Movable fan for mine ventilation

Abstract

The utility model relates to the field of mine ventilation, and discloses a movable mine ventilation fan which comprises a base, a purification mechanism is fixedly connected to the upper surface of the base, mounting cylinders are symmetrically and fixedly connected to the right side of the purification mechanism, a motor is fixedly connected to the left side of the interior of each mounting cylinder, and a fan is fixedly connected to the left side of the interior of each motor. The right end of an output shaft of the motor is fixedly connected with fan blades, the outer side wall of the mounting cylinder fixedly communicates with an exhaust pipe, the right side of the mounting cylinder fixedly communicates with an air inlet pipe, the top end of the exhaust pipe is fixedly connected with a one-way exhaust valve, the purification mechanism comprises a mounting box, and the mounting box is of a hollow cuboid structure with an opening in the left side. A partition plate is fixedly connected to the interior of the mounting box; when the device is used, the motor is started to drive the fan blades to rotate, so that gas in a mine is sucked into the mounting barrel from the gas inlet pipe and then is exhausted into the purification mechanism above the base through the exhaust pipe to be purified, and ventilation is achieved.

Description

Technical Field

[0001] The utility model relates to the field of mine ventilation, and more particularly to a movable fan for mine ventilation. Background Art

[0002] In the process of mine safety production, ventilation management is an important component. Mine ventilation is to ensure that there is enough fresh air underground so that underground workers can work safely and will not feel uncomfortable due to lack of oxygen, thereby improving the working environment of workers and ensuring their life safety. Therefore, it is very necessary to do a good job in mine ventilation safety in a systematic and scientific manner.

[0003] Patent publication number (CN214887190U) discloses a mine ventilation device with a filtering structure, comprising a base, a U-shaped handle arranged obliquely fixedly mounted on the left side of the base, walking wheels rotatably mounted on the four corners of the bottom of the base, a filter box arranged with an opening on the left side fixedly connected to the top of the base, a purification box arranged with an opening on the top fixedly mounted on the left side of the filter box, the right side of the filter box is connected to and fixed with an air collecting hood, and a driving motor located in the filter box is fixedly mounted on the right side of the purification box. The device is reasonably designed and can effectively remove dust from the extracted gas by filtering and purifying, reducing environmental pollution caused by direct discharge of the gas, facilitating continuous collision and knocking cleaning of the filter while filtering, reducing the risk of filter clogging during use, and can quickly remove the filter and the dust collecting plate for cleaning, meeting usage requirements;

[0004] The above technology uses a single purification box for purification, which is not convenient to replace when the purification is saturated. In addition, the device takes in air through a single air inlet, and the ventilation efficiency is low, which needs to be improved. For this reason, we propose a movable fan for mine ventilation. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide a movable fan for mine ventilation, which can solve the problems in the above-mentioned technology of purification through a single purification box, which is inconvenient to replace when the purification is saturated, and the device takes in air through a single air outlet, resulting in low ventilation efficiency.

[0006] To solve the above technical problems, according to one aspect of the present utility model, more specifically, a movable mine ventilation fan includes a base, a purification mechanism is fixedly connected to the upper surface of the base, a mounting cylinder is symmetrically fixedly connected to the right side of the purification mechanism, a motor is fixedly connected to the left side of the interior of the mounting cylinder, a fan blade is fixedly connected to the right end of the output shaft of the motor, an exhaust pipe is fixedly connected to the outer wall of the mounting cylinder, an air intake pipe is fixedly connected to the right side of the mounting cylinder, and a one-way exhaust valve is fixedly connected to the top end of the exhaust pipe;

[0007] The purification mechanism includes an installation box, which is a hollow rectangular structure with an opening on the left side. A partition is fixedly connected to the interior of the installation box. A water tank is clamped in front and behind the partition inside the installation box. A ventilation port is integrally formed on the top of the water tank. Two connecting pipes are fixedly connected to the right side of the interior of the installation box. The left ends of the two connecting pipes are fixedly connected to a transfer chamber. A plurality of docking pipes are fixedly connected to the bottom of the transfer chamber. A plurality of mounting holes are provided on the upper surface of the water tank. The plurality of docking pipes are respectively connected to the plurality of mounting holes. The two connecting pipes are respectively fixedly connected to the two one-way exhaust valves. The installation cylinder is fixedly connected to the opposite side of the installation box.

[0008] Furthermore, the interior of the docking tube is fixedly connected to a retaining ring, the interior of the docking tube is slidably connected to a conical docking head located below the retaining ring, a plurality of springs are fixedly connected between the conical docking head and the retaining ring, the bottom ends of the plurality of conical docking heads respectively extend to the inner sides of the plurality of mounting holes, and the interior of the conical docking head is slidably connected to a shielding piece.

[0009] Furthermore, a T-shaped rod is fixedly connected to the inner upper surface of the water tank, and two conical top rods are integrally formed on the outer side wall of the T-shaped rod, and the top ends of the multiple conical top rods extend to the interiors of the multiple conical docking joints respectively.

[0010] Furthermore, a diversion mechanism is fixedly connected to the right side of the upper surface of the base, and the diversion mechanism includes a fixed plate 1 and a fixed plate 2. The bottom ends of the fixed plate 1 and the fixed plate 2 are fixedly connected to the upper surface of the base. An inner sleeve is fixedly connected between the fixed plate 1 and the fixed plate 2. A hollow cylinder is rotatably connected to the inside of the inner sleeve. A plurality of docking grooves are provided on the outer wall of the hollow cylinder from front to back, and a plurality of through-type docking holes are provided on the right side of the inner sleeve.

[0011] Furthermore, the outer wall of the inner sleeve is rotatably connected to multiple outer sleeves through a rotating shaft, and the inner sides of the multiple outer sleeves are located on the outsides of the multiple docking holes. A connecting ring groove is provided, and the outer wall of the outer sleeve is fixedly connected to an exhaust pipe, and the exhaust pipe is communicated with the interior of the connecting ring groove. The right end of the exhaust pipe is fixedly connected to a filter head, and the two air inlet pipes are fixedly connected at one end away from the two mounting cylinders, and pass through the fixing plate and are fixedly connected to the front end of the central axis of the hollow cylinder through a rotating shaft.

[0012] Furthermore, the rear end of the central axis of the hollow cylinder is located behind the fixed plate 2 and is fixedly connected to the gear 1, and the outer side wall of the outer sleeve is integrally formed with teeth.

[0013] Furthermore, the upper surface of the fixed plate one and the upper surface of the fixed plate two are fixedly connected to the fixed plate three and the fixed plate four respectively, and the fixed plate three and the fixed plate four are fixedly connected together with a frame rod, a plurality of air cavities are opened inside the frame rod, a piston block is slidably connected inside the air cavity, the lower surface of the piston block is located below the frame rod and is fixedly connected to an abutment rod, the bottom end of the abutment rod is fixedly connected to a tooth block, the tooth block is meshed with the tooth pattern, a hose is integrally formed on the inner upper surface of the air cavity, and a plurality of springs two are fixedly connected between the piston block and the air cavity.

[0014] Furthermore, the front surface of the fixed plate four is provided with a plurality of through-type ventilation holes, and the rear ends of the plurality of hoses are respectively fixedly connected to the interior of the plurality of ventilation holes. The rear surface of the fixed plate four is rotatably connected to the gear two through a rotating shaft, and the gear two is meshed with the gear one, and the rear surface of the gear two is provided with an arc groove.

[0015] Furthermore, the lower surface of the base is fixedly connected to a plurality of support rods, the outer side walls of the support rods are slidably connected to support tubes, a plurality of springs are fixedly connected between the support tubes and the support rods, and the bottom end of the support tube is fixedly connected to a universal wheel.

[0016] The beneficial effects of the movable mine ventilation fan of the utility model are:

[0017] When the device is in use, the motor is started to rotate the electric fan blades, thereby drawing the internal gas of the mine from the air inlet pipe into the installation tube, and then discharged into the purification mechanism above the base through the exhaust pipe for purification, thus achieving ventilation;

[0018] After the air enters the purification mechanism, it will flow into the transfer chamber through the connecting pipe, connect to multiple installation holes through multiple docking pipes, and then enter the two water tanks in front and behind the partition inside the installation box after diversion, and mix with water to purify dust in the air;

[0019] One of the water tanks can be removed separately. When the conical joint is removed from the mounting hole, the shielding piece will block the corresponding joint pipe to prevent exhaust from the joint pipe. This can achieve the effect of replacing the purified water without affecting the exhaust purification process.

[0020] The outer sleeve can rotate along the outer wall of the inner sleeve while ensuring communication with the interior of the inner sleeve. By rotating the hollow cylinder, the number of docking grooves and docking holes can be controlled, thereby controlling the number of exhaust pipes and hollow cylinders, thereby controlling the number of exhaust pipes connected according to ventilation needs.

[0021] Under normal conditions, the tooth block at the bottom of the abutting rod, pushed by spring 2, will abut against the tooth pattern, limiting the rotation of the outer sleeve, thus preventing the exhaust pipe from becoming loose after being rolled up.

[0022] By utilizing the meshing of gear one and gear two, the number of air cavities that can be ventilated can be controlled according to the number of exhaust pipes that are connected and used, thereby controlling the number of rotations of the outer sleeve, making it easy to extend the corresponding number of exhaust pipes until they are stretched to the corresponding length for exhaust ventilation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] Figure 1 This is a schematic diagram of the overall structure of a movable mine ventilation fan of the utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional connection structure of the mounting cylinder, motor and fan blades of a movable mine ventilation fan of the present invention;

[0026] Figure 3 This is a schematic side view of a vertical cross-section of a purification mechanism of a movable mine ventilation fan according to the present invention;

[0027] Figure 4 This is a side structural diagram of a vertical cross-section of a water tank of a movable mine ventilation fan according to the present invention;

[0028] Figure 5 This is a schematic cross-sectional view of a butt joint pipe of a movable mine ventilation fan according to the present invention;

[0029] Figure 6 This is a partial cross-sectional view of the connection structure of the inner sleeve and the outer sleeve of a movable mine ventilation fan of the utility model;

[0030] Figure 7 This is a schematic diagram of the top view of the connection structure of the inner sleeve and the cross section of the hollow cylinder of a movable mine ventilation fan of the utility model;

[0031] Figure 8 This is a schematic diagram of the vertical cross-section side view of the connection structure of the fixing plate 3, the fixing plate 4 and the frame rod of a movable mine ventilation fan of the utility model;

[0032] Figure 9 This is a structural schematic diagram of a movable fixing plate 4 of a mine ventilation fan according to the present invention;

[0033] Figure 10 The utility model is a schematic diagram of the cross-sectional connection structure of a support rod and a support pipe of a movable mine ventilation fan.

[0034] In the figure: 1. Base; 2. Purification mechanism; 3. Mounting cylinder; 4. Motor; 5. Fan blades; 6. Exhaust pipe; 7. Inlet pipe; 8. One-way exhaust valve; 9. Diverter mechanism; 10. Fixing plate three; 11. Fixing plate four; 12. Frame rod; 13. Air cavity; 14. Piston block; 15. Abutment rod; 16. Gear block; 17. Hose; 18. Ventilation hole; 19. Gear two; 20. Arc groove; 21. Support rod; 22. Support pipe; 23. Spring two; 24. Spring three; 25. Universal wheel; 201. Mounting box; 202. Partition; 203. Water tank ; 204, ventilation port; 205, connecting pipe; 206, transfer chamber; 207, docking pipe; 208, mounting hole; 209, retaining ring; 210, conical docking joint; 211, spring 1; 212, shielding piece; 213, T-shaped rod; 214, conical top rod; 901, fixing plate 1; 902, fixing plate 2; 903, inner sleeve; 904, hollow cylinder; 905, docking groove; 906, docking hole; 907, outer sleeve; 908, connecting ring groove; 909, exhaust pipe; 910, filter head; 911, gear 1; 912, tooth pattern. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0036] According to one aspect of the present invention, Figure 1-10 As shown, a movable mine ventilation fan is provided, including a base 1, a purification mechanism 2 is fixedly connected to the upper surface of the base 1, a mounting cylinder 3 is symmetrically fixedly connected to the right side of the purification mechanism 2, a motor 4 is fixedly connected to the left side of the interior of the mounting cylinder 3, a fan blade 5 is fixedly connected to the right end of the output shaft of the motor 4, an outer wall of the mounting cylinder 3 is fixedly connected to an exhaust pipe 6, an air intake pipe 7 is fixedly connected to the right side of the mounting cylinder 3, a one-way exhaust valve 8 is fixedly connected to the top of the exhaust pipe 6, the purification mechanism 2 includes a mounting box 201, the mounting box 201 is a hollow rectangular structure with an opening on the left side, a partition 202 is fixedly connected to the interior of the mounting box 201, and the mounting box Inside 201, water tanks 203 are engaged in front of and behind the partition 202. A ventilation port 204 is integrally formed on the top of the water tank 203. Two connecting pipes 205 are fixedly connected to the right side of the interior of the installation box 201. The left ends of the two connecting pipes 205 are fixedly connected to a transfer chamber 206. The bottom of the transfer chamber 206 is fixedly connected to multiple connecting pipes 207. The upper surface of the water tank 203 is provided with multiple mounting holes 208. The multiple connecting pipes 207 are respectively connected to the multiple mounting holes 208. The two connecting pipes 205 are respectively fixedly connected to the two one-way exhaust valves 8. The installation cylinder 3 is fixedly connected to the opposite side of the installation box 201.

[0037] When the device is in use, the motor 4 is started to rotate the electric fan blades 5, thereby drawing the internal gas of the mine from the air inlet pipe 7 into the interior of the installation tube 3, and then discharged into the purification mechanism 2 above the base 1 through the exhaust pipe 6 for purification to achieve ventilation. After the air enters the purification mechanism 2, it will pass into the transfer chamber 206 through the connecting pipe 205, and connect with the multiple installation holes 208 through multiple docking pipes 207. After diversion, it enters the two water tanks 203 before and after the partition 202 inside the installation box 201 to mix with water to purify dust in the air. The ventilation port 204 is used for exhaust and ventilation.

[0038] In this embodiment, a retaining ring 209 is fixedly connected to the interior of the butt joint 207, and a conical butt joint 210 is slidably connected to the interior of the butt joint 207 below the retaining ring 209. A plurality of springs 211 are fixedly connected between the conical butt joint 210 and the retaining ring 209. The bottom ends of the plurality of conical butt joints 210 extend to the inner sides of the plurality of mounting holes 208, respectively. A shielding piece 212 is slidably connected to the interior of the conical butt joint 210. A T-shaped rod 213 is fixedly connected to the inner upper surface of the water tank 203. The outer side wall of the T-shaped rod 213 is integrally formed with two conical top rods 214. The top ends of the plurality of conical top rods 214 extend to the interior of the plurality of conical butt joints 210, respectively.

[0039] When the docking tube 207 is docked with the mounting hole 208, the conical docking joint 210 will be inserted into the mounting hole 208, and at the same time, the conical top rod 214 will be inserted into the conical docking joint 210, pushing the shielding piece 212 to rise. At this time, the docking tube 207 is docked and connected with the mounting hole 208, which is convenient for the mixing and purification of air and water. This connection method makes it possible to remove one of the water tanks 203 separately. When the conical docking joint 210 is removed from the mounting hole 208, the shielding piece 212 will block the corresponding docking tube 207 to prevent the docking tube 207 from exhausting, so as to achieve the effect of replacing the purified water without affecting the exhaust purification process.

[0040] In this embodiment, a diversion mechanism 9 is fixedly connected to the right side of the upper surface of the base 1. The diversion mechanism 9 includes a fixed plate 1 901 and a fixed plate 2 902. The bottom ends of the fixed plate 1 901 and the fixed plate 2 902 are fixedly connected to the upper surface of the base 1. An inner sleeve 903 is fixedly connected between the fixed plate 1 901 and the fixed plate 2 902. The inner sleeve 903 is rotatably connected to a hollow cylinder 904. The outer wall of the hollow cylinder 904 is provided with a plurality of docking grooves 905 from front to back. The right side of the inner sleeve 903 is provided with a plurality of through-type docking holes 906. The outer wall of the inner sleeve 903 is rotatably connected to multiple outer sleeves 907 through a rotating shaft. The inner sides of the multiple outer sleeves 907 are located on the outside of the multiple docking holes 906 and are provided with connecting ring grooves 908. The outer wall of the outer sleeve 907 is fixedly connected to an exhaust pipe 909, and the exhaust pipe 909 is connected to the inside of the connecting ring groove 908. The right end of the exhaust pipe 909 is fixedly connected to a filter head 910. The two air inlet pipes 7 are fixedly connected at one end away from the two mounting cylinders 3, and pass through the fixed plate 901 and are fixedly connected to the front end of the central axis of the hollow cylinder 904 through a rotating shaft.

[0041] The device utilizes the docking holes 906 and the connecting ring grooves 908 to ensure that the outer sleeve 907 can rotate along the outer wall of the inner sleeve 903 while ensuring that it is connected to the interior of the inner sleeve 903. At the same time, the outer wall of the hollow cylinder 904 is provided with docking grooves 905 that become shorter from front to back, so that by rotating the hollow cylinder 904, the number of docking connections between the docking grooves 905 and the docking holes 906 can be controlled, thereby controlling the number of exhaust pipes 909 and the hollow cylinder 904, and thus controlling the number of exhaust pipes 909 connected according to ventilation needs.

[0042] In this embodiment, the rear end of the central axis of the hollow cylinder 904 is located behind the fixed plate 2 902 and is fixedly connected to the gear 1 911. The outer wall of the outer sleeve 907 is integrally formed with a tooth pattern 912. The upper surface of the fixed plate 1 901 and the upper surface of the fixed plate 2 902 are respectively fixedly connected to the fixed plate 3 10 and the fixed plate 4 11. The fixed plate 3 10 and the fixed plate 4 11 are fixedly connected to the frame rod 12. A plurality of air cavities 13 are opened inside the frame rod 12. The interior of the air cavity 13 is slidably connected to a piston block 14. The lower surface of the piston block 14 is located below the frame rod 12 and is fixedly connected to a bearing. Connecting rod 15, the bottom end of abutting rod 15 is fixedly connected to a tooth block 16, which is meshed with the tooth pattern 912. A hose 17 is integrally formed on the inner upper surface of the air cavity 13. A plurality of springs 23 are fixedly connected between the piston block 14 and the air cavity 13. A plurality of through-type ventilation holes 18 are formed on the front surface of the fixing plate 4 11. The rear ends of the plurality of hoses 17 are respectively fixedly connected to the interior of the plurality of ventilation holes 18. The rear surface of the fixing plate 4 11 is rotatably connected to a gear 2 19 via a rotating shaft. Gear 2 19 is meshed with gear 1 911. An arcuate groove 20 is formed on the rear surface of gear 2 19.

[0043] Under normal conditions, under the push of spring 23, the tooth block 16 at the bottom of the abutment rod 15 will abut against the tooth pattern 912, limiting the rotation of the outer sleeve 907, so that the exhaust tube 909 is not easy to scatter after being rolled up. When it is necessary to remove a corresponding number of exhaust tubes 909, the gear 1 911 is rotated externally to control the number of exhaust tubes 909 connected to the hollow cylinder 904. By utilizing the engagement of gear 1 911 and gear 2 19, the arc groove 20 can be moved, and then the number of ventilation holes 18 blocked by gear 2 19 can be controlled to connect the air cavity 13 to the outside. In this way, the number of air cavities 13 that can be ventilated can be controlled according to the number of exhaust tubes 909 used for connection, thereby controlling the number of rotations of the outer sleeve 907, making it easy to extend the corresponding number of exhaust tubes 909 to the corresponding position for exhaust ventilation.

[0044] In this embodiment, a plurality of support rods 21 are fixedly connected to the lower surface of the base 1, a support tube 22 is slidably connected to the outer wall of the support rod 21, a plurality of springs 24 are fixedly connected between the support tube 22 and the support rod 21, and a universal wheel 25 is fixedly connected to the bottom end of the support tube 22;

[0045] It has a shock-absorbing and cushioning effect when moving.

[0046] The electrical components that appear in this article are all electrical components that exist in reality.

[0047] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the scope of protection of the present invention.

Claims

1. A movable fan for mine ventilation, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected to a purification mechanism (2), the right side of the purification mechanism (2) is symmetrically fixedly connected to a mounting tube (3), the left side of the interior of the mounting tube (3) is fixedly connected to a motor (4), the right end of the output shaft of the motor (4) is fixedly connected to a fan blade (5), the outer side wall of the mounting tube (3) is fixedly connected to an exhaust pipe (6), the right side of the mounting tube (3) is fixedly connected to an air intake pipe (7), and the top end of the exhaust pipe (6) is fixedly connected to a one-way exhaust valve (8); The purification mechanism (2) includes an installation box (201), the installation box (201) is a hollow rectangular parallelepiped structure with an opening on the left side, a partition (202) is fixedly connected to the interior of the installation box (201), a water tank (203) is clamped in front of and behind the partition (202) in the interior of the installation box (201), a ventilation port (204) is integrally formed on the top of the water tank (203), two connecting pipes (205) are fixedly connected to the right side of the interior of the installation box (201), and the two connecting pipes (205) are fixedly connected to the right side of the interior of the installation box (201). The left ends of the through pipes (205) are fixedly connected to a transfer chamber (206), the bottom of the transfer chamber (206) is fixedly connected to a plurality of butt joints (207), the upper surface of the water tank (203) is provided with a plurality of mounting holes (208), the plurality of butt joints (207) are respectively connected to the plurality of mounting holes (208), the two communicating pipes (205) are respectively fixedly connected to the two one-way exhaust valves (8), and the mounting cylinder (3) is fixedly connected to the opposite side of the mounting box (201).

2. A movable mine ventilation fan according to claim 1, characterized in that: The interior of the butt joint (207) is fixedly connected to a retaining ring (209); the interior of the butt joint (207) is slidably connected to a conical butt joint (210) located below the retaining ring (209); a plurality of springs (211) are fixedly connected between the conical butt joint (210) and the retaining ring (209); the bottom ends of the plurality of conical butt joints (210) respectively extend to the inner sides of the plurality of mounting holes (208); and a shielding piece (212) is slidably connected to the interior of the conical butt joint (210).

3. The movable mine ventilation fan according to claim 2, characterized in that: A T-shaped rod (213) is fixedly connected to the inner upper surface of the water tank (203), and two conical top rods (214) are integrally formed on the outer side wall of the T-shaped rod (213), and the top ends of the multiple conical top rods (214) respectively extend to the interior of the multiple conical butt joints (210).

4. The movable mine ventilation fan according to claim 1, characterized in that: A diversion mechanism (9) is fixedly connected to the right side of the upper surface of the base (1), and the diversion mechanism (9) includes a fixed plate 1 (901) and a fixed plate 2 (902). The bottom ends of the fixed plate 1 (901) and the fixed plate 2 (902) are fixedly connected to the upper surface of the base (1). An inner sleeve (903) is fixedly connected between the fixed plate 1 (901) and the fixed plate 2 (902). The inner part of the inner sleeve (903) is rotatably connected to a hollow cylinder (904). The outer wall of the hollow cylinder (904) is provided with a plurality of docking grooves (905) from front to back, and the right side of the inner sleeve (903) is provided with a plurality of through-type docking holes (906).

5. The movable fan for mine ventilation according to claim 4, characterized in that: The outer wall of the inner sleeve (903) is rotatably connected to a plurality of outer sleeves (907) via a rotating shaft, and the inner sides of the plurality of outer sleeves (907) are provided with connecting ring grooves (908) located on the outer sides of the plurality of docking holes (906), and the outer wall of the outer sleeve (907) is fixedly connected to an exhaust pipe (909), and the exhaust pipe (909) is communicated with the interior of the connecting ring groove (908), and the right end of the exhaust pipe (909) is fixedly connected to a filter head (910), and the two air inlet pipes (7) are fixedly connected at one end away from the two mounting cylinders (3), and are fixedly connected to the front end of the central axis of the hollow cylinder (904) through the rotating shaft.

6. The movable fan for mine ventilation according to claim 5, characterized in that: The rear end of the central axis of the hollow cylinder (904) is located behind the second fixing plate (902) and is fixedly connected to a gear (911). The outer wall of the outer sleeve (907) is integrally formed with a tooth pattern (912).

7. The movable fan for mine ventilation according to claim 6, characterized in that: The upper surface of the fixed plate 1 (901) and the upper surface of the fixed plate 2 (902) are fixedly connected to the fixed plate 3 (10) and the fixed plate 4 (11) respectively, and the fixed plate 3 (10) and the fixed plate 4 (11) are fixedly connected to a frame rod (12) together, and a plurality of air cavities (13) are provided inside the frame rod (12), and a piston block (14) is slidably connected inside the air cavity (13), and the lower surface of the piston block (14) is located below the frame rod (12) and is fixedly connected to an abutment rod (15), and the bottom end of the abutment rod (15) is fixedly connected to a tooth block (16), and the tooth block (16) is meshed with the tooth pattern (912), and a hose (17) is integrally formed on the inner upper surface of the air cavity (13), and a plurality of springs (23) are fixedly connected between the piston block (14) and the air cavity (13).

8. The movable fan for mine ventilation according to claim 7, characterized in that: The front surface of the fixing plate four (11) is provided with a plurality of through-type ventilation holes (18), and the rear ends of the plurality of hoses (17) are fixedly connected to the interior of the plurality of ventilation holes (18), respectively. The rear surface of the fixing plate four (11) is rotatably connected to the gear two (19) via a rotating shaft, and the gear two (19) is meshed with the gear one (911), and the rear surface of the gear two (19) is provided with an arc groove (20).

9. The movable fan for mine ventilation according to claim 1, characterized in that: The lower surface of the base (1) is fixedly connected to a plurality of support rods (21), the outer side walls of the support rods (21) are slidably connected to support tubes (22), a plurality of springs (24) are fixedly connected between the support tubes (22) and the support rods (21), and the bottom end of the support tubes (22) is fixedly connected to a universal wheel (25).

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