CN214824294U - Metering device for granular products - Google Patents

Abstract

The utility model discloses a metering device of granular products, which comprises a connecting cover, a medicine feeding shell, a metering disc and a medicine dropping disc, wherein an accommodating cavity is formed in the medicine feeding shell, the medicine feeding disc is formed on one side of the accommodating cavity, and the metering disc can rotate between the medicine feeding disc and the medicine dropping disc under the action of external force; be provided with at least one hole of adding medicine on the batch pan, be provided with at least one hole of falling the medicine on the batch pan that falls, and the hole of adding medicine and the hole of falling the medicine staggered arrangement in vertical direction, be provided with at least a set of measurement aperture circle that has a plurality of measurement holes on the measurement dish, and the measurement hole can be in proper order completely through the hole of adding medicine and the hole of falling the medicine at measurement dish pivoted in-process. The utility model discloses directly will connect lid, metering disc and the three structure combination of batch pan as an organic whole to the inner chamber that will connect the medicine feeding casing between lid and the metering disc is whole to be used for holding granular preparation, does not have any corner structure on the medicine feeding hole periphery of the bottom of medicine feeding casing, and then avoids granular preparation to pile up the jam inside the medicine feeding casing.

Description

Metering device for granular products

Technical Field

The utility model relates to a granular product measures technical field, concretely relates to metering device of granular product.

Background

Automatic blending of a traditional Chinese medicine granular preparation is an important link in a medicine dispensing process of a modern traditional Chinese medicine pharmacy, and automatic metering and medicine dropping are core processes in the automatic blending process.

In the prior art, for example, utility model patent No. 201910921051.0 discloses a porous metering device of granular preparation, it mainly comprises connecting cover, location minute batch pan, measurement dish and bottom, and the granular preparation that gets into from connecting the cover divides the batch pan by the location to divide the batch pan divide material and the measurement hole of blanking to the measurement dish in, and the rotation in-process of measurement dish is followed and is discharged in the medicine discharge hole on the bottom.

But the metering device of prior art in the location divide the batch pan to occupy the inside most space of metering device to the granular preparation limitation that metering device can hold is great, and in the long-time medicine in-process that falls, granular preparation piles up the jam at the corner of the batch pan of location easily, and then influences the precision of falling the medicine, even unable normal medicine that falls. Secondly, the overall structure of the metering device is compact and complex, the connection or fixation among all the parts is relatively complex, the operation failure rate of the metering device is increased, and the practicability of the manufactured metering device is weak.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a metering device of granule goods to solve among the prior art metering device structure complicacy and lead to the technical problem that the inner capacity is little and the fault rate is big.

In order to solve the above technical problem, the utility model particularly provides the following technical scheme:

the utility model provides a metering device of granular products, which comprises a connecting cover, a medicine feeding shell, a metering disc and a medicine dropping disc which are sequentially connected according to the medicine dropping sequence, wherein an accommodating cavity for bearing granular preparations to be metered and dropped is formed in the medicine feeding shell, the medicine feeding disc is formed on one side of the accommodating cavity close to the metering disc, the medicine feeding disc, the metering disc and the medicine dropping disc are arranged in a laminating way, and the metering disc can rotate between the medicine feeding disc and the medicine dropping disc under the action of external force; wherein the content of the first and second substances,

be provided with at least one hole of adding medicine on the batch pan that falls, just add medicine the hole with hole of adding medicine staggered arrangement in vertical direction be provided with at least a set of measurement hole circle that has a plurality of measurement holes on the measurement dish, just the measurement hole is in measurement dish pivoted in-process can pass through completely in proper order add medicine the hole with the hole of falling medicine to the realization is with single the automatic measurement of the capacity of measurement hole for the unit of measurement falls the medicine.

Preferably, the medicine feeding tray is provided with two medicine feeding holes, and the medicine falling tray is provided with two medicine falling holes.

Preferably, the number of metering hole rings is at least 2 groups, and the number of metering holes of a single ring of the metering hole ring is 7-14.

Preferably, a limiting assembly for restraining the deviation movement of the medicine feeding tray, the metering tray and the medicine falling tray is formed at the joint of the medicine feeding tray, the metering tray and the medicine falling tray.

Preferably, the limiting assembly comprises a limiting protruding sleeve formed at the center of the medicine feeding disc, an annular protruding column formed at the center of the medicine dropping disc, and an annular hollow column formed at the center of the metering disc, the annular hollow column is fixed in the limiting protruding sleeve, and the annular hollow column is movably arranged between the annular protruding column and the limiting protruding sleeve.

Preferably, the limiting protruding sleeve comprises a protruding sleeve outer edge integrally connected with the medicine feeding tray body and a protruding sleeve inner edge formed in the protruding sleeve outer edge, a protruding sleeve annular groove is formed between the protruding sleeve outer edge and the protruding sleeve inner edge, a protruding sleeve hollow groove is formed in the inner side of the protruding sleeve inner edge, and at least one key groove is formed in the outer wall surface of the protruding sleeve inner edge;

the annular convex column comprises a convex column outer edge and a convex column inner body arranged in the convex column outer edge, a convex column clamping groove is formed between the convex column outer edge and the convex column inner body, and at least one convex key is arranged on the inner wall surface of the convex column outer edge;

the inner body of the raised column is arranged in the hollow groove of the raised sleeve, the inner edge of the raised sleeve is arranged in the clamping groove of the raised column, and the outer edge of the raised column and the annular hollow column are both arranged in the annular groove of the raised column; and the outer edge of the raised column and the inner edge of the raised sleeve are fixed through the combined connection of the raised keys and the key grooves, and the annular hollow column is positioned between the outer edge of the raised column and the outer edge of the raised sleeve and can rotate.

Preferably, the limiting protrusion sleeve further comprises a first screw hole formed in the sleeve body on one side, close to the connecting cover, of the hollow groove of the protrusion sleeve, a second screw hole located in the same vertical direction as the first screw hole is formed in the center of the inner body of the protrusion column, and the medicine feeding disc and the medicine falling disc sequentially penetrate through the first screw hole, the hollow groove of the protrusion sleeve and the second screw hole through screws to be fixedly connected so as to limit the movement of the medicine feeding disc and the medicine falling disc in the vertical direction and the circumferential relative rotation.

Preferably, the number of the key slots is 2-4; the number of the raised keys is 2-4.

Preferably, the side wall of the connection cover and the side wall of the medicine feeding housing are connected by a screw.

Preferably, a toothed structure is provided on the outer surface of the metering disc.

Preferably, the medicine feeding shell and the medicine feeding tray are of an integrated structure.

Compared with the prior art, the utility model following beneficial effect has:

the utility model discloses directly will connect lid, metering disc and the three structure combination of batch pan as an organic whole to the inner chamber that will connect the medicine feeding casing between lid and the metering disc all is used for holding granular preparation, does not have any corner structure on the medicine feeding hole periphery of the bottom of the casing of feeding medicine (the batch pan), and then avoids granular preparation to pile up the jam inside the casing of feeding medicine.

The utility model discloses simplified current metering device's structural component to reached the same effect that the measurement more optimized even fell the medicine, the structural simplification has reduced metering device function fault rate, and the practicality is high, and is with low costs.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic perspective view of a metering device according to the present invention;

FIG. 2 is an isometric view of FIG. 1;

fig. 3 is a schematic perspective view of the medicine feeding housing of the present invention;

FIG. 4 is a perspective view of the drug delivery housing of FIG. 3 from another perspective;

FIG. 5 is an isometric view of FIG. 3;

fig. 6 is a schematic perspective view of the metering disc of the present invention;

FIG. 7 is an isometric view of FIG. 6;

fig. 8 is a schematic view of the three-dimensional structure of the medicine dropping tray of the present invention.

The reference numerals in the drawings denote the following, respectively:

10-applying the medicine to the shell; 20-a metering disc; 30-a medicine dropping tray; 40-a connecting cover; 50-a limiting assembly;

11-a cavity; 12-a medicine feeding tray; 13-medicine feeding hole;

21-a metering orifice; 22-a metering orifice ring; 23-a tooth-shaped structure;

31-a medicine dropping hole;

51-a limiting convex sleeve; 52-annular raised columns; 53-annular hollow column; 54-raised collar circular groove; 55-the protrusion is sleeved with the hollow groove; 56-raised sleeve inner edge; 57-a first screw hole; 58-second screw hole; 59-raised sleeve outer edge;

521-raised post outer edge; 522-raised column inner body; 523-protruding column clamping groove; 524-raised keys; 525-key groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a metering device for granular products, which comprises a connecting cover 40, a medicine feeding shell 10, a metering disc 20 and a medicine dropping disc 30 which are connected in sequence according to the medicine dropping order, wherein a containing cavity 11 for bearing granular preparations to be metered and dropped is formed in the medicine feeding shell 10, a medicine feeding disc 12 is formed on one side of the containing cavity 11 close to the metering disc 20, the medicine feeding disc 12, the metering disc 20 and the medicine dropping disc 30 are attached to each other, and the metering disc 20 can rotate between the medicine feeding disc 12 and the medicine dropping disc 30 under the action of external force; wherein the content of the first and second substances,

go up be provided with at least one medicine hole 13 on the medicine tray 12 it falls to be provided with at least one medicine hole 31 on the medicine tray 3 to fall, just go up medicine hole 13 with the hole 31 dislocation arrangement in vertical direction that falls be provided with at least a set of measurement hole circle 22 that has a plurality of measurement holes 21 on the measurement tray 20, just measurement hole 21 is in 20 pivoted in-process can pass through completely in proper order go up medicine hole 13 with the hole 31 that falls to realize with single the automatic measurement of measurement hole 21's capacity as measurement unit falls the medicine.

The granular preparation enters the cavity 11 of the medicine feeding shell 10 from the connecting cover 40 and is filled in the cavity 11, so that the granular preparation can completely fill the medicine feeding hole 13 in real time to enter the metering hole 21 at any time.

The metering disc 20 is rotated under the action of external force, the metering holes 21 are alternately and circularly overlapped and staggered with the medicine feeding holes 13, the granular preparation is circularly filled in the metering holes 21 under the action of gravity, medicine falling is carried out when the metering holes 21 are overlapped with the medicine falling holes 31, and the quantity of the granular preparation falling from the medicine falling holes 31 is calculated by taking the capacity of a single metering hole 21 as a metering unit.

In the embodiment, the connecting cover, the metering disc and the medicine dropping disc are directly combined into a whole, the inner cavity of the medicine feeding shell between the connecting cover and the metering disc is completely used for containing granular preparation, and no corner structure is arranged on the periphery of a medicine feeding hole at the bottom of the medicine feeding shell (the medicine feeding disc), so that the granular preparation is prevented from being accumulated and blocked in the medicine feeding shell.

The utility model discloses simplified current metering device's structural component to reached the same effect that the measurement more optimized even fell the medicine, the structural simplification has reduced metering device function fault rate, and the practicality is high, and is with low costs.

Besides the advantage of simplified structure, this embodiment can also improve the measurement accuracy of falling the medicine on the basis of the simplified structure, and the specific implementation is as follows:

in a preferred embodiment, two medicine feeding holes 13 are formed in the medicine feeding tray 12, two medicine dropping holes 31 are formed in the medicine dropping tray 30, and the two medicine feeding holes 13 are distributed on the medicine feeding tray 12 in a central symmetrical manner (i.e., on the same diameter line on the medicine feeding tray 12), and similarly, the two medicine dropping holes 31 are distributed on the medicine dropping tray 30 in a central symmetrical manner (i.e., on the same diameter line on the medicine dropping tray 30).

