Breather valve verification device

Abstract

The utility model provides a breather valve verification device which comprises a constant pressure cylinder, the middle of the upper end face of the constant pressure cylinder is used for placing a breather valve to be tested, a fixing frame is erected on the top of the upper end face of the constant pressure cylinder, a first air cylinder is fixed in the middle of the top end of the fixing frame, and a crankshaft of the first air cylinder vertically penetrates out of the lower portion of the top of the fixing frame. A fastening frame is fixed on the constant-pressure cylinder and is of an n-shaped structure, the two ends of the bottom of the fastening frame abut against and are matched with the two sides of a bottom flange of the breather valve to be tested, a breather pipe used for being inserted into the breather valve to be tested is fixed to the upper end face of the constant-pressure cylinder, and a piston plate is installed in the constant-pressure cylinder in a sliding mode. A second air cylinder used for driving the piston plate to move is fixed to the inner bottom of the constant-pressure barrel. The breather valve to be tested can be conveniently and rapidly disassembled and assembled, and compared with the prior art, the breather valve to be tested is light in overall weight and convenient to carry and use.

Description

Technical Field

[0001] The utility model relates to the technical field of breathing valves, in particular to a breathing valve calibration device. Background Art

[0002] A breathing valve is a special type of valve that can maintain isolation from the atmosphere within a certain pressure range. When the pressure exceeds this range, the breathing valve will open to release the pressure, or inhale air to make up for the pressure difference when the pressure is below this range. Therefore, the main function of the breathing valve is to protect the storage container from overpressure or vacuum, and to avoid damage or deformation caused by excessive or low pressure. During production, the breathing valve will be calibrated to ensure quality.

[0003] At present, the existing breathing valve calibration device is generally a fixed breathing valve calibration platform, which is not only large in size, but also needs to be used with equipment such as an air compressor, a vacuum pump, and a gas cylinder. The whole device is bulky and inconvenient to carry and use.

[0004] To this end, the present application proposes a breathing valve calibration device to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a breathing valve calibration device to address the deficiencies of the prior art, which is not only convenient for quickly disassembling and assembling the breathing valve to be tested, but also has a lighter overall weight than the prior art and is easy to carry and use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a breathing valve calibration device, comprising a constant pressure cylinder for placing the breathing valve to be tested in the middle of the upper end surface, a fixing frame is arranged on the top of the upper end surface of the constant pressure cylinder, a first cylinder is fixed in the middle of the top end of the fixing frame, the machine shaft of the first cylinder vertically passes through the bottom of the top of the fixing frame, and is fixed with a fastening frame, the fastening frame is an n-shaped structure, the bottom ends of the fastening frame are abutted and matched with the two sides of the bottom flange of the breathing valve to be tested, and a ventilation pipe for inserting into the interior of the breathing valve to be tested is fixed on the upper end surface of the constant pressure cylinder, a piston plate is slidably installed in the constant pressure cylinder, and a second cylinder for driving the piston plate to move is fixed to the bottom of the constant pressure cylinder.

[0007] As a further preferred solution, the fixing frame is an n-shaped frame, the bottoms of both ends of the fixing frame are fixed to the edges of both sides of the upper end surface of the constant pressure cylinder, and a horizontal platform for installing the first cylinder is provided at the middle height of the top end of the fixing frame.

[0008] As a further preferred solution, a horizontal abutment plate is fixed to the bottom of the fastening frame, and the abutment plate abuts and cooperates with two sides of the bottom flange of the breathing valve to be tested.

[0009] As a further preferred solution, a sealing gasket is laid on a fixed middle portion of the upper end surface of the constant pressure cylinder, and a through hole is opened in the middle portion of the sealing gasket for the ventilation pipe to vertically pass through.

[0010] As a further preferred solution, a horizontal fixing plate is fixed to the bottom of the constant pressure cylinder, and the bottom of the second cylinder is fixed to the middle of the upper end surface of the fixing plate.

[0011] As a further preferred solution, a pressure gauge is fixed on the outer edge surface of the constant pressure cylinder, the pressure gauge is connected to the top of the constant pressure cylinder, and a control panel is also installed on the outer edge surface of the constant pressure cylinder.

[0012] As a further preferred embodiment, the bottom of the constant pressure cylinder is provided with an opening for maintenance, and the opening is equipped with an inspection cover. A threaded cylinder for threaded insertion into the bottom opening of the constant pressure cylinder is fixed in the middle of the inspection cover, and a sealing ring is arranged around the top of the threaded cylinder.

