Entwining tube spigot-and-socket joint
Technical field
The present invention relates to pipe joint field, be specifically related to a kind of entwining tube spigot-and-socket joint.
Background technique
Polyethylene plastic-steel winding pipe (SRWPE) welds (welding extruded by faying surface) by the heterotypic strip of steel plastic compount through spiral winding to make, and its inner wall smooth is smooth, and specification is DN200-DN3000mm.This kind of tubing has corrosion-resistant, quality light, simple installation, through-current capacity are large, the life-span is long advantages such as (50 years), the tubing that alternative high energy consumption material (cement, cast iron, pottery etc.) makes, genus environment-friendly product.
Be interconnected between polyethylene plastic-steel winding pipe in the past and adopt various pipe joint to connect, but many jointings are not starved and can be well connected and sealed, after connecting, joint leakage phenomenon will be there is in the short time, but the joint cost of some good sealing effects is too high, can not well be promoted the use of.
As Chinese Patent Application No. 201220003239.0, disclose a kind of pipe connected for polyethylene plastic-steel winding pipe
Joint, it comprises spiral pipe body, is separately fixed at the plug-in unit sleeve pipe outside spiral pipe body two ends and socket joint sleeve pipe, inserts
Part sleeve pipe is made up of the first volute and the first straight tube, has to match with evagination spiral and rotation direction is identical inside the first volute
Spiral grooves, and between the first volute and the first straight tube, be provided with the first flange projection, the first volute screws and fixes
In one end of spiral pipe body; Socket joint sleeve pipe is made up of the second volute and the second straight tube, the external diameter of the first straight tube be less than or
Equal the internal diameter of the second straight tube.Although above-mentioned patent is by spiral pipe body two ends port and socket joint sleeve pipe and plug-in unit poverty pipe
Junction adopts sweat soldering Placement respectively, improves the sealing of product, but its first volute and the second spiral
Pipe is respectively equipped with the spiral grooves coordinated with plastic-steel spirally-wound pipe, makes the first volute and the second spiral by this spiral grooves
Pipe screws with spiral pipe body respectively and is connected, and therefore this pipe joint is only applicable to the plastic-steel spirally-wound pipe with identical screw thread, knot
Structure is complicated, and processing cost is high.
And for example Chinese Patent Application No. 201220614450.6, discloses a kind of self-locking connected for plastic-steel spirally-wound pipe
Pipe joint, comprises plug-in unit sleeve pipe and socket joint sleeve pipe, and plug-in unit sleeve pipe comprises the first threaded pipe and the first straight tube, and socket joint sleeve pipe comprises
Two threaded pipes and the second straight tube; The first described threaded pipe and the second threaded pipe are provided with coordinate with plastic-steel spirally-wound pipe outside thread three
Head thread; The port of the first straight tube is provided with one group of buckle coordinated with the second straight tube.Although above-mentioned patent is at the first straight tube
Port is provided with one group of buckle coordinated with the second straight tube, solves the problem that existing pipe joint intensity is bad, but this kind of pipe
Joint difficulty of processing is large, and die manufacturing cost is high, and weight is large, and especially this pipe joint is once pin and occur leaking or other hair
Time sick, joint cannot unload, and only has destruction joint just can deal with problems, directly causes the increase of cost.
Summary of the invention
In order to solve the problem, the present invention proposes a kind of entwining tube spigot-and-socket joint, simplicity of design is ingenious, and cost is low, easy to connect, and intensity is high, and can effectively seal, effective, durable, and long service life can be promoted the use of.
In order to reach foregoing invention object, the present invention proposes following technological scheme:
Entwining tube spigot-and-socket joint, comprise outer tube and interpolation pipe, connect in one end that interpolation pipe one end is inserted in outer tube, between interpolation pipe and outer tube, seal ring is housed, the other end of outer tube rotates and is fixedly connected with entwining tube, and the other end of interpolation pipe rotates and is fixedly connected with entwining tube.
Described outer tube comprises spin mouth and interface, spin mouth and interface links into an integrated entity, the mouth that spins is cylindric, has annular groove inside the mouth that spins, and the annular boss of annular groove outer end has three skewed slots, 120 degree, interval between three skewed slots, interface profile is horn-like, and inside is cylindrical channel, and cylindrical channel has circular groove near oral area, have annular slot in the middle of circular groove inwall, the necking end of interface connects without skewed slot end with the one end of the mouth that spins.
Described outer tube comprises spin mouth and interface, spin mouth and interface links into an integrated entity, the mouth that spins is cylindric, spin inside mouth and have annular groove, the annular boss of annular groove outer end has three skewed slots, 120 degree, interval between three skewed slots, interface profile is cylindric, inside is cylindrical channel, and cylindrical channel rises near oral area Inner annular groove, and the other end ringless-type groove ends of interface connects without skewed slot end with the one end of the mouth that spins.
Described interpolation pipe comprises spin mouth and interface, spin mouth and interface links into an integrated entity, the mouth that spins is cylindric, spin inside mouth and have annular groove, the annular boss of annular groove outer end has three skewed slots, 120 degree, interval between three skewed slots, described interface is cylindric, be designed with ramp shaped boss outside interface one end, have annular chamfer outside the other end, the ramp shaped boss end of interface connects without skewed slot end with the one end of the mouth that spins.
