CN107524415B - Coal seam drilling dust collector and rig - Google Patents
Coal seam drilling dust collector and rig Download PDFInfo
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- CN107524415B CN107524415B CN201710315902.8A CN201710315902A CN107524415B CN 107524415 B CN107524415 B CN 107524415B CN 201710315902 A CN201710315902 A CN 201710315902A CN 107524415 B CN107524415 B CN 107524415B
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- rod assembly
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- 239000000428 dust Substances 0.000 title claims abstract description 91
- 238000005553 drilling Methods 0.000 title claims abstract description 77
- 239000003245 coal Substances 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 175
- 238000005507 spraying Methods 0.000 claims description 23
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 20
- 230000000694 effects Effects 0.000 description 16
- 230000008569 process Effects 0.000 description 16
- 239000007921 spray Substances 0.000 description 12
- 239000003595 mist Substances 0.000 description 7
- 239000002817 coal dust Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Abstract
The invention provides a coal seam drilling dust removing device and a drilling machine, which relate to the technical field of coal seam drilling construction.
Description
Technical Field
The invention relates to the technical field of coal seam drilling construction, in particular to a coal seam drilling dust removal device and a drilling machine.
Background
In the coal mine production process, a plurality of unsafe accident hidden dangers exist. One practical difficulty faced in current downhole coal mining processes is the problem of drilling soft coal seams. In the construction process, there are chain reactions such as borehole collapse, flying coal dust, fire or explosion caused by gas overrun.
In the prior art, a dust catcher is generally selected as a drilling dust removing device. The dust catcher is composed of three parts: hole packer, connecting pipe, dust remover. The hole packer mainly comprises a reaming bit, a reaming pipe, a tee joint, a sealing sleeve, a clamping head and the like. The connecting pipe adopts a rubber pipe with proper length according to the actual requirement of construction. The dust remover mainly comprises a water drain valve, a core tube, a vortex body, a water tank, a spray head, a volute, a slag discharge valve and the like. In the drilling process, a large amount of return air, gas and drill cuttings in the drill hole enter an air inlet pipe of the dust remover through the hole packer and the connecting pipe and then tangentially rotate from top to bottom after passing through the vortex body and the core pipe. Some coarse particle coal slag is sunk into the bottom of the tank in the vortex and is automatically discharged through an automatic slag discharge valve, so that the first screening type dry dust removal is completed. The other fine dust particles enter the water tank through the core tube, the volute and the nozzle along with the gas return air, and the dust material is dissolved into water through the water bath to carry out the water bath type dust removal for the second time. While the remaining gas and wind overflow along the upper outlet of the water tank. The gas is purified by twice dust removal.
However, the atomization space of the conventional dust catcher cannot reach all-around, and the effect is poor, so that coal dust is diffused.
Disclosure of Invention
The invention aims to provide a coal seam drilling dust removing device and a drilling machine, which are used for solving the technical problems that in the coal seam drilling construction process in the prior art, the atomization space of the dust removing device cannot reach all directions and the effect is poor.
The invention provides a coal seam drilling dust removal device which comprises a drill rod assembly and a jet assembly;
the drill rod assembly is provided with a water spraying hole, the spraying assembly is communicated with the drill rod assembly, and the spraying assembly is used for introducing water and wind into the drill rod assembly.
Further, the drill rod assembly comprises two drill rods and a dust removal diverter;
the dust removal flow divider is of a tubular structure with a hollow inside, two ends of the dust removal flow divider are respectively communicated with two drill rods, and the injection assembly is communicated with one of the drill rods;
the dust removal shunt is close to the inner wall diameter of the one end of jetting subassembly is greater than the inner wall diameter of the other end, be provided with the reposition of redundant personnel through-hole on the lateral wall of dust removal shunt, the opening orientation of reposition of redundant personnel through-hole the great one end of inner wall diameter of dust removal shunt.
Further, the spraying assembly comprises an air supply pipe and a water supply pipe;
one end of the air supply pipe is communicated with the drill rod assembly, and the other end of the air supply pipe is communicated with an external air storage device;
one end of the water supply pipe is communicated with the drill rod assembly, and the other end of the water supply pipe is communicated with an external water supply device.
Further, a water jet structure is arranged on the water supply pipe;
the water jet structure is a tubular structure with a hollow inside, one end of the water jet structure is communicated with the drill rod assembly, the other end of the water jet structure is communicated with the water supply pipe, and the diameter of the inner wall of the water jet structure, which is close to one end of the drill rod assembly, is smaller than that of the inner wall of the other end of the water jet structure.
Further, a drill bit in communication with an end of the drill rod assembly remote from the jetting assembly;
the drill bit is provided with a through hole.
Further, the injection assembly further comprises a connecting pipe and a three-way joint;
three joints of the three-way joint are respectively communicated with the air supply pipe, the water supply pipe and one end of the connecting pipe, and the other end of the connecting pipe is communicated with the drill rod assembly.
Further, an air pressure gauge is arranged on the air supply pipe;
and/or the air supply pipe is provided with a first valve, and the first valve is used for connecting or disconnecting the air supply pipe.
Further, a water pressure gauge is arranged on the water supply pipe;
and/or the water supply pipe is provided with a regulating valve, and the regulating valve is used for controlling the water flow in the water supply pipe;
and/or the water supply pipe is provided with a second valve, and the second valve is used for connecting or disconnecting the water supply pipe.
Further, the spraying component also comprises an air receiving pipe, a water receiving pipe, a compressed air self-rescue pipe, a standby air supply pipe, a water supply rescue pipe and a water pipe for cooling the drilling machine;
one end of the water receiving pipe is connected with one end of the air receiving pipe through a third valve, one end of the air supply pipe, which is far away from the drill rod assembly, is communicated with the air receiving pipe, and one end of the water supply pipe, which is far away from the drill rod assembly, is communicated with the water receiving pipe;
one end of the compressed air self-rescue tube and one end of the standby air supply tube are respectively communicated with the air receiving tube, one end of the water supply self-rescue tube and one end of the water pipe for cooling the drilling machine are respectively communicated with the water receiving tube, and valves are arranged on the compressed air self-rescue tube, the standby air supply tube, the water supply self-rescue tube and the water pipe for cooling the drilling machine.
The drilling machine provided by the invention comprises a power mechanism and the coal seam drilling dust removal device according to any one of the technical schemes;
the power mechanism is connected with the drill rod assembly and used for driving the drill rod assembly to rotate.
The invention provides a coal seam drilling dust removal device which comprises a drill rod assembly and a jet assembly, wherein a water spray hole is formed in the drill rod assembly, and the drill rod assembly is communicated with the jet assembly. In the use process, the spraying component is used for leading water and wind into the drill rod component, and the water is sprayed out through the water spraying holes to form mist under the action of wind pressure, so that the dust removal effect is achieved. Because the water spray hole is arranged on the drill rod assembly, the atomized space can cover the inside of the whole drill hole, the dust removal effect is better, the operation environment of a construction site is effectively improved, the possibility of coal dust combustion explosion is reduced, because fog particles sprayed out of the water spray hole moisten the wall of the coal hole, the coal body condensation force around the wall of the coal hole is improved, the occurrence of hole collapse accidents is effectively controlled, the success rate of drilling is improved, and the life safety of drilling staff is ensured. Meanwhile, in the use process, the coal seam drilling dust removing device is simple in operation procedure, small in size, light in weight, more convenient to install, more convenient to use and capable of effectively reducing the labor intensity of workers.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a coal seam drilling dust removing device and a drilling machine provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of a coal seam drilling dust removing device according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a drill rod assembly;
FIG. 4 is a schematic view of a dust removal diverter;
FIG. 5 is a schematic structural view of a spray assembly;
FIG. 6 is a schematic view of a water jet structure;
fig. 7 is a schematic view of the structure of the drill bit.
