CN201851116U - Positive-pressure jet spiral sampling drill bit - Google Patents
Positive-pressure jet spiral sampling drill bit Download PDFInfo
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- CN201851116U CN201851116U CN2010205672110U CN201020567211U CN201851116U CN 201851116 U CN201851116 U CN 201851116U CN 2010205672110 U CN2010205672110 U CN 2010205672110U CN 201020567211 U CN201020567211 U CN 201020567211U CN 201851116 U CN201851116 U CN 201851116U
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- sampling
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Abstract
The utility model provides a positive-pressure jet spiral sampling drill bit, which sequentially comprises a sampling drill bit, a spiral pump, a jet and a connector outer sleeve from the front to the rear. Since materials are fed by the spiral pump and the jet of the positive-pressure jet spiral sampling drill bit which are matched with each other, requirements on deep sampling of a coal bed can be satisfied; since the spiral pump is organically combined with the jet, by controlling the feeding speed of the spiral pump, the size of the jet hole of the jet and the pressure of compressed air, the control of small-diameter drilling coal bed sampling air flow and the coordination of reasonable solid-air ratio in a drill rod can be realized, the continuity of a sampling process is good, the materials are prevented from blocking the drill rod and the sampling can be conducted conveniently and rapidly; and moreover, according to the needs in a normal drilling process, by controlling the inlet air of the dual-wall drill rod, the sampling can be conducted at any time, and the drill bit can be positioned at any place and accurately.
Description
Technical field
The utility model relates to a kind of chisel bit, particularly a kind of chisel bit that is used for the deep hole coal seam.
Background technology
For replenishing, the quick determination techniques of regional gas parameter becomes urgent problem to the coal mine gas hazard management based on zone control, local measure at present, thereby the deep hole sampling is the matter of utmost importance that need solve.The sampling mode of deep layer gas mainly contains at present: basket sampling, spiral creep into the aperture and connect coal dust, press wind injection sampling etc., all there is long and the problem that can not spot sampling of complex process, sample time in these sampling methods, seriously hinder the production of seam mining and renderd a service, restricted development of productivity.
At above-mentioned deficiency, need a kind of new deep hole gas chisel bit of research and development, it can be taken a sample fast and accurately, and technology is simple, easy to operate.
Summary of the invention
In view of this, the purpose of this utility model provides a kind of malleation and sprays the spiral chisel bit, cooperates double-wall drill pipe, rig etc. to realize quick, the accurately location sampling in dark coal seam; And technology is simple, and is easy to operate.
The purpose of this utility model is achieved through the following technical solutions: a kind of malleation is sprayed the spiral chisel bit, comprises chisel bit, helicoidal pump, ejector and joint outer sleeve from front to back successively; Described helicoidal pump comprises rotor and stator, and the rotor front end is fixedlyed connected with chisel bit, and the stator front end is provided with reaming bit; The rotor of described helicoidal pump is all fixedlyed connected with joint outer sleeve front end with stator, ejector is arranged in the joint outer sleeve, helicoidal pump is connected with the central through hole of ejector, form the circular passage I between the tube wall of ejector and joint outer sleeve, be provided with gas jetting hole between the central through hole of ejector and the circular passage I.
Further, described ejector is the nozzle ring ejector, and the nozzle ring ejector comprises body, and the tube wall of body is provided with the spray-hole that is used for return air;
Further, described helicoidal pump is that pitch becomes big variable-pitch propeller pump gradually from front to back;
Further, described chisel bit is two leaf alloy bits.
