A fine particle sizing device

Abstract

The utility model discloses a kind of fine particle screening devices, including mounting bracket, mounting bracket upper slide installation has mounting seat, two groups of symmetric distribution are rotatably installed in the mounting seat and are rolled up pole, mounting seat upper fixed installation has cover, screen belt is equipped between the mounting seat and cover, screen belt and cover sliding joint, two ends of screen belt are respectively wound with two groups of rolled up pole, two groups of rolled up pole are all sleeved with synchronous wheel, synchronous belt is equipped in the mounting seat, synchronous belt is respectively connected with two groups of synchronous wheel transmission, the drum brush is rotatably installed on the mounting seat, the condition that material particle is fundamentally destroyed at screen hole place to form bridge or jam by the continuous movement of screen belt, significantly improve screening efficiency and capacity, integrated drum brush and scraper brush cleaning system, drum brush and the surface of moving screen belt are closely adhered, scraper brush and drum brush adhere, so that cleaning action is synchronized in screening operation process.

Description

Technical Field

[0001] This utility model relates to the field of fine particle screening technology, specifically to a fine particle screening device. Background Technology

[0002] Fine particle size separation refers to the process of separating materials with small particle sizes (usually less than 0.2 mm) using a sieve. It is mainly used to process finer materials, aiming to separate them into different grades according to particle size. Fine particle size separation has wide applications in industry, such as in mineral processing, building materials, and chemicals. Through fine particle size separation, minerals can be better identified, their content determined, and the quality and efficiency of mechanical separation improved.

[0003] In existing technologies, traditional vibrating screens experience a screen clogging rate of 30% to 50% when screening ultrafine materials, severely impacting screening efficiency and production capacity. Currently, high-frequency vibration of the screen is typically achieved by driving the screen mesh through an eccentric wheel or electromagnetic vibrator, utilizing inertial force to dislodge the material from the screen mesh. However, this method has limited effectiveness for extremely fine particles, and vibration leads to screen mesh fatigue and wear, shortening its service life. Some devices install rigid cleaning brushes below or to the side of the screen mesh, but fixed brushes can only clean a localized area of ​​the screen mesh, limiting the cleaning range. Furthermore, the screening device needs to be stopped during the cleaning process, affecting the continuity of equipment operation and work efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a fine particle screening device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fine particle screening device, including a mounting frame, a mounting base slidably mounted on the top of the mounting frame, two sets of symmetrically distributed winding rods rotatably mounted inside the mounting base, a cover fixedly mounted on the top of the mounting base, a screen belt between the mounting base and the cover, the screen belt slidably engaging with the cover, both ends of the screen belt being wound around the two sets of winding rods respectively, each set of winding rods being fitted with a synchronous pulley, a synchronous belt inside the mounting base, the synchronous belt being drivenly connected to the two sets of synchronous pulleys respectively, a roller brush rotatably mounted on the mounting base, the roller brush being located on the side of the mounting base, the roller brush being in contact with the surface of the screen belt, a scraper brush rotatably mounted on the mounting base, the scraper brush being in contact with the roller brush, the scraper brush being rotatably connected to the mounting base via a mounting shaft.

[0006] As a further preferred embodiment of this technical solution, a first sliding rod is fixedly installed inside the mounting bracket, the mounting seat is slidably connected to the mounting bracket via a slider, the slider is slidably sleeved with the first sliding rod, a connecting rod is rotatably installed on the slider, and a crank is rotatably installed on the mounting bracket. The crank is rotatably connected to the end of the connecting rod away from the slider via a rotating shaft.

[0007] As a further preferred embodiment of this technical solution, two sets of symmetrically distributed first springs are sleeved on the first slide rod, and the two ends of the two sets of first springs are respectively fixedly connected to the slider and the mounting bracket.

[0008] As a further preferred embodiment of this technical solution, a gear is sleeved on the mounting shaft, a rack is slidably mounted in the mounting base, the rack is meshed with the gear, a cylinder is fixedly mounted in the mounting base, and the rack is fixedly connected to the output end of the cylinder piston rod.

[0009] As a further preferred embodiment of this technical solution, two sets of symmetrically distributed movable seats are slidably mounted on the mounting base. The two sets of movable seats are respectively arranged corresponding to the scraper brush. The mounting base is provided with two sets of symmetrically distributed lead screws. The two ends of the two sets of lead screws pass through the mounting base and are rotatably connected to the mounting base through rolling bearings. The lead screws pass through the corresponding movable seats and are threadedly connected to the movable seats.

