CN2559859Y

CN2559859Y - Composite pipe fittings

Info

Publication number: CN2559859Y
Application number: CN 02272062
Authority: CN
Inventors: 李志雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-30
Filing date: 2002-07-30
Publication date: 2003-07-09
Anticipated expiration: 2012-07-30

Abstract

A composite pipe fitting used for steel-plastic composite pipes, aluminum-plastic composite pipes and copper-plastic composite pipes consists of a pipe fitting body, sealing rings, a fastening nut, and so on, the pipe fitting body is in external injection molding with metal linings like copper (or stainless steel), etc., a lining end part is a male cone, which is opened with a ring-shape sealing ring groove, The tail part of the nut is provided with an inner cone, the cone angle of which is consistent with the cone angle of the end part of the pipe body, a plurality of vertical glutens are arranged on the external surface of the nut. When the utility model is installed, the nut is firstly sleeved on the pipe, the port of which is then flared, the sealing rings are separately sleeved on the root of the pipe body lining and the ring-shape groove, then the pipe body is plugged into the flared end of the composite pipe, after the nut being screwed tightly, the installation process can be finished. One end of the pipe fitting body can be processed into the form of thread so as to be connected with other pipe materials and pipe fittings. In order to be conveniently produced, the metal lining of the pipe body can be made into split type.

Description

A kind of composite pipe pipe fitting

Affiliated technical field:

The utility model relates to a kind of pipe fitting, specifically is a kind of composite pipe pipe fitting.

Background technique:

At present, the copper ferrule-type pipe fitting of the general employing of the composite pipe of known technology, this pipe fitting mainly relies on snap ring and composite pipe external wall friction power to bear the axial force of pipe-line system, and it is unreliable to connect.Between the outer wall of composite pipe and pipe fitting with the seal ring sealing, poor sealing, and the complex structure of pipe fitting, the cost height has greatly limited the large scale application of composite pipe.

Summary of the invention:

Connect unreliable, poor sealing and the high deficiency of cost in order to overcome existing pipe fitting, the utility model provides a kind of composite pipe pipe fitting, and this pipe fitting not only is connected firmly, and sealability is good, and simple in structure, and is with low cost.The technological scheme that its technical problem that solves the utility model adopts is:

Adopt several major parts such as pipe fitting, seal ring, nut, metal inner lining.Pipe fitting is injection molded outside by copper metal inner linings such as (or stainless steels), and the liner end is a male cone (strobilus masculinus), has the ring packing ring recess on the conical surface.Nut one end adopts common internal thread, and the other end has inner conical surface, and its cone angle is consistent with body end cone angle; The nut outer surface is provided with some longitudinal ribs, can use hook-headed wrench to install; Seal ring is plain cushion O-ring seal and common O RunddichtringO.

For the ease of making, the liner of pipe fitting also can be made the form of split.The other end of pipe fitting can be made various forms such as band pipe thread, so that connect with steel pipe or other pipe-line system.The beneficial effects of the utility model are:

Given full play to the high-intensity characteristics of plastics good corrosion resistance and metalwork, pipe fitting join strength height, good sealing effect, simple in structure,, cost is low, easy for installation; Has outstanding anti-corrosion function.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model figure that is linked and packed.

Fig. 2 is the figure that is linked and packed that the liner of pipe fitting is made separate form.

Fig. 3 is the figure that is linked and packed that an end of pipe fitting is made the form of the pipe thread that is connected with steel pipe.

1. pipe fittings among the figure, 2. seal ring, 3. nut, 4. metal inner lining, 5. composite pipe, 6. steel pipe.

Specific embodiment:

In Fig. 1, earlier nut (3) is placed on the composite pipe (5) during installation,, on pipe fitting (1) liner root and circular groove, is inserted in plain cushion O-ring seal and common O RunddichtringO (2) respectively then with the composite pipe expanding end, insert the composite pipe flared end, fastening nut is installation.

In Fig. 2,, also metal inner lining can be made the form of split for easily manufactured.

In Fig. 3, the other end of pipe fitting can be made the form of band pipe thread.

Claims

1. composite pipe pipe fitting, employing is made of the Connecting format of composite pipe expanding end parts such as pipe fitting, seal ring, nuts, it is characterized in that: pipe fitting is injection molded outside by metal inner linings such as copper, stainless steels, the liner end is a male cone (strobilus masculinus), has the ring packing ring recess on the conical surface.

2. a kind of composite pipe pipe fitting according to claim 1, it is characterized in that: the liner of pipe fitting can be made the separate form of being convenient to make.

3. a kind of composite pipe pipe fitting according to claim 1 is characterized in that: the other end of pipe fitting can be made band pipe thread, other form.

4. a kind of composite pipe pipe fitting according to claim 1 is characterized in that: nut one end has inner conical surface, and cone angle is consistent with the pipe fitting end cone angle, and the other end has the internal thread that is connected with pipe fitting.