Air heater for coal mine wellhead

Abstract

The invention discloses a hot-air blower for a coal mine wellhead. The hot-air blower is mainly composed of a support, a mounting plate, a fan cylinder, a heat exchange cylinder and the like. An electromagnetic coil is spirally wound on the outer side of the heat exchange cylinder, a heat insulation sleeve is arranged, and heat exchange fins and a guide cylinder are circumferentially arrayed in the heat exchange cylinder. The driving motor drives the fan blades to generate airflow, the electromagnetic coil is electrified to heat the heat exchange cylinder, and heat is transferred to the heat exchange fins to enable the airflow to be heated and discharged. And a cleaning mechanism is arranged in the heat exchange cylinder and is linked with the driving motor to automatically clean impurities in the heat exchange fins. Moving wheels, a trailer frame and the like are arranged at the bottom of the support to facilitate movement, and supporting legs and hydraulic cylinders guarantee stable work. The air heater is high in heating efficiency, good in safety, flexible to move, automatic in cleaning and capable of meeting the heating requirement of a coal mine wellhead, providing a suitable environment for equipment and personnel, prolonging the service life of the equipment and reducing the maintenance cost.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine equipment, in particular to a hot air blower for a coal mine wellhead. Background Art

[0002] The coal mine wellhead hot air blower is a heating device specially designed for coal mine wellheads. In cold climates, it prevents equipment and pipelines at the wellhead and nearby areas from freezing and being damaged due to low temperatures. It ensures the normal operation of the coal mine production system, such as lifting equipment and ventilation facilities, which work in a suitable temperature environment to reduce mechanical failures caused by low temperatures. It provides a relatively warm working environment for wellhead workers and improves work efficiency and safety.

[0003] In the prior art, there is a low-temperature heat pump hot air blower for coal mine wellheads with a publication number of "CN117948711B". It includes a base, the base is fixedly connected to an exhaust fan, the base is fixedly connected to a heat exchange shell connected to the exhaust fan outlet, the base is fixedly connected to a heat exchange water tank, the base is fixedly connected to an expansion valve and a compressor, the heat exchange shell is fixedly connected to a heat dissipation pipeline, the two ends of the heat dissipation pipeline are respectively connected to the expansion valve and the compressor, a heat absorption pipeline is arranged in the heat exchange water tank, the two ends of the heat absorption pipeline are respectively connected to the expansion valve and the compressor, the heat exchange shell is fixedly connected to a temperature sensor, and the outlet pipe is provided with a switching component. By sealing the initial low-temperature gas into the shell, and performing heat exchange between the circulating gas and the medium in the heat dissipation pipeline, the gas is injected into the well after being raised to the required temperature, so as to avoid the low temperature of the gas initially blown into the well, which causes the heat to be lost before penetrating into the well.

[0004] However, the existing technology still has major deficiencies, such as:

[0005] The heating method used in the prior art has the problem of slow heating speed. Some traditional hot air blowers may use resistance wire heating and other methods, which result in the failure to meet the heating demand in a timely manner in the coal mine wellhead environment where rapid temperature rise is required, and the heat exchange area of ​​the traditional heating method is not efficient enough. The contact area between the airflow and the heating component is small, and the heat exchange efficiency is not high, which affects the overall heating effect;

[0006] In coal mine environments, many existing hot air blowers may not have special cleaning mechanisms to clean impurities on heat exchange components. Even if some hot air blowers have cleaning devices, they still need to be cleaned manually on a regular basis, which not only increases maintenance costs, but may also cause a decrease in heat exchange efficiency due to untimely cleaning, affecting the normal operation of the hot air blower. Summary of the invention

[0007] The object of the present invention is to provide a hot air blower for a coal mine shaft to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A hot air blower for a coal mine shaft, comprising a bracket, a mounting plate fixedly arranged on the bracket, a fan cylinder and a heat exchange cylinder fixedly arranged on the mounting plate, the fan cylinder and the heat exchange cylinder are fixedly connected, a fan support frame fixedly arranged in the fan cylinder, a drive motor fixedly arranged on the fan support frame, a blade fixing seat fixedly arranged on the shaft of the drive motor, and a plurality of fan blades fixedly arranged on the blade fixing seat;

[0010] An electromagnetic coil is wound in a spiral form on the outer side of the heat exchange tube, a plurality of heat exchange fins in a circumferential array are fixedly arranged in the heat exchange tube along the axial direction of the heat exchange tube, and a plurality of guide tubes are fixedly arranged on the heat exchange fins;

[0011] When the driving motor rotates to drive the fan blades to rotate and generate airflow, the electromagnetic coil is energized and generates heat to heat the heat exchange tube. After the heat exchange tube is heated, the heat is transferred to a plurality of heat exchange fins, thereby increasing the heating area of ​​the airflow and the heat exchange tube. The airflow is heated by the heat exchange tube and the heat exchange fins and discharged;

[0012] The heat exchange cylinder is also provided with a plurality of cleaning mechanisms for cleaning the heat exchange fins.

[0013] Preferably, the cleaning mechanism includes a plurality of first guide pillars fixedly arranged between the heat exchange tube and the guide tube, the plurality of first guide pillars fixedly arranged on one side of the heat exchange fins, a first slider slidably arranged on the first guide pillars, a brush plate fixedly arranged at both ends of the first slider, a plurality of bristles fixedly arranged on the brush plate, the bristles are in contact with the heat exchange fins, and when the first slider slides on the first guide pillars, the brush plate cleans impurities attached to the heat exchange fins.

[0014] Preferably, the cleaning mechanism also includes a first rotating shaft rotatably arranged between the heat exchange cylinder and the guide cylinder, a reciprocating screw is fixedly arranged on the first rotating shaft, the first slider is simultaneously sleeved on the first guide column and the reciprocating screw, and the first slider is provided with a rocking block cooperating with the reciprocating screw. When the first rotating shaft rotates and drives the reciprocating screw to rotate, the first slider realizes reciprocating motion on the reciprocating screw and the first guide column through the rocking block, thereby realizing the brush plate to clean impurities attached to the heat dissipation fins.

[0015] Preferably, the first rotating shaft in the cleaning mechanism passes through the guide cylinder, a driven bevel gear is fixedly arranged at the end of the first rotating shaft, a plurality of first supporting frames are fixedly arranged in the guide cylinder, a second rotating shaft is rotatably arranged in the plurality of first supporting frames, a driving bevel gear is fixedly arranged at one end of the second rotating shaft, and the driving bevel gear is meshed with the driven bevel gear for transmission;

[0016] When the second rotating shaft rotates and drives the active bevel gear to rotate, it drives the driven bevel gears to rotate, the rotation of the driven bevel gears drives the first rotating shaft to rotate, the rotation of the first rotating shaft drives the reciprocating screw to rotate, and the reciprocating screw drives the first slider to reciprocate linearly on the first guide column through the rocking block, so that the brush plates can clean the impurities attached to the heat dissipating fins.

[0017] Preferably, a second support frame is fixedly provided in the guide tube, a planetary reducer is fixedly provided on the second support frame, the shaft of the drive motor is fixedly connected to the input end of the planetary reducer, and the second rotating shaft is fixedly connected to the output end of the planetary reducer; when the drive motor drives the fan blades to rotate to generate airflow, the decelerated power is also transmitted to the second rotating shaft through the planetary reducer, and the second rotating shaft transmits the power to several cleaning mechanisms through the active bevel gear and several driven bevel gears, so as to realize the cleaning of several heat exchange fins by several brush plates.

[0018] Preferably, a second guide column is fixedly arranged between the heat exchange tube and the guide tube, the second guide column is also arranged on one side of the heat exchange fin, the second guide column is arranged on the opposite side of the first guide column, a second slider is slidably arranged on the second guide column, and the other end of the brush plate is fixedly arranged on the second slider.

[0019] Preferably, an air intake air guide cover and an exhaust air guide cover are fixedly provided at both ends of the guide tube, and the shaft of the drive motor passes through the air intake air guide cover.

[0020] Preferably, a wheel frame is fixedly provided at the bottom of the bracket, a movable wheel is rotatably provided on the wheel frame, a trailer frame is also rotatably provided on the bracket, a liftable screw-type jack is fixedly provided on the trailer frame, a universal wheel is fixedly provided at one end of the screw-type jack, and a handle is rotatably provided on the screw-type jack.

[0021] Preferably, a support leg and a hydraulic cylinder are rotatably provided on the bracket, and a movable end of the hydraulic cylinder is rotatably connected to an end of the support leg. When the hydraulic cylinder is extended or retracted, the support leg can be driven to rotate on the bracket.

[0022] Preferably, a heat insulating sleeve is fixedly provided on the outer side of the electromagnetic coil.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The electromagnetic coil is spirally wound on the outside of the heat exchange tube. The heat generated after power is turned on can be quickly transferred to the heat exchange tube. The heat exchange fins in the heat exchange tube are distributed in a circular array, which greatly increases the heating area of ​​the airflow and the heat exchange tube, allowing the airflow to fully absorb heat, improve the heating efficiency of the hot air blower, and meet the heating needs of the coal mine wellhead.

[0025] 2. The setting of the heat insulation sleeve prevents the heat generated by the electromagnetic coil from being excessively dissipated to the outside, further improving the thermal efficiency, while also reducing the temperature of the environment around the hot air blower and improving safety.

[0026] 3. The wheel frame and mobile wheel design at the bottom of the bracket make it easy to move the hot air blower between different work sites and adapt to various working environments. The liftable screw jack and universal wheel on the trailer frame, as well as the handle setting, make it convenient for operators to turn and adjust the position when they need to move the hot air blower, thus improving the flexibility of the hot air blower.

[0027] 4. The support legs on the bracket cooperate with the hydraulic cylinder. When the hot air blower needs to work in a fixed position, the hydraulic cylinder extends out to push the support legs to rotate downward to contact the ground, providing stable support for the hot air blower, preventing the hot air blower from shaking or moving during operation, and ensuring the stability of the hot air blower.

[0028] 5. The air inlet shroud and exhaust shroud at both ends of the guide tube can guide the airflow to enter and exit the hot air blower smoothly. The air inlet shroud allows the airflow to fully exchange heat with the heat exchange tube and heat exchange fins, improving the heat exchange efficiency; the exhaust shroud ensures that the hot air blower can effectively transport the hot air flow to the required place to meet the heating requirements of the coal mine wellhead.

[0029] 6. The cleaning mechanism is linked with the drive motor to automatically clean the impurities attached to the heat exchange fins while the hot air blower is working. The bristles fit the heat exchange fins. When the first slider reciprocates on the first guide column, the bristles on the brush plate can promptly remove the impurities on the heat exchange fins, avoiding the accumulation of impurities that affect the heat exchange effect, and ensuring the stability of the heat exchange efficiency.

[0030] 7. No additional power source is required to drive the cleaning mechanism. The driving motor is used to transmit power to the cleaning mechanism through the planetary reducer, which realizes efficient use of energy and reduces the operating cost of the equipment. This linkage design realizes the automation of the cleaning process without manual intervention, reduces the workload of operators, and improves work efficiency. At the same time, it also avoids the problem of reduced heat exchange efficiency caused by untimely or incomplete manual cleaning. And continuously cleaning impurities on the heat exchange fins can extend the service life of the hot air blower and reduce the maintenance frequency and repair cost of the equipment. Ensure that the hot air blower always maintains good heat exchange performance during long-term use and improve the reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device of the present invention;

[0032] Figure 2 It is a three-dimensional structural schematic diagram of the overall device of the present invention from another viewing angle;

[0033] Figure 3 It is a schematic diagram of the three-dimensional structure of the electromagnetic coil of the present invention;

[0034] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the fan cylinder of the present invention;

[0035] Figure 5 It is a schematic diagram of the three-dimensional structure of the cleaning mechanism of the present invention.

[0036] In the figure: 1, bracket; 2, mounting plate; 3, fan cylinder; 4, heat exchange cylinder; 5, fan support frame; 6, drive motor; 7, blade fixing seat; 8, fan blade; 9, electromagnetic coil; 10, heat exchange fin; 11, guide cylinder; 12, first guide column; 13, first slider; 14, brush plate; 15, brush hair; 16, first rotating shaft; 17, reciprocating screw; 18, swing block; 19, driven bevel gear; 20 , first support frame; 21, second rotating shaft; 22, driving bevel gear; 23, second support frame; 24, planetary reducer; 25, air intake shroud; 26, exhaust shroud; 27, wheel frame; 28, moving wheel; 29, trailer frame; 30, screw jack; 31, universal wheel; 32, handle; 33, support leg; 34, hydraulic cylinder; 35, heat insulation sleeve; 36, second guide column; 37, second slider. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-5 , the present invention provides a technical solution:

[0039] Embodiment 1:

[0040] A hot air blower for a coal mine wellhead is mainly composed of a bracket 1, a mounting plate 2, a fan cylinder 3, a heat exchange cylinder 4 and other components. The bracket 1 plays a role in supporting the entire hot air blower, and the mounting plate 2 is fixedly arranged on the bracket 1 by welding or bolting. The fan cylinder 3 and the heat exchange cylinder 4 are also fixedly installed on the mounting plate 2 by welding or bolting, and the fan cylinder 3 and the heat exchange cylinder 4 are fixedly connected by flange connection and other methods.

[0041] In the fan cylinder 3, a fan support frame 5 is fixedly arranged by welding, and a driving motor 6 is installed on the fan support frame 5. The shaft of the driving motor 6 is fixed to the blade fixing seat 7 by key connection or the like, and a plurality of fan blades 8 are fixedly arranged on the blade fixing seat 7. When the driving motor 6 is started, the shaft of the driving motor 6 rotates to drive the blade fixing seat 7 and the fan blades 8 to rotate, thereby generating airflow.

[0042] The outer side of the heat exchange tube 4 is wound with an electromagnetic coil 9 in a spiral form, and the electromagnetic coil 9 can be installed on the heat exchange tube 4 by tying or clamping, and a heat insulation sleeve 35 is fixedly arranged on the outer side of the electromagnetic coil 9. The heat insulation sleeve 35 is tightly fitted with the electromagnetic coil 9 to isolate heat, prevent the heat generated by the electromagnetic coil 9 from being excessively dissipated to the outside, and improve the heating efficiency of the hot air blower.

[0043] In terms of connection relationship, the heat insulating sleeve 35 can be installed on the outside of the electromagnetic coil 9 by wrapping or nesting. For example, the heat insulating sleeve 35 can be designed with a suitable size so that it can be tightly sleeved on the electromagnetic coil 9, or the heat insulating sleeve 35 can be fixed around the electromagnetic coil 9 by using fixing parts such as clamps, straps, etc., to ensure that the heat insulating sleeve 35 will not loosen or fall off during the operation of the hot air blower.

[0044] When the electromagnetic coil 9 is energized, heat is generated to heat the heat exchange tube 4. A plurality of heat exchange fins 10 in a circumferential array are fixedly arranged in the heat exchange tube 4 along its axial direction, and the heat exchange fins 10 can be connected to the heat exchange tube 4 by welding or other methods. The arrangement of the heat exchange fins 10 increases the heating area of ​​the airflow and the heat exchange tube 4, so that the airflow can fully absorb heat. A plurality of heat exchange fins 10 are fixedly arranged with a guide tube 11, and the guide tube 11 and the heat exchange fins 10 can be fixed by welding or bolting.

[0045] In order to clean the impurities attached to the heat exchange fins 10, a cleaning mechanism is also provided in the heat exchange tube 4. The cleaning mechanism includes a plurality of first guide pillars 12 fixedly provided between the heat exchange tube 4 and the guide tube 11, and the first guide pillars 12 can be fixed to one side of the heat exchange fins 10 by welding or bolting. A first slider 13 is slidably provided on the first guide pillar 12, and the connection between the first slider 13 and the first guide pillar 12 can be clearance-fitted, so that the first slider 13 can slide smoothly on the first guide pillar 12. Brush plates 14 are fixedly provided at both ends of the first slider 13, and the brush plates 14 can be connected to the first slider 13 by welding or bolting. A plurality of bristles 15 are fixedly provided on the brush plate 14, and the bristles 15 are in contact with the heat exchange fins 10. When the first slider 13 slides on the first guide pillar 12, the bristles 15 on the brush plate 14 can clean the impurities attached to the heat exchange fins.

