CN206530292U - A kind of spinning water jet Counterboring apparatus - Google Patents
A kind of spinning water jet Counterboring apparatus Download PDFInfo
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- CN206530292U CN206530292U CN201720154718.5U CN201720154718U CN206530292U CN 206530292 U CN206530292 U CN 206530292U CN 201720154718 U CN201720154718 U CN 201720154718U CN 206530292 U CN206530292 U CN 206530292U
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Abstract
A kind of spinning water jet Counterboring apparatus, including the main shaft with central passage, main shaft is in axial direction made up of the pipe joint, limit baffle ring and hollow shaft being made into integration successively from the front to the back, the external diameter of limit baffle ring is more than pipe joint and the external diameter of hollow shaft, sleeve is rotatably connected to by bearing seal assembly in hollow shaft, barrel forward end external screw-thread is connected with rotary nozzle；Limit baffle ring jet guide hole after radially inside direction offers at least three, limit baffle ring rear outside offers the number rear jet orifice equal with rear jet guide hole, and the front end correspondence of rear jet orifice is connected with the outer end of jet guide hole after one.The utility model is used carries out brill reaming by water jet in the way of power and cutting tool, breaking coal, broken rock counter-boring techniques and corresponding device using pure fluidics will be such that the Modern coal mines of China and the production efficiency of oil gas and security is significantly lifted, and also the economic construction for China and safety and stability provide reliable guarantee.
Description
Technical field
The utility model belongs to water jet cutting-tool engineering field, more particularly to a kind of spinning water jet Counterboring apparatus.
Background technology
The colliery of China 95% and substantial amounts of land petroleum resources need to carry out underground mining, by various complicated coal seams and
The limitation of formation geology condition element, exploitation difficulty is big, while the main component of oil gas is first in the gas and rock stratum in coal seam
Alkane, it typically constitutes from 95%-98% or so, in recovery process, especially the exploitation of coal resource, and disaster is extremely serious, serious
Endanger the life and health of the people.Simultaneously because the demand of coal and oil gas can be in any more, the old colliery in part has to extend clothes
The business time limit, increases the exploitation dynamics and intensity in mine, unconventional petroleum resources is also by as the main right of China's oil-gas mining
As, and deep mining can face crustal stress increase, poor air permeability, gas and oil gas release distance length, extraction, emptying difficulty are increased
Even failure etc. various problems.The high-pressure water jet rotary drilling counter-boring techniques used at present are answered to break through rock stratum in reality
Still there is some not enough in：In practical situations both because hydraulic pressure is excessive, rotary speed is too fast so that the atomization of water current of ejection can not
Reach the effect for concentrating broken rock；Because coal seam environment is complicated under ore deposit, it is soft that rock stratum has pine to have, for the circumferential and axial of rotary drilling-head
Load has larger fluctuation, impacts big to inner body so that existing Counterboring apparatus short life, efficiency of breaking rock is low.
In view of the foregoing, to ensure the exploitation safety in actual production, coal rock layer gas and oil gas released strip are improved
Part and raising drill mash gas speed and efficiency, further lift the efficiency of gas and oil gas in extraction process, and send out
A kind of efficient stable water jet Counterboring apparatus and counter-boring techniques outputed will possess very considerable development space and application prospect.
Utility model content
There is provided a kind of spinning water jet Counterboring apparatus in order to solve weak point of the prior art for the utility model.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that：A kind of spinning water jet reaming dress
Put, including the main shaft with central passage, pipe joint, the limiting block of main shaft in axial direction from the front to the back successively by being made into integration
Ring and hollow shaft are constituted, and the external diameter of limit baffle ring, which is more than in pipe joint and the external diameter of hollow shaft, hollow shaft, passes through bearing seal group
Part is rotatably connected to sleeve, and barrel forward end external screw-thread is connected with rotary nozzle, and rotary nozzle front end face is in front fine and rear thick circle
Cone structure；Dynamic and static ring sealing structure is provided between rotary nozzle and hollow shaft；
Rotary nozzle is provided centrally with inside the center of orifices with the coaxial insertion in central passage front end, rotary nozzle along footpath
Jet guide hole before offering at least three to direction, the inner of each preceding jet guide hole is connected with center of orifices, rotary nozzle
Front outsides offer the number preceding jet orifice equal with preceding jet guide hole, and the rear end correspondence of preceding jet orifice is led with a preceding jet
The outer end connection in hole, the center line of the off-center spray orifice of center line of preceding jet orifice, the center line of all preceding jet orifices is with
The center line of heart spray orifice is in 10-30 ° of angle；
Limit baffle ring jet guide hole after radially inside direction offers at least three, limit baffle ring rear outside is offered
The number rear jet orifice equal with rear jet guide hole, the front end correspondence of rear jet orifice is connected with the outer end of jet guide hole after one,
The center line of jet orifice and the center line of center of orifices are in the same plane afterwards, the center line Jun Yu centers of all rear jet orifices
The center line of passage is in 10-30 ° of angle.
Bearing seal assembly includes the rear sealed end being successively set on from the front to the back between sleeve lining and hollow shaft outer wall
Lid, rear rubber back-up ring, rear cylinder roller bearing, rear spacing collar, rear taper roll bearing, front cone roller bearing, front limit circle,
A ring is offered respectively with front side on rear side of preceding cylinder roller bearing, preceding rubber back-up ring and preceding end cover, hollow shaft outer wall
Shape groove, rear rubber back-up ring and preceding rubber back-up ring are separately mounted on front side of hollow shaft and in an annular groove of rear side, sleeve lining
Provided with the annular boss between rear taper roll bearing and front cone roller bearing, rear taper roll bearing and front cone rolling
The equal adjacent rings boss of small end of taper roller in sub- bearing.
The preventing atomization speed-limitation structure contacted with sleeve rear end face top pressure is provided with limit baffle ring；
Preventing atomization speed-limitation structure includes brake pad, regulation spring and regulating bolt, the cylindrical structure of brake pad, brake pad
Length be more than on gap between sleeve and limit baffle ring, limit baffle ring and offer adjustment hole, the center line of adjustment hole is with
The centerline parallel of heart passage, regulation spring and brake pad are arranged in adjustment hole, and regulating bolt is stretched into simultaneously by adjustment hole rear end
Be threadedly coupled in adjustment hole, regulating bolt front end is coordinated by adjusting spring with brake pad rear end top pressure, brake pad front end with
The top pressure contact of sleeve rear end face.
Dynamic and static ring sealing structure includes preloading spring, friction pair stationary ring, friction pair rotating ring and sealing ring, the inwall of hollow shaft
Leading section offers rear ring-shaped step groove, rotary nozzle annular step groove, pretension bullet before center of orifices rear inner wall is offered
Spring and friction pair stationary ring are arranged in rear ring-shaped step groove, and friction pair rotating ring is arranged in preceding annular step groove, after preloading spring
Hold top pressure on the rear end face of rear ring-shaped step groove, preloading spring front end coordinates with friction pair stationary ring rear end top pressure, friction pair is quiet
Ring front end face is sealed with friction pair rotating ring rear end face top pressure to be coordinated；Offered on inner wall of hollow shaft in rear ring-shaped step groove
Seal groove, sealing ring is arranged in seal groove and seals cooperation with the outer wall of friction pair stationary ring；
The inwall of hollow shaft is provided with conical transition structure, conical transition structure in the rear end of rear ring-shaped step groove
In rear thin preceding thick shape, the diameter of the front end face of conical transition structure is less than the external diameter of preloading spring and more than preloading spring
Internal diameter.
Using above-mentioned technical proposal, the utility model has following technique effect：
1st, the utility model be meant to ensure that engineering safety implement on the premise of and efficient pure fluidics break coal, broken rock, it is high
Moulding pipe is connected with pipe joint, and the high-pressure jet from high-pressure hydraulic pump is entered in central passage by high-pressure rubber pipe, water under high pressure
The rear jet guide hole that a stream part will enter in limit baffle ring, and sprayed backward by rear jet orifice, due to rear jet orifice center
Line and central passage center line are in the same plane, limit baffle ring and main shaft is produced the power of rotation, after penetrate
Discharge orifice center line and central passage centerlines are at 13 ° or so, to provide when the utility model advances in reaming procedure
Power, while playing borehole cleaning effect.The another part of High-Pressure Water is entered in the rotary nozzle being connected with barrel forward end
In heart spray orifice, then by center of orifices into preceding jet guide hole, and sprayed forward by preceding jet orifice, due to the center of preceding jet orifice
The center line of the off-center spray orifice of line, and all preceding jet orifices center line with the center line of center of orifices in 10-30 °
Angle, so make a part of water under high pressure preceding jet orifice high speed project can simultaneously serve as making power so that rotary nozzle and with
Connected sleeve rotate at a high speed, form outwards injection and the water jet with revolving force, and then cause this Water Jet Impact
The purpose in cutting and broken coal borer hole is reached into subterranean coal.Rotary nozzle of the present utility model include one it is straight to center
Spray orifice, its axis is overlapped with hollow shaft axis, and the water spraying directions of multiple preceding jet orifices is into whirlwind shape, the High-Pressure Water institute shape of ejection
Normal torque drives rotary nozzle and sleeve to be rotated according to a certain direction around hollow shaft and the high speed in the presence of water under high pressure
Rotation.
2nd, in the presence of High-Pressure Water, rotary nozzle is extruded, hollow shaft will produce axial movement, to ensure hollow shaft
With the sealing of rotary nozzle junction, dynamic and static ring sealing structure is taken in the utility model, preloading spring provides initial pressure,
Friction pair stationary ring front end is set to press friction pair rotating ring rear end face, it is ensured that the sealing of original state, with the increase of pump pressure, due to this
Utility model is provided with conical transition structure in the rear end of the rear ring-shaped step groove of the inwall of hollow shaft, and High-Pressure Water can be pressed
Compel preloading spring, increase the elastic force of preloading spring, preloading spring makes friction pair stationary ring front end further press after friction pair rotating ring
End face, with the increase of pump pressure, the pressure that friction pair stationary ring is subject to is bigger, the contact between friction pair stationary ring and friction dynamic and static ring
Pressure on face is bigger, and sealability is stronger, it is to avoid leak.
3rd, the utility model is provided with a kind of with preventing atomization speed-limitation structure, and it is intended to prevent jet atomization and strengthens carrying
Ability and service life, with the durability of effective lifting device, and then significantly lift efficiency of breaking rock.In actual working state
In due to hydraulic pressure it is excessive, rotary speed is too fast so that the atomization of water current of ejection be unable to reach concentrate broken rock effect.Therefore according to
Demand in production application, and easy to operate and safe and adjustable speed principle is followed, the utility model is designed with addition
The structure of brake pad friction eceleration makees deceleration processing to sleeve：Between friction block length is far longer than between limit baffle ring and sleeve
Gap, while making brake pad be snug against in sleeve rear end surface.Internal brake pad is simultaneously by regulating bolt by adjusting spring
Pretension is carried out, by the change to adjusting screw bolt pretightening force, so as to effectively change the rotation speed of sleeve and rotary nozzle
Degree.
4th, complicated for coal seam environment under ore deposit, it is soft that rock stratum has pine to have, and the circumferential and axial load for rotary nozzle has
Larger fluctuation, impacts big to inner body so that existing Counterboring apparatus short life, the problem of efficiency of breaking rock is low, this practicality
It is new to reduce Counterboring apparatus overall dimensions in line with trying one's best, the functional principle of the stress concentration of main parts on shaft is eliminated, conjunction is designed
Suitable structure makes its Inner Constitution more rationally lift its operating efficiency to strengthen its bearing capacity and service life and then add：
Hollow shaft outer surface sets annular groove to be used for installing preceding rubber back-up ring and rear rubber back-up ring, reaches that the isolation of device inner body subtracts
Shake effect.A pair of taper roll bearings and a pair of cylinder roller bearings, circle are used between preceding rubber back-up ring and rear rubber back-up ring
The small end of taper roller bearing is contacted with the annular boss of sleeve interior surface, the axially position to sleeve is realized, while both axles
Hold, middle front limit circle and rear spacing collar collective effect realize the circumferentially positioned of sleeve.The apparent size of two kinds of bearings all compared with
It is small, it is effective to ensure the compact of Counterboring apparatus internal structure.The centering of cylinder roller bearing is strong, and bearing capacity is strong, and outer ring can
There is certain axial changing of the relative positions with inner ring, when load is mutated, the changing of the relative positions of inner ring and outer ring can effectively avoid the damage of part
It is bad.Taper roll bearing can bear two kinds of load of axial and circumferential simultaneously, and bearing capacity is strong to mitigate roller bearing receipts simultaneously
The shock loading arrived, it is ensured that the positioning of bearing is reliable and service life.
In summary, the utility model compact conformation, is used and is bored by water jet in the way of power and cutting tool
Reaming, the Modern coal mines of China and opening for oil gas will be made by breaking coal, broken rock counter-boring techniques and corresponding device using pure fluidics
Adopt efficiency and security is significantly lifted, also the economic construction for China and safety and stability provide reliable guarantee.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in figure 1, a kind of spinning water jet Counterboring apparatus of the present utility model, including the master with central passage 1
Axle, main shaft is in axial direction made up of the pipe joint 2, limit baffle ring 3 and hollow shaft 4 being made into integration successively from the front to the back, spacing
The external diameter of baffle ring 3 is more than in pipe joint 2 and the external diameter of hollow shaft 4, hollow shaft 4 is rotatably connected to sleeve by bearing seal assembly
5, the front end external screw-thread of sleeve 5 is connected with rotary nozzle 6, and the front end face of rotary nozzle 6 is in front fine and rear thick part pyramid like configuration；Rotation
Dynamic and static ring sealing structure is provided between shower nozzle 6 and hollow shaft 4.
Rotary nozzle 6 is provided centrally with inside the center of orifices 7 with the coaxial insertion in the front end of central passage 1, rotary nozzle 6
Jet guide hole 8 before radially offering at least three, the inner of each preceding jet guide hole 8 is connected with center of orifices 7, is revolved
Turn the front outsides of shower nozzle 6 and offer the number preceding jet orifice 9 equal with preceding jet guide hole 8, the rear end correspondence and one of preceding jet orifice 9
The outer end connection of individual preceding jet guide hole 8, the center line of the off-center spray orifice 7 of center line of preceding jet orifice 9, all preceding jet orifices 9
Center line with the center line of center of orifices 7 be in 10-30 ° of angle.
The jet guide hole 10 after radially inside direction offers at least three of limit baffle ring 3, the rear outside of limit baffle ring 3 is opened
Provided with the number rear jet orifice 11 equal with rear jet guide hole 10, the front end correspondence of rear jet orifice 11 with one after jet guide hole 10
Outer end connection, the center line and the center line of center of orifices 7 of rear jet orifice 11 be in the same plane, all rear jet orifices 11
Center line with the center line of central passage 1 be in 10-30 ° of angle.
Bearing seal assembly includes the rear sealing being successively set on from the front to the back between the inwall of sleeve 5 and the outer wall of hollow shaft 4
End cap 12, rear rubber back-up ring 13, rear cylinder roller bearing 14, rear spacing collar 15, rear taper roll bearing 16, front cone Roller Shaft
Hold on rear side of 17, front limit circle 18, preceding cylinder roller bearing 19, preceding rubber back-up ring 20 and preceding end cover 21, the outer wall of hollow shaft 4
Offer an annular groove respectively with front side, rear rubber back-up ring 13 and preceding rubber back-up ring 20 be separately mounted to the front side of hollow shaft 4 and
In one annular groove of rear side, the inwall of sleeve 5, which is provided with, to be located between rear taper roll bearing 16 and front cone roller bearing 17
Annular boss 22, the equal adjacent rings of small end of rear taper roll bearing 16 and the taper roller in front cone roller bearing 17 are convex
Platform 22.
The preventing atomization speed-limitation structure contacted with the rear end face top pressure of sleeve 5 is provided with limit baffle ring 3；Preventing atomization speed-limitation structure
Including brake pad 23, regulation spring 24 and regulating bolt 25, the cylindrical structure of brake pad 23, the length of brake pad 23 is more than set
Adjustment hole, center line and the central passage 1 of adjustment hole are offered on gap between cylinder 5 and limit baffle ring 3, limit baffle ring 3
Centerline parallel, regulation spring 24 and brake pad 23 are arranged in adjustment hole, and regulating bolt 25 is stretched into and spiral shell by adjustment hole rear end
Line is connected in adjustment hole, and the front end of regulating bolt 25 is coordinated by adjusting spring 24 with the rear end top pressure of brake pad 23, brake pad 23
Front end is contacted with the rear end face top pressure of sleeve 5.
Dynamic and static ring sealing structure includes preloading spring 26, friction pair stationary ring 27, friction pair rotating ring 28 and sealing ring 29, hollow
The inwall leading section of axle 4 offers rear ring-shaped step groove, the annular table before the rear inner wall of center of orifices 7 is offered of rotary nozzle 6
Rank groove, preloading spring 26 and friction pair stationary ring 27 are arranged in rear ring-shaped step groove, and friction pair rotating ring 28 is arranged on preceding annular table
In rank groove, the rear end top pressure of preloading spring 26 is on the rear end face of rear ring-shaped step groove, the front end of preloading spring 26 and friction pair stationary ring
27 rear end top pressures coordinate, and the front end face of friction pair stationary ring 27 is sealed with the rear end face top pressure of friction pair rotating ring 28 to be coordinated；The inwall of hollow shaft 4
On offer the seal groove in rear ring-shaped step groove, sealing ring 29 is arranged on outer in seal groove and with friction pair stationary ring 27
Wall sealing coordinates.
The inwall of hollow shaft 4 is provided with conical transition structure 30, conical transition in the rear end of rear ring-shaped step groove
Structure 30 is less than the external diameter of preloading spring 26 and is more than in rear thin preceding thick shape, the diameter of the front end face of conical transition structure 30
The internal diameter of preloading spring 26.
The utility model be meant to ensure that engineering safety implement on the premise of and efficient pure fluidics break coal, broken rock, high pressure
Sebific duct is connected with pipe joint 2, and the high-pressure jet from high-pressure hydraulic pump is entered in central passage 1 by high-pressure rubber pipe, water under high pressure
The rear jet guide hole 10 that a stream part will enter in limit baffle ring 3, and sprayed backward by rear jet orifice 11, due to rear jet orifice
11 center lines and the center line of central passage 1 are in the same plane, limit baffle ring 3 and main shaft is produced the dynamic of rotation
Power, the rear center line of jet orifice 11 and the centerlines of central passage 1 are at 13 ° or so, to provide the utility model in reaming procedure
Power during middle advance, while playing borehole cleaning effect.The another part of High-Pressure Water enters the rotation being connected with the front end of sleeve 5
Turn in the center of orifices 7 of shower nozzle 6, then preceding jet guide hole 8 is entered by center of orifices 7, and sprayed forward by preceding jet orifice 9, by
Sprayed in the center line Jun Yu centers of the center line of the off-center spray orifice 7 of the center line of preceding jet orifice 9, and all preceding jet orifices 9
The center line in hole 7 is in 10-30 ° of angle, a part of water under high pressure is projected in the preceding high speed of jet orifice 9 and can simultaneously serve as
Make power so that rotary nozzle 6 and the sleeve 5 being attached thereto rotate at a high speed, formation is outwards sprayed and the water-jet with revolving force
Stream, and then cause this Water Jet Impact to reach the purpose in cutting and broken coal borer hole into subterranean coal.Rotation of the present utility model
Turn shower nozzle 6 including one it is straight to center of orifices 7, its axis overlaps with the axis of hollow shaft 4, the water spray of multiple preceding jet orifices 9
Direction forms normal direction torque and drives rotary nozzle 6 and sleeve 5 around hollow shaft 4 according to one into whirlwind shape, the High-Pressure Water of ejection
Fixed direction rotates and rotated at a high speed in the presence of water under high pressure.
In the presence of High-Pressure Water, rotary nozzle 6 is extruded, hollow shaft 4 will produce axial movement, to ensure hollow shaft
4 and the sealing of the junction of rotary nozzle 6, dynamic and static ring sealing structure is taken in the utility model, and preloading spring 26 is provided initially
Pressure, makes the front end of friction pair stationary ring 27 press the rear end face of friction pair rotating ring 28, it is ensured that the sealing of original state, with the increasing of pump pressure
Greatly, the rear end due to the utility model in the rear ring-shaped step groove of the inwall of hollow shaft 4 is provided with conical transition structure 30,
High-Pressure Water can oppress preloading spring 26, increase the elastic force of preloading spring 26, and preloading spring 26 enters the front end of friction pair stationary ring 27
One step presses the rear end face of friction pair rotating ring 28, with the increase of pump pressure, and the pressure that friction pair stationary ring 27 is subject to is bigger, and friction pair is quiet
The pressure on contact surface between ring 27 and friction dynamic and static ring is bigger, and sealability is stronger, it is to avoid leak.
The utility model is provided with a kind of with preventing atomization speed-limitation structure, and it is intended to prevent jet atomization and strengthens carrying energy
Power and service life, with the durability of effective lifting device, and then significantly lift efficiency of breaking rock.In actual working state
Because hydraulic pressure is excessive, rotary speed is too fast so that the atomization of water current of ejection is unable to reach the effect for concentrating broken rock.Therefore according in reality
Demand in the production application of border, and easy to operate and safe and adjustable speed principle is followed, the utility model is designed to be rubbed with addition
The structure of the friction eceleration of cleaning block 23 makees deceleration processing to sleeve 5：The length of brake pad 23 be far longer than limit baffle ring 3 and sleeve 5 it
Between gap, while making brake pad 23 be snug against in the rear end surface of sleeve 5.Internal brake pad 23 is simultaneously by regulating bolt 25
Pretension is carried out by adjusting spring 24, by the change to the pretightning force size of regulating bolt 25, so as to effectively change the He of sleeve 5
The rotary speed of rotary nozzle 6.
Complicated for coal seam environment under ore deposit, it is soft that rock stratum has pine to have, for rotary nozzle 6 circumferential and axial load have compared with
Big fluctuation, impacts big to inner body so that existing Counterboring apparatus short life, the problem of efficiency of breaking rock is low, and this practicality is newly
Type eliminates the functional principle of the stress concentration of main parts on shaft in line with Counterboring apparatus overall dimensions are reduced as far as possible, and it is suitable to design
Structure make its Inner Constitution more rationally with strengthen its bearing capacity and service life so that add lifted its operating efficiency：In sky
The outer surface of heart axle 4 set annular groove be used for preceding rubber back-up ring 20 and rear rubber back-up ring 13 are installed, reach device inner body every
From damping effect.A pair of taper roll bearings and a pair of cylindrical rollers are used between preceding rubber back-up ring 20 and rear rubber back-up ring 13
Bearing, the small end of taper roll bearing is contacted with the annular boss 22 of the inner surface of sleeve 5, realizes the axially position to sleeve 5, together
When both bearings, middle front limit circle 18 and the collective effect of rear spacing collar 15 realize the circumferentially positioned of sleeve 5.Two kinds of bearings
Apparent size it is all smaller, it is effective to ensure the compact of Counterboring apparatus internal structure.The centering of cylinder roller bearing is strong, carrying
Ability is strong, and outer ring can have certain axial changing of the relative positions with inner ring, and when load is mutated, the changing of the relative positions of inner ring and outer ring can be effective
The damage for avoiding part.Taper roll bearing can bear two kinds of load of axial and circumferential, the strong energy simultaneously of bearing capacity simultaneously
Mitigate the shock loading that receives of roller bearing, it is ensured that the positioning of bearing is reliable and service life.
The present embodiment not makees any formal limitation, every foundation to shape of the present utility model, material, structure etc.
Any simple modification, equivalent variations and modification that technical spirit of the present utility model is made to above example, belong to this reality
With the protection domain of new technique scheme.
Claims (4)
1. a kind of spinning water jet Counterboring apparatus, it is characterised in that：Including the main shaft with central passage, main shaft is square vertically
To being made up of successively the pipe joint, limit baffle ring and hollow shaft being made into integration from the front to the back, the external diameter of limit baffle ring connects more than pipe
Sleeve, the connection of barrel forward end external screw-thread are rotatably connected to by bearing seal assembly in the external diameter of head and hollow shaft, hollow shaft
There is rotary nozzle, rotary nozzle front end face is in front fine and rear thick part pyramid like configuration；It is provided between rotary nozzle and hollow shaft dynamic
Stationary ring sealing structure；
Rotary nozzle is provided centrally with the center of orifices with the coaxial insertion in central passage front end, and rotary nozzle is radially inside square
The jet guide hole to before offering at least three, the inner of each preceding jet guide hole is connected with center of orifices, and rotary nozzle is anterior
Outside offers the number preceding jet orifice equal with preceding jet guide hole, the rear end correspondence of preceding jet orifice and preceding jet guide hole
Outer end is connected, the center line of the off-center spray orifice of center line of preceding jet orifice, the center line Jun Yu centers spray of all preceding jet orifices
The center line in hole is in 10-30 ° of angle；
Limit baffle ring jet guide hole after radially inside direction offers at least three, limit baffle ring rear outside offers number
The rear jet orifice equal with rear jet guide hole, rear jet orifice front end correspondence is connected with the outer end of jet guide hole after one, after penetrate
The center line of discharge orifice and the center line of center of orifices are in the same plane, and the center line of all rear jet orifices is and central passage
Center line be in 10-30 ° of angle.
2. a kind of spinning water jet Counterboring apparatus according to claim 1, it is characterised in that：Bearing seal assembly includes
Rear end cover, rear rubber back-up ring, rear cylindrical roller between sleeve lining and hollow shaft outer wall are successively set on from the front to the back
Bearing, rear spacing collar, rear taper roll bearing, front cone roller bearing, front limit circle, preceding cylinder roller bearing, preceding rubber stop
An annular groove, rear rubber back-up ring and preceding rubber are offered respectively with front side on rear side of circle and preceding end cover, hollow shaft outer wall
Back-up ring is separately mounted on front side of hollow shaft and in an annular groove of rear side, sleeve lining be provided be located at rear taper roll bearing and
Taper roller in annular boss between front cone roller bearing, rear taper roll bearing and front cone roller bearing it is smaller
Hold equal adjacent rings boss.
3. a kind of spinning water jet Counterboring apparatus according to claim 1 or 2, it is characterised in that：Set on limit baffle ring
It is equipped with the preventing atomization speed-limitation structure contacted with sleeve rear end face top pressure；
Preventing atomization speed-limitation structure includes brake pad, regulation spring and regulating bolt, the cylindrical structure of brake pad, the length of brake pad
Degree, which is more than on the gap between sleeve and limit baffle ring, limit baffle ring, offers adjustment hole, and center line and the center of adjustment hole lead to
The centerline parallel in road, regulation spring and brake pad are arranged in adjustment hole, and regulating bolt is stretched into and screw thread by adjustment hole rear end
It is connected in adjustment hole, regulating bolt front end is coordinated by adjusting spring with brake pad rear end top pressure, brake pad front end and sleeve
Rear end face top pressure is contacted.
4. a kind of spinning water jet Counterboring apparatus according to claim 1 or 2, it is characterised in that：Dynamic and static ring sealing knot
Structure includes preloading spring, friction pair stationary ring, friction pair rotating ring and sealing ring, and the inwall leading section of hollow shaft offers rear annular table
Rank groove, rotary nozzle annular step groove before center of orifices rear inner wall is offered, preloading spring and friction pair stationary ring are arranged on
Afterwards in ring-shaped step groove, friction pair rotating ring is arranged in preceding annular step groove, and preloading spring rear end top pressure is in rear ring-shaped step groove
Rear end face on, preloading spring front end coordinates with friction pair stationary ring rear end top pressure, friction pair stationary ring front end face and friction pair rotating ring
The sealing of rear end face top pressure coordinates；The seal groove in rear ring-shaped step groove is offered on inner wall of hollow shaft, sealing ring is arranged on
Cooperation is sealed in seal groove and with the outer wall of friction pair stationary ring；
The inwall of hollow shaft is provided with conical transition structure in the rear end of rear ring-shaped step groove, after conical transition structure is in
Thick shape before thin, the diameter of the front end face of conical transition structure is less than the external diameter of preloading spring and is more than the interior of preloading spring
Footpath.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720154718.5U CN206530292U (en) | 2017-02-21 | 2017-02-21 | A kind of spinning water jet Counterboring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720154718.5U CN206530292U (en) | 2017-02-21 | 2017-02-21 | A kind of spinning water jet Counterboring apparatus |
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| CN206530292U true CN206530292U (en) | 2017-09-29 |
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| CN201720154718.5U Expired - Fee Related CN206530292U (en) | 2017-02-21 | 2017-02-21 | A kind of spinning water jet Counterboring apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869794A (en) * | 2017-02-21 | 2017-06-20 | 河南理工大学 | A kind of water jet Counterboring apparatus with efficient and preventing atomization stabilization |
| CN108672125A (en) * | 2018-07-12 | 2018-10-19 | 中华人民共和国日照出入境检验检疫局 | Uniform method is sprayed in coal dust automatic spraying equipment and realization |
| CN108854359A (en) * | 2018-07-12 | 2018-11-23 | 中华人民共和国日照出入境检验检疫局 | A kind of coal dust high effect dust cleaner |
| CN113944431A (en) * | 2021-12-20 | 2022-01-18 | 成都迪普金刚石钻头有限责任公司 | Hydraulic auxiliary rock breaking PDC drill bit and auxiliary rock breaking method |
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2017
- 2017-02-21 CN CN201720154718.5U patent/CN206530292U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869794A (en) * | 2017-02-21 | 2017-06-20 | 河南理工大学 | A kind of water jet Counterboring apparatus with efficient and preventing atomization stabilization |
| CN108672125A (en) * | 2018-07-12 | 2018-10-19 | 中华人民共和国日照出入境检验检疫局 | Uniform method is sprayed in coal dust automatic spraying equipment and realization |
| CN108854359A (en) * | 2018-07-12 | 2018-11-23 | 中华人民共和国日照出入境检验检疫局 | A kind of coal dust high effect dust cleaner |
| CN113944431A (en) * | 2021-12-20 | 2022-01-18 | 成都迪普金刚石钻头有限责任公司 | Hydraulic auxiliary rock breaking PDC drill bit and auxiliary rock breaking method |
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