CN102927325A - Circular automatic inverted air valve - Google Patents
Circular automatic inverted air valve Download PDFInfo
- Publication number
- CN102927325A CN102927325A CN201210418190XA CN201210418190A CN102927325A CN 102927325 A CN102927325 A CN 102927325A CN 201210418190X A CN201210418190X A CN 201210418190XA CN 201210418190 A CN201210418190 A CN 201210418190A CN 102927325 A CN102927325 A CN 102927325A
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- Prior art keywords
- air door
- circular
- door body
- air valve
- blade
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- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
A circular automatic inverted air valve comprises a disc-shaped air valve body, wherein the air valve body is mounted on a circular air pipe and is formed by splicing an upper blocking blade and a lower blocking blade; a rotating shaft is respectively arranged on the two blocking blades and is respectively rotationally connected with the wall of the circular air pipe; the upper blocking blade is a body of an upper half part of the circular arc-shaped air valve, and a bulge part smaller than the bottom edge of the upper blocking blade is arranged at the bottom of the upper blocking blade, and is arranged in a centre position; and the lower blocking blade spliced with the upper blocking blade is a body of an lower half part of the circular arc-shaped air valve, and a dent part is formed in the upper part of the lower blocking blade and is matched with the bulge part. According to the circular air valve body formed by splicing the arranged upper and lower blocking blades, the air-out efficiency is greatly improved, and the installation and manufacturing technologies are simplified.
Description
Technical field
The present invention relates to the non-return air door on the airduct equipment, relate in particular to a kind of circular non-return air door.
Background technique
The non-return air door of making on the market at present generally is divided into two kinds, a kind of is square, consist of the situation of venetian blind, by some square blades are set, be movably connected on the quadra, the unlatching of controlling air door by the turn of blade is closed, but its words that are applied to circular duct need to be increased by a transition head, must cause the increase of cost, so people have found out again circular non-return air door, can be easily installed on the circular duct, but mostly being greatly at circular air door body, existing circular non-return air door on the market offers square blade, can only open the part during unlatching, its structural nature and square non-return air door roughly the same can not reach fully and open, cause air draft not smooth, its improvement just improves the shape of air door framework, does not solve the problem that blade is opened fully, is further improved.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of easy for installation, simple in structure, can realize the circular non-return air door opened fully.
The present invention is for solving the problems of the technologies described above, provide following technological scheme: a kind of circular automatic one-way air door, comprise disc air door body, the air door body is installed on the circular duct, it is characterized in that described air door body is spliced by two gear blades up and down, respectively be provided with a rotatingshaft on the two gear blades, rotatingshaft and circular duct wall are rotationally connected.
Described upper gear blade is upper half part circular arc air door body, and the bottom is the lug boss less than the base, and described lug boss is arranged at the central position.By this kind setting, the blade that performs can agilely be rotated, prevent that bottom and circular duct inwall are stuck, reach the effect of opening fully.
Further improve as the present invention, upper half part circular arc air door body base is less than air door body diameter.
Described lower gear blade is and lower half portion circular arc air door body of the blade amalgamation of performing that its top is the depressed part that matches with described lug boss.Connect by upper lower block blade, reach and open fully and fully closed effect.
Be provided with on the described rotatingshaft and two stiffening ribs that are connected of gear blades up and down.By this kind setting, effectively prolong the working life of gear blade, increase the join strength of gear blade and rotatingshaft.
Beneficial effect of the present invention: the circular air door body that the present invention is spliced by upper lower block blade is set, greatly improved air-out efficient, and simplified installation and preparation process.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of lower gear blade in the present invention.
Embodiment
A kind of circular automatic one-way air door, comprise disc air door body 001, air door body 001 is installed on the circular duct 002, described air door body 001 is by two keeping off blades (011 up and down, 012) is spliced, two gear blades (011,012) respectively is provided with a rotatingshaft 003 on, rotatingshaft 003 is rotationally connected with circular duct 002 wall, described upper gear blade 011 is upper half part circular arc air door body, the bottom is the lug boss 111 less than the base, described lug boss 111 is arranged at the central position, upper half part circular arc air door body base is less than air door body 001 diameter, lower gear blade 012 for lower half portion circular arc air door body of blade 011 amalgamation of performing, its top is the depressed part 121 that matches with described lug boss 111, is provided with on the described rotatingshaft 003 and two gear blades (011 up and down, 012) stiffening rib 004 that connects.
Non-return air door of the present invention generally is installed on two relative circular ducts 002, always controls automatic unlatching and the auto-closing of non-return air door of the present invention by the air flow stream in the airduct 002.
Claims (5)
1. circular automatic one-way air door, comprise disc air door body, the air door body is installed on the circular duct, it is characterized in that described air door body is spliced by two gear blades up and down, respectively be provided with a rotatingshaft on the two gear blades, rotatingshaft and circular duct wall are rotationally connected.
2. a kind of circular automatic one-way air door according to claim 1 is characterized in that described upper gear blade is upper half part circular arc air door body, and the bottom is the lug boss less than the base, and described lug boss is arranged at the central position.
3. a kind of circular automatic one-way air door according to claim 1 is characterized in that upper half part circular arc air door body base is less than air door body diameter.
4. a kind of circular automatic one-way air door according to claim 1 is characterized in that the lower gear blade is and lower half portion circular arc air door body of the blade amalgamation of performing, and its top is the depressed part that matches with described lug boss.
5. described a kind of circular automatic one-way air door one of according to claim 1 ~ 4 is characterized in that being provided with on the described rotatingshaft and the stiffening rib that is connected of two gear blades up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210418190XA CN102927325A (en) | 2012-10-29 | 2012-10-29 | Circular automatic inverted air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210418190XA CN102927325A (en) | 2012-10-29 | 2012-10-29 | Circular automatic inverted air valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102927325A true CN102927325A (en) | 2013-02-13 |
Family
ID=47642198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210418190XA Pending CN102927325A (en) | 2012-10-29 | 2012-10-29 | Circular automatic inverted air valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102927325A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135465A (en) * | 2015-09-25 | 2015-12-09 | 无锡市华通电力设备有限公司 | Circular back-draft damper |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213674U (en) * | 1987-09-22 | 1988-07-06 | 石家庄市阀门一厂 | Duct check-valve |
| JP2879878B2 (en) * | 1993-12-03 | 1999-04-05 | 株式会社クボタ | Backflow prevention damper |
| CN201747995U (en) * | 2010-08-17 | 2011-02-16 | 管玉红 | Novel fireproof check valve for flue |
| CN202867944U (en) * | 2012-10-29 | 2013-04-10 | 宜兴台玉环境工程设备有限公司 | Round automatic back draft damper |
-
2012
- 2012-10-29 CN CN201210418190XA patent/CN102927325A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213674U (en) * | 1987-09-22 | 1988-07-06 | 石家庄市阀门一厂 | Duct check-valve |
| JP2879878B2 (en) * | 1993-12-03 | 1999-04-05 | 株式会社クボタ | Backflow prevention damper |
| CN201747995U (en) * | 2010-08-17 | 2011-02-16 | 管玉红 | Novel fireproof check valve for flue |
| CN202867944U (en) * | 2012-10-29 | 2013-04-10 | 宜兴台玉环境工程设备有限公司 | Round automatic back draft damper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135465A (en) * | 2015-09-25 | 2015-12-09 | 无锡市华通电力设备有限公司 | Circular back-draft damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |