A crushing and screening integrated device for drug processing

Abstract

The present invention relates to the field of pharmaceutical processing technology, and in particular to a crushing and screening integrated device for pharmaceutical processing, comprising an outer cylinder and a feed hopper arranged at one end thereof, wherein the inner side of the outer cylinder is rotatably connected to a central axis, the outer side of the central axis is rotatably sleeved with a rotating cylinder, the outer side of the rotating cylinder is fixed with threaded blades, one end of the central axis is fixed with a rotating shell, and the side of the rotating shell is slidably inserted with a plurality of rotating arms. The present invention drives the central axis and the rotating cylinder to rotate in the opposite direction through a driving mechanism, the central axis drives a plurality of push plates to rotate, and the rotating cylinder drives the threaded blades on its outer side to rotate in the opposite direction, so that the pharmaceutical raw materials in the outer cylinder can be squeezed toward one side of the end cover, and at the same time, the push plate pushes the pharmaceutical raw materials to rotate, and when the pharmaceutical raw materials rotate, they will be gradually cut when rubbing against the cutting blade, and the pharmaceutical raw materials will be cut and crushed into small particles, thereby improving the uniformity of the particles after the pharmaceutical raw materials are crushed, and preventing the generation of particles that are too large or too small.

Description

Technical Field

[0001] The invention relates to the technical field of pharmaceutical processing, and in particular to an integrated crushing and screening device for pharmaceutical processing. Background Art

[0002] In the pharmaceutical process, the drug raw materials need to be crushed and then the crushed drugs are screened to obtain drug particles of different sizes.

[0003] After searching, a Chinese patent with announcement number: CN117772388B discloses an integrated crushing and screening machine for pharmaceutical processing, including a device box, a first inclined plate is fixed to the inner cavity of the device box, a plurality of crushing rollers are rotatably installed on the top surface of the inner cavity of the device box, a driving motor for driving the plurality of crushing rollers to rotate is fixed to the front end of the device box, a second inclined plate is also provided in the inner cavity of the device box below the two crushing rollers, and an adjustable screening device is also provided in the inner cavity of the device box.

[0004] Based on the above search and combined with actual problems, it was found that the existing drug crushing devices usually crush the drug raw materials through multiple crushing rollers. Since there is a certain gap between the teeth on the surface of the crushing rollers, the size difference of the drug particles produced after crushing is too large and the uniformity is low. Some drugs are crushed into powder, and some drugs form larger particles. It is difficult to obtain drug particles with similar particle sizes through screening, which is not ideal in actual use. Summary of the invention

[0005] The object of the present invention is to provide an integrated crushing and screening device for pharmaceutical processing to solve the problems raised in the above-mentioned background technology.

[0006] The technical solution of the present invention is: a crushing and screening integrated device for pharmaceutical processing, comprising an outer cylinder and a feed hopper arranged at one end thereof, the inner side of the outer cylinder is rotatably connected to a central shaft, the outer side of the central shaft is rotatably sleeved with a rotating cylinder, the outer side of the rotating cylinder is fixed with threaded blades, a rotating shell is fixed at one end of the central shaft, a plurality of rotating arms are slidably inserted at the side of the rotating shell, a push plate is installed on one side of each of the rotating arms, an end cover is installed at one end of the outer cylinder, a plurality of screening holes are opened inside the end cover, and a cutting blade is fixed on the inner side of the end cover at the position of each screening hole; a driving mechanism is arranged between the central shaft, the rotating cylinder and the outer cylinder; an anti-blocking mechanism is arranged between the rotating shell and the end cover; a screening mechanism is arranged on the outer side of the end cover.

[0007] Preferably, the anti-blocking mechanism includes a fixed shell fixed at the center position on the inner side of the end cover and an extension shaft fixed at the center position on the inner side of the rotating shell, the inner end of the fixed shell is rotatably connected to a rotating block, a plurality of extension arms are fixed to the outer side of the rotating block, a plurality of dredging arms are fixed to one side of each of the extension arms, a first lever is fixed at an edge position at one end of the rotating block, the extension shaft movably extends to the inner side of the fixed shell, and two second levers that can contact the first lever are symmetrically fixed at two sides of one end of the extension shaft, and each of the dredging arms is aligned with each screening hole respectively.

[0008] Preferably, a plurality of shifting blocks are fixed on the outer side of the rotating block, and a spring sheet is elastically connected to the inner side of the fixed shell at a position corresponding to each shifting block, and one end of each spring sheet is fitted with one side of the shifting block at the corresponding position.

[0009] Preferably, a sliding pin is rotatably connected to one side of the lower end of each rotating arm, and a guide groove and an inwardly concave arc groove having the same number as the sliding pin are opened at one end of the outer side of the fixed shell, and adjacent guide grooves and inwardly concave arc grooves are smoothly connected, and each sliding pin is slidably connected to the inner side of the guide groove and the inwardly concave arc groove.

[0010] Preferably, the screening mechanism includes a discharge motor installed at a central position on the outside of the end cover, a discharge pipe bracket is fixed to the driving end of the discharge motor, a first discharge pipe, a second discharge pipe, and a third discharge pipe are concentrically fixed to the outside of the discharge pipe bracket, and a plurality of guide plates are fixed to the inner sides of the first discharge pipe, the second discharge pipe, and the third discharge pipe.

[0011] Preferably, the first discharge pipe is located outside the multiple sieve holes of the outermost circle, the third discharge pipe is located outside the multiple sieve holes of the innermost circle, and the second discharge pipe is located outside the multiple sieve holes of the middle circle.

[0012] Preferably, the diameters of the plurality of sieve holes decrease sequentially from the outer circle of the end cover to the center of the circle.

[0013] Preferably, the plurality of cutting blades are all in a quarter spherical structure, and the edge of each cutting blade is chamfered.

[0014] Preferably, a plurality of fins are fixed on one side of each push plate in the rotation direction.

[0015] Preferably, the driving mechanism includes a main motor installed at one end of the outer side of the outer cylinder, a second driven bevel gear and a first driven bevel gear fixed to the center shaft and one end of the rotating cylinder, and a driving bevel gear is fixed to the driving end of the main motor, and the driving bevel gear is meshed with the first driven bevel gear and the second driven bevel gear through teeth.

[0016] The present invention provides an integrated crushing and screening device for pharmaceutical processing by improvement, which has the following improvements and advantages compared with the prior art:

[0017] First, the present invention drives the central shaft and the rotating drum to rotate in opposite directions through a driving mechanism, the central shaft drives a plurality of push plates to rotate, and the rotating drum drives the threaded blades on its outer side to rotate in opposite directions, so that the pharmaceutical raw materials in the outer drum can be squeezed toward the end cover. At the same time, the push plates push the pharmaceutical raw materials to rotate. When the pharmaceutical raw materials rotate, they will be gradually cut when rubbing against the cutting blades, and the pharmaceutical raw materials will be cut and crushed into small particles, thereby improving the uniformity of the particles after the pharmaceutical raw materials are crushed, preventing the generation of overly large or undersized particles, and improving the crushing quality.

[0018] Secondly, the present invention sets a plurality of screening holes, and the diameters of the plurality of screening holes decrease successively from the outer circle of the end cover to the center of the circle. Therefore, the cutting blades located on the side of different diameters can cut and crush the pharmaceutical raw materials into particles of different sizes. The larger pharmaceutical particles are discharged through the screening holes of the outer circle, and the smaller pharmaceutical particles are discharged through the screening holes of the inner circle. Thus, the pharmaceutical raw materials can be crushed into pharmaceutical particles of different sizes at the same time, and the pharmaceutical particles of different sizes can be screened, thereby improving the crushing and screening efficiency. At the same time, the screening effect is more refined, and the uniformity of the screened pharmaceutical particles is higher, which further improves the crushing and screening quality of the pharmaceutical raw materials.