[0010] As a further preferred embodiment of this technical solution, a scraper block is slidably installed inside the movable seat, and the scraper block is slidably sleeved with a corresponding scraper brush. A second slide rod is fixedly installed inside the movable seat, and the scraper block is slidably sleeved with the second slide rod. A cam is rotatably installed on the movable seat, and the cam is fitted with the scraper block.

[0011] As a further preferred embodiment of this technical solution, two sets of symmetrically distributed second springs are sleeved on the second slide rod, and the two ends of the two sets of second springs are respectively fixedly connected to the scraper block and the moving seat.

[0012] This utility model provides a fine particle screening device, which has the following beneficial effects:

[0013] (1) This utility model, by setting a screen belt that can be rolled up and moved in both directions, enables the screen belt to move back and forth or in a directional manner relative to the material, effectively overcoming the problem of high clogging rate of screen holes for ultrafine materials in traditional vibrating screens. The continuous movement of the screen belt fundamentally destroys the conditions for material particles to form bridges or blockages at the screen holes, significantly improving screening efficiency and production capacity. The screen movement replaces high-frequency vibration, greatly reducing the wear of the screen caused by fatigue stress and significantly extending the service life of the screen. The integrated roller brush and scraper brush cleaning system ensures that the roller brush is in close contact with the surface of the moving screen belt, and the scraper brush is in close contact with the roller brush, so that the cleaning action is carried out synchronously during the screening operation, completely avoiding the negative impact of traditional fixed brush or shutdown cleaning methods on the continuity of equipment operation and work efficiency. The movement of the screen belt ensures that its entire working area can be passed through in sequence, the rotation of the roller brush brushes out the fine particles embedded in the screen holes, and the scraper brush promptly removes the material adhering to the roller brush, preventing secondary pollution. It completely solves the problem of limited cleaning range and poor effect of fixed brush.

[0014] (2) In this utility model, the scraper brush is adjusted under the control of cylinder, rack and gear. It works with the moving seat and scraper to effectively clean the side of the scraper brush after use, avoiding the accumulation of impurities on the roller brush, which would reduce the cleaning efficiency of the roller brush and ultimately affect the cleaning effect on the screen belt. At the same time, the scraper can shake under the action of the convex rotation and the second slide rod and the second spring during the movement of the moving seat, which completes the automatic cleaning action of the impurities adhering to the scraper and reduces manual intervention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram showing the structural separation of the mounting bracket and mounting base of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A;

[0018] Figure 4 This is a schematic diagram of the internal structure of the mounting base of this utility model;

[0019] Figure 5 This is a schematic diagram showing the structural separation of the roller brush and scraper brush of this utility model;

[0020] Figure 6 For the present utility model Figure 5 Enlarged view of the structure at point -B;

[0021] In the diagram: 1. Mounting bracket; 2. Mounting base; 3. Cover; 4. Screen belt; 5. Slider; 6. First slide rod; 7. First spring; 8. Connecting rod; 9. Crank; 10. Rewinding rod; 11. Synchronous pulley; 12. Synchronous belt; 13. Roller brush; 14. Scraper brush; 15. Mounting shaft; 16. Gear; 17. Rack; 18. Cylinder; 19. Moving seat; 20. Lead screw; 21. Scraper block; 22. Second slide rod; 23. Second spring; 24. Cam. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figures 1-5As shown, in this embodiment, a fine particle screening device includes a mounting frame 1, a mounting base 2 slidably mounted on the mounting frame 1, two sets of symmetrically distributed winding rods 10 rotatably mounted inside the mounting base 2, a cover 3 fixedly mounted on the mounting base 2, a screen belt 4 provided between the mounting base 2 and the cover 3, the screen belt 4 being slidably engaged with the cover 3, both ends of the screen belt 4 being wound around the two sets of winding rods 10 respectively, and synchronous pulleys 11 being sleeved on both sets of winding rods 10, a synchronous belt 12 provided inside the mounting base 2, the synchronous belt 12 being drivenly connected to the two sets of synchronous pulleys 11 respectively, and a roller brush 13 rotatably mounted on the mounting base 2. The roller brush 13 is located on the side of the mounting base 2 and is fitted to the surface of the screen belt 4. A scraper brush 14 is rotatably mounted on the mounting base 2 and is fitted to the roller brush 13. The scraper brush 14 is rotatably connected to the mounting base 2 via a mounting shaft 15. A first sliding rod 6 is fixedly mounted inside the mounting frame 1. The mounting base 2 is slidably connected to the mounting frame 1 via a slider 5. The slider 5 is slidably sleeved with the first sliding rod 6. A connecting rod 8 is rotatably mounted on the slider 5. A crank 9 is rotatably mounted on the mounting frame 1. The crank 9 is rotatably connected to the end of the connecting rod 8 away from the slider 5 via a rotating shaft. A connecting rod 8 is sleeved on the first sliding rod 6. Two sets of symmetrically distributed first springs 7 are fixedly connected at both ends to the slider 5 and the mounting frame 1, respectively. During the rotation of the crank 9 driven by the motor on the mounting frame 1, the connecting rod 8 causes the slider 5 to drive the upper mounting seat 2 and the screen belt 4 to reciprocate on the mounting frame 1, completing the screening of materials. Under the action of the first sliding rod 6 and the first springs 7, the mounting seat 2 slides smoothly. Simultaneously, the motor inside the mounting seat 2 drives the winding rod 10 to rotate. With the cooperation of the synchronous belt 12 and the synchronous pulley 11, the synchronous rotation of the two sets of winding rods 10 can be achieved, thus enabling the transmission of the screen belt 4 on the mounting seat 2. The mounting frame 1... Presenting a certain tilt angle, the screen belt 4 does not affect the screening of materials during its leftward transmission. Furthermore, the tilt direction of the mounting frame 1 is opposite to the transmission direction of the screen belt 4, which to a certain extent enhances the screening force of materials. During the transmission of the screen belt 4, the motor on the starting mounting base 2 drives the roller brush 13 to rotate in the opposite direction to the transmission direction of the screen belt 4, clearing the materials blocked on the screen belt 4. During the rotation of the roller brush 13, it scrapes against the scraper brush 14, thus cleaning the materials attached to the roller brush 13 and avoiding secondary pollution of the screen belt 4 caused by impurities during the cyclic rotation of the roller brush 13.

