Portable small drilling dust and spray sealing device

Abstract

This invention relates to the technical field of coal seam drilling equipment, and discloses a portable, small-scale drilling dustproof and blowout-proof sealing device, including a drill mouth seal with a flange fixedly connected to its outer wall. The drill mouth seal extends into the borehole and is fixedly connected to the drilling wall via the flange. A sealing assembly includes a drill rod seal and a sealing element. The drill rod seal is detachably connected to the drill mouth seal, and the sealing element is disposed within the drill rod seal. The drill rod passes through the drill rod seal and is connected to the sealing element. A dustproof element is disposed on the drill mouth seal and is connected to an external water source to spray and reduce dust inside the borehole. At least two slag discharge ports are respectively opened on both sides of the drill rod seal, and the slag discharge ports are connected to the interior of the drill rod seal. This invention is portable, easy to install, not limited by terrain, ensures sealing effect, and can efficiently prevent outbursts, reduce dust, and remove slag during coal seam drilling.

Description

Technical Field

[0001] This invention relates to the field of coal seam drilling equipment technology, and in particular to a portable, small-sized drilling dustproof and blowout-proof sealing device. Background Technology

[0002] Coal seam geology is complex, and the gas content is high, necessitating gas drainage before mining. Gas drainage involves drilling at designated locations within the coal seam to create drainage channels for the gas. Air-assisted slag removal is currently the primary method in coal mine drilling. High-pressure airflow is delivered from the drill pipe's inner bore to the drill bit's working face. This airflow impacts and carries away coal slag and rock cuttings generated during drilling, then discharges them out of the borehole along the annular space between the drill pipe and the borehole wall. This achieves the effect of simultaneously drilling and removing rock cuttings from the borehole. However, drilling generates a large amount of coal dust and gravel, and may also cause blowouts, which not only pollute the roadway but also negatively impact visibility.

[0003] To address this, a larger diameter drill bit is needed to enlarge the borehole opening before drilling begins, in order to install a borehole sealing device. This device sprays water at the borehole opening to suppress dust and debris, which is then discharged through a drain. However, current dust and blowout prevention devices used in drilling are heavy and difficult to assemble. In narrow tunnels or during advanced geological drilling, these devices suffer from drawbacks such as high labor intensity, low construction efficiency, and large equipment footprint.

[0004] Therefore, there is an urgent need for a portable, small-sized drilling dustproof and blowout-proof sealing device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a portable, small-sized drilling dustproof and blowout-proof sealing device to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a portable, small-sized drilling dustproof and blowout-proof sealing device, comprising:

[0007] A drill hole sealer has a flange fixedly connected to its outer wall. The drill hole sealer extends into the drill hole and is fixedly connected to the drilling wall through the flange.

[0008] A sealing assembly includes a drill pipe sealer and a sealing element, wherein the drill pipe sealer is detachably connected to the drill hole sealer, the sealing element is disposed within the drill pipe sealer, and the drill pipe passes through the drill pipe sealer and is connected to the sealing element.

[0009] A dustproof component is installed on the drill hole sealer, and the dustproof component is connected to an external water source to spray and reduce dust inside the drill hole.

[0010] At least two slag discharge ports are respectively opened on both sides of the drill pipe sealer, and the slag discharge ports are connected to the inside of the drill pipe sealer.

[0011] According to the present invention, a portable small drilling dustproof and blowout-proof sealing device is provided, wherein the sealing element includes a sliding track formed in the drill rod sealer, and a first drill rod caliper and a second drill rod caliper are slidably connected on the sliding track, and the drill rod is located in the first drill rod caliper and the second drill rod caliper.

[0012] According to the present invention, a portable small drilling dustproof and blowout-proof sealing device is provided, wherein the front end of the drill rod sealer is a frustum-shaped structure, and the sliding track is located inside the frustum-shaped structure.

[0013] According to the present invention, a portable small drilling dustproof and blowout-proof sealing device is provided, wherein a plurality of ball bearings are provided in the sliding track, and the first drill rod caliper and the second drill rod caliper are respectively in contact with the ball bearings.

[0014] According to the present invention, a portable small drilling dustproof and anti-spray sealing device is provided, wherein the dustproof component includes at least two water supply pipes, the two water supply pipes are respectively opened at both ends of the cylinder wall of the drill hole sealer, and a spraying device is fixedly connected inside the drill hole sealer, and the water supply pipes are connected to the spraying device.

[0015] According to the present invention, a portable small drilling dustproof and blowout-proof sealing device is provided, wherein the inner diameters of the first drill rod caliper and the second drill rod caliper are the same, and the outer diameter of the first drill rod caliper is smaller than the outer diameter of the second drill rod caliper.

[0016] According to the present invention, a portable small drilling dustproof and blowout-proof sealing device is provided, wherein the second drill rod caliper is provided with a plurality of ventilation holes.

[0017] According to the present invention, a portable small drilling dustproof and blowout-proof sealing device is provided, wherein rubber pads are fixedly connected to the inner sidewalls of the first drill rod caliper and the second drill rod caliper, and the outer wall of the drill rod is in contact with the rubber pads.

[0018] According to the present invention, a portable small drilling dustproof and blowout-proof sealing device is provided, wherein a slag discharge pipe is fixedly connected to the slag discharge port.

[0019] According to the present invention, a portable small drilling dustproof and blowout-proof sealing device is provided, wherein at least two sealing air-inflatable rubber rings are fixedly connected to the outer wall of the drill hole sealer, and an air-inflatable pipe is provided on the flange, the air-inflatable pipe being connected to the sealing air-inflatable rubber rings.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] This invention provides a portable, small-scale drilling dustproof and blowout-proof sealing device. In use, the drill bit seal is installed inside the borehole via a flange. The drill rod passes through the seal and extends into the borehole for drilling operations. During drilling, the seal is achieved through the seal, and dust is reduced through a dustproof component. Internal dust and other contaminants are discharged and collected through the slag discharge port. This invention is easy to carry; when used for field geological coring or underground coal mine drilling, only one person is needed to carry the entire device. Installation is simple, not limited by terrain, and ensures a reliable seal. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the drilling state of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the overall structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the first drill pipe clamp structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the second drill pipe clamp structure of the present invention;

[0028] Figure 6 This is a schematic diagram showing the connection state between the first drill pipe caliper and the sliding track of the present invention;

[0029] The components include: 1. Drill hole seal; 2. Flange; 3. Drilling wall surface; 4. Drill rod seal; 5. Drill rod; 6. Slag discharge port; 7. Sliding rail; 8. First drill rod caliper; 9. Second drill rod caliper; 10. Rubber pad; 11. Ball bearing; 12. Water supply pipe; 13. Spraying device; 14. Ventilation hole; 15. Slag discharge pipe; and 16. Sealing inflatable rubber ring. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Reference Figures 1-6 This invention provides a portable, small-sized drilling dustproof and blowout-proof sealing device, comprising:

[0033] The drill hole seal 1 has a flange 2 fixedly connected to its outer wall. The drill hole seal 1 extends into the drill hole and is fixedly connected to the drilling wall 3 through the flange 2.

[0034] The sealing assembly includes a drill pipe sealer 4 and a sealing element. The drill pipe sealer 4 is detachably connected to the drill mouth sealer 1. The sealing element is disposed inside the drill pipe sealer 4. The drill pipe 5 passes through the drill pipe sealer 4 and is connected to the sealing element.

[0035] The dustproof component is installed on the drill hole sealer 1. The dustproof component is connected to an external water source to spray and reduce dust inside the drill hole.

[0036] At least two slag discharge ports 6 are respectively opened on both sides of the drill pipe sealer 4, and the slag discharge ports 6 are connected to the inside of the drill pipe sealer 4.

[0037] In one embodiment of the present invention, during use, the drill hole sealer 1 is installed in the drill hole through the flange 2, and the drill rod 5 is inserted into the drill hole through the seal 4 and through the seal to perform drilling operations. During drilling, the seal is achieved by the seal and the dust is reduced by the dustproof component. The dust inside is discharged and collected through the slag discharge port 6.

[0038] As an optional implementation, the seal includes a sliding track 7 formed within the drill pipe sealer 4, on which a first drill pipe caliper 8 and a second drill pipe caliper 9 are slidably connected, and the drill pipe 5 is located within the first drill pipe caliper 8 and the second drill pipe caliper 9.

[0039] In one embodiment of the present invention, by sliding the first drill pipe cleaver 8 and the second drill pipe cleaver 9 on the sliding track 7, the drill pipe 5 can be adapted to swing and feed movements within a certain range, while always maintaining the wrapping and sealing of the drill pipe 5.

[0040] As an optional implementation, the front end of the drill pipe sealer 4 is a frustum-shaped structure, and the sliding track 7 is located inside the frustum-shaped structure.

[0041] In one embodiment of the present invention, the frustum-shaped structure forms a guiding and retracting space, which can better guide the drill rod 5 to contact the caliper. At the same time, the tightening and loosening of the drill rod 5 by the first drill rod caliper 8 and the second drill rod caliper 9 is in a front-to-back sequence, which will not cause air to escape from the head of the drill rod sealer 4.

[0042] As an optional implementation, a plurality of balls 11 are provided in the sliding track 7, and the first drill pipe caliper 8 and the second drill pipe caliper 9 are respectively in contact with the balls 11.

[0043] In one embodiment of the present invention, the sliding friction between the caliper and the rail is transformed into rolling friction, which significantly reduces the frictional force.

[0044] As an optional implementation, the dustproof component includes at least two water supply pipes 12, which are respectively opened at both ends of the cylinder wall of the drill hole sealer 1. A spraying device 13 is fixedly connected inside the drill hole sealer 1, and the water supply pipes 12 are connected to the spraying device 13.

[0045] In one embodiment of the present invention, the multi-channel water supply pipe 12 ensures the reliability of water supply, and the built-in spraying device 13, such as an annular spray pipe or nozzle, can atomize water and spray it evenly inside the borehole and around the drill rod 5 to form a water curtain, thereby efficiently wetting, agglomerating and settling the dust generated by the borehole, inhibiting the spread of dust from the source, and making the dust reduction effect more thorough.

[0046] As an optional implementation, the first drill pipe caliper 8 and the second drill pipe caliper 9 have the same inner diameter, and the outer diameter of the first drill pipe caliper 8 is smaller than the outer diameter of the second drill pipe caliper 9.

[0047] In one embodiment of the present invention, during use, rotary drilling is performed, and airflow is output to the drill bit through the hollow interior of the drill rod 5. When the drill rod 5 enters from the head of the drill rod seal 4, it comes into contact with drill rod calipers of different sizes and shapes. The rotation of the drill rod 5 causes the two drill rod calipers to rotate along the sliding track 7. As the diameter of the sliding track 7 increases, the first drill rod caliper 8 gradually releases the drill rod 5. The airflow from the drill bit blows onto the first drill rod caliper 8 after the drill rod is released. Due to the influence of the airflow, the first drill rod caliper 8 slides along the sliding track 7 to the drill bit. The head of the drill rod sealer 4 re-locks the drill rod 5. At this time, the second drill rod cleaver 9 also gradually loosens the drill rod 5 due to the increase in the diameter of the sliding track 7. Under the influence of wind, the second drill rod cleaver 9 will be blown to the middle of the drill rod sealer 4 and re-lock the drill rod 5. The tightening and loosening of the drill rod 5 by the first drill rod cleaver 8 and the second drill rod cleaver 9 is in a front-to-back sequence, which will not cause the wind to escape from the head of the drill rod sealer 4. During the drilling process, the slag and dust blown out of the drill rod 5 by the wind are discharged through the inside of the drill mouth sealer 1. After being dusted by the spraying device 13, they are discharged from the slag discharge port 6.

[0048] As an optional implementation, the second drill pipe caliper 9 is provided with several ventilation holes 14.

[0049] In one embodiment of the present invention, the airflow from the drill bit passes through the ventilation hole 14 and is blown to the first drill rod caliper 8.

[0050] As an optional implementation, rubber pads 10 are fixedly connected to the inner walls of both the first drill pipe caliper 8 and the second drill pipe caliper 9, and the outer wall of the drill pipe 5 contacts the rubber pads 10.

[0051] In one embodiment of the present invention, the rubber pad 10 provides flexible contact with the drill rod surface, which can fill the tiny gaps in the unevenness of the drill rod surface and achieve a tighter seal.

[0052] As an optional implementation, a slag discharge pipe 15 is fixedly connected to the slag discharge port 6.

[0053] In one embodiment of the present invention, the slag discharge pipe 15 can guide the drill cuttings and dust carried by the water flow in a directional and orderly manner to a designated collection container or sewage discharge point, thereby avoiding the random discharge of waste and polluting the working environment, and realizing civilized construction and centralized treatment of waste.

[0054] As an optional implementation, at least two sealing air-filled rubber rings 16 are fixedly connected to the outer wall of the drill hole sealer 1, and an air-filled pipe is provided on the flange 2, which is connected to the sealing air-filled rubber rings 16.

[0055] In one embodiment of the present invention, air is injected into the sealing rubber ring 16 through an air injection pipe, causing it to expand and fit tightly against the borehole wall, thereby achieving a reliable static seal between the drill seal 1 and the borehole. This sealing method is highly adaptable and can cope with borehole walls of different diameters and roughnesses, effectively preventing dust and sewage from leaking from the joint between the device and the borehole.

[0056] This invention provides a portable, small-scale drilling dustproof and blowout-proof sealing device. When the device is placed inside the drill hole, the four screws on the flange 2 are driven into the drilling wall 3 to secure it. The device is then connected to an external air pump via an inflation pipe on the flange 2, ensuring the inflated sealing rubber ring 16 fits tightly against the drill hole wall to prevent gas ejection and coal dust leakage. The water supply pipe 12 is connected to an external water pump. If water flows from the head of the drill rod sealer 4 when the pump is turned on, it indicates that the spraying device 13 is functioning normally. Before connecting the drill hole sealer 1 and the drill rod sealer 4 via threads, check if the rubber pad 10 on the drill rod caliper is damaged. If undamaged, the drill rod caliper can be inserted into the slide rail 7 through the slot. The second drill rod caliper 9 is inserted from the tail of the drill rod sealer 4, and the first drill rod caliper 8 is inserted from the head. After connecting the slag discharge port 6 of the drill pipe sealer 4 to the slag discharge pipe 15, the drill pipe sealer 4 is then connected to the drill bit sealer 1 via threads. The drill pipe 5 enters from the head of the drill pipe sealer 4, and the tail of the drill pipe sealer 4 extends out. During drilling, it will rotate and drill, and the air volume will be output to the drill bit for pneumatic slag discharge through the hollow interior of the drill pipe 5. When the drill pipe 5 enters from the head of the drill pipe sealer 4, it will contact the rubber pad 10. The rotation of the drill pipe 5 will drive the drill pipe caliper to rotate along the sliding rail 7. As the diameter of the sliding rail 7 increases, the first drill pipe caliper 8 gradually loosens the drill pipe 5. The air volume of the drill bit will flow out through the ventilation hole 14 on the second drill pipe caliper 9 and blow onto the first drill pipe caliper 8 after the drill pipe 5 has been loosened. Due to the influence of the air force, the first drill pipe caliper 8 slides through the sliding rail 7 to the head of the drill pipe sealer 4 and re-clamps the drill pipe 5. At this point, the second drill pipe chuck 9 gradually loosens the drill pipe 5 due to the increased diameter of the sliding track 7; under the influence of wind, the second drill pipe chuck 9 will be blown to the middle of the drill pipe seal 4 and re-clamp the drill pipe 5. The tightening and loosening of the drill pipe 5 by the first drill pipe chuck 8 and the second drill pipe chuck 9 is sequential, preventing air from escaping from the head of the drill pipe seal 4. During drilling, the slag and dust blown out of the drill pipe 5 by the wind will be discharged through the inside of the drill hole seal 1 only because the hole is filled by the sealing inflatable rubber ring 16. After being dusted by the spraying device 13, it will be discharged through the slag discharge port 6 and the slag discharge pipe 15.

[0057] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0058] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A portable, compact dust and spray seal for drilling, characterized by, include: The drill hole seal (1) has a flange (2) fixedly connected to its outer wall. The drill hole seal (1) extends into the drill hole and is fixedly connected to the drilling wall (3) through the flange (2). The sealing assembly includes a drill pipe seal (4) and a seal, wherein the drill pipe seal (4) is detachably connected to the drill hole seal (1), the seal is disposed inside the drill pipe seal (4), and the drill pipe (5) passes through the drill pipe seal (4) and is connected to the seal. A dustproof component is installed on the drill hole seal (1), and the dustproof component is connected to an external water source to spray and reduce dust inside the drill hole; At least two slag discharge ports (6) are respectively opened on both sides of the drill pipe sealer (4), and the slag discharge ports (6) are connected to the inside of the drill pipe sealer (4); the sealing element includes a sliding track (7) opened in the drill pipe sealer (4), and a first drill pipe caliper (8) and a second drill pipe caliper (9) are slidably connected on the sliding track (7), and the drill pipe (5) is located in the first drill pipe caliper (8) and the second drill pipe caliper (9); the front end of the drill pipe sealer (4) is a frustum-shaped structure, and the sliding track (7) is located in the frustum-shaped structure; the inner diameters of the first drill pipe caliper (8) and the second drill pipe caliper (9) are the same, and the outer diameter of the first drill pipe caliper (8) is smaller than the outer diameter of the second drill pipe caliper (9); the tightening and loosening of the drill pipe (5) by the first drill pipe caliper (8) and the second drill pipe caliper (9) is in a front-to-back order.

2. A portable, compact dust and spray seal for drilling according to claim 1, wherein: The sliding track (7) is provided with a number of balls (11), and the first drill pipe caliper (8) and the second drill pipe caliper (9) are respectively in contact with the balls (11).

3. A portable and compact dust and spray seal for drilling according to claim 1, characterized in that: The dustproof component includes at least two water supply pipes (12), which are respectively opened at both ends of the cylinder wall of the drill seal (1). A spraying device (13) is fixedly connected inside the drill seal (1), and the water supply pipes (12) are connected to the spraying device (13).

4. A portable and compact dust and spray seal for drilling according to claim 1, characterized in that: The second drill pipe caliper (9) has several ventilation holes (14).

5. A portable and compact dust and spray seal for drilling according to claim 1, characterized in that: Rubber pads (10) are fixedly connected to the inner sidewalls of the first drill pipe caliper (8) and the second drill pipe caliper (9), and the outer wall of the drill pipe (5) is in contact with the rubber pads (10).

6. A portable, compact dust and spray seal for drilling according to claim 1, wherein: A slag discharge pipe (15) is fixedly connected to the slag discharge port (6).

7. A portable and compact dust and kickback containment seal for use with a drill according to claim 1, wherein: At least two sealing air-filled rubber rings (16) are fixedly connected to the outer wall of the drill hole seal (1), and an air-filled pipe is provided on the flange (2), which is connected to the sealing air-filled rubber rings (16).

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