CN116607992A - Underground coal mine ventilation adjusting device and adjusting method - Google Patents

Underground coal mine ventilation adjusting device and adjusting method Download PDF

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Publication number
CN116607992A
CN116607992A CN202310053234.1A CN202310053234A CN116607992A CN 116607992 A CN116607992 A CN 116607992A CN 202310053234 A CN202310053234 A CN 202310053234A CN 116607992 A CN116607992 A CN 116607992A
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CN
China
Prior art keywords
pipe
air
water
coal mine
turbine
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CN202310053234.1A
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Chinese (zh)
Inventor
梁立玲
陈建云
蒋春晖
翟龙飞
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Individual
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Individual
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Priority to CN202310053234.1A priority Critical patent/CN116607992A/en
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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
    • E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
    • 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
    • E21F1/14—Air partitions; Air locks
    • E21F1/145—Air locks
    • 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
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • 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
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices
    • 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
    • E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • 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
    • E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/20—Drawing-off or depositing dust
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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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)
  • Separation Of Particles Using Liquids (AREA)

Abstract

The invention relates to the technical field of ventilation facilities in coal mines, in particular to a ventilation regulating device and a ventilation regulating method in coal mines, comprising an air pipe and a ventilation device; the partition board is fixedly arranged in the air pipe along the axis of the air pipe, the partition board divides the air pipe into two spaces, and the air pipe is provided with a gas concentration sensor and a dust concentration sensor; the partition plate is provided with a through groove, the filter screen is of a circular structure, and the filter screen is rotatably arranged on the through groove along the axis of the air pipe; the toothed ring is fixedly arranged at the periphery of the filter screen along the axis of the filter screen; the transmission device is arranged at one side of the toothed ring; the driving device is arranged on one side of the transmission device, which is far away from the toothed ring, and drives the toothed ring to rotate through the transmission device; the flowmeter is arranged in a space at one side of the air pipe for exhausting air; the collecting device is arranged on the side wall of the air pipe on one side of the air inlet, so that dust in the coal mine can not influence normal ventilation, and further gas in the coal mine can be normally discharged.

Description

Underground coal mine ventilation adjusting device and adjusting method
Technical Field
The invention relates to the technical field of underground ventilation facilities of coal mines, in particular to an underground ventilation adjusting device and an underground ventilation adjusting method of coal mines.
Background
The air door is an important device which can not only cut off the wind flow but also pass vehicles and pedestrians under the coal mine, in the prior art, a door body in the air door is hinged with the air door to be opened, and the door body needs to be frequently opened and closed when the air door is in a linkage state, so that the service efficiency of the air door is low.
Chinese patent CN110486077B discloses a ventilation adjusting device in coal mine, which comprises two air doors, wherein the bottom of each air door is provided with a bottom plate, the bottom plates are provided with door bodies, the air doors are provided with openings, the positions of the openings are matched with the door bodies, the bottom ends of the door bodies are hinged with the bottom plates, a frame is arranged in each air door, a motor is arranged in each frame, a coupler is arranged on each motor, one end of each coupler, far away from an output shaft of each motor, is provided with a rotating rod, each rotating rod is provided with a rotating disc, each rotating disc is provided with a push-pull rod, one end of each push-pull rod, far away from each rotating disc, is hinged with the corresponding door body, each frame is provided with a through hole, and the positions of the through holes are matched with the push-pull rods, and the ventilation adjusting device further comprises a substrate; the photoelectric sensor is arranged on the support frame, the position sensing plate is arranged on the air door, when the position sensing plate rises to the height of the photoelectric sensor, rays emitted by the photoelectric sensor are contacted with the position sensing plate, and the position sensing plate is positioned on the opposite side of the air door to the hinge direction of the door body; the base plate is provided with a closed frame, the bottom plate is positioned in the closed frame, the bottom of the bottom plate is provided with a bottom plate lifting adjusting device, the device further comprises a control system, and the photoelectric sensor, the motor and the bottom plate lifting adjusting device are all connected with the control system.
According to the scheme, although the linkage opening and closing of the two air doors are realized, ventilation of the lower part of the coal mine can not be well achieved only through air door adjustment, gas aggregation phenomenon can occur in the coal mine exploitation process, dust is easy to occur when the coal mine is exploited, the gas aggregation is easy to cause explosion, dust explosion is easy to occur when the dust aggregation is conducted, in the prior art, although monitoring devices for gas concentration and dust concentration are arranged, the gas and the dust are mixed in the air of the coal mine, the air still needs to be filtered when the air in the coal mine is pumped out, the performance of the filtering device is reduced due to the fact that the dust exists in the air for a long time, if the gas concentration in the coal mine is too high at this time to be exhausted, the gas cannot be exhausted timely after the filtering device blocked by the dust is used for exhausting the air, and the gas concentration in the coal mine is continuously increased.
