Powder grinding device for extracting medicine for pharmacy

Abstract

The invention discloses a pharmaceutical powder grinding device for medicine extraction, and relates to the technical field of pharmaceutical teaching aids, the pharmaceutical powder grinding device comprises a mounting rack and a grinding tank, a first discharge pipe is arranged right below the bottom end of the grinding tank, a sealing mechanism is arranged right above the grinding tank, and a first filter screen is arranged on the inner wall of the grinding tank; a second filter screen is arranged below the first filter screen, and the bottom ends of the first tube bank, the second tube bank and the third tube bank are respectively provided with an extraction mechanism. The grinding rollers of the grinding piece are arranged to be of three different specifications, after grinding, the medicine is filtered for the first time through the first filter screen and falls into the second discharge pipe, the medicine is filtered for the second time through the second filter screen and falls into the third discharge pipe, and the medicine falling along the second filter screen falls into the first discharge pipe; and finally, the medicines are taken out along the extraction mechanism below the three discharge pipes for later use, so that the medicines are ground into particles and powder of three specifications, and the medicine grinding device is conveniently used for observation, extraction, detection, experiment and other operations of medicine teaching.

Description

Technical Field

[0001] The present invention relates to the technical field of pharmaceutical teaching aids, and particularly to a powder grinding device for extracting drugs in pharmacy. Background Art

[0002] Pharmacy is a discipline mainly based on chemistry, biology, and medicine, guiding, researching, developing, producing, using, and managing drugs. This major cultivates high-quality professionals with basic knowledge, basic theory, and basic skills in the pharmacy discipline, who can engage in drug discovery and evaluation, drug formulation design and preparation, research on drug quality standards and quality control, drug management, and pharmaceutical services in fields such as drug research and development, production, inspection, circulation, use, and management. The pharmaceutical teaching process is inseparable from various drug devices. For example, a drug grinding device can be used to make drugs into granules and powders for operations such as observation, extraction, detection, and experiments during pharmaceutical teaching.

[0003] Referring to a Chinese patent with the patent name: A Drug Grinding Device for Biomedicine (Patent Publication No.: CN113842985B, Publication Date: May 12, 2023), which includes a first box body. The bottom of the first box body is fixedly connected to a second box body, and the top of the first box body is fixedly connected to a motor protection box. A first motor is fixedly installed inside the motor protection box. In the present invention, by setting a feed inlet, only when the first motor drives the first rotating rod to rotate, the feed inlet will slowly convey the drugs piled on the top of the fixed plate into the first box body for crushing. By setting large blades and small blades, the large blades can initially crush the drugs, and the small blades can not only crush the drugs for the second time but also perform finer crushing. Another patent name is: A Grinding Device for Drug Detection (Patent Publication No.: CN116558926B, Publication Date: September 12, 2023), which includes an operation platform body and a grinding assembly arranged on the operation platform body. The grinding assembly includes a lower grinding seat, an upper grinding seat, a panel, an auxiliary grinding assembly, and an aggregate ring. By setting the auxiliary grinding assembly to be composed of a force-bearing plate, a guide rod, a buffer assembly, and a rolling ring, when the lower grinding seat rotates, it can grind the pharmaceutical fragments through the relative movement of the lower grinding seat and the upper grinding seat, and drive the rolling ring on the auxiliary grinding assembly to move up and down through a driving assembly, thereby forming a rolling effect on the pharmaceutical fragments. The above two patents are both common medicine grinding devices in the prior art and can be used in fields such as medicine and pharmacy. Although both can achieve the operation of grinding medicine into powder, as the two common medicine grinding devices mentioned above, they all take out the medicine after grinding it all into powder, and the grinding rollers of the common grinding devices have the same thickness specifications during grinding. In the processes of pharmacy teaching, experiments, etc., it is often necessary to extract at least two states of medicine in different degrees of granular and powdery forms. However, the common grinding devices cannot extract at least two states of medicine such as granules and powder for use at the same time, so there are relatively large limitations.

[0004] For this reason, the present invention provides a grinding device for extracting medicine for pharmacy use. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a grinding device for extracting medicine for pharmacy use, which solves the problem that the powder specifications ground by the grinding device during use are single and difficult to meet the requirements of pharmacy teaching and research compared with the prior art.