Icon: 1-a drill rod assembly; a 2-jet assembly; 3-a drill bit; 4-connecting an air pipe; 5-water receiving pipes; 6-a compressed air self-rescue tube; 7-standby air supply pipes; 8-a water supply rescue tube; 9-a water pipe for cooling the drilling machine; 10-a third valve; 11-valve; 12-water swivel; 13-gyrators; 14-feeding means; 15-a holder; 16-a frame; 21-water spraying holes; 22-an air supply pipe; 23-a water supply pipe; 24-connecting pipes; 25-tee joint; 26-a housing; 31-through holes; 32-blades; 101-a drill rod; 102-a dust removal diverter; 103-a shunt through hole; 221-wind pressure gauge; 222-a first valve; 231-water jet structure; 232-a water pressure gauge; 233-a regulating valve; 234-second valve.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
In the description of the present invention, it should be noted that unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Embodiment 1 and embodiment 2 are described in detail below with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of a coal seam drilling dust removing device and a drilling machine provided by an embodiment of the invention; fig. 2 is a schematic structural diagram of a coal seam drilling dust removing device according to an embodiment of the present invention; FIG. 3 is a schematic structural view of a drill rod assembly; FIG. 4 is a schematic view of a dust removal diverter; FIG. 5 is a schematic structural view of a spray assembly; FIG. 6 is a schematic view of a water jet structure; fig. 7 is a schematic view of the structure of the drill bit.
Example 1
As shown in fig. 1, the coal seam drilling dust removal device provided in this embodiment includes: drill rod assembly 1 and injection assembly 2, in particular:
the drill rod assembly 1 is provided with a water spraying hole 21, the spraying assembly 2 is communicated with the drill rod assembly 1, and the spraying assembly 2 is used for introducing water and wind into the drill rod assembly 1.
Wherein, the water spraying holes 21 can be one or more than two, and preferably, the water spraying holes 21 are provided in a plurality, so that the spraying range is larger and the dust removing effect is better.
Further, the drill rod assembly 1 may be provided with a water swivel 12, and the injection assembly 2 may be in communication with the drill rod assembly 1 via the water swivel 12.
The coal seam drilling dust removal device comprises a drill rod assembly 1 and a jet assembly 2, wherein a water spray hole 21 is formed in the drill rod assembly 1, and the drill rod assembly 1 is communicated with the jet assembly 2. In the use process, the spraying component 2 is used for introducing water and wind into the drill rod component 1, and the water is sprayed out through the water spraying holes 21 to form mist under the action of wind pressure, so that the dust removal effect is achieved. Because the water spray hole 21 is arranged on the drill rod assembly 1, the atomized space can cover the inside of the whole drilling hole, the dust removal effect is better, the operation environment of a construction site is effectively improved, the possibility of coal dust combustion explosion is reduced, because fog particles sprayed out of the water spray hole 21 moisten the wall of the coal hole, the coal body coagulation force around the wall of the coal hole is improved, the occurrence of hole collapse accidents is effectively controlled, the success rate of drilling holes is improved, and the life safety of drilling staff is ensured. Meanwhile, in the use process, the coal seam drilling dust removing device is simple in operation procedure, small in size, light in weight, more convenient to install, more convenient to use and capable of effectively reducing the labor intensity of workers.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, further, based on the above embodiment, the drill rod assembly 1 includes two drill rods 101 and a dust removal diverter 102, specifically, the dust removal diverter 102 is a hollow tubular structure, two ends of the dust removal diverter 102 are respectively communicated with the two drill rods 101, the injection assembly 2 is communicated with one of the drill rods 101, the diameter of the inner wall of the dust removal diverter 102 near one end of the injection assembly 2 is larger than that of the other end, a diversion through hole 103 is provided on the side wall of the dust removal diverter 102, and the opening of the diversion through hole 103 faces to the end with the larger diameter of the inner wall of the dust removal diverter 102.
