A kind of additive screening and filtering device for feed processing
By designing an additive screening and filtering device including a rotatable screening disk and a ring, and using the cooperation of helical gears and crushing rods, the problem in the existing technology of being unable to effectively screen powder and quickly break larger particles is solved, achieving A more efficient screening and crushing effect.
Patent Information
- Application Number
- CN202411570392.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2044-11-06
AI Technical Summary
Existing additive screening and filtration devices cannot effectively siev the powder and quickly crush the additives of larger particles.
An additive screening and filtering device for feed processing is designed. It uses a rotatable screening disk and a ring to achieve preliminary crushing and better screening of larger particles through the cooperation of helical gears and crushing rods.
The rapid sieving and crushing of the additives are achieved, the siege efficiency and effect are improved, and the additive particles of different sizes can be better handled.
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Figure CN119056562B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of feed processing, and in particular to an additive screening and filtering device for feed processing. Background Art
[0002] Additives are one of the ingredients required in feed processing. In the production process, it is necessary to first use an additive screening and filtering device to screen out additive particles of the required size. The existing additive screening and filtering device is composed of two or more inclined filter screens, which cannot perform powder screening well, and also cannot quickly crush larger particles of additives (intercepted by the screen). Therefore, we propose an additive screening and filtering device for feed processing to solve the above problems. Summary of the invention
[0003] The purpose of the present invention is to solve the problems raised in the background technology and to provide a screening and filtering device for additives used in feed processing.
[0004] In order to achieve the above object, the present invention adopts the following technical solutions:
[0005] A feed processing additive screening and filtering device comprises a screening cylinder mounted on a support frame, the screening cylinder is fixedly connected with a feed pipe and a discharge pipe, a ring is rotatably mounted in the screening cylinder through a rotating component 1, and a screening disc is rotatably mounted in the ring through a rotating component 2;
[0006] A motor is fixedly mounted on the screening cylinder, a rotating rod is fixedly mounted on the driving end of the motor, and the lower end of the rotating rod rotates and penetrates the screening cylinder, and the rotating rod and the screening disc are fixedly penetrated;
[0007] A matching rotating structure is installed between the screening disc and the ring;
[0008] A preliminary crushing structure matched with the screening disc is installed between the ring and the rotating rod;
[0009] An air cylinder is fixedly installed in the screening cylinder through a plurality of short rods, the lower end of the rotating rod rotates through the air cylinder, the part of the rotating rod located in the air cylinder is provided with a bidirectional thread, the part of the rotating rod located in the air cylinder is threadedly installed with a sealing disk, and the sealing disk is sealingly slidably installed in the air cylinder, and the air cylinder is fixedly connected with a pipe body 1, a pipe body 2 and two air supply pipes;
[0010] A shaft three is rotatably installed in the screening cylinder, and a transmission component is installed between the rotating rod and the shaft three. A breaking structure and a secondary crushing structure are installed on the shaft three.
[0011] An arc-shaped screening seat is fixedly installed in the screening cylinder.
[0012] In the above-mentioned feed processing additive screening and filtering device, the support frame includes a column and a base, a plurality of columns are symmetrically fixedly mounted on the lower surface of the screening cylinder, and a base is commonly fixedly mounted on the lower ends of the plurality of columns.
[0013] In the above-mentioned additive screening and filtering device for feed processing, the rotating component includes an annular groove and an annular seat. The inner wall of the screening cylinder is provided with an annular groove, and the outer wall of the circular ring is fixedly provided with an annular seat matching the annular groove.
[0014] In the above-mentioned additive screening and filtering device for feed processing, the mating rotating structure includes a fixed block, a shaft, a gear, an outer gear ring, and an inner gear ring. A fixed block is fixedly installed in the screening cylinder, a shaft is rotatably installed on the fixed block, a gear is rotatably installed on the shaft, an inner gear ring is fixedly installed on the lower surface of the circular ring, an outer gear ring is fixedly installed on the lower surface of the screening disc, and the gear is meshed with the outer gear ring and the inner gear ring at the same time.