[0006] To achieve the above purposes, the present invention is realized through the following technical solutions: A grinding device for extracting medicine for pharmacy use, including a mounting frame and a grinding tank. A first discharge pipe is provided directly below the bottom end of the grinding tank, and a sealing mechanism is provided directly above the grinding tank. A first filter screen is provided on the inner wall of the grinding tank below the sealing mechanism for primary filtering of the medicine, and a second filter screen is provided below the first filter screen for secondary filtering of the medicine. A second discharge pipe communicating with the space above the first filter screen is provided on the left outer surface of the grinding tank, and a third discharge pipe communicating with the space above the second filter screen is provided on the right outer surface of the grinding tank. A pumping mechanism is provided at the bottom end of each of the first discharge pipe, the second discharge pipe, and the third discharge pipe; The sealing mechanism includes a sealing plate, a top seat, and a bottom seat that are integrally connected and communicate with each other up and down inside. Three medicine feeding ports communicating with its interior are provided at the top end of the top seat, and a grinding member is provided inside the bottom seat. The grinding member is composed of two identical grinding rollers. The grinding roller includes a first grinding roller, a second grinding roller, and a third grinding roller that are coaxially connected; The pumping mechanism includes a bracket fixedly connected to the mounting frame. A first fixing frame is fixedly connected to the inner surface of the bracket. A push-pull plate is slidably connected inside the first fixing frame. A material taking plate is fixedly connected to the front end of the push-pull plate. A discharge pipe is provided on the material taking plate. A second fixing frame is fixedly connected to the outer surface of the bracket. A pull rod is movably penetrated through the second fixing frame. One end of the pull rod is fixedly connected to the rear end of the push-pull plate.

[0007] Preferably, the first filter screen is of a mesh structure and is inclined inside the grinding tank, and the second filter screen is of a mesh structure and the mesh size is smaller than the mesh size of the first filter screen.

[0008] Preferably, the second filter screen is inclined inside the grinding tank and in the opposite direction to the inclination direction of the first filter screen, and the top position of the second discharge pipe is higher than the top position of the third discharge pipe.

[0009] Preferably, there is a gap between the bottom ends of the three extraction mechanisms and the bottom surface of the mounting frame, and a receiving container is placed below each of the three extraction mechanisms for receiving the pharmaceutical powder falling at the corresponding position.

[0010] Preferably, the bottom ends of the first discharge pipe, the second discharge pipe and the third discharge pipe are respectively fixedly connected to the corresponding first fixing frame, and the bottom openings of the first discharge pipe, the second discharge pipe and the third discharge pipe respectively correspond to the bottom discharge pipes thereof.

[0011] Preferably, a spring is fixedly sleeved on the outer surface of the pull rod at the inner side of the second fixing frame, and a handle for convenient pushing and pulling is provided at one end of the pull rod.

[0012] Preferably, the grinding member is located above the center of the cavity of the grinding tank, and one end of the central axis of each of the two grinding rollers extends to the outside of the base and is respectively fixedly connected to a gear, and a protective box is provided outside the gear.

[0013] Preferably, the protective box is fixedly connected to the outer surface of the base and is inside the cavity of the grinding tank, and a motor is installed inside the protective box, and the output shaft of the motor is connected to the central axis of one of the gears through a coupling.

[0014] Preferably, the tooth specifications of the first grinding roller, the second grinding roller and the third grinding roller are all different, and are used for grinding the medicine into particles and powders of different specifications, and the first grinding roller, the second grinding roller and the third grinding roller respectively correspond to the three medicine feeding ports up and down.

[0015] Preferably, two partition plates are further provided on the inner wall of the top seat, and the two partition plates are respectively located between every two adjacent medicine feeding ports, and the bottom ends of the partition plates are close to the top end of the grinding member for separating the falling medicine.

[0016] Beneficial effects The present invention provides a powder grinding device for extracting medicines in pharmacy. Compared with the prior art, the following beneficial effects are achieved: (1). The powder grinding device for pharmaceutical extraction drugs has a structure where the grinding rollers of the grinding part are coaxially connected in three different specifications. After grinding, the drugs are first filtered through the first filter screen and fall into the second discharge pipe. Then, they are secondarily filtered through the second filter screen and fall into the third discharge pipe. Finally, the drugs that fall along the second filter screen fall into the first discharge pipe. The drugs in the first, second, and third discharge pipes are ultimately taken out and used through the extraction mechanism located below them, so as to grind the drugs into three specifications of granules and powders, which is convenient for multiple operations such as observation, extraction, detection, and experiments in pharmaceutical teaching.

[0017] (2). The powder grinding device for pharmaceutical extraction drugs is provided with an extraction mechanism. When it is necessary to use the drugs in any one of the extraction mechanisms, hold the handle and pull it forward, which will drive the pull rod, push-pull plate, and material taking plate to move. When the bottom end of the feeding pipe gradually moves and disengages from the contact with the first fixing frame, the drugs in the feeding pipe fall into the receiving container, completing the extraction of the drugs. This is convenient for sampling the drugs at any time, and the drugs are stored in the first, second, and third discharge pipes and the feeding pipe in sequence after grinding, without disrupting their order, providing convenience for subsequent sampling and testing.

[0018] (3). The powder grinding device for pharmaceutical extraction drugs is provided with three medicine feeding ports above the grinding part, which correspond to the first grinding roller, the second grinding roller, and the third grinding roller respectively, and partitions are arranged between every two adjacent medicine feeding ports to separate the feeding channels, further ensuring the equal or quantitative amount required for different specifications of drug granules and powders produced. Description of the Drawings

[0019] Figure 1 It is a three-dimensional view of the overall external structure of the present invention; Figure 2 It is a front view of the internal structure of the grinding tank of the present invention; Figure 3 It is a schematic structural view of the extraction mechanism located below the grinding tank of the present invention; Figure 4 It is a schematic structural view of the connection between the grinding tank and the mounting frame of the present invention; Figure 5 For the present invention Figure 4 The enlarged view of part A in; Figure 6 It is a schematic structural view of the sealing mechanism located at the top of the grinding tank of the present invention; Figure 7 It is a partially sectional schematic structural view of the sealing mechanism of the present invention; Figure 8 It is a schematic structural view of the composition of the grinding part of the present invention; Figure 9 It is a schematic structural view of the grinding part of the present invention.

[0020] In the figure: 1. Mounting frame; 10. Extraction mechanism; 11. Bracket; 12. First fixing frame; 13. Push-pull plate; 131. Material-taking plate; 132. Feeding pipe; 14. Second fixing frame; 141. Pull rod; 142. Spring; 2. Grinding tank; 20. First row of pipes; 21. First filter screen; 211. Second row of pipes; 22. Second filter screen; 221. Third row of pipes; 3. Sealing mechanism; 31. Sealing plate; 32. Top seat; 321. Medicine feeding port; 322. Partition board; 33. Base; 331. Protection box; 34. Grinding parts; 341. First grinding roller; 342. Second grinding roller; 343. Third grinding roller; 35. Gear; 4. Handle; 5. Material receiving container. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-9 , for the technical solution of the present invention: A powder grinding device for extracting medicines in pharmacy, including a mounting frame 1 and a grinding tank 2. The mounting frame 1 can be fixed on a workbench, a teaching table or other teaching positions by bolts. A connecting plate is also used to support and fix between the mounting frame 1 and the tank body of the grinding tank 2 to improve the stability of the grinding tank 2 during the whole working period. A first row of pipes 20 is arranged directly below the bottom end of the grinding tank 2, and a sealing mechanism 3 is arranged directly above the grinding tank 2. A first filter screen 21 is arranged on the inner wall of the grinding tank 2 below the sealing mechanism 3 for primary filtering of medicines, and a second filter screen 22 is arranged below the first filter screen 21 for secondary filtering of medicines. A second row of pipes 211 communicating with the space above the first filter screen 21 is arranged on the left outer surface of the grinding tank 2, and a third row of pipes 221 communicating with the space above the second filter screen 22 is arranged on the right outer surface of the grinding tank 2. The larger particles of the medicines filtered by the first filter screen 21 fall along the first filter screen 21 into the second row of pipes 211. The medicines passing through the mesh holes of the first filter screen 21 are secondarily filtered by the second filter screen 22. The medicine particles isolated above the second filter screen 22 fall into the third row of pipes 221. Finally, the finer medicine powder passes through the second filter screen 22 and falls into the first row of pipes 20, dividing the ground medicines into three different specifications for easy observation, extraction, detection, experiment and other operations in pharmaceutical teaching; Among them, the first filter screen 21 is of a mesh structure and is inclined inside the grinding tank 2. The second filter screen 22 is of a mesh structure and the mesh size is smaller than that of the first filter screen 21. The second filter screen 22 is inclined inside the grinding tank 2 and has an inclination direction opposite to that of the first filter screen 21. The top position of the second discharge pipe 211 is higher than the top position of the third discharge pipe 221. The first filter screen 21 and the second filter screen 22 can both be disassembled inside the grinding tank 2, and their installation methods are similar to those of most circular sieve meshes in the prior art, and will not be elaborated here.

