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A compensating sealed butterfly valve

A compensation type, butterfly valve technology, applied in the field of valve sealing, can solve the problems of high maintenance cost, low valve service life, damage to the sealing surface, etc., to achieve the effect of extending the overall life, reducing the cost of products, and reducing the cost of accessories

Active Publication Date: 2022-05-03
BENSV VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose a compensation sealing butterfly valve to solve the problems of damage to the sealing surface caused by forced sealing, low service life of the valve and high maintenance cost

Method used

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  • A compensating sealed butterfly valve
  • A compensating sealed butterfly valve
  • A compensating sealed butterfly valve

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Embodiment Construction

[0022] It should be noted that, without conflict, embodiments of the present invention and features in the embodiments may be combined with each other.

[0023] In the description of the present invention, it is emphasized that the terms "center", "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and other indications of the orientation or position relationship is based on the orientation or position relationship shown in the drawings, only to facilitate the description of the present invention and simplify the description, and not to indicate or imply that the referred device or element must have a specific orientation, structured and operated in a particular orientation, It can therefore not be construed as a limitation of the present invention. Further, the terms "first", "second", etc. are for descriptive purposes only and cannot be construed as indicating or implying relative importance...

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Abstract

The present invention provides a butterfly valve with compensating seal. A compensating seal is installed inside the valve body. The two ends of the diaphragm seal are respectively fixed and installed inside the valve body. The inner ring of the type seal is connected to the outer edge of the valve plate, and one end of the power source passes through the side wall of the valve body and is connected to the control chamber. A compensated sealing butterfly valve described in the present invention changes the opening and closing characteristics of the traditional on-off valve, and divides the opening and closing of the valve and the sealing into two actions. Diaphragm seal is extruded and deformed, which reduces the operating torque of the valve and avoids damage to the sealing surface caused by the additional sealing torque when operating the valve. When the actuator is used for automatic opening and closing, the selection specification of the actuator is reduced. Reduce the cost of accessories, and the diaphragm seal will not be excessively deformed for a long time, the life of the sealing surface is greatly extended, the overall life of the valve is extended, and the maintenance cost in the later period is reduced.

Description

Technical field [0001] The present invention belongs to the field of valve sealing, in particular to a butterfly valve compensatory seal. Background [0002] The existing butterfly valve is widely used in various types of pipeline systems, and users generally have the following pain point problems: 1, the use of the initial seal is good, but after a period of time, the seal is easy to damage, and it is difficult to maintain after damage; 2, with the larger the valve caliber, the more difficult the operation, the operation torque is very large. Its problems are mainly because of the following aspects: 1, the existing butterfly valve generally uses forced sealing, through the external force to squeeze the sealing surface to achieve sealing, this way of sealing surface damage is very large; 2, the sealing surface is high precision, easy to receive the influence of media debris, the formation of local damage; 3, soft seal rubber long-term external force extrusion, rubber elasticity ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/228F16K27/02
CPCF16K1/2285F16K1/2263F16K27/0218
Inventor 何锐王学攀王东辉王天彪吴波
Owner BENSV VALVE CO LTD
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