Air tightness detection device for brass exhaust valve

Abstract

The utility model relates to the field of detection devices of valves, in particular to an air tightness detection device of a brass exhaust valve, which comprises an air source machine, a barometer, a cam divider and a division disc, the division disc is arranged on an output shaft of the cam divider, and a circle of surrounding part clamping holes are arranged on the division disc by taking the output shaft as the center. The device is characterized in that one part clamping hole serves as a detection position, an air pump located on the outer edge of the segmentation disc is arranged in the radial direction of the detection position, a plugging air cylinder is arranged under the detection position, a plugging pipe is arranged at the front end of a cylinder shaft of the plugging air cylinder, a barometer is arranged on the plugging pipe, and a pressing air cylinder is hung over the detection position. When the pressing air cylinder is pressed downwards, the front end of a cylinder shaft of the pressing air cylinder acts on the brass exhaust valve in the part clamping hole. Compared with the prior art, the brass exhaust valve does not need to be soaked in water and is kept dry all the time, detection procedures are reduced, procedures are saved, product delivery efficiency can be better improved, the detection speed is high, and the accuracy rate is also high.

Description

Technical Field

[0001] The utility model relates to the field of valve detection equipment, in particular to an air tightness detection device for a brass exhaust valve. Background Art

[0002] The brass exhaust valve is a kind of fitting commonly used in heating system or water pipe system, such as Figure 1 As shown, it is mainly used to discharge air or other gases accumulated in the pipeline to ensure the normal operation of the pipeline. The brass exhaust valve is made of brass and is resistant to corrosion, high temperature and pressure.

[0003] At present, there are two main methods for valve air tightness. The first is the air pressure difference detection method, which mainly selects standard parts and test parts to fix, and passes gas into the standard parts and the test parts at the same time, and determines whether the air tightness of the test parts is qualified by the change of the gas pressure difference between the standard parts and the test parts; the second is the hydraulic bubble leaching method, which mainly seals the two ends of the test part, places it in water, and observes whether there are bubbles coming out.

[0004] The traditional valve air tightness testing method is not rigorous, the testing error is large, and it cannot intuitively display the air tightness of the exhaust valve. It is difficult to accurately judge the quality of the product, and the credibility of the conclusion is low. The second hydraulic bubble leaching method also requires cleaning the valve after testing. The process is relatively complicated and not conducive to rapid implementation. Furthermore, the exhaust port of the brass exhaust valve is on the side of the valve body. When using air pressure to test the air tightness, how to fix the brass exhaust valve is also an urgent problem to be solved. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide an air tightness detection device for a brass exhaust valve that can be quickly fixed and formed into an assembly line.

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] The air tightness detection device of the brass exhaust valve includes an air source machine, a pressure gauge, a cam divider and a dividing disk. The dividing disk is installed on the output shaft of the cam divider. A circle of part clamping holes is arranged on the dividing disk with the output shaft as the center. One of the part clamping holes is a detection position. An air pump is arranged on the outer edge of the dividing disk in the radial direction of the detection position. A sealing cylinder is arranged directly below the detection position. A sealing pipe is arranged at the front end of the cylinder shaft of the sealing cylinder. A pressure gauge is arranged on the sealing pipe. A clamping cylinder is suspended directly above the detection position. When the clamping cylinder is pressed down, the front end of its cylinder shaft acts on the brass exhaust valve in the part clamping hole.

[0008] Furthermore, the air pump is installed at the front end of the cylinder shaft of the movable cylinder, and the extending direction of the movable cylinder faces the clamping hole of the part.

[0009] Furthermore, a marking position is provided at a downstream position of the detection position, a marking cylinder is provided just above the marking position, and a marking pen is installed at the front end of the marking cylinder.

[0010] Furthermore, the power supply of the marking cylinder is connected to a relay, and the switch of the relay is controlled by the air pressure of the barometer.

[0011] Furthermore, the aperture of the part clamping hole is smaller than the waistline diameter of the brass exhaust valve.

[0012] Furthermore, upper and lower material positions are provided on the dividing disk, and a clamping manipulator disposed outside the dividing disk is provided in the radial direction of the upper and lower material positions, and a brass clamping frame is provided at the front end of the clamping manipulator.

[0013] The air tightness detection device designed above can automatically fix the brass exhaust valve for air tightness detection. The worker only needs to place the brass exhaust valve on the partition plate, and the partition plate will rotate to bring it to the detection position for rapid detection. It can quickly screen out leaking unqualified brass exhaust valves. If the pre-set air pressure data is not reached, the marking cylinder will be started to mark the unqualified products, and the workers with the marked number can directly remove them. Compared with the existing technology, the brass exhaust valve does not need to be immersed in water and is always kept dry, which reduces the detection process, saves procedures, and is more conducive to improving the efficiency of product delivery. It also has a high detection rate and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the brass exhaust valve;

[0015] Figure 2 It is a schematic diagram of the main structure of the air tightness detection device of the brass exhaust valve;

[0016] Figure 3 It is a schematic diagram of the top view of the air tightness detection device of the brass exhaust valve. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments.

[0018] like Figure 2 , Figure 3The air tightness detection device of the brass exhaust valve shown in the figure includes an air source machine, a pressure gauge 1, a cam divider 2, and a dividing disk 3. The dividing disk 3 is installed on the output shaft of the cam divider 2. A circle of part clamping holes 4 are arranged on the dividing disk 3 with the output shaft as the center. The aperture of the part clamping holes 4 is smaller than the waistline diameter of the brass exhaust valve 5. One of the part clamping holes 4 is a detection position. An air pump 7 located on the outer edge of the dividing disk 3 is arranged in the radial direction of the detection position 6. A sealing cylinder 8 is arranged directly below the detection position 6. A sealing pipe 9 is arranged at the front end of the cylinder shaft of the sealing cylinder 8. A pressure gauge 1 is arranged on the sealing pipe 9. A clamping cylinder 10 is suspended directly above the detection position. When the clamping cylinder 10 is pressed down, the front end of its cylinder shaft acts on the brass exhaust valve 5 in the part clamping hole.

[0019] The air pump 7 is installed at the front end of the cylinder shaft of the mobile cylinder 11, and the extension direction of the mobile cylinder 11 is facing the clamping hole of the part. It is equivalent to that the partition plate 3 rotates with the brass exhaust valve 5 under the action of the cam divider 2. After rotating to the detection position, the mobile cylinder 11 blocks the upper air port of the brass exhaust valve 5 with the air pump 7, and the clamping cylinder 10 blocks the lower air port of the exhaust valve, inflates it, and observes the changes in the barometer to judge the air tightness. After the detection, the two cylinders withdraw, and the partition plate continues to rotate, bringing the inspected brass exhaust valve to the lower moving position.

[0020] A marking position 12 is provided downstream of the detection position 6, and a marking cylinder 13 is provided just above the marking position 12. A marking pen is installed at the front end of the marking cylinder 13. The power supply of the marking cylinder 13 is connected to a relay, and the switch of the relay is controlled by the air pressure of the barometer. If the brass exhaust valve is qualified after the inspection, the barometer is within the preset value. If it is unqualified, the value of the barometer is not within the set range, and the relay will be turned on by the sensor, thereby starting the marking cylinder. The marking cylinder draws a far point on the top of the brass exhaust valve with a marking pen. After the split disk rotates over, the worker sees the marked exhaust valve and takes it out and places it separately.

[0021] The dividing plate 3 is also provided with an upper and lower material position, and a clamping manipulator is provided outside the dividing plate in the radial direction of the upper and lower material positions, and a brass clamping frame is provided at the front end of the clamping manipulator. The clamping manipulator can be a multi-degree-of-freedom robot, or a lifting frame 14, on which a material discharge cylinder 15 is installed and laterally retracted, and a clamping cylinder is provided at the front end of the material discharge cylinder 15. After clamping the brass exhaust valve, the lifting frame first rises to bring the exhaust valve out of the part clamping hole, and then withdraws it laterally to release the part.

[0022] The above is a detailed introduction to the air tightness detection device for the brass exhaust valve provided by the utility model. The description of the specific embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, the utility model can also be improved and modified without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. The air tightness detection device of the brass exhaust valve includes an air source machine, an air pressure gauge, a cam divider, and a dividing plate. The dividing plate is installed on the output shaft of the cam divider. A circle of parts clamping holes is arranged on the dividing plate with the output shaft as the center. The characteristics are: One of the part clamping holes is the detection position, and an air pump is provided on the outer edge of the dividing disk in the radial direction of the detection position. A sealing cylinder is provided directly below the detection position, and a sealing pipe is provided at the front end of the cylinder shaft of the sealing cylinder. A pressure gauge is provided on the sealing pipe. A clamping cylinder is suspended directly above the detection position. When the clamping cylinder is pressed down, the front end of its cylinder shaft acts on the brass exhaust valve in the part clamping hole.

2. The air tightness detection device for the brass exhaust valve according to claim 1 is characterized in that: The air pump is installed at the front end of the cylinder shaft of the moving cylinder, and the extending direction of the moving cylinder is facing the clamping hole of the part.

3. The air tightness detection device for a brass exhaust valve according to claim 1, characterized in that: A marking position is arranged at the downstream position of the detection position, a marking cylinder is arranged just above the marking position, and a marking pen is installed at the front end of the marking cylinder.

4. The air tightness detection device for a brass exhaust valve according to claim 3 is characterized in that: The power supply of the marking cylinder is connected to a relay, and the switch of the relay is controlled by the air pressure of the barometer.

5. The air tightness detection device for a brass exhaust valve according to claim 1, characterized in that: The aperture of the part clamping hole is smaller than the waistline diameter of the brass exhaust valve.

6. The air tightness detection device for a brass exhaust valve according to claim 1, characterized in that: The dividing disk is also provided with an upper material position and a lower material position. A clamping manipulator arranged outside the dividing disk is provided in the radial direction of the upper material position and the lower material position. The front end of the clamping manipulator is provided with a brass clamping frame.

Images