Wherein dust removal diverter 102 is threadably coupled to drill pipe 101.
Further, the dust removal diverter 102 may be one or more than two. In the use process, a plurality of dust removal shunts 102 can be additionally arranged according to the content of coal mine dust in a drilling hole, and two ends of each dust removal shunt 102 are respectively communicated with two drill rods 101, so that the plurality of drill rods 101 are sequentially communicated by using the dust removal shunts 102, and the purpose of dust removal is achieved.
Further, 3 diversion through holes 103 are uniformly arranged on the dust removal diverter 102 in the radial direction. Preferably, the diameter of the shunt through hole 103 is 2mm, and when the aperture is too large, the amount of gas blown out from the shunt through hole 103 and the pressure of the gas are reduced to some extent, so that the atomization effect is affected, and the dust removal effect is not obvious when the aperture is too small, therefore, through multiple tests, when the diameter of the shunt through hole 103 is 2mm, the diameter of the shunt through hole 103 is most reasonable, and the dust removal effect is better when water and wind are sprayed out.
Further, the opening of the flow dividing through hole 103 faces the end of the dust removing flow divider 102 having the larger diameter inner wall, and preferably, the inclination angle of the flow dividing through hole 103 may be 45 ° from the horizontal direction. The mist gas is discharged outwards through the diversion through holes 103 when the inclination angle is designed to be 45 degrees, and meanwhile, the processing of the diversion through holes 103 is easier.
Further, the number of the drill rods 101 can be two or more than three, the drill rods 101 can be directly communicated with each other through threads, and one or more than two dust removal shunts 102 can be additionally arranged according to the requirements of site conditions.
In this embodiment, the dust removal diverter 102 is disposed in the middle of two drill pipes 101, which can achieve continuous dust removal during drilling. During drilling, water and wind supplied by the jetting assembly 2 pass through the dust removal diverter 102, enter from the inner wall with the larger diameter of the dust removal diverter 102, pass into the next drill pipe 101 from the inner wall with the smaller diameter, and part of the water and wind are jetted out from the diverter through hole 103. Because the diameter of the dust removal flow divider 102 is changed, the inside of the dust removal flow divider 102 generates pressure, water and wind form water mist when being sprayed out of the flow division through hole 103, the water mist can catch and adsorb dust particles in a drilled hole, so that the purpose of dust fall and the dust removal effect are achieved, meanwhile, coal dust becomes pasty after being atomized, the coal coagulation force around the hole wall is improved, the hole wall is uniformly protected through the rotation of the drill rod 101 in the drilling process, and thus the hole collapse can be effectively controlled or reduced.
As shown in fig. 1, 2 and 5, further, the injection assembly 2 includes a supply pipe 22 and a supply pipe 23, and specifically, one end of the supply pipe 22 is communicated with the drill rod assembly 1, the other end is communicated with an external air storage device, and one end of the supply pipe 23 is also communicated with the drill rod assembly 1, and the other end is communicated with an external water supply device.
The materials of the air supply pipe 22 and the water supply pipe 23 may be various, for example: metal, plastic or composite tubes, etc.
In this embodiment, during the drilling process, the air supply pipe 22 and the water supply pipe 23 respectively introduce air and water from the external air storage device and the water supply device into the drill rod assembly 1.
As shown in fig. 1, 2, 5 and 6, further, on the basis of the above embodiment, the water supply pipe 23 is provided with a water jet structure 231, specifically, the water jet structure 231 is a tubular structure with a hollow interior, one end of the water jet structure 231 is communicated with the drill rod assembly 1, the other end is communicated with the water supply pipe 23, and the diameter of the inner wall of the water jet structure 231 near one end of the drill rod assembly 1 is smaller than that of the inner wall of the other end.
Wherein one end of the water jet structure 231 may be in communication with the drill rod assembly 1 through a high pressure pipe.
