Grinding equipment for precise preparation of polymer drug carrier

Abstract

The utility model relates to the technical field of medicine carrier grinding, and discloses precise polymer medicine carrier preparing and grinding equipment which comprises a grinding cylinder and a feeding pipe fixedly installed at the position, close to the left side, of the top of the grinding cylinder in a penetrating mode, and an opening and closing assembly is installed at the position, close to the bottom, of the left side of the grinding cylinder. A driving motor is arranged above the middle of the top of the grinding cylinder, a knocking assembly is installed on an output shaft of the driving motor, a stirring shaft is fixedly installed at the output end of the driving motor, and a driving bevel gear, a driven bevel gear, a rotating rod, a rotating disc, a swing rod, a movable plate, a guide rod and a baffle are matched with one another, so that the stirring effect is improved; according to the medical carrier feeding device, the baffle can be driven to move left and right back and forth in the feeding pipe, indirect discharging of medical carriers can be achieved, follow-up grinding balls can rotate in the grinding base to grind raw materials, the situation that too much raw materials are added to affect the grinding effect is avoided, in addition, the raw materials can be smashed during discharging, and the follow-up grinding effect is better.

Description

Technical Field

[0001] This utility model relates to the technical field of drug carrier grinding, specifically to a precision polymer drug carrier preparation and grinding device. Background Technology

[0002] Drug carriers are systems that can alter the way drugs enter the human body and their distribution within the body, control the release rate of drugs, and deliver drugs to target organs. Among drug carriers, biopolymers derived from animals, plants, and microorganisms have become an important class of drug carrier materials due to their good biocompatibility, biodegradability, and renewability. There are many types of drug carriers, among which microcapsules and microspheres, nanoparticles, and liposomes are relatively mature.

[0003] Existing precision polymer drug carrier preparation and grinding equipment typically involves directly adding raw materials into the grinding chamber for grinding. Adding too much raw material can affect grinding efficiency and result in poor grinding quality, thus reducing the effectiveness of the equipment.

[0004] Therefore, we propose a precision polymer drug carrier preparation and grinding device to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a precision polymer drug carrier preparation and grinding device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precision polymer drug carrier preparation grinding device, comprising a grinding cylinder and a feed pipe fixedly installed through the top of the grinding cylinder near the left side. An opening and closing component is installed on the left side of the grinding cylinder near the bottom, and a drive motor is provided above the middle of the top of the grinding cylinder. A striking component is installed on the output shaft of the drive motor, and a stirring shaft is fixedly installed at the output end of the drive motor. The lower end of the stirring shaft extends movably through the inner cavity of the grinding cylinder, and several cutting blades are fixedly installed on the output shaft of the stirring shaft. A grinding seat is fixedly installed near the middle of the inner cavity of the grinding cylinder. A grinding chamber is opened on the grinding seat near the bottom, and a feed port and a discharge port communicating with the inner cavity of the grinding chamber are respectively opened at the top and bottom of the grinding seat. Grinding balls are rotatably installed in the inner cavity of the grinding chamber, and the lower end of the stirring shaft is fixedly installed on the grinding balls. A screen plate is fixedly installed near the bottom of the inner cavity of the grinding cylinder.

[0007] The opening and closing assembly includes an active bevel gear located on the left side of the grinding cylinder near the bottom and a driven bevel gear meshing with the top of the active bevel gear. A rotating rod is fixedly installed at the middle of the top of the driven bevel gear, and a limiting plate is fixedly installed on the left side of the grinding cylinder near the top. The upper end of the rotating rod extends movably through to the outside of the limiting plate and is fixedly installed on a turntable. A swing rod is movably installed on the top of the turntable near the right side, and a movable plate is movably installed on the right end of the swing rod. A baffle is fixedly installed on the right side of the movable plate near the bottom, and the right side of the baffle slides through to the inner cavity of the feed pipe.

[0008] Preferably, two guide rods are slidably installed on the movable plate near the top, and the guide rods are arranged front and back, with the right ends of the guide rods fixedly installed on the feed pipe.

[0009] Preferably, the bottom of the inner cavity of the grinding cylinder is fitted with a material collection trough, and an opening is provided at the lower front side of the inner cavity of the grinding cylinder. A handle is fixedly installed in the middle of the front side of the material collection trough, and the handle is located in the inner cavity of the opening.

