A timed sampling ventilation system for coal mine operations

Abstract

The present invention discloses a timed sampling ventilation system for coal mine operations, which comprises: a conveying pipe, in which an exhaust fan is installed; an expansion mechanism, which comprises an expansion chamber communicated with the inner cavity of the conveying pipe, and a control blocking mechanism is provided at the expansion port; a sampling mechanism, which comprises an inlet harmful gas sensor and an outlet harmful gas sensor, which are respectively installed at the air inlet and the air outlet of the conveying pipe, and the inlet harmful gas sensor and the outlet harmful gas sensor are both electrically connected to a processor module, and the processor module is electrically connected to a display module; the present invention can add a plurality of air inlet channels and air outlet channels through the expansion port as needed, and sample and analyze the gas at the inlet and outlet of the conveying pipe respectively through the sampling mechanism, analyze the gas at the inlet and outlet regularly through the processor module, and display the information through the display module, so as to facilitate flexible technical operations by operators.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mines, and in particular to a timing sampling ventilation system for coal mine operations. Background Art

[0002] Coal mines are areas where humans mine coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, people generally choose to dig tunnels underground to mine coal. This is an underground coal mine. To ensure the safety of the coal mine area, the coal mine area is generally ventilated. The existing ventilation system usually installs fixed ventilation ducts on the top, resulting in a basically fixed path of the ventilation ducts. It is difficult to adjust and add new ducts, and the function is simple. It is impossible to timely understand the air quality before and after ventilation in the coal mine, and it is impossible to adjust the ventilation effect in time. Summary of the Invention

[0003] The main purpose of the present invention is to provide a timed sampling ventilation system for coal mine operations, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a timed sampling ventilation system for coal mine operations, which includes: a conveying pipe, in which an exhaust fan is installed; an expansion mechanism, which is arranged in the middle of the conveying pipe, and the expansion mechanism includes an expansion chamber connected to the inner cavity of the conveying pipe, and an expansion port is opened on the outside of the expansion chamber, and a control blocking mechanism is provided at the expansion port; a sampling mechanism, which includes an inlet harmful gas sensor and an outlet harmful gas sensor, which are respectively installed at the air inlet and air outlet of the conveying pipe, and the inlet harmful gas sensor and the outlet harmful gas sensor are both electrically connected to a processor module, and the processor module is electrically connected to a display module.

[0005] Preferably, the control blocking mechanism includes a supporting grille and a blocking grille, the supporting grille is fixed to the inner cavity of the expansion port, the blocking grille is arranged on the inner side of the supporting grille, and the gaps on the blocking grille and the supporting grille are staggered.

[0006] Preferably, both sides of the blocking grille are slidably connected to the inner cavity of the expansion port through a slider, a return spring is installed on the inner side of the slider, and a jack is provided in the cross section of the expansion port at a position corresponding to the slider.

[0007] Preferably, a connecting pipe is sleeved at the expansion port, a docking rod is fixed to a side of the connecting pipe close to the expansion port, and the docking rod is arranged corresponding to the socket.

[0008] Preferably, a locking block is fixed on the outer side of one end of the connecting pipe close to the expansion port, a stopper is provided on the side of the locking block away from the expansion chamber, and the upper end of the stopper is rotatably connected to the expansion chamber through a control rod.

[0009] Preferably, the air inlet of the delivery pipe and the connecting pipe are both sleeved with an air intake sleeve, and the other end of the air intake sleeve is obliquely provided with a collecting port, the outer ring of the air intake sleeve is rollingly connected to a control wheel, and a drive motor is installed on one side of the control wheel, and the drive motor is connected to the corresponding delivery pipe or connecting pipe.

[0010] Preferably, the air inlet and outlet of the connecting pipe are both installed with inlet harmful gas sensors, the processor module is electrically connected to an alarm module, and the alarm module includes an alarm light and an alarm sound.

[0011] Preferably, an exhaust fan is installed in each of the connecting pipes, and the exhaust fan is electrically connected to the processor module.

[0012] Preferably, the inlet harmful gas sensor and the outlet harmful gas sensor can both be used to detect the concentrations of carbon monoxide, carbon dioxide, nitrogen dioxide, hydrogen sulfide, ammonia and hydrogen.

