CN203867476U - Automatic high pressure and low pressure switching drilling head for hydraulic punching - Google Patents
Automatic high pressure and low pressure switching drilling head for hydraulic punching Download PDFInfo
- Publication number
- CN203867476U CN203867476U CN201420302724.7U CN201420302724U CN203867476U CN 203867476 U CN203867476 U CN 203867476U CN 201420302724 U CN201420302724 U CN 201420302724U CN 203867476 U CN203867476 U CN 203867476U
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- Prior art keywords
- hole
- nozzle
- low pressure
- pressure
- guiding valve
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- 238000005553 drilling Methods 0.000 title claims abstract description 17
- 238000004080 punching Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 239000000498 cooling water Substances 0.000 claims abstract description 11
- 210000004907 gland Anatomy 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000007921 spray Substances 0.000 abstract 6
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
Provided is an automatic high pressure and low pressure switching drilling head for hydraulic punching. A drilling head body and a sealed connecting section are connected through a high pressure and low pressure switching nozzle. Furthermore, the sealed connecting section is connected with a drilling machine which is used for driving the drilling head to work, and a low pressure water hole where low pressure cooling water enters the drilling head body is formed in the drilling head body. The high pressure and low pressure switching nozzle comprises a spray head body, a first through hole communicated with cooling water is formed in the spray head body, the two ends of the spray head body are respectively connected with the drilling head body and the sealed connecting section, a high-pressure water outlet distributed to be perpendicular to the central line of the spray head body is formed in the spray head body, the high-pressure water outlet and a low-pressure water outlet are both communicated with the first through hole, a nozzle slide valve is arranged in the first through hole of the spray head body, and the nozzle slide valve is used for automatically switching the communication relationship between the first through hole and a high-pressure water outlet and the communication relationship between the first through hole and a low-pressure water outlet in the action of water pressure. The automatic high pressure and low pressure switching drilling head for the hydraulic punching can achieve double channels for low pressure water and high pressure water without pulling out a drilling stem.
Description
Technical field
The utility model relates to the drill bit that a kind of water conservancy punching is used, and especially relates to a kind of water conservancy punching high-low pressure and automatically changes drill bit.
Background technology
Administer planning according to mine gas, adopt the existing measure drawing out methane, gas density in boring often falls flat, be mainly because gas permeability of coal seam is poor, researched and proposed by experiment construction main points, hydraulic flushing in hole and the elimination outburst mechanism of middle thereof of hydraulic flushing in hole, research shows, adopt floor roadway layer-through drilling and the extinction measure of hydraulic flushing in hole region, can effectively eliminate outstanding stress, significantly increase the gas permeability in coal seam, ensure the safe and efficient back production of work plane.
And while taking hydraulic pressure punching, need constantly to change rod bit, and adopt bit bore because start to pass into low-pressure water, then passing into water under high pressure carries out reaming, but must adopt the drilling rod of logical water under high pressure when reaming, changes quite trouble and needs two covering devices.
Utility model content
The purpose of this utility model is while passing through hydraulic pressure reaming for solution, need to change the problem of drilling rod and drill bit, provide a kind of water conservancy punching high-low pressure automatically to change drill bit, the utility model can be realized low-pressure water and water under high pressure binary channels, not needing to extract replacing drilling rod can realize, the slip of switching guiding valve in nozzle by high-low pressure can realize and pass into height, the switching of low-pressure water, in the time passing into low-pressure water, now the pretightning force of spring is greater than hydraulic pressure to the active force of guiding valve now, the cavity that the counterbore of guiding valve and nozzle body forms can be connected with the low-pressure water passing into, in the time passing into low-pressure water, having realized water under high pressure through hole and low-pressure water through hole all can water flowing, in the time passing into water under high pressure, because hydraulic pressure is greater than the pretightning force of spring to the active force of guiding valve, now spring is compacted, the cavity that the counterbore of guiding valve and nozzle body forms is sealed, now only have the high pressure limbers can water flowing, thereby realize the automatic switchover of water under high pressure and low-pressure water, and do not need to extract more bit change and can realize.
