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External anti-tipping valve

A dump valve, external technology, applied in the field of mechanical valves, can solve problems such as accidental leakage and accidental closing of the anti-dump valve, and achieve the effect of increasing the degree of freedom and reducing the risk of accidental fuel leakage

Active Publication Date: 2013-10-23
SUZHOU YUANNENG DONGLI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides an external anti-dumping valve, which solves the safety hazards of accidental closing or accidental leakage of the external anti-dumping valve through targeted structural improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] combine figure 2 As shown, a 90-degree external anti-dumping valve of the present invention, the valve body 1 and the valve seat 2 are connected to form a valve cavity B, and the top of the valve body 1 is integrally provided with a first vent 11, and the first vent 11 is connected with the valve The cavity B is connected through the valve port 12, and the center of the bottom of the valve seat 2 is provided with a conical pit 22, and a cross groove can be provided in the longitudinal direction of the conical pit 22;

[0024] A cover-shaped float 3 is arranged above the valve seat 2, and a valve core 31 that cooperates with the valve port 12 and can close the first vent port is provided on the top outside of the float 3. The valve core 31 and the valve port 12 can be in contact with a spherical surface. It can also be contacted with a rounded surface, and the line contact can ensure the tightness of the valve closing. The conical structure can ensure that it can be eff...

Embodiment 2

[0030] combine Figure 4 As shown, a 180-degree external anti-dumping valve of the present invention, on the basis of the structure of Embodiment 1, retains the internal isolation cylinder 23 and the external valve cover 5', and the third vent 51' and The included angle between the first ventilation ports 11 is adjusted to 180 degrees, and a curved cavity is formed between the valve cover 5', the valve seat 2 and the third ventilation port 51', and the second ventilation port 21 and the liquid discharge port 24 are in the The cavity between the valve cover 5' and the valve seat 2 communicates with each other, where the gas flow and liquid gather. This 180-degree external anti-dumping valve does not need to use a rubber sealing ring to be embedded with the fuel tank, and only needs to use a separate pipeline to connect the third vent 51' to the fuel tank.

Embodiment 3

[0032] combine Figure 5 As shown, a 0-degree external anti-dumping valve of the present invention, on the basis of the structure of Embodiment 1, retains the internal isolation cylinder 23 and the external valve cover 5'', and the third vent 51' ' and the angle between the first vent 11 is adjusted to 0 degrees, then a curved cavity is formed between the valve cover 5'', the valve seat 2 and the third vent 51'', the second vent 21 and the third vent 51'' The liquid discharge port 24 communicates in the cavity between the valve cover 5 ″ and the valve seat 2 , where the gas flow and liquid are collected. This 0-degree external anti-dumping valve does not need to use the rubber sealing ring to be embedded with the fuel tank, and only needs to use a separate pipeline to connect the third vent 51'' to the fuel tank.

[0033] The 180-degree external anti-dump valve described in Embodiment 2 and the 0-degree external anti-dump valve described in Embodiment 3 are mainly used on mot...

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Abstract

The invention discloses an external anti-tipping valve, wherein a valve body (1) and a valve seat (2) are connected to form a valve cavity (B), a cover-shaped floater (3) is arranged above the valve seat (2), a steel ball (4) which can freely move and can be used for enabling the floater (3) to upwards and downwards move inside the valve cavity (B) is placed between the floater (3) and the valve seat (2), an isolating barrel (23) is upwards convexly arranged inside the valve cavity (B) from the bottom of the valve seat (2), and the inner diameter of the isolating barrel (23) is greater than the outer diameter of the floater (3); and a valve cover (5) is arranged at the lower end of the valve seat (2), the valve cover (5) is connected with the valve seat (2), and a third ventilating opening (51) is formed in the lower end surface of the valve cover (5). According to the external anti-tipping valve disclosed by the invention, the anti-tipping valve can be prevented from being accidentally closed by arranging the isolating barrel; the anti-tipping valve is externally placed by adding the valve cover at the bottom, so as to reduce the accidental fuel-oil leaking risk of the anti-tipping valve; and the external anti-tipping valve can be used as a ventilating valve on a universal engine and a motorcycle.

Description

technical field [0001] The invention relates to a mechanical valve, especially a breather valve installed on a general engine or a motorcycle to prevent fuel oil from leaking after the fuel tank is tilted. [0002] Background technique [0003] combine figure 1 As shown, the traditional external anti-dumping valve, the valve cavity is sealed by the valve body and the valve seat. After the anti-dumping valve is tilted to a certain angle, the steel ball moves and the float moves up and down along the inner wall of the valve, and there is a gap between the float and the inner wall of the valve through which gas can pass. Generally, the angle between the lower end vent and the first vent is divided into three types: 90 degrees, 180 degrees and 0 degrees, so as to form a 90-degree external anti-dumping valve with the same internal structure but different installation methods, 180 degrees Degree external anti-dumping valve and 0 degree external anti-dumping valve. The 90-degre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/42F16K27/12F16K31/20
Inventor 朱正华
Owner SUZHOU YUANNENG DONGLI TECH CO LTD
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