Medicine split charging and metering device

Abstract

The utility model discloses a medicine split charging and metering device in the technical field of medicine dispensing, which comprises a positioning medicine falling disc, a metering disc, a bottom medicine falling disc and a medicine blocking disc which are coaxially arranged in sequence, the positioning medicine falling disc can be fixedly connected to a bottle opening of a medicine bottle, a through hole is formed in the center of the metering disc, and a connecting piece can penetrate through the through hole to fixedly connect the positioning medicine falling disc with the bottom medicine falling disc. The metering disc is rotationally connected between the positioning medicine falling disc and the bottom medicine falling disc, and a metering groove is formed in the metering disc; a medicine inlet and a medicine outlet are formed in the positioning medicine falling tray and the bottom medicine falling tray respectively, and the medicine inlet and the medicine outlet are arranged in a staggered manner; and the medicine blocking disc can rotate to block the group of medicine inlets, the group of metering grooves or the group of medicine outlets, so that the required parts of medicines can be flexibly regulated, and the condition that only the multiple parts of medicines in the medicine inlets can be regulated is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drug dispensing, in particular to a drug subpackaging and metering device. Background Art

[0002] The drug dispensing and metering device (dispensing bottle cap) is a combined bottle cap installed on the bottle body and used for dispensing Chinese medicine granule preparations. It is generally composed of a positioning medicine drop plate, a metering plate and a bottom medicine drop plate.

[0003] When dispensing granular preparations or powder medicines, the metering disk is rotated to align the hole on the metering disk with the drug inlet on the positioning drug drop disk to extract the medicine; then the metering disk is rotated again to align it with the drug outlet on the bottom drug drop disk to drop the medicine.

[0004] In order to improve work efficiency, many existing bulk granule or powder medicine dispensing and metering devices are designed with two or more medicine outlets for parallel adjustment.

[0005] However, such a design has great limitations. For example, if a device has N drug outlets, only a number of drugs that is a multiple of N can be dispensed, and the dispensing is not flexible enough. Utility Model Content

[0006] The utility model aims to provide a medicine subpackaging and metering device to solve the technical problem that the medicine subpackaging and metering device in the prior art is not flexible enough in adjustment.

[0007] In order to solve the above technical problems, the utility model specifically provides a medicine dispensing and metering device, comprising a coaxially arranged positioning medicine drop tray, a metering tray, a bottom medicine drop tray and a blocking medicine tray, and the positioning medicine drop tray, the metering tray and the bottom medicine drop tray are arranged in sequence;

[0008] It comprises a coaxially arranged positioning medicine drop tray, a metering tray, a bottom medicine drop tray and a medicine blocking tray, and the positioning medicine drop tray, the metering tray and the bottom medicine drop tray are arranged in sequence;

[0009] The positioning medicine drop tray can be fixedly connected to the bottle mouth of the medicine bottle, and a through hole is provided at the center of the metering tray, and a connecting piece can pass through the through hole to fix the positioning medicine drop tray with the bottom medicine drop tray;

[0010] The metering plate is rotatably connected between the positioning medicine dropping plate and the bottom medicine dropping plate, and a metering groove is provided on the metering plate;

[0011] The positioning medicine drop tray and the bottom medicine drop tray are respectively provided with a medicine inlet and a medicine outlet, and the medicine inlet and the medicine outlet are staggered;

[0012] A group of the drug outlets, a group of the drug inlets, and a group of the metering slots constitute an adjustment hole group, and a plurality of the adjustment hole groups are provided on the metering bottle cap;

[0013] The medicine blocking plate is arranged above or below any one of the positioning medicine dropping plate, the metering plate and the bottom medicine dropping plate;

[0014] The medicine blocking disk can rotate to block a group of the medicine inlets, a group of the metering grooves or a group of the medicine outlets.

[0015] As a preferred solution of the utility model, the inner circle of the medicine blocking disk is composed of a blocking piece and a notch, the blocking piece is used to block the medicine inlet, the metering groove or the medicine outlet, and the notch is for the Chinese medicine particles to fall through.

[0016] The inner edge of the blocking piece is arranged in a circular ring shape, and a columnar structure nested with the circular ring is arranged in the center of the positioning medicine dropping plate, the metering plate or the bottom medicine dropping plate to constrain the position of the medicine blocking plate.