[0015] In the above-mentioned feed processing additive screening and filtering device, a plurality of inclined blocks are fixedly mounted at equal intervals on the upper surface of the circular ring.
[0016] In the above-mentioned additive screening and filtering device for feed processing, the preliminary crushing structure includes a fixed block 2, a shaft 2, a rotating cylinder, a crushing rod, a bevel gear 1, and a bevel gear 2. The screening disc is fixedly mounted with a fixed block 2, the fixed block 2 is rotatably mounted with a shaft 2, the shaft 2 is fixedly mounted with a rotating cylinder and a bevel gear 1, a plurality of crushing rods are fixedly mounted at equal intervals on the outside of the rotating cylinder, and the rotating rod is fixedly mounted with a bevel gear 2 meshing with the bevel gear 1.
[0017] In the above-mentioned additive screening and filtering device for feed processing, the transmission component includes bevel gear three and bevel gear four, the rotating rod is fixedly mounted with bevel gear three, and the shaft three is fixedly mounted with bevel gear four meshing with bevel gear three.
[0018] In the above-mentioned additive screening and filtering device for feed processing, the secondary crushing structure includes short blocks and a crushing seat. A plurality of short blocks are fixedly mounted on the third shaft, and a corresponding plurality of short blocks are commonly fixedly mounted on a crushing seat, and the crushing seat is eccentrically arranged relative to the third shaft. There are two crushing seats, which are respectively located on both sides of the transmission member.
[0019] In the above-mentioned additive screening and filtering device for feed processing, the dispersing structure includes a dispersing seat, two dispersing seats are fixedly installed on the third axis, and the transmission component is located in the middle position of the dispersing seat, and both of the dispersing seats are provided with inclined dispersion grooves.
[0020] In the above-mentioned additive screening and filtering device for feed processing, the rotating component 2 includes an annular groove 2 and an annular seat 2, the inner wall of the circular ring is provided with an annular groove 2, and the outside of the screening disc is fixedly provided with an annular seat 2 matching the annular groove 2.
[0021] Compared with the prior art, the present invention has the following advantages:
[0022] 1: The rotatable screening disc can be used for quick preliminary screening. At the same time, the use of the ring and the reverse rotation of the two can achieve better screening and a certain crushing effect on the additives. At the same time, during the rotation of the ring, the bevel gear 1 and the bevel gear 2 can drive the crushing rod to rotate, and the additives intercepted on the screening disc can be directly crushed, which is convenient for better screening.
[0023] 2: The two-way thread on the rotating rod is used in conjunction with the air cylinder, the sealing disc, the tube body 1 and the tube body 2 to disperse the additives on the screening disc and the arc-shaped screening seat and promote their falling.
[0024] 3: The eccentrically rotating crushing seat can squeeze and crush the additives on the arc-shaped screening seat and have a certain lifting and dispersing effect. Axis three will also drive the scattering seat to rotate together, further improving the lifting and dispersing effect of the additive materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic structural diagram of a feed processing additive screening and filtering device proposed by the present invention;
[0026] Figure 2 for Figure 1 Schematic diagram of the internal structure;
[0027] Figure 3 for Figure 2 Schematic diagram of the structure after rotating a certain angle;
[0028] Figure 4 for Figure 3 Schematic diagram of the middle cylinder after it is rotated to a certain angle;
[0029] Figure 5 for Figure 4 Schematic diagram of the structure after the middle screening disc part rotates a certain angle;
[0030] Figure 6 for Figure 5 Schematic diagram of the structure after the middle screening disc part rotates a certain angle;
[0031] Figure 7 for Figure 6 An enlarged schematic diagram of the middle breaker rod after it rotates a certain angle;
[0032] Figure 8 The present invention provides a cross-sectional view of a screening cylinder in a screening and filtering device for feed processing additives.