Described seal ring comprises circle body, pawl, annular fixture block and collar stop, circle body is cylindric, be designed with pawl respectively in the middle of inside circle body and near end position, the neutral position, outside of circle body is designed with annular fixture block, is designed with collar stop outside the other end of circle body.
Described seal ring comprises circle body and pawl, is semicircle shape outside circle body, is cylindric inside circle body, is designed with pawl respectively inside circle body near end positions.
Described outer tube and interpolation pipe are all that polyethylene die sinking integrated through injection molding is formed.
Advantage of the present invention is that simplicity of design is ingenious, and entwining tube is convenient and fast connection, and by this apparatus structure particular design, special Placement, can effectively seal, No leakage, joint cost is low, durable, intensity is high, long service life, can promote the use of well; The pawl design of seal ring can effectively prevent pipeline from expanding or contraction deformation produces leakage phenomenon, and pipe joint not easily gets loose; Three skewed slot designs of the mouth that spins of outer tube and interpolation pipe make three of entwining tube steel bands just can effectively precession spin in mouth, by stabilizer or PE polyethylene resin (or other bulking agents), injecting glue sealing is carried out to both sides inside and outside the annular groove spun in mouth again, convenient and swift, and good sealing effect, cost is low.
Accompanying drawing explanation
Fig. 1 is schematic diagram one of the present invention.
Fig. 2 is schematic diagram two of the present invention.
Fig. 3 is the schematic diagram one of seal ring of the present invention.
Fig. 4 is the schematic diagram two of seal ring of the present invention.
Fig. 5 is the schematic diagram of interpolation pipe of the present invention.
Fig. 6 is the schematic diagram one of outer tube of the present invention.
Fig. 7 is the schematic diagram two of outer tube of the present invention.
Embodiment
In order to the present invention is further described, introduce below in conjunction with Figure of description:
With reference to accompanying drawing 1-2, entwining tube spigot-and-socket joint, comprise outer tube 1 and interpolation pipe 2, connect in one end that interpolation pipe 2 one end is inserted in outer tube 1, seal ring 3 is housed between interpolation pipe 2 and outer tube 1, the other end of outer tube 1 rotates and is fixedly connected with entwining tube, and the other end of interpolation pipe 2 rotates and is fixedly connected with entwining tube 4.
With reference to Fig. 6, described outer tube 1 comprises spin mouth 11 and interface 12, spin mouth 11 and interface 12 links into an integrated entity, the mouth 11 that spins is cylindric, spin inside mouth 11 and have annular groove 13, the annular boss 14 of annular groove 13 outer end has three skewed slots 15,120 degree, interval between three skewed slots 15, interface 12 profile is horn-like, inside is cylindrical channel, cylindrical channel has circular groove 16 near oral area, and have annular slot 17 in the middle of circular groove 16 inwall, the necking end of interface 12 connects without skewed slot end with the one end of the mouth 11 that spins.
With reference to Fig. 7, described outer tube 1 comprises spin mouth 11 and interface 12, spin mouth 11 and interface 12 links into an integrated entity, the mouth 11 that spins is cylindric, spin inside mouth 11 and have annular groove 13, the annular boss 14 of annular groove 13 outer end has three skewed slots 15,120 degree, interval between three skewed slots 15, interface 12 profile is cylindric, inside is cylindrical channel, cylindrical channel rises near oral area Inner annular groove 18, and the other end ringless-type groove ends of interface 12 connects without skewed slot end with the one end of the mouth 11 that spins.
With reference to Fig. 5, described interpolation pipe 2 comprises spin mouth 21 and interface 22, spin mouth 21 and interface 22 links into an integrated entity, the mouth 21 that spins is cylindric, spin inside mouth 21 and have annular groove 23, the annular boss 24 of annular groove 23 outer end has three skewed slots 25,120 degree, interval between three skewed slots 25, described interface 22 is cylindric, interface 22 is designed with ramp shaped boss 26 outside one end, have annular chamfer 27 outside the other end, the ramp shaped boss end of interface 22 connects without skewed slot end with the one end of the mouth 21 that spins.The interface design annular chamfer of interpolation pipe is in the convenient interface inserting outer tube of interface of conveniently interpolation pipe.
With reference to Fig. 3, described seal ring 3 comprises circle body 31, pawl 32, annular fixture block 33 and collar stop 34, circle body 31 is cylindric, pawl 32 is designed with respectively in the middle of inside circle body 31 and near end position, the neutral position, outside of circle body 31 is designed with annular fixture block 33, is designed with collar stop 34 outside the other end of circle body 31.
With reference to Fig. 4, described seal ring 3 comprises circle body 31 and pawl 32, is semicircle shape outside circle body 31, is designed with pawl 32 respectively inside circle body 31 near end positions.
Described outer tube 1 and interpolation pipe 2 are all that polyethylene die sinking integrated through injection molding is formed.
See figures.1.and.2, when the present invention uses, outer tube and interpolation pipe are spun on entwining tube outer end respectively by the mouth that spins at two ends, then by carrying out injecting glue sealing to a and b 2 at the two ends that the mouth that spins contacts with entwining tube, the seal ring of corresponding model structure is installed in the seal groove seat in outer tube interface, (seal ring in Fig. 3 uses in FIG, seal ring in Fig. 4 uses in fig. 2), then the interface of interpolation pipe is inserted in the interface of outer tube, sealed by seal ring between outer tube and interpolation pipe, the present invention is quick and easy for installation, and cost is low, good seal, No leakage, intensity is high, long service life.