CN2264832Y

CN2264832Y - Multi-functional pipe joint

Info

Publication number: CN2264832Y
Application number: CN 96233905
Authority: CN
Inventors: 潘必纯
Original assignee: CHUANLU PLASTICS Co Ltd
Current assignee: Chuanlu New Chemical Building Group Co., Ltd., Chengdu City
Priority date: 1996-10-18
Filing date: 1996-10-18
Publication date: 1997-10-15
Anticipated expiration: 2006-10-18

Abstract

The utility model relates to a multifunctional pipe joint, which belongs to the field of a pipe jointing part. The multifunctional pipe joint is composed of a joint body (1), a sealing ring (2), a snap ring (4), and a screw cap (5). The utility model is characterized in that the multifunctional pipe joint is also composed of a pressure ring (3). The snap ring is provided with an annular groove (11) and a protrusion (9), and the joint body is provided with a concave table (6). When the pipe is connected, the sealing ring (2) is embedded in the concave table. The screw cap rotates to be spirally connected with the joint body, and drives the snap ring to press the pressure ring to cause all sides of the sealing ring to be stressed reliably in sealing. The snap ring holds tightly a pipe, the annular groove increases press to the tube, so the tube has a favorable fixing effect. When a pipeline is pressed or temperature is changed, the pipe can flex properly in the joint body to prevent the pipe from deformation and leakage. The product of the utility model can be made up of plastics, metals, etc. The multifunctional pipe joint has the advantages of convenient installation, wide range of application, and strong practicability. The multifunctional pipe joint is used for port joint pipes of various pipe joints, and is suitable for a plastic water-feed pipeline system.

Description

The multifunctional pipe joint

The utility model relates to a kind of pipe coupling, particularly a kind of multi-functional fluid pipe coupling easy to use.

The mode and the kind of existing fluid conduit joint are a lot, general tube head screw thread and the joint screw thread mode that links that adopts, it is many to exist operation, instrument is heavy, tube head needs mantle fiber to arrange limited location (as in the corner), maintenance, repacking are inconvenient, and the compression seal reliability is low, the pipe line problems such as can not get compensation that expands, contracts when particularly temperature variation is big; Pipe coupling has in recent years had CN91209718.3 " general pipe joint " employing fittings body and the collar nut screw-thread fit of very big development as bulletin on April 29th, 1992, promoting the cross section by wedge ring top cover is that leg-of-mutton seal ring inserts the conical cavity sealed attachment pipeline that connects in the fittings body, need not tapping on pipeline when installing like this, directly pipeline is coupled together, but also exist sealing surface big, the top cover is held pipeline tightly comprehensively when pressurized of tube wall, pipeline after the installation is plastic piping particularly, at expanded by heating or catch a cold and easily cause the pipeline distortion when shrinking, and nut promotes the wedge ring top axial pressure of cover and little, problems such as seal ring discontinuity.

The purpose of this utility model be to provide a kind of seal reliable, pipeline can suitably stretch, easy for installation, widely applicable multifunctional pipe joint.

The purpose of this utility model is realized by following technological scheme:

A kind of multifunctional pipe joint, it is made up of fittings body, seal ring, snap ring, nut, it is characterized in that: the fittings body termination is provided with outside thread, and the termination internal diameter is axially arranged with concave station, is used to accept seal ring, snap ring is provided with male cone (strobilus masculinus), a part is provided with the internal thread that matches with the fittings body outside thread in the nut, and another part is provided with the inner conical surface that adapts with the snap ring male cone (strobilus masculinus), and seal ring is put into concave station, snap ring adapts with nut and cooperates, fittings body and nut scyewed joint.

The utility model multifunctional pipe joint also can be made up of the pressure ring that improves sealing effect, and pressure ring is the axial boss ring-type, and matches with fittings body termination concave station; Snap ring also is provided with the breach that guarantees that drive fit forms, and be provided with circular groove at the snap ring aperture surface, improve the radial pressure of joint to mounting pipe, snap ring conical surface bottom is provided with projection, projection can be a ring, also can be the sheet that is separated, as profile of tooth, arc etc., with identical shaped and be equally spaced to good; The cylinder that nut internal thread, inner conical surface surround, cone is coaxial and two bodies between form the ring platform and can be used for accepting, promote the snap ring projection; Fittings body can be the connecting port that connects various pipe fittings in the pipeline with pipe, as the threeway port, and four-way port, straight-through port, loose joint port, elbow port etc.; This joint can be made from a variety of materials, as metal, plastics, composite etc.

Using method of the present utility model is, at first that nut, snap ring, pressure ring, seal ring is corresponding successively, be inserted in from connecing nose end, again nose end is inserted fittings body appropriate depth (should leave extendable room), seal ring is embedded the fittings body concave station, pressure ring, snap ring, nut are drawn close to fittings body successively, nut be spun on the fittings body compress, otherwise when unclamping; This joint can be used for the connection of various material pipes, as long as the external diameter of pipe and joint internal diameter adapt just can.

The utility model compared with prior art has following advantage:

1, the pipeline of the utility model joint installation, seal ring is four side pressurized, stressed more even, good seal performance, but little with the pipe surface of contact, the snap ring internal diameter that is provided with circular groove is big to pipeline generation ringed line pressure ratio surface pressure, pipeline is fixing reliable, therefore to radially, the adaptability of axial expansion, contraction is strong, particularly joint and pipe to compress the surface of contact friction little, can prevent that axial expansion or contraction from causing pipeline distortion, have seal for pipe joints good, fixing reliable, can adapt to the flexible advantage of pipeline;

2, the structure of the utility model joint is applicable to various pipe fittings, as elbow, directly, loose joint, threeway, four-way, reducing conversion etc., applicability is strong;

3, the ring platform that forms in snap ring projection, pressure ring and the nut of the utility model joint, power reliable transmission when making fastening, each parts is stressed evenly, and rapid wear not can the secure fixation pipeline, is convenient to again unclamp safeguard or reset pipeline, and is practical;

4, the utility model joint need not during use to mouth of pipe mantle fiber, and without special tool, labor intensity is low, and installation rate is fast, and is easy and simple to handle; Can be used for unlike material, outer through connection suitable, ganoid pipe;

5, the utility model joint can be made of plastics, and is corrosion-resistant, and sanitation performance is good, is specially adapted in the plastics water supply pipeline system also available other made.

Accompanying drawing and description of drawings:

Fig. 1, a kind of multifunctional pipe joint structure schematic representation;

Fig. 2, a kind of multifunctional pipe joint fittings body structural representation;

Fig. 3, a kind of multifunctional pipe joint pressure ring structural representation;

Fig. 4, a kind of multifunctional pipe joint snap ring structural representation;

Fig. 5, a kind of multifunctional pipe joint snap ring plan view;

Fig. 6, a kind of multifunctional pipe collar nut structural representation;

Fig. 7, a kind of multifunctional pipe splice combinations schematic representation.

The utility model is described further in conjunction with the accompanying drawings with following embodiment:

Embodiment 1: a kind of multifunctional pipe joint as shown in Figure 1, it is made up of fittings body (1), seal ring (2), pressure ring (3), snap ring (4), nut (5); Fittings body (as shown in Figure 2) termination is provided with outside thread (16), and the termination internal diameter is axially arranged with annular concave platform (6); Seal ring (2) is watertight, the airtight circle of being made by elastic material; Pressure ring (as shown in Figure 3) is to be axial boss (7), the ring that internal diameter is consistent with the fittings body internal diameter, and boss (7) can adapt with concave station (6) and cooperates for well; Snap ring (shown in Fig. 4,5) is provided with male cone (strobilus masculinus) (8), also has the breach (10) that is out of shape when compressing to adapt to, and improves the holding tube ability; The interior part of nut (as shown in Figure 6) is provided with the internal thread (12) that matches with fittings body (1) screw thread (16), and another part is provided with the inner conical surface (13) that adapts with snap ring (4) male cone (strobilus masculinus) (8); Fittings body (1) internal diameter, pressure ring (3) internal diameter, nut cone (a 13) dimension internal diameter should be more bigger than being taken over (15) external diameter, snap ring (4) internal diameter seal ring (2) internal diameter than smaller by adapter (15) external diameter or be all mutually good; Fittings body, pressure ring, snap ring, nut are made by duroplasts; Combination is installed as shown in Figure 7, corresponding successively nut, snap ring, pressure ring, seal ring are inserted in taken over mouth, again the mouth of pipe is inserted appropriate depth in the fittings body (should leave flexible space), seal ring is embedded concave volume (6) and draws close pressure ring, snap ring, nut successively, nut and fittings body scyewed joint, seal ring pressure ring, snap ring, pipeline and fittings body are compressed, otherwise but with regard to releasable joint.

Embodiment 2: a kind of multifunctional pipe joint, its snap ring (4) is as Fig. 4, shown in 5, on snap ring (4) internal diameter, also be provided with circular groove (11), to strengthen the radial pressure of snap ring to pipeline, can the secure fixation pipeline, can reduce surface of contact frictional force again, snap ring (4) male cone (strobilus masculinus) (8) the awl end, be provided with projection (9), be trapezoidal dentation, be uniformly distributed in snap ring awl bottom plane, coaxial screw thread (12) in the nut (as shown in Figure 6), the cylinder that inner conical surface (13) surrounds, form ring platform (14) between the cone and can be used for accepting snap ring projection (9), can be used for the push card annulate shaft when fastening to moving, prevent because of caliber, the conical surface, seal ring, pressure ring, processing reasons such as snap ring cause compresses problems such as not enough, and other is identical with embodiment 1.

Embodiment 3: a kind of multifunctional pipe joint, it is made up of fittings body, seal ring, snap ring, nut, snap ring corresponding joints body one end is provided with axial boss and the axial concave station of fittings body adapts, set projection is a ring at the bottom of the snap ring male cone (strobilus masculinus), do not have pressure ring, directly the snap ring boss is drawn close seal ring during use, screw nut, seal, compress pipeline, other is identical with embodiment 1.

Claims

1, a kind of multifunctional pipe joint, it is by fittings body (1), seal ring (2), snap ring (4), nut (5) is formed, it is characterized in that: fittings body (1) termination is provided with outside thread (16), the termination internal diameter is axially arranged with concave station (6), snap ring (4) is provided with male cone (strobilus masculinus) (8), and have a breach (10), the interior part of nut (5) is provided with the internal thread (12) that matches with the fittings body outside thread, another part is provided with the inner conical surface (13) that adapts with snap ring (4) male cone (strobilus masculinus) (8), seal ring (2) is put into concave station (6), snap ring (4) male cone (strobilus masculinus) (8) and nut inner conical surface (13) corresponding matching, fittings body and nut scyewed joint.

2, pipe coupling according to claim 1 is characterized in that: it also is made up of pressure ring (3), and pressure ring is the axial boss ring, and boss (7) matches with concave station (6), is installed between seal ring (2) and the snap ring (4).

3, pipe coupling according to claim 1 is characterized in that: the snap ring internal diameter is provided with circular groove (11).

4, pipe coupling according to claim 1 is characterized in that: snap ring male cone (strobilus masculinus) (8) the awl end, be provided with projection (9).

5, according to claim 1,2,3,4 described pipe couplings, it is characterized in that: the set projection of snap ring (4) (9) is for trapezoidal dentation, evenly is arranged at the bottom of the snap ring outer cone in the same plane, and the ring platform (14) that adapts with snap ring projection (9) is arranged in the nut.

6, pipe coupling according to claim 5 is characterized in that: fittings body (1), pressure ring (3), snap ring (4), nut (5) are made with duroplasts, and seal ring (2) is made by rubber.