CN205715846U - A kind of ventilation duct check-valves - Google Patents
A kind of ventilation duct check-valves Download PDFInfo
- Publication number
- CN205715846U CN205715846U CN201620343531.5U CN201620343531U CN205715846U CN 205715846 U CN205715846 U CN 205715846U CN 201620343531 U CN201620343531 U CN 201620343531U CN 205715846 U CN205715846 U CN 205715846U
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- CN
- China
- Prior art keywords
- valve block
- ventilation duct
- valves
- return ring
- check
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- 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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- Check Valves (AREA)
- Air-Flow Control Members (AREA)
Abstract
This utility model relates to a kind of ventilation duct check-valves, and including valve block and non-return ring, described non-return ring is the circulus being fixed on ventilation duct tube wall, and the upper end of described valve block is connected to the side of non-return ring by rotating shaft, and valve block is positioned at the outlet air end of ventilation duct；The lower end of described valve block connects iron block；Described non-return ring lower end is provided with electric magnet, and electric magnet is corresponding with the iron block of valve block lower end to be installed, and electric magnet connects has pressure transducer, controller and power supply, described pressure transducer to be arranged in ventilation duct tube wall, and is positioned at the air intake of ventilation duct.This utility model can improve the stability of check-valves, even if larger fluctuation occurs in ambient pressure, does not also have gas backflow, improves the sealing effectiveness of check-valves.
Description
Technical field
This utility model relates to a kind of ventilation duct check-valves, belongs to field of ventilation equipment.
Background technology
Ventilation duct check-valves is mainly used in ventilating system preventing gas backflow, it is ensured that unidirectional ventilation.When blower fan works, the valve block of check-valves is pushed open by air-flow, keeps ventilating；When blower fan is out of service, valve block is automatically switched off under gravity, stops gas backflow.In real work, due to air pressure the instability of local environment, check-valves of the prior art relies on merely action of gravity to realize the cut out of valve block, when air pressure fluctuation, valve block can not be of completely closed, and the state closed when opening when being in, stop the weak effect of backflow, there is gas leakage problem.
Summary of the invention
This utility model is for solving above-mentioned deficiency, it is provided that a kind of ventilation duct check-valves, the specific scheme is that
A kind of ventilation duct check-valves, including valve block and non-return ring, described non-return ring is the circulus being fixed on ventilation duct tube wall, and the upper end of described valve block is connected to the side of non-return ring by rotating shaft, and valve block is positioned at the outlet air end of ventilation duct；The lower end of described valve block connects iron block；Described non-return ring lower end is provided with electric magnet, and electric magnet is corresponding with the iron block of valve block lower end to be installed, and electric magnet connects has pressure transducer, controller and power supply, described pressure transducer to be arranged in ventilation duct tube wall, and is positioned at the air intake of ventilation duct.
Further, described valve block is aluminum matter valve block or plastic valve plate.
Further, described non-return ring and valve block contact position are provided with sealing bed course.
The useful point of this programme is: the check-valves of this programme is provided with electric magnet, when blower fan is out of service, the valve block of check-valves is closed, and pressure transducer is according to the negative pressure state monitored simultaneously, controls work of electromagnet, magnetic force is produced after electric magnet energising, the iron block of valve block lower end is carried out adhesive, it is ensured that valve block is in stable closed mode, even if larger fluctuation occurs in ambient pressure, do not have gas backflow, improve the sealing effectiveness of check-valves yet.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
A kind of ventilation duct check-valves as shown in Figure 1, including valve block 5 and non-return ring 3, described non-return ring 3 is the circulus being fixed on ventilation duct tube wall 1, and the upper end of described valve block 5 is connected to the side of non-return ring 3 by rotating shaft 4, and valve block 5 is positioned at the outlet air end of ventilation duct；The lower end of described valve block 5 connects iron block 6；Described non-return ring 3 lower end is provided with electric magnet 7, electric magnet 7 is corresponding with the iron block 6 of valve block 5 lower end to be installed, electric magnet 7 connects has pressure transducer 8, controller 9 and power supply 10, described pressure transducer 8 to be arranged in ventilation duct tube wall 1, and be positioned at the air intake of ventilation duct.