[0019] Thirdly, the present invention can push the drug particles blocked on the inner side of the screening hole to the outer side of the end cover through the anti-blocking mechanism, thereby playing an anti-blocking role and keeping each screening hole in a through state at all times, thereby ensuring that the cut and crushed drug particles can be discharged smoothly, and at the same time also improving the consistency of the size of the cut and crushed drug particles.

[0020] Fourthly, by providing guide grooves and inwardly concave arc grooves, the present invention can drive the rotating arms and the push plate to reciprocate along the diameter direction of the rotating shell while the rotating shell drives the multiple rotating arms to rotate. Each push plate drives the multiple fins on one side to reciprocate. The reciprocating movement of the multiple fins can displace the pharmaceutical raw materials close to the end cover, so that the pharmaceutical raw materials in various places can be evenly cut and crushed by the multiple cutting blades, further improving the crushing uniformity of the pharmaceutical particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a first cross-sectional structural schematic diagram of the present invention;

[0024] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 4 It is a second cross-sectional structural schematic diagram of the present invention;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0027] Figure 6 It is a third cross-sectional structural schematic diagram of the present invention;

[0028] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at C in the middle;

[0029] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at D in the middle;

[0030] Fig. 9 It is a schematic diagram of the disassembled structure of the end cover in the present invention;

[0031] Fig.10 It is a schematic diagram of the disassembled structure of the fixed shell in the present invention;

[0032] Fig.11 It is a schematic diagram of the disassembled structure of the anti-blocking mechanism in the present invention.

[0033] Reference numerals:

[0034] 1. Outer cylinder; 2. Feed hopper; 3. Central axis; 4. Rotating cylinder; 5. Threaded blades; 6. Rotating shell; 7. Rotating arm; 8. Push plate; 9. End cover; 10. Screening hole; 11. Cutting blade; 12. Main motor; 13. Active bevel gear; 14. First driven bevel gear; 15. Second driven bevel gear; 16. Fin; 101. Sliding pin; 102. Fixed shell; 103. Guide groove; 104. Inward concave arc groove; 201. Rotating block; 202. Extension arm; 203. Dredging arm; 204. First shifting rod; 205. Second shifting rod; 206. Extension shaft; 207. Shifting block; 208. Shrapnel; 301. First discharge pipe; 302. Second discharge pipe; 303. Third discharge pipe; 304. Discharge motor; 305. Discharge pipe bracket; 306. Guide plate. DETAILED DESCRIPTION

[0035] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. 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.

[0036] The present invention provides an integrated crushing and screening device for drug processing through improvement. The technical solution of the present invention is:

[0037] like Figures 1 to 11 As shown, the embodiment of the present invention provides an integrated pulverizing and screening device for drug processing, comprising an outer cylinder 1 and a feed hopper 2 arranged at one end thereof, the inner side of the outer cylinder 1 is rotatably connected to a central shaft 3, the outer side of the central shaft 3 is rotatably sleeved with a rotating cylinder 4, the outer side of the rotating cylinder 4 is fixed with threaded blades 5, one end of the central shaft 3 is fixed with a rotating shell 6, and the side edge of the rotating shell 6 is slidably inserted with a plurality of rotating arms 7 (such as Figure 5 As shown in the figure, a push plate 8 is installed on one side of each rotating arm 7, an end cover 9 is installed on one end of the outer cylinder 1, a plurality of screening holes 10 are opened inside the end cover 9, and a cutting blade 11 is fixed on the inner side of the end cover 9 at the position of each screening hole 10; a driving mechanism is arranged between the central shaft 3, the rotating cylinder 4 and the outer cylinder 1; an anti-blocking mechanism is arranged between the rotating shell 6 and the end cover 9; a screening mechanism is arranged on the outer side of the end cover 9, and a plurality of fins 16 are fixed on the side of each push plate 8 located in the rotating direction.

[0038] Furthermore, the anti-blocking mechanism includes a fixed shell 102 fixed at the center of the inner side of the end cover 9 and an extension shaft 206 fixed at the center of the inner side of the rotating shell 6. One end of the inner side of the fixed shell 102 is rotatably connected to a rotating block 201 (such as Figure 8 As shown in the figure, a plurality of extension arms 202 are fixed to the outside of the rotating block 201, and a plurality of dredging arms 203 are fixed to one side of each extension arm 202. A first lever 204 is fixed to one end of the rotating block 201 at the edge, and an extension shaft 206 is movably extended to the inside of the fixed shell 102, and two second levers 205 that can contact the first lever 204 are symmetrically fixed to one end of the extension shaft 206 at both sides, and each dredging arm 203 is aligned with each screening hole 10 respectively;

[0039] The anti-blocking mechanism can push the drug particles blocked on the inner side of the sieve hole 10 to the outer side of the end cover 9, thereby playing an anti-blocking role and keeping each sieve hole 10 always in a through state, thereby ensuring that the cut and crushed drug particles can be discharged smoothly, and also improving the consistency of the size of the cut and crushed drug particles.

[0040] Furthermore, a plurality of shifting blocks 207 are fixed to the outer side of the rotating block 201, and a spring piece 208 is elastically connected to the inner side of the fixed shell 102 at a position corresponding to each shifting block 207, and one end of each spring piece 208 is in contact with one side of the shifting block 207 at the corresponding position;

[0041] As the second lever 205 continuously pushes the first lever 204, the rotating block 201 is driven to rotate, thereby driving the extension arm 202 and the dredging support arm 203 to rotate and insert into the inner side of the screening hole 10. When the second lever 205 pushes the first lever 204 and separates, the elastic force of multiple spring pieces 208 can push the rotating block 201 to rotate in the opposite direction and reset through the lever block 207.

[0042] Furthermore, a sliding pin 101 is rotatably connected to one side of the lower end of each rotating arm 7, and a guide groove 103 and an inner concave arc groove 104 (such as Fig.10 As shown), the adjacent guide grooves 103 and the concave arc grooves 104 are smoothly connected, and each sliding pin 101 is slidably connected to the inner side of the guide groove 103 and the concave arc groove 104;

[0043] Under the guiding action of the guide groove 103 and the concave arc groove 104, as the rotating shell 6 drives the multiple rotating arms 7 to rotate continuously, the rotating arms 7 and the push plate 8 can be driven to reciprocate along the radial direction of the rotating shell 6, and the push plate 8 drives the multiple fins 16 on one side thereof to reciprocate. The reciprocating movement of the multiple fins 16 can displace the pharmaceutical raw materials close to the end cover 9, so that the pharmaceutical raw materials in various places can be evenly cut and crushed by the multiple cutting blades 11, further improving the crushing uniformity of the pharmaceutical particles.

[0044] Furthermore, the screening mechanism includes a discharge motor 304 installed at the center of the outer side of the end cover 9, a discharge pipe bracket 305 is fixed to the driving end of the discharge motor 304, a first discharge pipe 301, a second discharge pipe 302, and a third discharge pipe 303 are fixed to the outer side of the discharge pipe bracket 305, and a plurality of guide plates 306 are fixed to the inner sides of the first discharge pipe 301, the second discharge pipe 302, and the third discharge pipe 303;

[0045] The operation of the discharge motor 304 drives the discharge pipe bracket 305 to rotate, and the discharge pipe bracket 305 drives the first discharge pipe 301, the second discharge pipe 302, and the third discharge pipe 303 to rotate synchronously. Since the inner sides of the first discharge pipe 301, the second discharge pipe 302, and the third discharge pipe 303 are all provided with multiple guide plates 306, the rotation of the three can drive the multiple guide plates 306 to rotate. The rotation of the guide plates 306 can transport the pharmaceutical particles of different sizes sieved out from the inner sides of the first discharge pipe 301, the second discharge pipe 302, and the third discharge pipe 303 to the outside, which has the effect of classifying and discharging pharmaceutical particles of different sizes, further improving the screening efficiency of pharmaceutical particles, and can avoid pharmaceutical particles of different sizes from mixing together, further improving the screening uniformity.

[0046] Further, the first discharge pipe 301 is located outside the multiple sieve holes 10 of the outermost circle, the third discharge pipe 303 is located outside the multiple sieve holes 10 of the innermost circle, and the second discharge pipe 302 is located outside the multiple sieve holes 10 of the middle circle;

[0047] The pharmaceutical particles discharged through the outer ring sieve holes 10 are introduced into the inner side of the first discharge pipe 301, the pharmaceutical particles discharged through the inner ring sieve holes 10 are introduced into the inner side of the third discharge pipe 303, and the pharmaceutical particles discharged through the sieve holes 10 of the middle ring layer are introduced into the inner side of the second discharge pipe 302, so as to achieve the classification of pharmaceutical particles of different sizes produced by crushing for discharge.

[0048] Furthermore, the diameters of the plurality of sieve holes 10 decrease in sequence from the outer circle of the end cover 9 to the center of the circle;

[0049] The cutting blades 11 located on the side with different diameters can cut and crush the pharmaceutical raw materials into particles of different sizes. The larger pharmaceutical particles are discharged through the screening holes 10 of the outer circle, and the smaller pharmaceutical particles are discharged through the screening holes 10 of the inner circle. In this way, the pharmaceutical raw materials can be crushed into pharmaceutical particles of different sizes at the same time, and the pharmaceutical particles of different sizes can be screened, thereby improving the crushing and screening efficiency, and at the same time the screening effect is finer, and the uniformity of the screened pharmaceutical particles is higher.

[0050] Furthermore, the plurality of cutting blades 11 are all in a quarter spherical structure, and the edge of each cutting blade 11 is polished with a chamfer;

[0051] Chamfering can cut and crush the pharmaceutical raw materials more evenly, further improving the crushing uniformity of the pharmaceutical raw materials and avoiding excessive differences in the particle size of the crushed pharmaceutical materials.

[0052] Further, the driving mechanism includes a main motor 12 installed at one end of the outer side of the outer cylinder 1, a second driven bevel gear 15 and a first driven bevel gear 14 fixed to the central shaft 3 and one end of the rotating cylinder 4, and a driving bevel gear 13 is fixed to the driving end of the main motor 12, and the driving bevel gear 13 is meshed with the first driven bevel gear 14 and the second driven bevel gear 15 through teeth;

[0053] Start the main motor 12 of the driving mechanism, the main motor 12 drives the active bevel gear 13 to rotate, the active bevel gear 13 drives the first driven bevel gear 14 and the second driven bevel gear 15 to rotate in the opposite direction through the teeth, the first driven bevel gear 14 and the second driven bevel gear 15 respectively drive the rotating drum 4 and the central shaft 3 to rotate in the opposite direction, the rotating drum 4 drives the threaded blades 5 on its outer side to rotate, the rotation of the threaded blades 5 can push the pharmaceutical raw materials put into the inner side of the outer cylinder 1 to the end close to the end cover 9, and at the same time the central shaft 3 drives the rotating shell 6 at its end to rotate, the rotating shell 6 drives the multiple rotating arms 7 and the push plates 8 on its side to rotate, when the pharmaceutical raw materials are pushed to the position close to the end cover 9 by the threaded blades 5, the multiple push plates 8 rotate to drive the pharmaceutical raw materials to rotate, so that the pharmaceutical raw materials are in contact with the cutting blades 11 and are cut and crushed, so as to realize the synchronous crushing and screening and improve the work efficiency.

