First, an overview
Rubber expansion joints are also called rubber expansion joints, flexible rubber joints, rubber telescopic devices, shock absorbers, shock absorbing larynx and soft joints.
The rubber expansion joint is composed of a smooth wave compensation element with rubber flanges at both ends and metal flanges. Loose sleeves are often used in metal flanges. The surface of the waveform compensation element is rubber, and the inner layer is several layers of strong fiber or steel strip (wire) reinforced interlayer. Strengthen the fiber or steel strip (wire) to strengthen the interlayer extending to the two ends of the image rubber flange, and there is a hard steel skeleton in the flange. The rubber expansion joint has the ability to compensate for the larger displacement, and can compensate for the axial, lateral and angular displacement. It has the ability to reduce noise, reduce vibration and certain anticorrosion. It has the characteristics of high pressure resistance, good elasticity, large displacement, good vibration and noise absorption effect and convenient installation. It can be widely used in water supply and drainage, HVAC, fire, compressor, papermaking, pharmaceutical, ship, water pump, fan and other piping systems.
Two. Structure diagram
Three. The selection of rubber expansion Festival:
1. the conventional temperature of rubber joints is -200 ~ 70 degrees C. the instantaneous temperature can reach 115 C and the service temperature is 70~115 C.
The 2. flange joint rubber joint, in the work pressure and the working temperature of higher (200 above the diameter, temperature 70 degrees C above, working pressure more than 1.5Mpa), can be equipped with a limit device flange rubber joint.
3. flange joints of rubber joints, when installing the bolts to connect the flange from the inside of the flange to both ends of the flange, to hand in the washer or spring washer, the bolt should be tightened gradually diagonally.
The rubber joint connected by the movable joint shall not be exchanged at the left and right ends when installing, so as not to cause leakage or damage to the product.