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Large-caliber reversing valve

A reversing valve, large-diameter technology, applied in valve details, multi-port valves, valve devices, etc., can solve problems such as inability to apply fluid media, and achieve good fluid control characteristics, large effective flow area, and small fluid resistance.

Inactive Publication Date: 2011-03-30
TIANJIN BAILIZHANFA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above-mentioned patent is a gas pipeline reversing valve, which cannot be applied to fluid media, so it is quite different from the present invention

Method used

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Embodiment Construction

[0017] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings; it should be noted that: this embodiment is descriptive, not restrictive, and cannot be used to limit the protection scope of the present invention.

[0018] A large-diameter reversing valve is composed of a valve body 6, a butterfly plate 7, a valve stem 5, a driving device 1 and other components. The reversing valve belongs to a three-way valve, and a fluid medium inlet 10, Two mirror-symmetrical outlets 8 and 9 are mirror-symmetrically installed on the valve body of each outlet with a butterfly plate, valve body bracket 3, valve stem and driving device, wherein each valve stem is fixed on the valve body through a lock pin 11. A packing 4 is installed between the valve stem and the valve body on each butterfly plate; the driving device can be manually driven by a manual runner 2 as shown in this embodiment, or can be automatically driven by a motor or...

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Abstract

The invention relates to a large-caliber reversing valve which comprises a valve body, butterfly plates, valve stems and drive units, wherein the valve body is provided with a fluid medium inlet and two mirror-symmetrical outlets; each outlet of the valve body is provided with one butterfly plate, one valve body bracket, one valve stem and one drive unit in a mirror-symmetrical mode; and each valve stem is fixed on the corresponding butterfly plate. Since the butterfly plate of the reversing valve is an opening-closing part, the fluid resistance is smaller; since the medium-large-caliber butterfly valve has large effective flow area in a completely open state, the opening and closing of the valve are quick and labor-saving; and meanwhile, the valve has favorable fluid control characteristic and strong functions, and can realize the functions of interception, reversing and diversion.

Description

technical field [0001] The invention belongs to valves, in particular to a large-diameter reversing valve. Background technique [0002] In the past, the use of three-way valves in large-diameter pipelines was limited. Even if they were used, they were used by connecting two butterfly valves, which had the characteristics of large space occupation, easy leakage, and high cost. At present, there is no product of large-diameter reversing valve in the market. [0003] By searching, a published patent document was found: a large-diameter gas pipeline reversing valve (CN2846914), including a reciprocating cylinder, the piston rod of the reciprocating cylinder protrudes from one end of the cylinder body, and it is characterized in that when the piston rod extends A valve body with a valve port A is provided at the exit position, a valve for closing the valve port A is provided at the protruding end of the piston rod, and a bypass opening is provided on the side of the valve body....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/20F16K41/02F16K31/60F16K31/04
Inventor 张博竞杨学志代占伟杨林
Owner TIANJIN BAILIZHANFA GRP
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