The utility model is the deficiency solving the problems of the technologies described above, and the technical scheme adopting is:
A kind of water conservancy punching is changed drill bit automatically with high-low pressure, comprise drill body, high-low pressure switches nozzle and the section of being tightly connected, drill body and the section of being tightly connected are switched nozzle by high-low pressure and are linked together, and the section of being tightly connected is connected with the drilling rod that drives drill bit work, on drill body, offer the low pressure water hole that passes into low pressure cooling water, high-low pressure switches nozzle and comprises the sprayer body that offers the through hole I being communicated with cooling water in it, the two ends of sprayer body are connected with drill body and the section of being tightly connected respectively, on sprayer body, offer the high pressure weep hole that vertical its center line distributes, high pressure weep hole and low pressure delivery hole are all communicated with through hole I, the nozzle guiding valve of connected relation in automatically switch under Water Pressure through hole I and high pressure weep hole and a low pressure delivery hole is installed in the through hole I of sprayer body.
Nozzle guiding valve comprises nozzle body, spring, guiding valve and nozzle gland, described nozzle body is the cylinder that offers counterbore, and counterbore total depth is less than the length of nozzle body, the aperture section of counterbore is communicated with high pressure weep hole, its aperture section surrounding offers one end and is communicated with the through hole II that the other end is communicated with the macropore section of counterbore with low pressure delivery hole, described guiding valve is a large multidiameter shaft of the little mid diameter of two diameter, and the centre of axle offers along its axial through hole III, on one end that wherein diameter is little, also offer along its diametric through hole IV, through hole IV is communicated with its axially extending bore III, guiding valve is slidably arranged in counterbore on nozzle body and one end of offering through hole IV is stretched in the aperture of counterbore, spring fitting is in the aperture of counterbore and support guiding valve and make large diameter one end of guiding valve and the macropore of counterbore bottom form cavity, and through hole IV and through hole II are all communicated with cavity, guiding valve is fastened in nozzle body by the nozzle gland being fixed on its other end.
The pretightning force of described spring is less than the impulse force of high-pressure cooling water to nozzle guiding valve.
In described high pressure weep hole, high pressure nozzle is installed, and the water outlet direction of high pressure nozzle and the axis of nozzle guiding valve are 30 ° of-50 ° of angles.
On one end of the macropore bottom formation cavity of the large diameter and counterbore of described guiding valve, gasket seal is installed.
The beneficial effects of the utility model are: the utility model can be realized low-pressure water and water under high pressure binary channels, not needing to extract replacing drilling rod can realize, switching nozzle by high-low pressure can realize and pass into height, the switching of low-pressure water, in the time passing into low-pressure water, now the pretightning force of spring is greater than hydraulic pressure to the active force of guiding valve now, the cavity that the counterbore of guiding valve and nozzle body forms can be connected with the low-pressure water passing into, in the time passing into low-pressure water, having realized water under high pressure through hole and low-pressure water through hole all can water flowing, in the time passing into water under high pressure, because hydraulic pressure is greater than the pretightning force of spring to the active force of guiding valve, now spring is compacted, the cavity that the counterbore of guiding valve and nozzle body forms is sealed, now only have the high pressure limbers can water flowing, thereby realize the automatic switchover of water under high pressure and low-pressure water, and do not need to extract more bit change and can realize.
Brief description of the drawings
Fig. 1 is structure diagram of the present utility model.
Fig. 2 is the structural representation of guiding valve in the utility model.
Fig. 3 is the structural representation of nozzle body in the utility model.
Graphical indicia: 1, the section of being tightly connected; 2, sprayer body; 201, through hole I; 3, high pressure nozzle; 4, drill body; 5, low pressure water hole; 6, spring; 7, high pressure weep hole; 8, nozzle body; 801, through hole II; 9, gasket seal; 10, guiding valve; 1001, through hole III; 11, nozzle gland; 12, through hole IV.
Detailed description of the invention
Shown in figure, detailed description of the invention is as follows:
A kind of water conservancy punching is changed drill bit automatically with high-low pressure, comprise drill body 4, high-low pressure switches nozzle and the section of being tightly connected 1, drill body 4 and the section of being tightly connected 1 are switched nozzle by high-low pressure and are linked together, and the section of being tightly connected 1 is connected with the rig that drives drill bit work, on drill body 4, offer the low pressure water hole 5 that passes into low pressure cooling water, high-low pressure switches nozzle and comprises the sprayer body 2 that offers the through hole I201 being communicated with cooling water in it, the two ends of sprayer body 2 are connected with drill body 4 and the section of being tightly connected 1 respectively, on sprayer body 2, offer the high pressure weep hole 7 that vertical its center line distributes, high pressure weep hole 7 and low pressure delivery hole 5 are all communicated with through hole I201, the nozzle guiding valve of connected relation in automatically switch under Water Pressure through hole I201 and high pressure weep hole 7 and a low pressure delivery hole 5 is installed in the through hole I201 of sprayer body 2.
Nozzle guiding valve comprises nozzle body 8, spring 6, guiding valve 10 and nozzle gland 11, described nozzle body 8 is for offering the cylinder of counterbore, and counterbore total depth is less than the length of nozzle body 8, the aperture section of counterbore is communicated with high pressure weep hole 7, its aperture section surrounding offers one end and is communicated with the through hole II801 that the other end is communicated with the macropore section of counterbore with low pressure delivery hole 5, described guiding valve 10 is a large multidiameter shaft of the little mid diameter of two diameter, and the centre of axle offers along its axial through hole III1001, on one end that wherein diameter is little, also offer along its diametric through hole IV12, through hole IV12 is communicated with its axially extending bore III1001, guiding valve 10 is slidably arranged in counterbore on nozzle body 8 and one end of offering through hole IV12 is stretched in the aperture of counterbore, spring 6 is arranged in the aperture of counterbore and supports guiding valve 10 and makes large diameter one end of guiding valve 10 and the macropore of counterbore bottom formation cavity, and through hole IV12 and through hole II are all communicated with cavity, guiding valve 10 is fastened in nozzle body 8 by the nozzle gland 11 being fixed on its other end.
The pretightning force of described spring 6 is less than the impulse force of high-pressure cooling water to nozzle guiding valve.
In described high pressure weep hole 7, high pressure nozzle 3 is installed, and the water outlet direction of high pressure nozzle 3 and the axis of nozzle guiding valve are 30 ° of-50 ° of angles.
On one end of the macropore bottom formation cavity of the large diameter and counterbore of described guiding valve 10, gasket seal 9 is installed.
Switching nozzle by high-low pressure can realize and pass into height, the switching of low-pressure water, in the time passing into low-pressure water, now the pretightning force of spring is greater than hydraulic pressure to the active force of guiding valve now, the cavity that the counterbore of guiding valve and nozzle body forms can be connected with the low-pressure water passing into, in the time passing into low-pressure water, having realized water under high pressure through hole and low-pressure water through hole all can water flowing, in the time passing into water under high pressure, because hydraulic pressure is greater than the pretightning force of spring to the active force of guiding valve, now spring is compacted, the cavity that the counterbore of guiding valve and nozzle body forms is sealed, now only have the high pressure limbers can water flowing, thereby realize the automatic switchover of water under high pressure and low-pressure water, and do not need to extract more bit change and can realize.
The technical scheme that the utility model is cited and embodiment are not restrictions, in the cited technical scheme of the utility model and embodiment is equal to or effect same approach is all protected at the utility model scope.