[0024] like Figure 5 and Figure 6As shown, a gear 16 is sleeved on the mounting shaft 15. A rack 17 is slidably mounted inside the mounting base 2, meshing with the gear 16. A cylinder 18 is fixedly mounted inside the mounting base 2, with the rack 17 fixedly connected to the output end of the piston rod of the cylinder 18. Two sets of symmetrically distributed movable seats 19 are slidably mounted on the mounting base 2, each corresponding to a scraper brush 14. Two sets of symmetrically distributed lead screws 20 are provided inside the mounting base 2, with both ends of the lead screws 2 passing through the mounting base 2 and rotatably connected to it via rolling bearings. The lead screws 20 pass through their corresponding movable seats 19 and are threadedly connected to them. A scraper block 21 is slidably mounted inside the movable seat 19, slidingly engaging with the corresponding scraper brush 14. A second sliding rod 22 is fixedly mounted inside the movable seat 19. The scraper 21 is slidably sleeved with the second slide rod 22. A cam 24 is rotatably mounted on the movable seat 19, and the cam 24 is fitted with the scraper 21. Two sets of symmetrically distributed second springs 23 are sleeved on the second slide rod 22. The two ends of the two sets of second springs 23 are fixedly connected to the scraper 21 and the movable seat 19, respectively. After one side of the scraper brush 14 has been used for a period of time, the cylinder 18 in the mounting seat 2 starts and drives the rack 17 to slide. The gear 16 meshing with the rack 17 causes the mounting shaft 15 to drive the scraper brush 14 to rotate. The used side and the movable seat 19 are then rotated. The mounting base 19 is correspondingly set up. During the rotation of the lead screw 20 driven by the motor in the mounting base 2, the moving base 19 moves the scraper block 21 under the limiting action of the mounting base 2. The scraper block 21 cleans the impurities attached to the scraper brush 14. At the same time, the motor in the moving base 19 drives the cam 24 to rotate. The cam 24 pushes the scraper block 21 that is in contact with it to slide in the moving base 19. Under the action of the second slide rod 22 and the second spring 23, the scraper block 21 shakes left and right in the moving base 19, shaking off the impurities cleaned from the scraper brush 14 and preventing accumulation.

