A plug valve with split plug structure

Abstract

The invention discloses a plug valve with a split plug structure, which comprises a valve body and a plug disposed in the valve body, the plug includes an upper plug and a lower plug; the upper plug is connected with the channel of the valve body The end face of the contact is provided with a rotary plate slot, and the rotary plate slot is distributed along the diameter of the end face of the upper plug core; The straight plate is inserted into the slot of the rotary plate. Replace the traditional integral valve core with a split structure, and realize the opening and closing of the valve body through the screw-on straight plate on the lower plug core. When the plug valve fails due to severe wear and tear due to long-term use, it is not necessary to replace the entire plug valve , only need to replace the straight plate through the end cap at the bottom of the valve body, and it can be used as a new plug valve, which greatly prolongs the service life of the plug valve, improves the performance of the plug valve, and reduces production and maintenance costs.

Description

technical field [0001] The invention relates to a valve, in particular to a plug valve with a split plug core structure. Background technique [0002] The plug valve is a closing member or a plunger-shaped rotary valve. By rotating 90 degrees, the channel port on the valve plug communicates with or separates from the channel port on the valve body to realize opening or closing. The shape of its valve plug Can be cylindrical or conical. The plug valve is a fast-switching straight-through valve, which uses a plug body with a through hole in the middle as a valve for opening and closing. The plug body rotates with the valve stem to realize the opening and closing action. [0003] The plug valve is mainly sealed by the direct contact between the finished metal plug body and the inner cavity of the valve, which is very easy to wear. When the plug body is worn out and cannot be effectively sealed with the traditional inner cavity, the entire plug valve will fail and cannot be use...

AI Technical Summary

Problems solved by technology

[0003] The plug valve is mainly sealed by the direct contact between the finished metal plug body and the inner cavity of the valve body, which is very easy to wear. When the plug body is worn out and cannot be effectively sealed with the traditional inner cavity, the entire plug valve will fail and cannot be used.

Shorten the service life of the plug valve and increase the cost of production and maintenance

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