Electromagnetic pressure protection water discharge valve

Abstract

The invention discloses an electromagnetic pressure protection water discharge valve used for high-speed multiple units. The valve is connected between a water discharge inlet and a water discharge outlet, and comprises a valve body and a valve, wherein a water discharge passage is formed in the valve body; the valve is movably arranged in the water discharge passage; the valve body is provided with an electromagnetic valve; and the valve is arranged on the electromagnetic valve and is opened and closed through the action of an armature of the electromagnetic valve. Due to the adoption of the electromagnetic valve, the water discharge valve is opened and closed through the action of the electromagnetic valve, so that water is not required to be discharged by squeezing by using the gravity of the water to prevent the phenomenon of water logging due to incapable discharge of a small amount of water when the water is available, and the valve is not required to be sealed through air pressure to overcome the defect of difficulty in sealing of the valve in the presence of insufficient air pressure when the water is not available, and the valve is not influenced by vibration produced during running of a train to prevent water leakage and air leakage phenomena caused by the vibration; and the valve fills the blank in the technology of the pressure protection water discharge valve of a domestic high speed train of China and has great practical value for the domestication of the China high-speed multiple units.

Description

technical field [0001] The invention relates to the field of pressure protection drain valves for high-speed EMUs, and more specifically, the improvement relates to electromagnetic pressure protection drain valves for high-speed EMUs. Background technique [0002] Nowadays, high-speed EMUs, that is, high-speed trains, have entered an era of rapid development. The mechanical pressure protection drain valves used in the sewage discharge facilities on China’s high-speed train carriages are all imported; the mechanical pressure protection drain valves use the gravity of water to squeeze the sewage out; when there is no water, they are The valve is sealed by air pressure. [0003] However, due to the vastness of the north and south of China and the large climate difference, after a period of use, the mechanical pressure protection drain valve has poor environmental adaptability and is not suitable for installation outside the compartment; too many connection points and curvature...

AI Technical Summary

Problems solved by technology

[0003] However, due to the vastness of the north and south of China and the large climate difference, after a period of use, the mechanical pressure protection drain valve has poor environmental adaptability and is not suitable for installation outside the compartment; too many connection points and curvature are difficult to fix, not only The volume is large, the drainage diameter is small, the flow rate is not enough, the ability to resist foreign objects is poor, and it is easy to block. Moreover, the rubber tube connected at the connection point is also poor in adaptability to the vibration of the train, and it is prone to water and air leakage; Floor drains cannot be installed, which can easily lead to water accumulation inside the compartment

[0004] Therefore, the existing technology still needs to be improved and developed

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