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Valve apparatus

A valve device and valve seat technology, applied in the direction of valve devices, power devices, control valves, etc., can solve problems such as damage, shaking, shell wear, etc., and achieve the effect of reducing sliding resistance and smooth and reliable lifting action

Inactive Publication Date: 2014-03-12
PIOLAX CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if the gap between the check valve and the surrounding wall is enlarged, there is a problem that rattling occurs, which becomes a cause of noise, and at the same time, wear and damage of the casing are likely to occur.

Method used

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  • Valve apparatus
  • Valve apparatus
  • Valve apparatus

Examples

Experimental program
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Embodiment Construction

[0023] Below, refer to Figure 1-7 One embodiment of the valve device of the present invention will be described.

[0024] Such as figure 1 , 2 As shown, the valve device 10 has a valve casing 15, and the valve casing 15 is composed of a casing body 20, a lower cover 30 installed on the lower opening of the casing body 20, and an upper cover 40 installed above the casing body 20. constitute. The internal space separated by the housing main body 20 and the lower cover 30 installed below forms a float valve chamber R1, and a float valve 50 described later is arranged in the floating valve chamber R1 in a liftable manner. The internal space partitioned by the upper cover 40 forms a breather chamber R2, and a check valve 60 described later is disposed in the breather chamber R2 so as to be able to move up and down. In addition, the float valve chamber R1 communicates with the inside of the fuel tank, and the breather chamber R2 communicates with an external flow path connected...

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PUM

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Abstract

The invention provides a valve device which comprises a float valve and a check valve, enabling reduction in the size of the device and enabling secure operation of the check valve. The valve device is provided with a valve case in which a float chamber is provided on the lower side and a ventilation chamber is provided on the upper side via a partition wall; the float valve arranged in the float chamber so as to be liftable / lowerable; and the check valve arranged in the ventilation chamber. The partition wall is provided with a communication port communicating the float chamber R1 with the ventilation chamber and having a lower face peripheral edge serving as a first valve seat with / from which the float valve is brought into contact / separated and an upper face peripheral edge serving as a second valve seat with / from which the check valve is brought into contact / separated. A cylindrical wall surrounding the communication port is formed on the upper face on the ventilation chamber of the partition wall. A plurality of projections are arranged in an upper surface of the partition wall, the outside of the second valve seat as well as the inside of the cylindrical wall, and the height of the projection is less than that of the second valve seat. The check valve is formed to have a polygonal plate shape, is arranged within the cylindrical wall so as to be liftable / lowerable, and is made abut on the second valve seat normally.

Description

technical field [0001] The present invention relates to a valve device which is mounted on a fuel tank of an automobile, etc., and has: a float valve which prevents fuel shaken by turning or tilting of the automobile from leaking out of the fuel tank; and a check valve which corresponds to the fuel tank. The pressure in the tank sends fuel vapors to the canister. Background technique [0002] A shut-off valve is installed on a fuel tank of an automobile to prevent fuel that is shaken by turning or tilting the automobile from leaking out of the fuel tank. And, the communication port opened and closed by the stop valve communicates with the canister arranged outside the fuel tank via the check valve. [0003] As a check valve, for example, a valve device is disclosed in the following Patent Document 1, which has: a communication port communicating with the inside of the fuel tank; a cylindrical wall formed on the outer periphery of the communication port; and a spherical chec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K24/04F16K15/00F02M37/00
CPCB60K15/03B60K15/03519B60K2015/03256B60K2015/03289F16K15/04F16K24/04
Inventor 古谷仁
Owner PIOLAX CO LTD