Gas tightness detection device for oxygen respirator calibrator

Abstract

The utility model belongs to the technical field of detection equipment, and particularly relates to an oxygen respirator calibrator airtightness detection device which comprises a workbench, an integrated control valve assembly and a control box, and the integrated control valve assembly and the control box are fixed on the workbench. The oxygen respirator calibrator and the gas cylinder are fixed to the top of the workbench and connected with the integrated control valve assembly, the integrated control valve assembly and the control box are arranged in front of the oxygen respirator calibrator to facilitate detection operation, the integrated control valve assembly comprises a valve block and an electromagnetic pressure regulating valve arranged on the valve block, a valve gas inlet of the valve block is communicated with the gas cylinder, and a valve gas outlet of the valve block is communicated with the gas cylinder. The valve air outlet of the valve block is communicated with the water column meter air inlet of the oxygen respirator calibrator, the control box is electrically connected with the integrated control valve assembly, the integrated control valve assembly can ensure that the pressure of output air is stable, pressure fine adjustment is achieved, and the air tightness detection result is more accurate and free of fluctuation.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to an air tightness detection device for an oxygen breathing apparatus calibrator. Background Art

[0002] Oxygen respirators are respiratory protection products used in toxic and harmful gas environments. The quality of oxygen respirators is directly related to the health and life safety of users. National safety standards stipulate that the low-pressure air tightness of oxygen respirators is a must-check item. Oxygen respirator calibrators are instruments used to calibrate the various performance of oxygen respirators. They can intuitively detect the quality of oxygen respirators. The airtight performance of oxygen respirator calibrators directly affects the accuracy of the low-pressure airtightness test results of oxygen respirators. Leakage problems in oxygen respirator calibrators will cause distortion of test results. Therefore. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an air tightness detection device for an oxygen breathing apparatus calibrator.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] An oxygen respirator tester air tightness detection device comprises a workbench, an integrated control valve assembly and a control box, the oxygen respirator tester and a gas cylinder are fixed on the top of the workbench, the integrated control valve assembly and the control box are arranged in front of the oxygen respirator tester and fixed on the workbench, the integrated control valve assembly comprises a valve block and an electromagnetic pressure regulating valve arranged on the valve block, the valve air inlet of the valve block is communicated with the gas cylinder, the valve air outlet of the valve block is communicated with the water column meter air inlet of the oxygen respirator tester, and the control box is electrically connected to the integrated control valve assembly.

[0006] As an embodiment of the utility model, the integrated control valve assembly also includes a needle fine-tuning valve and a water column check valve, the needle fine-tuning valve is connected to the air outlet of the electromagnetic pressure regulating valve, the water column check valve is installed at the air outlet of the needle fine-tuning valve, and the air outlet of the water column check valve is connected to the mouthpiece of the oxygen respirator through a hose.

[0007] As an implementation mode of the utility model, a high-pressure pressure gauge and a low-pressure pressure gauge are provided on the valve block, the high-pressure pressure gauge is connected to the valve air inlet, and the low-pressure pressure gauge is connected to the electromagnetic pressure regulating valve outlet.

[0008] As an implementation mode of the utility model, an operation panel is provided on the outer surface of the control box, and a control module is provided on the box body. The control module is electrically connected to the operation panel and the electromagnetic pressure regulating valve.

[0009] As an implementation mode of the utility model, the operation panel includes a start button, a stop button and a touch screen, and the touch screen is used to set the operating parameters of the electromagnetic pressure regulating valve.

[0010] As an implementation mode of the utility model, a plurality of baffles are arranged on the workbench to fix the oxygen respirator calibrator, the baffles can adjust the position along the slideway on the workbench, and the baffles can rotate around their own fixed axes to adjust the angles.

[0011] As an implementation mode of the utility model, a chuck is provided on the workbench to fix the gas cylinder.

[0012] As an implementation mode of the utility model, the chuck is provided with three spring-reset clamping plates in a circular array.

[0013] The beneficial effects of adopting the above technical solution are:

[0014] The utility model provides an oxygen respirator calibrator air tightness detection device, comprising a workbench, an integrated control valve assembly and a control box, wherein the integrated control valve assembly and the control box are fixed on the workbench, the oxygen respirator calibrator and a gas cylinder are fixed on the top of the workbench and connected with the integrated control valve assembly, the integrated control valve assembly and the control box are arranged in front of the oxygen respirator calibrator for easy detection operation, the integrated control valve assembly comprises a valve block, an electromagnetic pressure regulating valve, a needle-type fine-tuning valve and a water column check valve are arranged on the valve block, the valve air inlet of the valve block is connected with the gas cylinder, the valve air outlet of the valve block is connected with the air inlet of the water column meter, the gas pressure output by the gas source can be stabilized, the gas path pressure can be fine-tuned, the liquid level of the water column meter rises smoothly, the integrated control valve assembly can ensure the stability of the output gas pressure, realize pressure fine-tuning, and make the air tightness detection result more accurate and without fluctuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from another angle;

[0017] Figure 3 It is a front structural schematic diagram of the utility model;

[0018] Figure 4 It is a schematic diagram of the top structure of the utility model.

[0019] Among them: 1. Workbench; 1-1. Baffle; 1-2. Chuck; 2. Integrated control valve assembly; 2-1. Valve block; 2-1-1. Valve air inlet; 2-1-2. Valve air outlet; 2-2. Solenoid pressure regulating valve; 2-3. Needle fine-tuning valve; 2-4. Water column check valve; 2-5. High-pressure pressure gauge; 2-6. Low-pressure pressure gauge; 3. Control box; 3-1. Operation panel; 4. Oxygen respirator calibrator; 4-1. Water column gauge air inlet; 5. Gas cylinder; 6. Hose; 7. Oxygen respirator mouthpiece. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is clearly and completely described below in conjunction with specific embodiments.

[0021] like Figures 1 to 4 The oxygen respirator calibrator air tightness detection device shown comprises a workbench 1, an integrated control valve assembly 2 and a control box 3. The oxygen respirator calibrator 4 and the gas cylinder 5 are fixed on the top of the workbench 1. The integrated control valve assembly 2 and the control box 3 are arranged in front of the oxygen respirator calibrator 4 and fixed on the workbench 1. The integrated control valve assembly 2 comprises a valve block 2-1 and an electromagnetic pressure regulating valve 2-2 arranged on the valve block 2-1. The valve air inlet 2-1-1 of the valve block 2-1 is connected to the gas cylinder 5, and the air outlet 2-1-2 of the valve block 2-1 is connected to the water column meter air inlet 4-1 of the oxygen respirator calibrator 4. The control box 3 is electrically connected to the integrated control valve assembly 2.

[0022] The integrated control valve assembly 2 also includes a needle fine-tuning valve 2-3 and a water column check valve 2-4. The needle fine-tuning valve 2-3 is connected to the outlet of the electromagnetic pressure regulating valve 2-2. The water column check valve 2-4 is installed at the outlet of the needle fine-tuning valve 2-3. The outlet of the water column check valve 2-4 is connected to the mouthpiece 7 of the oxygen breathing apparatus through a hose 6. The water column check valve 2-4 can prevent gas from flowing back. A high-pressure pressure gauge 2-5 and a low-pressure pressure gauge 2-6 are arranged on the valve block 2-1. The high-pressure pressure gauge 2-5 is connected to the valve air inlet 2-1-1. The valve air inlet 2-1-1 is connected to the gas cylinder 5 through a high-pressure connecting pipe. The low-pressure pressure gauge 2-6 is connected to the outlet of the electromagnetic pressure regulating valve 2-2. The high-pressure pressure gauge 2-5 displays the pressure of the gas output from the gas cylinder 5, and the low-pressure pressure gauge 2-6 displays the pressure after pressure regulation by the electromagnetic pressure regulating valve 2-2.

[0023] An operation panel 3-1 is provided on the outer surface of the control box 3, and a control module is provided on the box body. The control module is electrically connected to the operation panel 3-1 and the electromagnetic pressure regulating valve 2-2. The operation panel 3-1 includes a start button, a stop button and a touch screen. The touch screen is used to set the operating parameters of the electromagnetic pressure regulating valve 2-2 and control the start and stop and time of the electromagnetic pressure regulating valve 2-2.

