Damp-proof traditional Chinese medicine dispensing cabinet

Abstract

The utility model discloses a moistureproof traditional Chinese medicine dispensing medicine cabinet in the technical field of moistureproof storage of medicines. The moistureproof traditional Chinese medicine dispensing medicine cabinet comprises a rectangular main frame and a plurality of medicine lattices arranged in the main frame in a matrix mode. A storage cavity with a circular section is arranged in each medicine grid, and the front end of each medicine grid is open, so that a medicine bottle can be inserted into each storage cavity; a sealing ring is fixedly installed on the inner wall of each medicine grid and can make close contact with the outer wall of the bottle body or the outer wall of the dispensing bottle cap so that a sealing space for sealing the medicine bottle can be formed. By arranging a plurality of independent medicine grids, the time that medicine bottles are exposed in the air in the single dispensing process is shortened, the number of the medicine bottles exposed in the air in the single dispensing process is reduced, and the damp-proof effect is good. An externally-hung door curtain, moisture-proof equipment, an electric cabinet and other related auxiliary equipment do not need to be installed and used, the structure is simple, light and thin, and the size is small.

Description

Technical Field

[0001] The utility model relates to the technical field of moisture-proof storage of medicines, in particular to a moisture-proof Chinese medicine dispensing cabinet. Background Art

[0002] The existing moisture-proof Chinese medicine dispensing cabinet generally comprises a base, a sheet metal structure matrix reinforcement frame composed of a top plate and side plates installed on the base, and a back plate behind the frame.

[0003] In order to prevent the medicinal materials in the medicine cabinet from getting damp and to ensure their quality, it is necessary to install an external door curtain on the front side of the medicine cabinet. The external door curtain can block some humid air and is opened and closed once at the beginning and end of each adjustment.

[0004] An electric control box is also provided in the base of the medicine cabinet for driving the moisture-proof device to keep the inside of the medicine cabinet relatively dry during the period between the opening and closing of the external door curtain.

[0005] However, since more than one medicinal material needs to be taken for each adjustment, the opening time of the external door curtain is relatively long, which will make all the medicine bottles exposed to the air for a long time, which is not conducive to the moisture-proof preservation of the medicinal materials.

[0006] Moreover, due to the arrangement of an electric control box, moisture-proof equipment and an external door curtain, the moisture-proof Chinese medicine dispensing cabinet has a complicated and heavy structure and a large volume. Utility Model Content

[0007] The utility model aims to provide a moisture-proof Chinese medicine dispensing cabinet to solve the technical problems in the prior art that the opening time of the external door curtain during dispensing is relatively long, which makes all medicine bottles exposed to the air for a long time, which is not conducive to the moisture-proof preservation of medicinal materials, and the moisture-proof Chinese medicine dispensing cabinet has a complicated and heavy structure and a large volume.

[0008] In order to solve the above technical problems, the utility model specifically provides a moisture-proof Chinese medicine dispensing cabinet, comprising a rectangular main frame and a plurality of medicine grids arranged in a matrix in the main frame;

[0009] A storage cavity with a circular cross section is provided in the medicine grid, and the front end of the medicine grid is open to allow medicine bottles to be inserted into the storage cavity;

[0010] A sealing ring is fixedly mounted on the inner wall of the medicine grid, and the sealing ring can be in close contact with the outer wall of the bottle body or the dispensing bottle cap to form a sealed space that seals the medicine bottle.

[0011] As a preferred embodiment of the utility model, rectangular positioning plates are connected to the outer walls of the front and rear sides of the medicine grid;

[0012] Insert blocks or insertion holes are arranged on the side of the positioning plate, so that the adjacent medicine grids can be plugged into each other, and the medicine grids at the edges can be plugged into the strip-shaped slots on the frame.

[0013] As a preferred embodiment of the utility model, the inner wall of the insertion hole on the front positioning plate and the edge of the insertion block are provided with raised racks to prevent the adjacent medicine grids from being misaligned front to back.

[0014] As a preferred embodiment of the utility model, an indicator light is provided on the positioning plate on the front side of each medicine grid;

[0015] A circuit board is fixedly mounted on one or more side walls of the main frame, and each indicator light is connected to the near side circuit board through a wire;

[0016] The Chinese medicine dispensing cabinet is also equipped with a human-computer interaction panel, which is equipped with a virtual medicine grid position model of a software component, and the virtual medicine grid corresponds one-to-one with the medicine grid in the main frame;

[0017] When the operator selects a medicine bottle through the human-computer interaction panel, the indicator light of the corresponding physical medicine grid lights up to accurately indicate the location of the selected medicine bottle.

[0018] As a preferred embodiment of the utility model, the distance between any two opposite sides of the positioning plate is greater than the diameter of the medicine grid, so that there is a gap between adjacent medicine grids for the wire to pass through.

[0019] As a preferred implementation mode of the utility model, the main frame is formed by connecting a plurality of square steel pipes and aluminum profiles, and the strip-shaped slots are arranged on the aluminum profiles.

[0020] As a preferred embodiment of the utility model, a bottle inserting check valve and a bottle removing check valve are fixedly installed at the rear end of the medicine grid;

[0021] When the pressure difference between the storage cavity and the outside is greater than the opening critical value of the bottle insertion one-way valve, the bottle insertion one-way valve is in an open state to discharge the gas in the storage cavity to the outside;

[0022] When the pressure difference between the outside and the storage cavity is greater than the opening critical value of the bottle-pulling one-way valve, the bottle-pulling one-way valve is in an open state to input gas into the storage cavity.

[0023] As a preferred embodiment of the utility model, the inner wall of the medicine compartment is recessed outward to form an annular groove, and the groove is used to place the sealing ring.

[0024] As a preferred embodiment of the present invention, at least two layers of sealing rings are arranged on the inner ring wall of the sealing ring, and the plurality of sealing rings can be in close contact with the outer wall of the bottle body or the regulating bottle cap to improve the sealing effect.

[0025] As a preferred embodiment of the utility model, the end of the slot is extended rearward to be provided with a threaded portion, and the threaded portion is provided with an internal thread;

[0026] The threaded portion is connected with a tail cover, and the bottle inserting one-way valve and the bottle removing one-way valve are both arranged on the tail cover;

[0027] The front end of the tail cover can contact the sealing ring.

[0028] Compared with the prior art, the utility model has the following beneficial effects:

[0029] By setting up multiple independent medicine grids, each medicine bottle is inserted into a medicine grid and sealed. When dispensing, after a medicinal material is dispensed, the medicine bottle can be immediately inserted back into the medicine grid, shortening the time the medicine bottle is exposed to the air during a single dispensing process; medicine bottles that are not used in this dispensing are always inserted into the medicine grid and kept sealed, reducing the number of medicine bottles exposed to the air during a single dispensing process, and having an excellent moisture-proof effect.

[0030] There is no need to install and use external door curtains, moisture-proof equipment, electric control boxes and other related auxiliary equipment. The structure is simple, thin and small in size. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 This is a schematic diagram of the structure of the Chinese medicine cabinet of the utility model when it is full of medicine bottles;

[0033] Figure 2 This is a schematic diagram of the Chinese medicine cabinet of the utility model when no medicine bottles are inserted;

[0034] Figure 3 It is a structural schematic diagram of the main frame and circuit board in the utility model;

[0035] Figure 4 This is a schematic diagram of the split structure of the Chinese medicine box of the utility model;

[0036] Figure 5It is a schematic diagram of the structure of two adjacent medicine compartments plugged in the utility model;

[0037] Figure 6 for Figure 5 A rear view schematic diagram of

[0038] Figure 7 It is a schematic diagram of the structure when the medicine grid at the edge of the utility model is connected to the main frame;

[0039] Figure 8 for Figure 7 A top view of a Chinese medicine grid with the upper part removed;

[0040] Fig. 9 It is a schematic diagram of the gap between adjacent medicine grids in the utility model;

[0041] Fig.10 It is a schematic diagram of the cross-sectional structure of the Chinese medicine box of the utility model;

[0042] Fig.11 This is a schematic diagram of the structure of the Chinese medicine bottle of the utility model when it is inserted into the deepest part of the medicine grid;

[0043] Fig.12 for Fig.11 A magnified schematic diagram of part A;

[0044] Fig.13 This is a schematic diagram of the structure of the utility model when the Chinese medicine bottle just contacts the sealing ring;

[0045] Fig.14 It is a structural schematic diagram of an existing medicine cabinet in the utility model.

[0046] The numbers in the figure represent the following:

[0047] 1-medicine grid, 2-sealing ring, 3-dispensing bottle cap, 4-medicine bottle, 5-sealed space, 6-bottle insertion check valve, 7-bottle removal check valve, 8-slot, 9-sealing ring, 10-threaded part, 11-tail cover, 12-main frame, 13-positioning plate, 14-insertion block, 15-jack, 16-strip slot, 17-rack, 18-square steel pipe, 19-aluminum profile, 20-indicator light, 21-circuit board, 22-gap, 23-storage cavity, 24-external door curtain, 25-electric control box, 26-back panel. DETAILED DESCRIPTION

[0048] 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.

[0049] like Figure 1 , Figure 2 , Figure 4 and Fig.11 As shown, the utility model specifically provides a moisture-proof Chinese medicine dispensing cabinet, comprising a rectangular main frame 12 and a plurality of medicine grids 1 arranged in a matrix in the main frame 12;

[0050] A storage cavity 23 with a circular cross section is provided in the medicine grid 1, and the front end of the medicine grid 1 is open to allow the medicine bottle 4 to be inserted into the storage cavity 23;

[0051] A sealing ring 2 is fixedly mounted on the inner wall of the medicine grid 1 , and the sealing ring 2 can be in close contact with the outer wall of the bottle body or the dispensing bottle cap 3 to form a sealed space 5 for sealing the medicine bottle 4 .

[0052] The principle of using the above storage structure to seal and store medicine bottles 4 is:

[0053] The sealing ring 2 fits tightly against the smooth bottle body of the medicine bottle 4 or the smooth outer wall of the dispensing bottle cap 3, blocking the exchange of air and water vapor inside and outside the sealing ring 2, and forming a sealed space 5 between the sealing ring 2 and the rear end of the medicine grid 1. The dispensing bottle cap 3 of the medicine bottle 4 is located in the sealed space 5, thereby achieving a sealed and moisture-proof effect.

[0054] Compared with the existing medicine cabinet, the present invention has better moisture-proof effect, and the specific reasons are as follows:

[0055] Each medicine grid 1 corresponds to a medicine bottle 4. When dispensing, it is only necessary to pull out the medicine bottle 4 corresponding to the medicinal material to be dispensed from the medicine grid 1, and then put the medicine bottle 4 into the dispensing device for dispensing.

[0056] The medicine bottles 4 not used in this dispensing are always inserted in the medicine grid 1 to maintain a sealed state, thereby reducing the number of medicine bottles 4 exposed to the air during a single dispensing process.

[0057] At the same time, during the dispensing process, after one medicinal material is dispensed, the medicine bottle 4 can be immediately inserted back into the medicine grid 1, thereby shortening the time that the medicine bottle 4 is exposed to the air during a single dispensing process.

[0058] That is, the moisture-proof effect is improved by reducing the number of medicine bottles 4 exposed during preparation and the exposure time.

[0059] While achieving excellent moisture-proof effect, there is no need to install and use external door curtains 24, moisture-proof equipment, electric control boxes 25 and other related auxiliary equipment. The structure is simple, thin and small in size.

[0060] In addition, compared with the existing medicine cabinet, the present invention has a simpler structure and is easier to use. The specific reasons are as follows:

[0061] The present invention uses an ingenious design to make the medicine bottle 4, the sealed object, cooperate with the medicine grid 1 and the sealing ring 2 to form a sealed environment. The medicine bottle 4 is both the sealed object and one of the components for creating the sealed environment, making the structure more streamlined.

[0062] The formation or release of the sealed environment depends entirely on the insertion or removal of the medicine bottle 4 into or out of the medicine compartment 1. That is, the action of inserting the medicine bottle 4 into the medicine compartment 1 in the present invention is equivalent to the two actions of placing the medicine bottle 4 into the medicine cabinet and then closing the external door curtain in the traditional medicine cabinet, and the use steps are simpler.

[0063] Adjacent medicine grids 1 and between the medicine grids 1 and the main frame 12 need to be connected and fixed to a certain extent, so as to arrange the medicine grids 1 neatly on the one hand and prevent the medicine grids 1 from falling off the main frame 12 on the other hand.

[0064] There are various fixing methods, for example, screw fixing, block fixing, clamping fixing and the like.

[0065] like Figure 5-Figure 8 As shown, the present invention is fixed by plugging and limiting, specifically as follows:

[0066] Rectangular positioning plates 13 are connected to the outer walls of the front and rear sides of the medicine grid 1;

[0067] Insert blocks 14 or insertion holes 15 are provided on the side of the positioning plate 13, so that adjacent medicine grids 1 can be plugged into each other, and the medicine grids 1 at the edges can be plugged into the strip-shaped slots 16 on the frame.

[0068] For example, for the medicine grid 1 that is not connected to the main frame 12, the plug blocks 14 can be provided on the left and lower sides of the positioning plate 13, and the plug holes 15 can be provided on the upper and right sides.

[0069] When assembling the medicine cabinet, first fix and splice the frames on the lower side, left side and right side, and then install the medicine grids 1 in order from bottom to top, so that adjacent medicine grids 1 are plugged into each other, and the edge medicine grids 1 are plugged into the strip slots 16 on the main frame 12, and finally install the top frame to clamp and fix multiple medicine grids 1 in the rectangular main frame 12.

[0070] It should be noted that, since the insert blocks 14 are disposed on both the front and rear positioning plates 13 , two parallel strip-shaped slots 16 should be disposed on each side of the main frame 12 .

[0071] Furthermore, when a medicine grid 1 is in the frame, its degrees of freedom in the up, down, left, and right directions are all constrained. At this time, it is necessary to constrain the degrees of freedom in the front and back directions of the medicine grid 1. The present invention adopts the following method:

[0072] The inner wall of the insertion hole 15 on the front positioning plate 13 and the edge of the insertion block 14 are both provided with raised racks 17 to prevent the adjacent medicine grids 1 from being misaligned front to back.

[0073] Furthermore, since there are hundreds of medicine compartments 1 in a medicine cabinet, in order to accurately find the medicine bottle 4 to be taken when dispensing, the present invention adopts the following measures:

[0074] An indicator light 20 is provided on the front positioning plate 13 of each medicine grid 1;

[0075] A circuit board 21 is fixedly mounted on one or more side walls of the main frame 12, and each indicator light 20 is connected to the near side circuit board 21 via a wire;

[0076] The Chinese medicine dispensing cabinet is also equipped with a human-machine interaction panel, which is equipped with a virtual medicine grid position model of a software component, and the virtual medicine grid corresponds one-to-one with the medicine grid 1 in the main frame 12;

[0077] When the operator selects a medicine bottle 4 through the human-machine interaction panel, the indicator light 20 of the corresponding physical medicine grid 1 lights up to accurately indicate the location of the selected medicine bottle 4 .

[0078] Furthermore, the wires of a conventional medicine cabinet are routed on the back of the medicine cabinet. In order to protect the wires, a back panel 26 needs to be provided on the back of the medicine cabinet to prevent human hands from touching it and to make the visual appearance neat.

[0079] However, the existence of the back plate 26 not only increases the cost, but is also not conducive to the installation and removal of the sealing cover. Therefore, the present invention further optimizes the routing of the wires based on the medicine grid 1, as follows:

[0080] like Fig. 9 As shown, the distance between any two opposite sides of the positioning plate 13 is greater than the diameter of the medicine grid 1, so that there is a gap 22 between adjacent medicine grids 1 for the wire to pass through.

[0081] Furthermore, if Figure 3 As shown, the main frame 12 is formed by connecting a plurality of square steel tubes 18 and aluminum profiles 19 , and the strip slots 16 are arranged on the aluminum profiles 19 .

[0082] For aesthetic and safety considerations, side panels can also be connected to the outside of the main frame 12 by screws, so that the main frame 12 and the medicine grid 1 inside can be concealed by the side panels.

[0083] Furthermore, during the bottle insertion process, the sealing ring 9 is in close contact with the outer wall of the bottle body or the dispensing bottle cap 3, thereby preventing the exchange flow between the storage cavity 23 and the external gas.

[0084] At this point you will face a problem:

[0085] If the medicine bottle 4 is not further inserted into the storage space 23 , the medicine bottle 4 may be easily moved outwards and lose contact with the sealing ring 2 when affected by factors such as cabinet vibration.

[0086] If the medicine bottle 4 is further inserted inward, the gas in the sealed space 5 will be gradually compressed.

[0087] On the one hand, the compressed gas will create resistance to the bottle insertion action.

[0088] On the other hand, even if the resistance generated by the compressed air is overcome by manpower and the medicine bottle 4 is inserted deep into the storage cavity 23, the air pressure in the sealed space 5 will become very high. When the person releases the medicine bottle 4, the strong air pressure will overcome the friction between the medicine bottle 4 and the sealing ring 2 and push the medicine bottle 4 out.

[0089] like Figure 10-13 As shown, the utility model takes the following measures to overcome the above problems:

[0090] A bottle-insertion one-way valve 6 is fixedly installed at the rear end of the medicine grid 1. When the pressure difference between the storage cavity 23 and the outside is greater than the opening critical value of the bottle-insertion one-way valve 6, the bottle-insertion one-way valve 6 is in an open state to discharge the gas in the storage cavity 23 to the outside.

[0091] Not only can the medicine bottle 4 be inserted into the deep part of the storage cavity 23 to prevent the medicine bottle 4 from being easily separated from the sealing ring 2, but it can also reduce the resistance of the bottle insertion action to achieve the purpose of labor saving.

[0092] Furthermore, if the air pressure in the sealed space 5 is low after the bottle is inserted, and the medicine bottle 4 is inserted deeper, then during the process of pulling out the medicine bottle 4, the air pressure in the sealed space 5 will continue to decrease, forming a negative pressure, which will create resistance to the bottle pulling action.

[0093] To this end, the present invention also fixes a bottle-pulling one-way valve 7 at the rear end of the medicine grid 1. When the pressure difference between the outside and the storage cavity 23 is greater than the opening critical value of the bottle-pulling one-way valve 7, the bottle-pulling one-way valve 7 is in an open state to input gas into the storage cavity 23.

[0094] Specifically, the bottle inserting one-way valve 6 is attached to the outside of the tail cover 11 , and the bottle removing one-way valve 7 is attached to the inside of the tail cover 11 .

[0095] Furthermore, in order to keep the sealing ring 2 in close contact with the medicine bottle 4 and prevent the medicine bottle 4 from driving the sealing ring 2 to move when the medicine bottle 4 is inserted or removed, the following design is made for the installation of the sealing ring 2:

[0096] The inner wall of the medicine compartment 1 is recessed outward to form an annular groove 8, and the groove 8 is used to place the sealing ring 2.

[0097] When the medicine bottle 4 attempts to move the sealing ring 2 by means of friction, the locking groove 8 can play a limiting role, preventing the sealing ring 2 from moving toward the front end or the rear end of the medicine compartment 1 along with the medicine bottle 4 .

[0098] Furthermore, at least two layers of sealing rings 9 are arranged on the inner ring wall of the sealing ring 2, and the multiple sealing rings 9 can be in close contact with the outer wall of the bottle body or the dispensing bottle cap 3 to improve the sealing effect.

[0099] Furthermore, in order to facilitate the installation and replacement of the sealing ring 2, the present invention has the following designs:

[0100] A threaded portion 10 is provided at the end of the slot 8 and extends rearward. The threaded portion 10 is provided with an internal thread.

[0101] The threaded portion 10 is connected with a tail cover 11 , and both the bottle inserting one-way valve 6 and the bottle removing one-way valve 7 are arranged on the tail cover 11 .

[0102] The front end of the tail cover 11 can contact the sealing ring 2; that is, the end surface of the tail cover 11 serves as a component surface of the slot 8, and the sealing ring 2 can be easily installed and replaced by simply loosening and removing the tail cover 11.

[0103] At the same time, the detachable tail cover 11 is also convenient for cleaning the storage cavity 23 of the medicine grid 1.

[0104] 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 moisture-proof Chinese medicine dispensing cabinet, characterized in that: It comprises a rectangular main frame (12) and a plurality of medicine grids (1) arranged in a matrix in the main frame (12); The medicine grid (1) is provided with a storage cavity (23) with a circular cross section, and the front end of the medicine grid (1) is open so that a medicine bottle (4) can be inserted into the storage cavity (23); A sealing ring (2) is fixedly mounted on the inner wall of the medicine grid (1), and the sealing ring (2) can be in close contact with the outer wall of the bottle body or the dispensing bottle cap (3), so as to form a sealed space (5) that seals the medicine bottle (4); Rectangular positioning plates (13) are connected to the outer walls of the front and rear sides of the medicine grid (1); The side of the positioning plate (13) is provided with an insert block (14) or an insert hole (15), so that the adjacent medicine grids (1) can be plugged into each other, and the medicine grids (1) at the edge can be plugged into the strip-shaped slots (16) on the frame; An indicator light (20) is provided on the positioning plate (13) at the front side of each medicine grid (1); A circuit board (21) is fixedly arranged on one or more side walls of the main frame (12), and each of the indicator lights (20) is connected to the circuit board (21) on the proximal side via a wire; The Chinese medicine dispensing cabinet is also equipped with a human-machine interaction panel, the human-machine interaction panel is equipped with a virtual medicine grid position model of a software component, and the virtual medicine grid corresponds one-to-one with the medicine grid (1) in the main frame (12); When the operator selects a medicine bottle (4) through the human-machine interaction panel, the indicator light (20) of the corresponding physical medicine grid (1) lights up to accurately indicate the location of the selected medicine bottle (4).

2. A moisture-proof Chinese medicine dispensing cabinet according to claim 1, characterized in that: The inner wall of the insertion hole (15) on the front positioning plate (13) and the edge of the insertion block (14) are both provided with raised racks (17) to prevent the adjacent medicine grids (1) from being misaligned front to back.

3. A moisture-proof Chinese medicine dispensing cabinet according to claim 1, characterized in that: The distance between any two opposite sides of the positioning plate (13) is greater than the diameter of the medicine grid (1), so that a gap (22) for the wire to pass through exists between adjacent medicine grids (1).

4. A moisture-proof Chinese medicine dispensing cabinet according to claim 1, characterized in that: The main frame (12) is formed by connecting a plurality of square steel pipes (18) and an aluminum profile (19), and the strip-shaped slot (16) is arranged on the aluminum profile (19).

5. A moisture-proof Chinese medicine dispensing cabinet according to claim 1, characterized in that: A bottle inserting check valve (6) and a bottle removing check valve (7) are fixedly installed at the rear end of the medicine grid; When the pressure difference between the storage cavity (23) and the outside is greater than the opening critical value of the bottle insertion one-way valve (6), the bottle insertion one-way valve (6) is in an open state to discharge the gas in the storage cavity (23) to the outside; When the pressure difference between the outside and the storage cavity (23) is greater than the opening critical value of the bottle removal one-way valve (7), the bottle removal one-way valve (7) is in an open state to input gas into the storage cavity (23).

6. A moisture-proof Chinese medicine dispensing cabinet according to claim 5, characterized in that: The inner wall of the medicine grid (1) is recessed outward to form an annular clamping groove (8), and the clamping groove (8) is used to place the sealing ring (2).

7. A moisture-proof Chinese medicine dispensing cabinet according to claim 6, characterized in that: At least two layers of sealing rings (9) are arranged on the inner ring wall of the sealing ring (2), and the plurality of sealing rings (9) can all be in close contact with the outer wall of the bottle body or the dispensing bottle cap (3) to improve the sealing effect.

8. A moisture-proof Chinese medicine dispensing cabinet according to claim 7, characterized in that: The end of the slot (8) is extended rearwards to be provided with a threaded portion (10), and the threaded portion (10) is provided with an internal thread; The threaded portion (10) is connected to a tail cover (11), and the bottle insertion check valve (6) and the bottle removal check valve (7) are both arranged on the tail cover (11); The front end of the tail cover (11) can contact the sealing ring (2).

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