Closestool flushing system, pressurizing device and pressure relief structure of pressurizing device

Abstract

The invention discloses a pressure relief structure of a pressurizing device, which comprises a pressure relief body and a movable part; the pressure relief body is provided with a pressure relief cavity, a pressure relief channel, an inlet channel and an outlet channel communicated with a pressurizing cavity of the pressurizing device, and the inlet channel, the outlet channel and the pressure relief channel are respectively communicated with the pressure relief cavity; the movable part is provided with a through-flow channel, fluid in the inlet channel flows to the outlet channel through the through-flow channel, and the through-flow sectional area of the through-flow channel is smaller than that of the inlet channel; after the pressure source inputs pressure fluid into the inlet channel, the movable part moves towards one side of the outlet channel to a second position under the action of the pressure difference between the two sides of the movable part so as to close the pressure relief channel; after the pressure source stops inputting the pressure fluid into the inlet channel, the movable part moves to the first position towards one side of the inlet channel under the action of reset force so as to open the pressure relief channel. The pressure relief structure is simple, reliable in function and low in cost. The invention further discloses a pressurizing device with the pressure relief structure and a closestool flushing system.

Description

technical field [0001] The invention relates to a pressure relief structure, a pressurizing device with the pressure relief structure, and a toilet flushing system with the pressurization device. Background technique [0002] Among the existing fluid pressurizing devices, the piston-type pressurizing device is a relatively common structure, which usually includes a housing and a piston, the housing has an inner cavity, and the piston can be reciprocally slidably arranged in the housing and the inner cavity of the housing Divided into a first chamber and a second chamber, the first chamber is in communication with the fluid source, the second chamber is in fluid communication with the outer part, and the fluid source provides pressure fluid to the first chamber to drive the piston to compress the second chamber under the action of the pressure fluid The fluid inside flows to the outer part. During the piston reset process, the fluid in the first chamber needs to be released ...

AI Technical Summary

Problems solved by technology

However, the structure of the electromagnetic valve is complicated and the cost is high.

In order to solve the problem of complex structure and high cost of electromagnetic valves, some pressure relief structures use Y-shaped sealing rings to realize the opening and closing of pressure relief channels. Y-shaped sealing rings are prone to failure, which can easily lead to poor sealing.

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