The function of negative pressure ring in rubber joint

Adding a negative pressure ring inside the rubber joint can greatly improve the performance of the rubber shock-absorbing joint. Negative pressure rubber joints are often used in cold water, hot water, compressed air, natural gas and other media. It has unique design, novel structure and good sealing performance, which can solve the pipe burst caused by thermal expansion and cold contraction of the pipeline and the damage of pipeline connection equipment. Effectively improve the service life of the pipeline and protect the equipment.

Negative pressure comes from inside the pipe. Due to various reasons, the internal air is drastically reduced, resulting in a suction state. The tube is naturally bearable. At this time, it depends on whether the rubber joint can completely resist. If it cannot resist negative pressure, it will damage the rubber joint. Since the negative pressure ring is as large as the inside, the negative pressure ring is generally installed before the rubber joint is assembled. The negative pressure rubber joint is manufactured by Henan Shunying New Energy Co., Ltd. using a new process of blowing mold. They consist of a sphere composed of inner rubber layer, reinforcement layer, middle rubber layer, outer rubber layer and loose forged low carbon steel flange. The product has high pressure resistance, good elasticity, large displacement, good vibration and noise reduction, and easy installation. Can be widely used in water supply and drainage, fire protection, compressors, papermaking, pharmaceuticals, ships, pumps, fans and other pipeline systems.

Installing the negative pressure ring is an essential work for the rubber joint, because the positive pressure of the rubber joint can reach a high level, but the negative pressure will be reversed. For the installation of negative pressure rings, rubber joints are practical.

It is well known that the operation of pipes can put pressure on rubber joints. Usually, it is what we know as positive pressure. Today we mainly talk about the negative pressure of rubber joints. If the pipe is running under negative pressure, we need to add a negative pressure ring inside the sphere!

The negative pressure resistant rubber flexible joint has good wear resistance while resisting negative pressure. The stainless steel return device is used inside to ensure the practicality of use. The diversion device adopts a structure similar to stainless steel bellows to ensure that the rubber flexible joint will not be flattened when used. And the rubber part does not directly contact the powder or mud medium, which greatly prolongs the service life of the rubber flexible joint.