Drilling coal slime cleaning device

Abstract

The invention provides a drill hole coal slime cleaning device which comprises a drainage part, a grinding assembly, a collecting assembly and a flushing assembly, the drainage part is arranged adjacent to a drill hole, the drainage part is provided with a drainage inlet and a drainage outlet so as to be used for receiving coal slime discharged from the drill hole, the grinding assembly comprises a first grinding part and a second grinding part, and the first grinding part and the second grinding part are used for grinding coal slime discharged from the drill hole. The first grinding part is adjacent to the drainage outlet, the first grinding part is connected with the second grinding part, the first grinding part and the second grinding part define a grinding gap in the vertical direction, and at least one of the first grinding part and the second grinding part can move so as to be used for grinding coal slime penetrating through the grinding gap into powder; the first collecting piece is arranged adjacent to the second grinding piece and used for collecting coal slime flowing out of the second grinding piece, and the washing assembly is connected with the grinding assembly so that washing liquid can be introduced into the grinding gap. According to the cleaning device, coal slime can be prevented from overflowing, and normal operation of equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine drilling, and in particular to a drilling coal slime cleaning device. Background Art

[0002] When coal mining faces are carrying out local pre-pressure relief measures to prevent and control rock burst, different types of pressure relief boreholes need to be constructed on the coal body and coal wall side of the mined coal. Belt conveyors are arranged on the transport drift and excavation drift of the mining face close to the coal body and coal wall side. Although the crawler drilling rigs currently used can basically achieve cross-belt drilling, all types of boreholes for anti-burst construction are wet drilling. During the drilling process, the coal mud flows out from the borehole mouth and flows to the bottom of the belt conveyor, causing the rollers to jam, the belts to wear, and the underground industrial environment to be polluted. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a drilling coal slime cleaning device, which can timely clean the coal slime during the anti-blowout drilling construction to avoid coal slime overflow and ensure the normal operation of the equipment.

[0005] The drilling coal slime cleaning device of the embodiment of the present invention comprises:

[0006] A drainage member, the drainage member is arranged adjacent to the borehole, the drainage member has a drainage inlet and a drainage outlet, and is used to receive the coal slime discharged from the borehole;

[0007] a grinding assembly, the grinding assembly comprising a first grinding member and a second grinding member, the first grinding member being adjacent to the drainage outlet so as to receive the coal slime discharged from the borehole, the first grinding member being connected to the second grinding member, the first grinding member and the second grinding member defining a grinding gap in a vertical direction, and at least one of the first grinding member and the second grinding member being movable so as to grind the coal slime passing through the grinding gap into powder;

[0008] a collecting assembly, the collecting assembly comprising a first collecting member, the first collecting member being arranged adjacent to the second grinding member and being used for collecting coal slime flowing out of the second grinding member;

[0009] A flushing assembly is connected to the grinding assembly and is used to introduce flushing liquid into the grinding gap.

[0010] The drilling coal slime cleaning device of the embodiment of the present invention can drain the coal slime discharged from the drilling hole to the grinding component through the drainage piece, and use the grinding component to grind the larger block particles discharged from the drilling hole to avoid the accumulation of coal blocks and rock particles, and use the flushing component to flush the particles being ground, thereby increasing the flow rate of the coal slime and particles and improving the collection efficiency of the collection component.

[0011] In some embodiments, the first grinding piece includes a first grinding body, the first grinding body has a first flow channel, the second grinding piece includes a second grinding body, the second grinding body has a second flow channel, the first flow channel and the second flow channel are both arranged at an angle, and the outer peripheral wall of the first grinding body and the wall surface of the second flow channel define the grinding gap.

[0012] In some embodiments, the first grinding member further includes a first grinding portion, which is connected to the outer peripheral wall of the first grinding body and is placed in the grinding gap, and the second grinding member further includes a second grinding portion, which is connected to the outer peripheral wall of the second grinding body and is placed in the grinding gap, and the first grinding portion is movable along the circumference of the second grinding portion.