[0017] As a preferred solution of the utility model, the metering tank includes a large metering tank and a small metering tank;

[0018] In the non-adjusting state, the drug inlet, the drug outlet, the small metering groove and the large metering groove are arranged clockwise or counterclockwise, and the drug outlets, the drug inlet, the large metering groove and the small metering groove in all the adjustment hole groups are arranged in the same direction;

[0019] When performing micro-particle adjustment, the metering disk is reciprocated to make only the small metering groove reciprocate to take medicine from the medicine inlet and drop medicine from the medicine outlet, so as to achieve micro-particle adjustment;

[0020] When large-dose granules are dispensed, the metering disk is continuously and rapidly moved in the same direction, so that the small metering groove and the large metering groove jointly take medicine from the medicine inlet and drop medicine from the medicine outlet, thereby achieving large-dose granules dispensing.

[0021] As a preferred solution of the utility model, the large metering groove, the small metering groove, the drug inlet and the drug outlet are all configured as fan-shaped holes.

[0022] As a preferred solution of the utility model, an arc plate with the metering disk as the center and a straight plate coinciding with the radius of the metering disk are arranged in the large metering groove to divide the large metering groove into a plurality of small fan-shaped holes.

[0023] As a preferred solution of the utility model, an annular groove is provided on the bottom outer edge of the positioning medicine dropping plate, and the inner diameter of the metering plate is equal to the outer diameter of the annular groove, so that the metering plate can be nested outside the annular groove to constrain the metering plate to only rotate.

[0024] As a preferred solution of the utility model, a screw through hole is provided at the center of the bottom medicine dropping tray, and a middle through hole is provided at the center of the positioning medicine dropping tray, so that the bottom medicine dropping tray and the positioning medicine dropping tray can be fixedly connected by screws.

[0025] As a preferred solution of the utility model, the metering disc is evenly provided with overflow openings on the inner circles of the large metering groove and the small metering groove to facilitate overflow of excess medicine powder.

[0026] As a preferred solution of the utility model, the acting parts for the driving structure outside the metering disk and the medicine blocking disk are symmetrically arranged so that the metering disk is evenly stressed when rotating.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] By adding a medicine blocking disk to the traditional medicine filling and metering device, when adjusting the medicine, you can choose not to block the medicine inlet, metering groove or medicine outlet, or choose to block a group of medicine inlets, metering grooves or medicine outlets by rotating the medicine blocking disk. This allows you to flexibly adjust the required number of medicines, without being limited to being able to adjust only multiples of the medicine inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0030] Figure 1 This is a schematic diagram of the structure of the medicine packing and metering device in the embodiment of the utility model;

[0031] Figure 2 for Figure 1 Schematic diagram of the split structure;

[0032] Figure 3 It is a schematic diagram of the structure of the metering disk in the embodiment of the utility model.

[0033] The numbers in the figure represent the following:

[0034] 1-positioning medicine drop tray, 2-metering tray, 3-bottom medicine drop tray, 4-blocking medicine tray, 5-medicine inlet, 6-medicine outlet, 7-large metering groove, 8-small metering groove, 9-screw through hole, 10-middle through hole, 11-annular card groove, 12-medicine overflow port, 13-blocking piece. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] The utility model specifically provides a medicine dispensing and metering device, comprising a coaxially arranged positioning medicine drop tray 1, a metering tray 2, a bottom medicine drop tray 3 and a blocking medicine tray 4, and the positioning medicine drop tray 1, the metering tray 2 and the bottom medicine drop tray 3 are arranged in sequence;

[0037] The positioning medicine drop tray 1 can be fixedly connected to the bottle mouth of the medicine bottle, and a through hole is provided at the center of the metering tray 2, and a connecting piece can pass through the through hole to fix the positioning medicine drop tray 1 with the bottom medicine drop tray 3;

[0038] The metering plate 2 is rotatably connected between the positioning medicine dropping plate 1 and the bottom medicine dropping plate 3, and a metering groove is provided on the metering plate 2;

[0039] The positioning medicine drop tray 1 and the bottom medicine drop tray 3 are respectively provided with a medicine inlet 5 and a medicine outlet 6, and the medicine inlet 5 and the medicine outlet 6 are staggered;

[0040] A group of drug outlets 6, a group of drug inlet 5, and a group of metering slots constitute an adjustment hole group, and a plurality of adjustment hole groups are arranged on the metering bottle cap;

[0041] The medicine blocking plate 4 is arranged above or below any one of the medicine positioning plate 1, the metering plate 2 and the bottom medicine plate 3;

[0042] The medicine blocking disk 4 can rotate to block a group of medicine inlets 5, a group of metering grooves or a group of medicine outlets 6, so as to achieve the adjustment of odd-numbered Chinese medicine granules or even-numbered Chinese medicine granules at the same time.