[0023] Further, as Figures 6-9 shown, the sealing mechanism 3 includes a sealing plate 31, a top seat 32 and a bottom seat 33 which are integrally connected and communicate with each other up and down inside. The top of the top seat 32 is provided with three medicine feeding ports 321 communicating with its interior. A grinding member 34 is arranged inside the bottom seat 33. The grinding member 34 is composed of two identical grinding rollers. The grinding roller includes a first grinding roller 341, a second grinding roller 342 and a third grinding roller 343 which are coaxially connected. The first grinding roller 341, the second grinding roller 342 and the third grinding roller 343 rotate synchronously. The rotation directions of the two grinding rollers in the grinding member 34 are different, and the medicine falls and is ground between the two grinding rollers; Among them, the tooth specifications of the first grinding roller 341, the second grinding roller 342 and the third grinding roller 343 are all different, and are used to grind the medicine into particles and powders of different specifications. The first grinding roller 341, the second grinding roller 342 and the third grinding roller 343 are respectively corresponding up and down to the three medicine feeding ports 321. When three different specifications of medicine need to be ground, the medicine is respectively put into the three different medicine feeding ports 321. The medicine is divided into three parts and respectively falls to the first grinding roller 341, the second grinding roller 342 and the third grinding roller 343. After being ground by the rotation of the grinding member 34 and then filtered by the first filter screen 21 and the second filter screen 22, finally three different specifications of medicine are obtained and respectively discharged along the first discharge pipe 20, the second discharge pipe 211 and the third discharge pipe 221. When two different specifications of medicine need to be ground, select above the corresponding grinding roller and put it in from the corresponding two medicine feeding ports 321. When one specification of medicine needs to be ground, select above the corresponding grinding roller and put it in from the corresponding one medicine feeding port 321; Among them, two partition plates 322 are further arranged on the inner wall of the top seat 32. The two partition plates 322 are respectively located between every two adjacent medicine feeding ports 321. The bottom end of the partition plate 322 is close to the top end of the grinding member 34, and is used to separate the falling medicine, further ensuring that the different specifications of medicine produced are equal in quantity or quantitative; Among them, the grinding member 34 is located above the center of the cavity of the grinding tank 2. One end of the central axis of each of the two grinding rollers extends outside the base 33 and is respectively fixedly connected to a gear 35. A protective box 331 is arranged outside the gear 35. The protective box 331 is fixedly connected to the outer surface of the base 33 and is inside the cavity of the grinding tank 2. A motor is installed inside the protective box 331. The output shaft of the motor is connected to the central axis of one of the gears 35 through a coupling. By driving one of the gears 35 to rotate by the motor, the other gear 35 is driven to rotate in the reverse direction, providing a driving source for the grinding operation of the grinding member 34.

