Quality requirements and equipment process of spring pneumatic butterfly valve
The following is the assembly process of the shock absorber:
1. The shock absorber shall be inspected on its appearance. The rubber shall not show cracks, and the rubber and metal shall be separated from each other. The effective time of the shock absorber shall be checked according to the temporary technical regulations provided by the shock absorber;
2. Fix the shock absorber on the upper side of the base according to the design of the shock absorber of the auxiliary engine, check the adhesion of the shock absorber and the supporting surface of the base, and request that a feeler gauge with a thickness of 0.1 mm cannot be inserted. In some positions, a feeler gauge with a thickness of 0.1 mm to 0.2 mm can be inserted, but the insertion range cannot be greater than 35% of the perimeter of the bottom surface of the shock absorber, Its depth shall not be greater than 20mm;
3. Draw the bolt hole line for fastening the shock absorber on the bearing surface of the base and stop drilling at the same time. If the batch size is larger, you can first make an example according to the base of the machine to be assembled, place the example on the center of the bearing surface of the base, draw the bolt hole, and then start drilling, assuming that it is single or small in batch size, At this time, each shock absorber can be temporarily installed on the base of the auxiliary machine, and then the auxiliary machine and the shock absorber can be lifted to the base together. After the shock absorber is correctly positioned according to the rules on the drawing, stop marking on the base according to the fastening bolt holes on the shock absorber, and then lift the auxiliary machine and the shock absorber together, and stop drilling on the base;
4. Fasten the shock absorber on the base with the fastening bolts;

Manufacturing method of pneumatic butterfly valve:
The performance of stainless steel pneumatic butterfly valve depends on its construction method, which varies according to its manufacturing method: the electroforming method can obtain corrugated pipes with average wall thickness and high precision; The welding method can obtain the bellows with excellent elasticity; The mechanical spinning method can obtain the bellows with extra large nominal diameter; The bellows with elastic support can be obtained by machining and cutting method; The hydraulic method can obtain better comprehensive bellows
When selecting hoses, appropriate hoses, connectors and hose assemblies should be selected according to the specific application site. The factors considered include: hose type, hose size, hose length, system working pressure, system fluid and application environment. Please refer to the product specification for selection.
Failure of hose assembly without proper selection and installation of hose, connector and hose assembly will lead to shortening of service life of hose, loss of wealth, and serious injury to body. During installation, it shall be considered that the bending of the hose shall not be less than the minimum bending radius of the hose, the rough surface or sharp corners will cause abrasion to the hose, and the length of the hose shall be able to ensure the potential movement of both ends of the hose. When the hose assembly is in use, the pull off of the connector or the explosion within 25 mm from the connector shall not be regarded as the quality problem of the hose, which is related to the quality of the connector and the quality of the tooling. The crack of the outer glue has a certain relationship with the application time, temperature and environment. When spraying paint, the nitrocellulose paint will accelerate the crack of the hose, so the hose should be stopped from maintenance with film and other coverings when the whole machine is painted.