CN203066910U - Negative-pressure drilling system - Google Patents
Negative-pressure drilling system Download PDFInfo
- Publication number
- CN203066910U CN203066910U CN 201220606432 CN201220606432U CN203066910U CN 203066910 U CN203066910 U CN 203066910U CN 201220606432 CN201220606432 CN 201220606432 CN 201220606432 U CN201220606432 U CN 201220606432U CN 203066910 U CN203066910 U CN 203066910U
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- dust
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- drilling rod
- air extracting
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Abstract
The utility model relates to a negative-pressure drilling system which comprises a drill rod with a hollow cavity, a drill bit, a hydraulic drilling rig and a support, wherein an extracting opening is formed in the side wall of the drill rod, the rear end of the drill rod is connected with an air extracting box through a dust extracting pipeline, and the air extracting box is connected with an exhaust fan through an air extracting pipe. The air extracting opening in the side wall of the drill rod of an air suction drill undertakes most of dust discharging tasks, and therefore the air extracting and dust discharging effects are greatly improved. A wing plate can break large coal mine into pieces and guide the coal mine into the air extracting opening, therefore dust extracting flow is smoother, and the dust discharging effect is improved. The air extracting box can filter dust and prevent the dust from directly entering an air extracting mechanism, and the accumulated dust can be discharged at regular time. The negative-pressure drilling system has the advantages of being simple and reasonable in structure, easy to machine and manufacture, strong in feasibility, good in dust discharging effect, capable of not producing the dust in a work environment and ensuring physical health of workers, and very beneficial to popularization and implementation.
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 colliery dedicated suction air drill.
Background technology
Because gas threatens the safety of coal mining, the gas under the coal mine in the wall pump drainage coal seam, tunnel becomes one important step before the coal mining.To some weak seams, can only dry method hole, adopt compressed air drifting dust technology, the coal dust and the compressed air that produce when making boring spray along the gap between drilling rod and the hole wall together.The compressed air of drifting dust process using has great impact energy (the too for a short time 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, cause serious infringement to the workman is healthy, therefore a lot of coal miners got pneumoconiosis.Simultaneously, ejection air-flow gas density height runs into the danger that conditions such as high temperature, static, naked light have coal-dust explosion.Because height safety in production needs, the huge Dust Capacity that drifting dust produces must be handled 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 the dry method boring, present way is the aperture dust arrester that the drilling rod sleeve pipe is set in the aperture of dry method boring, small casing gos deep into the coal seam, big sleeve pipe is pressed close to the tunnel wall, compressed-air actuated drifting dust enters big sleeve pipe along the gap ejection between sliding drilling rod and the small casing, and at big sleeve pipe internal spraying depositing dust, efficiency of dust collection is between 50%～60%, though dust-laying effect is obvious, is difficult to reach and makes environmental health standards.The problems that boring exists at air blast, application number bores for disclosing a kind of exhausting, this exhausting is bored and is desired 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 one, and drilling rod needs constantly advance automatically forward during actual the use, the dark big tens of rice of boring in the coal mining field even rice up to a hundred, drilling rod needs constantly to replenish prolongation could be continued forward deeply, must rely on manpower to promote whole driving box in this application moves ahead with drilling rod, be unfavorable for the drilling rod replacing, need pass the drilling rod driving box repeatedly 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 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
For overcoming the problem and shortage that prior art exists, the utility model provides a kind of negative pressure drilling system that can effectively be implemented on the field, colliery.
Technical scheme: a kind of negative pressure drilling system, comprise the drilling rod that has hollow cavity, drill bit, hydraulic drill rig and support, the drilling rod accumbency is rack-mount and be in transmission connection with hydraulic drill rig, has extract opening at the drilling rod sidewall of drill bit rear side, the drilling rod rear end by revolving joint with take out the dirt pipeline and be connected, take out the dirt pipeline and be connected with the air intake of a wind chamber upper end, the wind chamber upper end is provided with air outlet simultaneously, and air outlet is connected with air draft mechanism by exhaust column.
On one section drilling rod sidewall between drill bit and the suction opeing, also be provided with wing plate.Described wing plate plays to be smashed than gathering coal and guide functions, so that suction opeing plays the effect that the best is taken out dust.
Upside is provided with dividing plate in the described wind chamber, dividing plate is divided into particle deposition chamber and airflow chamber with wind chamber, the air intake of wind chamber is positioned at top, particle deposition chamber, and the air outlet of wind chamber is positioned at the airflow chamber top, is provided with the ash discharge passage below described particle deposition chamber.
Filter screen also is installed on the air outlet of wind chamber, and perhaps the outlet at extraction sector is set with filter bag, and filter bag is provided with ventilative micropore.
The beneficial effects of the utility model:
Air draught of the present utility model is bored, and not only can carry out exhausting by the centre bore in drill bit the place ahead, can also carry out exhausting by the extract opening of drilling rod sidewall, and the extract opening of drilling rod sidewall has been born most dust discharging task, and exhausting dust discharge effect is greatly improved.Simultaneously be provided with wing plate at the suction opeing front end, wing plate can be smashed the bulk colliery and water conservancy diversion enters in the extract opening, 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.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.The utility model is simple and reasonable, processing and manufacturing easily, 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 of the utility model negative pressure drilling system.
Number in the figure 1 is drill bit, and 2 is wing plate, and 3 is extract opening, and 4 is drilling rod, and 5 is hydraulic drill rig and support, 6 is revolving joint, and 7 for taking out the dirt pipe, and 8 is wind chamber, and 9 is dividing plate, and 10 are the dust discharge baffle plate, 11 is locking knob, and 12 is exhaust column, and 13 is exhaust opening, and 14 is negative pressure chamber, and 15 is engine.
The specific embodiment
Embodiment 1: Fig. 1 has shown a kind of negative pressure drilling system, by drilling rod 4, and drill bit 1, hydraulic drill rig 5 and support, compositions such as air draft mechanism.Drilling rod 4 accumbency are rack-mount and be in transmission connection with hydraulic drill rig.Drill bit 1 is installed in the front end of drilling rod 4, drilling rod 4 is provided with suction opeing 3 by the sidewall of the last period, the uniform multi-disc wing plate 2 that is provided with on one section drilling rod sidewall between drill bit 1 and the suction opeing 3, wing plate 2 is parallel with axis and have a certain-length, wing plate 2 also can be interspersed, wing plate 2 herein plays to be smashed than gathering coal and guide functions, so that suction opeing 3 plays the effect that the best is taken out dust.
Drilling rod 4 rear ends by revolving joint 6 with take out dirt pipe 7 tunnel and be connected, take out dirt pipe 7 tunnel and be communicated with a wind chamber 8.
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 that the worm gear rotation produces the negative pressure draft effect in the negative pressure chamber, can be on the exhaust opening 13 of negative pressure chamber 14 filter bag of suit, filter bag is provided with ventilative micropore, is convenient to collect dust, regularly replaces.
Claims (4)
1. negative pressure drilling system, comprise the drilling rod that has hollow cavity, drill bit, hydraulic drill rig and support, the drilling rod accumbency is rack-mount and be in transmission connection with hydraulic drill rig, and it is characterized in that: the drilling rod sidewall at the drill bit rear side has extract opening, the drilling rod rear end by revolving joint with take out the dirt pipeline and be connected, take out the dirt pipeline and be connected with the air intake of a wind chamber upper end, the wind chamber upper end is provided with air outlet simultaneously, and air outlet is connected with air draft mechanism by exhaust column.
2. negative pressure drilling system according to claim 1 is characterized in that: on one section drilling rod sidewall between drill bit and the suction opeing, also be provided with wing plate.
3. negative pressure drilling system according to claim 1, it is characterized in that: upside is provided with dividing plate in the described wind chamber, dividing plate is divided into particle deposition chamber and airflow chamber with wind chamber, the air intake of wind chamber is positioned at top, particle deposition chamber, the air outlet of wind chamber is positioned at the airflow chamber top, is provided with the ash discharge passage below described particle deposition chamber.
4. according to each described negative pressure drilling system of claim 1-3, it is characterized in that: filter screen also is installed on the air outlet of wind chamber, and perhaps the outlet at extraction sector is set with filter bag, and filter bag is provided with ventilative micropore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220606432 CN203066910U (en) | 2012-11-16 | 2012-11-16 | Negative-pressure drilling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220606432 CN203066910U (en) | 2012-11-16 | 2012-11-16 | Negative-pressure drilling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203066910U true CN203066910U (en) | 2013-07-17 |
Family
ID=48765720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220606432 Expired - Fee Related CN203066910U (en) | 2012-11-16 | 2012-11-16 | Negative-pressure drilling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203066910U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161415A (en) * | 2012-11-16 | 2013-06-19 | 河南理工大学 | Negative pressure drilling system |
| CN109269371A (en) * | 2018-12-05 | 2019-01-25 | 贵州大学 | A kind of handling implement and its application method of the blind big gun of flat hole |
-
2012
- 2012-11-16 CN CN 201220606432 patent/CN203066910U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161415A (en) * | 2012-11-16 | 2013-06-19 | 河南理工大学 | Negative pressure drilling system |
| CN103161415B (en) * | 2012-11-16 | 2016-02-10 | 河南理工大学 | Negative pressure drilling system |
| CN109269371A (en) * | 2018-12-05 | 2019-01-25 | 贵州大学 | A kind of handling implement and its application method of the blind big gun of flat hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20131116 |