CN111878148A - Gate plate type air door for main ventilation system of coal mine - Google Patents
Gate plate type air door for main ventilation system of coal mine Download PDFInfo
- Publication number
- CN111878148A CN111878148A CN202010806994.1A CN202010806994A CN111878148A CN 111878148 A CN111878148 A CN 111878148A CN 202010806994 A CN202010806994 A CN 202010806994A CN 111878148 A CN111878148 A CN 111878148A
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- ventilation system
- main ventilation
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- 238000009423 ventilation Methods 0.000 title claims abstract description 48
- 239000003245 coal Substances 0.000 title claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 12
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/10—Air doors
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ventilation (AREA)
Abstract
The invention provides a gate plate type air door for a main ventilation system of a coal mine, which comprises a door frame, a door plate and a lifting device. The door frame includes two montants, two montant parallel arrangement, two montants are used for setting up respectively vertically in the both sides in wind channel and be connected with the wind channel respectively, the both sides of door plant respectively with two montant sliding connection, it is used for driving the door plant along the extending direction displacement of montant to rise the device, the wind channel upper end is equipped with the perforating hole that supplies the door plant to come in and go out, can separate a grade wind channel when the door plant is in the primary importance, in order to close the wind channel, the door plant is located the wind channel top when being in the second place. So set up, the simple structure of flashboard formula air door for the main ventilation system of coal mine, processing is saved time, convenient to use to flashboard formula air door need not complicated mechanism and spare part, and holistic price is cheaper. And the flashboard type air door fully utilizes the idle space above the air channel, reduces the installation and arrangement space, reduces the installation steps, reduces the installation difficulty and improves the installation efficiency.
Description
Technical Field
The invention relates to the technical field of mine air doors, in particular to a gate plate type air door for a main ventilation system of a coal mine.
Background
The main ventilator for mining has an important role in the safety production of coal mines and has the important functions of conveying fresh air underground, discharging dirty air, dust and harmful gases outwards and ensuring the safety production. Referring to fig. 11, the national coal mine safety regulations require that each main mine ventilator be used and standby, that is, two fans are arranged in parallel in a Y-shaped air duct in a ventilation system, one fan is operated and the other fan is standby. In a standby-fan mode of operation, two main fans are provided at the outlets of the two air ducts, respectively, to draw air from the mine. In the prior art, a butterfly valve is generally arranged in an air duct and in front of a fan to serve as an inlet air door, so that closed switching is realized. When the inlet air door is in failure in the operation process, the main ventilator must be stopped to remove the failure. Because another main ventilation machine will begin to operate this moment, for the negative pressure that prevents the main ventilation machine production of function from causing the safety problem, will set up the maintenance air door in the wind channel usually, overhaul the upstream position of air door setting at the entry, when overhauing the entry air door, will overhaul the air door earlier and close to stop the influence of negative pressure, guarantee maintainer's safety. The access damper in the prior art is usually a louvered damper, but the louvered damper is complex in structure and high in manufacturing cost. Therefore, how to solve the problems of complex structure and high cost of the repair damper in the prior art is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a gate plate type air door for a main coal mine ventilation system, which is simple in structure, convenient to operate and low in price.
In order to solve the above problems, the present invention provides a gate plate type air door for a main ventilation system of a coal mine, comprising: door frame, door plant and play to rise the device, the door frame includes two montants, two montants parallel arrangement, two the montant be used for respectively vertically set up in the both sides in wind channel and respectively with the wind channel is connected, two be equipped with guide structure on the relative face of montant respectively, the both sides of door plant respectively with two guide structure sliding fit, it is used for the drive to rise the device the door plant is followed the extending direction displacement of montant, the wind channel upper end is equipped with the confession the perforating hole that the door plant came in and go out, can separate the shelves when the door plant is in the primary importance the wind channel, in order to close the wind channel, the door plant is located when being in the secondary importance the wind channel top, in order to open the.
Preferably, the lower ends of the two vertical rods are respectively connected with the side walls on two sides of the air duct, and at least part of the lower ends of the two vertical rods are located inside the air duct.
Preferably, the two vertical rods are respectively integrated with the side walls of the two sides of the air duct.
Preferably, the guide structure is a guide groove extending along the axial direction of the vertical rod, and two sides of the door panel respectively extend into the two guide grooves in a sliding manner.
Preferably, the two guide grooves are at least provided with a sealing strip used for sealing a joint surface between the door plate and the guide groove on a groove wall close to one side of the main ventilator, and the extending direction of the sealing strip is the same as that of the guide groove.
Preferably, the through hole is provided with a sealing strip for sealing a joint surface between the through hole and the door panel at least on an inner wall of the through hole close to one side of the main ventilator, and the sealing strip extends along the width direction of the door panel.
Preferably, the bottom of the air duct is provided with a clamping groove for the lower end of the door panel to extend into, the inner wall of the clamping groove at least close to one side of the main ventilator is provided with a sealing strip for sealing a joint surface between the clamping groove and the door panel, and the sealing strip extends along the width direction of the door panel.
Preferably, the lifting device comprises a winch and a pulley mechanism, and the winch drives the door panel to move through the pulley mechanism.
Preferably, the pulley mechanism comprises a movable pulley arranged on the door panel and a fixed pulley arranged on the door frame, and a steel wire rope on the winch sequentially passes through the fixed pulley and the movable pulley and is fixedly connected with the door frame.
Preferably, the door further comprises a first travel switch for limiting the ascending height of the door panel and a second travel switch for limiting the descending height of the door panel.
The invention provides a gate plate type air door for a main ventilation system of a coal mine, which comprises a door frame, a door plate and a lifting device. The door frame includes two montants, two montant parallel arrangement, two montants are used for setting up respectively vertically in the both sides in wind channel and be connected with the wind channel respectively, the both sides of door plant respectively with two montant sliding connection, it is used for driving the door plant along the extending direction displacement of montant to rise the device, the wind channel upper end is equipped with the perforating hole that supplies the door plant to come in and go out, can separate a grade wind channel when the door plant is in the primary importance, in order to close the wind channel, the door plant is located the wind channel top when being in the second place.
During the use, install the upper reaches position at the entry air door with main flashboard formula air door for the ventilation system of coal mine, under normal conditions, the door plant of main flashboard formula air door for the ventilation system of coal mine is in the second position, and the wind in the wind channel can pass through main flashboard formula air door for the ventilation system of coal mine this moment, and the switching in wind channel still is controlled by the entry air door. When the inlet air door breaks down and needs to be overhauled, the door plate of the flashboard type air door for the main coal mine ventilation system moves downwards to the first position to close the air channel on the side where the inlet air door breaks down, and negative pressure generated by the main ventilator which normally works in the other air channel cannot influence the air channel on the side where the inlet air door breaks down due to the partition of the flashboard type air door for the main coal mine ventilation system, so that the safety of maintainers is guaranteed. So set up, the simple structure of flashboard formula air door for the main ventilation system of coal mine, processing save time, convenient to use to flashboard formula air door for the main ventilation system of coal mine need not complicated mechanism and spare part, and holistic price is cheaper. And the flashboard type air door for the main ventilation system of the coal mine fully utilizes the idle space above the air channel, reduces the installation and arrangement space, reduces the installation steps, reduces the installation difficulty and improves the installation efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a first embodiment of a damper door for a main ventilation system of a coal mine (with a door panel in a first position) according to the present invention;
FIG. 2 is a schematic view of the damper door of the main ventilation system for a coal mine of FIG. 1 in a second position;
FIG. 3 is a side schematic view of the damper door for the main ventilation system of the coal mine of FIG. 2;
FIG. 4 is an enlarged view of a portion I of FIG. 3;
FIG. 5 is an enlarged view of a portion II of FIG. 3;
FIG. 6 is a schematic structural view of a damper plate type damper for a main ventilation system of a coal mine according to a second embodiment of the present invention;
FIG. 7 is a schematic structural view of a damper plate type damper for a main ventilation system of a coal mine according to a third embodiment of the present invention;
FIG. 8 is a schematic view of a damper plate type damper for a main ventilation system of a coal mine according to an embodiment of the present invention installed in an air duct;
FIG. 9 is an enlarged view of a portion I of FIG. 8;
FIG. 10 is an enlarged view of a portion II of FIG. 8;
fig. 11 is a schematic structural diagram of a prior art air duct.
In fig. 1-11:
1. a main ventilator; 2. an air duct; 3. a door panel; 4. a vertical rod; 5. a cross bar; 6. a top wall; 7. a bottom wall; 8. a guide groove; 9. a sealing strip; 10. a through hole; 11. a card slot; 12. a winch; 13. a wire rope; 14. a fixed pulley; 15. a movable pulley; 16. a first travel switch; 17. a second travel switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the invention recited in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
Referring to fig. 1 to 11, an embodiment of the present invention provides a damper for a main ventilation system of a coal mine, including: door frame, door plant 3 and play to rise the device. The door frame includes two montants 4, two montants 4 parallel arrangement, and two montants 4 are used for setting up respectively vertically in the both sides of wind channel 2 and are connected with wind channel 2 respectively. Optionally, the door frame still includes horizontal pole 5, and horizontal pole 5 sets up between two montants 4, and horizontal pole 5 one end is connected with one in two montants 4, and the other end is connected with another in two montants 4 to improve the holistic rigidity of door frame. The opposite surfaces of the two vertical rods 4 are respectively provided with a guide structure, and the two sides of the door panel 3 are respectively in sliding fit with the two guide structures, so that the door panel 3 can move along the two vertical rods 4. The lifting device is used for driving the door panel 3 to move along the extending direction of the vertical rod 4, and the upper end of the air duct 2 is provided with a through hole 10 for the door panel 3 to go in and out. For example, for a duct 2 having a rectangular cross-section, the through-holes 10 are provided in the top wall 6 thereof. The door panel 3 can block the air duct 2 when in the first position so as to close the air duct 2; the door panel 3 is positioned above the air chute 2 when in the second position to open the air chute 2. Referring to fig. 1 and 2, the cross-section of the air duct 2 may be rectangular (with the door panel 3 in the second position), or, as shown in fig. 6 and 7, the cross-section of the air duct 2 may be circular (with the door panel 3 in the second position), although the cross-section of the air duct 2 may have other shapes. As shown in fig. 1 and 2, the rectangular door panel 3 may be used for the air duct 2 with a rectangular cross section, and as shown in fig. 6, the rectangular door panel 3 may also be used for the air duct 2 with a circular or other cross section, and the contour of the door panel 3 only needs to be larger than the inner contour of the air duct 2. Referring to fig. 7, for the air duct 2 with a circular cross section, an arc-shaped plate matched with the circular air duct 2 can be arranged below the rectangular door panel 3.
During the use, install the upper reaches position at the entry air door with flashboard formula air door for the main ventilation system of coal mine, under the normal condition, door plant 3 of flashboard formula air door for the main ventilation system of coal mine is in the second position, and the wind in wind channel 2 can pass through flashboard formula air door for the main ventilation system of coal mine this moment, and the switching in wind channel 2 still is controlled by the entry air door. When the inlet air door breaks down and needs to be overhauled, the door plate of the flashboard type air door for the main coal mine ventilation system moves downwards to the first position to close the air duct 2 on one side where the inlet air door breaks down, and negative pressure generated by the main ventilator 1 which normally works in the other air duct 2 cannot influence the air duct 2 on one side where the inlet air door breaks down due to the partition of the flashboard type air door for the main coal mine ventilation system, so that the safety of maintainers is guaranteed. So set up, the simple structure of flashboard formula air door for the main ventilation system of coal mine, processing save time, convenient to use to flashboard formula air door for the main ventilation system of coal mine need not complicated mechanism and spare part, and holistic price is cheaper. In addition, the flashboard type air door for the main ventilation system of the coal mine fully utilizes the idle space above the air channel 2, reduces the installation and arrangement space, reduces the installation steps, reduces the installation difficulty and improves the installation efficiency.
In some embodiments, the lower ends of the two vertical rods 4 are respectively connected to the side walls of the two sides of the air duct 2, and the lower ends of the two vertical rods 4 are at least partially located inside the air duct 2. That is, the lower end portions of the two vertical rods 4 may completely extend into the air duct 2 to be connected to the inner walls of both sides of the air duct 2, respectively. However, in order to prevent the vertical rods 4 from protruding out of the inner wall of the air duct 2 and blocking the flow of the air current, the two vertical rods 4 can be respectively embedded into the inner walls of the two sides of the air duct 2, so that the side surfaces of the vertical rods 4 are flush with the inner walls, and thus, only one side surface of each of the two vertical rods 4 is located in the air duct 2, and the blocking of the air current can be reduced. Optionally, the two vertical rods 4 are respectively integrated with the side walls of the two sides of the air duct 2, for example, the air duct 2 is usually made by cement pouring, and the two vertical rods 4 of the door frame can be embedded in the cement or the steel structure of the air duct 2 to form an integrated structure with the air duct 2. So set up, the structural strength of door frame is higher, and the rigidity is better, and is not fragile, can improve the life of vertical air door.
Referring to fig. 9-10, in some embodiments, the guiding structure is a guiding groove 8 extending along the axial direction of the vertical rod 4, and both sides of the door panel 3 slidably extend into the two guiding grooves 8. Alternatively, the two walls of the guide groove 8 can be formed by the two lateral faces of the angle steel extending axially along the vertical rod 4. As shown in fig. 9 to 10, optionally, the two guide grooves 8 are each provided with a sealing strip 9 for sealing the joint surface between the door panel 3 and the guide groove 8 at least on the groove wall near the side of the main ventilator 1, and the extending direction of the sealing strip 9 is the same as the extending direction of the guide groove 8. So set up, can improve the sealing performance of vertical air door.
Referring to fig. 3 to 4, in some embodiments, the through hole 10 is provided with a sealing strip 9 for sealing a joint surface between the through hole 10 and the door panel 3 at least on an inner wall of a side close to the main ventilator 1, and the sealing strip 9 extends in a width direction of the door panel 3. By providing the weather strip 9 between the through hole 10 and the door panel 3, leakage in the gap between the through hole 10 and the door panel 3 can be prevented, and the sealing performance of the vertical damper can be improved.
Referring to fig. 3 and 5, in some embodiments, the bottom of the air duct 2 is provided with a slot 11 for the lower end of the door panel 3 to extend into, for example, for the air duct 2 with a rectangular cross section, the slot 11 is provided on the bottom wall 7. The inner wall of the clamping groove 11 at least close to one side of the main ventilator 1 is provided with a sealing strip 9 for sealing a joint surface between the clamping groove 11 and the door plate 3, and the sealing strip 9 extends along the width direction of the door plate 3. When door plant 3 was in the second position, its lower extreme was arranged in draw-in groove 11, and sealing strip 9 on the draw-in groove 11 lateral wall can prevent that the gap between draw-in groove 11 and the door plant 3 from producing the leakage to improve the sealing performance of vertical air door.
Referring to fig. 1 and 2, in some embodiments, the lifting device includes a winch 12 and a pulley mechanism, and the winch 12 drives the door panel 3 to displace through the pulley mechanism. As shown in fig. 2, the pulley mechanism optionally includes a movable pulley 15 disposed on the door panel 3 and a fixed pulley 14 disposed on the door frame, and the cable 13 of the winch 12 passes through the fixed pulley 14 and the movable pulley 15 in sequence to be fixedly connected with the door frame. When the door panel 3 needs to be lifted, the winch 12 operates to tighten the steel wire rope 13, the steel wire rope 13 lifts the movable pulley 15, and the movable pulley 15 lifts the door panel 3; when the door panel 3 needs to be lowered, the winch 12 runs the anti-loosening steel wire rope 13, and the door panel 3 falls under the action of gravity.
In order to stop the door panel 3 at the correct position for each of the ascent and descent, referring to fig. 1 and 2, in some embodiments, the damper door for a main coal mine ventilation system further includes a first stroke switch 16 for limiting the ascent height of the door panel 3 and a second stroke switch 17 for limiting the descent height of the door panel 3. The first travel switch 16 and the second travel switch 17 are respectively arranged at preset positions, when the door panel 3 rises to trigger the first travel switch 16, the first travel switch 16 controls the winch 12 to stop, and the door panel 3 does not rise any more; when the door panel 3 descends to trigger the second travel switch 17, the second travel switch 17 controls the winch 12 to stop, and the door panel 3 does not descend any more. For example, the first travel switch 16 may be provided on the vertical bar 4, the second travel switch 17 may be provided on the top wall 6 of the wind tunnel 2, and the door panel 3 may be provided with a first stopper and a second stopper for triggering the first travel switch 16 and the second travel switch 17.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a main ventilation system of coal mine is with flashboard formula air door which characterized in that includes: the door frame comprises two vertical rods (4), the two vertical rods (4) are arranged in parallel, the two vertical rods (4) are respectively vertically arranged at two sides of the air duct (2) and are respectively connected with the air duct (2), guide structures are respectively arranged on opposite surfaces of the two vertical rods (4), the two sides of the door panel (3) are respectively in sliding fit with the two guide structures, the lifting device is used for driving the door panel (3) to move along the extending direction of the vertical rod (4), the upper end of the air duct (2) is provided with a through hole (10) for the door panel (3) to go in and out, the door panel (3) can separate the air duct (2) when in the first position, so as to close the air duct (2), and the door panel (3) is positioned above the air duct (2) when in the second position, so as to open the air duct (2).
2. The damper plate type air door for the main ventilation system of the coal mine as claimed in claim 1, wherein the lower ends of the two vertical rods (4) are respectively connected with the side walls on both sides of the air duct (2), and the lower ends of the two vertical rods (4) are at least partially positioned inside the air duct (2).
3. The gate type damper for the main ventilation system of coal mine according to claim 2, characterized in that two said vertical rods (4) are respectively integrated with the side walls of both sides of said air duct (2).
4. The damper plate type damper for main coal mine ventilation system according to claim 2, wherein the guiding structure is a guiding groove (8) extending along the axial direction of the vertical rod (4), and both sides of the door plate (3) slidably extend into the two guiding grooves (8), respectively.
5. The damper plate type air door for the main ventilation system of the coal mine according to claim 4, wherein the two guide grooves (8) are each provided with a sealing strip (9) for sealing a joint surface between the door plate (3) and the guide groove (8) at least on a wall of the main ventilation fan (1) side, and the extending direction of the sealing strip (9) is the same as the extending direction of the guide groove (8).
6. The damper plate type damper for a main ventilation system of a coal mine according to claim 1, wherein the through hole (10) is provided with a sealing strip (9) for sealing a joint surface between the through hole (10) and the door plate (3) at least on an inner wall of a side close to the main ventilation fan (1), and the sealing strip (9) extends in a width direction of the door plate (3).
7. The damper plate type air door for the main ventilation system of the coal mine according to claim 1, wherein a clamping groove (11) for the lower end of the door plate (3) to extend into is formed in the bottom of the air duct (2), a sealing strip (9) for sealing a joint surface between the clamping groove (11) and the door plate (3) is arranged on at least the inner wall of one side of the main ventilation machine (1) of the clamping groove (11), and the sealing strip (9) extends in the width direction of the door plate (3).
8. The damper plate type air door for the main ventilation system of the coal mine as claimed in claim 1, wherein the lifting device comprises a winch (12) and a pulley mechanism, and the winch (12) drives the door plate (3) to displace through the pulley mechanism.
9. The damper plate type damper for the main ventilation system of the coal mine according to claim 8, wherein the pulley mechanism comprises a movable pulley (15) arranged on the door plate (3) and a fixed pulley (14) arranged on the door frame, and a steel wire rope (13) on the winch (12) passes through the fixed pulley (14) and the movable pulley (15) in sequence to be fixedly connected with the door frame.
10. The damper plate type damper for a main ventilation system of a coal mine according to claim 1, further comprising a first stroke switch (16) for limiting a rising height of the door plate (3) and a second stroke switch (17) for limiting a falling height of the door plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010806994.1A CN111878148A (en) | 2020-08-12 | 2020-08-12 | Gate plate type air door for main ventilation system of coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010806994.1A CN111878148A (en) | 2020-08-12 | 2020-08-12 | Gate plate type air door for main ventilation system of coal mine |
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| Publication Number | Publication Date |
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| CN111878148A true CN111878148A (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010806994.1A Pending CN111878148A (en) | 2020-08-12 | 2020-08-12 | Gate plate type air door for main ventilation system of coal mine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523794A (en) * | 2020-12-01 | 2021-03-19 | 淮南市百邦气动科技有限公司 | Electric control device for air door |
-
2020
- 2020-08-12 CN CN202010806994.1A patent/CN111878148A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523794A (en) * | 2020-12-01 | 2021-03-19 | 淮南市百邦气动科技有限公司 | Electric control device for air door |
| CN112523794B (en) * | 2020-12-01 | 2023-11-28 | 淮南市百邦气动科技有限公司 | Air door electric control device |
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