CN116436877B - Mining explosion-proof switch - Google Patents
Mining explosion-proof switch Download PDFInfo
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- CN116436877B CN116436877B CN202310691748.XA CN202310691748A CN116436877B CN 116436877 B CN116436877 B CN 116436877B CN 202310691748 A CN202310691748 A CN 202310691748A CN 116436877 B CN116436877 B CN 116436877B
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- shell
- inner shell
- air
- water
- fixedly connected
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- 238000005065 mining Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 99
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000002817 coal dust Substances 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 239000007921 spray Substances 0.000 claims description 20
- 239000003595 mist Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 15
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims 2
- 239000000779 smoke Substances 0.000 description 10
- 238000004891 communication Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/40—Constructional details, e.g. power supply, mechanical construction or backplane
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/10—Exchange station construction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/11—Protection against environment
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The application relates to the field of exchanger design, in particular to a mining explosion-proof exchanger, which comprises an exchanger main body, a machine table for placing the exchanger main body, an inner shell sleeved on the machine table and surrounding the exchanger main body, a middle shell connected to the machine table and sleeved on the inner shell and spaced from the inner shell, an outer shell fixedly connected to the inner shell and sleeved on the middle shell and spaced from the middle shell, a water inlet valve arranged on the outer shell and capable of injecting water into the middle shell, an outer detection part arranged on the inner wall of one end of the outer shell and sleeved on the middle shell and used for detecting the concentration of coal dust and methane in air, and a controller arranged in the inner shell and electrically connected with the outer detection part so as to control the water inlet valve to be opened when the concentration of coal dust or methane is detected to be too high.
Description
Technical Field
The application relates to the field of switch design, in particular to a mining explosion-proof switch.
Background
In order to lay out an information network underground in a mine so as to communicate underground and overground in real time and know underground conditions in time, a series of electronic equipment such as an exchanger is required to be arranged in the mine, and because the environment in the mine is complex, explosive mixed gas such as coal dust and even methane is easy to exist, so that the exchanger is easy to have explosion accidents when electric sparks occur during normal use or faults, and the exchanger for the mine is required to have explosion-proof characteristics.
The existing mining explosion-proof and intrinsic safety type switch with the bulletin number of CN218276947U is explosion-proof, namely, the power of the switch is controlled, so that the generated electric spark is used under the specified condition of the switch, and the minimum ignition energy of the explosion of the mixed explosive can not be reached.
Aiming at the related technology, the intrinsically safe explosion-proof mode has the explosion-proof effect only by using the switch according to certain conditions, and the switch is difficult to use under the condition of low power in the actual use process, so that the switch is difficult to effectively explosion-proof.
Disclosure of Invention
In order to enable the exchanger to be effectively explosion-proof, the application provides a mining explosion-proof exchanger.
The application provides a mining explosion-proof switch which adopts the following technical scheme.
The utility model provides a mining explosion-proof switch, including the switch main part, the board that supplies the switch main part to place, the cover is located the board and is encircleed the interior shell including the switch main part, connect in the board and the cover locate the inner shell and with the inner shell have the interval in the shell, fixed connection locates the shell of middle shell and having the interval in the shell with the middle shell in the cover, locate the shell and can be to the water intaking valve of middle shell in the water intaking, locate the shell cover establish middle shell one end inner wall and carry out concentration detection's outer detection portion to air coal dust and methane, locate in the inner shell and the electricity is connected in outer detection portion in order to control the controller that the water intaking valve opened when coal dust or methane concentration are too high.
Through adopting above-mentioned technical scheme for when entering into coal dust or methane concentration in the air between shell and the mesochite and exceeding standard, can be to the mesochite in water injection, make the water level submerge in the interior shell cover locate board one end department, make outside air be difficult for reentrant to the inner shell, make the switch in the more and power of junction device when great, the switch department also is difficult for producing explosion, can play the explosion-proof effect better.
Optionally, the shell is connected in the inner wall department of inner shell and is equipped with the water smoke shower nozzle that can spray water smoke towards shell and be close to board one end department, and the inner wall department shaping of outer shell connection in the inner shell has the blast gate that can send the air current towards shell and be close to board one end department, and the projection of blast gate on well shell terminal surface surrounds well shell terminal surface in, and the operation control ware of water smoke shower nozzle and blast gate is controlled, and the outer shell is connected in the inner shell and just is equipped with the interior detection portion that carries out concentration detection to coal dust and methane in the air in the inner wall department of just facing to well shell, and interior detection portion electricity is connected in the controller.
Optionally, when the outer detection part detects that the concentration of coal dust or methane exceeds the standard, the controller controls the water mist spray head, the air delivery duct and the water inlet valve to work, and when the water level in the middle shell is about to submerge the inner shell and is sleeved with one end of the machine table, the water inlet valve stops working;
when the inner detection part detects that the concentration of coal dust or methane exceeds the standard, the controller controls the water inlet valve to work so that water in the middle shell is submerged at one end of the inner shell sleeved machine.
Through adopting above-mentioned technical scheme for when outer detection portion originally detected coal dust or methane concentration and surpassed the standard, water smoke shower nozzle and delivery duct work, with carry out preliminary dust fall to the air between mesochite and the shell and get rid of the processing, and the water intaking valve carries out preliminary work this moment, when the air wall that water smoke and delivery duct formed was spouted at water smoke shower nozzle can be controlled coal dust and methane's concentration, the water level that the water intaking valve was injected into the mesochite need not submerge in inner shell cover locates board one end department, and for this reason, can not need shell and inner shell to remove the mesochite, in order to discharge the water in the mesochite, simultaneously when inner detection portion detected coal dust or methane concentration and surpassed the standard, hydroenergy in the mesochite was submerged with the inner shell tip rapidly, make the air that has superscalar coal dust or methane be difficult for entering into the inner shell.
Optionally, the inner shell is equipped with the liquid level sensor that highly is less than the cover of inner shell and locates board department, and liquid level sensor electricity is connected in the controller so that in the middle casing liquid level height reach the water intaking valve stop work when predetermineeing the height.
By adopting the technical scheme, the water energy fed into the middle shell by the water inlet valve can be effectively controlled.
Optionally, the inside exhaust column that can take out air to the mine and send the outer air of mine into the blast pipe in the inner shell that is equipped with of inner shell, the operation control ware control of blast pipe and exhaust column, the height of exhaust column is higher than the blast pipe height.
Through adopting above-mentioned technical scheme, when detecting coal dust or methane and exceeding the standard in the internal detection portion, blast pipe and exhaust column operation to further ensure the difficult explosion of switch of inner shell, and methane density is less than the air, make the methane that highly higher exhaust column can effectively take away probably exist in the inner shell.
Optionally, the middle shell supplies the inner shell to insert one end outer wall department fixedly connected with sliding connection in the anti-touch piece of shell inner wall.
Through adopting above-mentioned technical scheme for when shell and inner shell correspond the mesochite and carry out directional installation, the mesochite is difficult for contradicting in the shell, makes outer detection portion be difficult for receiving the collision of shell, in order to play the guard action to outer detection portion.
Optionally, water smoke shower nozzle sliding connection is in the shell inner wall, and the shell is inside to be equipped with decides the ring, decides the ring rotation and communicates there is the moving ring, and all water smoke shower nozzles communicate in the moving ring.
Through adopting above-mentioned technical scheme for water smoke can evenly be sprayed to the space between mesochite and the shell to the water smoke, in order to realize better dust fall effect.
Optionally, the movable ring is coaxially and fixedly connected with an inner ring gear, the inner ring gear is meshed with a motor gear, and the outer wall of the inner shell is provided with a power motor with an output shaft coaxially and fixedly connected with the motor gear.
By adopting the technical scheme, the running of the power motor is well protected in the inner shell.
Optionally, board fixedly connected with supplies the platform ring piece of inner shell terminal surface butt, platform ring piece fixedly connected with can peg graft the inserted bar of inner shell terminal surface, and sliding connection has the stopper that can peg graft in the inserted bar in the inner shell, and the stopper peg graft in inserted bar one end and be hemisphere, is equipped with the block spring that forces stopper inseparable grafting in the inserted bar in the inner shell.
Through adopting above-mentioned technical scheme for when establishing inner shell and board correspondence cover, because the existence of stopper makes the inner shell be difficult for appearing removing because of outside less vibrations after accomplishing the installation, make inner shell and shell keep better stability.
Optionally, stopper fixedly connected with follower rod, follower rod keep away from stopper one end shaping and have a piece inclined plane, and the inner shell outer wall rotates and is connected with the knob, and the coaxial fixedly connected with short lead screw of knob, short lead screw threaded connection have a toper section of thick bamboo, and the inside inclined plane butt of toper section of thick bamboo is in a piece inclined plane, and the inside fixedly connected with grafting of inner shell and sliding connection are in the bull stick of preventing of toper section of thick bamboo.
Through adopting above-mentioned technical scheme for when there is great vibrations in the external world, inner shell and shell also are difficult for appearing rocking, make inner shell and shell stabilize the switch and protect.
In summary, the present application includes at least one of the following beneficial effects:
the water level is submerged in one end of the inner shell sleeved on the machine table, so that external air is not easy to enter the inner shell again, and when the number of the connecting devices is large and the power is large, explosion is not easy to occur at the switch, and the explosion-proof effect can be better achieved;
when the water mist spray head sprays water mist and the air wall formed by the air delivery duct can control the concentration of coal dust and methane, the water level injected into the middle shell by the water inlet valve does not need to be submerged at one end of the inner shell sleeved on the machine table, the outer shell and the inner shell do not need to be moved away from the middle shell so as to discharge water in the middle shell, and meanwhile when the inner detection part detects that the concentration of coal dust or methane exceeds the standard, water in the middle shell can quickly submerge the end part of the inner shell, so that air with exceeding coal dust or methane is not easy to enter the inner shell.
Drawings
FIG. 1 is a schematic view of the structure of the exterior of the present application;
FIG. 2 is a schematic cross-sectional view of the outer shell, middle shell, inner shell and ring block;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is another view of FIG. 2, showing a bottom view of the top surface of the inner housing;
fig. 5 is a block diagram of the operational modules of the present application.
Reference numerals illustrate: 1. a switch body; 2. a machine table; 21. an end slope; 3. an inner case; 31. a block spring; 32. a follower lever; 33. a block incline; 34. a knob; 35. a short lead screw; 36. a conical cylinder; 37. an anti-rotation rod; 38. a temperature sensor; 39. a wireless communication module; 4. a middle shell; 41. a touch-proof block; 42. a fixed ring; 43. a moving ring; 44. an inner ring gear; 45. a motor gear; 46. a power motor; 47. a ring block; 48. a rod; 49. a limiting block; 5. a housing; 51. a water inlet valve; 52. an outer detection unit; 53. a controller; 54. a water mist spray head; 55. an air delivery duct; 56. an inner detection unit; 57. a liquid level sensor; 58. an exhaust tube; 59. and an air supply pipe.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
The embodiment of the application discloses a mining explosion-proof switch, which comprises a middle shell 4 which is placed on the ground and is vertical, wherein the bottom surface of the inner part of the middle shell 4 is fixedly connected with an organic table 2, the upper surface of the middle shell 2 is detachably connected with a switch main body 1, an external cable penetrates through the middle shell 4 to enter an inner shell 3 through the bottom of the middle shell 2 and is connected with the switch main body 1, the inner shell 3 is inserted into the machine 2 along the vertical direction, a space exists between the vertical inner wall of the inner shell 3 and the vertical outer wall of the machine 2, a table ring block 47 is fixedly connected with the vertical side surface of the machine 2 in a surrounding manner, the bottom surface of the inner shell 3 is detachably connected with the upper surface of the table ring block 47, the upper end surface of the inner shell 3 is fixedly connected with an outer shell 5, the outer shell 5 is sleeved on the middle shell 4, a space exists between the upper end surface of the middle shell 4 and the inner top surface of the outer shell 5, and a space exists between the vertical outer wall of the middle shell 4 and the vertical inner wall of the outer shell 5. The outer shell 5 is approximately cylindrical, and the middle shell 4, the inner shell 3 and the machine table 2 are rectangular.