[0054] Working principle: When in use, the pharmaceutical raw materials are put into the inner side of the outer cylinder 1 through the feed hopper 2, and the main motor 12 of the driving mechanism is started. The main motor 12 drives the active bevel gear 13 to rotate, and the active bevel gear 13 drives the first driven bevel gear 14 and the second driven bevel gear 15 to rotate in the opposite direction through the teeth. The first driven bevel gear 14 and the second driven bevel gear 15 respectively drive the rotating drum 4 and the central axis 3 to rotate in the opposite direction, and the rotating drum 4 drives the threaded blades 5 on its outer side to rotate. The rotation of the threaded blades 5 can push the pharmaceutical raw materials put into the inner side of the outer cylinder 1 to the end close to the end cover 9. At the same time, the central axis 3 drives the rotating shell 6 at its end to rotate, and the rotating shell 6 drives the multiple rotating arms 7 and push plates 8 on its side to rotate. When the pharmaceutical raw materials are pushed to a position close to the end cover 9 by the threaded blades 5, the multiple push plates 8 rotate to push the pharmaceutical raw materials to rotate. At the same time, the rotating drum 4 and the threaded blades 5 continue to rotate to continue to push the pharmaceutical raw materials put in later, and at the same time, they can push the pharmaceutical raw materials close to the end cover 9 applies a certain pressure to the pharmaceutical raw materials, so that the pharmaceutical raw materials are close to the inner side of the end cover 9. When the pharmaceutical raw materials rotate, the pharmaceutical raw materials close to the inner surface of the end cover 9 will rub against the side edges of multiple cutting blades 11. Since the edges of the cutting blades 11 are all chamfered, the pharmaceutical raw materials will be gradually cut when rubbing against the cutting blades 11, and the pharmaceutical raw materials will be cut and crushed into small particles. The cut pharmaceutical particles are discharged to the outside of the end cover 9 through the sieve holes 10 at the corresponding positions. In this process, the central axis 3 and the rotating drum 4 rotate in the opposite direction at a constant speed, thereby driving multiple push plates 8 and threaded blades 5 to rotate in the opposite direction at a constant speed. The threaded blades 5 keep rotating, and always apply a thrust pointing to the end cover 9 to the pharmaceutical raw materials on the inner side of the outer cylinder 1, so that the pharmaceutical raw materials are always squeezed on the inner side of the end cover 9, so that the pharmaceutical raw materials are subjected to a constant cutting force, ensuring the uniformity of the particles after the pharmaceutical raw materials are crushed, preventing the generation of particles that are too large or too small, and improving the crushing quality;

[0055] Since the diameters of the plurality of sieve holes 10 decrease in sequence from the outer circle of the end cover 9 to the center of the circle, the cutting blades 11 located on the side of different diameters can cut and crush the pharmaceutical raw materials into particles of different sizes, and the larger pharmaceutical particles are discharged through the sieve holes 10 of the outer circle, and the smaller pharmaceutical particles are discharged through the sieve holes 10 of the inner circle, so that the pharmaceutical raw materials can be crushed into pharmaceutical particles of different sizes at the same time, and the pharmaceutical particles of different sizes can be screened, thereby improving the crushing and screening efficiency, and at the same time the screening effect is finer, and the uniformity of the screened pharmaceutical particles is higher, further improving the crushing and screening quality of the pharmaceutical raw materials;

[0056] The drug particles discharged through the sieve holes 10 of the outer ring enter the inner side of the first discharge pipe 301, the drug particles discharged through the sieve holes 10 of the middle ring enter the second discharge pipe 302, and the drug particles discharged through the sieve holes 10 of the inner ring enter the inner side of the third discharge pipe 303. At the same time, the discharge motor 304 drives the discharge pipe bracket 305 to rotate, and the discharge pipe bracket 305 drives the first discharge pipe 301, the second discharge pipe 302, and the third discharge pipe 303 to rotate synchronously. A plurality of guide plates 306 are arranged on the inner sides of the first discharge pipe 301, the second discharge pipe 302 and the third discharge pipe 303, so when the three are rotated, the plurality of guide plates 306 can be driven to rotate. The guide plates 306 can rotate to transport the drug particles of different sizes screened out from the inner sides of the first discharge pipe 301, the second discharge pipe 302 and the third discharge pipe 303 to the outside, achieving the effect of classifying and discharging drug particles of different sizes, further improving the screening efficiency of drug particles, and avoiding drug particles of different sizes from being mixed together, further improving the screening uniformity;

[0057] When the central shaft 3 drives the rotating shell 6 to rotate, the rotating shell 6 not only drives the multiple rotating arms 7 and the push plate 8 to rotate, but also drives the extension shaft 206 of the anti-blocking mechanism to rotate. The extension shaft 206 drives the two second levers 205 to rotate. Each time the two second levers 205 rotate one circle, they will push the first lever 204 once. Therefore, when the extension shaft 206 drives the two second levers 205 to rotate one circle, it can push the first lever 204 twice. Each time the first lever 204 is pushed once, it can drive the rotating block 201 to rotate an angle in the direction of the dredging arm 203. Therefore, the rotating block 201 drives the multiple extension arms 202 to rotate by the same angle. Each extension arm 202 drives the multiple dredging arms 203 on one side to rotate synchronously by a certain angle. When the second lever 205 is in motion, it can be inserted into the inner side of each sieve hole 10 and the cutting blade 11 at the corresponding position, and the drug particles blocked in the inner side of the sieve hole 10 can be pushed to the outer side of the end cover 9, which plays an anti-blocking role and keeps each sieve hole 10 in a through state at all times, thereby ensuring that the cut and crushed drug particles can be discharged smoothly, and at the same time, the consistency of the size of the drug particles after cutting and crushing is also improved. As the second lever 205 continuously pushes the first lever 204, the rotating block 201 is driven to rotate, thereby driving the extension arm 202 and the dredging support arm 203 to rotate and insert into the inner side of the sieve hole 10. When the second lever 205 pushes the first lever 204 and then separates, at this time, under the elastic force of multiple spring pieces 208, the rotating block 201 can be pushed to rotate in the opposite direction and reset through the lever block 207;

[0058] When the rotating shell 6 drives each rotating arm 7 and the push plate 8 to rotate, the sliding pin 101 at the lower end of each rotating arm 7 will slide cyclically inside the multiple guide grooves 103 and the inner side of the concave arc groove 104. When the sliding pin 101 slides from the inner side of the guide groove 103 into the inner side of the concave arc groove 104, under the guidance of the concave arc groove 104, the rotating arm 7 can be driven by the sliding pin 101 to move toward the center direction of the rotating shell 6. When the sliding pin 101 slides from the concave arc groove 104 into the inner side of the guide groove 103, The sliding pin 101 will drive the rotating arm 7 to move toward the edge of the rotating shell 6. As the rotating shell 6 drives the multiple rotating arms 7 to rotate continuously, the rotating arm 7 and the push plate 8 can be driven to reciprocate along the radial direction of the rotating shell 6. The push plate 8 drives the multiple fins 16 on one side to reciprocate. The reciprocating movement of the multiple fins 16 can displace the pharmaceutical raw materials close to the end cover 9, so that the pharmaceutical raw materials in various places can be evenly cut and crushed by the multiple cutting blades 11, further improving the crushing uniformity of the pharmaceutical particles.

[0059] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pulverizing and screening integrated device for pharmaceutical processing, comprising an outer cylinder (1) and a feed hopper (2) arranged at one end thereof, characterized in that: The inner side of the outer cylinder (1) is rotatably connected to a central shaft (3), the outer side of the central shaft (3) is rotatably sleeved with a rotating cylinder (4), the outer side of the rotating cylinder (4) is fixed with a threaded blade (5), one end of the central shaft (3) is fixed with a rotating shell (6), a plurality of rotating arms (7) are slidably inserted at the side of the rotating shell (6), one side of each of the rotating arms (7) is mounted with a push plate (8), one end of the outer cylinder (1) is mounted with an end cover (9), a plurality of sieving holes (10) are opened inside the end cover (9), and a cutting blade (11) is fixed on the inner side of the end cover (9) at the position of each sieving hole (10); A driving mechanism is provided between the central shaft (3), the rotating cylinder (4) and the outer cylinder (1); An anti-blocking mechanism is provided between the rotating shell (6) and the end cover (9); A screening mechanism is provided on the outer side of the end cover (9); The anti-blocking mechanism comprises a fixed shell (102) fixed at a central position on the inner side of the end cover (9) and an extension shaft (206) fixed at a central position on the inner side of the rotating shell (6); one end of the inner side of the fixed shell (102) is rotatably connected to a rotating block (201); a plurality of extension arms (202) are fixed on the outer side of the rotating block (201); a plurality of dredging arms (203) are fixed on one side of each of the extension arms (202); a first lever (204) is fixed at an edge position on one end of the rotating block (201); the extension shaft (206) movably extends to the inner side of the fixed shell (102); and two second levers (205) that can contact the first lever (204) are symmetrically fixed at two sides of one end of the extension shaft (206); and each of the dredging arms (203) is aligned with each screening hole (10) respectively; A plurality of shifting blocks (207) are fixed on the outer side of the rotating block (201), and a spring sheet (208) is elastically connected to the inner side of the fixed shell (102) at a position corresponding to each shifting block (207), and one end of each spring sheet (208) is in contact with one side of the shifting block (207) at the corresponding position; A sliding pin (101) is rotatably connected to one side of the lower end of each rotating arm (7); a guide groove (103) and an inwardly concave arc groove (104) having the same number as the sliding pin (101) are provided at one end of the outer side of the fixed shell (102); adjacent guide grooves (103) and inwardly concave arc grooves (104) are smoothly connected; and each sliding pin (101) is slidably connected to the inner side of the guide groove (103) and the inwardly concave arc groove (104); The screening mechanism comprises a discharge motor (304) mounted at a central position outside the end cover (9); a discharge pipe bracket (305) is fixed to the driving end of the discharge motor (304); a first discharge pipe (301), a second discharge pipe (302), and a third discharge pipe (303) are fixed to the outside of the discharge pipe bracket (305) in a concentric arrangement; and a plurality of guide plates (306) are fixed to the inside of the first discharge pipe (301), the second discharge pipe (302), and the third discharge pipe (303); The first discharge pipe (301) is located outside the multiple sieve holes (10) in the outermost circle, the third discharge pipe (303) is located outside the multiple sieve holes (10) in the innermost circle, and the second discharge pipe (302) is located outside the multiple sieve holes (10) in the middle circle; The diameters of the plurality of sieve holes (10) decrease in sequence from the outer circle of the end cover (9) to the center of the circle.

2. The integrated crushing and screening device for pharmaceutical processing according to claim 1, characterized in that: The plurality of cutting blades (11) are all in a quarter spherical structure, and the edge of each cutting blade (11) is polished with a chamfer.

3. The integrated crushing and screening device for pharmaceutical processing according to claim 1, characterized in that: A plurality of fins (16) are fixed to one side of each push plate (8) located in the rotation direction.

4. The integrated crushing and screening device for pharmaceutical processing according to claim 1, characterized in that: The driving mechanism comprises a main motor (12) mounted on one end of the outer side of the outer cylinder (1), a second driven bevel gear (15) and a first driven bevel gear (14) fixed to the central shaft (3) and one end of the rotating cylinder (4), a driving bevel gear (13) being fixed to the driving end of the main motor (12), and the driving bevel gear (13) being meshed with the first driven bevel gear (14) and the second driven bevel gear (15) through teeth.

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