CN102359389A - Air sealing device for porthole dust catcher - Google Patents
Air sealing device for porthole dust catcher Download PDFInfo
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- CN102359389A CN102359389A CN2011102161767A CN201110216176A CN102359389A CN 102359389 A CN102359389 A CN 102359389A CN 2011102161767 A CN2011102161767 A CN 2011102161767A CN 201110216176 A CN201110216176 A CN 201110216176A CN 102359389 A CN102359389 A CN 102359389A
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- air
- aperture
- air inlet
- grit arrestor
- porthole
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Abstract
The invention relates to an air sealing device for a porthole dust catcher. The air sealing device comprises air injection holes which are arranged at the periphery of the corresponding porthole of the porthole dust catcher and used for blowing dust floating to the corresponding porthole from the porthole dust catcher back to the porthole dust catcher, the air injection holes are provided with respective air inlet ends for connecting with an air source and corresponding air injection ends and define an air seal port for keeping the corresponding porthole unblocked, the central line of each air injection hole is gradually close to the central line of the air seal port in a direction from the respective air inlet end and air injection end. The air sealing device for a porthole dust catcher has the beneficial effects that air flow injected from the air injection holes blows dust floating to the corresponding porthole (a drilling rod inlet or slag outlet) from the porthole dust catcher back to the porthole dust catcher, so that the dust is prevented from spreading to the outside from the corresponding porthole of the porthole dust catcher, thus the problem that dust cannot be prevented from being discharged from the corresponding porthole of the traditional dust catcher can be solved.
Description
Technical field
The present invention relates to the coal mining field, especially a kind of air seal set that is used for the aperture grit arrestor that is applicable to coal mine down-hole drilling.
Background technology
When in the coal seam, holing; Can produce a lot of dust at the hell downwind side when using wind power slag-discharging, during especially soft, that pulverized coal particle is very thin coal bed drilling operation, can produce amounts of dust in the coal seam; Be full of the entire job scene, even in the whole tunnel that can permeate.Not only threaten and influence the workman of field operation, other workmans to operation in same tunnel also cause very big influence simultaneously.
In order to address the above problem; Application number is that 2010106016013.3 Chinese patent discloses a kind of colliery with intensive shallow bore hole grit arrestor; Said colliery comprises the aperture grit arrestor with intensive shallow bore hole grit arrestor, and both sides are provided with corresponding drilling rod import and drilling rod outlet before and after the grit arrestor of said aperture, and correspondence is provided with dedusting mouth, slag-drip opening on the upper and lower both sides; Said drilling rod exit is provided with sleeve, and said dedusting mouth place is provided with spray nozzle.When said grit arrestor is worked; The front end of sleeve, promptly the end away from said aperture grit arrestor embeds rib, and drilling rod is successively through beginning to creep into rib after said drilling rod import and the drilling rod outlet; Thereby the dust that produces in the drilling process is imported in the grit arrestor of aperture through said sleeve; Then dust is sprayed, finally discharge, to reach the depositing dust purpose through said slag-drip opening through said spray nozzle.
Certain depositing dust effect has in use been played with intensive shallow bore hole grit arrestor in above-mentioned colliery; But still there are some problems: 1) because the drilling rod afterbody that use in the colliery mostly is triangle; Therefore can't be in said aperture the drilling rod import department of grit arrestor conventional hermetically-sealed construction is set; And the spray effect of described spray nozzle is limited; Therefore can't the dust that produce in the drilling process fully be drenched, in the process of rod boring, still having the part dust " to escape from " described aperture grit arrestor through said drilling rod import department influences surrounding environment, promptly can't realize the sealing with the drilling rod cooperation place; 2) said slag-drip opening place does not have the dust-break device, and the slag-drip opening place often becomes the outlet that dust is blown out; 3) said aperture grit arrestor employing is overall structure; And drilling rod is generally longer; And in use need often to change; Each aperture grit arrestor that then must will be sheathed on the drilling rod of changing falls along drilling rod axial " taking off ", has also increased its labour intensity when having reduced staff's operating efficiency; 4) owing to be to adopt said spray nozzle depositing dust, the depositing dust medium is a water, and the foreign material such as dregs that therefore produce in after treatment dust (main component is a coal) and the drilling process are mingled in one and can't realize recycling; In addition, down-hole water intaking also comparatively difficulty and water after pollution caused by coal dust, can't realize recycle, this also makes above-mentioned colliery more inconvenient with the use of intensive shallow bore hole grit arrestor.
Summary of the invention
The object of the present invention is to provide a kind of air seal set that is used for the aperture grit arrestor that adopts hermetic seal, be difficult to the problem that prevents that dust from discharging with the place, corresponding aperture that solves existing grit arrestor.
The air seal set that is used for the aperture grit arrestor of the present invention adopts following technical scheme: a kind of air seal set that is used for the aperture grit arrestor; Comprise that the corresponding aperture periphery that is used to be located in the aperture grit arrestor is to blow back the fumarole in the grit arrestor of aperture with the dust that wafts in the grit arrestor of aperture to place, corresponding aperture; Said fumarole has the inlet end that is used for connecting with source of the gas and corresponding jet end separately and surrounds one and keeps the unimpeded sealing gland mouth in corresponding aperture, the center line of each fumarole all from its inlet end separately extremely jet end draw close gradually to the center line of said sealing gland mouth.
The said air seal set that is used for the aperture grit arrestor is also drawn together the air inlet pipe at the place, corresponding aperture that is used to be around in the aperture grit arrestor; Has air inlet on the tube wall of said air inlet pipe; Its inside has the gas channel that communicates with said air inlet; Air inlet pipe surrounds one and keeps the unimpeded sealing gland passage of said sealing gland mouth; The front end of said sealing gland passage has import, and the rear end has outlet, and described fumarole is arranged at air inlet pipe near also being connected with said air inlet conducting through said gas channel on the tube wall of a side of the outlet of said sealing gland passage.
The air inlet position of said air inlet pipe is provided with the control valve that is used to regulate the tolerance size that gets in the said gas channel.
Said air inlet pipe has tapered slope near a side of the outlet of said sealing gland passage, and gradually away from the center line of sealing gland passage, described fumarole is laid on the described tapered slope said tapered slope from front to back.
The jet end of said each fumarole all has a straight hole section, and the center line of the straight hole section of each fumarole is all from front to back along the circumferencial direction conjugate deviation of said sealing gland passage.
The said air seal set that is used for the aperture grit arrestor also comprises the sheath that is used to seal on the corresponding aperture that is assemblied in the aperture grit arrestor, and said sheath is the tubular of both ends open, and said air inlet pipe is integrally formed on the inwall of said sheath.
Coaxial line is equipped with fire-retardant cover in the said sheath, and said fire-retardant putting has the fire-retardant passage that supplies drilling rod to pass, the internal diameter of the ring that the internal diameter of said fire-retardant passage surrounds less than said tracheae.
Be provided with in a end of putting into jet end in the said sheath and be used to prevent the air-flow that sprays from said fumarole air baffle ring along the adherent walking of internal face of sheath towards said fumarole; Have the resistance dirt passage that supplies drilling rod to pass on the said air baffle ring, said resistance dirt passage and center line and the central lines of said sealing gland mouth.
Described sheath comprises first cover and second cover of mutual fastening; Said first puts and is fixed with upper tube half and first plate; Second puts and is fixed with lower tube half and second plate, and said upper and lower semicanal is spliced to form described air inlet pipe, and said upper and lower half plate is spliced to form said air baffle ring.
Since the air seal set that is used for the aperture grit arrestor of the present invention have be used to be located in the aperture grit arrestor corresponding aperture periphery so that the dust that wafts in the grit arrestor of aperture to place, corresponding aperture is blown back the fumarole in the grit arrestor of aperture; Said fumarole has the inlet end that is used for connecting with source of the gas and corresponding jet end separately and surrounds one and keeps the unimpeded sealing gland mouth in corresponding aperture, the center line of each fumarole all from its inlet end separately extremely jet end draw close gradually to the center line of said sealing gland mouth; Therefore air-flow that can be through said fumarole ejection blows grit arrestor waft (drilling rod import or slag-drip opening) located to corresponding aperture dust in aperture to be back to the aperture grit arrestor; The corresponding aperture that prevents dust grit arrestor from the aperture is to external diffusion, and the place, corresponding aperture that has solved existing grit arrestor is difficult to prevent the problem of dust discharge.
