Coal seam sampling device for coal mine exploration

Abstract

The invention discloses a coal seam sampling device for coal mine exploration, and relates to the technical field of coal seam sampling, the coal seam sampling device comprises a sampling rod body, the top of the sampling rod body is fixedly connected with a drill bit, the outer side of the sampling rod body is provided with a humidifying mechanism, and the humidifying mechanism is used for increasing the falling speed of dust generated during drilling. By adopting the humidifying mechanism, in the drilling process of the sampling rod body, under the cooperation of the lantern ring, the annular pipe and the auxiliary assembly, if a coal seam is normal, mist liquid sprayed by the spraying head can play a role in dust falling, the gravity of dust is increased, and the dust can fall down rapidly. When lignite and long flame coal are encountered, through spraying work on dust of the lignite and the long flame coal, the weight can be increased, the lignite and the long flame coal can fall down quickly, the probability of inhalation of workers can be reduced, the risk of explosion caused by dryness of the lignite and the long flame coal is effectively avoided by increasing the humidity of the lignite and the long flame coal, the defects in the prior art are overcome, and the safety of the device during sampling is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal seam sampling, in particular to a coal seam sampling device for coal mine exploration. BACKGROUND

[0002] Coal mine exploration refers to a systematic geological work of finding, identifying and evaluating underground coal resources by using various technical means, and the coal seam sampling device for coal mine exploration is a device for sending a small amount of representative coal sample obtained from the underground to a laboratory for analysis, and using the analysis results to represent the true situation of the large-scale underground coal seam.

[0003] The existing partial layer sampling device, when in use, performs drilling work through a drill bit, and when drilling, the top of the hollow drill rod is connected to an air compressor, and high-pressure air is continuously injected into the hole through the opening at the top of the drill bit, so that the coal powder generated during drilling is blown out of the hole from the annular space between the drill rod and the hole wall, when the hollow drill rod reaches the sampling area, the valve on the drilling machine is switched to change the ventilation pipeline, from "positive pressure blowing" to "negative pressure suction" in the hole, the coal powder and fragments at the bottom of the hole are sucked to the ground surface through the hollow drill rod and enter a special sample collector, thereby completing the sampling work.

[0004] Although the above-mentioned device can better complete the coal seam sampling work, in actual use, since the coal seam condition in the sampling area is unknown, if there is lignite or long flame coal in the sampling area, (the volatile component content is usually greater than 35%, and this type of coal has a low metamorphic degree and contains a large amount of easily volatile combustible gas), and when the sampling work is performed at the top of the roadway, the coal powder generated by the lignite or long flame coal will fall from top to bottom, resulting in a longer residence time in the roadway environment, which is more easily inhaled by the workers, is not conducive to the health of the workers, and even may cause an explosion hazard due to high temperature in the roadway, seriously affecting the safety of the sampling work. SUMMARY

[0005] Therefore, the present application provides a coal seam sampling device for coal mine exploration to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a coal seam sampling device for coal mine exploration, comprising a sampling rod body, a drill bit is fixedly connected to the top of the sampling rod body, a humidifying mechanism is arranged on the outer side of the sampling rod body for accelerating the falling speed of the dust generated during drilling;

[0007] The humidifying mechanism comprises a mounting plate, a water receiving pipe is fixedly connected to the mounting plate, a telescopic pipe is fixedly connected to one end of the water receiving pipe away from the mounting plate, a sleeve ring is rotatably connected to the outer surface of the sampling rod body, the telescopic pipe is fixedly connected to the top end of the sleeve ring, a connecting pipe is fixedly connected to the sleeve ring, an annular pipe is fixedly connected to one end of the connecting pipe away from the sleeve ring, a plurality of spray heads are fixedly connected to the annular pipe, the diameters of the annular pipe and the spray heads are smaller than the diameter of the drill bit, the humidifying mechanism comprises an auxiliary assembly, the auxiliary assembly is matched with the rotation of the sampling rod body to drive the annular pipe to swing back and forth.

