Accurate polymer polyethylene glycol drug carrier refining device

Abstract

The utility model relates to the technical field of drug carrier refining, and discloses an accurate macromolecular polyethylene glycol drug carrier refining device which comprises a refining box and a feed hopper fixedly mounted in the middle of the top of the refining box in a penetrating manner, through mutual cooperation of an L-shaped rod, a pushing block, a movable block, a side plate, a guide rod, a reset spring B, a rack plate, a movable gear and a U-shaped discharging frame, the U-shaped discharging frame can be driven to swing back and forth and left and right, namely, raw materials can swing back and forth and left and right, swinging discharging of the raw materials is achieved, the raw materials can be scattered on a screening plate, and the screening efficiency is improved. Through mutual cooperation of an L-shaped plate, a driving motor, a reciprocating lead screw, a movable rod, a belt A, a transmission rod, a belt B, a lead screw nut, a connecting plate A, a connecting plate B, a movable rod and a flattening block, the flattening block can be driven to move left and right on the screening plate back and forth, dispersion of the falling raw materials is achieved, and the screening efficiency is improved. And the screening effect can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field that medicine carrier refines, concretely is a kind of accurate high-molecular polyethylene glycol medicine carrier refining device. BACKGROUND

[0002] Medicine carrier refers to the system that can change the way of medicine into human body and distribution in body, control the release speed of medicine and deliver medicine to target organ, in medicine carrier, biological polymer derived from animal, plant and microorganism, because its good biocompatibility, biodegradable and renewable, become an important medicine carrier material, and medicine carrier needs to be screened after being made, so that impurities are separated, so medicine carrier refining device is needed.

[0003] The existing accurate high-molecular polyethylene glycol medicine carrier refining device usually directly adds raw materials after production into screening box when in use, and the addition through feeding pipe will always fall on a certain place on filter screen, so that the screening effect is poor, and the use effect of refining device is reduced.

[0004] Therefore, we propose an accurate high-molecular polyethylene glycol medicine carrier refining device to solve the problems raised in the above. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an accurate high-molecular polyethylene glycol medicine carrier refining device to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: an accurate high-molecular polyethylene glycol medicine carrier refining device, comprising a refining box and a feeding hopper fixedly penetrated and installed at the middle part of the top of the refining box, the front side of the refining box is movably installed with a movable door, a handle is fixedly installed at the front side near the right side of the movable door, support legs are fixedly installed at the bottom of the refining box near four corners respectively, a spreading assembly is installed at the right side near the middle part of the refining box, two screening plates are fixedly installed at the inner cavity of the refining box near the middle part, the screening plates are arranged in an up-down manner, a knocking assembly is jointly installed at the lower part of the left side of the bottom of the screening plate, a swinging assembly is installed at the rear side of the right side of the refining box, and a collecting groove is attached to the inner cavity of the refining box near the bottom.

[0007] The swinging assembly comprises an L-shaped rod arranged at the right rear side of the finishing box, a pushing block fixedly installed at the left end of the L-shaped rod, a movable block arranged at the left side of the pushing block, a rack plate fixedly installed at the top of the movable block, the front side of the rack plate slidingly installed on the finishing box, an active gear engaged with the top of the rack plate, a rotating shaft A fixedly and penetratingly installed at the middle of the active gear, the front end of the rotating shaft A movably and penetratingly extended into the inner cavity of the finishing box, a U-shaped blanking frame fixedly installed at the front side of the rotating shaft B, and the front end of the rotating shaft B movably installed on the inner wall of the inner cavity of the finishing box.

[0008] Preferably, the left side of the movable block is provided with a side plate, the front side of the side plate is fixedly installed on the finishing box, the right side of the side plate is provided with guide rods respectively fixedly installed near the top and the bottom, the right ends of the guide rods are movably and penetratingly extended to the outer side of the movable block, the outer sides of the guide rods are respectively sleeved with return springs B, and the two ends of the return springs B are respectively fixedly installed on the side plate and the movable block.

[0009] Preferably, the spreading assembly comprises an L-shaped plate fixedly installed near the middle of the right side of the finishing box, a driving motor fixedly installed at the right side of the L-shaped plate, the output end of the driving motor movably and penetratingly extended into the inner cavity of the L-shaped plate, a reciprocating screw rod fixedly installed, a screw nut movably installed at the outer side of the reciprocating screw rod, a connecting plate B and a connecting plate A respectively fixedly installed at the top and the bottom of the middle of the screw nut, the front end of the L-shaped rod fixedly installed on the connecting plate B, a moving rod respectively fixedly installed at the left side of the connecting plate A and the connecting plate B, and a spreading block respectively fixedly installed at the left end of the moving rod and movably and penetratingly extended into the inner cavity of the finishing box.

[0010] Preferably, the middle of the left side of the reciprocating screw rod is fixedly installed with an active rod, the left end of the active rod is movably installed on the finishing box, a first single-groove wheel is fixedly sleeved on the output shaft of the active rod, a second single-groove wheel is arranged at the rear side near the right side of the L-shaped plate, the outer sides of the first single-groove wheel and the second single-groove wheel are jointly sleeved with a belt A, a through opening for the rotation of the belt A is formed near the left side of the L-shaped plate, a transmission rod is fixedly and penetratingly installed at the middle of the second single-groove wheel, a limiting plate is fixedly installed near the left side of the rear side of the finishing box, the left end of the transmission rod movably and penetratingly extended to the outer side of the limiting plate, a third single-groove wheel is fixedly sleeved on the output shaft of the transmission rod, a fourth single-groove wheel is arranged below the front side of the third single-groove wheel, and the outer sides of the third single-groove wheel and the fourth single-groove wheel are jointly sleeved with a belt B.

[0011] Preferably, the knocking assembly comprises pushing plates respectively arranged below the left side of the bottom of the screening plate, the left side of the pushing plate is slidingly installed on the finishing box, a buffer rod is slidingly and penetratingly installed near the front and rear sides of the pushing plate, a knocking ball is fixedly installed at the upper end of the buffer rod, and a cam is arranged below the middle of the bottom of the pushing plate.

[0012] Preferably, the left side of the cam is fixedly installed with rotating rods near the top, the left ends of the rotating rods are movably penetrated and extended to the outside of the refining box, the fourth single-groove wheel is fixedly sleeved on the rotating rod above, the output shaft of the rotating rod is fixedly sleeved with the fifth single-groove wheel and the sixth single-groove wheel, and the fifth single-groove wheel and the sixth single-groove wheel are jointly sleeved with the belt C outside.

[0013] Preferably, the outside of the buffer rod is sleeved with the reset spring A, and the upper and lower ends of the reset spring A are fixedly installed on the adjacent knocking ball and the pushing plate.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. Through the mutual cooperation between the L-shaped rod, the pushing block, the movable block, the side plate, the guide rod, the reset spring B, the rack plate, the movable gear and the U-shaped blanking frame, the U-shaped blanking frame can be driven to swing back and forth, so that the raw materials can swing back and forth, the swinging and blanking of the raw materials are realized, the raw materials can be dispersed on the screening plate, the raw materials can be better screened, through the mutual cooperation between the L-shaped plate, the driving motor, the reciprocating screw rod, the movable rod, the belt A, the transmission rod, the belt B, the screw nut, the connecting plate A, the connecting plate B, the moving rod and the flattening block, the flattening block can be driven to move back and forth on the screening plate, the dispersion of the falling raw materials is realized, the screening effect can be effectively improved, and the problem of low screening efficiency caused by the accumulation of the raw materials is avoided.

[0016] 2. Through the mutual cooperation between the pushing plate, the buffer rod, the knocking ball, the reset spring A, the cam, the rotating rod and the belt C, the knocking ball can be driven to continuously knock the screening plate back and forth, the screening effect can be accelerated through the vibration, the phenomenon of clogging during the screening is avoided, and the screening work can be better carried out. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall perspective view of the utility model;

[0018] Figure 2 It is the local right side view sectional perspective view of the utility model;

[0019] Figure 3 It is the local right side view sectional perspective view of the utility model;

[0020] Figure 4 It is the local expanded structure perspective view of the utility model;

[0021] Figure 5 It is the local sectional view expanded bottom perspective view of the utility model;

[0022] Figure 6It is a partial rear side view perspective drawing of the utility model;

[0023] Figure 7 It is a partial rear side view perspective drawing of the utility model;

[0024] Figure 8 It is a partial rear side view perspective drawing of the utility model; Figure 2 It is an enlarged view of A in the middle.

[0025] In the drawing: 1, refining box; 2, feed hopper; 3, movable door; 4, supporting leg; 5, spreading assembly; 51, L-shaped plate; 52, driving motor; 53, reciprocating screw rod; 531, movable rod; 532, belt A; 533, transmission rod; 534, belt B; 54, screw nut; 55, connecting plate A; 56, connecting plate B; 57, moving rod; 58, spreading block; 6, screening plate; 7, knocking assembly; 71, push plate; 72, buffer rod; 721, reset spring A; 73, knocking ball; 74, cam; 75, rotating rod; 76, belt C; 8, swinging assembly; 81, L-shaped rod; 82, push block; 83, movable block; 831, side plate; 832, guide rod; 833, reset spring B; 84, rack plate; 85, movable gear; 86, U-shaped blanking frame; 9, collecting groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Embodiment 1

[0028] Please refer to Figures 1-8 A kind of accurate high molecular polyethylene glycol drug carrier refining device, including refining box 1 and fixedly penetrating installation in the middle of the top of refining box 1 feed hopper 2, the front side of refining box 1 is movably installed with movable door 3, handle is fixedly installed at the front side of movable door 3 near right side, the bottom of refining box 1 is fixedly installed with supporting leg 4 near four corners respectively, spreading assembly 5 is installed at the right side of refining box 1 near middle part, and two screening plates 6 are fixedly installed at the inner chamber of refining box 1 near middle part, screening plate 6 is arranged in upper and lower, and knocking assembly 7 is jointly installed at the lower side of the bottom left side of screening plate 6, swinging assembly 8 is installed at the rear side of the right side of refining box 1, collecting groove 9 is attached to the inner chamber of refining box 1 near bottom, and the setting of spreading assembly 5 can realize raw material spreading, the setting of knocking assembly 7 can knock the bottom of screening plate 6, and the setting of swinging assembly 8 can realize the dispersion of material.

[0029] The swinging assembly 8 comprises an L-shaped rod 81 arranged at the right rear side of the refining box 1, and a pushing block 82 fixedly installed at the left end of the L-shaped rod 81. The left side of the pushing block 82 is provided with a movable block 83, and the top of the movable block 83 is fixedly installed with a rack plate 84. The front side of the rack plate 84 is slidingly installed on the refining box 1, and the top of the rack plate 84 is engaged with a movable gear 85. The movable gear 85 is fixedly penetrated and installed with a rotating shaft A at the middle part thereof. The front end of the rotating shaft A is movably penetrated and extended to the inner cavity of the refining box 1, and is fixedly installed with a U-shaped blanking frame 86. The middle part of the front side of the U-shaped blanking frame 86 is fixedly installed with a rotating shaft B. The front end of the rotating shaft B is movably installed on the inner wall of the inner cavity of the refining box 1, so as to facilitate the dispersion of the material and avoid the accumulation of the material, thereby affecting the rate of blanking.

[0030] The left side of the movable block 83 is provided with a side plate 831, and the front side of the side plate 831 is fixedly installed on the refining box 1. The right side of the side plate 831 is fixedly installed with guide rods 832 near the top and the bottom, respectively. The right ends of the guide rods 832 are movably penetrated and extended to the outer side of the movable block 83, respectively. The outer sides of the guide rods 832 are respectively sleeved with return springs B 833, and the two ends of the return springs B 833 are fixedly installed on the side plate 831 and the movable block 83, respectively, so as to facilitate the movement and recovery of the movable block 83.

[0031] The spreading assembly 5 comprises an L-shaped plate 51 fixedly installed at the right side of the refining box 1 near the middle part, and a driving motor 52 fixedly installed at the right side of the L-shaped plate 51. The output end of the driving motor 52 is movably penetrated and extended to the inner cavity of the L-shaped plate 51, and is fixedly installed with a reciprocating screw rod 53. The outer side of the reciprocating screw rod 53 is movably installed with a screw nut 54. The middle part of the top and the bottom of the screw nut 54 is fixedly installed with a connecting plate B 56 and a connecting plate A 55, respectively. The front end of the L-shaped rod 81 is fixedly installed on the connecting plate B 56. The left sides of the connecting plate A 55 and the connecting plate B 56 are respectively fixedly installed with moving rods 57. The left ends of the moving rods 57 are movably penetrated and extended to the inner cavity of the refining box 1, respectively, and are respectively fixedly installed with spreading blocks 58. The spreading blocks 58 can be driven to move back and forth, so as to facilitate the dispersion of the raw materials and improve the efficiency of screening.

[0032] The middle part of the left side of the reciprocating screw rod 53 is fixedly installed with a movable rod 531, the left end of the movable rod 531 is movably installed on the refining box 1, a first single-groove wheel is fixedly sleeved on the output shaft of the movable rod 531, a second single-groove wheel is arranged at the rear side near the right side of the L-shaped plate 51, the outer sides of the first single-groove wheel and the second single-groove wheel are jointly sleeved with a belt A 532, a through opening for the rotation of the belt A 532 is formed in the L-shaped plate 51 near the left side, a transmission rod 533 is fixedly and penetratively installed at the middle part of the second single-groove wheel, a limiting plate is fixedly installed at the left side near the rear side of the refining box 1, the left end of the transmission rod 533 movably penetrates and extends to the outer side of the limiting plate, a third single-groove wheel is fixedly sleeved on the output shaft of the transmission rod 533, a fourth single-groove wheel is arranged below the front side of the third single-groove wheel, and the outer sides of the third single-groove wheel and the fourth single-groove wheel are jointly sleeved with a belt B 534, which can provide power for the rotation of the cam 74.

[0033] In the embodiment: in use, the raw materials can be added to the refining box 1 through the feeding hopper 2, and before being added, the driving motor 52 can be operated, the driving motor 52 can drive the reciprocating screw rod 53 to rotate when being operated, the reciprocating screw rod 53 can drive the screw nut 54 to move back and forth left and right when rotating, the screw nut 54 can drive the moving rod 57 to move back and forth left and right through the connecting plate A 55 and the connecting plate B 56 when moving left and right, the moving rod 57 can drive the spreading block 58 to move back and forth left and right when moving left and right, which can achieve the spreading and dispersion of the materials falling on the screening plate 6, and is beneficial to the better development of the screening work, the reciprocating screw rod 53 can drive the movable rod 531 to rotate when rotating, the movable rod 531 can drive the transmission rod 533 to rotate through the belt A 532 when rotating, in addition, the connecting plate B 56 can drive the pushing block 82 to move left and right through the L-shaped rod 81 when moving left and right, the pushing block 82 can extrude the movable block 83 to move left when moving left, the movable block 83 can extrude the return spring B 833 and drive the rack plate 84 to move left when moving left, the rack plate 84 can drive the movable gear 85 to rotate when moving left, and the movable gear 85 can drive the U-shaped discharging frame 86 to swing back and forth left and right through the back-and-forth forward and reverse rotation, which can achieve the dispersed addition of the raw materials.

[0034] Embodiment 2

[0035] The embodiment is an improvement on the basis of embodiment 1, and the specific improvement will be described in detail in combination with Figure 1 and Figures 3-5The knocking assembly 7 comprises a pushing plate 71 arranged below the left side of the bottom of the screening plate 6, the left side of the pushing plate 71 is slidingly installed on the refining box 1 respectively, and the pushing plate 71 is slidingly penetratingly installed with a buffer rod 72 near the front and rear sides respectively, the upper end of the buffer rod 72 is fixedly installed with a knocking ball 73 respectively, and the bottom of the middle part of the pushing plate 71 is arranged with a cam 74 below, which can knock the bottom of the screening plate 6, and the generation of vibration can improve the screening efficiency.

[0036] The left side of the cam 74 is fixedly installed with a rotating rod 75 near the top, the left end of the rotating rod 75 is slidingly extended to the outside of the refining box 1 respectively, and the fourth single-groove wheel is fixedly sleeved on the rotating rod 75 above, the output shaft of the rotating rod 75 is fixedly sleeved with a fifth single-groove wheel and a sixth single-groove wheel respectively, and the outer sides of the fifth single-groove wheel and the sixth single-groove wheel are jointly sleeved with a belt C 76, which is beneficial to the continuous rotation of the cam 74 and provides power for the cam 74.

[0037] The outer side of the buffer rod 72 is sleeved with a return spring A 721 respectively, and the upper and lower ends of the return spring A 721 are fixedly installed on the adjacent knocking ball 73 and the pushing plate 71 respectively, which is beneficial to the buffering effect during knocking.

[0038] In this embodiment: when the transmission rod 533 rotates, it will drive the upper rotating rod 75 to rotate through the belt B 534, and then drive the upper and lower rotating rods 75 to rotate synchronously under the transmission of the belt C 76, the rotating rod 75 will drive the adjacent cam 74 to rotate when it rotates, and when the cam 74 rotates to contact the pushing plate 71, it will drive it to move upward, at this time, the knocking ball 73 can knock the bottom of the screening plate 6, and the return spring A 721 can play a buffering role during knocking, and when the cam 74 rotates away from the pushing plate 71, the pushing plate 71 will move downward under the action of its own gravity at this time, and since the cam 74 is rotating continuously, it will drive the knocking ball 73 to continuously knock the screening plate 6 back and forth, and through the generation of vibration, the screening efficiency can be improved, the impurities are left on the screening plate 6, and the raw materials fall through the screening plate 6 and are stored in the collecting groove 9, which is beneficial to the subsequent opening of the movable door 3 by the worker to take out the collecting groove 9 and clean the impurities.

