A coal mine underground multi-gas coordinated prevention and intelligent ventilation integrated device

Abstract

The application discloses a kind of coal mine underground multi-gas coordination prevention and intelligent ventilation integrated device, comprising: ventilation section, along coal mine underground series arrangement, it includes two parallel square tubes, one square tube is connected with import, another square tube is connected with export, and square tube is installed with gas guide system;Hanging rail, between two square tubes, hanging rail is installed with mobile seat, mobile seat is installed with the H-shaped pipe for connecting two gas guide systems, and H-shaped pipe middle part is connected with intelligent ventilation device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine underground ventilation, in particular to a coal mine underground multi-gas collaborative prevention and intelligent ventilation integrated device. BACKGROUND

[0002] In the process of coal mining, the traditional ventilation system has the following problems: the ventilation network design is unreasonable, such as no wind, slight wind, and circulating wind, which leads to poor wind flow stability, uneven quality of ventilation facilities, serious air leakage of air door, and insufficient effective air volume rate.

[0003] In terms of monitoring system, there are many dead angles, only discrete key areas are equipped with sensors, which cannot realize dynamic coverage of the whole area; the monitoring index is single, mainly methane and carbon monoxide, ignoring toxic gases such as sulfur dioxide and hydrogen sulfide; the equipment has weak anti-interference ability, and the strong electromagnetic environment in the mine easily leads to distortion of monitoring data; in addition, the traditional system lacks real-time linkage mechanism of ventilation and prevention, and relies on manual intervention after gas exceeds the standard, with lagging emergency response.

[0004] Therefore, it is necessary to provide a coal mine underground multi-gas collaborative prevention and intelligent ventilation integrated device to solve the problems in the background art. SUMMARY

[0005] To achieve the above purpose, the present application provides the following technical scheme: a coal mine underground multi-gas collaborative prevention and intelligent ventilation integrated device, comprising:

[0006] A ventilation section is arranged in series along the coal mine underground, which includes two parallel square tubes, one square tube is connected with an inlet, the other square tube is connected with an outlet, and a gas guide system is installed on the square tube;

[0007] A suspension rail is arranged between the two square tubes, a moving seat is installed on the suspension rail, a T-shaped pipe for connecting the two gas guide systems is installed on the moving seat, and an intelligent ventilation device is connected to the middle part of the T-shaped pipe.

[0008] As a preferred technical scheme of the present application, the gas guide system comprises:

[0009] Gas guide ports are arranged in series along the side wall of the square tube;

[0010] A top roller is rotatably arranged on the moving seat, and a pressing roller is rotatably arranged on the moving seat on both sides of the top roller;

[0011] A sealing belt is arranged outside the gas guide port, the long belt edge is connected to the square tube by magnetic attraction strips, and the sealing belt passes through the inner roller surface of the pressing roller and the outer roller surface of the top roller, and forms a trapezoidal cavity for connecting the T-shaped pipe.

[0012] As a preferred technical scheme of the present application, the moving seat at the trapezoidal cavity is provided with a square tube contacting walking roller.

[0013] As a preferred technical scheme of the present application, the intelligent ventilation device comprises:

[0014] The hanging seat is provided with a side ring opening in the middle and an upper circular opening in the upper part which is communicated with the side ring opening;

[0015] The hanging cover frame is sleeved outside the hanging seat and is provided with a collection ring at the bottom, and the collection ring is provided with a filter ring which surrounds the outside of the side ring opening;

[0016] The gas guide cover is covered on the upper end of the upper circular opening and is connected with the L-shaped tube at the upper end;

[0017] The monitoring mechanism is arranged in the upper circular opening.

[0018] As a preferred technical scheme of the present application, the monitoring mechanism comprises:

[0019] The separation disc is installed at the bottom of the upper circular opening and is provided with a containing cavity in the center and a lower opening cavity and an upper opening cavity which are alternately arranged on the outer ring surface, the lower opening cavity is communicated with the side ring opening, and the upper opening cavity is communicated with the upper circular opening above the separation disc;

[0020] The flow guide disc is fixed in the containing cavity and is provided with a series flow ring cavity in the inside, a rotating block is arranged in the center of the series flow ring cavity, a plurality of monitoring heads are installed on the outer side wall of the rotating block, the flow guide disc is provided with a first through opening and a second through opening which are communicated with the series flow ring cavity, and the side ring opening, the first through opening and the series flow ring cavity are communicated, and the series flow ring cavity, the second through opening and the upper opening cavity are communicated;

[0021] The motor is installed in the hanging seat and is connected with the rotating block at the output end.

[0022] As a preferred technical scheme of the present application, the monitoring head comprises:

[0023] The monitoring cylinder is fixed on the side wall of the rotating ring and is provided with a sliding plunger which is connected with the cylinder bottom through a spring at the cylinder opening, and the sliding plunger is connected with the cylinder wall of the monitoring cylinder through a limiting telescopic rod;

[0024] The monitoring element is arranged on the inner cylinder wall in the monitoring cylinder.

[0025] As a preferred technical scheme of the present application, the outer wall of the cylinder opening of the monitoring cylinder is provided with a sealing extension piece which is in contact with the outer wall of the series flow ring cavity.

[0026] As a preferred technical scheme of the present application, the outer wall of the side ring opening is provided with a dispersion ring fan which rotates.

[0027] As a preferred technical scheme of the present application, the upper end of the dispersion ring fan is connected with an extension ring cover, and the extension ring cover is provided with an inner brush strip and an outer brush strip which are in contact with the inner and outer walls of the filter ring.

[0028] As a preferred technical scheme of the present application, the lower end of the hanging seat is provided with a gas release cavity, the lower end face of the gas release cavity is provided with uniform dispersion holes, the side ring face of the gas release cavity is provided with jet holes, and a nitrogen tank is arranged in the hanging seat and connected with the gas release cavity.

[0029] Compared with the prior art, the present application provides a coal mine underground multi-gas synergistic prevention and intelligent ventilation integrated device, which has the following beneficial effects:

[0030] In the present application, the movable seat carries the U-shaped pipe to reciprocate along the suspension rail, and the trapezoidal cavity dynamic switching mechanism is combined to ensure that the monitoring area is covered without dead angles, the walking roller and the top roller cooperate to improve the movement stability, the problem of missed detection of traditional fixed monitoring is solved, the monitoring coverage rate is improved to more than 95%, the monitoring mechanism integrates multiple monitoring heads, and can simultaneously detect methane, carbon monoxide, hydrogen sulfide and other gases, the motor drives the rotating block to rotate, so that each monitoring head periodically completes the sampling, emptying and self-cleaning cycle, and cross contamination is avoided.

[0031] In the present application, the U-shaped pipe generates negative pressure to suck gas, and the nitrogen tank release system is combined, when the dangerous gas is monitored to be excessive, the nitrogen is vertically diffused through the uniform dispersion holes and the annular air curtain formed by the jet holes, which can dilute the local concentration, cooperate with the ventilation system to realize rapid risk removal, the filter ring intercepts dust particles, the dispersion ring fan optimizes air distribution, the inner brush strip and the outer brush strip clean the filter surface in real time, and the coal mine underground multi-gas is synergistically prevented and intelligently ventilated, so as to ensure the safety of coal mining. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a three-dimensional structure schematic diagram of the present application;

[0033] Figure 2 It is a cross-sectional structure schematic diagram of the ventilation section of the present application;

[0034] Figure 3 It is a cross-sectional structure schematic diagram of the magnetic attraction strip of the present application;

[0035] Figure 4 It is a structure schematic diagram of the intelligent ventilation device of the present application;

[0036] Figure 5 It is a structure schematic diagram of the hanging seat of the present application;

[0037] Figure 6 It is a structure schematic diagram of the separation disc of the present application;

[0038] Figure 7 It is a structure schematic diagram of the monitoring head of the present application;

[0039] Figure 8 It is a structure schematic diagram of the sealing extension piece of the present application;

[0040] In the figure: 1, hanging rail; 2, moving seat; 3, L-shaped pipe; 4, ventilation section; 5, air guide system; 6, intelligent ventilation device; 7, monitoring mechanism; 41, square pipe; 42, inlet; 43, outlet; 51, top roller; 52, pressure roller; 53, walking roller; 54, sealing belt; 55, air guide port; 56, magnetic attraction strip; 57, trapezoidal cavity; 61, hanging seat; 62, air guide cover; 63, dispersion ring fan; 64, hanging cover frame; 65, collection ring; 66, filter ring; 67, nitrogen tank; 68, gas release cavity; 611, side ring port; 612, upper circular port; 631, extension ring cover; 632, outer brush strip; 633, inner brush strip; 681, uniform dispersion hole; 682, jet hole; 71, separation disc; 72, accommodating cavity; 73, lower port cavity; 74, upper port cavity; 75, flow guide disc; 76, monitoring head; 77, rotating block; 78, motor; 751, string flow ring cavity; 752, through port one; 753, through port two; 761, monitoring cylinder; 762, limit telescopic rod; 763, sliding plunger; 764, spring; 765, monitoring element; 766, sealing extension piece. DETAILED DESCRIPTION

[0041] REFERENCE Figures 1-8 The present application provides a technical solution: a coal mine underground multi-gas collaborative prevention and intelligent ventilation integrated device, comprising:

[0042] The ventilation section 4 is arranged in series along the coal mine underground, which comprises two parallel square pipes 41, one square pipe 41 is connected with the inlet 42, the other square pipe 41 is connected with the outlet 43, and the air guide system 5 is installed on the square pipe 41;

[0043] The hanging rail 1 is arranged between the two square pipes 41, the moving seat 2 is installed on the hanging rail 1, the L-shaped pipe 3 for connecting the two air guide systems 5 is installed on the moving seat 2, and the intelligent ventilation device 6 is connected to the middle part of the L-shaped pipe 3;

[0044] In this embodiment, according to the multiple monitoring area sections divided in the coal mine underground, the corresponding ventilation section 4 is configured and installed, so that in the ventilation process of the coal mine underground, the gas in the monitoring area section where each section of the ventilation section 4 is located is monitored, ventilated and prevented. In each monitoring area section, the moving seat 2 reciprocally moves on the hanging rail 1 to control the intelligent ventilation device 6 to dynamically monitor the monitoring area section, so as to avoid missing measurement in the corner and dead angle area, and improve the comprehensiveness of the coal mine underground gas monitoring, the timeliness of the prevention and the safety of the ventilation.

[0045] In this embodiment, the air guide system 5 comprises:

[0046] The air guide ports 55 are arranged along the side walls of the square pipes 41 at intervals;

[0047] The top roller 51 rotates on the movable seat 2, and pressure rollers 52 also rotate on the movable seats 2 on both sides of the top roller 51.

[0048] A sealing strip 54 covers the outside of the air inlet 55. Its long strip edge is attached to the square tube 41 by magnetic strip 56. The sealing strip 54 passes through the inner roller surface of the pressure roller 52 and the outer roller surface of the top roller 51, and forms a trapezoidal cavity 57 for connecting the U-shaped tube 3.

[0049] In this embodiment, the ventilation process of the series ventilation section 4 is as follows: gas sequentially enters the inlet 42, the square tube 41 connected to the inlet 42, the trapezoidal cavity 57 in the square tube 41 connected to the inlet 42, the U-shaped tube 3, the square tube 41 connected to the outlet 43, the trapezoidal cavity 57 in the square tube 41 connected to the outlet 43, and the outlet 43. During the reciprocating movement of the movable seat 2, the trapezoidal cavity 57 is always connected to the cavity of the square tube 41, which makes the comprehensive monitoring of the monitoring area more flexible, sufficient, efficient and simple. In addition, the tube wall of the square tube 41 is provided with a substance that can be magnetically attracted to the magnetic strip 56, thereby ensuring that the sealing strip 54 is detached and covered outside the air inlet 55.

[0050] In this embodiment, a traveling roller 53 that contacts a square tube 41 rotates on the movable seat 2 at the trapezoidal cavity 57, which helps to improve the smoothness and stability of the movement of the movable seat 2.

[0051] In this embodiment, the intelligent ventilation device 6 includes:

[0052] The hanging base 61 has a side ring opening 611 in its middle part and an upper circular opening 612 that communicates with the side ring opening 611 in its upper part.

[0053] The cover frame 64 is fitted over the outside of the hanging base 61, and its bottom is provided with a collection ring 65. The collection ring 65 is provided with a filter ring 66 that surrounds the outside of the side ring opening 611.

[0054] The air guide cover 62 covers the upper end of the upper round opening 612, and its upper end is connected to the U-shaped tube 3;

[0055] Monitoring unit 7 is located in the upper circular opening 612;

[0056] In this embodiment, during the gas flow process in the ventilation section 4, the air guide cover 62 connected to the U-shaped pipe 3 can generate negative pressure on the upper circular opening 612 chamber below the air guide cover 62, thereby facilitating the intelligent ventilation device 6 to draw gas from the monitoring area section it is in, thereby realizing intelligent drawing of each monitoring area section, ensuring that the gas concentration and distribution in each monitoring area section in the coal mine are relatively uniform and maintained within a safe range;

[0057] In the embodiment, the process that the gas in the monitoring area section enters and is guided out of the intelligent ventilation device 6 is that, in the process that the moving seat 2 reciprocates, the U-shaped pipe 3 generates negative pressure in the chamber of the upper circular port 612 below the gas guide cover 62, and the gas in the monitoring area section can sequentially pass through the filter ring 66, the side ring port 611, pass through the monitoring mechanism 7, the upper circular port 612 above the monitoring mechanism 7, pass through the gas guide cover 62, and flow into the U-shaped pipe 3, wherein the filter ring 66 can filter and remove dust, particles and other substances in the gas, so as to avoid pollution of the monitoring mechanism 7 and ensure the accuracy of long-term monitoring of the monitoring mechanism 7.

[0058] In the embodiment, the monitoring mechanism 7 comprises:

[0059] The separation disc 71 is installed at the bottom of the upper circular port 612, and a containing cavity 72 is arranged at the center thereof, and a circumferential alternating arrangement of a lower port cavity 73 and an upper port cavity 74 is arranged on the outer ring surface of the separation disc 71, the lower port cavity 73 is in communication with the side ring port 611, and the upper port cavity 74 is in communication with the upper circular port 612 above the separation disc 71;

[0060] The flow guide disc 75 is fixed in the containing cavity 72, an in-line flow ring cavity 751 is arranged in the inside of the flow guide disc 75, a rotating block 77 is rotatably arranged at the center of the in-line flow ring cavity 751, a plurality of monitoring heads 76 are installed on the outer side wall of the rotating block 77, a first through port 752 and a second through port 753 in communication with the in-line flow ring cavity 751 are arranged on the outer side wall of the flow guide disc 75, the side ring port 611, the first through port 752 and the in-line flow ring cavity 751 are in communication, and the in-line flow ring cavity 751, the second through port 753 and the upper port cavity 74 are in communication;

[0061] The motor 78 is installed in the hanging seat 61, and the output end of the motor 78 is connected with the rotating block 77;

[0062] The separation disc 71 separates the communication interface of the side ring port 611 and the upper circular port 612, that is, the gas in the side ring port 611 is guided into the upper circular port 612 through the monitoring mechanism 7;

[0063] The outer end of the monitoring head 76 can be slightly attached to the outer ring wall of the in-line flow ring cavity 751, so that the monitoring head 76 slides on the outer ring wall of the in-line flow ring cavity 751 while maintaining a certain airtightness. It should be noted that, in the embodiment, when the U-shaped pipe 3 generates negative pressure in the chamber of the upper circular port 612 below the gas guide cover 62, a gap is formed between the monitoring head 76 and the in-line flow ring cavity 751, so that the gas can enter the in-line flow ring cavity 751 from the side ring port 611 through the first through port 752, and the gas is collected and monitored through the monitoring head 76 in the process;

[0064] The plurality of monitoring heads 76 can monitor a plurality of gases, so as to cooperatively prevent and control the multiple gases in the coal mine and intelligently ventilate;

[0065] The axial length of the annular cavity 751 is greater than the diameter of the monitoring barrel 761 in the monitoring head 76, so as to avoid the monitoring barrel 761 from separating the cavity of the annular cavity 751;

[0066] In the embodiment, when the L-shaped pipe 3 generates negative pressure in the chamber of the upper circular port 612 below the air guide cover 62, the gas passes through the side ring port 611, the lower port cavity 73, the gap between the monitoring head 76 and the annular cavity 751, the annular cavity 751, the annular cavity 751, the second through port 753, the upper port cavity 74, the chamber of the upper circular port 612 below the air guide cover 62, and the L-shaped pipe 3. During the process, the motor 78 controls the rotation of the rotating block 77. When the monitoring head 76 and the first through port 752 begin to align, align, and disengage, the gas can be temporarily collected in the monitoring head 76 and monitored. When the monitoring head 76 and the second through port 753 begin to align, align, and disengage, the temporarily collected gas can be discharged and self-cleaned, so as to improve the accuracy of each monitoring.

[0067] In the embodiment, the monitoring head 76 comprises:

[0068] The monitoring barrel 761 is fixed to the side wall of the rotating ring 75, and the barrel port is provided with a sliding plunger 763 connected to the barrel bottom through a spring 764. The sliding plunger 763 is connected to the barrel wall of the monitoring barrel 761 through a limiting telescopic rod 762.

[0069] The monitoring element 765 is arranged on the inner barrel wall of the monitoring barrel 761.

[0070] The spring 764 has a micro-elastic structure, that is, when the gas impacts the sliding plunger 763, the spring 764 can be compressed. When the gas slightly impacts the sliding plunger 763, the sliding plunger 763 can be reset.

[0071] The limiting telescopic rod 762 is used to assist in limiting the movement of the sliding plunger 763, so as to stabilize the movement of the sliding plunger 763 and improve the movement accuracy of the sliding plunger 763.

[0072] In the embodiment, the working principle of the monitoring head 76 for collecting and monitoring the gas is that when the gas impacts the sliding plunger 763, the gas can push the sliding plunger 763 to compress, so that the gas enters the monitoring barrel 761. The entering gas can be monitored and analyzed by the monitoring element 765. When the gas impact decreases, the spring 764 pushes the sliding plunger 763 to reset. At the same time, the sliding plunger 763 can clean the inner wall of the monitoring element 765 and the inner wall of the monitoring barrel 761, so as to ensure that each gas monitoring does not interfere with each other, and to obtain timely and effective samples.

[0073] In this embodiment, the outer wall of the monitoring cylinder 761 is provided with a sealing extension piece 766 in contact with the outer wall of the string flow ring cavity 751, so as to improve the time of gas entering the monitoring cylinder 761, so that the gas can enter the monitoring cylinder 761 fully and smoothly.

[0074] In this embodiment, the outer wall of the side ring port 611 is provided with a dispersion ring fan 63, so that the gas passing through the filter ring 66 is guided and dispersed by the dispersion ring fan 63, so that the gas sample collected by the monitoring head 76 is in a uniform sample.

[0075] In this embodiment, the upper end of the dispersion ring fan 63 is connected with an extension ring cover 631, and the extension ring cover 631 is provided with an inner brush strip 633 and an outer brush strip 632 in contact with the inner and outer walls of the filter ring 66, so as to clean the inner and outer walls of the filter ring 66 in real time, and ensure long-term safe operation and use of the monitoring.

[0076] In this embodiment, the lower end of the hanging seat 61 is provided with a gas release cavity 68, the lower end surface of the gas release cavity 68 is provided with a uniform hole 681, the side ring surface of the gas release cavity 68 is provided with a jet hole 682, and the hanging seat 61 is provided with a nitrogen tank 67 connected with the gas release cavity 68;

[0077] In this embodiment, when the gas in the monitoring area segment is monitored to be abnormal, nitrogen is released in time through the nitrogen tank 67 to dilute the concentration of the dangerous gas in the coal mine underground, and the ventilation safety is improved.

[0078] In specific implementation, the following steps are included:

[0079] S101: A plurality of monitoring area segments are divided along the coal mine underground, and a corresponding ventilation segment 4 is configured for each segment, wherein two parallel square tubes 41 constitute a main airflow passage, an inlet 42 introduces underground gas, and an outlet 43 discharges gas, a hanging rail 1 is erected between the two square tubes 41, a moving seat 2 carries a U-shaped tube 3 to reciprocate along the hanging rail, a gas guide system 5 dynamically connects the two square tubes 41 through a trapezoidal cavity 57, in the gas guide system 5, a sealing band 54 is adsorbed to the surface of the square tube 41 through a magnetic attraction strip 56, covering the arranged gas guide port 55, when the moving seat 2 moves, the top roller 51 cooperates with the pressure roller 52 to adjust the position of the trapezoidal cavity 57, so that the trapezoidal cavity 57 always maintains a communication state with the tube cavity of the square tube 41, the walking roller 53 contacts the outer wall of the square tube to ensure the stability of the movement, and the monitoring area is covered without dead angle;

[0080] S102: The U-shaped tube 3 is connected with the intelligent ventilation device 6, the U-shaped tube 3 generates negative pressure in the chamber of the upper circular port 612 below the gas guide cover 62, and the gas is sucked through the following path: the gas in the monitoring area segment passes through the filter ring 66, the side ring port 611, the lower port cavity 73, the through port one 752, the string flow ring cavity 751, and the gas in the string flow ring cavity 751 passes through the through port two 753, the upper port cavity 74, the gas guide cover 62, and the U-shaped tube 3 again;

[0081] S103: In S102, the gas is collected by the rotating monitoring head 76, that is, the motor 78 drives the rotating block 77 to drive the plurality of monitoring heads 76 to rotate, realizing the sampling stage. When the monitoring head 76 starts to align, aligns and departs from the through hole one 752, the gas pressure pushes the sliding plunger 763 to compress the spring 764, the gas enters the monitoring cylinder 761 and is analyzed by the monitoring element 765, the emptying stage, when the monitoring head 76 aligns with the through hole two 753, the spring 764 resets to push the sliding plunger 763 to discharge the residual gas and clean the inner wall. Among them, the sealing extension sheet 766 can enhance the sealing performance of the monitoring cylinder 761 and the series flow ring cavity 751, and the dispersion ring fan 63 uniformly disperses the filtered gas to the monitoring area;

[0082] S104: When the concentration of the dangerous gas is monitored to exceed the standard, the nitrogen tank 67 injects nitrogen into the release cavity 68, the nitrogen is vertically diffused through the uniform hole 681, and at the same time forms an annular air curtain through the jet hole 682, which rapidly dilutes the concentration of the dangerous gas. Cooperate with the ventilation system to accelerate the exhaust;

[0083] Among them, the inner brush bar 633 and the outer brush bar 632 carried by the extension ring cover 631 can clean the inner and outer surfaces of the filter ring 66 in real time, prevent dust accumulation from affecting the filtering efficiency, and the continuous reciprocating movement of the moving seat 2 periodically updates each monitoring point, avoids local pollution interference with the monitoring result, and cooperates with the intelligent ventilation to prevent and control the multiple gases in the coal mine underground.

[0084] The above is only a preferred specific embodiment of the application, but the protection scope of the application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes to the technical range disclosed in the application according to the technical solution and the inventive concept of the application, which should be covered within the protection scope of the application.

Claims

1. An integrated device for multi-gas synergistic prevention and intelligent ventilation in coal mines, characterized in that, include: Ventilation section (4) is arranged in series along the underground coal mine. It includes two parallel square tubes (41), one square tube (41) is connected to an inlet (42), and the other square tube (41) is connected to an outlet (43). A gas guiding system (5) is installed on the square tube (41). A hanging rail (1) is set between two square tubes (41). A movable seat (2) is installed on the hanging rail (1). A U-shaped tube (3) for connecting two air guiding systems (5) is installed on the movable seat (2). A smart ventilation device (6) is connected in the middle of the U-shaped tube (3). The intelligent ventilation device (6) includes: The hanging base (61) has a side ring opening (611) in its middle part and an upper round opening (612) that communicates with the side ring opening (611) in its upper part. The cover frame (64) is fitted outside the hanging base (61), and a collection ring (65) is provided at its bottom. A filter ring (66) is provided on the collection ring (65) surrounding the side ring opening (611). The air guide cap (62) covers the upper end of the upper round opening (612), and its upper end is connected to the U-shaped tube (3); The monitoring unit (7) is located in the upper circular opening (612); The monitoring agency (7) includes: The partition plate (71) is installed at the bottom of the upper circular opening (612), and has a accommodating cavity (72) in the center. Its outer ring surface has a lower oral cavity (73) and an upper oral cavity (74) arranged alternately in a circle. The lower oral cavity (73) is connected to the side ring opening (611), and the upper oral cavity (74) is connected to the upper circular opening (612) above the partition plate (71). The flow guide plate (75) is fixed in the accommodating cavity (72), and a flow ring cavity (751) is provided inside. A rotating block (77) rotates in the center of the flow ring cavity (751). Multiple monitoring heads (76) are installed on the outer wall of the rotating block (77). The outer wall of the flow guide plate (75) is provided with a first opening (752) and a second opening (753) that communicate with the flow ring cavity (751). The side ring opening (611), the first opening (752) and the flow ring cavity (751) are connected. The flow ring cavity (751), the second opening (753) and the upper oral cavity (74) are connected. The motor (78) is installed in the hanger (61), and its output end is connected to the rotating block (77).

2. The integrated device for multi-gas synergistic prevention and intelligent ventilation in coal mines according to claim 1, characterized in that, The air guiding system (5) includes: Air inlets (55) are arranged at intervals along the side wall of the square tube (41); The top roller (51) rotates on the movable seat (2), and pressure rollers (52) also rotate on the movable seats (2) on both sides of the top roller (51). A sealing strip (54) covers the outside of the air inlet (55), and its long strip edge is attached to the square tube (41) by magnetic strip (56). The sealing strip (54) passes through the inner roller surface of the pressure roller (52) and the outer roller surface of the top roller (51), and forms a trapezoidal cavity (57) for connecting the U-shaped tube (3).

3. The integrated device for multi-gas synergistic prevention and intelligent ventilation in coal mines according to claim 2, characterized in that, The traveling roller (53) that rotates on the movable seat (2) at the trapezoidal cavity (57) is in contact with the square tube (41).

4. The integrated device for multi-gas synergistic prevention and intelligent ventilation in coal mines according to claim 1, characterized in that, The monitoring head (76) includes: The monitoring cylinder (761) is fixed to the side wall of the guide plate (75). Its opening is provided with a sliding plunger (763) connected to the bottom of the cylinder by a spring (764). The sliding plunger (763) is connected to the cylinder wall of the monitoring cylinder (761) by a limiting telescopic rod (762). The monitoring element (765) is installed on the inner wall of the monitoring cylinder (761).

5. The integrated device for multi-gas synergistic prevention and intelligent ventilation in coal mines according to claim 4, characterized in that, The outer wall of the monitoring cylinder (761) is provided with a sealing extension (766) that contacts the outer wall of the flow annular cavity (751).

6. The integrated device for multi-gas synergistic prevention and intelligent ventilation in coal mines according to claim 1, characterized in that, The outer wall of the side annular opening (611) has a dispersing annular fan (63) that rotates.

7. The integrated device for multi-gas synergistic prevention and intelligent ventilation in coal mines according to claim 6, characterized in that, The upper end of the dispersion ring fan (63) is connected to the extension ring cover (631), and the extension ring cover (631) is provided with an inner brush strip (633) and an outer brush strip (632) that are in contact with the inner and outer walls of the filter ring (66).

8. The integrated device for multi-gas synergistic prevention and intelligent ventilation in coal mines according to claim 1, characterized in that, The lower end of the hanging base (61) is provided with a gas release chamber (68), the lower end face of the gas release chamber (68) is provided with a dispersion hole (681), the side circumferential surface of the gas release chamber (68) is provided with a jet hole (682), and a nitrogen tank (67) connected to the gas release chamber (68) is provided in the hanging base (61).

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