The purpose of rotary joint seals
The purpose of the seal in the rotary joint is to seal the connection and allow one of the two pipeline sections to rotate relative to the other. At the same time, in order to reduce the pressure drop across the connection. Therefore, it is best to place the rotary joint seal in the enlarged axial portion of the entire fluid bearing channel formed by the pipeline section
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The application of rotary joints in the steel industry
Application scenarios of rotary joints: cold rolling mills, hot rolling mills, hot rolling mills, steel mills, etc. printing industry
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The core steps of the inlet and outlet water connection of the rotary joint
Flexible pipes (such as metal hoses) must be used to connect the inlet and outlet, and it is prohibited Rigid pipe To compensate for the axial displacement and concentricity deviation of the rotary joint. The length of the hose should be sufficient to avoid twisting or excessive stretching
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How to replace the O-ring of the rotary joint
ensure that the equipment has stopped running and completely released the fluid pressure (water, oil, or gas) inside the joint. Disconnect the connector from the equipment and remove it from the spindle or pipeline. If the joint is equipped with a flange or threaded connection, use a suitable tool to loosen the fastener.
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The use of rotary joints in the rubber industry
Rotary joints are mainly used in rubber product production for fluid (steam, thermal oil, cooling water) pathways of rotating components such as internal mixers, open mixers, calenders, extruders, and vulcanization equipment
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Why do high-speed rotary joints need to be sealed with silicon carbide
Silicon carbide rings are sintered at high temperatures, and the flat surface is a mirror surface polished with diamond. The characteristics are high hardness, high temperature resistance, and friction resistance. Silicon carbide ring and graphite friction seal, because the powder nature of graphite produces a sealing ring effect. Impurities are difficult to enter the sealing end face
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Maintenance of high-temperature rotary joints
During rotating operation and when supplying high-temperature and high-pressure fluids, please try not to get close to the rotating joint and do not touch it with your hands
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The rotary joint leaked immediately after installation
The concentricity between the hollow shaft and the rotating body is insufficient. Solution: Check the size and accuracy, check the tightness of the metal hose, and adjust the fixed connection with the rotating body
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Installation method of high voltage joint
try to choose the interface of the rotary joint and connect it to the machine with a hose to reduce auxiliary weight and vibration, effectively extending the service life of the rotary joint
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What should do if the rotary joint leaks right after use
the solution of the rotary joint leaks
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How to replace the seal of the rotary joint
Long term use of rotary joints can cause leakage, which is generally caused by insufficient concentricity of the joint docking; The friction surface of the graphite ring has not been worn in
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Introduction to hydraulic multi-path rotary joint
Hydraulic rotary joint is a connecting and sealing device that inputs fluid medium from a stationary pipeline into rotating equipment. The product is applied in various automation industries
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