A fire protection device suitable for coal mining

Abstract

The invention discloses a fire prevention device suitable for coal mine exploitation, and the invention relates to the technical field of coal mine construction. The fire prevention device suitable for coal mine exploitation comprises a driving box, a moving wheel is arranged at the bottom of the driving box, an elastic pad is fixedly connected to the upper surface of the driving box, a supporting bottom plate is fixedly connected to the top of the elastic pad, a heat preservation shell, a cooling device and a master control box are fixedly connected to the upper surface of the supporting bottom plate, a material storage shell is fixedly connected to the inner surface of the heat preservation shell, a water storage tank is fixedly connected to the inner surface of the material storage shell, a sensor module and an alarm are fixedly connected to the top of the master control box, the cooling device comprises a fixing frame and a water pump, the outer surface of the fixing frame is fixedly connected to a well wall heat dissipation shell, the outer surface of the water pump is fixedly connected to a first conduit and a second conduit, and the device can simultaneously cool the inner wall of the mine, cool the coal pile and reduce the coal dust content, thereby greatly improving the working efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine construction, in particular to a fire prevention device suitable for coal mine mining. Background Art

[0002] Coal mining refers to the process of extracting coal resources from coal-rich mining areas. This includes the use of various technologies and equipment to separate and transport coal from underground or on the surface and away from the site. The natural properties of coal are one of the important factors that lead to spontaneous combustion of coal seams in mines. Coal is a carbon-containing fuel that is flammable and combustible. The main elements present are carbon, hydrogen, oxygen and a small amount of nitrogen, sulfur, etc. Coal will volatilize water, kerosene, coal gas and tar during heating. When the coal seam is exposed to the air and reacts with oxygen, the combustible gas in the volatile matter will be released and react with oxygen to produce flames and heat. This combustion reaction is the starting stage of spontaneous combustion. Another factor related to spontaneous combustion of coal seams is coal dust. There is a large amount of coal dust in coal mines. Coal dust is fine particles of coal that easily form a combustible mixture in the air. The spontaneous combustion of coal dust is caused by the oxidation reaction on the surface of coal dust particles. When coal dust comes into contact with oxygen in the air, the coal quality on the surface of coal dust will undergo oxidation reaction, releasing heat and raising the temperature of coal dust, leading to spontaneous combustion.

[0003] In the prior art, water injection is usually used to reduce the temperature of the coal seam, but the work efficiency is low, it is difficult to quickly cool the coal seam, and the coal dust in the air is also difficult to effectively reduce. The possibility of spontaneous combustion of the coal seam is still high, and there is a lack of corresponding equipment to achieve good fire prevention functions. Summary of the invention

[0004] In view of the shortcomings of the existing problems, the present invention provides a fire prevention device suitable for coal mining to solve the existing problems raised in the above background technology.

[0005] To solve the above problems, the present invention is implemented through the following technical solutions: A fire prevention device suitable for coal mine mining, comprising a drive box, a moving wheel is provided at the bottom of the drive box, an elastic pad is fixedly connected to the upper surface of the drive box, a support base plate is fixedly connected to the top of the elastic pad, a heat preservation shell, a cooling device and a master control box are fixedly connected to the upper surface of the support base plate, a material storage shell is fixedly connected to the inner surface of the heat preservation shell, a water storage tank is fixedly connected to the inner surface of the material storage shell, a sensor module and an alarm are fixedly connected to the top of the master control box, the cooling device comprises a fixed frame and a water pump, the outer surface of the fixed frame is fixedly connected to a well wall heat dissipation shell, the outer surface of the water pump is fixedly connected to a first conduit and a second conduit, the output end of the second conduit is fixedly connected to a third conduit, a fourth conduit and a fifth conduit, the output end of the third conduit is fixedly connected to a connecting hose, the output end of the connecting hose is fixedly connected to a coal pile heat dissipation shell, the outer surface of the coal pile heat dissipation shell is fixedly connected to a water outlet mechanism, the output end of the fourth conduit is fixedly connected to a spray head, and the outer surface of the well wall heat dissipation shell is fixedly connected to a temperature sensor and a sixth conduit.

[0006] Preferably, the elastic pads are arranged linearly along the upper surface of the drive box, a display screen and control buttons are provided on the outer surface of the master control box, and a protective top cover is fixedly connected to the top of the sensor module.

[0007] Preferably, a motor is fixedly connected to the middle of the upper surface of the insulation shell, a rotating shaft is fixedly connected to the output end of the motor, an outer surface of the rotating shaft passes through the insulation shell and extends to the inner cavity of the water tank, and a stirring rod is fixedly connected to the bottom end of the rotating shaft.

[0008] Preferably, a water inlet pipe is fixedly connected to the top of the water storage tank, and the outer surface of the water inlet pipe passes through the thermal insulation shell; a feed pipe is fixedly connected to the top of the material storage shell, and a sealing cover is provided on the top of the feed pipe; an exhaust pipe is fixedly connected to the inside of the material storage shell, and the outer surfaces of the feed pipe and the exhaust pipe both pass through the thermal insulation shell.

[0009] Preferably, the bottom of the fixing frame and the water pump are fixedly connected to the upper surface of the supporting base plate, the outer surfaces of the first conduit and the sixth conduit both pass through the insulation shell, the material storage shell and extend to the inner cavity of the water tank, and the output end of the fourth conduit is fixedly connected to the inside of the well wall heat dissipation shell.

[0010] Preferably, the bottom of the fixing frame and the water pump are fixedly connected to the upper surface of the supporting base plate, the outer surfaces of the first conduit and the sixth conduit both pass through the insulation shell, the material storage shell and extend to the inner cavity of the water tank, and the output end of the fourth conduit is fixedly connected to the inside of the well wall heat dissipation shell.

[0011] Preferably, the water outlet mechanism comprises a water outlet pipe, the end of which is fixedly connected to the inside of the heat dissipation shell of the coal pile, the inner surface of the water outlet pipe is fixedly connected to a fixing piece, and an internal groove is provided inside the fixing piece.

[0012] Preferably, the inner surface of the inner groove is slidably connected to a limit plate, the outer surface of the limit plate is fixedly connected to a connecting rod, and the outer surface of the connecting rod is sleeved inside the inner groove.

[0013] Preferably, one end of the connecting rod away from the limiting plate is fixedly connected to a movable plug, the outer surface of the movable plug is squeezed and fitted with the inner surface of the fixing piece, and the outer surface of the connecting rod is sleeved with a return spring.

[0014] Preferably, the end of the return spring is fixedly connected to the outer surface of the limit plate, and the end of the return spring away from the limit plate is fixedly connected to the inner surface of the inner groove.

[0015] The present invention provides a fire prevention device suitable for coal mining, which has the following beneficial effects:

[0016] 1. The fire prevention device suitable for coal mine exploitation, through the cooperation between the heat preservation shell, the material storage shell, the water storage tank and the cooling device, uses the solid dry ice in the material storage shell to cool the water in the water storage tank, and the cooled water can be transferred to the shaft wall heat dissipation shell, the coal pile heat dissipation shell and the spray head as needed. The shaft wall heat dissipation shell can be used to cool the inner wall of the mine, reduce the heat transferred from the high-temperature surrounding rock to the tunnel, thereby reducing the underground temperature. The coal pile heat dissipation shell and the water outlet mechanism can be used to cool the coal pile, reducing the risk of spontaneous combustion of the coal pile. The spray head can fully reduce the coal dust in the mine and reduce the possibility of spontaneous combustion of the coal dust, thereby achieving the fire prevention effect. In addition, the device can simultaneously cool the inner wall of the mine, cool the coal pile and reduce the coal dust content, thereby greatly improving work efficiency.

[0017] 2. The fire prevention device suitable for coal mine exploitation can not only ensure that cold water can be sprayed out from the water outlet pipe through the water outlet mechanism, but also, when the water spraying ends, the movable plug returns to the inside of the fixed part under the elastic force of the return spring, thereby preventing coal from entering the water outlet pipe, so as to avoid clogging of the inside of the water outlet pipe and making it difficult to continue spraying water, thereby facilitating the repeated use of the coal pile heat dissipation shell.

[0018] 3. This fire prevention device is suitable for use in coal mines. Through the sensor module and the alarm, the sensor module integrates the gas sensor and the temperature and humidity sensor into one, which is used to monitor the concentration, humidity, temperature and other parameters of gas such as gas and carbon monoxide in the mine. When a certain data is detected exceeding the preset threshold, the sensor module transmits the signal to the alarm, so that the alarm will sound an alarm in time to remind the staff of abnormal conditions, providing strong support for the prevention and control of spontaneous combustion fires. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 A second perspective structural schematic diagram of the present invention as a whole;

[0021] Figure 3 It is a schematic diagram of the internal structure of the heat-insulating shell of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the master control box of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the cooling device of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the water outlet mechanism of the present invention.

[0025] In the figure: 1, driving box; 2, moving wheel; 3, elastic pad; 4, supporting bottom plate; 5, heat insulation shell; 6, cooling device; 601, fixing frame; 602, water pump; 603, well wall heat dissipation shell; 604, first conduit; 605, second conduit; 606, third conduit; 607, fourth conduit; 608, fifth conduit; 609, connecting hose; 610, coal pile heat dissipation shell; 611, water outlet mechanism; 6111, water outlet pipe; 6112, fixing piece; 6113, movable plug; 611 4. Connecting rod; 6115. Limiting plate; 6116. Internal groove; 6117. Return spring; 612. Spray head; 613. Sixth conduit; 614. Temperature sensor; 615. Solenoid valve; 7. Main control box; 8. Material storage shell; 9. Water storage tank; 10. Motor; 11. Rotating shaft; 12. Stirring rod; 13. Water inlet pipe; 14. Feed pipe; 15. Sealing cap; 16. Exhaust pipe; 17. Display screen; 18. Control button; 19. Sensor module; 20. Alarm; 21. Protective top cover. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0027] Example 1

[0028] like Figure 1-Figure 6As shown, the present invention provides a technical solution: a fire prevention device suitable for coal mine mining, comprising a driving box 1, a moving wheel 2 is arranged at the bottom of the driving box 1, an elastic pad 3 is fixedly connected to the upper surface of the driving box 1, a supporting bottom plate 4 is fixedly connected to the top of the elastic pad 3, a heat preservation shell 5, a cooling device 6 and a main control box 7 are fixedly connected to the upper surface of the supporting bottom plate 4, a material storage shell 8 is fixedly connected to the inner surface of the heat preservation shell 5, a water storage tank 9 is fixedly connected to the inner surface of the material storage shell 8, a sensor module 19 and an alarm 20 are fixedly connected to the top of the main control box 7, the cooling device 6 comprises a fixing frame 601 and a water pump 602, and the outer surface of the fixing frame 601 is fixedly connected to the outer surface of the fixing frame 601. A well wall heat dissipation shell 603 is connected, a first conduit 604 and a second conduit 605 are fixedly connected to the outer surface of the water pump 602, a third conduit 606, a fourth conduit 607 and a fifth conduit 608 are fixedly connected to the output end of the second conduit 605, a connecting hose 609 is fixedly connected to the output end of the third conduit 606, a coal pile heat dissipation shell 610 is fixedly connected to the output end of the connecting hose 609, a water outlet mechanism 611 is fixedly connected to the outer surface of the coal pile heat dissipation shell 610, a spray head 612 is fixedly connected to the output end of the fourth conduit 607, and a temperature sensor 614 and a sixth conduit 613 are fixedly connected to the outer surface of the well wall heat dissipation shell 603.

[0029] The elastic pads 3 are arranged linearly along the upper surface of the driving box 1 , a display screen 17 and control buttons 18 are provided on the outer surface of the master control box 7 , and a protective top cover 21 is fixedly connected to the top of the sensor module 19 .

[0030] A motor 10 is fixedly connected to the middle of the upper surface of the insulation shell 5, and a rotating shaft 11 is fixedly connected to the output end of the motor 10. The outer surface of the rotating shaft 11 passes through the insulation shell 5 and extends to the inner cavity of the water tank 9. A stirring rod 12 is fixedly connected to the bottom end of the rotating shaft 11.

[0031] A water inlet pipe 13 is fixedly connected to the top of the water storage tank 9, and the outer surface of the water inlet pipe 13 passes through the thermal insulation shell 5. A feed pipe 14 is fixedly connected to the top of the material storage shell 8, and a cover 15 is provided on the top of the feed pipe 14. An exhaust pipe 16 is fixedly connected to the inside of the material storage shell 8, and the outer surfaces of the feed pipe 14 and the exhaust pipe 16 both pass through the thermal insulation shell 5.

[0032] The bottom of the fixing frame 601 and the water pump 602 are fixedly connected to the upper surface of the supporting base plate 4. The outer surfaces of the first conduit 604 and the sixth conduit 613 both penetrate the thermal insulation shell 5 and the material storage shell 8 and extend to the inner cavity of the water tank 9. The output end of the fourth conduit 607 is fixedly connected to the inside of the well wall heat dissipation shell 603.

[0033] The outer surfaces of the third conduit 606 , the fourth conduit 607 , the fifth conduit 608 and the sixth conduit 613 are all fixedly connected with electromagnetic valves 615 , the number of water outlet mechanisms 611 is several, and the interiors of the fourth conduit 607 and the sixth conduit 613 are connected to the interior of the well wall heat dissipation shell 603 .

[0034] The water outlet mechanism 611 includes a water outlet pipe 6111 , the end of which is fixedly connected to the inside of the coal pile heat dissipation shell 610 , and a fixing part 6112 is fixedly connected to the inner surface of the water outlet pipe 6111 , and an internal groove 6116 is opened inside the fixing part 6112 .

[0035] The inner surface of the inner groove 6116 is slidably connected to the limit plate 6115 , the outer surface of the limit plate 6115 is fixedly connected to the connecting rod 6114 , and the outer surface of the connecting rod 6114 is sleeved inside the inner groove 6116 .

[0036] One end of the connecting rod 6114 away from the limiting plate 6115 is fixedly connected to a movable plug 6113 , the outer surface of the movable plug 6113 is squeezed and adapted to the inner surface of the fixing member 6112 , and a return spring 6117 is sleeved on the outer surface of the connecting rod 6114 .

[0037] The end of the return spring 6117 is fixedly connected to the outer surface of the limiting plate 6115 , and the end of the return spring 6117 away from the limiting plate 6115 is fixedly connected to the inner surface of the inner groove 6116 .

[0038] When in use, water is injected into the water storage tank 9 through the water inlet pipe 13, and solid dry ice is injected into the storage shell 8 through the feed pipe 14, and the sealing cover 15 is sealed. The storage shell 8 and the water storage tank 9 are made of materials with good thermal conductivity. The solid dry ice cools the water in the water storage tank 9, and the motor 10 is started to drive the rotating shaft 11 to rotate, and the stirring rod 12 rotates and stirs the water, so that the water temperature is reduced faster, and the well wall heat dissipation shell 603 is processed into a size suitable for the construction mine. The remote control driving box 1 drives the moving wheel 2 to drive the entire device to move in the mine. The outer surface of the well wall heat dissipation shell 603 is attached to the inner wall of the mine, and the water pump 602 is started, so that the cold water in the water storage tank 9 is drawn out by the first conduit 604 and transmitted to the second conduit 605, and the fourth conduit is opened. The electromagnetic valve 615 on the pipe 607, cold water enters the interior of the well wall heat dissipation shell 603 through the fourth pipe 607. The well wall heat dissipation shell 603 is made of a material with good thermal conductivity, so that the inner wall of the mine is cooled by the cold water in the well wall heat dissipation shell 603. When the temperature sensor 614 detects that the water temperature in the well wall heat dissipation shell 603 reaches a certain threshold, the electromagnetic valve 615 on the sixth pipe 613 is opened, so that the water in the well wall heat dissipation shell 603 returns to the water storage tank 9 through the sixth pipe 613 to be cooled. The staff holds the coal pile heat dissipation shell 610 and inserts it into the coal pile, opens the electromagnetic valve 615 on the third pipe 606, and cold water enters the coal pile heat dissipation shell 610 through the third pipe 606 and the connecting hose 609 and is sprayed by the water outlet mechanism 611 The cold water flows out from the water outlet pipe 6111. In the initial state, the movable plug 6113 is blocked in the fixing part 6112. The movable plug 6113 moves after being impacted by the high-speed water flow. The limit plate 6115 slides along the inner surface of the inner groove 6116. The return spring 6117 is compressed, and the cold water is sprayed out from the gap between the movable plug 6113 and the fixing part 6112, so that the inside of the coal seam is wetted. When the water outlet mechanism 611 stops spraying water, the movable plug 6113 returns to the inside of the fixing part 6112 under the elastic force of the return spring 6117, so that the coal can be prevented from entering the water outlet pipe 6111. The coal pile heat dissipation housing 610 can be inserted into different positions of the coal pile multiple times as needed, so that the coal pile is quickly cooled down. The solenoid valve 66 on the fifth conduit 608 is opened. 15, so that cold water passes through the fifth conduit 608 and is sprayed out by the spray head 612, and the sprayed water mist absorbs the coal dust in the mine, so that the coal dust falls with the water mist under the action of gravity, and the floating coal dust in the mine is fully reduced. The whole device is centrally controlled by the main control box 7. The sensor module 19 integrates a gas sensor and a temperature and humidity sensor in one, and is used to monitor the concentration, humidity, temperature and other parameters of gas such as gas and carbon monoxide in the mine. When a certain data is detected to exceed a preset threshold, the sensor module 19 transmits a signal to the alarm 20, so that the alarm 20 promptly issues an alarm to remind the staff of abnormal conditions. Through the provided heat-insulating shell 5, an inert gas is arranged in the heat-insulating shell 5, and the heat-insulating effect is achieved by utilizing the low activity of the inert gas.Reduce the impact of the temperature in the mine on the solid dry ice in the storage shell 8.

[0039] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A fire prevention device suitable for use in coal mining, comprising a drive box (1), characterized in that: The bottom of the driving box (1) is provided with a moving wheel (2); the upper surface of the driving box (1) is fixedly connected to an elastic pad (3); the top of the elastic pad (3) is fixedly connected to a supporting base plate (4); the upper surface of the supporting base plate (4) is fixedly connected to a heat-insulating shell (5), a cooling device (6) and a main control box (7); the inner surface of the heat-insulating shell (5) is fixedly connected to a material storage shell (8); the inner surface of the material storage shell (8) is fixedly connected to a water storage tank (9); the top of the main control box (7) is fixedly connected to a sensor module (19) and an alarm (20); the cooling device (6) comprises a fixing frame (601) and a water pump (602); the outer surface of the fixing frame (601) is fixedly connected to a well wall heat dissipation shell (603); The outer surface of the water pump (602) is fixedly connected with a first conduit (604) and a second conduit (605); the output end of the second conduit (605) is fixedly connected with a third conduit (606), a fourth conduit (607) and a fifth conduit (608); the output end of the third conduit (606) is fixedly connected with a connecting hose (609); the output end of the connecting hose (609) is fixedly connected with a coal pile heat dissipation shell (610); the outer surface of the coal pile heat dissipation shell (610) is fixedly connected with a water outlet mechanism (611); the output end of the fourth conduit (607) is fixedly connected with a spray head (612); and the outer surface of the well wall heat dissipation shell (603) is fixedly connected with a temperature sensor (614) and a sixth conduit (613).

2. A fire protection device suitable for coal mining according to claim 1, characterized in that: The elastic pads (3) are linearly arranged along the upper surface of the drive box (1); the outer surface of the master control box (7) is provided with a display screen (17) and control buttons (18); and the top of the sensor module (19) is fixedly connected with a protective top cover (21).

3. A fire protection device suitable for coal mining according to claim 1, characterized in that: A motor (10) is fixedly connected to the middle of the upper surface of the heat-insulating shell (5), a rotating shaft (11) is fixedly connected to the output end of the motor (10), the outer surface of the rotating shaft (11) passes through the heat-insulating shell (5) and extends to the inner cavity of the water storage tank (9), and a stirring rod (12) is fixedly connected to the bottom end of the rotating shaft (11).

4. A fire protection device suitable for coal mining according to claim 1, characterized in that: The top of the water storage tank (9) is fixedly connected to a water inlet pipe (13), the outer surface of which passes through the heat-insulating shell (5); the top of the material storage shell (8) is fixedly connected to a feed pipe (14), the top of which is provided with a sealing cover (15); the interior of the material storage shell (8) is fixedly connected to an exhaust pipe (16), the outer surfaces of which both pass through the heat-insulating shell (5).

5. The fire protection device suitable for coal mining according to claim 1 is characterized in that: The bottom of the fixing frame (601) and the water pump (602) are fixedly connected to the upper surface of the supporting base plate (4); the outer surfaces of the first conduit (604) and the sixth conduit (613) penetrate the heat-insulating shell (5) and the material storage shell (8) and extend to the inner cavity of the water storage tank (9); and the output end of the fourth conduit (607) is fixedly connected to the inside of the well wall heat dissipation shell (603).

6. A fire protection device suitable for coal mining according to claim 1, characterized in that: The outer surfaces of the third conduit (606), the fourth conduit (607), the fifth conduit (608) and the sixth conduit (613) are all fixedly connected with electromagnetic valves (615), the number of the water outlet mechanisms (611) is several, and the interiors of the fourth conduit (607) and the sixth conduit (613) are connected to the interior of the well wall heat dissipation shell (603).

7. The fire protection device suitable for coal mining according to claim 1, characterized in that: The water outlet mechanism (611) comprises a water outlet pipe (6111), the end of which is fixedly connected to the inside of the coal pile heat dissipation shell (610), the inner surface of the water outlet pipe (6111) is fixedly connected to a fixing member (6112), and an internal groove (6116) is provided inside the fixing member (6112).

8. A fire prevention device suitable for coal mining according to claim 7, characterized in that: The inner surface of the inner groove (6116) is slidably connected to a limit plate (6115), the outer surface of the limit plate (6115) is fixedly connected to a connecting rod (6114), and the outer surface of the connecting rod (6114) is sleeved inside the inner groove (6116).

9. A fire prevention device suitable for coal mining according to claim 8, characterized in that: One end of the connecting rod (6114) away from the limiting plate (6115) is fixedly connected to a movable plug (6113), the outer surface of the movable plug (6113) is squeezed and adapted to the inner surface of the fixing member (6112), and the outer surface of the connecting rod (6114) is sleeved with a return spring (6117).

10. A fire prevention device suitable for coal mining according to claim 9, characterized in that: The end of the return spring (6117) is fixedly connected to the outer surface of the limiting plate (6115), and the end of the return spring (6117) away from the limiting plate (6115) is fixedly connected to the inner surface of the internal groove (6116).

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