Anti-leakage structure of vacuum blow-down valve

Abstract

The invention relates to an anti-leakage structure of a vacuum blow-down valve. The anti-leakage structure comprises the vacuum blow-down valve, an upstream connecting assembly and a downstream connecting assembly, wherein the vacuum blow-down valve can allow sewage to flow and stop the sewage from flowing, and the upstream connecting assembly and the downstream connecting assembly are disposed onthe two sides of the vacuum blow-down valve correspondingly. The vacuum blow-down valve is provided with a sewage flowing end and a negative pressure flowing end along the sewage flowing direction. The upstream connecting assembly is connected with the sewage flowing end in a sealed mode and used for enabling sewage to flow into the vacuum blow-down valve. The downstream connecting assembly is connected with the negative pressure flowing end in a sealed mode and used for enabling sewage to be discharged through the switched-on vacuum blow-down valve, and a positioning mechanism for preventingthe vacuum blow-down valve from doing circumferential and axial movement is arranged at the joint of the downstream connecting assembly and the negative pressure flowing end. The anti-leakage structure is used for achieving external connection sealing and fixing of the vacuum blow-down valve applied to a vacuum closestool, is positioned in the circumferential direction and the axial direction ina reasonable and simple external connection mode, positioning is good, reliable sealing can be further guaranteed, the fault rate of the vacuum blow-down valve is reduced, and the use fault rate of the vacuum closestool is further reduced.

Description

technical field [0001] The present invention relates to the technical field of vacuum sewage collection, transportation and treatment, wherein the vacuum sewage collection technology refers to front-end devices or products that collect sewage at the source of sewage, including but not limited to various kitchens (such as toilets, urinals, shower rooms, etc.) , bathtubs, etc.) and sanitary products (such as vegetable sinks, dishwashers, etc.); vacuum sewage transportation technology refers to the related technologies that efficiently transport the sewage collected by front-end devices or products to sewage post-treatment equipment, including the core components There are vacuum pump stations, sewage collection tanks, underground (mainly arranged) vacuum conveying pipe network systems, vacuum wells, fault detection and diagnosis systems, etc.; vacuum sewage treatment technology refers to post-processing equipment or devices, the main function of which is to centrally collect Sew...

AI Technical Summary

Problems solved by technology

[0011] The object of the present invention is to provide an anti-leakage structure for a vacuum drain valve to solve the problems in the prior art that the connection mode of the vacuum drain valve is unreasonable, resulting in weak connection, poor sealing performance, and large use limitations.

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