Further, the other end of the water jet structure 231 may be connected to the water supply pipe 23 in various manners, for example: threaded connections, welding, flanged connections, socket connections, grooved connections, and the like.
In this embodiment, the diameter of the inner wall of the water jet structure 231 on the water supply pipe 23 near one end of the drill rod assembly 1 is smaller than the diameter of the inner wall at the other end. During the water supply, water enters from the larger diameter end and passes into the drill rod assembly 1 from the smaller diameter end. Due to the variation of the diameter of the water jet structure 231, the inside of the water jet structure 231 generates pressure, so that the water body is ejected into the drill rod assembly 1 at a high speed from the end of the water jet structure 231 with the smaller diameter.
As shown in fig. 1, 2 and 7, on the basis of the above embodiment, the coal seam drilling dust removal device further includes a drill bit 3, the drill bit 3 is communicated with one end of the drill rod assembly 1 away from the injection assembly 2, and a through hole 31 is further provided in the drill bit 3.
Wherein three blades 32 may be provided on the drill bit 3, and each blade 32 is provided with a through hole 31.
Further, and preferably, the diameter of the through hole 31 is 5mm, and the opening thereof is directed toward one end of the spray assembly 2, and the inclination angle of the through hole 31 may be 45 ° from the horizontal. Because when the aperture is too big, the gas volume and the gas pressure that blow out from drill bit 3 reduce to some extent, have influenced the holistic discharge effect of drill chip, and the aperture is too little again to the secondary dust fall effect that the in-process of drill chip discharge played in the drilling is unobvious, consequently, through many experiments, when the diameter of through-hole 31 selects 2mm most reasonable, this kind of setting can let water and wind blowout time, and the dust removal effect is better. The processing of the through hole 31 is also made easier by facilitating the outward evacuation of the mist through the through hole 31 when the inclination is designed to 45 deg. and blowing out the drill cuttings into the bore hole.
In this embodiment, the drill bit 3 is provided with a through hole 31, and during drilling, wind provided by the jetting assembly 2 can be jetted out of the through hole 31, so that drilled drill cuttings can be blown out of the drilled hole. Because the jetting assembly 2 also provides water, the wind sprayed out of the through holes 31 can also play a role in wetting the hole wall, so that the coal body coagulation force around the hole wall is improved, the occurrence of hole collapse accidents is effectively controlled, the success rate of drilling is improved, and the life safety of drilling staff is ensured.
As shown in fig. 1, 2 and 5, further, the injection assembly 2 further includes a connection pipe 24 and a three-way joint 25, specifically, three joints of the three-way joint 25 are respectively communicated with the air supply pipe 22, the water supply pipe 23 and one end of the connection pipe 24, and the other end of the connection pipe 24 is communicated with the drill rod assembly 1.
Wherein, can be provided with water pigtail 12 between connecting pipe 24 and the drilling rod subassembly 1, connecting pipe 24 can be connected with drilling rod subassembly 1 through water pigtail 12.
Further, the material of the connecting tube 24 may be various, for example: metal, plastic or composite tubes, etc. Preferably, the connecting tube 24 is a high pressure hose. This arrangement allows the connection tube 24 to be moved and connected more conveniently and to meet the pressure requirements of the jetting assembly 2 when jetting.
Further, the spraying assembly 2 may further include a housing 26, where the air supply pipe 22, the water supply pipe 23, the three-way joint 25, and other structures may be disposed inside the housing 26, where the housing 26 protects the internal structure.
In this embodiment, the connection pipe 24 is in communication with the drill rod assembly 1, and the three-way joint 25 can connect the water supply pipe 23 of the air supply pipe 22 and the connection pipe 24. During use, water and wind can be more conveniently supplied to the drill rod assembly 1, and the relative positions of the jetting assembly 2 and the drill rod assembly 1 can be adjusted at will.
As shown in fig. 1, 2 and 5, further, based on the above embodiment, the air pressure gauge 221 is provided on the air supply pipe 22, and/or the first valve 222 is provided on the air supply pipe 22, where the first valve 222 is used to connect or disconnect the air supply pipe 22.
The wind pressure gauge 221 may be of various kinds, for example: an indication type pressure gauge, an electrified signal control type pressure gauge, and the like.
Further, the first valve 222 is a shut-off valve, which is used to turn on or off the medium in the pipeline.
Further, the air supply pipe 22 may be further provided with a pressure regulating valve, so that a user can control the air pressure of the air supply through the pressure regulating valve.
In the present embodiment, when the wind pressure gauge 221 is disposed on the wind supply pipe 22, the wind pressure gauge 221 measures and indicates a pressure value higher than the environment during the wind supply process; when the air supply pipe 22 is provided with the first valve 222, the first valve 222 can be connected or disconnected with the air supply pipe 22 for supplying air in the air supply process; when the air pressure gauge 221 and the first valve 222 are disposed on the air supply pipe 22, the air pressure gauge 221 can measure and indicate a pressure value higher than the environment, and the first valve 222 can connect or disconnect the air supply of the air supply pipe 22.
As shown in fig. 1, 2 and 5, further, the water supply pipe 23 is provided with a water pressure gauge 232 in the above embodiment; and/or, the water supply pipe 23 is provided with a regulating valve 233, and the regulating valve 233 is used for controlling the water flow in the water supply pipe 23; and/or, the water supply pipe 23 is provided with a second valve 234, and the second valve 234 is used for connecting or disconnecting the water supply pipe 23.
Wherein, the scale mark on the regulating valve 233 can provide reference data for the next use. In this embodiment, during the water supply, water flows through the second valve 234, the water pressure gauge 232 and the regulator valve 233 into the drill pipe assembly 1. The second valve 234 may be connected to or disconnected from the water supply pipe 23, the water pressure gauge 232 is used for measuring the pressure value of the water, and the regulating valve 233 may control the water flow.
Because the first valve 222 and the second valve 234 are arranged, the first valve 222 can be connected with or disconnected from the air supply pipe 22 for supplying air, and the second valve 234 can be connected with or disconnected from the water supply pipe 23 for supplying water, therefore, when sparks are generated in a drilling hole, the air supply of the first valve 222 can be closed in time, and meanwhile, the second valve 234 is opened for supplying water, so that fire accidents such as fire in the drilling hole can be effectively prevented, and the life and property safety of people can be ensured.
As shown in fig. 1 and 5, further, on the basis of the above embodiment, the injection assembly 2 further includes a wind receiving pipe 4, a water receiving pipe 5, a compressed air self-rescue pipe 6, a standby wind supplying pipe 7, a water supplying and rescue pipe 8 and a water pipe 9 for cooling the drilling machine, specifically, one end of the wind receiving pipe 5 and one end of the wind receiving pipe 4 are connected through a third valve 10, one end of the wind supplying pipe 22, which is far away from the drill rod assembly 1, is communicated with the wind receiving pipe 4, and one end of the water supplying pipe 23, which is far away from the drill rod assembly 1, is communicated with the water receiving pipe 5.
And, one end of the compressed air self-rescue tube 6 and one end of the standby air supply tube 7 are respectively communicated with the air receiving tube 4, one end of the water supply self-rescue tube 8 and one end of the drill cooling water tube 9 are respectively communicated with the water receiving tube 5, and valves 11 are respectively arranged on the compressed air self-rescue tube 6, the standby air supply tube 7, the water supply self-rescue tube 8 and the drill cooling water tube 9, and the valves 11 are used for connecting or cutting off media in the pipeline.
The third valve 10 is a shut-off valve, which serves to switch on or off the medium in the line.
Further, the materials of the air receiving pipe 4, the water receiving pipe 5, the compressed air self-rescue pipe 6, the standby air supply pipe 7, the water supply rescue pipe 8 and the water pipe 9 for cooling the drilling machine can be various, for example: metal pipe, plastic pipe and composite pipe.
In this embodiment, in the use process, when water supply rescue is needed, the valve 11 can be opened to enable water to be sprayed out of the water supply rescue pipe 8, when an external device needs air supply, the standby air supply pipe 7 can be communicated with external equipment, the water supply pipe 9 for cooling the drilling machine provides water for cooling the drilling machine, and the water supply rescue pipe 8 and the compressed air self-rescue pipe 6 are danger avoiding facilities so as to provide water and wind under the condition of dangerous situations.
Example 2
As shown in fig. 1, on the basis of the above embodiment, further, this embodiment provides a drilling machine, including a power mechanism and the coal seam drilling dust removal device in embodiment 1, specifically:
the power mechanism is connected with the drill rod assembly 1 and is used for driving the drill rod assembly 1 to rotate.
The power mechanism may include a gyrator 13, a feeding device 14, a gripper 15, and the like.
Further, the gyrator 13 can drive the drill rod assembly 1 to revolve and guide the direction of the drill rod assembly 1, and provide torque and rotating speed to realize angle change. The feeding device 14 enables feeding and pulling out of the drill rod assembly 1. The gripper 15 is able to complete the clamping of the drill rod assembly 1.
Further, the drilling rig may also include an air compressor. The air compressor communicates with the air pipe 4 for providing pressure to the air pipe 4 for rapid injection of wind and water into the drill pipe assembly 1.
Further, the drilling machine may further comprise a frame 16, the frame 16 being arranged at the lower end of the drill rod assembly 1. During use, the frame 16 serves to support the drill rod assembly 1.
In this embodiment, the drilling machine comprises a power mechanism and a coal seam drilling dust removal device. In the use process, the power mechanism can provide power for the drill rod assembly 1 to drive the drill rod assembly to rotate for drilling. The spraying component 2 is used for introducing water and wind into the drill rod component 1, and the water is sprayed out through the water spraying holes 21 to form mist under the action of wind pressure, so that the dust removal effect is achieved. Because the water spray hole 21 is arranged on the drill rod assembly 1, the atomized space can cover the inside of the whole drilling hole, the dust removal effect is better, the operation environment of a construction site is effectively improved, the possibility of coal dust combustion explosion is reduced, because fog particles sprayed out of the water spray hole 21 moisten the wall of the coal hole, the coal body coagulation force around the wall of the coal hole is improved, the occurrence of hole collapse accidents is effectively controlled, the success rate of drilling holes is improved, and the life safety of drilling staff is ensured. Meanwhile, in the use process, the coal seam drilling dust removing device is simple in operation procedure, small in size, light in weight, more convenient to install, more convenient to use and capable of effectively reducing the labor intensity of workers.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The coal seam drilling dust removal device is characterized by comprising a drill rod assembly (1) and a jet assembly (2);
the drill rod assembly (1) is provided with a water spraying hole (21), the spraying assembly (2) is communicated with the drill rod assembly (1), and the spraying assembly (2) is used for introducing water and wind into the drill rod assembly (1);
the drill rod assembly (1) comprises two drill rods (101) and a dust removal diverter (102);
the dust removal flow divider (102) is of a tubular structure with a hollow inside, two ends of the dust removal flow divider (102) are respectively communicated with the two drill rods (101), and the injection assembly (2) is communicated with one of the drill rods (101);
the diameter of the inner wall of the dust removal diverter (102) close to one end of the injection assembly (2) is larger than that of the inner wall of the other end, a diversion through hole (103) is formed in the side wall of the dust removal diverter (102), and an opening of the diversion through hole (103) faces to one end with larger inner wall diameter of the dust removal diverter (102);
