CN211039826U

CN211039826U - Exhaust valve

Info

Publication number: CN211039826U
Application number: CN201922016865.8U
Authority: CN
Inventors: 周昌申; 杨佳明; 郭祥天; 赵胜海; 田瑞娟; 阙胜才; 张艳; 李涛; 周伊优; 王辉; 柳松
Original assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Current assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-07-17
Anticipated expiration: 2029-11-19

Abstract

The utility model belongs to the technical field of the aircraft pipeline annex, in particular to discharge valve. Comprises a shell (1), a spring (2), a pull handle (3), a fixed supporting plate (4), a movable supporting plate (5), a valve (6) and an end cover (7); the pull handle (3) is pulled outwards to enable the exhaust valve to be changed from a closed state to an open state, and faults such as whether the valve (6) in the exhaust valve is blocked, whether the spring (2) fails and the like are checked at any time or according to the situation. When the above actions are carried out, the exhaust valve is not required to be detached from the system, and the in-situ inspection of the exhaust valve fault is realized. Time and labor are saved, the system can be checked before working, exhaust valve faults can be found at any time, and reliability and safety of the system are improved.

Description

Exhaust valve

Technical Field

The utility model belongs to the technical field of the aircraft pipeline annex, in particular to discharge valve.

Background

The aircraft pipeline system adopts fluid as working medium, when gas is used as the working medium, the flow and pressure of the air are generally controlled to meet the requirement of the working performance of the system, wherein an external-discharge type pressure control valve, namely an exhaust valve, is widely used due to simple structure, small volume and low cost, and the valve generally needs to be checked according to the situation or regularly checked to prove the integrity of the valve and reduce the probability of failure in the working process. At present, the outward-discharging type pressure control valve can not be checked according to the situation, regular checking can be carried out only by detaching the valve from the system, and in-situ checking can not be carried out.

Disclosure of Invention

The utility model discloses the purpose is for solving above-mentioned technical problem, designs a discharge valve to overcome current discharge valve and can't carry out the inspection of looking the feelings and the normal position inspection, use and the not enough that the maintenance cost is high.

The technical scheme of the utility model

An exhaust valve is characterized by comprising a shell 1, a spring 2, a pull handle 3, a fixed support plate 4, a movable support plate 5, a valve 6 and an end cover 7; the movable supporting plate 5 penetrates through the pull handle 3 to be fixedly connected with the valve 6 and is arranged in the shell 1, the spring 2 is sleeved on the pull handle 3 and then penetrates through the fixed supporting plate 4, the fixed supporting plate 4 is fixed with the shell 1, and then the end cover 7 is arranged on the shell 1.

The fixed supporting plate 4 and the movable supporting plate 5 are of circular plate structures, and a plurality of through holes are formed in the plate surfaces.

The sum of the areas of the through holes is larger than the area of the inlet of the exhaust valve and smaller than the area of the outlet of the exhaust valve.

The diameters of the fixed supporting plate 4 and the movable supporting plate 5 are matched with the inner diameter of the shell 1.

After the valve 6 is assembled with the pull handle 3, the length of the pull handle 3 is ensured to be exposed out of the outlet of the shell 1 when the valve is in a closed state.

The fixed supporting plate 4 and the movable supporting plate 5 are made of hard materials with certain strength and rigidity.

The technical advantages are that:

The pull handle 3 is pulled outwards to enable the exhaust valve to be changed from a closed state to an open state, and faults such as whether the valve 6 in the exhaust valve is blocked, whether the spring 2 fails and the like are checked at any time or according to the situation. When the above actions are carried out, the exhaust valve is not required to be detached from the system, and the in-situ inspection of the exhaust valve fault is realized. Time and labor are saved, the system can be checked before working, exhaust valve faults can be found at any time, and reliability and safety of the system are improved.

Drawings

FIG. 1 is a schematic view of the principle of the open state

FIG. 2 is a schematic view of the closed state principle

Wherein: 1-shell, 2-spring, 3-pull handle, 4-fixed support plate, 5-movable support plate, 6-valve and 7-end cover

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

As shown in fig. 1 and fig. 2, an exhaust valve comprises a shell 1, a spring 2, a pull handle 3, a fixed support plate 4, a movable support plate 5, a valve 6 and an end cover 7; the movable supporting plate 5 penetrates through the pull handle 3 to be fixedly connected with the valve 6 and is arranged in the shell 1, the spring 2 is sleeved on the pull handle 3 and then penetrates through the fixed supporting plate 4, the fixed supporting plate 4 is fixed with the shell 1, and then the end cover 7 is arranged on the shell 1.

The fixed supporting plate 4 and the movable supporting plate 5 are of circular plate structures, a plurality of through holes are formed in the plate surface, the sum of the areas of the through holes is larger than the area of an inlet of the exhaust valve and smaller than the area of an outlet of the exhaust valve, and the diameter of the through holes is matched with the inner diameter of the shell 1; the selected material is a hard material with certain strength and rigidity.

In a normal state, the valve 6 in the exhaust valve is tightly pressed on the shell 1 under the action of the spring 2, the exhaust valve is in a closed state, pressure gas entering from the inlet of the exhaust valve is sealed by the valve 6 and cannot pass through the valve, when the pressure of inlet gas is gradually increased until the pressure is higher than the pressing force of the spring 2 in the exhaust valve, the valve 6 is pushed open, at the moment, the exhaust valve is in an open state, and the high-pressure gas entering the inlet of the exhaust valve flows out from the outlet of the movable supporting plate 5 and the fixed supporting plate 6 in the inner cavity of the exhaust valve, so that the pressure. The normally closed exhaust valve can be opened by pulling the pull handle 3 in the exhaust valve, and this action can be used to check whether the valve 6 in the exhaust valve is stuck, whether the spring 2 is failed, and other faults. When the above actions are carried out, the exhaust valve is not required to be detached from the system, and the in-situ inspection of the exhaust valve fault is realized. Time and labor are saved, the system can be checked before working, exhaust valve faults can be found at any time, and reliability and safety of the system are improved.

Claims

1. An exhaust valve is characterized by comprising a shell (1), a spring (2), a pull handle (3), a fixed support plate (4), a movable support plate (5), a valve (6) and an end cover (7); the movable supporting plate (5) penetrates through the pull handle (3) to be fixedly connected with the valve (6) and is arranged in the shell (1), the spring (2) is sleeved on the pull handle (3) and penetrates through the fixed supporting plate (4), the fixed supporting plate (4) is fixed with the shell (1), and then the end cover (7) is arranged on the shell (1).

2. The exhaust valve according to claim 1, characterized in that the fixed support plate (4) and the movable support plate (5) are of a circular plate structure, and a plurality of through holes are formed in the plate surface.

3. The exhaust valve according to claim 2 wherein the sum of the areas of said plurality of through holes is greater than the area of the exhaust valve inlet and less than the area of the exhaust valve outlet.

4. Exhaust valve according to claim 1, characterized in that the diameter of the fixed support plate (4), the movable support plate (5) matches the inner diameter of the housing (1).

5. An air outlet valve according to claim 1, characterized in that the valve (6) is assembled with the pull handle (3) and has a length such that the pull handle (3) is exposed to the outside of the outlet of the housing (1) in the closed state of the valve.

6. Exhaust valve according to claim 1, characterized in that the fixed support plate (4), the movable support plate (5) are of a hard material having a certain strength and rigidity.