CN103363233B - A kind of plastic tube connecting means - Google Patents
A kind of plastic tube connecting means Download PDFInfo
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- CN103363233B CN103363233B CN201310267685.1A CN201310267685A CN103363233B CN 103363233 B CN103363233 B CN 103363233B CN 201310267685 A CN201310267685 A CN 201310267685A CN 103363233 B CN103363233 B CN 103363233B
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Abstract
A kind of plastic tube connecting means.The present invention relates to tubing interconnection technique field, technical problem to be solved is to provide a kind of firm and reliable connection, good airproof performance, improve the plastic tube connecting means in working life, comprise the following steps successively: end portion treatment, heat-melting butt-joint, cooling one, electric smelting docking, cooling two, quadric injection mould, cooling three, flat surface.The present invention carries out fusion reinforcement by connection by the technology mode that heat-melting butt-joint, electric smelting docking and quadric injection mould three kinds are different to electro-fusion sleeve and two pipe fittings; the sealing of whole tube system and the structural strength after connecting can respectively by heat-melting butt-joint district, electric smelting fusion zone and quadric injection mould district shareds; serve the protective action of triple seal strengthening; greatly can improve the safety reliability of whole tube system, thus extend the working life of whole tube system.
Description
Technical field
The present invention relates to tubing interconnection technique field, more specifically, relate to a kind of plastic tube connecting means.
Background technique
In prior art, the mode (main fusion Placement has: electric smelting connection and hot-melt adhesive paste) that plastic tube can be connected by fusion obtains solid and reliable pipe coupling.The physical process that its fusion connects is: plastic tube is heated to a certain degree, and originally compact arranged molecular chain dissolves bifurcated, is combined into an entirety when molecular chain after temperature decline connects two parts making to be connected again.Owing to being the body welding between plastic tube, therefore the intensity of joint is identical with the intensity of of tubing itself, and partial intensities even can exceed the bulk strength of tubing.In tubing construction, interconnection technique is the key of its installation engineering quality, the quality of interconnection technique is one of key factor affecting pipe workpiece quality and working life, the interconnection technique of reliable advanced person is that the extensive use of plastic tube provides guarantee, the various technology that plastic tube connects are understood and grasped, to ensure the Security of plastic duct system so necessary.
Application number is the self-pressing electrothermal fusion method for joining that patent discloses a kind of plastic tube of 02114008.1, it is mainly by carrying out reaming to plastics connecting sleeve, thus be connected tubing and assemble, the connecting sleeve recycled by swelling produces thermal shrinkage, the tie layer between cover and pipe is made to be subject to uniform pressure, then to the electric heating wire heating power of tie layer, make the plastically welding of connection aspect together, thus the fusion achieved between pipe fitting connects, because this connecting means need adopt the plug of band taper to carry out reaming by jack or other compression tools to adapter sleeve endoporus, so artifical influence factor during operation is very large, and to be forced by jack equal pressure instrument expanding treatment is carried out to adapter sleeve, damage to a certain degree can be caused to the strength character of sleeve pipe and the degree of finish of internal surface thereof, and after jack or other compression tools are laid down, adapter sleeve can be subject to very large contraction and reply power effect, make electro-fusion sleeve that very large reversal deformation may occur.Badly influence the tightness of assembling and the rear pipe-line system of electric smelting fusion, reliability and Security when being out of shape excessive, bury potential safety hazard to the use of whole pipe-line system.
Summary of the invention
The present invention is intended to solve the problems of the technologies described above at least to a certain extent.
The object of this invention is to provide a kind of firm and reliable connection, good airproof performance, improve the plastic tube connecting means in working life.
The technical solution adopted for the present invention to solve the technical problems is: a kind of plastic tube connecting means, comprises the following steps successively: end portion treatment, heat-melting butt-joint, cooling one, electric smelting docking, cooling two, quadric injection mould, cooling three, flat surface.
The present invention carries out fusion reinforcement by connection by the technology mode that heat-melting butt-joint, electric smelting docking and quadric injection mould three kinds are different to electro-fusion sleeve and two pipe fittings; the sealing of whole tube system and the structural strength after connecting can respectively by heat-melting butt-joint district, electric smelting fusion zone and quadric injection mould district shareds; serve the protective action of triple seal strengthening; greatly can improve the safety reliability of whole tube system, thus extend the working life of whole tube system.
In one embodiment, described end portion treatment is to needing the end link position of the pipe fitting one and pipe fitting two connected to carry out cutting process, so that at end forming station stepped structure, and by smooth for end plane milling.Preferably, the end link position of pipe fitting one and pipe fitting two through ring or conical cut-out material, forming station stepped structure.
In one embodiment, described heat-melting butt-joint is by together with melting connection by the end link position of pipe fitting one and pipe fitting two.
