Ventilation device for preventing coal mine gas from exceeding limit
By designing a U-shaped support frame and a dust removal box, combined with a buffer and cleaning mechanism, the inconvenience of cleaning filters and vibration issues in ventilation devices are solved, achieving automated cleaning and vibration buffering, thus improving safety and equipment lifespan.
Patent Information
- Application Number
- CN202520313145.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing coal mine ventilation systems present inconveniences when cleaning filters and cannot effectively buffer vibrations during operation, leading to safety hazards and equipment damage.
The system employs a U-shaped support frame, a waste removal box, and a cleaning mechanism, combined with first and second vibration damping sections. It utilizes buffer springs and scrapers to automatically clean the filter screen, reducing manual intervention and buffering vibrations through the buffer springs.
It enables automatic filter cleaning, reduces safety hazards, extends equipment life, reduces noise, and creates a safer and more comfortable working environment.
Smart Images
Figure CN223707700U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model discloses ventilation technical field especially relates to a prevent coal mine gas over limit's ventilation device. BACKGROUND
[0002] Coal mine gas refers to the combustible gas mixture that is formed naturally in coal mines, and the main component is methane. In coal mines, methane is produced by ancient plants in the earth's crust during the formation of coal. When the coal mine stratum is mined, gas will be released from the coal seam and accumulated in the mine. The main component of gas, methane, is a colorless and odorless gas with a wide explosive concentration range. When the concentration of gas exceeds a certain proportion, only a source of sparks or open flame is needed to cause an explosion. Coal mine gas explosion is one of the important causes of coal mine disasters, which can cause serious consequences such as personnel casualties, equipment damage and mine destruction. In order to prevent gas explosion accidents, effective measures must be taken to control the accumulation and release of gas in coal mines.
[0003] In coal mines, ventilation devices are usually used to control the concentration of gas, but the ventilation devices currently used in coal mines often have the following problems when in use: 1. In order to prevent excessive impurities in the gas from blocking and corroding the pipeline, a filter screen is added to the ordinary ventilation device, but the cleaning of the filter screen is not convenient, and most of the time it needs to be disassembled and cleaned manually. When disassembling the filter screen, workers are easily harmed by the sudden outflow of gas remaining in the pipeline, and the manual cleaning method also wastes the time and energy of workers, and is not convenient to clean; 2. The ordinary ventilation device is not convenient to buffer the vibration force generated during work, and the equipment is easily damaged under long-term vibration, reducing the service life, and the noise generated by vibration also interferes with the workers' mood, and long-term work in an environment with high noise will cause irreversible damage to the human body. CONTENT OF THE UTILITY MODEL
[0004] In view of the above problems of the current ventilation device that is not convenient to clean the filter screen and cannot effectively buffer the vibration generated during work, the utility model provides a ventilation device for preventing coal mine gas from exceeding the limit.
[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:
[0006] The utility model provides a kind of ventilation device for preventing coal mine gas overrun, including U-shaped support frame, impurity removal box and ventilation pipe body, the impurity removal box has cavity, both sides are connected with the ventilation pipe body;First damping part and second damping part are provided, the impurity removal box is located in the U-shaped support frame, and is connected with the U-shaped support frame by the first damping part, and the ventilation pipe body is connected with the U-shaped support frame by the second damping part.Cleaning mechanism is provided, and the cleaning mechanism includes driving part, lead screw and moving scraper, the lead screw, moving scraper are located in the cavity, the moving scraper is threadedly connected with the lead screw, the driving part is driving connection with the lead screw, and moves the moving scraper.
[0007] Further, the bottom of the U-shaped support frame is provided with a plurality of universal wheels.
[0008] Further, the first damping part includes a crossbar, first buffer springs, moving blocks, and connecting rods. The crossbar is disposed horizontally in the U-shaped support frame. The moving blocks are two in number, each being sleeved on a side of the crossbar and sliding along the crossbar. The first buffer springs are arranged between each moving block and the inner side wall of the U-shaped support frame, and are sleeved on the crossbar. The bottom of the impurity removal box is rotationally connected to the two moving blocks via the connecting rods.
[0009] Further, the two sides of the U-shaped support frame are each provided with the second damping part. The second damping part includes a limiting block, a first limiting slot, a second limiting slot, a clamping plate, and a plurality of second buffer springs.
