CN203517133U

CN203517133U - Double-hot-melt steel-plastic composite pipeline butt fusion structure

Info

Publication number: CN203517133U
Application number: CN201320368535.5U
Authority: CN
Inventors: 王鹊鸣; 徐焕松
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-19
Filing date: 2013-06-19
Publication date: 2014-04-02
Anticipated expiration: 2023-06-19

Abstract

The utility model discloses a double-hot-melt steel-plastic composite pipeline butt fusion structure, and belongs to the technical field of pipeline connection. The double-hot-melt steel-plastic composite pipeline butt fusion structure comprises a steel-plastic composite pipe, a plastic pipe fitting and a pipe fitting sleeve joint plastic head. A sleeve joint opening is formed in at least one end of the pipe fitting sleeve joint plastic head. The plastic pipe fitting is provided with an inner annular wall, an outer annular wall and a socket, wherein the socket is located between the inner annular wall and the outer annular wall. The steel-plastic composite pipe is inserted into the socket in advance for conducting electromagnetic butt fusion. The sleeve joint opening of the pipe fitting sleeve joint plastic head is formed in the portion, at the end opposite to the end provided with the socket, of the periphery of the plastic pipe fitting in a sleeved mode for conducting hot melt socket connection. By the adoption of the technical scheme, due to the fact that the steel-plastic composite pipe is inserted into the socket of the plastic pipe fitting in advance for conducting electromagnetic butt fusion, the pipe fitting sleeve joint plastic head is arranged on the portion, at the end opposite to the end provided with the socket, of the periphery of the plastic pipe fitting in a sleeved mode for conducting hot melt connection, operability is high, connection strength is high, connection is reliable and free of leakage, the inner annular wall of the socket plays a role in supporting the steel-plastic composite pipe, and the plastic pipe fitting can be reliably fixed and connected through the pipe fitting sleeve joint plastic head.

Description

A kind of pair of hot melt composite metal plastic pipe welding structure

[technical field]

The utility model relates to being connected of a kind of steel-plastic composite pipe and plastic tube fitting, belongs to pipeline connection technology field.

[background technique]

As shown in Figure 2, sealing sleeve 4C one made of plastic, forms birdsmouth 43 between the internal ring wall 41 of its right-hand member, external annulus 42, and the left end of internal ring wall 41 extends to form welded joint 44.

While connecting aluminium-plastic composite pipe 4B with socket pipe member 4A, first hot melt processing is carried out respectively in the end of the birdsmouth of sealing sleeve 4C 43 and aluminium-plastic composite pipe 4B, then aluminium-plastic composite pipe 4B is injected in the birdsmouth 43 of sealing sleeve 4C, so that the two is welded together, use afterwards the welded joint 44 and socket pipe member 4A welding of sealing sleeve 4C.

Due to sealing sleeve 4C belong to first hot melt with the connection of aluminium-plastic composite pipe 4B after together with socket connection, there is hidden leakage defect between the two, socket pipe member 4A docks welding with sealing sleeve 4C, join strength is low, the inside and outside wall of aluminium-plastic composite pipe 4B only depends on the inside and outside wall of sealing sleeve 4C spacing, and after aluminium-plastic composite pipe 4B hot melt, splicing stability is poor; Moreover sealing sleeve 4C wall ratio aluminium-plastic composite pipe 4B's is much thick, both connect rear visible, and internal ring wall 41 ends are protruding to be exposed to outside aluminium-plastic composite pipe 4B inwall, make fluid form a flow resistance at this place, thereby affect pipeline flow.

[model utility content]

The deficiency that the utility model exists for above-mentioned prior art and two hot melt composite metal plastic pipe welding structures that a kind of hidden leakage defect is little are provided.

For solving the problems of the technologies described above, the utility model provides following technological scheme:

A kind of pair of hot melt composite metal plastic pipe welding structure, comprise steel-plastic composite pipe, plastic pipe and pipe fitting sleeving plastic cap, at least one end of described pipe fitting sleeving plastic cap has socket, described plastic pipe has internal ring wall, external annulus and the joint socket between inside and outside ring wall, described steel-plastic composite pipe is inserted in joint socket in advance, to carry out electromagnetic welding, the socket of described pipe fitting sleeving plastic cap is placed in the plastic pipe periphery of joint socket opposite end, to carry out thermofusible spigot connection.

As to technique scheme supplement and perfect, the utility model can also adopt following concrete technical measures:

In order to improve the hot-melting sealed between its port of pipe fitting sleeving plastic cap and plastic pipe, the socket of above-mentioned pipe fitting sleeving plastic cap also includes seam step, and above-mentioned plastic pipe is resisted against on this seam step.