[0043] It should be noted that the positioning medicine drop tray 1 can be fixedly connected to the bottle mouth of the medicine bottle by means of threaded connection.

[0044] When the medicine blocking tray 4 is arranged above the positioning medicine dropping tray 1, an adapter is provided on the positioning medicine dropping tray 1, which is threadedly connected to the bottle mouth of the medicine bottle through the adapter, and a notch is provided on one side of the adapter to expose the gear ring for easy engagement of the gears of the driving mechanism.

[0045] The specific driving mode and driving structure of the medicine blocking disk 4 and the metering disk 2 can refer to the technical solution disclosed in our company's patent CN201510394787.9, which will not be elaborated here.

[0046] Taking the case where two groups of the drug outlet 6, the drug inlet 5 and the metering groove are provided as an example, the principle and advantages of the Chinese medicine granule dispensing bottle cap are explained.

[0047] The traditional Chinese medicine granule dispensing bottle cap can only dispense 2N portions of medicine. If 2N+1 portions of medicine need to be dispensed, the traditional Chinese medicine granule dispensing bottle cap cannot achieve the dispensing.

[0048] If the Chinese medicine granule dispensing bottle cap of the utility model is used, the medicine blocking disk 4 can be not rotated first, that is, the medicine blocking disk 4 does not block the medicine inlet 5, the metering groove or the medicine outlet 6; the metering disk 2 is rotated normally, 2N portions of medicine are first dispensed, and then the medicine blocking disk 4 is rotated again, so that the medicine blocking disk 4 blocks a group of medicine outlets 6, the medicine inlet 5 or the metering groove, so that only one portion of medicine is discharged from the medicine outlet 6, and one portion of medicine is dispensed separately, and the dispensing of 2N+1 portions of medicine can be completed.

[0049] If the drug outlet 6, the drug inlet 5 and the metering groove are each provided with three groups, if 3N+1 portions of medicine are to be adjusted, 3 portions of medicine can be adjusted first, and then the drug blocking disk 4 is rotated to block one group of drug outlet 6, drug inlet 5 or metering groove, and two portions of medicine can be adjusted twice separately, that is, 4 portions of medicine are adjusted after rotating the drug blocking disk 4, and the adjustment of 3N+1 portions of medicine can be completed.

[0050] The adjustment order in the above process is reversible, that is, 4 portions of medicine can be adjusted first, and then 3 portions of medicine can be adjusted.

[0051] It should be noted that although the medicine blocking tray 4 is arranged above or below any one of the positioning medicine dropping tray 1, the metering tray 2 and the bottom medicine dropping tray 3, it seems that the medicine blocking tray 4 has six installation positions. However, in fact, there are only four, as follows:

[0052] The first installation order: blocking medicine tray 4, positioning medicine drop tray 1, metering tray 2 and bottom medicine drop tray 3; the second installation order: positioning medicine drop tray 1, blocking medicine tray 4, metering tray 2 and bottom medicine drop tray 3; the third installation order: positioning medicine drop tray 1, metering tray 2, blocking medicine tray 4 and bottom medicine drop tray 3; the fourth installation order: positioning medicine drop tray 1, metering tray 2, bottom medicine drop tray 3 and blocking medicine tray 4.

[0053] In fact, no matter the medicine blocking plate 4 is located above or below the medicine positioning plate 1 , the medicine inlet 5 on the medicine positioning plate 1 can be blocked; the same principle applies to blocking the metering plate 2 and the bottom medicine plate 3 .

[0054] The difference between blocking the positioning medicine drop tray 1, the bottom medicine drop tray 3 and the metering tray 2 by the medicine blocking tray 4 is that if the positioning medicine drop tray 1 and the bottom medicine drop tray 3 are blocked, the medicine blocking tray 4 does not need to move after rotating to block the medicine inlet 5 or the medicine outlet 6, so as to prevent the blocked medicine inlet 5 from entering the metering groove, and prevent the medicine in the metering groove from entering the blocked medicine outlet 6.

[0055] If the metering groove on the metering disk 2 is blocked, then after the blocking medicine disk 4 blocks the metering groove, if the blocking medicine disk 4 is stationary, the metering disk 2 will be misaligned with the blocking medicine disk 4 when rotating, so that the blocked metering groove can be unblocked. Therefore, the blocking medicine disk 4 also needs to rotate synchronously with the metering disk 2.

