Dust collecting device of drilling machine

Abstract

The utility model relates to a dust catching device of a drilling machine, which comprises a dust catching cylinder and a dust catching cover, a plurality of shunt pipes are arranged on the dust catching cylinder, and the shunt pipes are used for enabling dust flowing out of the shunt pipes to be opposite to dust vertically escaping upwards in the dust catching cylinder; an air suction pipe is further arranged on the dust catching cylinder, and the air suction pipe is used for sucking dust after hedging and / or dust escaping vertically and upwards; the dust catching cover is positioned below the dust catching cylinder and is connected with the dust catching cylinder; the dust collecting cover is used for being tightly attached to a drilling opening. The shunting pipe is arranged on the dust catching barrel, the flowing direction of dust is changed, the dust with the changed direction and dust flowing vertically upwards in the barrel are subjected to hedging and mixing, and energy is dissipated, so that the speed reduction effect is achieved, the vertically upward escaping and spraying speed of the dust is greatly reduced, the dust staying time is relatively prolonged, and the dust catching effect is improved. Therefore, the air can be sucked away from the air suction port by the fan more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial and mining machinery, in particular to a dust collecting device for a drilling rig. Background Art

[0002] During drilling operations, a drilling rig must continuously remove crushed slag and rock debris from the hole using high-pressure airflow. Dust can seriously impact worker health, and long-term exposure to dust can lead to respiratory problems and other health issues. Dust collection devices protect workers' health by collecting and purifying dust, reducing the risk of inhalation of harmful dust. Dust can affect the proper operation of drilling rigs, clog equipment components, and reduce efficiency. Dust collection devices can promptly remove dust from the drill hole, reducing equipment failures and improving the efficiency and stability of the drilling rig.

[0003] Authorization announcement number: CN218787105U, application date: 2022.11.11, the utility model name is a down-the-hole drill dust collection device, including a dust collection hood assembly, the dust collection hood assembly includes a sealing platform, a dust collection bucket, a pressure plate, a seal and a guide ring, the seal is stacked between the sealing platform and the pressure plate, one end of the dust collection bucket is fixedly connected to the sealing platform, and the guide ring is arranged on the inner side of the dust collection bucket and is located at one end of the dust collection bucket close to the sealing platform. In the down-the-hole drill dust collection device of the utility model, by arranging a guide ring in the dust collection bucket, the guide ring can be used to straighten the impactor when it is eccentrically drilled, thereby avoiding shearing of the seal, extending the practical life of the seal, and improving the reliability of the down-the-hole drill dust collection device.

[0004] Existing technology uses a dust collector at the hole mouth to direct the dust-laden airflow backwashed from the hole into the drilling rig's dust removal system for purification. However, due to the high speed of the airflow backwashed from the hole, some of the dust cannot be quickly absorbed by the dust removal system and is instead ejected directly from the gap between the drill rod and the drill support mechanism above the dust collector, causing dust to fly everywhere and pollute the environment. Utility Model Content

[0005] Aiming at the defects that the dust collecting device in the prior art cannot suck away the dust airflow in time, causing environmental pollution, etc., the purpose of the utility model is to provide a dust collecting device for a drilling rig.

[0006] The technical solution provided by this utility model is:

[0007] A drilling rig dust collecting device, comprising:

[0008] A dust collecting cylinder is provided with a plurality of diversion pipes for offsetting the dust flowing out of the diversion pipes with the dust escaping vertically upward from the dust collecting cylinder; the dust collecting cylinder is also provided with an air intake pipe for sucking in the offset dust and / or the dust escaping vertically upward from the dust collecting cylinder;

[0009] The dust hood is located below the dust cylinder and is connected to the dust cylinder; the dust hood is used to be close to the drilling hole.

[0010] Furthermore, an air inlet and an air outlet are provided on the wall of the dust collecting cylinder, and the air outlet is located above the air inlet;

[0011] The shunt pipe includes an air outlet pipe, an air inlet pipe, and a connecting pipe for connecting the air outlet pipe and the air inlet pipe;

[0012] The air outlet pipe is connected to the air outlet, and the air inlet pipe is connected to the air inlet.

[0013] Furthermore, an air intake port for connecting to an air intake pipe is provided on the wall of the dust collecting cylinder, and the center of the air intake port and the center of the air outlet are substantially located in the same horizontal plane.

[0014] Furthermore, the air outlet pipe and the air inlet pipe are both straight pipes, and the connecting pipe is a curved pipe.

[0015] Furthermore, relative to the airflow direction, the air inlet pipe is arranged obliquely upward, and the air outlet pipe is arranged obliquely downward.

[0016] Furthermore, the angle formed by the air inlet pipe and the central axis of the dust collecting cylinder is in the range of 30° to 50°, and the angle formed by the air outlet pipe and the central axis of the dust collecting cylinder is not greater than the angle formed by the air outlet pipe and the central axis of the dust collecting cylinder.

[0017] Furthermore, the dust collecting cylinder includes a cylinder body and a connecting plate fixedly connected to the top of the cylinder body, and a through hole having the same inner diameter as the cylinder body is opened in the middle of the connecting plate;

[0018] The connecting plate is used to be detachably connected to the pressure plate on the drill supporting mechanism, and the pressure plate is located above the connecting plate; a gasket is provided between the connecting plate and the pressure plate, and the gasket is used to reduce dust escape.

[0019] Furthermore, an opening is provided in the middle of the gasket, and the diameter of the opening is smaller than the inner diameter of the cylinder body and slightly larger than the diameter of the drilled hole.

[0020] Furthermore, the dust collecting cover is detachably connected to the dust collecting cylinder, and the dust collecting cover includes a first opening and a second opening that are arranged opposite to each other;

[0021] The first opening is used for sealing connection with the lower side of the cylinder body, and the second opening is used for being close to the drilling hole; the first opening and the second opening are hollow cylinders, and the size of the second opening is larger than that of the first opening.

[0022] Furthermore, the dust collecting cover further includes a cone, and two ends of the cone are respectively connected to the first opening and the second opening.

[0023] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0024] The utility model provides a diversion pipe on the dust collecting cylinder to change the dust flow direction. The dust after the change of direction is counteracted and mixed with the dust flowing vertically upward in the cylinder. Energy is dissipated here, thereby playing a deceleration role, greatly reducing the speed at which the dust escapes and is ejected vertically upward. The dust stays for a relatively longer time, making it easier to be sucked away by the fan from the air inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the working principle of the dust collection device in one embodiment of the present application;

[0026] Figure 2 This is a schematic diagram of the overall structure of a dust collecting device in one embodiment of the present application;

[0027] Figure 3 This is a schematic diagram of the dust cover structure in one embodiment of the present application;

[0028] Figure 4 This is a schematic diagram of the dust collecting cylinder structure in one embodiment of the present application;

[0029] Figure 5 This is a schematic diagram of the structure of the pressure plate and the gasket in one embodiment of the present application;

[0030] Figure 6 This is a schematic diagram of the gasket structure in one embodiment of the present application.

[0031] Explanation of the numbers in the schematic diagram:

[0032] Dust collecting cylinder 1, air inlet 11, air outlet 12, air intake 13, cylinder body 14, connecting plate 15, pressing plate 16, gasket 17;

[0033] Diverter pipe 2, air inlet pipe 21, air outlet pipe 22, connecting pipe 23;

[0034] The dust collecting cover 3 , the first opening 31 , the second opening 32 , and the cone 33 . DETAILED DESCRIPTION

[0035] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0036] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology. They are not used to limit the conditions for implementation of the present invention and therefore have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present utility model without affecting the efficacy and purpose of the present invention. At the same time, terms such as "upper", "lower", "left", "right", and "middle" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0037] During drilling operations, a drilling rig continuously blows crushed slag and rock chips out of the hole using high-pressure airflow, using the exhaust air pressure to blow dust toward the hole. The dust blown out of the hole needs to be promptly collected and processed, for example, by suction with a dust removal blower. The dust removal system, which includes a cyclone dust collector and a pulse dust collector, effectively reduces dust emission concentration through primary coarse dust removal and secondary fine dust removal, improving the operating environment and preventing dust hazards to workers. Furthermore, timely dust removal can effectively reduce dust accumulation, prevent dust from exceeding the limit, and thus eliminate safety hazards. Dust collection devices can also extend equipment life, reduce equipment wear and maintenance costs.

[0038] The dust removal effect of the dust collecting device in the prior art is not ideal, because the speed of the air flow blown back from the hole is too fast, and part of the dust air flow cannot be sucked away by the dust removal system in time.

[0039] The present application discloses a drilling rig dust collecting device, which improves the dust collection efficiency of the fan by reducing the dust velocity at the blowing-out orifice.

[0040] The present invention discloses a dust collecting device for a drilling rig, comprising a dust collecting cylinder 1 and a dust collecting hood 3. The dust collecting hood 3 is located below the dust collecting cylinder 1 and is detachably connected to the dust collecting cylinder 1. The dust collecting hood 3 is generally trumpet-shaped, with a small upper opening and a large lower opening. The lower opening is close to the drill hole, which can effectively prevent dust from overflowing.

[0041] The dust collecting cylinder 1 is the most critical part of the dust collecting device. The design of the dust collecting cylinder 1 directly affects the dust removal efficiency. Therefore, optimizing the design of the dust collecting cylinder 1 is the original intention of this application.

[0042] The sidewall of the dust collector 1 is equipped with several diverter pipes 2 and an air intake pipe. There are no fewer than two diverter pipes 2. Dust flowing out of the diverter pipes 2 counteracts dust escaping vertically upward from the dust collector 1, reducing its velocity. The dust collector 1 is also equipped with an air intake pipe, which draws in dust from the dust collector 1 after the counteraction and / or dust escaping vertically upward. Because the dust velocity is reduced, the dust stays relatively longer, allowing the dust removal system to absorb more dust.

[0043] The detailed working principle is as follows: Dust enters dust collector 1 and begins to split. Some dust flows vertically upward along dust collector 1, while some enters diverter pipe 2. Dust changes direction after exiting diverter pipe 2. The dust exiting diverter pipe 2 flows diagonally downward. The deflected dust mixes with the dust flowing vertically upward within the dust collector, creating turbulence. This energy dissipates here, slowing down the dust and significantly reducing its upward velocity, making it more easily drawn in by the fan through the air intake.

[0044] An air inlet 11 and an air outlet 12 are provided on the wall of the dust collecting cylinder 1. The air outlet 12 is located above the air inlet 11. Preferably, the air outlet 12 is located directly above the air inlet 11, and the net distance between the air inlet 11 and the air outlet 12 should not be too far, preferably 250mm to 300mm, to avoid excessive reduction in dust rate.

[0045] The manifold 2 includes an inlet pipe 21, an outlet pipe 22, and a connecting pipe 23. The connecting pipe 23 is used to sealably connect the inlet pipe 21 and the outlet pipe 22. The inlet pipe 21 is sealedly connected to the air inlet 11, and the outlet pipe 22 is sealedly connected to the air outlet 12. Preferably, both the inlet pipe 21 and the outlet pipe 22 are straight pipes with the same diameter, while the connecting pipe 23 is a curved pipe. The inlet pipe 21 is longer than the outlet pipe 22.

[0046] The dust collecting cylinder 1 is provided with an air inlet 13 for connecting to the air inlet pipe. In order to make the air inlet pipe better absorb dust, the air outlet 12 and the air inlet 13 are roughly located at the same horizontal plane. At the same time, in order to ensure the dust collection effect, the size of the air inlet 13 is larger than that of the air outlet 12.

[0047] Relative to the direction of airflow, the inlet pipe 21 is positioned obliquely upward, while the outlet pipe 22 is positioned obliquely downward. The angle formed between the inlet pipe 21 and the central axis of the dust collecting cylinder 1 ranges from 30° to 50°, while the angle formed between the outlet pipe 22 and the central axis of the dust collecting cylinder 1 is no greater than the angle formed between the inlet pipe 21 and the central axis of the dust collecting cylinder 1. It should be noted that the overall shape of the diverter pipe 2 roughly resembles the outer contour of a human ear.

[0048] The dust collecting cylinder 1 includes a cylinder body 14 and a connecting plate 15 fixedly connected to the top of the cylinder body 14 . Preferably, the cylinder body 14 and the connecting plate 15 are integrally formed, and a through hole with the same inner diameter as the cylinder body 14 is opened in the middle of the connecting plate 15 .

[0049] The drill support mechanism is used to limit the drill rod and maintain its vertical movement. It is equipped with a pressure plate 16, which is located above the connecting plate 15 and is detachably connected to it. A through hole in the center of pressure plate 16, corresponding in position and size to the connecting plate 15, is provided for inserting the drill rod. Preferably, pressure plate 16 is connected to the connecting plate 15 at its four corners by bolt assemblies.

[0050] A gasket 17 is tightly attached between the pressure plate 16 and the connecting plate 15. A hole is provided in the middle of the gasket 17. The diameter of the hole is smaller than the inner diameter of the barrel body 14 and slightly larger than the diameter of the drill rod. The gasket 17 can reduce dust from escaping from above. Preferably, a double-layer gasket 17 is provided between the pressure plate 16 and the connecting plate 15.

[0051] The dust cover 3 is detachably connected to the dust collecting cylinder 1, preferably connected by a clamp. The dust cover 3 includes a first opening 31 and a second opening 32 arranged opposite to each other. The first opening 31 is sealed to the lower side of the cylinder body 14, and the second opening 32 is used to be close to the drilling opening.

[0052] The second opening 32 is larger than the first opening 31 . The first opening 31 is a hollow cylinder to ensure a better sealing connection with the cylinder body 14 . The second opening 32 is also a hollow cylinder to accommodate more dust.

[0053] The dust hood 3 also includes a vertebral body 33, the two ends of which are sealedly connected to the first opening 31 and the second opening 32 respectively. Preferably, the first opening 31, the second opening 32 and the vertebral body 33 are integrally formed. It should be noted that the central axis of the first opening 31 coincides with the central axis of the barrel body 14, and the central axis of the second opening 32 is parallel to but does not coincide with the central axis of the first opening 31. Therefore, the vertebral body 33 is an asymmetric vertebral body. When the vertebral body 33 is cut by any plane containing the central axis of the barrel body 14, the angles between the two side lines after cutting and the central axis of the barrel body 14 are not the same. The vertebral body 33 is asymmetric in order to avoid the drill support mechanism of the drilling rig and provide space for the rest of the components of the drilling rig.

[0054] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A dust collecting device for a drilling rig, characterized by: include, A dust collecting cylinder (1) is provided with a plurality of diversion pipes (2) for offsetting the dust flowing out of the diversion pipes with the dust escaping vertically upward from the dust collecting cylinder (1); the dust collecting cylinder (1) is also provided with an air intake pipe for sucking the offset dust and / or the dust escaping vertically upward from the dust collecting cylinder (1); A dust hood (3) is located below the dust collecting cylinder (1) and is connected to the dust collecting cylinder (1); the dust hood (3) is used to be closely attached to the drilling hole.

2. The drilling rig dust collecting device according to claim 1, characterized in that: An air inlet (11) and an air outlet (12) are provided on the wall of the dust collecting cylinder (1), and the air outlet (12) is located above the air inlet (11); The diverter pipe (2) comprises an air inlet pipe (21), an air outlet pipe (22), and a connecting pipe (23) for connecting the air inlet pipe (21) and the air outlet pipe (22); The air inlet pipe (21) is connected to the air inlet (11), and the air outlet pipe (22) is connected to the air outlet (12).

3. The drilling rig dust collecting device according to claim 2, characterized in that: An air intake port (13) for connecting to an air intake pipe is provided on the wall of the dust collecting cylinder (1), and the center of the air intake port (13) and the center of the air outlet (12) are approximately located on the same horizontal plane.

4. The drilling rig dust collecting device according to claim 2, characterized in that: The air inlet pipe (21) and the air outlet pipe (22) are both straight pipes, and the connecting pipe (23) is a curved pipe.

5. The drilling rig dust collecting device according to claim 4, characterized in that: Relative to the airflow direction, the air inlet pipe (21) is arranged obliquely upward, and the air outlet pipe (22) is arranged obliquely downward.

6. The drilling rig dust collecting device according to claim 5, characterized in that: The angle formed by the air inlet pipe (21) and the central axis of the dust collecting cylinder (1) ranges from 30° to 50°, and the angle formed by the air outlet pipe (22) and the central axis of the dust collecting cylinder (1) is not greater than the angle formed by the air inlet pipe (21) and the central axis of the dust collecting cylinder (1).

7. The drilling rig dust collecting device according to claim 1, characterized in that: The dust collecting cylinder (1) comprises a cylinder body (14) and a connecting plate (15) fixedly connected to the top of the cylinder body (14); a through hole having the same inner diameter as the cylinder body (14) is provided in the middle of the connecting plate (15); The connecting plate (15) is used for being detachably connected to a pressure plate (16) on a drill supporting mechanism, and the pressure plate (16) is located above the connecting plate (15); a gasket (17) is provided between the connecting plate (15) and the pressure plate (16), and the gasket (17) is used for reducing dust escape.

8. The drilling rig dust collecting device according to claim 7, characterized in that: The gasket (17) is provided with an opening in the middle thereof, the diameter of the opening being smaller than the inner diameter of the cylinder body (14) and slightly larger than the diameter of the drilled hole.

9. The drilling rig dust collecting device according to claim 1, characterized in that: The dust collecting cover (3) is detachably connected to the dust collecting cylinder (1), and the dust collecting cover (3) comprises a first opening (31) and a second opening (32) which are arranged opposite to each other; The first opening (31) is used for sealing connection with the lower side of the barrel body (14), and the second opening (32) is used for being close to the drilling hole; the first opening (31) and the second opening (32) are hollow cylinders, and the size of the second opening (32) is larger than that of the first opening (31).

10. The drilling rig dust collecting device according to claim 9, characterized in that: The dust collecting cover (3) further comprises a cone (33), and two ends of the cone (33) are respectively connected to the first opening (31) and the second opening (32).

Images