CN205371850U - PPR pipe fitting for hot and cold water - Google Patents

Abstract

The utility model discloses a PPR pipe fitting for hot and cold water, including metal insert, metal covering and pipe fitting, the technical problem that solve provides one kind can use for a long time the time under cold water or hot water environment, pipe fitting product that pipe fitting metal insert and pipe fitting plastics partially do not break away from. The utility model discloses the metal insert of PPR pipe fitting and the metal covering step through the metal insert tip cooperates the afrerdischarge to arrange plastic injection mold in to process, and the pipe fitting after the processing can restrict the terminal cladding of metal covering, metal covering pipe fitting and break away from the extension pipe fitting life -span because of expend with heat and contract with cold leads to metal insert and pipe fitting.

Description

A kind of hot and cold water PPR pipe part

Technical field

This utility model belongs to conduit coupling field, particularly to a kind of hot and cold water PPR pipe part.

Background technology

The hot and cold water PPR pipe part structure extensively sold on the market at present mostly is the version of PPR material cladding metalwork, as Chinese patent Authorization Notice No. CN203395472U discloses a kind of PPR pipe part, including main pipe body and copper insert, it is characterized in that, the surrounding distribution of described copper insert has injecting hole, copper insert is after injection molding, and the plastics of main pipe body are full of injecting hole combination staggered with copper insert.Owing to metalwork heat conductivity is good when this product in use has hot water or cold water to pass through, thermal expansion coefficients is little, and the PPR material thermal conductivity of external sheath is relatively poor, thermal expansion coefficients is big, therefore the impact being subject to hot water or cold water for a long time can cause that departing from occurs in the position combined between metal insert with PPR plastics, affect the sealing of pipe fitting, thus causing leakage accident.

Summary of the invention

The purpose of this utility model is in that to solve deficiency and the defect of current existing product, it is provided that a kind of hot and cold water PPR pipe part, and this fitting structure is stable, it is possible to depart from, with metal insert, the seepy question caused after preventing pipe fitting PPR plastics from shrinking because of longterm expansion.

This utility model solves the technical problem that and be the technical scheme is that a kind of hot and cold water PPR pipe part, including main pipe body and metal insert, metallic sheath, described metal insert is coated with by main pipe body after adopting injection molding, and metallic sheath and metal insert are disposable with main pipe body when injection moulding to carry out injection moulding and coordinate.

In a preferred embodiment of the present utility model, described metal insert is provided with 3 road metal grooves, metallic sheath is positioned over the ring-shaped step place of metal insert end, and when process of producing product, metallic sheath and metal insert are put into board simultaneously and carried out disposable injection molding and complete.

Described metal insert is stainless steel.

Described metal insert is copper material.

Described metallic sheath is stainless steel.

Described metallic sheath is copper material.

The beneficial effects of the utility model are: product described in the utility model in use can effectively prevent pipe fitting because being subject to the impact of hot water or cold water for a long time, the metal insert that metal insert and pipe fitting PPR plastics cause because of dilation combines with PPR plastics and is partially disengaged, and causes the generation of leakage accident.

This utility model can improve product quality, postpones pipe fitting service life, and processing is simple simultaneously, convenient for production.

Accompanying drawing explanation

Fig. 1 is the cross-sectional view of this utility model product.

In order to be illustrated more clearly that this utility model, below the accompanying drawing that embodiment is used is briefly described, accompanying drawing being merely cited for property explanation, it is impossible to be interpreted as restriction of the present utility model；For those skilled in the art, some embodiment in accompanying drawing can realize easily or known features and explanation thereof are omitted.

Detailed description of the invention

In order to make the technical solution of the utility model and enforcement purpose be easier to understand, below in conjunction with being specifically illustrating, this utility model is expanded on further.

As it is shown in figure 1, a kind of hot and cold water PPR pipe part, including metal insert 1, metallic sheath 2 and main pipe body 3, described metal insert 1 main body being provided with 3 road grooves 101, there is the step 102 arranging metallic sheath placement metal insert 1 end.After metallic sheath 2 is positioned over the port step 102 of metal insert 1 in the course of processing, using injection machine by main pipe body 3 injection mo(u)lding, the resultant metal after injection mo(u)lding overlaps 2 ends and combines with main pipe body 3 cladding.Metallic sheath 2 can effectively limit main pipe body 3 when being subject to hot water or cold water expanded by heating and metal insert that deformation causes 1 and main pipe body 3 are mutually disengaged, it is prevented that the generation of leakage accident.

In order to better make main pipe body 3 be combined with metal insert 1, metal insert 1 main body that this utility model adopts arranges 3 road grooves 101 to prevent pipe fitting to be subject to hydraulic pressure effect to depart from main pipe body 3.

Described metal insert 1 is stainless steel.

Described metal insert 1 is copper material.

Described metallic sheath 2 is stainless steel.

Described metallic sheath 2 is copper material.

More than in conjunction with elaborating detailed description of the invention of the present utility model and realize principle shown in Fig. 1, but not it it is the restriction to embodiment of the present utility model.For the technical staff of the industry, the basis of above-mentioned detailed description of the invention can also be made multi-form changes and improvements.Under the premise without departing from spirit and scope of the present utility model, this utility model also has various based on the improvement of same principle, change, and these changes shall fall within protection domain of the present utility model.

Claims (6)

1. a hot and cold water PPR pipe part, including metal insert (1), metallic sheath (2) and main pipe body (3), described metal insert (1) matches after injection molding with metallic sheath (2), plastic overmold metallic sheath (2) end of main pipe body (3).

2. a kind of hot and cold water PPR pipe part as claimed in claim 1, it is characterised in that described metal insert main body has 3 road grooves (101), and the step (102) that metallic sheath (2) is placed is arranged at top.

3. a kind of hot and cold water PPR pipe part as claimed in claim 1, it is characterised in that described metal insert (1) is stainless steel.

4. a kind of hot and cold water PPR pipe part as claimed in claim 1, it is characterised in that described metal insert (1) is copper material.

5. a kind of hot and cold water PPR pipe part as claimed in claim 1, it is characterised in that described metallic sheath (2) is stainless steel.

6. a kind of hot and cold water PPR pipe part as claimed in claim 1, it is characterised in that described metallic sheath (2) is copper material.