CN201028180Y

CN201028180Y - Double-layer encapsulated pipe connecting piece

Info

Publication number: CN201028180Y
Application number: CNU2007200511286U
Authority: CN
Inventors: 许光伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-27
Filing date: 2007-04-27
Publication date: 2008-02-27
Anticipated expiration: 2017-04-27

Abstract

The utility model relates to a pipe connector and comprises a main body of connector, a sealing ring, a gasket locking spring and a nut. The locking spring, the gasket and the sealing ring are sleeved on the pipe in sequence and the nut is threaded with the connector main body. The utility model also comprises a hard bushing lined in the pipe and the hard bushing is provided with ring-shaped wings surrounded around the notch of the pipe. The ring ring-shaped wings effectively protects the exposed aluminum position of the notch of an aluminum-plastic composite pipe, the hard bushing effectively avoids the danger that the junction of the aluminum-plastic composite pipe is very easy to be twisted or deformed and breaks out when bent upon the external force; hard bushing with a flexible plastic pipe has the advantage that the danger that the locking spring is pressed to deform and breaks out is avoided; the utility model, compared with the conventional single-side sealing, is more reliable and is suitable for connecting various pipes.

Description

Double-layer seal formula tube connection piece

Technical field

The utility model relates to a kind of tube connection piece.

Background technique

The tube connection piece of prior art, as Chinese patent 00209153.4, tubing is connected with joint, though without screw thread, be only applicable to serve as a contrast and mould being connected of Stainless Steel Tube and joint, inapplicable to aluminium-plastic composite pipe and soft plastic pipe, because the aluminium of aluminium-plastic composite pipe otch is exposed, very easily by sour corrosion in the water, and its joint is when being subjected to the external force stretch bending, very easily turned round bad or distortion and deviating from; To soft plastic pipe, easily by snap compress the distortion and deviate from.

Summary of the invention

The purpose of this utility model is at above-mentioned existing problems, and a kind of double-layer seal formula tube connection piece that all is suitable for that various tubing are connected is provided.

The purpose of this utility model is achieved in that and comprises adapter body, seal ring, packing ring snap and nut, and snap, packing ring, seal ring are set in tubing successively, and nut is connected with the joint screw thread of adapter body; Be lining in the hard lining of tubing in also comprising, the hard lining has the annular flap of going along with sb. to guard him the tubing otch; This annular flap is effectively protected the exposed position of the aluminium of aluminium-plastic composite pipe otch, and this hard lining is effectively stopped aluminium-plastics composite pipe joint and is in when being subjected to the external force stretch bending very easily by the danger of being turned round evil idea or distortion and deviating from; This hard lining prevents effectively that to soft plastic pipe soft plastic pipe from easily being compressed the danger of being out of shape and deviating from by snap.

The utility model, seal ring can be frustum formula sealing circle body, the frustum coupling on the joint of this frustum formula sealing circle body and adapter body.

The utility model, seal ring can be O RunddichtringO body, the cambered surface step coupling on the joint of this O RunddichtringO body and adapter body.

The utility model, can be on the hard lining suit one sealing gasket, the sealing pad contacts with the tubing cut sealing by annular flap.

The utility model, sealing gasket can be that the cross section is the flexible seal ring of O type.

The utility model, the hard lining can be the stainless steel lining cover, annular flap and stainless steel lining body are one through roll forming.

The utility model, owing to be lining in the hard lining of tubing in adopting, the hard lining has the annular flap of going along with sb. to guard him the tubing otch, have annular flap and effectively protect the exposed position of aluminium of aluminium-plastic composite pipe otch, the hard lining is effectively stopped aluminium-plastics composite pipe joint and is in when being subjected to the external force stretch bending very easily by the danger of being turned round evil idea or distortion and deviating from; The hard lining prevents effectively that to soft plastic pipe soft plastic pipe from easily being compressed the advantage of the danger of being out of shape and deviating from by snap; The utility model, more traditional one-sided sealing is more reliable; Be applicable to the connection of various tubing, mould Stainless Steel Tube, lining such as lining and mould copper pipe, aluminium-plastic composite pipe, PVC moulds pipe, PPR moulds pipe, soft plastic pipe connection.

Following embodiment is further described the utility model in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is embodiment's 1 an of the present utility model main TV structure schematic representation;

Fig. 2 be Fig. 1 embodiment 1 partly cut open structural representation;

Fig. 3 is embodiment's 2 an of the present utility model main TV structure schematic representation;

Fig. 4 be Fig. 3 embodiment 2 partly cut open structural representation.

Among the figure, 1, adapter body, 2, seal ring, 3, packing ring, 4, snap, 5, nut, 6, tubing, 7, the hard lining, 8, annular flap, 9, frustum formula sealing circle body, 10, frustum, 11, O RunddichtringO body, 12, the cambered surface step, 13, sealing gasket.

Embodiment

See figures.1.and.2, present embodiment 1 comprises adapter body 1, seal ring 2, packing ring 3 snaps 4 and nut 5, and snap 4, packing ring 3, seal ring 2 are set in tubing 6 successively, and nut 5 is connected with the joint screw thread of adapter body 1; Be lining in the hard lining 7 of tubing in also comprising, the hard lining has the annular flap 8 of going along with sb. to guard him the tubing otch; Sealing circle 2 is frustum formula sealing circle body 9, frustum 10 couplings on the joint of this frustum formula sealing circle body and adapter body; Suit one sealing gasket 13 on hard lining 7, the sealing pad contacts with the tubing cut sealing by annular flap 8, and sealing pad 13 is that the cross section is the flexible seal ring of O type; This hard lining 7 is the stainless steel lining, and annular flap 8 is one with stainless steel lining body through roll forming, and the adapter body of present embodiment 1 has three joints, i.e. three-way unions.

With reference to Fig. 3 and Fig. 4, present embodiment 2 comprises adapter body 1, seal ring 2, packing ring 3 snaps 4 and nut 5, and snap 4, packing ring 3, seal ring 2 are set in tubing 6 successively, and nut 5 is connected with the joint screw thread of adapter body 1; Be lining in the hard lining 7 of tubing in also comprising, the hard lining has the annular flap 8 of going along with sb. to guard him the tubing otch; Sealing circle 2 is an O RunddichtringO body 11, cambered surface step 12 couplings on the joint of this O RunddichtringO body and adapter body; Suit one sealing gasket 13 on hard lining 7, the sealing pad contacts with the tubing cut sealing by annular flap 8, and sealing pad 13 is that the cross section is the flexible seal ring of O type; This hard lining 7 is the stainless steel lining, and annular flap 8 is one with stainless steel lining body through roll forming, and the adapter body of present embodiment 2 has three joints, i.e. three-way unions.

Embodiment's 1 of the present utility model installation, see figures.1.and.2, snap 4, packing ring 3, seal ring 2 are set on the tubing 6 successively, withstand the joint inboard by tubing 6, snap 4, packing ring 3, seal ring 2 slide onto predeterminated position, again the joint screw thread of nut 5 with adapter body 1 screwed, finish installation.

Claims

1. double-layer seal formula tube connection piece, comprise adapter body (1), seal ring (2), packing ring (3) snap (4) and nut (5), snap (4), packing ring (3), seal ring (2) are set in tubing (6) successively, and nut (5) is connected with the joint screw thread of adapter body (1); It is characterized in that: be lining in the hard lining (7) of tubing in also comprising, described hard lining has the annular flap (8) of going along with sb. to guard him the tubing otch.

2. double-layer seal formula tube connection piece according to claim 1 is characterized in that: described seal ring (2) is frustum formula sealing circle body (9), frustum (10) coupling on the joint of this frustum formula sealing circle body and adapter body.

3. double-layer seal formula tube connection piece according to claim 1 is characterized in that: described seal ring (2) is an O RunddichtringO body (11), cambered surface step (12) coupling on the joint of this O RunddichtringO body and adapter body.

4. according to claim 2 or 3 described double-layer seal formula tube connection pieces, it is characterized in that: described hard lining (7) suit one sealing gasket (13), the sealing pad contacts with the tubing cut sealing by annular flap (8).

5. double-layer seal formula tube connection piece according to claim 4 is characterized in that: described sealing gasket (13) is that the cross section is the flexible seal ring of O type.

6. double-layer seal formula tube connection piece according to claim 4 is characterized in that: described hard lining (7) is the stainless steel lining, and described annular flap (8) is one with stainless steel lining body through roll forming.