A Chinese medicine particle crushing and screening device and processing method thereof

Abstract

The invention discloses a Chinese medicine particle crushing and screening device and a processing method thereof, comprising a processing table and a base, a supporting frame is arranged between the processing table and the base, a material dropout port is arranged on the processing table, a crushing box is arranged above the material dropout port, a crushing hammer roller is arranged inside the crushing box, a reduction motor is arranged on one side of the crushing box, a connecting shaft is arranged between the reduction motor and the crushing hammer roller, a material receiving box is arranged above the base, a second screening frame is arranged above the material receiving box, a first screening frame is arranged above the second screening frame, and screens are arranged inside the lower ends of the first screening frame and the second screening frame. The screening structure of the crushing and screening device is composed of two screening frames stacked and assembled, and more screening frames can be assembled according to screening requirements, and the Chinese medicine can be classified and screened according to the size of the crushed Chinese medicine, so as to realize rapid classification and collection of the Chinese medicine and improve the crushing and screening effect of the Chinese medicine particles.

Description

Technical Field

[0001] The invention relates to the technical field of crushing and screening of traditional Chinese medicine particles, in particular to a crushing and screening device for traditional Chinese medicine particles and a processing method thereof. Background Art

[0002] Chinese medicine granule processing refers to a series of activities involved in processing Chinese herbal medicines into granules and pills. Chinese medicine granules refer to the raw materials of Chinese herbal medicine slices, which are extracted, concentrated, separated and dried by modern pharmaceutical technology. The Chinese medicine granule processing process requires the Chinese medicine to be crushed and refined, and then screened by a screening device to facilitate the subsequent fine processing of the medicine.

[0003] The Chinese patent publication number is CN215964046U, and the authorization announcement date is March 8, 2022. A Chinese herbal medicine crushing and screening device includes: a body, a blower is provided at the bottom end of the body, a crushing bin is provided on the right side of the blower, an adsorption mechanism is provided on the right side of the crushing bin, the outer surface of the adsorption mechanism is connected to the grinding bin, and the right outer surface of the grinding bin is fixedly installed with a working mechanism. In the utility model, the working motor, connecting belt, screening net and storage plate are provided so that after the Chinese herbal medicine is crushed, the rotating teeth can be controlled to rotate through the work of the working motor, and then the rack plate is telescopically adjusted after the engagement of the rotating teeth, so that the screening mechanism is vibrated and screened. The first screening bin and the second screening bin are provided to collect and screen Chinese herbal medicine powders of different sizes, which is convenient for subsequent processing operations.

[0004] The crushing effect of the existing crushing device is not ideal, the adjustability is poor, the screening structure is relatively simple, and the crushed Chinese medicine particles cannot be classified and screened, making it impossible to quickly classify and use the screened Chinese medicine. The crushed materials need to be screened again later, which reduces the crushing and screening efficiency and cannot meet the use requirements. Summary of the invention

[0005] The purpose of the present invention is to provide a Chinese medicine particle crushing and screening device and a processing method thereof, so as to solve the problem proposed in the above background technology that the existing crushing device has an unsatisfactory crushing effect, poor adjustability, a relatively simple screening structure, and cannot classify and screen the crushed Chinese medicine particles, making it impossible to quickly classify and use the screened Chinese medicine, and the crushed material needs to be screened again later, which reduces the crushing and screening efficiency and cannot meet the use requirements.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a Chinese medicine particle crushing and screening device and a processing method thereof, comprising a processing table and a base, a support frame is arranged between the processing table and the base, and the support frame is fixedly connected to the processing table and the base, a material drop opening is arranged on the processing table, a crushing box is arranged above the material drop opening, and the crushing box is connected to the processing table by screws, a crushing hammer roller is arranged inside the crushing box, and the crushing hammer roller is rotatably connected to the crushing box, a reduction motor is arranged on one side of the crushing box, and the reduction motor is connected to the processing table by screws, a connecting shaft is arranged between the reduction motor and the crushing hammer roller, and the two ends of the connecting shaft are respectively connected to the output end of the reduction motor and one end of the crushing hammer roller, a material receiving box is arranged above the base, a second screening frame is arranged above the material receiving box, a first screening frame is arranged above the second screening frame, and the first screening frame is arranged below the material drop opening, and a screen is arranged inside the lower ends of the first screening frame and the second screening frame, and the screen is fixedly connected to the first screening frame and the second screening frame.