[0008] Preferably, the auxiliary assembly comprises a sliding block, the sliding block is fixedly connected to the bottom of the annular pipe, the sliding block is slidably connected to the sleeve ring, a fixed block is fixedly connected to one end of the sleeve ring close to the annular pipe, a guide rod is fixedly connected to the fixed block, a return spring is sleeved on the outer surface of the guide rod, and the two ends of the return spring are fixedly connected to the sliding block and the fixed block respectively, a first magnetic block is fixedly connected to the outer surface of the sampling rod body, a second magnetic block is fixedly connected to the top of the first magnetic block, the magnetic poles of the first magnetic block and the second magnetic block are arranged to be attracted to each other, and when the sampling rod body rotates, the first magnetic block and the second magnetic block are matched to drive the annular pipe to rotate.

[0009] Preferably, the sliding block and the guide rod are both arranged in an arc shape to match the relative rotation between the sleeve ring and the annular pipe.

[0010] Preferably, the connecting pipe is arranged as a flexible pipe.

[0011] Preferably, the telescopic pipe is arranged as a rigid pipe to support and limit the sleeve ring.

[0012] Preferably, the spray heads are arranged in an inclined manner.

[0013] Preferably, the mounting plate is further provided with a collecting mechanism for collecting dust generated during drilling, the collecting mechanism comprises a plurality of connecting rods, each connecting rod is fixedly connected to one side of the mounting plate close to the sampling rod body, a collecting box is fixedly connected to one side of each connecting rod away from the mounting plate, the collecting box is sleeved with the sampling rod body, a discharge pipe is fixedly connected to the bottom of the collecting box, the discharge pipe is in communication with the collecting box, and the discharge pipe is inserted into the mounting plate.

[0014] Preferably, a plurality of convex blocks are fixedly connected to the top of the collecting box, and each convex block is arranged in a conical shape.

[0015] Preferably, a guide block is fixedly connected to the inner wall of the collecting box, which is used to guide the mixture in the collecting box to the top of the discharge pipe.

[0016] As preferred, the sleeve bottom is fixedly connected with a plurality of guide columns, each of which is inserted with the collecting box, for assisting supporting and guiding the sleeve when the sampling rod body travels.

[0017] Compared with the prior art, the coal seam sampling device for coal mine exploration has the following beneficial effects:

[0018] 1、The humidifying mechanism is arranged, so that the sampling rod body can spray mist from the spray head in the drilling process, which can play a dust reduction role, increase the gravity of dust, and make the dust fall rapidly under the cooperation of the sleeve, the annular pipe and the auxiliary assembly, and when lignite and long flame coal are encountered, the spraying of dust can not only increase the weight and make it fall rapidly, but also reduce the probability of inhalation by workers, increase the humidity, effectively avoid the risk of explosion due to dryness, overcome the shortcomings of the prior art, and improve the safety of the device during sampling.

[0019] 2、The spray head is arranged to be inclined, and the spray head is arranged at the top of the annular pipe, and the spray opening faces upward, so that the sprayed liquid can also play a role in wetting the drilling area, reducing the drilling resistance, and reducing the temperature during drilling through the wet mist, effectively avoiding the problem of overheating of the sampling rod body.

[0020] 3、The collecting mechanism is arranged, the collecting box can cover the drilling hole, the weight-increasing dust mixture can be collected, the coal mine dust can be effectively collected before entering the air in the tunnel, the risk of inhalation by workers is effectively reduced, and the risk of explosion of flammable dust of lignite and long flame coal is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective view of the present application;

[0022] Figure 2 is a partial perspective view of the present application; Figure 1

[0023] Figure 3 is a perspective view of the annular pipe of the present application;

[0024] Figure 4 is an enlarged view of A in the present application; Figure 3

[0025] Figure 5 is a structure view of the collecting mechanism of the present application.

[0026] In the drawings:

[0027] 100, sampling rod body; 101, drill bit;

[0028] ​​200. Humidification mechanism; 201. Mounting plate; 202. Water inlet pipe; 203. Telescopic pipe; 204. Collar; 205. Ring pipe; 206. Connecting pipe; 207. Spray head;

[0029] 211. Sliding block; 212. Fixed block; 213. Guide rod; 214. Return spring; 215. First magnetic block; 216. Second magnetic block;

[0030] 300. Collection mechanism; 301. Connecting rod; 302. Collection box; 303. Protrusion; 304. Guide block; 305. Discharge pipe;

[0031] 401. Guide column. Detailed Implementation

[0032] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, some features described in the examples may be combined in other examples.