[0039] Working principle: in use, the raw materials can be added into the refining box 1 through the feeding hopper 2, and the driving motor 52 can be operated before adding, the driving motor 52 can drive the reciprocating screw rod 53 to rotate when the driving motor 52 operates, the reciprocating screw rod 53 rotates and drives the screw nut 54 to move back and forth, the screw nut 54 moves back and forth and drives the connecting plate A 55 and the connecting plate B 56 to drive the moving rod 57 to move back and forth, the moving rod 57 moves back and forth and drives the spreading block 58 to move back and forth, which can realize the spreading and dispersion of the materials falling on the screening plate 6, which is beneficial to the better development of screening work, and the reciprocating screw rod 53 rotates and drives the movable rod 531 to rotate, the movable rod 531 rotates and drives the transmission rod 533 to rotate through the belt A 532, in addition, the connecting plate B 56 moves back and forth and drives the pushing block 82 to move back and forth through the L-shaped rod 81, when the pushing block 82 moves to the left, the movable block 83 is pressed to move to the left, and when the movable block 83 moves to the left, the reset spring B 833 is pressed, and at the same time, the rack plate 84 is also driven to move to the left, the rack plate 84 moves to the left and drives the movable gear 85 to rotate, and when the pushing block 82 moves to the right, the rack plate 84 is reset under the action of the reset spring B 833, thereby driving the movable gear 85 to rotate in the opposite direction, the movable gear 85 rotates back and forth in the opposite direction and drives the U-shaped feeding frame 86 to swing back and forth, realizing the dispersion of the raw materials, the transmission rod 533 rotates and drives the upper rotating rod 75 to rotate through the belt B 534, and then drives the upper and lower rotating rods 75 to rotate synchronously under the transmission of the belt C 76, the rotating rod 75 rotates and drives the adjacent cam 74 to rotate, when the cam 74 rotates to contact the pushing plate 71, it drives the pushing plate 71 to move upward, which drives the knocking ball 73 to knock the bottom of the screening plate 6, and the reset spring A 721 can play a buffering role in the knocking process, and when the cam 74 rotates away from the pushing plate 71, the pushing plate 71 moves downward to reset under the action of its own gravity, since the cam 74 is rotating all the time, it drives the knocking ball 73 to knock the screening plate 6 back and forth, through the generation of vibration, the screening efficiency can be improved, the impurities are left on the screening plate 6, and the raw materials fall into the collecting groove 9 for storage, which is convenient for workers to open the movable door 3 to take out the collecting groove 9 and clean the impurities.

[0040] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0041] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A precise high-molecular polyethylene glycol drug carrier refining device, comprising a refining box (1) and a feed hopper (2) fixedly installed through the top middle of the refining box (1), characterized in that: The front side of the refining box (1) is movably provided with a movable door (3), a handle is fixedly installed on the front side of the movable door (3) close to the right side, supporting legs (4) are fixedly installed on the bottom of the refining box (1) close to the four corners, respectively, a spreading assembly (5) is installed on the right side of the refining box (1) close to the middle, two screening plates (6) are fixedly installed in the inner cavity of the refining box (1) close to the middle, the screening plates (6) are arranged in an up-down mode, a knocking assembly (7) is jointly installed below the left side of the bottom of the screening plate (6), a swinging assembly (8) is installed on the rear side of the right side of the refining box (1), and a collecting groove (9) is attached to the inner cavity of the refining box (1) close to the bottom. The swinging assembly (8) comprises an L-shaped rod (81) arranged on the rear side of the right side of the refining box (1) and a pushing block (82) fixedly installed on the left end of the L-shaped rod (81), a movable block (83) is arranged on the left side of the pushing block (82), a rack plate (84) is fixedly installed on the top of the movable block (83), the front side of the rack plate (84) is slidably installed on the refining box (1), the top of the rack plate (84) is engaged with a movable gear (85), a rotating shaft A is fixedly and penetratively installed on the movable gear (85), the front end of the rotating shaft A is movably and penetratively extended into the inner cavity of the refining box (1), and a U-shaped blanking frame (86) is fixedly installed on the rotating shaft B, a rotating shaft B is fixedly installed on the middle of the front side of the U-shaped blanking frame (86), and the front end of the rotating shaft B is movably installed on the inner wall of the inner cavity of the refining box (1).