[0007] Preferably, the crushing box is provided with crushing teeth inside, at least six crushing teeth are provided, and the crushing teeth are fixedly connected to the crushing box, and the crushing teeth are meshed and connected at equal distances on both sides of the crushing hammer roller.

[0008] Preferably, the screen aperture on the first screening frame is larger than the screen aperture on the second screening frame, the lower ends of the four corners of the first screening frame are provided with connecting holes, and there are four connecting holes, the upper ends of the four corners of the second screening frame are provided with connecting columns, and there are four connecting columns, and one end of the connecting column is fixedly connected to the second screening frame, the connecting column and the connecting hole are arranged correspondingly, and the connecting column is plugged into the first screening frame, an electric push rod is provided on one side of the first screening frame, and the electric push rod is fixedly connected to the support frame and the first screening frame.

[0009] Preferably, a connecting frame is provided on the inner side of the support frame, two connecting frames are provided, and the two connecting frames are provided on both sides of the first screening frame, the connecting frame is fixedly connected to the support frame, connecting strips are provided on both sides of the first screening frame, two connecting strips are provided, and the connecting strips are fixedly connected to the first screening frame, and the connecting strips are slidably connected to the connecting frame.

[0010] Preferably, a rolling groove is provided at the upper end of the material receiving box, and two rolling grooves are provided. A ball is provided at the lower end of the second screening frame, and one end of the ball extends to the inside of the rolling groove, and the ball is rollingly connected to the material receiving box and the second screening frame.

[0011] Preferably, a feeding box is provided above the crushing box, and the feeding box is fixedly connected to the crushing box, a guide groove is provided at the upper end of the feeding box, a baffle is provided inside the feeding box, two baffles are provided, and the baffle is provided at the lower end of the guide groove, an elastic hinge is provided between the two baffles and the feeding box, and the baffle and the feeding box are rotatably connected through the elastic hinge, a visual window is provided on one side of the feeding box, and the visual window and the feeding box are integrated.

[0012] Preferably, an exhaust fan and a dust collecting box are provided on the other side of the crushing box, and the exhaust fan and the dust collecting box are connected to the processing table by screws, a dust collecting plate is provided at the lower end of the inner side of the crushing box, and the dust collecting plate is connected to the crushing box as a whole, a connecting pipe is provided between the dust collecting box and the exhaust fan and the dust collecting plate, and the exhaust fan, the dust collecting box and the dust collecting plate are connected by the connecting pipe.

[0013] A processing method of a Chinese medicine particle crushing and screening device comprises the following steps:

[0014] Step 1: Add the Chinese medicine particles from the guide groove into the feeding box, and then drop them onto the top of the crushing hammer roller;

[0015] Step 2: Turn on the reduction motor to drive the crushing hammer roller to rotate, and squeeze the Chinese medicine particles through the rotating crushing hammer roller to crush the Chinese medicine particles;

[0016] Step 3: When crushing, turn on the exhaust fan to generate suction, and under the action of the suction force, the dust in the crushing box is sucked into the dust collecting box through the dust suction plate and the connecting pipe for collection;

[0017] Step 4: The crushed Chinese medicine particles first fall onto the first screening frame for screening, and the crushed materials after preliminary screening fall onto the second screening frame for screening again. The crushed materials fall into the collecting box for collection, and the electric push rod is driven to drive the first screening frame and the second screening frame to move back and forth together, so that the crushed materials on the screen shake and speed up the screening;

[0018] Step 5: After the screening is completed, the first screening frame and the second screening frame are disassembled, and the broken materials falling in the first screening frame and the second screening frame are cleaned up and crushed again.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The device of the invention is provided with a crushing box, a reduction motor, a connecting shaft, a crushing hammer roller and crushing teeth. The reduction motor drives the connecting shaft to rotate, and the crushing hammer roller is driven to rotate with the rotation of the connecting shaft. The Chinese medicine particles are squeezed by the rotating crushing hammer roller, and the Chinese medicine particles are crushed and crushed by the crushing teeth.

[0021] 2. The device of the invention is provided with a material receiving box, a connecting frame, a first screening frame, a second screening frame, a screen, an electric push rod, a connecting bar, a ball, a connecting hole and a connecting column. The crushed Chinese medicine particles first fall on the first screening frame for screening, and the crushed materials after preliminary screening fall on the second screening frame for screening again. The crushed materials fall into the material receiving box for collection, and the electric push rod drives the first screening frame and the second screening frame to move back and forth together, so that the crushed materials on the screen shake and the screening is accelerated. The connecting bar is slidably connected with the connecting frame, which plays a guiding and limiting role for the reciprocating screening structure. The ball plays a supporting role for the screening structure, and can also reduce the moving resistance of the screening structure and improve the reciprocating stability of the screening structure. The connecting column is aligned with the connecting hole and inserted, and the second screening frame is assembled with the first screening frame quickly and accurately, which is convenient for the subsequent disassembly and cleaning of the first screening frame and the second screening frame.

[0022] 3. The device of the invention is provided with a feeding box, a baffle and an elastic hinge. The inside of the feeding box can store Chinese medicine particles in advance. A lot of Chinese medicine particles can be added at one time during crushing, and there is no need to add Chinese medicine particles frequently manually. The baffle is rotatably connected to the feeding box through an elastic hinge. The baffle automatically closes after the filling is completed, which can prevent the Chinese medicine particles from splashing out during the crushing process and can also play a dust-proof role.

[0023] 4. The device of the invention is provided with an exhaust fan, a dust collecting box, a connecting pipe and a dust collecting plate. The exhaust fan generates suction, and under the action of the suction force, the dust in the crushing box is sucked into the dust collecting box through the dust collecting plate and the connecting pipe for collection, so as to prevent the dust from floating out and being inhaled by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a structural diagram of the connection between the crushing hammer roller and the crushing box of the present invention;

[0026] Figure 3 For the present invention Figure 1 A partial enlarged view of area A;

[0027] Figure 4 It is a cross-sectional view of a charging box of the present invention;

[0028] Figure 5 It is a connection relationship diagram of the second screening frame, the material receiving box and the first screening frame of the present invention;

[0029] Figure 6 This is a bottom view of the first screening frame of the present invention;

[0030] Figure 7 This is a top view of the structure of the second screening frame of the present invention.

[0031] In the figure: 1. Processing table; 2. Base; 3. Support frame; 4. Crushing box; 5. Reducer motor; 6. Connecting shaft; 7. Feeding box; 8. Guide groove; 9. Visual window; 10. Baffle; 11. Collecting box; 12. Connecting frame; 13. Exhaust fan; 14. Dust collecting box; 15. Connecting pipe; 16. Dust collecting plate; 17. Dropping port; 18. Crushing hammer roller; 19. Crushing teeth; 20. First screening frame; 21. Second screening frame; 22. Screen; 23. Electric push rod; 24. Connecting strip; 25. Ball; 26. Rolling groove; 27. Connecting hole; 28. Connecting column; 29. ​​Elastic hinge. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] See also Figure 1-7 , an embodiment of the present invention: a Chinese medicine particle crushing and screening device and a processing method thereof, comprising a processing table 1 and a base 2, a support frame 3 is arranged between the processing table 1 and the base 2, and the support frame 3 is fixedly connected to the processing table 1 and the base 2, a material drop opening 17 is arranged on the processing table 1, a crushing box 4 is arranged above the material drop opening 17, and the crushing box 4 is connected to the processing table 1 by screws, a crushing hammer roller 18 is arranged inside the crushing box 4, and the crushing hammer roller 18 is rotatably connected to the crushing box 4, a reduction motor 5 is arranged on one side of the crushing box 4, and the reduction motor 5 is connected to the processing table 1 by screws, a connecting shaft 6 is arranged between the reduction motor 5 and the crushing hammer roller 18, and the connecting shaft 6 The two ends are respectively connected to the output end of the reduction motor 5 and one end of the crushing hammer roller 18. A material receiving box 11 is arranged above the base 2, and a second screening frame 21 is arranged above the material receiving box 11. A first screening frame 20 is arranged above the second screening frame 21, and the first screening frame 20 is arranged below the drop port 17. Screens 22 are arranged inside the lower ends of the first screening frame 20 and the second screening frame 21, and the screen 22 is fixedly connected to the first screening frame 20 and the second screening frame 21. Crushing teeth 19 are arranged inside the crushing box 4, and at least six crushing teeth 19 are arranged, and the crushing teeth 19 are fixedly connected to the crushing box 4. The crushing teeth 19 are equidistantly meshed and connected on both sides of the crushing hammer roller 18.

