Intelligent ventilation system for mine

Abstract

The invention discloses an intelligent mine ventilation system, and relates to the technical field of mine ventilation. The device comprises an air conveying pipeline for conveying air into the mine tunnel, the air conveying pipeline is connected with the inner wall of the mine tunnel through a pipe clamp support, and pipe joints are evenly connected to the air conveying pipeline at intervals; the pipe joint is sealed through a pipe cap; an air supply control device is arranged outside the air conveying pipeline; the air supply control device comprises a limiting mechanism used for being installed on the air conveying pipeline and an action mechanism used for adjusting the air supply process. The limiting mechanism comprises a supporting frame of a U-shaped structure. The support frame is sleeved outside the gas pipeline from bottom to top; a bracket is fixed at the upper end of the support frame; a supporting shaft is fixed on the bracket along the vertical direction; the fulcrum shaft is rotationally sleeved with a limiting rod used for blocking the upper portion of the gas conveying pipeline. And the limiting rod is connected with a locking piece for positioning the limiting rod and the bracket. The system has the beneficial effects that air can be supplied to key dangerous areas in a centralized mode, arrangement is easy and flexible, the manufacturing cost is low, and using limitation is small.

Description

Technical Field

[0001] The invention relates to the technical field of mine ventilation, and in particular to an intelligent mine ventilation system. Background Art

[0002] Mine ventilation refers to the process of injecting fresh air into the mine tunnel to increase the oxygen concentration, so as to dilute and remove toxic and harmful gases and dust in the mine tunnel. The basic tasks of mine ventilation are: supplying enough fresh air to meet the oxygen needs of personnel; diluting harmful gases and dust in the mine tunnel to ensure safe production; regulating the climate of the mine tunnel to create a good working environment.

[0003] At present, mine ventilation methods are usually divided into overall ventilation and local ventilation. Overall ventilation uses the principle of air pressure difference to make the air flow flow as a whole in the mine tunnel, while local ventilation provides concentrated ventilation to specific locations in the mine tunnel. Compared with overall ventilation, local ventilation is more targeted, especially for dangerous areas such as working faces or explosive gas accumulation areas, local ventilation has more advantages.

[0004] However, the current local ventilation devices are complex in layout, and are affected by external factors such as terrain and cost, and have great limitations in use. When working in many locations, the actual effect is often not ideal. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an intelligent mine ventilation system in view of the above-mentioned technical deficiencies, which can centrally supply air to key dangerous areas, and has simple and flexible layout, low construction cost and few usage limitations.

[0006] The technical solution adopted by the present invention is: to provide an intelligent mine ventilation system, including a gas pipeline for transmitting air into a mine tunnel, the gas pipeline being connected to the inner wall of the mine tunnel through a pipe clamp bracket, and pipe joints being evenly spaced and connected to the gas pipeline; the pipe joints are sealed by pipe caps; and an air supply control device is arranged outside the gas pipeline;

[0007] The air supply control device includes a limiting mechanism for installation on the gas pipeline and an action mechanism for adjusting the air supply process;

[0008] The limiting mechanism comprises a support frame of a U-shaped structure; the support frame is sleeved on the outside of the gas pipeline from bottom to top; a bracket is fixed on the upper end of the support frame; a support shaft is vertically fixed on the upper edge of the support seat; a limiting rod for blocking the gas pipeline is rotatably sleeved outside the support shaft; a locking piece for positioning the limiting rod with the bracket is connected; an air guide shell is fixed on the lower end of the support frame; the upper end of the air guide shell is sealed and plugged with a pipe joint through an air inlet, and the lower end is rotatably connected to an exhaust head; an air outlet is opened on the side of the exhaust head;

[0009] The action mechanism includes an encapsulation shell vertically fixed on the side of the air guide shell; a through-hole corresponding to the encapsulation shell is opened on the side of the air guide shell; a sealing plate corresponding to the through-hole is slidably connected inside the encapsulation shell; a fan is fixed to one end of the sealing plate close to the air guide shell; the fan is used to blow air downward; a telescopic device for driving the sliding of the sealing plate is connected inside the encapsulation shell; a gas sensor for detecting the content of harmful gases in the mine tunnel is fixed on the support frame; the gas sensor is connected to the control circuit, and the processor in the control circuit controls the telescopic device and the fan to start; when the gas sensor detects that the harmful gas exceeds a preset value, the telescopic device pushes the fan into the air guide shell and starts the fan.

[0010] To further optimize the technical solution, a locking device for a mine intelligent ventilation system includes an extension rod fixed vertically on the lower side of a limiting rod; an arc-shaped through groove is opened on a support seat with a support shaft as the center; the extension rod passes through the through groove accordingly; a locking sleeve is slidably sleeved on the outside of the extension rod; and a compression spring is connected to the lower end of the extension rod for abutting the upper end of the locking sleeve against the support seat.

[0011] To further optimize the technical solution, a driving member for controlling the rotation of an exhaust head is provided on a support frame of a mine intelligent ventilation system; the driving member includes a reduction motor fixed on the support frame; a driving gear is coaxially fixed to the output end of the reduction motor; a driven gear is fixed to the outer sleeve of the exhaust head; and the driving gear is meshingly connected with the driven gear.

[0012] To further optimize the technical solution, an outer end of an air outlet of an intelligent mine ventilation system is arranged to be inclined downward.

[0013] To further optimize the technical solution, the air outlets of a mine intelligent ventilation system are evenly distributed along the circumference of the exhaust head, and at least two air outlets are provided.

[0014] To further optimize the technical solution, an alarm connected to a control circuit is fixed on a support frame of a mine intelligent ventilation system; when the gas sensor detects that the harmful gas exceeds a preset value, the alarm is activated.

[0015] The beneficial effects of the present invention are:

[0016] The gas pipeline can be arranged according to the direction of the mine tunnel. Pipe joints are evenly spaced on the gas pipeline, so that the air supply control device can be installed everywhere in the mine tunnel, which is conducive to centralized air supply to key dangerous areas in various parts of the mine tunnel and has strong applicability.

[0017] The upper end of the air guide shell is sealed and plugged with the pipe joint through the air inlet, and the lower end is connected to the exhaust head through rotation. The exhaust head has an air outlet on the side, which can discharge the air transported in the gas pipeline into the mine tunnel through the air outlet; the rotation setting of the exhaust head can change the direction of the air outlet, further improving the pertinence of the air supply. The blocking of the gas pipeline by the limiting rod can effectively prevent the separation of the air inlet and the pipe joint, ensuring the long-term stability of the air supply control device after installation.

[0018] The telescopic device pushes the fan into the air guide housing, which can increase the outward air flow rate through the action of the fan. When the gas sensor detects that the harmful gas exceeds the standard, the dilution rate of the harmful gas is accelerated, thereby improving the protection effect on the staff. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a schematic diagram of the local structure of the air supply control device.

[0021] In the figure, 1. gas pipeline; 2. pipe clamp bracket; 3. pipe joint; 4. pipe cap; 5. support frame; 6. bracket; 7. support shaft; 8. limiting rod; 9. air guide shell; 10. air inlet; 11. exhaust head; 12. air outlet; 13. packaging shell; 14. through-port; 15. sealing plate; 16. fan; 17. telescope; 18. gas sensor; 19. extension rod; 20. through slot; 21. locking sleeve; 22. compression spring; 23. reduction motor; 24. driving gear; 25. driven gear; 26. alarm. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figure 1 As shown, a mine intelligent ventilation system includes a gas pipeline 1 for transmitting air into a mine tunnel, the gas pipeline 1 is connected to the inner wall of the mine tunnel through a pipe clamp bracket 2, and pipe joints 3 are evenly spaced and connected to the gas pipeline 1; the pipe joints 3 are sealed by a pipe cap 4; and an air supply control device is arranged outside the gas pipeline 1;

[0024] The air supply control device includes a limiting mechanism for installation on the gas pipeline 1 and an action mechanism for adjusting the air supply process;

[0025] like Figure 1-2As shown, the limiting mechanism includes a U-shaped support frame 5; the support frame 5 is sleeved on the outside of the gas pipeline 1 from bottom to top; a bracket 6 is fixed to the upper end of the support frame 5; a support shaft 7 is vertically fixed on the upper side of the support shaft 6; a limiting rod 8 for blocking the upper side of the gas pipeline 1 is rotatably sleeved on the outer side of the support shaft 7; a locking piece for positioning the limiting rod 8 with the bracket 6 is connected; an air guide shell 9 is fixed to the lower end of the support frame 5; the upper end of the air guide shell 9 is sealed and plugged with the pipe joint 3 through the air inlet 10, and the lower end is rotatably connected with the exhaust head 11; the exhaust head 11 has an air outlet 12 on its side;

[0026] like Figure 2 As shown, the action mechanism includes a packaging shell 13 vertically fixed on the side of the air guide shell 9; a through-hole 14 corresponding to the packaging shell 13 is opened on the side of the air guide shell 9; a sealing plate 15 corresponding to the through-hole 14 is slidably connected inside the packaging shell 13; a fan 16 is fixed to one end of the sealing plate 15 close to the air guide shell 9; the fan 16 is used to blow air downward; a telescopic device 17 for driving the sealing plate 15 to slide is connected inside the packaging shell 13; a gas sensor 18 for detecting the content of harmful gases in the mine tunnel is fixed on the support frame 5; the gas sensor 18 is connected to the control circuit, and the processor in the control circuit controls the telescopic device 17 and the fan 16 to start; when the gas sensor 18 detects that the harmful gas exceeds the preset value, the telescopic device 17 pushes the fan 16 into the air guide shell 9 and starts the fan 16.

[0027] According to the area where centralized air supply is required, the air supply control device is installed to the position on the gas pipeline 1 corresponding to the area, the blocked pipe cap 4 is removed, the air inlet 10 is plugged into the pipe joint 3, and the limiting rod 8 is rotated and positioned above the gas pipeline 1 to block it. At this time, the support frame 5 is positioned, and the air inlet 10 cannot be separated from the pipe joint 3. The airflow in the gas pipeline 1 can be introduced into the air guide shell 9 through the pipe joint 3, and then discharged through the air outlet 12 on the exhaust head 11, so as to realize centralized air supply to the area.

[0028] When the harmful gas in the area exceeds the standard (the harmful gas is one or more of carbon monoxide, carbon dioxide, hydrogen sulfide, ammonia dioxide, sulfur dioxide, methane, etc.), it is detected by the gas sensor 18, and the processor will control the expansion joint 17 to start, push the fan 16 into the air guide shell 9, and control the fan 16 to rotate, so that the fan 16 accelerates to draw air from the gas pipeline 1, thereby increasing the flow rate of air blowing outward from the air outlet 12, accelerating the dilution rate of the harmful gas, and improving the protection effect on the staff. After it is detected that the harmful gas content meets the standard, the expansion joint 17 retracts the fan 16 into the packaging shell 13, and the fan 16 stops working. This process saves electricity and reduces noise. In addition, when the air is accelerated, the natural air supply flow from the gas pipeline 1 to the rest of the mine will be reduced. Therefore, when the harmful gas does not exceed the standard, the air is no longer accelerated.

[0029] In the above process, when the fan 16 enters the air guide shell 9, the sealing plate 15 will block the penetration port 14, and the air will not enter the packaging shell 13 during circulation, thereby avoiding the deviation of the air circulation path, which will cause the flow rate to be damaged and the impact noise to increase.

[0030] like Figure 2 As shown, the locking member includes an extension rod 19 fixed vertically on the lower side of the limiting rod 8; an arc-shaped through groove 20 is opened on the bracket 6 with the support shaft 7 as the center; the extension rod 19 passes through the through groove 20 accordingly; a locking sleeve 21 is slidably sleeved on the outer side of the extension rod 19; and a compression spring 22 is connected to the lower end of the extension rod 19 for abutting the upper end of the locking sleeve 21 against the bracket 6.

[0031] By releasing the locking sleeve 21 from contact with the bracket 6, the limiting rod 8 can be driven to rotate by the extension rod 19 to adjust the position of the limiting rod 8. When the limiting rod 8 is adjusted to the right position, the elastic force of the compression spring 22 pushes the locking sleeve 21 to contact with the bracket 6, and the position of the limiting rod 8 can be locked again. This process makes the rotation adjustment of the limiting rod 8 more convenient.

[0032] like Figure 2 As shown, a driving member for controlling the rotation of the exhaust head 11 is provided on the support frame 5; the driving member includes a reduction motor 23 fixed on the support frame 5; a driving gear 24 is coaxially fixed to the output end of the reduction motor 23; a driven gear 25 is fixed to the outer shell of the exhaust head 11; the driving gear 24 is meshingly connected with the driven gear 25.

[0033] The driving gear 24 can be rotated by the rotation of the reduction motor 23. Since the driving gear 24 is meshed with the driven gear 25, the exhaust head 11 can be driven to rotate, thereby achieving a continuous large-scale wind sweeping effect on key areas, which helps to make the blown wind spread in all directions in the area more quickly. Of course, the reduction motor 23 can be connected to the control circuit and only work when the gas sensor 18 detects that the harmful gas exceeds the standard, which is more targeted.

[0034] The outer end of the air outlet 12 is tilted downward. The gas pipeline 1 is usually fixed on the top of the mine tunnel, and the air outlet 12 is tilted downward to increase the efficiency of diffusion to the lower space in the mine tunnel.

[0035] like Figure 1-2 As shown, the air outlets 12 are evenly distributed along the circumference of the exhaust head 11, and at least two are provided. Such a configuration can avoid the problem that the exhaust head 11 rotates on its own due to the deviation of the blown airflow relative to the exhaust head 11 and the generated airflow is easily polarized, resulting in loud noise.

[0036] like Figure 2As shown, an alarm 26 connected to the control circuit is fixed on the support frame 5; when the gas sensor 18 detects that the harmful gas exceeds the preset value, the alarm 26 starts the alarm. The alarm 26 warns the staff when the harmful gas exceeds the standard. If the alarm continues for a long time, it means that the exceeding of the standard is serious and the ventilation measures of the system cannot effectively dilute it. At this time, the staff can consciously evacuate the area urgently.

[0037] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A mine intelligent ventilation system, comprising a gas pipeline (1) for transmitting air into a mine tunnel, the gas pipeline (1) being connected to the inner wall of the mine tunnel via a pipe clamp bracket (2), characterized in that: The gas transmission pipeline (1) is evenly spaced with pipe joints (3); the pipe joints (3) are sealed by pipe caps (4); and an air supply control device is arranged outside the gas transmission pipeline (1); The air supply control device comprises a limiting mechanism for installation on the air supply pipeline (1) and an action mechanism for adjusting the air supply process; The limiting mechanism comprises a support frame (5) of a U-shaped structure; the support frame (5) is sleeved on the outside of the gas pipeline (1) from bottom to top; a bracket (6) is fixed to the upper end of the support frame (5); a support shaft (7) is fixed vertically on the upper edge of the support frame (6); a limiting rod (8) for blocking the upper part of the gas pipeline (1) is rotatably sleeved on the outer side of the support shaft (7); a locking member for positioning the limiting rod (8) with the bracket (6) is connected; an air guide shell (9) is fixed to the lower end of the support frame (5); the upper end of the air guide shell (9) is sealed and plugged with the pipe joint (3) through the air inlet (10), and the lower end is rotatably connected to the exhaust head (11); an air outlet (12) is provided on the side of the exhaust head (11); The action mechanism comprises a packaging shell (13) vertically fixed on the side of the air guide shell (9); a through-hole (14) corresponding to the packaging shell (13) is opened on the side of the air guide shell (9); a sealing plate (15) corresponding to the through-hole (14) is slidably connected inside the packaging shell (13); a fan (16) is fixed to one end of the sealing plate (15) close to the air guide shell (9); the fan (16) is used to blow air downward; a telescopic device (17) for driving the sliding of the sealing plate (15) is connected inside the packaging shell (13); a gas sensor (18) for detecting the content of harmful gas in the mine tunnel is fixed on the support frame (5); the gas sensor (18) is connected to the control circuit, and the processor in the control circuit controls the telescopic device (17) and the fan (16) to start; when the gas sensor (18) detects that the harmful gas exceeds a preset value, the telescopic device (17) pushes the fan (16) into the air guide shell (9) and starts the fan (16).

2. The intelligent mine ventilation system according to claim 1, characterized in that: The locking member comprises an extension rod (19) fixed vertically to the lower side of the limiting rod (8); an arc-shaped through groove (20) is opened on the bracket (6) with the support shaft (7) as the center; the extension rod (19) passes through the through groove (20) accordingly; a locking sleeve (21) is slidably sleeved outside the extension rod (19); and a compression spring (22) is connected to the lower end of the extension rod (19) for abutting the upper end of the locking sleeve (21) against the bracket (6).

3. The intelligent mine ventilation system according to claim 1, characterized in that: A driving member for controlling the rotation of the exhaust head (11) is provided on the support frame (5); the driving member comprises a reduction motor (23) fixed on the support frame (5); a driving gear (24) is coaxially fixed to the output end of the reduction motor (23); a driven gear (25) is fixed to the outer shell of the exhaust head (11); and the driving gear (24) is meshingly connected with the driven gear (25).

4. The intelligent mine ventilation system according to claim 1, characterized in that: The outer end of the air outlet (12) is arranged to be inclined downward.

5. The intelligent mine ventilation system according to claim 1, characterized in that: The air outlets (12) are evenly distributed along the circumference of the exhaust head (11), and at least two air outlets are provided.

6. The intelligent mine ventilation system according to claim 1, characterized in that: An alarm (26) connected to a control circuit is fixed on the support frame (5); when the gas sensor (18) detects that the harmful gas exceeds a preset value, the alarm (26) starts an alarm.

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