In one embodiment, the neutral position for the position of pipe fitting one and pipe fitting two heat-melting butt-joint being moved in electro-fusion sleeve is docked in described electric smelting, and be effectively fixedly clamped with fixture, electric current is passed into two of electro-fusion sleeve terminal, make the metallic resistance silk in electro-fusion sleeve heating up, pipe fitting one, the outer wall of pipe fitting two and the inwall of electro-fusion sleeve are become molten state by the metallic resistance silk of high temperature, thus allow pipe fitting one, pipe fitting two fuse together with electro-fusion sleeve.
In one embodiment, described quadric injection mould is inject melting charge by secondary injection mole, allows melting charge be full of whole quadric injection mould space and secondary injection mole.
In one embodiment, described flat surface is polished flat by the outer surface of electro-fusion sleeve.
In a preferred embodiment, after connection completes, pressure testing validation test is carried out.
In a preferred embodiment, need the skin carrying out the pipe fitting one and pipe fitting two connected to be polythene material, internal layer is wearing layer, and the material of wearing layer is superhigh molecular weight polyethylene material.
In a preferred embodiment, the electro-fusion sleeve docked for electric smelting and pipe fitting one, pipe fitting two are same model polyethylene pipe series products, the melting charge employing that quadric injection mould is used and electro-fusion sleeve same model material.
The invention has the beneficial effects as follows:
1, the present invention carries out fusion reinforcement by connection by the technology mode that heat-melting butt-joint, electric smelting docking and quadric injection mould three kinds are different to electro-fusion sleeve and two pipe fittings, the sealing of whole tube system and the structural strength after connecting can respectively by heat-melting butt-joint district, electric smelting fusion zone and quadric injection mould district shareds, serve the protective action of triple seal strengthening, greatly can improve whole tube system safety reliability;
2, the internal layer of pipe fitting used is superhigh molecular weight polyethylene material, the friction factor of this material is minimum, there is high slide friction, capability, its wear resistance is 6 times of general alloyed steel, stainless 29 times, 19 times of phenolic resin, 7 times of nylon six, generally poly 5 times, due to the wear resistance of its excellence, the contour lost material of conveying ore in sand form mud can be applied to;
3, connection mouth place adopts quadric injection mould to be sealed, and can prevent the infiltration of silt molecule, ensures the complete sealing of interface position, thus extends the working life of whole tube system;
4, the present invention is not subject to environment and personal factor impact, and the weld bond reliability of institute's connection pipe fitting is high, real achieves the integrated of interface and tubing, effectively can resist the circumference stress of internal pressure generation and the anti-impact stress of axis.
Accompanying drawing explanation
Fig. 1 is the connection diagram of one embodiment of the invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the structural representation of electro-fusion sleeve in one embodiment of the invention.
Fig. 4 is the structural representation of pipe fitting one in one embodiment of the invention.
Fig. 5 is the partial enlarged drawing of Fig. 4.
Fig. 6 is the structural representation of pipe fitting two in one embodiment of the invention.
Fig. 7 is the partial enlarged drawing of Fig. 6.
Accompanying drawing, only for exemplary illustration, can not be interpreted as limitation of the present invention; In order to better embodiment is described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
As shown in Figures 1 to 7, a kind of plastic tube connecting means of the present invention, comprises the following steps successively: end portion treatment, heat-melting butt-joint, cooling one, electric smelting docking, cooling two, quadric injection mould, cooling three, flat surface.The present invention carries out fusion reinforcement by connection by the technology mode that heat-melting butt-joint, electric smelting docking and quadric injection mould three kinds are different to electro-fusion sleeve and two pipe fittings; the sealing of whole tube system and the structural strength after connecting can respectively by heat-melting butt-joint district, electric smelting fusion zone and quadric injection mould district shareds; serve the protective action of triple seal strengthening; greatly can improve the safety reliability of whole tube system, thus extend the working life of whole tube system.