[0025] This utility model provides a fine particle screening device. The specific working principle is as follows: During the rotation of the crank 9 driven by the motor on the mounting frame 1, the connecting rod 8 causes the slider 5 to drive the upper mounting seat 2 and the screen belt 4 to reciprocate on the mounting frame 1, completing the screening of materials. Under the action of the first sliding rod 6 and the first spring 7, the mounting seat 2 slides smoothly. Simultaneously, the motor inside the mounting seat 2 drives the winding rod 10 to rotate. With the cooperation of the synchronous belt 12 and synchronous pulley 11, the synchronous rotation of the two sets of winding rods 10 is achieved, thus transmitting the screen belt 4 on the mounting seat 2. The mounting frame 1 is tilted at a certain angle. The leftward transmission of the screen belt 4 does not affect the screening of materials. Furthermore, the tilt direction of the mounting frame 1 is opposite to the transmission direction of the screen belt 4, which to some extent strengthens the screening force of the materials. During the transmission of the screen belt 4, the motor on the mounting seat 2 is activated, driving the roller brush 13 to rotate in the opposite direction to the transmission direction of the screen belt 4, clearing the material clogging the screen belt 4. During the rotation, the scraper brush 14 scrapes against the roller brush 13, cleaning the material attached to the roller brush 13 and preventing secondary pollution of the screen belt 4 by impurities during the cyclic rotation of the roller brush 13. After one side of the scraper brush 14 has been used for a period of time, the cylinder 18 in the mounting base 2 starts and drives the rack 17 to slide. The gear 16 meshes with it, causing the mounting shaft 15 to rotate the scraper brush 14. The used side is set with the moving base 19. During the rotation of the screw 20 driven by the motor in the mounting base 2, the moving base 19 drives the scraper block 21 to slide under the limiting action of the mounting base 2. The scraper block 21 cleans the impurities attached to the scraper brush 14. At the same time, the motor in the moving base 19 drives the cam 24 to rotate. The cam 24 pushes the scraper block 21 that is in contact with it to slide in the moving base 19. Under the action of the second slide rod 22 and the second spring 23, the scraper block 21 shakes left and right in the moving base 19, shaking off the impurities cleaned from the scraper brush 14 and preventing accumulation.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fine particle size screening device, comprising a mounting frame (1), characterized in that: A mounting base (2) is slidably mounted above the mounting frame (1). Two sets of symmetrically distributed winding rods (10) are rotatably mounted inside the mounting base (2). A cover (3) is fixedly mounted above the mounting base (2). A screen belt (4) is provided between the mounting base (2) and the cover (3). The screen belt (4) is slidably engaged with the cover (3). The two ends of the screen belt (4) are respectively wound around the two sets of winding rods (10). Synchronous pulleys (11) are sleeved on both sets of winding rods (10). Inside the mounting base (2) A synchronous belt (12) is provided, which is connected to two sets of synchronous pulleys (11) respectively. A roller brush (13) is rotatably mounted on the mounting base (2). The roller brush (13) is located on the side of the mounting base (2). The roller brush (13) is attached to the surface of the screen belt (4). A scraper brush (14) is rotatably mounted on the mounting base (2). The scraper brush (14) is attached to the roller brush (13). The scraper brush (14) is rotatably connected to the mounting base (2) through the mounting shaft (15).

2. The fine particle size screening device according to claim 1, characterized in that: The mounting bracket (1) is fixedly installed with a first sliding rod (6). The mounting base (2) is slidably connected to the mounting bracket (1) through a slider (5). The slider (5) is slidably sleeved with the first sliding rod (6). A connecting rod (8) is rotatably installed on the slider (5). A crank (9) is rotatably installed on the mounting bracket (1). The crank (9) is rotatably connected to the end of the connecting rod (8) away from the slider (5) through a rotating shaft.

3. The fine particle size screening device according to claim 2, characterized in that: Two sets of symmetrically distributed first springs (7) are sleeved on the first slide rod (6), and the two ends of the two sets of first springs (7) are fixedly connected to the slider (5) and the mounting bracket (1) respectively.

4. The fine particle size screening device according to claim 1, characterized in that: A gear (16) is sleeved on the mounting shaft (15), and a rack (17) is slidably installed in the mounting seat (2). The rack (17) meshes with the gear (16), and a cylinder (18) is fixedly installed in the mounting seat (2). The rack (17) is fixedly connected to the output end of the piston rod of the cylinder (18).

5. The fine particle size screening device according to claim 1, characterized in that: Two sets of symmetrically distributed movable seats (19) are slidably installed on the mounting base (2). The two sets of movable seats (19) are respectively set with the scraper brush (14). The mounting base (2) is provided with two sets of symmetrically distributed lead screws (20). The two ends of the two sets of lead screws (20) pass through the mounting base (2) and are rotatably connected to the mounting base (2) through rolling bearings. The lead screws (20) pass through the corresponding movable seats (19) and are threadedly connected to the movable seats (19).

6. The fine particle size screening device according to claim 5, characterized in that: A scraper block (21) is slidably installed inside the movable seat (19). The scraper block (21) is slidably sleeved with the corresponding scraper brush (14). A second slide rod (22) is fixedly installed inside the movable seat (19). The scraper block (21) is slidably sleeved with the second slide rod (22). A cam (24) is rotatably installed on the movable seat (19). The cam (24) is fitted with the scraper block (21).

7. A fine particle size screening device according to claim 6, characterized in that: Two sets of symmetrically distributed second springs (23) are sleeved on the second slide rod (22), and the two ends of the two sets of second springs (23) are fixedly connected to the scraper (21) and the moving seat (19) respectively.

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