[0013] The beneficial effects of the utility model are:

[0014] Thanks to the cooperation of the fixing frame, the first cylinder and the fastening frame, the utility model can place the breathing valve to be tested in the middle of the upper end surface of the constant pressure cylinder, start the first cylinder to control the fastening frame to descend, use the abutment plate to abut the bottom flange edge of the breathing valve to be tested, and use the ventilation pipe to extend into the breathing valve to be tested to connect the constant pressure cylinder and the breathing valve to be tested, so that the breathing valve to be tested can be quickly fixed on the constant pressure cylinder, which is easy to use.

[0015] At the same time, thanks to the second cylinder and piston plate arranged in the constant pressure cylinder, the device can easily adjust the air pressure in the constant pressure cylinder. Combined with the setting of the ventilation pipe, the air pressure in the breathing valve to be tested can be adjusted through the ventilation pipe, thereby realizing the calibration of both overpressure and negative pressure states. In addition, the calibration accuracy can be improved by combining with the setting of the pressure gauge.

[0016] In summary, the utility model is not only convenient for quickly disassembling and assembling the breathing valve to be tested, but also has a lighter overall weight and is convenient for carrying and use compared to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure when the utility model is used;

[0018] Figure 2 It is a structural schematic diagram of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the inspection cover of the utility model.

[0021] In the figure: 1. constant pressure cylinder; 101. inspection cover; 102. threaded cylinder; 103. sealing ring; 2. fixing frame; 3. first cylinder; 4. fastening frame; 401. abutment plate; 5. breathing valve to be tested; 6. sealing gasket; 7. ventilation pipe; 8. second cylinder; 9. piston plate; 10. fixing plate; 11. pressure gauge; 12. control panel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] 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", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships 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 referred device or element 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.

[0024] 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.

[0025] Embodiment 1

[0026] like Figure 1 , Figure 2 and Figure 3As shown, the present embodiment provides a breathing valve calibration device, including a constant pressure cylinder 1 for placing a breathing valve 5 to be tested in the middle of the upper end surface, a fixing frame 2 is arranged on the top of the upper end surface of the constant pressure cylinder 1, a first cylinder 3 is fixed in the middle of the top end of the fixing frame 2, the machine shaft of the first cylinder 3 vertically passes through the bottom of the top of the fixing frame 2, and is fixed with a fastening frame 4. In specific implementation, in the present embodiment, the fixing frame 2 is an n-shaped frame body, the bottom of both ends of the fixing frame 2 are fixed to the edges on both sides of the upper end surface of the constant pressure cylinder 1, and a horizontal platform for installing the first cylinder 3 is provided at the middle height of the top end of the fixing frame 2, so that the first cylinder 3 can be started to control the fastening frame 4 to perform lifting and lowering activities directly above the upper end surface of the constant pressure cylinder 1.

[0027] The fastening frame 4 is an N-shaped structure, and horizontal abutment plates 401 are fixed at both ends of the bottom of the fastening frame 4. The abutment plates 401 abut against the two sides of the bottom flange of the breathing valve 5 to be tested, so that when the breathing valve 5 to be tested is placed in the middle of the upper end surface of the constant pressure cylinder 1, the two abutment plates 401 at the bottom of the fastening frame 4 can be used to quickly abut and fix it, which makes it easy to disassemble and assemble the breathing valve 5 to be tested and is convenient to use.

[0028] At the same time, a ventilation pipe 7 for inserting into the interior of the breathing valve 5 to be tested is fixed on the upper end surface of the constant pressure cylinder 1, so that the constant pressure cylinder 1 can be connected with the interior of the breathing valve 5 to be tested through the ventilation pipe 7, and a sealing gasket 6 is fixed in the middle part of the upper end surface of the constant pressure cylinder 1, and a through hole is opened in the middle part of the sealing gasket 6 for the ventilation pipe 7 to vertically pass through, thereby improving the air tightness between the constant pressure cylinder 1 and the interior of the breathing valve 5 to be tested.

[0029] like Figure 3 As shown, a piston plate 9 is slidably installed in the constant pressure cylinder 1, and a second cylinder 8 for driving the piston plate 9 to move is fixed at the bottom of the constant pressure cylinder 1. In specific implementation, a horizontal fixed plate 10 is fixed at the bottom of the constant pressure cylinder 1, and the bottom of the second cylinder 8 is fixed to the middle of the upper end surface of the fixed plate 10. In addition, a pressure gauge 11 is fixed to the outer edge of the constant pressure cylinder 1, and the pressure gauge 11 is connected to the top of the constant pressure cylinder 1, and a control panel 12 is also installed on the outer edge of the constant pressure cylinder 1. Therefore, the second cylinder 8 can be used to drive the piston plate 9 to move to adjust the air pressure in the constant pressure cylinder 1 to achieve overpressure and negative pressure states, and the pressure gauge 11 can be used to accurately observe the air pressure changes.

