Resistance reducing and efficiency improving device for underground ventilation system

Abstract

The utility model relates to the technical field of underground ventilation, in particular to a resistance reducing and efficiency improving device of an underground ventilation system. According to the technical scheme, the device comprises a second ventilation pipe, a first ventilation pipe and a limiting frame, and air outlet pipes are fixedly embedded into the bottom end faces of the second ventilation pipe and the first ventilation pipe; a first T-shaped fixing frame and a second T-shaped fixing frame are welded to the bottom end face of the limiting frame, and screws are installed in the limiting frame. Sliding groove plates are installed at the two ends of the inner wall of the first ventilation pipe correspondingly, and filter screens are slidably connected into the sliding groove plates in a sleeved mode. A spray head is arranged in the air outlet pipe through a fixed pipe; driving motors are mounted in the second ventilation pipe and the first ventilation pipe through mounting frames correspondingly, and fan blades are arranged on output shafts of the driving motors. Cooling fins are installed on the driving motor, and coil pipes are installed in the cooling fins. According to the utility model, underground ventilation is satisfied, intake air can be pretreated during ventilation, and cooling can be carried out during long-time operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to underground ventilation technical field, concretely is a kind of underground ventilation system resistance reduction and efficiency increasing device. BACKGROUND

[0002] In the coal production process, ventilation is the important condition for maintaining the normal temperature of mine working face, meeting oxygen supply and preventing harmful gas such as gas, coal dust and so on from accumulating.

[0003] The existing coal mine underground ventilation is mostly carried out by pipeline cooperating with fan to ventilate, but external dust and sundries are easily sucked into the pipeline to cause blockage and affect ventilation when ventilating for a long time, and the fan position is easy to overheat to affect service life when ventilating for a long time, so ventilation needs to be improved. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of underground ventilation system resistance reduction and efficiency increasing device to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of underground ventilation system resistance reduction and efficiency increasing device, including ventilation pipe two, ventilation pipe one and limit frame,

[0006] The bottom end surface of ventilation pipe two and ventilation pipe one is embedded with gas outlet pipe;

[0007] The bottom end surface of the limit frame is welded with T-shaped fixing frame one and T-shaped fixing frame two, and a screw is installed in the limit frame;

[0008] The inner wall of ventilation pipe one is equipped with a sliding groove plate at both ends, and a filter screen is slidably connected in the sliding groove plate;

[0009] The gas outlet pipe is provided with a spray head through a fixed pipe;

[0010] The ventilation pipe two and ventilation pipe one are both equipped with a driving motor through a mounting bracket, and a fan blade is provided on the output shaft of the driving motor;

[0011] The driving motor is equipped with a cooling fin, and a coil pipe is installed in the cooling fin.

[0012] Preferably, the side end surface of ventilation pipe two and ventilation pipe one is welded with a frame, a bolt three is installed in the frame through screw thread, and a nut is installed on the bolt three through screw thread. The structure of bolt three and nut can connect and fix ventilation pipe two and ventilation pipe one by frame.

[0013] Preferably, a bolt one is installed in T-shaped fixing frame one through screw thread, and the bolt one is installed in ventilation pipe one through screw thread. The bolt one can install ventilation pipe one on T-shaped fixing frame one.

[0014] Preferably, the T-shaped fixing frame two is internally threaded with a bolt two, and the bolt two is threaded in the ventilation pipe two. The ventilation pipe two can be installed on the T-shaped fixing frame two through the bolt two.

[0015] Preferably, the top end surface of the ventilation pipe one is sleeved with a limiting plate, and the top end surface of the limiting plate is welded with a handle. The handle can be used to install and take the limiting plate, so as to close and open the top end surface of the ventilation pipe one.

[0016] Preferably, the coil pipe is externally threaded with a water inlet pipe, and the water inlet pipe is in liquid communication with the coil pipe. Clean water can be injected into the coil pipe through the water inlet pipe and other mechanisms, so that the water in the coil pipe can flow.

[0017] Preferably, the end of the coil pipe away from the water inlet pipe is embedded with a connecting pipe, the end of the connecting pipe away from the coil pipe is embedded in a fixed pipe, and the fixed pipe is in liquid communication with the coil pipe through the connecting pipe. The water in the coil pipe can be discharged through the connecting pipe, and the fixed pipe can be injected at the same time.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] 1、The utility model discloses a ventilation pipe two and a ventilation pipe one are arranged, when the ventilation operation is carried out to the underground, the relevant personnel can install the limiting frame on the top end surface of the mine in advance by the screw. After completing the installation, the ventilation pipe one and the ventilation pipe two can be installed by the T-shaped fixing frame one and the T-shaped fixing frame two respectively. After the installation is completed, the staff can start the drive motor of the ventilation pipe two and the ventilation pipe one, so that the fan blade starts to rotate. In this way, when the fan blade rotates, external gas can be extracted, and the gas is discharged into the underground through the air outlet pipe, thereby forming the underground ventilation system. In the ventilation process, the gas can be filtered through the filter screen, thereby effectively preventing the external dust and sundries from entering the pipeline and adhering and blocking, and reducing the air inlet and air outlet resistance. In addition, after the filter screen is used for a long time, the staff can take down the limiting plate, and then take out the filter screen in a sliding mode. Then, the filter screen can be unfolded and taken down, so as to be cleaned and maintained. The operation can meet the ventilation resistance reduction demand.

[0020] 2. This utility model, by setting up a coil and a fixed pipe, allows for continuous water flow within the coil during underground ventilation operations. To prevent the drive motor from overheating due to prolonged operation and affecting its performance, workers connect an external mechanism via a water inlet pipe. This ensures a constant flow of water within the coil. When the drive motor cools down using heat sinks, the flowing water in the coil helps lower the temperature, preventing overheating and adverse effects. Furthermore, the water in the coil can be drained through the connecting pipe. During drainage, the water is injected into the fixed pipe and then sprayed outwards through nozzles. This spraying of water effectively reduces dust in the mine, preventing dust from interfering with operations. The amount of water sprayed must be moderate to avoid affecting normal ventilation. Moreover, the water circulation not only extends the lifespan of the drive motor but also avoids waste caused by direct water discharge, thus increasing efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 2 This is a bottom view of the structure of this utility model;

[0023] Figure 3 This is a side view of the structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the two-section structure of the ventilation pipe of this utility model;

[0025] Figure 5 This is a cross-sectional view of the ventilation duct of this utility model.

[0026] In the diagram: 1. Ventilation duct 2; 2. Air outlet duct; 3. Frame; 4. Ventilation duct 1; 5. Filter screen; 6. Slide plate; 7. Limiting plate; 8. Handle; 9. Bolt 1; 10. T-shaped fixing bracket 1; 11. Bolt 3; 12. Bolt 2; 13. T-shaped fixing bracket 2; 14. Screw; 15. Limiting bracket; 16. Fixing pipe; 17. Nozzle; 18. Mounting bracket; 19. Drive motor; 20. Fan blade; 21. Water inlet pipe; 22. Connecting pipe; 23. Coil; 24. Heat sink. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] like Figures 1-5 As shown, the present invention proposes a drag-reducing and efficiency-enhancing device for an underground ventilation system, comprising a second ventilation pipe 1, a first ventilation pipe 4, and a limiting frame 15.

[0030] Both ventilation duct 1 and ventilation duct 4 have an air outlet pipe 2 embedded and fixed at their bottom ends;

[0031] The bottom end face of the limiting frame 15 is welded with a T-shaped fixing frame 10 and a T-shaped fixing frame 2 13, and a screw 14 is installed inside the limiting frame 15.

[0032] Both ends of the inner wall of ventilation duct 4 are equipped with sliding groove plates 6, and filter screens 5 are slidably sleeved inside the sliding groove plates 6.

[0033] A nozzle 17 is installed inside the air outlet pipe 2 via a fixed pipe 16;

[0034] Both ventilation duct 1 and ventilation duct 4 are equipped with drive motors 19 via mounting brackets 18, and fan blades 20 are provided on the output shaft of drive motors 19.

[0035] A heat sink 24 is installed on the drive motor 19, and a coil 23 is installed inside the heat sink 24.

[0036] Both ventilation duct 21 and ventilation duct 14 have a frame 3 welded to their side ends. Bolt 311 is installed inside the frame 3 by thread, and a nut is installed on bolt 311 by thread. The structure of bolt 311 and nut can be used to connect and fix ventilation duct 21 and ventilation duct 14 by frame 3.

[0037] A bolt 9 is threadedly installed inside the T-shaped bracket 10, and the bolt 9 is threadedly installed inside the ventilation pipe 4. The ventilation pipe 4 can be installed on the T-shaped bracket 10 by means of the bolt 9.

[0038] Bolt 2 12 is threadedly installed inside T-shaped bracket 2 13, and bolt 2 12 is threadedly installed inside ventilation pipe 2 1. Ventilation pipe 2 1 can be installed on T-shaped bracket 2 13 by bolt 2 12.

[0039] A limiting plate 7 is fitted onto the top surface of the ventilation duct 4, and a handle 8 is welded to the top surface of the limiting plate 7. The top surface of the ventilation duct 4 can be closed and opened by installing and removing the limiting plate 7 through the handle 8.

[0040] Based on Embodiment 1: When personnel ventilate the mine, the limiting frame 15 can be pre-installed on the top surface of the mine using screws 14. After installation, ventilation pipe 1 4 and ventilation pipe 2 1 can be installed using T-shaped fixing frame 10 and T-shaped fixing frame 2 13 respectively. After installation, personnel can turn on the drive motor 19 of ventilation pipe 2 1 and ventilation pipe 1 4 to drive the fan blade 20 to rotate. When the fan blade 20 rotates, it draws in external gas and discharges it into the mine through the exhaust pipe 2, thus forming an underground ventilation system. During ventilation, the gas can be filtered through the filter screen 5 to prevent external dust and debris from entering the pipe and causing blockages, thereby reducing the resistance of air intake and exhaust. After the filter screen 5 has been used for a long time, the limiting plate 7 can be removed and the filter screen 5 can be slid out for cleaning and maintenance, thus satisfying the requirements of ventilation and resistance reduction.

[0041] Example 2

[0042] like Figures 1-5 As shown, the drag-reducing and efficiency-enhancing device for an underground ventilation system proposed in this utility model, compared with Embodiment 1, further includes: ventilation pipe 2 1, ventilation pipe 1 4, and limiting frame 15.

[0043] Both ventilation duct 1 and ventilation duct 4 have an air outlet pipe 2 embedded and fixed at their bottom ends;

[0044] The bottom end face of the limiting frame 15 is welded with a T-shaped fixing frame 10 and a T-shaped fixing frame 2 13, and a screw 14 is installed inside the limiting frame 15.

[0045] Both ends of the inner wall of ventilation duct 4 are equipped with sliding groove plates 6, and filter screens 5 are slidably sleeved inside the sliding groove plates 6.

[0046] A nozzle 17 is installed inside the air outlet pipe 2 via a fixed pipe 16;

[0047] Both ventilation duct 1 and ventilation duct 4 are equipped with drive motors 19 via mounting brackets 18, and fan blades 20 are provided on the output shaft of drive motors 19.

[0048] A heat sink 24 is installed on the drive motor 19, and a coil 23 is installed inside the heat sink 24.

[0049] Furthermore, as is well known to those skilled in the art, the provision of drive motor 19 is commonplace. Drive motor 19 can be powered by an external power supply via wires, and can be controlled by an external control switch when powered. These are all conventional methods or common knowledge, and will not be elaborated further here. Those skilled in the art can make any selections according to their needs or convenience.

[0050] A water inlet pipe 21 is installed on the coil 23, and the water inlet pipe 21 is in liquid communication with the coil 23. Clean water is drawn into the coil 23 through the external mechanism of the water inlet pipe 21, so that water can circulate in the coil 23.

[0051] A connecting pipe 22 is embedded and fixed at one end of the coil 23 away from the water inlet pipe 21. The other end of the connecting pipe 22 away from the coil 23 is embedded and fixed in the fixed pipe 16. The fixed pipe 16 is in liquid communication with the coil 23 through the connecting pipe 22. Water in the coil 23 can be discharged through the connecting pipe 22 and injected into the fixed pipe 16 during discharge.

[0052] Based on Embodiment 2: When personnel are ventilating underground, to prevent the drive motor 19 from overheating due to prolonged use and affecting its performance, clean water is drawn into the coil 23 via the water inlet pipe 21 and other external mechanisms. This allows water to circulate within the coil 23, enabling the drive motor 19 to dissipate heat through the heat sink 24. The heat sink 24 is cooled by the flowing water within the coil 23, preventing overheating and ensuring its usability. The water in the coil 23 can be discharged through the connecting pipe 22 and injected into the fixed pipe 16. After entering the fixed pipe 16, the water can be discharged through the nozzle 17, spraying water into the underground mine. Spraying a certain amount of water helps to reduce dust in the mine, preventing dust from affecting operations. The amount of water sprayed should be appropriate and not interfere with normal ventilation and underground operations. The water circulation also increases the service life of the drive motor 19 and avoids waste caused by direct water discharge, thus improving efficiency.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A downhole ventilation system resistance reduction and efficiency improvement device, comprising ventilation pipe two (1), ventilation pipe one (4) and limiting frame (15), characterized in that: The bottom end surface of the ventilation pipe two (1) and the ventilation pipe one (4) is embedded with an air outlet pipe (2); The bottom end surface of the limiting frame (15) is welded with a T-shaped fixing frame one (10) and a T-shaped fixing frame two (13), and a screw (14) is installed in the limiting frame (15); The inner wall of the ventilation pipe one (4) is provided with a sliding groove plate (6) at both ends, and a filter screen (5) is slidably sleeved in the sliding groove plate (6); The air outlet pipe (2) is provided with a spray head (17) through a fixing pipe (16); The ventilation pipe two (1) and the ventilation pipe one (4) are both provided with a driving motor (19) through a mounting bracket (18), and the output shaft of the driving motor (19) is provided with a fan blade (20); The driving motor (19) is provided with a cooling fin (24), and the cooling fin (24) is provided with a coil pipe (23).

2. A resistance reducing efficiency increasing device for a downhole ventilation system according to claim 1, characterized in that: The side end surface of the ventilation pipe two (1) and the ventilation pipe one (4) is welded with a frame (3), the frame (3) is provided with a third bolt (11) through a screw thread, and the third bolt (11) is provided with a nut through a screw thread.

3. A resistance reducing efficiency increasing device for a downhole ventilation system according to claim 1, characterized in that: The T-shaped fixing frame one (10) is provided with a first bolt (9) through a screw thread, and the first bolt (9) is provided in the ventilation pipe one (4) through a screw thread.

4. A resistance reducing efficiency increasing device for a downhole ventilation system according to claim 1, characterized in that: The T-shaped fixing frame two (13) is provided with a second bolt (12) through a screw thread, and the second bolt (12) is provided in the ventilation pipe two (1) through a screw thread.

5. A resistance reducing efficiency increasing device for a downhole ventilation system according to claim 1, characterized in that: The top end surface of the ventilation pipe one (4) is sleeved with a limiting plate (7), and the top end surface of the limiting plate (7) is welded with a handle (8).

6. A resistance reducing efficiency increasing device for a downhole ventilation system according to claim 1, characterized in that: The coil pipe (23) is provided with a water inlet pipe (21), and the water inlet pipe (21) is in liquid communication with the coil pipe (23).

7. A resistance reducing efficiency increasing device for a downhole ventilation system according to claim 1 or 6, characterized in that: The end of the coil pipe (23) away from the water inlet pipe (21) is embedded with a connecting pipe (22), the end of the connecting pipe (22) away from the coil pipe (23) is embedded in the fixing pipe (16), and the fixing pipe (16) is in liquid communication with the coil pipe (23) through the connecting pipe (22).

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