CN218265990U - Positive pressure flexible skeleton air control duct for fully mechanized excavation face of coal mine - Google Patents
Positive pressure flexible skeleton air control duct for fully mechanized excavation face of coal mine Download PDFInfo
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- CN218265990U CN218265990U CN202223023598.5U CN202223023598U CN218265990U CN 218265990 U CN218265990 U CN 218265990U CN 202223023598 U CN202223023598 U CN 202223023598U CN 218265990 U CN218265990 U CN 218265990U
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Abstract
The utility model relates to a positive pressure flexible skeleton air control duct for a fully mechanized excavation face of a coal mine, which comprises a flexible duct (5) and an annular skeleton (6); the utility model discloses can guarantee that the malleation dryer reduces the forced air amount of wind of malleation wind-cone to comprehensive digging face first department when head-on air feed, guarantee that the negative pressure wind-cone can effectively inhale dust remover with the dusty air current that comprehensive digging face first produced inside, form annular wind curtain in dust remover box the place ahead simultaneously, guarantee that the dust remover can handle dusty air current as far as possible, block dusty air current and move backward, ensure the air quality at tunnel rear.
Description
Technical Field
The utility model relates to a colliery dryer technical field specifically is a flexible skeleton accuse wind dryer of face malleation is dug to comprehensive in colliery.
Background
Coal mine dust hazard is one of five disasters of a mine, and dust can be generated in almost all operations in the coal production process. The fully mechanized excavation face is one of the most serious areas polluted by dust in the coal mine, and the dust concentration of the fully mechanized excavation face is as high as 300-500 mg/m in the operation process 3 Individual areas even up to 2000mg/m 3 Far exceeding the safe production dust concentration specified by coal mine safety regulations. The high-concentration dust can not only pollute the operation environment and damage field precision equipment, but also threaten the occupational health of field operation personnel, has explosiveness and causes great threat to underground safety production. The traditional dust removal measures of the fully mechanized excavation face mainly comprise technical means such as ventilation dust removal, spraying dust removal inside and outside the tunneling machine, wet dust remover and the like, wherein ventilation dust removal is used as the most basic means for tunnel dust removal and is used for removing dust in tunnelsThe generated wind current can blow away the suspended dust on the tunneling working face away from the head, but a serious secondary dust raising phenomenon exists, and the dirty wind can pollute the air in the rear lane of the fully mechanized tunneling working face.
The fully-mechanized excavation face positive-pressure ventilation dust removal is usually matched with a wet dust remover for dust removal, dust is sucked into the dust remover through a negative-pressure fan and a negative-pressure air duct for centralized processing, however, positive-pressure ventilation air volume is larger than negative-pressure air suction volume, the dust suction effect of the dust remover is reduced due to the influence of the shape of the fully-mechanized excavation face roadway, the processing sewage air volume is reduced, a large amount of dust-containing sewage air is transported to the rear of the roadway, a large amount of dust-containing air flow exists in the rear roadway, and the occupational health of field workers is threatened.
In order to solve these problems, although the coanda wind tunnel of chinese patent No. CN103912300B can also form an air curtain, but the air flow is not continuous due to the lateral air outlets arranged in a spiral shape, when the air flow is ejected, a plurality of air flows from top to bottom and from left to right will form disturbances, which affect the effect of the air curtain, and at the same time, the wind boards inside the wind tunnel for controlling the air flow have a good appearance, but the wind tunnel is many hundreds of meters long and all the wind tunnels are flexible wind tunnels supported by an annular framework.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a flexible skeleton accuse wind dryer of face malleation is dug to comprehensive in colliery combines reduces the malleation dryer to synthesizing the pressure wind amount of wind of digging face head department when can guaranteeing the head-on air feed, guarantee that the negative pressure dryer can effectively inhale the dust remover with the dusty air current of synthesizing the head-on production of digging face, form annular air curtain one in dust remover box the place ahead simultaneously, guarantee that the dust remover can handle dusty air current as far as possible, block dusty air current and move backward, the air quality at guarantee tunnel rear.
In order to achieve the above object, the utility model discloses a following technical scheme realizes: a positive-pressure flexible skeleton air control duct for a fully mechanized excavation face of a coal mine comprises a flexible duct and annular skeletons, wherein the annular skeletons are arranged in the flexible duct, the annular skeletons play a role in supporting the flexible duct, and an air outlet strip slit is formed in the surface of the flexible duct between the two annular skeletons; the two annular frameworks ensure the stable shape of the air outlet strip seam, so that the air outlet direction is more stable, and the poor dust insulation effect of the air curtain caused by the uneven air outlet direction is prevented;
the surface of the flexible wind tube above the wind outlet strip seams is fixedly connected with wind tube cloth through a fixing belt, the fixing belt can ensure that the opened wind curtain is stable in a closed state, zippers are sewn at the corresponding positions of the left side, the right side and the lower side of the wind tube cloth and the outer wall surface of the flexible wind tube, the wind tube cloth is turned over downwards and then completely covers all the wind outlet strip seams and is sealed by the zippers, the wind tube cloth and the flexible wind tube are closed by the zippers and the fixing belt to form good sealing performance, the flexible wind tube cloth can be ensured not to leak air when the wind tube cloth is closed, and more than two pull rings are arranged on the surface of the upper part of the flexible wind tube and are used for hanging and connecting the positive-pressure wind tube; after being opened, the air duct cloth is placed on one side of the flexible air duct without the air outlet strip seam, so that the operation is convenient, and the air outlet cannot be blocked and the direction of the air curtain cannot be changed; when the air duct cloth is closed, the side wall of the air duct is in a closed state, and positive pressure air flow only flows along the radial direction of the air duct; when the dryer cloth was opened, the dryer lateral wall was the open mode, and positive pressure air current flows along dryer radial direction and axial air-out strip seam direction simultaneously, and its axial air-out flows out behind the dryer along tunnel wall annular flow to form the annular air curtain, so the operation has guaranteed that the air curtain can not produce a large amount of air leakages again when stably producing, has guaranteed the air supply volume of headwork head-on.
As a further improvement of the utility model, the horizontal expansion shape of the air outlet strip seam is a rectangle, and the size of the air outlet strip seam is 10 multiplied by 80cm.
As a further improvement of the utility model, the air outlet strip seam is spaced by 10cm.
As the utility model discloses a further improvement scheme, dryer cloth and flexible dryer be coating cloth, and be the rectangle at upper end right angle lower extreme fillet after dryer water distribution is opened out flatly.
As a further improvement of the utility model, the upper part of the flexible wind tube is sewed with a bandage for fixing the wind tube cloth.
Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage: compared with the conventional dust removal mode, the utility model has the advantages that the side wall is provided with the plurality of air outlet strip seams to ensure that part of positive pressure air flow axially flows to the tunnel, so that positive pressure air and negative pressure air draft air quantity are balanced, the air flow forms a stable loop, a large amount of dust-containing air flow generated in the head-on process can be mostly sucked into the dust remover, and the dust collection efficiency is improved; the utility model has the same effect with the normal positive pressure wind tube when not opened, and does not need to change different wind tubes along with the tunneling process, thereby having simpler operation; the stable air curtain can be formed by the air outlet strip seams, so that the dust insulation effect of the air curtain is ensured; the positive pressure air flow guided by the air curtain directly comes from the compressed air cylinder, and an air curtain generating device is not required to be additionally arranged, so that the use amount of equipment is reduced, and the use cost is reduced; when the dust remover moves to the front of the tunneling surface along with the tunneling progress, only the zipper needs to be closed and the front side air cylinder needs to be opened, so that the operation is simpler and more convenient.
Drawings
Fig. 1 shows a schematic structural view of the present invention in a closed state;
fig. 2 shows the structure diagram of the utility model in the open state;
fig. 3 shows a plan expanded view of the present invention;
fig. 4 shows a schematic view of the installation position of the present invention.
In the figure: 1. air outlet strip seam, 2, air duct cloth, 3, a zipper, 4, a fixing band, 5, a flexible air duct, 6, an annular framework, 7, a pull ring, 8, a dust remover, 9, a dust removing fan, 10, a negative pressure dust hood, 11, a head-on position, 12 and a dust remover inlet.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 3, the positive pressure flexible skeleton air control duct for coal mine fully mechanized excavation face comprises an air outlet strip seam 1, duct cloth 2, a zipper 3, a fixing belt 4, a flexible duct 5, annular skeletons 6, a pull ring 7, a dust remover 8, a dust removing fan 9, a negative pressure dust hood 10, a head-on part 11 and a dust remover inlet 12, wherein the annular skeleton 6 is arranged in the flexible duct 5, the annular skeleton 6 plays a role of supporting the flexible duct 5, and the air outlet strip seam 1 is arranged on the surface of the flexible duct 5 between the two annular skeletons 6; the two annular frameworks 6 ensure the stable shape of the air outlet strip seam 1, so that the air outlet direction is more stable, and the poor dust insulation effect of the air curtain caused by uneven air outlet direction is prevented;
as shown in fig. 1 to 3, the surface of the flexible wind tube 5 above the wind outlet strip seam 1 is fixedly connected with the wind tube cloth 2 through the fixing band 4, the fixing band 4 can ensure the stability of the opened wind curtain in the closed state, the zippers 3 are sewn at the positions corresponding to the left side, the right side and the lower side of the wind tube cloth 2 and the outer wall surface of the flexible wind tube 5, the wind tube cloth 2 is turned down and then completely covers all the wind outlet strip seams 1 and is sealed by the zippers 3, the good sealing performance is achieved between the wind tube cloth 2 and the flexible wind tube 5 after being closed by the zippers 3 and the fixing band 4, the wind leakage of the flexible wind tube can be prevented when the wind tube cloth is closed, and the upper surface of the flexible wind tube 5 is provided with more than two pull rings 7 for hanging and connecting the positive pressure wind tube; the air duct cloth 2 is placed on one side of the flexible air duct 5 without the air outlet strip seam 1 after being opened, so that the operation is convenient, and the air outlet cannot be blocked and the direction of the air curtain cannot be changed; when the air duct cloth 2 is closed, the side wall of the air duct is in a closed state, and positive pressure air flow only flows along the radial direction of the air duct; when the dryer cloth 2 was opened, the dryer lateral wall was the open mode, and positive pressure air current flows along dryer radial direction and axial air-out 1 direction of strip seam simultaneously, and its axial air-out flows out and flows along tunnel wall annular behind the dryer to form annular air curtain, so the operation has guaranteed that the air curtain can not produce a large amount of air leakages again when stable production, has guaranteed the air feed volume of headwork head-on 11.
In order to form the air curtain better, as a further improvement of the utility model, the horizontal development shape of the air outlet strip seam 1 is a rectangle, and the size of the air outlet strip seam is 10 multiplied by 80cm.
In order to further strengthen the air curtain effect of air-out strip seam 1, form a plurality of spaced air curtains, as the utility model discloses a further improvement scheme, air strip seam 1 between the interval be 10cm.
In order to guarantee the sealed effect of dryer cloth 2 and flexible dryer 5 and be convenient for 3 closures of zip fastener, conduct the utility model discloses a further improvement scheme, dryer cloth 2 be coating cloth with flexible dryer 5, and be the rectangle at upper end right angle lower extreme fillet after 2 horizontal expansions of dryer cloth.
For further fixed dryer cloth 2, prevent that its unexpected landing from sheltering from air-out strip seam 1, as the utility model discloses a further improvement scheme, 5 upper portions of flexible dryer sew up the bandage of fixed dryer cloth 2.
When the wind control barrel is used, the coal mine fully-mechanized excavation face positive pressure flexible skeleton wind control barrel is installed and is connected with the wind barrels in front and back, equipment can be put into use, and a plurality of coal mine fully-mechanized excavation face positive pressure flexible skeleton wind control barrels can be connected in series at certain intervals in use, so that footage is facilitated.
The utility model discloses when using, concrete work as follows:
as shown in fig. 4, the left end of the flexible wind tube 5 is connected to the original press-in wind tube, the multiple wind tubes are connected until the right end thereof extends to the head-on position 11 of the working face, and the air outlet side (i.e. the side of the wind tube where the air outlet strip slit 1 is arranged) of the multiple wind tubes is back to the wall surface of the roadway; in the air supply process, only a single air cylinder cloth 2 is opened, the opening position is 0.5-2 m in front of the horizontal axis of the dust remover inlet 12, when the dust remover 8 moves to the front of the working face along with the belt conveyor, the rear air cylinder cloth 2 is closed, the air cylinder cloth 2 at the corresponding position is opened, the air curtain is ensured to be always kept in front of the dust remover inlet, the dust-containing air flow is ensured not to move to the rear of the roadway, and the blocked dirty air is sucked into the box body of the dust remover 8 due to the negative pressure action of the dust removing fan 9 and the negative pressure dust hood 10 in the process of returning to the head-on 11, so that the dust collection efficiency and the dust removal efficiency are improved, the dust emission concentration of the head-on 11 of the driving face is reduced, and the occupational health of field workers is ensured.
Claims (5)
1. A positive pressure flexible skeleton air control duct for a coal mine fully-mechanized excavation face comprises a flexible duct (5) and annular skeletons (6), wherein the annular skeletons (6) are arranged inside the flexible duct (5), and is characterized in that an air outlet strip seam (1) is formed on the surface of the flexible duct (5) between the two annular skeletons (6);
the surface of a flexible air duct (5) above an air outlet strip seam (1) is fixedly connected with air duct cloth (2) through a fixing band (4), zippers (3) are sewn at corresponding positions of the left side wall, the right side wall and the lower side wall of the air duct cloth (2) and the outer wall surface of the flexible air duct (5), the air duct cloth (2) is turned downwards to completely cover all air outlet strip seams (1) and is sealed by the zippers (3), and more than two pull rings (7) are arranged on the surface of the upper portion of the flexible air duct (5).
2. The positive pressure flexible skeleton air control duct for the fully mechanized excavation face of a coal mine as claimed in claim 1, wherein the horizontal unfolded shape of the air outlet strip slit (1) is a rectangle, and the size of the air outlet strip slit is 10 x 80cm.
3. The positive-pressure flexible skeleton air control duct for the fully mechanized excavation face of the coal mine according to claim 1 or 2, characterized in that the spacing between the air strip seams (1) is 10cm.
4. The positive-pressure flexible skeleton air control duct for the fully mechanized excavation face of the coal mine as claimed in claim 1, wherein the duct cloth (2) and the flexible duct (5) are both coated cloth, and the duct cloth (2) is horizontally unfolded to be rectangular with a right angle at the upper end and a round corner at the lower end.
5. The coal mine fully-mechanized excavating face positive pressure flexible skeleton air control duct according to claim 1 or 4, characterized in that the upper part of the flexible duct (5) is sewed with a binding belt for fixing the duct cloth (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223023598.5U CN218265990U (en) | 2022-11-14 | 2022-11-14 | Positive pressure flexible skeleton air control duct for fully mechanized excavation face of coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223023598.5U CN218265990U (en) | 2022-11-14 | 2022-11-14 | Positive pressure flexible skeleton air control duct for fully mechanized excavation face of coal mine |
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| Publication Number | Publication Date |
|---|---|
| CN218265990U true CN218265990U (en) | 2023-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223023598.5U Active CN218265990U (en) | 2022-11-14 | 2022-11-14 | Positive pressure flexible skeleton air control duct for fully mechanized excavation face of coal mine |
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|---|---|
| CN (1) | CN218265990U (en) |
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2022
- 2022-11-14 CN CN202223023598.5U patent/CN218265990U/en active Active
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