Disclosure of Invention
According to the underground ventilation adjusting device and the adjusting method for the coal mine, the air in the coal mine is pumped out through the air pipe by the fan arranged on the upper side of the partition board, the pumped air passes through the filter screen, coal mine dust is only attached to one side of the filter screen, the driving device drives the toothed ring to rotate through the transmission device, the filter screen arranged on the toothed ring rotates along with the toothed ring, the filter screen above the partition board gradually rotates to the lower side of the partition board, the air outside is blown into the coal mine through the air pipe by the fan arranged on the lower side of the partition board, the air flow directions above and below the partition board are opposite, the air flowing into the coal mine can blow dust on the filter screen into the collecting device, the collecting device is used for reducing the dust blown in the coal mine, the working pressure of the filter screen is reduced, normal ventilation of the dust in the coal mine is guaranteed, and then the gas in the coal mine can be normally discharged.
In order to solve the problems in the prior art, the invention adopts the following technical scheme:
a ventilation regulating device for underground coal mine comprises an air pipe and a ventilation device; the ventilation device comprises a partition plate, a transmission device, a filter screen, a toothed ring, a collection device, a driving device and a flowmeter; the partition board is fixedly arranged in the air pipe along the axis of the air pipe, the partition board divides the air pipe into two spaces, one space is used for air intake, the other space is used for air exhaust, an air inlet and an air outlet are formed in one end of the air pipe, fans used for air intake and air exhaust are respectively arranged in the two spaces, and a gas concentration sensor and a dust concentration sensor are arranged on the air pipe; the partition plate is provided with a through groove, the filter screen is of a circular structure, and the filter screen is rotatably arranged on the through groove along the axis of the air pipe; the toothed ring is fixedly arranged at the periphery of the filter screen along the axis of the filter screen; the transmission device is arranged at one side of the toothed ring; the driving device is arranged on one side of the transmission device far away from the toothed ring, water flow exists in the driving device, the water flow drives the driving device to rotate, the driving device drives the toothed ring to rotate through the transmission device, the driving device can spray water mist, a first controller is arranged on one side of the driving device, the dust concentration sensor controls the driving device to spray the water mist through the first controller, and the driving device drives the toothed ring to rotate through the transmission device; the flowmeter is arranged in the space at one side of the air pipe for exhausting, and is used for detecting the smoothness of exhaust; the collecting device is arranged on the side wall of the air pipe on the air inlet side and used for collecting dust on the filter screen.
Preferably, the transmission comprises a first bevel gear, a second bevel gear and a gear; the gear is arranged on one side of the toothed ring, and the toothed ring is meshed with the gear; the first bevel gear is fixedly arranged on the gear along the axis of the gear; the second bevel gear is arranged on one side of the first bevel gear, the axis of the second bevel gear is in a vertical state, and the second bevel gear is connected with the driving device.
Preferably, the collecting device comprises a collecting shell, a dust falling component, a pressure maintaining component and a branch pipeline; the collecting shell is arranged on the side wall of the air pipe below the partition plate and is communicated with the air pipe; the dust falling component is arranged in the collecting shell; the branch pipeline is connected with the driving device, clean water is stored in the branch pipeline, and one end of the branch pipeline, which is far away from the driving device, is communicated with the dust settling component; the pressure maintaining component is arranged between the branch pipeline and the driving device, and can maintain the pressure of the dust falling component.
Preferably, the driving means comprises a water inlet pipe, a water return pipe and a first turbine; the first turbine is arranged on one side of the second bevel gear, the output end of the first turbine is fixedly connected with the second bevel gear, and the first turbine can drive the second bevel gear to rotate; the water inlet pipe is respectively arranged on the water inlet and the water outlet of the first turbine, and one end of the water inlet pipe is provided with a water pump; the water return pipe is arranged at the upper part of the water inlet pipe, and the water return pipe is communicated with the water inlet pipe.
Preferably, the pressure maintaining component comprises a pressure maintaining pipe, a limiting ring, a plugging ball, a spring, an annular shell and a circulating gas pipe; the pressure maintaining pipe is arranged on a water inlet pipe at one side of the water inlet of the first turbine, the branch pipe is arranged at one side of the pressure maintaining pipe away from the first turbine, and a chamfering ring is arranged at one end of the pressure maintaining pipe away from the first turbine; the plugging ball is slidably arranged in the pressure maintaining pipe at one side of the chamfering ring, which is close to the first turbine, along the axis of the pressure maintaining pipe; the limiting ring is fixedly arranged on one side, far away from the chamfer ring, of the plugging ball along the axis of the pressure maintaining pipe, and a first gap is reserved between the limiting ring and the plugging ball; the spring is arranged in the first gap along the axis of the pressure maintaining pipe; the annular shell is fixedly arranged at one end, close to the first turbine, of the plugging ball along the axis of the pressure maintaining pipe, a through groove for water supply to pass through is formed in one side, close to the plugging ball, of the annular shell, the limiting ring divides the annular shell into two cavities, and the spring is arranged in the cavity, close to one side, of the plugging ball; two ends of the circulating air pipe are respectively communicated with the two cavities.
Preferably, the dust settling assembly comprises a dust settling pipe; one end of the dust fall pipe is connected with one end of the branch pipe away from the driving device, a dust fall hole is formed in the dust fall pipe, and the output end of the dust fall hole is vertically downward.
Preferably, the ventilation device further comprises a wind direction control device comprising a second turbine, a rotating plate and a communication device; the communication device is arranged at one side of the driving device, which is close to the air inlet, and is communicated with the driving device, and water flow exists in the communication device; the second turbine is arranged on the communication device, and the water flow can drive the second turbine to rotate; the rotating plate is fixedly arranged at the output end of the second turbine, the rotating plate is positioned at one side of the partition board close to the air inlet, and the second turbine can drive the rotating plate to rotate.
Preferably, the communication device comprises a communication pipe, a first switch valve, an upper connection pipe, a second switch valve, a lower connection pipe and a third switch valve; the communicating pipe is arranged between the water inlet pipe and the water return pipe and is used for introducing water flow in the water inlet pipe into the water return pipe; the first switch valve is arranged on the communicating pipe; the upper connecting pipe is arranged at one side of the water return pipe close to the air inlet; the second switch valve is arranged on the upper connecting pipe; the lower connecting pipe is arranged at one side of the water inlet pipe close to the air inlet; the third switch valve is arranged on the lower connecting pipe, and the upper connecting pipe and the lower connecting pipe are respectively connected with the water inlet and the water outlet of the second turbine.
Preferably, the driving device further comprises a water spray pipe and a fourth switch valve; the water spraying pipe is arranged above the water return pipe, and one end of the water spraying pipe is communicated with the water return pipe; the four switch valves are arranged in two, the two four switch valves are respectively arranged on the water spraying pipe and the water return pipe, and only one of the two four switch valves can be opened at the same time.
The invention also relates to a coal mine underground ventilation adjusting device and an adjusting method, which specifically comprise the following steps:
s1, a fan arranged on the upper side of a partition board pumps out air in a coal mine through an air pipe, the pumped air passes through a filter screen, coal mine dust only adheres to one side of the filter screen, and a flowmeter is used for monitoring air flow in the air pipe;
s2, the driving device drives the toothed ring to rotate through the transmission device, so that the filter screen arranged on the toothed ring rotates along with the toothed ring, the filter screen above the partition board gradually rotates to the lower part of the partition board, and when the dust concentration sensor detects that the dust concentration in a coal mine is too high, the first controller controls the driving device to spray water mist;
s3, a fan arranged at the lower side of the partition board blows external air into the coal mine through an air pipe, the air flow directions of the upper and lower sides of the partition board are opposite, and the air flowing into the coal mine blows dust on the filter screen into a collecting device, and the collecting device falls and discharges the blown dust.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the air in the coal mine is pumped out through the air pipe by the fan arranged on the upper side of the partition plate, the pumped air passes through the filter screen, the coal mine dust is only adhered to one side of the filter screen, the driving device drives the gear ring to rotate through the driving device, so that the filter screen arranged on the gear ring rotates along with the gear ring, the filter screen above the partition plate gradually rotates to the lower side of the partition plate, the fan arranged on the lower side of the partition plate blows the outside air into the coal mine through the air pipe, the air flow directions on the upper side and the lower side of the partition plate are opposite, the air flowing into the coal mine can blow the dust on the filter screen into the collecting device, the collecting device can reduce the dust blown in the coal mine and discharge the dust, the working pressure of the filter screen is reduced, the dust in the coal mine is ensured not to influence normal ventilation, and the gas in the coal mine can be normally discharged.
Drawings
FIG. 1 is a schematic perspective view of a ventilation adjusting device and an adjusting method in a coal mine;
FIG. 2 is a schematic diagram II of a ventilation adjusting device and an adjusting method in a coal mine;
FIG. 3 is a perspective view of a coal mine underground ventilation adjustment device and adjustment method;
FIG. 4 is a schematic perspective view of a coal mine underground ventilation adjustment device and adjustment method with the collection housing removed;
FIG. 5 is a schematic diagram II of a coal mine underground ventilation adjustment device and adjustment method with the collection shell removed;
FIG. 6 is a perspective view of a coal mine downhole ventilation adjustment apparatus and adjustment method with the collection housing removed;
FIG. 7 is a perspective view of a pressure maintaining assembly with a first turbine for a coal mine downhole ventilation adjustment apparatus and adjustment method;
FIG. 8 is a side view of a pressure maintaining assembly of a coal mine underground ventilation adjustment device and adjustment method;
FIG. 9 is a schematic cross-sectional view of the ventilation control device and control method in the coal mine at A-A of FIG. 8;
FIG. 10 is an enlarged schematic view of a portion of the coal mine downhole ventilation adjustment apparatus and adjustment method at B in FIG. 9.
The reference numerals in the figures are:
1-an air pipe;
2-ventilation means;
21-a separator;
22-transmission means; 221-a first bevel gear; 222-a second bevel gear; 223-gear;
23-a filter screen;
24-tooth ring;
25-collecting means; 251-collecting the shell; 252-dust fall assembly; 2521-a dust fall pipe; 253-pressure maintaining component; 2531-a pressure maintaining pipe; 2532-a limiting ring; 2533-a blocking ball; 2534-a spring; 2535-annular shell; 2536-a circulation gas pipe; 254-branch line;
26-a drive device; 261-water inlet pipe; 262-a water return pipe; 2621-spray pipes; 2622-fourth switch valves; 263-a first turbine;
27-a flow meter;
28-wind direction control device; 281-a second turbine; 282-rotating plate; 283-communicating means; 2831-communicating tube; 2832—a first switching valve; 2833-upper connecting tube; 2834—a second switching valve; 2835-lower connecting tube; 2836-third switch valve.
