CN212226367U

CN212226367U - Hot melting joint with metal protective sleeve

Info

Publication number: CN212226367U
Application number: CN202020647947.2U
Authority: CN
Inventors: 陈友苗; 陈奎宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-12-25
Anticipated expiration: 2030-04-24

Abstract

The utility model belongs to the technical field of the pipe fitting, refer in particular to a take metal protective sheath's hot melt joint, it includes inner tube and the outer tube of making by plastics, the inner tube is fixed in the outer tube through an at least splice bar to form inner flow channel and outer flow channel the cover is equipped with metal protective sheath on the internal surface of at least one tip of inner tube or the surface. The utility model discloses tip at the inner tube is provided with metal protection sleeve, and when the outer tube hot melt, metal protection sleeve can prevent that the hot melting ware of high temperature from softening the inner tube, guarantees the installation accuracy of inner tube, convenient location and installation simultaneously.

Description

Hot melting joint with metal protective sleeve

Technical Field

The utility model belongs to the technical field of the pipe fitting, refer in particular to a take metal protective sheath's hot melt to connect.

Background

The hot-melt connection is widely applied to connection of novel pipes such as PP-R pipes, PB pipes, PE-RT pipes, metal composite pipes, curved elastic vector aluminum alloy lining plastic composite pipeline systems and the like and pipe fittings, and is a connection mode after heating to a liquid melting point.

The utility model discloses a chinese application number is 201820054374.5 utility model discloses a coupling of pipe in pipe and connecting pipe, this pipe in pipe and coupling mainly are connected through the hot melt, when the outer tube inner wall of hot melt coupling with traditional hot melt ware, can indirect contact inner tube at hot melt in-core surface, because the temperature of hot melt in-core surface is also very high, space between coupling inner tube and the outer tube is very little in addition, leads to the coupling inner tube to be heated and softens, warp easily, the location and the installation of inner tube after inconvenient hot melt.

Disclosure of Invention

The utility model aims at providing a simple structure effectively prevents the pipe-in-pipe inner tube softening, the hot melt joint who warp.

The purpose of the utility model is realized like this:

the hot-melting joint with the metal protective sleeve comprises an inner pipe and an outer pipe which are made of plastics, wherein the inner pipe is fixed in the outer pipe through at least one connecting rib, an inner flow passage and an outer flow passage are formed, and the metal protective sleeve is sleeved on the inner surface or the outer surface of at least one end part of the inner pipe.

The utility model discloses further set up, the outer end bending of metal protective sheath forms the arc protection portion of parcel inner tube end wall.

The utility model discloses further set up, the installation annular has been seted up to the tip of inner tube, the metal protection cover joint is in the installation annular.

The utility model discloses further set up, when the installation annular is seted up at the outer surface of inner tube, at the inner junction of installation annular, the external diameter of metal protection cover and the external diameter of inner tube are unanimous, perhaps, when the installation annular is seted up at the inner surface of inner tube, at the inner junction of installation annular, the external diameter of metal protection cover and the internal diameter of inner tube are unanimous.

The utility model discloses further set up, the metal protective sheath is the round platform form, and is provided with arc guide part on the inner contact surface.

The utility model discloses further set up, the outer tube terminal surface is stretched out to the tip of inner tube.

The utility model discloses further set up, inner tube and the coaxial setting of outer tube.

The utility model discloses further set up, the inboard inside sunken hot melt direction annular that forms of tip of outer tube, or/and the tip outside circumference of outer tube is formed with a plurality of hot melt reinforcing grooves.

The utility model discloses further set up, be provided with valve installation end on the hot melt joint, valve installation end includes the valve mounting hole and sets up the valve connecting portion in the valve mounting hole, the valve connecting hole of runner or outer runner in the intercommunication has been seted up in the valve connecting portion.

The utility model discloses further set up, runner or outer runner in the bottom intercommunication of valve mounting hole.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. the utility model discloses tip at the inner tube is provided with metal protection sleeve, and when the outer tube hot melt, metal protection sleeve can prevent that the hot melting ware of high temperature from softening the inner tube, guarantees the installation accuracy of inner tube, convenient location and installation simultaneously.

2. The utility model discloses a be provided with the installation annular on the inner tube, conveniently restrict the position of metal protection cover, simultaneously, the size at the junction is unanimous for the internal surface or the surface of inner tube do not have the arch, the installation of convenient and pipe-in-pipe.

3. The outer end of the metal protective sleeve is provided with an arc-shaped protective part, so that the metal protective sleeve and the pipe-in-pipe inner pipe can be conveniently installed after hot melting; the arc-shaped guide part and the circular truncated cone shape at the inner end facilitate the guide installation of the metal protective sleeve.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a metal protective sheath according to a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a metal protective sheath according to a second embodiment of the present invention.

Fig. 5 is a schematic structural view of a elbow two-way joint according to a third embodiment of the present invention.

Fig. 6 is a schematic structural view of a three-way joint according to a fourth embodiment of the present invention.

Fig. 7 is a schematic structural view of a three-way joint with a valve mounting end according to a fifth embodiment of the present invention.

Fig. 8 is a schematic structural view of a two-way joint with a valve mounting end according to a sixth embodiment of the present invention.

The reference numerals in the figures denote the meanings:

1-inner tube; 2-an outer tube; 3-connecting ribs; 4, mounting a ring groove; 5-hot melting the guide ring groove; 6-hot melting reinforcing groove;

10-a metal protective sheath; 11-an arc-shaped protection part; 12-an arcuate guide;

21-valve mounting holes; 22-a valve connection; 23-valve connection hole.

Detailed Description

The invention will be further described with reference to specific embodiments below:

the first embodiment is as follows:

as shown in fig. 1-2, a thermal fusion joint with a metal protection sleeve comprises an inner tube 1 and an outer tube 2 made of plastics, wherein the inner tube 1 is fixed in the outer tube 2 through at least one connecting rib 3 to form an inner flow passage and an outer flow passage, and the inner tube 1 and the outer tube 2 are coaxially arranged for convenience of processing and installation. The outer surface of at least one end of the inner pipe 1 is sleeved with a metal protective sleeve 10, and the metal protective sleeve 10 is made of iron, copper, aluminum and alloy. When the outer tube hot melt, the metal protective sheath can prevent that the hot melt ware of high temperature from softening the inner tube, guarantees the installation accuracy of inner tube, convenient location and installation simultaneously. The outer end of the metal protective sleeve 10 is bent to form an arc-shaped protective part 11 wrapping the end wall of the inner pipe 1, so that the metal protective sleeve and the inner pipe in the pipe can be conveniently installed after hot melting. The inner diameter of the arc protection portion 11 is kept uniform with the inner diameter of the inner pipe so as not to affect the sectional area of the inner flow path. The metal protection sleeve 10 is in a round table shape, and an arc-shaped guide part 12 is arranged on the contact surface at the inner end, so that the metal protection sleeve can be conveniently guided and installed.

The utility model discloses further set up, 2 terminal surfaces of outer tube are stretched out to the tip of inner tube 1, make things convenient for alignment and installation after the hot melt. The outer surface of the end part of the inner pipe 1 is provided with an installation ring groove 4, and the metal protective sleeve 10 is clamped in the installation ring groove 4. At the inner end junction of the mounting ring groove 4, the outer diameter of the metal protective sleeve 10 is consistent with that of the inner pipe 1, so that the outer surface of the inner pipe is not provided with a bulge, and the mounting of the inner pipe in the pipe is facilitated.

The utility model discloses further set up, the inboard inside sunken hot melt direction annular 5 that forms of tip of outer tube 2, or/and the tip outside circumference of outer tube 2 is formed with a plurality of hot melt reinforcing grooves 6. The hot melt guide ring groove 5 facilitates the quick positioning work of a hot melt machine, when the hot melt machine is connected in a hot melting mode, redundant molten plastic enters the hot melt reinforcing groove 6, and after the hot melt reinforcing groove is cooled, reinforcement is achieved.

Example two:

as shown in fig. 3-4, the present embodiment is substantially the same as the first embodiment, and the difference is: the metal protection sleeve 10 is an inner lining and is clamped on the inner surface of the inner pipe, the outer end of the metal protection sleeve is bent outwards to form an arc protection part 11 wrapping the end wall of the inner pipe 1, and the outer diameter of the arc protection part 11 is consistent with the outer diameter of the inner pipe. When the inner tube is softened by heat, the metal protective sheath 10 can be shaped to prevent deformation.

For convenience of installation, the inner surface of the end part of the inner pipe 1 may be provided with an installation ring groove 4, and at the joint of the inner ends of the installation ring grooves 4, the outer diameter of the metal protection sleeve 10 is consistent with the inner diameter of the inner pipe 1.

Example three, four:

as shown in fig. 5 to 6, in the present embodiment, the thermal fusion joint may be a two-way joint, a three-way joint, a four-way joint, or the like.

Example five:

as shown in fig. 7, the present embodiment is substantially the same as the first embodiment, and the difference is: be provided with valve installation end on the hot melt joint, valve installation end includes valve mounting hole 21 and sets up the valve connecting portion 22 in valve mounting hole 21, set up the valve connecting hole 23 that communicates interior runner or outer runner in valve connecting portion 22, conveniently realize interior runner or outer runner through the valve and go out water.

In order to facilitate the installation of the valve, a lining thread sleeve is arranged in the valve installation hole 21.

Example six:

on the basis of the fifth embodiment, the bottom of the valve mounting hole 21 is communicated with the inner flow passage or the outer flow passage. The following is a detailed description:

1. as shown in fig. 8, when the valve connecting hole 23 communicates the inner flow passage and the valve mounting hole 21 communicates the outer flow passage, the control of the inner and outer flow passages can be achieved by the valve.

2. When the valve connecting hole 23 is communicated with the outer flow passage and the valve mounting hole 21 is communicated with the inner flow passage, the principle is the same as that of the structure 1, and the control of the inner flow passage and the outer flow passage can be realized through the valve.

3. When the valve connecting hole 23 communicates with one end of the inner flow passage and the valve mounting hole 21 communicates with the other end of the inner flow passage, the control of the inner flow passage can be achieved by the valve. The structure is mainly applied to a tee joint, specifically, the tee joint is provided with a valve mounting end and two pipe-in-pipe connecting ends, inner flow channels of the two pipe-in-pipe connecting ends are not directly communicated, but are communicated with each other through a valve connecting hole and a valve mounting hole 21, and the tee joint is controlled through a valve.

4. When the valve connecting hole 23 is communicated with one end of the outer flow passage and the valve mounting hole 21 is communicated with the other end of the outer flow passage, the control of the outer flow passage can be realized through the valve, and the structure is also mainly applied to a three-way connector and has the same principle as the 3 rd structure.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a take metal protective sheath's hot melt to connect, includes inner tube (1) and outer tube (2) made by plastics, inner tube (1) is fixed in outer tube (2) through at least one splice bar (3) to form inner flow way and outer runner, its characterized in that: a metal protective sleeve (10) is sleeved on the inner surface or the outer surface of at least one end of the inner pipe (1).

2. A hot-melt joint with metal sheath according to claim 1, wherein: the outer end of the metal protective sleeve (10) is bent to form an arc-shaped protective part (11) wrapping the end wall of the inner pipe (1).

3. A thermofussion joint with metal sheath according to claim 1 or 2, wherein: the end part of the inner pipe (1) is provided with an installation ring groove (4), and the metal protective sleeve (10) is clamped in the installation ring groove (4).

4. A thermofussion joint with metal sheath according to claim 3, wherein: when the outer surface of inner tube (1) is seted up in installation annular groove (4), at the inner junction of installation annular groove (4), the external diameter of metal protection cover (10) is unanimous with the external diameter of inner tube (1), perhaps, when installation annular groove (4) are seted up in the inner surface of inner tube (1), at the inner junction of installation annular groove (4), the external diameter of metal protection cover (10) is unanimous with the internal diameter of inner tube (1).

5. A hot-melt joint with metal sheath according to claim 4, characterized in that: the metal protective sleeve (10) is in a circular truncated cone shape, and an arc-shaped guide part (12) is arranged on the contact surface of the inner end.

6. A thermofussion joint with metal sheath according to claim 1 or 2, wherein: the end part of the inner pipe (1) extends out of the end surface of the outer pipe (2).

7. A thermofussion joint with metal sheath according to claim 1 or 2, wherein: the inner pipe (1) and the outer pipe (2) are coaxially arranged.

8. A thermofussion joint with metal sheath according to claim 1 or 2, wherein: the inner side of the end part of the outer pipe (2) is inwards sunken to form a hot melting guide ring groove (5), or/and a plurality of hot melting reinforcing grooves (6) are formed in the circumferential direction of the outer side of the end part of the outer pipe (2).

9. A thermofussion joint with metal sheath according to claim 1 or 2, wherein: the hot melting connector is provided with a valve mounting end, the valve mounting end comprises a valve mounting hole (21) and a valve connecting part (22) arranged in the valve mounting hole (21), and a valve connecting hole (23) communicated with an inner flow passage or an outer flow passage is formed in the valve connecting part (22).

10. A thermofussion joint with metal sheath according to claim 9, wherein: the bottom of the valve mounting hole (21) is communicated with an inner flow passage or an outer flow passage.