CN205977217U - High low -pressure water flow automatic switching type cuts coal device - Google Patents
High low -pressure water flow automatic switching type cuts coal device Download PDFInfo
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- CN205977217U CN205977217U CN201620985536.8U CN201620985536U CN205977217U CN 205977217 U CN205977217 U CN 205977217U CN 201620985536 U CN201620985536 U CN 201620985536U CN 205977217 U CN205977217 U CN 205977217U
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Abstract
The utility model provides a high low -pressure water flow automatic switching type cuts coal device, have the body of rod of auger and the drill bit of being connected with the body of rod including the outer wall, the central passage that has the circulation of supplying water in the body of rod, the body of rod is equipped with a plurality of efflux nozzle that run through in body of rod lateral wall and the centrally positioned passageway along the tail end of the direction of punching a hole, body of rod both ends all are provided with the female joint, the central passage afterbody is provided with annular spacing arch with the female joint department of meeting, the body of rod is connected with the drill bit through a connector, connector one end and the first end screw thread connection of the body of rod, the connector other end is inserted through the shaft -like connecting portion of this end and is established in the drill bit, and shaft -like connecting portion lateral wall is provided with the spacer pin that is used for fixed drill bit, the central passage that the body of rod is located between connector and the spacing arch is provided with high low -pressure water flow switching mechanism. The device, the low -pressure water flow cooling that is used for punching, the cave is made to the water under high pressure inter -item transfer in punching a hole, simple structure and the wearing and tearing back is convenient changes.
Description
Technical field
This utility model is related to downhole coal mine technical field of mechanical equipment, specially a kind of high-low pressure current automatic conversion type coal cutting
Device.
Background technology
With the increase of coal bed drilling depth, the stress between coal seam is also gradually increased, the gas that common little drill bit is beaten
Stress extruding between extraction hole is easy to by coal seam is gone back, and greatly reduces the efficiency of gas drainage under suction.Waterpower drilling technique is certainly
Just gradually it is applied to up to now in seam mining after being found the eighties in last century.But due to waterpower bore operation
Mode needs in punching to extract drilling rod, changes punching apparatus into, just enables hydraulic flushing in hole.These equipment are mostly relatively more stupid
Weight, adnexa is more, can cause to import smoothly because of reasons such as collapse holes, have a strong impact on gas when complex procedures and secondary importing drilling rod
Extraction works, and causes the low labor strength of drilling efficiency and increases, the harmful effect of each side such as downhole production efficiency.Existing
Although some water knife coal cutting devices achieve waterpower coal cutting, it is difficult to dismounting, replacing after this punching is worn and torn with hole punched device, former
Some drill bits are connected using taper thread with making cave device, and through drilling, rotation rear thread excessively fastens, and dismounting difficulty is larger, also holds
Fragile make cave device.
Utility model content
In order to solve problem present in above-mentioned hydraulic flushing in hole operation, the utility model proposes a kind of be used for colliery waterpower
High-low pressure current automatic conversion type coal cutting device in punching operation, its structure is simple, be convenient for changing after abrasion, and disclosure satisfy that
Punching is required with punching.
This utility model for the taken technical scheme that solves the above problems is：A kind of high-low pressure current automatic conversion type
Coal cutting device, the body of rod carrying auger including outer wall and the drill bit being connected with the body of rod, are had in the body of rod in circulating for current
Heart passage, the body of rod is provided with the fluid jet nozzle that multiple bar body sidewalls are placed in central passage, bar along the tail end in punching direction
Body two ends are provided with female joint, and central passage afterbody and female joint joint are provided with annular stop projection, and the body of rod passes through one
Union joint is connected with drill bit, is threadeded with body of rod head end in union joint one end, and the union joint other end passes through the shaft-like connection at this end
Portion is plugged in drill bit, and shaft-like connecting portion side wall is provided with the spacer pin for fixed drill bit, and the body of rod is located at union joint and limit
It is provided with high-low pressure current switching mechanism in central passage between the projection of position；
Described high-low pressure current switching mechanism includes piston cylinder and the piston valve being plugged in piston cylinder that slides, piston cylinder
It is the cylinder opening wide along the sealing of punching direction head end, tail end with piston valve, piston cylinder rear side wall offers and fluid jet nozzle
The high-pressure spray hole being mutually communicated；Form low pressure water flow passage, the side wall of piston cylinder between the cylinder of piston cylinder and central passage
Offer the low pressure water flow through hole I with low pressure water flow channel connection, the side wall of piston valve offers low pressure water flow through hole II, piston
Valve is connected with the diapire of piston cylinder sealed end by the elastic component being arranged in piston cylinder cylinder, and in elastic component naturalness
Under, low pressure water flow through hole II is mutually communicated with low pressure water flow through hole I, and the valve wall end seal high-pressure spray hole of piston valve, and
When hydraulic pressure increases, piston valve reach compression elastic piece rear enclosed low pressure water flow through hole II, open high-pressure spray hole.
As preferred, described piston cylinder head end is sealed by plug.
As preferred, the two ends of described piston cylinder are respectively provided with the connection protuberance mated with central passage internal diameter, piston cylinder
Cylinder external diameter between two connection protuberances is less than central passage internal diameter, and low pressure water flow through hole I is arranged on piston cylinder cylinder
At the position of upper adjacent pistons cylinder tail end connection protuberance, high-pressure spray hole is arranged in the connection protuberance of piston cylinder tail end.
As preferred, described union joint has the through hole connecting with central passage.
As preferred, it is provided with described drill bit and connects with the central passage in the body of rod and the through hole in union joint
For cooling cavity.
As preferred, at the opening end of described piston cylinder, it is provided with the spacing back-up ring for limiting piston valve position.
Compared with prior art, this utility model has the advantages that：
The conversion of this high-low pressure make cave device be integrate drill, the device of punching, structure is simple, with low cost, only need
Change the conversion that water flow pressure or flow velocity can easily be realized drilling with punching function.Convenient disassembly upon wear simultaneously, solves
Drill in conventional equipment to change with punching and change that spare and accessory parts are more, labor strength is big, inefficiency problem.
Brief description
Fig. 1 is a kind of structural representation of this utility model high-low pressure current automatic conversion type coal cutting device；
Fig. 2 is the structural representation of the body of rod in a kind of this utility model high-low pressure current automatic conversion type coal cutting device；
Fig. 3 is high-low pressure current switching mechanism in a kind of this utility model high-low pressure current automatic conversion type coal cutting device
Structural representation；
Fig. 4 is the structural representation of union joint in a kind of this utility model high-low pressure current automatic conversion type coal cutting device；
Fig. 5 is the structural representation of drill bit in a kind of this utility model high-low pressure current automatic conversion type coal cutting device；
In figure labelling：1st, the body of rod, 101, fluid jet nozzle, 102, female joint, 2, annular stop raised, 3, union joint, 301,
Spacer pin, 4, piston cylinder, 401, high-pressure spray hole, 402, low pressure water flow through hole I, 403, connection protuberance, 5, piston valve, 501, low
Pressure throughbore II, 6, elastic component, 7, low pressure water flow passage, 8, drill bit, 801, cavity, 9, plug, 10, spacing back-up ring.
Specific embodiment
With reference to specific embodiment, this utility model is elaborated, the present embodiment is with technical solutions of the utility model
Premised on, give detailed embodiment and specific operating process.
As illustrated, this utility model is a kind of high-low pressure current automatic conversion type coal cutting device, carries including outer wall and twist
The body of rod 1 of dragon and the drill bit 8 being connected with the body of rod 1, have the central passage for current circulation, the body of rod 1 is along punching side in the body of rod 1
To tail end be provided with multiple run through the fluid jet nozzle 101 that the body of rod 1 side wall is placed in central passage, the body of rod 1 two ends are provided with
Female joint 102, central passage afterbody and female joint 102 joint are provided with annular stop projection 2, and the body of rod 1 passes through a union joint 3
It is connected with drill bit 8, threadeded with the body of rod 1 head end in union joint 3 one end, union joint 3 other end passes through the shaft-like connecting portion at this end
It is plugged in drill bit 1, and shaft-like connecting portion side wall is provided with the spacer pin 301 for fixed drill bit 8, the body of rod 1 is located at union joint 3
It is provided with high-low pressure current switching mechanism in central passage and annular stop projection 2 between；
Described high-low pressure current switching mechanism includes piston cylinder 4 and the piston valve 5 being plugged in piston cylinder 4 that slides, and lives
Plug tube 4 and piston valve 5 are the cylinder opening wide along the sealing of punching direction head end, tail end, and piston cylinder 4 rear side wall offers and penetrates
The high-pressure spray hole 401 that stream shower nozzle 101 is mutually communicated；Form low pressure water flow passage between the cylinder of piston cylinder 4 and central passage
7, the side wall of piston cylinder 4 offers the low pressure water flow through hole I 402 connecting with low pressure water flow passage 7, and the side wall of piston valve 5 opens up
There is low pressure water flow through hole II 501, piston valve 5 is by the elastic component 6 that is arranged in piston cylinder 4 cylinder and piston cylinder 4 sealed end
Diapire connects, and under elastic component 6 naturalness, low pressure water flow through hole II 501 is mutually communicated with low pressure water flow through hole I 402, and
The valve wall end seal high-pressure spray hole 401 of piston valve 5, and when hydraulic pressure increases, seal after piston valve 5 reach compression elastic piece 6
Close low pressure water flow through hole II 501, open high-pressure spray hole 401.
It is basic embodiment of the present utility model above, can be improved further, optimize or limit on the basis of above
Fixed.
Further, described piston cylinder 4 head end is sealed by plug 9.
Further, the two ends of described piston cylinder 4 are respectively provided with the connection protuberance 403 mated with central passage internal diameter, piston
The cylinder external diameter that cylinder 4 is located between two connection protuberances 403 is less than central passage internal diameter, and low pressure water flow through hole I 402 is arranged on work
At the position of adjacent pistons cylinder tail end connection protuberance 403 on plug tube 4 cylinder, high-pressure spray hole 401 is arranged on piston cylinder tail end
In connection protuberance 403.
Further, described union joint 3 has the through hole connecting with central passage.
Further, it is provided with described drill bit 8 and pass through with the through hole phase in the central passage in the body of rod 1 and union joint 3
The logical cavity 801 for cooling.
Further, it is provided with the spacing back-up ring 10 for limiting piston valve 5 position at the opening end of described piston cylinder 4.
During normally drilling, the flow velocity of water and pressure ratio are relatively low, and current first enter through the central passage in the body of rod 1 and live
Plug valve 5, now hydraulic pressure be not enough to compression elastic piece 6, the low pressure water flow through hole II 501 of piston valve 5 and the low pressure water flow of piston cylinder 4
Through hole I 402 is mutually communicated, and the valve wall end seal high-pressure spray hole 401 of piston valve 5, and whole coal cutting device is in low pressure water
Stream rinses the state of cooling, flows into low pressure water flow passage after current elder generation after low pressure water flow through hole II 501, low pressure water flow through hole I 402
7, and be flowed in the cavity 801 in drill bit 8 after entering into through low pressure water flow passage 7 in the through hole of union joint 3, drill bit 8 is entered
Row waterpower cools down.
Cool down the principle that link uses orifice restriction in drill bit：After current pass through union joint 3, current run into and narrow suddenly
Section, makes the pressure of current drastically decline due to there is resistance, and its corresponding evaporating temperature also can accordingly decline, therefore liquid
Will evaporate at a lower temperature, the evaporation process absorption heat of itself, thus cooling down to drill bit 8.
During cave is made in punching, the pressure of increased water flow and flow velocity, current first enter through the central passage in the body of rod 1 and live
Plug valve 5, the power of now hydraulic pressure collision piston valve 5 sealing gasket be enough to compression elastic piece 6, and elastic component 6 shrinks, and piston valve 5 moves forward, and lives
The low pressure water flow through hole II 501 of plug valve 5 loses the state of insertion with the low pressure water flow through hole I 402 of piston cylinder 4, closes current
Front stand in channel, the valve wall end to piston valve 5 departs from sealing to high-pressure spray hole 401, now, high-pressure spray hole 401 and penetrating
Stream shower nozzle 101 is in, with the central passage of the body of rod 1, the state being mutually communicated, and the current of high pressure through high-pressure spray hole 401 and are penetrated
After stream shower nozzle 101, horizontal high voltage punching is entered to coal seam and make cave.
In addition, the spacer pin 301 after drill bit 8 abrasion it is only necessary on union joint 3, you can quickly complete 8 drill bits more
Change.
The above, be only preferred embodiment of the present utility model, not this utility model is made any formal
Restriction although this utility model is described as above with preferred embodiment, but be not limited to this utility model, any ripe
Know professional and technical personnel, in the range of without departing from technical solutions of the utility model, when available technology contents described above
A little change of making or modify the Equivalent embodiments being equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model, all still
Belong in the range of technical solutions of the utility model.
Claims (6)
1. a kind of high-low pressure current automatic conversion type coal cutting device, carries the body of rod of auger including outer wall（1）And and the body of rod（1）
The drill bit connecting（8）, the body of rod（1）In have for current circulation central passage, the body of rod（1）Along punching direction tail end be provided with many
Individual run through the body of rod（1）Side wall is placed in the fluid jet nozzle in central passage（101）, the body of rod（1）Two ends are provided with female joint
（102）, central passage afterbody and female joint（102）It is raised that joint is provided with annular stop（2）It is characterised in that：Described bar
Body（1）By a union joint（3）With drill bit（8）Connect, union joint（3）One end and the body of rod（1）Head end is threaded, and the other end leads to
The shaft-like connecting portion crossing this end is plugged in drill bit（8）In, and shaft-like connecting portion side wall is provided with for fixed drill bit（8）Spacing
Pin（301）, the body of rod（1）Positioned at union joint（3）Raised with annular stop（2）Between central passage in be provided with high-low pressure current
Switching mechanism；
Described high-low pressure current switching mechanism includes piston cylinder（4）And slip is plugged in piston cylinder（4）Interior piston valve（5）,
Piston cylinder（4）With piston valve（5）It is the cylinder opening wide along the sealing of punching direction head end, tail end, piston cylinder（4）Rear side wall is opened
It is provided with and fluid jet nozzle（101）The high-pressure spray hole being mutually communicated（401）；Piston cylinder（4）Cylinder and central passage between shape
Become low pressure water flow passage（7）, piston cylinder（4）Side wall offer and low pressure water flow passage（7）The low pressure water flow through hole I of connection
（402）, piston valve（5）Side wall offer low pressure water flow through hole II（501）, piston valve（5）By being arranged on piston cylinder（4）Cylinder
Internal elastic component（6）With piston cylinder（4）The diapire of sealed end connects, and in elastic component（6）Under naturalness, low pressure water flow leads to
Hole II（501）With low pressure water flow through hole I（402）It is mutually communicated, and piston valve（5）Valve wall end seal high-pressure spray hole
（401）, and when hydraulic pressure increases, piston valve（5）Reach compression elastic piece（6）Rear enclosed low pressure water flow through hole II（501）, open
High-pressure spray hole（401）.
2. as claimed in claim 1 a kind of high-low pressure current automatic conversion type coal cutting device it is characterised in that：Described piston cylinder
（4）Head end passes through plug（9）Sealing.
3. as claimed in claim 1 a kind of high-low pressure current automatic conversion type coal cutting device it is characterised in that：Described piston cylinder
（4）Two ends be respectively provided with the connection protuberance mated with central passage internal diameter（403）, piston cylinder（4）Positioned at two connection protuberances
（403）Between cylinder external diameter be less than central passage internal diameter, low pressure water flow through hole I（402）It is arranged on piston cylinder（4）Phase on cylinder
Adjacent piston cylinder tail end connection protuberance（403）Position at, high-pressure spray hole（401）It is arranged on the connection protuberance of piston cylinder tail end
（403）On.
4. as claimed in claim 1 a kind of high-low pressure current automatic conversion type coal cutting device it is characterised in that：Described union joint
（3）There is the through hole connecting with central passage.
5. as claimed in claim 1 a kind of high-low pressure current automatic conversion type coal cutting device it is characterised in that：Described drill bit
（8）Inside it is provided with and the body of rod（1）Interior central passage and union joint（3）The cavity for cooling that interior through hole connects
（801）.
6. as claimed in claim 1 a kind of high-low pressure current automatic conversion type coal cutting device it is characterised in that：Described piston cylinder
（4）Opening end at be provided with for limiting piston valve（5）The spacing back-up ring of position（10）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620985536.8U CN205977217U (en) | 2016-08-30 | 2016-08-30 | High low -pressure water flow automatic switching type cuts coal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620985536.8U CN205977217U (en) | 2016-08-30 | 2016-08-30 | High low -pressure water flow automatic switching type cuts coal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205977217U true CN205977217U (en) | 2017-02-22 |
Family
ID=58041948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620985536.8U Active CN205977217U (en) | 2016-08-30 | 2016-08-30 | High low -pressure water flow automatic switching type cuts coal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205977217U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779527A (en) * | 2019-02-19 | 2019-05-21 | 江苏汉威重工科技有限公司 | A kind of broken coal device |
| CN109899063A (en) * | 2019-03-27 | 2019-06-18 | 徐州和润起重设备技术有限公司 | A kind of Efficient safe fluting manipulator and grooving processes |
| CN110331988A (en) * | 2018-12-10 | 2019-10-15 | 贵州大学 | A kind of row's coal formula coal mine digging development machine being convenient for changing drill bit |
| CN112057790A (en) * | 2020-09-11 | 2020-12-11 | 中汽客汽车零部件（厦门）有限公司 | Variable pressure type water mist fire extinguishing device |
-
2016
- 2016-08-30 CN CN201620985536.8U patent/CN205977217U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331988A (en) * | 2018-12-10 | 2019-10-15 | 贵州大学 | A kind of row's coal formula coal mine digging development machine being convenient for changing drill bit |
| CN109779527A (en) * | 2019-02-19 | 2019-05-21 | 江苏汉威重工科技有限公司 | A kind of broken coal device |
| CN109899063A (en) * | 2019-03-27 | 2019-06-18 | 徐州和润起重设备技术有限公司 | A kind of Efficient safe fluting manipulator and grooving processes |
| CN112057790A (en) * | 2020-09-11 | 2020-12-11 | 中汽客汽车零部件（厦门）有限公司 | Variable pressure type water mist fire extinguishing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 467000 South North Ring Road, Pingdingshan City, Henan Province (West of Xinhua Industrial Park) Patentee after: Tiefulai Equipment Manufacturing Group Co.,Ltd. Address before: 467000 South North Ring Road, Pingdingshan City, Henan Province (West of Xinhua Industrial Park) Patentee before: HENAN TIEFULAI EQUIPMENT MANUFACTURING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |