CN2630610Y

CN2630610Y - Connection pipe-component

Info

Publication number: CN2630610Y
Application number: CN 03247902
Authority: CN
Inventors: 庞浩辉
Original assignee: Individual
Current assignee: Pang Qiliang
Priority date: 2003-06-27
Filing date: 2003-06-27
Publication date: 2004-08-04
Anticipated expiration: 2013-06-27

Abstract

The utility model discloses a connecting pipe comprising a pipe joint, a pipe body, a seal ring and a loose tube flange. The end of the pipe body bulges to form a circle of convex ring. The loose tube flange is sleeved behind the convex ring. The inner wall of the pipe joint is opened with a step hole corresponding to the pipe body convex ring. The end face of the pipe joint is opened with a threaded hole corresponding to the connecting bolt of the loose flange. The front and the rear parts of the pipe body convex ring are respectively sleeved with seal rings and are inserted into the pipe joint. The connecting bolt of the loose tube flange is screwed into the end face of the pipe joint and is connected with the pipe joint by screwing. With the connecting mode, the end part of the pipe does not need any injuring processing and the wall thickness of the pipe can be greatly reduced to save a large amount of metal materials. The utility model is especially suitable for the connection of metal pipe with a diameter larger than Phi 50mm. The utility model has the advantages of a simple and firm connection and a good seal performance.

Description

Connection pipe fitting

Technical field

The utility model relates to the field of liquid, gas delivery tubular union, the metal pipe element that particularly is tightly connected.

Background technique

Traditional metal tube Placement, be connected firmly for reaching, closely, non-leakage purpose, the ways that adopt damage tubing end more, promptly open hinge worm tooth or open channels at pipe end, so that be connected with the internal thread or the groove of pipe joint, because worm tooth and groove have certain height or degree of depth requirement, the wall thickness of tubing just need be reserved as the surplus of machining screw tooth or groove when producing tubing, cause the whole wall thickness of tubing to be much higher than the size that real fluid pressure sets, unreasonable just because of linkage structure, cause the metallic material of tubing to be wasted in a large number, cost of production is higher.

The model utility content

The purpose of this utility model is to propose a kind ofly can wholely to reduce the metal pipe wall thickness, and is easy to connect, and is connected firmly, the connection pipe fitting of good airproof performance.

The technical solution of the utility model is: connection pipe fitting, include pipe joint, body, seal ring and lap joint flange, and the end protuberance of body forms a circle bulge loop, and the lap joint flange cutting ferrule is in the bulge loop back; The inwall of pipe joint has the shoulder hole corresponding with the body bulge loop, the end face of pipe joint has the screw corresponding with the lap joint flange connecting bolt, the front and back of body bulge loop put respectively in the seal ring insertion tube joint, and the connecting bolt of lap joint flange is screwed in the screw of pipe joint end face and tightens up connection.Further, lap joint flange is made up of two detachable semicircular ring, but have on the semicircular ring tighten up after the flange of crush seal circle.Tighten up when connecting, a bulge loop one side and seal ring, the pipe joint shoulder hole of body are closely withheld; Another side of bulge loop and seal ring, lap joint flange flange are closely withheld.

Such linkage structure, body itself need not carry out abrasive cutting, need only can be connected with pipe seal by diffusion formation bulge loop, the wall thickness of body can directly be set as required, need not reserve the cutting surplus, the metal consumptive material of body is greatly reduced, and cost of production greatly reduces.But also having pipe end compression and tensile strength height, connection is simple, firm, advantages such as good airproof performance.Especially being fit to the above larger caliber metal tube of φ 50mm connects.

Description of drawings

Fig. 1 is a linkage structure schematic representation of the present utility model;

Fig. 2 is a partition schematic representation of the present utility model.

Fig. 3 is the schematic representation of lap joint flange.

Embodiment

Referring to Fig. 1～Fig. 3, present embodiment mainly is made of stainless steel body 1, pipe joint 2, seal ring 3,5 and lap joint flange 4.The end of body 1 forms a circle bulge loop 11 through the diffusion protuberance; The inwall of pipe joint 2 have with seal ring 3 and body bulge loop 11, with the shoulder hole 21 corresponding to seal ring 5 and lap joint flange 4; Its port has and the corresponding inner bolt hole 22 of four bolts 43 on the lap joint flange 4.Lap joint flange 4 is to be made of two

semicircular ring

41 and 42, and matched card is enclosed within on body bulge loop 11 back and each

semicircular ring

41,42 and all is useful on the flange 44 that compresses seal ring 5.When being linked and packed, in the body 1 end insertion tube joint 2, bolt 43 on the lap joint flange 4 is screwed into the screw 22 of pipe joint 2, when screwing, bulge loop 11 is subjected to the pressure that links closely of the flange 44 on seal ring 5 and the lap joint flange 4, just in time compress the shoulder hole 21 of seal ring 3 and pipe joint 2, form first layer fastening-pressing type sealing configuration; Flange 44 in bulge loop 11 another sides and seal ring 5 and the lap joint flange 4 forms second layer fastening-pressing type sealing configuration; Like this, shoulder hole 21 and bulge loop 11, bulge loop and flange 44, pipe joint 2 and the lap joint flange 4 formation multi-layer sealing structure that is closely connected, thereby guarantee that pipe fitting connects, sealing reliably.

Certainly, only enumerate a kind of preferred implementation here, the technical program can be done other and be equal to or variation roughly the same, repeat no more here, but they all should belong to the protection domain of this patent.

Claims

1, connection pipe fitting includes pipe joint, body, seal ring and lap joint flange, it is characterized in that: the end protuberance of body forms a circle bulge loop, and the lap joint flange cutting ferrule is in the bulge loop back; The inwall of pipe joint has the shoulder hole corresponding with the body bulge loop, the end face of pipe joint has the screw corresponding with the lap joint flange connecting bolt, the front and back of body bulge loop put respectively in the seal ring insertion tube joint, and the connecting bolt of lap joint flange is screwed in the screw of pipe joint end face and tightens up connection.

2, connection pipe fitting according to claim 1 is characterized in that lap joint flange is made up of two detachable semicircular ring, but have on the semicircular ring tighten up after the flange of crush seal circle.

3, connection pipe fitting according to claim 1 is characterized in that a bulge loop one side of body and seal ring, pipe joint shoulder hole closely withhold; Another side of bulge loop and seal ring, lap joint flange flange are closely withheld.