CN102979933A - Check device - Google Patents
Check device Download PDFInfo
- Publication number
- CN102979933A CN102979933A CN 201210501032 CN201210501032A CN102979933A CN 102979933 A CN102979933 A CN 102979933A CN 201210501032 CN201210501032 CN 201210501032 CN 201210501032 A CN201210501032 A CN 201210501032A CN 102979933 A CN102979933 A CN 102979933A
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- CN
- China
- Prior art keywords
- valve plate
- valve body
- rotating shaft
- valve
- check device
- 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.)
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Abstract
The invention relates to a check device which comprises a valve body; a vent hole is arranged in the valve body; a valve plate is arranged inside the vent hole; two rotating shafts connected with the valve body in a rotary manner are arranged on the valve plate, and the rotating shafts are eccentrically arranged with respect to the center of the valve plate; one of the rotating shafts extends through the valve body to be engaged in transmission connection with an electric motor; and a baffle is arranged on the valve body at one side of the valve plate. The check device is simple in structure, and low in manufacturing and using costs.
Description
Technical field
The present invention relates to a kind of valve means, relate to specifically a kind of check device.
Background technique
Roots blower has simple in structure, smooth running, stable performance, adapt to the advantages such as multiple use, the field such as be widely used in that sewage treatment, flue dust desulfurization, mass transport, gas and flammable explosive gas are carried, heavy oil spray combustion, blast furnace process, aquaculture, pesticide chemical, formaldehyde are synthetic.
Roots blower in the course of the work, gas is to carry under the effect of pressure, when roots blower cuts off the power supply or shuts down, the pressure in roots blower outlet port is greater than the pressure in the Roots, so that the refluence phenomenon appears in the air-flow in roots blower outlet port, cause the overwork of roots blower built-in motor and then cause vexed machine.Generation for fear of above phenomenon, normally in the roots blower outlet port safety check is set, present employed safety check comprises the valve plate that is arranged on the roots blower outlet port, valve plate is controlled by hydraulic control system, opening and closing by hydraulic control system control valve plate, now used check valve structure is complicated, and manufacturing cost and use cost is high.
Summary of the invention
The problem to be solved in the present invention is for above problem, and a kind of simple in structure, check device that manufacturing cost and use cost is low is provided.
For addressing the above problem, the technical solution adopted in the present invention is: a kind of check device, comprise valve body, be provided with vent hole on the described valve body, be provided with valve plate in the described vent hole, be provided with two rotating shafts on the described valve plate, described rotating shaft and valve body are rotatably connected, described rotating shaft is with respect to the center eccentric setting of valve plate, and wherein a rotating shaft passes valve body and is connected with motor-driven, is provided with baffle plate on the valve body of described valve plate one side.
A kind of concrete optimized project, described rotating shaft is horizontally disposed with, and the center line of described rotating shaft is vertical with the center line of valve plate.
A kind of concrete optimized project, the center line of described rotating shaft is positioned at the top of the center line of valve plate.
A kind of concrete optimized project, described baffle plate be shaped as arc.
The present invention takes above technological scheme; have the following advantages: because valve plate is connected by rotating shaft with valve body; rotating shaft is with respect to the center eccentric setting of valve plate; so when blower fan works; valve plate is blown open under the wind-force effect; when blower fan cut off the power supply or shuts down, valve plate is rapid autoshutdown under deadweight and the compressed gas effect of fan outlet place, under the effect of baffle plate; valve plate is closed the fan outlet place; thereby prevent compressed gas backflow back blowing machine fan blade in the system pipeline, cause the damage of blower fan, blower fan is protected; valve plate can open or close automatically; do not need control system to control, simple in structure, manufacturing cost and use cost is low.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing 1 is the structural representation of a kind of check device in the embodiment of the invention;
Accompanying drawing 2 is the sectional view of accompanying drawing 1.
Among the figure:
The 1-valve body; The 2-rotating shaft; The 3-motor; The 4-end cap; The 5-baffle plate; The 6-valve plate; The 7-vent hole.
Embodiment
Embodiment: as shown in Figures 1 and 2, a kind of check device, comprise valve body 1, be provided with vent hole 7 on the described valve body 1, be provided with valve plate 6 in the described vent hole 7, be provided with two rotating shafts 2 on the described valve plate 6, rotating shaft 2 is by being arranged on the bearings on the valve body 1, be provided with on the valve body 1 at bearing place end cap 4 is set, described rotating shaft 2 is rotatably connected with valve body 1, described rotating shaft 2 is with respect to the center eccentric setting of valve plate 6, and wherein a rotating shaft 2 passes valve body 1 and is in transmission connection with motor 3, is provided with baffle plate 5 on the valve body 1 of described valve plate 6 one sides.
Described rotating shaft 2 is horizontally disposed with, and the center line of described rotating shaft 2 is vertical with the center line of valve plate 6.
The center line of described rotating shaft 2 is positioned at the top of the center line of valve plate 6.
Described baffle plate 5 be shaped as arc.
During use; valve body 1 is installed in the outlet port of blower fan; make baffle plate 5 be positioned at valve body 1 near a side of blower fan; when blower fan works; valve plate 6 is around the shaft 2 rotations under the wind-force effect; the top of valve plate 6 is to the direction rotation opposite with wind direction; the bottom of valve plate 6 is to the direction rotation identical with wind direction; valve plate 2 is opened; when blower fan cuts off the power supply or shuts down; because the weight of valve plate 6 bottoms is greater than the weight on valve plate 6 tops; rapid autoshutdown under valve plate 6 deadweights and the compressed gas effect of fan outlet place makes valve plate 6 be in vertical state by baffle plate 5, thereby prevents compressed gas backflow back blowing machine fan blade in the system pipeline; cause the damage of blower fan, blower fan is protected.
Claims (4)
1. check device, comprise valve body (1), be provided with vent hole (7) on the described valve body (1), be provided with valve plate (6) in the described vent hole (7), it is characterized in that: be provided with two rotating shafts (2) on the described valve plate (6), described rotating shaft (2) is rotatably connected with valve body (1), described rotating shaft (2) is with respect to the center eccentric setting of valve plate (6), wherein a rotating shaft (2) passes valve body (1) and motor (3) and is in transmission connection, and is provided with baffle plate (5) on the valve body (1) of described valve plate (6) one sides.
2. a kind of check device as claimed in claim 2, it is characterized in that: described rotating shaft (2) is horizontally disposed with, and the center line of described rotating shaft (2) is vertical with the center line of valve plate (6).
3. a kind of check device as claimed in claim 3, it is characterized in that: the center line of described rotating shaft (2) is positioned at the top of the center line of valve plate (6).
4. such as one of them described a kind of check device of claim 1-3, it is characterized in that: described baffle plate (5) be shaped as arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210501032 CN102979933A (en) | 2012-11-17 | 2012-11-17 | Check device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210501032 CN102979933A (en) | 2012-11-17 | 2012-11-17 | Check device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102979933A true CN102979933A (en) | 2013-03-20 |
Family
ID=47854201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210501032 Pending CN102979933A (en) | 2012-11-17 | 2012-11-17 | Check device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102979933A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707880A (en) * | 2017-10-26 | 2019-05-03 | 东莞前沿技术研究院 | Check-valves and aerostatics |
-
2012
- 2012-11-17 CN CN 201210501032 patent/CN102979933A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707880A (en) * | 2017-10-26 | 2019-05-03 | 东莞前沿技术研究院 | Check-valves and aerostatics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130320 |