Screen beating device and sifter

Abstract

The utility model relates to grain screening equipment technical field provides a screen mesh and beat device and screening device, screen mesh and beat device, including main shaft, screening subassembly and beat subassembly, screening subassembly is located in main shaft, and main shaft rotates to drive screening subassembly rotates, and screening subassembly is used for screening out half clean grain, beat subassembly includes support, beat drive part and beat piece, and support is set up adjacent to screening subassembly, and beat drive part is connected with support, and beat piece is located in the output of beat drive part, and beat drive part is suitable for driving beat piece activity to beat screening subassembly. Through beat subassembly automatic beat screening subassembly to remove residual half clean grain, effectively prevent screen mesh from being blocked, avoided the tedious operation of manual cleaning, reduced the production interruption risk, improved screening efficiency and automation level.

Description

Technical Field

[0001] This utility model relates to the technical field of grain screening equipment, and in particular to a screen-pulling device and a screener. Background Technology

[0002] In grain processing, screens are a core screening component used to separate impurities from clean grains. However, in practical applications, semi-clean grains or fine impurities easily remain on the screen surface. These residues are difficult to completely remove using conventional vibration or tilting methods due to adhesion or the screen's pore structure. This residue problem not only leads to screen clogging, reducing screening efficiency and accuracy, but can also cause cross-contamination of materials, affecting the quality of subsequent batches of grain. Traditional cleaning methods rely on manual tapping or machine shutdown, which are cumbersome and time-consuming, increasing the risk of production interruption and maintenance costs. Furthermore, they cannot achieve continuous operation, hindering the improvement of automation levels in grain screening equipment. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in related technologies. To this end, this invention proposes a screen-pulling device, designed to avoid the tedious manual cleaning process, reduce the risk of production interruption, and improve screening efficiency and automation.

[0004] This utility model also proposes a filter.

[0005] The screen-pulling device according to a first aspect of the present invention includes: spindle; A screening component is provided on the main shaft, and the main shaft rotates to drive the screening component to rotate. The screening component is used to screen out semi-clean grains. A striking assembly includes a support, a striking drive, and a striking element. The support is disposed adjacent to the screening assembly, the striking drive is connected to the support, and the striking element is disposed at the output end of the striking drive. The striking drive is adapted to drive the striking element to move so as to strike the screening assembly.

[0006] According to the embodiment of the present invention, the screen-pulling device automatically pulls the screening component to remove residual semi-clean grain, effectively preventing screen blockage, avoiding the tedious operation of manual cleaning, reducing the risk of production interruption, and improving screening efficiency and automation level.

[0007] According to one embodiment of the present invention, the tactile assembly further includes a lifting structure, the tactile drive member is connected to the bracket through the lifting structure, and the lifting structure is adapted to drive the tactile drive member to move up and down along the bracket.

[0008] According to one embodiment of the present invention, the lifting structure includes: A lifting drive component, wherein the lifting drive component is disposed on the bracket; A screw, the screw being connected to the output end of the lifting drive component, the lifting drive component being adapted to drive the screw to rotate; A support member is provided on the screw and is adapted to move up and down along the screw. The chuck drive member is provided on the support member.

[0009] According to one embodiment of the present invention, the bracket is provided with a guide rail, the guide rail is arranged parallel to the screw, and the support member is slidably connected to the guide rail.

[0010] According to one embodiment of the present invention, the whipping component is a soft rubber belt.

[0011] According to one embodiment of the present invention, the screen beating device includes a plurality of screening components and a plurality of beating components, the plurality of screening components are arranged circumferentially along the main axis, and each beating component is arranged corresponding to a screening component.

[0012] According to one embodiment of the present invention, the screening component is provided with a weighing sensor.

[0013] According to one embodiment of the present invention, the screening component includes a first screen plate, a second screen plate, and a base plate stacked together. The screen pulling device further includes a separation drive member, which is adapted to be connected to the first screen plate, the second screen plate, and the base plate respectively, so as to drive the first screen plate, the second screen plate, and the base plate to move away from each other. The pulling member is adapted to pull the first screen plate, the second screen plate, and the base plate.

