CN203271644U - Negative pressure drilling system for preventing transfinite gas - Google Patents
Negative pressure drilling system for preventing transfinite gas Download PDFInfo
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- CN203271644U CN203271644U CN 201320187417 CN201320187417U CN203271644U CN 203271644 U CN203271644 U CN 203271644U CN 201320187417 CN201320187417 CN 201320187417 CN 201320187417 U CN201320187417 U CN 201320187417U CN 203271644 U CN203271644 U CN 203271644U
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Abstract
The utility model relates to a negative pressure drilling system for preventing transfinite gas. The negative pressure drilling system comprises a hollow drilling rod, a hollow drilling bit, a hydraulic drilling rig, a support and a drainage system. The hollow drilling bit and the hollow drilling rod are respectively provided with an extraction opening, the back end of the hollow drilling rod is connected with a dust extraction pipe through a rotation connecting device, the dust extraction pipe is connected with an air inlet of an air drafting tank, an air outlet of the air drafting tank is connected with an air drafting mechanism, the air drafting mechanism is connected with an air inlet of an explosion suppression spraying dust removal tank, an air outlet of the explosion suppression spraying dust removal tank is connected with the drainage system through an air discharging pipe, and a spraying device is arranged in the explosion suppression spraying dust removal tank. According to the negative pressure drilling system for preventing transfinite gas, air drafting can be carried out through a central hole in the front of the hollow drilling bit, air drafting can also be carried out through the extraction opening in the lateral wall of the hollow drilling rod, the task of discharging most dust is borne by the extraction opening in the lateral wall of the hollow drilling rod, the air drafting effect and the dust removing effect are greatly improved, the dust extraction flow is smooth, and the dust discharging effect is improved. The explosion suppression spraying dust removal tank is installed, dust removal and spraying explosion suppression can be further facilitated, and therefore the safety work of the drainage system is facilitated.
Description
Technical field
The utility model relates to the aid that a kind of coal mining is used, and particularly relates to a kind of special mining suction drill for coal mine.
Background technology
Threaten the safety of coal mining due to gas, the gas in coal mine down-hole tunnel wall pump drainage coal seam becomes one important step before coal mining.To some weak seams, can only dry method hole, adopt compressed air drifting dust technique, the coal dust and the compressed air that produce when making boring spray along the gap between drilling rod and hole wall together.The compressed air of drifting dust process using has great impact energy (the too little drifting dust effect that do not have of impact force), and the gas shock power of formation is strong, and the band dust quantity is up to 3000mg/m
3, cause the environment of work plane very abominable, the serious threat operating personnel's is healthy.Because colliery poor management and miner follow the line of least resistance, often be not with and wear dust mask, to the healthy serious infringement that causes of workman, therefore a lot of coal miners got pneumoconiosis.Simultaneously, ejection air-flow gas density is high, runs into the danger that the conditions such as high temperature, static, naked light have coal-dust explosion.Be to improve the safety in production requirement, the huge Dust Capacity that drifting dust produces must be processed by depositing dust, and forbids that exhaust fan, dust-removing method are restricted the problem that causes dust-laying effect not good enough during depositing dust.In order to improve the serious problem of environmental pollution in dry method boring, present way is that the aperture dust arrester of drilling rod sleeve pipe is set in the aperture of dry method boring, small casing gos deep into the coal seam, large sleeve pipe is pressed close to the tunnel wall, compressed-air actuated drifting dust enters large sleeve pipe along the gap ejection between sliding drilling rod and small casing, and at large sleeve pipe internal spraying depositing dust, efficiency of dust collection is between 50%～60%, although dust-laying effect is obvious, be difficult to reach working envrionment sanitary standard.the problems that boring exists for air blast, publication number is that CN102168534A exhausting is bored, this exhausting is bored and is wanted to reach the purpose that dirt is taken out in air draught, can't application implementation yet there is more problem in this application, one of its problem is: this drilling rod and drive part are integrated, and drilling rod needs constantly automatically advance forward during actual the use, the dark large tens of rice of boring in coal mining field rice even up to a hundred, drilling rod needs constantly to replenish prolongation could be continued forward deeply, must rely on the whole driving box of Manual-pushing to move ahead together with drilling rod in this application, be unfavorable for the drilling rod replacing, need to repeatedly pass the drilling rod driving box during work, feasibility is very poor.Two of its problem is: because drill bit can be passed dust granules backward in the moving process of brill, and the dynamics of exhausting is different from blowing, this application exhausting when implementing only limits to the dust granules in hollow drill bit the place ahead, the drilling rod sidewall exists more dust granules to take away, causing drilling through work often is interrupted, can't effectively implement, to such an extent as to the utility model people has proposed new improvement project.
The utility model content
The problem and shortage that exists for overcoming prior art, the utility model provides a kind of field, colliery that can effectively be implemented on to drilling in coal work, and can effectively prevent the negative pressure drilling system of gas exceeding limit.
technical scheme: a kind of negative pressure drilling system that prevents gas exceeding limit, it is characterized in that: comprise hollow drill pipe, hollow drill bit, hydraulic drill rig, support, and drainage system, hollow drill pipe is rack-mount and be in transmission connection with hydraulic drill rig, wherein, axial extract opening is set in hollow drill bit, be positioned at simultaneously the uniform radial axle gas port that is provided with of hollow drill bit rear side on hollow drill pipe, the hollow drill pipe rear end is connected with air draft mechanism with air draft pipeline by revolving joint, entrance point and the port of export at air draft mechanism are respectively arranged with wind chamber and datonation-inhibition spray for dust suppression case, wherein be provided with atomization mechanism in datonation-inhibition spray for dust suppression case.
On the base plate of described wind chamber and datonation-inhibition spray for dust suppression case, through hole is set, the through hole one hinged ash discharge baffle plate of side arranges locking knob between ash discharge baffle plate opposite side and base plate.
Be provided with the wing plate with axially parallel between hollow drill bit and axial extract opening.
Filter screen also is installed on the air outlet of wind chamber.
The beneficial effects of the utility model:
1, air draught of the present utility model is bored, not only can carry out exhausting by the centre bore in hollow drill bit the place ahead, can also carry out exhausting by the axial extract opening of hollow drill pipe sidewall, the radial axle gas port of hollow drill pipe sidewall has been born most dust discharging task, and exhausting dust discharge effect is greatly improved.Simultaneously be provided with wing plate at radial axle gas port front end, wing plate can be smashed the bulk colliery and water conservancy diversion enters in the radial axle gas port, thereby prevents that the bulk coal cinder from may stop up the problem of boring inner chamber, and makes that to take out the dirt flow more smooth and easy, has improved the dust discharge effect.
2, the utility model also is provided with wind chamber, dust can be filtered, and avoids dust directly to enter air draft mechanism, and the dust of accumulation can regularly emit.
3, the utility model has been installed datonation-inhibition spray for dust suppression case on the air outlet of air draft mechanism, is conducive to further dedusting datonation-inhibition with spraying, thereby is beneficial to the drainage system trouble free service.
4, the utility model is simple and reasonable, easily processing and manufacturing, and feasibility is strong, and dust discharge is effective, makes the non-dusting generation of working environment, guarantees that the workman is healthy, is beneficial to very much promotion and implementation.
Description of drawings
Fig. 1 is the structural representation that the utility model prevents the negative pressure drilling system of gas exceeding limit.
Number in the figure 1 is hollow drill bit, and 2 is wing plate, and 3 is the radial axle gas port, and 4 is hollow drill pipe, 5 is hydraulic drill rig and support, and 6 is revolving joint, and 7 for taking out the dirt pipe, and 8 is wind chamber, 9 is dividing plate, and 10 are the ash discharge baffle plate, and 11 is locking knob, 12 is exhaust column, and 13 is air outlet pipeline, and 14 is negative pressure chamber, 15 is engine, and 16 is datonation-inhibition spray for dust suppression case, and 17 is atomization mechanism, 18 is drainage system, and 19 is stack, and 20 is water pipe.
The specific embodiment
Fig. 1 has shown a kind of negative pressure drilling system that prevents gas exceeding limit, by hollow drill pipe 4, and hollow drill bit 1, hydraulic drill rig and support 5, the compositions such as air draft mechanism and drainage system 18.Wherein, hollow drill pipe 4 accumbency are rack-mount and be in transmission connection with hydraulic drill rig.Hollow drill bit 1 is arranged on the front end of hollow drill pipe 4, axial extract opening is set in hollow drill bit, hollow drill pipe 4 is provided with radial axle gas port 3 by on the sidewall of the last period (being positioned at the hollow drill bit rear side) simultaneously, the uniform multi-disc wing plate 2 that is provided with on one section hollow drill pipe sidewall between hollow drill bit 1 and radial axle gas port 3, wing plate 2 is parallel with axis and have a certain-length, wing plate 2 also can be staggered front to back and distributes or be interspersed by height, wing plate 2 herein plays to be smashed than gathering coal and guide functions, so that radial axle gas port 3 plays the effect that the best is taken out dust.
The air outlet of wind chamber 8 upper ends is connected with air draft mechanism by exhaust column 12, and filter screen can also be installed on the air outlet of wind chamber 8.Air draft mechanism comprises negative pressure chamber 14 and engine 15, and engine 15 drives worm gear rotation generation negative pressure draft effect in negative pressure chamber.
The air outlet of described air draft mechanism is connected with the air inlet port of datonation-inhibition spray for dust suppression case 16 by air outlet pipeline 13, datonation-inhibition spray for dust suppression case 16 upper ends are provided with the gas outlet simultaneously, the gas outlet is connected with drainage system 18 by stack 19, be provided with dividing plate 9 between the interior air inlet port of datonation-inhibition spray for dust suppression case 16 and gas outlet, dividing plate 9 is divided into deashing chamber and airflow chamber with wind chamber, deashing chamber and airflow chamber bottom are communicated with, be provided with the ash discharge passage below described deashing chamber, be sealed and installed with ash discharge baffle plate 10 on the ash discharge passage, upside is provided with atomization mechanism 17 in described airflow chamber.
One side of the ash discharge baffle plate 10 of wind chamber 8 or datonation-inhibition spray for dust suppression case 16 is hinged on a side of through hole, between ash discharge baffle plate 10 opposite sides and base plate, locking knob is set.
Claims (4)
1. negative pressure drilling system that prevents gas exceeding limit, it is characterized in that: comprise hollow drill pipe, hollow drill bit, hydraulic drill rig, support, and drainage system, hollow drill pipe is rack-mount and be in transmission connection with hydraulic drill rig, it is characterized in that: axial extract opening is set in hollow drill bit, be positioned at simultaneously the uniform radial axle gas port that is provided with of hollow drill bit rear side on hollow drill pipe, the hollow drill pipe rear end is connected with air draft mechanism with air draft pipeline by revolving joint, entrance point and the port of export at air draft mechanism are respectively arranged with wind chamber and datonation-inhibition spray for dust suppression case, wherein be provided with atomization mechanism in datonation-inhibition spray for dust suppression case.
2. the negative pressure drilling system that prevents gas exceeding limit according to claim 1, it is characterized in that: on the base plate of described wind chamber and datonation-inhibition spray for dust suppression case, through hole is set, the through hole one hinged ash discharge baffle plate of side arranges locking knob between ash discharge baffle plate opposite side and base plate.
3. the negative pressure drilling system that prevents gas exceeding limit according to claim 1, is characterized in that: be provided with the wing plate with axially parallel between hollow drill bit and extract opening.
4. the negative pressure drilling system that prevents gas exceeding limit according to claim 1, is characterized in that: filter screen also is installed on the air outlet of wind chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320187417 CN203271644U (en) | 2013-04-15 | 2013-04-15 | Negative pressure drilling system for preventing transfinite gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320187417 CN203271644U (en) | 2013-04-15 | 2013-04-15 | Negative pressure drilling system for preventing transfinite gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203271644U true CN203271644U (en) | 2013-11-06 |
Family
ID=49502082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320187417 Expired - Fee Related CN203271644U (en) | 2013-04-15 | 2013-04-15 | Negative pressure drilling system for preventing transfinite gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203271644U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868671A (en) * | 2018-08-24 | 2018-11-23 | 宿州金地工贸有限责任公司 | A kind of fortune envelope pumping integration dust-removing device for wind power slag-discharging drilling machine |
| CN112554818A (en) * | 2020-12-01 | 2021-03-26 | 煤科集团沈阳研究院有限公司 | Device for removing dust and preventing gas from exceeding limit in underground construction drilling and using method |
| CN113445986A (en) * | 2021-07-15 | 2021-09-28 | 中铁二十三局集团第三工程有限公司 | Electric drill is surveyed to gas intelligence that tunnel construction used |
-
2013
- 2013-04-15 CN CN 201320187417 patent/CN203271644U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868671A (en) * | 2018-08-24 | 2018-11-23 | 宿州金地工贸有限责任公司 | A kind of fortune envelope pumping integration dust-removing device for wind power slag-discharging drilling machine |
| CN112554818A (en) * | 2020-12-01 | 2021-03-26 | 煤科集团沈阳研究院有限公司 | Device for removing dust and preventing gas from exceeding limit in underground construction drilling and using method |
| CN112554818B (en) * | 2020-12-01 | 2022-10-28 | 中煤科工集团沈阳研究院有限公司 | Device for removing dust and preventing gas from exceeding limit in underground construction drilling and using method |
| CN113445986A (en) * | 2021-07-15 | 2021-09-28 | 中铁二十三局集团第三工程有限公司 | Electric drill is surveyed to gas intelligence that tunnel construction used |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20170415 |