Air tightness detection device for precision valve

Abstract

The utility model provides an air tightness detection device for a precision valve, which comprises a mounting shell, a discharging shell is arranged in the mounting shell, an electric push rod is arranged right above the discharging shell, a lifting shaft is arranged at the output end of the electric push rod, and an air pressure sensor is arranged at one end of the lifting shaft. The precision valve airtightness detection device is reasonable in design, a precision valve is clamped through the arrangement of the placing block and the lifting shaft moving downwards, a gap between the precision valve and the placing block during airtightness detection is avoided, an air pressure sensor is inserted into the precision valve, meanwhile, an air pump fills air into the precision valve through a pipeline and a pipeline connecting block, and the precision valve airtightness detection efficiency is improved. The air pressure sensor detects the air pressure in the precision valve, so that whether the precision valve leaks air or not can be determined.

Description

Technical Field

[0001] The utility model mainly relates to the field of air tightness detection, and in particular to an air tightness detection device used for a precision valve. Background Art

[0002] Precision valve is a device used in water, steam, air and other media pipelines. Its main function is to control the flow of the medium by adjusting the opening of the opening and closing parts in the valve body, and at the same time adjust the opening of the opening and closing parts with the help of the pressure behind the valve to keep the pressure behind the valve within a certain range. This valve can keep the outlet pressure within the set range when the inlet pressure is constantly changing, thereby protecting the subsequent life and production equipment;

[0003] The air tightness test is mainly to check whether there is leakage in the connection parts of the container. Pressure vessels with extremely or highly toxic media or pressure vessels that are not allowed to have even a small amount of leakage in their design must undergo an air tightness test;

[0004] Precision valves need to be tested for air tightness after production to avoid leakage.

[0005] The inventor discovered the following defects during the operation of the specific embodiment:

[0006] When conducting air tightness test on precision valve, the precision valve needs to be placed inside the air tightness test device, and the openings at both ends of the precision valve need to fit with the air tightness test device. However, when the precision valve is placed at an angle, a gap appears between the precision valve and the air tightness test device, which may easily cause the gas filled inside the air tightness test device to be discharged through the gap, affecting the accuracy of the precision valve test.

[0007] It should be noted that the above contents belong to the technical cognition scope of the inventor. Since the technical contents in this field are vast and too complicated, the above contents of this application do not necessarily constitute prior art. Utility Model Content

[0008] 1. Technical problems to be solved by the utility model:

[0009] The utility model provides an air tightness detection device for a precision valve, which is used to solve the technical problems existing in the above-mentioned background technology.

[0010] 2. Technical solution:

[0011] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: an airtightness detection device for a precision valve, comprising a mounting shell, a discharge shell is arranged inside the mounting shell, an electric push rod is arranged directly above the discharge shell, a lifting shaft is arranged at the output end of the electric push rod, an air pressure sensor is arranged at one end of the lifting shaft, and a fitting structure is arranged at the bottom of the inner wall of the discharge shell, and the fitting structure is arranged directly below the air pressure sensor.

[0012] Furthermore, a display screen is arranged on the top of the outer wall of the installation shell, a control button is arranged in the middle of the outer wall of the installation shell, and safety gratings are arranged on both sides of the inner wall of the installation shell.

[0013] Furthermore, the number of the discharge housings is set to two, and the two discharge housings are symmetrically distributed on both sides of the horizontal center line of the mounting housing.

[0014] Furthermore, the fitting structure includes a mounting ring, a groove is formed on the top of the mounting ring, and a placement block is arranged directly above the mounting ring.

[0015] Furthermore, a pipe connecting block is provided at the bottom of the placement block, and the placement block and the mounting ring are connected via the pipe connecting block and the groove.

[0016] Furthermore, a precision valve connection block is arranged on the top of the placement block, a pipeline connection block is threadedly connected to the outer wall of the placement block, and an insertion shaft is arranged on the bottom of the placement block.

[0017] 3. Beneficial effects:

[0018] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0019] The utility model clamps the precision valve by means of a placement block and a downwardly moving lifting shaft, thereby avoiding a gap between the precision valve and the placement block during air tightness detection, allowing an air pressure sensor to be inserted into the interior of the precision valve, and at the same time an air pump fills gas into the interior of the precision valve through a pipeline and a pipeline connecting block, and the air pressure sensor detects the air pressure inside the precision valve, thereby determining whether the precision valve has an air leakage phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the discharge shell of the utility model;

[0022] Figure 3 It is a schematic diagram of the three-dimensional unfolding structure of the placement block of the utility model.

[0023] Reference numerals:

[0024] 1. Installation shell; 2. Display screen; 3. Control button; 4. Safety grating; 5. Discharge shell; 6. Electric push rod; 7. Lifting shaft; 8. Air pressure sensor; 9. Installation ring; 10. Placement block; 11. Insert shaft; 12. Pipe connection block; 13. Precision valve connection block. DETAILED DESCRIPTION

[0025] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 cannot be understood as a limitation on the present invention.

[0027] 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0029] Refer to the attached Figure 1-3A gas tightness detection device for a precision valve comprises a mounting shell 1, a discharge shell 5 is arranged inside the mounting shell 1, an electric push rod 6 is arranged directly above the discharge shell 5, a lifting shaft 7 is arranged at the output end of the electric push rod 6, an air pressure sensor 8 is arranged at one end of the lifting shaft 7, a fitting structure is arranged at the bottom of the inner wall of the discharge shell 5, and the fitting structure is arranged directly below the air pressure sensor 8.

[0030] Furthermore, a display screen 2 is provided on the top of the outer wall of the installation shell 1, a control button 3 is provided in the middle of the outer wall of the installation shell 1, and safety gratings 4 are provided on both sides of the inner wall of the installation shell 1. The safety gratings 4 are used for safety detection. The control button 3 can be pressed with both hands at the same time to start the internal electric push rod 6.

[0031] Furthermore, the number of the discharge shells 5 is set to two, and the two discharge shells 5 are symmetrically distributed on both sides of the horizontal center line of the installation shell 1. The two set discharge shells 5 can perform air tightness detection on two precision valves at the same time.

[0032] Furthermore, the fitting structure includes a mounting ring 9, a groove is provided on the top of the mounting ring 9, a placement block 10 is arranged directly above the mounting ring 9, a pipe connecting block 12 is arranged at the bottom of the placement block 10, the placement block 10 and the mounting ring 9 are connected through the pipe connecting block 12 and the groove, a precision valve connecting block 13 is arranged on the top of the placement block 10, the outer wall of the placement block 10 is threadedly connected to the pipe connecting block 12, and an insertion shaft 11 is arranged at the bottom of the placement block 10. According to the different positions of the inlet and outlet of the precision valve, the insertion shaft 11 can be adjusted to be inserted into different grooves on the top of the mounting ring 9, so that the air hole on the top of the placement block 10 is connected to the precision valve, and the air hole is communicated with the pipe connecting block 12.

[0033] In this embodiment, when it is necessary to detect the air tightness of the inside of the precision valve through the air tightness detection device, the precision valve is placed on the top of the placement block 10, and then the control button 3 is pressed with both hands. The control button 3 starts the electric push rod 6, and the electric push rod 6 pushes the lifting shaft 7 to move downward. The bottom of the lifting shaft 7 fits with the top of the air seal to fix the precision valve. At the same time, the air pressure sensor 8 is inserted into the interior of the precision valve, and then the air pump pumps the gas into the interior of the precision valve through the pipeline, and then the air pressure sensor 8 detects the air pressure inside the precision valve.

[0034] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. An air tightness detection device for a precision valve, characterized in that: include A mounting shell (1) is provided inside the mounting shell (1), a discharge shell (5) is provided directly above the discharge shell (5), a lifting shaft (7) is provided at the output end of the electric push rod (6), a pressure sensor (8) is provided at one end of the lifting shaft (7), and a fitting structure is provided at the bottom of the inner wall of the discharge shell (5), and the fitting structure is provided directly below the pressure sensor (8).

2. The air tightness detection device for a precision valve according to claim 1, characterized in that: A display screen (2) is arranged on the top of the outer wall of the installation shell (1), a control button (3) is arranged in the middle of the outer wall of the installation shell (1), and safety gratings (4) are arranged on both sides of the inner wall of the installation shell (1).

3. The air tightness detection device for a precision valve according to claim 1, characterized in that: The number of the discharge housings (5) is set to two, and the two discharge housings (5) are symmetrically distributed on both sides of the horizontal center line of the mounting housing (1).

4. The air tightness detection device for a precision valve according to claim 1, characterized in that: The fitting structure comprises a mounting ring (9), a groove is provided on the top of the mounting ring (9), and a placement block (10) is arranged directly above the mounting ring (9).

5. The air tightness detection device for a precision valve according to claim 4, characterized in that: A pipe connection block (12) is provided at the bottom of the placement block (10), and the placement block (10) and the mounting ring (9) are connected via the pipe connection block (12) and the groove.

6. The air tightness detection device for a precision valve according to claim 5, characterized in that: A precision valve connection block (13) is arranged on the top of the placement block (10), a pipeline connection block (12) is threadedly connected to the outer wall of the placement block (10), and an insertion shaft (11) is arranged on the bottom of the placement block (10).

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