The number of the metering hole rings 22 is at least 2 groups, and the number of the metering holes 21 of a single-ring metering hole ring 22 is 7-14, which is far larger than the number of the medicine feeding holes 13 and the medicine dropping holes 31, and the main purposes are as follows: make every metering hole 21 have certain interval between the action of adding medicine to and the action of falling medicine at every turn, can avoid when the measuring disc rotational speed is great, metering hole 21 fails to add medicine completely or fall medicine completely.

The efficacy of each drop hole 31 is necessarily related to the rotation speed of the metering disc 20, a large rotation speed means that more metering holes 21 pass through the drop hole 31 per unit time, that is, more medicine drops from the drop hole 31 per unit time, however, if the rotation speed of the measuring disc 20 is too high, the time for overlapping the measuring hole 21 and the medicine dropping hole 31 is very short, so that the granular preparation in the metering hole 21 can not stably and completely fall into the medicine falling hole 31, thereby also influencing the metering precision of the dosage falling from the dosage falling hole 31, therefore, the dosage falling efficiency of the single dosage falling hole 31 of the prior metering device is not high, the rotating speed of the metering disc 20 is greatly limited, if the medicine dropping efficiency is improved, the metering precision is inevitably reduced, and errors are gradually accumulated in the process of continuously dropping the medicine by the metering device, so that the final medicine dropping amount is greatly different from the target value.

In particular, when the measuring hole 21 and the medicine dropping hole 31 are of the same size, the error becomes more significant.

With prior art 201910921051.0's utility model discloses a porous metering device of granule preparation as the contrast, its metering hole is the same with the quantity in hole of falling the powder, be promptly the metering hole after filling up the granule preparation, the unit interval that every rotated an adjacent hole of falling the powder then falls the medicine immediately, every metering hole is the action of getting into the powder of incessant execution in the short distance short time and the action of falling the powder, under this condition, the rotational speed to the metering disc has certain requirement, if the rotational speed of metering disc improves (the efficiency of falling the powder in hole is singly fallen in the purpose of improving), every of metering hole is got into the powder action and is fallen the interval between the action of the powder and is very short, then lead to the incomplete and the incomplete that falls the powder of getting into the powder in the metering hole very easily, thereby reduce the measurement precision, under this condition, ultimate error of falling the powder can accumulate gradually.

Moreover, if the medicine dropping holes are more, the error is accumulated more, and the defect of the medicine dropping holes with a large number is overcome, so that the metering device in the prior art cannot meet the requirement of simultaneously improving the medicine dropping efficiency, and can ensure the metering precision (reduce the error) and even improve the metering precision.

In the present embodiment, the relatively small number of the medicine dropping holes 31 and the relatively large number of the metering holes 21 in a single circle are matched with each other to realize efficient medicine dropping (the rotation speed can be increased) of the same medicine dropping hole 31, and simultaneously, the metering precision can be very high.

In the present embodiment, the number of the metering holes 21 may be set relatively small, so as to further improve the metering accuracy, and when the volume of the metering holes 21 is small, a single metering hole ring 22 may arrange more metering holes 21.

When the quantity of metering hole 21 is more, what the metering hole 21 just can set up is less, means that metering hole 21 and the big difference of the size of the hole 31 that falls of medicine are big more equally, and under this condition, metering hole 21 is through the hole that falls of medicine, just can fall the medicine more easily completely to also can further improve the rotational speed and improve the precision, kill two birds with one stone.

In order to highlight the relationship and benefit between the number of metering holes 21 and the number of medicine feeding holes 13 and the number of medicine dropping holes 31 in the present embodiment, the following description will be made by taking two medicine feeding holes 12 and two medicine dropping holes 31 as a cross structure, the number of metering hole rings 22 as 2, and the number of metering holes per metering hole ring 22 as 12 (see fig. 6) as an example:

after the metering holes 21 are loaded from 1 of the loading holes 13, the medicines need to fall in the loading holes 31 after passing through the paths of 1/4 metering disks 20, the metering holes 21 after falling are overlapped with the loading holes 13 after continuing passing through the paths of 1/4 metering disks to load the medicines, and the process is repeated, namely, each metering hole 21 can fall after being loaded for a period of time, and the medicines falling from the same loading hole 31 are loaded after a plurality of metering holes 21 are sequentially loaded.

The quantity in measurement hole 21 is far greater than the quantity in the hole 31 that falls to medicine, and simultaneously, the size in measurement hole 21 also is far less than the hole 31 that falls to medicine, if improve the rotational speed of measurement dish 20, then the measurement hole 21 through the hole 31 that falls to medicine in the unit interval is more, then the medicine efficiency that falls is higher, because measurement hole 21 is less than in the hole 31 that falls to medicine, consequently, the rotational speed of measurement dish can not exert an influence to the complete medicine that falls in measurement hole 21. The metering device of the present embodiment can improve both the medicine dropping efficiency and the medicine dropping accuracy of the medicine dropping hole 31.

And a limiting assembly 50 for restricting the deviation movement of the medicine feeding tray 12, the metering tray 20 and the medicine falling tray 30 is formed at the joint of the medicine feeding tray 12, the metering tray 20 and the medicine falling tray 30. The purpose is to enable the medicine feeding tray 12, the metering tray 20 and the medicine falling tray 30 to form a detachable integral structure, and enable the key structures (the medicine feeding tray 12, the metering tray 20 and the medicine falling tray 30) to form a limiting and connecting structure through the structures of the key structures, so that the structural composition of the whole metering device is simplified, the cost of products can be reduced, and the failure rate of the products is reduced.

A preferred embodiment of the limiting assembly 50 is provided below, wherein the limiting assembly 50 includes a limiting convex sleeve 51 formed at the center of the upper tray 12, an annular convex column 52 formed at the center of the lower tray 3, and an annular hollow column 53 formed at the center of the metering tray 20, the annular hollow column 53 is fixed in the limiting convex sleeve 51, and the annular hollow column 53 is movably disposed between the annular convex column 52 and the limiting convex sleeve 51.

Spacing assembly 50 mainly forms the nested structure and the columnar structure of supporting connection through the center at last batch pan 12, metering disc 20 and batch pan 30 that falls, and make metering disc 20 can let its center rotate, and limit the removal of batch pan 12, metering disc 20 and batch pan 30 that falls in vertical direction and horizontal direction, and the relative rotation of batch pan 12 and batch pan 30 in the restriction, realization that can be more steady is measured and is fallen the medicine process.

The limiting convex sleeve 51 comprises a convex sleeve outer edge 59 integrally connected with the body of the upper medicine tray 12 and a convex sleeve inner edge 56 formed in the convex sleeve outer edge 59, a convex sleeve annular groove 54 is formed between the convex sleeve outer edge 59 and the convex sleeve inner edge 56, a convex sleeve hollow groove 55 is formed on the inner side of the convex sleeve inner edge 56, and at least one key groove 525 is formed on the outer wall surface of the convex sleeve inner edge 56; the annular convex column 52 comprises a convex column outer edge 521 and a convex column inner body 522 arranged in the convex column outer edge 521, a convex column clamping groove 523 is formed between the convex column outer edge 521 and the convex column inner body 522, and at least one convex key 524 is arranged on the inner wall surface of the convex column outer edge 521; the inner body 522 of the raised column is disposed in the hollow groove of the raised sleeve, the inner edge 56 of the raised sleeve is disposed in the locking groove 523 of the raised column, and the outer edge 521 of the raised column and the annular hollow column 53 of the raised column are both disposed in the annular groove 54 of the raised sleeve; and the outer edge 521 of the raised column and the inner edge 56 of the raised sleeve are fixed by the combined connection of the raised key 524 and the key slot 525 (the key slot 525 is vertically arranged along the inner edge 56 of the raised sleeve, the raised key 524 is downwards arranged along the outer edge 521 of the raised column, the limiting raised sleeve 51 and the annular raised column 52 are directly combined into a whole by the clamping of the raised key 524 and the key slot 525, the key slot 525 and the raised key 524 which are vertically downwards arranged restrict the relative rotation of the limiting raised sleeve 51 and the annular raised column 52, and can only relatively move in the vertical direction), and the annular hollow column 53 is positioned between the outer edge 521 of the raised column and the outer edge 59 of the raised sleeve and can rotate (because the annular hollow column 53 has no restriction structure between the outer edge 521 of the raised column and the outer edge 59 of the raised sleeve, so that it can rotate).

