CN2447604Y

CN2447604Y - Jointing means for thin-wall metal pipe

Info

Publication number: CN2447604Y
Application number: CN 00259214
Authority: CN
Inventors: 朱建设; 陈宣闽
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-15
Filing date: 2000-11-15
Publication date: 2001-09-12
Anticipated expiration: 2010-11-15

Abstract

The utility model mainly comprises an internal thread connected main body (1), a sealing ring (2), a cushion ring (3), and a hollow external screw plug (5), wherein, the internal thread connected main body (1) is a short pipe with a retracted neck which form a thread fit with the hollow external screw plug. The utility model is characterized in that a clamping spring ring (4) is additionally provided, and the clamping spring ring (4) is inlaid in a groove on the end part of a thin-walled metal pipe (6). The utility model has the advantages that the pipe end of the thin-walled metal pipe (6) can be connected without pipe end expansion, and the connection is convenient and firm.

Description

The thin-wall metal pipe connection

The utility model relates to the thin-wall metal pipe connection, relates in particular to the stainless steel thin-wall pipe connection.

Thin-wall stainless steel replaces galvanizing pipe, have advantages such as corrosion-resistant and beautiful shape, but because tube wall is thinner, can not resemble the galvanized pipe and connect with the hinge spiral shell, for this reason, Chinese patent ZL99225696X proposes a kind of connection set, this connection set: connect main body by interior spiral shell, packing ring, seal ring, outer spiral shell hollow plug is formed, it is the necking down short tube that interior spiral shell connects main body, when connecting thin walled tube, earlier with the hollow plug screw of outer spiral shell, packing ring and seal ring are enclosed within the thin walled tube outer wall in order, then by the mouth expander of special use with the enlarging of thin metallic tubd pipe end, spiral shell connects main body in packing into again, screw the hollow plug screw of outer spiral shell and get final product, its deficiency is: the thin metallic tubd pipe end palpus enlarging of connection, and the mouth expander bodily form is big, Heavy Weight uses or carries all sense inconvenience.

The purpose of this utility model is to avoid above-mentioned deficiency and a kind of thin-wall metal pipe connection is provided, and the thin metallic tubd pipe end needn't also can firmly connect in enlarging, and easy to connect, firmly.

The purpose of this utility model can reach by following technical solution: the utility model thin-wall metal pipe connection, spiral shell connects main body, seal ring, packing ring, hollow outer plug screw in mainly comprising, it is the necking down short tube that interior spiral shell connects main body, it and hollow outer plug screw screw-thread fit, and set up the jump ring ring, the jump ring ring is embedded in the groove of thin-wall metal tube end.

The utility model advantage, when being used for the connection of thin metallic tubd, the thin metallic tubd pipe end needn't also can connect in enlarging, and easy to connect, firm.

Below in conjunction with drawings and Examples the utility model is described in detail:

Accompanying drawing 1 is oblique the utility model structural representation in hollow outer plug screw (5) end face,

Accompanying drawing 2 is accompanying drawing 1 right half part decomposing schematic representations.

Accompanying drawing 3 is hollow outer plug screw (5) end face has the limit groove along internal diameter the utility model structural representations.

Accompanying drawing 4 is accompanying drawing 3 right half part decomposing schematic representations.

As Fig. 1, shown in 3, spiral shell connected main body 1 in the utility model thin-wall metal pipe connection comprised, seal ring 2, packing ring 3, hollow outer plug screw 5, it is middle necking down short tube that interior spiral shell connects main body 1, the internal diameter of interior spiral shell connection main body 1 necking down equates or is a bit larger tham the external diameter of thin metallic tubd 6 substantially, so that thin metallic tubd inserts in the necking down, it and hollow outer plug screw screw-thread fit, also has jump ring ring 4 in addition, jump ring ring 4 can be embedded in the groove of thin metallic tubd 6 ends; the groove of thin walled tube is realized by the existing pipe cutter of the transformation of the way; the cutter cuts cutterhead that is sharp edges changes the edge radian disk identical with the radian of groove into; seal ring 2; packing ring 3; jump ring ring 4; hollow outer plug screw 5 is as Fig. 2; shown in 4; install according to the order of sequence between interior spiral shell connection main body 1 and thin walled tube 5 ends, hollow outer plug screw 5 extrudes jump ring ring 4; packing ring 3; seal ring 2 can reach the connection purpose, it is inclined-plane 7 that hollow outer plug screw 5 leans on the end face of jump ring ring 4; from the oblique internal diameter of external diameter; when extruding jump ring ring 4, cause jump ring ring 4 to be stuck in firmly in the groove of thin metallic tubd 6 by jam-packed, thin metallic tubd 6 is firmly connected; Hollow outer plug screw 5 also can be driven circular groove 8 along internal diameter by the end face of jump ring 4, when extruding jump ring ring 4, can make jump ring ring 4 enter hollow outside in the circular groove 8 of plug screw 5 end faces, cause snap ring 4 to be stuck in securely in the groove of thin metal pipe 6, thin metallic tubd 6 is firmly connected, can the fine sealing effect that reaches when seal ring 2 is extruded.

Claims

1, a kind of thin-wall metal pipe connection, spiral shell connects main body (1), seal ring (2), packing ring (3), hollow outer plug screw (5) in mainly comprising, it is the necking down short tube that interior spiral shell connects main body (1), it and hollow outer plug screw (5) screw-thread fit, it is characterized in that: set up jump ring ring (4), jump ring ring (4) is embedded in the groove of thin metallic tubd (6) end.

2, by the described thin-wall metal pipe connection of claim 1, it is characterized in that: seal ring (2), packing ring (3), jump ring ring (4), hollow outer plug screw (5) install according to the order of sequence between interior spiral shell connecting body (1) and thin metallic tubd (6) end.

3, by claim 1 or 2 described thin-wall metal pipe connections, it is characterized in that: interior spiral shell connects the external diameter that main body (1) necking down internal diameter equates or be a bit larger tham thin metallic tubd (6) substantially, and hollow outer plug screw (5) leans on the end face of jump ring ring (4) to be inclined-plane (7) or along internal diameter limit groove (8) to be arranged.