CN2252928Y

CN2252928Y - Multi-screw large screw-pitch fast pipe joint

Info

Publication number: CN2252928Y
Application number: CN 96218735
Authority: CN
Inventors: 周智刚
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-12
Filing date: 1996-08-12
Publication date: 1997-04-23
Anticipated expiration: 2006-08-12

Abstract

The utility model relates to a multiple-head large screw-pitch fast pipe joint. The utility model has the conformation that the utility model comprises connecting nuts and two pipes which are connected together. A port of one pipe is provided with an outwards convex circular ring formed by flanged edges, and discontinuous multiple threads which are matched with the connecting nuts are made on edges of the circular ring. A port of the other pipe is provided with an outwards concave circular ring formed by the flanged edges, and the plane of the circular ring is a water sealing surface. A sealing gasket is arranged between the circular ring surfaces of the two pipes, and internal threads of the connecting nuts are replaced by a plurality of discontinuous declinate concave blocks which are punched and formed on a circumference surface. The utility model has the advantages of high speed and labor saving for connection, convenient installation and use, labor saving, material saving, higher cost, etc.

Description

The quick pipe coupling of bull large screw pitch

The utility model relates to pipe coupling, the quick pipe coupling of a kind of specifically bull large screw pitch.

Be extensive use of for example water supply line of various pipelines in industry and civil area, pipeline will connect with joint, and pipe joint uses and is threaded, existing pipe joint is generally machined threads, and processing tube screw thread on pipe requires tube wall thicker, both taken material, taken a lot of work again, put thread ring in thin pipe outside, if adopt welding, exist failure welding, cause phenomenons such as pipe break, if adopt the embedding cramping tight, also exist complex process, defectives such as loosening are pressed from both sides in embedding.

The purpose of this utility model is to improve existing pipe joint structure, a kind of new quick pipe coupling of bull large screw pitch is provided, directly form Sealing Surface and bayonet socket at pipe port flanging and restriking, utilize bayonet socket to replace screw thread, the attaching nut is made by stamping part, and punching press and the corresponding inclined-plane of bayonet socket screw thread projection on circumferential surface.

The purpose of this utility model is to realize like this

The quick pipe coupling of a kind of bull large screw pitch, it comprises attaching nut and two pipes that are joined together,

The port of a pipe has the evagination annulus of flanging forming, makes to have the interruption multiple thread that matches with the attaching nut on this annulus limit;

The port of another pipe has the evagination annulus of flanging forming, and this circular planes is a Sealing Surface;

Attaching nut's internal thread is for being interrupted multiple thread, and this nut has the upper-end surface of band endoporus, and this endoporus is slightly larger than the external diameter of pipe, attaching nut's minor diameter of internal thread be slightly larger than pipe and the external diameter of evagination annulus;

During installation, attaching nut's endoporus is inserted in from the external diameter of pipe, between the port toroidal surface of two pipes sealing gasket is housed.

Described attaching nut makes with the punching press of plastic metal material section bar, and its internal thread is replaced by the oblique projection of the interruption of some drawings on circumferential surface, and the position of this oblique projection is corresponding with the multiple thread helix.

The port of described pipe form the annulus Sealing Surface with mechanical flanging and restriking and at the edge of this annulus with punching press shaping formation and the corresponding multiple thread bayonet socket of the oblique projection of attaching nut's intermittent screw thread.

The utility model has following actively useful effect:

1, adopt and be interrupted discrete multiple thread connection, can realize that quick, labour-saving connects.

2, can adopt copper pipe flange stamping process to make tube end annulus and plastic metal material punching nut and screw thread thereof, technology is simple, saving of labor, material-saving.

3, sealing is reliable.

4, save material, cost is lower.

5, installation, easy to use.

6, applied widely, can be used for various pipelines, be particularly suitable for the upper and lower waterpipe of building and use.

Now in conjunction with the accompanying drawings with preferred embodiment:

Fig. 1 is embodiment's schematic representation that the utility model is applied to water curved pipe under the civilian toilet;

Fig. 2 is that the complete section of pipe coupling is cut view among Fig. 1;

Fig. 3 is the front view of pipe among Fig. 2 (1), shows tube end;

Fig. 4 is Fig. 3 side view;

Fig. 5 is the front view of pipe among Fig. 1 (3), shows tube end;

Fig. 6 is the elevational cross-sectional view of attaching nut among Fig. 2 (2);

Fig. 7 is the A-A parting view of Fig. 2.