[0014] According to one embodiment of the present invention, the first screen plate, the second screen plate, and the chassis are all connected to the main shaft via a flipping drive, and the flipping drive is adapted to drive the first screen plate, the second screen plate, and the chassis to flip up and down.

[0015] According to a second aspect of the present invention, the screener includes a body and the above-described screen-beating device, wherein the screen-beating device is disposed on the body.

[0016] The filter according to the present invention includes the above-mentioned screen-beating device, and therefore has all the technical effects of the above-mentioned screen-beating device, which will not be repeated here.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies 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.

[0019] Figure 1 This is a schematic diagram of the structure of the screen-pulling device provided in this embodiment of the utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the whipping component provided in this embodiment of the utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the filter provided in this embodiment of the utility model.

[0022] Figure label: 2. Main shaft; 3. Screening assembly; 31. First screen plate; 32. Second screen plate; 33. Chassis; 5. Separation drive component; 6. Tilting drive component; 7. Pulling assembly; 71. Bracket; 711. Guide rail; 72. Pulling drive component; 73. Pulling component; 74. Lifting structure; 741. Lifting drive component; 742. Screw; 743. Support component. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model 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 the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0026] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] In traditional screening operations, after impurities or clean grains are sieved out, residual material tends to adhere to the screen surface, making it difficult to completely empty the material. This problem stems from the adhesion between the screen surface and the material, as well as the dynamic characteristics of the screening process. This prevents the residue from being removed automatically through conventional screening, causing partial blockage of the screen pores and affecting the continuity and accuracy of the screening operation. Furthermore, the material residue on the screen surface not only increases the difficulty of subsequent cleaning but also leads to reduced screening efficiency and decreased equipment operational stability.

[0029] Please refer to the reference. Figure 1 and Figure 2This application proposes a screen beating device, including a main shaft 2, a screening component 3 and a beating component 7. The screening component 3 is disposed on the main shaft 2, and the rotation of the main shaft 2 drives the screening component 3 to rotate. The screening component 3 is used to screen out semi-clean grain. The beating component 7 includes a support 71, a beating drive 72 and a beating component 73. The support 71 is disposed adjacent to the screening component 3. The beating drive 72 is connected to the support 71. The beating component 73 is disposed at the output end of the beating drive 72. The beating drive 72 is adapted to drive the beating component 73 to move so as to beat the screening component 3.

[0030] During screening, residual material easily adheres to the screen surface, making it difficult to empty. The screening component 3 can be understood as the screening structure performing semi-clean grain screening. It can be implemented using a mesh screen or a perforated plate screen, such as woven wire mesh or perforated steel plate, primarily for material separation. Specifically, the screening component 3 is mounted on the main shaft 2. The rotation of the main shaft 2 drives the screening component 3 to move continuously, preventing material accumulation caused by static screening. Further, the agitator 73 can be understood as a component that applies impact force to the screening component 3. It can be implemented using a hard metal rod, an elastic rubber strip, or a composite material strip with adjustable hardness, such as a stainless steel rod or silicone strip, primarily for removing residual material. The agitator drive 72 is connected to the bracket 71, which is located adjacent to the screening component 3. The agitator drive 72 is adapted to drive the agitator 73 to move and agitate the screening component 3. Therefore, this application achieves real-time removal of residual material on the screen surface by rotating the main shaft 2 to drive the screening component 3, combined with the dynamic striking action of the striking component 73 driven by the striking drive component 72, thus effectively addressing the problem of material being difficult to pour out after screening. As a preferred embodiment, the movement trajectory of the striking component 73 can be designed as a reciprocating linear motion or an oscillating motion to adapt to the removal needs under different screening conditions.

[0031] For example, the rotational design of the main shaft 2 causes the screening component 3 to move continuously, avoiding material accumulation caused by static screening. The screening component 3 is set on the main shaft 2 and completes the semi-clean grain screening operation as the main shaft 2 rotates. However, residual material easily adheres to the screen surface, affecting screening efficiency and cleanliness. Further, the whipping component 7 includes a support 71, a whipping drive 72, and a whipping component 73. The support 71 is set adjacent to the screening component 3, providing a precise positioning basis for the whipping action. The whipping drive 72 is connected to the support 71 to ensure the stability of the drive source. The whipping component 73 is set at the output end of the whipping drive 72 and moves according to the instructions of the whipping drive 72 to whip the screening component 3. As a preferred embodiment, the whipping drive 72 can be specifically a pneumatic cylinder, and the whipping component 73 can be specifically a strip structure made of elastic rubber material. Therefore, when the agitator 72 drives the agitator 73 to move, it applies a controllable agitation force to the screening component 3, dynamically shaking off residual material from the screen surface. This avoids the tedious operation of manual intervention and prevents damage to the screen due to excessive force. Specifically, this technical solution, through the synergistic effect of the rotation of the main shaft 2 and the agitator 7, removes residual material in real time during the screening process, ensuring that the screen remains unobstructed. This effectively solves the technical problem of the difficulty in emptying the residual portion after the screen has screened out impurities or clean grain.

[0032] Specifically, in some embodiments of this application, the pumping component 7 is used to pump the screening component 3 to remove residues on the screen. However, in its implementation, since the pumping drive component 72 is directly connected to the bracket 71 and its position is fixed, it is impossible to dynamically adjust the pumping height according to the surface condition of the screen or the distribution of residues. This results in insufficient pumping in some areas, making it difficult to remove residues, or excessive pumping, causing damage to the screen and affecting screening efficiency and cleanliness.

[0033] In this regard, this application further proposes that the tactile assembly 7 also includes a lifting structure 74, and the tactile drive 72 is connected to the bracket 71 through the lifting structure 74. The lifting structure 74 is adapted to drive the tactile drive 72 to move up and down along the bracket 71.

[0034] Specifically, the lifting structure 74 refers to the mechanical mechanism used to adjust the height of the pulsating drive component 72. It can be implemented using a hydraulic lifting device, a pneumatic lifting mechanism, or an electric push rod. Its purpose is to provide flexibility in height adjustment to adapt to changes in the screen surface. The connection between the pulsating drive component 72 and the support 71 via the lifting structure 74 can be understood as an indirect coupling between the pulsating drive component 72 and the support 71 through a transition component. This can be achieved using a sliding fit or a hinge. Its purpose is to maintain the support stability of the support 71 while allowing the vertical movement of the pulsating drive component 72. In practical applications, the lifting structure 74 is suitable for driving the pulsating drive component 72 to move up and down along the support 71. Specifically, the lifting structure 74 can control the vertical displacement of the pulsating drive component 72 on the support 71. This can be achieved through automatic adjustment based on sensor feedback or manual operation. Its purpose is to enable the pulsating component 73 to move precisely to the optimal pulsating height.

[0035] Specifically, the solution of this application indirectly connects the agitator 72 to the support 71 via a lifting structure 74, allowing the agitator 72 to move vertically along the support 71. When the screen surface is uneven due to grain accumulation, the lifting structure 74 drives the agitator 72 to descend, bringing the agitator 73 closer to the screen to enhance the agitation force; when the screen is unloaded, the lifting structure 74 drives the agitator 72 to rise, reducing wear on the screen. This dynamic height adjustment ensures uniform and effective agitation, avoiding insufficient or excessive agitation caused by a fixed height, thereby improving the residue removal effect and protecting the screen.

[0036] This application further proposes a lifting structure 74 including a lifting drive 741, a screw 742, and a support 743. The lifting drive 741 is mounted on the bracket 71. The screw 742 is connected to the output end of the lifting drive 741, and the lifting drive 741 is adapted to drive the screw 742 to rotate. The support 743 is mounted on the screw 742 and is adapted to move up and down along the screw 742. The pull drive 72 is mounted on the support 743.

[0037] In practical applications, the lifting drive component 741 refers to a device that provides controllable lifting power. It can be implemented using a stepper motor, servo motor, or pneumatic actuator. Its purpose is to serve as the core power source to output stable rotary motion and avoid motion deviation caused by external interference. The screw 742 refers to a rod-shaped structure with continuous threads. It can be implemented using a ball screw, trapezoidal threaded rod, or ordinary screw 742. Its purpose is to accurately convert rotary motion into linear displacement and to ensure the accuracy of height adjustment by utilizing the self-locking characteristic of the thread. Specifically, the support component 743 refers to a component used to support the lifting drive component 72 and realize linear motion. It can be implemented using a nut seat, slider, or sleeve with internal threads. Its purpose is to achieve smooth lifting through thread engagement and eliminate the shaking or jamming that may occur in traditional sliding structures.

[0038] This application further proposes that the bracket 71 is provided with a guide rail 711, the guide rail 711 is arranged parallel to the screw 742, and the support member 743 is slidably connected to the guide rail 711.

[0039] The guide rail 711 is a rigid structure used to guide the movement of a moving part along a predetermined path. Its purpose is to provide a stable guide path to constrain the movement trajectory. The parallel arrangement of the guide rail 711 and the screw 742 can be understood as the extension direction of the guide rail 711 being consistent with the axial direction of the screw 742. Its purpose is to ensure that the movement direction of the support 743 strictly matches the lifting axis of the screw 742, avoiding movement jamming due to directional deviation. The sliding connection between the support 743 and the guide rail 711 means that the support 743 establishes a connection relationship with the guide rail 711 through a sliding fit. This can be achieved by using a slider, a sliding sleeve, or a linear bearing, etc. Its purpose is to restrict the rotational freedom of the support 743, so that it can only move linearly along the guide rail 711, thereby ensuring positional consistency.

[0040] As a preferred embodiment, the solution of this application is specifically implemented as follows: the guide rail 711 can be a linear guide rail 711, the support member 743 can be provided with a slider that slides with the guide rail 711, the slider integrates a ball structure to reduce frictional resistance, and the surface of the guide rail 711 is hardened to enhance wear resistance.

[0041] This application further proposes that the aforementioned ejector 73 is a soft rubber belt.

[0042] Among them, soft rubber belts refer to a belt-like structure made of flexible elastic materials, such as natural rubber, silicone, or polyurethane. Their purpose is to provide cushioning to reduce impact damage to the screen and avoid mechanical damage caused by hard materials.

[0043] Specifically, the solution of this application uses a soft rubber belt that moves under the drive of the whipping drive 72. The belt's flexibility and elasticity buffer the impact force, disperse local pressure, and prevent the screen from breaking. At the same time, the surface properties of the soft rubber belt allow it to better conform to the curved surface of the screen, enhance the vibration transmission effect, and ensure that the residue is fully removed without damaging the screen structure.

[0044] This application further proposes a screen beating device including multiple screening components 3 and multiple beating components 7, wherein the multiple screening components 3 are arranged at intervals along the circumferential direction of the main shaft 2, and each beating component 7 is arranged corresponding to a screening component 3.

[0045] In practical applications, multiple screening components 3 refer to the configuration of at least two screening units in the device. These units can be screens with the same or different screen aperture specifications. The purpose is to improve the overall material throughput capacity through parallel processing and avoid screen clogging caused by single-point overload. The circumferential spacing setting can be understood as the screening components 3 being distributed at a predetermined angle along the circumference of the main shaft 2. The purpose is to utilize the centrifugal force field characteristics generated by the rotation of the main shaft 2 to make the material evenly dispersed and flowed during the screening process, reducing local accumulation. Specifically, the corresponding setting means that each pumping component 7 is dedicated to the cleaning operation of one screening component 3. The purpose is to ensure that the pumping action can be accurately matched according to the real-time working status of the screening component 3 and to promptly remove residues from the surface of a specific screen.

[0046] In one specific implementation, the screen beating device is equipped with four screening components 3, which are evenly arranged at equal angular intervals along the circumference of the main shaft 2. Each screening component 3 is equipped with an independent beating component 7. The beating component 73 is made of soft rubber belt, and the support 71 adopts a rigid metal frame structure. When the main shaft 2 rotates, each screening component 3 performs semi-clean grain screening operation simultaneously. The beating drive component 72 periodically drives the soft rubber belt to beat the screen surface of the corresponding screening component 3 to remove residual materials.

[0047] Through the above solution, this application effectively solves the problem of screen residue accumulation under high load conditions, ensures the continuous stability of the screening process, avoids the phenomenon of decreased screening efficiency due to overload of a single component, and improves the screening quality and processing capacity of semi-clean grain.

[0048] In this regard, this application further proposes that the screening component 3 is equipped with a weighing sensor.

[0049] Specifically, a weighing sensor is a sensing device used to detect weight changes. It can be implemented using strain gauge, piezoelectric, or capacitive sensors. Its purpose is to monitor the weight status of the screening component 3 in real time, thereby providing quantitative feedback for the scooping operation. This sensor is directly integrated into the support structure of the screening component 3, enabling it to accurately capture material weight fluctuations and avoid measurement deviations caused by external interference. Its introduction ensures reliable identification of the degree of residue accumulation during the screening process. By weighing the impurities and semi-clean grain on the screen, the yield of the raw grain can be calculated.

[0050] As a specific embodiment, the solution of this application is implemented as follows: the weighing sensor can be a strain gauge sensor, which is installed at the frame connection part of the screening component 3 for continuous monitoring of material weight changes.

[0051] This application further proposes that the screening component 3 includes a first screen plate 31, a second screen plate 32 and a base plate 33 stacked together, and the screen pulling device also includes a separation drive 5, which is adapted to be connected to the first screen plate 31, the second screen plate 32 and the base plate 33 respectively, so as to drive the first screen plate 31, the second screen plate 32 and the base plate 33 to move away from each other, and the pulling component 73 is adapted to pull the first screen plate 31, the second screen plate 32 and the base plate 33.

[0052] The first sieve disc 31 is a sieve structure used for preliminary screening, which can be made of metal wire mesh or synthetic fiber mesh, and is intended to separate larger impurities such as roots and leaves. The second sieve disc 32 is a sieve structure used for fine screening, and is intended to further screen semi-clean grains. The base 33 is a bottom structure used to receive the undersize material, and is intended to collect dust and impurities. The separation drive 5 is a drive device that can generate linear motion, which can be made of cylinder, hydraulic cylinder or electric push rod, and is intended to drive the first sieve disc 31, the second sieve disc 32 and the base 33 away from each other. The striking component 73 is a component that can perform striking action, which can be made of soft rubber belt or elastic rubber strip, and is intended to remove residues from the sieve surface.

[0053] Specifically, the solution of this application achieves efficient screening by maintaining the first screen plate 31, the second screen plate 32 and the chassis 33 in a compact stacked state during the screening stage. When cleaning is required, the separation drive 5 is activated and drives the three components to move away from each other along the circumference of the main shaft 2, forming a gap space. After the first screen plate 31, the second screen plate 32 or the chassis 33 are flipped, the pull-out component 73 moves and pulls the outer or inner surface of each component under the drive of the pull-out drive 72, so that the residue is removed from the screen under the pull-out action, thereby avoiding the problem of cleaning dead corners caused by the internal obstruction of the screen in the overall structure, and simplifying the path of residue falling off.

[0054] This application further proposes that the first screen plate 31, the second screen plate 32 and the chassis 33 are all connected to the main shaft 2 through the flipping drive 6, and the flipping drive 6 is suitable for driving the first screen plate 31, the second screen plate 32 and the chassis 33 to flip up and down.

[0055] Among them, the flipping drive 6 refers to the actuator that can provide controllable rotation or swinging power. It can be achieved by using a servo motor, pneumatic swing cylinder or hydraulic swing motor. Its purpose is to provide precise flipping power for the screen plate assembly. Up and down flipping refers to the reciprocating motion of the screen plate assembly around the connecting axis with changing angles. It can achieve controllable swinging within the range of 0 to 180 degrees. Its purpose is to use gravity to cause the screened material on the screen surface to detach naturally.

[0056] Specifically, the solution of this application uses the separation drive 5 to drive the first screen plate 31, the second screen plate 32 and the base plate 33 to move away from each other to form an operating gap. Then, the flip drive 6 can drive each screen plate assembly to perform up and down flipping actions, so that the screen changes from an upward state to a downward tilting state during the flipping process. Impurities or semi-clean grains slide down the screen surface under the action of gravity, thereby realizing the automatic removal of the screened material and avoiding manual intervention.

[0057] like Figure 3 As shown, in another embodiment, this application also discloses a screener, including a body and the above-mentioned screen-beating device, the screen-beating device being disposed in the body.

[0058] The core innovation of this application lies in integrating the screen beating device into the machine body. The machine body serves as the basic frame of the screener, providing a stable installation platform, which allows the screen beating device to be precisely fixed, thus maintaining stability during the beating process and avoiding positional displacement due to vibration. The screen beating device includes a main shaft 2, a screening component 3, and a beating component 7. The beating component 7 drives the beating element 73 to move and beat the screening component 3, so that the beating action is precisely applied to the screen, timely removing residues and effectively solving the problem that it is difficult to pour out the residue after the screen has screened out impurities or cleaned grains.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A screen-pulling device, characterized in that, include: spindle; A screening component is provided on the main shaft, and the main shaft rotates to drive the screening component to rotate. The screening component is used to screen out semi-clean grains. A striking assembly includes a support, a striking drive, and a striking element. The support is disposed adjacent to the screening assembly, the striking drive is connected to the support, and the striking element is disposed at the output end of the striking drive. The striking drive is adapted to drive the striking element to move so as to strike the screening assembly.

2. The screen-pulling device according to claim 1, characterized in that, The tumbling assembly also includes a lifting structure, and the tumbling drive is connected to the bracket through the lifting structure. The lifting structure is adapted to drive the tumbling drive to move up and down along the bracket.

3. The screen-pulling device according to claim 2, characterized in that, The lifting structure includes: A lifting drive component, wherein the lifting drive component is disposed on the bracket; A screw, the screw being connected to the output end of the lifting drive component, the lifting drive component being adapted to drive the screw to rotate; A support member is provided on the screw and is adapted to move up and down along the screw. The chuck drive member is provided on the support member.

4. The screen-pulling device according to claim 3, characterized in that, The bracket is provided with a guide rail, which is arranged parallel to the screw, and the support member is slidably connected to the guide rail.

5. The screen-pulling device according to claim 1, characterized in that, The striking component is a soft rubber belt.

6. The screen-pulling device according to claim 1, characterized in that, The screen-beating device includes a plurality of screening components and a plurality of beating components. The plurality of screening components are arranged circumferentially along the main axis, and each beating component is arranged corresponding to one of the screening components.

7. The screen-pulling device according to claim 1, characterized in that, The screening component is equipped with a weighing sensor.

8. The screen-pulling device according to any one of claims 1 to 7, characterized in that, The screening assembly includes a first screen plate, a second screen plate, and a base plate stacked together. The screen pulling device further includes a separation drive component, which is adapted to be connected to the first screen plate, the second screen plate, and the base plate respectively, so as to drive the first screen plate, the second screen plate, and the base plate to move away from each other. The pulling component is adapted to pull the first screen plate, the second screen plate, and the base plate.

9. The screen-pulling device according to claim 8, characterized in that, The first screen, the second screen, and the chassis are all connected to the main shaft via a flipping drive, which is adapted to drive the first screen, the second screen, and the chassis to flip up and down.

10. A filter, characterized in that, It includes a body and a screen-beating device as described in any one of claims 1 to 9, wherein the screen-beating device is disposed on the body.

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