[0033] In the figure: 1. screening cylinder; 2. feed pipe; 3. discharge pipe; 4. column; 5. base; 6. ring; 7. annular seat 2; 8. screening disc; 9. motor; 10. rotating rod; 11. fixed block 1; 12. shaft 1; 13. gear; 14. outer gear ring; 15. inner gear ring; 16. oblique block; 17. fixed block 2; 18. rotating cylinder; 19. crushing rod; 20. bevel gear 1; 21. bevel gear 2; 22. short rod; 23. air cylinder; 24. sealing disc; 25. tube body 1; 26. tube body 2; 27. shaft 3; 28. bevel gear 3; 29. bevel gear 4; 30. short block; 31. crushing seat; 32. scattering seat; 33. annular seat 1; 34. arc screening seat; 35. annular groove 1. DETAILED DESCRIPTION
[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0035] Reference Figure 1-Figure 8 , a feed processing additive screening and filtering device, comprising a screening drum 1 mounted on a support frame, the screening drum 1 is fixedly connected with a feed pipe 2 and a discharge pipe 3, a ring 6 is rotatably mounted in the screening drum 1 through a rotating component 1, a screening disc 8 is rotatably mounted in the ring 6 through a rotating component 2, a plurality of mesh holes are provided on the screening disc 8, and preliminary screening is performed using the mesh holes; the support frame comprises a column 4 and a base 5, a plurality of columns 4 are symmetrically fixedly mounted on the lower surface of the screening drum 1, a base 5 is fixedly mounted on the lower ends of the plurality of columns 4, the base 5 is preferably set to be circular, and the number of the columns 4 is at least three, and a funnel-shaped feed seat (which can be snap-fitted or fixedly set) is set at the upper end of the feed pipe 2, and then a cover body can be snap-fitted on the funnel-shaped feed seat, a valve (not shown in the figure) can be set on the discharge pipe 3, or a material receiving seat (not shown in the figure) can be directly placed on the base 5, and the small particle additives after screening and filtration can be directly collected.
[0036] Rotating component one includes an annular groove 1 35 and an annular seat 1 33. The inner wall of the screening drum 1 is provided with an annular groove 35, and the outer wall of the circular ring 6 is fixedly installed with an annular seat 1 33 matching the annular groove 1 35; rotating component two includes an annular groove 2 and annular seat 2 7. The inner wall of the circular ring 6 is provided with an annular groove 2, and the outer side of the screening disc 8 is fixedly installed with an annular seat 2 7 matching the annular groove 2; the functions of rotating component one and rotating component two are the same, so that the circular ring 6 can rotate relative to the screening drum 1 and the screening disc 8 can rotate relative to the circular ring 6, and at the same time, they play a limiting role in the vertical direction, so that the circular ring 6 and the screening disc 8 can rotate as required at the position shown in the figure.
[0037] There are no mesh holes on the ring 6, and a plurality of inclined blocks 16 are fixedly installed at equal intervals on the upper surface of the ring 6, so that the large particles collected on the ring 6 can be better transported back to the screening disc 8 during the rotation of the ring 6, and in this process, a preliminary collision effect can be achieved with the materials originally located on the screening disc 8.
[0038] Reference Figure 1-Figure 8 A motor 9 is fixedly installed on the screening drum 1, and a rotating rod 10 is fixedly installed on the driving end of the motor 9, and the lower end of the rotating rod 10 rotates and penetrates the screening drum 1, and the rotating rod 10 and the screening disc 8 are fixedly penetrated, and a matching rotating structure is installed between the screening disc 8 and the ring 6, and a preliminary crushing structure matching with the screening disc 8 is installed between the ring 6 and the rotating rod 10; the matching rotating structure enables the screening disc 8 to drive the ring 6 to rotate together during the rotation process, and the two rotate in opposite directions; the setting of the preliminary crushing structure can have a preliminary crushing effect on the larger particles on the screening disc 8.
[0039] The mating rotating structure includes a fixed block 11, a shaft 12, a gear 13, an outer gear ring 14, and an inner gear ring 15. The fixed block 11 is fixedly installed in the screening drum 1, the shaft 12 is rotatably installed on the fixed block 11, the gear 13 is rotatably installed on the shaft 12, the inner gear ring 15 is fixedly installed on the lower surface of the ring 6, the outer gear ring 14 is fixedly installed on the lower surface of the screening disc 8, and the gear 13 is meshed with the outer gear ring 14 and the inner gear ring 15 at the same time; the rotation of the outer gear ring 14 can drive the gear 13 meshing therewith to rotate, and the two rotate in opposite directions. When the gear 13 rotates, it will drive the inner gear ring 15 meshing therewith to rotate in the same direction, so that the ring 6 and the screening disc 8 rotate in opposite directions.