the spraying assembly (2) comprises a wind supply pipe (22) and a water supply pipe (23);
one end of the air supply pipe (22) is communicated with the drill rod assembly (1), and the other end of the air supply pipe is communicated with an external air storage device;
one end of the water supply pipe (23) is communicated with the drill rod assembly (1), and the other end of the water supply pipe is communicated with an external water supply device;
the jet assembly (2) further comprises an air receiving pipe (4), a water receiving pipe (5), a compressed air self-rescue pipe (6), a standby air supply pipe (7), a water supply rescue pipe (8) and a water pipe (9) for cooling the drilling machine;
one end of the water receiving pipe (5) is connected with one end of the air receiving pipe (4) through a third valve (10), one end of the air supply pipe (22) away from the drill rod assembly (1) is communicated with the air receiving pipe (4), and one end of the water supply pipe (23) away from the drill rod assembly (1) is communicated with the water receiving pipe (5);
one end of the compressed air self-rescue tube (6) and one end of the standby air supply tube (7) are respectively communicated with the air receiving tube (4), one end of the water supply rescue tube (8) and one end of the drilling machine cooling water tube (9) are respectively communicated with the water receiving tube (5), and the compressed air self-rescue tube (6), the standby air supply tube (7), the water supply rescue tube (8) and the drilling machine cooling water tube (9) are respectively provided with valves (11).
2. The coal seam drilling dust removal device according to claim 1, wherein a water jet structure (231) is arranged on the water supply pipe (23);
the water jet structure (231) is a tubular structure with a hollow inside, one end of the water jet structure (231) is communicated with the drill rod assembly (1), the other end of the water jet structure is communicated with the water supply pipe (23), and the diameter of the inner wall of the water jet structure (231) close to one end of the drill rod assembly (1) is smaller than that of the inner wall of the other end.
3. The coal seam drilling dust removal device of claim 1, further comprising a drill bit (3) in communication with an end of the drill rod assembly (1) remote from the jetting assembly (2);
the drill bit (3) is provided with a through hole (31).
4. The coal seam drilling dust removal device of claim 1, wherein the injection assembly (2) further comprises a connecting pipe (24) and a three-way joint (25);
three joints of the three-way joint (25) are respectively communicated with the air supply pipe (22), the water supply pipe (23) and one end of the connecting pipe (24), and the other end of the connecting pipe (24) is communicated with the drill rod assembly (1).
5. The coal seam drilling dust removal device according to claim 1, wherein an air pressure gauge (221) is arranged on the air supply pipe (22);
and/or, a first valve (222) is arranged on the air supply pipe (22), and the first valve (222) is used for connecting or disconnecting the air supply pipe (22).
6. The coal seam drilling dust removal device according to claim 1, wherein a water pressure gauge (232) is arranged on the water supply pipe (23);
and/or, a regulating valve (233) is arranged on the water supply pipe (23), and the regulating valve (233) is used for controlling the water flow in the water supply pipe (23);
and/or, a second valve (234) is arranged on the water supply pipe (23), and the second valve (234) is used for connecting or disconnecting the water supply pipe (23).
7. A drilling machine, characterized by comprising a power mechanism and the coal seam drilling dust removal device according to any one of claims 1-6;
the power mechanism is connected with the drill rod assembly (1) and is used for driving the drill rod assembly (1) to rotate.
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| CN201621246081 | 2016-11-21 | ||
| CN2016212460814 | 2016-11-21 |
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| CN107524415B true CN107524415B (en) | 2024-01-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109779545A (en) * | 2019-01-18 | 2019-05-21 | 中国矿业大学 | A kind of closed dust pelletizing system of coal mine down-hole drilling and method |
| CN110230477A (en) * | 2019-06-25 | 2019-09-13 | 临沂矿业集团菏泽煤电有限公司 | Hydraulic drill rig for coal mine dust-extraction unit |
| CN110541728B (en) * | 2019-10-14 | 2024-03-15 | 中煤新集能源股份有限公司 | Wind-water pumping linkage device for guaranteeing safe construction of drilling |
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