A medicine grinder

Abstract

The utility model provides a kind of medicine pulverization grinder.Pertains to medical instrument technical field.The medicine pulverization grinder includes grinding sleeve, the top of the grinding sleeve is equipped with broken cutting sleeve, two are adhered, the top and bottom of broken cutting sleeve, the top and bottom of grinding sleeve are all equipped as opening, the bottom of the grinding sleeve is equipped with receiving round box with thread, the inner wall of broken cutting sleeve is fixedly installed with broken cutting surrounding sleeve, the upper half of the inner wall of broken cutting surrounding sleeve is equipped as taper face, the inner wall of broken cutting sleeve is equipped with cover with thread, the top of the cover extends to the upper of broken cutting sleeve, the cover is equipped with mounting disc, the bottom of the mounting disc is fixedly installed with multiple pounding pestles, multiple pounding pestles are all adapted with the inner wall of broken cutting surrounding sleeve.The utility model has the advantages of high grinding efficiency, uniform particle size, and can avoid medicine powder pollution and tablet waste.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a drug pulverizer / grinder. Background Technology

[0002] In medical care, it is often necessary to grind solid medicines such as tablets into fine particles or powders so that patients with difficulty swallowing (such as the elderly, children or bedridden patients) can take them, or to prepare topical ointments, oral liquids and other preparations. At present, the commonly used medicine grinding tools in clinical practice mainly include ordinary mortars and pestles, simple tablet grinders, etc.

[0003] Ordinary mortars and pestles are used for manual grinding, which is not only labor-intensive and inefficient, but also results in uneven particle size of the ground medicine, with some particles easily remaining uncrushed. Furthermore, tablets are prone to splattering during manual grinding, leading to waste. Simple tablet grinders are mostly press-type structures, using two rigid pressure plates to crush the tablets. This method only achieves preliminary crushing of the tablets and cannot grind the medicine into a fine powder, failing to meet the needs of high-precision medication. In addition, most existing grinders lack effective sealing and dustproof structures, allowing powder to be released into the air during grinding, polluting the environment and potentially being inhaled by operators, posing a health hazard.

[0004] Therefore, it is necessary to provide a new pharmaceutical pulverizer to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a pharmaceutical pulverizer with high grinding efficiency, uniform particle size, and the ability to avoid powder contamination and tablet waste.

[0006] To solve the above-mentioned technical problems, the present invention provides a pharmaceutical pulverizer comprising: a grinding sleeve, a chopping sleeve at the top of the grinding sleeve, the two being fitted together; openings at the top and bottom of the chopping sleeve and the grinding sleeve; a receiving box threaded onto the bottom of the grinding sleeve; a chopping surrounding sleeve fixedly installed on the inner wall of the chopping sleeve; the upper half of the inner wall of the chopping surrounding sleeve being conical; a cap threadedly installed on the inner wall of the chopping sleeve; the top of the cap extending above the chopping sleeve; an installation disc inside the cap; and multiple crushing pests fixedly installed at the bottom of the installation disc, each pestle fitting into the inner wall of the chopping surrounding sleeve. A sealing plate is provided inside the cutting sleeve. The top of the sealing plate fits against the bottom of the shredding sleeve, and one side of the sealing plate extends outside the shredding sleeve and is slidably connected to the shredding sleeve. A grinding sleeve is fixedly installed on the inner wall of the grinding sleeve. A conical hole is opened at the top of the grinding sleeve. A grinding cone is provided in the conical hole. The angle between the outer wall of the grinding cone and the inner wall of the conical hole gradually increases from bottom to top. Multiple grinding protrusions are embedded on the inner wall of the conical hole and the outer ring wall of the grinding cone. A motor box is provided inside the grinding sleeve. A connecting shaft is rotatably installed at the bottom of the motor box. A grinding motor is fixedly installed inside the motor box. The output shaft of the grinding motor is fixedly connected to the top of the connecting shaft.

[0007] Furthermore, a downward pressure rod is slidably installed on the top of the cover, the bottom end of the downward pressure rod extends into the cover and is fixedly connected to the mounting disc, a circular pressure plate is fixedly installed on the top of the downward pressure rod, and a return spring is sleeved on the downward pressure rod. The top end of the return spring is fixedly connected to the circular pressure plate, and the bottom end is fixedly connected to the cover.