Concrete Connection Step of the present invention is:
1, end portion treatment: carry out cutting process to needing the end link position of the pipe fitting 1 and pipe fitting 22 connected, to distinguish forming station stepped structure 11 and step-like structure 21 in the end of pipe fitting 1 and pipe fitting 22, and by smooth for end plane milling.In the present embodiment, the end link position of pipe fitting 1 and pipe fitting 22 is through ring or conical cut-out material, thus forming station stepped structure 11 and step-like structure 21.Wherein specifically excise size to determine according to actual needs;
2, heat-melting butt-joint: make it reach molten state with the end link position of heater heat pipes 1 and pipe fitting 22, again the end part aligning of pipe fitting 1 and pipe fitting 22 is also firmly clamped, make pipe fitting 1 and pipe fitting 22 by together with melting connection, docking backstage stepped structure 11 and step-like structure 21 form quadric injection mould space 3 jointly;
3, one is cooled: keep constant clamping force until the melting charge cooling at heat-melting butt-joint position;
4, electric smelting docking: the outer surface at heat-melting butt-joint position is polished flat, to keep slickness, then the heat-melting butt-joint position of pipe fitting 1 and pipe fitting 22 is moved to the neutral position in electro-fusion sleeve 4, and be effectively fixedly clamped with fixture, electric current is passed into two of electro-fusion sleeve 4 terminal 41, make the metallic resistance silk 42 of electro-fusion sleeve 4 li heating up, the outer wall of pipe fitting 1, pipe fitting 22 and the inwall of electro-fusion sleeve 4 are become molten state by the metallic resistance silk 42 of high temperature, thus allow pipe fitting 1, pipe fitting 22 fuse together with electro-fusion sleeve 4;
5, cool two: cooling a period of time, allow pipe fitting 1, pipe fitting 22 fully fuse firmly with electro-fusion sleeve 4 three;
6, quadric injection mould: inject melting charge by secondary injection mole 43, melting charge is allowed to be full of whole quadric injection mould space 3 and secondary injection mole 43, wherein the number of secondary injection mole 43 and size can set as required, and secondary injection mole 43 is positioned at the top position in quadric injection mould space 3, so that the melting charge of quadric injection mould can successfully flow into quadric injection mould space 3;
7, cool three: cooling a period of time, allow the melting charge cooled and solidified of storage in quadric injection mould space 3 and secondary injection mole 43;
8, flat surface: the protrusion material of secondary injection mole 43 outer surface is excised, and the outer surface of electro-fusion sleeve 4 is polished flat.
In the present embodiment, also need to carry out pressure testing validation test after connection completes, thus effectively ensure the reliability after connecting and Security.
In the present embodiment, need the skin carrying out the pipe fitting 1 and pipe fitting 22 connected to be polythene material, internal layer is respectively wearing layer 12 and wearing layer 22, and the material of wearing layer 12 and wearing layer 22 is superhigh molecular weight polyethylene material.
In the present embodiment, electro-fusion sleeve 4 used and pipe fitting 1, pipe fitting 22 are same model polyethylene pipe series products, the melting charge employing that quadric injection mould is used and electro-fusion sleeve 4 same model material, can merge with electro-fusion sleeve 4, pipe fitting 1, pipe fitting 22 better.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (6)
1. a plastic tube connecting means, it is characterized in that, comprise the following steps successively: end portion treatment, heat-melting butt-joint, cooling one, electric smelting docking, cooling two, quadric injection mould, cooling three, flat surface, described end portion treatment is to needing the end link position of the pipe fitting one and pipe fitting two connected to carry out cutting process, so that at end forming station stepped structure, and by smooth for end plane milling;
Described heat-melting butt-joint is by together with melting connection by the end link position of pipe fitting one and pipe fitting two;
The neutral position for the position of pipe fitting one and pipe fitting two heat-melting butt-joint being moved in electro-fusion sleeve is docked in described electric smelting, and be effectively fixedly clamped with fixture, electric current is passed into two of electro-fusion sleeve terminal, make the metallic resistance silk in electro-fusion sleeve heating up, pipe fitting one, the outer wall of pipe fitting two and the inwall of electro-fusion sleeve are become molten state by the metallic resistance silk of high temperature, thus allow pipe fitting one, pipe fitting two fuse together with electro-fusion sleeve;
Described quadric injection mould is inject melting charge by secondary injection mole, allows melting charge be full of whole quadric injection mould space and secondary injection mole.
2. plastic tube connecting means according to claim 1, is characterized in that, the end link position of pipe fitting one and pipe fitting two through ring or conical cut-out material, forming station stepped structure.
3. plastic tube connecting means according to claim 1, is characterized in that, described flat surface is polished flat by the outer surface of electro-fusion sleeve.
4. the plastic tube connecting means according to any one of claims 1 to 3, is characterized in that, after connection completes, carry out pressure testing validation test.
5. the plastic tube connecting means according to any one of claims 1 to 3, is characterized in that, need the skin carrying out the pipe fitting one and pipe fitting two connected to be polythene material, internal layer is wearing layer, and the material of wearing layer is superhigh molecular weight polyethylene material.
6. the plastic tube connecting means according to any one of claims 1 to 3, it is characterized in that, the electro-fusion sleeve docked for electric smelting and pipe fitting one, pipe fitting two are same model polyethylene pipe series products, the melting charge employing that quadric injection mould is used and electro-fusion sleeve same model material.
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CN112959682A (en) * | 2021-01-29 | 2021-06-15 | 吴江港华燃气有限公司 | Safe connection process for polyethylene gas pipeline |
CN114251532A (en) * | 2021-12-08 | 2022-03-29 | 华创天元实业发展有限责任公司 | Novel reinforced electric hot melting belt and connection mode for connecting novel reinforced electric hot melting belt with plastic pipeline |
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