CN216307060U - Plastic steel electric melting connecting pipe fitting - Google Patents
Plastic steel electric melting connecting pipe fitting Download PDFInfo
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- CN216307060U CN216307060U CN202123094944.4U CN202123094944U CN216307060U CN 216307060 U CN216307060 U CN 216307060U CN 202123094944 U CN202123094944 U CN 202123094944U CN 216307060 U CN216307060 U CN 216307060U
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Abstract
The utility model discloses a plastic steel electric melting connecting pipe fitting, which comprises a flat joint and a wire joint which are matched with each other, wherein the flat joint and the wire joint are connected through a nut; the wire joint comprises a wire joint socket part sleeve part and a wire joint connecting cylinder part, wherein an external thread is arranged on the wire joint connecting cylinder part, a wire joint axial steel wire is fixed on the wire joint connecting cylinder part, the outer end face of the wire joint connecting cylinder part is exposed and matched with the flat joint flange part, an electric heating wire is embedded in the inner hole wall of the wire joint socket part sleeve part, and a binding post is arranged on the wire joint socket part sleeve part. The electric melting connecting pipe fitting is simple in structure, can better connect the composite pipe, and avoids the phenomenon of connection looseness caused by plastic creep deformation.
Description
Technical Field
The utility model relates to a plastic steel electric melting connecting pipe fitting which is used for connecting plastic composite reinforced pipelines.
Background
With the development of pipeline technology, polyolefin composite reinforced pipes (hereinafter referred to as "composite pipes") are more and more widely used. The connecting pipe fitting is used in the butt joint process of the composite pipes, for example, the patent number 201721781931.5 discloses the mutual connection mode of the composite pipes, the connecting pipe fitting comprises two sections of composite pipes needing butt joint, a flat joint, a screw joint and a sealing gasket, the end parts of the composite pipes are processed by flanging, the flat joint and the screw joint are respectively fixed at the end parts of the two sections of composite pipes, the flanging on the composite pipes can stop the flat joint and the screw joint, the flat joint is provided with a nut, the nut can rotate on the flat joint, the tail part of the nut and the head end of the flat joint can stop each other, the end part of the screw joint is provided with an external thread which can be screwed with the nut, the sealing gasket is arranged between the mutually butted flanging of the two sections of composite pipes, meanwhile, the flat joint and the screw joint are connected with the composite pipes by extrusion through a conical groove, and the connection mode is still somewhat insufficient, because the outside of compound pipe is the plastic layer, consequently, utilize the chucking mode of bell groove to connect more compactlyly earlier, but plastics can creep and lead to stress relaxation, the connection between bell groove and the compound outside of pipe will become flexible like this to influence and connect the quality.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the utility model provides a plastic steel electric smelting connecting pipe spare, this electric smelting connecting pipe spare simple structure, can be better with compound union coupling, avoided leading to connecting not hard up phenomenon because of plastics creep and take place.
In order to solve the technical problems, the technical scheme of the utility model is as follows: a plastic steel electric melting connecting pipe fitting comprises a flat joint and a wire joint which are matched with each other, wherein the flat joint and the wire joint are connected through a nut; a plurality of flat joint axial steel wires are fixed on the upper circumference of the flat joint flange part, the flat joint flange part is sleeved and fixed at one end of the flat joint socket sleeve part through an anti-separation structure, the pipe wall of the flat joint socket sleeve part is coated with the flat joint axial steel wires and the central hole surface of the flat joint flange part, the outer side end surface of the flat joint flange part is exposed, an electric heating wire is embedded in the inner hole wall of the flat joint socket sleeve part, and the flat joint socket sleeve part is provided with a binding post connected with the electric heating wire;
the wire joint comprises a wire joint socket sleeve part and a metal wire joint connecting barrel part arranged at one end of the wire joint socket sleeve part, wherein external threads are arranged on the wire joint connecting barrel part, a plurality of wire joint axial steel wires are fixed on the circumference of the wire joint connecting barrel part, the wire joint connecting barrel part is sleeved and fixed at one end of the wire joint socket sleeve part through an anti-separation structure, the pipe wall of the wire joint socket sleeve part coats the wire joint axial steel wires and the central hole surface of the wire joint connecting barrel part, the outer end surface of the wire joint connecting barrel part is exposed and matched with a flat joint flange part, an electric heating wire is embedded in the inner hole wall of the wire joint socket sleeve part, and the wire joint socket sleeve part is provided with a binding post connected with the electric heating wire.
Preferably, the anti-separation structure on the flange part of the plain joint comprises a first caulking groove arranged on the central hole surface of the flange part of the plain joint, and the pipe wall of the socket sleeve part of the plain joint covers the central hole surface of the flange part of the plain joint and forms a first annular insert embedded in the first caulking groove.
Preferably, the axial steel wire of the wire joint is mounted in the same manner as the axial steel wire of the plain joint, a plain joint annular sunken groove is formed in the outer end face of the plain joint flange portion and located on the periphery of the central hole, a plurality of circumferentially arranged mounting holes are formed in the bottom of the plain joint annular sunken groove, and the plain joint axial steel wire is fixed in the mounting holes.
Preferably, a U-shaped steel wire penetrates through the adjacent mounting holes, and the straight line section of the U-shaped steel wire forms a plain joint axial steel wire.
Preferably, the axial steel wire is an L-shaped steel wire, the long section of the L-shaped steel wire penetrates through the corresponding mounting hole and forms a flat joint axial steel wire, and the short section of the L-shaped steel wire is in contact with the annular sinking groove of the flat joint.
Preferably, the wire joint connecting cylinder part, the flat joint flange part, the flat joint axial steel wire and the contact part of the wire joint axial steel wire and the plastic are coated with hot melt adhesive.
Preferably, the inner side surface of the flange part of the flat joint protrudes to form an external reinforcing ring part, the external reinforcing ring part is integrally formed with the flange part of the flat joint, and the groove of the annular sunken groove of the flat joint is positioned on the external reinforcing ring part.
Preferably, an outer reinforcing ring part is welded on the inner side end face of the flat joint flange part, the flat joint annular sunken groove is formed in the flat joint flange part, and the outer reinforcing ring part covers the outer part of the flat joint socket sleeve part.
Preferably, at least one circle of plain joint outer ring positioning steel wire and at least one circle of wire joint outer ring positioning steel wire are fixed on the plain joint axial steel wire and the wire joint axial steel wire respectively.
Preferably, a seal ring is provided between an outer surface of the screw joint connection cylinder portion and an outer surface of the flat joint flange portion.
After the technical scheme is adopted, the utility model has the effects that: 1. the flat joint flange part of the connecting pipe fitting and the outer side surface of the screw joint connecting cylinder part can be contacted with each other, and after the nut is screwed down, the flat joint flange part and the screw joint connecting cylinder part are made of metal materials, so that the nut cannot be loosened due to plastic creep deformation, and the reliable connection can be ensured by screwing down once; 2. the socket composite pipe is arranged inside the flat joint socket sleeve part and the wire joint socket sleeve part of the connecting pipe fitting, and the inner walls of the flat joint socket sleeve part and the wire joint socket sleeve part and the outer wall of the composite pipe are softened and fused together by heating of an electric heating wire, so that the flat joint socket sleeve part and the wire joint socket sleeve part cannot be loosened, and the problem that the clamping connection is easy to loosen by adopting a conical groove in the background technology is solved; 3. the plain end joint socket sleeve part and the plain end joint flange part of the connecting pipe fitting are connected through the axial steel wire and the anti-separation structure, and in the same way, the screw joint socket sleeve part and the screw joint connecting cylinder part are also reliably connected through the axial steel wire and the anti-separation structure, so that the bearing capacity of the screw joint socket sleeve part and the plain end joint socket sleeve part is improved, and the connection reliability is higher.
And because the anti-separation structure on the flat joint flange part comprises the first caulking groove arranged on the central hole surface of the flat joint flange part, and the pipe wall of the flat joint socket sleeve part is coated on the central hole surface of the flat joint flange part and forms the first annular embedded block embedded in the first caulking groove, the anti-separation structure can be used for increasing the axial anti-separation capacity and avoiding the separation between the flat joint flange part and the flat joint socket sleeve part.
And because the installation mode of the axial steel wire of the wire joint is the same as that of the axial steel wire of the plain joint, the outer end surface of the flange part of the plain joint is provided with a plain joint annular sunken groove which is positioned at the periphery of the central hole, the bottom of the plain joint annular sunken groove is provided with a plurality of installation holes which are circumferentially arranged, the axial steel wire of the plain joint is fixed in the installation holes, and the axial steel wire can be better and conveniently fixed by utilizing the plain joint annular sunken groove and the installation holes.
And because the connecting cylinder part of the wire joint, the flange part of the flat joint, the axial steel wire of the flat joint and the contact part of the axial steel wire of the wire joint and the plastic are coated with hot melt adhesive, the socket part sleeve part can be better bonded and is not easy to delaminate by utilizing the hot melt adhesive.
And because the inner side surface of the flange part of the flat joint protrudes to form the outer reinforcing ring part, the outer reinforcing ring part and the flange part of the flat joint are integrally formed, and the groove of the annular sinking groove of the flat joint is positioned on the outer reinforcing ring part, the outer reinforcing ring part is simpler to form, the integral appearance quality is better, and the radial pressure-bearing capacity of the connecting pipe fitting can be further improved by the outer reinforcing ring part.
And because the plain end joint axial steel wire and the wire joint axial steel wire are respectively fixed with at least one circle of plain end joint outer ring positioning steel wire and at least one circle of wire joint outer ring positioning steel wire, the plain end joint outer ring positioning steel wire and the wire joint outer ring positioning steel wire can not only enhance the radial bearing capacity, but also can fix the axial steel wire, and the axial steel wire can not shake during the forming.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective sectional view of an embodiment of the present invention;
FIG. 2 is an axial cross-sectional view of an embodiment of the present invention;
FIG. 3 is a perspective cross-sectional view of the flat joint with the flat joint socket sleeve concealed;
FIG. 4 is a perspective cross-sectional view of a flat joint of another construction;
FIG. 5 is a perspective cross-sectional view of the wire joint with the wire joint socket sleeve concealed;
in the drawings: 1. a flat joint; 11. a plain end flange portion; 111. a flange edge; 112. an outer reinforcement ring portion; 113. a flat joint annular sinking groove; 114. a first caulking groove; 12. a plain end socket portion sleeve portion; 13. a binding post; 14. a plain end axial steel wire; 15. positioning a steel wire on the outer ring of the plain end connector; 16. an electric heating wire; 2. a composite pipe; 3. a nut; 4. a wire joint; 41. the screw joint is connected with the barrel part; 42. a screw joint socket part sleeve part; 43. a wire nipple axial steel wire; 44. positioning the steel wire on the outer ring of the wire connector; 45. an external thread; 46. a second caulking groove; 47. a thread joint annular sink; 5. and (5) sealing rings.
Detailed Description
The present invention is described in further detail below with reference to specific examples.
As shown in fig. 1 to 5, the plastic-steel electrofusion connecting pipe fitting comprises a flat joint 1 and a threaded joint 4 which are matched with each other, wherein the flat joint 1 and the threaded joint 4 are connected through a nut 3.
The flat joint 1 comprises a flat joint socket part sleeve part 12 and a metal flat joint flange part 11 arranged at one end of the flat joint socket part sleeve part 12, and the nut 3 is rotatably sleeved outside the flat joint flange part 11 and limited by a flange edge 111; a plurality of axial steel wires are fixed on the circumference of the flange part 11 of the plain end joint, and for convenience of description, the axial steel wire on the plain end joint 1 is called a plain end joint axial steel wire 14, and the axial steel wire on the subsequent wire joint 4 is called a wire joint axial steel wire 43.
