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;

Song Xia tells you how to distinguish the specifications of high-pressure hose. According to the manufacturing process, the high-pressure hose is mainly divided into high-pressure steel wire braided hose and high-pressure steel wire wound hose:
The structure of high pressure steel wire winding hose is mainly composed of inner rubber layer, middle rubber layer, four or more layers of steel wire reinforcement layer alternately wound and outer rubber layer.
The inner rubber layer can make the escort medium accept the pressure, and maintain the steel wire free from corrosion. The outer rubber layer can maintain the steel wire free from damage（ ф 0.3-2.0 strengthening layer) is the skeleton data for strengthening.
Use of high pressure steel wire wound tubing (high pressure tubing) And temperature of petroleum based (such as mineral oil, soluble oil, hydraulic oil, fuel oil, smooth oil) and water-based liquids (such as emulsion, oil-water emulsion, water) and liquid transmission, with the maximum working pressure of 70-120Mpa.
Working temperature of high pressure steel wire wound hose (high pressure hose): - 40 ℃~120 ℃ Variety: 4SP type - four layer steel wire wound medium pressure hose.