Sealing structure of auto-control valve shell

Abstract

The invention relates to a sealing structure of an auto-control valve shell, comprising a locating ring, a coupling shaft sleeve, a locating pin, and a hoop. An external fastener is inserted into an internal cavity when the hoop is assembled. The assembled hoop is a full circle. If the hoop needs to be opened, the external fastener should be damaged in the position of a sealing groove, and then the hoop can be opened and an internal connection structure is exposed. A valve head component of the auto-control valve can be exchanged by pulling out the locating pin at the moment. The sealing structure of an auto-control valve shell provided by the invention is characterized by high connecting strength, simple assembly, convenient maintenance, and simple appearance.

Description

technical field [0001] The invention belongs to the technical field of electronic information, and in particular relates to a casing or a structural part of an electric device, in particular to a sealing structure of a casing of an automatic control valve. Background technique [0002] The automatic control valve is an automatic on-off control device applied in the fluid pipeline network. It uses electric motors, compressed air, electromagnetic force and other power drives to perform on-off operations on the fluid. widely used. [0003] The automatic control valve is usually composed of a self-control valve head and a valve body. The connection structure between the self-control valve head and the valve body is fastened. In order to facilitate on-site installation and maintenance, these connection structures are usually designed outside the self-control valve head or valve body. Therefore, there should be sealing measures on these connecting parts to prevent the automatic c...

AI Technical Summary

Problems solved by technology

[0004] The usual sealing measures include lead seal, heat shrinkable film seal, etc. Since these sealing measures do not have the ability to connect and fasten, the self-control valve must be connected and firmly connected separately, which increases the production and maintenance procedures.

There is also a cable tie-type sealing measure, which uses a reinforced cable tie to directly connect the self-control valve head and the valve body. It has a simple structure and is easy to operate. However, since the tightening direction of the cable tie is radial, The axial fastening strength is small, so that the self-control valve head is easy to fall due to external force

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