[0034] During use: add the Chinese medicine particles into the crushing box 4, turn on the reduction motor 5 to drive the connecting shaft 6 to rotate, and the crushing hammer roller 18 is driven to rotate as the connecting shaft 6 rotates. The Chinese medicine particles are squeezed by the rotating crushing hammer roller 18, and the Chinese medicine particles are crushed and broken by the crushing teeth 19. The crushed Chinese medicine particles first fall onto the first screening frame 20 for screening, and the crushed materials after preliminary screening fall onto the second screening frame 21 for screening again. The completely crushed crushed materials fall into the receiving box 11 for collection.

[0035] See also Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 7 , the aperture of the screen 22 on the first screening frame 20 is larger than the aperture of the screen 22 on the second screening frame 21, the lower ends of the four corners of the first screening frame 20 are provided with connecting holes 27, and there are four connecting holes 27, and the upper ends of the four corners of the second screening frame 21 are provided with connecting columns 28, and there are four connecting columns 28, and one end of the connecting column 28 is fixedly connected to the second screening frame 21, and the connecting column 28 is arranged corresponding to the connecting hole 27, and the connecting column 28 is plugged into the first screening frame 20, and an electric push rod 23 is arranged on one side of the first screening frame 20, and the electric push rod 23 is fixedly connected to the support frame 3 and the first screening frame 20, and a connecting frame 12 is arranged on the inner side of the support frame 3, and there are two connecting frames 12, and the two connecting frames 12 are arranged on both sides of the first screening frame 20, and the connecting frame 12 is fixedly connected to the support frame 3, and connecting strips 24 are arranged on both sides of the first screening frame 20, and there are two connecting strips 24, and the connecting strips 24 are arranged. It is fixedly connected to the first screening frame 20, and the connecting strip 24 is slidably connected to the connecting frame 12. A rolling groove 26 is provided at the upper end of the material receiving box 11, and two rolling grooves 26 are provided. A ball 25 is provided at the lower end of the second screening frame 21, and one end of the ball 25 extends to the inside of the rolling groove 26, and the ball 25 is rollingly connected to the material receiving box 11 and the second screening frame 21. The connecting column 28 is aligned with the connecting hole 27 and inserted, and the second screening frame 21 is assembled with the first screening frame 20 quickly and accurately, which is convenient for the subsequent disassembly and cleaning of the first screening frame 20 and the second screening frame 21. The electric push rod 23 drives the first screening frame 20 and the second screening frame 21 to reciprocate together, so that the crushed materials on the screen 22 shake and speed up the screening. The connecting strip 24 is slidably connected to the connecting frame 12, which plays a guiding and limiting role in the reciprocating screening structure. The ball 25 supports the screening structure, and can also reduce the moving resistance of the screening structure and improve the reciprocating stability of the screening structure.

[0036] See also Figure 1 , Figure 2 and Figure 4A feeding box 7 is arranged above the crushing box 4, and the feeding box 7 is fixedly connected to the crushing box 4, a guide groove 8 is arranged at the upper end of the feeding box 7, a baffle 10 is arranged inside the feeding box 7, two baffles 10 are arranged, and the baffle 10 is arranged at the lower end of the guide groove 8, an elastic hinge 29 is arranged between the two baffles 10 and the feeding box 7, and the baffle 10 and the feeding box 7 are rotatably connected through the elastic hinge 29, a visual window 9 is arranged on one side of the feeding box 7, and the visual window 9 and the feeding box 7 are arranged as one body, an exhaust fan 13 and a dust collecting box 14 are arranged on the other side of the crushing box 4, and the exhaust fan 13 and the dust collecting box 14 are connected to the processing table 1 by screws, and a baffle 10 is arranged at the lower end of the inner side of the crushing box 4 A dust collecting plate 16 is provided, and the dust collecting plate 16 is connected to the crushing box 4 as a whole. A connecting pipe 15 is provided between the dust collecting box 14, the exhaust fan 13 and the dust collecting plate 16, and the exhaust fan 13, the dust collecting box 14 and the dust collecting plate 16 are connected through the connecting pipe 15. The interior of the feeding box 7 can pre-store Chinese medicine particles. A lot of Chinese medicine particles can be added at one time during crushing, and there is no need to add Chinese medicine particles frequently manually. The baffle 10 automatically closes after the filling is completed, which can avoid the splashing of Chinese medicine particles during the crushing process and can also play a dust-proof role. When crushing, the exhaust fan 13 is turned on to generate suction, and the dust in the crushing box 4 is extracted into the dust collecting box 14 under the action of the suction force for collection, so as to avoid the dust from floating out and being inhaled by the staff.