2. The device for refining a precise high-molecular polyethylene glycol drug carrier according to claim 1, characterized in that: The left side of the movable block (83) is provided with a side plate (831), and the front side of the side plate (831) is fixedly installed on the refining box (1), guide rods (832) are fixedly installed on the right side of the side plate (831) close to the top and the bottom, respectively, the right ends of the guide rods (832) are movably and penetratively extended to the outer side of the movable block (83), respectively, reset springs B (833) are sleeved on the outer sides of the guide rods (832), respectively, and the two ends of the reset springs B (833) are fixedly installed on the side plate (831) and the movable block (83), respectively.

3. The device for refining a precise high-molecular polyethylene glycol drug carrier according to claim 1, characterized in that: The spreading assembly (5) comprises an L-shaped plate (51) fixedly installed on the right side of the refining box (1) close to the middle and a driving motor (52) fixedly installed on the right side of the L-shaped plate (51), the output end of the driving motor (52) is movably and penetratively extended into the inner cavity of the L-shaped plate (51), and a reciprocating screw rod (53) is fixedly installed thereon, a screw nut (54) is movably installed on the outer side of the reciprocating screw rod (53), a connecting plate B (56) and a connecting plate A (55) are fixedly installed on the top and the bottom of the screw nut (54), respectively, the front end of the L-shaped rod (81) is fixedly installed on the connecting plate B (56), moving rods (57) are fixedly installed on the left sides of the connecting plate A (55) and the connecting plate B (56), respectively, and flatter blocks (58) are fixedly installed on the left ends of the moving rods (57), respectively.

4. The device for refining a precise high-molecular polyethylene glycol drug carrier according to claim 3, characterized in that: The reciprocating wire rod (53) is fixedly installed with a movable rod (531) at the middle of the left side, and the left end of the movable rod (531) is movably installed on the refining box (1). A first single-groove wheel is fixedly sleeved on the output shaft of the movable rod (531), and a second single-groove wheel is arranged on the rear side of the L-shaped plate (51) near the right side. A belt A (532) is jointly sleeved on the outer sides of the first single-groove wheel and the second single-groove wheel. An opening is formed in the L-shaped plate (51) near the left side for the rotation of the belt A (532). A transmission rod (533) is fixedly and penetratively installed at the middle of the second single-groove wheel. A limiting plate is fixedly installed on the rear side of the refining box (1) near the left side. The left end of the transmission rod (533) movably penetrates and extends to the outer side of the limiting plate. A third single-groove wheel is fixedly sleeved on the output shaft of the transmission rod (533). A fourth single-groove wheel is arranged below the front side of the third single-groove wheel. A belt B (534) is jointly sleeved on the outer sides of the third single-groove wheel and the fourth single-groove wheel.

5. The precise polymer polyethylene glycol drug carrier refining device according to claim 1, characterized in that: The knocking assembly (7) comprises a pushing plate (71) arranged below the left side of the bottom of the screening plate (6). The left side of the pushing plate (71) is slidably installed on the refining box (1). Buffer rods (72) are slidably and penetratively installed on the pushing plate (71) near the front and rear sides. Knocking balls (73) are fixedly installed on the upper ends of the buffer rods (72). Camshafts (74) are arranged below the middle of the bottom of the pushing plate (71).

6. The precise polymer polyethylene glycol drug carrier refining device according to claim 5, characterized in that: Rotating rods (75) are fixedly installed on the left side of the camshafts (74) near the top. The left ends of the rotating rods (75) movably penetrate and extend to the outer side of the refining box (1). A fourth single-groove wheel is fixedly sleeved on the upper rotating rod (75). Fifth single-groove wheels and sixth single-groove wheels are fixedly sleeved on the output shafts of the rotating rods (75). A belt C (76) is jointly sleeved on the outer sides of the fifth single-groove wheels and the sixth single-groove wheels.

7. The precise polymer polyethylene glycol drug carrier refining device according to claim 5, characterized in that: Reset springs A (721) are sleeved on the outer sides of the buffer rods (72). The upper and lower ends of the reset springs A (721) are fixedly installed on the adjacent knocking balls (73) and the pushing plate (71).

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