Under the normal circumstances of falling the medicine of metering device, because the frictional force effect between keyway 525 and protruding key 524, general spacing bellying cover 51 and annular bellying post 52 are also difficult to take place to remove in the up-and-down direction, in order to further fix spacing bellying cover 51 and the relative motion of annular bellying post 52 in vertical direction (the direction of falling the medicine), this embodiment further provides spacing bellying cover 51 and the protruding post 52 of annular fixed knot structure or fixed mode in vertical direction, specifically as follows:

the limiting convex sleeve 51 further comprises a first screw hole 57 arranged on the sleeve body on one side, close to the connecting cover 40, of the convex sleeve hollow groove 55, a second screw hole 58 which is located in the same vertical direction as the first screw hole 57 is arranged at the center of the convex column inner body 522, and the upper medicine tray 12 and the medicine falling tray 3 sequentially penetrate through the first screw hole 57, the convex sleeve hollow groove 55 and the second screw hole 58 through screws to be fixedly connected so as to limit the vertical movement and circumferential relative rotation of the upper medicine tray 12 and the medicine falling tray 30.

Wherein, the number of the key slots 525 is 2-4; the number of the raised keys 524 is 2-4, preferably 3 in this embodiment, and 3 key slots 525 and 3 raised keys 524 are uniformly distributed.

The side wall of the connecting cover 40 and the side wall of the upper housing 10 are connected by screws, or other fasteners.

The outer surface of the metering disc 20 is provided with a tooth-shaped structure 23, which is convenient for being butted with an external driving device and realizes continuous rotation under the power of the driving device.

Wherein, the medicine feeding shell 10 and the medicine feeding tray 12 are of an integrated structure.

Although the embodiment seems to delete part of the structure and improves the number and size relationship between the metering holes and the medicine feeding holes and the medicine falling holes, the purposes of simplifying the structure (reducing the cost), improving the medicine falling efficiency and improving the metering precision are achieved at the same time.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims (11)

1. The metering device of the granular product is characterized by comprising a connecting cover (40), a medicine feeding shell (10), a metering disc (20) and a medicine dropping disc (30) which are sequentially connected according to a medicine dropping sequence, wherein a containing cavity (11) for bearing granular preparation to be metered and dropped is formed in the medicine feeding shell (10), a medicine feeding disc (12) is formed on one side, close to the metering disc (20), of the containing cavity (11), the medicine feeding disc (12), the metering disc (20) and the medicine dropping disc (30) are arranged in a fit manner, and the metering disc (20) can rotate between the medicine feeding disc (12) and the medicine dropping disc (30) under the action of external force; wherein the content of the first and second substances,

go up be provided with at least one hole of adding medicine (13) on batch pan (12) it falls to be provided with at least one hole of adding medicine (31) on the dish of adding medicine (30), just go up hole of adding medicine (13) with hole of adding medicine (31) dislocation arrangement in vertical direction be provided with at least a set of measurement hole circle (22) that have a plurality of measurement holes (21) on the measurement dish (20), just measurement hole (21) are in measurement dish (20) pivoted in-process can pass through completely in proper order go up hole of adding medicine (13) with hole of adding medicine (31) falls in order to realize with single the automatic metering of the capacity of measurement hole (21) for the unit of measurement falls the medicine.

