Low-temperature electric adjusting valve capable of adjusting pretightening force and adjusting method

An electric control valve and pre-tightening force adjustment technology, applied in the direction of lift valve, valve details, valve device, etc., can solve the problem that the sealing force of the valve seat and the valve core sealing surface cannot be detected, reduce the service life of the valve, and increase the wear of the valve core and other problems, to achieve the effect of reasonable preload adjustment, speed up the closing speed, and prevent the preload from being too large.

Pending Publication Date: 2018-04-20
HYGEA MEDICAL TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] At present, there are many kinds of regulating valves and many patents, but the existing various regulating valves mainly have the following problems: when the regulating valve is closed, the sealing force between the valve seat and the sealing surface of the valve core cannot be d

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  • Low-temperature electric adjusting valve capable of adjusting pretightening force and adjusting method
  • Low-temperature electric adjusting valve capable of adjusting pretightening force and adjusting method

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Embodiment Construction

[0037] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] In the description of the present invention, it should be noted that the terms "front", "rear", "upper" and "lower" are determined based on the specific usage habits of the low-flow liquid nitrogen cryogenic regulating valve, and are only for the convenience of describing the present invention. Inventions and simplified descriptions do not indicate or imply that a device or element must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.

[0039] The invention provides a...

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Abstract

The invention provides a low-temperature electric adjusting valve capable of adjusting pretightening force and an adjusting method. The low-temperature electric adjusting valve capable of adjusting the pretightening force comprises a valve body structure, a pretightening force adjusting structure and a driving mechanism; the valve body structure comprises a valve body, a valve base, a liquid inlet, a liquid outlet, a valve rod and a valve element; and the pretightening force adjusting structure comprises an elastic piece mounting base, an elastic piece, a push rod pressing block, a push rod, acover shell and a baffle plate. The low-temperature electric adjusting valve capable of adjusting the pretightening force has the following advantages: (1) in the valve closing process, the magnitudeof sealing force between the valve element and the valve base can be simply, quickly and accurately detected, so that the sealing force between the valve element and the valve base is controlled in aneeded range; the unadjustability of the pretightening force of the adjusting valve is changed to adjustability, so that the pretightening force for tight bonding of sealing surfaces of the valve base and the valve element is adjusted more reasonably, and excessive pretightening force and insufficient pretightening force are prevented; and under the precondition of meeting leakage requirements, the wear of the valve element is effectively reduced, and the service life of the valve is prolonged.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to a low-temperature electric control valve with adjustable pretightening force and an adjustment method. Background technique [0002] At present, there are many kinds of regulating valves and many patents, but the existing various regulating valves mainly have the following problems: when the regulating valve is closed, the sealing force between the valve seat and the sealing surface of the valve core cannot be detected, therefore, Often there is a problem that the sealing force is too large or too small. If the sealing force is too small, leakage will easily occur; if the sealing force is too large, it will effectively increase the wear of the valve core and reduce the service life of the valve. Therefore, how to simply and effectively control the sealing force between the valve core and the valve seat, effectively reduce the wear of the valve core and improve the serv...

Claims

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Application Information

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IPC IPC(8): F16K1/02F16K31/04F16K31/50F16K37/00F16K41/10
CPCF16K1/02F16K31/047F16K31/508F16K37/0041F16K41/10
Inventor 刘翠鹄程若凡肖剑黄立明黄乾富
Owner HYGEA MEDICAL TECH CO LTD
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