CN204403651U - The two hot melt pipe fitting structure of a kind of electromagnetic welding direct type - Google Patents
The two hot melt pipe fitting structure of a kind of electromagnetic welding direct type Download PDFInfo
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- CN204403651U CN204403651U CN201520016106.0U CN201520016106U CN204403651U CN 204403651 U CN204403651 U CN 204403651U CN 201520016106 U CN201520016106 U CN 201520016106U CN 204403651 U CN204403651 U CN 204403651U
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Abstract
The utility model relates to pipe joint technical field, and particularly relate to the two hot melt pipe fitting structure of a kind of electromagnetic welding direct type, it comprises at least one plastically welding end, forms the birdsmouth being used for socket joint steel-plastic composite pipe between socket and bellmouth; Socket comprises supporting section, contraction section, the inwall of the supporting section of socket is provided with the metal lining that has the annular expanding outwardly elastic force, the external diameter of metal lining mates with the internal diameter of socket, and metal lining has opening, and this opening is the indentation that can mutually be engaged.When socket plastics are in melting state, the outward opening of this metal lining opens and the tension force produced, and will work, and do not stay dead angle to whole socket inwall; And the metal lining of this indentation, be more suitable for the tube design of larger caliber, the bore of pipe fitting is larger, and the gap of metal lining when opening is larger, so two hot melt pipe fittings that the utility model is more suitable for larger caliber are installed.
Description
Technical field
The utility model relates to pipe joint technical field, particularly relates to the two hot melt pipe fitting structure of a kind of electromagnetic welding direct type.
Background technique
Along with the successful exploitation of electromagnetic induction heating cumulative technology abandoning pressure cooling system, lightweight and the portable function of electromagnetic induction heater are all achieved, so the electromagnetic induction heating welding realizing two hot melt pipe fitting and steel-plastic composite pressure pipe (also comprising the pipeline of multiple steel-plastic composite) becomes possibility.The mode that electromagnetic induction heating welding is installed is that the metal layer of application electromagnetic induction steel-plastic composite pressure pipe generates heat and transfers heat to bellmouth and the tap position plastics of tubing inside and outside wall plastics and two hot melt pipe fitting, and time this, we need the factor considered but to be: can make to combine to obtain better two Fundamentals---temperature and laminate pressure between plastics.
We know that the excessive rising of plastics temperature can cause plastics carbonization variation even burning initiation security incident, so be need to some extent control, even but in controlled temperature range, the installation effect that the length of heating time is brought also is different, the such as jack part of two hot melt pipe fitting, plastic shrink may be caused too much because of the slightly long of plastic heating time, cause the blocking pipe because plastic shrink is too much of jack part or make latus rectum diminish further.The China Patent No. of applying for before the applicant is the utility model patent of 201320613261.1, and disclose the two hot melt pipe fitting of a kind of electromagnetic induction heating welding, the jack design of two hot melt pipe fitting is two sections by it, and one section is supporting section, and one section is contraction section.Design principle is that supporting section has enough thickness, and contraction section and supporting section form a larger angle, contraction section port section is presented (generally can be designed to the wall thickness of 0.3 ~ 2 millimeter) with book wall form, when installing, the bulk deformation resisting plastics with the plastic thickness that supporting section is enough shrinks, and allow the book wall plastics longitudinal contraction of contraction section, so first, ensure that the plastics of contraction section can merge with pipe material inner wall completely, then leak infiltration probability almost nil, certainly as Computer Aided Design: present (namely extending an observation panel) with book wall form at the outer wall port of bellmouth in the same old way, bellmouth must higher than socket simultaneously, like this in time seeing that observation panel port plastics have occurred melting in conjunction with state with outer pipe wall, the fusion of inwall plastics and socket plastics can be tightr, now can judge to install and complete.This design reasonably also has practicability completely.But be outside its deficiency: the fit tolerance of tubing and pipe fitting must be enough little---obtain enough plastics laminate pressures thus; The staff installed must have strong sense of responsibility and need to have certain experience, and heating time must have preferably control.Front is a bit easily realize when product manufacturing, but tubing is in transport and cutting process, certain distortion (especially larger bore) can be produced unavoidably, a then point, usually Bu Shi producer can control again, heating time is long, if the melting all completely of involved socket supporting section plastics, then problem that is stifled, plug just there will be.So structural design must be considered the risk that tube spigot paralysis collapses, so embedding a metal lining again toward socket inwall is an effective mode.
