A modular abrasive particle size classification and screening device

Abstract

This invention provides a modular abrasive particle size classification and screening device, belonging to the technical field of screening equipment. It includes a mounting base, an integrated cylindrical body, and multiple independent screening modules. The integrated cylindrical body is mounted on the mounting base, and the multiple independent screening modules are arranged vertically from top to bottom along the interior of the integrated cylindrical body. Each independent screening module includes a screen frame and a screen mesh, and the screen mesh aperture of each module gradually decreases from top to bottom to achieve particle size classification and screening of the abrasive. The outer ring of the screen frame has a double-wall structure, forming a closed annular cavity between the double walls. Multiple guide sleeves are vertically arranged inside the annular cavity, and each guide sleeve contains a cleaning ball that can reciprocate vertically within the guide sleeve. This device, through the integrated cylindrical body and independent screening modules, utilizes the gradual change in screen mesh aperture and vibration to classify the abrasive. The cleaning balls impact elastic impact plates to vibrate the screen, preventing clogging.

Description

Technical Field

[0001] This invention belongs to the field of screening equipment technology, and in particular to a modular abrasive particle size classification and screening device. Background Technology

[0002] Abrasive particle size classification and screening equipment is a specialized device for classifying and sorting abrasive particles by size. Its advantages include accurate classification, high screening efficiency, and applicability to abrasive production, powder sorting, industrial abrasive processing and other fields.

[0003] Currently, abrasive particle size classification and screening equipment typically does not employ a modular, independent screening structure. Screening units cannot be independently disassembled, replaced, or maintained, resulting in poor modularity and adaptability to different classification levels. Furthermore, screens are prone to clogging during screening, and the equipment lacks supporting vibration cleaning and auxiliary cleaning mechanisms. Clogging is difficult to clean and the cleaning effect is poor, which not only reduces screening efficiency and classification accuracy but also affects the continuous and stable operation of the equipment. Therefore, improvements are needed. To address these issues, we propose a modular abrasive particle size classification and screening equipment. Summary of the Invention

[0004] To address the aforementioned shortcomings, this invention provides a modular abrasive particle size classification and screening device to solve the problems of low modularity of screening equipment, difficulty in independently disassembling and maintaining screening units, easy clogging of screens and lack of cleaning mechanisms, which in turn lead to low screening efficiency and classification accuracy, and the inability of the equipment to operate continuously and stably.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A modular abrasive particle size classification and screening device includes a mounting base, an integrated cylindrical body, and multiple sets of independent screening modules. The integrated cylindrical body is mounted on the mounting base, and the multiple sets of independent screening modules are arranged vertically from top to bottom along the interior of the integrated cylindrical body. Each set of independent screening modules includes a screen frame and a screen mesh, and the screen mesh aperture of each set of independent screening modules gradually decreases from top to bottom to achieve particle size classification and screening of abrasives. The outer ring of the screen frame has a double-wall structure, and a closed annular cavity is formed between the double-wall structure. Multiple sets of guide sleeves are arranged vertically inside the annular cavity, and each set of guide sleeves contains a cleaning ball, which can reciprocate vertically within the guide sleeve.

[0007] In a further embodiment, the upper wall of the annular cavity corresponds to the top end of each of the guide sleeves and is fixedly provided with an elastic impact piece; the bottom of the elastic impact piece corresponds to the top end of the guide sleeve, and the top of the elastic impact piece abuts against the bottom surface of the screen; when the cleaning ball moves vertically upward in the guide sleeve, it can impact the elastic impact piece and make it vibrate and strike the screen.

[0008] In a further embodiment, the inner wall of the screen frame is provided with an annular tension groove, and an elastic tension ring is engaged in the annular tension groove; the outer periphery of the screen is engaged in the annular tension groove and is pressed and fixed by the elastic tension ring.

[0009] In a further embodiment, an arc-shaped scraper is provided on the inner wall of the sieve frame and at the bottom of the sieve mesh. A flexible brush is provided on the side of the arc-shaped scraper facing the sieve mesh, and the flexible brush is in contact with the bottom of the sieve mesh. An operating handle is detachably connected to the end of the arc-shaped scraper away from the sieve mesh. The side wall of the integrated cylindrical body is provided with an adapter through hole corresponding to each independent screening module. The operating handle passes through the through hole and extends to the outside. An elastic sealing ring is sleeved between the operating handle and the through hole.

[0010] In a further embodiment, when the equipment is vibrating normally during screening, the operating handle is in a detached state, the through hole is sealed by a plug, the arc-shaped scraper has a gap with the inner wall of the screen frame, and the flexible brush is always lightly attached to the bottom of the screen and vibrates synchronously with the independent screening module to assist in clearing blockages; when manual cleaning is required, the operating handle can be detachably installed on the arc-shaped scraper to drive the arc-shaped scraper to rotate and clean the screen.

[0011] In a further embodiment, the side wall of the integrated cylindrical body is provided with a discharge port corresponding to the position of each group of independent screening modules; the screen frame is provided with a matching discharge channel corresponding to the discharge port, and the screened abrasive can be discharged from the discharge port through the discharge channel.

[0012] In a further embodiment, the bottom of the integrated cylindrical body has multiple sets of mounting slots along the circumferential direction. Each set of mounting slots can be detachably installed with a vibration drive module. Each set of vibration drive modules includes a vibration motor and a mounting base. The vibration motor is fixed on the mounting base, and the mounting base is detachably connected to the mounting slot by bolts.

[0013] In a further embodiment, the inner wall of the integrated cylindrical cylinder is integrally formed with a support shoulder corresponding to the bottom position of the multiple sets of independent screening modules. The support shoulder is provided with multiple sets of positioning bosses and multiple sets of springs along the circumferential direction, and the multiple sets of positioning bosses and multiple sets of springs are staggered.

[0014] In a further embodiment, the bottom of the screen frame in the independent screening module is provided with slots that are adapted to multiple sets of positioning bosses. The positioning bosses can be inserted into the slots to achieve radial positioning and circumferential limiting of the independent screening module. The top ends of multiple sets of springs abut against the bottom of the screen frame to provide elastic support for the independent screening module.

[0015] In a further embodiment, the vibration drive module is configured as four units and arranged symmetrically along the circumference. When the vibration drive module is working, it drives the integrated cylindrical body to vibrate. The spring on the support shoulder transmits the vibration to the independent screening module. The positioning boss cooperates with the slot at the bottom of the screen frame to achieve stable vibration.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The device of the present invention is equipped with an integrated cylindrical body, multiple independent screening modules, guide sleeves and cleaning balls, etc. It utilizes the setting of the screen mesh diameter of the independent screening modules gradually decreasing from top to bottom and vibration drive to enable the abrasive to achieve particle size classification and screening, which facilitates graded discharge. The cleaning balls can move vertically back and forth in the guide sleeve. At this time, the cleaning balls use their own movement to impact the elastic impact plate, which can drive the screen to vibrate and avoid screen blockage.

[0018] 2. At the same time, the present invention uses an elastic tension ring to fix the screen, an arc-shaped scraper brush to assist in clearing blockages, and a vibration drive module to vibrate symmetrically, with positioning bosses and spring elastic support to achieve screen stability, convenient clearing of blockages and stable vibration, further improving screening efficiency and grading accuracy; the overall structure is highly modular, easy to disassemble and assemble, and provides stable screening with high practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the assembled structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the disassembled structure of the present invention;

[0021] Figure 3 yes Figure 2 Enlarged view of region A in the middle;

[0022] Figure 4 This is a rear view of the present invention;

[0023] Figure 5 This is a cross-sectional view of the present invention;

[0024] Figure 6 This is a schematic diagram of the independent screening module of the present invention;

[0025] Figure 7 This is a bottom view of the independent screening module of the present invention;

[0026] Figure 8 This is an exploded view of the independent screening module of the present invention.

