Vacuum toilet dejecta collector gate valve

Abstract

The invention discloses a vacuum toilet dejecta collector gate valve which comprises an upper clamping plate, a lower clamping plate, a gate, an air cylinder, a driven gear and a driving gear. The upper clamping plate and the lower clamping plate are mutually buckled, the gate is located between the upper clamping plate and the lower clamping plate, and the driven gear and the driving gear are installed at the two ends of a gear shaft correspondingly. The gate comprises an opening area, a blocking and a driving area which are distributed in the shape like the Chinese character 'pin'. Annular grooves are formed in the peripheries of dejecta through holes of the upper clamping plate and the lower clamping plate, hollow sealing rings are embedded in the annular grooves, the front portion of apiston rod of the air cylinder is provided with a rack to be engaged with driving teeth, the rack is driven by the air cylinder, the gate valve is opened when the dejecta through holes of the upper and lower clamping plates coincide with a through hole in the gate, and the gate valve is closed when the dejecta through holes in the upper and lower clamping plates coincide with the blocking area onthe gate. A self-adaptive O-shaped ring is designed, and positive pressure of the O-shaped ring to the gate is changed along with changes of pressure of a pressure cavity within a certain range. Thestructure is reasonable, performance is reliable, therefore, the maintenance workload of a high speed rail dejecta collection system can be reduced, and the application cost is reduced.

Description

technical field [0001] The invention relates to a gate valve for a vacuum toilet collection device, which is used to control the switch of the sewage discharge channel of the vacuum toilet collection system on equipment such as aircraft, high-speed rail, and road passenger vehicles, and belongs to the technical field of toilet collection systems for passenger vehicles. Background technique [0002] The valves required for the dirt passage of the vacuum defecation collection system are different from the general valves of the general defecation collection system, and have higher requirements for the reliability and durability of the valves. Taking the high-speed rail as an example, once there is a problem with the toilet collection system of the high-speed rail, the toilet must be shut down immediately, which will not only affect the use of passengers, but also cause serious damage to the riding environment, and the valve plays an extremely important role in the system; Altho...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of air leakage and high failure rate of the butterfly valve and slide valve on the channel from the urinal to the dirt tank, the present invention proposes a new scheme of reconsidering the transmission mechanism of the gate valve and changing the structure of the seal to improve the imported butterfly valve And slide valve failure rate is high, poor sealing performance and large operating resistance; the valve structure is simple, in line with the general laws of mechanical design, designed a hollow sealing ring and put forward the concept of sealing pressure self-adaptation; this is very important for stable gate valve performance , It is of great significance to reduce the failure rate and reduce the cost

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