[0037] A processing method of a Chinese medicine particle crushing and screening device comprises the following steps:

[0038] Step 1: Add the Chinese medicine particles from the guide groove 8 into the feeding box 7, and then drop them onto the top of the crushing hammer roller 18;

[0039] Step 2: Turn on the reduction motor 5 to drive the crushing hammer roller 18 to rotate, and squeeze the Chinese medicine particles through the rotating crushing hammer roller 18 to crush the Chinese medicine particles;

[0040] Step 3: When crushing, the exhaust fan 13 is turned on to generate suction, and the dust in the crushing box 4 is sucked into the dust collecting box 14 through the dust collecting plate 16 and the connecting pipe 15 under the action of the suction force;

[0041] Step 4: The crushed Chinese medicine particles first fall onto the first screening frame 20 for screening, and the crushed materials after preliminary screening fall onto the second screening frame 21 for screening again. The crushed materials fall into the material receiving box 11 for collection, and the electric push rod 23 is driven to drive the first screening frame 20 and the second screening frame 21 to move back and forth together, so that the crushed materials on the screen 22 shake and speed up the screening;

[0042] Step 5: After the screening is completed, the first screening frame 20 and the second screening frame 21 are disassembled, and the crushed materials falling in the first screening frame 20 and the second screening frame 21 are cleaned up and crushed again.

[0043] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A Chinese medicine particle crushing and screening device and a processing method thereof, comprising a processing table (1) and a base (2), characterized in that: A support frame (3) is provided between the processing table (1) and the base (2), and the support frame (3) is fixedly connected to the processing table (1) and the base (2); a material drop opening (17) is provided on the processing table (1), a crushing box (4) is provided above the material drop opening (17), and the crushing box (4) is connected to the processing table (1) by screws; a crushing hammer roller (18) is provided inside the crushing box (4), and the crushing hammer roller (18) is rotatably connected to the crushing box (4); a reduction motor (5) is provided on one side of the crushing box (4), and the reduction motor (5) is connected to the processing table (1) by screws, and the reduction motor (5) is connected to the crushing hammer roller (18) by screws. 8), and the two ends of the connecting shaft (6) are respectively connected to the output end of the reduction motor (5) and one end of the crushing hammer roller (18); a material receiving box (11) is arranged above the base (2); a second screening frame (21) is arranged above the material receiving box (11); a first screening frame (20) is arranged above the second screening frame (21); and the first screening frame (20) is arranged below the drop opening (17); a screen (22) is arranged inside the lower ends of the first screening frame (20) and the second screening frame (21), and the screen (22) is fixedly connected to the first screening frame (20) and the second screening frame (21).

2. A Chinese medicine particle crushing and screening device and a processing method thereof according to claim 1, characterized in that: The crushing box (4) is provided with crushing teeth (19) inside, at least six crushing teeth (19) are provided, and the crushing teeth (19) are fixedly connected to the crushing box (4), and the crushing teeth (19) are equidistantly meshed and connected on both sides of the crushing hammer roller (18).

3. A Chinese medicine particle crushing and screening device and a processing method thereof according to claim 2, characterized in that: The aperture of the screen (22) on the first screening frame (20) is larger than the aperture of the screen (22) on the second screening frame (21); the lower ends of the four corners of the first screening frame (20) are provided with connecting holes (27), and there are four connecting holes (27); the upper ends of the four corners of the second screening frame (21) are provided with connecting columns (28), and there are four connecting columns (28), and one end of the connecting column (28) is fixedly connected to the second screening frame (21); the connecting column (28) and the connecting hole (27) are arranged correspondingly, and the connecting column (28) is plugged into the first screening frame (20); an electric push rod (23) is provided on one side of the first screening frame (20), and the electric push rod (23) is fixedly connected to the support frame (3) and the first screening frame (20).

4. A Chinese medicine particle crushing and screening device and a processing method thereof according to claim 3, characterized in that: A connecting frame (12) is arranged on the inner side of the support frame (3), two connecting frames (12) are arranged, and the two connecting frames (12) are arranged on both sides of the first screening frame (20), the connecting frame (12) is fixedly connected to the support frame (3), and connecting bars (24) are arranged on both sides of the first screening frame (20), two connecting bars (24) are arranged, and the connecting bars (24) are fixedly connected to the first screening frame (20), and the connecting bars (24) are slidably connected to the connecting frame (12).

5. A Chinese medicine particle crushing and screening device and a processing method thereof according to claim 4, characterized in that: The upper end of the material receiving box (11) is provided with a rolling groove (26), and two rolling grooves (26) are provided. The lower end of the second screening frame (21) is provided with a ball (25), and one end of the ball (25) extends to the inside of the rolling groove (26), and the ball (25) is rollingly connected to the material receiving box (11) and the second screening frame (21).

6. A Chinese medicine particle crushing and screening device and a processing method thereof according to claim 5, characterized in that: A feeding box (7) is arranged above the crushing box (4), and the feeding box (7) is fixedly connected to the crushing box (4); a guide groove (8) is arranged at the upper end of the feeding box (7); a baffle (10) is arranged inside the feeding box (7); two baffles (10) are arranged, and the baffles (10) are arranged at the lower end of the guide groove (8); an elastic hinge (29) is arranged between the two baffles (10) and the feeding box (7), and the baffle (10) and the feeding box (7) are rotatably connected through the elastic hinge (29); a visual window (9) is arranged on one side of the feeding box (7), and the visual window (9) and the feeding box (7) are arranged as a whole.

7. A Chinese medicine particle crushing and screening device and a processing method thereof according to claim 6, characterized in that: An exhaust fan (13) and a dust collecting box (14) are arranged on the other side of the crushing box (4), and the exhaust fan (13) and the dust collecting box (14) are connected to the processing table (1) by screws. A dust collecting plate (16) is arranged at the lower end of the inner side of the crushing box (4), and the dust collecting plate (16) is connected to the crushing box (4) as a whole. A connecting pipe (15) is arranged between the dust collecting box (14), the exhaust fan (13) and the dust collecting plate (16), and the exhaust fan (13), the dust collecting box (14) and the dust collecting plate (16) are connected to each other by the connecting pipe (15).

8. The processing method of a Chinese medicine particle crushing and screening device according to claim 7, characterized in that: The steps include: Step 1: Add the Chinese medicine particles from the guide groove (8) into the feeding box (7), and then drop them onto the top of the crushing hammer roller (18); Step 2: Turn on the reduction motor (5) to drive the crushing hammer roller (18) to rotate, and squeeze the Chinese medicine particles through the rotating crushing hammer roller (18) to crush the Chinese medicine particles; Step 3: during crushing, the exhaust fan (13) is turned on to generate suction, and the dust in the crushing box (4) is sucked into the dust collecting box (14) through the dust suction plate (16) and the connecting pipe (15) for collection; Step 4: The crushed Chinese medicine particles first fall onto the first screening frame (20) for screening, and the crushed materials after preliminary screening fall onto the second screening frame (21) for screening again. The crushed materials that are completely crushed fall into the material receiving box (11) for collection, and the electric push rod (23) is driven to drive the first screening frame (20) and the second screening frame (21) to move back and forth together, so that the crushed materials on the screen (22) shake, thereby accelerating the screening; Step 5: After the screening is completed, the first screening frame (20) and the second screening frame (21) are disassembled, and the crushed materials falling in the first screening frame (20) and the second screening frame (21) are cleaned up and crushed again.

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