Coal mine ventilation auxiliary device

Abstract

The utility model provides a coal mine ventilation auxiliary device, and relates to the field of coal mine ventilation. A fan motor is mounted on the outer side surface of the exhaust cylinder; a water tank is welded to the lower side face of the recycling cabinet. A pump is installed at the position, close to the rear end, of the upper side face of the water tank. A water conveying pipe is installed at a water outlet of the pump. A water distribution pipe is installed at the other end of the water conveying pipe. Water mist nozzles are mounted on the inner sides of the distributive pipes; an intercepting plate is welded on the inner side surface of the air duct; through the arrangement of a water distribution pipe, a water mist nozzle and an intercepting plate, coal dust is effectively prevented from escaping along with exhausted air to pollute the atmospheric environment, and coal slag particles are prevented from impacting and damaging blades of the fan for a long time; the problems that a traditional underground coal mine ventilation system does not have the mine dust and coal cinder particle intercepting function, so that fan blades are damaged, and the external atmospheric environment of a mining area is polluted are solved.

Description

Technical Field

[0001] The utility model belongs to the field of coal mine ventilation, and more specifically, it particularly relates to a coal mine ventilation auxiliary device. Background Art

[0002] The ventilation work in coal mines is a process of continuously sending fresh air from the ground into the mine and discharging the polluted air in the mine outside the mine. The ventilation in coal mines can effectively dilute the dust-containing gas, discharge the air after dusting to the ground, ensure the air quality in the mine, and limit the dust concentration within the safe operation range. At present, during the process of air discharge in coal mines, the dust and coal cinder particles in the coal mines will be directly blown into the air outside the mine by the ventilation pipe system, thus polluting the atmospheric environment near the coal mine ventilation area. In addition, when the coal cinder particles in the ventilation pipe system are blown by the wind to the fan at the end of the exhaust port, the coal cinder particles will continuously impact the fan blades, causing the blade structure to crack and damage, affecting the air exhaust capacity of the fan for the air in the mine. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a coal mine ventilation auxiliary device to solve the problems of damage to the fan blades caused by the lack of dust and coal cinder particle interception function in the traditional underground coal mine ventilation system and environmental pollution of the external atmosphere in the mining area.

[0004] The utility model provides a coal mine ventilation auxiliary device, including a support; a water tank is welded on the upper side of the support, a control machine is installed at a position near the front end of the upper side of the water tank, a wind tunnel is welded at the top end of the support, and an exhaust cylinder is connected to the front side of the wind tunnel by bolts; it also includes a filter tank; a fan frame is welded on the inner side of the exhaust cylinder, a fan motor is installed on the outer side of the exhaust cylinder, a rotating rod is installed on the motor shaft of the fan motor, a driving bevel gear is welded on the outer side of the rotating rod, a driven bevel gear is meshed and connected to the outer side of the driving bevel gear, a transmission rod is welded at the front end of the driven bevel gear, the transmission rod is rotatably connected to the fan frame on the outer side, and a fan disk is welded at the front end of the transmission rod; a recovery cabinet is welded on the outer side of the wind tunnel, a water tank is welded on the lower side of the recovery cabinet, a pump machine is installed at a position near the rear end of the upper side of the water tank, a water delivery pipe is installed at the water outlet of the pump machine, the other end of the water delivery pipe is installed with a water distribution pipe, a ring frame is welded on the inner side of the wind tunnel, the water distribution pipe is installed on the inner side of the ring frame, and an interception plate is welded on the inner side of the wind tunnel; a pull handle is welded on the left side of the filter tank; a square through groove is provided at the center position of the upper side of the water tank.

[0005] In at least some embodiments, the wind tunnel is a through cylinder structure from front to back, a vertically through long through groove is provided at a position near the bottom end of the outer side of the cylinder structure of the wind tunnel, and the front and rear ends of the wind tunnel are both in a reduced diameter structure.

[0006] In at least some embodiments, the number of the intercepting plates is three groups, and the intercepting plates are arranged at equal intervals from front to back on the inner side of the air duct. Each group of intercepting plates inclines backward. The surface of the intercepting plates is densely distributed with air-permeable through holes penetrating from front to back.

[0007] In at least some embodiments, the number of the water distribution pipes is three groups. Each group of water distribution pipes has an annular pipe body structure. Eight groups of through holes are provided inside the annular pipe body structure of the water distribution pipe. Every two groups of through holes are distributed in an annular array around the horizontal central axis of the water distribution pipe. Water mist spray nozzles are installed in the through holes of the water distribution pipe.

[0008] In at least some embodiments, the recycling cabinet has an inverted T-shaped housing structure. A square through groove penetrating up and down is provided on the lower side surface of the recycling cabinet. The square through groove of the recycling cabinet is vertically butted at the square through groove structure of the water tank. Rectangular through grooves are provided on the upper side surface and the left side surface of the recycling cabinet. The upper rectangular through groove of the recycling cabinet is vertically opposite to the long through groove of the air duct. The filter tank is inserted inside the left rectangular through groove of the recycling cabinet.

[0009] In at least some embodiments, the filter tank has a tank body structure with an open upper side. A polyurethane filter cotton net is placed inside the tank body structure of the filter tank. Thirteen groups of long through grooves penetrating up and down are provided at the bottom part of the tank body of the filter tank. The polyurethane filter cotton net covers the upper side of the long through grooves of the filter tank. The long through grooves of the filter tank are vertically opposite to the square through groove of the water tank.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. In the utility model, on the one hand, the dust-lowering water inside the water tank is conveyed by the pump through the water delivery pipe to the water mist spray nozzles installed inside the annular structure of the water distribution pipe and sprayed out, so that the dust-lowering water mist humidifies the mine dust air flowing through the air duct in a mist form, and the coal dust relies on the water mist to fall into the filter tank for collection, avoiding the coal dust from escaping into the atmospheric environment along with the exhaust air. On the other hand, the three groups of intercepting plates intercept the coal slag particles doped in the exhaust air, preventing the coal slag particles from directly hitting the blades of the fan disk and causing damage to the structure of the fan disk, and ensuring the rotation and air extraction operation of the fan disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the utility model.

[0013] Figure 2 is a schematic rear view structural diagram of the utility model.

[0014] Figure 3 is a schematic left view structural diagram of the utility model.

[0015] Figure 4 is a schematic front view structural diagram of the utility model.

[0016] Figure 5 It is a schematic cross-sectional structure diagram of the present utility model.

[0017] Figure 6 is the Figure 5 schematic enlarged structure diagram of part A in the present utility model.

[0018] Figure 7 is the Figure 5 schematic enlarged structure diagram of part B in the present utility model.

[0019] Reference numerals: 1, air duct; 2, exhaust duct; 3, fan motor; 4, fan disc; 5, support; 6, water tank; 7, filter tank; 8, recovery cabinet; 9, pull handle; 10, control machine; 11, water mist nozzle; 12, water delivery pipe; 13, pump; 14, fan frame; 15, intercepting plate; 16, water distribution pipe; 17, polyurethane filter cotton net; 18, ring frame; 19, rotating rod; 20, driving bevel gear; 21, driven bevel gear; 22, transmission rod. Specific embodiments

[0020] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0021] As Figures 1-7 shown, the present utility model provides a coal mine ventilation auxiliary device, including a support 5; a water tank 6 is welded to the upper side surface of the support 5, a control machine 10 is installed at a position near the front end of the upper side surface of the water tank 6, a wind duct 1 is welded to the top end of the support 5, and an exhaust duct 2 is connected to the front side surface of the wind duct 1 by bolts; it further includes a filter tank 7; a fan frame 14 is welded to the inner side surface of the exhaust duct 2, a fan motor 3 is installed on the outer side surface of the exhaust duct 2, a rotating rod 19 is installed on the motor shaft of the fan motor 3, a driving bevel gear 20 is welded to the outer side surface of the rotating rod 19, a driven bevel gear 21 is meshed and connected to the outer side surface of the driving bevel gear 20, a transmission rod 22 is welded to the front end of the driven bevel gear 21, the outer side surface of the transmission rod 22 is rotatably connected to the fan frame 14, and a fan disc 4 is welded to the front end of the transmission rod 22; a recovery cabinet 8 is welded to the outer side surface of the wind duct ˈ, a water tank 6 is welded to the lower side surface of the recovery cabinet 8, a pump 13 is installed at a position near the rear end of the upper side surface of the water tank 6, a water delivery pipe 12 is installed at the water outlet of the pump 13, the other end of the water delivery pipe 12 is installed with a water distribution pipe 16, a ring frame 18 is welded to the inner side surface of the wind duct 1, the water distribution pipe 16 is installed on the inner side surface of the ring frame 18, and an intercepting plate 15 is welded to the inner side surface of the wind duct 1; a pull handle 9 is welded to the left side surface of the filter tank 7; a square through groove is provided at the center position of the upper side surface of the water tank 6.

[0022] In the disclosed embodiment, the air duct 1 is a cylindrical structure that is through-through from front to back. A long through groove that is through-through from top to bottom is provided on the outer side surface of the cylindrical structure of the air duct 1 near the bottom end. The front and rear ends of the air duct 1 are both necked structures. The necked structure ensures that the dust-reducing water flows into the long through groove of the air duct 1 by gravity, thereby preventing the dust-reducing water from overflowing from the openings at the front and rear ends of the air duct 1, causing loss and waste of the dust-reducing water.

[0023] In the disclosed embodiment, there are three groups of intercepting plates 15, which are arranged equidistantly from front to back on the inner side of the air duct 1, and each group of intercepting plates 15 is tilted backward by 15 degrees. The surface of the intercepting plates 15 is densely covered with air-permeable holes that pass through the front and back, and the air circulates through the air-permeable holes of the intercepting plates 15. The three groups of intercepting plates 15 perform triple interception on the coal slag particles entering the air duct 1, so that after the coal slag particles hit the intercepting plates 15, they are rebounded into the long through grooves of the air duct 1 by the tilted intercepting plates 15, and finally roll into the recovery cabinet 8 for collection, thereby reducing the risk of coal slag particles colliding with and damaging the blades of the fan disk 4.

[0024] In the disclosed embodiment, there are three groups of water distribution pipes 16, and each group of water distribution pipes 16 has an annular tube structure. Eight groups of through holes are provided on the inner side of the annular tube structure of the water distribution pipe 16, and every two groups of through holes are distributed in an annular array around the horizontal center axis of the water distribution pipe 16. Water mist nozzles 11 are installed in the through holes of the water distribution pipe 16. Through the water mist nozzles 11 arranged in the annular array, the water flowing out of the through holes of the water distribution pipe 16 is sprayed in the opposite direction toward the horizontal center axis of the wind tube 1 in an atomized form, so that the mine dust air flowing through the wind tube 1 is humidified and dust-reduced, thereby preventing the mine dust from being discharged from the exhaust pipe 2 to pollute the atmospheric environment.

[0025] In the embodiment of the present disclosure, the recovery cabinet 8 is an inverted T-shaped shell structure, and the lower side of the recovery cabinet 8 is provided with a square through groove running through from top to bottom. The square through groove of the recovery cabinet 8 is docked with the T-shaped through groove structure of the water tank 6 from top to bottom. The upper side and left side of the recovery cabinet 8 are both provided with rectangular through grooves. The upper rectangular through groove of the recovery cabinet 8 is opposite to the long through groove of the wind tube 1 from top to bottom, and the filter tank 7 is inserted into the left rectangular through groove of the recovery cabinet 8, which facilitates the filter tank 7 to carry the coal slag particles and pull them out of the recovery cabinet 8 for separation and cleaning.

[0026] In the disclosed embodiment, the filter tank 7 is a tank body structure with the upper side facing the opening, and a polyurethane filter cotton net 17 is placed on the inner side of the tank body structure of the filter tank 7. The bottom of the filter tank 7 is provided with thirteen groups of long through grooves that pass through the top and bottom. The polyurethane filter cotton net 17 covers the upper side of the long through grooves of the filter tank 7. The long through grooves of the filter tank 7 are opposite to the square through grooves of the water tank 6 up and down, so that the coal dust and coal slag particles falling into the filter tank 7 are collected, and the dust-reduced water passes through the polyurethane filter cotton net 17 and flows back to the inside of the water tank 6 through the long through grooves of the filter tank 7 for recycling.

[0027] Specific usage method and function of this embodiment:

[0028] When the utility model is used for coal mine ventilation and exhaust work, the control machine 10 controls the synchronous start of the fan motor 3 and the pump 13 through wires. The fan motor 3 drives the rotation of the driving bevel gear 20 welded to the outer side of the rotating rod 19. The driving bevel gear 20 drives the rotation of the driven bevel gear 21 meshed with the outer side. The driven bevel gear 21 drives the synchronous rotation of the fan disc 4 through the transmission rod 22. The fan disc 4 pumps air, so that the dust-laden air moves from the rear end of the air duct 1 to the front end of the exhaust pipe 2. The dust-laden air flows normally through the air-permeable through holes of the intercepting plate 15. However, the coal slag particles flowing with the dust-laden air impact on the inclined surface of the intercepting plate 15 and bounce into the filtering tank 7 of the recovery cabinet 8 for collection. The pump 13 pumps the dust-suppressing water inside the water tank 6 into the water delivery pipe 12. Then, the dust-suppressing water is conveyed to the three groups of water delivery pipes 12 with a ring structure through the water delivery pipe 12. Finally, the dust-suppressing water is sprayed out in the form of water mist towards the horizontal central axis direction of the air duct 1 through eight groups of water mist nozzles 11 distributed in an annular array on the inner side of the water delivery pipe 12. The dust-suppressing water humidifies the dust-laden air, and the atomized water droplets adsorb the fine coal dust particles in the dust-laden air. Then, relying on gravity, it flows through the long through groove of the air duct 1 to the polyurethane filter cotton net 17 of the filtering tank 7 for filtration and collection. The filtered dust-suppressing water flows into the water tank 6 through the long through groove of the filtering tank 7 and the square through groove of the water tank 6 for recycling of the dust-suppressing water, thus completing the dust suppression and coal slag particle interception work of the coal mine ventilation and exhaust operation.

[0029] The installation method, connection method or setting method of all the above components are common mechanical methods, such as welding, threaded connection, screw connection, etc. And the specific structures, models and coefficient indexes of all its components are its own technologies, and any implementation that can achieve its beneficial effects can be carried out. The above-mentioned fan motor 3, control machine 10, water mist nozzles 11, pump 13, polyurethane filter cotton net 17 are all common devices on the market. When purchased and used, only need to connect according to the operation manual purchased together to be used, so it will not be elaborated here.

[0030] The technical solution of the utility model is not limited within the scope of the embodiments of the utility model. The technical content not described in detail in the utility model is well-known technology.

Claims

1. A coal mine ventilation auxiliary device, comprising a support (5); a water tank (6) is welded to the upper side of the support (5), a control machine (10) is installed at a position near the front end of the upper side of the water tank (6), a wind tunnel (1) is welded to the top end of the support (5), and an exhaust cylinder (2) is connected to the front side of the wind tunnel (1) by bolts; characterized in that: The fan housing (1) further comprises a filter tank (7); a fan frame (14) is welded to the inner side of the exhaust tube (2); a fan motor (3) is mounted on the outer side of the exhaust tube (2); a rotating rod (19) is mounted on the motor shaft of the fan motor (3); a driving bevel gear (20) is welded to the outer side of the rotating rod (19); the driving bevel gear (20) is meshedly connected to the outer side of the driving bevel gear (20); a transmission rod (22) is welded to the front end of the driven bevel gear (21); the outer side of the transmission rod (22) is rotatably connected to the fan frame (14); a fan disk (4) is welded to the front end of the transmission rod (22); the fan housing (1) further comprises a fan housing (1) and a fan motor (3); a fan motor (3) is mounted on the outer side of the exhaust tube (2 ... A recovery cabinet (8) is welded to the outer side surface, a water tank (6) is welded to the lower side surface of the recovery cabinet (8), a pump (13) is installed near the rear end of the upper side surface of the water tank (6), a water delivery pipe (12) is installed at the water outlet of the pump (13), a water distribution pipe (16) is installed at the other end of the water delivery pipe (12), a ring frame (18) is welded to the inner side surface of the wind tube (1), a water distribution pipe (16) is installed on the inner side surface of the ring frame (18), and an interception plate (15) is welded to the inner side surface of the wind tube (1); a pull handle (9) is welded to the left side surface of the filter tank (7); a square through groove is provided at the center position of the upper side surface of the water tank (6).

2. The coal mine ventilation auxiliary device according to claim 1, characterized in that: The air duct (1) is a cylindrical structure that is continuous from front to back. A long through slot that is continuous from top to bottom is provided on the outer side surface of the cylindrical structure of the air duct (1) near the bottom end. The front and rear ends of the air duct (1) are both constricted structures.

3. The coal mine ventilation auxiliary device according to claim 1, wherein: The number of the intercepting plates (15) is three groups, and the intercepting plates (15) are arranged equidistantly from front to back on the inner side of the wind tube (1), and each group of intercepting plates (15) is tilted backward by 15 degrees. The surface of the intercepting plates (15) is densely covered with ventilation holes that pass through from front to back.

4. The coal mine ventilation auxiliary device according to claim 1, characterized in that: The number of the water distribution pipes (16) is three groups, and each group of water distribution pipes (16) has an annular tube structure. Eight groups of through holes are provided on the inner side of the annular tube structure of the water distribution pipe (16), and every two groups of through holes are distributed in an annular array around the horizontal central axis of the water distribution pipe (16). Water mist nozzles (11) are installed in the through holes of the water distribution pipe (16).

5. The coal mine ventilation auxiliary device according to claim 1, characterized in that: The recycling cabinet (8) is an inverted T-shaped shell structure. The lower side of the recycling cabinet (8) is provided with a square through-groove that passes through from top to bottom. The square through-groove of the recycling cabinet (8) is butted up and down at the through-groove structure of the water tank (6). The upper side and left side of the recycling cabinet (8) are both provided with rectangular through-grooves. The upper rectangular through-groove of the recycling cabinet (8) is vertically opposite to the long through-groove of the air duct (1). The filter tank (7) is inserted into the left rectangular through-groove of the recycling cabinet (8).

6. The auxiliary device for coal mine ventilation according to claim 1, wherein: The filter tank (7) is a tank structure with the upper side close to the opening. A polyurethane filter cotton net (17) is placed inside the tank structure of the filter tank (7). Thirteen groups of vertically through-grooves are provided at the bottom of the filter tank (7). The polyurethane filter cotton net (17) covers the upper side of the long grooves of the filter tank (7). The long grooves of the filter tank (7) are vertically opposite to the square grooves of the water tank (6).

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