[0056] In summary, by adding a medicine blocking disk 4 to the traditional Chinese medicine granule dispensing bottle cap, when dispensing medicines, the medicine blocking disk 4 can be rotated to choose not to block the medicine inlet 5, the metering groove or the medicine outlet 6, or to choose to block a group of the medicine inlet 5, the metering groove or the medicine outlet 6, so that the required number of medicines can be flexibly dispensed, and there is no need to be limited to being able to dispense only 5 times the medicine inlet.

[0057] Furthermore, the inner circle of the medicine blocking plate 4 is composed of a blocking piece 13 and a gap. The blocking piece 13 is used to block the medicine inlet 5, the metering groove or the medicine outlet 6, and the gap is for the Chinese medicine particles to fall through.

[0058] The inner edge of the blocking piece 13 is set to be annular, and a columnar structure nested with the annular ring is set in the center of the positioning medicine drop plate 1, the metering plate 2 or the bottom medicine drop plate 3 to constrain the position of the blocking medicine plate 4.

[0059] There are many ways to constrain the medicine blocking plate 4, and only one of them is listed in the present utility model.

[0060] Furthermore, the existing drug packaging and metering devices generally perform large-dose adjustment through a metering disk 2 with many holes, and perform micro-adjustment through a metering disk 2 with few holes. It is impossible to take into account both large-dose adjustment and micro-adjustment through the same metering disk 2.

[0061] In order to solve this technical problem, metering tanks including a large metering tank 7 and a small metering tank 8 are provided.

[0062] In the non-adjusting state, the drug inlet 5, the drug outlet 6, the small metering groove 8 and the large metering groove 7 are arranged clockwise or counterclockwise, that is, the drug outlet 6 should be between the drug inlet 5 and the metering groove, and the small metering groove 8 should be on the side of the large metering groove 7 close to the drug outlet 6.

[0063] Furthermore, the drug outlet 6, drug inlet 5, large metering groove 7 and small metering groove 8 in all the adjusting hole groups are arranged in the same direction.

[0064] When micro-amount particles are adjusted, the metering disk 2 is rotated back and forth, so that only the small metering groove 8 reciprocates to take medicine from the medicine inlet 5 and drops medicine from the medicine outlet 6, so as to achieve micro-amount particles adjustment.

[0065] When large-dose granules are dispensed, the metering disk 2 is continuously and rapidly moved in the same direction, so that the small metering groove 8 and the large metering groove 7 take medicine from the medicine inlet 5 together and drop medicine from the medicine outlet 6, so as to achieve large-dose granules dispensing.

[0066] A large metering groove 7 and a small metering groove 8 are provided on the metering disk 2. The metering disk 2 can be rotated in two different ways to achieve micro-amount adjustment using the small metering groove 8 alone, or large-dose adjustment using the small metering groove 8 and the large metering groove 7 at the same time, that is, micro-amount adjustment or large-dose adjustment can be taken into account at the same time through one metering disk 2.

[0067] The specific adjustment methods are as follows:

[0068] When micro-adjusting, the metering disk 2 needs to be rotated back and forth so that the small metering groove 8 can reciprocate to take medicine from the medicine inlet 5 and drop medicine from the medicine outlet 6; while the large metering disk 2 does not overlap with the medicine inlet 5, and the medicine does not fall into the large metering disk 2.

[0069] That is, first rotate the metering disk 2 forward so that the metering groove rotates to below the medicine inlet 5 of the medicine dropping disk 1, so that the medicine falls into the small metering groove 8; then rotate the metering disk 2 reversely so that the metering groove with the medicine rotates to above the medicine outlet 6 of the bottom medicine dropping disk 3, and the medicine falls from the medicine outlet 6.

[0070] When dispensing large amounts, the metering disk 2 needs to be rotated continuously so that the metering disk 2 rotates continuously in one direction. The small metering groove 8 and the large metering groove 7 both take medicine from the medicine inlet 5 and drop medicine from the medicine outlet 6.

[0071] Furthermore, the large metering groove 7, the small metering groove 8, the drug inlet 5 and the drug outlet 6 are all configured as fan-shaped holes.

[0072] Furthermore, an arc plate with the metering disk 2 as the center and a straight plate coinciding with the radius of the metering disk 2 are provided in the large metering groove 7 to divide the large metering groove 7 into a plurality of small fan-shaped holes.

[0073] The entire large metering groove 7 is divided into a plurality of small fan-shaped holes. When a large dose of granules is prepared, on the one hand, it can be avoided that when the large metering groove 7 takes medicine from the medicine inlet 5, the rotating large metering groove 7 cannot timely remove the granular medicine that has fallen into the large metering groove 7 from under the medicine inlet 5 due to the large single space of the large metering groove 7 and the inertia of the granular medicine, thereby affecting the downward drop of the medicine from the medicine inlet 5.

[0074] On the other hand, the granular medicine can be evenly distributed in the large metering groove 7. It is avoided that when the metering disk 2 rotates, the granular medicine is concentrated in the rear half of the large metering groove 7 due to inertia. The rear half here refers to the side of the large metering groove 7 that is relatively backward when the metering disk 2 rotates.

[0075] At the same time, when the evenly distributed granular medicine drops from the medicine outlet 6, the amount of medicine dropped per unit time will also be even.

[0076] In order to more clearly explain the specific arrangement of the large metering groove 7, the small metering groove 8, the medicine inlet 5 and the medicine outlet 6, a specific example is given here: there are no less than two groups of fan-shaped metering grooves on the metering plate 2, and each group of fan-shaped metering grooves is composed of multiple small fan-shaped holes in the outer circle and the inner circle; there are no less than two medicine outlets 6 on the bottom medicine drop plate 3; there are two medicine inlets 5 on the positioning medicine drop plate 1. Due to the angle difference between the inner and outer circles, the outer circle fan-shaped hole is one more angle fan-shaped hole from the center than the inner circle fan-shaped hole, and the extra fan-shaped hole is the small metering groove 8.

[0077] Furthermore, an annular groove 11 is provided at the bottom outer edge of the positioning medicine dropping plate 1, and the inner diameter of the metering plate 2 is equal to the outer diameter of the annular groove 11, so that the metering plate 2 can be nested outside the annular groove 11 to constrain the metering plate 2 to only rotate.

[0078] Furthermore, a screw through hole 9 is provided at the center of the bottom medicine dropping tray 3, and a center through hole 10 is provided at the center of the positioning medicine dropping tray 1, so that the bottom medicine dropping tray 3 and the positioning medicine dropping tray 1 can be fixedly connected by screws.

[0079] Optionally, a cylinder can be arranged at the center of the bottom medicine tray 3, and the cylinder fits the circular hole at the center of the metering tray 2, which can play a role in constraining the metering tray 2. At the same time, a screw through hole 9 is arranged on the cylinder, and the positioning medicine tray 1 and the bottom medicine tray 3 are fixedly connected by screws.

[0080] Furthermore, the hole in the middle of the positioning medicine drop tray 1 can be set to be rectangular, a rectangular block is set on the top of the cylinder, a screw through hole 9 is set in the middle of the rectangular block, the rectangular block is inserted into the rectangular hole, and then the positioning medicine drop tray 1 and the bottom medicine drop tray 3 are fixed by screws, completely eliminating the possibility of relative rotation between the positioning medicine drop tray 1 and the bottom medicine drop tray.

[0081] Furthermore, when the metering disk 2 rotates rapidly, excess granular medicine will pass through the gap between the metering disk 2 and the positioning medicine drop disk 1 and accumulate near the rotating shaft. After being crushed, the granular medicine will become compacted, which will hinder the rotation of the metering disk 2.

[0082] For this purpose, overflow ports 12 are evenly distributed on the inner circles of the large metering groove 7 and the small metering groove 8 on the metering disk 2. Excess granular medicine will enter the overflow ports 12 and be discharged from the medicine outlet 6 as the metering disk 2 rotates, so as to overflow the excess medicine powder.

[0083] Furthermore, some of the existing Chinese medicine granule dispensing bottle caps have a bottom-driven metering disk 2 that rotates, which occupies the medicine placement space and is not conducive to the overall design of the equipment; some have a single-sided drive for the metering disk 2 to rotate, and the uneven force on the bottle cap affects the flexibility of the drive and the service life of the bottle cap.

[0084] In order to solve the above-mentioned driving problem, the driving structure's action components outside the metering disk 2 and the medicine blocking disk 4 are symmetrically arranged so that the metering disk 2 and the medicine blocking disk 4 are evenly stressed when rotating.

[0085] It is understandable that the driving mechanism can also be used to fix the metering disk 2 and the medicine blocking disk 4 to keep them stationary.

