Internal exhaust type two-position five-way solenoid valve

Abstract

The invention discloses an internal exhaust type two-position five-way solenoid valve. The internal exhaust type two-position five-way solenoid valve comprises a valve body, a back cover, a valve seat, a valve rod, a back piston and a front piston, wherein a first exhaust port, a first gas outlet, a gas inlet, a second gas outlet and a second exhaust port are formed in the wall of the valve body; a first cavity is formed between the front end of the back piston and the valve body; a second cavity is formed between the back end of the front piston and the valve body; a first Y-shaped ring in sealing fit with the inner wall of the valve body is embedded in the back end of the valve rod and located between the first cavity and the first exhaust port, and a V-shaped opening of the first Y-shaped ring faces the front piston; a second Y-shaped ring in sealing fit with the inner wall of the valve body is embedded in the front end of the valve rod and located between the second cavity and the second exhaust port, and a V-shaped opening of the second Y-shaped ring faces the back piston. The internal exhaust type two-position five-way solenoid valve is simple and reasonable in structure, high in sensitivity, stable in working performance and long in service life and cannot cause jamming of the valve rod easily during usage.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an internal row type two-position five-way solenoid valve. Background technique [0002] Valve products are widely used in fluid control in various technical fields, and two-position five-way solenoid valve is one of them, which is well known by people. The structure of the common two-position five-way solenoid valve currently on the market usually includes a valve body, a back cover and a valve seat respectively arranged at both ends of the valve body. The first exhaust port, the first air outlet, the air inlet, the second air outlet and the second exhaust port communicated with the valve cavity are arranged at equal intervals from the back to the front of the wall, and several flat valve rods are provided on the valve stem. The valve body is provided with a number of nodes corresponding to the flat ring, and several nodes are interlaced with the first exhaust port, the first ai...

AI Technical Summary

Problems solved by technology

However, the defect of this external discharge structure with a balance hole is that when the two-position five-way solenoid valve is used in a place with a high dust concentration (such as a woodworking workshop), the dust in the working environment can easily enter the valve through the balance hole. internal, resulting in the stem being stuck, affecting the normal use of the valve

However, since the existing two-position five-way solenoid valve adopts an external discharge structure, the throttling device cannot directly affect the pressure change in the chamber when it is working, resulting in poor throttling and speed regulation effects.

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