Its user mode of the quick pipe coupling of bull large screw pitch of the present utility model is seen Fig. 1, and it comprises attaching nut 2 and the pipe 1 and 3 that is joined together is seen Fig. 2,

The port of pipe 1 has the evagination annulus 5 of flanging forming to see Fig. 3 Fig. 4, makes to have the interruption multiple thread 9 that matches with attaching nut 2 on these annulus 5 limits;

The port of pipe 3 has the evagination annulus 6 of flanging forming to see Fig. 5, and these annulus 6 planes are Sealing Surface;

Attaching nut 2 internal thread is for being interrupted multiple thread 8, and this nut 2 has the upper end of band endoporus 7 to meet personally Fig. 6 Fig. 7, and this endoporus is slightly larger than the external diameter of pipe 1, and attaching nut 2 minor diameter of internal thread is slightly larger than the external diameter of the evagination annulus 5,6 of pipe 1 and 3;

During installation, attaching nut 2 endoporus 7 is inserted in from the external diameter of pipe 3, between the port toroidal surface 5,6 of pipe 1 and 3 sealing gasket 4 is housed and sees Fig. 2.

Described attaching nut's 2 usefulness plastic metal material section bars for example copper pipe or steel plate punching press are made, and its internal thread is replaced by the oblique projection 8 of the interruption of some drawings on circumferential surface, and the position of this oblique projection 8 is corresponding with the multiple thread helix.

The port of described pipe 1 form annulus Sealing Surface 5 with mechanical flanging and restriking and at the edge of this annulus 5 with punching press shaping formation and the oblique projection 8 corresponding multiple thread bayonet sockets 9 of attaching nut's 2 intermittent screw threads.

During enforcement, at attaching nut's cylindrical effect annular knurl so that with hand loading, unloading nut.

During enforcement, described pipe 1,3 is full copper material.

During assembling, the skewed slot on attaching nut's 12 circumferential surfacies forms the inclined-plane with the aspectant bayonet socket of pipe 1 water shutoff and is connected, and has bull steep-pitch thread linkage function, tightens the attaching nut, and sealing gasket 4 is pushed, and forms the Sealing Surface sealing.

Claims

1 one kinds of quick pipe couplings of bull large screw pitch, pipe (1) and (3) that it comprises attaching nut (2) and is joined together is characterized in that:

The port of pipe (1) has the evagination annulus (5) of flanging forming, and this annulus (5) Bian Shangzuo has the interruption multiple thread (9) that matches with attaching nut (2);

The port of another pipe (3) has the evagination annulus (6) of flanging forming, and this annulus (6) plane is a Sealing Surface;

Attaching nut's (2) internal thread is for being interrupted multiple thread (8), this nut has the upper-end surface of band endoporus (7), this endoporus is slightly larger than the external diameter of pipe (1), and attaching nut's (2) minor diameter of internal thread is slightly larger than the evagination annulus (5) of pipe (1) and (3), the external diameter of (6);

During installation, attaching nut's (2) endoporus (7) is inserted in from the external diameter of pipe (3), between the port toroidal surface (5) of pipe (1) and (3), (6) sealing gasket (4) is housed

2, the quick pipe coupling of bull large screw pitch as claimed in claim 1, it is characterized in that: described attaching nut (2) makes with the punching press of plastic metal material section bar, its internal thread is replaced by the oblique projection (8) of the interruption of some drawings on circumferential surface, and the position of this oblique projection (8) is corresponding with the multiple thread helix.

3, the quick pipe coupling of bull large screw pitch as claimed in claim 1, it is characterized in that: the port of described pipe (1) forms annulus Sealing Surface (5) with mechanical flanging and restriking, and at the edge of this annulus (5) with punching press shaping formation and the corresponding multiple thread bayonet socket of the oblique projection of attaching nut (2) intermittent screw thread (8) (9).