CN201539607U - Air pipe check valve - Google Patents
Air pipe check valve Download PDFInfo
- Publication number
- CN201539607U CN201539607U CN2009201889826U CN200920188982U CN201539607U CN 201539607 U CN201539607 U CN 201539607U CN 2009201889826 U CN2009201889826 U CN 2009201889826U CN 200920188982 U CN200920188982 U CN 200920188982U CN 201539607 U CN201539607 U CN 201539607U
- Authority
- CN
- China
- Prior art keywords
- hinge
- valve body
- valve block
- valve
- airduct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an air pipe check valve comprising a valve body, a valve sheet and a valve sheet rotating shaft, wherein the valve body is fixed on the inner wall of an exhaust duct along a direction vertical to gas flow direction and provided with an air vent; the valve sheet covers the air vent and is rotatably connected to the valve body through the valve sheet rotating shaft that is a hinge arranged on the valve body; the hinge is provided with a first hinge surface fixedly connected with the valve body and a second hinge surface fixedly connected with the valve sheet; the first and the second hinge surfaces are hinged through a hinge shaft; and the length of the hinge shaft is less than that of the valve sheet. The utility model solves the problems in the prior art and provides the air pipe check valve with better sealing performance.
Description
Technical field
The utility model relates to a kind of airduct safety check that can prevent in the ventiduct system that air flows backwards in the airduct that is installed in.
Background technique
In the prior art, need usually in the ventiduct systems such as air-conditioning, range hood the airduct safety check to be installed to prevent that air flows backwards in the airduct, for example in public flue, just the airduct safety check must be installed, otherwise,, can form refluence because the pressure of public flue is bigger.
As shown in Figure 1, traditional airduct safety check comprises valve body 1, valve block 2, valve block rotatingshaft 3, valve body 1 is along being fixed in the inwall of exhaust duct and having a vent hole perpendicular to gas flow, valve block 2 is covered on the vent hole and by valve block rotatingshaft 3 and is rotationally connected with valve body 1, the two ends of its middle valve plate rotatingshaft 3 fixedly mount by the mounting hole that is formed at valve body 1 corresponding position, and also are formed with the sleeve pipe that is used to wear valve block rotatingshaft 3 on the valve block 2.Accompanying drawing 2 is the schematic representation of the airduct safety check opening state in the accompanying drawing 1, and when positive draft, thereby valve block 2 rotates around valve block rotatingshaft 3 under the effect of wind-force and makes gas communication; Accompanying drawing 3 is the schematic representation of the airduct closure of check ring state in the accompanying drawing 1, and when back draught, thereby valve block 2 falls and be covered in blocking-up back draught on the vent hole under the effect of self gravitation.
As can be seen, in the prior art between the valve block rotatingshaft and valve body of airduct safety check, must reserve running clearance between valve block and the valve body so that valve block freely rotates, when air refluence valve block is closed, these gaps just become the leakage way of back draught, make the performance of airduct safety check have a greatly reduced quality, especially when fan parallel-connection moves, every typhoon machine all should be installed safety check, in case can not blocking air fully, safety check flows backwards, operating blower fan will be subjected to the leaking out influence of standby fan safety check and form short circuit, and the operation air quantity and the blast of air-line system had an immense impact on.
The model utility content
For overcoming above-mentioned shortcoming, the purpose of this utility model is to provide a kind of sealability airduct safety check preferably.
In order to reach above purpose, the technical solution adopted in the utility model is: a kind of airduct safety check that is arranged in the exhaust duct, it comprises valve body, valve block, the valve block rotatingshaft, valve body is along being fixed in the inwall of exhaust duct and having a vent hole perpendicular to gas flow, valve block is covered on the vent hole and by the valve block rotatingshaft and is rotationally connected with valve body, the valve block rotatingshaft is one to be arranged on the hinge on the valve body, hinge has the first hinge face and the second hinge face that is fixedly connected with valve block that are fixedly connected with valve body, hinged between the first hinge face and the second hinge face by a hinge axis, the length of hinge axis is less than the length of valve block, because valve block and valve body are mutually permanently connected by hinge, the valve block rotatingshaft does not need to penetrate valve body, has eliminated the gap leakage between valve block rotatingshaft and the valve body.
Preferably, the edge of vent hole is provided with a seal ring, seal ring between valve body and valve block, thereby make and contact by flexible seal ring between valve block and the valve body, press down tight seal at the pressure of back draught, thereby blocked the leakage way of back draught.
Further, valve block can be rotationally connected with valve body by a plurality of hinges.
Further, comprise a plurality of valve blocks, each valve block is rotationally connected with valve body by hinge respectively.
Owing to adopted technique scheme, made the utility model not only avoid the gap leakage between valve block rotatingshaft and the valve body, and blocked the leakage way of back draught that sealability is better.
Description of drawings
Accompanying drawing 1 is the plan view of airduct safety check of the prior art;
Accompanying drawing 2 is the schematic representation of airduct safety check opening state of the prior art;
Accompanying drawing 3 is the schematic representation of airduct closure of check ring state of the prior art;
Accompanying drawing 4 is the plan view of the airduct safety check among the utility model embodiment;
Accompanying drawing 5 is the schematic representation of the airduct safety check opening state among the utility model embodiment;
Accompanying drawing 6 is the schematic representation of the airduct closure of check ring state among the utility model embodiment.
Wherein: 1, valve body; 2, valve block; 3, valve block rotatingshaft; 4, seal ring.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby protection domain of the present utility model is made more explicit defining so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that.
Referring to accompanying drawing 3, a kind of airduct safety check that is arranged in the exhaust duct, it comprises valve body 1 and is arranged on valve block 2 on the valve body 1, be rotationally connected by valve block rotatingshaft 3 between valve body 1 and the valve block 2, valve block rotatingshaft 3 is one to be arranged on the hinge on the valve body 1, hinge has the first hinge face and the second hinge face that is fixedly connected with valve block 2 that are fixedly connected with valve body 1, hinged by a hinge axis between the first hinge face and the second hinge face, the length of hinge axis is less than the length of valve block 2.Valve body 1 is along being fixed in the inwall of exhaust duct and having a vent hole perpendicular to gas flow, valve block 2 is covered on the vent hole and by valve block rotatingshaft 3 and is rotationally connected with valve body 1, the edge of vent hole is provided with a seal ring 4, and seal ring 4 is between valve body 1 and valve block 2.
Accompanying drawing 5 is the schematic representation of the airduct safety check opening state in the present embodiment, and when positive draft, thereby valve block 2 rotates around valve block rotatingshaft 3 under the effect of wind-force and makes gas communication; The schematic representation of the airduct closure of check ring state in accompanying drawing 6 present embodiments, when back draught, thereby valve block 2 is sagging and be covered on the vent hole blocking-up back draught under the effect of self gravitation, and valve block 2 is being pressed on the seal ring 4 under the effect of wind-force, thus thoroughly isolated gap of leaking out.
Here it is to be noted, as a kind of variation of present embodiment, valve block 2 can be rotationally connected with valve body 1 by the less hinge of a plurality of sizes, in addition, airduct safety check in the present embodiment can also comprise a plurality of valve blocks 2, and each valve block 2 is rotationally connected with valve body 1 by hinge respectively.
By above-mentioned mode of execution, be not difficult to find out that the utility model is a kind of sealability airduct safety check preferably.
Abovely the utility model is described in detail in conjunction with mode of execution; only be explanation technical conceive of the present utility model and characteristics; its purpose is to allow the people that is familiar with this technology understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of being done according to the utility model spirit change or modify, and all should be encompassed in the protection domain of the present utility model.
Claims (4)
1. one kind is arranged on the interior airduct safety check of exhaust duct, it comprises valve body (1), valve block (2), valve block rotatingshaft (3), described valve body (1) is along being fixed in the inwall of described exhaust duct and having a vent hole perpendicular to gas flow, described valve block (2) is covered on the described vent hole and is rotationally connected with described valve body (1) by described valve block rotatingshaft (3), it is characterized in that: described valve block rotatingshaft (3) is one to be arranged on the hinge on the described valve body (1), described hinge has the first hinge face and the second hinge face that is fixedly connected with described valve block (2) that are fixedly connected with described valve body (1), hinged by a hinge axis between described first hinge face and the described second hinge face, the length of described hinge axis is less than the length of described valve block (2).
2. airduct safety check according to claim 1 is characterized in that: the edge of described vent hole is provided with a seal ring (4), and described seal ring (4) is positioned between described valve body (1) and the described valve block (2).
3. airduct safety check according to claim 1 and 2 is characterized in that: described valve block (2) is rotationally connected with described valve body (1) by a plurality of described hinges.
4. airduct safety check according to claim 1 and 2 is characterized in that: comprise a plurality of valve blocks (2), described each valve block (2) is rotationally connected with described valve body (1) by described hinge respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201889826U CN201539607U (en) | 2009-10-27 | 2009-10-27 | Air pipe check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201889826U CN201539607U (en) | 2009-10-27 | 2009-10-27 | Air pipe check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539607U true CN201539607U (en) | 2010-08-04 |
Family
ID=42591059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201889826U Expired - Fee Related CN201539607U (en) | 2009-10-27 | 2009-10-27 | Air pipe check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539607U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513810A (en) * | 2019-09-12 | 2019-11-29 | 珠海格力电器股份有限公司 | Fan wall system, method, device and unit equipment |
| CN114517847A (en) * | 2022-01-19 | 2022-05-20 | 中国核电工程有限公司 | Check valve |
-
2009
- 2009-10-27 CN CN2009201889826U patent/CN201539607U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513810A (en) * | 2019-09-12 | 2019-11-29 | 珠海格力电器股份有限公司 | Fan wall system, method, device and unit equipment |
| CN114517847A (en) * | 2022-01-19 | 2022-05-20 | 中国核电工程有限公司 | Check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20161027 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |