Inflation and deflation device for pressure gauge

Abstract

The utility model discloses an inflating and deflating device for a pressure gauge, which comprises a connector and a valve core, and the connector is respectively communicated with the pressure gauge and a tank body through pipelines. According to the utility model, the metal connecting joint with the valve core is additionally arranged between the pressure gauge and the tank body, so that the pressure value in the tank body can be observed in real time, and the tank body can be inflated and deflated in real time according to use requirements; the connecting joint is provided with a plurality of groups of circulation cavities in a gradient manner, and the connecting parts of the connecting joint and the pressure gauge and the valve core are sealed through epoxy resin, so that the sealing performance and the inflation and deflation stability are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge technology, specifically to a pressure gauge inflation / deflation device. Background Technology

[0002] Gas pressure measuring instruments are core devices for monitoring gas pressure inside sealed containers in industrial and civil fields. Their core function is to indirectly reflect the gas content inside the container through pressure data, thereby guiding the filling or venting operation. They are widely used in chemical production, medical oxygen supply, welding gas storage, metallurgical processes and other scenarios.

[0003] When there is too much gas in the tank, it is necessary to release the gas to ensure container safety and meet gas usage requirements; when there is too little gas, it is necessary to refill the tank. Traditional pressure gauges can only provide a pressure value at a certain moment and cannot monitor the gas pressure in the tank continuously in real time. Operators cannot keep track of the dynamic changes in gas pressure in a timely manner, making it difficult to take effective countermeasures in the first instance of abnormal gas pressure. This may lead to reduced production efficiency, equipment damage, or even safety accidents. Utility Model Content

[0004] The purpose of this utility model is to provide a pressure gauge inflation / deflation device to solve the above problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution, including:

[0006] A connecting joint, which is connected to a pressure gauge and a tank via pipelines;

[0007] A valve core is provided on one side of the connection joint, and the valve core is used to charge and depress the tank.

[0008] As a further description of the above technical solution, the connection between the pressure gauge and the connecting joint is sealed by an organic layer, and the connection between the connecting joint and the valve core is sealed by an organic layer.

[0009] As a further description of the above technical solution, the connecting joint is made of metal, and the connecting joint has a flow cavity and a flow hole.

[0010] As a further description of the above technical solution, the flow cavity includes a first flow cavity, a second flow cavity, and a third flow cavity arranged in a gradient, wherein the inner diameters of the first flow cavity, the second flow cavity, and the third flow cavity gradually increase.

[0011] As a further description of the above technical solution, a first flow hole is provided at one end of the connecting joint, a second flow hole is provided on the side of the connecting joint, and a third flow hole is provided at the other end of the connecting joint.

[0012] As a further description of the above technical solution, the first flow cavity and the connecting joint are connected through the first flow hole.

[0013] As a further description of the above technical solution, the second flow cavity is connected to the pressure gauge through the second flow hole.

[0014] As a further description of the above technical solution, the third flow cavity is connected to the tank body through a third flow hole.

[0015] As a further description of the above technical solution, a valve core shaft is provided inside the valve core.

[0016] As a further description of the above technical solution, a coarse material cap is provided at the end of the valve core.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This utility model adds a metal connection joint with a valve core between the pressure gauge and the tank, which can monitor the pressure value inside the tank in real time and perform inflation and deflation operations on the tank in real time according to the usage requirements.

[0019] 2. In this utility model, the connecting joint is provided with multiple sets of flow chambers in a gradient manner, and the connection part between the connecting joint and the pressure gauge and valve core is sealed with epoxy resin, which effectively improves the sealing performance and the stability of inflation and deflation.

[0020] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the pressure gauge charging and discharging device of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of the pressure gauge charging and discharging device of this utility model. Figure 2 .

[0023] Figure label:

[0024] 1. Connecting joint; 11. Flow chamber; 111. First flow chamber; 112. Second flow chamber; 113. Third flow chamber; 12. Flow hole; 121. First flow hole; 122. Second flow hole; 123. Third flow hole; 2. Valve core; 21. Valve core shaft; 22. Coarse material cap; 3. Pressure gauge; 4. Tank body; 5. Organic layer. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0026] like Figures 1-2 As shown, in one embodiment, a pressure gauge charging / discharging device includes a connecting joint 1 and a valve core 2. The connecting joint 1 is connected to a pressure gauge 3 and a tank 4 via pipelines; while the valve core 2 is disposed on one side of the connecting joint 1 and is used for charging / discharging the tank 4.

[0027] It should be explained in detail that the connection between pressure gauge 3 and connector 1 is sealed by organic layer 5, and the connection between connector 1 and valve core 2 is also sealed by organic layer 5. Specifically, organic layer 5 is made of sealing materials such as epoxy resin, which has excellent chemical stability and physical and mechanical properties. After being coated or injected into the connection area, it will be tightly bonded to the material surface through intermolecular forces. After complete curing, it can not only resist the penetration of gaseous media, but also adapt to complex working conditions such as temperature changes and mechanical vibrations, thereby extending the service life of the sealing structure and ensuring that connector 1 and pressure gauge 3 and valve core 2 maintain excellent sealing performance during long-term use.

[0028] Understandably, the sealing effect of the organic layer 5 effectively improves the sealing performance between the connecting joint 1 and the pressure gauge 3 and valve core 2.

[0029] Please continue reading. Figures 1-2 In this embodiment, the connector 1 is made of metal, and the connector 1 has multiple sets of flow cavities 11 and flow holes 12.

[0030] Furthermore, the flow cavity 11 includes a first flow cavity 111, a second flow cavity 112, and a third flow cavity 113 arranged in a gradient, and the inner diameters of the first flow cavity 111, the second flow cavity 112, and the third flow cavity 113 gradually increase; correspondingly, a first flow hole 121 is opened at one end of the connecting joint 1, a second flow hole 122 is opened on the side of the connecting joint 1, and a third flow hole 123 is opened at the other end of the connecting joint 1.

[0031] Specifically, the first flow chamber 111 is connected to the connecting joint 1 through the first flow hole 121, the second flow chamber 112 is connected to the pressure gauge 3 through the second flow hole 122, and the third flow chamber 113 is connected to the tank body 4 through the third flow hole 123.

[0032] Understandably, when gas enters the third flow cavity 113 from tank 4 through the third flow orifice 123, the larger inner diameter provides a buffer space for the gas, effectively reducing the flow velocity of the high-pressure gas and preventing turbulence and pressure fluctuations caused by excessive flow velocity. As the gas flows into the second flow cavity 112, the gradually narrowing inner diameter creates a pressure gradient during the flow, gradually adjusting the gas flow state from an initial disordered state to a stable laminar flow. When the gas finally enters the first flow cavity 111 through the first flow orifice 121, the smaller inner diameter further constrains the gas flow, allowing it to enter the pressure gauge 3 in a stable and controllable state, ensuring the accuracy of the pressure monitoring data. During the filling and discharging process, this gradient structure of the flow cavity 11 and the flow orifice design of the connecting joint 1 create a synergistic effect: during discharging, the gas pressure is gradually released, and the change in the inner diameter of each flow cavity can effectively absorb the impact caused by sudden pressure changes, preventing pipeline vibration or instrument damage caused by sudden pressure drops; during filling, the stable gas flow velocity ensures that the pressure inside tank 4 rises uniformly, avoiding safety hazards caused by excessive local pressure, thus effectively improving the stability of filling and discharging.

[0033] Furthermore, the valve core 2 is equipped with a valve core shaft 21 inside, which can flexibly adjust the on / off state and flow rate of gas. Correspondingly, the valve core 2 is equipped with a coarse material cap 22 at its end, which can not only effectively protect the internal precision structure such as the valve core shaft, preventing dust, impurities and other foreign objects from entering and affecting the normal operation of the valve core 2, but also enhance the connection stability between the valve core 2 and the metal connection joint 1 to a certain extent, preventing loosening and leakage caused by external impact or vibration.

[0034] Understandably, by adding a metal connector 1 with a valve core 2 between the pressure gauge 3 and the tank 4, when the tank 4 needs to be inflated, the operator can use a specific tool to rotate or press the valve core 2 shaft to open the internal channel of the valve core 2, allowing gas to flow smoothly into the tank 4; when deflation, the gas discharge volume can be precisely controlled by controlling the position of the valve core 2 shaft; this allows for real-time monitoring of the pressure value inside the tank 4, and also enables real-time inflation and deflation operations on the tank 4 according to usage requirements.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily 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 invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressure gauge charging and discharging device, characterized in that, include: Connecting joint (1), which is connected to pressure gauge (3) and tank (4) respectively through pipelines; A valve core (2) is provided on one side of the connecting joint (1), and the valve core (2) is used to charge and depress the tank (4).

2. The pressure gauge charging and discharging device according to claim 1, characterized in that, The connection between the pressure gauge (3) and the connecting joint (1) is sealed by an organic layer (5), and the connection between the connecting joint (1) and the valve core (2) is sealed by an organic layer (5).

3. The pressure gauge charging and discharging device according to claim 2, characterized in that, The connecting joint (1) is made of metal, and the connecting joint (1) has a flow cavity (11) and a flow hole (12).

4. The pressure gauge charging and discharging device according to claim 3, characterized in that, The flow cavity (11) includes a first flow cavity (111), a second flow cavity (112), and a third flow cavity (113) arranged in a gradient, with the inner diameters of the first flow cavity (111), the second flow cavity (112), and the third flow cavity (113) gradually increasing.

5. The pressure gauge charging and discharging device according to claim 2, characterized in that, One end of the connector (1) is provided with a first flow hole (121), the side of the connector (1) is provided with a second flow hole (122), and the other end of the connector (1) is provided with a third flow hole (123).

6. The pressure gauge charging and discharging device according to claim 4, characterized in that, The first flow cavity (111) is connected to the connecting joint (1) through the first flow hole (121).

7. The pressure gauge charging and discharging device according to claim 4, characterized in that, The second flow cavity (112) is connected to the pressure gauge (3) through the second flow hole (122).

8. The pressure gauge charging and discharging device according to claim 4, characterized in that, The third flow cavity (113) is connected to the tank body (4) through the third flow hole (123).

9. The pressure gauge charging and discharging device according to claim 1, characterized in that, The valve core (2) is provided with a valve core shaft (21) inside.

10. The pressure gauge charging and discharging device according to claim 1, characterized in that, The valve core (2) is provided with a coarse material cap (22) at its end.

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