[0008] Furthermore, a pull plate is fixedly installed on the side of the sealing plate outside the shredding sleeve, and an arc-shaped sealing gasket is fixedly installed on the side of the pull plate near the shredding sleeve. The arc-shaped sealing gasket fits against the outer wall of the shredding sleeve, and the sealing plate penetrates through the arc-shaped sealing gasket. A threaded blind hole is opened on the shredding sleeve, and a positioning stud is threadedly installed on the pull plate. The end of the positioning stud extends into the threaded blind hole and is screwed into the inner wall of the threaded blind hole. Two supporting plates are fixedly installed on the inner wall of the shredding sleeve, and the tops of the two supporting plates fit against the bottom of the sealing plate.

[0009] Furthermore, a connecting ring is fixedly installed on the top of the grinding sleeve and the bottom of the chopping sleeve, and the two connecting rings are fixedly connected by bolts.

[0010] Furthermore, a first limiting ring is fixedly fitted on the outer ring wall of the grinding sleeve, the top of the receiving round box abuts against the first limiting ring, a second limiting ring is fixedly fitted on the outer ring wall of the cap, and the top of the shredding sleeve abuts against the bottom of the second limiting ring.

[0011] Furthermore, connecting round rods are fixedly installed on both outer walls of the motor box, and plug-in cylinders are fixedly installed at the ends of the two connecting round rods that are far apart from each other. The bottom of the two plug-in cylinders is provided with plug-in countersunk holes. Two positioning sleeve rods are fixedly installed on the inner wall of the grinding sleeve. The top ends of the two positioning sleeve rods extend into the corresponding plug-in countersunk holes, and the two positioning sleeve rods are fixedly connected to the corresponding plug-in cylinders by bolts.

[0012] Furthermore, the top of the motor box is a triangular apex design, the top of the plug-in cylinder is a conical design, and an inspection port is provided on one side of the motor box, with a sealed door inside the inspection port.

[0013] Compared with related technologies, the pharmaceutical pulverizer provided by this utility model has the following beneficial effects: I. This utility model adopts a step-by-step process of "crushing pretreatment + fine grinding". The matching design of the crushing sleeve and the crushing pestle achieves efficient coarse crushing. The matching of the grinding sleeve, the grinding cone and the grinding protrusion ensures that the fine powder is uniform and meets the needs of high-precision drug use. Second, this utility model guides the feeding of materials through the conical surface of the chopping sleeve, closes the working space to avoid the splashing of medicines during chopping and grinding, and collects the medicine powder in a round box, reducing the loss of medicines throughout the process. Furthermore, the cap, chopping sleeve, grinding sleeve and round box form a closed working system to prevent the medicine powder from being released and polluting the environment and being inhaled by the operators, thus protecting their health. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the pharmaceutical pulverizer provided by this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the connection structure between the grinding sleeve and the positioning sleeve rod in this utility model; Figure 5 This is a schematic diagram of the oblique upward view of the shredding sleeve and the shredding surrounding sleeve in this utility model; Figure 6 This is a schematic diagram of the connection structure between the motor box and the connecting shaft in this utility model; Figure 7 This is a schematic diagram of the oblique upward view of the cap and mounting disc in this utility model; Figure 8 This is a schematic diagram of the connection structure between the sealing sheet and the pull plate in this utility model.

[0015] The following are the labels in the diagram: 1. Grinding sleeve; 2. Chopping sleeve; 3. Receiving box; 4. Chopping surrounding sleeve; 5. Cover; 6. Mounting disc; 7. Crushing pestle; 8. Pressing rod; 9. Return spring; 10. Sealing plate; 11. Pulling plate; 12. Grinding surrounding sleeve; 13. Conical hole; 14. Grinding cone block; 15. Grinding protrusion; 16. Motor box; 17. Connecting shaft; 18. Connecting rod; 19. Insertion cylinder; 20. Insertion countersunk hole; 21. Positioning sleeve rod. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figures 1-8 .

