Ventilation safety monitoring equipment for coal mine
Through the design of the spherical air intake filter and motor, combined with the dust cleaning port and sensor, the problems of high shutdown frequency and labor intensity of existing equipment are solved, and longer dust cleaning intervals and better ventilation and safety monitoring are achieved.
Patent Information
- Application Number
- CN202421201335.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-01-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing coal mine ventilation safety monitoring equipment can only be filtered on one side, and when the filter surface area is severe, it needs to be disassembled and cleaned regularly, resulting in a high frequency of shutdown and a high labor intensity, which affects ventilation safety.
A ventilation safety monitoring device including a spherical air intake filter and a motor is designed. The spherical mesh can rotate 180°. The motor drives the filter to rotate to extend the interval of dust cleaning. The dust cleaning port is set for easy cleaning, combined with the air duct sensor and dust. Concentration sensors and methane concentration sensors monitor air quality in real time.
The cleaning interval of the intake filter is extended, the cleaning frequency and labor force are reduced, and the real-time monitoring and equipment reliability of coal mine ventilation safety are improved.
Smart Images
Figure CN222296278U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal mine ventilation, in particular to ventilation safety monitoring equipment for coal mines. Background Art
[0002] Coal is one of China's important energy resources, but the coal mining environment is often harsh. Mine ventilation safety has always been one of the important issues facing the coal industry. During the mining process, a large amount of gas and coal dust and other gas dust will be generated. Once they encounter open flames, they will cause explosions. Mine ventilation equipment can discharge these combustible gases in time. In order to ensure the safety and reliability of mine ventilation, it is necessary to monitor mine ventilation to grasp the pollutant content in the mine ventilation air, so that personnel can judge the underground air conditions and the working conditions of the ventilation equipment according to the pollutant content in the ventilation air.
[0003] After searching, the patent authorization announcement number is CN 212563749 U discloses a ventilation safety monitoring device for coal mines, "including a shell, a mounting plate fixedly connected to the surface of the shell, a first mounting bolt threadedly connected to the mounting plate, a mounting frame threadedly connected to the left and right sides of the shell through a second mounting bolt, a dust screen fixedly connected to the mounting frame, a mounting column fixedly connected to the inner wall of the shell, and a motor box fixedly connected between the mounting columns; the utility model, by setting the dust screen, can reduce the amount of dust in the air passing through the shell, thereby avoiding excessive dust from adhering to the device, by rotating the motor, the motor drives the fan blade to rotate, so that the outside air can be blown into the mine, by connecting the bolt, the connecting bolt can be rotated to remove the connecting bolt from the nut, so that the fan blade can be removed from the rotating block, the whole device has a reasonable structure, is easy to use, and has strong practicality", but the dust screen of the above equipment has only one side that can be used for filtering. When the dust screen surface is seriously covered with dust, personnel need to regularly disassemble it for cleaning, and the disassembly and cleaning process requires shutdown operation, which makes the existing equipment shutdown frequency relatively high, which has a greater impact on the ventilation of the coal mine, and the cleaning frequency is high, and the labor intensity of personnel is high. Utility Model Content
[0004] The purpose of the utility model is to provide a ventilation safety monitoring device for coal mines to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A ventilation safety monitoring device for a coal mine comprises a ventilation duct and an exhaust fan, wherein an air inlet is provided at the rear portion of the ventilation duct, a fixed seat is arranged in the ventilation duct at a position relative to the air inlet, an annular cavity is provided in the middle of the fixed seat, an air intake filter is arranged in the annular cavity, the air intake filter comprises a spherical mesh body, an air outlet port and a rotating shaft, an air outlet port is provided at the upper portion of the spherical mesh body, a rotating shaft is installed at the bottom of the spherical mesh body, a baffle is arranged on the outer wall of the spherical mesh body, the top of the air intake filter passes through the fixed seat and is rotatably connected to an upper bearing installed in the ventilation duct, the bottom of the air intake filter is rotatably connected to a lower bearing installed at the bottom of the fixed seat, the bottom end of the air intake filter is directly connected to an output shaft of a motor installed at the bottom of the ventilation duct, a fixed frame is installed in the air outlet of the ventilation duct, an exhaust fan is installed on the fixed frame, and a wind tube sensor, a dust concentration sensor and a methane concentration sensor are installed in the middle of the ventilation duct.
[0007] As a further solution of the utility model: an air outlet filter is installed outside the air outlet.
[0008] As a further solution of the utility model: the annular cavity is adapted to the air intake filter, and the inner wall of the annular cavity is in contact with the outer edge of the baffle.
[0009] As a further solution of the utility model: a dust cleaning port is provided on the ventilation duct at a position opposite to the air inlet, a dust cleaning door panel is installed on the dust cleaning port, and the four corners of the dust cleaning door panel are sealed and connected to the ventilation duct by screws.
[0010] As a further solution of the utility model: the wind tube sensor, dust concentration sensor and methane concentration sensor are all connected to an external receiving device through wires.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. The utility model is provided with an air intake filter and a motor. The air intake filter adopts a spherical design and can rotate under the drive of the motor. When too much dust accumulates on the surface of the air intake filter facing the air inlet, the motor can be used to drive the air intake filter to rotate 180° to rotate the other side of the air intake filter to face the air inlet for filtering. This can extend the cleaning interval of the air intake filter, reduce the cleaning frequency, and reduce the workload of personnel.
[0013] 2. The utility model is equipped with a wind tube sensor, a dust concentration sensor and a methane concentration sensor. The wind tube sensor, the dust concentration sensor and the methane concentration sensor can respectively detect the wind speed, dust concentration and methane concentration in the ventilation duct, so that personnel can grasp the concentration of harmful substances in the air and the use of the filter in the ventilation process of the coal mine in real time, so as to better ensure the ventilation safety of the coal mine. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a side sectional view of a ventilation safety monitoring device for coal mines.
[0015] Figure 2 It is a side view of a ventilation safety monitoring device for coal mines.
[0016] Figure 3 The figure is a front view of a ventilation safety monitoring device for a coal mine.
[0017] Figure 4 A ventilation safety monitoring device for coal mines Figure 1 Schematic diagram of the overall structure of the middle air intake filter.
[0018] Figure 5 A ventilation safety monitoring device for coal mines Figure 1 Schematic diagram of the overall structure of the middle fixed seat.
[0019] 1. Ventilation duct; 2. Air outlet; 3. Air inlet; 4. Air inlet filter; 401. Spherical mesh; 402. Air outlet port; 403. Rotating shaft; 404. Baffle; 5. Upper bearing; 6. Fixed seat; 7. Motor; 8. Lower bearing; 9. Dust removal port; 10. Dust removal door panel; 11. Fixed bracket; 12. Exhaust fan; 13. Air duct sensor; 14. Dust concentration sensor; 15. Methane concentration sensor; 16. Air outlet filter; 17. Annular cavity. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-5In the embodiment of the utility model, a ventilation safety monitoring device for a coal mine comprises a ventilation pipe 1 and an exhaust fan 12, an air inlet 3 is provided at the rear of the ventilation pipe 1, a fixing seat 6 is provided in the ventilation pipe 1 at a position opposite to the air inlet 3, an annular cavity 17 is provided in the middle of the fixing seat 6, an air intake filter 4 is provided in the annular cavity 17, the air intake filter 4 comprises a spherical mesh body 401, an air outlet port 402 and a rotating shaft 403, an air outlet port 402 is provided at the upper part of the spherical mesh body 401, a rotating shaft 403 is installed at the bottom of the spherical mesh body 401, a baffle 404 is provided on the outer wall of the spherical mesh body 401, the top of the air intake filter 4 passes through the fixing seat 6 and is rotatably connected to the upper bearing 5 installed in the ventilation pipe 1, the bottom of the air intake filter 4 is rotatably connected to the lower bearing 8 installed at the bottom of the fixing seat 6, and the bottom end of the air intake filter 4 is directly connected to the output shaft of the motor 7 installed at the bottom of the ventilation pipe 1;
[0022] The annular cavity 17 is adapted to the air intake filter 4, and the inner wall of the annular cavity 17 is in contact with the outer edge of the baffle 404. This design can seal the contact position between the air intake filter 4 and the annular cavity 17, preventing air from escaping from the gap around the air intake filter 4.
[0023] A cleaning port 9 is provided on the ventilation duct 1 at a position opposite to the air inlet 3, and a cleaning door panel 10 is installed on the cleaning port 9. The four corners of the cleaning door panel 10 are sealed and connected to the ventilation duct 1 by screws. The setting of the cleaning port 9 can facilitate personnel to directly clean the air intake filter 4 without removing the air intake filter 4, making cleaning more convenient.
[0024] See also Figure 1-2 A fixing frame 11 is installed in the air outlet 2 of the ventilation pipe 1, and an exhaust fan 12 is installed on the fixing frame 11. A wind tube sensor 13, a dust concentration sensor 14 and a methane concentration sensor 15 are installed in the middle of the ventilation pipe 1. The wind tube sensor 13, the dust concentration sensor 14 and the methane concentration sensor 15 are all connected to an external receiving device through wires. An air outlet filter 16 is installed outside the air outlet 2. The air outlet filter 16 prevents external dust from entering the ventilation pipe 1 through the air outlet 2 when not in use, causing dust to fall on the exhaust fan 12. The setting of the methane concentration sensor 15 can help personnel understand and grasp the underground gas outburst conditions and change laws, calculate and distribute the air volume according to the outburst conditions at different locations and times underground, adjust the required air volume, and achieve the purpose of safe, economical and reasonable ventilation.
[0025] It should be noted that the wind tube sensor 13, the dust concentration sensor 14, the methane concentration sensor 15, the exhaust fan 12 and the motor 7 are all powered by an external power supply.
[0026] The working principle of the utility model is:
[0027] During use, the ventilation pipe 1 in the coal mine is connected to the air inlet 3, and the air enters the ventilation pipe 1 from the air inlet 3 under the suction of the exhaust fan 12, and then is filtered through the air inlet filter 4 and discharged from the air outlet 2 along the ventilation pipe 1. When the wind tube sensor 13 installed on the ventilation pipe 1 detects that the wind speed is too high and exceeds the normal wind speed or the dust concentration sensor 14 detects that the dust concentration is too high, it may be that the air inlet filter 4 is damaged. Personnel need to check the air inlet filter 4 in time and replace or repair the damaged parts in time. When the detected wind speed is too low, it may be caused by the blockage of the air inlet filter 4. At this time, start the motor 7, and the motor 7 drives the air inlet filter 4 to rotate 180°. The filter surface can be replaced and it can continue to be used. When the air inlet filter 4 needs to be cleaned, just open the cleaning door panel 10 and clean it through the cleaning port 9.
[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A ventilation safety monitoring device for a coal mine, comprising a ventilation pipe (1) and an exhaust fan (12), characterized in that: An air inlet (3) is provided at the rear of the ventilation pipe (1); a fixing seat (6) is provided in the ventilation pipe (1) at a position opposite to the air inlet (3); an annular cavity (17) is provided in the middle of the fixing seat (6); an air inlet filter (4) is provided in the annular cavity (17); the air inlet filter (4) comprises a spherical mesh body (401), an air outlet port (402) and a rotating shaft (403); an air outlet port (402) is provided at the top of the spherical mesh body (401); a rotating shaft (403) is installed at the bottom of the spherical mesh body (401); a baffle (404) is provided on the outer wall of the spherical mesh body (401); The top of the air intake filter (4) passes through the fixing seat (6) and is rotatably connected to an upper bearing (5) installed in the ventilation pipe (1); the bottom of the air intake filter (4) is rotatably connected to a lower bearing (8) installed at the bottom of the fixing seat (6); the bottom end of the air intake filter (4) is directly connected to an output shaft of a motor (7) installed at the bottom of the ventilation pipe (1); a fixing frame (11) is installed in the air outlet (2) of the ventilation pipe (1); an exhaust fan (12) is installed on the fixing frame (11); and a wind tube sensor (13), a dust concentration sensor (14) and a methane concentration sensor (15) are installed in the middle of the ventilation pipe (1).
2. A ventilation safety monitoring device for coal mines according to claim 1, characterized in that: An air outlet filter (16) is installed outside the air outlet (2).
3. A ventilation safety monitoring device for coal mines according to claim 1, characterized in that: The annular cavity (17) is adapted to the air intake filter (4), and the inner wall of the annular cavity (17) is in contact with the outer edge of the baffle (404).
4. A ventilation safety monitoring device for coal mines according to claim 1, characterized in that: A dust cleaning port (9) is provided on the ventilation pipe (1) at a position opposite to the air inlet (3), and a dust cleaning door panel (10) is installed on the dust cleaning port (9). The four corners of the dust cleaning door panel (10) are sealed and connected to the ventilation pipe (1) by screws.
5. A ventilation safety monitoring device for coal mines according to claim 1, characterized in that: The wind tube sensor (13), the dust concentration sensor (14) and the methane concentration sensor (15) are all connected to an external receiving device via wires.