A drill bit maintenance device for coal mining

Abstract

The utility model discloses a drill bit maintenance device for coal mining belongs to mining equipment technical field. The device is aimed at solving the safety hidden danger of not cooling in time of high temperature metal scrap and the problem of low efficiency caused by filter screen easy to block of prior art. It includes the collection box of setting and containing the first filter screen and containing cooling water, air pump and first pipeline, the collection box still is equipped with motor, cleaning brush and transmission mechanism, and the transmission mechanism includes the slide bar of fixed cleaning brush with motor connection's rotary lever, connecting rod, motor drives cleaning brush reciprocating motion along the surface of first filter screen through transmission mechanism. When working, the air pump generates negative pressure and inhales high temperature scrap into water and instantaneously cools off, and cleaning brush prevents filter screen from blocking and guarantees suction stability. The utility model still is equipped with the second filter screen of magnetic formula quick detach and adopts explosion -proof motor and air pump, has the advantages such as instantaneously cooling off, intrinsic safety is high, suction is durable and stable, and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, and in particular to a drill bit maintenance device for coal mining. Background Technology

[0002] In coal mining operations, regular maintenance of drill bits is a crucial step in ensuring mining efficiency and safety. Maintenance processes, such as grinding and trimming, inevitably generate a large amount of high-temperature metal debris, which often contains sparks. In the underground environment of a coal mine, filled with coal dust and explosive gases such as methane, any source of high temperature or spark can become an ignition source, posing a significant safety hazard.

[0003] Therefore, existing technologies typically employ negative pressure vacuum cleaners to collect these debris. However, traditional vacuum cleaners merely suck the debris into the collection box without effectively cooling and extinguishing the hot debris itself, thus posing a safety risk. More seriously, these sucked-in metal debris quickly accumulate and clog the device's filter. This clogging causes a sharp drop in the device's negative pressure suction, significantly reducing collection efficiency and even rendering it ineffective. To restore functionality, frequent shutdowns are necessary for disassembly and manual cleaning, disrupting maintenance, reducing efficiency, and increasing worker workload.

[0004] Therefore, this utility model proposes a drill bit maintenance device for coal mining to overcome the shortcomings of the prior art. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a maintenance device for drill bits used in coal mining, aiming to improve the existing technology of drill bit maintenance devices for coal mining, which have the problems of lack of immediate cooling and extinguishing function for high-temperature debris, which poses a safety hazard, and easy clogging of the filter screen leading to a decrease in suction power and requiring frequent manual cleaning, resulting in low efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A drill bit maintenance device for coal mining includes: a collection box, a first filter screen disposed in the collection box, a first pipe, and an air pump; as well as a motor, a cleaning brush, and a transmission mechanism.

[0007] The collection box is used to hold cooling water.

[0008] Furthermore, a transmission mechanism is used to connect the motor and the cleaning brush. The transmission mechanism includes a rotating rod connected to the output end of the motor, a connecting rod hinged to the rotating rod, and a sliding rod. The cleaning brush is fixed on the sliding rod, and the connecting rod drives the sliding rod to combine the cleaning brush in a reciprocating motion along the surface of the first filter screen.

[0009] Preferably, the transmission mechanism further includes a slide rail and a slider that can slide within the slide rail, with the slide rod passing through the slider to enhance the stability of the reciprocating motion.

[0010] Preferably, the device further includes a limiting block disposed on the movement path of the slide bar, for limiting the movement range of the slide bar.

[0011] Preferably, the opening of the collection box is provided with a cover plate, the cover plate is provided with a handle, and a sealing strip is provided between the contact edge of the cover plate and the collection box to ensure the airtightness of the device.

[0012] Preferably, the coal mining drill bit maintenance device further includes a second pipe and a second filter screen disposed in the second pipe. The second pipe is connected between the air pump and the collection box for secondary filtration of air.

[0013] Preferably, the second pipe is provided with a support frame, and the support frame has a circular groove; the second filter screen is provided with a rod, which is inserted into the circular groove, and the second filter screen and the support frame are fixed by magnetic attraction.

[0014] Preferably, the second filter screen is provided with a pull ring for easy removal and separation by the user.

[0015] Preferably, the motor is an explosion-proof motor, and the air pump is an explosion-proof air pump, in order to adapt to the high safety requirements of the underground coal mine environment.

[0016] This utility model has the following beneficial effects: 1. This utility model, by setting up a collection box that can hold cooling water, uses negative pressure to directly suck high-temperature metal debris into the water, and selects an explosion-proof motor and an explosion-proof air pump as the power source. It solves the problems of existing technologies that lack immediate cooling and extinguishing methods for high-temperature debris and associated sparks, and that electrical components pose a risk of igniting explosive gases, which are serious safety hazards in environments such as coal mines. It achieves the effect of rapidly cooling debris, completely extinguishing sparks, and eliminating the risk of electrical spark ignition from the root, which greatly improves the inherent safety and compliance of the device in flammable and explosive hazardous environments.

[0017] This invention solves the problems of existing filter devices where the filter screen is easily clogged by debris, resulting in decreased suction, frequent shutdowns for manual cleaning, and low work efficiency. It achieves the effects of preventing filter screen clogging, maintaining stable suction, and realizing automated maintenance, reducing the frequency of manual intervention and labor intensity, and improving the continuity and efficiency of equipment operation.

[0018] This invention solves the problem of complex, time-consuming, and labor-intensive maintenance and disassembly of the internal filter screen in existing devices by designing a quick-release structure between the second filter screen and the support frame, which is a plug-in joint between a rod and a circular groove and fixed by magnetic attraction, and by setting a pull ring. It achieves the effect of quickly disassembling and assembling the second filter screen by hand for cleaning or replacement, greatly simplifying the maintenance process and improving the humanization and ease of use of the equipment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a drill bit maintenance device for coal mining proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the second pipeline of a drill bit maintenance device for coal mining proposed in this utility model; Figure 3 This is a schematic diagram of the motor structure of a drill bit maintenance device for coal mining proposed in this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the structure of the first filter screen of a drill bit maintenance device for coal mining proposed in this utility model; Figure 6 This is a schematic diagram of the circular groove of a drill bit maintenance device for coal mining proposed in this utility model.

[0020] Legend: 1. Maintenance device body; 2. First pipe; 3. Collection box; 4. Air pump; 5. Second pipe; 6. Cover plate; 7. Handle; 8. Motor; 9. Rotating rod; 10. Connecting rod; 11. Slider; 12. Slide rail; 13. Slide rod; 14. Limit block; 15. Cleaning brush; 16. First filter screen; 17. Sealing strip; 18. Support frame; 19. Circular groove; 20. Insert rod; 21. Second filter screen; 22. Pull ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-6One embodiment of this utility model is a maintenance device for coal mining drill bits. The maintenance device for coal mining drill bits includes a collection box 3 as the main frame. The collection box 3 is used to hold cooling water. One end of the first pipe 2 is used to connect to the maintenance device body 1 to suck up debris. The other end of the first pipe 2 is connected to the interior of the collection box 3.

[0023] A cover plate 6 is detachably installed at the opening of the collection box 3. A handle 7 is fixedly connected to the cover plate 6, and a sealing strip 17 is provided on the edge of the cover plate 6 to achieve a sealed connection with the collection box 3. An air pump 4 is connected to the collection box 3 through a second pipe 5 to extract air from the inside of the collection box 3 to create a negative pressure environment.

[0024] The coal mining drill bit maintenance device also includes a transmission mechanism for automatic cleaning and a cleaning brush 15 that is linked to the transmission mechanism inside the collection box 3.

[0025] The automatic cleaning structure is as follows: a motor 8 is fixedly installed inside the collection box 3. The output end of the motor 8 is fixedly connected to a rotating rod 9. One end of a connecting rod 10 is rotatably connected to the rotating rod 9, and the other end of the connecting rod 10 is connected to a sliding rod 13. A slide rail 12 is also fixedly installed on the inner wall of the collection box 3. A slider 11 is slidably connected inside the slide rail 12, and the sliding rod 13 passes through and is fixed to the slider 11. A cleaning brush 15 is fixedly installed on the sliding rod 13, and the bristles of the cleaning brush 15 are in contact with the surface of the first filter screen 16. A limit block 14 is also fixedly installed on the movement path of the sliding rod 13 to limit the movement stroke of the sliding rod 13. When the motor 8 works, the rotational motion is converted into the reciprocating linear motion of the sliding rod 13 through the transmission of the rotating rod 9 and the connecting rod 10, thereby driving the cleaning brush 15 to continuously and repeatedly brush the surface of the first filter screen 16, thus effectively preventing clogging caused by debris accumulation and ensuring the long-term stability of the suction power of the device.

[0026] In a preferred embodiment, to protect the air pump 4, a second pipe 5 is connected between the air pump 4 and the collection box 3, and a second filter 21 is provided inside the second pipe 5 to perform secondary filtration on the air to be drawn out in order to intercept any fine particles that may be present.

[0027] Furthermore, to facilitate the cleaning and replacement of the second filter screen 21, a support frame 18 is fixedly installed inside the second pipe 5. The support frame 18 has a circular groove 19, and the second filter screen 21 is correspondingly provided with a plug rod 20. The plug rod 20 can be inserted into the circular groove 19. The second filter screen 21 and the support frame 18 are fixed by magnetic attraction to ensure a stable connection and convenient disassembly. The second filter screen 21 is also fixedly connected with a pull ring 22 for easy removal and separation by the user.

[0028] Specifically, considering the high-risk application environment of coal mining, in order to ensure the safe operation of the device, the motor 8 used in this embodiment is an explosion-proof motor, and the air pump 4 is an explosion-proof air pump.

[0029] Working principle: When the air pump 4 and motor 8 are started, the air pump 4 extracts air from the inside of the collection box 3 through the second pipe 5, forming a sealed space under the combined action of the cover plate 6 and the sealing strip 17, thus creating a negative pressure environment inside the collection box 3. This negative pressure environment causes the high-temperature metal debris generated by the maintenance device body 1 when maintaining the drill bit to be forcefully sucked into the collection box 3 through the first pipe 2. The debris falls into the water body in the collection box 3 used to hold cooling water and is intercepted by the first filter screen 16, thereby achieving immediate cooling and extinguishing of sparks. At the same time, after the motor 8 starts, its output end drives the rotating rod 9 to rotate, and the rotating rod 9 drives the slide rod 13 fixed thereon through the connecting rod 10. The slider 11 slides back and forth in the slide rail 12, while the slide rod 13 moves within the stroke limited by the limit block 14, thereby driving the cleaning brush 15 fixed on the slide rod 13 to make a continuous reciprocating linear motion along the surface of the first filter screen 16, constantly brushing off the debris attached to the first filter screen 16, thus solving the problem of easy clogging of the filter screen; the air filtered by the first filter screen 16 will be filtered again by the second filter screen 21 before being drawn out by the air pump 4. When the second filter screen 21 needs to be cleaned, the cover plate 6 can be opened by the handle 7, and the pull ring 22 can be pulled to easily overcome the magnetic attraction and separate the insertion rod 20 from the circular groove 19 on the support frame 18, so that the second filter screen 21 can be taken out.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drill bit maintenance device for coal mining, comprising: Collection box (3), wherein a first filter (16) is provided inside the collection box (3); The first pipe (2) has one end connected to the body of the maintenance device (1) to suck up debris, and the other end connected to the collection box (3); An air pump (4) is connected to the collection box (3) to generate negative pressure therein. Its features are: The collection box (3) is used to hold cooling water; The device also includes a motor (8), a cleaning brush (15), and a transmission mechanism for connecting the motor (8) and the cleaning brush (15); The transmission mechanism includes a rotating rod (9) connected to the output end of the motor (8), a connecting rod (10) hinged to the rotating rod (9), and a sliding rod (13). The cleaning brush (15) is fixed on the slide bar (13), and the connecting rod (10) drives the slide bar (13) so that the cleaning brush (15) reciprocates along the surface of the first filter screen (16).

2. The drill bit maintenance device for coal mining according to claim 1, characterized in that, The transmission mechanism also includes a slide rail (12) and a slider (11) that can slide within the slide rail (12), with the slide rod (13) passing through the slider (11).

3. The drill bit maintenance device for coal mining according to claim 1, characterized in that, The device also includes a limiting block (14) disposed on the movement path of the slide bar (13).

4. The drill bit maintenance device for coal mining according to claim 1, characterized in that, The collection box (3) has a cover plate (6) at its opening, and a handle (7) is provided on the cover plate (6); a sealing strip (17) is provided between the contact edge of the cover plate (6) and the collection box (3).

5. The drill bit maintenance device for coal mining according to claim 1, characterized in that, The air pump (4) is connected to the collection box (3) through a second pipe (5), and a second filter (21) is provided in the second pipe (5).

6. The drill bit maintenance device for coal mining according to claim 5, characterized in that, The second pipe (5) is provided with a support frame (18), and a circular groove (19) is provided on the support frame (18); the second filter screen (21) is provided with a plug rod (20), which is inserted into the circular groove (19), and the second filter screen (21) and the support frame (18) are fixed by magnetic attraction.

7. The drill bit maintenance device for coal mining according to claim 6, characterized in that, The second filter screen (21) is provided with a pull ring (22) for easy removal and separation by the user.

8. The drill bit maintenance device for coal mining according to claim 1, characterized in that, The motor (8) is an explosion-proof motor, and the air pump (4) is an explosion-proof air pump.

Images