The internal ring wall of above-mentioned plastic pipe is bell mouth shape, and internal ring wall its wall thickness corresponding with joint socket bottom is thicker, and the wall thickness of the internal ring wall corresponding with joint socket port is thinner.

The internal ring wall of plastic pipe is after bell mouth shape, and fluid is smooth and easy, little on the impact of pipeline flow.

Compared with prior art, the utlity model has following advantage and beneficial effect:

Because steel-plastic composite pipe is to be inserted in advance in the joint socket of plastic pipe, to carry out electromagnetic welding, and pipe fitting sleeving plastic cap is placed in the plastic pipe periphery of joint socket opposite end, to carry out hot melt connection, workable, join strength is large, connects reliable and non-leakage, the internal ring wall of joint socket has supporting role to steel-plastic composite pipe, and pipe fitting sleeving plastic cap plays to plastic pipe the effect that is fixedly connected with reliably.

[accompanying drawing explanation]

Below in conjunction with accompanying drawing, with regard to the utility model, be described in further detail.

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the schematic diagram that existing sealing sleeve, aluminium-plastic composite pipe are connected with socket pipe member.

[embodiment]

Referring to shown in Fig. 1, is preferred embodiment of the present utility model.

A kind of pair of hot melt composite metal plastic pipe welding structure, comprise steel-plastic composite pipe 1, plastic pipe 2 and pipe fitting sleeving plastic cap 3, at least one end at pipe fitting sleeving plastic cap 3 has socket 30, plastic pipe 2 has internal ring wall 21, external annulus 22 and the joint socket between inside and outside ring wall 20, steel-plastic composite pipe 1 is inserted in joint socket 20 in advance, to carry out electromagnetic welding, the socket 30 of pipe fitting sleeving plastic cap 3 is placed in plastic pipe 2 peripheries of joint socket 20 opposite ends, to carry out hot melt connection.

In order to improve the sealability between pipe fitting sleeving plastic cap 3 its ports and plastic pipe 2, the socket 30 of pipe fitting sleeving plastic cap 3 also includes seam step 31, and plastic pipe 2 is resisted against on this seam step 31.

The internal ring wall 21 of plastic pipe 2 is bell mouth shape, and internal ring wall its wall thickness corresponding with joint socket 20 bottoms is thicker, and the wall thickness of the internal ring wall corresponding with joint socket 20 ports is thinner.

The internal ring wall of plastic pipe 2 is after bell mouth shape, and fluid smooth and easy is little on the impact of pipeline flow.

In the present embodiment, above-mentioned pipe fitting sleeving plastic cap 3 all has symmetrical socket 30,30-1 and seam step 31,31-1 at its two end, therefore, these two sockets all can be installed respectively a plastic pipe, the joint socket of each plastic pipe steel-plastic composite pipe of all can planting, during specific operation, the joint socket of each plastic pipe first pre-steel-plastic composite pipe of planting, to carry out electromagnetic welding, and then all carries out hot melt by the plastic pipe position of joint socket opposite end with the socket of pipe fitting sleeving plastic cap and is connected under molten state.

Although the utility model discloses with specific embodiment, but it is not in order to limit the utility model, any those skilled in the art has done under the prerequisite that does not depart from design of the present utility model and scope is equal to displacement, or equivalent variations and the modification under the prerequisite according to design of the present utility model and scope, done, all should still belong to the category that this patent is contained.

Claims

1. a two hot melt composite metal plastic pipe welding structure, it is characterized in that: comprise steel-plastic composite pipe, plastic pipe and pipe fitting sleeving plastic cap, at least one end of described pipe fitting sleeving plastic cap has socket, described plastic pipe has internal ring wall, external annulus and the joint socket between inside and outside ring wall, described steel-plastic composite pipe is inserted in joint socket in advance, to carry out electromagnetic welding, the socket of described pipe fitting sleeving plastic cap is placed in the plastic pipe periphery of joint socket opposite end, to carry out thermofusible spigot connection.

2. according to claim 1 pair of hot melt composite metal plastic pipe welding structure, is characterized in that: the socket of described pipe fitting sleeving plastic cap also includes seam step, and described plastic pipe is resisted against on this seam step.

3. according to claim 1 pair of hot melt composite metal plastic pipe welding structure, it is characterized in that: the internal ring wall of described plastic pipe is bell mouth shape, internal ring wall its wall thickness corresponding with joint socket bottom is thicker, and the wall thickness of the internal ring wall corresponding with joint socket port is thinner.