[0013] In some embodiments, the grinding assembly further includes a grinding drive member, which is connected to the first grinding body to drive the first grinding body to move and drive the first grinding portion to move along the circumference of the second grinding portion.

[0014] In some embodiments, the grinding drive member includes a driving body and a connecting portion, the output shaft of the driving body is connected to an eccentric wheel, the first end of the connecting portion is connected to the first grinding body, and the second end of the connecting portion is adapted to the eccentric wheel.

[0015] In some embodiments, the collecting component also includes a second collecting piece, the first collecting piece is placed in the cavity of the second collecting piece, the side wall and the bottom wall of the first collecting piece are provided with filter holes, and the side wall of the first collecting piece is also provided with an overflow hole, and the overflow hole is located above the filter hole.

[0016] In some embodiments, the collecting assembly further includes an overflow piece, the overflow piece is sleeved on the second collecting piece, and a connecting hole is opened on the side wall of the second collecting piece, and the connecting hole connects the cavity of the overflow piece and the cavity of the second collecting piece.

[0017] In some embodiments, the connecting hole is located below the overflow hole.

[0018] In some embodiments, the flushing assembly includes a flushing inlet and a flushing outlet, wherein the flushing inlet is in communication with the cavity of the second collecting member, and the flushing outlet is in communication with the grinding gap.

[0019] In some embodiments, the guide member includes a first guide segment and a second guide segment connected to each other, the first guide segment is arranged adjacent to the borehole, and a radial dimension of the first guide segment gradually decreases from bottom to top. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a drilling coal slime cleaning device according to an embodiment of the present invention.

[0021] Figure 2 yes Figure 1 An enlarged schematic diagram of A is shown in FIG.

[0022] Figure 3 It is a schematic diagram of the motion trajectory of the first grinding part of the drilling coal slime cleaning device according to an embodiment of the present invention.

[0023] Figure 4 This is a partial structural diagram of a drilling coal slime cleaning device according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] 100, drilling, 200, grinding gap,

[0026] 1. drainage member, 11. first drainage section, 12. second drainage section,

[0027] 2. Grinding assembly, 21. First grinding member, 211. First grinding body, 2111. First flow channel, 2112. First grinding portion, 22. Second grinding member, 221. Second grinding body, 2211. Second flow channel, 2212. Second grinding portion, 23. Grinding drive member, 231. Drive body, 232. Connecting portion, 233. Eccentric wheel,

[0028] 3. Collection component, 31. First collection component, 311. Overflow hole, 32. Second collection component, 321. Communication hole, 33. Overflow component,

[0029] 4. Rinse components. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0031] like Figure 1-Figure 4As shown, the drilling coal slime cleaning device according to the embodiment of the present invention comprises: a drainage component 1, a grinding component 2, a collecting component 3 and a flushing component 4.

[0032] The flow guide 1 is arranged adjacent to the borehole 100, and has a flow inlet and a flow outlet for receiving the coal slime discharged from the borehole 100. The grinding assembly 2 includes a first grinding member 21 and a second grinding member 22, the first grinding member 21 is adjacent to the flow outlet for receiving the coal slime discharged from the borehole 100, the first grinding member 21 is connected to the second grinding member 22, the first grinding member 21 and the second grinding member 22 define a grinding gap 200 in the up and down direction, and at least one of the first grinding member 21 and the second grinding member 22 is movable for grinding the coal slime passing through the grinding gap 200 into powder. The collecting assembly 3 includes a first collecting member 31, the first collecting member 31 is arranged adjacent to the second grinding member 22, and the first collecting member 31 is used to collect the coal slime flowing out of the second grinding member 22. The flushing assembly 4 is connected to the grinding assembly 2, and the flushing assembly 4 is used to pass a flushing liquid into the grinding gap 200.

[0033] Specifically, Figure 1 and Figure 2 As shown, the guide member 1 is arranged below the borehole 100 so that the coal slime discharged from the borehole 100 can flow to the grinding assembly 2 through the guide member 1. The grinding assembly 2 is located below the guide member 1, and the first grinding member 21 and the second grinding member 22 are arranged in sequence from top to bottom, and a grinding gap 200 is defined between the lower wall surface of the first grinding member 21 and the second grinding member 22, so that the coal slime can flow to the collecting assembly 3 along the first grinding member 21, the second grinding member 22 and the grinding gap 200 in sequence.

[0034] It can be understood that the coal slime discharged from the borehole 100 contains coal lumps or rock lumps of different particle sizes. When the coal slime passes through the grinding gap 200, the first grinding member 21 and the second grinding member 22 can move relative to each other, so that the coal lumps or rock lumps are squeezed and ground in the grinding gap 200 to form powder or small particle blocks, thereby facilitating the flow and collection of the coal slime.

[0035] Optionally, the first grinding member 21 can move relative to the second grinding member 22; or the second grinding member 22 can move relative to the first grinding member 21; or both the first grinding member 21 and the second grinding member 22 can move. The first grinding member 21 and the second grinding member 22 can adopt extrusion grinding, that is, the first grinding member 21 or the second grinding member 22 can move relative to each other in the up and down directions, so as to grind the coal slime by changing the size of the grinding gap 200; or the first grinding member 21 and the second grinding member 22 can move relative to each other in the horizontal direction to grind the coal slime.

[0036] That is to say, the drilling coal slime cleaning device of the embodiment of the present invention can drain the coal slime discharged from the borehole 100 to the grinding component 2 through the drainage piece 1, and use the grinding component 2 to grind the larger block particles discharged from the borehole 100 to avoid the accumulation of coal blocks and rock particles, and use the flushing component 4 to flush the particles being ground, thereby increasing the flow rate of the coal slime and particles and improving the collection efficiency of the collection component 3.

[0037] In some embodiments, the first grinding piece 21 includes a first grinding body 211, the first grinding body 211 has a first flow channel 2111, the second grinding piece 22 includes a second grinding body 221, the second grinding body 221 has a second flow channel 2211, the first flow channel 2111 and the second flow channel 2211 are both arranged at an angle, and the outer peripheral wall of the first grinding body 211 and the wall surface of the second flow channel 2211 define a grinding gap 200.

[0038] Specifically, Figure 1 and Figure 2 As shown, the first flow channel 2111 is arranged in a left high and right low manner, and the second flow channel 2211 is arranged in a left low and right high manner to facilitate the flow of coal slime. Optionally, the longitudinal sections of the first flow channel 2111 and the second flow channel 2211 are both semicircular, which further facilitates the flow of coal slime and the subsequent use of the wall surfaces of the first grinding body 211 and the second grinding body 221 to achieve the grinding function.

[0039] It is understandable that if Figure 1 and Figure 2 As shown, the right end of the first grinding member 21 is placed in the second flow channel 2211, and a grinding gap 200 is formed between the lower bottom wall of the first grinding body 211 and the inner wall of the second flow channel 2211, so that the coal slime can flow out through the grinding gap 200. It should be noted that the contour of the outer peripheral wall of the first grinding body 211 is similar to and adapted to the contour of the inner wall of the second flow channel 2211, so that when the first grinding body 211 and the second grinding body 221 perform the grinding function, the walls of the two are prevented from rubbing against each other, thereby ensuring the stable operation of the cleaning device.

[0040] In some embodiments, the first grinding member 21 also includes a first grinding portion 2112, which is connected to the outer peripheral wall of the first grinding body 211 and is placed in the grinding gap 200. The second grinding member 22 also includes a second grinding portion 2212, which is connected to the outer peripheral wall of the second grinding body 221 and is placed in the grinding gap 200. The first grinding portion 2112 is movable along the circumference of the second grinding portion 2212.