[0010] Preferably, support legs are fixedly installed at the bottom of the grinding cylinder near the four corners.

[0011] Preferably, an L-shaped plate is fixedly mounted on the top of the drive motor, and the bottom of the L-shaped plate is fixedly mounted on the grinding cylinder.

[0012] Preferably, the striking assembly includes a transmission bevel gear fixedly mounted on the output shaft of the drive motor and a rotating bevel gear meshing with the right side of the transmission bevel gear. A transmission rod is fixedly mounted on the right side of the rotating bevel gear, and a vertical plate is fixedly mounted on the top of the grinding cylinder near the right side. The right end of the transmission rod extends movably through to the outside of the vertical plate. A movable shaft is provided near the bottom of the inner cavity of the grinding cylinder. The left and right ends of the movable shaft extend movably through to the outside of the grinding cylinder, and the left end of the movable shaft is fixedly mounted on the drive bevel gear. Cams are fixedly sleeved on the output shaft of the movable shaft near the left and right ends, and a push ring is provided on the top of the cams. Several sliding rods are slidably mounted at equal intervals near the front and rear sides of the push ring, and striking balls are fixedly mounted on the upper ends of the sliding rods.

[0013] Preferably, a limiting telescopic rod is fixedly installed on the top of the push ring near the left and right sides, and the upper end of the limiting telescopic rod is fixedly installed on the screen plate.

[0014] Preferably, a return spring is sleeved on the output shaft of the sliding rod, and the upper and lower ends of the return spring are fixedly installed on the striking ball and the push ring, respectively.

[0015] Preferably, a first single-groove wheel and a second single-groove wheel are fixedly sleeved on the output ends of the transmission rod and the movable shaft, respectively, and a belt is sleeved on the outer side of the first single-groove wheel and the second single-groove wheel.

[0016] Preferably, a rotating shaft is fixedly installed at the bottom of the grinding ball, a circular seat is fixedly installed at the lower end of the rotating shaft, and scrapers are fixedly installed on the left and right sides of the circular seat, with the bottom of the scrapers respectively attached to the top of the screen plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. Through the cooperation of components such as the active bevel gear, driven bevel gear, rotating rod, turntable, swing rod, movable plate, guide rod and baffle, the baffle can be driven to move back and forth in the feed pipe, thereby realizing the indirect feeding of the pharmaceutical carrier. This facilitates the subsequent grinding of the raw materials by the rotating grinding balls in the grinding seat, avoiding the addition of too much material which would affect the grinding effect. In addition, the raw materials can also be crushed during feeding, making the subsequent grinding effect better.

[0019] 2. Through the cooperation of the transmission bevel gear, rotating bevel gear, transmission rod, belt, movable shaft, cam, push ring, limit telescopic rod, sliding rod, return spring and striking ball, the striking ball can be driven to continuously strike the screen plate back and forth, thereby avoiding the phenomenon of screen plate clogging during screening, and improving the screening effect and efficiency. Attached Figure Description

[0020] Figure 1 This is a perspective view of the entire utility model;

[0021] Figure 2 This is a partial cross-sectional perspective view of the present invention;

[0022] Figure 3 This is a partial cross-sectional perspective view of the present invention.

[0023] Figure 4 This is a partial right-side sectional perspective view of the present invention;

[0024] Figure 5 This is a partial cross-sectional perspective view from below of the present invention;

[0025] Figure 6 This is a partial cross-sectional unfolded three-dimensional view of the present invention;

[0026] Figure 7 For the present utility model Figure 3 Enlarged view of point A in the middle;

[0027] Figure 8 For the present utility model Figure 5 Enlarged view of section B in the middle.

