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Oil filling limiting stop valve

A cut-off valve and valve body technology, applied in safety valves, balance valves, valve devices, etc., can solve problems such as air pollution

Inactive Publication Date: 2015-11-11
孙达立
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing overflow valve does not have a large channel caliber. When refueling, the oil and gas directly pass through the refueling port to the atmosphere, causing greater pollution to the atmosphere.

Method used

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  • Oil filling limiting stop valve
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  • Oil filling limiting stop valve

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the embodiments of the drawings.

[0032] Such as Figure 1-Figure 11 As shown, a refueling limit cut-off valve includes a valve body 1 and an oil-air separator 2. The valve body 1 includes a valve guard 3, a valve inner housing 4, and a valve float 5, and the valve guard 3 is arranged on the valve inner housing 4, the valve float core 5 is located in the valve inner shell 4, a spring 7 is arranged between the bottom of the valve inner shell 4 and the valve float core 5, the valve inner shell 4 is connected with the oil-air separator 2, and the valve inner shell 4 is provided with a partition plate 8 on the upper part, and an oil gas emission hole 9 communicating with the oil and gas separator 2 is provided in the middle of the partition plate 8. The valve float core 5 includes a float core main part 10 and a sealing member 11 that can float up and down within a limited range. The sealing m...

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Abstract

The invention discloses an oil filling limiting stop valve which comprises a valve body and an oil-gas separator. The valve body comprises a valve shield, a valve inner shell and a valve float element. The valve shield is arranged outside the valve inner shell. The valve float element is located in the valve inner shell. A spring is arranged between the bottom of the valve inner shell and the valve float element. The valve inner shell is connected with the oil-gas separator. A partition plate is arranged at the upper portion of the valve inner shell. An oil-gas diffusing hole communicated with the oil-gas separator is formed in the middle of the partition plate. The valve float element comprises a float element main part and a sealing component which can float vertically in the limited range. The sealing component comprises an upper sealing ring and a lower sealing ring which are integrally arranged. A central channel is arranged in the middle of the upper sealing ring and the middle of the lower sealing ring. The oil filling limiting stop valve has the beneficial effects that when a vehicle bumps or overturns, fuel in a fuel tank can be prevented from overflowing outwards.

Description

Technical field [0001] The invention relates to a shut-off valve installed on a fuel tank of a vehicle, in particular to a shut-off valve with a fuel limit. Background technique [0002] An overflow shut-off valve is usually installed on the vehicle fuel tank, which has the following functions: 1) When the vehicle fuel tank is filled, the vehicle fuel tank and the atmosphere have a certain passage through the overflow shut-off valve; and when the vehicle fuel tank is filled with fuel, The overflow shut-off valve will automatically close to prevent fuel from overflowing from the overflow shut-off valve. 2) The last important thing is that when the position of the fuel tank changes suddenly (such as the vehicle overturns), the overflow shut-off valve will prevent fuel from flowing out. On September 14, 2011, the authorized and published patent number is 201120078737.7 and the name is "an overflow shut-off valve, which discloses that the upper end of the valve housing is provided w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/36
CPCF16K17/36
Inventor 孙达立
Owner 孙达立
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