Referring to fig. 2 and 3, the upper parts of the two opposite vertical outer walls of the middle shell 4 are fixedly connected with anti-contact blocks 41, the anti-contact blocks 41 are slidably connected to the circumferential inner wall of the outer shell 5 along the vertical direction, and the outer shell 5 can be separated from the anti-contact blocks 41, so that the outer shell 5 can be installed in an oriented manner. The upper surface of the ring block 47 can be uniformly and fixedly connected with a plurality of inserting rods 48, in this embodiment, the inserting rods 48 are arranged on two opposite sides of the ring block 47, and the bottom surface of the inner shell 3 is sleeved in the vertical direction and is slidably connected with the inserting rods 48. The inside sliding connection of inner shell 3 has the stopper 49 that can peg graft in the vertical side of inserted bar 48, and stopper 49 peg graft in inserted bar 48 one end and be the hemisphere, and inner shell 3 corresponds each stopper 49 and all fixedly connected with block spring 31, and block spring 31 butt is in stopper 49 for stopper 49 closely peg graft in inserted bar 48. The upper end of the inserted link 48 is formed with an end inclined plane 21, and the end inclined plane 21 can be abutted against one hemispherical end of the limiting block 49, so that the limiting block 49 is pushed to compress the block spring 31, and the inner shell 3 and the outer shell 5 are not easy to move relative to the middle shell 4 when being subjected to small external vibration.
Referring to fig. 2, two limiting blocks 49 are fixedly connected with a vertical follow-up rod 32, block inclined planes 33 are formed at the upper end of the follow-up rod 32, conical barrels 36 are installed inside the upper end of an inner shell 3, two opposite sides of the circumferential inclined inner walls of the conical barrels 36 are abutted against the two block inclined planes 33 in a one-to-one correspondence manner, anti-rotation rods 37 inserted into the upper parts of the conical barrels 36 are fixedly connected inside the inner shell 3, the conical barrels 36 are connected with the anti-rotation rods 37 in a sliding manner in the vertical direction, short lead screws 35 are connected with the upper ends of the conical barrels 36 in a threaded manner, a knob 34 coaxially and fixedly connected with the short lead screws 35 is rotationally connected to the upper surface of the outer shell 3, the conical barrels 36 can be made to move downwards by rotating the knob 34, the inclined circumferential inner walls of the conical barrels 36 are made to abut against the two block inclined planes 33, the two follow-up rods 32 are made to be difficult to be away from each other, the limiting blocks 49 are made to be difficult to be separated from a plug rod 48, and the inner shell 3 and the outer shell 5 are also difficult to move randomly when being subjected to external large vibration.