[0027] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0028] 11. Mounting base; 12. Integrated cylindrical body; 13. Independent screening module; 14. Screen frame; 15. Screen mesh; 16. Annular cavity; 17. Guide sleeve; 18. Cleaning ball; 19. Elastic impact plate; 21. Annular tension groove; 22. Elastic tension ring; 23. Arc-shaped scraper; 24. Flexible brush; 25. Operating handle; 26. Elastic sealing ring; 27. Discharge port; 28. Discharge channel; 29. ​​Mounting groove; 31. Vibration drive module; 32. Vibration motor; 33. Mounting base; 34. Support shoulder; 35. Positioning boss; 36. Spring; 37. Slot. Detailed Implementation

[0029] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solutions of the present invention, but should not be used to limit the scope of protection of the present invention.

[0030] Example:

[0031] Please see Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 8 As shown, this invention provides a modular abrasive particle size classification and screening device, comprising a mounting base 11, an integrated cylindrical body 12, and multiple independent screening modules 13. The overall assembly of the device is based on the mounting base 11 as the supporting carrier. The mounting base 11 is made of high-strength rigid material, with a stable structure that is not easily deformed. It can withstand the impact force generated by vibration during the operation of the device, preventing the overall displacement of the device and providing stable installation support for all upper components. At the same time, the bottom of the mounting base 11 can be adapted and fixed to a pre-set installation structure on the ground, further improving the stability of the device operation. The integrated cylindrical body 12 serves as a closed cavity for abrasive screening and is vertically installed on the mounting base 11. The two are fixedly connected by bolts, ensuring a firm installation and good sealing. This prevents abrasive splashing and dust leakage during the screening process and provides a regular installation space for multiple independent screening modules 13, ensuring that each screening module works collaboratively without interfering with each other.

[0032] Multiple independent screening modules 13 are arranged vertically from top to bottom along the interior of the integrated cylindrical body 12. Adopting a modular design, each independent screening module 13 can be disassembled, installed, and replaced individually, facilitating later maintenance, screen replacement 15, and combination adaptation for different grading requirements, thus improving the equipment's versatility and convenience. Each independent screening module 13 consists of a screen frame 14 and a screen 15. The screen frame 14 provides installation support for the screen 15, which is the core component for abrasive particle size classification. It strictly follows the gradient principle of larger apertures at the top and smaller apertures at the bottom, meaning the aperture of the screen 15 in the multiple independent screening modules gradually decreases from top to bottom. This gradient arrangement enables step-by-step grading and screening of abrasive particles. Larger particles are retained on the upper screen 15, while smaller particles pass through the lower screen 15 sequentially, ultimately achieving the grading of abrasive particles of different sizes, avoiding mixing of different particle sizes, and ensuring grading quality.

[0033] The outer ring of the screen frame 14 adopts a double-wall structure, forming a closed annular cavity 16 between the double walls. The annular cavity 16 provides installation and movement space for the unclogging components, while reducing the loss of vibration energy and ensuring that the vibration energy is transmitted to the screen 15. Multiple sets of guide sleeves 17 are evenly arranged vertically inside the annular cavity 16. The guide sleeves 17 are fixedly connected to the double walls of the screen frame 14 and arranged vertically. Each guide sleeve contains a cleaning ball 18. The cleaning ball 18 is made of wear-resistant and weight-bearing elastic material and can move freely back and forth vertically within the guide sleeve 17. The guide sleeve 17 guides the cleaning ball 18, ensuring that the cleaning ball 18 always moves vertically and avoiding deviation that would prevent the unclogging function from being achieved.

[0034] On the upper wall of the annular cavity 16, corresponding to the top positions of each guide sleeve 17, there is a fixed elastic impact piece 19. The elastic impact piece 19 is made of a flexible material with excellent elasticity and wear resistance, and has good vibration transmission performance. Its bottom is matched with the top of the guide sleeve 17, and its top is pressed against the bottom surface of the screen 15, forming a linkage unblocking structure from the cleaning ball 18 to the elastic impact piece 19 to the screen 15. When the equipment vibrates during operation, the cleaning ball 18 is affected by the vibration and moves vertically back and forth in the guide sleeve 17. When the cleaning ball 18 moves upward, it will impact the elastic impact piece 19 at high speed. The elastic impact piece 19 generates high-frequency vibration after being impacted, and then vibrates and knocks the bottom surface of the screen 15. The vibration impact force shakes off the fine abrasive material blocking the mesh of the screen 15, realizing the automatic unblocking of the screen 15, avoiding the reduction of screening efficiency and grading accuracy caused by the screen 15 being blocked, and ensuring the continuous and stable operation of the screening operation.

[0035] An annular tension groove 21 is provided on the inner wall of the screen frame 14. The annular tension groove 21 is arranged around the inner wall of the screen frame 14 for installing and fixing the screen 15. An elastic tension ring 22 is clamped in the annular tension groove 21. The elastic tension ring 22 is made of elastic material and has good shrinkage and expansion capabilities. The outer periphery of the screen 15 is clamped in the annular tension groove 21 and fixed by the elastic pressing action of the elastic tension ring 22. This fixing method not only ensures that the screen 15 is installed firmly and does not loosen, but also keeps the screen 15 flat, avoiding the screen 15 from loosening and wrinkling, which would lead to inaccurate abrasive screening. At the same time, it is convenient to disassemble and replace the screen 15. When the screen 15 is worn or needs to be replaced with a screen 15 with a different aperture, the elastic tension ring 22 can be removed to quickly replace the screen 15, reducing maintenance costs and maintenance time.

[0036] An arc-shaped scraper 23 is provided on the inner wall of the screen frame 14 and at the bottom of the screen mesh 15. The arc of the scraper 23 is adapted to the arc of the inner wall of the screen frame 14 and is arranged to fit the inner wall of the screen frame 14. A flexible brush 24 is provided on the side of the arc-shaped scraper 23 facing the screen mesh 15. The flexible brush 24 is made of soft and wear-resistant fiber material to avoid scratching the surface of the screen mesh 15. At the same time, a gap is left between the arc-shaped scraper 23 and the inner wall of the screen frame 14, and the flexible brush 24 always lightly touches the bottom of the screen mesh 15. The end of the arc-shaped scraper 23 away from the screen mesh 15 is connected to an operator's hand in a detachable connection method (such as threaded connection or snap connection). The handle 25 and the side wall of the integrated cylindrical body 12 are provided with through holes that are adapted to the position of each independent screening module 13. The operating handle 25 extends through the through holes to the outside of the equipment for easy manual operation by the operator. At the same time, an elastic sealing ring 26 is fitted between the operating handle 25 and the through hole. The elastic sealing ring 26 fits the operating handle 25 and the inner wall of the through hole to achieve sealing protection, prevent abrasive dust from leaking from the through hole during the screening process, and prevent external impurities from entering the equipment and affecting the screening quality. The rotation angle of the arc scraper 23 is limited to 0-90° to avoid interference.

[0037] When the equipment is in normal screening and vibration operation, the operating handle 25 is in the disassembled state, and the through hole is sealed with a plug to further ensure the equipment's airtightness. At this time, the arc-shaped scraper 23 leaves a certain gap with the inner wall of the screen frame 14, which does not affect the normal vibration of the screen frame 14. The flexible brush 24 is always lightly attached to the bottom of the screen 15 and vibrates synchronously with the independent screening module 13. Through the vibration and friction of the brush, the fine abrasive material attached to the bottom of the screen 15 is swept off, achieving auxiliary unclogging. Combined with the automatic unclogging action of the cleaning ball 18 and the elastic impact plate 19, a double unclogging guarantee is formed to maximize the unclogging protection. To prevent screen 15 from becoming clogged, when screen 15 becomes severely clogged and automatic and auxiliary unclogging methods are insufficient, the plug at the through hole can be removed. The operating handle 25 can be detachably installed on the arc-shaped scraper 23. By rotating the outer operating handle 25, the operator can drive the arc-shaped scraper 23 to rotate along the inner wall of the screen frame 14. The flexible brush 24 rotates synchronously to thoroughly clean the bottom of screen 15, removing the abrasive material clogging the mesh. After cleaning, the operating handle 25 can be removed, and the through hole can be resealed with the plug. The equipment can then resume normal operation. The operation is convenient and the unclogging effect is significant.

[0038] like Figures 2 to 8 As shown, the side wall of the integrated cylindrical body 12 is provided with a discharge port 27 corresponding to the position of each independent screening module 13. The discharge port 27 is connected to the inside of the screen frame 14 and is used to discharge the abrasive after being screened by the corresponding screening module. The screen frame 14 is provided with a matching discharge channel 28 corresponding to the position of the discharge port 27. The discharge channel 28 is arranged at an inclination, with one end connected to the inside of the screen frame 14 and the other end connected to the discharge port 27. After being screened by the screening module, the abrasive that meets the particle size requirements of the grade will slide along the surface of the screen 15 to the discharge channel 28 under the action of vibration, and then be discharged outside the equipment through the discharge port 27 and enter the corresponding collection device to realize the separate collection of abrasive of different particle sizes, avoid the abrasive after grading to mix again, and ensure the integrity and accuracy of grading and screening.

[0039] The bottom of the integrated cylindrical body 12 has multiple sets of mounting slots 29 evenly distributed along the circumference. These slots are used to install vibration drive modules 31, providing vibration power to the equipment. All sets of vibration drive modules 31 can be detached and installed in the mounting slots 29 for easy maintenance, repair, and replacement. Each set of vibration drive modules 31 includes a vibration motor 32 and a mounting base 33. The vibration motor 32 serves as the vibration power source and is fixedly installed on the mounting base 33, ensuring a secure installation and stable vibration. The mounting base 33 is detachably connected to the mounting slots 29 via bolts, facilitating easy assembly and disassembly. Furthermore, all vibration motors 32 are of the same model, ensuring that the vibration force and frequency generated by each vibration drive module 31 are the same. This prevents equipment vibration deviation and unstable vibration of the screening module due to uneven vibration force, which could affect the grading and screening accuracy.

[0040] It should be noted that the vibration motor 32 can be a YZU-5-6 model three-phase asynchronous vibration motor to provide stable and uniform vibration power to the integrated cylindrical body 12. Through the 0.37kW power output and adjustable eccentric block setting, it is ensured that multiple sets of vibration drive modules 31 generate the same vibration force and vibration frequency, avoiding equipment vibration deviation and instability of the screening module, and ensuring the accuracy of grading and screening.

[0041] Four vibration drive modules 31 are arranged symmetrically around the bottom of the integrated cylindrical body 12. This symmetrical arrangement allows the vibration force to be evenly transmitted to all parts of the integrated cylindrical body 12, ensuring stable overall vibration of the equipment and avoiding excessive or weak local vibration. At the same time, it maximizes the vibration transmission efficiency, enabling the vibration energy to be efficiently transmitted to each set of independent screening modules 13, ensuring efficient screening operations. The inner wall of the integrated cylindrical body 12 has integrally formed support shoulders 34 at the bottom positions of multiple sets of independent screening modules 13. The support shoulders 34 are arranged circumferentially around the inner wall of the integrated cylindrical body 12 to support each independent screening module 13, ensuring that the installation position of each screening module is accurate and the spacing is uniform.

[0042] The support shoulder 34 is provided with multiple sets of positioning bosses 35 and multiple sets of springs 36 along its circumferential direction. The multiple sets of positioning bosses 35 and multiple sets of springs 36 are staggered, so that they do not interfere with each other and can work together to provide support and positioning. The bottom of the screen frame 14 in the independent screening module 13 is provided with slots 37 that are adapted to the multiple sets of positioning bosses 35. When installing the independent screening module 13, the slots 37 at the bottom of the screen frame 14 are inserted into the corresponding positioning bosses 35 on the support shoulder 34. This can achieve radial positioning and circumferential limiting of the independent screening module 13, prevent the independent screening module 13 from radially shifting or circumferentially rotating during vibration, ensure the installation stability of the screening module, and at the same time ensure the accurate position of the screen 15, avoiding inaccurate abrasive grading due to displacement of the screening module.

[0043] The tops of multiple sets of springs 36 abut against the bottom of the screen frame 14, providing elastic support for the independent screening module 13. The springs 36 have good elastic deformation capabilities, which can reduce the impact force generated by vibration, prevent hard contact between the independent screening module 13 and the support shoulder 34, avoid wear and damage to components, and extend the service life of the equipment. On the other hand, they can transmit the vibration force generated by the vibration drive module 31 to the independent screening module 13, causing the screen 15 to vibrate at high frequency, improving the screening efficiency and grading accuracy of abrasives. When the vibration drive module 31 is working, the vibration motor 32 drives the mounting base 33 to vibrate, which in turn drives the integrated cylindrical body 12 to vibrate as a whole. The support shoulder 34 vibrates synchronously with the cylinder. The springs 36 undergo elastic deformation under the vibration, uniformly transmitting the vibration force to the independent screening module 13, causing the screen 15 to vibrate stably. The abrasives slide and are screened continuously on the screen 15 due to the vibration. At the same time, the positioning boss 35 cooperates with the slot 37 at the bottom of the screen frame 14 to limit the displacement of the screening module, ensure stable vibration of the screening module, and ensure that the screening operation is carried out in an orderly manner.

[0044] The working principle of this invention is:

[0045] Before operation, select multiple independent screening modules 13 with corresponding apertures according to the particle size range requirements of the abrasive to be screened. Install them sequentially on the support shoulder 34 inside the integrated cylindrical body 12 in order of the aperture of the screen 15 gradually decreasing from top to bottom. During installation, ensure that the slot 37 at the bottom of the screen frame 14 aligns with the positioning boss 35 on the support shoulder 34, and that the top of the spring 36 abuts against the bottom of the screen frame 14 to complete the installation of the screening modules. Then check the installation status of each component to ensure that the screen 15 is taut and flat, the cleaning ball 18 can move freely in the guide sleeve 17, the elastic sealing ring 26 is well sealed, and the discharge port 27 is unobstructed. Remove the operating handle 25 and seal the through hole on the side wall of the cylinder with a plug to complete the preparation before operation.

[0046] During operation, the control device is activated, and four symmetrically arranged vibration drive modules 31 work synchronously. The vibration motor 32 drives the integrated cylindrical body 12 to vibrate as a whole. The spring 36 on the support shoulder 34 transmits the vibration force to each independent screening module 13, causing the screen frame 14 and screen 15 to generate high-frequency stable vibration. The top of the integrated cylindrical body 12 is equipped with a dedicated feed port, through which the abrasive to be screened is smoothly poured into the inside of the cylinder. Under the action of gravity, the abrasive falls evenly from top to bottom and passes through the screens 15 of each level of independent screening modules 13 in sequence. Since the aperture of the screen 15 gradually decreases from top to bottom, the larger particles of abrasive are intercepted by the upper screen 15 and slide along the screen 15 to the discharge channel 28 under the action of vibration, and are discharged and collected through the discharge port 27. The smaller particles of abrasive pass through the current screen 15 and enter the next level screening module, where they are further screened by the screen 15 with a smaller aperture. This process is repeated until the graded screening and separate collection of abrasives of different particle sizes are achieved.

[0047] During the screening process, within the annular cavity 16 of each independent screening module 13, the cleaning ball 18 reciprocates vertically within the guide sleeve 17 due to vibration. As it moves upward, it impacts the elastic impact plate 19, which vibrates and strikes the bottom surface of the screen 15, dislodging the fine abrasive particles clogging the mesh and achieving automatic unclogging. Simultaneously, the flexible brush 24 on the arc-shaped scraper 23 vibrates synchronously with the screening module, gently rubbing and cleaning the bottom of the screen 15, thus assisting in unclogging. This dual unclogging synergy ensures that the screen 15 remains unobstructed, preventing a decrease in screening efficiency. If the screen 15 becomes severely clogged, the equipment can be paused, the plug at the through hole removed, and the operating handle 25 installed on the arc-shaped scraper 23. Rotating the operating handle 25 drives the arc-shaped scraper 23 and the flexible brush 24 to rotate, performing a thorough manual cleaning of the bottom of the screen 15. After cleaning, the operating handle 25 is removed, the through hole is resealed, and the equipment can resume operation.

[0048] After the operation is completed, turn off the vibration drive module 31. After the equipment stops vibrating, collect the abrasive particles of different sizes discharged from each outlet 27. If it is necessary to change the particle size range of the screened abrasive, multiple independent screening modules 13 can be removed one by one and replaced with screens 15 or screening modules of the corresponding aperture. After reinstallation, it can be put into use. During later maintenance, a faulty or worn screening module can be removed for inspection and replacement without disassembling the entire equipment, which greatly improves the convenience of maintenance and reduces maintenance costs.

[0049] Overall, this equipment achieves portable assembly and maintenance of screening units through the modular setting of multiple independent screening modules 13, adapting to the grading requirements of abrasives of different particle sizes; the gradient arrangement of screens 15 with progressively smaller apertures from top to bottom ensures accurate and non-mixed abrasive grading; cleaning balls 18 and elastic impact plates 19, together with arc-shaped scrapers 23 and flexible brushes 24, provide dual protection for automatic and manual unclogging, preventing screen 15 from clogging and ensuring continuous and efficient screening operations; four circumferentially symmetrically arranged vibration drive modules 31, together with the positioning bosses 35 on the support shoulders 34, springs 36, and the slots 37 at the bottom of the screen frame 14, form an elastic support and positioning structure, ensuring stable equipment vibration and accurate screen 15 positioning, further improving grading and screening accuracy.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A modular abrasive particle size classification and screening device, comprising a mounting base (11), an integrated cylindrical body (12), and multiple sets of independent screening modules (13), characterized in that: The integrated cylindrical body (12) is installed on the mounting base (11). Multiple sets of independent screening modules (13) are arranged vertically from top to bottom along the interior of the integrated cylindrical body (12). Each set of independent screening modules (13) includes a screen frame (14) and a screen mesh (15). The aperture of the screen mesh (15) of each set of independent screening modules (13) gradually decreases from top to bottom to achieve particle size classification and screening of abrasive. The outer ring of the screen frame (14) is a double-wall structure, and a closed annular cavity (16) is formed between the double walls. Multiple sets of guide sleeves (17) are arranged vertically inside the annular cavity (16). Each set of guide sleeves (17) is equipped with a cleaning ball (18). The cleaning ball (18) can reciprocate vertically inside the guide sleeve (17).

2. The modular abrasive particle size classification and screening device according to claim 1, characterized in that: The upper wall of the annular cavity (16) corresponds to the top end of each of the guide sleeves (17), and each is fixedly provided with an elastic impact piece (19); the bottom of the elastic impact piece (19) corresponds to the top end of the guide sleeve (17), and the top of the elastic impact piece (19) abuts against the bottom surface of the screen (15) upward; when the cleaning ball (18) moves vertically upward in the guide sleeve (17), it can impact the elastic impact piece (19) and make it vibrate and strike the screen (15).

3. The modular abrasive particle size classification and screening device according to claim 1, characterized in that: The inner wall of the sieve frame (14) is provided with an annular tension groove (21), and an elastic tension ring (22) is fitted inside the annular tension groove (21); the outer periphery of the sieve mesh (15) is fitted inside the annular tension groove (21) and is pressed and fixed by the elastic tension ring (22).

4. The modular abrasive particle size classification and screening device according to claim 1, characterized in that: An arc-shaped scraper (23) is provided on the inner wall of the sieve frame (14) and at the bottom of the sieve mesh (15). A flexible brush (24) is provided on the side of the arc-shaped scraper (23) facing the sieve mesh (15). The flexible brush (24) is in contact with the bottom of the sieve mesh (15). An operating handle (25) is detachably connected to the end of the arc-shaped scraper (23) away from the sieve mesh (15). The side wall of the integrated cylindrical body (12) is provided with matching through holes corresponding to each independent screening module (13). The operating handle (25) passes through the through hole and extends to the outside. An elastic sealing ring (26) is sleeved between the operating handle (25) and the through hole.

5. The modular abrasive particle size classification and screening device according to claim 4, characterized in that: When the equipment is vibrating normally during screening, the operating handle (25) is in a disassembled state, the through hole is sealed by a plug, the arc-shaped scraper (23) has a gap with the inner wall of the screen frame (14), the flexible brush (24) always lightly touches the bottom of the screen (15), and vibrates synchronously with the independent screening module (13) to assist in clearing blockages; when manual cleaning is required, the operating handle (25) can be detachably installed on the arc-shaped scraper (23) to drive the arc-shaped scraper (23) to rotate and clean the screen (15).

6. The modular abrasive particle size classification and screening device according to claim 1, characterized in that: The side wall of the integrated cylindrical body (12) is provided with a discharge port (27) corresponding to the position of each independent screening module (13); the screen frame (14) is provided with a matching discharge channel (28) corresponding to the discharge port (27), and the abrasive after screening can be discharged from the discharge port (27) through the discharge channel (28).

7. The modular abrasive particle size classification and screening device according to claim 1, characterized in that: The bottom of the integrated cylindrical body (12) has multiple sets of mounting slots (29) along the circumferential direction. Each set of mounting slots (29) can be detachably installed with a vibration drive module (31). Each set of vibration drive modules (31) includes a vibration motor (32) and a mounting base (33). The vibration motor (32) is fixed on the mounting base (33), and the mounting base (33) is detachably connected to the mounting slot (29) by bolts.

8. The modular abrasive particle size classification and screening device according to claim 7, characterized in that: The inner wall of the integrated cylindrical body (12) is integrally formed with a support shoulder (34) at the bottom position of the multiple independent screening modules (13). The support shoulder (34) is provided with multiple positioning bosses (35) and multiple springs (36) along the circumferential direction. The multiple positioning bosses (35) and multiple springs (36) are staggered.

9. A modular abrasive particle size classification and screening device according to claim 8, characterized in that: The bottom of the screen frame (14) in the independent screening module (13) is provided with slots (37) that are adapted to multiple sets of positioning bosses (35). The positioning bosses (35) can be inserted into the slots (37) to achieve radial positioning and circumferential limiting of the independent screening module (13). The tops of multiple sets of springs (36) abut against the bottom of the screen frame (14) to provide elastic support for the independent screening module (13).

10. A modular abrasive particle size classification and screening device according to claim 9, characterized in that: The vibration drive module (31) is set to four units and arranged symmetrically along the circumference. When the vibration drive module (31) is working, it drives the integrated cylindrical body (12) to vibrate. The spring (36) on the support shoulder (34) transmits the vibration to the independent screening module (13). The positioning boss (35) cooperates with the bottom slot (37) of the screen frame (14) to achieve stable vibration.

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