[0086] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A medicine packing and metering device, characterized in that: It comprises a coaxially arranged positioning medicine drop tray (1), a metering tray (2), a bottom medicine drop tray (3) and a medicine blocking tray (4), wherein the positioning medicine drop tray (1), the metering tray (2) and the bottom medicine drop tray (3) are arranged in sequence; The positioning medicine drop tray (1) can be fixedly connected to the bottle mouth of the medicine bottle, and a through hole is provided at the center of the metering tray (2), and a connecting piece can pass through the through hole to fix the positioning medicine drop tray (1) and the bottom medicine drop tray (3); The metering plate (2) is rotatably connected between the positioning medicine dropping plate (1) and the bottom medicine dropping plate (3), and a metering groove is provided on the metering plate (2); The positioning medicine drop tray (1) and the bottom medicine drop tray (3) are respectively provided with a medicine inlet (5) and a medicine outlet (6), and the medicine inlet (5) and the medicine outlet (6) are staggered; A group of the drug outlets (6), a group of the drug inlet (5), and a group of the metering grooves constitute an adjustment hole group, and the metering bottle cap is provided with N groups of the adjustment hole groups; The medicine blocking plate (4) is arranged above or below any one of the positioning medicine dropping plate (1), the metering plate (2) and the bottom medicine dropping plate (3); The medicine blocking disk (4) is capable of rotating to block a group of the medicine inlets (5), a group of the metering grooves or a group of the medicine outlets (6).

2. A medicine packing and metering device according to claim 1, characterized in that: The inner circle of the medicine blocking plate (4) is composed of a blocking piece (13) and a notch, wherein the blocking piece (13) is used to block the medicine inlet (5), the metering groove or the medicine outlet (6), and the notch is used to allow the Chinese medicine particles to fall through; The inner edge of the blocking plate (13) is arranged in a circular ring shape, and a columnar structure nested with the circular ring is arranged in the center of the positioning medicine drop plate (1), the metering plate (2) or the bottom medicine drop plate (3) to constrain the position of the medicine blocking plate (4).

3. A medicine packing and metering device according to claim 1, characterized in that: The metering tank comprises a large metering tank (7) and a small metering tank (8); In a non-adjusting state, the drug inlet (5), the drug outlet (6), the small metering groove (8) and the large metering groove (7) are arranged clockwise or counterclockwise, and the drug outlet (6), the drug inlet (5), the large metering groove (7) and the small metering groove (8) in all the adjustment hole groups are arranged in the same direction; When a micro-amount of medicine is to be dispensed, the metering disk (2) is reciprocated to allow only the small metering groove (8) to reciprocate to take medicine from the medicine inlet (5) and drop medicine from the medicine outlet (6), thereby achieving micro-amount of medicine dispensing; When dispensing a large dose of medicine, the metering disk (2) is moved continuously and quickly in the same direction, so that the small metering groove (8) and the large metering groove (7) jointly take medicine from the medicine inlet (5) and drop medicine from the medicine outlet (6), thereby achieving large dose of medicine dispensing.

4. A medicine packing and metering device according to claim 3, characterized in that: The large metering groove (7), the small metering groove (8), the drug inlet (5) and the drug outlet (6) are all configured as fan-shaped holes.

5. A medicine packing and metering device according to claim 4, characterized in that: An arc-shaped plate with the measuring disc (2) as the center and a straight plate coinciding with the radius of the measuring disc (2) are arranged in the large measuring groove (7), so as to divide the large measuring groove (7) into a plurality of small fan-shaped holes.

6. A medicine packing and metering device according to claim 1, characterized in that: An annular groove (11) is provided at the outer edge of the bottom of the positioning medicine drop plate (1), and the inner diameter of the metering plate (2) is equal to the outer diameter of the annular groove (11), so that the metering plate (2) can be nested outside the annular groove (11) to constrain the metering plate (2) to only be able to rotate.

7. A medicine packing and metering device according to claim 1, characterized in that: The bottom medicine dropping tray (3) is provided with a screw through hole (9) at its center, and the positioning medicine dropping tray (1) is provided with a central through hole (10) at its center, so that the bottom medicine dropping tray (3) and the positioning medicine dropping tray (1) can be fixedly connected by screws.

8. A medicine packing and metering device according to claim 3, characterized in that: The metering plate (2) is evenly provided with medicine overflow openings (12) on the inner circles of the large metering groove (7) and the small metering groove (8) to facilitate overflow of excess medicine powder.

9. A medicine packing and metering device according to any one of claims 1 to 8, characterized in that: The action components of the driving structure outside the metering disc (2) and the medicine blocking disc (4) are symmetrically arranged so that the metering disc (2) is subjected to uniform force when rotating.

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