[0018] The pharmaceutical pulverizer includes a grinding sleeve 1 and a chopping sleeve 2. The chopping sleeve 2 is positioned above the grinding sleeve 1, and the two sleeves are fitted together. Connecting rings are fixedly installed at the top of the grinding sleeve 1 and the bottom of the chopping sleeve 2, and the two connecting rings are connected by bolts. Both the top and bottom of the chopping sleeve 2 and the top and bottom of the grinding sleeve 1 are open. A receiving box 3 is threaded onto the bottom of the grinding sleeve 1. A chopping surround 4 is fixedly installed on the inner wall of the chopping sleeve 2. The upper half of the inner wall of the chopping surround 4 is conical to guide the feeding, allowing the tablets to remain in the designated chopping area. A cap 5 is threaded onto the inner wall of the chopping sleeve 2, with its top extending above the chopping sleeve 2. An installation disc 6 is located inside the cap 5, and multiple crushing pests 7 are fixedly installed at the bottom of the installation disc 6. The multiple crushing pests 7 are adapted to the inner wall of the chopping surround 4, allowing the crushing pests 7 to be smoothly inserted into the chopping sleeve. The inside of the cutting sleeve 4 is used to coarsely crush the tablets. A sealing piece 10 is provided inside the cutting sleeve 2. The top of the sealing piece 10 fits against the bottom of the cutting sleeve 4, and one side of the sealing piece 10 extends outside the cutting sleeve 2 and slides through it. To ensure the stability of the sealing piece 10, two support plates are fixedly installed on the inner wall of the cutting sleeve 2. The tops of the two support plates fit against the bottom of the sealing piece 10. In addition, to facilitate the operator to crush the tablets, a pressing rod 8 is slidably installed on the top of the cover 5. The bottom end of the pressing rod 8 extends into the cover 5 and is fixedly connected to the mounting disc 6. A circular pressing plate is fixedly installed on the top of the pressing rod 8. A return spring 9 is sleeved on the pressing rod 8. Its top end is fixedly connected to the circular pressing plate, and its bottom end is fixedly connected to the cover 5. By pressing the circular pressing plate, the tablets can be crushed back and forth with the help of the return spring 9.

[0019] In this embodiment, in order to finely grind the chopped tablets, a grinding sleeve 12 is fixedly installed on the inner wall of the grinding sleeve 1. A conical hole 13 is opened at the top of the sleeve, and a grinding cone 14 is provided inside the conical hole 13. The angle between the outer wall of the grinding cone 14 and the inner wall of the conical hole 13 gradually increases from bottom to top, so that the tablets can be ground gradually and the grinding effect is better. Multiple grinding protrusions 15 are embedded on the inner wall of the conical hole 13 and the outer ring wall of the grinding cone 14. A motor box 16 is provided inside the grinding sleeve 1. A connecting shaft 17 is rotatably installed at the bottom of the motor box 16. A grinding motor is fixedly installed inside the motor box 16, and its output shaft is fixedly connected to the top of the connecting shaft 17.

[0020] In this embodiment, in order to smoothly feed the shredded tablets into the grinding sleeve 1, a pull plate 11 is fixedly installed on the side of the sealing plate 10 outside the grinding sleeve 2. An arc-shaped sealing gasket is fixedly installed on the side of the pull plate 11 close to the grinding sleeve 2. The arc-shaped sealing gasket fits against the outer wall of the grinding sleeve 2, and the sealing plate 10 passes through the arc-shaped sealing gasket. A threaded blind hole is opened on the grinding sleeve 2. A positioning stud is threaded on the pull plate 11. The end of the positioning stud extends into the threaded blind hole and is screwed into the inner wall of the threaded blind hole. By pulling the pull plate 11, the sealing plate 10 can be pulled, thereby opening the bottom of the grinding sleeve 4 and discharging the shredded tablets.

[0021] In this embodiment, in order to limit the installation position of both the receiving box 3 and the cover 5, a first limiting ring is fixedly sleeved on the outer ring wall of the grinding sleeve 1, the top of the receiving box 3 abuts against the first limiting ring, and a second limiting ring is fixedly sleeved on the outer ring wall of the cover 5, the top of the chopping sleeve 2 abuts against the bottom of the second limiting ring.

[0022] In this embodiment, to facilitate subsequent cleaning and maintenance of the grinding motor and grinding cone 14, connecting round rods 18 are fixedly installed on both outer walls of the motor box 16. Insertion cylinders 19 are fixedly installed at the ends of the two connecting round rods 18 that are far apart from each other. Insertion countersunk holes 20 are opened at the bottom of the two insertion cylinders 19. Two positioning sleeves 21 are fixedly installed on the inner wall of the grinding sleeve 1. The top ends of the two positioning sleeves 21 extend into the corresponding insertion countersunk holes 20. The two positioning sleeves 21 are fixedly connected to the corresponding insertion cylinders 19 by bolts. The top of the motor box 16 is a triangular apex design, and the top of the insertion cylinders 19 is a conical design. An inspection port is opened on one side of the motor box 16, and a sealing door is provided inside the inspection port.