[0040] The preliminary crushing structure includes a fixed block 17, a shaft 2, a rotating cylinder 18, a crushing rod 19, a bevel gear 20, and a bevel gear 21. The fixed block 17 is fixedly installed on the screening disc 8, the shaft 2 is rotatably installed on the fixed block 17, the rotating cylinder 18 and the bevel gear 20 are fixedly installed on the shaft 2, a plurality of crushing rods 19 are fixedly installed at equal intervals on the outside of the rotating cylinder 18, and a bevel gear 21 meshing with the bevel gear 20 is fixedly installed on the rotating rod 10.
[0041] Reference Figure 1-Figure 8 , an air cylinder 23 is fixedly installed in the screening cylinder 1 through a plurality of short rods 22, the lower end of the rotating rod 10 rotates and penetrates the air cylinder 23, the part of the rotating rod 10 located in the air cylinder 23 is provided with a bidirectional thread, the part of the rotating rod 10 located in the air cylinder 23 is threadedly installed with a sealing disk 24, and the sealing disk 24 is sealingly slidably installed in the air cylinder 23, and the air cylinder 23 is fixedly connected with a pipe body 1 25, a pipe body 2 26 and two air supply pipes (the pipe body 1 25, the pipe body 2 26 and the air supply pipe are all one-way pipes, which are respectively located above and below the air cylinder 23); The rotating rod 10 is composed of two sections of shaft rods and a two-way threaded rod, and the two-way threaded rod is fixed between the two shaft rods. The setting of the two-way threaded rod allows the sealing disk 24 to move back and forth in the air cylinder 23. To ensure that the movement is carried out smoothly in the vertical direction, the end face shape of the sealing disk 24 can be set to a square, and the inner wall of the air cylinder 23 can also be set to a shape matching the sealing disk 24, or a limit rod (the limit rod can be one, two or more) is fixedly installed in the air cylinder 23, and then the sealing disk 24 slides through the limit rod in a sealing manner.
[0042] Reference Figure 1-Figure 8 A shaft three 27 is rotatably installed in the screening cylinder 1, and a transmission component is installed between the rotating rod 10 and the shaft three 27, and a breaking structure and a secondary crushing structure are installed on the shaft three 27; an arc-shaped screening seat 34 is fixedly installed in the screening cylinder 1; the arc-shaped screening seat 34 is also provided with mesh holes (in accordance with the required size), and the aperture of this part of the mesh holes is smaller than the aperture of the mesh holes on the screening disc 8. The arrangement of the transmission component enables the rotating rod 10 to directly drive the shaft three 27 to rotate during the rotation process, and the secondary crushing structure is used to crush the particles that have not passed through the arc-shaped screening seat 34, so as to obtain additives of the required size.
[0043] The transmission component includes a bevel gear three 28 and a bevel gear four 29. The bevel gear three 28 is fixedly installed on the rotating rod 10, and the bevel gear four 29 meshing with the bevel gear three 28 is fixedly installed on the shaft three 27; the secondary crushing structure includes a short block 30 and a crushing seat 31. A plurality of short blocks 30 are fixedly installed on the shaft three 27, and a crushing seat 31 is fixedly installed on the corresponding plurality of short blocks 30, and the crushing seat 31 is eccentrically arranged relative to the shaft three 27. There are two crushing seats 31, which are respectively located on both sides of the transmission component; the crushing seat 31 can rotate eccentrically with the shaft three 27, and the eccentric rotation can be used to complete the extrusion and crushing of larger additive particles located therebelow.
[0044] The dispersing structure includes a dispersing seat 32, two dispersing seats 32 are fixedly installed on the shaft three 27, and the transmission component is located in the middle position of the dispersing seat 32, and the two dispersing seats 32 are provided with inclined dispersion grooves; the dispersing seat 32 is used to drive the additive particles located at the bottom to lift up, and then after rotating to a certain height, they can slide along the dispersion groove, thereby achieving a lifting and dispersing effect, and cooperating with the secondary crushing structure, better crushing can be performed.
[0045] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.
[0046] In the present invention, the additives to be screened and filtered are poured into the screening cylinder 1, and the motor 9 is turned on (the motor 9 can be turned on or off and the additives can be poured in at the same time, but during operation, it is preferred that the motor 9 is turned on and the additives are poured in continuously), the motor 9 drives the rotating rod 10 to rotate, and the rotation of the rotating rod 10 directly drives the screening disc 8 to rotate, so that part of the additive material can directly pass through the screening disc 8 and fall downward, and most of the larger size (which cannot fall down) will be directly thrown onto the ring 6;
[0047] The rotation of the rotating rod 10 drives the outer gear ring 14 to rotate, and the rotation of the outer gear ring 14 drives the inner gear ring 15 to rotate through the gear 13, and the rotation of the inner gear ring 15 drives the ring 6 to rotate (opposite to the rotation direction of the screening disc 8). The ring 6 rotates with the cooperation of the inclined block 16, and transfers the additives with larger particles thereon to the screening disc 8 (the effect of centrifugal force). This process can directly have an impact crushing effect with the large particles on the screening disc 8. At the same time, the ring 6 can drive the shaft 21 to move during the rotation process, and with the cooperation of the bevel gear 1 20 and the bevel gear 21, the crushing rod 19 can rotate quickly, thereby quickly crushing the additives with larger particles intercepted on the screening disc 8, so that the materials can better pass through the screening disc 8 and fall downward;
[0048] During the rotation process, the rotating rod 10 will drive the sealing disk 24 to reciprocate in the air cylinder 23, and the reciprocating movement can be used to realize the inhalation and extrusion of gas. The extruded gas passes through the tube body 1 25 and the tube body 2 26 (as shown in the figure, when the sealing disk 24 moves up, the gas is squeezed out through the tube body 2 26, and when it moves down, the gas is squeezed out through the tube body 1 25). The gas blown out of the tube body 1 25 can disperse the additives on the screening disc 8 and promote the falling of the additives, and the gas blown out of the tube body 2 26 can also disperse the additives on the arc screening seat 34 and promote the falling of the additives.
[0049] The rotation of the rotating rod 10 will drive the shaft 3 27 to rotate together through the cooperation of the bevel gear 3 28 and the bevel gear 4 29. The rotation of the shaft 3 27 drives the crushing seat 31 to rotate eccentrically, thereby squeezing and crushing the additives on the arc-shaped screening seat 34 and having a certain lifting and dispersing effect. The shaft 3 27 will also drive the scattering seat 32 to rotate together, further improving the lifting and dispersing effect of the additive materials.
[0050] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A feed processing additive screening and filtering device, comprising a screening cylinder (1) mounted on a support frame, characterized in that: The screening cylinder (1) is fixedly connected to a feed pipe (2) and a discharge pipe (3); a ring (6) is rotatably mounted in the screening cylinder (1) via a first rotating assembly; a screening disc (8) is rotatably mounted in the ring (6) via a second rotating assembly; A motor (9) is fixedly mounted on the screening cylinder (1), a rotating rod (10) is fixedly mounted on the driving end of the motor (9), and the lower end of the rotating rod (10) rotates to penetrate the screening cylinder (1), and the rotating rod (10) and the screening disc (8) are fixedly penetrated; A matching rotating structure is installed between the screening disc (8) and the ring (6); A preliminary crushing structure that matches the screening disc (8) is installed between the circular ring (6) and the rotating rod (10); An air cylinder (23) is fixedly installed in the screening cylinder (1) via a plurality of short rods (22); the lower end of the rotating rod (10) rotates and penetrates the air cylinder (23); the portion of the rotating rod (10) located in the air cylinder (23) is provided with a bidirectional thread; the portion of the rotating rod (10) located in the air cylinder (23) is threadedly installed with a sealing disk (24), and the sealing disk (24) is sealingly slidably installed in the air cylinder (23); the air cylinder (23) is fixedly connected with a pipe body 1 (25), a pipe body 2 (26) and two air supply pipes; A third shaft (27) is rotatably mounted in the screening cylinder (1), and a transmission component is mounted between the rotating rod (10) and the third shaft (27). A breaking up structure and a secondary crushing structure are mounted on the third shaft (27); An arc-shaped screening seat (34) is fixedly installed in the screening cylinder (1).
2. A feed processing additive screening and filtering device according to claim 1, characterized in that: The support frame comprises a column (4) and a base (5); a plurality of columns (4) are symmetrically fixedly mounted on the lower surface of the screening drum (1); and a base (5) is commonly fixedly mounted at the lower ends of the plurality of columns (4).
3. The feed processing additive screening and filtering device according to claim 1, characterized in that: The rotating assembly 1 comprises an annular groove 1 (35) and an annular seat 1 (33); the inner wall of the screening cylinder (1) is provided with an annular groove 1 (35); and the outer wall of the circular ring (6) is fixedly provided with an annular seat 1 (33) matching the annular groove 1 (35).
4. The feed processing additive screening and filtering device according to claim 1, characterized in that: The mating rotating structure comprises a fixed block (11), a shaft (12), a gear (13), an outer gear ring (14), and an inner gear ring (15); the fixed block (11) is fixedly mounted inside the screening cylinder (1); the shaft (12) is rotatably mounted on the fixed block (11); the gear (13) is rotatably mounted on the shaft (12); the inner gear ring (15) is fixedly mounted on the lower surface of the ring (6); the outer gear ring (14) is fixedly mounted on the lower surface of the screening disc (8); and the gear (13) is meshed with both the outer gear ring (14) and the inner gear ring (15).
5. The feed processing additive screening and filtering device according to claim 1, characterized in that: A plurality of inclined blocks (16) are fixedly mounted at equal intervals on the upper surface of the circular ring (6).
6. The feed processing additive screening and filtering device according to claim 1, characterized in that: The preliminary crushing structure comprises a second fixed block (17), a second shaft, a rotating cylinder (18), a crushing rod (19), a first bevel gear (20), and a second bevel gear (21). The second fixed block (17) is fixedly mounted on the screening disc (8). The second shaft is rotatably mounted on the second fixed block (17). The second shaft is fixedly mounted on the second shaft and the first bevel gear (20). A plurality of crushing rods (19) are fixedly mounted at equal intervals on the outside of the rotating cylinder (18). The second bevel gear (21) meshing with the first bevel gear (20) is fixedly mounted on the rotating rod (10).
7. The feed processing additive screening and filtering device according to claim 1, characterized in that: The transmission component comprises a bevel gear three (28) and a bevel gear four (29); the bevel gear three (28) is fixedly mounted on the rotating rod (10); and the bevel gear four (29) meshing with the bevel gear three (28) is fixedly mounted on the shaft three (27).
8. The feed processing additive screening and filtering device according to claim 7, characterized in that: The secondary crushing structure comprises a short block (30) and a crushing seat (31). A plurality of short blocks (30) are fixedly mounted on the shaft three (27). A crushing seat (31) is fixedly mounted on the corresponding plurality of short blocks (30). The crushing seat (31) is eccentrically arranged relative to the shaft three (27). There are two crushing seats (31), which are respectively located on both sides of the transmission component.
9. The feed processing additive screening and filtering device according to claim 8, characterized in that: The dispersing structure comprises a dispersing seat (32), two dispersing seats (32) are fixedly mounted on the shaft three (27), and the transmission component is located in the middle of the dispersing seat (32), and the two dispersing seats (32) are both provided with an inclined dispersing groove.
10. The feed processing additive screening and filtering device according to claim 1, characterized in that: The second rotating assembly comprises a second annular groove and a second annular seat (7). The inner wall of the circular ring (6) is provided with a second annular groove. The outer portion of the screening disc (8) is fixedly provided with a second annular seat (7) matching the second annular groove.
Citation Information
Patent Citations
Crushing and grinding device for raw material medicines
CN118681642A
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CN217120524U