[0013] Compared with traditional technologies, the present invention has the following beneficial effects:

[0014] 1. The coal mine operation timed sampling ventilation system discharges harmful gases through the conveying pipe. By installing multiple expansion ports on the expansion chamber, multiple air inlet and outlet channels can be added through the expansion ports as needed, and multiple positions can be ventilated. The inlet harmful gas sensor and outlet harmful gas sensor on the sampling mechanism are used to sample and analyze the gas at the inlet and outlet of the conveying pipe respectively. The processor module regularly analyzes the gas at the inlet and outlet, and displays it through the display module, which is convenient for operators to perform flexible technical operations.

[0015] 2. The coal mine operation timed sampling ventilation system inserts the corresponding connecting pipe into the expansion port, inserts the docking rod into the socket at this time, and pushes the slider to move, thereby pushing the inner blocking grille, so that the gas can flow through the gap between the supporting grille and the blocking grille, achieving the purpose of docking and automatic connection. The connection is relatively convenient. Through the set air intake sleeve, the control wheel drives the air intake sleeve to rotate, thereby rotating the inclined collection port, increasing the collection range at the entrance and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is an exploded view of some parts of the present invention;

[0018] Figure 3 This is a cross-sectional view of the control blocking mechanism of the present invention Figure 1 ;

[0019] Figure 4 This is a cross-sectional view of the control blocking mechanism of the present invention Figure 2 ;

[0020] Figure 5 It is a structural schematic diagram of the connecting pipe of the present invention;

[0021] Figure 6 This is a control principle diagram of the present invention.

[0022] In the figure: 1. Delivery pipe; 2. Expansion chamber; 3. Air intake sleeve; 4. Control wheel; 5. Drive motor; 6. Collection port; 7. Connecting pipe; 8. Expansion port; 9. Control lever; 10. Locking block; 11. Stop block; 12. Socket; 13. Blocking grille; 14. Support grille; 15. Slider; 16. Return spring; 17. Inlet harmful gas sensor; 18. Outlet harmful gas sensor; 19. Exhaust fan; 20. Processor module; 21. Display module; 22. Alarm module; 23. Docking rod. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0025] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] like Figure 1-6As shown, a timed sampling ventilation system for coal mine operations includes: a conveying pipe 1, in which an exhaust fan 19 is installed; an expansion mechanism, arranged in the middle of the conveying pipe 1, the expansion mechanism includes an expansion chamber 2 connected to the inner cavity of the conveying pipe 1, an expansion port 8 is opened on the outside of the expansion chamber 2, and a control blocking mechanism is provided at the expansion port 8; a sampling mechanism, the sampling mechanism includes an inlet harmful gas sensor 17 and an outlet harmful gas sensor 18, which are respectively installed at the air inlet and the air outlet of the conveying pipe 1, and the inlet harmful gas sensor 17 and the outlet harmful gas sensor 18 are both electrically connected to a processor module 20, and the processor module 20 is electrically connected to a display module 21.

[0027] Harmful gases are discharged through the delivery pipe. By installing multiple expansion ports on the expansion chamber, multiple air inlet channels and air outlet channels can be added through the expansion ports as needed, so that multiple positions can be ventilated. The inlet harmful gas sensor and the outlet harmful gas sensor on the sampling mechanism are used to sample and analyze the gases at the inlet and outlet of the delivery pipe respectively. The processor module regularly analyzes the gases at the inlet and outlet, and the display module displays the information, so that the operator can perform flexible technical operations.

[0028] like Figure 2-5 As shown, in this embodiment, the control blocking mechanism includes a supporting grille 14 and a blocking grille 13, the supporting grille 14 is fixed to the inner cavity of the expansion port 8, the blocking grille 13 is arranged on the inner side of the supporting grille 14, and the gaps on the blocking grille 13 and the supporting grille 14 are staggered. The two sides of the blocking grille 13 are slidably connected to the inner cavity of the expansion port 8 through a slider 15, and a return spring 16 is installed on the inner side of the slider 15. A socket 12 is provided in the cross section of the expansion port 8 at a position corresponding to the slider 15, and a connecting pipe 7 is sleeved at the expansion port 8. A docking rod 23 is fixed to the side of the connecting pipe 7 close to the expansion port 8, and the docking rod 23 is arranged corresponding to the socket 12.

[0029] By inserting the corresponding connecting pipe into the expansion port, the docking rod is inserted into the socket and the slider is pushed to move, thereby pushing the inner blocking grille, so that the gas can flow through the gap between the supporting grille and the blocking grille, achieving the purpose of docking and automatic connection, and the connection is more convenient.

[0030] like Figure 2-5As shown, in this embodiment, a locking block 10 is fixed to the outer side of one end of the connecting pipe 7 close to the expansion port 8, and a stop block 11 is provided on the side of the locking block 10 away from the expansion chamber 2. The upper end of the stop block 11 is rotatably connected to the expansion chamber 2 through a control rod 9. The air inlets of the delivery pipe 1 and the connecting pipe 7 are both sleeved with an air intake sleeve 3, and the other end of the air intake sleeve 3 is obliquely provided with a collecting port 6. The outer ring of the air intake sleeve 3 is rollingly connected to a control wheel 4, and a drive motor 5 is installed on one side of the control wheel 4. The drive motor 5 is connected to the corresponding delivery pipe 1 or connecting pipe 7.

[0031] When installing the connecting pipe, the control lever is rotated to drive the stopper to rotate, so that the stopper contacts one side of the locking block and limits the movement of the locking block to the outside, thereby connecting and fixing the connecting pipe to the expansion port. The installation is more convenient. Through the set air intake sleeve, the control wheel drives the air intake sleeve to rotate, thereby rotating the inclined collection port, increasing the collection range at the entrance and improving efficiency.

[0032] like Figure 6 As shown, in this embodiment, the air inlet and outlet of the connecting pipe 7 are installed with an inlet harmful gas sensor 17, the processor module 20 is electrically connected to an alarm module 22, the alarm module 22 includes an alarm light and an alarm sound, and each connecting pipe 7 is installed with an exhaust fan 19, the exhaust fan 19 is electrically connected to the processor module 20, and the inlet harmful gas sensor 17 and the outlet harmful gas sensor 18 can be used to detect the concentrations of carbon monoxide sensor, carbon dioxide sensor, nitrogen dioxide sensor, hydrogen sulfide, ammonia and hydrogen.

[0033] The rotation of each exhaust fan is controlled by the processor module, thereby controlling the air circulation speed. It is adjusted according to the harmful gas concentration detected by the inlet harmful gas sensor and the outlet harmful gas sensor. It can be flexibly regulated and the detected data is promptly transmitted to the corresponding display module for display. When the harmful gas concentration reaches a certain range, an alarm reminder is issued through the alarm module.

[0034] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A timed sampling ventilation system for coal mine operations, characterized by: It includes: a delivery pipe, in which an exhaust fan is installed; An expansion mechanism is provided in the middle of the delivery tube, the expansion mechanism including an expansion chamber communicating with the inner cavity of the delivery tube, an expansion port being provided on the outer side of the expansion chamber, and a control blocking mechanism being provided at the expansion port. The control blocking mechanism includes a support grid and a blocking grid, the support grid being fixed to the inner cavity of the expansion port, the blocking grid being provided on the inner side of the support grid, the blocking grid and the support grid having gaps arranged in an alternating manner, the two sides of the blocking grid being slidably connected to the inner cavity of the expansion port via a slider, a return spring being installed on the inner side of the slider, and a socket being provided at a position corresponding to the slider in the cross section of the expansion port; The sampling mechanism includes an inlet harmful gas sensor and an outlet harmful gas sensor, which are respectively installed at the air inlet and the air outlet of the delivery pipe. The inlet harmful gas sensor and the outlet harmful gas sensor are both electrically connected to a processor module, and the processor module is electrically connected to a display module.

2. A coal mine operation timed sampling ventilation system according to claim 1, characterized in that: A connecting pipe is sleeved at the expansion port, a docking rod is fixed on one side of the connecting pipe close to the expansion port, and the docking rod is arranged corresponding to the insertion hole.

3. A coal mine operation timed sampling ventilation system according to claim 2, characterized in that: A locking block is fixed on the outer side of one end of the communicating pipe close to the expansion port, and a stopper is provided on the side of the locking block away from the expansion chamber. The upper end of the stopper is rotatably connected to the expansion chamber through a control rod.

4. A coal mine operation timed sampling ventilation system according to claim 3, characterized in that: The air inlets of the delivery pipe and the connecting pipe are both sleeved with an air intake sleeve, and a collecting port is obliquely provided at the other end of the air intake sleeve. The outer ring of the air intake sleeve is rollingly connected to a control wheel, and a drive motor is installed on one side of the control wheel. The drive motor is connected to the corresponding delivery pipe or connecting pipe.

5. A coal mine operation timed sampling ventilation system according to claim 4, characterized in that: The air inlet and outlet of the connecting pipe are both installed with inlet harmful gas sensors, and the processor module is electrically connected to an alarm module, which includes an alarm light and an alarm sound.

6. A coal mine operation timed sampling ventilation system according to claim 5, characterized in that: An exhaust fan is installed in each of the connecting pipes, and the exhaust fan is electrically connected to the processor module.

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