An electronically controlled reversing valve

Abstract

The invention discloses an electric control reversing valve, which comprises a valve body, front and rear covers at both ends of the valve body, a sliding valve rod is arranged in the valve body, a large piston and a small piston are respectively arranged at the two ends of the sliding valve rod, and the front and rear covers are There are large and small piston chambers corresponding to the large and small pistons, and a gland and a coil assembly are arranged in turn at the front cover end. The coil assembly is provided with a sleeve assembly that opens and closes the air path and moves the piston. The sliding valve A hollow groove is arranged in the rod, and the two ends of the hollow groove communicate with the large and small piston chambers respectively. The reversing valve has the characteristics of long life, good stability, miniaturization, low power consumption and the like.

Description

technical field [0001] The invention belongs to the technical field of pneumatics, and in particular relates to an electric control reversing valve. Background technique [0002] The existing electronically controlled reversing valves in Ningbo and Wenzhou, Zhejiang, my country are mainly imitated by some foreign manufacturers' low-end products in the 1990s, but their suction and exhaust holes are directly connected to the outside world, that is, the sliding rod is solid, and the piston movement At the same time, the body of its suction and discharge directly leads to the outside world, and the outside dust is easily sucked into the piston chamber, causing the piston chamber to be blocked and the reversing valve to fail. Contents of the invention [0003] In view of the above-mentioned technical defects, the technical problem to be solved by the present invention is to provide an electronically controlled reversing valve with internal breathing and long service life. [00...

AI Technical Summary

Problems solved by technology

[0002] The existing electronically controlled reversing valves in Ningbo and Wenzhou, Zhejiang Province of my country are mainly imitating the low-end products of some foreign manufacturers in the 1990s, but their suction and exhaust holes are directly connected to the outside world, that is, their sliding rods are solid, and their pistons move When it is used, the body of its suction and discharge directly leads to the outside world, and the outside dust is easily sucked into the piston chamber, resulting in the blockage of the piston chamber and the failure of the reversing valve.

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