CN102619553A - Spiral catcher - Google Patents
Spiral catcher Download PDFInfo
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- CN102619553A CN102619553A CN2012101213468A CN201210121346A CN102619553A CN 102619553 A CN102619553 A CN 102619553A CN 2012101213468 A CN2012101213468 A CN 2012101213468A CN 201210121346 A CN201210121346 A CN 201210121346A CN 102619553 A CN102619553 A CN 102619553A
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Abstract
The invention relates to a spiral catcher which comprises a hole sealing assembly, a converging assembly and a base assembly successively connected, wherein the hole sealing assembly, the converging assembly and the base assembly are hollow structures for accommodating a drill rod; the inner wall of the drill rod sealing sleeve is provided with top spiral bulges and bottom spiral bulges which are periodically distributed and have the same screw pitches to threads on the spiral drill rod; the tooth tops of the threads on the top spiral bulges and bottom spiral bulges are in interference fit, and the tooth roots of the threads on the top spiral bulges and bottom spiral bulges are in interference fit. The invention has the advantages that because the outer periphery of the spiral drill rod is spiral, enhanced carrying capability is exerted on air residues produced during drilling when the spiral drill rod is drilling; and because the inner wall of the drill rod sealing sleeve has thread matched with the thread on the spiral drill rod, the good sealing of the spiral drill rod can be realized.
Description
Technical field
The invention belongs to the coal mining technical field; Be particularly related to along the layer coal seam in work progress; To the gas of ejection in holing with press wind row powder dust to carry out effective collection and treatment, prevent to execute getting out existing gas exceeding limit and the healthy coal mine special equipment of dust harzard personnel.
Background technology
Coal mine gas, dust accident are one of great disasters of down-hole; If gas, dust accident take place, not only can the heavy damage production environment, and can cause casualties; Cause tremendous loss for the people, enterprise, country; Therefore, eliminating gas exceeding limit and dust is the precondition of prevention gas, dust accident, also is one of important leverage of mine safety production.
Because geologic sedimentation effect; A large amount of toxic and harmfuls such as gas have been overstock in the coal seam, in order to realize safe digging, generally; At first to arrange special-purpose gas pumping tunnel before the digging; Adopt underground drill rig construction extraction borehole to implement gas pumping in advance, treat that extraction is up to standard after, can begin digging coal.Yet in construction extraction borehole process; After particularly many mines get into deep horizontal, coal seam gas-bearing capacity, pressure all will increase, and execute the gas exceeding limit unsafe problems that brill spray orifice even boring time-delay spray orifice cause; The boring hole problem that collapses is also more and more outstanding; In order to overcome collapse hole and gas exceeding limit problem, have to take to press wind row powder construction technology, yet dust harzard has become a new difficult problem again.
To the above-mentioned situation that occurs in the seam mining process; The application number that the applicant submitted on 09 14th, 2011 is CN201110271271.7; The disclosed technical scheme of Chinese invention patent application that name is called " gas dust packing device " promptly is to cause gas exceeding limit or adopt the wind row powder construction technology dust harzard problem of pressing in order to solve the gas that in the tunnel, sprays in the boring in the construction extraction borehole process; In the present technique scheme; Because when drilling rod is drilled into the coal seam; The confined space that its working space is formed by sealing of hole assembly, packing assembly and the base assembly of this invention application wraps; After particularly will adding outside water or air pressure, the sealing of hole assembly expanded radially of sealing of hole assembly has further kept the seal of drilling rod working space, so the waste residue that produces in the drilling rod course of work, the methane gas in the coal seam are all by packing and externally inject and form the abundant amalgam of aqueous vapor slag under the situation of a large amount of dustproof water and get into outside separator and further handle and separate; Therefore having avoided interior gas that sprays of boring or boring mud, dust to get into the tunnel causes gas exceeding limit or working environment to continue to worsen.
But; CN201110271271.7 is in work progress in the Chinese invention patent application; Must make water as the technology essential condition of eliminating dust in a large number, and because the hermetically-sealed construction between gas dust packing device and the drilling rod can only use flat drill (excircle of drilling rod is smooth cylindric).
The scheme that provides for Chinese invention patent application CN201110271271.7, owing to use flat drill, drill bit is not strong to the carrying capacity of gas slag on the one hand, must be by the water of outside input to strengthen the carrying capacity and the dust disposal ability of gas slag.
But; Like a suitable layer coal seam, as shown in Figure 1, the arrangement of coal seam in the rock stratum is that level is downward for a kind of special coal bed texture in the coal seam; If therefore in the drilling process, make water; Water can be immersed in the bottom in coal seam, cause the coal seam that is positioned at bottom to be difficult for exploitation or to cause water leak accident, so the scheme that Chinese invention patent application CN201110271271.7 provides is no longer suitable; And if make water also can increase cost in process of production and bring environment pollution.
In the prior art; Be not directed against boring gas, the dust treatment facility that be exclusively used in of these serious problems along layer coal seam; Therefore execute that a large amount of gas, dust still can be released in tunnel and the air return system in the brill process, cause serious gas exceeding limit, the dust potential safety hazard that exceeds standard.
Summary of the invention
To the objective of the invention is the deficiency that makes water in the more weak and manufacturing process of existing gas dust packing device extraction ability in the construction extraction borehole process in a large number in order solving in the tunnel, to have proposed spiral catcher.
Technical scheme of the present invention is: spiral catcher, comprise the sealing of hole assembly, packing assembly and the base assembly that connect successively, and said sealing of hole assembly, packing assembly and base assembly are that hollow structure is in order to hold drilling rod; It is characterized in that,
Said base assembly comprises that clipping one between base, hex bolts, sealing ring, hex nut, auger stem, said base and the base installing plate encloses sealing ring, and said base links together through hex bolts and hex nut bolt with the base installing plate that is fixed on the reducing steel cylinder end of packing assembly;
Be enclosed with the drilling rod sealing shroud of a tubular on the excircle of said auger stem; Said drilling rod sealing shroud is bonded in in the inwall of sealing sheath body cylindraceous; Stepped cylindrical of the outer wall of said sealing sheath body; The more small-bore cylindrical section of said sealing sheath body passes the inboard that base gets into base; The cylindrical section of the larger caliber of said sealing sheath body is connected to the outside of base at the ladder place, the outer wall of the cylindrical section of the larger caliber of said sealing sheath body is enclosed with the sidewall that is fixed installation tube cylindraceous, said fixed installation tube and has the jackscrew installing hole in order to jackscrew to be installed; The end bolt of said fixed installation tube is connected and installed with and is end cap circular and that can supply auger stem to pass through;
The inwall of said drilling rod sealing shroud have periodic distribution and with auger stem on the identical helical form top of the pitch of screw thread protruding with helical form at the bottom of convexity; The crest of screw thread is interference fit on said helical form top convexity and the auger stem, is interference fit at the bottom of the tooth of screw thread on convexity and the auger stem at the bottom of the said helical form.
The invention has the beneficial effects as follows: because the excircle of auger stem has spiral; So when auger stem is holed, have the carrying capacity of enhancing for executing the gas slag that produces in the brill process; And because drilling rod sealing shroud inwall of the present invention has the screw thread that the screw thread with auger stem is complementary; Therefore can realize the sealing good to auger stem; Therefore under the carrying capacity after auger stem strengthens, can not need inject the seizure that stronger coal bed gas, water, slag can be realized in outside water source; Therefore having avoided interior gas that sprays of boring or boring mud, dust to get into the tunnel causes gas exceeding limit or working environment to continue to worsen.
Description of drawings
Fig. 1 is the exploitation sketch map along layer coal seam of the present invention.
Fig. 2 is the sectional view that spiral catcher of the present invention directly makes progress.
Fig. 3 is the mounting structure sketch map of spiral catcher of the present invention end.
Description of reference numerals: base 1; Base installing plate 11; Hex bolts 2; Sealing ring 3; Hex nut 4; Switchboard 5; Hex bolts 6; Limiting plate 7; Back-up ring 8; Subsequent use efferent duct 9; Reducing steel cylinder 10; Spacing collar 11; Catcher flange 12; Sealing of hole assembly 13; First efferent duct 14; Spacing collar 15; Drilling rod sealing shroud 16; Sealing sheath body 161; Jackscrew 17; Jackscrew installing hole 171; End cap 18; End cap installation tube 181; Hex bolts 19; Spring washer 20; Plain washer 21; Rock stratum 91; Along layer coal seam 92; Auger stem 93.
The specific embodiment
Below in conjunction with accompanying drawing and practical implementation instance the present invention is done further explanation.
As depicted in figs. 1 and 2, spiral catcher comprises the sealing of hole assembly, packing assembly and the base assembly that connect successively, and said sealing of hole assembly, packing assembly and base assembly are that hollow structure is in order to hold drilling rod;
" sealing of hole assembly " structure corresponding among the Chinese invention patent application CN201110271271.7 that proposes before the structure of the sealing of hole assembly 13 of present embodiment and the applicant is identical, as prior art, so is not described in detail.Replacement; Sealing of hole assembly 13 in the present embodiment also can adopt other known configurations " sealing of hole assembly "; As long as can guarantee " the sealing of hole assembly " of this known configurations can play with present embodiment in the identical effect of sealing of hole assembly 13 and can with firm being connected of packing assembly; This implementation process also is known for the person of ordinary skill of the art, therefore is not described in detail.
The packing assembly of present embodiment comprises reducing steel cylinder 10, base installing plate 11, switchboard 5, hex bolts 6, limiting plate 7, back-up ring 8, subsequent use efferent duct 9, spacing collar 11 and the catcher flange 12 of the stepped variation of inner hollow cylindrical outer diameter; One end of said reducing steel cylinder 10 is installed with one and is circular base installing plate 11, has bolt hole on the said base installing plate 11; The other end of said reducing steel cylinder 10 is installed with one and is circular catcher flange 12, and said packing assembly links together through catcher flange 12 and sealing of hole assembly 13 bolts; The sidewall of the reducing steel cylinder 10 of said packing assembly has one first efferent duct 14 and is used for good waste residue, dust and the methane gas of output collection in time, and the exit of said first efferent duct 14 has a spacing collar 15; The sidewall of the reducing steel cylinder 10 of said packing assembly also has a subsequent use efferent duct 9 and is used for when first efferent duct 14 can not fully satisfy requiring of output quantity, opening subsequent use efferent duct 9; Switchboard 5, hex bolts 6, limiting plate 7 and back-up ring 8 are installed on the sidewall of said subsequent use efferent duct 9; Subsequent use efferent duct 9 can opened or close to the said switchboard 5 movable sidewalls that insert subsequent use efferent duct 9 also; The outer wall that said limiting plate 7 is fixedly installed in subsequent use efferent duct 9 is used for the moving position of limit switch plate 5; The inwall that said back-up ring 8 is circular and is fixedly installed in subsequent use efferent duct 9 is used to cooperate the subsequent use efferent duct 9 of closing of switchboard 5; Said hex bolts 6 passes limiting plate 7 and contacts with switchboard 5, is used to unclamp or floatless switch plate 5." packing assembly " structure corresponding among the Chinese invention patent application CN201110271271.7 that proposes before the structure of the packing assembly of present embodiment and the applicant is similar; Therefore can make improvement with reference to prior art, therefore be not described in detail this " packing assembly ".Replacement; Packing assembly in the present embodiment also can adopt other known configurations " packing assembly "; As long as can guarantee " the packing assembly " of this known configurations can play with present embodiment in the identical effect of packing assembly and can with firm being connected of sealing of hole assembly 13 and base assembly; This implementation process also is known for the person of ordinary skill of the art, therefore is not described in detail.
