CN2039785U

CN2039785U - Pipe joint for central heating

Info

Publication number: CN2039785U
Application number: CN 88220052
Authority: CN
Inventors: 盛达; 唐德胜
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 1988-11-24
Filing date: 1988-11-24
Publication date: 1989-06-21

Abstract

A plumbing pipe joint, consisting of a joint main body (5), a compression nut (6), and a sealing washer (7). The pipe to be connected (8) directly extends into the joint main body, and the compression nut squeezes the sealing washer. It plays the role of sealing and fixing the pipe. Compared with commonly used pipe joints, the number of parts is greatly reduced, and cast iron can be saved by 25-30%. Moreover, the pipe to be connected and the main body of the joint are not threaded, so the requirements for its length and size are relatively low, and the installation is convenient.

Description

Pipe joint for central heating

The utility model belongs to pipe-line system, especially the link in the water heating system.

At present, in the hot-water heating pipe-line system, the general Placement of pipeline is to connect by taking over transition, and required part is more, takes material, when taking a lot of work.Chinese patent 87207919 model utilitys have been simplified joint (seeing accompanying drawing 1), its working principle is that adapter body (1) links to each other with the radiator that will be connected, transition connecting tube (4) links to each other with adapter body and seals by gland nut (2) and seal washer (3).But four parts of still needing are formed, and cost is higher, and are threaded with the water pipe employing, and are tighter to the length size requirement of pipe when mounted, difficult during installation.

The purpose of this utility model is the less pipe coupling of a kind of part of development, to reduce material and expenditure of time, reduces cost.

Formation of the present utility model is the cancellation connecting tube, and water pipe directly links to each other with adapter body and seals by seal washer.

The structure of 2 explanations pipe coupling of the present utility model is as follows in conjunction with the accompanying drawings:

This joint is made up of adapter body (5) and gland nut (6) seal washer (7), there is screw thread at adapter body (5) two ends, one end links to each other with radiator, the other end and gland nut (6) match, and at inside placement seal washer (7), the pipe that connect (8) passes seal washer and gland nut stretches in the adapter body, tightens gland nut, make the seal washer distortion, seal.

The utility model has the advantages that and reduced part number,, can save cast iron 25--30% approximately so but economical with materials and save man-hour is compared with existing pipe coupling, in addition, directly insert in the adapter body because of connecting pipe, utilize frictional force to fix, need not be threaded, so when mounted, tube length is not had strict requirement, the surplus of freely stretching is arranged, easy for installation.

Embodiment of the present utility model is as follows:

When connecting radiator and intake pipe with pipe coupling of the present utility model, adapter body (5) links to each other with radiator by its outside thread.The other end of adapter body has outside thread and gland nut (6) to match, its internal diameter with want the water pipe connecting external diameter to match, 40 °～45 ° inclined-planes are fallen in the end, when tightening gland nut, because the effect on two inclined-planes seal washer extrusion-deformation, is played seal action.

Description of drawings:

Fig. 1 is the pipe coupling figure of Chinese patent 87207919.

1---being adapter body 3---seal washer

2---gland nut 4---transition connecting tube

Fig. 2 is pipe coupling figure of the present utility model.

5---adapter body 7---seal washer

6---gland nut 8---pipe that connect

Claims

1. A water heating pipe joint, which is composed of a joint body, a sealing washer and a compression nut. It is characterized in that the water pipe is directly connected to the joint body and sealed by the sealing washer. The two ends of the joint body have external threads, and one end is connected to the required The connected radiators are connected, and the inner end surface of the other end is an inclined plane. A sealing washer is installed inside and matched with a compression nut. The pipe to be connected passes through the sealing washer and the compression nut, inserted into the main body of the joint, and is compressed and sealed by the compression nut. Gaskets to secure the tube and seal.

2. The pipe joint according to claim 1, wherein the slope at one end of the main body of the joint is 40°-45°, and the inner end surface of the compression nut is 40°-45°.