Screening device

Abstract

The utility model relates to a kind of screening devices, belong to waste recovery field.Screening device includes cylinder, multiple sieve plates and drive mechanism.Cylinder is provided with inlet at top end;Multiple sieve plates are spaced apart in the axial direction of cylinder and set in cylinder, to separate into multiple holding cavities in cylinder, sieve plate is provided with sieve hole, the aperture of sieve hole of sieve plate in adjacent two sieve plates close to inlet is greater than the aperture of sieve hole of sieve plate away from inlet;The circumferential side of cylinder is provided with the collection port corresponding to holding cavity, along the direction close to collection port, the distance between sieve plate and inlet gradually increases;Drive mechanism is drivingly connected with multiple sieve plates, and for driving sieve plate reciprocating motion along gravity direction.

Description

Technical Field

[0001] This utility model belongs to the field of waste recycling, and specifically relates to a screening device. Background Technology

[0002] Various waste materials (such as glass and metal) are generated in people's production and daily life. Taking glass waste as an example, there are strict restrictions on the particle size of glass shards in the reprocessing of glass waste. Therefore, it is necessary to screen the particle size of glass waste. Current technology generally uses filter screens to screen the particle size of glass waste. However, some glass waste sometimes gets stuck in the screen holes that are smaller than its particle size. This can lead to the risk of glass waste completely blocking the screen holes after long-term use, requiring manual cleaning by workers. Utility Model Content

[0003] In view of the above problems, this application provides a screening device that can reduce the risk of glass waste clogging the screen holes of a filter screen. The screening device includes a cylinder, multiple screen plates, and a drive mechanism. An inlet is provided at the top of the cylinder; multiple screen plates are spaced apart along the axial direction of the cylinder to divide the cylinder into multiple receiving cavities. Each screen plate has screen holes, with the screen hole diameter of the screen plate closer to the inlet being larger than that of the screen plate farther from the inlet. Collection ports corresponding to the receiving cavities are provided on the periphery of the cylinder, and the distance between the screen plate and the inlet gradually increases along the direction closer to the collection port. The drive mechanism is connected to the multiple screen plates and is used to drive the screen plates to reciprocate along the direction of gravity.

[0004] Specifically, waste particles smaller than the screen aperture can enter the lower receiving cavity, while waste particles larger than the screen aperture can remain on the screen. Since the distance between the screen and the inlet gradually increases towards the collection port, the waste particles remaining on the screen can move towards the collection port for collection. Furthermore, because the aperture of the screen closer to the inlet is larger than that of the screen further away from the inlet, the screening device can sequentially screen waste particles of different sizes. Simultaneously, because the drive mechanism drives the screen to reciprocate along the direction of gravity, when waste particles become stuck in screen apertures smaller than their size, the vibration of the screen itself along the direction of gravity can dislodge the waste particles, thus reducing the risk of waste particles clogging the screen apertures.

[0005] In some embodiments, the screening device further includes a frame, with a cylinder disposed on top of the frame, the frame serving to support the cylinder.

[0006] In the above technical solution, by setting up a frame to provide installation space for the cylinder and other structural components (such as the drive mechanism), the risk of corrosion of the cylinder and other structural components caused by directly setting them on the ground is reduced.

[0007] In some embodiments, the drive mechanism includes a drive shaft, a spline shaft assembly, a spline sleeve, and a drive assembly. The drive shaft is sequentially connected to multiple screen plates; one end of the spline shaft assembly is connected to the end of the drive shaft located outside the cylinder; the spline sleeve is sleeved outside the spline shaft assembly and rotatably mounted on the frame; the drive assembly is used to drive the spline sleeve to rotate the spline shaft assembly and to drive the spline shaft assembly to reciprocate along the direction of gravity.

[0008] In the above technical solution, by setting a spline shaft assembly and a spline sleeve, the transmission shaft can rotate in its own circumference while moving along the direction of gravity, thereby driving the screening plate to rotate, and thus driving the waste to move towards the collection port through centrifugal force.

[0009] In some embodiments, the outer periphery of the spline sleeve has teeth. The drive assembly includes a drive motor and a gear. The drive motor is mounted on the frame; the gear is located at the output end of the drive motor and meshes with the teeth.

[0010] In the above technical solution, a drive motor and gears are used to drive the outer periphery to rotate from the toothed spline sleeve, thereby driving the spline shaft assembly to move. The structure is simple and easy to implement.

[0011] In some embodiments, the drive assembly further includes an abutment platform disposed on the frame and located below the spline shaft assembly. The abutment platform has a first guide surface and a second guide surface on its end face facing the spline shaft assembly. Along the rotation direction of the spline shaft assembly, the distance between the first guide surface and the end face of the abutment platform away from the spline shaft assembly gradually increases, and the distance between the second guide surface and the end face of the abutment platform away from the spline shaft assembly gradually decreases. The spline shaft assembly rotates such that the end of the spline shaft assembly away from the drive shaft switches between abutting the first guide surface and abutting the second guide surface.

[0012] Specifically, during the process of the drive assembly driving the spline shaft assembly to rotate, thereby driving the transmission shaft and screen plate to rotate, the end of the spline shaft assembly away from the transmission shaft switches between contacting the first guide surface and the second guide surface, so that the spline shaft assembly drives the transmission shaft to move along the direction of gravity, thus eliminating the need to set up an additional drive motor or drive cylinder, reducing the production cost of the screening device.

[0013] In some embodiments, the spline shaft assembly includes a body, a turntable, and an abutment portion. One end of the body is connected to a drive shaft; the turntable is disposed at the other end of the body; the abutment portion is disposed on the side of the turntable opposite to the body and abuts against a first guide surface or a second guide surface, and is offset from the body.

[0014] In the above technical solution, the abutment part set off the main body axis abuts against the first guide surface or the second guide surface to drive the main body to move along the direction of gravity. The structure is simple and easy to implement.

[0015] In some embodiments, the abutment part is a swivel ball.

[0016] In the above technical solution, by setting the abutment part as a universal ball, the sliding friction between the abutment part and the first guide surface and the second guide surface is transformed into rotational friction, thereby improving the service life of the abutment part.

[0017] In some embodiments, the collection ports are multiple sets spaced apart along the axial direction of the cylinder, each set of collection ports is corresponding to a receiving cavity, and each set of collection ports is multiple sets spaced apart along the circumference of the cylinder; along the radial direction of the cylinder away from the cylinder axis, the distance between the screen plate and the feed port gradually increases.

[0018] In the above technical solution, by setting multiple collection ports at intervals along the circumference of the cylinder, the risk of waste products remaining in the containment cavity is reduced, thereby improving the screening efficiency of the screening device.

[0019] In some embodiments, the screening device further includes a collection trough arranged around the cylinder and located below the collection port.

[0020] In the above technical solution, a collection trough is set up to collect waste discharged from multiple collection ports corresponding to the same receiving cavity, thereby improving collection efficiency. In some embodiments, the outer peripheral wall of the collection tank is provided with a discharge port, and the distance between the bottom wall of the collection tank and the inlet gradually increases along the direction close to the discharge port.

[0021] In the above technical solution, the distance between the bottom wall of the collection tank and the inlet gradually increases along the direction closer to the outlet, so that the waste in the collection tank can move towards the outlet under the action of gravity, thus making it easier to be collected. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the screening device provided in an embodiment of the present utility model; Figure 2A schematic diagram of the screening device provided in an embodiment of the present utility model from another direction; Figure 3 for Figure 2 Sectional view of AA; Figure 4 A schematic diagram of the sieve plate, drive shaft, and splined shaft assembly provided in an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the abutment platform provided in an embodiment of the present utility model. Detailed Implementation

[0024] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0025] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Reference Figures 1-5This application provides a screening device including a cylinder 10, multiple screen plates 20, and a drive mechanism 30. The top of the cylinder 10 is provided with an inlet 10A; multiple screen plates 20 are spaced apart within the cylinder 10 along its axial direction to divide the cylinder 10 into multiple receiving cavities 10B. Each screen plate 20 has a screen hole 20A, and the diameter of the screen hole 20A of the screen plate 20 closer to the inlet 10A is larger than that of the screen plate 20 farther from the inlet 10A. A collection port 10C corresponding to each receiving cavity 10B is provided on the periphery of the cylinder 10, and the distance between the screen plate 20 and the inlet 10A gradually increases along the direction closer to the collection port 10C. The drive mechanism 30 is connected to the multiple screen plates 20 and is used to drive the screen plates 20 to reciprocate along the direction of gravity.

[0029] Specifically, waste particles smaller than the aperture of the sieve holes 20A on the sieve plate 20 can enter the lower receiving cavity 10B, while waste particles larger than the aperture of the sieve holes 20A on the sieve plate 20 can remain on the sieve plate 20. Since the distance between the sieve plate 20 and the feed inlet 10A gradually increases along the direction approaching the collection port 10C, the waste particles remaining on the sieve plate 20 can move along the sieve plate 20 towards the collection port 10C for collection. Furthermore, since the aperture of the sieve holes 20A on the sieve plate 20 closer to the feed inlet 10A is larger than that on the sieve plate 20 farther from the feed inlet 10A, the screening device can sequentially screen waste particles of different sizes. Meanwhile, since the drive mechanism 30 is used to drive the screen plate 20 to reciprocate along the direction of gravity, when a portion of the waste is stuck in the screen hole 20A which is smaller than its particle size, the waste can be dislodged from the screen hole 20A by the vibration of the screen plate 20 itself along the direction of gravity, thereby reducing the risk of the waste blocking the screen hole 20A of the screen plate 20.

[0030] According to some embodiments of this application, the screening device further includes a frame 40, with a cylinder 10 disposed on top of the frame 40, and the frame 40 is used to support the cylinder 10.

[0031] In this technical solution, by setting up the frame 40 to provide installation space for the cylinder 10 and other structural components (such as the drive mechanism 30), the risk of corrosion of the cylinder 10 and other structural components caused by directly setting them on the ground is reduced.

[0032] According to some embodiments of this application, the drive mechanism 30 includes a drive shaft 31, a splined shaft assembly 32, a splined sleeve 33, and a drive assembly 34. The drive shaft 31 is sequentially connected to a plurality of screen plates 20; one end of the splined shaft assembly 32 is connected to the end of the drive shaft 31 located outside the cylinder 10; the splined sleeve 33 is sleeved outside the splined shaft assembly 32 and rotatably mounted on the frame 40; the drive assembly 34 is used to drive the splined sleeve 33 to rotate the splined shaft assembly 32 and to drive the splined shaft assembly 32 to reciprocate along the direction of gravity.

[0033] In this technical solution, by setting the spline shaft assembly 32 and the spline sleeve 33, the transmission shaft 31 can rotate in its own circumference while moving in the direction of gravity, thereby driving the screening plate to rotate, and thus driving the waste to move towards the collection port 10C by centrifugal force.

[0034] According to some embodiments of this application, the outer periphery of the spline sleeve 33 has teeth. The drive assembly 34 includes a drive motor 341 and a gear 342. The drive motor 341 is disposed on the frame 40; the gear 342 is disposed at the output end of the drive motor 341 and meshes with the teeth.

[0035] Specifically, the drive motor 341 rotates to drive the gear 342 to rotate, which in turn drives the spline sleeve 33 to rotate, which in turn drives the spline shaft assembly 32 to drive the transmission shaft 31 to rotate, thereby driving the screening plate to rotate.

[0036] In this technical solution, a drive motor 341 and a gear 342 are used to drive the outer periphery to rotate from the toothed spline sleeve 33, thereby driving the spline shaft assembly 32 to move. The structure is simple and easy to implement.

[0037] According to some embodiments of this application, the drive assembly 34 further includes an abutment platform 343, which is disposed on the frame 40 and located below the spline shaft assembly 32. The abutment platform 343 has a first guide surface 343A and a second guide surface 343B on its end face facing the spline shaft assembly 32. Along the rotation direction of the spline shaft assembly 32, the distance between the first guide surface 343A and the end face of the abutment platform 343 away from the spline shaft assembly 32 gradually increases, and the distance between the second guide surface 343B and the end face of the abutment platform 343 away from the spline shaft assembly 32 gradually decreases. The spline shaft assembly 32 rotates so that the end of the spline shaft assembly 32 away from the drive shaft 31 switches between abutting with the first guide surface 343A and abutting with the second guide surface 343B.

[0038] Specifically, when the end of the splined shaft assembly 32 away from the drive shaft 31 abuts against the first guide surface 343A and rotates along the first guide surface 343A, the splined shaft assembly 32 drives the drive shaft 31 and the screen plate 20 to move away from the ground. After the end of the splined shaft assembly 32 away from the drive shaft 31 disengages from the first guide surface 343A, gravity causes the end of the splined shaft assembly 32 away from the drive shaft 31 to abut against the second end. Understandably, the rise angle of the first guide surface 343A should be much smaller than the rise angle of the second guide surface 343B, so that a vibration can occur when the end of the splined shaft assembly 32 away from the drive shaft 31 switches from abutting against the first guide surface 343A to abutting against the second guide surface 343B, thereby facilitating the removal of waste products from the screen holes 20A.

[0039] In this technical solution, during the process of the drive assembly 34 driving the spline shaft assembly 32 to rotate, thereby driving the transmission shaft 31 and the screen plate 20 to rotate, the end of the spline shaft assembly 32 away from the transmission shaft 31 switches between contacting the first guide surface 343A and the second guide surface 343B, so that the spline shaft assembly 32 drives the transmission shaft 31 to move along the direction of gravity, thereby eliminating the need to set up an additional drive motor 341 or drive cylinder, reducing the production cost of the screening device.

[0040] According to some embodiments of this application, the spline shaft assembly 32 includes a body 321, a turntable 322, and an abutment portion 323. One end of the body 321 is connected to the drive shaft 31; the turntable 322 is disposed at the other end of the body 321; the abutment portion 323 is disposed on the side of the turntable 322 opposite to the body 321, and abuts against a first guide surface 343A or a second guide surface 343B, and is offset from the body 321.

[0041] In this technical solution, the abutment part 323, which is off-axis to the main body 321, abuts against the first guide surface 343A or the second guide surface 343B, thereby driving the main body 321 to move along the direction of gravity. The structure is simple and easy to implement.

[0042] According to some embodiments of this application, the abutment portion 323 is a omnidirectional ball.

[0043] In this technical solution, by setting the abutment part 323 as a universal ball, the sliding friction between the abutment part 323 and the first guide surface 343A and the second guide surface 343B is transformed into rotational friction, thereby improving the service life of the abutment part 323.

[0044] According to some embodiments of this application, the collection port 10C is a plurality of groups spaced apart along the axial direction of the cylinder 10, each group of collection ports 10C is correspondingly arranged with a receiving cavity 10B, and each group of collection ports 10C is a plurality of groups spaced apart along the circumference of the cylinder 10; along the radial direction of the cylinder 10 away from the axis of the cylinder 10, the distance between the screen plate 20 and the feed port 10A gradually increases.

[0045] In this technical solution, by setting multiple collection ports 10C at circumferential intervals along the cylinder 10, the risk of waste products remaining in the receiving cavity 10B is reduced, thereby improving the screening efficiency of the screening device.

[0046] According to some embodiments of this application, the screening device further includes a collection trough 11, which is disposed around the cylinder 10 and located below the collection port 10C.