[0030] In addition, with Figure 4 As shown, an opening for maintenance is provided at the bottom of the constant pressure cylinder 1, and an inspection cover 101 is provided at the opening. A threaded cylinder 102 for threaded insertion into the bottom opening of the constant pressure cylinder 1 is fixed to the middle of the inspection cover 101, and a sealing ring 103 is arranged around the top of the threaded cylinder 102.

[0031] Working principle: When using the breathing valve calibration device, the breathing valve 5 to be tested can be placed in the middle of the upper end surface of the constant pressure cylinder 1, and the fastening frame 4 can be controlled to descend by starting the first cylinder 3. The abutment plate 401 is used to abut the bottom flange edge of the breathing valve 5 to be tested, so as to fix the breathing valve 5 to be tested on the upper end surface of the constant pressure cylinder 1. At this time, the ventilation pipe 7 on the top of the constant pressure cylinder 1 extends into the breathing valve 5 to be tested, thereby connecting the constant pressure cylinder 1 and the breathing valve 5 to be tested, so that the breathing valve 5 to be tested can be quickly fixed on the constant pressure cylinder 1.

[0032] At the same time, when conducting detection, the second cylinder 8 can be started to control the movement of the piston plate 9 in the constant pressure cylinder 1 to adjust the air pressure in the constant pressure cylinder 1. Since the constant pressure cylinder 1 is connected to the breathing valve 5 to be tested through the ventilation pipe 7, the air pressure in the breathing valve 5 to be tested can be adjusted to realize the calibration of the two states of overpressure and negative pressure, and the calibration accuracy can be improved by coordinating with the setting of the pressure gauge 11.

[0033] In summary, the utility model is not only convenient for quickly disassembling and assembling the breathing valve 5 to be tested, but also has a lighter overall weight and is convenient for carrying and use compared to the prior art.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A breathing valve testing device, comprising a constant pressure cylinder (1) for placing a breathing valve (5) to be tested in the middle of the upper end surface, characterized in that: A fixing frame (2) is mounted on the top of the upper end surface of the constant pressure cylinder (1), and a first cylinder (3) is fixed in the middle of the top of the fixing frame (2). The shaft of the first cylinder (3) vertically passes through the bottom of the fixing frame (2) and is fixed with a fastening frame (4). The fastening frame (4) is an n-shaped structure, and the two ends of the bottom of the fastening frame (4) are abutted against the two sides of the bottom flange of the breathing valve (5) to be tested, and a ventilation pipe (7) for inserting into the interior of the breathing valve (5) to be tested is fixed on the upper end surface of the constant pressure cylinder (1). A piston plate (9) is slidably installed in the constant pressure cylinder (1), and a second cylinder (8) for driving the piston plate (9) to move is fixed at the bottom of the constant pressure cylinder (1).

2. A breathing valve calibration device according to claim 1, characterized in that: The fixing frame (2) is an n-shaped frame body, the bottoms of both ends of the fixing frame (2) are fixed to the edges of both sides of the upper end surface of the constant pressure cylinder (1), and a horizontal platform for mounting the first cylinder (3) is provided at the middle height of the top end of the fixing frame (2).

3. A breathing valve calibration device according to claim 1, characterized in that: A horizontal abutment plate (401) is fixed to the bottom of the fastening frame (4), and the abutment plate (401) abuts against two sides of the bottom flange of the breathing valve (5) to be tested.

4. A breathing valve calibration device according to claim 1, characterized in that: A sealing gasket (6) is fixedly laid in the middle of the upper end surface of the constant pressure cylinder (1), and a through hole is opened in the middle of the sealing gasket (6) for the ventilation pipe (7) to vertically pass through.

5. A breathing valve calibration device according to claim 1, characterized in that: A horizontal fixing plate (10) is fixed to the bottom of the constant pressure cylinder (1), and the bottom of the second cylinder (8) is fixed to the middle of the upper end surface of the fixing plate (10).

6. A breathing valve calibration device according to claim 1, characterized in that: A pressure gauge (11) is fixed on the outer edge surface of the constant pressure cylinder (1), the pressure gauge (11) is connected to the top of the constant pressure cylinder (1), and a control panel (12) is also installed on the outer edge surface of the constant pressure cylinder (1).

7. A breathing valve calibration device according to claim 1, characterized in that: The bottom of the constant pressure cylinder (1) is provided with an opening for maintenance, and the opening is matched with an inspection cover (101). A threaded cylinder (102) for threaded insertion into the bottom opening of the constant pressure cylinder (1) is fixed in the middle of the inspection cover (101), and a sealing ring (103) is arranged around the top of the threaded cylinder (102).

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