Wet screening device

Abstract

A wet screening device comprises a feeding assembly, a storage assembly, a screen assembly and a scraper assembly. And the feeding assembly and the storage assembly are correspondingly arranged. And the screen assembly is arranged between the feeding assembly and the storage assembly. The scraper assembly is arranged on the side, facing the feeding assembly, of the screen assembly and comprises a flexible scraper, and the flexible scraper is movably arranged on one side of the screen assembly. The wet type screening device has the advantage that the material particle crushing risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of analysis and detection, concretely relates to a wet type screening device. BACKGROUND

[0002] Generally, the wet type screening device includes a vibrating base, a swing base and a water tank base are arranged on the vibrating base, a circular water tank is equipped on the water tank base, a standard sleeve screen is placed inside the circular water tank, a standard sleeve screen lifting device that can realize lifting of the standard sleeve screen in the circular water tank is arranged on the standard sleeve screen, and the vibrating device drives the swing base to horizontally and vertically vibrate, and the lifting device is controlled by the control device to control the extension and retraction of the lifting device and the frequency of the vibrating device.

[0003] However, the vibration operation of the wet type screening device causes accidental breakage of part of the original large material particles, which seriously distorts the screening result and cannot accurately reflect the real production process parameter condition of the product. In the detection process of many chemical, food, metallurgical and other industries that require strict accuracy of product particle size composition, this defect seriously hinders the accurate evaluation and optimization process of the production process, may cause process adjustment errors, product quality fluctuations and other chain reactions, greatly limits the application performance and popularization prospect of the existing wet type vibrating screen in the high-end fine production detection field, and needs to be improved and innovated to meet the development needs of the industry. SUMMARY

[0004] Therefore, the wet type screening device can effectively reduce the risk of material particle breakage and ensure that the screening result accurately reflects the particle size characteristics of the original powder.

[0005] A wet type screening device includes a feeding assembly, a storage assembly, a screen assembly and a scraper assembly. The feeding assembly is arranged corresponding to the storage assembly. The screen assembly is arranged between the feeding assembly and the storage assembly. The scraper assembly is arranged on one side of the screen assembly facing the feeding assembly, and the scraper assembly includes a flexible scraper movably arranged on one side of the screen assembly.

[0006] In some possible embodiments, the flexible scraper includes a body portion and a plurality of flexible portions extending from one side of the body portion, and the plurality of flexible portions are used to push the powder material located on the screen assembly.

[0007] In some possible embodiments, the body portion includes a first rod portion and a second rod portion, the first rod portion and the second rod portion are cross-connected, and a plurality of flexible portions are distributed along a curve on one side of the first rod portion and the second rod portion facing the screen assembly.

[0008] In some possible embodiments, the scraper assembly further comprises a driving member and a transmission member, one end of the transmission member being connected to the driving member, and the other end of the transmission member being connected to the joint of the first rod portion and the second rod portion.

[0009] In some possible embodiments, the screen assembly comprises a plurality of stacked screens, the flexible scraper being movably arranged on one of the screens closest to the feeding assembly, and the mesh size of one of the screens closest to the storage assembly being smaller than that of the other screen closest to the feeding assembly.

[0010] In some possible embodiments, the feeding assembly comprises a first housing, a feeding funnel and a liquid inlet member, the feeding funnel being arranged on the top surface of the first housing, and the liquid inlet member being arranged on the side surface of the first housing, the first housing being connected to the edge of the screen.

[0011] In some possible embodiments, the screen comprises a screen frame and a filter screen, the screen frame being arranged around the periphery of the filter screen, and one end of the screen frame being sealingly connected to the first housing.

[0012] In some possible embodiments, the storage assembly comprises a second housing and a liquid outlet member, the liquid outlet member being arranged on the side surface of the second housing, and the second housing being sealingly connected to the other end of the screen frame.

[0013] In some possible embodiments, the wet screening device further comprises a circulating filter member, the circulating filter member being connected to the liquid outlet member and the liquid inlet member.

[0014] In some possible embodiments, the wet screening device further comprises a buffer pad, the buffer pad being arranged at the end of the storage assembly away from the screen assembly.

[0015] In the present application, the material is delivered to the corresponding storage assembly through the feeding assembly, and the screening operation is performed by the screen assembly arranged between the feeding assembly and the storage assembly. The scraper assembly is arranged on the side of the screen assembly facing the feeding assembly, and the scraper assembly comprises a flexible scraper movably arranged on the side of the screen assembly. The flexible scraper can flexibly scrape and clean the surface of the screen, so as to avoid the breakage of large material particles due to rigid extrusion, collision and the like at the screen, thereby effectively reducing the risk of breakage of large material particles and ensuring that the screening result accurately reflects the particle size characteristics of the original powder. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure schematic diagram of the wet screening device provided by some embodiments of the present application is shown.

[0017] Figure 2 FIG. 4 is a cross-sectional view of a flexible scraper of the wet screening device shown in FIG. 1. Figure 1

[0018] Figure 3 FIG. 5 is a bottom view of the flexible scraper shown in FIG. 4. Figure 2

[0019] Figure 4 FIG. 6 is a schematic view of a screen assembly of the wet screening device shown in FIG. 1. Figure 1

[0020] Explanation of Main Element Symbols

[0021] Wet Screening Device 100

[0022] Feed Assembly 10

[0023] First Housing 11

[0024] Feed Hopper 12

[0025] Liquid Feed Member 13

[0026] Screen Assembly 20

[0027] Screen 21

[0028] Screen Frame 211

[0029] Filter Mesh 212

[0030] Storage Assembly 30

[0031] Second Housing 31

[0032] Liquid Discharge Member 32

[0033] Scraper Assembly 40

[0034] Flexible Scraper 41

[0035] Body Portion 411

[0036] First Rod Portion 411a

[0037] Second Rod Portion 411b

[0038] Flexible Portion 412

[0039] Drive Member 42

[0040] Transmission Member 43

[0041] Circulating Filter Member 50

[0042] Cushion 60 DETAILED DESCRIPTION

[0043] ​​​Embodiments of the present application are described in detail below. The embodiments described below with reference to the drawings are exemplary only, and are used to explain the present application, and are not to be understood as limiting the present application; it should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which the present application belongs; the embodiments of the present application and the features in the embodiments can be combined with each other without conflict, if necessary; in the following description, many specific details are set forth in order to provide a thorough understanding of the present application, and the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0044] In the embodiments of the present application, in order not to limit the present application, the term "connection" used in the patent application description and claims of the present application is not limited to physical or mechanical connection, whether direct or indirect. "Up", "down", "above", "below", "left", "right", and the like are only used to indicate relative positional relationships, which change accordingly when the absolute position of the described object changes.

[0045] Please refer to Figure 1 An embodiment of the present application provides a wet screening device 100, which is suitable for high-precision wet screening of fine powder materials in many industries such as chemical industry, food industry, pharmaceutical industry, etc., to accurately distinguish the material components of different particle size grades, and to help quality control and process optimization in production process. The wet screening device 100 includes a feeding assembly 10, a screen assembly 20, a storage assembly 30, and a scraper assembly 40. The feeding assembly 10 and the storage assembly 30 are correspondingly and spacedly arranged, and the screen assembly 20 is connected between the feeding assembly 10 and the storage assembly 30. The scraper assembly 40 is arranged on the side of the screen assembly 20 facing the feeding assembly 10. The scraper assembly 40 includes a flexible scraper 41, which is movably arranged on one side of the screen assembly 20. Specifically, the material of the flexible scraper 41 includes a high-molecular elastic material or a composite rubber material, such as one of polyurethane rubber, natural rubber and styrene-butadiene rubber blend, or silica gel.

[0046] In use, the user adds powder material and liquid into the feeding assembly 10. Under the agitation of the flexible scraper 41, the powder material and liquid are mixed to form a suspension containing particles of different sizes. The particles are moved by gravity towards the screen assembly 20. Part of the liquid and the particles of smaller size can pass through the screen assembly 20 and enter the storage assembly 30, while the particles of larger size are blocked by the screen assembly 20. The flexible scraper 41 is movably arranged at one side of the screen assembly 20. During the movement of the flexible scraper 41, on the one hand, the flexible scraper 41 can push the particles of material near the screen assembly 20, promote the particles of smaller size to pass through the screen assembly 20, and reduce the residence time of the particles of smaller size in the screen assembly 20, thereby reducing the risk of breaking of the particles of smaller size on the screen assembly 20. On the other hand, the flexible scraper 41 has the characteristics of flexible material, and its material has a suitable elastic modulus and damping coefficient. When the flexible scraper 41 contacts the particles of larger size, it can adaptively deform, prolong the contact time, and disperse the stress, thereby effectively buffering the impact force in the pushing moment, dispersing the pushing stress, reducing the stress concentration on the local particles of larger size, reducing the impact on the particles of larger size, effectively reducing the risk of breaking of the particles of larger size, and ensuring that the screening result correctly reflects the particle size characteristics of the original powder material.

[0047] Please refer to Figure 2 In some embodiments, the flexible scraper 41 includes a body portion 411 and a plurality of flexible portions 412 extending from one side of the body portion 411. The plurality of flexible portions 412 are used to push the powder material on the screen assembly 20. The body portion 411 is made of a rigid material, such as aluminum alloy. The body portion 411 made of aluminum alloy provides a stable structure and reliable support for the scraper. The high strength and low density characteristics of the aluminum alloy material ensure uniform and stable pushing force, reduce the overall weight of the scraper, and reduce the energy consumption and load of the equipment during operation. At the same time, the body portion 411 made of aluminum alloy can effectively agitate the suspension. The flexible portions 412 are made of a flexible material, such as silicone rubber. The silicone rubber flexible portions 412 have excellent chemical stability, wide temperature adaptability, and high flexibility, which is beneficial to protect the screen assembly 20 and reduce damage and contamination of the material when pushing the material gently under complex working conditions.

[0048] Please refer to Figure 3In some embodiments, the body portion 411 is substantially in the shape of a "cross", and the body portion 411 includes a first rod portion 411a and a second rod portion 411b which are cross-connected. A plurality of flexible portions 412 are distributed along a curve on one side of the first rod portion 411a and one side of the second rod portion 411b towards the screen assembly 20. The plurality of flexible portions 412 distributed along the curve can push the material particles from a plurality of different directions, and the movement trajectories of the material particles form a complex and coordinated material guiding network. When the flexible scraper 41 moves, each flexible portion 412 moves according to the preset curve path, and a multi-dimensional pushing field is constructed at different areas of the screen assembly 20, and a multi-directional resultant force acts on the material agglomerates or the stuck particles, so as to improve the material dispersion uniformity and flowability. In addition, the curve distribution is consistent with the material stress dispersion principle, reduces the local impact and wear of the scraper on the material and the screen 21, prolongs the service life of the equipment, and optimizes the comprehensive performance of the wet screening device 100 from the aspects of material processing precision, equipment operation stability, and maintenance economy.

[0049] Please refer again to Figure 1 In some embodiments, the scraper assembly 40 further includes a driving member 42 and a transmission member 43. One end of the transmission member 43 is connected to the driving member 42, and the other end of the transmission member 43 is connected to the cross-connection position of the first rod portion 411a and the second rod portion 411b. The driving member 42 includes an electric motor. The transmission member 43 includes a rotating shaft. The motor drives the flexible scraper 41 to make a circular motion relative to the screen assembly 20 through the transmission shaft. In other embodiments, the transmission member 43 includes a crank rocker mechanism, and the crank rocker mechanism includes a crank, a connecting rod, a rocker, and a frame. One end of the crank is connected to the output shaft of the motor, and the end of the rocker is hinged to the cross-connection position of the first rod portion 411a and the second rod portion 411b. When the motor rotates, the crank makes a circular motion which is converted into the reciprocating swing of the rocker through the connecting rod, and the scraper makes an elliptical motion relative to the screen assembly 20 according to the designed geometric parameters, which is consistent with the scene of uneven material particle size and differential processing, and improves the screening accuracy and adaptability. Alternatively, the transmission member 43 includes a cam mechanism and a universal joint. The profile curve of the cam is designed by inverse kinematics, which cooperates with the roller follower and is connected to the cross-connection position of the first rod portion 411a and the second rod portion 411b through the universal joint. The motor drives the cam to rotate, and the follower moves according to the profile and compensates for the angle deviation through the universal joint, so as to drive the scraper to make a random motion relative to the screen assembly 20. The random motion simulates manual multi-directional pushing, effectively processes agglomerated and adhered materials, and has unique advantages in complex material screening, expands the breadth and depth of device application, and meets the needs of multiple industries.

[0050] Please refer to Figure 4In some embodiments, the screen assembly 20 comprises a plurality of stacked screens 21, and the flexible scraper 41 is movably arranged on the screen 21 closest to the feeding assembly 10. In the adjacent two screens 21, the mesh size of the screen 21 closer to the storage assembly 30 is smaller than that of the screen 21 closer to the feeding assembly 10. In this way, the plurality of screens 21 are arranged in a vertical direction, and the mesh size decreases from top to bottom, so as to achieve more detailed classification, reduce the load of a single screen 21, and reduce the impact of the granular material.

[0051] Please refer again to Figure 1 In some embodiments, the feeding assembly 10 comprises a first housing 11, a feeding hopper 12, and a liquid inlet 13. The feeding hopper 12 is arranged on the top surface of the first housing 11, and is used to add the powder material. The liquid inlet 13 is arranged on the side surface of the first housing 11, and is used to add water. The first housing 11 is connected to the edge of the screen 21. The driving member 42 is centrally arranged on the top surface of the first housing 11. In this way, it is beneficial to reduce the adverse effects of the vibration of the driving member 42 on the structural stability and the screening accuracy of the entire wet screening device 100. In addition, the central arrangement makes the vibration generated by the driving member 42 during operation spread, offset or weaken in an approximately symmetrical manner, avoiding local stress concentration, which may cause the device components to loosen, deform or resonate, thereby causing additional noise and accuracy deviation.

[0052] In some embodiments, the screen 21 comprises a screen frame 211 and a filter screen 212, the screen frame 211 is arranged around the periphery of the filter screen 212, and one end of the screen frame 211 is sealingly connected to the first housing 11. In this way, on the one hand, it can effectively prevent the suspension from leaking from the connection between the screen 21 and the first housing 11 during the screening process, thereby avoiding the loss of material particles and the pollution of the surrounding environment. On the other hand, the sealing connection helps to maintain a stable pressure environment at the screen 21, so as to ensure that the suspension can uniformly pass through the filter screen 212 for screening under the action of a relatively stable pressure, thereby avoiding the influence of external air or other factors on the pressure fluctuation, and further affecting the smoothness of the material particles passing through the mesh and the accuracy of the screening.

[0053] In some embodiments, the storage assembly 30 comprises a second housing 31 and a liquid outlet 32. The liquid outlet 32 is arranged on the side surface of the second housing 31, and the second housing 31 is sealingly connected to the other end of the screen frame 211. In this way, it can ensure that the liquid and fine particles that pass through the screen 21 are effectively collected and stored after smoothly entering the storage assembly 30, and the sealing connection eliminates the risk of leakage, thereby protecting the integrity of the material and the safety of the environment. The liquid outlet 32 comprises a liquid outlet pipeline.