2. A metering device for a granular product according to claim 1, characterized in that the loading tray (12) is provided with two loading holes (13) and the dropping tray (30) is provided with two dropping holes (31).

3. A metering device for a particulate product according to claim 1, wherein the number of metering orifice rings (22) is at least 2 groups and the number of metering orifices (21) per metering orifice ring (22) is 7-14.

4. A metering device for a granular product according to claim 1, wherein a limiting assembly (50) is formed at the junction of the loading tray (12), the metering tray (20) and the dropping tray (30) for limiting the deviation movement of the loading tray (12), the metering tray (20) and the dropping tray (30) relative to each other.

5. A metering device for granular products according to claim 4, characterized in that the limiting assembly (50) comprises a limiting convex sleeve (51) formed in the center of the upper tray (12), an annular convex column (52) formed in the center of the lower tray (3), and an annular hollow column (53) formed in the center of the metering tray (20), wherein the annular hollow column (53) is movably arranged between the annular convex column (52) and the limiting convex sleeve (51).

6. A particulate product metering device according to claim 5, wherein the limiting boss (51) comprises a boss outer rim (59) integrally connected with the main body of the medicine loading tray (12), and a boss inner rim (56) formed in the boss outer rim (59), a boss ring-shaped groove (54) is formed between the boss outer rim (59) and the boss inner rim (56), a boss hollow groove (55) is formed inside the boss inner rim (56), and at least one key groove (525) is provided on the outer wall surface of the boss inner rim (56);

the annular convex column (52) comprises a convex column outer edge (521) and a convex column inner body (522) arranged in the convex column outer edge (521), a convex column clamping groove (523) is formed between the convex column outer edge (521) and the convex column inner body (522), and at least one convex key (524) is arranged on the inner wall surface of the convex column outer edge (521);

the inner body (522) of the raised column is arranged in the hollow groove (55) of the raised sleeve, the inner edge (56) of the raised sleeve is arranged in the clamping groove (523) of the raised column, and the outer edge (521) of the raised column and the annular hollow column (53) are both arranged in the annular groove (54) of the raised ring; and the outer edge (521) of the raised column and the inner edge (56) of the raised sleeve are fixed through the combined connection of the raised key (524) and the key slot (525), and the annular hollow column (53) is positioned between the outer edge (521) of the raised column and the outer edge (59) of the raised sleeve and can rotate.

7. The metering device of the granular product as claimed in claim 6, wherein the limiting boss (51) further comprises a first screw hole (57) arranged on the sleeve body at one side of the boss hollow groove (55) close to the connecting cover (40), a second screw hole (58) which is positioned in the same vertical direction as the first screw hole (57) is arranged at the center of the boss inner body (522), and the medicine feeding tray (12) and the medicine dropping tray (3) are fixedly connected through the first screw hole (57), the boss hollow groove (55) and the second screw hole (58) in sequence by screws so as to limit the vertical movement and the circumferential relative rotation of the medicine feeding tray (12) and the medicine dropping tray (30).

8. A device for metering a particulate product according to claim 6, wherein the number of keyways (525) is 2-4; the number of the raised keys (524) is 2-4.

9. A dosing device for particulate products according to claim 1, characterized in that the side walls of said connection cap (40) and the side walls of said dosing housing (10) are connected by screws.

10. A dosing device for particulate products according to claim 1, characterized in that a tooth-like structure (23) is provided on the outer surface of the dosing disc (20).

11. A particulate product metering device as claimed in claim 1, wherein the dosing housing (10) is of integral construction with the dosing tray (12).

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