LU504495B1 - Geological drilling rig for coal mining - Google Patents
Geological drilling rig for coal mining Download PDFInfo
- Publication number
- LU504495B1 LU504495B1 LU504495A LU504495A LU504495B1 LU 504495 B1 LU504495 B1 LU 504495B1 LU 504495 A LU504495 A LU 504495A LU 504495 A LU504495 A LU 504495A LU 504495 B1 LU504495 B1 LU 504495B1
- Authority
- LU
- Luxembourg
- Prior art keywords
- barrel
- piston
- rotating shaft
- drill pipe
- blocking
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 23
- 239000003245 coal Substances 0.000 title claims abstract description 18
- 238000005065 mining Methods 0.000 title claims abstract description 16
- 230000000903 blocking effect Effects 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 238000004140 cleaning Methods 0.000 claims description 22
- 239000000428 dust Substances 0.000 abstract description 45
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 abstract description 4
- 230000007480 spreading Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
- E21B21/015—Means engaging the bore entrance, e.g. hoods for collecting dust
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
Abstract
The invention relates to the field of drilling, and particularly discloses a geological drilling rig for coal mining. The geological drilling rig for coal mining includes a drill pipe. A gas inlet channel is arranged in the drill pipe. The drill pipe is sleeved with an annular blocking barrel. The drill pipe is sleeved with an annular inner barrel. The inner barrel is located on an inner side of the blocking barrel, and a bottom of the inner barrel is higher than a bottom of the blocking barrel. The drill pipe is rotatably connected to the inner barrel and vertically slidable relative to the inner barrel. At least two inner cavities are arranged between the sleeve and the blocking barrel along a circumferential direction. A piston is arranged in each of the inner cavity. Each of the pistons forms a sliding seal with the blocking barrel and the inner barrel. A collecting cavity is formed below the piston, and a pushing member for driving the piston to slide vertically is arranged above the piston. The blocking barrel is provided with a discharge port communicating with the collecting cavity, and the blocking barrel is provided with a sealing cover for sealing the discharge port. The geological drilling rig for coal mining in the invention can collect debris and dust to prevent a large amount of dust from spreading into air, leading to degradation of air quality or damage to the operator.
Description
GEOLOGICAL DRILLING RIG FOR COAL MINING LU504495
FIELD OF TECHNOLOGY
[0001] The invention relates to the field of drilling, and particularly to a geological drilling rig for coal mining.
[0002] In the process of coal mine drilling, it is necessary to use a drilling machine to make holes. Currently, a commonly used drilling machine typically includes a drill pipe and a driving structure for driving the drill pipe to rotate. The bottom of the drill pipe is provided with a drill bit, and the drill bit drills downward to create a hole. In the drilling process, debris and dust are formed constantly. In order to remove the debris and dust from the hole, a typical method 1s to introduce water or high-pressure gas into the hole, such that the debris and dust are discharged from the upper end of the hole along with the upward flow of water or gas. While drilling in a soft coal seam, only high-pressure gas can be used to blow out the debris and dust. However, the debris and dust that are blown out from the upper end of the hole will flow with the gas and finally spread into the air, which leads to degradation of air quality. In addition, the dust in the air is easily inhaled by the operator, causing damage to the operator's health.
[0003] An object of the invention 1s to provide a geological drilling rig for coal mining so as to prevent a large amount of dust from spreading into air, leading to degradation of air quality or damage to the operator.
[0004] In order to achieve the above object, the invention adopts the following technical solutions: the geological drilling rig for coal mining includes a drill pipe. À gas inlet channel is arranged in the drill pipe. The drill pipe is sleeved with an annular blocking barrel. The drill pipe is sleeved with an annular inner barrel. The inner barrel is located on an inner side of the blocking barrel, and a bottom of the inner barrel is higher than a bottom of the blocking barrel.
The drill pipe is rotatably connected to the inner barrel and vertically slidable relative to the inner barrel. At least two inner cavities are arranged between the sleeve and the blocking barrel along a circumferential direction. A piston is arranged in each of the inner cavity. Each of the 1/12 pistons forms a sliding seal with the blocking barrel and the inner barrel. A collecting cavity $150 4495 formed below the piston, and a pushing member for driving the piston to slide vertically is arranged above the piston. The blocking barrel is provided with a discharge port communicating with the collecting cavity, and the blocking barrel is provided with a sealing cover for sealing the discharge port.
[0005] This solution has the following beneficial effects:
[0006] 1. In this solution, the inner barrel is higher than the bottom of the blocking barrel, and the collecting cavity below the piston communicates with the hole formed by the drill pipe.
When high-pressure gas enters the hole from the gas inlet channel, the gas flow mixed with debris and dust enters the collecting cavity, which prevents a large amount of debris and dust from entering the air and leading to degradation of air quality and can ensure the operator's health.
[0007] 2. When the piston slides upward, the space in the collecting cavity increases and can contain the incoming high-pressure gas, debris and dust. Moreover, before the high-pressure gas enters, there is a small amount of gas in the collecting cavity. This can avoid an excessive pressure in the collecting cavity after the high-pressure gas enters, which leads to leakage of the excessive gas and dust in the collecting cavity from between the inner barrel and the drill pipe, so that the dust can be collected effectively.
[0008] Further, a bottom of the collecting cavity is provided with a guide bottom plate, and an end of the guide bottom plate close to the blocking barrel is lower than an end close to the drill pipe.
[0009] This solution has the following beneficial effects: the guide bottom plate guides the incoming debris and dust and makes the debris and dust slide to the side close to the discharge port, so that the debris and dust can be taken out from the discharge port.
[0010] Further, a top of the blocking barrel is provided with an annular top plate. The top plate is fixed to the blocking barrel and the inner barrel. A water storage cavity is formed between the piston, the top plate, the blocking barrel and the inner barrel. The water storage cavity communicates with a water inlet pipe. A nozzle communicating with the water storage cavity is fixed to a bottom of the piston.
[0011] This solution has the following beneficial effects: when the piston slides upward, the space in the water storage cavity decreases, and the pressure in the water storage cavity increases, 2/12 so that water in the water storage cavity can be sprayed out from the nozzle to wet the debris and, 504495 dust collected in the collecting cavity, and the wetted dust becomes heavier and cannot easily fly into the air, thereby further preventing the dust from spreading into the air.
[0012] Further, the nozzle is located on a side of the piston away from the drill pipe.
[0013] This solution has the following beneficial effects: after the debris enters the collecting cavity along with the gas, it may easily hit against the side wall of the collecting cavity. The nozzle in this solution is far away from the debris just blown out of the hole, which can prevent the nozzle from being damaged.
[0014] Further, a rotating shaft and a plurality of push plates are vertically arranged in the collecting cavity. An upper end of the rotating shaft runs through the piston and the top plate.
The rotating shaft forms a sliding seal with the piston and is rotatably connected to the top plate.
A rotating member for driving the rotating shaft to rotate is connected to the upper end of the rotating shaft. The plurality of push plates are fixed to the rotating shaft along a circumferential direction of the rotating shaft.
[0015] This solution has the following beneficial effects: in this solution, the rotating push plates can push the debris and dust collected at the bottom of the collecting cavity and make the debris and dust fall out of the discharge port more quickly under the centrifugal action, so that the wetted dust can fall out automatically, which prevents the storage of excessive dust in the collecting cavity, resulting in the newly generated debris and dust not being able to enter the collecting cavity.
[0016] Further, the guide bottom plate is provided with a limit slot facing the rotating shaft, and a lower end of the rotating shaft is located in the limit slot and rotatably connected to the limit slot.
[0017] This solution has the following beneficial effects: the limit slot can limit the position of the rotating shaft, thereby preventing the rotating shaft from deviation.
[0018] Further, a cleaning cavity is arranged in the piston. A bottom of the cleaning cavity is provided with a cleaning channel. A lower end of the cleaning channel faces the rotating shaft.
The cleaning cavity communicates with a pump body, and the pump body communicates with the water storage cavity.
[0019] This solution has the following beneficial effects: when the piston slides downward, the pump body can introduce water in the water storage cavity into the cleaning cavity, so that the 3/12 water flows out from the lower end of the cleaning channel and flushes the rotating shaft, whiçh 50 4495 prevents the dust from adhering to the lower end of the rotating shaft, thereby preventing the dust from being stuck between the piston and the rotating shaft and from inhibiting the downward slide of the piston.
[0020] FIG 1 is a front vertical sectional view of Embodiment 1 of the invention; and
[0021] FIG 2 is a sectional view of FIG. 1 taken along line A-A.
[0022] The following is a further detailed description by way of specific implementations.
[0023] Reference numerals in the accompanying drawings of the Description include: blocking barrel 1, discharge port 11, sealing cover 12, baffle 13, fixing portion 14, fixing hole 15, collecting cavity 2, guide bottom plate 21, rotating shaft 3, push plate 31, rotating member 32, drill pipe 4, gas inlet channel 41, inner barrel 5, limit block 51, piston 6, cleaning cavity 61, cleaning channel 62, water storage cavity 7, pushing member 8.
[0024] Embodiment 1
[0025] A geological drilling rig for coal mining, as shown in FIG. 1, includes a drill pipe 4, a blocking barrel 1, an inner barrel 5 and a top plate. The drill pipe 4 1s arranged vertically. À gas inlet channel 41 extending along an axial direction of the drill pipe 4 1s arranged in the drill pipe 4. À lower end of the gas inlet channel 41 runs through a side wall of the drill pipe 4. In practical implementation, the gas inlet channel 41 may be communicate with an outside pipe by a rotary joint, so that high-pressure gas can be introduced into the gas inlet channel 41. The blocking barrel 1, the inner barrel 5 and the top plate are all annular. The inner barrel 5 is sleeved on the drill pipe 4, and an inner diameter of the inner barrel S is greater than a diameter of the drill pipe 4, so the drill pipe 4 can rotate relative to the inner barrel 5 and slide vertically. An inner diameter of the blocking barrel 1 is greater than an outer diameter of the inner barrel 5. The blocking barrel 1 is sleeved on the inner barrel 5. The top plate is located above the blocking barrel 1 and the inner barrel 5, and the top plate, the blocking barrel 1 and the inner barrel 5 are integrally formed. In this embodiment, a lower end of the inner barrel 5 is higher than a lower end of the blocking barrel 1. As shown in FIG 2, four baffles 13 are uniformly soldered between 4/12 the blocking barrel 1 and the inner barrel 5 along a circumferential direction. The four baffles 50 4495 divide the space between the inner barrel 5 and the blocking barrel 1 into four inner cavities.
Four fixing portions 14 are soldered to a bottom of the blocking barrel 1 along the circumferential direction. Each of the four fixing portions 14 is provided with a fixing hole 15.
[0026] As shown in FIG 1, a piston 6 is arranged in each of the inner cavities. The piston 6 forms a sliding seal with an outer wall of the inner barrel 5 and an inner wall of the blocking barrel 1. The piston 6 divides the inner cavity into a collecting cavity 2 on the upper part and a water storage cavity 7 on the lower part. Two piston rods are soldered to a top of the piston 6.
Upper ends of the two piston rods run through the top plate and form a sliding seal with the top plate. A pushing member 8 is arranged above the piston rod. In this embodiment, the pushing member 8 is a hydraulic cylinder. The pushing member 8 is fixed to the top plate through a bolt.
The pushing member 8 is used for driving the piston 6 to slide vertically. A top of the water storage cavity 7 is provided with a one-way valve. A water outlet end of the one-way valve communicates with the water storage cavity 7, and a water inlet end of the one-way valve communicates with a water inlet pipe. The water inlet pipe is glued and fixed to the top plate. A bottom of the piston 6 is provided with a nozzle. The nozzle is located on a side of the collecting cavity 2 away from the drill pipe 4. The nozzle communicates with the water storage cavity 7 through a pipe. Specifically, the mounting methods of the nozzle and the one-way valve are the same as those in the prior art and will not be described in detail in this embodiment. A limit block 51 is soldered to the lower end of the inner barrel 5. The limit block 51 is located below the piston 6 and used for limiting the piston 6, which prevents the piston 6 from sliding to below the inner barrel 5, causing the water storage cavity 7 to be exposed.
[0027] The lower end of the blocking barrel 1 is provided with four discharge ports 11. The four discharge ports 11 respectively communicate with the four collecting cavities 2. A sealing cover 12 is hinged with an outer wall of the blocking barrel 1 and used for sealing the discharge ports 11. An arc-shaped guide bottom plate 21 is soldered to a bottom of the collecting cavity 2, and an end of a top of the guide bottom plate 21 close to the discharge port 11 is lower than an end close to the drill pipe 4, which makes the debris and dust entering the collecting cavity 2 slide to the side close to the discharge port 11, so that the debris and dust can be taken out from the discharge port 11.
[0028] A rotating shaft 3 and five push plates 31 are arranged in the collecting cavity 2. An 5/12 upper end of the rotating shaft 3 vertically runs through the piston 6 and the top plate. The 50 4495 rotating shaft 3 forms a sliding seal with the piston 6. The rotating shaft 3 is rotatable relative to the piston 6 and the top plate. A rotating member 32 is arranged above the rotating shaft 3. In this embodiment, the rotating member 32 is a motor. The rotating member 32 is fixed to the top plate through a bolt, and an output shaft of the rotating member 32 is connected to the rotating shaft 3 through a coupling and used for driving the rotating shaft 3 to rotate. The top of the guide bottom plate 21 is provided with a limit slot facing the rotating shaft 3, and a lower end of the rotating shaft 3 is located in the limit slot, so that the rotating shaft 3 can be limited. The five push plates 31 are uniformly soldered to the lower end of the rotating shaft 3 along a circumferential direction. In this embodiment, the push plates 31 are vertically arranged on the rotating shaft 3, and a bottom of each of the push plates 31 is higher than the guide bottom plate 21, which avoids movement interference between the push plate 31 and the guide bottom plate 21.
[0029] An annular cleaning cavity 61 is arranged in the piston 6. The cleaning cavity 61 is coaxial with the rotating shaft 3. The bottom of the piston 6 is provided with a plurality of cleaning channels 62 communicating with the cleaning cavity 61. A lower end of each of the cleaning channels 62 faces the rotating shaft 3. A pump body is fixed to the top of the piston 6 through a bolt. In this embodiment, the pump body is a submersible pump. The pump body communicates with the cleaning cavity 61 through a pipe.
[0030] The specific implementation process is as follows:
[0031] When in use, the blocking barrel 1 is placed on the ground. At this time, the drill pipe 4 is aligned with the position to be drilled. Initially, the piston 6 is located at the lower end of the inner barrel 5, and water is stored in the water storage cavity 7. Then, an L-shaped structure passes down through the fixing hole 15 and is inserted into the ground to fix the blocking barrel 1. In the drilling process, high-pressure gas is intermittently introduced into the gas inlet channel 41, and at the same time, one of the pistons 6 is pushed upward by the pushing member 8 to increase the volume of the collecting cavity 2, so that the gas, and the debris and dust blown upward by the gas can be collected. While the high-pressure gas is introduced, a driving member above the upward sliding piston 6 is turned on, so that the driving member drives the rotating shaft 3 to rotate. The push plates 31 are driven to rotate to push the debris and dust entering the collecting cavity 2, so that the debris and dust are levelled in the collecting cavity 2. In practical implementation, the driving member may be started after stopping the introduction of the 6/12 high-pressure gas, and then the debris and dust in the collecting cavity 2 are levelled through the 50 4495 push plates 31. The debris and dust entering the collecting cavity 2 move to below the nozzle, so that water sprayed from the nozzle can wet different dust, thereby preventing the dust from flying up again.
[0032] After stopping the introduction of the high-pressure gas, the discharge port 11 communicating with the collecting cavity 2 where the debris and dust are collected is opened, and the debris and dust in the collecting cavity 2 quickly fall out of the discharge port 11 under the centrifugal action. As the debris and dust constantly fall out of the discharge port, the pushing member 8 pushes the piston 6 downward, so that the debris and dust are pushed downward against the push plates 31, thereby ensuring the debris and dust to be subjected to the centrifugal action.
[0033] After the debris and dust in the collecting cavity 2 fall out, the sealing cover 12 is closed to seal the discharge port 11. When the piston 6 slides downward, the space in the water storage cavity 7 increases, and a negative pressure is formed in the water storage cavity 7, so that outside water can be sucked into the water storage cavity 7 and stored in the water storage cavity. At the same time, the pump body above the piston 6 is started, so that the pump body introduces the water in the water storage cavity 7 into the cleaning cavity 61. At this time, the water flows out from the lower end of the cleaning channel 62 to flush the dust adhering to the rotating shaft 3, thereby preventing the dust from inhibiting the slide of the piston 6. After the piston 6 slides to the lower end of the inner barrel 5, the driving member and the pushing member 8 are shut down, thereby completing one discharge process of the debris and dust in the hole.
[0034] Only embodiments of the invention are described above. Common knowledge such as specific technical solutions and/or characteristics well known in the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the technical solutions of the invention, which should also be regarded as the scope of protection of the invention and will not affect the implementation effect of the invention or the practicability of the patent. The scope of protection claimed in this application shall be subject to the contents of the claims, the specific implementations and other records in the Description can be used to interpret the contents of the claims. 7/12
Claims (7)
1. À geological drilling rig for coal mining, comprising a drill pipe, characterized in that a gas inlet channel is arranged in the drill pipe, the drill pipe is sleeved with an annular blocking barrel, the drill pipe is sleeved with an annular inner barrel, the inner barrel is located on an inner side of the blocking barrel, a bottom of the inner barrel is higher than a bottom of the blocking barrel, and the drill pipe is rotatably connected to the inner barrel and vertically slidable relative to the inner barrel; at least two inner cavities are arranged between the sleeve and the blocking barrel along a circumferential direction, a piston is arranged in each of the inner cavity, each of the pistons forms a sliding seal with the blocking barrel and the inner barrel, a collecting cavity is formed below the piston, and a pushing member for driving the piston to slide vertically is arranged above the piston; and the blocking barrel is provided with a discharge port communicating with the collecting cavity, and the blocking barrel is provided with a sealing cover for sealing the discharge port.
2. The geological drilling rig for coal mining according to claim 1, characterized in that a bottom of the collecting cavity is provided with a guide bottom plate, and an end of the guide bottom plate close to the blocking barrel is lower than an end close to the drill pipe.
3. The geological drilling rig for coal mining according to claim 2, characterized in that a top of the blocking barrel is provided with an annular top plate, the top plate is fixed to the blocking barrel and the inner barrel, a water storage cavity is formed between the piston, the top plate, the blocking barrel and the inner barrel, and the water storage cavity communicates with a water inlet pipe; and a nozzle communicating with the water storage cavity is fixed to a bottom of the piston.
4. The geological drilling rig for coal mining according to claim 3, characterized in that the nozzle is located on a side of the piston away from the drill pipe.
5. The geological drilling rig for coal mining according to claim 4, characterized in that a rotating shaft and a plurality of push plates are vertically arranged in the collecting cavity, an upper end of the rotating shaft runs through the piston and the top plate, the rotating shaft forms a sliding seal with the piston and is rotatably connected to the top plate, a rotating member for driving the rotating shaft to rotate is connected to the upper end of the rotating shaft, and the plurality of push plates are fixed to the rotating shaft along a circumferential direction of the rotating shaft. 8/12
6. The geological drilling rig for coal mining according to claim 5, characterized in that the 50 4495 guide bottom plate is provided with a limit slot facing the rotating shaft, and a lower end of the rotating shaft 1s located in the limit slot and rotatably connected to the limit slot.
7. The geological drilling rig for coal mining according to claim 6, characterized in that a cleaning cavity is arranged in the piston, a bottom of the cleaning cavity is provided with a cleaning channel, a lower end of the cleaning channel faces the rotating shaft, the cleaning cavity communicates with a pump body, and the pump body communicates with the water storage cavity. 9/12
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU504495A LU504495B1 (en) | 2023-06-13 | 2023-06-13 | Geological drilling rig for coal mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU504495A LU504495B1 (en) | 2023-06-13 | 2023-06-13 | Geological drilling rig for coal mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU504495B1 true LU504495B1 (en) | 2023-12-14 |
Family
ID=89386383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU504495A LU504495B1 (en) | 2023-06-13 | 2023-06-13 | Geological drilling rig for coal mining |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU504495B1 (en) |
-
2023
- 2023-06-13 LU LU504495A patent/LU504495B1/en active IP Right Grant
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Effective date: 20231214 |