[0033] like Figures 1 to 5 As shown, this embodiment provides a coal seam sampling device for coal mine exploration, including a sampling rod 100, a drill bit 101 fixedly connected to the top of the sampling rod 100, and a humidification mechanism 200 provided on the outside of the sampling rod 100 to accelerate the falling speed of dust generated during drilling.

[0034] The humidification mechanism 200 includes a mounting plate 201, a water inlet pipe 202 fixedly connected to the mounting plate 201, a telescopic pipe 203 fixedly connected to the end of the water inlet pipe 202 away from the mounting plate 201, a collar 204 rotatably connected to the outer surface of the sampling rod 100, the top end of the telescopic pipe 203 fixedly connected to the collar 204, a connecting pipe 206 fixedly connected to the collar 204, an annular pipe 205 fixedly connected to the end of the connecting pipe 206 away from the collar 204, and several spray heads 207 fixedly connected to the annular pipe 205. The diameters of the annular pipe 205 and the spray heads 207 are both smaller than the diameter of the drill bit 101. The humidification mechanism 200 includes an auxiliary component, which cooperates with the rotation of the sampling rod 100 to drive the annular pipe 205 to reciprocate.

[0035] The auxiliary assembly comprises a sliding block 211 fixedly connected to the bottom of the annular pipe 205, the sliding block 211 being in sliding connection with the collar 204, the collar 204 being fixedly connected with a fixed block 212 at one end close to the annular pipe 205, the fixed block 212 being fixedly connected with a guide rod 213, the guide rod 213 being sleeved with a return spring 214 on the outer surface, the two ends of the return spring 214 being fixedly connected with the sliding block 211 and the fixed block 212 respectively, the outer surface of the sampling rod body 100 being fixedly connected with a first magnetic block 215, the top of the first magnetic block 215 being fixedly connected with a second magnetic block 216, the first magnetic block 215 and the second magnetic block 216 being arranged with opposite magnetic poles, and the sampling rod body 100 being rotated to drive the annular pipe 205 to rotate through cooperation of the first magnetic block 215 and the second magnetic block 216.

[0036] Further, the sliding block 211 and the guide rod 213 are both arranged in an arc shape to cooperate with the relative rotation between the collar 204 and the annular pipe 205, thereby ensuring the smoothness during reciprocating rotation.

[0037] Further, the connecting pipe 206 is arranged as a flexible pipe, so that the collar 204 and the annular pipe 205 are rotated to cooperate with the rotation through deformation of the connecting pipe 206, thereby ensuring the smoothness during rotation.

[0038] Further, the telescopic pipe 203 is arranged as a rigid pipe to support and limit the collar 204, thereby preventing the collar 204 from being rotated synchronously with the sampling rod body 100.

[0039] The spray head 207 is arranged in an inclined manner, so that the spray direction is upward and outward, thereby being capable of performing spray work on the drilling top area and the coal powder falling area, and reducing the drilling resistance and the temperature during drilling through wet mist, thereby effectively avoiding the problem of overheating of the sampling rod body 100.

[0040] Optionally, the outer surface of the annular pipe 205 can be arranged in an inclined manner, which not only enables the spray head 207 to be inclined synchronously with the inclined surface, but also prevents the material from being left.

[0041] The implementation of the embodiment can increase the weight of the dust spray work, so as to make the dust fall quickly and reduce the probability of inhalation by the workers, and effectively avoid the risk of explosion due to dryness by increasing the humidity, thereby overcoming the shortcomings of the prior art and improving the safety of the device during sampling.

