There are various kinds of hoses in daily life, which meet the needs of people's daily work and life. Accordingly, different hoses also need different hose coupling types for connection. This article mainly introduces the classification of some common hose couplings.
1. Quick plug type hose coupling: it is commonly used for the connection of nylon hose and polyurethane hose in pneumatic circuit. After the hose is inserted in use, it is fixed by the elastic snap ring in the hose couplings and sealed by the O-ring. When unloading the hose, just press down the elastic snap ring to simply pull out the hose. There are many kinds of quick plug-in couplings, and the size series are also very complete. It is the most widely used type of hose coupling.
2. Quick-change coupling: it is a kind of hose pipe coupling that can realize quick loading and unloading without tools. It is especially suitable for the hoses that need to be installed and disassembled frequently. The quick-change hose coupling is equipped with one-way elements inside. When the couplings are connected with each other, they are positioned by steel balls, and the air channels on both sides are connected. When the couplings are unloaded, the air channels are disconnected, so it is no longer necessary to install the air source switch. The quick-change coupling has internal thread, external thread, metric thread, cylindrical hose thread, tapered hose thread, and one end is thread, the other end is pagoda coupling, both ends are pagoda coupling and both ends are thread and other forms. The coupling body is made of brass or steel. The surface of brass coupling is generally polished with nickel-chromium plating.
3. Quick screwing hose coupling: its structure has an arc-shaped boss on the outer conical surface of the coupling body. When hoses are connected, they are sleeved on the outer conical surface of the coupling body, and the nut is tightened to play a sealing role. It is suitable for the connection of nylon hose and plastic hose.
Precautions for using hoses and hose couplings:
a. During the design of hose line, the space position of hose line installation, disassembly and debugging shall be ensured to avoid the interference of mechanical devices on the hose line.
b. Before connecting hose, compressed air shall be used to remove impurities in the hose and coupling.
c. The hose laying shall be neat and beautiful, grouped, numbered and bundled for easy inspection. Pay attention to the working environment temperature of the hose, because it will directly affect the pressure resistance and reliability of the hose.
d. The hose should not be too long in order to reduce the loss of air pressure in the line. If the curvature radius of the hose line is above the specified value, the bending part shall not be too close to the coupling to avoid leakage and hose torsion.
e. When tightening the threaded hose coupling, pay attention to the proper tightening torque.
SUZHOU SEAPEAK CO.,LTD specializes in the production of various kinds of hoses and hose couplings. Please choose suitable products according to your needs.