Referring to fig. 4, a plurality of outer detecting portions 52 are uniformly and fixedly connected to the bottom of the outer wall of the circumference of the housing 5, the bottom surface of the housing 5 is lower than the outer detecting portions 52, and the outer detecting portions 52 can be composed of an explosion-proof intrinsic safety type dust sensor and an explosion-proof intrinsic safety type methane sensor so as to detect the concentration of coal dust and methane in the air in real time. The air delivery duct 55 is formed in the top surface of the interior of the shell 5, the air delivery duct 55 is arranged around the middle shell 4, and meanwhile, the air delivery duct 55 is communicated with an external hose and an air blower outside a mine, so that the air delivery duct 55 can form an air wall around the middle shell 4, and air between the middle shell 4 and the shell 5 is delivered out as much as possible. The top surface inside the housing 5 is provided with a water mist nozzle 54, and the water mist nozzle 54 is communicated with an external hose and a water pump to spray water mist between the housing 5 and the middle housing 4, so that the concentration of coal dust between the housing 5 and the middle housing 4 is reduced. The top surface of the inner part of the shell 5 faces to the bottom surface of the inner part of the middle shell 4, and is fixedly connected with a water inlet valve 51, the water inlet valve 51 can be an explosion-proof intrinsic safety type electromagnetic valve, and a water pump outside a mine continuously pumps water to the water inlet valve 51. The upper part of the vertical side surface of the inner shell 3 is fixedly connected with a liquid level sensor 57, and the liquid level sensor 57 can be an intrinsic safety type photoelectric liquid level switch. The inner wall of the inner shell 3 is fixedly connected with a controller 53, the controller 53 can be a single chip microcomputer, and the controller 53 is electrically connected with an outer detection part 52, a liquid level sensor 57, a water inlet valve 51, a water pump for pumping water to the water mist nozzle 54 and a blower for blowing air to the air delivery duct 55.
Referring to fig. 4 and 5, the outer detecting part 52 inputs an electric signal to the controller 53 in real time and is calculated by the controller 53, and if the concentration of coal dust or methane at the bottom end of the outer case 5 obtained by calculation by the controller 53 is greater than a preset value in the controller 53, the controller 53 controls the water pump for pumping water to the water mist spray head 54 and the blower for blowing air to the air supply duct 55 to operate, so that the water mist spray head 54 sprays water mist and the air supply duct 55 supplies air outside the mine, so that methane or coal dust between the outer case 5 and the middle case 4 is not easily introduced between the middle case 4 and the inner case 3. Meanwhile, the water inlet valve 51 is opened to fill water into the middle shell 4, and when the water level in the middle shell 4 detected by the liquid level sensor 57 is consistent with a low water level preset in the controller 53, the water inlet valve 51 stops working, and the low water level preset in the controller 53 is slightly lower than the bottom surface of the inner shell 3.
Referring to fig. 4, an inner detecting portion 56 is fixedly connected to the top surface of the inside of the outer case 5 at a position opposite to the upper end surface of the middle case 4, and the inner detecting portion 56 and the outer detecting portion 52 are provided in the same manner. The upper portion department fixedly connected with exhaust column 58 in the inner shell 3, exhaust column 58 communicates in the air exhauster that is located outside the mine, and the lower part department fixedly connected with blast pipe 59 in the inner shell 3, blast pipe 59 communicate in the air-blower that is located outside the mine, and inner wall fixedly connected with temperature sensor 38 of inner shell 3, temperature sensor 38 can be thermistor sensor. The internal detection unit 56, the temperature sensor 38, a blower that blows air into the blower tube 59, and suction air into the suction tube 58 are electrically connected to the controller 53.
Referring to fig. 4 and 5, when the inner detecting part 56 detects that the concentration of coal dust or methane in the air above the middle shell 4 exceeds the standard, the controller 53 controls the water inlet valve 51 to operate until the water level in the middle shell detected by the liquid level sensor 57 is consistent with the preset high water level value in the controller 53, the water inlet valve 51 stops operating, and the preset high water level value in the controller 53 is higher than the bottom end height of the inner shell 3 but slightly lower than the upper surface height of the machine table 2, so that the water in the middle shell 4 can quickly submerge the bottom end of the inner shell 3 at this time, and air is not easy to enter the inner shell 3. At the same time, the controller 53 controls the operation of the blower connected to the air supply duct 59 and the air extractor connected to the air suction duct 58 such that the air suction duct 58 draws air out of the inner housing 3 to the outside of the mine and the air supply duct 59 feeds air out of the mine to the inner housing 3. And when the temperature sensor 38 detects that the air temperature in the inner case 3 is higher than the air temperature upper limit value preset in the controller 53, the suction pipe 58 and the blast pipe 59 are also operated synchronously to cool the switch main body 1 and the controller 53.
