High-speed rail pressure retaining blow-down valve
A sewage valve, high-speed rail technology, applied in the direction of diaphragm valve, safety valve, balance valve, etc., can solve the problem of duckbill valve price and high technology, and achieve the effect of simple structure, stable performance and low cost
Inactive Publication Date: 2015-01-07
李旭平
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Problems solved by technology
[0004] The purpose of the present invention is to provide a high-speed rail pressure maintenance and sewage valve, which can solve the problems of high-speed rail pressure maintenance and noise isolation at the same time, so as to overcome the high price and technical deficiencies of the imported duckbill valve
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[0025] Such as Figure 1-7 As shown, the present invention is made up of valve body 1, rubber formwork 2, valve cover 3; The space formed between valve body 1 and rubber formwork 2 communicates with sewage source via the water inlet on valve body 1, and the top of rubber formwork 2 is connected with The atmosphere in the compartment is connected; as the sewage water level increases, the pressure generated in the valve body 1 and under the rubber formwork 2 continues to increase, pushing the deformation area 22 of the rubber formwork 2 to deform, and the valve plug area 23 at the center of the rubber formwork 2 is lifted upwards. Open the valve port, and the sewage is discharged from the water outlet; when the sewage water level drops to a certain value, the valve plug area 23 at the center of the rubber formwork 2 drops close to the valve port 13, and at this time, the valve port is sealed under the negative pressure of the water outlet 12; It is worth noting that at this time...
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A high-speed rail pressure retaining blow-down valve is characterized by comprising a valve body and a rubber form mounted on the upper portion of the valve body. A hemispherical valve plug area projecting downwards at the center of the rubber form is matched with a valve port, a certain pre-compression force is kept, an upward bulging valve cover is mounted on the upper portion of the rubber form, the valve body, the rubber form and the edge of the valve cover are sealed in a fastened manner, a vent hole is formed in the side face of the valve cover and communicated with the air, sewage inflows from a water inlet in the side face of the valve body to push the rubber form to deform upwards, so that the valve port is opened, the sewage flows to a water outlet, the pressure in the valve body is reduced when the sewage is drained, and the form recovers an original shape and plugs the valve port. By the aid of the pressure intensity reflecting the depth of the sewage, the rubber form is pushed to deform, so that the valve port is opened, high-speed rail pressure retaining blow-down is achieved, the drift diameters of a water inlet pipeline and a water outlet pipeline are not limited by the structure of the valve, different blow-down requirements can be met, the size of the valve body does not need to be too large, and the high-speed rail pressure retaining blow-down valve is simple in structure, stable in performance, high in adaptability, low in cost and ideal.
Description
technical field [0001] The invention relates to a pressure-maintaining sewage valve for a high-speed railway, in particular to a pressure-maintaining sewage valve for a high-speed railway that discharges sewage produced by hand washing and cleaning inside the vehicle to the outside of the vehicle without losing the pressure inside the vehicle. Background technique [0002] The use of high-speed rail has brought great convenience to people's travel, but there are still many technical problems that need to be solved urgently; it can be known from the common sense of fluid mechanics that flow velocity is inversely proportional to pressure; The pressure is about 500mm lower than the water column; if the sewage pipeline of the high-speed rail vehicle is directly connected to the outside of the train, the passengers will continue to withstand the process of decompression and pressurization during the acceleration and deceleration of the train, which will affect the passenger's hear...
Claims
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IPC IPC(8): F16K7/12
CPCF16K7/12F16K17/164
Inventor 何明旭何宇彤徐晓荷李旭平何西荣
Owner 李旭平