CN201507322U - Device for preventing gas reflux - Google Patents
Device for preventing gas reflux Download PDFInfo
- Publication number
- CN201507322U CN201507322U CN2009200927924U CN200920092792U CN201507322U CN 201507322 U CN201507322 U CN 201507322U CN 2009200927924 U CN2009200927924 U CN 2009200927924U CN 200920092792 U CN200920092792 U CN 200920092792U CN 201507322 U CN201507322 U CN 201507322U
- Authority
- CN
- China
- Prior art keywords
- air duct
- adverse current
- gas reflux
- pivot
- gas adverse
- 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 - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A device for preventing gas reflux includes an air duct installed between the air conduits, and a semi-circle shaped right and left gas reflux stop plate mounted in the air duct flow passage through a pivot shaft in a mode of being perpendicular to the air duct cross-section, wherein a location stop ring for preventing the gas reflux stop plate to open towards the air intake side is provided in the air duct flow passage at the windward side of the pivot shaft, and a wedge spacing member with an included angle larger than 30 degrees for restricting the opening degree of the gas reflux stop plate is provided in the air duct flow passage at the other side relative to the windward side of the pivot shaft. The utility model effectively controls the airflow reversal, to prevent the accident enlargement and reduce the economic loss, so as to main efficient safety production in mines.
Description
Technical field
The utility model relates to a kind of device that is used for Safety of Coal Mine Production, relates to a kind of device that is used to prevent the gas adverse current specifically.
Background technology
Along with the pit mining degree of depth increases, the exploitation scale constantly enlarges, gas emission is in continuous increase, mine ventilation system becomes increasingly complex, especially in the mine that adopts forced ventilation, in case can cause distinguished and admirable reverse when in driving, running into the outstanding or gas explosion of coal and gas, make the coal dust of a large amount of high concentrations and toxic and harmful enter into fresh distinguished and admirable or other work plane through blower fan with wind along air duct, cause accident to enlarge.Therefore set up as early as possible safe and reliable ventilation system, effectively improve the anti-prominent ability of mine protrusion-dispelling, ensure safety in production to become extremely urgent urgent problem.
Summary of the invention
The purpose of this utility model provides a kind of device that is used to prevent the gas adverse current that can effectively control distinguished and admirable reverse in order to solve existing problem in the above-mentioned prior art just.
The purpose of this utility model can realize by following measure:
Of the present utility modelly be used to prevent that the device of gas adverse current from comprising the air duct that is installed between ventilating duct, with perpendicular to the mode of air duct cross section by being pivotally mounted in the air duct runner and being that plate is ended to the semicircle left and right sides gas adverse current that rotate both sides respectively in the axle center with the pivot; In the air duct runner of pivot windward side, be provided with and prevent that the gas adverse current from ending the position-arresting ring that plate is opened to the inlet side, in air duct runner, be provided with respect to the opposite side of pivot windward side an angle greater than 30 ° be used to limit the spacing member of wedge shape that the gas adverse current is ended the plate open degree.
Device of the present utility model is to utilize the principle of pressure reduction to prevent the gas adverse current, in entering air duct distinguished and admirable just often, the gas adverse current end plate sentence open mode (be left and right sides gas adverse current end plate under the position-limiting action of the spacing member of wedge shape respectively to open backward along the flow direction of air intake less than the open degree of 75 ° of angles), in case the blast of the adverse current wind in the tunnel is during greater than the blast of normal air intake when gas explosion (run into that coal and gas are given prominence to or caused distinguished and admirable reverse), the gas adverse current end plate then can be under the effect of pressure reduction be that rotate to both sides respectively in the axle center with the pivot, enter closed condition until contacting, make the distinguished and admirable interruption in the tunnel with position-arresting ring.
The beneficial effects of the utility model are as follows:
The utility model can effectively be controlled distinguished and admirable reverse, has stopped accident expansion, has reduced economic loss, makes mine can keep highly effective and safe production.
Description of drawings
Fig. 1 uses novel schematic diagram for pump.
Fig. 2 is the A-A sectional view of Fig. 1
Fig. 3 is that the B of Fig. 1 is to view (remove air duct after view).
Fig. 4 is the vertical view (view behind the removal air duct) of Fig. 1.
1 is air duct among the figure, and 2 end the plate pivot for the gas adverse current, and 3 for to be used to connect the fixed hub that the gas adverse current is ended plate and pivot, and 4 is position-arresting ring, and 5 end plate for the gas adverse current.
The specific embodiment
The utility model is further described below with reference to embodiment (accompanying drawing):
As shown in Figure 1, of the present utility modelly be used to prevent that the device of gas adverse current from comprising the air duct 1 that is installed between ventilating duct, be installed in the air duct runner by pivot 2 and be that plate 5 is ended to the semicircle left and right sides gas adverse current that rotate both sides respectively in the axle center with the pivot in mode perpendicular to the air duct cross section; In the air duct runner of pivot windward side, be provided with and prevent that the gas adverse current from ending the position-arresting ring 4 that plate is opened to the inlet side, in air duct runner, be provided with respect to the opposite side of pivot windward side an angle greater than 30 ° be used to limit the spacing member 6 of wedge shape that the gas adverse current is ended the plate open degree.
Claims (1)
1. device that is used to prevent the gas adverse current, it is characterized in that: this device comprises the air duct that is installed between ventilating duct, with perpendicular to the mode of air duct cross section by being pivotally mounted in the air duct runner and being that plate is ended to the semicircle left and right sides gas adverse current that rotate both sides respectively in the axle center with the pivot; In the air duct runner of pivot windward side, be provided with and prevent that the gas adverse current from ending the position-arresting ring that plate is opened to the inlet side, in air duct runner, be provided with respect to the opposite side of pivot windward side an angle greater than 30 ° be used to limit the spacing member of wedge shape that the gas adverse current is ended the plate open degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200927924U CN201507322U (en) | 2009-09-03 | 2009-09-03 | Device for preventing gas reflux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200927924U CN201507322U (en) | 2009-09-03 | 2009-09-03 | Device for preventing gas reflux |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201507322U true CN201507322U (en) | 2010-06-16 |
Family
ID=42468451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200927924U Expired - Fee Related CN201507322U (en) | 2009-09-03 | 2009-09-03 | Device for preventing gas reflux |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201507322U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900453A (en) * | 2012-10-18 | 2013-01-30 | 山西潞安华信科技发展有限公司 | Mining gas backflow-preventing wind cone device |
| CN106437814A (en) * | 2016-10-21 | 2017-02-22 | 湖南省有色金属中等专业学校 | Pulsation air flow generator |
| CN108625891A (en) * | 2018-07-12 | 2018-10-09 | 贵州盘江精煤股份有限公司 | A kind of air duct anti-reverse-rotation device for underground coal mine |
| CN111734471A (en) * | 2020-07-03 | 2020-10-02 | 贵州大学 | Novel air duct countercurrent-preventing device |
| CN111828745A (en) * | 2020-07-28 | 2020-10-27 | 贵州大学 | Self-adaptive adjustable-gradient gas countercurrent-preventing pipeline structure |
-
2009
- 2009-09-03 CN CN2009200927924U patent/CN201507322U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900453A (en) * | 2012-10-18 | 2013-01-30 | 山西潞安华信科技发展有限公司 | Mining gas backflow-preventing wind cone device |
| CN106437814A (en) * | 2016-10-21 | 2017-02-22 | 湖南省有色金属中等专业学校 | Pulsation air flow generator |
| CN106437814B (en) * | 2016-10-21 | 2019-02-15 | 湖南省有色金属中等专业学校 | A kind of fluctuating wind flow generating apparatus |
| CN108625891A (en) * | 2018-07-12 | 2018-10-09 | 贵州盘江精煤股份有限公司 | A kind of air duct anti-reverse-rotation device for underground coal mine |
| CN111734471A (en) * | 2020-07-03 | 2020-10-02 | 贵州大学 | Novel air duct countercurrent-preventing device |
| CN111828745A (en) * | 2020-07-28 | 2020-10-27 | 贵州大学 | Self-adaptive adjustable-gradient gas countercurrent-preventing pipeline structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20110903 |