CN111578428A - Check valve of roof fan - Google Patents
Check valve of roof fan Download PDFInfo
- Publication number
- CN111578428A CN111578428A CN202010521399.3A CN202010521399A CN111578428A CN 111578428 A CN111578428 A CN 111578428A CN 202010521399 A CN202010521399 A CN 202010521399A CN 111578428 A CN111578428 A CN 111578428A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- roof fan
- roof
- check valve
- 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.)
- Pending
Links
- 230000001360 synchronised effect Effects 0.000 claims abstract description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 abstract description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/02—Roof ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a check valve of a roof fan, which comprises a valve body with a valve body flanging, a plurality of fixed shafts which are uniformly arranged at intervals and are arranged in a rectangular shell of the valve body, and a plurality of valve plates which are arranged on the corresponding fixed shafts and symmetrically arranged; the top end of a bent shaft connected with a fixed shaft is connected with a drop hammer with adjustable position, and a plurality of valve plates are connected with a connecting rod to realize synchronous action under the action of the connecting rod. The non-return air valve of the roof fan can be nested and installed in a reserved hole of roof civil engineering through the flanging of the valve body, and is very simple to install; in addition, the air pressure is designed by matching the position of the drop hammer, and the initial investment and the running cost of the ventilation system are reduced.
Description
Technical Field
The invention relates to the technical field of roof fans, in particular to a check valve of a roof fan.
Background
The roof fan is simple and beautiful, simple to install and convenient to maintain, and is widely used in industrial buildings. The roof blower has downward airflow, and in order to effectively prevent outdoor air from entering a building in non-production time and reduce building load, the prior art only can design valves such as an electric air valve or a pneumatic air valve and the like to close an air supply system. Valves such as electric air valves or pneumatic air valves are expensive in manufacturing cost and high in maintenance cost compared with automatic gravity check air valves.
Disclosure of Invention
The invention aims to solve the problems and provides a roof fan check valve which is simple in structure, low in cost and good in effect, can be automatically closed under the action of gravity, keeps a workshop airtight, does not need electric power and is free of maintenance.
The technical scheme adopted for realizing the purpose of the invention is as follows:
a roof fan check valve comprises a valve body with a valve body flanging, a plurality of fixed shafts which are uniformly arranged at intervals and are arranged in a rectangular shell of the valve body, and a plurality of valve plates which are symmetrically arranged on the corresponding fixed shafts; the top end of a bent shaft connected with a fixed shaft is connected with a drop hammer with adjustable position, and a plurality of valve plates are connected with a connecting rod to realize synchronous action under the action of the connecting rod.
Preferably, the top end of the bent shaft passes through a radial threaded hole in the drop hammer through a bolt to be locked and fixed with the bent shaft, and the position of the bent shaft can be adjusted.
Preferably, the valve body is nested in the reserved hole of the roof civil engineering through the flanging of the valve body.
Preferably, the valve body flanging has the same width as the base of the roof fan.
Preferably, a rectangular space for displacement of the drop hammer is arranged on one side in the rectangular shell of the valve body, and the rectangular space is arranged on one side of the space where the valve plate is located and is separated from the valve plate and is not of a through hole structure.
The non-return air valve of the roof fan can be nested and installed in a reserved hole of roof civil engineering through the flanging of the valve body, and is very simple to install; in addition, the air pressure is designed by matching the position of the drop hammer, and the initial investment and the running cost of the ventilation system are reduced.
Drawings
FIG. 1 is a side schematic view of a roof fan check valve of the present invention;
fig. 2 is a schematic top view of the roof fan check valve of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-2, the non-return air valve of a roof fan provided by the invention comprises a valve body 1, a valve body flange 6, a fixed shaft 7 arranged in a rectangular housing of the valve body 1, a valve plate 2 penetrating through the fixed shaft, a hammer 5 with an adjustable top end connecting position of a bent shaft 4 (an L-shaped structure) and a connecting rod 3 connecting a plurality of rectangular valve plates 2; the rectangular valve plates 2 are connected with the corresponding fixed shafts 7 and are symmetrically arranged; the bent shaft 4 (L-shaped structure) is welded with one end of the fixed shaft 7 connected with the bent shaft.
Wherein the connecting rod 3 is arranged at a position below the direction of the air flow, i.e. below the valve plate 2.
The top end of the bent shaft 4 is connected with a drop hammer 5 with an adjustable position, the drop hammer is moved by up-and-down movement of the bent shaft 4, and a bolt penetrates through a radial threaded hole (not shown) in the drop hammer to be locked and fixed with the bent shaft, namely, the center of the drop hammer is provided with a hole, the drop hammer is sleeved on the bent shaft and is abutted and contacted with the outer surface of the bent shaft by the bolt through the radial threaded hole in one side wall to be screwed and fixed.