Description of the embodiments
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
Referring to fig. 1-3 and 5: the underground ventilation adjusting device for the coal mine comprises an air pipe 1 and a ventilation device 2; the ventilation device 2 comprises a baffle 21, a transmission device 22, a filter screen 23, a toothed ring 24, a collecting device 25, a driving device 26 and a flowmeter 27; the baffle 21 is fixedly arranged in the air pipe 1 along the axis of the air pipe 1, the baffle 21 divides the air pipe 1 into two spaces, one space is used for air intake, the other space is used for air exhaust, an air intake and an air exhaust are reserved at one end of the air pipe 1, fans used for air intake and air exhaust are respectively arranged in the two spaces, and a gas concentration sensor and a dust concentration sensor are arranged on the air pipe 1; the baffle 21 is provided with a through groove, the filter screen 23 is of a circular structure, and the filter screen 23 can be rotatably arranged on the through groove along the axis of the air pipe 1; the toothed ring 24 is fixedly arranged at the periphery of the filter screen 23 along the axis of the filter screen 23; the transmission 22 is arranged on one side of the toothed ring 24; the driving device 26 is arranged on one side of the transmission device 22 far away from the toothed ring 24, water flow exists in the driving device 26, the water flow drives the driving device 26 to rotate, the driving device 26 drives the toothed ring 24 to rotate through the transmission device 22, the driving device 26 can spray water mist, a first controller is arranged on one side of the driving device 26, the dust concentration sensor controls the driving device 26 to spray water mist through the first controller, and the driving device 26 drives the toothed ring 24 to rotate through the transmission device 22; the flowmeter 27 is arranged in the space at one side of the air pipe 1 for exhausting, and the flowmeter 27 is used for detecting the smoothness of exhaust; the collecting device 25 is arranged on the side wall of the air pipe 1 on the air inlet side, and the collecting device 25 is used for collecting dust on the filter screen 23.
Since the partition plate 21 divides the air pipe 1 into two spaces, the space above the partition plate 21 is used for air outlet, the space below the partition plate 21 is used for air inlet, the fan inputs air into the coal mine through the space below the partition plate 21, the fan above the partition plate 21 can pump out the air in the coal mine through the space above the partition plate 21, the toothed ring 24 can drive the filter screen 23 to rotate, the air pumped out from the coal mine exists in the space above the partition plate 21, so that coal mine dust is mixed in the air, the dust can be attached to one side of the filter screen 23, the driving device 26 can drive the toothed ring 24 to rotate through the driving device 22, so that the filter screen 23 attached with the dust can be driven by the toothed ring 24 to rotate to the position below the partition plate 21, the air flow direction below the partition plate 21 is opposite to the air flow direction above the partition plate 21, so that under the action of the reaction force, dust attached to the filter screen 23 is blown down by flowing air, the blown dust is collected by the collecting device 25, the dust on the filter screen 23 is accumulated more and more, the dust removing capability below the partition plate 21 is limited along with long-term use, the flow rate of the air is reduced at the moment, the flow meter 27 can monitor the reduction of the flow rate of the air, then the driving device 26 can spray water mist under the control of the first controller, the water mist can reduce the dust in a coal mine, thereby relieving the dust removing pressure below the partition plate 21 on the filter screen 23, meanwhile, when the gas concentration sensor monitors the gas concentration in the coal mine to be too high, the air discharge quantity is required to be increased, the gas concentration sensor can send signals to the first controller, the driving device 26 is controlled to spray the water mist, so that the dust concentration in the coal mine can be greatly reduced, meanwhile, as the exhaust amount is increased, the air inlet amount is increased, the cleaning effect on the filter screen 23 is improved by the increased air inlet amount, so that air at the filter screen 23 above the partition plate 21 passes through the filter screen 23 more easily, the gas concentration in a coal mine can be gradually reduced, the dust in the coal mine can not influence the normal ventilation, and the gas in the coal mine can be normally discharged.
Referring to fig. 1 and 3: the transmission 22 includes a first bevel gear 221, a second bevel gear 222, and a gear 223; the gear 223 is disposed at one side of the toothed ring 24, and the toothed ring 24 and the gear 223 are engaged with each other; the first bevel gear 221 is fixedly disposed on the gear 223 along the axis of the gear 223; the second bevel gear 222 is disposed at one side of the first bevel gear 221, the axis of the second bevel gear 222 is vertical, and the second bevel gear 222 is connected with the driving device 26.
When the water flow in the driving device 26 starts to flow, the second bevel gear 222 is driven to rotate, and the first bevel gear 221 is driven to rotate by the second bevel gear 222 due to the mutual engagement of the first bevel gear 221 and the second bevel gear 222, and the first bevel gear 221 is fixedly connected with the gear 223, so that the gear 223 is driven to rotate, and the gear 223 is engaged with the toothed ring 24, so that the toothed ring 24 rotates.
Referring to fig. 2-4: the collecting device 25 includes a collecting housing 251, a dust fall assembly 252, a pressure maintaining assembly 253, and a branch pipe 254; the collecting shell 251 is arranged on the side wall of the air duct 1 below the partition plate 21, and the collecting shell 251 is communicated with the air duct 1; the dust falling assembly 252 is disposed inside the collection case 251; the branch pipeline 254 is connected with the driving device 26, clear water is stored in the branch pipeline 254, and one end of the branch pipeline 254 far away from the driving device 26 is communicated with the dust falling component 252; the pressure maintaining assembly 253 is arranged between the branch pipeline 254 and the driving device 26, and the pressure maintaining assembly 253 can maintain the pressure of the dust falling assembly 252.
When the fan draws outside air into the coal mine, the air passes through the filter screen 23 to enter the coal mine, dust on the filter screen 23 can fall into the collecting shell 251, the dust falling component 252 can fall dust falling into the collecting shell 251, the dust is prevented from continuously flying after being discharged by the collecting shell 251, and the dust falling component 252 is connected with the driving device 26 through the branch pipe 254, so that in order to ensure the water flow pressure in the dust falling component 252, the pressure maintaining component 253 is required to be arranged between the branch pipe 254 and the driving device 26, and the dust falling component 252 can work normally.
Referring to fig. 1, 2 and 4: the driving device 26 includes a water inlet pipe 261, a water return pipe 262 and a first turbine 263; the first turbine 263 is arranged at one side of the second bevel gear 222, the output end of the first turbine 263 is fixedly connected with the second bevel gear 222, and the first turbine 263 can drive the second bevel gear 222 to rotate; the water inlet pipe 261 is respectively arranged on the water inlet and the water outlet of the first turbine 263, and one end of the water inlet pipe 261 is provided with a water pump; the return pipe 262 is disposed at an upper portion of the inlet pipe 261, and the return pipe 262 and the inlet pipe 261 are communicated with each other.
The water pump pumps water into the water inlet pipe 261, the first turbine 263 is arranged on the water inlet pipe 261, so that the first turbine 263 is driven to rotate, the first turbine 263 is fixedly connected with the second bevel gear 222, so that when the first turbine 263 rotates, the second bevel gear 222 is driven to rotate, and water flow in the water inlet pipe 261 flows back from the water inlet pipe 261, so that circulation is formed.
Referring to fig. 7-10: the pressure maintaining assembly 253 comprises a pressure maintaining pipe 2531, a limiting ring 2532, a blocking ball 2533, a spring 2534, an annular shell 2535 and a circulating air pipe 2536; the pressure maintaining pipe 2531 is arranged on the water inlet pipe 261 at the water inlet side of the first turbine 263, the branch pipe 254 is arranged at the side of the pressure maintaining pipe 2531 away from the first turbine 263, and a chamfering ring is arranged at the end of the pressure maintaining pipe 2531 away from the first turbine 263; the plugging ball 2533 is slidably arranged in the pressure maintaining pipe 2531 on the side of the chamfering ring close to the first turbine 263 along the axis of the pressure maintaining pipe 2531; the limiting ring 2532 is fixedly arranged on one side, far away from the chamfer ring, of the plugging ball 2533 along the axis of the pressure maintaining pipe 2531, and a first gap is reserved between the limiting ring 2532 and the plugging ball 2533; a spring 2534 is disposed in the first gap along the axis of the pressure maintaining pipe 2531; the annular shell 2535 is fixedly arranged at one end, close to the first turbine 263, of the plugging ball 2533 along the axis of the pressure maintaining pipe 2531, a through groove for water to pass through is formed in one side, close to the plugging ball 2533, of the annular shell 2535, the limiting ring 2532 divides the annular shell 2535 into two cavities, and the spring 2534 is arranged in the cavity on one side, close to the plugging ball 2533; both ends of the circulation air pipe 2536 are respectively communicated with the two cavities.
When water starts to enter the water inlet pipe 261, since the branch pipeline 254 is arranged on one side of the pressure maintaining pipe 2531 away from the first turbine 263, after water reaches one side of the pressure maintaining pipe 2531, if water enters the pressure maintaining pipe 2531, the water needs to overcome the elastic force of the spring 2534, as the pressure of the water increases continuously, the plugging ball 2533 is extruded by the water, the plugging ball 2533 compresses the spring 2534 under the action of the water, as the plugging ball 2533 moves, the annular shell 2535 moves along with the plugging ball, air in a cavity provided with the spring 2534 enters another cavity through the circulating air pipe 2536, and the spring 2534 provides pressure for the branch pipeline 254, so that the normal operation of the dust falling assembly 252 is ensured.
Referring to fig. 4 and 5: dust suppression assembly 252 includes a dust suppression tube 2521; one end of the dust settling pipe 2521 is connected with one end of the branch pipeline 254, which is far away from the driving device 26, a dust settling hole is formed in the dust settling pipe 2521, and the output end of the dust settling hole is vertically downward.
The branch pipe 254 introduces the water flow in the driving device 26 into the dust settling pipe 2521, and the mist ejected from the dust settling pipe 2521 settles the dust passing through the collecting housing 251.
Referring to fig. 2 and 3: the ventilation device 2 further includes a wind direction control device 28, and the wind direction control device 28 includes a second turbine 281, a rotating plate 282, and a communication device 283; the communication device 283 is arranged on one side of the driving device 26 close to the air inlet, the communication device 283 is communicated with the driving device 26, and water flows are stored in the communication device 283; the second turbine 281 is arranged on the communication device 283, and the water flow can drive the second turbine 281 to rotate; the rotating plate 282 is fixedly arranged at the output end of the second turbine 281, the rotating plate 282 is positioned at one side of the partition 21 close to the air inlet, and the second turbine 281 can drive the rotating plate 282 to rotate.
The rotating plate 282 can control the air flowing direction in the air inlet, so that the air flowing into the coal mine is prevented from blowing dust, when the rotating plate 282 needs to be driven to rotate, the communication device 283 can be opened, the second turbine 281 rotates, and the second turbine 281 drives the rotating plate 282 to rotate.
Referring to fig. 2 and 6: the communication means 283 includes a communication pipe 2831, a first switching valve 2832, an upper connection pipe 2833, a second switching valve 2834, a lower connection pipe 2835 and a third switching valve 2836; a communication pipe 2831 is provided between the water inlet pipe 261 and the water return pipe 262, the communication pipe 2831 being used to introduce the water flow in the water inlet pipe 261 into the water return pipe 262; the first switching valve 2832 is provided on the communication pipe 2831; the upper connecting pipe 2833 is arranged at one side of the water return pipe 262 close to the air inlet; the second switching valve 2834 is disposed on the upper connection pipe 2833; the lower connecting pipe 2835 is arranged at one side of the water inlet pipe 261 close to the air inlet; the third switching valve 2836 is provided on the lower connection pipe 2835, and the upper connection pipe 2833 and the lower connection pipe 2835 are connected to the water inlet and the water outlet of the second turbine 281, respectively.
When the rotation plate 282 is not required to be adjusted, the first switch valve 2832 is in an open state, the second switch valve 2834 and the third switch valve 2836 are in a closed state, and at this time, water flow in the water inlet pipe 261 enters the water return pipe 262 through the communicating pipe 2831, and when the second turbine 281 is required to be rotated, the first switch valve 2832 is closed, the second switch valve 2834 and the second switch valve 2834 are opened, water flow in the water inlet pipe 261 enters the second turbine 281 through the lower connecting pipe 2835, and enters the water return pipe 262 through the upper connecting pipe 2833, so that the second turbine 281 is driven to rotate.
Referring to fig. 6: the driving device 26 further includes a water spray pipe 2621 and a fourth switching valve 2622; the water spraying pipe 2621 is arranged above the water return pipe 262, and one end of the water spraying pipe 2621 is communicated with the water return pipe 262; the four switch valves 2622 are provided in two, the two fourth switch valves 2622 are provided on the water spray pipe 2621 and the water return pipe 262, respectively, and only one of the two fourth switch valves 2622 can be opened at the same time.
When the dust concentration sensor monitors that the dust concentration in the coal mine is too high, the fourth switch valve 2622 arranged on the water return pipe 262 is closed, then the fourth switch valve 2622 arranged on the water spray pipe 2621 is opened, water flows into the water spray pipe 2621 after passing through the water inlet pipe 261, the water spray pipe 2621 atomizes and sprays water, so that the effect of dust fall is achieved, and the water spray pipe 2621 starts to spray water only when the dust concentration is high because the coal mine is relatively closed, so that the coal mine is prevented from being excessively wet in the pit and hurting the body of a worker.
Referring to fig. 1-10: the invention also relates to a coal mine underground ventilation adjusting device and an adjusting method, which specifically comprise the following steps:
s1, a fan arranged on the upper side of a partition plate 21 pumps out air in a coal mine through an air pipe 1, the pumped air passes through a filter screen 23, coal mine dust only adheres to one side of the filter screen 23, and a flowmeter 27 is used for monitoring air flow in the air pipe 1;
s2, the driving device 26 drives the toothed ring 24 to rotate through the transmission device 22, so that the filter screen 23 arranged on the toothed ring 24 rotates along with the toothed ring, the filter screen 23 above the partition plate 21 gradually rotates to the lower part of the partition plate 21, and when the dust concentration sensor detects that the dust concentration in a coal mine is too high, the first controller controls the driving device 26 to spray water mist;
s3, a fan arranged at the lower side of the partition plate 21 blows external air into the coal mine through the air pipe 1, the air flow directions of the upper and lower sides of the partition plate 21 are opposite, and the air flowing into the coal mine blows dust on the filter screen 23 into the collecting device 25, and the collecting device 25 falls and discharges the blown dust.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. The underground ventilation adjusting device for the coal mine comprises an air pipe (1) and a ventilation device (2);
the device is characterized in that the ventilation device (2) comprises a baffle plate (21), a transmission device (22), a filter screen (23), a toothed ring (24), a collecting device (25), a driving device (26) and a flowmeter (27);
the air pipe (1) is divided into two spaces by the partition plate (21), wherein one space is used for air intake, the other space is used for air exhaust, an air intake and an air outlet are formed in one end of the air pipe (1), fans used for air intake and air exhaust are respectively arranged in the two spaces, and a gas concentration sensor and a dust concentration sensor are arranged on the air pipe (1);
the partition plate (21) is provided with a through groove, the filter screen (23) is of a circular structure, and the filter screen (23) can be rotatably arranged on the through groove along the axis of the air pipe (1);
the toothed ring (24) is fixedly arranged at the periphery of the filter screen (23) along the axis of the filter screen (23);
the transmission device (22) is arranged at one side of the toothed ring (24);
the driving device (26) is arranged on one side of the transmission device (22) far away from the toothed ring (24), water flow exists in the driving device (26), the driving device (26) drives the toothed ring (24) to rotate through the transmission device (22), the driving device (26) can spray water mist, a first controller is arranged on one side of the driving device (26), the dust concentration sensor controls the driving device (26) to spray water mist through the first controller, and the driving device (26) drives the toothed ring (24) to rotate through the transmission device (22);
the flowmeter (27) is arranged in a space at one side of the air pipe (1) for exhausting, and the flowmeter (27) is used for detecting the smoothness of exhausting;
the collecting device (25) is arranged on the side wall of the air pipe (1) at the air inlet side, and the collecting device (25) is used for collecting dust on the filter screen (23).
2. A ventilation regulating device in a coal mine as claimed in claim 1, wherein the transmission (22) comprises a first bevel gear (221), a second bevel gear (222) and a gear (223);
the gear (223) is arranged on one side of the toothed ring (24), and the toothed ring (24) and the gear (223) are meshed with each other;
the first bevel gear (221) is fixedly arranged on the gear (223) along the axis of the gear (223);
the second bevel gear (222) is arranged on one side of the first bevel gear (221), the axis of the second bevel gear (222) is in a vertical state, and the second bevel gear (222) is connected with the driving device (26).
3. A ventilation regulating device in a coal mine shaft according to claim 2, wherein the collecting device (25) comprises a collecting housing (251), a dust settling assembly (252), a pressure maintaining assembly (253) and a branch pipe (254);
the collecting shell (251) is arranged on the side wall of the air pipe (1) below the partition plate (21), and the collecting shell (251) is communicated with the air pipe (1);
the dust falling component (252) is arranged inside the collecting shell (251);
the branch pipeline (254) is connected with the driving device (26), clear water is stored in the branch pipeline (254), and one end of the branch pipeline (254) far away from the driving device (26) is communicated with the dust falling component (252);
the pressure maintaining assembly (253) is arranged between the branch pipeline (254) and the driving device (26), and the pressure maintaining assembly (253) can maintain the pressure of the dust settling assembly (252).
4. A ventilation regulating device in a coal mine as claimed in claim 3, wherein the drive means (26) comprises a water inlet pipe (261), a water return pipe (262) and a first turbine (263);
the first turbine (263) is arranged on one side of the second bevel gear (222), the output end of the first turbine (263) is fixedly connected with the second bevel gear (222), and the first turbine (263) can drive the second bevel gear (222) to rotate;
the water inlet pipe (261) is respectively arranged on the water inlet and the water outlet of the first turbine (263), and a water pump is arranged at one end of the water inlet pipe (261);
the water return pipe (262) is arranged at the upper part of the water inlet pipe (261), and the water return pipe (262) and the water inlet pipe (261) are mutually communicated.
5. The underground coal mine ventilation adjusting device according to claim 4, wherein the pressure maintaining assembly (253) comprises a pressure maintaining pipe (2531), a limiting ring (2532), a plugging ball (2533), a spring (2534), an annular shell (2535) and a circulating gas pipe (2536);
the pressure maintaining pipe (2531) is arranged on a water inlet pipe (261) at the water inlet side of the first turbine (263), the branch pipe (254) is arranged at the side, far away from the first turbine (263), of the pressure maintaining pipe (2531), and a chamfering ring is arranged at one end, far away from the first turbine (263), of the pressure maintaining pipe (2531);
the plugging ball (2533) is slidably arranged in the pressure maintaining pipe (2531) at one side of the chamfering ring close to the first turbine (263) along the axis of the pressure maintaining pipe (2531);
the limiting ring (2532) is fixedly arranged on one side, far away from the chamfering ring, of the plugging ball (2533) along the axis of the pressure maintaining pipe (2531), and a first gap is reserved between the limiting ring (2532) and the plugging ball (2533);
a spring (2534) is disposed in the first gap along the axis of the pressure maintaining pipe (2531);
the annular shell (2535) is fixedly arranged at one end, close to the first turbine (263), of the plugging ball (2533) along the axis of the pressure maintaining pipe (2531), a through groove for water to pass through is formed in one side, close to the plugging ball (2533), of the annular shell (2535), the limiting ring (2532) divides the annular shell (2535) into two cavities, and the spring (2534) is arranged in the cavity, close to one side of the plugging ball (2533);
two ends of the circulating air pipe (2536) are respectively communicated with the two cavities.
6. A ventilation and adjustment device in a coal mine as claimed in claim 3, wherein the dust settling assembly (252) comprises a dust settling pipe (2521);
one end of the dust settling pipe (2521) is connected with one end of the branch pipeline (254) far away from the driving device (26), a dust settling hole is formed in the dust settling pipe (2521), and the output end of the dust settling hole is vertically downward.
7. A ventilation and regulation device in a coal mine as claimed in claim 4, wherein the ventilation device (2) further comprises a wind direction control device (28), the wind direction control device (28) comprising a second turbine (281), a rotating plate (282) and a communication device (283);
the communication device (283) is arranged on one side of the driving device (26) close to the air inlet, the communication device (283) is communicated with the driving device (26), and water flows are stored in the communication device (283);
the second turbine (281) is arranged on the communication device (283), and the water flow can drive the second turbine (281) to rotate;
the rotating plate (282) is fixedly arranged at the output end of the second turbine (281), the rotating plate (282) is positioned at one side of the partition plate (21) close to the air inlet, and the second turbine (281) can drive the rotating plate (282) to rotate.
8. The underground coal mine ventilation adjusting device according to claim 7, wherein the communication device (283) comprises a communication pipe (2831), a first switch valve (2832), an upper connection pipe (2833), a second switch valve (2834), a lower connection pipe (2835) and a third switch valve (2836);
the communicating pipe (2831) is arranged between the water inlet pipe (261) and the water return pipe (262), and the communicating pipe (2831) is used for introducing water flow in the water inlet pipe (261) into the water return pipe (262);
the first switch valve (2832) is arranged on the communicating pipe (2831);
the upper connecting pipe (2833) is arranged at one side of the water return pipe (262) close to the air inlet;
the second switch valve (2834) is arranged on the upper connecting pipe (2833);
the lower connecting pipe (2835) is arranged at one side of the water inlet pipe (261) close to the air inlet;
the third switch valve (2836) is arranged on the lower connecting pipe (2835), and the upper connecting pipe (2833) and the lower connecting pipe (2835) are respectively connected with the water inlet and the water outlet of the second turbine (281).
9. The underground coal mine ventilation regulating device of claim 4, wherein the driving device (26) further comprises a water spray pipe (2621) and a fourth switch valve (2622);
the water spraying pipe (2621) is arranged above the water return pipe (262), and one end of the water spraying pipe (2621) is communicated with the water return pipe (262);
the four switch valves (2622) are arranged in two, the two fourth switch valves (2622) are respectively arranged on the water spraying pipe (2621) and the water return pipe (262), and only one of the two fourth switch valves (2622) can be opened at the same time.
10. A ventilation adjusting device and an adjusting method in a coal mine, which adopts the ventilation adjusting device in the coal mine as claimed in any one of claims 1 to 9, and is characterized by comprising the following specific steps:
s1, a fan arranged on the upper side of a partition plate (21) pumps out air in a coal mine through an air pipe (1), the pumped air passes through a filter screen (23), coal mine dust only adheres to one side of the filter screen (23), and a flowmeter (27) is used for monitoring air flow in the air pipe (1);
s2, a driving device (26) drives a toothed ring (24) to rotate through a transmission device (22), so that a filter screen (23) arranged on the toothed ring (24) rotates along with the toothed ring, the filter screen (23) above a partition plate (21) gradually rotates to the lower part of the partition plate (21), and when a dust concentration sensor detects that the dust concentration in a coal mine is too high, a first controller controls the driving device (26) to spray water mist;
s3, a fan arranged at the lower side of the partition plate (21) blows external air into the coal mine through the air pipe (1), the air flow directions of the upper and lower sides of the partition plate (21) are opposite, and the air flowing into the coal mine can blow dust on the filter screen (23) into the collecting device (25), and the collecting device (25) can reduce and discharge the blown dust.
CN202310053234.1A 2023-02-03 2023-02-03 Underground coal mine ventilation adjusting device and adjusting method Pending CN116607992A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310053234.1A CN116607992A (en) 2023-02-03 2023-02-03 Underground coal mine ventilation adjusting device and adjusting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310053234.1A CN116607992A (en) 2023-02-03 2023-02-03 Underground coal mine ventilation adjusting device and adjusting method

Publications (1)

Publication Number Publication Date
CN116607992A true CN116607992A (en) 2023-08-18

Family

ID=87677022

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310053234.1A Pending CN116607992A (en) 2023-02-03 2023-02-03 Underground coal mine ventilation adjusting device and adjusting method

Country Status (1)

Country Link
CN (1) CN116607992A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117685039A (en) * 2024-02-03 2024-03-12 山西山煤国源煤矿安全技术有限公司 Coal seam gas extraction device and extraction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117685039A (en) * 2024-02-03 2024-03-12 山西山煤国源煤矿安全技术有限公司 Coal seam gas extraction device and extraction method
CN117685039B (en) * 2024-02-03 2024-04-12 山西山煤国源煤矿安全技术有限公司 Coal seam gas extraction device and extraction method

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