So, the China Patent No. of applying for before the applicant is the utility model patent of 201420433250.X, disclose the two hot melt pipe fitting of a kind of electromagnetic induction heating welded-connecting type with metal lining, it not only maintains the feature of observable welding effect, and by increasing metal lining, make the tolerance level of heating time longer, greatly reduce the risk of installation, also significantly reduce the requirement of installment work for the technique and experiences of staff.But, the two hot melt pipe fitting of electromagnetic induction heating welded-connecting type of this band metal lining, 2 contents are still had to consider comprehensive not, one is that building site is when operating PSP steel-plastic composite pressure pipe inserting pipe elements, use instrument (such as rubber hammer) is usually needed to knock tubing or pipe fitting, to guarantee that socket joint puts in place, but be in bellmouth end and the welding effect observation mouth that the end extended out is book wall-like state cannot resist possible knocking energetically, after welding effect observation mouth is knocked damage, the insertion of lower one end tubing can be affected, also the judgement to installing welding effect can to a certain degree be affected, so, the scheme of optimal design is designed to sink to bellmouth end by welding effect observation mouth, the just book wall plastics of welding effect observation section actual demand present, especially end presents with book wall, book wall plastics are meeting longitudinal contraction easily after being heated, thus can accurately judge effect is installed from the situation of melting or contraction.On the other hand, the open metal elasticity lining of original design, parallel lines state is at opening two ports, we know, the effect of open metal elasticity lining is when socket plastics are in melting state, produces an outside tension force, stops the longitudinal contraction of socket plastics on the one hand, make socket plastics and pipe material inner wall plastics fit on the one hand tightr, so after plastics cooling, pipe part plastics fuse together completely.The design of this open metal elasticity lining is electromagnetic inductive welding for the key point of two hot melt pipe fitting and internal and external layer to be plastic interlayer the be composite structure pipeline successful installation of metal.But see, the open metal elasticity lining of parallel open, when lining outwards opens, opening is larger, the gap portion that open part produces is actually and does not extrude tension force, like this, still there is a little installation risk.In fact the open metal elasticity lining of parallel open, is relatively applicable to small-bore pipe fitting (such as DN50 and following specification), is not too applicable to the pipe fitting of larger caliber.
So the applicant is on the basis of above-mentioned two patents, carry out technical optimization once again, to obtain the best and the most rational product structure design.
Model utility content
The purpose of this utility model is to provide a kind of electromagnetic welding direct type two hot melt pipe fitting structure for the deficiencies in the prior art, the opening of its metal lining is the indentation that can mutually be engaged, metal lining is outwards opened and the tension force produced can work to whole socket inwall, do not stay dead angle, and the two hot melt pipe fittings being more suitable for larger caliber are installed.
To achieve these goals, the utility model provides a kind of electromagnetic welding direct type two hot melt pipe fitting structure, comprise at least one plastically welding end, this plastically welding end comprises inner ring, outer shroud, described inner ring is socket, described outer shroud is bellmouth, forms the birdsmouth being used for socket joint steel-plastic composite pipe between described socket and bellmouth; Described socket comprises supporting section, contraction section, described contraction section is the extension of supporting section outer end, the inwall of the supporting section of described socket is provided with the metal lining that has the annular expanding outwardly elastic force, the external diameter of described metal lining mates with the internal diameter of described socket, described metal lining has opening, and this opening is the indentation that can mutually be engaged.
Preferably, the outer end of described bellmouth offers integrated welding effect observation mouth, and described welding effect observation mouth is for being lowered into the end of described bellmouth, and the outside of described welding effect observation mouth is plane of inclination.
Preferably, the inwall of the supporting section of described socket offers the locating slot for placing described metal lining.
Preferably, the stainless steel that described metal lining adopts copper or meets water hygiene performance requirement is made.
Preferably, the inwall of the contraction section of described socket is for being obliquely installed, and the inwall slanted angle of the contraction section of described socket is more than or equal to 3 degree.
Preferably, the length of the contraction section of described socket is more than or equal to 2 millimeters.
Preferably, the internal diameter of described bellmouth is less than or equal to 60 millimeters, and the thickness of the outer end of the contraction section of described socket is less than or equal to 3 millimeters, and the thickness of the outer end of the welding effect observation mouth of described bellmouth is less than or equal to 2.5 millimeters.
Preferably, the internal diameter of described bellmouth is greater than 60 millimeters, and the thickness of the outer end of the contraction section of described socket is less than or equal to 6 millimeters, and the thickness of the outer end of the welding effect observation mouth of described bellmouth is less than or equal to 4 millimeters.
Preferably, the length of the welding effect observation mouth of described bellmouth is more than or equal to 0.5 millimeter.
Preferably, described metal lining is provided with the stiffening rib for locating and add strong elastic.
The utility model beneficial effect is: the two hot melt pipe fitting structure of electromagnetic welding direct type of the present utility model, the opening of its metal lining is the indentation that can mutually be engaged, when socket plastics are in melting state, the outward opening of this metal lining opens and the tension force produced, to work to whole socket inwall, not stay dead angle; And the metal lining of this indentation, be more suitable for the tube design of larger caliber, the bore of pipe fitting is larger, and the gap of metal lining when opening is larger, so two hot melt pipe fittings that the utility model is more suitable for larger caliber are installed.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of the utility model embodiment 1.
Fig. 2 is the side view of the utility model embodiment 1 when not installing metal lining.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the schematic diagram of Fig. 3 dimensioning and angle symbol.
Fig. 5 is the extruding schematic diagram of the metal lining of the utility model embodiment 1.
Fig. 6 is the schematic diagram of metal lining after heat welded completes of the utility model embodiment 1.
Fig. 7 is the structural representation of the metal lining of the utility model embodiment 2.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Embodiment 1
Please refer to Fig. 1 ~ 5, the two hot melt pipe fitting structure of electromagnetic welding direct type of the present utility model, comprise at least one plastically welding end 1, such as: the two hot melt pipe fitting of electromagnetic induction heating welded-connecting type of the present embodiment comprises two plastically welding ends 1, for connecting two steel-plastic composite pressure pipes, certainly, two plastically welding end 1 structures in the present embodiment are identical, and according to the needs that reality connects, also can be a plastically welding end 1, three plastically welding ends 1, four plastically welding ends 1, five plastically welding ends 1 etc., these should not belong to restriction protection domain of the present utility model.
Wherein, plastically welding end 1 comprises inner ring, outer shroud, and inner ring is socket 11, and outer shroud is bellmouth 12, forms the birdsmouth 13 being used for socket joint steel-plastic composite pipe between socket 11 and bellmouth 12.Socket 11 comprises supporting section E, contraction section D, and contraction section D is the extension of supporting section E outer end.The inwall of the supporting section E of socket 11 is provided with the metal lining 2 that has the annular expanding outwardly elastic force, and the external diameter of metal lining 2 mates with the internal diameter of socket 11, and metal lining has opening 21, and this opening 21 is the indentation that can mutually be engaged.When socket 11 plastics are in melting state, the opening 21 of this metal lining 2 outwards opens and the tension force produced, and will work, and do not stay dead angle to whole socket 11 inwall; And the metal lining 2 of this indentation, be more suitable for the tube design of larger caliber, the bore of pipe fitting is larger, and the gap of metal lining 2 when opening is larger, so two hot melt pipe fittings that the utility model is more suitable for larger caliber are installed.
Preferably, the outer end of bellmouth 12 offers integrated welding effect observation mouth F, welding effect observation mouth F is the end being lowered into bellmouth 12, and the outside of welding effect observation mouth F is plane of inclination, to facilitate observation and accurate assurance electromagnetic induction heating time also effective assurance welding effect.
Preferably, the inwall of the supporting section E of socket 11 offers the locating slot 14 for placing metal lining 2.Specifically, as shown in Figure 5, when metal lining 2 is in uninstalled free state, opening 21 is for opening larger amplitude; When needs are installed, firmly extruded by metal lining 2, its diameter is diminished, opening 21 closes, then coupling embeds the inwall of the supporting section E of socket 11, makes metal lining 2 embed in locating slot 14, namely installs metal lining 2.As shown in Figure 6, be the state of metal lining 2 after heat welded completes, the opening 21 of metal lining 2 has and to a certain degree opens, and the degree of opening associates with the gap between socket 11 with steel-plastic composite pressure pipe inwall and outer Tensity size.Preferably, the stainless steel that metal lining 2 adopts copper or meets water hygiene performance requirement is made.
Preferably, as shown in Figure 3,4, the inwall D1 of the contraction section D of socket 11 for being obliquely installed, and the inwall slanted angle of the contraction section D of socket 11 (∠ a) is more than or equal to 3 degree.The length (D_L) of the contraction section D of socket 11 is more than or equal to 2 millimeters.Wherein, if the internal diameter of bellmouth 12 (Dn) is less than or equal to 60 millimeters, then the thickness (D_H) of the outer end of the contraction section D of socket 11 should for being less than or equal to 3 millimeters, and the thickness (F_H) of the outer end of the welding effect observation mouth F of bellmouth 12 should for being less than or equal to 2.5 millimeters.If the internal diameter of bellmouth 12 is greater than 60 millimeters, then the thickness of the outer end of the contraction section D of socket 11 should for being less than or equal to 6 millimeters, and the thickness of the outer end of the welding effect observation mouth F of bellmouth 12 should for being less than or equal to 4 millimeters.The length (F_L) of the welding effect observation mouth F of bellmouth 12 is more than or equal to 0.5 millimeter.Such Dimensions, makes the end of contraction section D, the end of welding effect observation mouth F all presents with book wall form.
Embodiment 2
Please refer to Fig. 7, for embodiment 2 of the present utility model, the difference of the present embodiment and embodiment 1 is, metal lining 2 is provided with stiffening rib 22 for locating and add strong elastic (namely can have one or more of inwardly or the stiffening rib of outwardly convex or positioning bar), certainly, the inwall of the supporting section E of socket 11 also can offer the groove mated with stiffening rib 22, to prevent loosening or coming off of metal lining 2.
Other structure of the present embodiment is identical with embodiment 1, repeats no more herein.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection domain; although done to explain to the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; the technical solution of the utility model is modified or equivalent replacement, all belong to protection domain of the present utility model.
Claims (10)
1. the two hot melt pipe fitting structure of electromagnetic welding direct type, comprise at least one plastically welding end, this plastically welding end comprises inner ring, outer shroud, and described inner ring is socket, described outer shroud is bellmouth, forms the birdsmouth being used for socket joint steel-plastic composite pipe between described socket and bellmouth; Described socket comprises supporting section, contraction section, described contraction section is the extension of supporting section outer end, it is characterized in that: the inwall of the supporting section of described socket is provided with the metal lining that has the annular expanding outwardly elastic force, the external diameter of described metal lining mates with the internal diameter of described socket, described metal lining has opening, and this opening is the indentation that can mutually be engaged.
2. the two hot melt pipe fitting structure of electromagnetic welding direct type according to claim 1, it is characterized in that: the outer end of described bellmouth offers integrated welding effect observation mouth, described welding effect observation mouth is for being lowered into the end of described bellmouth, and the outside of described welding effect observation mouth is plane of inclination.
3. the two hot melt pipe fitting structure of electromagnetic welding direct type according to claim 1 and 2, is characterized in that: the inwall of the supporting section of described socket offers the locating slot for placing described metal lining.
4. the two hot melt pipe fitting structure of electromagnetic welding direct type according to claim 3, is characterized in that: the stainless steel that described metal lining adopts copper or meets water hygiene performance requirement is made.
5. the two hot melt pipe fitting structure of electromagnetic welding direct type according to claim 2, is characterized in that: the inwall of the contraction section of described socket is for being obliquely installed, and the inwall slanted angle of the contraction section of described socket is more than or equal to 3 degree.
6. the two hot melt pipe fitting structure of electromagnetic welding direct type according to claim 2, is characterized in that: the length of the contraction section of described socket is more than or equal to 2 millimeters.
7. the two hot melt pipe fitting structure of electromagnetic welding direct type according to claim 6, it is characterized in that: the internal diameter of described bellmouth is less than or equal to 60 millimeters, the thickness of the outer end of the contraction section of described socket is less than or equal to 3 millimeters, and the thickness of the outer end of the welding effect observation mouth of described bellmouth is less than or equal to 2.5 millimeters.
8. the two hot melt pipe fitting structure of electromagnetic welding direct type according to claim 6, it is characterized in that: the internal diameter of described bellmouth is greater than 60 millimeters, the thickness of the outer end of the contraction section of described socket is less than or equal to 6 millimeters, and the thickness of the outer end of the welding effect observation mouth of described bellmouth is less than or equal to 4 millimeters.
9. the two hot melt pipe fitting structure of electromagnetic welding direct type according to claim 1, is characterized in that: the length of the welding effect observation mouth of described bellmouth is more than or equal to 0.5 millimeter.
10. the two hot melt pipe fitting structure of electromagnetic welding direct type according to claim 1, is characterized in that: described metal lining is provided with the stiffening rib for locating and add strong elastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016106.0U CN204403651U (en) | 2015-01-09 | 2015-01-09 | The two hot melt pipe fitting structure of a kind of electromagnetic welding direct type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016106.0U CN204403651U (en) | 2015-01-09 | 2015-01-09 | The two hot melt pipe fitting structure of a kind of electromagnetic welding direct type |
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| CN204403651U true CN204403651U (en) | 2015-06-17 |
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| CN201520016106.0U Active CN204403651U (en) | 2015-01-09 | 2015-01-09 | The two hot melt pipe fitting structure of a kind of electromagnetic welding direct type |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036127A (en) * | 2017-12-21 | 2018-05-15 | 海南联塑科技实业有限公司 | A kind of spiral bar liner connector of carat of pipe |
| CN112477106A (en) * | 2020-12-11 | 2021-03-12 | 湖南振辉管业有限公司 | Method for installing plastic-lined pipe of metal pipe with plastic-lined pipe |
-
2015
- 2015-01-09 CN CN201520016106.0U patent/CN204403651U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036127A (en) * | 2017-12-21 | 2018-05-15 | 海南联塑科技实业有限公司 | A kind of spiral bar liner connector of carat of pipe |
| CN108036127B (en) * | 2017-12-21 | 2024-02-23 | 海南联塑科技实业有限公司 | Spiral rib lining connecting piece of carat pipe |
| CN112477106A (en) * | 2020-12-11 | 2021-03-12 | 湖南振辉管业有限公司 | Method for installing plastic-lined pipe of metal pipe with plastic-lined pipe |
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