CN103774998A - Inner core opening device of inner-core-detachable drill bit for drilling - Google Patents
Inner core opening device of inner-core-detachable drill bit for drilling Download PDFInfo
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- CN103774998A CN103774998A CN201210396902.2A CN201210396902A CN103774998A CN 103774998 A CN103774998 A CN 103774998A CN 201210396902 A CN201210396902 A CN 201210396902A CN 103774998 A CN103774998 A CN 103774998A
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- inner core
- drill bit
- hammer
- opening device
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Abstract
Disclosed is an inner core opening device of an inner-core-detachable drill bit for drilling. The inner core opening device of the inner-core-detachable drill bit for drilling comprises a rod body and is characterized in that one end of the rod body is fixedly provided with a hammer. The inner core opening device of the inner-core-detachable drill bit for drilling is simple in structure and convenient to operate. Due to the hammer at the front end of a screen pipe, the inner core of the drill bit can be detached easily when being hammered; when being plugged too tightly, the inner core can be detached through an air hammer.
Description
Technical field
The invention belongs to coal mining apparatus field gas discharge in mine device, relate in particular to the inner core opening device of drill bit with removable inner core for drilling.
Background technology
The natural gas that coal mine gas refers to.Main component is alkane, and wherein methane accounts for the overwhelming majority, separately has a small amount of ethane, propane and butane, in addition, generally also contains hydrogen sulfide, carbon dioxide, nitrogen and aqueous vapor, and the inert gas of trace, as helium and argon etc.A large amount of gases that plant generates in coalification course, claim again coal bed gas.The organic matter that type is planted in corruption, is decomposed by bacterium, can generate gas; Thereafter along with deposit buried depth increases, in very long geological epoch, because the effect of high temperature, high pressure is stood in coal seam, enter coal carbonization metamorphic episode, in coal, volatile matter reduces, and fixed carbon increases, generate again a large amount of gas, be kept in the hole and crack of coal seam or rock stratum.
Along with the increase of the pit mining degree of depth, increasing local mine becomes highly gassy mine, and Gas Disaster is on the rise.Therefore, trying to explore and apply mine gas drainage technology, solve mine gas, control coal and Gas Outburst, is local mine urgent problem.
The patent No. is the patent of invention that " 200810017598X ", denomination of invention are " drill bit with removable inner core for drilling ", a kind of drill bit with removable inner core is provided, many kinds of this type of drill bit of developing at present, the mode of deviating from drill bit inner core is all to push up with screen casing, but the inner core that ubiquitous problem is drill bit is deviate from difficulty, often pushes up not open.
Summary of the invention
For the problems referred to above, the invention provides a kind of inner core opening device of drill bit with removable inner core for drilling.
In order to solve the problems of the technologies described above by the following technical solutions: the inner core opening device of drill bit with removable inner core for drilling, comprise the body of rod, it is characterized in that: body of rod one end fixed hammer.
Described tup top is for protruding shape.
The described body of rod is the screen casing drawing out methane.
Described tup is pneumatic hammer, and the described body of rod is the hollow tube being communicated with the air inlet of pneumatic hammer.
Described pneumatic hammer is to establish piston in the chamber of cylinder body, chamber is divided into air-pressure chamber and spring housing by piston, air-pressure chamber connects the inlet channel of cylinder side wall, in spring housing, establish spring and establish air inlet/outlet, piston top is established hammer post and is stretched out cylinder body, establishes hammer post pressure release passage in hammer post, and hammer post pressure release passage lower end is hammer post pressure release air inlet port, upper end is hammer post pressure release gas outlet, and cylinder body pressure release passage is established on cylinder body top.
The material of the described body of rod is glass fiber reinforced plastic or engineering plastics.
Simple structure of the present invention, easy to operate, installs tup at screen casing front end, and due to knocking of tup, the inner core of drill bit is easily thrown off; Tangible Sai get Tai is tight for inner core, uses pneumatic hammer to knock open.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 2.
Fig. 2 is the structural representation of the embodiment of the present invention 3.
Fig. 3 is the use state enlarged drawing of the embodiment of the present invention 3 tups.
Use state enlarged drawing when Fig. 4 is the embodiment of the present invention 3 tup acting.
The specific embodiment
Embodiment 1: a kind of inner core opening device of drill bit with removable inner core for drilling, comprises the body of rod, body of rod one end fixed hammer.The material of the described body of rod is glass fiber reinforced plastic or engineering plastics.
Embodiment 2: as shown in Figure 1, a kind of inner core opening device of drill bit with removable inner core for drilling, comprises that the screen casing 1 ' drawing out methane is as the body of rod, screen casing 1 ' one end fixed hammer 2 ', tup top is for protruding shape.The material of described screen casing is glass fiber reinforced plastic or engineering plastics.
Tup 2 ' is arrived at the inner core of drill bit with removable inner core for drilling by drill pipe bore with screen casing 1 ', twitch top and press inner core that inner core is deviate from.
Embodiment 3: as shown in Figure 2, a kind of inner core opening device of drill bit with removable inner core for drilling, pneumatic hammer 2 is as tup, and the body of rod is the hollow tube 1 being communicated with the air inlet of pneumatic hammer.The material of the described body of rod is glass fiber reinforced plastic or engineering plastics.
As shown in Figure 3, in the chamber of pneumatic hammer cylinder body 2-1, establish piston 2-2, chamber is divided into air-pressure chamber 2-3 and the 2-4 of spring housing by piston 2-2, air-pressure chamber 2-3 connects the inlet channel 2-5 of cylinder body 2-1 sidewall, in the 2-4 of spring housing, establish spring 2-6 and establish air inlet/outlet 2-7, piston 2-2 establishes on top hammer post 2-8 and stretches out cylinder body 2-1, in hammer post 2-8, establish hammer post pressure release passage 2-9, hammer post pressure release passage 2-9 bottom is provided with hammer post pressure release air inlet port 2-10, hammer post pressure release passage top is provided with hammer post pressure release gas outlet 2-11, and cylinder body pressure release passage 2-12 is established on cylinder body top.
As shown in Figure 4, in the time that spring 2-6 is extended configuration, hammer post pressure release air inlet port 2-10 is positioned at the top of air-pressure chamber 2-3, compressed air enters air-pressure chamber 2-3 air pressure promotion piston 2-2 by the inlet channel 2-5 of cylinder body 2-1 sidewall and moves down, in the time that hammer post pressure release air inlet port 2-10 is communicated with air-pressure chamber 2-3, hammer post pressure release gas outlet 2-11 is communicated with cylinder body pressure release passage 2-12, compressed air is discharged, air-pressure chamber 2-1 air pressure sharply reduces, spring 2-6 upsprings piston, hammer post 2-8 upwards knocks, hammer post pressure release air inlet port 2-10 is positioned at the top of air-pressure chamber again, circulate with this, hammer post 2-8 knocks repeatedly.When pneumatic hammer 2 extends the inner core of drill bit with removable inner core for drilling by drill pipe bore, hammer post knocks inner core repeatedly, and inner core is thrown off.
Claims (6)
1. an inner core opening device for drill bit with removable inner core for drilling, comprises the body of rod, it is characterized in that: body of rod one end fixed hammer.
2. the inner core opening device of drill bit with removable inner core for drilling according to claim 1, is characterized in that: described tup top is for protruding shape.
3. the inner core opening device of drill bit with removable inner core for drilling according to claim 1, is characterized in that: the described body of rod is the screen casing drawing out methane.
4. the inner core opening device of drill bit with removable inner core for drilling according to claim 1, is characterized in that: described tup is pneumatic hammer, and the described body of rod is the hollow tube being communicated with the air inlet of pneumatic hammer.
5. the inner core opening device of drill bit with removable inner core for drilling according to claim 4, it is characterized in that: in the chamber that described pneumatic hammer is cylinder body, establish piston, chamber is divided into air-pressure chamber and spring housing by piston, air-pressure chamber connects the inlet channel of cylinder side wall, in spring housing, establish spring and establish air inlet/outlet, piston top is established hammer post and is stretched out cylinder body, in hammer post, establish hammer post pressure release passage, hammer post pressure release passage lower end is hammer post pressure release air inlet port, upper end is hammer post pressure release gas outlet, and cylinder body pressure release passage is established on cylinder body top.
6. according to the inner core opening device of the drill bit with removable inner core for drilling described in claim 1-5, it is characterized in that: the material of the described body of rod is glass fiber reinforced plastic or engineering plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210396902.2A CN103774998A (en) | 2012-10-18 | 2012-10-18 | Inner core opening device of inner-core-detachable drill bit for drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210396902.2A CN103774998A (en) | 2012-10-18 | 2012-10-18 | Inner core opening device of inner-core-detachable drill bit for drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103774998A true CN103774998A (en) | 2014-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210396902.2A Pending CN103774998A (en) | 2012-10-18 | 2012-10-18 | Inner core opening device of inner-core-detachable drill bit for drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103774998A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0286373A2 (en) * | 1987-04-08 | 1988-10-12 | Inco Limited | Bit retaining ring for recovering drill string components |
| US6006844A (en) * | 1994-09-23 | 1999-12-28 | Baker Hughes Incorporated | Method and apparatus for simultaneous coring and formation evaluation |
| CN101144377A (en) * | 2007-10-26 | 2008-03-19 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Oil well sucker rod pump oil pumping completion tubular pile plugging device with pressure |
| CN101363305A (en) * | 2008-10-07 | 2009-02-11 | 西南石油大学 | Long-life high performance air hammer |
| CN101525982A (en) * | 2008-03-04 | 2009-09-09 | 煤炭科学研究总院西安研究院 | Drill bit with removable inner core for drilling |
| CN202913957U (en) * | 2012-10-18 | 2013-05-01 | 张卫星 | Inner core opening device of drill bit used for drilling and provided with detachable inner core |
-
2012
- 2012-10-18 CN CN201210396902.2A patent/CN103774998A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0286373A2 (en) * | 1987-04-08 | 1988-10-12 | Inco Limited | Bit retaining ring for recovering drill string components |
| US6006844A (en) * | 1994-09-23 | 1999-12-28 | Baker Hughes Incorporated | Method and apparatus for simultaneous coring and formation evaluation |
| CN101144377A (en) * | 2007-10-26 | 2008-03-19 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Oil well sucker rod pump oil pumping completion tubular pile plugging device with pressure |
| CN101525982A (en) * | 2008-03-04 | 2009-09-09 | 煤炭科学研究总院西安研究院 | Drill bit with removable inner core for drilling |
| CN101363305A (en) * | 2008-10-07 | 2009-02-11 | 西南石油大学 | Long-life high performance air hammer |
| CN202913957U (en) * | 2012-10-18 | 2013-05-01 | 张卫星 | Inner core opening device of drill bit used for drilling and provided with detachable inner core |
Non-Patent Citations (1)
| Title |
|---|
| 殷新胜等: "松软煤层中风压空气钻进技术与装备", 《煤矿安全》 * |
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Application publication date: 20140507 |