A double-butterfly plate type connecting pipe regulating valve

CN122083149APending Publication Date: 2026-05-26SHENYANG VALVE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENYANG VALVE CO LTD
Filing Date
2026-04-27
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing triple eccentric butterfly valves require overcoming significant initial static friction and medium pressure when opening under high-pressure conditions, resulting in difficult opening.

Method used

A double-butterfly plate type connecting pipe regulating valve is designed. By setting a torsion member between the first and second butterfly plates, the torsional force stored when the second butterfly plate rotates is used to assist the opening of the first butterfly plate. Combined with the adjustment part, the torsional stiffness is increased under high pressure to reduce the opening torque.

Benefits of technology

This makes opening the butterfly valve under high pressure easier and improves operational efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a double-butterfly plate type connecting pipe regulating valve, relating to the field of valve technology. It includes a valve seat with an internally formed medium passage, a rotatable first butterfly plate within the medium passage, which opens or closes the medium passage when rotated. A through hole is formed through the first butterfly plate, and a rotatable second butterfly plate is disposed within the through hole, which opens or closes the through hole when rotated. The rotation axes of the first and second butterfly plates coincide on a preset axis, and a torsion member is provided between them. When it is necessary to open the medium passage, the second butterfly plate rotates first to gradually open the through hole, causing the torsion member to be torsiond and storing torsional force. Since the release direction of the torsional force is the same as the direction in which the first butterfly plate opens the medium passage, this torsional force assists the first butterfly plate in opening the medium passage when it rotates, making the opening of the regulating valve easier.
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