[0054] In some embodiments, the wet screening device 100 further comprises a circulating filter 50, which is connected to the liquid discharge member 32 and the liquid inlet member 13. The circulating filter 50 comprises a filter box, filter cartridges and a circulating pump. The filter box is internally provided with multiple layers of filter cartridges. The circulating pump is responsible for providing power to drive the liquid to be extracted from the liquid discharge member 32, filtered by the filter box, and then delivered to the liquid inlet member 13. The liquid inlet member 13 comprises a liquid inlet pipeline.

[0055] In operation, the circulating pump is started to draw the liquid containing impurities discharged from the liquid discharge member 32 in the storage assembly 30 into the filter box. The liquid is filtered by the filter cartridges to obtain liquid with higher purity, which is then pushed by the circulating pump into the liquid inlet member 13 to mix with new material particles to form a suspension. In this way, the liquid is recycled, reducing water waste and waste liquid discharge, and reducing production costs and environmental pressure.

[0056] In some embodiments, the wet screening device 100 further comprises a buffer pad 60, which is arranged at the end of the storage assembly 30 away from the screen assembly 20. In this way, when there are large material particles that are not completely intercepted by the screen 21 and accidentally pass through the screen 21 or impact generated by the operation of the device is transmitted to the bottom of the storage assembly 30, the buffer pad 60 can effectively absorb and disperse these impact forces, avoiding deformation, damage or noise of the storage assembly 30 due to excessive impact. The buffer pad 60 is made of materials with high elasticity and high damping properties, such as rubber or polyurethane foam. At the same time, it also reduces the adverse effects of equipment vibration and noise on the working environment and operating personnel, further improving the applicability and practicality of the wet screening device 100 in various industrial scenarios.

[0057] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced without departing from the spirit and scope of the present application.

Claims

1. A wet screening apparatus characterized by, The wet-type screening device comprises: a feeding assembly; a storage assembly corresponding to the feeding assembly; a screen assembly arranged between the feeding assembly and the storage assembly; a scraper assembly arranged on one side of the screen assembly facing the feeding assembly, the scraper assembly comprising a flexible scraper movably arranged on one side of the screen assembly.

2. The wet screening device of claim 1, wherein, The flexible scraper comprises a body portion and a plurality of flexible portions extending from one side of the body portion, the flexible portions being used to push the powder material on the screen assembly.

3. The wet screening device of claim 2, wherein, The body portion comprises a first rod portion and a second rod portion, the first rod portion and the second rod portion being cross-connected, and the flexible portions being distributed along a curve on one side of the first rod portion and the second rod portion facing the screen assembly.

4. The wet screening apparatus of claim 3, wherein, The scraper assembly further comprises a driving member and a transmission member, one end of the transmission member being connected to the driving member, and the other end of the transmission member being connected to the cross-connection of the first rod portion and the second rod portion.

5. The wet screening device of claim 1, wherein, The screen assembly comprises a plurality of stacked screens, the flexible scraper being movably arranged on one of the screens closest to the feeding assembly, and the mesh of one of the screens closer to the storage assembly being smaller than the mesh of the other screen closer to the feeding assembly among two adjacent screens.

6. The wet screening device of claim 5, wherein, The feeding assembly comprises a first housing, a feeding funnel arranged on the top surface of the first housing, and a liquid inlet member arranged on the side surface of the first housing, the first housing being connected to the edge of the screen.

7. The wet screening apparatus of claim 6, wherein, The screen comprises a screen frame and a filter screen, the screen frame being arranged around the periphery of the filter screen, and one end of the screen frame being sealingly connected to the first housing.

8. The wet screening device of claim 7, wherein, The storage assembly comprises a second housing and a liquid outlet member arranged on the side surface of the second housing, the second housing being sealingly connected to the other end of the screen frame.

9. The wet screening device of claim 8, wherein, The wet-type screening device further comprises a circulating filter member, the circulating filter member being connected to the liquid outlet member and the liquid inlet member.

10. The wet screening device of claim 1, wherein, The wet-type screening device further comprises a buffer pad arranged on one end of the storage assembly away from the screen assembly.

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