Valve block 5 described in the present embodiment is aluminum matter valve block or plastic valve plate；Described non-return ring 3 and valve block 5 contact position are provided with sealing bed course 2.
The useful point of this programme is: the check-valves of this programme is provided with electric magnet, when blower fan is out of service, the valve block of check-valves is closed, and pressure transducer is according to the negative pressure state monitored simultaneously, controls work of electromagnet, magnetic force is produced after electric magnet energising, the iron block of valve block lower end is carried out adhesive, it is ensured that valve block is in stable closed mode, even if larger fluctuation occurs in ambient pressure, do not have gas backflow, improve the sealing effectiveness of check-valves yet.
Claims (3)
1. a ventilation duct check-valves, including valve block and non-return ring, it is characterised in that: described non-return ring is the circulus being fixed on ventilation duct tube wall, and the upper end of described valve block is connected to the side of non-return ring by rotating shaft, and valve block is positioned at the outlet air end of ventilation duct；The lower end of described valve block connects iron block；Described non-return ring lower end is provided with electric magnet, and electric magnet is corresponding with the iron block of valve block lower end to be installed, and electric magnet connects has pressure transducer, controller and power supply, described pressure transducer to be arranged in ventilation duct tube wall, and is positioned at the air intake of ventilation duct.
A kind of ventilation duct check-valves the most according to claim 1, it is characterised in that: described valve block is aluminum matter valve block or plastic valve plate.
A kind of ventilation duct check-valves the most according to claim 1, it is characterised in that: described non-return ring and valve block contact position are provided with sealing bed course.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620343531.5U CN205715846U (en) | 2016-04-22 | 2016-04-22 | A kind of ventilation duct check-valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620343531.5U CN205715846U (en) | 2016-04-22 | 2016-04-22 | A kind of ventilation duct check-valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205715846U true CN205715846U (en) | 2016-11-23 |
Family
ID=57295195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620343531.5U Expired - Fee Related CN205715846U (en) | 2016-04-22 | 2016-04-22 | A kind of ventilation duct check-valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205715846U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709208A (en) * | 2018-06-08 | 2018-10-26 | 宁波欧燕电器有限公司 | The exhaust pipe and exhaust structure of integrated kitchen range or electric oven oven |
| CN108869813A (en) * | 2018-08-29 | 2018-11-23 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of check-valves |
| CN109505997A (en) * | 2019-01-04 | 2019-03-22 | 朱帅霖 | It is a kind of energy-saving without maintenance current flow air-valve |
| CN111878419A (en) * | 2020-08-21 | 2020-11-03 | 江苏大学镇江流体工程装备技术研究院 | Deep sea mining ore pump backflow protection device |
| CN114857756A (en) * | 2022-07-05 | 2022-08-05 | 艾尔科建设工程(江苏)有限公司 | Constant air volume valve with safety mode and use method |
| GB2617365A (en) * | 2022-04-06 | 2023-10-11 | Apnea Tech Ltd | A tube for conveying a fluid |
-
2016
- 2016-04-22 CN CN201620343531.5U patent/CN205715846U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709208A (en) * | 2018-06-08 | 2018-10-26 | 宁波欧燕电器有限公司 | The exhaust pipe and exhaust structure of integrated kitchen range or electric oven oven |
| CN108869813A (en) * | 2018-08-29 | 2018-11-23 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of check-valves |
| CN109505997A (en) * | 2019-01-04 | 2019-03-22 | 朱帅霖 | It is a kind of energy-saving without maintenance current flow air-valve |
| CN111878419A (en) * | 2020-08-21 | 2020-11-03 | 江苏大学镇江流体工程装备技术研究院 | Deep sea mining ore pump backflow protection device |
| CN111878419B (en) * | 2020-08-21 | 2022-04-08 | 江苏大学镇江流体工程装备技术研究院 | Deep sea mining ore pump backflow protection device |
| GB2617365A (en) * | 2022-04-06 | 2023-10-11 | Apnea Tech Ltd | A tube for conveying a fluid |
| GB2617365B (en) * | 2022-04-06 | 2024-05-01 | Apnea Tech Ltd | A tube for conveying a fluid |
| CN114857756A (en) * | 2022-07-05 | 2022-08-05 | 艾尔科建设工程(江苏)有限公司 | Constant air volume valve with safety mode and use method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20180422 |