Down-the-hole drill dust collecting cover capable of conveniently discharging slag

Abstract

The utility model discloses a down-the-hole drill dust collecting cover capable of conveniently discharging slag, belongs to the technical field of mine down-the-hole drill equipment, and is used for conveniently discharging slag of a down-the-hole drill. According to the technical scheme, a dust catching cover is fixed to a lower support of a drill rod, a nylon enclosure cover is connected to the periphery of the dust catching cover, a flow guide plate is located in the dust catching cover and is a circular ring, the circular ring of the flow guide plate is arranged outside an impactor on the lower portion of the drill rod in a sleeving mode, and the section of the circular ring of the flow guide plate is in an inverted V shape. A gap allowing mineral powder to pass through is formed between the annular inner hole edge of the guide plate and the periphery of the impactor, the annular peripheral edge of the guide plate is located at the joint of the lower end of the dust collecting cover and the nylon enclosure cover, the rib plates are evenly distributed around the circumference of the upper plate face of the guide plate, and the upper plate face of the guide plate is fixedly connected with the inner wall of the dust collecting cover through the rib plates. The slag removal device is simple in structure, convenient to use, small in investment and convenient to maintain, solves the problems that mineral powder is accumulated at a drilling opening, slag needs to be removed regularly manually, and time and labor are wasted, improves the working efficiency of equipment, prolongs the service life and saves cost.

Description

Technical Field

[0001] The utility model relates to a dust collecting cover for a down-the-hole drill which can facilitate slag discharge and belongs to the technical field of mine down-the-hole drill equipment. Background Art

[0002] Down-the-hole drills are essential equipment for drilling operations in mines. During production, dust collection and removal are essential. The KQ200D down-the-hole drill utilizes wet dust removal equipment. Existing dust hoods are simple in design and can only suppress and collect rock dust. Pump failure or reduced water pressure can generate large amounts of dust, causing dust pollution and potentially leading to environmental risks. Furthermore, during extended drilling operations, large amounts of rock dust accumulate around the borehole opening, requiring regular manual cleaning. If this is not done promptly or thoroughly, or if there is rain, the accumulated rock dust can re-enter the borehole, causing a shallower hole depth and compromising blasting quality. This can necessitate secondary drilling, which is time-consuming and labor-intensive. Furthermore, rock dust easily freezes in winter, shrinking or blocking the borehole opening, making charging difficult or even impossible. To address these issues, nylon shrouds are often installed around the dust hood to seal the borehole and prevent dust. The hood is tightly sealed, making it difficult to carry out slag removal. Therefore, the nylon hood must be removed for slag removal and then restored after slag removal is complete, which is time-consuming and labor-intensive. Therefore, it is urgent to modify the dust hood to resolve the conflict between dust prevention and slag removal. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a dust collecting hood that can facilitate slag discharge. The dust collecting hood can control the dust generated during the drilling process of the drilling rig, and at the same time can discharge the mineral powder accumulated around the drill hole. There is no need for manual regular cleaning and slag removal, which saves time and effort and improves the efficiency of dust removal and slag discharge.

[0004] The technical solution to the above technical problems is:

[0005] The utility model relates to a dust collecting hood which can facilitate slag discharge. The dust collecting hood comprises a dust collecting hood and a nylon shroud. The dust collecting hood is fixed on a support below a drill rod. The nylon shroud is connected to the outer periphery of the dust collecting hood. The dust collecting hood also comprises a guide plate and a rib plate. The guide plate is located inside the dust collecting hood. The guide plate is a circular ring. The guide plate circular ring is sleeved on the outside of an impactor at the lower part of the drill rod. The cross section of the circular ring of the guide plate is an inverted V shape. There is a gap between the edge of the inner hole of the circular ring of the guide plate and the outer periphery of the impactor for mineral powder to pass through. The outer peripheral edge of the circular ring of the guide plate is located at the connection between the lower end of the dust collecting hood and the nylon shroud. A plurality of rib plates are evenly distributed around the circumference of the upper plate surface of the guide plate. The upper plate surface of the guide plate is fixedly connected to the inner wall of the dust collecting hood through the rib plate.

[0006] The above-mentioned dust collecting cover can facilitate slag discharge, and the drill rod lower support is additionally provided with a drill rod sealing sleeve, which is annular and fixed in the gap between the drill rod circumference and the outer wall of the drill rod lower support, and the drill rod sealing sleeve is in sliding fit with the outer wall of the drill rod.

[0007] The above-mentioned dust collecting cover can facilitate slag discharge, and the drill rod lower support is additionally provided with an impactor sealing sleeve, the impactor sealing sleeve has a T-shaped cross-section, the circumferential rear part of the impactor sealing sleeve is fixedly connected to the drill rod lower support, and the circumferential front part of the impactor sealing sleeve is fixed in the gap between the circumference of the impactor and the outer wall of the drill rod lower support, and the impactor sealing sleeve is in a sliding fit with the outer wall of the impactor.

[0008] The above-mentioned dust hood can facilitate slag discharge. The dust hood is a cylindrical body with an opening at the lower end. The dust hood is made of iron plate. The nylon cover is made of funnel-shaped nylon material. Multiple magnet blocks are evenly installed on the circumference of the upper inner hole of the nylon cover. The magnet blocks on the circumference of the upper inner hole of the nylon cover are adsorbed and connected to the circumferential edge of the iron plate at the lower end of the dust hood.

[0009] The beneficial effects of the utility model are:

[0010] The utility model provides a guide plate in the dust collecting hood, and the mineral powder can be transferred from the impactor and the drill rod to the circumferential edge of the dust collecting hood along the guide plate, and then discharged from the circumference of the nylon cover, so that most of the rock powder is evenly discharged to a position far away from the drill hole opening, thereby avoiding the accumulation of mineral powder at the drill hole opening; the drill rod lower support is additionally provided with a drill rod sealing sleeve and an impactor sealing sleeve, which can seal the gaps between the drill rod, the impactor and the drill rod lower support around, thereby avoiding dust leakage of the mineral powder.

[0011] The utility model has the advantages of simple structure, easy use, small investment and convenient maintenance, which solves the problem of mineral powder accumulation at the drilling mouth, which requires manual regular slag removal and is time-consuming and labor-intensive, improves the working efficiency of the equipment, extends the service life of spare parts and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the use state of the utility model.

[0014] The markings in the figure are as follows: drill rod 1, impactor 2, drill bit 3, drill rod lower support 4, dust cover 5, nylon cover 6, guide plate 7, rib plate 8, drill rod sealing sleeve 9, impactor sealing sleeve 10, mineral powder 11. DETAILED DESCRIPTION

[0015] The utility model is composed of a dust collecting cover 5, a nylon surrounding cover 6, a guide plate 7, a rib plate 8, a drill pipe sealing sleeve 9, and an impactor sealing sleeve 10.

[0016] As shown in the figure, the dust hood 5 is a cylindrical body with an opening at the lower end. The dust hood 5 is made of iron plate and is fixed to the lower support 4 of the drill rod. The nylon cover 6 is connected to the outer periphery of the dust hood 5. The nylon cover 6 is made of funnel-shaped nylon material. A plurality of magnet blocks are evenly distributed around the circumference of the upper inner hole of the nylon cover 6. The magnet blocks around the upper inner hole of the nylon cover 6 are adsorbed and connected to the circumferential edge of the iron plate at the lower end of the dust hood 5. The dust hood 5 and the nylon cover 6 are used to seal the surroundings of the drill hole to prevent dust. The dust hood 5 and the nylon cover 6 are adsorbed and connected by magnet blocks, so the nylon cover 6 can be quickly disassembled and installed, overcoming the disadvantages of time-consuming and labor-intensive disassembly in the prior art.

[0017] The figure shows a deflector plate 7 installed inside the dust hood 5. The deflector plate 7 is a circular ring that fits over the outside of the impactor 2 at the bottom of the drill pipe 1. The cross-section of the deflector plate 7 is an inverted V-shaped ring. There is a gap between the inner edge of the deflector plate 7 and the outer periphery of the impactor 3 for mineral powder 11 to pass through. The outer edge of the deflector plate 7 is located at the connection between the lower end of the dust hood 5 and the nylon cover 6. Multiple ribs 8 are evenly distributed around the circumference of the upper plate surface of the deflector plate 7. The upper plate surface of the deflector plate 7 is fixedly connected to the inner wall of the dust hood 5 through the ribs 8.

[0018] After adding the guide plate 7, most of the mineral powder 11 can be transferred from the top of the guide plate 7 to the circumferential edge of the dust hood 5 along the gap between the edge of the inner hole of the guide plate 7 and the impactor 2, and a small part of the mineral powder 11 can flow along the lower surface of the guide plate 7 to the circumferential edge of the dust hood 5. The mineral powder 11 reaching the edge of the dust hood 5 is then discharged from the circumference of the nylon cover 6, so that most of the rock powder is evenly discharged to a position far away from the drill hole, avoiding the effect of the mineral powder 11 accumulating at the drill hole.

[0019] The figure shows that the present invention adds a drill pipe sealing sleeve 9. Drill pipe sealing sleeve 9 is annular and fixed in the gap between the circumference of the drill pipe 1 and the outer wall of the drill pipe lower support 4. Drill pipe sealing sleeve 9 and the outer wall of the drill pipe 1 are in a sliding fit. Drill pipe sealing sleeve 9 can close the gap between the drill pipe 1 and the drill pipe lower support 4, preventing dust leakage of mineral powder 11.

[0020] The figure shows that the present invention also adds a hammer seal 10. The hammer seal 10 has a T-shaped cross-section. The rear portion of the hammer seal 10 is fixedly connected to the drill rod lower support 4. The front portion of the hammer seal 10 is fixed to the gap between the hammer 2 and the outer wall of the drill rod lower support 4. The hammer seal 10 and the outer wall of the hammer 2 are in a sliding fit. The hammer seal 10 can close the gap between the hammer 2 and the drill rod lower support 4, preventing dust leakage from the mineral powder 11.

[0021] The utility model adds components such as a guide plate 7, a rib plate 8, a drill pipe sealing sleeve 9, and an impactor sealing sleeve 10 on the basis of the original dust collecting hood 5 and the nylon enclosure 6, thereby improving the problems of the original dust collecting hood 5 having a simple structure and loose sealing. The mineral powder 11 generated during the punching operation flows along the opening direction of the guide plate 7 under the impact of the high-pressure airflow, and most of the mineral powder 11 is evenly discharged to a position far away from the drill hole, thereby realizing the slag discharge operation. This not only solves the problem of the mineral powder 11 accumulating at the hole mouth, requiring manual regular slag removal, and wasting time and effort, but also improves the working efficiency of the equipment, shortens the punching time, extends the service life of spare parts, and saves costs.

[0022] An embodiment of the present invention is as follows:

[0023] The dust collecting cover 5 is a cylindrical body with an open lower end, made of iron plate, with a diameter of 1000mm, a height of 100mm and a thickness of 6mm;

[0024] The nylon cover 6 is funnel-shaped and made of rubberized nylon material, with an inner hole diameter of and an outer diameter of;

[0025] The guide plate 7 is a circular ring with an inverted V-shaped cross section, which is rolled from a 6mm thick iron plate. The inner diameter of the ring is 220mm, the outer diameter of the ring is 1000mm, the diameter of the highest position in the middle is 500mm, and the width of the guide plate discharge port is 100mm.

[0026] The rib plate 8 is a steel plate with a length of 500 mm, a width of 400 mm and a thickness of 6 mm;

[0027] The drill pipe sealing sleeve 9 is a circular iron plate with an inner diameter of 161mm, an outer diameter of 300mm and a thickness of 20mm.

[0028] The impactor sealing sleeve 10 has a T-shaped cross section, an inner diameter of 202 mm, an outer diameter of 300 mm, and a height of 100 mm.

Claims

1. A dust collecting cover for a down-the-hole drill rig capable of conveniently discharging slag, comprising a dust collecting cover (5) and a nylon shroud (6), wherein the dust collecting cover (5) is fixed on a lower support (4) of a drill pipe, and the nylon shroud (6) is connected to the outer periphery of the dust collecting cover (5), and is characterized in that: It also has a guide plate (7) and a rib plate (8). The guide plate (7) is located inside the dust hood (5). The guide plate (7) is a circular ring. The guide plate (7) circular ring is sleeved on the outside of the impactor (2) at the lower part of the drill rod (1). The cross section of the circular ring of the guide plate (7) is an inverted V shape. There is a gap between the edge of the circular ring inner hole of the guide plate (7) and the outer periphery of the impactor (2) for mineral powder (11) to pass through. The outer peripheral edge of the circular ring of the guide plate (7) is located at the connection between the lower end of the dust hood (5) and the nylon cover (6). A plurality of rib plates (8) are evenly distributed around the circumference of the upper plate surface of the guide plate (7). The upper plate surface of the guide plate (7) is fixedly connected to the inner wall of the dust hood (5) through the rib plates (8).

2. The dust collecting cover for down-the-hole drilling rig capable of convenient slag discharge according to claim 1 is characterized in that: The drill rod lower support (4) is additionally provided with a drill rod sealing sleeve (9), which is in the shape of a circular ring and is fixed in the gap between the circumference of the drill rod (1) and the outer wall of the drill rod lower support (4). The drill rod sealing sleeve (9) and the outer wall of the drill rod (1) are in sliding fit.

3. The dust collecting cover of the down-the-hole drill capable of convenient slag discharge according to claim 1 is characterized in that: The drill rod lower support (4) is additionally provided with an impactor sealing sleeve (10), the impactor sealing sleeve (10) having a T-shaped cross section, the circumferential rear portion of the impactor sealing sleeve (10) being fixedly connected to the drill rod lower support (4), and the circumferential front portion of the impactor sealing sleeve (10) being fixed to the gap between the circumference of the impactor (2) and the outer wall of the drill rod lower support (4), and the impactor sealing sleeve (10) and the outer wall of the impactor (2) being in sliding fit.

4. The dust collecting cover for down-the-hole drilling rig capable of convenient slag discharge according to claim 1 is characterized in that: The dust collecting cover (5) is a cylindrical body with an opening at the lower end. The dust collecting cover (5) is made of an iron plate. The nylon enclosure (6) is made of a funnel-shaped nylon material. A plurality of magnet blocks are evenly distributed around the circumference of the upper inner hole of the nylon enclosure (6). The magnet blocks around the circumference of the upper inner hole of the nylon enclosure (6) are adsorbed and connected to the circumferential edge of the iron plate at the lower end of the dust collecting cover (5).

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