[0028] In the diagram: 1. Grinding cylinder; 11. Support leg; 2. Feed pipe; 3. Opening and closing assembly; 31. Driving bevel gear; 32. Driven bevel gear; 33. Rotating rod; 34. Turntable; 35. Swinging rod; 36. Movable plate; 361. Guide rod; 37. Baffle; 4. Drive motor; 41. L-shaped plate; 5. Striking assembly; 51. Transmission bevel gear; 52. Rotating bevel gear; 53. Transmission rod; 531. Belt; 54. Movable shaft; 55. Cam; 56. Push ring; 561. Limiting telescopic rod; 57. Sliding rod; 571. Return spring; 58. Striking ball; 6. Stirring shaft; 7. Cutting blade; 8. Grinding seat; 9. Grinding ball; 91. Rotating shaft; 92. Scraper; 10. Screen plate; 20. Collection trough; 30. Handle. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] Please see Figure 1-8 A precision polymer drug carrier preparation and grinding device includes a grinding cylinder 1 and a feed pipe 2 fixedly installed through the top of the grinding cylinder 1 near the left side. An opening and closing assembly 3 is installed on the left side of the grinding cylinder 1 near the bottom. A drive motor 4 is located above the middle of the top of the grinding cylinder 1. A striking assembly 5 is installed on the output shaft of the drive motor 4. A stirring shaft 6 is fixedly installed at the output end of the drive motor 4. The lower end of the stirring shaft 6 extends movably through the inner cavity of the grinding cylinder 1, and several cutting blades 7 are fixedly installed on the output shaft of the stirring shaft 6. A grinding seat 8 is fixedly installed near the middle of the inner cavity of the grinding cylinder 1. A grinding chamber is opened near the bottom of the grinding seat 8. The top and bottom of the grinding seat 8 are respectively provided with a feed port and a discharge port that communicate with the inner cavity of the grinding chamber. A grinding ball 9 is rotatably installed in the inner cavity of the grinding chamber, and the lower end of the stirring shaft 6 is fixedly installed on the grinding ball 9. A screen plate 10 is fixedly installed near the bottom of the inner cavity of the grinding cylinder 1. The opening and closing component 3 facilitates the indirect feeding of raw materials, while the striking component 5 can strike the bottom of the screen plate 10.

[0032] The opening and closing assembly 3 includes an active bevel gear 31 located on the left side of the grinding cylinder 1 near the bottom and a driven bevel gear 32 meshing with the top of the active bevel gear 31. A rotating rod 33 is fixedly installed at the middle of the top of the driven bevel gear 32, and a limiting plate is fixedly installed on the left side of the grinding cylinder 1 near the top. The upper end of the rotating rod 33 extends movably through to the outside of the limiting plate and is fixedly installed on a turntable 34. A swing rod 35 is movably installed on the top of the turntable 34 near the right side, and a movable plate 36 is movably installed on the right end of the swing rod 35. A baffle 37 is fixedly installed on the right side of the movable plate 36 near the bottom, and the right side of the baffle 37 slides through to the inner cavity of the feed pipe 2, which can drive the baffle 37 to move back and forth left and right in the feed pipe 2 to realize the indirect feeding of materials, which is conducive to the subsequent grinding work.

[0033] Two guide rods 361 are slidably installed on the movable plate 36 near the top, and the guide rods 361 are arranged front and back. The right ends of the guide rods 361 are fixedly installed on the feed pipe 2, which serves to guide and limit the movement of the movable plate 36.

[0034] The bottom of the inner cavity of the grinding cylinder 1 is fitted with a material collection trough 20, and an opening is provided at the lower front side of the inner cavity of the grinding cylinder 1. A handle 30 is fixedly installed in the middle of the front side of the material collection trough 20. The handle 30 is located in the inner cavity of the opening, which facilitates the collection of the raw materials after grinding.

[0035] Support legs 11 are fixedly installed at the bottom of the grinding cylinder 1 near the four corners, which serve to support the grinding cylinder 1.

[0036] An L-shaped plate 41 is fixedly installed on the top of the drive motor 4, and the bottom of the L-shaped plate 41 is fixedly installed on the grinding cylinder 1, which serves to support the drive motor 4.

[0037] A rotating shaft 91 is fixedly installed at the bottom of the grinding ball 9. A circular seat is fixedly installed at the lower end of the rotating shaft 91. Scrapers 92 are fixedly installed on the left and right sides of the circular seat, and the bottom of the scrapers 92 is attached to the top of the screen plate 10. This allows the grinding ball 9 to rotate and drive the scrapers 92 to clean the top of the screen plate 10.

[0038] In this embodiment: During use, raw materials can be added into the feed pipe 2. The material enters the inner cavity of the grinding cylinder 1 through the feed pipe 2 and also enters the grinding chamber through the feed inlet. Then, the drive motor 4 is activated, which drives the stirring shaft 6 to rotate. The rotation of the stirring shaft 6 drives several cutting blades 7 to rotate, cutting and crushing the added raw materials. The rotation of the stirring shaft 6 also drives the grinding balls 9 to rotate within the grinding chamber, achieving grinding of the raw materials. The ground raw materials fall onto the screen plate 10, which then sieves the material, allowing suitable materials to fall into the collection bin. Inside the trough 20, when the grinding ball 9 rotates, it can also drive the scraper 92 through the rotating shaft 91 to scrape the surface of the screen plate 10, improving the screening efficiency. When the drive motor 4 rotates, it will also provide power for the rotation of the active bevel gear 31. When the active bevel gear 31 rotates, it will drive the rotating rod 33 to rotate through the driven bevel gear 32. When the rotating rod 33 rotates, it will drive the turntable 34 to rotate. When the turntable 34 rotates, it will drive the movable plate 36 to move back and forth left and right through the swing rod 35. When the movable plate 36 moves left and right, it will drive the baffle 37 to move back and forth left and right in the feed pipe 2, thereby realizing the indirect feeding of raw materials and avoiding adding too much at once, which will affect the grinding effect.

[0039] Example 2

[0040] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figure 1-6 and Figure 8 The striking assembly 5 includes a transmission bevel gear 51 fixedly mounted on the output shaft of the drive motor 4 and a rotating bevel gear 52 meshing with the right side of the transmission bevel gear 51. A transmission rod 53 is fixedly mounted on the right side of the rotating bevel gear 52, and a vertical plate is fixedly mounted on the top of the grinding cylinder 1 near the right side. The right end of the transmission rod 53 extends movably through to the outside of the vertical plate. A movable shaft 54 ​​is provided near the bottom of the inner cavity of the grinding cylinder 1. The left and right ends of the movable shaft 54 ​​extend movably through to the outside of the grinding cylinder 1, and the left end of the movable shaft 54 ​​is fixedly mounted on the drive bevel gear 31. Cams 55 are fixedly sleeved on the output shaft of the movable shaft 54 ​​near the left and right ends, respectively. A push ring 56 is provided on the top of the cams 55. Several sliding rods 57 are slidably mounted on the push ring 56 near the front and rear sides at equal intervals. A striking ball 58 is fixedly mounted on the upper end of each sliding rod 57, which can drive the striking ball 58 to continuously strike the screen plate 10 back and forth, causing it to vibrate and preventing clogging during screening.

[0041] Limiting telescopic rods 561 are fixedly installed on the top of the push ring 56 near the left and right sides, and the upper ends of the limiting telescopic rods 561 are fixedly installed on the screen plate 10, which serves to guide and limit the movement of the push ring 56.

[0042] A return spring 571 is sleeved on the output shaft of the sliding rod 57, and the upper and lower ends of the return spring 571 are fixedly installed on the striking ball 58 and the push ring 56, respectively, which facilitates the movement and restoration of the sliding rod 57.

[0043] The first single-groove pulley and the second single-groove pulley are respectively fixedly sleeved on the output ends of the transmission rod 53 and the movable shaft 54, and the outer sides of the first single-groove pulley and the second single-groove pulley are jointly sleeved with a belt 531, which can drive the transmission rod 53 and the movable shaft 54 ​​to rotate synchronously.

[0044] In this embodiment: when the drive motor 4 rotates, it drives the transmission bevel gear 51 to rotate. When the transmission bevel gear 51 rotates, it drives the transmission rod 53 to rotate through the rotating bevel gear 52. Under the transmission of the belt 531, it drives the movable shaft 54 ​​to rotate. When the movable shaft 54 ​​rotates, it drives the drive bevel gear 31 to rotate. When the movable shaft 54 ​​rotates, it drives the cams 55 on both sides to rotate. When the cams 55 rotate to contact the push ring 56, they push it to move upward. When the push ring 56 moves upward, it drives several striking balls 58 to strike the bottom of the screen plate 10. The reset spring 571 can play a buffering role. When the cams 55 rotate away from the push ring 56, the push ring 56 will move downward to return to its original position under its own gravity. The continuous rotation of the cams 55 drives the striking balls 58 to strike the screen plate 10 back and forth. Through the generation of vibration, the phenomenon of clogging during screening can be avoided.

[0045] Working principle: During use, raw materials can be added into the feed pipe 2. The material will enter the inner cavity of the grinding cylinder 1 through the feed pipe 2, and simultaneously enter the grinding chamber through the feed inlet. Then, the drive motor 4 will start, which will drive the stirring shaft 6 to rotate. When the stirring shaft 6 rotates, it will drive several cutting blades 7 to rotate. The rotation of the cutting blades 7 can cut and crush the added raw materials. The rotation of the stirring shaft 6 can also drive the grinding balls 9 to rotate in the grinding chamber, thereby grinding the raw materials. The ground raw materials will fall onto the screen plate. On screen 10, the screen plate 10 screens the ground raw materials, allowing the qualified materials to fall into the inner cavity of the collection trough 20. When the grinding balls 9 rotate, they can also drive the scraper 92 via the rotating shaft 91 to scrape the surface of the screen plate 10, improving screening efficiency. When the drive motor 4 rotates, it drives the transmission bevel gear 51 to rotate. The rotation of the transmission bevel gear 51, in turn, drives the transmission rod 53 to rotate via the rotating bevel gear 52. This, in turn, drives the movable shaft 54 ​​to rotate under the transmission of the belt 531. When the cam 54 rotates, it drives the active bevel gear 31 to rotate. The rotation of the movable shaft 54 ​​then drives the cams 55 on both sides to rotate. When the cam 55 rotates to contact the push ring 56, it pushes the ring upwards. As the push ring 56 moves upwards, it drives several striking balls 58 to strike the bottom of the screen plate 10. The return spring 571 acts as a buffer. When the cam 55 rotates away from the push ring 56, the push ring 56 will move downwards to return to its original position under its own weight. The continuous rotation of the cam 55 drives the striking balls 58 to strike the bottom of the screen plate 10. 8. The screen plate 10 is repeatedly struck back and forth. The vibration generated can prevent clogging during screening. In addition, when the active bevel gear 31 rotates, it drives the rotating rod 33 to rotate through the driven bevel gear 32. When the rotating rod 33 rotates, it drives the turntable 34 to rotate. When the turntable 34 rotates, it drives the movable plate 36 to move back and forth left and right through the swing rod 35. When the movable plate 36 moves left and right, it drives the baffle 37 to move back and forth left and right in the feed pipe 2, thereby realizing the indirect feeding of raw materials and avoiding adding too much at once, which would affect the grinding effect.

[0046] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precision polymer drug carrier preparation grinding device, comprising a grinding cylinder (1) and a feed pipe (2) fixedly installed through the top of the grinding cylinder (1) near the left side, characterized in that: An opening and closing assembly (3) is installed on the left side near the bottom of the grinding cylinder (1), and a drive motor (4) is provided above the middle of the top of the grinding cylinder (1). A striking assembly (5) is installed on the output shaft of the drive motor (4). A stirring shaft (6) is fixedly installed at the output end of the drive motor (4). The lower end of the stirring shaft (6) extends movably through the inner cavity of the grinding cylinder (1). Several cutting blades (7) are fixedly installed on the output shaft of the stirring shaft (6). A grinding seat (8) is fixedly installed near the middle of the inner cavity of the grinding cylinder (1). A grinding cavity is opened near the bottom of the grinding seat (8). A feed port and a discharge port connected to the inner cavity of the grinding cavity are opened at the top and bottom of the grinding seat (8), respectively. A grinding ball (9) is rotatably installed in the inner cavity of the grinding cavity. The lower end of the stirring shaft (6) is fixedly installed on the grinding ball (9). A screen plate (10) is fixedly installed near the bottom of the inner cavity of the grinding cylinder (1). The opening and closing assembly (3) includes an active bevel gear (31) located on the left side of the grinding cylinder (1) near the bottom and a driven bevel gear (32) meshing with the top of the active bevel gear (31). A rotating rod (33) is fixedly installed at the middle of the top of the driven bevel gear (32), and a limiting plate is fixedly installed on the left side of the grinding cylinder (1) near the top. The upper end of the rotating rod (33) extends movably through to the outside of the limiting plate and is fixedly installed on a turntable (34). A swing rod (35) is movably installed on the top of the turntable (34) near the right side. A movable plate (36) is movably installed on the right end of the swing rod (35). A baffle (37) is fixedly installed on the right side of the movable plate (36) near the bottom, and the right side of the baffle (37) slides through to the inner cavity of the feed pipe (2).

2. The precision polymer drug carrier preparation and grinding equipment according to claim 1, characterized in that: Two guide rods (361) are slidably installed on the movable plate (36) near the top, and the guide rods (361) are arranged in front and behind. The right ends of the guide rods (361) are fixedly installed on the feed pipe (2).

3. The precision polymer drug carrier preparation and grinding equipment according to claim 1, characterized in that: The bottom of the inner cavity of the grinding cylinder (1) is fitted with a material collection trough (20), and an opening is provided at the lower front side of the inner cavity of the grinding cylinder (1). A handle (30) is fixedly installed in the middle of the front side of the material collection trough (20), and the handle (30) is located in the inner cavity of the opening.

4. The precision polymer drug carrier preparation and grinding equipment according to claim 1, characterized in that: Support legs (11) are fixedly installed at the bottom of the grinding cylinder (1) near the four corners.

5. The precision polymer drug carrier preparation and grinding equipment according to claim 1, characterized in that: The top of the drive motor (4) is fixedly mounted with an L-shaped plate (41), and the bottom of the L-shaped plate (41) is fixedly mounted on the grinding cylinder (1).

6. The precision polymer drug carrier preparation and grinding equipment according to claim 1, characterized in that: The striking assembly (5) includes a transmission bevel gear (51) fixedly mounted on the output shaft of the drive motor (4) and a rotating bevel gear (52) meshing with the right side of the transmission bevel gear (51). A transmission rod (53) is fixedly mounted on the right side of the rotating bevel gear (52), and a vertical plate is fixedly mounted on the top of the grinding cylinder (1) near the right side. The right end of the transmission rod (53) extends movably through to the outside of the vertical plate. A movable shaft (54) is provided in the inner cavity of the grinding cylinder (1) near the bottom. The left and right ends of the shaft extend through to the outside of the grinding cylinder (1), and the left end of the shaft (54) is fixedly mounted on the active bevel gear (31). Cams (55) are fixedly sleeved on the output shaft of the shaft (54) near the left and right ends. A push ring (56) is provided on the top of the cams (55). Several sliding rods (57) are equidistantly mounted on the push ring (56) near the front and rear sides. A striking ball (58) is fixedly mounted on the upper end of the sliding rod (57).

7. The precision polymer drug carrier preparation and grinding equipment according to claim 6, characterized in that: Limiting telescopic rods (561) are fixedly installed on the top of the push ring (56) near the left and right sides respectively, and the upper ends of the limiting telescopic rods (561) are fixedly installed on the screen plate (10).

8. The precision polymer drug carrier preparation and grinding equipment according to claim 6, characterized in that: The output shaft of the sliding rod (57) is respectively fitted with a return spring (571), and the upper and lower ends of the return spring (571) are respectively fixedly installed on the striking ball (58) and the push ring (56).

9. The precision polymer drug carrier preparation and grinding equipment according to claim 6, characterized in that: The first single-groove wheel and the second single-groove wheel are respectively fixedly sleeved on the output ends of the transmission rod (53) and the movable shaft (54), and a belt (531) is sleeved on the outer side of the first single-groove wheel and the second single-groove wheel.

10. The precision polymer drug carrier preparation and grinding equipment according to claim 1, characterized in that: The bottom of the grinding ball (9) is fixedly installed with a rotating shaft (91), and a circular seat is fixedly installed at the lower end of the rotating shaft (91). Scrapers (92) are fixedly installed on the left and right sides of the circular seat, and the bottom of the scrapers (92) is attached to the top of the screen plate (10).

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