[0042] Further embodiments are described with reference to Figure 5As shown, the mounting plate 201 is further provided with a collection mechanism 300 for collecting dust generated during drilling, the collection mechanism 300 comprising a plurality of connecting rods 301, each connecting rod 301 being fixedly connected to the mounting plate 201 near the sampling rod body 100, the connecting rod 301 being fixedly connected with a collection box 302 at the side away from the mounting plate 201, the collection box 302 being sleeved with the sampling rod body 100, the collection box 302 being fixedly connected with a discharge pipe 305 at the bottom, the discharge pipe 305 being in communication with the collection box 302, and the discharge pipe 305 being inserted with the mounting plate 201.

[0043] Further, the collection box 302 is fixedly connected with a plurality of protrusions 303 at the top, each protrusion 303 being tapered to improve the friction with the top of the roadway.

[0044] Further, the collection box 302 is fixedly connected with a guide block 304 at the bottom of the inner wall, for guiding the mixture in the collection box 302 to the top of the discharge pipe 305, to better complete the discharge work.

[0045] Further, the sleeve ring 204 is fixedly connected with a plurality of guide columns 401 at the bottom, each guide column 401 being inserted with the collection box 302, for assisting the support and guidance of the sleeve ring 204 when the sampling rod body 100 advances, to reduce the support pressure of the telescopic pipe 203.

[0046] The implementation of the embodiment collects the mixed dust, so that the coal dust is effectively collected before entering the air in the roadway, not only effectively reducing the risk of inhalation by the staff, but also further reducing the risk of explosion of combustible dust of lignite and long flame coal.

[0047] The working principle of all the above embodiments is as follows:

[0048] Preparation, the sleeve ring 204 is rotatably connected with the sampling rod body 100, the sampling rod body 100 can drive the sleeve ring 204 to drill synchronously when drilling, and the sleeve ring 204 and the sampling rod body 100 can rotate relative to each other, and the annular pipe 205 is located above the sleeve ring 204, but the inner surface of the annular pipe 205 does not contact the outer surface of the sampling rod body 100, and the collection box 302 is sleeved on the outer surface of the sampling rod body 100, and the inner surface of the collection box 302 does not contact the outer surface of the sampling rod body 100, and the annular surface has a small gap.

[0049] In addition, after the humidification mechanism 200 and the collection mechanism 300 are installed with the sampling rod body 100, the bottom of the sampling rod body 100 can be connected with the corresponding drilling machine and air compressor, so that the subsequent drilling and sampling work is facilitated, and in use, one end of the water inlet pipe 202 penetrating through the mounting plate 201 is fixedly communicated with the output end of the infusion pump, and the liquid inlet end of the infusion pump is fixedly communicated with the liquid outlet tank, so that the liquid spraying work of the humidification mechanism 200 is ensured, and the discharge pipe 305 is communicated with the collection tank at the end away from the collection box 302, and the mounting plate 201 is fixedly installed with the ground or fixedly connected with the body of the drilling machine in use.

[0050] The working principle and beneficial effects of the humidification mechanism 200 are as follows:

[0051] When the device needs to explore and sample the roof of the roadway, the prepared device can be used, and in use, the infusion pump is started, and in the process of drilling of the sampling rod body 100 and the drill bit 101, the sampling rod body 100 moves synchronously with the sleeve ring 204 and the connecting belt to drive the annular pipe 205 to move, and the telescopic pipe 203 is elongated to ensure that the telescopic pipe 203 is outside the drill hole, at this time, the liquid in the liquid storage tank is sprayed out from the spray head 207 through the infusion pump, the telescopic pipe 203, the sleeve ring 204, the connecting pipe 206 and the water inlet pipe 202 in turn, to humidify the drilled dust.

[0052] Further, in the process of drilling of the sampling rod body 100, the rotation of the sampling rod body 100 will synchronously drive the first magnetic block 215 to rotate, and since the first magnetic block 215 and the second magnetic block 216 are arranged with opposite magnetic poles, when the first magnetic block 215 approaches the second magnetic block 216, the second magnetic block 216 and the annular pipe 205 will be driven to rotate by the attraction force, and since the reset spring 214 is in a normal state at the beginning, when the first magnetic block 215 drives the second magnetic block 216 and the annular pipe 205 to rotate by a proper distance, the elastic force of the reset spring 214 can be overcome at this time, and as the reset spring 214 continues to be compressed, the rebound force will change, so that the rebound force of the reset spring 214 is greater than the attraction force of the first magnetic block 215 and the second magnetic block 216, at this time, the reset spring 214 rebounds under the guidance of the guide rod 213 to push the sliding block 211 and the annular pipe 205 to rotate, so that the annular pipe 205 reciprocates under the cooperation of the first magnetic block 215, the second magnetic block 216 and the reset spring 214, and the spray head 207 reciprocates, thereby increasing the liquid spraying range of the spray head 207.

[0053] It should be noted that, with the cooperation of the first magnetic block 215, the second magnetic block 216 and the return spring 214, the annular tube 205 is driven to swing back and forth. When the return spring 214 rebounds, the sliding block 211 and the annular tube 205 may not immediately return to their original positions, but overall the annular tube 205 can still achieve the effect of swinging back and forth, which can ensure the increase of the spray range of the spray head 207.

[0054] Furthermore, by setting the collar 204 and its diameter to be smaller than that of the drill bit 101, the diameter of the borehole is also larger than that of the collar 204 and the annular tube 205. This ensures that the collar 204 and the annular tube 205 do not affect the movement of the sampling rod 100, and also maintains an appropriate distance between the collar 204 and the annular tube 205 and the borehole, thus ensuring that coal dust can fall into this space and guaranteeing the progress of the material discharge operation.

[0055] In addition, the humidification mechanism 200 is only used when the sampling rod 100 and the drill bit 101 are drilling. During sampling, the liquid discharge can be stopped to avoid affecting the quality of the sample.

[0056] This invention employs a humidification mechanism 200, which, during drilling, allows the sampling rod 100, in conjunction with the collar 204, annular pipe 205, and auxiliary components, to effectively reduce dust accumulation in normal coal seams by spraying mist from the spray head 207. This increases the weight of the dust particles, causing them to fall quickly. Furthermore, when encountering lignite or long-flame coal, the spraying of dust not only increases their weight, causing them to fall rapidly, but also reduces the probability of inhalation by workers. The increased humidity also effectively avoids the risk of explosion due to their dryness, overcoming the shortcomings of existing technologies and improving the safety of the sampling process.

[0057] In addition, by tilting the spray head 207 and placing it at the top of the annular tube 205 with its spray nozzle facing upwards, the liquid sprayed out can also moisten the drilling area, reducing drilling resistance. At the same time, the moist mist reduces the temperature during drilling, effectively preventing the sampling rod 100 from overheating.

[0058] The following explains the working principle and beneficial effects of the collection mechanism 300:

[0059] During the drilling of the sampling rod body 100, the collecting box 302 is located at the position of the drilling hole, covers the drilling hole, so that the dust and liquid sprayed by the spray head 207 fall from the drilling hole at the same time, and fall into the collecting box 302, and through the arrangement of the guide block 304, the mixture is guided to the feeding port position of the discharge pipe 305, so that it can be discharged from the discharge pipe 305, effectively preventing the problem of excessive accumulation of the mixture in the collecting box 302, and through the arrangement of the convex block 303, the friction between the collecting box 302 and the roadway roof can be increased, thereby improving the effect of the collecting box 302 when covering the drilling hole. Through the arrangement of the collecting mechanism 300, the collecting box 302 can collect the weight-increasing dust mixture, so that the coal mine dust can be effectively collected before entering the roadway air, not only effectively reducing the risk of inhalation by the staff, but also further reducing the risk of explosion of the combustible dust of lignite and long flame coal.

[0060] The above describes the embodiments of the present application, but the embodiments are not limited to the above specific embodiments, and the above specific embodiments are only illustrative and not restrictive. Those skilled in the art can make many forms under the inspiration of the embodiments, which are all within the protection scope of the embodiments.

Claims

1. A coal seam sampling device for coal mine exploration, comprising a sampling rod body (100), a drill bit (101) is fixedly connected to the top of the sampling rod body (100), characterized in that, The sampling rod body (100) is provided with a humidifying mechanism (200) outside, which is used for improving the falling speed of dust generated during drilling; The humidifying mechanism (200) comprises a mounting plate (201), a water receiving pipe (202) is fixedly connected to the mounting plate (201), a telescopic pipe (203) is fixedly connected to one end of the water receiving pipe (202) away from the mounting plate (201), a sleeve ring (204) is rotatably connected to the outer surface of the sampling rod body (100), the top end of the telescopic pipe (203) is fixedly connected to the sleeve ring (204), a connecting pipe (206) is fixedly connected to the sleeve ring (204), a ring-shaped pipe (205) is fixedly connected to one end of the connecting pipe (206) away from the sleeve ring (204), a plurality of spray heads (207) are fixedly connected to the ring-shaped pipe (205), the diameters of the ring-shaped pipe (205) and the spray heads (207) are smaller than the diameter of the drill bit (101), the humidifying mechanism (200) comprises an auxiliary assembly, the auxiliary assembly is matched with the rotation of the sampling rod body (100) to drive the ring-shaped pipe (205) to swing back and forth.

2. The coal bed sampling device for coal mine exploration of claim 1, wherein: The auxiliary assembly comprises a sliding block (211), the sliding block (211) is fixedly connected to the bottom of the ring-shaped pipe (205), the sliding block (211) is slidably connected to the sleeve ring (204), the sleeve ring (204) is fixedly connected to the fixed block (212) at one end close to the ring-shaped pipe (205), the fixed block (212) is fixedly connected to the guide rod (213), the guide rod (213) is sleeved with a return spring (214) on the outer surface, the two ends of the return spring (214) are fixedly connected to the sliding block (211) and the fixed block (212) respectively, the outer surface of the sampling rod body (100) is fixedly connected to a first magnetic block (215), the top of the first magnetic block (215) is fixedly connected to a second magnetic block (216), the magnetic poles of the first magnetic block (215) and the second magnetic block (216) are arranged to be attracted to each other, when the sampling rod body (100) rotates, the first magnetic block (215) and the second magnetic block (216) are matched to drive the ring-shaped pipe (205) to rotate.

3. The coal bed sampling device for coal mine exploration of claim 2, wherein: The sliding block (211) and the guide rod (213) are both arranged in an arc shape, which is used for matching the relative rotation between the sleeve ring (204) and the ring-shaped pipe (205).

4. The coal bed sampling device for coal mine exploration of claim 1, wherein: The connecting pipe (206) is arranged as a flexible pipe.

5. The coal seam sampling device for coal mine exploration according to claim 1, characterized in that: The telescopic pipe (203) is arranged as a rigid pipe, which is used for supporting and limiting the sleeve ring (204).

6. The coal bed sampling device for coal mine exploration of claim 1, wherein: The spray heads (207) are arranged in an inclined manner.

7. The coal seam sampling device for coal mine exploration of claim 1, characterized in that: The installation plate (201) is further provided with a collecting mechanism (300) for collecting dust generated during drilling, the collecting mechanism (300) comprises a plurality of connecting rods (301), each connecting rod (301) is fixedly connected to the installation plate (201) near the sampling rod body (100), the connecting rod (301) is fixedly connected with a collecting box (302) away from the installation plate (201), the collecting box (302) is sleeved with the sampling rod body (100), the bottom of the collecting box (302) is fixedly connected with a discharge pipe (305), the discharge pipe (305) is communicated with the collecting box (302), and the discharge pipe (305) is inserted with the installation plate (201).

8. The coal bed sampling device for coal mine exploration of claim 7, wherein: The top of the collecting box (302) is fixedly connected with a plurality of convex blocks (303), and each convex block (303) is conical.

9. The coal bed sampling device for coal mine exploration of claim 7, wherein: The inner wall bottom of the collecting box (302) is fixedly connected with a guide block (304), which is used for guiding the mixture in the collecting box (302) to the top feeding port of the discharge pipe (305).

10. The coal seam sampling device for coal mine exploration according to claim 7, characterized in that: The bottom of the sleeve ring (204) is fixedly connected with a plurality of guide columns (401), each guide column (401) is inserted with the collecting box (302), which is used for assisting the sleeve ring (204) in supporting and guiding when the sampling rod body (100) travels.

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