CN2056964U - Check valve for oil fume or smoke extractor - Google Patents
Check valve for oil fume or smoke extractor Download PDFInfo
- Publication number
- CN2056964U CN2056964U CN 89203075 CN89203075U CN2056964U CN 2056964 U CN2056964 U CN 2056964U CN 89203075 CN89203075 CN 89203075 CN 89203075 U CN89203075 U CN 89203075U CN 2056964 U CN2056964 U CN 2056964U
- Authority
- CN
- China
- Prior art keywords
- valve body
- shaped support
- valve
- safety check
- described safety
- 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 - Lifetime
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- Check Valves (AREA)
Abstract
The utility model relates to a check valve for oil fume or smoke extractor, comprising a valve body and a movable valve. The valve body is in shape of cylinder. One end of the valve body is connected with the flue outlet of oil fume or smoke extractor; the other end of the valve body which is connected with the fume exhausting tube extends out from the middle part of the valve body to the horizontal tube which is perpendicular with the axial line of the valve body. The spout of the horizontal tube is in shape of rectangle, and the movable valve inserts from the horizontal tube to support on the circular flange of the inner wall of the valve body. The movable valve comprises a U-shaped support frame, blades which are in shape of semicircle, connecting pieces and a covering plate. The utility model which can automatically turn on and turn off following the operating condition of oil fume or smoke extractor without any motive power can prevent the fume exhausting tube of oil fume or smoke extractor flowing back fume and smoke.
Description
The utility model relates to a kind of safety check of range hood, particularly a kind of can be according to the working state of range hood and the safety check of automatic opening-closing.
Existing range hood does not have to be equipped with the valve prevent that flue gas from flowing backwards, the phenomenon that flue gas pours in down a chimney often occurs when the outlet pipe of range hood and public chimney join, and environmental pollution is serious.
Task of the present utility model is a kind of valve that prevents that range hood gas exhaust duct flue gas from flowing backwards of design, and this valve do not need additionaling power just can be with the working state of range hood automatic opening-closing.
The utility model is achieved in that this valve is made up of valve body and Movable valve.Valve body is a cylindrical shape, and an end connects the smoke outlet of range hood, and the other end and gas exhaust duct join.Stretch out one section transverse tube vertical with valve axis from the valve body middle part, it is square that the mouth of pipe is prolate.Movable valve inserts in transverse tube, is bearing on the annular flange flange of valve interior wall.Movable valve is made up of U-shaped support, semicircle blade, connecting sheet and cover plate.The width of U-shaped support is slightly less than the internal diameter of valve body, has the circular hole that a diameter is equal to or slightly less than the annular flange flange internal diameter on the support, and the circular hole center is on the axis of valve body.There is a radially crossbeam at the circular hole middle part.The end of U-shaped support is a groove that is embedded with elaxtic seal.Semicircle blade has 2, connects into a circle with the one side of connecting sheet, and the another side of connecting sheet is fixed on the radially crossbeam of U-shaped support.When range hood started, the effect of blade wind-engaging power was upwards opened, and discharged flue gas.When range hood quits work, blade just conducted oneself with dignity and the elastic force effect of connecting sheet and self-return to closed condition.When having flue gas to flow backwards in the gas exhaust duct, blade top pressurized impels blade closely to contact with the U-shaped support, thereby plays the effect that prevents that flue gas from flowing backwards.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a plan view of the present utility model.
Below in conjunction with drawings and Examples structure of the present utility model is further described.
This safety check is made up of cylinder valve (1) and Movable valve (4).The interior insertion of transverse tube (2) that Movable valve (4) stretches out from valve body (1) middle part.Movable valve (4) is made up of U-shaped support (5), semicircle blade (6), connecting sheet (7), cover plate (11).The A/F of transverse tube (2) equals the internal diameter of valve body (1), and open height is higher 1～3 millimeter than the groove of U-shaped support.There is a circle annular flange flange (3) at the inwall middle part of valve body (1), and width is 2～5 millimeters, and the bottom surface of its end face and transverse tube (2) is linked to be a plane.Semicircle blade (6) has 2, and the centre connects into a circle with connecting sheet (7), and diameter of a circle is bigger 2～4 millimeters than the Circularhole diameter of U-shaped support (5).Connecting sheet useable glass fiber, sheet rubber etc. have certain flexible material to make.There is a crossbeam (9) radially at the circular hole of U-shaped support middle part, is used for fixing the connecting sheet (7) of blade.The width of U-shaped support (5) is littler 1～2 millimeter than the internal diameter of valve body (1).A location fork (10) that matches with flange (3) is arranged at support end bottom, and after Movable valve inserted valve body, location fork (10) just was stuck on the flange (3) of valve body, plays the fixed valve support.There is a groove (8) end of U-shaped support (5), is embedded in elaxtic seals such as flexible glue bar or foam plastics strip at groove, the usefulness of fix Movable valve and sealing transverse tube mouth.Outer end at groove (8) connects a cover plate (11), and the width of cover plate is consistent with transverse tube (2) with height.The cover plate middle part is provided with handle, so that Movable valve is pulled out cleaning.The valve body of this valve, U-shaped support, blade, all available polypropylene of cover plate, PVC or engineering plastics are injection molded, but blade and cover plate also punching out form.The utlity model has following advantage:
1. simple in structure, reliable, easy for installation, it is effective that anti-flue gas flows backwards;
2. do not need additionaling power, valve can be with the working state of range hood automatic opening-closing;
3. Movable valve can take out separately, is convenient to clean;
4. draw materials easily, with low cost, long service life.
