A pressure control instrument for inflating and deflating

Abstract

The utility model discloses a kind of inflation pressure control instrument, comprising: mounting connector, respectively with pressure gauge and detection end communication;Two-way control valve, through mounting connector and pressure gauge communication, for two-way flow gas.The utility model increases two-way control valve in mounting connector one end, after measured gas input, corresponding pressure value is shown by pressure gauge, when display value is high, the required pressure value is obtained by two-way control valve deflation, when display value is low, the required pressure value is obtained by two-way control valve aeration, effectively improve the pressure gauge detection accuracy and operating convenience.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge technology, specifically to a pressure control instrument for charging and discharging gas. 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] In practical applications, when pipelines or pressure equipment need to be pressure checked, if the pressure is too high or the gas volume is too large, it is often impossible to directly and accurately release or add gas. This is because gas pressure changes are complex and dynamic. Different gas media, ambient temperatures, and equipment operating conditions will all affect the pressure. Direct operation may not only lead to inaccurate pressure regulation but may also cause safety hazards, increase the difficulty of operation for users, and even, in some complex operating conditions, prevent users from performing effective pressure regulation operations, seriously affecting the normal operation of production and life. Utility Model Content

[0004] The purpose of this utility model is to provide a pressure control instrument for inflation and deflation in order to solve the above problems.

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

[0006] The mounting connector is connected to the pressure gauge and the detection end respectively, and the mounting connector has a first flow cavity and a first flow hole;

[0007] A two-way control valve is connected to a pressure gauge via a mounting connector. The two-way control valve has a second flow chamber and a second flow orifice for bidirectional gas flow.

[0008] The pressure gauge includes a movement, on the top of which a resilient element is detachably mounted.

[0009] As a further description of the above technical solution, the mounting connector is made of metal.

[0010] As a further description of the above technical solution, the mounting connector is connected to the pressure gauge and the bidirectional control valve through the first flow hole.

[0011] As a further description of the above technical solution, the bidirectional control valve is made of metal.

[0012] As a further description of the above technical solution, the bidirectional control valve is connected to the outside or the gas supply end through the second flow hole.

[0013] As a further description of the above technical solution, the bottom of the movement is detachably connected to the mounting connector.

[0014] As a further description of the above technical solution, a drawing board assembly is detachably mounted on one side of the elastic element.

[0015] As a further description of the above technical solution, a pointer assembly is detachably installed on one side of the drawing board assembly, and the pointer assembly is rotatably connected to the elastic element.

[0016] As a further description of the above technical solution, the elastic element and the drawing board assembly are covered with a case, and a transparent cover is detachably installed on one side of the case.

[0017] As a further description of the above technical solution, a cover ring is installed at the connection part between the watch case and the transparent cover, and the cover ring is annularly clamped on the outside of the watch case and the transparent cover.

[0018] The beneficial effects of this utility model are as follows:

[0019] In this invention, a two-way control valve is added to one end of the mounting connector. After the gas to be measured is input, the corresponding pressure value is displayed by the pressure gauge. When the displayed value is too high, the gas is released through the two-way control valve to obtain the required pressure value. When the displayed value is too low, the gas is added through the two-way control valve to obtain the required pressure value. This effectively improves the detection accuracy and operation convenience of the pressure gauge.

[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 inflation / deflation pressure control instrument of this utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of the gas filling and discharging pressure control instrument of this utility model.

[0023] Figure label:

[0024] 1. Installation connector; 11. First flow chamber; 12. First flow hole; 2. Pressure gauge; 21. Mechanism; 22. Elastic element; 23. Drawing board assembly; 24. Pointer assembly; 25. Gauge case; 26. Transparent cover; 27. Cover ring; 3. Detection end; 4. Two-way control valve; 41. Second flow chamber; 42. Second flow hole; 5. Air supply end. 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 gas filling / discharging pressure control instrument includes: a mounting connector 1 and a two-way control valve 4.

[0027] Among them, the two-way control valve 4 is equipped with a valve spindle, which can flexibly adjust the on / off state and flow rate of gas (as prior art, it is not shown in the figure);

[0028] It is understandable that the mounting connector 1 is connected to the pressure gauge 2 and the detection end 3 respectively, while the two-way control valve 4 is connected to the pressure gauge 2 through the mounting connector 1. It can release or introduce gas as needed when the pressure gauge 2 is detecting, thereby obtaining the required pressure value, which effectively improves the efficiency and accuracy of pressure detection.

[0029] Furthermore, both the mounting connector 1 and the two-way control valve 4 are made of high-strength metal. This material not only has excellent pressure resistance and can withstand the working requirements of high-pressure environments, but also has good corrosion resistance, which can effectively resist the erosion of various gas media and ensure the long-term stability of the connection.

[0030] Correspondingly, the mounting connector 1 has a first flow chamber 11 and a first flow hole 12, while the bidirectional control valve 4 has a second flow chamber 41 and a second flow hole 42, which can minimize gas flow resistance, ensure rapid gas flow, and achieve a tight fit between the pressure gauge 2 and the bidirectional control valve 4.

[0031] Specifically, the mounting connector 1 is connected to the pressure gauge 2 and the two-way control valve 4 through the first flow hole 12, while the two-way control valve 4 is connected to the outside or the gas supply end 5 through the second flow hole 42, so that the pressure gauge 2 can obtain accurate pressure data in real time, realize precise control of system pressure, and meet the pressure detection needs in different scenarios.

[0032] Please continue reading. Figures 1-2 In this embodiment, the pressure gauge 2 includes a movement 21, the bottom of which is detachably connected to the mounting connector 1, which facilitates the quick assembly and disassembly of the pressure gauge 2 during installation, debugging and maintenance.

[0033] Furthermore, a removable elastic element 22 is mounted on the top of the movement 21, capable of elastic deformation under gas pressure, with the degree of deformation linearly related to the applied pressure. A chart assembly 23 is removably mounted on one side of the elastic element 22, clearly displaying key information such as pressure scale and unit markings. A pointer assembly 24 is removably mounted on one side of the chart assembly 23, rotatably connected to the elastic element 22. When the elastic element 22 deforms under pressure, it drives the pointer assembly 24 to rotate around a fixed axis, allowing the pointer to accurately indicate the corresponding pressure value on the dial. The elastic element 22 and the chart assembly 23 are externally covered... The pressure gauge 2 has a housing 25, typically made of metal or high-strength engineering plastic, which provides excellent pressure resistance, dust resistance, and impact resistance, enabling it to adapt to complex and changing industrial environments. A transparent cover 26, made of scratch-resistant and wear-resistant glass or polycarbonate, is detachably installed on one side of the housing 25. This cover not only provides operators with a clear view of the dial but also effectively prevents external dust, moisture, and other contaminants from entering the gauge and affecting measurement accuracy. A retaining ring 27 is installed at the connection between the housing 25 and the transparent cover 26. The retaining ring 27 is annularly clamped on the outside of the housing 25 and the transparent cover 26 to further enhance the sealing effect and ensure the stability and reliability of the pressure gauge 2 during long-term use.

[0034] Working principle: A two-way control valve 4 is added to one end of the mounting connector 1. When the gas to be measured enters the system through the detection end 3, the gas is smoothly transmitted to the inside of the pressure gauge 2 through the first flow chamber 11 and the first flow hole 12 of the mounting connector 1. The elastic element 22 inside the pressure gauge 2 deforms under the action of gas pressure, and the pressure signal is converted into mechanical displacement through the mechanism 21, which in turn drives the pointer to accurately indicate the current pressure value on the dial, providing the operator with intuitive pressure data feedback.

[0035] When the displayed value is too high, the valve spindle can be rotated or pressed with a specific tool to open the internal passage of the two-way control valve 4. Excess gas can be discharged into the external environment in an orderly manner along the second flow chamber 41 and the second flow hole 42 of the two-way control valve 4. The elastic element 22 recovers its deformation, and the pointer slowly falls back until the preset target pressure value is reached, thus achieving precise pressure reduction. When the displayed value is too low, after connecting the gas supply end 5, the position of the valve spindle is controlled to introduce supplementary gas along the second flow hole 42 and the second flow chamber 41 of the two-way control valve 4, which pushes the elastic element 22 to produce a new deformation, causing the pointer to rise to obtain the required pressure value. This effectively improves the detection accuracy and operation convenience of the pressure gauge 2.

[0036] 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 control instrument for inflation and deflation, characterized in that, include: The mounting connector (1) is connected to the pressure gauge (2) and the detection end (3) respectively. The mounting connector (1) has a first flow cavity (11) and a first flow hole (12). A two-way control valve (4) is connected to a pressure gauge (2) via a mounting connector (1). The two-way control valve (4) has a second flow chamber (41) and a second flow hole (42) for bidirectional gas flow. The pressure gauge (2) includes a movement (21) on which an elastic element (22) is detachably mounted.

2. The inflation / deflation pressure control instrument according to claim 1, characterized in that, The mounting connector (1) is made of metal.

3. The inflation / deflation pressure control instrument according to claim 2, characterized in that, The mounting connector (1) is connected to the pressure gauge (2) and the two-way control valve (4) through the first flow hole (12).

4. The inflation / deflation pressure control instrument according to claim 1, characterized in that, The bidirectional control valve (4) is made of metal.

5. The inflation / deflation pressure control instrument according to claim 4, characterized in that, The bidirectional control valve (4) is connected to the outside or the gas supply end (5) through the second flow hole (42).

6. The inflation / deflation pressure control instrument according to claim 1, characterized in that, The bottom of the movement (21) is detachably connected to the mounting connector (1).

7. The inflation / deflation pressure control instrument according to claim 6, characterized in that, A drawing board assembly (23) is detachably mounted on one side of the elastic element (22).

8. The inflation / deflation pressure control instrument according to claim 7, characterized in that, A pointer assembly (24) is detachably mounted on one side of the drawing board assembly (23), and the pointer assembly (24) is rotatably connected to the elastic element (22).

9. The inflation / deflation pressure control instrument according to claim 8, characterized in that, The elastic element (22) and the drawing board assembly (23) are covered by a watch case (25), and a transparent cover (26) is detachably installed on one side of the watch case (25).

10. The inflation / deflation pressure control instrument according to claim 9, characterized in that, A cover ring (27) is installed at the connection between the watch case (25) and the transparent cover (26), and the cover ring (27) is annularly arranged on the outside of the watch case (25) and the transparent cover (26).

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