The flat joint flange part 11 is fixedly sleeved at one end of a flat joint socket sleeve part 12 through an anti-separation structure, the pipe wall of the flat joint socket sleeve part 12 is coated with a flat joint axial steel wire 14 and the central hole surface of the flat joint flange part 11, the outer end surface of the flat joint flange part 11 is exposed, an electric heating wire 16 is embedded in the inner hole wall of the flat joint socket sleeve part 12, and the flat joint socket sleeve part 12 is provided with a binding post 13 connected with the electric heating wire 16;
as shown in fig. 3, the separation-resistant structure on the flat joint flange portion 11 includes a first caulking groove 114 disposed on the central hole surface of the flat joint flange portion 11, and the pipe wall of the flat joint socket portion 12 covers the central hole surface of the flat joint flange portion 11 and forms a first annular insert embedded in the first caulking groove 114. The number of the first caulking grooves 114 in this embodiment is two, and the number of the corresponding first annular insert blocks is also two.
The installation structure of the axial steel wire 43 of the wire joint on the wire joint connecting cylinder 41 is the same as the installation structure of the axial steel wire 14 of the plain joint on the plain joint flange 11, taking the plain joint flange 11 as an example, a plain joint annular sunken groove 113 is arranged on the outer end face of the plain joint flange 11, the plain joint annular sunken groove 113 is positioned on the periphery of the central hole, a plurality of circumferentially arranged installation holes are arranged on the bottom of the plain joint annular sunken groove 113, and the plain joint axial steel wire 14 is fixed in the installation holes. In the embodiment, the inner side surface of the flat joint flange part 11 protrudes to form an external reinforcing ring part 112, the external reinforcing ring part 112 is integrally formed with the flat joint flange part 11, and the groove of the flat joint annular sinking groove 113 is located on the external reinforcing ring part 112. Of course, as shown in fig. 4, the external reinforcing ring part 112 is not integrally formed, but welded and fixed by a welding process, so that the flat joint annular sunken groove 113 is preferably formed on the flat joint flange part 11.
In the present embodiment, the wire nipple axial direction steel wire 43 on the nipple connection cylinder portion 41 and the plain nipple axial direction steel wire 14 on the plain flange portion are mounted in the same manner, wherein the steel wires are mounted in the following three manners: 1. u-shaped steel wires penetrate through the adjacent mounting holes, and straight line sections of the U-shaped steel wires form plain end joint axial steel wires 14 or wire joint axial steel wires 43; 2. the axial steel wire 14 of the flat joint or the axial steel wire 43 of the wire joint is an L-shaped steel wire, the long section of the L-shaped steel wire penetrates through the corresponding mounting hole and forms the axial steel wire of the flat joint, and the short section of the L-shaped steel wire is in contact with the annular sinking groove 113 of the flat joint; 3. the head of the plain end axial steel wire 14 or the head of the wire end axial steel wire 43 is arranged as a pier head, so that the straight line section of the steel wire can be well limited and fixed by the pier head.
And for better connection between the metal part and the plastic part, the parts of the wire joint connecting cylinder part 41, the flat joint flange part 11, the flat joint axial steel wire 14 and the wire joint axial steel wire 43, which are contacted with the plastic, are coated with hot melt glue. And at least one circle of plain end outer ring positioning steel wire 15 and at least one circle of nipple outer ring positioning steel wire 44 are respectively fixed on the plain end axial steel wire 14 and the nipple axial steel wire 43, so that the axial steel wires can be prevented from shaking in the forming process.
As shown in fig. 5, the wire joint 4 includes a wire joint socket portion 42 and a metallic wire joint connection cylinder portion 41 disposed at one end of the wire joint socket portion 42, the wire joint connection cylinder portion 41 is provided with an external thread 45, a plurality of wire joint axial steel wires 43 are fixed to the circumference of the wire joint connection cylinder portion 41, the wire joint connection cylinder portion 41 is fixed to one end of the wire joint socket portion 42 by a separation-resistant structure, a wall of the wire joint socket portion 42 covers the axial steel wires 43 and a central hole surface of the wire joint connection cylinder portion 41, an outer end surface of the wire joint connection cylinder portion 41 is exposed and is fitted with the flat joint flange portion 11, an inner hole wall of the wire joint socket portion 42 is embedded with the heating wire 16, and the wire joint socket portion 42 is provided with a terminal 13 connected with the heating wire 16. A seal ring 5 is provided between the outer side surface of the wire joint connection cylinder portion 41 and the outer side surface of the flat joint flange portion 11.
The thread joint 4 has the same structure except that the thread joint connection cylinder portion 41 and the plain joint flange portion 11 have different structures, and therefore, the separation resistance structure and the steel wire fixing structure are the same as those of the plain joint 1, and therefore, the external thread 45 is provided outside the thread joint connection cylinder portion 41, the second caulking groove 46 is provided in the center hole of the thread joint connection cylinder portion 41, and the corresponding thread joint socket portion 42 covers the center hole to form a second annular insert. And the outer end face of the wire joint connecting cylinder part 41 is provided with a wire joint annular sunken groove 47, the wire joint annular sunken groove 47 is positioned at the periphery of the central hole, the bottom of the wire joint annular sunken groove 47 is provided with a plurality of mounting holes which are circumferentially arranged, and the wire joint axial steel wire 43 is fixed in the mounting holes.
When the composite pipe joint is used, firstly, the two composite pipes 2 are inserted into inner holes of the screw joint socket part sleeve part 42 and the flat joint socket part sleeve part 12, the joint socket part sleeve part and the flat joint socket part sleeve part 12 are also provided with positioning ring parts which are convenient to position with the end parts of the composite pipes 2, and when the composite pipes 2 cannot axially move, the end parts of the composite pipes are in contact with the positioning ring parts, so that the socket parts of the composite pipes 2 are determined to be in place; then the outer side surfaces of the wire joint connecting cylinder part 41 and the plain joint flange part 11 are opposite and the sealing ring 5 is installed, then the screw nut 3 is rotated to compress and fix the two parts, then the binding post 13 is electrified to heat the electric heating wire 16, the inner walls of the wire joint socket sleeve part 42 and the plain joint socket sleeve part 12 and the outer wall of the composite pipe 2 are heated and melted into a whole, so that the two parts are fixed firmly without separation, the electric melting connecting pipe fitting can be better connected with the composite pipe 2, and the loosening phenomenon caused by plastic creep is avoided.
The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and alterations made to the technical solution of the present invention without departing from the spirit of the present invention are intended to fall within the scope of the present invention defined by the claims.
Claims (10)
1. The utility model provides a plastic steel electric smelting connecting pipe spare, is connected its characterized in that including the flat joint and the silk joint of mutually supporting, connect through the nut between flat joint and the silk joint: the flat joint comprises a flat joint socket part sleeve part and a metal flat joint flange part arranged at one end of the flat joint socket part sleeve part, and the nut is rotatably sleeved outside the flat joint flange part and limited by the flange edge; a plurality of flat joint axial steel wires are fixed on the upper circumference of the flat joint flange part, the flat joint flange part is sleeved and fixed at one end of the flat joint socket sleeve part through an anti-separation structure, the pipe wall of the flat joint socket sleeve part is coated with the flat joint axial steel wires and the central hole surface of the flat joint flange part, the outer side end surface of the flat joint flange part is exposed, an electric heating wire is embedded in the inner hole wall of the flat joint socket sleeve part, and the flat joint socket sleeve part is provided with a binding post connected with the electric heating wire;
the wire joint comprises a wire joint socket sleeve part and a metal wire joint connecting barrel part arranged at one end of the wire joint socket sleeve part, wherein external threads are arranged on the wire joint connecting barrel part, a plurality of wire joint axial steel wires are fixed on the circumference of the wire joint connecting barrel part, the wire joint connecting barrel part is sleeved and fixed at one end of the wire joint socket sleeve part through an anti-separation structure, the pipe wall of the wire joint socket sleeve part coats the wire joint axial steel wires and the central hole surface of the wire joint connecting barrel part, the outer end surface of the wire joint connecting barrel part is exposed and matched with a flat joint flange part, an electric heating wire is embedded in the inner hole wall of the wire joint socket sleeve part, and the wire joint socket sleeve part is provided with a binding post connected with the electric heating wire.
2. A plastic-steel electrofusion pipe fitting as claimed in claim 1, characterized in that: the anti-separation structure on the flat joint flange part comprises a first caulking groove arranged on the central hole surface of the flat joint flange part, and the pipe wall of the flat joint socket sleeve part is coated on the central hole surface of the flat joint flange part and forms a first annular embedded block embedded into the first caulking groove.
3. A plastic-steel electrofusion pipe fitting as claimed in claim 2, characterized in that: the installation mode of the axial steel wire of the wire joint is the same as that of the axial steel wire of the plain joint, a plain joint annular sunken groove is arranged on the outer end face of the flange part of the plain joint and is positioned at the periphery of the central hole, a plurality of installation holes which are circumferentially arranged are arranged at the bottom of the plain joint annular sunken groove, and the axial steel wire of the plain joint is fixed in the installation holes.
4. A plastic-steel electrofusion pipe fitting as claimed in claim 3, characterized in that: u-shaped steel wires penetrate through the adjacent mounting holes, and straight line sections of the U-shaped steel wires form plain joint axial steel wires.
5. A plastic-steel electrofusion pipe fitting as claimed in claim 3, characterized in that: the axial steel wire is L-shaped, the long section of the L-shaped steel wire penetrates through the corresponding mounting hole and forms a flat joint axial steel wire, and the short section of the L-shaped steel wire is in contact with the annular sinking groove of the flat joint.
6. A plastic-steel electrofusion connection pipe fitting, according to claim 4 or 5, characterised in that: the hot melt adhesive is coated on the wire joint connecting cylinder part, the flat joint flange part, the flat joint axial steel wire and the contact part of the wire joint axial steel wire and the plastic.
7. A plastic steel electrofusion pipe fitting as claimed in claim 6, characterised in that: the inner side surface of the flange part of the flat joint protrudes to form an outer reinforcing ring part, the outer reinforcing ring part and the flange part of the flat joint are integrally formed, and the groove of the annular sinking groove of the flat joint is positioned on the outer reinforcing ring part.
8. A plastic steel electrofusion pipe fitting as claimed in claim 6, characterised in that: an outer reinforcing ring part is welded on the end face of the inner side of the flange part of the plain joint, the annular sinking groove of the plain joint is positioned on the flange part of the plain joint, and the outer reinforcing ring part coats the outer part of the socket sleeve part of the plain joint.
9. The plastic-steel electrofusion connection pipe fitting of claim 8, characterized in that: and at least one circle of plain joint outer ring positioning steel wire and at least one circle of wire joint outer ring positioning steel wire are fixed on the plain joint axial steel wire and the wire joint axial steel wire respectively.
10. A plastic-steel electrofusion pipe fitting as claimed in claim 9, characterized in that: and a sealing ring is arranged between the outer side surface of the wire joint connecting cylinder part and the outer side surface of the flat joint flange part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123094944.4U CN216307060U (en) | 2021-12-10 | 2021-12-10 | Plastic steel electric melting connecting pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123094944.4U CN216307060U (en) | 2021-12-10 | 2021-12-10 | Plastic steel electric melting connecting pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216307060U true CN216307060U (en) | 2022-04-15 |
Family
ID=81085088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123094944.4U Active CN216307060U (en) | 2021-12-10 | 2021-12-10 | Plastic steel electric melting connecting pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216307060U (en) |
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2021
- 2021-12-10 CN CN202123094944.4U patent/CN216307060U/en active Active
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