[0010] Further, the top of each side of the U-shaped support frame is provided with the limiting block. The top of each side of the U-shaped support frame is provided with the first limiting slot. The limiting block is provided with the second limiting slot that is adapted to the first limiting slot. The clamping plate is arranged in the first limiting slot and connected to the inner wall of the first limiting slot via the second buffer springs. The clamping plate is arranged in the second limiting slot and connected to the inner wall of the second limiting slot via the second buffer springs.
[0011] Further, one side of the limiting block is hingedly connected to the U-shaped support frame, and the other side is detachably connected to the U-shaped support frame via a plurality of bolts.
[0012] Further, the cavity of the impurity removal box is provided with a filter plate body and a suction fan. The lead screws are two in number, each being vertically disposed on a side in front of the filter plate body. The moving scraper is sleeved on the lead screws via the threaded holes formed on the two sides. The moving scraper is provided with a plurality of steel wire brushes adjacent to the filter plate body. Each steel wire brush is in contact with the filter plate body.
[0013] Further, the filter plate body is provided with a sliding groove on both sides, the moving scraper is provided with a sliding block at the corresponding position of the sliding groove, the sliding block is arranged in the sliding groove and moves along the sliding groove.
[0014] Further, the driving part comprises a motor, a rotating shaft, a first helical gear, a second helical gear and a third helical gear, the motor is fixed on the impurity removal box, the first helical gear is fixed on the transmission shaft of the motor, the second helical gear is fixed on the middle part of the rotating shaft and meshes with the first helical gear, and the third helical gear is fixed on both ends of the rotating shaft.
[0015] Further, the bottom wall of the impurity removal box is provided with a discharge port, and the discharge port is located at the bottom of the filter plate body.
[0016] The beneficial effects of the utility model are: the utility model discloses a cleaning mechanism and collecting hopper cooperation, can utilize moving scraper and scrape the impurity adhered to the surface of filter plate body to the collecting hopper, need not manual cleaning, can realize automatic cleaning, greatly improve the efficiency and ventilation effect of work, also reduce the labor cost and management cost, improve economic benefit, can also avoid the residual gas when disassembling filter plate body and gush in large quantities, avoid the direct contact of staff to potential dangerous environment, reduce the operation hidden danger and the occurrence of safety accident, improve the security and convenience when using equipment.
[0017] The utility model discloses a first damping part, second damping part and U type support frame cooperation, can utilize the resilience of second buffer spring and first buffer spring and the vibration force generated when equipment works is buffered, thereby reduce the vibration amplitude and frequency of equipment, improve the stability and running smoothness of equipment, reduce the damage and failure rate caused by vibration, can also reduce the load of equipment, delay the fatigue damage of equipment, reduce the maintenance and replacement frequency of equipment, thereby prolong the service life of equipment, and reduce the equipment vibration force can also reduce noise and vibration level, create more quiet, more comfortable working environment, reduce the adverse effect on the physical and psychological health of staff. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 The structure principle schematic drawing of one embodiment of the utility model is shown.
[0019] Figure 2 ToFigure 1 Part structure diagram of the first damping part.
[0020] Figure 3 It is the explosion view of the impurity removal box.
[0021] Figure 4 It is the cross-sectional view of Figure 3 .
[0022] Figure 5 It is the installation relationship of the moving scraper and the filter plate body.
[0023] Explanation of reference numerals: 1, U-shaped support frame; 2, universal wheel; 3, limiting clamping block; 4, cross rod; 5, first buffer spring; 6, moving block; 7, connecting rod; 8, impurity removal box; 9, ventilation pipe body; 10, second buffer spring; 11, clamping plate; 12, fastening screw; 13, collection hopper; 14, suction fan; 15, filter plate body; 16, discharge port; 17, motor; 18, first helical gear; 19, second helical gear; 20, third helical gear; 21, fourth helical gear; 22, lead screw; 23, moving scraper. DETAILED DESCRIPTION
[0024] The utility model discloses a prevent coal mine gas overlimit's ventilation device, the following with the embodiment of the utility model is specifically described in combination with the drawing.
[0025] As Figure 1 shown, a prevent coal mine gas overlimit's ventilation device includes U-shaped support frame 1, impurity removal box 8 and ventilation pipe body 9, and the impurity removal box 8 is located in the U-shaped support frame 1, and the inside of the impurity removal box 8 has a cavity, and the opposite two sides are communicated with the ventilation pipe body 9. The four corner positions of the bottom of the U-shaped support frame 1 are all installed with universal wheel 2, and the universal wheel 2 is used to realize the movement of the U-shaped support frame 1 in multiple directions along the ground.
[0026] As Figure 2As shown, the U-shaped support frame 1 is connected with the impurity removal box 8 through the first damping part, and the first damping part comprises a crossbar 4, first buffer springs 5, a moving block 6 and a connecting rod 7. The bottom of the inner side wall of the U-shaped support frame 1 is fixed with the crossbar 4 in the transverse direction. The outer surface of the crossbar 4 is sleeved with the moving block 6 on both sides, and the moving block 6 is provided with the first buffer spring 5 between the inner side wall of the U-shaped support frame 1. The first buffer spring 5 is sleeved on the crossbar 4. The top of the moving block 6 is hinged with the bottom end of the connecting rod 7, and the top of the connecting rod 7 is hinged with the bottom of the impurity removal box 8. The connecting rod 7 is provided with two groups, which are symmetrically distributed on both sides of the bottom end of the impurity removal box 8. The vibration force transmitted by the impurity removal box 8 can be more evenly dispersed, the damping and buffering effect can be effectively improved, and the concentrated bearing force on the crossbar 4 can be avoided, thereby prolonging the service life of the crossbar 4. One side of the cavity of the impurity removal box 8 is provided with a suction fan 14, and the other side is provided with a filter plate body 15. The bottom of the impurity removal box 8 is provided with a discharge port 16 in the middle, and the discharge port 16 is located below the filter plate body 15. The bottom of the impurity removal box 8 is slidably inserted with a collecting hopper 13 through a sliding rail sliding groove structure, and the opening of the collecting hopper 13 corresponds to the discharge port 16, which is used for collecting the impurities falling from the filter plate body 15.
[0027] In combination Figure 3 and Figure 4 As shown, the U-shaped support frame 1 is connected with the ventilation pipe body 9 through the second damping part, and the second damping part comprises a limiting block 3, a first limiting slot, a second limiting slot, a third limiting slot, a clamping plate 11 and a plurality of second buffer springs 10. The top of the U-shaped support frame 1 is provided with the limiting block 3 on both sides, one side of the limiting block 3 is hinged with one side of the U-shaped support frame 1, and the other side of the limiting block 3 is outwardly extended to form a first connecting plate. The edge of the other side of the U-shaped support frame 1 is outwardly extended to form a second connecting plate, and the second connecting plate is detachably connected with the first connecting plate through a plurality of fastening screws 12, so that the U-shaped support frame 1 and the limiting block 3 can be conveniently detached, and the ventilation pipe body 9 can be conveniently clamped and fixed. The top of the U-shaped support frame 1 on both sides is provided with a semicircular first limiting slot, and the bottom of the limiting block 3 is provided with a semicircular second limiting slot. The first limiting slot and the second limiting slot are adaptively combined into a circular shape. A plurality of second buffer springs 10 are fixed on the inner wall surface of the first limiting slot and the inner wall surface of the second limiting slot, and each second buffer spring 10 is equidistantly arranged on the circular wall surface combined by the first limiting slot and the second limiting slot in a circumferential array. The outer end of each second buffer spring 10 in the first limiting slot is fixedly connected with a semicircular clamping plate 11, and the outer end of each second buffer spring 10 in the second limiting slot is also fixedly connected with a semicircular clamping plate 11. The clamping plate 11 is adapted to the ventilation pipe body 9, so that the clamping plate 11 and the ventilation pipe body 9 can be more closely combined, and the vibration force transmitted by the ventilation pipe body 9 can be effectively and uniformly buffered.
[0028] The impurity removal box 8 is provided with a cleaning mechanism, which comprises a driving part, a lead screw and a moving scraper 23, and the lead screw and the moving scraper 23 are located in the cavity of the impurity removal box 8. The driving part comprises a motor 17, a rotating shaft, a first bevel gear 18, a second bevel gear 19 and a third bevel gear 20, the motor 17 is fixedly connected to the top of the impurity removal box 8, and the output end of the motor 17 is fixedly connected with the first bevel gear 18 through a bearing seat. The second bevel gear 19 is fixedly connected to the middle part of the rotating shaft and is engaged with the first bevel gear 18. There are two lead screws 22, which are respectively arranged on the two sides of the front of the filter plate body 15 in the vertical direction. The lower ends of the two lead screws 22 are rotatably connected to the bottom wall of the impurity removal box 8, and the upper ends of the two lead screws 22 penetrate through the top wall of the impurity removal box 8 and are fixedly connected with the fourth bevel gear 21. The two ends of the rotating shaft are fixedly connected with the third bevel gear 20, and the third bevel gear 20 is engaged with the fourth bevel gear 21. One motor 17 can make the two third bevel gears 20 rotate at the same time, thereby making the two lead screws 22 rotate at the same time. The moving scraper 23 is arranged between the two lead screws 22, the two sides of the moving scraper 23 are provided with threaded holes, and the threaded holes are matched with the lead screws 22, so that the moving scraper 23 can stably move up and down along the lead screws 22 under the driving of the motor 17. As shown in FIG. 1, a plurality of steel wire brushes are arranged on one side of the moving scraper 23 adjacent to the filter plate body 15, and each steel wire brush is in contact with the surface of the filter plate body 15 for cleaning the impurities attached to the surface of the filter plate body 15. Figure 5 As shown in FIG. 1, a plurality of steel wire brushes are arranged on one side of the moving scraper 23 adjacent to the filter plate body 15, and each steel wire brush is in contact with the surface of the filter plate body 15 for cleaning the impurities attached to the surface of the filter plate body 15.
[0029] Working principle: first, two groups of ventilation pipe body 9 are placed in the inner surface of the clamping plate 11 at the top of the U-shaped support frame 1, then the hinge rotating limiting block 3 is connected, so that the four groups of clamping plates 11 are respectively sleeved on the outer surfaces of the two groups of ventilation pipe bodies 9, then the fastening screws 12 are tightened to fix the U-shaped support frame 1 and the limiting block 3, the universal wheel 2 is used to move the U-shaped support frame 1 to the place where ventilation is needed, and then the power supply is turned on to supply power to the suction fan 14 and the motor 17, wherein the suction fan 14 adopts a centrifugal type toxic gas exhaust fan which is stable in operation and has obvious suction effect, and the motor 17 is a stepping motor which is sensitive in response and strong in controllability, the suction fan 14 sucks the gas in the coal mine into the impurity removal box 8 through one of the ventilation pipe bodies 9, and the impurities in the gas are filtered out when passing through the filter plate body 15 and then discharged. When it is necessary to clean the impurities attached to the filter plate body 15, the motor 17 is started, so that the output end of the motor 17 drives the first helical gear 18 to rotate, the first helical gear 18 drives the second helical gear 19 to mesh and rotate, the second helical gear 19 drives the shaft inserted therebetween to rotate, and the two groups of third helical gears 20 are simultaneously rotated, the two groups of fourth helical gears 21 are rotated, and the lead screw 22 is rotated, and the moving scraper 23 moves downward along the outer surface of the lead screw 22, so that the impurities attached to the surface of the filter plate body 15 are scraped off and fall into the discharge opening 16, and then the impurities fall into the collecting hopper 13 through the discharge opening 16, and the worker can clean the impurities by taking out the collecting hopper 13 every certain period of time.
[0030] When the device works and generates vibration, the ventilation pipe body 9 transmits the vibration force to the second buffer spring 10 through the clamping plate 11, the second buffer spring 10 buffers the vibration force by using the rebound force, and the vibration force transmitted from the impurity removal box 8 is transmitted to the connecting rod 7, so that the connecting rod 7 continuously rotates and drives the two groups of moving blocks 6 to slide on the surface of the cross rod 4, and the first buffer spring 5 buffers the vibration force transmitted from the impurity removal box 8 by using the rebound force, so that the generated vibration is effectively buffered.
[0031] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples, and the changes, modifications, additions or replacements made by the person skilled in the art within the essential scope of the present application also belong to the protection scope of the present application.
Claims
1. A ventilation device for preventing gas overrun in a coal mine, characterized in that: Including U type support frame (1), the box (8) and the ventilation pipe main part (9), the box (8) has cavity, both sides are connected with the ventilation pipe main part (9);First damping part and second damping part are provided, the box (8) is located in the U type support frame (1), and is connected with the U type support frame (1) by the first damping part, the ventilation pipe main part (9) is connected with the U type support frame (1) by the second damping part;Cleaning mechanism is provided, the cleaning mechanism includes drive part, screw rod (22) and moving scraper (23), the screw rod (22), moving scraper (23) are located in the cavity, the moving scraper (23) is threadedly connected with the screw rod (22), the drive part is transmission connection with the screw rod (22), and the moving scraper (23) is moved.
2. The ventilation device for preventing gas overrun in a coal mine according to claim 1, characterized in that: The bottom of the U type support frame (1) is provided with a plurality of universal wheels (2).
3. The ventilation device for preventing gas overrun in a coal mine according to claim 1, characterized in that: The first damping part includes a crossbar (4), a first buffer spring (5), a moving block (6), and a connecting rod (7). The crossbar (4) is arranged transversely in the U type support frame (1). The moving block (6) has two, which are respectively sleeved on both sides of the crossbar (4) and slide along the crossbar (4). The first buffer spring (5) is sleeved on the crossbar (4) between the two moving blocks (6) and the inner side wall of the U type support frame (1). The bottom of the box (8) is rotationally connected with the two moving blocks (6) through a plurality of connecting rods (7).
4. The ventilation device for preventing gas overrun in a coal mine according to claim 1, characterized in that: The U type support frame (1) is provided with the second damping part on both sides. The second damping part includes a limiting block (3), a first limiting groove, a second limiting groove, a clamping plate (11), and a plurality of second buffer springs (10).
5. The ventilation device for preventing gas overrun in a coal mine according to claim 4, characterized in that: The top of both sides of the U type support frame (1) is provided with the limiting block (3). The top of both sides of the U type support frame (1) is provided with the first limiting groove. The limiting block (3) is provided with the second limiting groove matched with the first limiting groove. The first limiting groove is provided with the clamping plate (11). The clamping plate (11) is connected with the inner wall of the first limiting groove through a plurality of second buffer springs (10). The second limiting groove is provided with the clamping plate (11). The clamping plate (11) is connected with the inner wall of the second limiting groove through a plurality of second buffer springs (10).
6. The ventilation device for preventing gas overrun in a coal mine according to claim 5, characterized in that: One side of the limiting block (3) is hinged with the U type support frame (1), and the other side is detachably connected with the U type support frame (1) through a plurality of bolts.
7. The ventilation device for preventing gas overrun in a coal mine according to claim 1, characterized in that: The cavity of the impurity removal box (8) is provided with a filter plate body (15) and a suction fan (14), two screw rods (22) are vertically arranged on the two sides in front of the filter plate body (15), the two sides of the movable scraper (23) are sleeved on the screw rods (22) through the threaded holes, and a plurality of steel wire brushes are arranged on one side of the movable scraper (23) adjacent to the filter plate body (15).
8. The ventilation device for preventing gas overrun in a coal mine according to claim 7, characterized in that: The two sides of the filter plate body (15) are provided with sliding grooves, the movable scraper (23) is provided with sliding blocks at positions corresponding to the sliding grooves, the sliding blocks are arranged in the sliding grooves and move along the sliding grooves. The bottom of each side of the movable scraper (23) is provided with a triangular block, and one side of the triangular block is in contact with the surface of the filter plate body (15).
9. The ventilation device for preventing gas overrun in a coal mine according to claim 7, characterized in that: The driving part comprises a motor (17), a rotating shaft, a first helical gear (18), a second helical gear (19) and a third helical gear (20), the motor (17) is fixed on the impurity removal box (8), the first helical gear (18) is fixed on the transmission shaft of the motor (17), the second helical gear (19) is fixed on the middle part of the rotating shaft and is engaged with the first helical gear (18), and the two ends of the rotating shaft are fixed with the third helical gears (20). The upper ends of the two screw rods (22) pass through the impurity removal box (8) and are fixed with fourth helical gears (21), and the fourth helical gears (21) are engaged with the third helical gears (20).
10. The ventilation device for preventing gas overrun in a coal mine according to claim 7, characterized in that: A discharge port (16) is formed in the bottom wall of the impurity removal box (8), and the discharge port (16) is located at the bottom of the filter plate body (15). A collecting hopper (13) is slidably connected to the bottom of the impurity removal box (8), and the opening of the collecting hopper (13) is matched with the discharge port (16).