[0046] The cleaning mechanism also includes a first rotating shaft 16 rotatably arranged between the heat exchange tube 4 and the guide tube 11. The first rotating shaft 16 can be rotatably installed with the heat exchange tube 4 and the guide tube 11 by means of bearing connection or the like. A reciprocating screw 17 is fixedly arranged on the first rotating shaft 16. The reciprocating screw 17 can be fixed to the first rotating shaft 16 by means of welding or key connection or the like. The first slider 13 is simultaneously sleeved on the first guide column 12 and the reciprocating screw 17. The first slider 13 is provided with a rocking block 18 that cooperates with the reciprocating screw 17. When the first rotating shaft 16 rotates, the reciprocating screw 17 is driven to rotate. Due to the cooperation of the rocking block 18 and the reciprocating screw 17, the first slider 13 can realize reciprocating motion on the reciprocating screw 17 and the first guide column 12, thereby driving the brush plate 14 to clean the impurities on the heat dissipation fins.

[0047] The first rotating shaft 16 in the cleaning mechanism passes through the guide tube 11, and a driven bevel gear 19 is fixedly provided at the end of the first rotating shaft 16, and the driven bevel gear 19 can be fixed to the first rotating shaft 16 by means of key connection or the like. A plurality of first support frames 20 are fixedly provided in the guide tube 11, and the first support frames 20 can be fixed to the guide tube 11 by means of welding or bolt connection or the like. A second rotating shaft 21 is rotatably provided in the plurality of first support frames 20, and the second rotating shaft 21 and the first support frames 20 can be rotatably installed by means of bearing connection or the like. A driving bevel gear 22 is fixedly provided at one end of the second rotating shaft 21, and the driving bevel gear 22 can be fixed to the second rotating shaft 21 by means of key connection or the like, and the driving bevel gear 22 is meshed with the driven bevel gear 19 for transmission.

[0048] When the second rotating shaft 21 rotates, it drives the driving bevel gear 22 to rotate, and then drives the driven bevel gears 19 to rotate. The driven bevel gear 19 rotates to drive the first rotating shaft 16 to rotate, and the first rotating shaft 16 rotates to drive the reciprocating screw 17 to rotate. The reciprocating screw 17 drives the first slider 13 to reciprocate on the first guide column 12 through the rocking block 18, so that the brush plates 14 clean the impurities attached to the heat dissipating fins.

[0049] A second support frame 23 is also fixedly provided in the guide tube 11, and the second support frame 23 can be fixed to the guide tube 11 by welding or bolting. A planetary reducer 24 is fixedly provided on the second support frame 23, and the planetary reducer 24 can be fixed to the second support frame 23 by bolting. The shaft of the drive motor 6 is fixedly connected to the input end of the planetary reducer 24, and the second rotating shaft 21 is fixedly connected to the output end of the planetary reducer 24. When the drive motor 6 drives the fan blades 8 to rotate and generate airflow, the decelerated power is also transmitted to the second rotating shaft 21 through the planetary reducer 24. The second rotating shaft 21 transmits power to a number of cleaning mechanisms through the active bevel gear 22 and a number of driven bevel gears 19, so that a number of brush plates 14 clean a number of heat exchange fins 10.

[0050] Embodiment 2:

[0051] In the structure of the hot air blower, a second guide column 36 is fixedly arranged between the heat exchange cylinder 4 and the guide cylinder 11. In terms of connection, the second guide column 36 can be firmly fixed between the heat exchange cylinder 4 and the guide cylinder 11 by welding or bolting. In addition, the second guide column 36 is also arranged on one side of the heat exchange fin 10, specifically on the opposite side of the first guide column 12. Such a layout can make the brush plate 14 more stable when moving to clean the heat exchange fin 10.

[0052] A second slider 37 is slidably disposed on the second guide post 36. A clearance fit is adopted between the second slider 37 and the second guide post 36, so that the second slider 37 can slide smoothly on the second guide post 36. The other end of the brush plate 14 is fixedly disposed on the second slider 37, and the connection method can be welding or bolt connection. In this way, when the first slider 13 slides on the first guide post 12, the second slider 37 is driven by the brush plate 14 to slide synchronously on the second guide post 36, thereby ensuring that the brush plate 14 can remain stable during the process of cleaning the heat exchange fins 10, thereby improving the cleaning effect.

[0053] An air intake shroud 25 and an exhaust shroud 26 are fixedly disposed at both ends of the guide tube 11. The air intake shroud 25 and the exhaust shroud 26 can be fixed to the guide tube 11 by welding or bolting. The shaft of the drive motor 6 passes through the air intake shroud 25, and a certain gap is maintained between the shaft of the drive motor 6 and the air intake shroud 25 to ensure that the shaft of the drive motor 6 can rotate freely without friction with the air intake shroud 25.

[0054] The function of the air inlet guide 25 is to guide the airflow to smoothly enter the guide tube 11 and the heat exchange fin 10 area, so that the airflow can fully exchange heat with the heat exchange tube 4 and the heat exchange fin 10. The exhaust guide 26 guides the heated airflow out to ensure that the hot air blower can effectively transport the hot airflow to where it is needed.

[0055] Embodiment three:

[0056] A wheel frame 27 is fixedly provided at the bottom of the bracket 1. The wheel frame 27 can be fixed to the bracket 1 by welding or bolting. A moving wheel 28 is rotatably provided on the wheel frame 27, and the moving wheel 28 is connected to the wheel frame 27 by a bearing so that the moving wheel 28 can rotate freely. Such a design allows the hot air blower to be easily moved to meet the needs of different work sites.

[0057] A trailer frame 29 is also rotatably provided on the bracket 1. The trailer frame 29 is connected to the bracket 1 by a rotating shaft, so that the trailer frame 29 can rotate relative to the bracket 1. A liftable screw jack 30 is fixedly provided on the trailer frame 29. The screw jack 30 can be fixed to the trailer frame 29 by welding or bolting. A universal wheel 31 is fixedly provided at one end of the screw jack 30, and the universal wheel 31 is fixed to the screw jack 30 by bolting or welding. When the hot air blower needs to be moved, the screw jack 30 can be raised to make the universal wheel 31 contact the ground, and the hot air blower can be pushed and the flexibility of the universal wheel 31 can be used to realize the steering and movement of the hot air blower.

[0058] A handle 32 is rotatably provided on the screw jack 30. The handle 32 is connected to the screw jack 30 via a rotating shaft, so that the operator can adjust the height of the screw jack 30 by rotating the handle 32.

[0059] The support leg 33 and the hydraulic cylinder 34 are rotatably provided on the bracket 1. The support leg 33 is connected to the bracket 1 by a rotating shaft, so that the support leg 33 can rotate on the bracket 1. The movable end of the hydraulic cylinder 34 is rotatably connected to the end of the support leg 33, which can also be achieved by a rotating shaft connection. When the hydraulic cylinder 34 is extended and retracted, it can drive the support leg 33 to rotate on the bracket 1. When the hot air blower needs to be fixed at a certain position for work, the hydraulic cylinder 34 can be extended to push the support leg 33 to rotate downward so that the support leg 33 contacts the ground, thereby providing stable support for the hot air blower and preventing the hot air blower from shaking or moving during operation.

[0060] Working principle: During the use of the present invention, when the drive motor 6 is started, it drives the fan blades 8 to rotate to generate airflow. At the same time, the electromagnetic coil 9 is energized to generate heat to heat the heat exchange tube 4. After the heat exchange tube 4 is heated, the heat is transferred to the heat exchange fins 10. The airflow is heated when passing through the heat exchange tube 4 and the heat exchange fins 10, and then discharged. During the operation of the hot air blower, the drive motor 6 transfers power to the second rotating shaft 21 through the planetary reducer 24. The second rotating shaft 21 drives the active bevel gear 22 to rotate, and the active bevel gear 22 drives the driven bevel gear 19 to rotate, thereby rotating the first rotating shaft 16. The reciprocating screw 17 on the first rotating shaft 16 drives the first slider 13 to reciprocate on the first guide column 12 through the rocking block 18, so that the bristles 15 on the brush plate 14 clean the impurities on the heat exchange fins 10 to ensure the heat exchange efficiency.

[0061] Specifically, while the drive motor 6 drives the fan blades 8 to rotate and generate airflow, its shaft is fixedly connected to the input end of the planetary reducer 24 on the second support frame 23 in the guide tube 11. The power of the drive motor 6 is decelerated by the planetary reducer 24 and then transmitted to the second rotating shaft 21 from the output end of the planetary reducer 24.

[0062] The second rotating shaft 21 is rotatably arranged in the guide tube 11 through the first supporting frame 20 , and the driving bevel gear 22 fixedly arranged at one end thereof rotates along with the second rotating shaft 21 .

[0063] The driving bevel gear 22 is meshed with the driven bevel gear 19 fixedly arranged at the end of the first rotating shaft 16 in the cleaning mechanism. When the driving bevel gear 22 rotates, it drives a plurality of driven bevel gears 19 to rotate, thereby rotating the first rotating shaft 16.

[0064] A reciprocating screw 17 is fixedly disposed on the first rotating shaft 16 , the first sliding block 13 is sleeved on the first guide column 12 and the reciprocating screw 17 at the same time, and a rocking block 18 matched with the reciprocating screw 17 is disposed on the first sliding block 13 .

[0065] When the first rotating shaft 16 rotates, the reciprocating screw 17 is driven to rotate. Due to the cooperation between the rocking block 18 and the reciprocating screw 17, the first sliding block 13 realizes reciprocating motion on the reciprocating screw 17 and the first guide column 12.

[0066] Brush plates 14 are fixedly provided at both ends of the first sliding block 13 . A plurality of brush bristles 15 are fixedly provided on the brush plates 14 . The brush bristles 15 are in contact with the heat exchange fins 10 .

[0067] When the first slider 13 reciprocates on the first guide pillar 12 , the brush plate 14 moves accordingly, and the bristles 15 on the brush plate 14 clean the impurities attached to the heat exchange fins 10 .

[0068] A second guide post 36 is fixedly disposed between the heat exchange cylinder 4 and the guide cylinder 11. The second guide post 36 is located on the opposite side of the first guide post 12 and is also disposed on one side of the heat exchange fin 10. A second slider 37 is slidably disposed on the second guide post 36, and the other end of the brush plate 14 is fixedly disposed on the second slider 37.

[0069] When the first slider 13 slides on the first guide post 12 , the second slider 37 is driven to slide synchronously on the second guide post 36 through the brush plate 14 , ensuring that the brush plate 14 can remain stable during the process of cleaning the heat exchange fins 10 , thereby improving the cleaning effect.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot air blower for a coal mine shaft, comprising a bracket (1), on which a mounting plate (2) is fixedly arranged, characterized in that: A fan cylinder (3) and a heat exchange cylinder (4) are fixedly arranged on the mounting plate (2); the fan cylinder (3) and the heat exchange cylinder (4) are fixedly connected; a fan support frame (5) is fixedly arranged in the fan cylinder (3); a drive motor (6) is fixedly arranged on the fan support frame (5); a blade fixing seat (7) is fixedly arranged on the shaft of the drive motor (6); and a plurality of fan blades (8) are fixedly arranged on the blade fixing seat (7); An electromagnetic coil (9) is wound in a spiral form on the outer side of the heat exchange tube (4); a plurality of heat exchange fins (10) in a circumferential array are fixedly arranged in the heat exchange tube (4) along the axial direction of the heat exchange tube (4); and a plurality of guide tubes (11) are fixedly arranged on the heat exchange fins (10); When the driving motor (6) rotates to drive the fan blades (8) to rotate and generate airflow, the electromagnetic coil (9) is energized and generates heat, thereby heating the heat exchange tube (4). After the heat exchange tube (4) is heated, the heat is transferred to a plurality of heat exchange fins (10), thereby increasing the heating area of ​​the airflow and the heat exchange tube (4). The airflow is heated by the heat exchange tube (4) and the heat exchange fins (10) and then discharged; The heat exchange cylinder (4) is also provided with a plurality of cleaning mechanisms for cleaning the heat exchange fins (10).

2. A coal mine wellhead hot air blower according to claim 1, characterized in that: The cleaning mechanism comprises a plurality of first guide pillars (12) fixedly arranged between the heat exchange tube (4) and the guide tube (11), the plurality of first guide pillars (12) being fixedly arranged on one side of the heat exchange fin (10), a first slider (13) being slidably arranged on the first guide pillar (12), a brush plate (14) being fixedly arranged at both ends of the first slider (13), a plurality of bristles (15) being fixedly arranged on the brush plate (14), the bristles (15) being in contact with the heat exchange fin (10), and when the first slider (13) slides on the first guide pillar (12), the brush plate (14) cleans impurities attached to the heat exchange fin.

3. A coal mine wellhead hot air blower according to claim 2, characterized in that: The cleaning mechanism also includes a first rotating shaft (16) rotatably arranged between the heat exchange cylinder (4) and the guide cylinder (11); a reciprocating screw (17) is fixedly arranged on the first rotating shaft (16); the first sliding block (13) is simultaneously sleeved on the first guide column (12) and the reciprocating screw (17); a rocking block (18) matched with the reciprocating screw (17) is arranged on the first sliding block (13); when the first rotating shaft (16) rotates and drives the reciprocating screw (17) to rotate, the first sliding block (13) realizes reciprocating motion on the reciprocating screw (17) and the first guide column (12) through the rocking block (18), thereby realizing the brush plate (14) to clean the impurities attached to the heat dissipation fins.

4. A coal mine wellhead hot air blower according to claim 3, characterized in that: The first rotating shaft (16) in the cleaning mechanism passes through the guide tube (11), a driven bevel gear (19) is fixedly arranged at the end of the first rotating shaft (16), a plurality of first support frames (20) are fixedly arranged in the guide tube (11), a second rotating shaft (21) is rotatably arranged in the plurality of first support frames (20), a driving bevel gear (22) is fixedly arranged at one end of the second rotating shaft (21), and the driving bevel gear (22) is meshed with the driven bevel gear (19) for transmission; When the second rotating shaft (21) rotates to drive the driving bevel gear (22) to rotate, it drives the plurality of driven bevel gears (19) to rotate, and the rotation of the driven bevel gears (19) drives the first rotating shaft (16) to rotate, and the rotation of the first rotating shaft (16) drives the reciprocating screw (17) to rotate, and the reciprocating screw (17) drives the first slider (13) to reciprocate linearly on the first guide column (12) through the rocking block (18), so that the plurality of brush plates (14) can clean impurities attached to the plurality of heat dissipation fins.

5. A coal mine wellhead hot air blower according to claim 4, characterized in that: A second support frame (23) is also fixedly arranged in the guide tube (11), a planetary reducer (24) is fixedly arranged on the second support frame (23), the shaft of the drive motor (6) is fixedly connected to the input end of the planetary reducer (24), and the second rotating shaft (21) is fixedly connected to the output end of the planetary reducer (24); when the drive motor (6) drives the fan blades (8) to rotate to generate airflow, the decelerated power is also transmitted to the second rotating shaft (21) through the planetary reducer (24), and the second rotating shaft (21) transmits the power to the plurality of cleaning mechanisms through the driving bevel gear (22) and the plurality of driven bevel gears (19), so that the plurality of brush plates (14) clean the plurality of heat exchange fins (10).

6. A coal mine wellhead hot air blower according to claim 5, characterized in that: A second guide column (36) is also fixedly arranged between the heat exchange tube (4) and the guide tube (11); the second guide column (36) is also arranged on one side of the heat exchange fin (10); the second guide column (36) is arranged on the opposite side of the first guide column (12); a second slider (37) is slidably arranged on the second guide column (36); and the other end of the brush plate (14) is fixedly arranged on the second slider (37).

7. A coal mine wellhead hot air blower according to claim 6, characterized in that: An air intake air guide cover (25) and an exhaust air guide cover (26) are respectively fixedly provided at both ends of the air guide cylinder (11), and the shaft of the drive motor (6) passes through the air intake air guide cover (25).

8. A coal mine wellhead hot air blower according to claim 2, characterized in that: A wheel frame (27) is fixedly arranged at the bottom of the support (1), and a movable wheel (28) is rotatably arranged on the wheel frame (27). A trailer frame (29) is also rotatably arranged on the support (1), and a liftable screw jack (30) is fixedly arranged on the trailer frame (29). A universal wheel (31) is fixedly arranged at one end of the screw jack (30), and a handle (32) is rotatably arranged on the screw jack (30).

9. A coal mine wellhead hot air blower according to claim 3, characterized in that: A support leg (33) and a hydraulic cylinder (34) are rotatably arranged on the support (1); a movable end of the hydraulic cylinder (34) is rotatably connected to an end of the support leg (33); when the hydraulic cylinder (34) is extended or retracted, it can drive the support leg (33) to rotate on the support (1).

10. A coal mine wellhead hot air blower according to claim 1, characterized in that: A heat insulation sleeve (35) is fixedly arranged on the outer side of the electromagnetic coil (9).

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