Passenger car water filling nozzle sealing dustproof device

Abstract

The invention discloses a passenger car water filling nozzle sealing dustproof device which ensures that a water injection pipe is not frozen and is not polluted by dust, and is clean and sanitary. Hoops are arranged so that later installation of a cover plate is facilitated, disassembly is also facilitated, anti-skid gaskets and protruding strips are arranged on inner walls of a first arc-shapedconnecting plate and a second arc-shaped connecting plate, the anti-skid performance of the hoops is improved, and stability is improved; a hinge reset mechanism facilitates opening and closing of thecover plate and is used for applying an elastic force in an opening and closing direction to the cover plate; limiting plates on connecting flanges on the two sides limit an overturning angle of thecover plate, and a situation that the hinge reset mechanism fails due to excessive deformation caused by excessive overturning of a torsional spring is prevented; a locking block I on the inner wall of a deflector rod is attracted with a locking block II when the cover plate is closed so that the cover plate is prevented from being accidentally and easily opened; and the opening and closing of thebottom of the cover plate and a sealing sheet provided with a cross-shaped water outlet facilitate discharge of internal water vapor, internal and external air pressure is balanced when the internalair pressure is too high, and the cover plate is prevented from being ejected open by the internal high air pressure.

Description

technical field [0001] The invention relates to the technical field of drainage sealing, in particular to a sealing and dustproof device for water injection ports of passenger cars. Background technique [0002] In order to ensure the supply of water source on the train, the passenger car is usually equipped with a water injection port, so as to quickly replenish the water source for the passenger car within a short period of time at the stop. The railway passenger car operates in a wide area, and the climate, temperature, and air flow fluctuate greatly. The point of operation is smooth, the water nozzle does not freeze, and is not polluted by dust, which ensures that the water nozzle is clean and hygienic. Therefore, a dust cover and a cover structure that is convenient to open and lock are generally designed at the water filling point. However, the existing dust cover There is no reset mechanism for the cover and the cover, which often forgets to close the dust cover and t...

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Problems solved by technology

[0002] In order to ensure the supply of water source on the train, the passenger car is usually equipped with a water injection port, so as to quickly replenish the water source for the passenger car within a short period of time at the stop. The railway passenger car operates in a wide area, and the climate, temperature, and air flow fluctuate greatly. The point of operation is smooth, the water nozzle does not freeze, and is not polluted by dust, which ensures that the water nozzle is clean and hygienic. Therefore, a dust cover and a cover structure that is convenient to open and lock are generally designed at the water filling point. However, the existing dust cover There is no reset mechanism for the cover and the cover, which often forgets to close the dust cover and the cover. In addition, the dust cover and the cover seal the water injection port. Sometimes the internal air pressure is higher than the external air pressure, and the dust cover and the cover Top open, there is a safety hazard

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