Multi-needle valve terminal

Abstract

The invention belongs to the technical field of valve terminals, and particularly relates to a multi-needle valve terminal. The multi-needle valve terminal comprises a confluence plate used for distributing an air source and a circuit board shell fixedly installed at one side of the confluence plate, a plurality of electromagnetic valves distributed side by side are installed at the top of the confluence plate, an air inlet hole and a working hole are formed at the end of the confluence plate, and the air inlet hole is in sealed connection with an external air source. A silencer is fixedly mounted on the working hole, and a base plate is arranged between the electromagnetic valve and the confluence plate; and by arranging a mechanism capable of filtering and separating between the electromagnetic valve and the confluence plate, particle impurities in inlet air flow can be blocked in the filtering state, the situation that the sealing performance of the electromagnetic valve becomes poor due to the fact that particles enter the electromagnetic valve is avoided, in the blocking state, a through hole is completely blocked by a filtering and blocking plate, therefore, air pressure directly acts on the filtering and blocking plate and cannot continuously act on the electromagnetic valve, the fatigue degree of an elastic element in the electromagnetic valve is reduced, and the service life of the electromagnetic valve is prolonged.

Description

technical field [0001] The invention belongs to the technical field of valve islands, in particular to multi-needle valve islands. Background technique [0002] The valve island is a new generation of gas-electric integrated control components. It has developed from the valve island with multi-pin interface to the valve island with field bus, and then the programmable valve island and modular valve island. The combination of valve island technology and fieldbus technology not only ensures the easy wiring of electric control valves, but also greatly simplifies the debugging, performance detection, diagnosis and maintenance of complex systems. With the help of the high-level integrated information system of fieldbus , so that the advantages of both can be brought into full play, and have broad application prospects. [0003] The solenoid valve and the manifold on the existing valve island are directly installed, and the inlet hole of the solenoid valve is directly connected t...

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Problems solved by technology

[0003] The solenoid valve and the manifold on the existing valve island are directly installed, and the inlet hole of the solenoid valve is directly connected to the outlet hole of the manifold, but the input gas will contain impurities, and the impurities will enter the solenoid valve, which will affect the solenoid valve. The tightness of the solenoid valve, and the solenoid valve is in a normally closed state when it is not conducting, and it is always connected to the air source. The solenoid valve will always be under pressure. If the pressure is too high for a long time, the pressure on the seal is too large, the spring cannot be pressed or the seal The deformation of the parts can cause the solenoid valve to leak

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