Referring to fig. 5, the controller 53 is electrically connected with a wireless communication module 39, the wireless communication module 39 may be a CDMA module, the wireless communication module 39 may be integrated inside the controller 53, and when the outer detecting portion 52 detects that the concentration of coal dust or methane exceeds a preset value in the controller 53, the wireless communication module 39 sends a short message to a mobile phone of a designated responsible person to prompt. When the inner detecting part 56 detects that the concentration of coal dust or methane exceeds the preset value in the controller 53, the wireless communication module 39 makes a voice call to the mobile phone of the designated responsible person to warn and timely remove the problem, so that the designated responsible person can timely remove the accumulated water in the middle shell 4 after the concentration of coal dust or methane is normal, so that the water with higher liquid level in the middle shell 4 can be timely removed, and the switch main body 1 is not easy to work in a wet environment for a long time.
Referring to fig. 4, a fixed ring 42 with the same axis as the vertical center line of the housing 5 is fixedly connected to the inner top surface of the housing 5, the fixed ring 42 is communicated with an external water hose, the bottom surface of the fixed ring 42 is coaxially and rotatably connected and communicated with a movable ring 43, a plurality of water spray nozzles 54 are fixedly connected and communicated with the bottom surface of the movable ring 43, and the water spray nozzles 54 are uniformly distributed around the axis of the movable ring 43. The inner wall of the circumference of the moving ring 43 is coaxially and fixedly connected with an inner ring gear 44, the inner part of the inner shell 3 is fixedly connected with a power motor 46, the output shaft of the power motor 46 is coaxially and fixedly connected with a motor gear 45, the motor gear 45 is rotationally connected inside the inner shell 3 and meshed with the inner ring gear 44, the power motor 46 is electrically connected with a controller 53, when the controller 53 controls a water mist spray nozzle 54 to spray water mist, the power motor 46 synchronously works, the moving ring 43 rotates, and the outer shell 5 and the middle shell 4 are fully filled with water mist.
The implementation principle of the mining explosion-proof switch provided by the embodiment of the application is as follows: according to the detection of the concentration of coal dust and methane in the air by the outer detection part 52, the water mist spray head 54, the water inlet valve 51 and the air delivery duct 55 are operated to block and dust fall the air between the middle shell 4 and the outer shell 5, and preliminary water injection is carried out in the middle shell 4, so that the water level is close to the bottom end of the inner shell 3 first, and the subsequent water level can quickly submerge the bottom end of the inner shell 3. Then, according to the detection of the inner detecting portion 56, the water inlet valve 51, the exhaust pipe 58 and the air supply pipe 59 are operated so that the water level in the middle housing 4 floods the bottom end of the inner housing 3, and air outside the mine is supplied into the inner housing 3 and air in the inner housing 3 is supplied outside the mine, reducing the possibility of explosion of the exchange body 1.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (4)
1. The utility model provides a mining explosion-proof switch which characterized in that: comprises a switch main body (1), a machine table (2) for placing the switch main body (1), an inner shell (3) sleeved on the machine table (2) and surrounding the switch main body (1), a middle shell (4) connected with the machine table (2) and sleeved on the inner shell (3) and having a space with the inner shell (3), an outer shell (5) fixedly connected with the inner shell (3) and sleeved on the middle shell (4) and having a space with the middle shell (4), a water inlet valve (51) arranged on the outer shell (5) and capable of injecting water into the middle shell (4), an outer detection part (52) arranged on one end inner wall of the outer shell (5) and used for detecting concentration of coal dust and methane in air, a controller (53) arranged in the inner shell (3) and electrically connected with the outer detection part (52) so as to control the water inlet valve (51) to be opened when the concentration of coal dust or methane is too high, a spray head (54) capable of spraying water mist at one end of the machine table (2) is arranged at the inner wall of the inner shell (3) where the outer shell (5) is connected with the inner wall of the inner shell (3), a spray head (54) capable of spraying water mist at one end of the inner shell (5) which is connected with the inner wall (3) and is capable of sending air out of the air duct (55) where the air duct (2) is close to the air duct (5) where is arranged, the projection of the air delivery duct (55) on the end face of the middle shell (4) surrounds the end face of the middle shell (4) inside, the operation of the water spray nozzle (54) and the air delivery duct (55) is controlled by a controller (53), an inner detection part (56) which is used for detecting the concentration of coal dust and methane in air is arranged at the position, which is opposite to the inner wall of the middle shell (4), of the inner shell (3), the inner detection part (56) is electrically connected with the controller (53), the inner shell (3) is provided with a liquid level sensor (57) which is lower than the position, where the inner shell (3) is sleeved on a machine table (2), the liquid level sensor (57) is electrically connected with the controller (53) so that when the liquid level in the middle shell (4) reaches a preset height, the water spray nozzle (51) stops working, an exhaust pipe (58) which can exhaust air to the outside of a mine and an air supply pipe (59) which is used for supplying air to the inner shell (58) are arranged inside the inner shell (3), the operation controller (53) of the air supply pipe (59) and the exhaust pipe (58) is controlled by the air supply pipe (58), the height of the exhaust pipe (58) is higher than the liquid level sensor (57) which is lower than the water spray nozzle (42) and is connected with the inner shell (43), the movable ring (43) is coaxially and fixedly connected with an inner ring gear (44), the inner ring gear (44) is meshed with a motor gear (45), and the outer wall of the inner shell (3) is provided with a power motor (46) of which the output shaft is coaxially and fixedly connected with the motor gear (45);
when the outer detection part (52) detects that the concentration of coal dust or methane exceeds the standard, the controller (53) controls the water mist spray head (54), the air delivery duct (55) and the water inlet valve (51) to work, and when the water level in the middle shell (4) is about to submerge the inner shell (3) and is sleeved at one end of the machine table (2), the water inlet valve (51) stops working;
when the inner detection part (56) detects that the concentration of coal dust or methane exceeds the standard, the controller (53) controls the water inlet valve (51) to work so that the water in the middle shell (4) is submerged in one end of the inner shell (3) sleeved with the machine table (2).
2. The mining explosion-proof switch of claim 1, wherein: the middle shell (4) is fixedly connected with an anti-contact block (41) which is connected with the inner wall of the outer shell (5) in a sliding way at the outer wall of one end, where the inner shell (3) is inserted.
3. The mining explosion-proof switch of claim 1, wherein: the machine is characterized in that the machine table (2) is fixedly connected with a table ring block (47) for abutting the end face of the inner shell (3), the table ring block (47) is fixedly connected with a plug rod (48) capable of being plugged into the end face of the inner shell (3), a limiting block (49) capable of being plugged into the plug rod (48) is slidably connected in the inner shell (3), one end of the limiting block (49) is hemispherical, and a block spring (31) for forcing the limiting block (49) to be tightly plugged into the plug rod (48) is arranged in the inner shell (3).
4. A mining explosion-proof switch according to claim 3, wherein: stopper (49) fixedly connected with follower rod (32), follower rod (32) keep away from stopper (49) one end shaping and have a piece inclined plane (33), and inner shell (3) outer wall rotation is connected with knob (34), and knob (34) coaxial fixedly connected with short lead screw (35), short lead screw (35) threaded connection have a toper section of thick bamboo (36), and toper section of thick bamboo (36) inside inclined plane butt in piece inclined plane (33), inner shell (3) inside fixedly connected with grafting and sliding connection are in anti-rotation pole (37) of toper section of thick bamboo (36).
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| CN116436877A (en) | 2023-07-14 |
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