[0023] The working principle of the medicine pulverizer provided by this utility model is as follows: When crushing and grinding the tablets, unscrew the cap 5 and put the tablets to be crushed into the crushing sleeve 4 inside the crushing sleeve 2. Because the upper half of the inner wall of the crushing sleeve 4 is a conical surface, it can guide the medicine to concentrate in the crushing area and avoid scattering when feeding. Then, re-thread the cap 5 to the top of the crushing sleeve 2. Subsequently, the operator presses down on the circular pressing plate at the top of the pressing rod 8. The pressing rod 8 drives the mounting disc 6 at the bottom and multiple crushing pests 7 to move down synchronously. The crushing pests 7 fit into the inner wall of the crushing sleeve 4 and repeatedly impact and crush the medicine during the downward movement. When the circular pressing plate is released, the return spring 9 sleeved on the pressing rod 8 elastically returns to its original position, causing the pressing rod 8, mounting disc 6 and crushing pests 7 to spring back upward, making it easier to press and crush again until the medicine is crushed into fine particles, completing the pretreatment to improve the subsequent grinding efficiency. Next, loosen the positioning stud on the pull plate 11 to disengage it from the threaded blind hole of the crushing sleeve 2, pull the pull plate 11 to drive the sealing plate 10 to slide out of the crushing sleeve 2, and open the opening at the bottom of the crushing surrounding sleeve 4; under the action of gravity, the crushed medicine particles fall into the top conical hole 13 of the grinding surrounding sleeve 12 inside the grinding sleeve 1 through the fitting opening between the crushing sleeve 2 and the grinding sleeve 1. The triangular apex design at the top of the motor box 16 and the conical surface design of the insert cylinder 19 can guide the particles to enter the conical hole 13 smoothly and avoid accumulation; The grinding motor inside the motor box 16 is started, and its output shaft drives the connecting shaft 17 to rotate, which in turn drives the grinding cone 14 to rotate in the cone hole 13. Since multiple grinding protrusions 15 are embedded on the inner wall of the cone hole 13 and the outer wall of the grinding cone 14, the rotating grinding cone 14 cooperates with the grinding protrusions 15 on the inner wall of the cone hole 13 to shear, crush and grind the medicine particles that fall into the cone hole 13, and further refine the fine particles into uniform fine powder. The finely ground medicinal powder passes through the bottom opening of the conical hole 13 under the action of gravity and falls into the receiving round box 3, realizing the centralized collection of the medicinal powder and avoiding scattering and waste. After the grinding is completed, the medicinal powder can be taken out by unscrewing the receiving round box 3. When cleaning and maintenance are required after use, first pull out the sealing plate 10, then loosen the bolts connecting the shredding sleeve 2 and the grinding sleeve 1 to separate them. Then, unscrew the cover 5 from the shredding sleeve 2. After that, unscrew the bolts on the insertion cylinder 19, and then pull the motor box 16 upwards to bring the grinding cone 14 out from the cone hole 13. At this time, the grinding sleeve 1, shredding sleeve 2, receiving box 3, cover 5 and grinding cone 14 are all in a disassembled and independent state. After that, each part can be cleaned in detail to ensure that there are no dead corners in the cleaning. In addition, the sealed door can be opened through the inspection port on one side of the motor box 16 to inspect and maintain the grinding motor and ensure stable operation of the equipment.

[0024] Compared with related technologies, the pharmaceutical pulverizer provided by this utility model has the following beneficial effects: I. This utility model adopts a step-by-step process of "crushing pretreatment + fine grinding". The matching design of the crushing sleeve 4 and the crushing pestle 7 achieves efficient coarse crushing. The cooperation of the grinding sleeve 12, the grinding cone 14 and the grinding protrusion 15 ensures uniform fine powder and meets the needs of high-precision drug use. Second, this utility model guides the feeding of materials by using the conical surface of the chopping sleeve 4, and the enclosed working space avoids the splashing of medicines during chopping and grinding. The receiving round box 3 collects the medicine powder in a concentrated manner, reducing the loss of medicines throughout the process. In addition, the cover 5, the chopping sleeve 2, the grinding sleeve 1 and the receiving round box 3 form a closed working system to prevent the medicine powder from being released and polluting the environment and being inhaled by the operators, thus protecting their health.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pharmaceutical pulverizer, comprising a grinding sleeve, characterized in that, The grinding sleeve has a shredding sleeve at its top, which fits together. The top and bottom of the shredding sleeve and the top and bottom of the grinding sleeve are both open. A receiving box is threaded onto the bottom of the grinding sleeve. A shredding surrounding sleeve is fixedly installed on the inner wall of the shredding sleeve. The upper half of the inner wall of the shredding surrounding sleeve is conical. A cap is threaded onto the inner wall of the shredding sleeve. The top of the cap extends above the shredding sleeve. An installation disc is provided inside the cap. Multiple crushing pests are fixedly installed at the bottom of the installation disc. The multiple crushing pests are adapted to the inner wall of the shredding surrounding sleeve. A sealing plate is provided inside the shredding sleeve. The top of the sealing plate fits against the bottom of the shredding surrounding sleeve, and one side of the sealing plate extends outside the shredding sleeve and is slidably connected to the shredding sleeve. A grinding sleeve is fixedly installed on the inner wall of the grinding sleeve. A conical hole is opened at the top of the grinding sleeve. A grinding cone is provided in the conical hole. The angle between the outer wall of the grinding cone and the inner wall of the conical hole gradually increases from bottom to top. Multiple grinding protrusions are embedded on the inner wall of the conical hole and the outer ring wall of the grinding cone. A motor box is provided inside the grinding sleeve. A connecting shaft is rotatably installed at the bottom of the motor box. A grinding motor is fixedly installed inside the motor box. The output shaft of the grinding motor is fixedly connected to the top of the connecting shaft.

2. The pharmaceutical pulverizer according to claim 1, characterized in that, A pressure rod is slidably mounted on the top of the cover. The bottom end of the pressure rod extends into the cover and is fixedly connected to the mounting disc. A circular pressure plate is fixedly mounted on the top of the pressure rod. A return spring is sleeved on the pressure rod. The top end of the return spring is fixedly connected to the circular pressure plate, and the bottom end is fixedly connected to the cover.

3. The pharmaceutical pulverizer according to claim 1, characterized in that, A pull plate is fixedly installed on one side of the sealing plate outside the shredding sleeve. An arc-shaped sealing gasket is fixedly installed on the pull plate near the shredding sleeve. The arc-shaped sealing gasket fits against the outer wall of the shredding sleeve, and the sealing plate penetrates through the arc-shaped sealing gasket. A threaded blind hole is opened on the shredding sleeve. A positioning stud is threadedly installed on the pull plate. The end of the positioning stud extends into the threaded blind hole and is screwed into the inner wall of the threaded blind hole. Two supporting plates are fixedly installed on the inner wall of the shredding sleeve. The tops of the two supporting plates fit against the bottom of the sealing plate.

4. The pharmaceutical pulverizer according to claim 1, characterized in that, Both the top of the grinding sleeve and the bottom of the chopping sleeve are fixedly installed with connecting rings, and the two connecting rings are fixedly connected by bolts.

5. The pharmaceutical pulverizer according to claim 1, characterized in that, A first limiting ring is fixedly fitted on the outer ring wall of the grinding sleeve, the top of the receiving round box abuts against the first limiting ring, a second limiting ring is fixedly fitted on the outer ring wall of the cover, and the top of the chopping sleeve abuts against the bottom of the second limiting ring.

6. The pharmaceutical pulverizer according to claim 1, characterized in that, Connecting round rods are fixedly installed on both outer walls of the motor box. Insertion cylinders are fixedly installed at the ends of the two connecting round rods that are far apart from each other. Insertion countersunk holes are opened at the bottom of the two insertion cylinders. Two positioning sleeve rods are fixedly installed on the inner wall of the grinding sleeve. The top ends of the two positioning sleeve rods extend into the corresponding insertion countersunk holes, and the two positioning sleeve rods are fixedly connected to the corresponding insertion cylinders by bolts.

7. The pharmaceutical pulverizer according to claim 6, characterized in that, The top of the motor box is a triangular apex design, the top of the plug-in cylinder is a conical design, and an inspection port is provided on one side of the motor box, with a sealed door inside the inspection port.

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