Claims (5)
1. a water conservancy punching is changed drill bit automatically with high-low pressure, it is characterized in that: comprise drill body (4), high-low pressure switches nozzle and the section of being tightly connected (1), drill body (4) and the section of being tightly connected (1) are switched nozzle by high-low pressure and are linked together, and the section of being tightly connected (1) is connected with the drilling rod that drives drill bit work, on drill body (4), offer the low pressure water hole (5) that passes into low pressure cooling water, high-low pressure switch nozzle comprise in it, offer the through hole I(201 being communicated with cooling water) sprayer body (2), the two ends of sprayer body (2) are connected with drill body (4) and the section of being tightly connected (1) respectively, on sprayer body (2), offer the high pressure weep hole (7) that vertical its center line distributes, high pressure weep hole (7) and low pressure delivery hole (5) all with through hole I(201) be communicated with, the through hole I(201 of sprayer body (2)) in the through hole I(201 that automatically switches under Water Pressure is installed) with high pressure weep hole (7) and low pressure delivery hole (5) in the nozzle guiding valve of connected relation.
2. a kind of water conservancy punching according to claim 1 is changed drill bit automatically with high-low pressure, it is characterized in that: nozzle guiding valve comprises nozzle body (8), spring (6), guiding valve (10) and nozzle gland (11), described nozzle body (8) is for offering the cylinder of counterbore, and counterbore total depth is less than the length of nozzle body (8), the aperture section of counterbore is communicated with high pressure weep hole (7), its aperture section surrounding offers one end and is communicated with the through hole II(801 that the other end is communicated with the macropore section of counterbore with low pressure delivery hole (5)), described guiding valve (10) is a large multidiameter shaft of the little mid diameter of two diameter, and the centre of axle offers along its axial through hole III(1001), on one end that wherein diameter is little, also offer along its diametric through hole IV(12), through hole IV(12) with its axially extending bore III(1001) be communicated with, guiding valve (10) is slidably arranged in counterbore on nozzle body (8) and offers through hole IV(12) one end stretch in the aperture of counterbore, spring (6) is arranged in the aperture of counterbore and supports guiding valve (10) and makes large diameter one end of guiding valve (10) and the macropore of counterbore bottom formation cavity, and through hole IV(12) and through hole II(801) be all communicated with cavity, guiding valve (10) is fastened in nozzle body (8) by the nozzle gland (11) being fixed on its other end.
3. a kind of water conservancy punching according to claim 2 is changed drill bit automatically with high-low pressure, it is characterized in that: the pretightning force of described spring (6) is less than the impulse force of high-pressure cooling water to nozzle guiding valve.
4. a kind of water conservancy punching according to claim 1 is changed drill bit automatically with high-low pressure, it is characterized in that: in described high pressure weep hole (7), high pressure nozzle (3) is installed, and the water outlet direction of high pressure nozzle (3) and the axis of nozzle guiding valve are 30 ° of-50 ° of angles.
5. a kind of water conservancy punching according to claim 1 is changed drill bit automatically with high-low pressure, it is characterized in that: on one end of the macropore bottom formation cavity of the large diameter and counterbore of described guiding valve (10), gasket seal (9) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420302724.7U CN203867476U (en) | 2014-06-09 | 2014-06-09 | Automatic high pressure and low pressure switching drilling head for hydraulic punching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420302724.7U CN203867476U (en) | 2014-06-09 | 2014-06-09 | Automatic high pressure and low pressure switching drilling head for hydraulic punching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867476U true CN203867476U (en) | 2014-10-08 |
Family
ID=51648446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420302724.7U Expired - Fee Related CN203867476U (en) | 2014-06-09 | 2014-06-09 | Automatic high pressure and low pressure switching drilling head for hydraulic punching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867476U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993837A (en) * | 2014-06-09 | 2014-08-20 | 平顶山市安泰华矿用安全设备制造有限公司 | High-low pressure automatic switching drill bit for hydraulic punching |
-
2014
- 2014-06-09 CN CN201420302724.7U patent/CN203867476U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993837A (en) * | 2014-06-09 | 2014-08-20 | 平顶山市安泰华矿用安全设备制造有限公司 | High-low pressure automatic switching drill bit for hydraulic punching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |