Vacuumizing and nitrogen charging structure for small container

Abstract

The utility model relates to the technical field of nitrogen charging, and provides a vacuumizing nitrogen charging structure for a small container, which is matched with the small container for use and comprises a nitrogen cylinder, a tee joint A, a tee joint B, a stop valve and a vacuum pump, a valve is installed at a gas outlet of the nitrogen cylinder, a first connector of the tee joint A is communicated with the gas outlet of the nitrogen cylinder, a pressure gauge A is installed at a second connector of the tee joint A, a third connector of the tee joint A is communicated with a gas inlet of the small container, a first connector of the tee joint B is communicated with a gas outlet of the small container, and a second connector of the tee joint B is communicated with a gas outlet of the small container. A pressure gauge B is installed at a second connector of the tee joint B. A third connector of the tee joint B is communicated with an air inlet of the stop valve, and an air outlet of the stop valve is communicated with a negative pressure opening of the vacuum pump.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen filling, in particular to a vacuum nitrogen filling structure for a small container. Background Art

[0002] At present, in the industrial field, containers are often evacuated and filled with nitrogen to prevent the internal materials of the containers from being oxidized and contaminated.

[0003] However, for small containers, due to their small size, the external joints cannot be processed with grooves after nitrogen filling. Therefore, the vacuum nitrogen filling tooling previously used for large containers is not applicable, and the vacuum nitrogen filling process is very unstable. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a vacuum pumping and nitrogen filling structure for small containers, and the vacuum pumping and nitrogen filling process is more stable.

[0005] In order to achieve the above object, the utility model is implemented through the following technical solutions: a vacuum nitrogen filling structure for a small container, used in conjunction with a small container, comprising a nitrogen bottle, a tee A, a tee B, a stop valve and a vacuum pump;

[0006] A valve is installed at the gas outlet of the nitrogen bottle, the first interface of the tee A is communicated with the gas outlet of the nitrogen bottle, the second interface of the tee A is installed with a pressure gauge A, the third interface of the tee A is communicated with the gas inlet of the small container, the first interface of the tee B is communicated with the gas outlet of the small container, the second interface of the tee B is installed with a pressure gauge B, the third interface of the tee B is communicated with the gas inlet of the stop valve, and the gas outlet of the stop valve is communicated with the negative pressure port of the vacuum pump.

[0007] Furthermore, the third interface of the tee A is communicated with the air inlet of the small container through a first rubber tube, and the first interface of the tee B is communicated with the air outlet of the small container through a second rubber tube.

[0008] Furthermore, it also includes an auxiliary tank, the air inlet of the auxiliary tank is connected to the air outlet of the stop valve, and the air outlet of the auxiliary tank is connected to the negative pressure port of the vacuum pump.

[0009] Furthermore, there are multiple small containers, and two adjacent small containers are connected via a third rubber tube;

[0010] The air inlet of the frontmost small container is connected to the third interface of the tee A through the first rubber tube, and the air outlet of the rearmost small container is connected to the first interface of the tee B through the second rubber tube.

[0011] Furthermore, the ends of the first rubber tube, the second rubber tube and the third rubber tube are all sleeved with annular clamps.

[0012] Beneficial effects of the utility model: the utility model provides a vacuuming and nitrogen-filling structure for small containers. When in use, the valve at the gas outlet of the nitrogen bottle is first closed, the stop valve is opened, and then the vacuum pump is turned on to evacuate. After the indexes on the pressure gauge A and the pressure gauge B reach the design requirements, the stop valve is closed, and then the valve at the gas outlet of the nitrogen bottle is opened to fill nitrogen. After the indexes on the pressure gauge A and the pressure gauge B reach the design requirements, the valve at the gas outlet of the nitrogen bottle is closed. Therefore, the vacuuming process and the nitrogen-filling process of the utility model are carried out separately before and after, and the pressure gauge A and the pressure gauge B can display the pressure value in real time, so the vacuuming and nitrogen-filling process is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure numerals: 10 - nitrogen cylinder, 20 - tee A, 21 - pressure gauge A, 30 - tee B, 31 - pressure gauge B, 40 - stop valve, 50 - vacuum pump, 61 - first rubber tube, 62 - second rubber tube, 70 - auxiliary tank, 80 - small container. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0016] In this application, unless otherwise clearly specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0017] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "horizontal", "top", "bottom", "up", "down", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 invention.

[0018] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0019] like Figure 1 As shown, the utility model provides a vacuuming and nitrogen filling structure for a small container, which is used in conjunction with the small container and includes a nitrogen bottle, a tee A, a tee B, a stop valve and a vacuum pump.

[0020] A valve is installed at the gas outlet of the nitrogen bottle. The first interface of the tee A is connected to the gas outlet of the nitrogen bottle, the second interface of the tee A is installed with a pressure gauge A, and the third interface of the tee A is connected to the gas inlet of the small container.

[0021] The first interface of the tee B is connected to the air outlet of the small container, the second interface of the tee B is equipped with a pressure gauge B, the third interface of the tee B is connected to the air inlet of the stop valve, and the air outlet of the stop valve is connected to the negative pressure port of the vacuum pump.

[0022] The specific use process of the utility model is as follows: first, the staff closes the valve at the gas outlet of the nitrogen bottle and opens the stop valve. Then, the vacuum pump is turned on to evacuate the small container, and the stop valve is closed after the indexes on the pressure gauge A and the pressure gauge B reach the design requirements. Then, the valve at the gas outlet of the nitrogen bottle is opened to fill the nitrogen, and the valve at the gas outlet of the nitrogen bottle is closed after the indexes on the pressure gauge A and the pressure gauge B reach the design requirements. At this time, under the action of negative pressure, the nitrogen in the nitrogen bottle will automatically fill the small container.

[0023] Therefore, the vacuuming process and the nitrogen filling process of the utility model are carried out separately before and after, and the pressure gauge A and the pressure gauge B can display the pressure value in real time, so the vacuuming and nitrogen filling process is more stable.

[0024] In one embodiment, the third interface of the tee A is connected to the air inlet of the small container through a first rubber tube, and the first interface of the tee B is connected to the air outlet of the small container through a second rubber tube.

[0025] When the nitrogen in the nitrogen bottle fills the small container, the staff will bend the first rubber tube and the second rubber tube at both ends of the small container, clamp them with a long tail clip at the bend and tie them with a self-locking nylon belt to prevent leakage, and finally cut off the excess parts of the first rubber tube and the second rubber tube, so that the small container can be taken out.

[0026] Since the first rubber tube and the second rubber tube at both ends of the small container taken out at this time are clamped by the long tail clips and tied with the self-locking nylon rolling belt, there will be no air leakage and the sealing performance is good.

[0027] In one embodiment, an auxiliary tank is further included, wherein the air inlet of the auxiliary tank is communicated with the air outlet of the stop valve, and the air outlet of the auxiliary tank is communicated with the negative pressure port of the vacuum pump.

[0028] Since small containers are small in size, they are prone to over-vacuuming during vacuuming, so an auxiliary tank is used to increase the vacuum volume so that the internal pressure of the small container can more stably meet the design requirements.

[0029] In one embodiment, there are multiple small containers, and two adjacent small containers are connected via a third rubber tube.

[0030] The air inlet of the frontmost small container is connected to the third interface of the tee A through a first rubber tube, and the air outlet of the rearmost small container is connected to the first interface of the tee B through a second rubber tube.

[0031] In this way, the utility model can simultaneously vacuum and nitrogen-fill a plurality of small containers at one time, thus saving production cycles, requiring tools with simple structures, convenient operations, and low manufacturing costs.

[0032] The steps for removing the small container are the same as the above steps. The staff bends the rubber tubes at both ends of the small container, clamps them with long tail clips at the bends and binds them with self-locking nylon rolled belts to prevent air leakage. Finally, the excess part of the rubber tube is cut off. I will not go into details here.

[0033] In one embodiment, the ends of the first rubber tube, the second rubber tube and the third rubber tube are all sleeved with an annular clamp, which fastens the ends of the first rubber tube, the second rubber tube and the third rubber tube to corresponding parts to improve sealing performance.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A vacuum nitrogen filling structure for small containers, used in conjunction with small containers, characterized by: Including nitrogen cylinder, tee A, tee B, stop valve and vacuum pump; A valve is installed at the gas outlet of the nitrogen bottle, the first interface of the tee A is communicated with the gas outlet of the nitrogen bottle, the second interface of the tee A is installed with a pressure gauge A, the third interface of the tee A is communicated with the gas inlet of the small container, the first interface of the tee B is communicated with the gas outlet of the small container, the second interface of the tee B is installed with a pressure gauge B, the third interface of the tee B is communicated with the gas inlet of the stop valve, and the gas outlet of the stop valve is communicated with the negative pressure port of the vacuum pump.

2. A vacuum nitrogen filling structure for small containers according to claim 1, characterized in that: The third interface of the tee A is communicated with the air inlet of the small container through a first rubber tube, and the first interface of the tee B is communicated with the air outlet of the small container through a second rubber tube.

3. A vacuum nitrogen filling structure for small containers according to claim 2, characterized in that: It also includes an auxiliary tank, the air inlet of the auxiliary tank is communicated with the air outlet of the stop valve, and the air outlet of the auxiliary tank is communicated with the negative pressure port of the vacuum pump.

4. A vacuum nitrogen filling structure for small containers according to claim 3, characterized in that: There are multiple small containers, and two adjacent small containers are connected via a third rubber tube; The air inlet of the frontmost small container is connected to the third interface of the tee A through the first rubber tube, and the air outlet of the rearmost small container is connected to the first interface of the tee B through the second rubber tube.

5. A vacuum pumping and nitrogen filling structure for small containers according to claim 4, characterized in that: Ends of the first rubber tube, the second rubber tube and the third rubber tube are all sleeved with annular clamps.

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