CN201339746Y

CN201339746Y - Thermo-plastic resin pipeline blind valve

Info

Publication number: CN201339746Y
Application number: CNU2009200671585U
Authority: CN
Inventors: 叶纶
Original assignee: SHANGHAI SHANGFENG GROUP CO Ltd
Current assignee: Shanghai Haochen Enterprise Development Co., Ltd.
Priority date: 2009-01-20
Filing date: 2009-01-20
Publication date: 2009-11-04
Anticipated expiration: 2019-01-20

Abstract

The utility model relates to a thermo-plastic resin pipeline blind valve, comprising a thermo-plastic resin valve body (13) and a metal insert (12); a layer of thermo-plastic resin (14) is additionally coated outside of the opening part of the metal insert (12); one end of the thermo-plastic resin (14) is integrated with the thermo-plastic resin valve body (13), and the other end and the internal threads of the metal insert (12) are leveled along the surface; the internal threads of the opening part of the metal insert (12) is mechanically connected with the external threads of a valve core; the root part of a valve seat is connected with the thermo-plastic resin pipeline material by hot melting. The thermo-plastic resin pipeline blind valve has the beneficial effects that the usage of connecting fittings is reduced and the connecting quality of the pipeline is improved.

Description

The dark valve of thermoplastic resin pipeline

Technical field

The utility model relates to the dark valve that a kind of valve seat that is combined with the metal insert injection moulding by thermoplastic resin and ceramic valve core are formed, and relates in particular to the valve seat of this dark valve.

Background technique

By Figure 1A-1D as seen: whole valve seat is cast by metal in the prior art, the outside thread mechanical connection of the internal thread of its oral area and spool, the internal thread at its root two ends and metal flange (or pipe fitting of other metal-containing joints) mechanical connection.Among the figure: seal ring 10, spool 11.

Because existing dark valve is applied in the thermoplastic resin pipeline mostly, according to prior art, dark valve is wanted to be connected with thermoplastic resin tubing hot melt more earlier with behind metal flange (or pipe fitting of other metal-containing joints) mechanical connection, so both increase difficulty of construction and cost, influenced construction speed and quality again.For addressing the above problem, be necessary the structure of dark valve is designed.

Summary of the invention

The utility model technical issues that need to address have provided the dark valve of a kind of thermoplastic resin pipeline, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises: thermoplastic resin valve body and metal insert; Add in the outside of valve seat metal insert oral area and to cover one deck thermoplastic resin; One end and the thermoplastic resin valve body of described thermoplastic resin are connected as a single entity, and the other end is equal along face with the internal thread of metal insert; The outside thread mechanical connection of metal insert oral area internal thread and spool; The root of valve seat is connected with thermoplastic resin tubing hot melt.

Compared with prior art, the beneficial effects of the utility model are: reduced the use of connection fittings, improved the quality of connection of pipeline.

Description of drawings

Figure 1A is a dark valve arrangement constitutional diagram in the prior art;

Figure 1B is a dark valve core structure elevation among Figure 1A;

Fig. 1 C is dark valve base structural plan figure among Figure 1A;

Fig. 1 D is the sectional drawing of Fig. 1 C;

Fig. 2 A is the utility model structural plan figure;

Fig. 2 B is the sectional drawing of Fig. 2 A.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

By Fig. 2 A, Fig. 2 B as seen: the utility model comprises: thermoplastic resin valve body 13 and metal insert 12; Add in the outside of valve seat metal insert 12 oral areas and to cover one deck thermoplastic resin 14; One end and the thermoplastic resin valve body 13 of described thermoplastic resin 14 are connected as a single entity, and the other end is equal along face with the internal thread of metal insert 12; The outside thread mechanical connection of metal insert oral area 12 internal threads and spool; The root of valve seat is connected with thermoplastic resin tubing hot melt;

The thickness of described thermoplastic resin 14 is 0.5～10mm.

Add in the utility model and cover thermoplastic layer and increased area of contact with metal insert, improved the compressive strength of stop valve; Add and cover thermoplastic layer and changed propagation of pressure path between metal insert and the thermoplastic resin sealing, add and cover thermoplastic layer under the pressing of valve core seal ring, improved compressive strength, guaranteed to connect the quality of back pipeline.The root of valve seat thermoplastic resin can be connected with thermoplastic resin tubing hot melt in addition, has guaranteed the quality of connection of pipeline.

Claims

1. the dark valve of thermoplastic resin pipeline comprises: thermoplastic resin valve body (13) and metal insert (12); It is characterized in that: add in the outside of metal insert (12) oral area and cover one deck thermoplastic resin (14); One end of described thermoplastic resin (14) and thermoplastic resin valve body (13) are connected as a single entity, and the other end is equal along face with the internal thread of metal insert (12); The outside thread mechanical connection of metal insert oral area (12) internal thread and spool; The root of valve seat is connected with thermoplastic resin tubing hot melt.

2. the dark valve of thermoplastic resin pipeline according to claim 1 is characterized in that: the thickness of described thermoplastic resin (14) is 0.5～10mm.