Description of drawings
Fig. 1 is the structural representation of the embodiment 1 of the air seal set that is used for the aperture grit arrestor of the present invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the user mode figure of the embodiment 1 of the air seal set that is used for the aperture grit arrestor of the present invention.
The specific embodiment
The embodiment 1 that is used for the air seal set of aperture grit arrestor of the present invention; Shown in Fig. 1-3, have and be used for the sheath 9 that cooperates with the drilling rod inlet seal of aperture grit arrestor 1, sheath 9 be the tubular of both ends open and in use with the concentricity line setting of the drilling rod import of aperture grit arrestor; The internal face of sheath is provided with air inlet pipe 10; Air inlet pipe 10 surrounds an annular, and the annular distance of the annular that it surrounds forms a sealing gland passage, and the sealing gland passage has the outlet that the confession drilling rod of import that the confession drilling rod of front end gets into and rear end passes; The sealing gland passage of air inlet pipe 10 forms the passage that the corresponding drilling rod of a confession passes jointly with the drilling rod import during use; Air inlet pipe 10 is integrally formed on the internal face of sheath 9, and the correspondence position of sheath 9 internal faces forms the outside wall surface of air inlet pipe 10, and the cross section vertical with its center line of air inlet pipe 10 is quadrangle; Its inner tube chamber forms a gas channel; Have on the tube wall of air inlet pipe 10 and be used for the air inlet that is connected with source of the gas and on air inlet, be connected with tracheae 15, said air inlet position is provided with the control valve 16 that is used to regulate the tolerance size, and air inlet 15 is used for gas channel in the air inlet pipe 10 and corresponding source of the gas connection; The tube wall upper edge sealing gland mouth of the rear side of air inlet pipe 10 (near a side of the outlet of sealing gland passage) circumferentially be laid with fumarole 14; The periphery that fumarole 14 is located in the sealing gland mouth upwards, it has and is used for and inlet end that source of the gas connects and corresponding jet end, the inlet end of fumarole is through air inlet pipe interior gas channel and said air inlet conducting; Fumarole 14 is used for blowing back in the aperture grit arrestor 1 wafing in the grit arrestor of aperture to the dust of drilling rod import department; Preventing it discharges from drilling rod import department; The tube wall near a side of the outlet of sealing gland passage of air inlet pipe 10 is one from front to back gradually away from the tapered slope of the center line of said sealing gland passage; Fumarole 14 is laid on the described tapered slope, has made things convenient for the processing to fumarole 14 so widely, reduces its difficulty of processing and cost; The center line of each fumarole 14 is drawn close to the center line of said sealing gland mouth from front side to the rear side of air inlet pipe gradually, the center line of fumarole to the center line of sealing gland mouth draw close between the back and the center line of sealing gland mouth angle with
20-45Degree is advisable; The jet end of each fumarole 14 all has a straight hole section, the circumferencial direction conjugate deviation of the sealing gland passage that the center line of this straight hole section all surrounds along air inlet pipe 10 from front to back, angle excursion with
20-45Degree is advisable, and is for the tight described sealing gland passage of air bell that makes from said fumarole 14 ejection like this and forms spiral air flow, thereby prevent that better dust from " escaping " to go out from drilling rod import department; Locate to be provided with air baffle ring 11 in the rear side (a side) of air inlet pipe 10 in the sheath 9 with fumarole; Blow back break-in to the air baffle ring 11 from the air-flow that blows out in the fumarole 14; Thereby avoided air-flow along the adherent walking of the internal face of sheath 9, improved its hermetic seal (negative-pressure sealing) performance; Also be equipped with fire-retardant cover 12 in the sheath 9; Fire-retardant cover 12 adopts copper material; It has the fire-retardant passage that a confession drilling rod passes; The internal diameter of fire-retardant passage can avoid air inlet pipe 10 to contact with drilling rod less than the internal diameter of the endoporus (being said sealing gland mouth) of the annular that air inlet pipe surrounded like this, plays the effect of protection air inlet pipe 10; Fire-retardant cover 12 is divided into two sections in the both sides, front and back of air inlet pipe 10, and two sections of fire-retardant cover 12 two pressure rings 13 that are connected in the sheath two ends through flange are respectively pressed to establish and are fixed in the sheath 9, certainly, all have the passage that supplies drilling rod to pass on two pressure rings 13; Air seal set adopts split-type structural, and specifically, promptly sheath 9 comprises first cover and second cover of mutual fastening; Described first puts and is fixed with upper tube half and first plate, and described second puts and be fixed with lower tube half and second plate, and said upper and lower semicanal is spliced to form described air inlet pipe 10; Said upper and lower half plate is spliced to form said air baffle ring 11; Said fire-retardant cover 12 and pressure ring 13 all adopt and are divided into the upper and lower two halves formula structure that partly puts simultaneously, and the mode that fastens in the employing can make air seal set assemble shaping fast; And do not need again with air seal set along drilling rod axially put drilling rod, made things convenient for the replacing of drilling rod greatly.
The said air seal set that is used for the aperture grit arrestor in use can be from the radially fastening of drilling rod, rather than is sheathed on the drilling rod from an end of drilling rod, has reduced staff's labour intensity widely; In the process of corresponding rod boring, the dust attempt in the corresponding aperture grit arrestor is when its drilling rod import department discharges, and the air-flow of ejection forms negative pressure with the dust refoulement in the said fumarole, has avoided its influence to surrounding environment.
Because the air seal set that is used for the aperture grit arrestor of the present invention has the drilling rod import periphery that is used to be located in the aperture grit arrestor to blow back the fumarole in the grit arrestor of aperture with wafing in the grit arrestor of aperture to the dust of drilling rod import department; And said fumarole has the inlet end that is used for connecting with source of the gas and corresponding jet end separately and surrounds the sealing gland mouth that a confession drilling rod passes; Corresponding drilling rod is passed in the common passage that forms of drilling rod import of the said air seal set and the aperture grit arrestor of correspondence; In the process of rod boring; When the dust that produces wafts to said drilling rod import department, can it be blown through the air-flow of said fumarole ejection and be back to the aperture grit arrestor, the drilling rod import department that prevents dust grit arrestor from the aperture is to external diffusion; Owing to be to lean on air seal; Therefore air seal set does not need to contact with drilling rod, is leg-of-mutton drilling rod applicable to the cross section, has solved the problem that the drilling rod import department of existing grit arrestor is difficult to seal.
In the foregoing description, described fumarole can also be laid in the drilling rod import department of aperture grit arrestor through the shower nozzle of correspondence, promptly with the carrier of shower nozzle as said fumarole; The ring that said air inlet pipe surrounds can also be Fang Huan; Described sheath, air inlet pipe and air baffle ring can also adopt monolithic construction separately; Described sheath, air baffle ring and fire-retardant cover all can omit; Described air seal set dress can also be used for the slag-drip opening place of aperture grit arrestor; In such cases; Described sealing gland mouth and sealing gland passage all need guarantee the unimpeded for not having cinder to fall of said slag-drip opening, and described air inlet pipe, sheath, the air baffle ring all slag-drip opening with the aperture grit arrestor are corresponding.
Claims (9)
1. air seal set that is used for the aperture grit arrestor; It is characterized in that: comprise that the corresponding aperture periphery that is used to be located in the aperture grit arrestor is to blow back the fumarole in the grit arrestor of aperture with the dust that wafts in the grit arrestor of aperture to place, corresponding aperture; Said fumarole has the inlet end that is used for connecting with source of the gas and corresponding jet end separately and surrounds one and keeps the unimpeded sealing gland mouth in corresponding aperture, the center line of each fumarole all from its inlet end separately extremely jet end draw close gradually to the center line of said sealing gland mouth.
2. the air seal set that is used for the aperture grit arrestor according to claim 1; It is characterized in that: the air inlet pipe of also drawing together the place, corresponding aperture that is used to be around in the aperture grit arrestor; Has air inlet on the tube wall of said air inlet pipe; Its inside has the gas channel that communicates with said air inlet, and air inlet pipe surrounds one and keeps the unimpeded sealing gland passage of said sealing gland mouth, and the front end of said sealing gland passage has import; The rear end has outlet, and described fumarole is arranged at air inlet pipe near also being connected with said air inlet conducting through said gas channel on the tube wall of a side of the outlet of said sealing gland passage.
3. the air seal set that is used for the aperture grit arrestor according to claim 2 is characterized in that: the air inlet position of said air inlet pipe is provided with the control valve that is used to regulate the tolerance size that gets in the said gas channel.
4. the air seal set that is used for the aperture grit arrestor according to claim 2; It is characterized in that: said air inlet pipe has tapered slope near a side of the outlet of said sealing gland passage; Gradually away from the center line of sealing gland passage, described fumarole is laid on the described tapered slope said tapered slope from front to back.
5. according to each described air seal set that is used for the aperture grit arrestor of claim 1-4; It is characterized in that: the jet end of said each fumarole all has a straight hole section, and the center line of the straight hole section of each fumarole is all from front to back along the circumferencial direction conjugate deviation of said sealing gland passage.
6. the air seal set that is used for the aperture grit arrestor according to claim 5; It is characterized in that: also comprise the sheath that is used to seal on the corresponding aperture that is assemblied in the aperture grit arrestor; Said sheath is the tubular of both ends open, and said air inlet pipe is integrally formed on the inwall of said sheath.
7. the air seal set that is used for the aperture grit arrestor according to claim 6; It is characterized in that: coaxial line is equipped with fire-retardant cover in the said sheath; Said fire-retardant putting has the fire-retardant passage that supplies drilling rod to pass, the internal diameter of the ring that the internal diameter of said fire-retardant passage surrounds less than said tracheae.
8. the air seal set that is used for the aperture grit arrestor according to claim 7; It is characterized in that: be provided with in a end of putting into jet end in the said sheath and be used to prevent the air-flow that sprays from said fumarole air baffle ring along the adherent walking of internal face of sheath towards said fumarole; Have the resistance dirt passage that supplies drilling rod to pass on the said air baffle ring, said resistance dirt passage and center line and the central lines of said sealing gland mouth.
9. the air seal set that is used for the aperture grit arrestor according to claim 8; It is characterized in that: described sheath comprises first cover and second cover of mutual fastening; Said first puts and is fixed with upper tube half and first plate; Second puts and is fixed with lower tube half and second plate, and said upper and lower semicanal is spliced to form described air inlet pipe, and said upper and lower half plate is spliced to form said air baffle ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102161767A CN102359389A (en) | 2011-07-31 | 2011-07-31 | Air sealing device for porthole dust catcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102161767A CN102359389A (en) | 2011-07-31 | 2011-07-31 | Air sealing device for porthole dust catcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102359389A true CN102359389A (en) | 2012-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102161767A Pending CN102359389A (en) | 2011-07-31 | 2011-07-31 | Air sealing device for porthole dust catcher |
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| Country | Link |
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| CN (1) | CN102359389A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201474637U (en) * | 2009-08-02 | 2010-05-19 | 朱亚 | Mine drilling orifice dust catcher |
| EP2220336A1 (en) * | 2007-12-17 | 2010-08-25 | Sandvik Mining and Construction Oy | Rock drilling rig and method for drilling |
| CN201902227U (en) * | 2010-12-22 | 2011-07-20 | 山西晋城无烟煤矿业集团有限责任公司 | Dust removal and gas exhaust device for gas drilling construction |
| CN202250151U (en) * | 2011-07-31 | 2012-05-30 | 郑州光力科技股份有限公司 | Air seal device for orifice dust catcher |
-
2011
- 2011-07-31 CN CN2011102161767A patent/CN102359389A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2220336A1 (en) * | 2007-12-17 | 2010-08-25 | Sandvik Mining and Construction Oy | Rock drilling rig and method for drilling |
| CN201474637U (en) * | 2009-08-02 | 2010-05-19 | 朱亚 | Mine drilling orifice dust catcher |
| CN201902227U (en) * | 2010-12-22 | 2011-07-20 | 山西晋城无烟煤矿业集团有限责任公司 | Dust removal and gas exhaust device for gas drilling construction |
| CN202250151U (en) * | 2011-07-31 | 2012-05-30 | 郑州光力科技股份有限公司 | Air seal device for orifice dust catcher |
Non-Patent Citations (1)
| Title |
|---|
| 任德伟: "捕尘器在钻孔施工中的成功应用", 《中国西部科技》, vol. 7, no. 16, 30 June 2008 (2008-06-30) * |
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Application publication date: 20120222 |