Claims (7)
1, a kind of safety check of range hood is made up of valve body and Movable valve, of the present utility model being characterised in that:
A. valve body (1) is a cylindrical shape, stretches out one section transverse tube vertical with valve axis (2) from the valve body middle part, and it is square that the mouth of pipe is prolate, and Movable valve (4) inserts in transverse tube (2), is bearing on the annular flange flange (3) of valve body (1) inwall;
B. Movable valve (4) is made up of U-shaped support (5), semicircle blade (6), connecting sheet (7) and cover plate (11);
The width of c.U shape support (5) is slightly less than valve body (1) internal diameter, have a diameter on the support and be equal to or slightly less than the circular hole of annular flange flange (3) internal diameter, the circular hole center is on the axis of valve body (1), it is a groove (8) that is embedded with elaxtic seal that there are a radially crossbeam (9), the end of U-shaped support (5) in the circular hole middle part;
D. semicircle blade has 2, connects into a circle with the one side of connecting sheet (7), and the another side of connecting sheet (7) is fixed on the radially crossbeam (9) of U-shaped support.
2, according to the described safety check of claim 1, it is characterized in that the A/F of transverse tube (2) equals the internal diameter of valve body (1), open height is higher 1～3 millimeter than the groove (8) of U-shaped support.
3, according to the described safety check of claim 1, the width that it is characterized in that annular flange flange (3) is 2～5 millimeters, and the bottom surface of its end face and transverse tube (2) is linked to be a plane.
4,, it is characterized in that 2 semicircle blades are bigger 2～4 millimeters than the Circularhole diameter of U-shaped support (5) with the round diameter that connecting sheet (7) is formed by connecting according to the described safety check of claim 1.
5, according to the described safety check of claim 1, it is characterized in that the width of U-shaped support (5) is littler 1～2 millimeter than the internal diameter of valve body (1), a location fork (10) that matches with annular flange flange (3) is arranged at the terminal bottom of U-shaped support (5).
6, according to claim 1 or 2 or 3 or 4 or 5 described safety check, it is characterized in that valve body (1), U-shaped support (5), semicircle blade (6), all available polypropylene of cover plate (11), PVC or engineering plastics are injection molded, but blade and cover plate also punching out form.
7,, it is characterized in that connecting sheet (7) useable glass fiber, sheet rubber etc. have certain flexible material to make according to claim 1 or 4 described safety check.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89203075 CN2056964U (en) | 1989-03-15 | 1989-03-15 | Check valve for oil fume or smoke extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89203075 CN2056964U (en) | 1989-03-15 | 1989-03-15 | Check valve for oil fume or smoke extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2056964U true CN2056964U (en) | 1990-05-09 |
Family
ID=4860706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89203075 Expired - Lifetime CN2056964U (en) | 1989-03-15 | 1989-03-15 | Check valve for oil fume or smoke extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2056964U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734852A (en) * | 2012-05-25 | 2012-10-17 | 付建中 | Liquid pressure sealed anti-backflow oil smoke exhauster |
| CN103032910A (en) * | 2011-09-30 | 2013-04-10 | 张琦 | Range hood |
| CN103511681A (en) * | 2012-06-18 | 2014-01-15 | 张琦 | Check valve |
| CN107084415A (en) * | 2017-04-12 | 2017-08-22 | 广东万家乐燃气具有限公司 | A kind of lampblack absorber with reverse-filling function |
-
1989
- 1989-03-15 CN CN 89203075 patent/CN2056964U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032910A (en) * | 2011-09-30 | 2013-04-10 | 张琦 | Range hood |
| CN103032910B (en) * | 2011-09-30 | 2017-10-31 | 张琦 | A kind of smoke exhaust ventilator |
| CN102734852A (en) * | 2012-05-25 | 2012-10-17 | 付建中 | Liquid pressure sealed anti-backflow oil smoke exhauster |
| CN103511681A (en) * | 2012-06-18 | 2014-01-15 | 张琦 | Check valve |
| CN107084415A (en) * | 2017-04-12 | 2017-08-22 | 广东万家乐燃气具有限公司 | A kind of lampblack absorber with reverse-filling function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |