A kind of screw connected drilling rod of high-pressure-resistant sealed Double helix
This utility model relates to coal mine equipment field, is specially a kind of screw connected drilling rod of high-pressure-resistant sealed Double helix.
During coal production, in order to prevent gas burst accident, needed in coal seam, beat extraction hole before driving
Gas in coal seam is discharged, eliminates the internal stress in coal seam.It is presently mainly drilling deep hole in coal seam, then utilizes height
Pressure water jet washes away coal body, thus forms a cave, which increases the area of Gas, so that coal seam realizes fast
Speed release.During coal bed drift face construction at present, drilling rod used is to use the Three-edged drill stem of taper thread connection or employing to insert mostly
Connect the auger stem of formula.The Three-edged drill stem that taper thread connects relies on the interference fit of screw thread to realize the connection between drilling rod and drilling rod
And sealing, but the drilling rod normally only utilizing taper thread to seal can only bear the hydraulic pressure of 0.3-5MPa, adds and constantly dismantled
The abrasion of screw thread in journey, sealing may be worse and worse；Water need to be utilized to arrange when using Three-edged drill stem to bore near-horizontal hole
Slag, can make tunnel hydrops during drilling, and working environment is severe.But when using plug-in type auger stem, although brill can be relied on
Bar self deslagging, it is not necessary to ventilate or water, but drill and make cave with punching and can not be carried out continuously, need to change high voltage bearing after holing
Punching drilling rod is punched out, and this process consumes my material resources of substantial amounts of manpower so that tunnelling is slow, is unfavorable for that colliery is efficiently opened
Utility model content
In order to solve the problems referred to above, the purpose of this utility model is to propose a kind of sealing energy consumption, lightweight, drilling diameter
Greatly, intensity is high and self has the screw connected drilling rod of high-pressure-resistant sealed Double helix of deslagging function.
The technical scheme that this utility model is taked to solve the problems referred to above is: a kind of high-pressure-resistant sealed Double helix screw thread
Interconnection system drilling rod, the male joint including drilling rod body and being separately positioned on drilling rod body two ends and female joint, drilling rod is provided with spiral shell
Rotation vane group, described helical blade set is by the helical blade I being separately positioned on drilling rod body and female joint periphery and helical-blade
Sheet II is constituted, and the vane thickness of helical blade II is more than the vane thickness of helical blade I, and described male joint includes the company of truncated cone-shaped
Junctor and be arranged on the seal head of connector miner diameter end, connector and seal head have through drilling rod passage, and connector
On be provided with external screw thread, described female joint is one with the cylinder of inner chamber, and being provided with in the bottom of female joint inner chamber can be with close
The annular seal space that end socket matches, female joint inwall between annular seal space and external port is provided with and external screw thread phase on connector
The female thread joined, described annular seal space inwall is embedded with the sealing ring for sealing seal head.
Preferably, connect for transition between described helical blade I and helical blade II, and helical blade I and helical blade
Continuous print helical duct is formed between II.
Preferably, described sealing ring is rubber seal.
Compared with prior art, this utility model has the advantages that
First, a kind of screw connected drilling rod of high-pressure-resistant sealed Double helix described in the utility model, female joint has
Thicker helical blade II, between enhancing drilling rod while the intensity of junction, also overcomes joint area between drilling rod connection and exists
The shortcoming being easily deformed under high torque effect, in addition, double-helical structure makes drilling rod surface form complete continuous print spiral shell
Rotation passage, is effectively increased the effect of coal dust deslagging.
Second, a kind of screw connected drilling rod of high-pressure-resistant sealed Double helix described in the utility model, with general circular arc
Shape drilling rod or Three-edged drill stem are compared, and alleviate drilling rod weight, increase drilling diameter, have saved coal bed drilling cost, meanwhile, public
Junction between female joint has the high voltage bearing seal head of energy and annular seal space, is effectively increased the pressure performance of drilling rod, even
The continuous driving face that carries out creeps into when making cave operation with punching, it is not necessary to frequently change drilling rod, time-consuming, alleviates workman's work
Intensity, reduces the cost of coal mining.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model a kind of high-pressure-resistant sealed screw connected drilling rod of Double helix；
Labelling in figure: 1, drilling rod body, 2, male joint, 201, connector, 202, seal head, 3, female joint, 301, annular seal space,
302, sealing ring, 4, helical blade I, 5, helical blade II.
Detailed description of the invention
Elaborating this utility model with specific embodiment below in conjunction with the accompanying drawings, the present embodiment is with this utility model skill
Premised on art scheme, give detailed embodiment and concrete operating process.
As it is shown in figure 1, this utility model is a kind of screw connected drilling rod of high-pressure-resistant sealed Double helix, including drilling rod body 1
And it being separately positioned on male joint 2 and the female joint 3 at drilling rod body 1 two ends, male joint 2 and female joint 3 are respectively welded at drilling rod body 1
Two ends, drilling rod is provided with helical blade set, described helical blade set is by being separately positioned on drilling rod body 1 and female joint 3 circumference
Helical blade I 4 and helical blade II 5 on face are constituted, and helical blade II 5 is process in female joint 3, helical blade II
5 are structure as a whole with female joint 3, and helical blade I 4 is arranged on drilling rod body 1 by welding, the vane thickness of helical blade II 5
More than the vane thickness of helical blade I 4, described male joint 2 includes the connector 201 of truncated cone-shaped and is arranged on connector 201
The seal head 202 of miner diameter end, connector 201 and seal head 202 have through drilling rod passage, and are provided with on connector 201
For the external screw thread being connected with female joint 3, described female joint 3 is one with the cylinder of inner chamber, in the bottom of female joint 3 inner chamber
Being provided with the annular seal space 301 that can match with seal head 202, the female joint 3 inwall between annular seal space 301 and external port sets
The female thread matched with external screw thread on connector 201, described annular seal space 301 inwall is had to be embedded with for sealing seal head 202
Sealing ring 302, after male joint 2 and female joint 3 connect, the seal head 202 of male joint 2 end is sealed by sealing ring 302.
It is more than basic embodiment of the present utility model, can be improved further, optimize or limit on the basis of above
Further, connect for transition between described helical blade I 4 and helical blade II 5, and helical blade I 4 and spiral
Continuous print and the helical duct of through stem is formed between blade II 5.
Further, described sealing ring 302 is rubber seal.
The above, be only preferred embodiment of the present utility model, not this utility model is made any in form
Restriction, although this utility model describes as above with preferred embodiment, but is 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
The a little change made or modification are the Equivalent embodiments of 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, the most still
Belong in the range of technical solutions of the utility model.