CN203162403U

CN203162403U - Spiral pipe connector

Info

Publication number: CN203162403U
Application number: CN 201320045552
Authority: CN
Inventors: 李孟豪; 李豹; 凌岳松
Original assignee: NINGBO SHISHAN PIPES CO Ltd
Current assignee: NINGBO SHISHAN PIPES CO Ltd
Priority date: 2013-01-28
Filing date: 2013-01-28
Publication date: 2013-08-28
Anticipated expiration: 2023-01-28

Abstract

The utility model relates to the technical field of pipeline connectors, in particular to a spiral pipe connector. The spiral pipe connector comprises a spiral corrugated pipe, a flange sleeve is sleeved on the tail portion of the corrugated pipe, a pipe connector body is connected with the flange sleeve, the pipe wall of the tail end of the corrugated pipe is compressed to form a pipe orifice along the axial line, a lock head is sleeved on the inner side of the corrugated pipe, the front end of the lock head abuts against the pipe orifice, and the lock head and the pipe orifice are connected with the pipe connector body in a matched mode. The spiral pipe connector has the advantages that using is simple, and pipes can be cut according to actual demands of installation fields and can achieve field installation; sealing performance is good, screw thread sleeved connection is achieved, and high-strength sheet gaskets enable the pipeline to be stable and reliable; using is durable; the spiral metal corrugated pipes can reduce water resistance and prevent pipe walls from scaling.

Description

A kind of volute joint

Technical field

The utility model relates to the pipe coupling technical field, particularly a kind of volute joint.

Background technique

Metal bellows is mainly used in effects such as compensation pipes thermal distortion, damping, absorption pipeline sedimentation and deformation, is widely used in industries such as petrochemical industry, instrument, space flight, chemical industry, electric power, cement, metallurgy; Metal bellows is divided into spirality and two kinds of annulars again according to structure characteristic.

The spirality metal bellows is as the water pipe line link, have the current of assurance unobstructed, reduce resistance to water-flow, avoid advantage such as incrustation scale generation, and the structural feature of its similar " spring " can reduce water hammer effect, reduces the impaired possibility of pipe fitting.At present, the length specification of spirality metal bellows is in the preceding basic fixed of dispatching from the factory, need before installation, select the product of different size for use according to design size, the situation that runs into the length of pipeline deficiency then needs bellows is carried out elastic stretching satisfying installation requirements, so changed bellows structure, reduced the performance of pipeline.

Trace it to its cause, be that the two ends jointing of spirality metal bellows can not freely be dismantled, and again the seal that is difficult to guarantee pipeline is installed, therefore need carry out technical improvement to the structure of existing spirality metal corrugated pipe connector.

The model utility content

The purpose of this utility model is at the defective of prior art and deficiency, and a kind of compact structure, volute joint easy to use are provided.

For achieving the above object, the utility model is by the following technical solutions:

A kind of volute joint described in the utility model comprises spiral bellows, is arranged with the flange cover on the afterbody of bellows, and flange puts and is connected with pipe joint; The tail end tube wall of described bellows forms the mouth of pipe along axis compression, and the mouth of pipe inboard of bellows is arranged with tapered end, and the front end of tapered end contacts at the mouth of pipe, and the front end of tapered end penetrates pipe joint, and the front end of the mouth of pipe and pipe joint are connected.

Further, described tapered end rear end is provided with the backer, and the rear side of flange cover is provided with clasp, and the inboard of clasp and backer conflict.

Further, be provided with the pipe thread that cooperates with the bellows outer rim in the described tapered end, and the internal diameter of pipe thread is less than the external diameter of bellows.

Further, adopt between described flange cover and the pipe joint and be threaded.

Further, the inwall of described pipe joint is provided with shoulder block, is provided with seal ring between shoulder block and the mouth of pipe, and the mouth of pipe is conflicted with shoulder block by seal ring and is connected.

The utility model beneficial effect is: the utility model uses simple: tubing can be according to the cutting of erecting bed actual demand amount body, the on-the-spot installation; Good airproof performance: thread set connects, and the high strength gasket seal makes pipeline reliable and stable; Durable in use: the spiral metal bellows can reduce resistance to water-flow and prevent tube wall incrustation.

Description of drawings

Fig. 1 is whole cross-sectional view of the present utility model.

Among the figure:

1, bellows; 2, tapered end; 3, flange cover; 4, pipe joint;

5, seal ring; 11, the mouth of pipe; 21, backer; 22, pipe thread;

31, clasp; 41, shoulder block.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

A kind of volute joint described in the utility model, comprise spiral bellows 1, be arranged with flange cover 3 on the afterbody of bellows 1, be connected with pipe joint 4 on the flange cover 3, the tail end tube wall of bellows 1 forms the mouth of pipe 11 along the axis compression, and the mouth of pipe 11 inboards of bellows 1 are arranged with tapered end 2, and the front end of tapered end 2 contacts at the mouth of pipe 11, the front end of tapered end 2 penetrates pipe joint 4, and the front end of the mouth of pipe 11 and pipe joint 4 are connected.

Above-mentioned parts are the utility model agent structure.

Be provided with the pipe thread 22 that cooperates with bellows 1 outer rim in the above-mentioned tapered end 2, and the internal diameter of pipe thread 22 is less than the external diameter of bellows 1; Can the front and back rotation move when tapered end 2 is sheathed on the bellows 1, tapered end 2 moves the conflict mouth of pipe 11 to bellows 1 tail end, and then tapered end 2 bellowss 1 form thread lock.

Above-mentioned tapered end 2 rear ends are provided with backer 21, and the rear side of flange cover 3 is provided with clasp 31, and the inboard of clasp 31 and backer 21 conflict; The inwall of described pipe joint 4 is provided with shoulder block 41, is provided with seal ring 5 between shoulder block 41 and the mouth of pipe 11, and the mouth of pipe 11 is conflicted with shoulder block 41 by seal ring 5 and is connected; The internal diameter of the preferred shoulder block 41 of the utility model is less than the internal diameter of the mouth of pipe 11, and the external diameter of seal ring 5 is less than the inner ring diameter of the internal diameter of pipe joint 4 and seal ring 5 internal diameter less than the mouth of pipe 11.

Adopt between above-mentioned flange cover 3 and the pipe joint 4 and be threaded.

Working principle: tapered end 2 is spun on the tail end of bellows 1 and reserves the compacting surplus, the surplus of the tail end of bellows 1 is flattened the back form the mouth of pipe 11, this process can directly be finished in the erecting bed; The tail end of bellows 1 is located in the pipe joint 4, the mouth of pipe 11 forms with shoulder block 41 by seal ring 5 and docks, being threaded between flange cover 3 and the pipe joint 4 drives tapered end 2 when screwing and the mouth of pipe 11 makes above-mentioned butt joint closely seamless, and then bellows 1 and pipeline between the pipe joint 4 form stable and being connected of sealing.

The above only is preferred embodiments of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.

Claims

1. a volute joint comprises spiral bellows (1), is arranged with flange cover (3) on the afterbody of bellows (1), is connected with pipe joint (4) on the flange cover (3); It is characterized in that: the tail end tube wall of described bellows (1) forms the mouth of pipe (11) along the axis compression, the mouth of pipe (11) inboard of bellows (1) is arranged with tapered end (2), the front end of tapered end (2) contacts at the mouth of pipe (11), the front end of tapered end (2) penetrates pipe joint (4), and the front end of the mouth of pipe (11) and pipe joint (4) are connected.

2. volute joint according to claim 1, it is characterized in that: described tapered end (2) rear end is provided with backer (21), and the rear side of flange cover (3) is provided with clasp (31), and the inboard of clasp (31) and backer (21) conflict.

3. volute joint according to claim 1 is characterized in that: be provided with the pipe thread (22) that cooperates with bellows (1) outer rim in the described tapered end (2), and the internal diameter of pipe thread (22) is less than the external diameter of bellows (1).

4. volute joint according to claim 1 is characterized in that: adopt between described flange cover (3) and the pipe joint (4) to be threaded.

5. volute joint according to claim 1, it is characterized in that: the inwall of described pipe joint (4) is provided with shoulder block (41), be provided with seal ring (5) between shoulder block (41) and the mouth of pipe (11), the mouth of pipe (11) is conflicted with shoulder block (41) by seal ring (5) and is connected.