[0024] Further, as Figures 1-4 shown, an extraction mechanism 10 is provided at the bottom end of each of the first row of pipes 20, the second row of pipes 211, and the third row of pipes 221. The extraction mechanism 10 includes a bracket 11 fixedly connected to the mounting frame 1. A fixing frame one 12 is fixedly connected to the inner surface of the bracket 11. A push-pull plate 13 is slidably connected inside the fixing frame one 12. A material taking plate 131 is fixedly connected to the front end of the push-pull plate 13. A blanking pipe 132 is arranged on the material taking plate 131. A fixing frame two 14 is fixedly connected to the outer surface of the bracket 11. A pull rod 141 penetrates through the fixing frame two 14 movably. One end of the pull rod 141 is fixedly connected to the rear end of the push-pull plate 13. The pipe orifice of the blanking pipe 132 penetrates through the top end of the material taking plate 131, and the diameter of the blanking pipe 132 is larger than the diameters of the second row of pipes 211, the first row of pipes 20, and the third row of pipes 221. After the medicine is ground, it is stored in the first row of pipes, the second row of pipes, the third row of pipes, and the blanking pipe in sequence, without disturbing its sequence, facilitating subsequent sampling and testing. Among them, the first row of pipes 20 is located at the bottom end of the grinding tank 2, and the first row of pipes 20 and the bottom end of the grinding tank 2 form a conical funnel-shaped structure. Therefore, the medicine falling along the first row of pipes 20 can fall smoothly; Among them, there are spaces between the bottom ends of the three extraction mechanisms 10 and the bottom surface of the mounting frame 1, and a receiving container 5 is placed below each of the three extraction mechanisms 10 for receiving the pharmaceutical powder falling at the corresponding position. The bottom ends of the first row of pipes 20, the second row of pipes 211, and the third row of pipes 221 are respectively fixedly connected to the corresponding first fixing frame 12. The bottom openings of the first row of pipes 20, the second row of pipes 211, and the third row of pipes 221 respectively correspond to the bottom discharge pipes 132 at their bottoms. A spring 142 is fixedly sleeved on the outer surface of the pull rod 141 at the part inside the second fixing frame 14. One end of the pull rod 141 is provided with a handle 4 for convenient pushing and pulling. In the initial state, the spring 142 is in a natural state without being compressed, and the discharge pipes 132 in the three extraction mechanisms 10 respectively correspond vertically to the bottoms of the first row of pipes 20, the second row of pipes 211, and the third row of pipes 221, and the bottom end of the discharge pipe 132 completely abuts against the inner bottom surface of the first fixing frame 12. At this time, the discharge pipe 132 is in a non-open state, and the pharmaceuticals inside the first row of pipes 20, the second row of pipes 211, and the third row of pipes 221 can fall into the discharge pipe 132 for storage. When it is necessary to use the pharmaceuticals in any one of the extraction mechanisms 10, hold the handle 4 and pull it forward to drive the pull rod 141, the push-pull plate 13, and the material taking plate 131 to move. When the bottom end of the discharge pipe 132 gradually moves and disengages from the contact with the first fixing frame 12, the pharmaceuticals in the discharge pipe 132 fall into the receiving container 5. Release the hold on the handle 4. At this time, under the elastic force of the spring 142, each component automatically returns to its original position, and the extraction of the pharmaceuticals is completed.

[0025] Working principle: When a drug of a certain specification needs to be ground, it is selected above the grinding roller of the corresponding specification and put in from one of the corresponding drug inlets 321. When drugs of two different specifications need to be ground, it is selected above the grinding roller of the corresponding specification and put in from the two corresponding drug inlets 321. When drugs of three different specifications need to be ground, the drugs are respectively put into three different drug inlets 321. The drugs are divided into three parts and respectively fall to the first grinding roller 341, the second grinding roller 342 and the third grinding roller 343. The output shaft of the motor is connected to the central shaft of one of the gears 35 through a coupling. Then the motor is started to drive one of the gears 35 to rotate through the motor, and then drive the other gear 35 to rotate in the reverse direction, providing a driving source for the grinding operation of the grinding member 34. After the drugs are ground, they are stored in the first row pipe, the second row pipe, the third row pipe and the blanking pipe in sequence, and their sequence will not be disrupted, which facilitates the subsequent sampling inspection. After being rotated and ground by the grinding member 34 and filtered through the first filter screen 21 and the second filter screen 22, three drugs of different specifications are finally obtained and respectively discharged into the first row pipe 20, the second row pipe 211 and the third row pipe 221. When the drug in any one of the extraction mechanisms 10 needs to be used, hold the handle 4 and pull it forward, which will drive the pull rod 141, the push-pull plate 13 and the material taking plate 131 to move. When the bottom end of the blanking pipe 132 gradually moves and disengages from the contact with the first fixing frame 12, the drug in the blanking pipe 132 falls into the receiving container 5. Release the hold on the handle 4. At this time, under the elastic force of the spring 142, each component automatically returns to its original position, and the extraction of the drug is completed.

[0026] Meanwhile, the content not detailedly described in this specification belongs to the prior art well-known to those skilled in the art.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding device for extracting pharmaceutical drugs, comprising a mounting frame (1) and a grinding tank (2), characterized in that: A first row of pipes (20) is arranged directly below the bottom end of the grinding jar (2), and a sealing mechanism (3) is arranged directly above the grinding jar (2); a first filter screen (21) is arranged on the inner wall of the grinding jar (2) below the sealing mechanism (3) for filtering the medicine once; a second filter screen (22) is arranged below the first filter screen (21) for filtering the medicine twice; a second row of pipes (211) communicating with the space above the first filter screen (21) is arranged on the left outer surface of the grinding jar (2); a third row of pipes (221) communicating with the space above the second filter screen (22) is arranged on the right outer surface of the grinding jar (2); and an extraction mechanism (10) is arranged at the bottom ends of the first row of pipes (20), the second row of pipes (211) and the third row of pipes (221); The sealing mechanism (3) comprises a sealing plate (31) which is integrally connected and internally communicated with each other from top to bottom, a top seat (32) and a base seat (33); the top of the top seat (32) is provided with three drug injection ports (321) which are communicated with the inside thereof; the base seat (33) is provided with a grinding member (34) inside; the grinding member (34) is composed of two identical grinding rollers; the grinding rollers comprise a first grinding roller (341), a second grinding roller (342) and a third grinding roller (343) which are coaxially connected; The extraction mechanism (10) comprises a bracket (11) fixedly connected to the mounting frame (1), the inner surface of the bracket (11) being fixedly connected to a fixing frame 1 (12), the interior of the fixing frame 1 (12) being slidably connected to a push-pull plate (13), the front end of the push-pull plate (13) being fixedly connected to a material taking plate (131), the material taking plate (131) being provided with a material discharge pipe (132), the outer surface of the bracket (11) being fixedly connected to a fixing frame 2 (14), a pull rod (141) movably passing through the fixing frame 2 (14), one end of the pull rod (141) being fixedly connected to the rear end of the push-pull plate (13).

2. A pharmaceutical powder grinding device for extracting medicines according to claim 1, characterized in that: The first filter screen (21) is a mesh structure and is arranged obliquely inside the grinding jar (2); the second filter screen (22) is a mesh structure and has a mesh size smaller than the mesh size of the first filter screen (21).

3. A pharmaceutical powder grinding device for extracting medicines according to claim 1, characterized in that: The second filter screen (22) is arranged obliquely inside the grinding jar (2) and in an inclination direction opposite to that of the first filter screen (21), and the top position of the second row of tubes (211) is higher than the top position of the third row of tubes (221).

4. A pharmaceutical powder grinding device for extracting medicines according to claim 1, characterized in that: A gap is provided between the bottom ends of the three extraction mechanisms (10) and the bottom surface of the mounting frame (1), and a material receiving container (5) is placed below each of the three extraction mechanisms (10) to receive the medicine powder dropped from the corresponding position.

5. A pharmaceutical powder grinding device for extracting medicines according to claim 1, characterized in that: The bottom ends of the first row of tubes (20), the second row of tubes (211) and the third row of tubes (221) are respectively fixedly connected to a fixing frame 1 (12) corresponding to themselves, and the bottom openings of the first row of tubes (20), the second row of tubes (211) and the third row of tubes (221) correspond to the bottom feed tubes (132) thereof.

6. A pharmaceutical powder grinding device for extracting medicines according to claim 1, characterized in that: The outer surface of the pull rod (141) is located inside the second fixing frame (14) and is fixedly sleeved with a spring (142). One end of the pull rod (141) is provided with a handle (4) for easy pushing and pulling.

7. A pharmaceutical powder grinding device for extracting medicines according to claim 1, characterized in that: The grinding element (34) is located at a position above the center of the cavity of the grinding jar (2), one end of the central axis of the two grinding rollers extends to the outside of the base (33) and is respectively fixedly connected to a gear (35), and a protective box (331) is provided outside the gear (35).

8. A pharmaceutical powder grinding device for extracting medicines according to claim 7, characterized in that: The protection box (331) is fixedly connected to the outer surface of the base (33) and is located in the cavity of the grinding jar (2). A motor is installed inside the protection box (331), and the output shaft of the motor is connected to the central shaft of one of the gears (35) via a coupling.

9. A pharmaceutical powder grinding device for extracting medicines according to claim 1, characterized in that: The first grinding roller (341), the second grinding roller (342) and the third grinding roller (343) have different roller tooth specifications and are used to grind the medicine into particles or powders of different specifications. The first grinding roller (341), the second grinding roller (342) and the third grinding roller (343) correspond to the three medicine feeding ports (321) above and below, respectively.

10. A pharmaceutical drug extraction grinding device according to claim 1, characterized in that: The inner wall of the top seat (32) is further provided with two partitions (322), the two partitions (322) being respectively located between two adjacent medicine feeding ports (321), the bottom ends of the partitions (322) being close to the top ends of the grinding members (34) and being used to separate falling medicines.

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