[0041] Specifically, Figure 1-Figure 3As shown, the first grinding part 2112 is located at the bottom of the first grinding body 211, and there are multiple first grinding parts 2112, and the multiple first grinding parts 2112 are evenly spaced along the outer wall surface of the first grinding body 211. The second grinding part 2212 is located on the wall surface of the second flow channel 2211, and there are multiple second grinding parts 2212, and the multiple second grinding parts 2212 are evenly spaced along the wall surface of the second flow channel 2211. It should be noted that the multiple first grinding parts 2112 correspond to the multiple second grinding parts 2212 one by one, and there is a gap between the first grinding parts 2112 and the second grinding parts 2212 in the left-right direction.

[0042] It is understandable that if Figure 1-Figure 3 As shown, taking the movable first grinding body 211 as an example, the first grinding body 211 can be movable in the horizontal direction relative to the second grinding body 221. Then, when the first grinding body 211 is moving, between the correspondingly arranged grinding parts (that is, one first grinding part 2112 and one second grinding part 2212 are arranged correspondingly), the first grinding part 2112 can move around the circumference of the second grinding part 2212, so that the size of the gap between the first grinding part 2112 and the second grinding part 2212 is always in a changing state. Therefore, the coal slime passing through the gap between the first grinding part 2112 and the second grinding part 2212 can be squeezed and ground into small particles or powder under the action of the first grinding part 2112 and the second grinding part 2212.

[0043] Optionally, the outer peripheral wall of the first grinding body 211 is arranged obliquely relative to the wall surface of the second flow channel 2211, that is, the radial dimension of the grinding gap 200 gradually increases from left to right. Therefore, the dimensions of the first grinding part 2112 and the second grinding part 2212 and the gap therebetween are adjusted accordingly, so as to ensure that the coal slime can smoothly pass through the grinding gap 200 at different positions of the grinding gap 200.

[0044] Preferably, if Figure 1 and Figure 2 As shown, the outer peripheral wall of the first grinding body 211 is parallel to the wall surface of the second flow channel 2211 to ensure the overall grinding effect of the grinding assembly 2.

[0045] In some embodiments, the grinding assembly 2 further includes a grinding drive 23 , which is connected to the first grinding body 211 to drive the first grinding body 211 to move and drive the first grinding portion 2112 to move along the circumferential direction of the second grinding portion 2212 .

[0046] It is understandable that if Figure 1-Figure 4As shown, the grinding drive member 23 can be a motor, and the output shaft of the motor is connected to the first grinding body 211 through a connecting device, so that the grinding drive member 23 can drive the first grinding body 211 to move in the horizontal direction after being started.

[0047] Optionally, the grinding drive 23 includes a driving body 231 and a connecting portion 232 , the output shaft of the driving body 231 is connected to the eccentric wheel 233 , the first end of the connecting portion 232 is connected to the first grinding body 211 , and the second end of the connecting portion 232 is adapted to the eccentric wheel 233 .

[0048] It is understandable that if Figure 4 As shown, the connection part 232 is a square frame, and the eccentric wheel 233 is connected to the driving body 231. The eccentric wheel 233 is placed inside the connection part 232, and the peripheral side wall of the eccentric wheel 233 contacts the inner wall surface of the connection part 232, so that when the output shaft of the driving body 231 rotates, the eccentric wheel 233 can be driven to rotate, so that the connection part 232 is used to drive the first grinding body 211 to move in the horizontal direction to achieve the grinding function.

[0049] In some embodiments, the collecting component 3 also includes a second collecting piece 32, the first collecting piece 31 is placed in the cavity of the second collecting piece 32, the side wall and the bottom wall of the first collecting piece 31 are provided with filter holes, and the side wall of the first collecting piece 31 is also provided with an overflow hole 311, and the overflow hole 311 is located above the filter hole.

[0050] Specifically, Figure 1 As shown, the second collecting member 32 is sleeved on the outside of the first collecting member 31. The first collecting member 31 is used to receive the coal slime discharged from the grinding gap 200, and the filter hole of the first collecting member 31 can discharge the water carried by the coal slime into the second collecting member 32 to achieve solid-liquid separation. In addition, when the amount of coal slime collected in the first collecting member 31 reaches the position of the overflow hole 311, the coal slime can flow out of the overflow hole 311 into the second collecting member 32 to prevent the coal slime from overflowing from the first collecting member 31 to the outside of the collecting assembly 3.

[0051] It can be understood that the side wall of the first collecting piece 31 can adopt a filter plate, that is, the peripheral side wall and the bottom wall of the first collecting piece 31 are both filter plates, and the upper edge of the peripheral side wall of the first collecting piece 31 is provided with a surrounding plate, and an overflow hole 311 is opened on the surrounding plate, thereby, the filter plate can be used to filter the water carried by the coal slime into the second collecting piece 32, and the coal slime exceeding the filter plate can flow to the second collecting piece 32 through the overflow hole 311, thereby preventing the overflow of the wall coal slime.

[0052] In some embodiments, the collecting component 3 further includes an overflow member 33 , which is sleeved on the second collecting member 32 , and a connecting hole 321 is opened on the side wall of the second collecting member 32 , and the connecting hole 321 connects the cavity of the overflow member 33 and the cavity of the second collecting member 32 .

[0053] It is understandable that if Figure 1 As shown, the overflow member 33 is mounted on the second collecting member 32, and the cavity of the overflow member 33 is connected to the communication hole 321, so that the liquid in the second collecting member 32 can flow to the overflow member 33 through the communication hole 321. Optionally, the overflow member 33 also includes an overflow outlet, and the overflow outlet can discharge the liquid in the overflow member 33.

[0054] Preferably, the communication hole 321 is located below the overflow hole 311. It can be understood that Figure 1 As shown, the communication hole 321 is located below the overflow hole 311 to ensure that the liquid level in the second collecting member 32 is lower than the overflow hole 311 , thereby preventing the liquid in the second collecting member 32 from flowing back to the first collecting member 31 .

[0055] In addition, the liquid flowing out through the overflow hole 311 can be deposited in the second collecting piece 32, thereby completing the solid-liquid separation (i.e., the solid is deposited on the bottom wall of the second collecting piece 32). Therefore, the liquid discharged through the connecting hole 321 can be discharged from the overflow outlet to avoid blockage of the overflow outlet.

[0056] In some embodiments, the flushing assembly 4 includes a flushing inlet and a flushing outlet. The flushing inlet is communicated with the cavity of the second collecting member 32 , and the flushing outlet is communicated with the grinding gap 200 .

[0057] It is understandable that if Figure 1 As shown, the flushing assembly 4 includes a flushing pipeline and a flushing pump. The flushing pump is arranged on the flushing pipeline. The two end ports of the flushing pipeline are a flushing inlet and a flushing outlet, respectively. That is, the flushing pump can be used to extract the liquid in the second collecting member 32 and discharge it into the second flow channel 2211 through the flushing pipeline. The extracted liquid flows to the first collecting member 31 through the second flow channel 2211 and the grinding gap 200 in turn for collection, thereby realizing the recycling of the liquid, avoiding the additional preparation of flushing liquid, and reducing the waste of resources.

[0058] In some embodiments, the drainage member 1 includes a first drainage section 11 and a second drainage section 12 connected to each other. The first drainage section 11 is arranged adjacent to the borehole 100 , and a radial dimension of the first drainage section 11 gradually decreases from bottom to top.

[0059] It is understandable that if Figure 1As described, the first drainage section 11 is located above the second drainage section 12, and the radial direction of the first drainage section 11 gradually decreases from top to bottom, that is, the upper end of the first drainage section 11 is arranged adjacent to the borehole 100 and the radial dimension of this part is the largest. Therefore, the first drainage section 11 can better collect the coal slime mixture discharged from the borehole 100 and avoid splashing of the coal slime, thereby further ensuring the stable operation of other equipment besides the cleaning device.

[0060] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0064] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0065] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A drilling coal slime cleaning device, characterized in that: include: A drainage member, the drainage member is arranged adjacent to the borehole, the drainage member has a drainage inlet and a drainage outlet, and is used to receive the coal slime discharged from the borehole; a grinding assembly, the grinding assembly comprising a first grinding member and a second grinding member, the first grinding member being adjacent to the drainage outlet so as to receive the coal slime discharged from the borehole, the first grinding member being connected to the second grinding member, the first grinding member and the second grinding member defining a grinding gap in a vertical direction, and at least one of the first grinding member and the second grinding member being movable so as to grind the coal slime passing through the grinding gap into powder; a collecting assembly, the collecting assembly comprising a first collecting member, the first collecting member being arranged adjacent to the second grinding member and being used for collecting coal slime flowing out of the second grinding member; A flushing assembly is connected to the grinding assembly and is used to introduce flushing liquid into the grinding gap.

2. The drilling coal slime cleaning device according to claim 1, characterized in that: The first grinding piece includes a first grinding body, the first grinding body has a first flow channel, the second grinding piece includes a second grinding body, the second grinding body has a second flow channel, the first flow channel and the second flow channel are both arranged at an angle, and the outer peripheral wall of the first grinding body and the wall surface of the second flow channel define the grinding gap.

3. The drilling coal slime cleaning device according to claim 2, characterized in that: The first grinding member also includes a first grinding portion, which is connected to the outer peripheral wall of the first grinding body and is placed in the grinding gap. The second grinding member also includes a second grinding portion, which is connected to the outer peripheral wall of the second grinding body and is placed in the grinding gap. The first grinding portion is movable along the circumference of the second grinding portion.

4. The drilling coal slime cleaning device according to claim 3, characterized in that: The grinding assembly further includes a grinding driving member, which is connected to the first grinding body and is used to drive the first grinding body to move and drive the first grinding portion to move along the circumference of the second grinding portion.

5. The drilling coal slime cleaning device according to claim 4, characterized in that: The grinding drive member comprises a driving body and a connecting portion, wherein an output shaft of the driving body is connected to an eccentric wheel, a first end of the connecting portion is connected to the first grinding body, and a second end of the connecting portion is adapted to the eccentric wheel.

6. The drilling coal slime cleaning device according to any one of claims 1 to 5, characterized in that: The collecting component also includes a second collecting piece, the first collecting piece is placed in the cavity of the second collecting piece, the side wall and the bottom wall of the first collecting piece are provided with filter holes, and the side wall of the first collecting piece is also provided with an overflow hole, and the overflow hole is located above the filter hole.

7. The drilling coal slime cleaning device according to claim 6, characterized in that: The collecting component further comprises an overflow member, wherein the overflow member is sleeved on the second collecting member, and a connecting hole is formed on a side wall of the second collecting member, wherein the connecting hole connects the cavity of the overflow member and the cavity of the second collecting member.

8. The drilling coal slime cleaning device according to claim 7, characterized in that: The communicating hole is located below the overflow hole.

9. The drilling coal slime cleaning device according to claim 8, characterized in that: The flushing assembly comprises a flushing inlet and a flushing outlet, wherein the flushing inlet is communicated with the cavity of the second collecting member, and the flushing outlet is communicated with the grinding gap.

10. The drilling coal slime cleaning device according to claim 9, characterized in that: The flow guide member comprises a first flow guide section and a second flow guide section which are connected to each other. The first flow guide section is arranged adjacent to the borehole, and a radial dimension of the first flow guide section gradually decreases from bottom to top.

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