (3).
    [11] 11. A conveyor according to any of the preceding claims, wherein the inlet (4a) of the venturi (4) is provided with a snap-coupling, for connecting a hose feeding pressurized air into the venturi (4).
    [12] 12. A conveyor according to any of the preceding claims, wherein said venturi (4) has no moving parts.
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    [13] 13. A conveyor according to any of the preceding claims, further comprising a silencer (18) arranged at the outlet (4b) of the venturi (4) and configured to dampen noise generated by air flowing through the venturi (4).
    [14] 14. A conveyor according to claim 13 wherein the silencer (18) is releasable arranged at the outlet (4b) through a bayonet joint.
    [15] 15. A conveyor according to any of the preceding claims, wherein the conveyer further comprising an external cavity (15) configured for or containing a control unit (16).
    [16] 16. A conveyor according to any of the claim 3-13, wherein said control unit (16) is configured for controlling said electro-mechanically valve and said control unit (16) being configured for exchanging control signal(s) and/or data through a connector, preferably being an RJ45 connector, which connector also applies power to the control unit.
    [17] 17. A conveyer according to any of the preceding claims, wherein the main body (3) is provided with a snap-coupling, such as a part of a bayonet joint (24), for connecting the main body with a flange.
    [18] 18. A conveyer according to any of the preceding claims, wherein a connected main body (3) and flange can be fixated in a connected arrangement by a locking mechanism (25).
    [19] 19. A conveyor according to any of the preceding claims, wherein the main body (3) and/or the inlet (1) and/or the venturi (4) and/or the external cavity (15) and/or the suction channel (7) and/or silencer (18) and/or restrictor (8) and/or valve (6) and/or the lid (19) essentially consist of a plastic material, such as PLA.
    [20] 20. A conveyer according to any of the preceding claims, wherein the weight of the conveyer is less than 5 kg, such as less than 3 kg, such as less than 2 kg, such as less than 1,5 kg.
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    [21] 21. A conveyer according to any of the preceding claims, wherein the capacity of the conveyer is at least 3 kg/hours, such as at least 4 kg/hour, such as at least 5 kg/hour.
    [22] 22. A conveyer according to any of the preceding claims, wherein the lift of the conveyer is at least two meters, such as at least 2.5 meters, such as at least 3 meters.
    [23] 23. A method for conveying a material from one point to another using a conveyer according to any of claims 1-22, comprising the steps of:
    - providing a flow of compressed air through the venturi (4) to provide a suction at the inlet (1), wherein granulate and/or powdery material can be conveyed through the inlet (1) into the cavity (2), when the control unit (15) receives a signal from said hall sensor (22) indicating that the valve (6) is in the sealed position
    - shutting of the flow of compressed air through the venturi (4) when the control unit (15) receives a signal from said weight sensor or a timer exceeds a predefined time period, the timer may be an internal timer, indicating that the amount of granulate and/or powdery material within the cavity is above a certain threshold,
    - opening of the valve (6) as a result of gravity, wherein granulate and/or powdery material flow out of the opening (5);
    - closing of the valve (6) as a result of gravity when the cavity (2) is emptied, due to the counter balancing weight arranged so that the valve is biased (6) towards its sealed position.
    [24] 24. A method for manufacturing a conveyer according to any of claims 1-22, the method comprising 3D printing the main body (3) and/or the inlet (1) and/or the venturi (4) and/or the suction channel (7) and/or the external cavity (15) and/or silencer (18) and/or restrictor (8) and/or valve and/or the lid (19).
    [25] 25. A method for manufacturing a conveyer according to claim 24, wherein the main body (3) is 3D printed, with the venturi (4), including the inlet and outlet (4a, 4b), the inlet (1) and the suction channel (7) formed by shaping the interior of the main body (3) to provide the contours thereof.
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    同族专利:
    公开号 | 公开日
    CN112368224A|2021-02-12|
    DK180029B1|2020-01-28|
    WO2019219141A1|2019-11-21|
    EP3793922A1|2021-03-24|
    US20210070558A1|2021-03-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US168029A|1875-09-21|Improvement in grain-elevators |
    DE1756646C3|1968-06-21|1973-10-25|Bruno Meyer, Spezialmaschinen Und Wiegeapparatebau Kg, 5201 Geisbach|Automatic weighing device|
    WO1996015057A1|1994-11-10|1996-05-23|Nordson Corporation|Feed system for particulate material and transition hopper therefor|
    CN102275740A|2011-05-13|2011-12-14|黄演洪|Material suction machine and working method thereof|
    CN203372827U|2013-07-01|2014-01-01|东莞新能源科技有限公司|Automatic powder material feed system|
    WO2016130874A1|2015-02-12|2016-08-18|Ipeg, Inc.|Automated vacuum actuated control|
    CN206409444U|2016-08-30|2017-08-15|唐山康成科技有限公司|Vacuum generator|
    法律状态:
    2020-01-10| PAT| Application published|Effective date: 20191115 |
    2020-01-28| PME| Patent granted|Effective date: 20200128 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201870291A|DK180029B1|2018-05-14|2018-05-14|A vacuum conveyor for conveying granulate and/or powdery material|DKPA201870291A| DK180029B1|2018-05-14|2018-05-14|A vacuum conveyor for conveying granulate and/or powdery material|
    US17/053,319| US20210070558A1|2018-05-14|2019-05-14|A vacuum conveyor for conveying granulate and/or powdery material|
    CN201980039916.9A| CN112368224A|2018-05-14|2019-05-14|Vacuum conveyor for conveying granular and/or powdery material|
    PCT/DK2019/050151| WO2019219141A1|2018-05-14|2019-05-14|A vacuum conveyor for conveying granulate and/or powdery material|
    EP19726305.6A| EP3793922A1|2018-05-14|2019-05-14|A vacuum conveyor for conveying granulate and/or powdery material|
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