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Self-closing non-return emergency valve for deck water draining

An emergency valve and non-return technology, which is applied in the direction of lifting valve, valve details, valve device, etc., can solve the problems of easy deformation or strain of the rubber ring, drainage can not meet the requirements, and high requirements of the drainage system, so as to achieve short service life and tight sealing Stable performance and strong corrosion resistance

Pending Publication Date: 2018-02-02
DALIAN XIANGRUI VALVE MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the material of the valve body is ZG230~450 which is not resistant to seawater corrosion. The sealing valve seat and the valve body are threaded and easily loosened to cause leakage. Strain, and in the ammunition compartment, in order to prevent the ammunition in the ammunition compartment from getting wet, the requirements for the drainage system are very high, and manually opening the valve for drainage can no longer meet the requirements

Method used

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  • Self-closing non-return emergency valve for deck water draining
  • Self-closing non-return emergency valve for deck water draining
  • Self-closing non-return emergency valve for deck water draining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Manually operate the valve to drain water, turn the hand wheel counterclockwise, the valve stem goes down through the stem nut, and pushes the floating valve disc on the conical surface to move down, at this time the passage is opened for drainage. Turn the handwheel clockwise, the valve stem goes up through the valve stem nut, and the floating valve disc on the conical surface is pulled to move up. At this time, the valve passage is closed, and the water or air in the pipeline at the lower part of the valve body cannot overflow.

Embodiment 2

[0018] The invention can also automatically drain water, rotate the handwheel, and let the stroke indicator point to the opening and closing scales of the indicating column. When the water depth in the sump well is 120mm~150mm, the water gravity acting on the valve clack overcomes the force of the supporting spring. With partial force, the disc opens slightly downwards to automatically drain water. When the instantaneous water depth reaches 300mm, the water gravity acting on the disc completely overcomes the full force of the supporting spring, and the disc is fully opened downward to drain water quickly. After the water is drained, the valve clack resets under the action of spring resilience and coincides with the rubber sealing ring pad to achieve the effect of automatic drainage.

[0019] In the present invention, the valve stem 2 is connected with the extension rod 11 provided in the middle of the valve stem through a universal joint. With the connection structure of the u...

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PUM

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Abstract

The invention discloses a self-closing non-return emergency valve for deck water draining. The valve comprises a valve body, a valve rod, a valve clack, a valve cover and a hand wheel; a control levelis arranged at the lower end of the hand wheel, and a stroke indicator and a positioning ring for limiting the valve to open within a maximum stroke are arranged on the control level; the lower end of the control lever is connected with the valve rod, a lengthened rod is arranged in the middle of the valve rod, and valve rod nuts are arranged at the two ends of the valve rod; the valve rod nuts are connected with a fixing frame, a stroke indicating column is fixed on the fixing frame, and an opening and closing scale is marked on the stroke indicating column; the lower end of the valve rod isconnected with the valve clack, the valve clack adopts a lower open type conical surface floating valve clack, and a spring is arranged at the lower part of the valve clack; the stroke indicator is pointed to the middle position of the stroke indicating column so that automatic water draining function can be realized; and a grating is arranged above a drainage well, the grating is fixed on a deckthrough a welding seat plate, and the grating can prevent impurities from blocking a drainage channel. According to the emergency valve, automatic water draining can be carried out in a ship cabin without people patrolling, the safety performance can be enhanced, the sealing performance can be stable, the corrosion resistance can be high, and the service life can be long.

Description

technical field [0001] The invention relates to the field of valves, in particular to a drain valve. Background technique [0002] The original PM10050~250VT167-00 deck level relief valve is a device used for emergency drainage on the deck of a ship. The valve passage is opened and closed by operating the handwheel to perform drainage work. But the material of the valve body is ZG230~450 which is not resistant to seawater corrosion. The sealing valve seat and the valve body are threaded and easily loosened to cause leakage. Injury, and in the ammunition compartment, in order to prevent the ammunition in the ammunition compartment from getting wet, the requirements for the drainage system are very high, and manually opening the valve for drainage can no longer meet the requirements. Contents of the invention [0003] In order to solve the above problems, the present invention provides a self-closing non-return deck drainage emergency valve, which has a valve body, a valve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/00F16K37/00F16K27/02F16K1/38F16K25/04
CPCF16K1/00F16K1/38F16K25/04F16K27/0254F16K37/0016
Inventor 王会民姜国祥
Owner DALIAN XIANGRUI VALVE MFR
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