The base assembly of present embodiment comprises that clipping one between base 1, hex bolts 2, sealing ring 3, hex nut 4, auger stem 93, said base 1 and the base installing plate 11 encloses sealing ring 3, and said base 1 links together through hex bolts 2 and hex nut 4 bolts with base installing plate 11; Be enclosed with the drilling rod sealing shroud 16 of a tubular on the excircle of said auger stem 93; Said drilling rod sealing shroud 16 is bonded in in the inwall of sealing sheath body 161 cylindraceous; Stepped cylindrical of the outer wall of said sealing sheath body 161; The more small-bore cylindrical section of said sealing sheath body 161 passes the inboard that base 1 gets into base 1; The cylindrical section of the larger caliber of said sealing sheath body 161 is connected to the outside of base 1 at the ladder place, the outer wall of the cylindrical section of the larger caliber of said sealing sheath body 161 is enclosed with the sidewall that is fixed installation tube cylindraceous 181, said fixed installation tube 181 and has jackscrew installing hole 171 in order to jackscrew 17 to be installed; The tightness that jackscrew 17 cooperates with auger stem 93 in order to adjustment drilling rod sealing shroud 16; The end bolt of said fixed installation tube 181 is connected and installed with and is the circular end cap 18 that supplies auger stem 93 to pass through;
Said fixed installation tube 181 is realized concrete bolt fastening structure between the two with the bolt fastening structure that end cap 18 is formed through hex bolts 19, spring washer 20, plain washer 21.
The inwall of said drilling rod sealing shroud 16 have periodic distribution and with auger stem 93 at the bottom of the identical helical form top protruding 161 of the pitch of screw thread and the helical form protruding 162; The crest 931 of screw thread is interference fit on said helical form top protruding 161 and the auger stem 93,932 is interference fit at the bottom of the tooth of screw thread on protruding and the auger stem 93 at the bottom of the said helical form; Sealing when said drilling rod sealing shroud 16 had both guaranteed auger stem 93 rotations with auger stem 93 good fit has prevented that again the screw thread that has cutting edge of auger stem 93 from cutting bad drilling rod sealing shroud 16;
Above-mentioned base 1, base installing plate 11, switchboard 5, limiting plate 7, back-up ring 8, end cap 18, end cap installation tube 181 adopt and can adopt the Q235 carbon structural steel; Hex bolts 2 adopts the bolt of M8X30 model; Sealing ring 3 adopts elastomeric material; Hex nut 4 adopts the nut of M8 model; Subsequent use efferent duct 9, reducing steel cylinder 10 adopt the steel pipe of respective aperture; The reinforcing bar of spacing collar 11 and spacing collar 15 employing φ 8; Drilling rod sealing shroud 16 adopts elastomeric material, preferred fluorubber material; Sealing sheath body 161 adopts the steel bushing material; Jackscrew 17 adopts the M8X25 model; Hex bolts 19 adopts the M8X25 model.The concrete material of above-mentioned parts can not be interpreted as the restriction to the present invention program just in order to prove the exploitativeness of present embodiment, so long as can realize annexation of the present invention and can keep the normal material that moves of certain hour, all can adopt.
In this embodiment, sealing of hole assembly, packing assembly and base assembly connecting portion place can also embed sealing ring to keep the sealing of connecting portion.
In the present embodiment, be fixedly connected through bolt connecting mode between sealing of hole assembly, packing assembly and the base assembly, certainly, also can adopt other like welding or riveted way the three to be connected, for light installation, bolt connecting mode is a preferred version.
The course of work and the principle of the spiral catcher of present embodiment are: during the work beginning; At first the sealing of hole assembly of spiral catcher is put into the good boring of construction in advance; Import the drill bit of outside gases at high pressure from the center of auger stem to auger stem; Said sealing of hole assembly closely cooperates with boring after expanded radially under the effect of water or air pressure, makes boring inside form confined space on the one hand, and gas and dust leaks when preventing to hole; Can spiral catcher be suspended on the other hand and be fixed in the boring the similar expansion bolt of its principle.Then; Put into auger stem; In the auger stem work engineering; The boring mud, the methane gas in the coal seam and the low amounts of water that constantly produce are all collected in the packing assembly by the hole packer assembly; After a large amount of gases at high pressure are injected in the hole of packing assembly through the auger stem center after air-flow counter-rotating in drill bit place forms the abundant amalgam of aqueous vapor slag object, get into outside separator through first efferent duct 14 and further handle and separates, therefore avoided gas or boring mud, dust entering tunnel to cause the deterioration of gas exceeding limit or working environment.
Because geologic sedimentation effect; A large amount of toxic and harmfuls such as gas have been overstock in the coal seam; In order to realize safe digging, generally, at first adopt the underground drill rig construction to implement gas pumping in advance before the digging along layer extraction borehole in coal-face transportation or return airway; After treating that extraction is up to standard, can begin digging coal.Yet in the suitable layer of construction extraction borehole process; After particularly many mines get into deep horizontal; Coal seam gas-bearing capacity, pressure all will increase, and execute and bore the gas exceeding limit unsafe problems that spray orifice even boring time-delay spray orifice cause, and the boring hole problem that collapses is also more and more outstanding; In order to overcome collapse hole and gas exceeding limit problem; Have to take spiral auger stem pressurization wind row powder construction technology, yet effective sealing problem of dust harzard, auger stem has become new technical barrier again, the main innovate point of application of the present invention is exactly the effective sealing problem that efficiently solves auger stem.
Adopting auger stem in the present embodiment mainly is can have the carrying capacity of enhancing for the gas slag that produces when increasing auger stem boring; But the encapsulation process of auger stem is difficulty relatively; Therefore adopted the special hermetically-sealed construction of present embodiment; Owing to increased the carrying capacity of dust and cinder, therefore can inject water body and just can realize fully.
Those of ordinary skill in the art will appreciate that embodiment described here is in order to help reader understanding's principle of the present invention, should to be understood that protection scope of the present invention is not limited to such special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combinations that do not break away from essence of the present invention according to these teachings disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (2)
1. spiral catcher comprises the sealing of hole assembly, packing assembly and the base assembly that connect successively, and said sealing of hole assembly, packing assembly and base assembly are that hollow structure is in order to hold drilling rod; It is characterized in that,
Said base assembly comprises and clips a circle sealing ring (3) between base (1), hex bolts (2), sealing ring (3), hex nut (4), auger stem (93), said base (1) and the base installing plate (11) that said base (1) and the base installing plate (11) that is fixed on reducing steel cylinder (10) end of packing assembly link together through hex bolts (2) and hex nut (4) bolt;
Be enclosed with the drilling rod sealing shroud (16) of a tubular on the excircle of said auger stem (93); Said drilling rod sealing shroud (16) is bonded in in the inwall of sealing sheath body cylindraceous (161); Stepped cylindrical of the outer wall of said sealing sheath body (161); The more small-bore cylindrical section of said sealing sheath body (161) passes the inboard that base (1) gets into base (1); The cylindrical section of the larger caliber of said sealing sheath body (161) is connected to the outside of base (1) at the ladder place, the outer wall of the cylindrical section of the larger caliber of said sealing sheath body (161) is enclosed with the sidewall that is fixed installation tube cylindraceous (181), said fixed installation tube (181) and has jackscrew installing hole (171) in order to jackscrew (17) to be installed; The end bolt of said fixed installation tube (181) is connected and installed with the end cap (18) that is circular and can supplies auger stem (93) to pass through.
2. spiral catcher according to claim 1; It is characterized in that; The inwall of said drilling rod sealing shroud (16) have periodic distribution and with convexity (162) at the bottom of auger stem (93) is gone up the identical helical form top protruding (161) of the pitch of screw thread and helical form; Said helical form top protruding (161) is interference fit with the crest (931) that auger stem (93) is gone up screw thread, and (932) were interference fit at the bottom of protruding and auger stem (93) were gone up the tooth of screw thread at the bottom of the said helical form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210121346.8A CN102619553B (en) | 2012-04-23 | 2012-04-23 | spiral catcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210121346.8A CN102619553B (en) | 2012-04-23 | 2012-04-23 | spiral catcher |
Publications (2)
| Publication Number | Publication Date |
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| CN102619553A true CN102619553A (en) | 2012-08-01 |
| CN102619553B CN102619553B (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210121346.8A Expired - Fee Related CN102619553B (en) | 2012-04-23 | 2012-04-23 | spiral catcher |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1810580C (en) * | 1991-04-22 | 1993-04-23 | Карагандинский политехнический институт | Method for driving development workings in outburst-prone seams |
| CN201753613U (en) * | 2010-08-11 | 2011-03-02 | 义马煤业集团股份有限公司新安煤矿 | Collector used for outburst prevention |
| CN102042026A (en) * | 2010-12-31 | 2011-05-04 | 江西煤业集团有限责任公司建新煤矿 | Dense shallow hole dust catcher for coal mines |
| CN102251772A (en) * | 2011-07-31 | 2011-11-23 | 郑州光力科技股份有限公司 | Underground orifice dust extractor for coal mine |
| CN102296937A (en) * | 2011-08-04 | 2011-12-28 | 中国矿业大学 | Wet type hole eddy dust collection and control device and wet type hole eddy dust collection and control method |
| CN102337920A (en) * | 2011-09-14 | 2012-02-01 | 成都晟鑫机电设备有限公司 | Gas and dust collecting device |
| CN202176355U (en) * | 2011-08-17 | 2012-03-28 | 安徽恒源煤电股份有限公司祁东煤矿 | Coal mine downhole drilling hole dust-reducing device |
| CN202560297U (en) * | 2012-04-23 | 2012-11-28 | 成都晟鑫机电设备有限公司 | Spiral catcher |
-
2012
- 2012-04-23 CN CN201210121346.8A patent/CN102619553B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1810580C (en) * | 1991-04-22 | 1993-04-23 | Карагандинский политехнический институт | Method for driving development workings in outburst-prone seams |
| CN201753613U (en) * | 2010-08-11 | 2011-03-02 | 义马煤业集团股份有限公司新安煤矿 | Collector used for outburst prevention |
| CN102042026A (en) * | 2010-12-31 | 2011-05-04 | 江西煤业集团有限责任公司建新煤矿 | Dense shallow hole dust catcher for coal mines |
| CN102251772A (en) * | 2011-07-31 | 2011-11-23 | 郑州光力科技股份有限公司 | Underground orifice dust extractor for coal mine |
| CN102296937A (en) * | 2011-08-04 | 2011-12-28 | 中国矿业大学 | Wet type hole eddy dust collection and control device and wet type hole eddy dust collection and control method |
| CN202176355U (en) * | 2011-08-17 | 2012-03-28 | 安徽恒源煤电股份有限公司祁东煤矿 | Coal mine downhole drilling hole dust-reducing device |
| CN102337920A (en) * | 2011-09-14 | 2012-02-01 | 成都晟鑫机电设备有限公司 | Gas and dust collecting device |
| CN202560297U (en) * | 2012-04-23 | 2012-11-28 | 成都晟鑫机电设备有限公司 | Spiral catcher |
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| CN102619553B (en) | 2014-10-22 |
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Granted publication date: 20141022 Termination date: 20160423 |