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Breathing valve, fuel tank cap and fuel tank

A technology of breathing valve and fuel tank cover, applied in the field of breathing valve, can solve the problems of polluted air and environment, polluted air, unsatisfactory results, etc., to prevent rupture and damage, and ensure the effect of normal oil supply

Active Publication Date: 2019-02-12
CHONGQING BAIKE DINGYU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the result is unsatisfactory, a large amount of volatile gas is directly discharged into the atmosphere to pollute the air
Especially when the engine is shaken, tilted, or even turned upside down, a large amount of oil and gas will overflow, which will seriously pollute the air and environment, affect people's health, and even cause safety hazards such as spontaneous combustion.

Method used

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  • Breathing valve, fuel tank cap and fuel tank
  • Breathing valve, fuel tank cap and fuel tank
  • Breathing valve, fuel tank cap and fuel tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as Figure 1 to Figure 5 As shown, a breathing valve for a fuel tank cap includes a valve body 1 made of elastic material. Starting from 4, the elastic material mentioned here generally refers to rubber material.

[0046] A protruding part 5 for air intake is arranged on one side of the valve body 1, and one side here refers to the side facing the fuel tank after the breather valve is assembled.

[0047] The protruding part 5 is wedge-shaped, and the protruding part 5 is integrated with the valve body 1 . The protruding part 5 has a cavity 6, and the valve body 1 is provided with a through hole that runs through both ends of the valve body, and the through hole communicates the cavity 6 with the outside atmosphere; When the pressure on one side of the protruding part 5 is lower than the pressure on the other side of the valve body 1, the slit will open; otherwise, the side wall of the wedge-shaped slit 2 can be squeezed and deformed and bonded under the action of...

Embodiment 2

[0051] Such as Figure 6 to Figure 8 As shown, the structure and principle of the breathing valve of Embodiment 1 are the same, the difference lies in the position of the assembly protrusion 4 . In actual use, the position of the assembly protrusion 4 can be flexibly arranged and set according to requirements.

[0052]The fuel tank cap installed with the above-mentioned breather valve can ensure the airtightness of the fuel tank when it is installed on the fuel tank for use, and when the internal and external air pressure of the fuel tank is balanced, the gas volatilized by the fuel in the fuel tank will not be discharged into the atmosphere to pollute the air. When the engine vibrates greatly or works on bumpy road conditions, when the fuel tank is tilted or even inverted, the notch 2 and the slit 3 are all closed to prevent oil leakage. Even if the fuel tank is tilted or turned upside down for a long time, the air pressure in the fuel tank will increase and the cutting seam...

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Abstract

The invention relates to a breather valve, a fuel tank cap and a fuel tank. The breather valve for the fuel tank cap includes a valve body, and the valve body is provided with a one-way air intake part and a one-way exhaust part. When the pressure in the fuel tank is balanced with the outside world, the fuel tank is closed and will not discharge the volatile gas in the fuel tank to protect the environment. Negative pressure is formed in the fuel tank, and the outside air is introduced into the fuel tank through the one-way air intake part to ensure the air pressure balance of the fuel tank; when the pressure in the fuel tank increases, the gas in the fuel tank is discharged to the outside through the one-way exhaust part. Tilted or inverted, the breather valve ensures that the oil in the fuel tank will not flow out, thus ensuring the safety of the fuel tank in use.

Description

technical field [0001] The invention relates to a breathing valve, in particular to a breathing valve for maintaining air pressure balance which can be used on fuel tank caps, medical equipment, petrochemical equipment and the like. Background technique [0002] At present, many devices are equipped with pressure relief valves in order to maintain internal air pressure balance. Such as fuel tank etc., the fuel tank cover of existing gasoline, diesel engine fuel tank all adopts carbon powder and adsorption sponge to stop gasoline diesel oil from volatilizing and overflowing. But the result is unsatisfactory, and a large amount of volatile gases are directly discharged into the atmospheric environment to pollute the air. Especially when the engine is shaken, tilted, or even turned upside down during operation, a large amount of oil and gas will overflow, seriously pollute the air and the environment, affect people's health, and even cause safety hazards such as spontaneous co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/02
CPCF16K17/02B60K2015/03547B60K15/03519B60K15/0406F16K15/147F16K17/19B60K15/035B65D51/165
Inventor 张毅
Owner CHONGQING BAIKE DINGYU TECH CO LTD
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