CN201827465U

CN201827465U - Check valve

Info

Publication number: CN201827465U
Application number: CN2010202714836U
Authority: CN
Inventors: 江耀进; 江杰龙; 江升晖
Original assignee: YIHAN CO Ltd
Current assignee: YIHAN CO Ltd
Priority date: 2010-07-15
Filing date: 2010-07-15
Publication date: 2011-05-11
Anticipated expiration: 2020-07-15

Abstract

The utility model relates to a check valve comprising a valve body, a stop sheet and a flexible film. The valve body is provided with a flow channel, two ends of which extend through the channel and are communicated with the outside. The inner side wall of the flow channel is provided with a flange in a circular manner, and the stop sheet is integrated with the flow channel, besides, the periphery of one side of the stop sheet is warded off by the flange, and the stop sheet is provided with a plurality of through-holes through the two opposite sides. The flexible film has toughness and is capable of telescoping and deforming flexibly. The flexible film comprises a flexible sheet, an extension sheet, and a reflexed sheet. The flexible film is covered on the side of the stop sheet, which is far from the flange. The flexible film is provided with at least one through-hole through two opposite sides, and the corresponding position of the through-hole is disposed on the area of the stop sheet, in which is provided with a plurality of through-holes. The extension sheet extends from the periphery of the flexible sheet and to the place between the periphery of the stop sheet and the inner side wall of the flow channel. The reflexed sheet extends from the outside edge of the extension sheet and is clamped between the stop sheet and the flange. By adopting the above mentioned structure, the utility model has advantages of simple structure, convenient and quick assembly.

Description

Check valve

Technical field

The utility model relates to the technical field of a kind of valve body aspect, refers to a kind of simple in structure and make check valve fast easy to assembly especially.

Background technique

See also shown in Figure 1ly, show the structure of existing check valve to comprise a body 10, a spheroid 11, a spring 12 and a block piece 13.Have the first flow 14 and one second runner 15 that communicate in this body 10, these first flow 14 1 ends form a conical surface 16 and join with this second runner 15.These spheroid 11 contacts supply to block this second runner 15 on this conical surface 16.This spring 12 withstands on a side of this spheroid 11 and pushes this spheroid 11 to this conical surface 16 so that an elastic force to be provided.This block piece 13 be combined in this first flow 14 in, and peak at the other end of this spring 12.So, when the pressure that is flowed into by second runner 15 when fluid reaches certain value, just can promote this spheroid 11 compressing this spring 12, and then flow in this first flow 14, to reach the purpose of one-way flow.When fluid was flowed into by this first flow 14, the elastic force of the pressure of this fluid and this spring 12 can make this spheroid 11 be pushed to this conical surface 16 and block this second runner 15, and then reaches the purpose that prevents adverse current.

Yet, be somebody's turn to do the existing check valve of being formed by a body 10, a spheroid 11, a spring 12 and a block piece 13, structurally comparatively complicated, and make also comparatively trouble and inconvenience in the assembling, and utilize the check effect that is reached spheroid 11 and cooperating of the conical surface 16 also relatively poor.

In view of this, the design people does not attain perfect many disappearances and the inconvenience that causes at above-mentioned existing check valve on structure, and deeply design, and the active research improvement has a fling at and development and Design goes out the utility model.

Summary of the invention

It is a kind of simple in structure and make check valve fast easy to assembly that main purpose of the present utility model is to provide.

Particularly, check valve described in the utility model comprises a valve body, a catch and an elastic film.Wherein, this valve body has two ends and connects to an outside runner, is equipped with a flange on the madial wall of this runner.This catch is combined in this runner, and the periphery of a side is blocked by this flange.Has the plurality of through holes that connects two relative side on this catch.But this elastic film has toughness and elastic telescopic distortion, and this elastic film comprises a spring sheet, an extension piece and a reflexed sheet.This spring sheet covers on this catch away from a side of this flange, has at least one through hole that runs through two opposite sides on this spring sheet, the location beyond the plurality of through holes on this catch of the corresponding position of this through hole.This extension piece extends from the periphery of this spring sheet and position between the madial wall of the side face of this catch and this runner.This reflexed sheet extend from the outer side of this extension piece and be sandwiched in this catch and this flange between.

So, when flowing in the runner of fluid by this elastic film opposition side, this fluid can pass the plurality of through holes of this catch, when reaching certain value, the pressure of this fluid can make of the opposite direction bending deflection of this elastic film towards this catch, so fluid just can flow to opposite side by the through hole of this elastic film, reaches the purpose of one-way flow by this.When flowing in the runner of fluid by this elastic film one side, this elastic film can be subjected to the pressure of this fluid and paste on this catch, so the through hole on this elastic film can be sealed by this catch, plurality of through holes on this catch can be sealed by this elastic film, and then cause this fluid can't flow to another side, reach the good effect that prevents adverse current by this.Particularly, check valve of the present utility model is comparatively simple by the structure of a valve body, a catch and an elastic film, and makes in the assembling also comparatively convenient quick.

Description of drawings

Fig. 1 is the combination generalized section of existing check valve;

Fig. 2 is a three-dimensional exploded view of the present utility model;

Fig. 3 is the enlarged diagram of combination section of the present utility model; And

Fig. 4 is an action schematic representation of the present utility model.

Embodiment

See also Fig. 2～shown in Figure 4, show the structure of check valve described in the utility model, comprise a valve body 20, a catch 30 and an elastic film 40, wherein:

This valve body 20 has two ends and connects to an outside runner 21, is equipped with a flange 22 for this runner 21 is separated into a first flow 23 and one second runner 24 on the madial wall of this runner 21.This valve body 20 can be a body in the utility model.

This catch 30 is a metal material, and is combined in this first flow 23.The periphery of one side of this catch 30 is blocked by this flange 22, and is provided with the plurality of through holes 31 that connects two relative side on the excentral position of this catch 30.

But this elastic film 40 has toughness and elastic telescopic distortion, and it can be materials such as silica gel or rubber.This elastic film 40 comprises a spring sheet 41, an extension piece 42 and a reflexed sheet 43.This spring sheet 41 covers on this catch 30 side away from this flange 22, has a through hole 44 that runs through two opposite sides on this spring sheet 41, through hole 44 is positioned at the central position of this spring sheet 41, the location beyond these through hole 44 corresponding position plurality of through holes 31 on this catch 30.This extension piece 42 extends from the periphery of this spring sheet 41 and position between the madial wall of the side face of this catch 30 and this first flow 23.This reflexed sheet 43 extends from the outer side of this extension piece 42 and is sandwiched between this catch 30 and this flange 22, comes off to prevent it.

See also shown in Figure 3ly, point out that the spring sheet 41 of this elastic film 40 can be subjected to the pressure of this fluid and paste on the side of this catch 30 when fluid is flowed into by this first flow 23.So the through hole 44 on this spring sheet 41 can be sealed by this catch 30, and the plurality of through holes 31 on this catch 30 also can be sealed by this spring sheet 41, and then causes this fluid can't flow to the situation of this second runner 24, can reach the good effect that prevents adverse current by this.

See also shown in Figure 4, point out when fluid is flowed into by this second runner 24, this fluid can pass the plurality of through holes 31 of this catch 30, when the pressure of this fluid reaches certain value, can make the spring sheet 41 outwardly-bent distortion of this elastic film 40 and leave the side of this catch 30, so fluid just can be flow to this first flow 23 by the through hole 44 of this spring sheet 41, and then reaches the purpose of one-way flow.

Because check valve of the present utility model only is made up of a valve body 20, a catch 30 and an elastic film 40, thus whole comparatively simple on structure, and also also comparatively fast convenient in the making assembling.

In sum, owing to the utlity model has above-mentioned advantage and use value, and there is no similar products like deliver in like product, so met the application important document of novel patent, be to file an application in accordance with the law.

Claims

1. check valve is characterized in that comprising:

One valve body has two ends and connects to an outside runner, is equipped with a flange on the madial wall of this runner;

One catch is combined in this runner, and the periphery of a side blocked by this flange, has the plurality of through holes that connects two relative side on this catch; And

One elastic film, but has the distortion of toughness and elastic telescopic, this elastic film comprises a spring sheet, an extension piece and a reflexed sheet, this spring sheet covers on this catch the side away from this flange, has at least one through hole that runs through two opposite sides on this spring sheet, location beyond the plurality of through holes of the corresponding position of this through hole on this catch, this extension piece extends between the madial wall at the side face of this catch and this runner of the periphery of this spring sheet and position, this reflexed sheet extension from the outer side of this extension piece and be sandwiched in this catch and this flange between.

2. check valve as claimed in claim 1 is characterized in that this elastic film has the central position of a through hole position at this spring sheet.

3. check valve as claimed in claim 1, the material that it is characterized in that this elastic film is a silica gel.

4. check valve as claimed in claim 1, the material that it is characterized in that this elastic film is a rubber.

5. as claim 3 or 4 described check valves, the material that it is characterized in that this catch is a metal.