Pulverized coal collecting device for drilling cutting method
By designing a coal powder collection device for drilling chip method, including a sleeve, a funnel, a first connecting barrel and a second connecting barrel, the problems of coal powder mass loss and dust pollution in the prior art are solved, and a more accurate coal powder collection and a safer operating environment are achieved.
Patent Information
- Application Number
- CN202420395053.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The existing coal powder collection device used in the drilling chip method can easily lead to mass loss of coal powder, affecting the prediction of coal and gas outbursts and impact ground pressure hazards, and dust pollution poses a threat to the health of operators.
A coal powder collection device including a sleeve, a funnel, a first connecting barrel and a second connecting barrel is designed. The coal wall is inserted into the first connecting barrel, and the coal powder enters the funnel through the sleeve and is collected into the weighing container. The design of the second connecting barrel extends the spread path of the coal powder, reduces mass loss, and further ensures the collection accuracy of the coal powder through an annular brush and an annular rubber pad.
It effectively reduces the mass loss of coal powder, makes coal powder weighing more accurate, ensures the safety of impact hazardous areas, reduces dust pollution, and improves the safety of the operating environment.
Smart Images
Figure CN222635842U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of coal mine safety measurement equipment, in particular to a coal powder collecting device used for a drilling cuttings method. Background Art
[0002] The cuttings method uses a small diameter (42-45 mm) drill hole to determine the stress concentration in the rock mass and the tendency and location of rock burst according to the amount of cuttings discharged and its changing pattern when drilling at different depths. During the drilling process, if dangerous coal powder measurement values or the drill rod is stuck within the specified depth range, it is considered to be a rock burst hazard and corresponding emergency measures should be taken. During the cuttings collection operation, a drill bit of a specified size is used to drill in the coal seam or rock formation at a specified speed, and all cuttings are sampled by the orifice sampling method. The general method is to let the cuttings scatter freely below the orifice, collect them in a container for weighing during measurement, or place the container directly below the orifice for sampling. This traditional sampling method easily causes the cuttings to fall into the ground and break up and cannot be collected completely; it is also easy to be blown away by the wind flow of the fan duct, resulting in a loss of cuttings.
[0003] The existing coal dust collection devices used for the drill cuttings method generally directly use woven bags to collect the fallen coal dust, which has at least the following problems: the drill cuttings are easily blown away by the wind, resulting in quality loss, which leads to the distortion of the prediction indicators of coal and gas outburst and rock burst danger, and cannot accurately guide the on-site construction, affecting the on-site standardization level, and bringing potential hidden dangers to coal mine safety production. In addition, a large amount of dust is generated during the collection of drill cuttings, which pollutes the working environment of the working face and poses an occupational health threat to the operators.
[0004] Therefore, this field needs a new technical solution to solve the above problems. Summary of the invention
[0005] In order to improve or solve the technical problem that the pulverized coal collection device in the prior art is prone to quality loss, the utility model provides a pulverized coal collection device for the drilling cuttings method. The pulverized coal collection device for the drilling cuttings method comprises: a sleeve having a first end and a second end opposite to each other; a funnel connected to the sleeve; a first connecting tube arranged at the first end of the sleeve; the first connecting tube is sealed and connected to the sleeve and is suitable for being inserted into the coal wall; a second connecting tube is arranged at the second end of the sleeve; the second connecting tube is sealed and connected to the sleeve and the diameter of the second connecting tube is smaller than the diameter of the sleeve.
[0006] In the utility model, the pulverized coal collection device for the drilling cuttings method includes a sleeve, a funnel, a first connecting cylinder and a second connecting cylinder. Among them, the first connecting cylinder is suitable for being inserted into the coal wall; the sleeve is connected to the first connecting cylinder and the funnel, and the funnel is suitable for being connected to a weighing container. When in use, the first connecting cylinder is inserted into the coal wall so that the pulverized coal collection device is fixed on the coal wall. During the drilling process, the drilled pulverized coal enters the funnel through the sleeve and then enters the weighing container. The second connecting cylinder is arranged at the second end of the sleeve, which can extend the spreading path of the pulverized coal, prevent the pulverized coal from escaping from the sleeve, and reduce the mass loss of the pulverized coal; the diameter of the second connecting cylinder is smaller than the diameter of the sleeve, which can match the diameter of the drill bit shaft, reduce the gap between the two, and further reduce the mass loss of the pulverized coal. Through the above-mentioned setting, the utility model can collect the pulverized coal more conveniently, reduce the mass loss of the pulverized coal, make the pulverized coal weighing more accurate, and more accurately determine the safety of the impact danger area, thereby ensuring safe production.
[0007] In the preferred technical solution of the coal powder collection device for the drilling cuttings method, a third connecting tube is provided at one end of the funnel away from the sleeve, and the third connecting tube is connected to the funnel. Through the above arrangement, the third connecting tube facilitates the connection between the weighing container and the funnel, thereby facilitating the collection of coal powder.
[0008] In the preferred technical solution of the coal dust collecting device for the drilling cuttings method, a mounting structure is arranged on the sleeve, and the mounting structure is configured to prevent the first connecting tube from being separated from the coal wall. Through the above arrangement, the arrangement of the mounting structure can ensure the normal use of the coal dust collecting device and prevent the coal dust collecting device from being separated from the coal wall.
[0009] In the preferred technical solution of the coal dust collecting device for the drilling cuttings method, the mounting structure includes a hook mounted on the sleeve and a chain connected to the hook. Through the above arrangement, the arrangement of the hook and the chain can more conveniently lock the sleeve on the coal wall to prevent the first connecting tube from falling out of the coal wall.
[0010] In the preferred technical solution of the coal dust collection device for the drilling cuttings method, an annular brush is arranged in the sleeve. Through the above arrangement, the annular brush can clean the drill shaft of the drill bit, prevent the coal dust from adhering to the drill shaft and being carried away from the sleeve, and make the coal dust collection more accurate.
[0011] In the preferred technical solution of the coal dust collection device for the drilling cuttings method, an annular rubber pad is arranged in the second connecting cylinder. Through the above arrangement, the arrangement of the annular rubber pad can prevent the coal dust from escaping from the sleeve at the second connecting cylinder, making the coal dust collection more accurate.
[0012] In the preferred technical solution of the coal dust collecting device for the drilling cuttings method, an embedding groove is arranged at one end of the second connecting tube away from the sleeve, and the annular rubber pad is arranged in the embedding groove. Through the above arrangement, the arrangement of the embedding groove facilitates the installation and removal of the annular rubber pad and the second connecting tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:
[0014] Figure 1 It is an overall schematic diagram of an embodiment of the utility model of a coal powder collecting device for a drilling cuttings method.
[0015] Figure 2 The utility model is a schematic diagram of the internal structure of a coal powder collecting device for a drilling cuttings method according to an embodiment of the present invention.
[0016] List of reference numerals: 1. sleeve; 11. annular brush; 2. funnel; 21. third connecting tube; 3. first connecting tube; 4. second connecting tube; 41. annular rubber pad; 5. hook. DETAILED DESCRIPTION
[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.
[0018] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0019] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0020] In order to improve or solve the technical problem that the pulverized coal collection device in the prior art is prone to quality loss, the utility model provides a pulverized coal collection device for the drilling cuttings method. The pulverized coal collection device for the drilling cuttings method comprises: a sleeve 1 having a first end and a second end opposite to each other; a funnel 2 connected to the sleeve 1; a first connecting tube 3 arranged at the first end of the sleeve 1; the first connecting tube 3 is sealed and connected to the sleeve 1 and is suitable for being inserted into the coal wall; a second connecting tube 4 is arranged at the second end of the sleeve 1; the second connecting tube 4 is sealed and connected to the sleeve 1 and the diameter of the second connecting tube 4 is smaller than the diameter of the sleeve 1.
[0021] Figure 1 1 is a schematic diagram of an embodiment of the coal powder collecting device for the drilling cuttings method of the utility model. Figure 1 As shown, in one or more embodiments, the coal powder collecting device for the drilling cuttings method of the utility model includes a sleeve 1, a funnel 2, a first connecting tube 3 and a second connecting tube 4.
[0022] Figure 2 Schematic diagram of the internal structure of the embodiment of the coal powder collecting device for the drilling cuttings method of the utility model. Figure 1 and Figure 2 As shown, the sleeve 1 is roughly cylindrical and has a first end and a second end opposite to each other. The first connecting tube 3 is arranged on the first end, the second connecting tube 4 is arranged on the second end, and the funnel 2 is arranged on the circumferential side wall of the sleeve 1. Preferably, the sleeve 1 is a cylinder with a length of 300 mm and a diameter of 100 mm. In one or more embodiments, an annular brush 11 is arranged in the sleeve 1. Specifically, the brush includes a connecting belt and bristles fixed on the connecting belt. The connecting belt is fixed to the inner circumferential wall of the sleeve 1 by bonding, and the bristles extend toward the middle direction of the sleeve 1. Further, a mounting structure is arranged on the sleeve 1, and the mounting structure is used to connect the sleeve 1 and the coal wall. Specifically, the mounting structure includes a hook 5 installed on the sleeve 1 and a chain connected to the hook 5. Two hooks 5 are provided, and the two hooks 5 are respectively close to the first end and the second end of the sleeve 1. One end of the chain is connected to the hook 5, and the other end is connected to the side of the coal wall or the roof of the tunnel.
[0023] Continue to see Figure 1 and Figure 2In one or more embodiments, the first connecting tube 3 is arranged at the first end of the sleeve 1 and can be inserted into the coal wall. The first connecting tube 3 is roughly cylindrical and is coaxially arranged with the sleeve 1. Preferably, the first connecting tube 3 is a cylinder with a length of 200 mm and a diameter of 60 mm. Before the coal powder collection device is used, a mounting hole with a length of 200 mm and a diameter similar to that of the first connecting tube 3 is first opened on the coal wall, and then the first connecting tube 3 is inserted into the mounting hole, and then fixed with a mounting structure to prevent the first connecting tube 3 from being separated from the mounting hole, and then drilling cuttings can be started. Furthermore, a sealed fixed connection is formed between the first connecting tube 3 and the sleeve 1 by welding. Alternatively, a sealed connection can be formed between the first connecting tube 3 and the sleeve 1 by a flange and a sealing gasket.
[0024] Continue to see Figure 1 and Figure 2 In one or more embodiments, the second connecting tube 4 is arranged at the second end of the sleeve 1, and the diameter of the second connecting tube 4 is smaller than the diameter of the sleeve 1. Specifically, the second connecting tube 4 is a cylinder with a length of 100 mm and a diameter of 60 mm. Further, an annular rubber pad 41 is arranged in the second connecting tube 4. The inner diameter of the annular rubber pad 41 is slightly larger than the diameter of the drill shaft of the drill bit, so that the drill shaft can be inserted more conveniently. Further, an embedded groove is arranged at one end of the second connecting tube 4 away from the sleeve 1, and the annular rubber pad 41 is arranged in the embedded groove. Specifically, two annular limiting walls arranged at intervals are arranged at one end of the second connecting tube 4 away from the sleeve 1, and the embedded groove is surrounded by two annular limiting walls. Alternatively, the annular rubber pad 41 is fixed in the second connecting tube 4 by bonding. In one or more embodiments, a sealed fixed connection is formed between the second connecting tube 4 and the sleeve 1 by welding.
[0025] Continue to see Figure 1 and Figure 2 In one or more embodiments, the funnel 2 is roughly in the shape of a square funnel 2. Specifically, the funnel 2 has a relatively thick end and a thin end, the thick end is sealed with the sleeve 1, and the opening of the sleeve 1 matches the shape of the thick end of the funnel 2, so that the coal powder can easily fall into the funnel 2. Preferably, the length of the funnel 2 is 200mm, the diameter of the thick end is 200mm, and the diameter of the thin end is 60mm. Further, a third connecting cylinder 21 is arranged at the thin end of the funnel 2, and the third connecting cylinder 21 is convenient for connecting to a weighing container. Preferably, the third connecting cylinder 21 is a cylinder with a length of 100mm and a diameter of 60mm.
[0026] So far, the technical scheme of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical schemes after these changes or substitutions will fall within the protection scope of the present invention.
Claims
1. A coal powder collecting device for a drilling cuttings method, characterized in that: include: A sleeve (1) having a first end and a second end opposite to each other; A funnel (2) connected to the sleeve (1); A first connecting tube (3) is arranged at a first end of the sleeve (1); the first connecting tube (3) is in sealing communication with the sleeve (1) and is suitable for being inserted into a coal wall; A second connecting tube (4) is arranged at the second end of the sleeve (1); the second connecting tube (4) is in sealing communication with the sleeve (1) and the diameter of the second connecting tube (4) is smaller than the diameter of the sleeve (1); A mounting structure is arranged on the sleeve (1), and the mounting structure is configured to prevent the first connecting tube (3) from being separated from the coal wall; The mounting structure comprises a hook (5) mounted on the sleeve (1) and a chain connected to the hook (5).
2. The coal powder collecting device for the drilling cuttings method according to claim 1, characterized in that: A third connecting tube (21) is provided at one end of the funnel (2) away from the sleeve (1), and the third connecting tube (21) is connected to the funnel (2).
3. The coal powder collecting device for the drilling cuttings method according to claim 1, characterized in that: An annular brush (11) is arranged in the sleeve (1).
4. The coal powder collecting device for the drilling cuttings method according to claim 1, characterized in that: An annular rubber pad (41) is arranged inside the second connecting tube (4).
5. The coal powder collecting device for the drilling cuttings method according to claim 4, characterized in that: An embedding groove is arranged at one end of the second connecting tube (4) away from the sleeve (1), and the annular rubber pad (41) is arranged in the embedding groove.