Plate type air pressure valve with high environment adaptability for rail transit

Abstract

The invention discloses a rail transit plate type air pressure valve with high environmental adaptability. The rail transit plate type air pressure valve comprises an end cover, a three-way valve body assembly is arranged on the outer side of the end cover, an air inlet is formed in the bottom of the three-way valve body assembly, an air outlet is formed in the bottom of the three-way valve body assembly, and a vertical air port is formed in the bottom of the three-way valve body assembly. According to the rail transit plate type air pressure valve with the high environment adaptability, the three-way valve body assembly is fixed to the flat plate type or valve block type connecting body with the corresponding oil port through the screws, elements are convenient to replace, connecting points and installation space are reduced through the plate type connecting mode, vibration and vibration generated when a train runs at a high speed are avoided, and the service life of the train is prolonged. The valve core has the advantages of stable and reliable installation and no vibration noise, the valve core adopts a plug cock structure with upper and lower supports, and the arrangement of the O-shaped rubber sealing ring III and the O-shaped rubber sealing ring V is matched, so that the impact resistance of the valve core is enhanced, the inertial impact generated when the train speed is changed is avoided, and the valve core is prevented from deviating.

Description

technical field [0001] The invention relates to the technical field of pneumatic valves, in particular to a plate-type pneumatic valve for rail transit with strong environmental adaptability. Background technique [0002] Pneumatic hose valve is referred to as pneumatic valve, also known as hoop valve, flexible valve, air drum valve, pneumatic pipe pinch valve. The fluid cut-off is specifically a plate-type air pressure valve for rail transit with strong environmental adaptability. [0003] Most of the existing pneumatic valves are bulky and heavy, rough in appearance, and have a high failure rate, and the existing small valves in the market are basically pipe-type connections. When they are installed and used, they take up a lot of space and are installed in the air, which is prone to vibration. , The noise is large, which is easy to cause loose air leakage at the connection, and the climate and ambient temperature around the world vary greatly, the temperature difference ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a rail transit plate-type pneumatic valve with strong environmental adaptability, so as to solve most of the existing pneumatic valves proposed in the above-mentioned background technology, which are bulky, rough in appearance, high in failure rate, and existing in the market. The small valves are basically pipe-type connections. When they are installed and used, they take up a lot of space and are installed in the air. They are prone to vibration, loud noise, and easy to cause looseness and air leakage at the connection. Moreover, the temperature of the climate and environment varies greatly around the world.- In the temperature range of 40°C to 70°C, most pneumatic valves have poor resistance to high and low temperatures, resulting in failure of the pneumatic valve and causing certain safety hazards.

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