Wherein, a rectangular space 8 for the displacement of the drop hammer is arranged at one side in the rectangular shell of the valve body 1, as shown in fig. 2, and is arranged at one side of the space where the valve plate 2 is located, and is separated from each other and has a non-through hole structure.
The turned edge 6 at the top of the valve body 1 is a circle and forms a rectangular turned edge structure, the turned edge is as wide as the base of the roof fan, and the non-return air valve of the roof fan is nested in the reserved hole of the roof civil engineering through the turned edge of the valve body.
The non-return air valve of the roof fan is nested in the reserved hole of the roof civil engineering through the valve body flanging, and the installation is very simple. The air pressure is designed by adjusting the position matching of the drop hammer, and the initial investment and the running cost of a ventilation system are reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A check valve of a roof fan is characterized by comprising a valve body with a valve body flanging, a plurality of fixed shafts which are uniformly arranged at intervals and are arranged in a rectangular shell of the valve body, and a plurality of valve plates which are symmetrically arranged and are arranged on the corresponding fixed shafts; the top end of a bent shaft connected with a fixed shaft is connected with a drop hammer with adjustable position, and a plurality of valve plates are connected with a connecting rod to realize synchronous action under the action of the connecting rod.
2. The roof fan check valve of claim 1, wherein the top end of the bent shaft is locked and fixed to the bent shaft and adjustable in position by a bolt passing through a radial threaded hole in the drop hammer.
3. The roof fan check valve of claim 1, wherein the valve body is nested in a roof civil engineering reserved hole by a valve body flange.
4. The roof fan check valve of claim 1, wherein the valve body flange is the same width as a base of the roof fan.
5. The roof fan check valve of claim 1, wherein a rectangular space for displacement of the drop hammer is provided at one side of the rectangular housing of the valve body, and the rectangular space is arranged at one side of the space where the valve plate is located, and is separated from each other and has a non-through hole structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010521399.3A CN111578428A (en) | 2020-06-10 | 2020-06-10 | Check valve of roof fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010521399.3A CN111578428A (en) | 2020-06-10 | 2020-06-10 | Check valve of roof fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111578428A true CN111578428A (en) | 2020-08-25 |
Family
ID=72118417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010521399.3A Pending CN111578428A (en) | 2020-06-10 | 2020-06-10 | Check valve of roof fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111578428A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201221626Y (en) * | 2008-06-24 | 2009-04-15 | 上海诺地乐通用设备制造有限公司 | Weight dropper type non-return wind valve |
| JP2010139118A (en) * | 2008-12-10 | 2010-06-24 | Dai-Dan Co Ltd | Ventilation equipment |
| CN205207702U (en) * | 2015-10-29 | 2016-05-04 | 中建三局安装工程有限公司 | Socket joint formula flange blast gate that compound tuber pipe of phenolic aldehyde was used |
| CN208185559U (en) * | 2018-04-24 | 2018-12-04 | 河北空调工程安装有限公司 | Volume damper |
| CN109027348A (en) * | 2018-09-29 | 2018-12-18 | 国合动力科技宜兴有限公司 | A kind of blow valve of changeable gas flow direction |
| CN210510395U (en) * | 2019-08-01 | 2020-05-12 | 南通长江阀门制造有限公司 | Balanced air supplement valve |
| CN213020120U (en) * | 2020-06-10 | 2021-04-20 | 中国汽车工业工程有限公司 | Check valve of roof fan |
-
2020
- 2020-06-10 CN CN202010521399.3A patent/CN111578428A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201221626Y (en) * | 2008-06-24 | 2009-04-15 | 上海诺地乐通用设备制造有限公司 | Weight dropper type non-return wind valve |
| JP2010139118A (en) * | 2008-12-10 | 2010-06-24 | Dai-Dan Co Ltd | Ventilation equipment |
| CN205207702U (en) * | 2015-10-29 | 2016-05-04 | 中建三局安装工程有限公司 | Socket joint formula flange blast gate that compound tuber pipe of phenolic aldehyde was used |
| CN208185559U (en) * | 2018-04-24 | 2018-12-04 | 河北空调工程安装有限公司 | Volume damper |
| CN109027348A (en) * | 2018-09-29 | 2018-12-18 | 国合动力科技宜兴有限公司 | A kind of blow valve of changeable gas flow direction |
| CN210510395U (en) * | 2019-08-01 | 2020-05-12 | 南通长江阀门制造有限公司 | Balanced air supplement valve |
| CN213020120U (en) * | 2020-06-10 | 2021-04-20 | 中国汽车工业工程有限公司 | Check valve of roof fan |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |