Vacuum-pumping nitrogen-charging tamponade device and production line

Abstract

The invention provides a vacuumizing, nitrogen charging and plug pressing device and a production line, and relates to the technical field of medical equipment.The vacuumizing, nitrogen charging and plug pressing device comprises a plug pressing air cylinder, a plug pressing shaft, a plug sucking base, a bottle cover, a valve body connecting base, a valve body and a pneumatic diaphragm valve set arranged on the valve body; according to the vacuumizing, nitrogen charging and plug pressing device, the design of an existing cam type distribution sliding ring is changed, and by means of the design that a multi-channel air channel and a pneumatic diaphragm valve set on the valve body are matched with the plug pressing air cylinder and the plug pressing shaft, the requirement for controlling the residual oxygen amount with the higher requirement in an infusion bottle is met, stability is kept, and the defective rate is reduced; the multi-channel gas path of the valve body and the pneumatic diaphragm valve group are designed in a combined manner, and the plug pressing nitrogen charging control mode is simplified while the two are modularly integrated; the whole device is convenient to maintain, meanwhile, the sanitation level is higher, the GMP requirement is met, and the in-place cleaning and in-place disinfection (CIP / SIP) requirement is met.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a vacuum pumping, nitrogen filling and plugging device and a production line. Background Art

[0002] As a traditional form of infusion packaging, glass bottle infusion has many disadvantages. For example, an air circuit must be formed during clinical infusion so that the liquid medicine can drip out, which causes a high probability of secondary pollution. Glass bottles are large in size, take up space, and have high transportation costs. In addition, bottle collisions during production and transportation can easily cause invisible lacerations, causing drug contamination and safety hazards. However, glass bottles also have many advantages. For example, glass bottles have the best stability among all infusion packaging forms. They have good barrier properties such as water, oxygen, and light insulation, as well as antioxidant properties. They also have very stable compatibility with liquid medicines. Therefore, many liquid medicines on the market, especially nutritional liquid medicines and therapeutic infusions (such as amino acids, fat emulsions, etc.), are packaged in glass bottles. These nutritional and therapeutic liquid medicines have strict requirements on the oxygen content in the bottle. The residual oxygen content will have a significant difference in the shelf life of the liquid medicine. Therefore, controlling the residual oxygen content in each infusion bottle is a key performance requirement and technical indicator of the equipment. After filling, the infusion bottle needs to enter the vacuum pumping, nitrogen filling and plugging station. During the vacuum pumping, nitrogen filling and plugging process, the prior art CN105151381A discloses a vacuum pumping, nitrogen filling and plugging device and production line. The plug suction seat sucks up the bottle plug through the plug suction shaft under the action of the lifting cam, and the cup sleeve descends through the outer shaft under the action of the lifting cam, so that the sealing cup cover is completely sealed and buckled on the bottle body and sealed with the shoulder of the bottle body, thereby forming a closed space between the cup sleeve and the bottle body. Then, the closed space is repeatedly vacuumed and nitrogen-filled through the nitrogen interface and the vacuum interface of vacuum pumping and nitrogen filling until the residual oxygen content meets the requirements. Finally, the outer shaft remains stationary, and the plug suction shaft descends under the action of the lifting cam to press the bottle rubber plug into the bottle mouth to complete the nitrogen filling and plugging work. During this working process, the plug removal vacuum is controlled by a mechanical distribution slip ring to control the presence or absence of vacuum. The main problems of the existing vacuum nitrogen filling plugging device are: there is a lot of mechanical sliding friction, a lot of mechanical cam friction, it is easy for debris to fall off and contaminate the medicine, and it is also easy to wear and affect the sealing and residual oxygen stability; the valve diameter is too small, the valve core is easy to be blocked, and the hygiene level is not ideal; there are many leakage points, resulting in insufficient oxygen replacement, and the residual oxygen content is difficult to control within 0.5% to meet higher residual oxygen control requirements.

[0003] Therefore, how to design a new type of vacuum nitrogen filling plugging device and production line has become the focus of research for industry insiders. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the present application provides a vacuum nitrogen filling plugging device, which changes the design of the existing cam type distribution slip ring, and uses the multi-channel air circuit on the valve body, the pneumatic diaphragm valve group and the plugging cylinder and the plugging shaft to cooperate with each other to meet the higher requirements for controlling the residual oxygen content in the infusion bottle and maintain stability, thereby reducing the defective rate; the multi-channel air circuit of the valve body and the pneumatic diaphragm valve group are combined in the design, and the two are modularly integrated, while simplifying the plugging nitrogen filling control method.

[0005] The technical solutions provided by this application are as follows: A vacuum nitrogen filling plugging device, comprising: a plugging cylinder, a plugging shaft, a plug suction seat, a bottle cover, a valve body connecting seat, a valve body and a pneumatic diaphragm valve group arranged on the valve body; The pneumatic diaphragm valve group includes a vacuum pneumatic diaphragm valve unit and a nitrogen pneumatic diaphragm valve unit; the vacuum pneumatic diaphragm valve unit and the nitrogen pneumatic diaphragm valve unit are both installed on the valve body, the valve body is provided with a vacuum main inlet and a nitrogen main inlet, and the valve body is provided with a vacuum channel and a nitrogen channel; the vacuum channel is connected with the vacuum main inlet and the vacuum pneumatic diaphragm valve unit, and the nitrogen channel is connected with the nitrogen main inlet and the nitrogen pneumatic diaphragm valve unit; the upper end of the valve body connecting seat is connected to the bottom of the valve body, and the lower end of the valve body connecting seat is connected to the bottle cover; The valve body is provided with an intermediate channel hole, the plugging cylinder is fixed to the top of the valve body, the plugging shaft is connected to the output piston of the plugging cylinder, the plugging shaft passes through the intermediate channel hole, and the plugging shaft forms a relatively sealed space between the valve body through the first seal and the second seal; the formed relatively sealed space is communicated with the vacuum main inlet through the vacuum channel, and is communicated with the nitrogen main inlet through the nitrogen channel; The bottom end of the plug pressing shaft is connected with a plug suction seat, and the plug pressing shaft is provided with a central pipeline channel at the relatively sealed space formed, and the central pipeline channel directly leads to the plug suction seat for plug suction and plug release.

[0006] Further, the vacuum pneumatic diaphragm valve unit includes a vacuum pneumatic diaphragm valve a and a vacuum pneumatic diaphragm valve b; the nitrogen pneumatic diaphragm valve unit includes a nitrogen pneumatic diaphragm valve a and a nitrogen pneumatic diaphragm valve b; The vacuum channel includes a vacuum air path 1, a vacuum air path of a vacuum pneumatic diaphragm valve a, and a vacuum air path 1 of a vacuum pneumatic diaphragm valve b, a vacuum air path 2 of a vacuum pneumatic diaphragm valve b, and a vacuum air path 3 of a vacuum pneumatic diaphragm valve b; The nitrogen channel includes a nitrogen gas path 1, a nitrogen gas path of a pneumatic diaphragm valve a, and a nitrogen gas path 1 of a pneumatic diaphragm valve b and a nitrogen gas path 2 of a nitrogen gas path of a pneumatic diaphragm valve b; Among them, the vacuum main inlet connects the vacuum pneumatic diaphragm valves a and b together through the vacuum air path 1, and the nitrogen main inlet connects the nitrogen pneumatic diaphragm valves a and b together through the nitrogen air path 1; the vacuum pneumatic diaphragm valve a is communicated with the relatively sealed space formed by the central pressing plug shaft in the valve body through the vacuum air path of the vacuum pneumatic diaphragm valve a; the nitrogen pneumatic diaphragm valve a is communicated with the relatively sealed space formed by the central pressing plug shaft in the valve body through the nitrogen air path of the nitrogen pneumatic diaphragm valve a; The vacuum pneumatic diaphragm valve b is connected to the enclosed space between the bottle cover at the lower end of the valve body and the glass infusion bottle through the vacuum air path 1, vacuum air path 2 and vacuum air path 3 of the vacuum pneumatic diaphragm valve b; the nitrogen pneumatic diaphragm valve b is connected to the enclosed space between the bottle cover at the lower end of the valve body and the glass infusion bottle through the nitrogen air path 1 and nitrogen air path 2 of the nitrogen pneumatic diaphragm valve b.

[0007] Furthermore, a pressure sensor for monitoring vacuum and nitrogen pressure is also provided on the valve body; the pressure sensor is connected to the vacuum air path 2 of the vacuum pneumatic diaphragm valve b for monitoring the vacuum pressure.

[0008] Furthermore, the pressure sensor is communicated with the closed space between the bottle cover and the glass infusion bottle through the vacuum air path 3 of the vacuum pneumatic diaphragm valve b, and is used for monitoring the nitrogen pressure.

[0009] Furthermore, a guide sleeve matched with the plug shaft and a third seal of the plug shaft are arranged in the valve body connecting seat, and the suction plug seat is fixedly connected to the plug shaft via a sealing ring.

[0010] Furthermore, a sealing cup sleeve which matches the bottle shoulder and bottleneck of the infusion bottle is fixedly mounted on the lower end of the bottle cover through a fixing ring.

[0011] Furthermore, a sealing ring is provided at the passage where the valve body connecting seat and the fixed connection portion of the valve body are located.

[0012] Furthermore, the vacuum nitrogen filling and plugging device of the present application also includes a glass infusion bottle lifting mechanism arranged below the bottle cover, which is used to drive the glass infusion bottle to lift up through upward and downward movements so that the bottle shoulder and bottle neck contact the sealing cup sleeve and tighten to form a seal, and drive the glass infusion bottle downward to separate from the bottle cover.

[0013] The present application also provides a vacuum pumping, nitrogen filling and plugging production line, including the vacuum pumping, nitrogen filling and plugging device mentioned above.

[0014] Beneficial Effects The present application provides a vacuum nitrogen filling plugging device, comprising: a plugging cylinder, a plugging shaft, a plug suction seat, a bottle cover, a valve body connecting seat, a valve body and a pneumatic diaphragm valve group arranged on the valve body; the vacuum nitrogen filling plugging device of the present application changes the design of the existing cam type distribution slip ring, and with the help of the multi-channel air circuit on the valve body, the pneumatic diaphragm valve group and the plugging cylinder and the plugging shaft, it is conducive to meeting the higher requirements for controlling the residual oxygen content in the infusion bottle and maintaining stability, thereby reducing the defective rate; the multi-channel air circuit of the valve body and the pneumatic diaphragm valve group are combined in design, and the two are modularly integrated, while simplifying the plugging nitrogen filling control method. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A structural schematic diagram (three-dimensional) of a vacuum nitrogen filling plugging device is provided for this application; Figure 2 for Figure 1 A top view of a vacuuming, nitrogen filling and plugging device; Figure 3 for Figure 2 Sectional view at EE; Figure 4 for Figure 1 A front view of a vacuuming, nitrogen filling and plugging device; Figure 5 for Figure 4 Sectional view at AA in the middle; Figure 6 for Figure 1 Schematic diagram of the structure of the middle valve body (3D); Figure 7 for Figure 1 Schematic diagram of the gas path structure design of the middle valve body (3D); DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0019] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0021] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0022] The embodiments of the present application are written in a progressive manner.

[0023] The present application provides a vacuum nitrogen filling plugging device, comprising: a plugging cylinder, a plugging shaft, a plug suction seat, a bottle cover, a valve body connecting seat, a valve body, and a pneumatic diaphragm valve group arranged on the valve body; The pneumatic diaphragm valve group includes a vacuum pneumatic diaphragm valve unit and a nitrogen pneumatic diaphragm valve unit; the vacuum pneumatic diaphragm valve unit and the nitrogen pneumatic diaphragm valve unit are both installed on the valve body, the valve body is provided with a vacuum main inlet and a nitrogen main inlet, and the valve body is provided with a vacuum channel and a nitrogen channel; the vacuum channel is connected with the vacuum main inlet and the vacuum pneumatic diaphragm valve unit, and the nitrogen channel is connected with the nitrogen main inlet and the nitrogen pneumatic diaphragm valve unit; the upper end of the valve body connecting seat is connected to the bottom of the valve body, and the lower end of the valve body connecting seat is connected to the bottle cover; The valve body is provided with an intermediate channel hole, the plugging cylinder is fixed to the top of the valve body, the plugging shaft is connected to the output piston of the plugging cylinder, the plugging shaft passes through the intermediate channel hole, and the plugging shaft forms a relatively sealed space between the valve body through the first seal and the second seal; the formed relatively sealed space is communicated with the vacuum main inlet through the vacuum channel, and is communicated with the nitrogen main inlet through the nitrogen channel; The bottom end of the plug pressing shaft is connected with a plug suction seat, and the plug pressing shaft is provided with a central pipeline channel at the relatively sealed space formed, and the central pipeline channel directly leads to the plug suction seat for plug suction and plug release.

[0024] The vacuum nitrogen filling plugging device of the present application changes the design of the existing cam type distribution slip ring. With the help of the multi-channel air circuit on the valve body, the pneumatic diaphragm valve group and the plugging cylinder and the plugging shaft, it is conducive to meeting the higher requirements for controlling the residual oxygen content in the infusion bottle and maintaining stability, thereby reducing the defective rate. The multi-channel air circuit of the valve body and the pneumatic diaphragm valve group are combined in design. The two are modularly integrated and the plugging nitrogen filling control method is simplified.

[0025] See also Figure 1-7 The valve body of the present application is mainly provided with a vacuum main inlet, a nitrogen main inlet, vacuum pneumatic diaphragm valves a and b, and nitrogen pneumatic diaphragm valves a and b; wherein the vacuum main inlet connects the vacuum pneumatic diaphragm valves a and b together through a vacuum air path 1, and similarly the nitrogen main inlet connects the nitrogen pneumatic diaphragm valves a and b together through a nitrogen air path 1. Similarly, the vacuum pneumatic diaphragm valve a is connected to the relatively sealed space formed by the central plugging shaft of the valve body through the vacuum air path of the vacuum pneumatic diaphragm valve a, so as to facilitate the vacuum plug suction in the subsequent operation process; the nitrogen pneumatic diaphragm valve a is connected to the relatively sealed space formed by the central plugging shaft of the valve body through the nitrogen air path of the nitrogen pneumatic diaphragm valve a, so as to prevent the plug from being sucked out of the glass bottle again after the vacuum is destroyed in the subsequent operation process. Similarly, the vacuum pneumatic diaphragm valve b is communicated with the enclosed space between the bottle cover at the lower end of the valve body and the glass infusion bottle through the vacuum air path 1, vacuum air path 2 and vacuum air path 3 of the vacuum pneumatic diaphragm valve b, so that the enclosed space between the bottle cover and the glass infusion bottle can be evacuated outward during subsequent operation; the nitrogen pneumatic diaphragm valve b is communicated with the enclosed space between the bottle cover at the lower end of the valve body and the glass infusion bottle through the nitrogen air path 1 and nitrogen air path 2 of the nitrogen pneumatic diaphragm valve b, so that the enclosed space between the bottle cover and the glass infusion bottle can be supplemented with nitrogen during subsequent operation; further, in order to monitor the vacuum and nitrogen pressures in real time, a pressure sensor connection port is provided below the vacuum and nitrogen pneumatic diaphragm valve of the valve body, to which a corresponding sanitary-grade pressure sensor can be externally connected, and the provided pressure sensor is connected to the vacuum through the vacuum air path 2 of the vacuum pneumatic diaphragm valve b for monitoring the vacuum pressure. The vacuum air path 3 through the vacuum pneumatic diaphragm valve b is connected to the closed space between the bottle cover and the glass infusion bottle for monitoring the nitrogen pressure.

[0026] The unique multi-channel air circuit and pneumatic diaphragm valve group design of the valve body of the present application can not only meet the control needs of multiple channels and multiple media, but also simplify the original structure through its intensive design, save installation space, simplify the pipeline connection and the wiring layout of the control line, facilitate maintenance, and have a higher hygiene level and are more in line with GMP requirements, meeting the requirements of cleaning in place and sterilization in place (CIP / SIP).

[0027] The plugging cylinder is fixed by matching with the top of the multi-channel pneumatic diaphragm valve control valve body (valve body), the plugging shaft is connected to the output piston of the plugging cylinder, passes through the middle channel of the multi-channel pneumatic diaphragm valve control valve body, and the plugging shaft forms a relatively sealed space with the multi-channel pneumatic diaphragm valve control valve body through the first and second seals of the plugging shaft. The formed relatively sealed space is connected to the vacuum main inlet and the nitrogen main inlet through the vacuum air path of the vacuum pneumatic diaphragm valve a and the nitrogen air path of the nitrogen pneumatic diaphragm valve a. Furthermore, the plugging shaft is provided with a central pipeline channel at the formed relative sealed space, and the central pipeline channel is directly connected to the suction plug seat for suction and release of the plug; preferably, the suction plug seat is directly fixedly connected to the plugging shaft through a sealing ring.

[0028] The upper end of the valve body connection seat is fixedly connected to the multi-channel pneumatic diaphragm valve control valve body, and the lower end of the valve body connection seat is fixedly connected to the bottle cover through a clamp. In order to ensure the coaxiality of the plugging shaft during operation, a guide sleeve adapted to the plugging shaft and a third seal of the plugging shaft are arranged in the valve body connection seat. It can be understood that the first, second and third seals can be set by those skilled in the art with reference to the prior art.

[0029] A sealing cup sleeve with good sealing performance that matches the shoulder and bottleneck of the glass infusion bottle is fixedly installed under the bottle cover through a fixing ring. The sealing cup sleeve is made of relatively soft and elastic silicone or rubber material, and the shape and curvature of the cup sleeve are adapted to the model, specification and size of the glass infusion bottle.

[0030] In order to ensure the sealing of the through channel with the pressure sensor, during the process of fixed connection between the valve body connecting seat and the multi-channel pneumatic diaphragm valve control valve body, a sealing ring 12 is arranged at the channel to prevent air leakage.

[0031] A working process of a vacuum nitrogen filling and plugging device: the filled glass infusion bottle is transported to the bottom of the vacuum nitrogen filling and plugging device through a conveying mechanism, the plug removal and plugging cylinder is extended first, and at the same time, the vacuum pneumatic diaphragm valve a is opened, and after the plug suction seat sucks the butyl rubber plug through vacuum, the plug removal and plugging cylinder is retracted, and the vacuum pneumatic diaphragm valve a is kept open; then the glass infusion bottle lifting mechanism (at this time, it is in the lower position) lifts the infusion bottle to be vacuum nitrogen filled and plugged, so that the shoulder and bottleneck of the glass bottle contact the sealing cup sleeve in the device and press tightly to form a seal. At this time, there is a certain gap between the sucked butyl rubber plug and the upper end of the bottle mouth of the glass infusion bottle, so that the gas in the infusion bottle to be vacuum nitrogen filled and plugged can be replaced; then the vacuum pneumatic diaphragm valve b opens to extract the air in the bottle, and closes the vacuum pneumatic diaphragm valve b after the set time; then the nitrogen pneumatic diaphragm valve b opens to fill nitrogen into the infusion bottle to be vacuumed, filled with nitrogen and plugged, and closes after the set time; the vacuum pneumatic diaphragm valve b and the nitrogen pneumatic diaphragm valve b alternately act multiple times according to the program settings (for example, set 3-5 times) to ensure the residual oxygen content in the infusion bottle at the end; finally, the plug removal and plugging cylinder extends again to drive the suction plug seat downward, press the butyl rubber plug into the bottle mouth, and complete the sealing of the bottle. At the same time, the vacuum pneumatic diaphragm valve a is closed and the nitrogen pneumatic diaphragm valve a is opened. The purpose is to use positive pressure gas to break the suction plug vacuum and prevent the residual vacuum after the plugging is completed from bringing the butyl rubber plug out of the bottle mouth again. After completing the plugging action, the plug removal and plugging cylinder retracts back to the initial position; at the same time, the infusion bottle lifting mechanism moves downward, driving the bottle to detach from the sealing sleeve and return to the initial bottle entry position. At this point, the entire process of vacuuming, filling with nitrogen and plugging is completed.

[0032] It can be understood that the glass infusion bottle lifting mechanism of the present application is an existing manipulator device or a lifting platform, etc.

[0033] It should be noted that Figure 4 and Figure 5 The structural design of the components in the vacuum nitrogen filling plugging device shown includes: 1. Plug cylinder, 2. Valve body, 3. Pneumatic control head, 4. Pressure sensor, 5. Plug shaft, 6. First seal, 7. Second seal, 8. Guide sleeve, 9. Third seal, 10. Suction plug seat, 11. Valve body connecting seat, 12. Sealing ring, 13. Clamp, 14. Bottle cover, 15. Fixing ring, 16. Sealing cup sleeve, 17. Infusion bottle stopper, 18. Glass infusion bottle, 19. Sealing ring.

[0034] Figure 7The structural design of the valve body shown includes: 1. vacuum main inlet, 2. nitrogen main inlet, 3. vacuum pneumatic diaphragm valve a, 4. vacuum pneumatic diaphragm valve b, 5. nitrogen pneumatic diaphragm valve a, 6. nitrogen pneumatic diaphragm valve b, 7. pressure sensor, 8. vacuum air circuit 1, 9. nitrogen air circuit 1, 10. vacuum pneumatic diaphragm valve a vacuum air circuit, 11. nitrogen pneumatic diaphragm valve a nitrogen air circuit, 12. vacuum pneumatic diaphragm valve b vacuum air circuit 1, 13. nitrogen pneumatic diaphragm valve b nitrogen air circuit 1, 14. vacuum pneumatic diaphragm valve b vacuum air circuit 2, 15. vacuum pneumatic diaphragm valve b vacuum air circuit 3, 16. nitrogen pneumatic diaphragm valve b nitrogen air circuit 2.

[0035] The present application also provides a vacuum nitrogen filling plugging production line, including the vacuum nitrogen filling plugging device. The beneficial effects of the vacuum nitrogen filling plugging production line of the present application correspond to the beneficial effects of the vacuum nitrogen filling plugging device, which will not be repeated.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vacuum nitrogen filling plugging device, It is characterized in that include: A plug pressing cylinder, a plug pressing shaft, a plug suction seat, a bottle cover, a valve body connecting seat, a valve body, and a pneumatic diaphragm valve group arranged on the valve body; The pneumatic diaphragm valve group includes a vacuum pneumatic diaphragm valve unit and a nitrogen pneumatic diaphragm valve unit; the vacuum pneumatic diaphragm valve unit and the nitrogen pneumatic diaphragm valve unit are both installed on the valve body, the valve body is provided with a vacuum main inlet and a nitrogen main inlet, and the valve body is provided with a vacuum channel and a nitrogen channel; the vacuum channel is connected with the vacuum main inlet and the vacuum pneumatic diaphragm valve unit, and the nitrogen channel is connected with the nitrogen main inlet and the nitrogen pneumatic diaphragm valve unit; the upper end of the valve body connecting seat is connected to the bottom of the valve body, and the lower end of the valve body connecting seat is connected to the bottle cover; The valve body is provided with an intermediate channel hole, the plugging cylinder is fixed to the top of the valve body, the plugging shaft is connected to the output piston of the plugging cylinder, the plugging shaft passes through the intermediate channel hole, and the plugging shaft forms a relatively sealed space between the valve body through the first seal and the second seal; the formed relatively sealed space is communicated with the vacuum main inlet through the vacuum channel, and is communicated with the nitrogen main inlet through the nitrogen channel; The bottom end of the plug pressing shaft is connected with a plug suction seat, and the plug pressing shaft is provided with a central pipeline channel at the relatively sealed space formed, and the central pipeline channel directly leads to the plug suction seat for plug suction and plug release.

2. The device according to claim 1, It is characterized in that The vacuum pneumatic diaphragm valve unit includes a vacuum pneumatic diaphragm valve a and a vacuum pneumatic diaphragm valve b; the nitrogen pneumatic diaphragm valve unit includes a nitrogen pneumatic diaphragm valve a and a nitrogen pneumatic diaphragm valve b; The vacuum channel includes a vacuum air path 1, a vacuum air path of a vacuum pneumatic diaphragm valve a, and a vacuum air path 1 of a vacuum pneumatic diaphragm valve b, a vacuum air path 2 of a vacuum pneumatic diaphragm valve b, and a vacuum air path 3 of a vacuum pneumatic diaphragm valve b; The nitrogen channel includes a nitrogen gas path 1, a nitrogen gas path of a pneumatic diaphragm valve a, and a nitrogen gas path 1 of a pneumatic diaphragm valve b and a nitrogen gas path 2 of a nitrogen gas path of a pneumatic diaphragm valve b; Among them, the vacuum main inlet connects the vacuum pneumatic diaphragm valves a and b together through the vacuum air path 1, and the nitrogen main inlet connects the nitrogen pneumatic diaphragm valves a and b together through the nitrogen air path 1; the vacuum pneumatic diaphragm valve a is communicated with the relatively sealed space formed by the central pressing plug shaft in the valve body through the vacuum air path of the vacuum pneumatic diaphragm valve a; the nitrogen pneumatic diaphragm valve a is communicated with the relatively sealed space formed by the central pressing plug shaft in the valve body through the nitrogen air path of the nitrogen pneumatic diaphragm valve a; The vacuum pneumatic diaphragm valve b is connected to the enclosed space between the bottle cover at the lower end of the valve body and the glass infusion bottle through the vacuum air path 1, vacuum air path 2 and vacuum air path 3 of the vacuum pneumatic diaphragm valve b; the nitrogen pneumatic diaphragm valve b is connected to the enclosed space between the bottle cover at the lower end of the valve body and the glass infusion bottle through the nitrogen air path 1 and nitrogen air path 2 of the nitrogen pneumatic diaphragm valve b.

3. The device according to claim 2, It is characterized in that The valve body is also provided with a pressure sensor for monitoring vacuum and nitrogen pressure; the pressure sensor is connected to the vacuum air path 2 of the vacuum pneumatic diaphragm valve b for monitoring the vacuum pressure.

4. The device according to claim 3, It is characterized in that The pressure sensor is connected to the closed space between the bottle cover and the glass infusion bottle through the vacuum air path 3 of the vacuum pneumatic diaphragm valve b, and is used for monitoring the nitrogen pressure.

5. The device according to claim 2, It is characterized in that A guide shaft sleeve matched with the plug-pressing shaft and a third sealing member of the plug-pressing shaft are arranged in the valve body connecting seat, and the suction plug seat is fixedly connected with the plug-pressing shaft through a sealing ring.

6. The device according to claim 2, It is characterized in that A sealing cup sleeve which matches the bottleneck of the infusion bottle shoulder is fixedly installed on the lower end of the bottle cover through a fixing ring.

7. The device according to claim 2, It is characterized in that A sealing ring is arranged at the passage where the valve body connecting seat and the fixed connection part of the valve body are located.

8. The device according to any one of claims 1 to 7, It is characterized in that It also includes a glass infusion bottle lifting mechanism disposed below the bottle cover, which is used to drive the glass infusion bottle to be lifted through upward and downward movements so that the bottle shoulder and the bottleneck contact the sealing cup sleeve and are tightened to form a seal, and to drive the glass infusion bottle downward to separate from the bottle cover.

9. A vacuum nitrogen filling plugging production line, It is characterized in that It comprises the vacuuming, nitrogen filling and plugging device as described in any one of claims 1 to 8.

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