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Overflowing valve with automatic resetting and zero leakage functions

An automatic reset, zero-leakage technology, applied in functional valve types, lift valves, valve details, etc., can solve problems such as environmental pollution, long valve reset time, waste, etc., and achieve the effect of increasing the adjustment range

Active Publication Date: 2014-01-15
BEIJING AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small holes on the valve disc, such valves still have a large amount of medium flowing out from the valve disc after they are closed, causing waste and possibly causing environmental pollution.
In addition, if the distance between the overflow valve and the downstream valve is relatively long or the seal of the downstream valve is not very good, the reset time of the valve will be very long or even unable to reset

Method used

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  • Overflowing valve with automatic resetting and zero leakage functions
  • Overflowing valve with automatic resetting and zero leakage functions
  • Overflowing valve with automatic resetting and zero leakage functions

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, a through hole is processed in the center of the valve body 1, and the lower end of the through hole is stepped. A valve flap 2 is installed in the through hole, the bottom of the valve flap 2 is a disc, and the top of the disc is rod-shaped. A guide sleeve 4 is sheathed on the rod-shaped outer cover. The center of the guide sleeve 4 is processed with a protruding circular platform structure, and the center is processed with a mounting hole, through which the guide sleeve 4 is set outside the rod-shaped part of the valve disc 2, and a lock is installed on the guide sleeve 4. The tight collar 5 and the locking collar 5 are threadedly connected with the valve body 1, and the guide sleeve 4 is locked by the locking collar 5. The guide sleeve 4 is threadedly connected with the valve body 1 .

[0024] ...

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Abstract

The invention relates to the pipeline flow protection technology and particularly discloses an overflowing valve with the automatic resetting and zero leakage functions. The overflowing valve comprises a valve body, a valve clack, an adjusting washer, a guide sleeve, a locking ferrule, a spring, an upper spring base, a locking nut, a stop valve and a bypass pipeline. The adjusting washer is arranged between the guide sleeve and the valve body, a step structure is arranged at the top end of the guide sleeve and can fix the bottom of the spring, the valve clack passes through the guide sleeve, and the upper spring base is connected with the rod part of the valve clack. Through a special bypass resetting adjusting structure and a special conical sealing structure, high sealing performance of the overflowing valve is guaranteed after the overflowing valve is closed, and resetting reliability and control over resetting time points can be achieved. Due to the fact that the mode that a flow dual-adjusting structure is closed is adopted, the adjusting range of closing flow is widened and the accuracy of the closing flow is improved.

Description

technical field [0001] The invention belongs to flow protection technology, in particular to a quick cut-off valve. Background technique [0002] The overflow valve is a flow protection device. Under normal working conditions, when the flow in the pipeline passes through the specified range, the valve is opened and the medium can pass through the overflow valve. When the pipeline or auxiliary equipment breaks, or the packing falls off, the medium flow in the pipeline will increase rapidly. After exceeding the specified value, the valve will automatically close to prevent the medium in the storage tank from losing a large amount. [0003] There are two types of common overflow valves. One structure is without bypass. After the valve is closed due to excessive flow, the overflow valve must be removed to reset the disc of the overflow valve. The other structure is with a discharge hole on the disc. After the faulty equipment is repaired and the downstream valve is closed, the ...

Claims

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Application Information

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IPC IPC(8): F16K17/30F16K17/36F16K27/02
CPCF16K1/38F16K17/30F16K27/0254F16K27/0272
Inventor 赵益春马静伍帅李晓峰
Owner BEIJING AEROSPACE PROPULSION INST
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