The beneficial effects of the utility model are: adopt malleation of the present utility model to spray the spiral chisel bit, cooperate equipment such as double-wall drill pipe and rig to use, concrete connected mode is: the tail end of joint outer sleeve is connected with double-wall drill pipe, the circular passage I is connected with the annular air channel of double-wall drill pipe, and the central through hole of double-wall drill pipe is connected with the central through hole of nozzle injector; By double-wall drill pipe being carried out the exit passageway of air intake control coal dust, in the sampling process, the front end chisel bit is cut the coal dust that falls is sent into ejector by helicoidal pump front end, under the return air effect of ejector, ejector produces negative pressure near the empty cavity position of front end drill bit one side, utilize negative pressure that coal dust in the front end cavity is sprayed the central passage that enters double-wall drill pipe, coal dust is sent rapidly under the effect of return air after being admitted to the interior pipe of double-wall drill pipe." helicoidal pump-ejector " that adopts malleation to spray the spiral chisel bit wanted the form feeding that cooperates, can satisfy the coal seam depth sampling requirement; Simultaneously, the organic assembling of helicoidal pump and ejector, the size of the central through hole of feeding speed, ejector that can be by the control helicoidal pump and press the wind speed degree, realize slim hole coal seam take a sample distinguished and admirable control and the inner cooperation of solid-gas ratio rationally of drilling rod, make the sampling process continuity good, convenient and swift; And, as required,, take a sample at any time in the normal drilling process by air intake control to double-wall drill pipe, realized any location and accurate location; In addition, adopt this drill bit in sampling process, not need shutoff hell, simplified the sampling operation greatly.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is a structure sectional view of the present utility model;
Fig. 2 is the structure sectional view of nozzle ring ejector of the present utility model.
The specific embodiment
Fig. 1 is a structure sectional view of the present invention; Fig. 2 is the structure sectional view of nozzle ring ejector of the present invention.As shown in the figure, a kind of malleation is sprayed the spiral chisel bit, comprises chisel bit 1, helicoidal pump 2, ejector 3 and joint outer sleeve 4 from front to back successively; Described helicoidal pump comprises rotor 21 and stator 22, and rotor 21 front ends are fixedlyed connected with chisel bit 1, and stator 22 front ends are provided with reaming bit 22a; The rotor 21 of helicoidal pump is all fixedlyed connected with joint outer sleeve 4 front ends with stator 22, ejector 3 is arranged in the joint outer sleeve 4, helicoidal pump 2 is connected with the central through hole of ejector, form circular passage I 5 between the tube wall of ejector and joint outer sleeve, be provided with gas jetting hole between the central through hole of ejector and the circular passage I 5.
The concrete grammar that adopts malleation injection spiral chisel bit of the present invention to take a sample is: cooperate equipment such as double-wall drill pipe and rig to use, concrete connected mode is: the tail end of joint outer sleeve 4 is connected with double-wall drill pipe, circular passage I 5 is connected with the annular air channel of double-wall drill pipe, and the central through hole of double-wall drill pipe is connected with the central through hole of nozzle injector; By double-wall drill pipe being carried out the exit passageway of air intake control coal dust.
When normally creeping into, rig drives malleation injection spiral chisel bit and creeps into forward, press the central passage of wind double-wall drill pipe, pass through the central through hole of nozzle ring ejector then, enter the coal dust that behind the helicoidal pump chisel bit is cut at last and in drilling rod and drill hole wall annular space, blow out.
During sampling, 1 pair of coal body of chisel bit cuts and obtains coal dust, rig drives malleation injection spiral chisel bit and normally creeps into, press wind to enter circular passage I 5 by the circular passage of double-wall drill pipe, form return air through the central passage that enters double-wall drill pipe behind the spray-hole 32 at last, this moment, ejector 3 formed negative pressure near the inner chamber of front end drill bit one side, after coal dust is delivered to the front end cavity of ejector 3 by helicoidal pump, under the traction of negative pressure, enter the central passage of double-wall drill pipe, the last solid and gas eliminator that is blown under the effect of return air carries out the solid and gas separation, finishes quick sampling.
" helicoidal pump-ejector " that adopts malleation to spray the spiral chisel bit wanted the form feeding that cooperates, can satisfy the coal seam depth sampling requirement; Simultaneously, the organic assembling of helicoidal pump and ejector, the size of the central through hole of feeding speed, ejector that can be by the control helicoidal pump and press the wind speed degree, realize slim hole coal seam take a sample distinguished and admirable control and the inner cooperation of solid-gas ratio rationally of drilling rod, make the sampling process continuity good, convenient and swift; And, as required,, take a sample at any time in the normal drilling process by air intake control to double-wall drill pipe, realized any location and accurate location; In addition, adopt this drill bit in sampling process, not need shutoff hell, simplified the sampling operation greatly.
In the present embodiment, described ejector 3 is a nozzle ring ejector 3, and as shown in Figure 2, nozzle ring ejector 3 comprises body 31, and the tube wall of body 31 is provided with the spray-hole 32 that is used for return air, and it is uniform to be specially circumferencial direction.Adopt the nozzle ring injector designs, compare the central nozzle ejector, since from the exterior annular cavity to the spray-hole air intake, can reserve bigger central through hole space for ejector, increase the diameter of nozzle ring ejector central through hole, thereby increase coal dust and enter the area that passes through of double-wall drill pipe central passage, the resistance of reducing friction; By the return air effect of spray-hole, can eliminate the pressure wind that blows to chisel bit simultaneously, when injector failure, can reduce the pressure wind that blows to chisel bit, help the smooth taking-up of coal dust.
In the present embodiment, described helicoidal pump 2 is that pitch becomes big variable-pitch propeller pump gradually from front to back.The variable-pitch propeller pump configuration not only can be offset the solid back of ickings extruding under the cutting of part chisel bit and be pressed wind oppositely to blow out coal dust, supply nozzle ring ejector that can also coal dust is quantitative, avoid causing the excessive and ejector phenomenon of blocking that causes of helicoidal pump feeding, thereby influence operating efficiency.
In the present embodiment, described chisel bit 1 is two leaf alloy bits.The structure of two leaf alloy bits can reduce in sampling process because of fricative heat, thereby preserves the integrity of institute's sample thief.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the power claimed range of the present utility model.
Claims (4)
1. a malleation is sprayed the spiral chisel bit, it is characterized in that: comprise chisel bit (1), helicoidal pump (2), ejector (3) and joint outer sleeve (4) from front to back successively; Described helicoidal pump comprises rotor (21) and stator (22), and rotor (21) front end is fixedlyed connected with chisel bit (1), and stator (22) front end is provided with reaming bit (22a); The rotor of described helicoidal pump (21) is all fixedlyed connected with joint outer sleeve (4) front end with stator (22), ejector (3) is arranged in the joint outer sleeve (4), helicoidal pump (2) is connected with the central through hole of ejector, form circular passage I (5) between the tube wall of ejector and joint outer sleeve, be provided with gas jetting hole between the central through hole of ejector and the circular passage I (5).
2. malleation according to claim 1 is sprayed the spiral chisel bit, it is characterized in that: described ejector (3) is a nozzle ring ejector (3), nozzle ring ejector (3) comprises body (31), and the tube wall of body (31) is provided with the spray-hole (32) that is used for return air.
3. malleation according to claim 2 is sprayed the spiral chisel bit, it is characterized in that: described helicoidal pump (2) is that pitch becomes big variable-pitch propeller pump gradually from front to back.
4. malleation according to claim 3 is sprayed the spiral chisel bit, and it is characterized in that: described chisel bit (1) is two leaf alloy bits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205672110U CN201851116U (en) | 2010-10-19 | 2010-10-19 | Positive-pressure jet spiral sampling drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205672110U CN201851116U (en) | 2010-10-19 | 2010-10-19 | Positive-pressure jet spiral sampling drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201851116U true CN201851116U (en) | 2011-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205672110U Expired - Lifetime CN201851116U (en) | 2010-10-19 | 2010-10-19 | Positive-pressure jet spiral sampling drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201851116U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963043A (en) * | 2010-10-19 | 2011-02-02 | 煤炭科学研究总院重庆研究院 | Positive pressure jet spiral sampling drill |
| CN104764625A (en) * | 2015-04-14 | 2015-07-08 | 河南理工大学 | Low-temperature coal seam sampling device and method |
-
2010
- 2010-10-19 CN CN2010205672110U patent/CN201851116U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963043A (en) * | 2010-10-19 | 2011-02-02 | 煤炭科学研究总院重庆研究院 | Positive pressure jet spiral sampling drill |
| CN101963043B (en) * | 2010-10-19 | 2012-09-05 | 煤炭科学研究总院重庆研究院 | Positive pressure jet spiral sampling drill |
| CN104764625A (en) * | 2015-04-14 | 2015-07-08 | 河南理工大学 | Low-temperature coal seam sampling device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110601 Effective date of abandoning: 20120905 |