[0024] An oxygen respirator calibrator fixing area is provided on the workbench 1, and a plurality of baffles 1-1 are provided in the fixing area for fixing the oxygen respirator calibrator 4. The baffles 1-1 can adjust the fixing position along the slideway on the workbench 1, and the baffles 1-1 can rotate around their own fixing axis to adjust the angle. The baffles 1-1 can keep the oxygen respirator calibrator 4 in an upright state to prevent it from tipping over during operation. In front of the oxygen respirator calibrator fixing area is a gas cylinder fixing area, and the gas cylinder fixing area has a chuck 1-2 to fix the gas cylinder 5. The chuck 1-2 is provided in a circular array with three spring-reset chucks that can fix various types of gas cylinders.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oxygen breathing apparatus calibration instrument air tightness detection device, characterized in that: The invention comprises a workbench (1), an integrated control valve assembly (2) and a control box (3); an oxygen breathing apparatus tester (4) and a gas cylinder (5) are fixed on the top of the workbench (1); the integrated control valve assembly (2) and the control box (3) are arranged in front of the oxygen breathing apparatus tester (4) and fixed on the workbench (1); the integrated control valve assembly (2) comprises a valve block (2-1) and an electromagnetic pressure regulating valve (2-2) arranged on the valve block (2-1); a valve air inlet (2-1-1) of the valve block (2-1) is communicated with the gas cylinder (5); a valve air outlet (2-1-2) of the valve block (2-1) is communicated with a water column meter air inlet (4-1) of the oxygen breathing apparatus tester (4); and the control box (3) is electrically connected to the integrated control valve assembly (2).

2. The air tightness detection device of an oxygen breathing apparatus calibrator according to claim 1, characterized in that: The integrated control valve assembly (2) further comprises a needle-type fine-adjustment valve (2-3) and a water column check valve (2-4); the needle-type fine-adjustment valve (2-3) is in communication with an air outlet of the electromagnetic pressure regulating valve (2-2); the water column check valve (2-4) is installed at the air outlet of the needle-type fine-adjustment valve (2-3); and the air outlet of the water column check valve (2-4) is connected to an oxygen breathing apparatus mouthpiece (7) via a hose (6).

3. The air tightness detection device of an oxygen breathing apparatus tester according to claim 1, characterized in that: The valve block (2-1) is provided with a high-pressure pressure gauge (2-5) and a low-pressure pressure gauge (2-6); the high-pressure pressure gauge (2-5) is connected to the valve air inlet (2-1-1), and the low-pressure pressure gauge (2-6) is connected to the air outlet of the electromagnetic pressure regulating valve (2-2).

4. The air tightness detection device of an oxygen breathing apparatus calibrator according to claim 1, characterized in that: An operating panel (3-1) is provided on the outer surface of the control box (3), and a control module is provided on the box body; the control module is electrically connected to the operating panel (3-1) and the electromagnetic pressure regulating valve (2-2).

5. The air tightness detection device of an oxygen breathing apparatus tester according to claim 4, characterized in that: The operation panel (3-1) comprises a start button, a stop button and a touch screen, and the touch screen is used to set the operating parameters of the electromagnetic pressure regulating valve (2-2).

6. The air tightness detection device of an oxygen breathing apparatus calibrator according to claim 1, characterized in that: The workbench (1) is provided with a plurality of baffles (1-1) for fixing the oxygen breathing apparatus tester (4); the baffles (1-1) can adjust their positions along a slideway on the workbench (1); and the baffles (1-1) can rotate around their own fixed axes to adjust their angles.

7. The air tightness detection device of an oxygen breathing apparatus tester according to claim 1, characterized in that: The workbench (1) is provided with a chuck (1-2) for fixing the gas cylinder (5).

8. The air tightness detection device of an oxygen breathing apparatus tester according to claim 7, characterized in that: The chuck (1-2) is provided with three spring-reset chuck plates in a circular array.

Images