[0047] In this technical solution, a collection trough 11 is provided to facilitate the collection of waste discharged from multiple collection ports 10C corresponding to the same receiving cavity 10B, thereby improving collection efficiency. According to some embodiments of this application, the outer peripheral wall of the collection tank 11 is provided with a discharge port 11A, and the distance between the bottom wall of the collection tank 11 and the inlet port 10A gradually increases along the direction close to the discharge port 11A.

[0048] In this technical solution, along the direction close to the discharge port 11A, the distance between the bottom wall of the collection tank 11 and the inlet 10A gradually increases, thereby enabling the waste in the collection tank 11 to move towards the discharge port 11A under the action of gravity, thus facilitating collection.

[0049] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0050] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A screening device, characterized in that, include: The cylinder has a feed inlet at the top. Multiple sieve plates are spaced apart in the cylinder along the axial direction of the cylinder to divide the cylinder into multiple receiving cavities. Each sieve plate is provided with sieve holes. The diameter of the sieve hole of the sieve plate closer to the feed inlet in two adjacent sieve plates is larger than the diameter of the sieve hole of the sieve plate farther from the feed inlet. The cylinder is provided with a collection port corresponding to the receiving cavity on its periphery, and the distance between the sieve plate and the feed port gradually increases along the direction close to the collection port; A drive mechanism is connected to the multiple screen plates and is used to drive the screen plates to reciprocate along the direction of gravity.

2. The screening device according to claim 1, characterized in that, The screening device also includes a frame, with the cylinder disposed on top of the frame, and the frame is used to support the cylinder.

3. A screening device according to claim 2, characterized in that, The drive mechanism includes: A drive shaft is connected in sequence to multiple sieve plates; The splined shaft assembly is connected at one end to the end of the drive shaft located outside the cylinder. A spline sleeve is fitted over the spline shaft assembly and rotatably mounted on the frame; A drive assembly is used to drive the spline sleeve to rotate the spline shaft assembly and to drive the spline shaft assembly to reciprocate along the direction of gravity.

4. A screening device according to claim 3, characterized in that, The outer periphery of the spline sleeve has teeth; The driving component includes: A drive motor is mounted on the frame; A gear is located at the output end of the drive motor and meshes with the teeth.

5. A screening device according to claim 4, characterized in that, The driving component also includes: An abutment platform is disposed on the frame and located below the spline shaft assembly. The abutment platform has a first guide surface and a second guide surface on its end face facing the spline shaft assembly. Along the rotation direction of the spline shaft assembly, the distance between the first guide surface and the end face of the abutment platform away from the spline shaft assembly gradually increases, and the distance between the second guide surface and the end face of the abutment platform away from the spline shaft assembly gradually decreases. The spline shaft assembly rotates so that the end of the spline shaft assembly away from the drive shaft switches between abutting the first guide surface and abutting the second guide surface.

6. A screening device according to claim 5, characterized in that, The spline shaft assembly includes: The main body is connected at one end to the drive shaft; A turntable is located at the other end of the main body; The abutting part is disposed on the side of the turntable away from the main body and abuts against the first guide surface or the second guide surface, and is off-axis disposed with respect to the main body.

7. A screening device according to claim 6, characterized in that, The contact part is a swivel joint.

8. A screening device according to claim 3, characterized in that, The collection ports are arranged in multiple groups at intervals along the axial direction of the cylinder, and each group of collection ports is arranged corresponding to one of the receiving cavities. Each group of collection ports is arranged in multiple groups at intervals along the circumference of the cylinder. Along the radial direction of the cylinder away from the cylinder axis, the distance between the sieve plate and the feed inlet gradually increases.

9. A screening device according to claim 8, characterized in that, The screening device also includes a collection trough, which is arranged around the cylinder and located below the collection port.

10. A screening device according to claim 9, characterized in that, The outer peripheral wall of the collection tank is provided with a discharge port, and the distance between the bottom wall of the collection tank and the inlet gradually increases along the direction close to the discharge port.

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