CN2083676U

CN2083676U - Non thread wedge fastening pipe parts

Info

Publication number: CN2083676U
Application number: CN 90225940
Authority: CN
Inventors: 霍路伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-12-19
Filing date: 1990-12-19
Publication date: 1991-08-28

Abstract

The utility model relates to a non thread wedge fastening pipe part which comprises a pipe part main body, a conical wedge sleeve, a rubber sealing ring and a soft metal sealing ring. The conical wedge sleeve with an axial opening is sheathed on the end part of a steel pipe to be connected, and then the conical wedge sleeve is put into the pipe part main body form an end opening of the pipe part main body and pressed. The rubber sealing ring and the soft metal sealing ring are squeezed to achieve a sealing action. The inner side wall of the pipe part main body and the outer side wall of the matched conical wedge sleeve are both inclined conical surfaces with a small inclination angle, so the friction angle is enlarged, and the self-locking performance is strong. Due to the adoption of the non thread wedge fastening structure, special equipment and tools are not needed, and the conical wedge sleeve just needs to be fastened by pressure. The utility model has the advantages of convenient control by operating staff and easy installation and disassembly. The utility model can be popularized in rural districts and mountain areas.

Description

Non thread wedge fastening pipe parts

The utility model relates to a kind of threadless pipe fitting with wedge fastening type connecting structure.

At present, piping erection such as water supply, air feed generally have dual mode: a kind ofly be that welded flange connects; Another kind is that screw threads for fastening connects.But no matter be that welded flange connects, still screw threads for fastening connects, to the know-how condition, welding equipment, special car, strand screwing machine tool and special tool etc., absolute dependence is all arranged, construct in places such as natural condition difference and the unfavorable outlying rural area of technical specifications, mountain areas, sizable difficulty is all arranged, or can not construct because of problems such as instrument, equipment and technical specifications.

The purpose of this utility model provides a kind of pipe fitting of improved no thread joined structure, so that overcome two kinds of existing connecting structure pipe fittings to big shortcomings of dependence such as equipment, instrument, technology, thereby makes its application area big, is easy to promote.

For this reason, the utility model adopts following technological scheme: it comprises main pipe body (1), circular cone cover of wedge (2), rubber seal (3) and soft metal seal ring (4).Have annular boss (6) around above-mentioned main pipe body (1) all of the port, circular cone cover of wedge (2) madial wall is isodiametric cylindric, and outer side wall is the conical surface, its gradient is 1 °～3 °, on the jacket wall of circular cone cover of wedge (2) axially open is arranged, thereby make circular cone cover of wedge (2) have certain harmomegathus.On the above-mentioned soft metal seal ring (4) opening is also arranged, each fixed one tail handle (5) of these opening two ends perpendicular to anchor ring, two tail handles (5) are all in the same direction perpendicular to anchor ring.Rubber seal (3) is placed in the main pipe body (1), make the circumferential applying of itself and main pipe body (1), the position diameter minimum that main pipe body (1) madial wall and rubber seal (3) are fitted, port diameter maximum along madial wall, also be conical surface shape, inclination also is 1 °～3 °.Above-mentioned soft metal seal ring (4) also is placed in the main pipe body (1), is positioned at a side of steel pipe (7) inlet, and fits along circumferential and the contacted side of rubber seal (3) with main pipe body (1) madial wall.The circular cone cover of wedge (2) of above-mentioned opening vertically is enclosed within steel pipe (7) end that will connect with main pipe body (1), and puts in it and firmly be pressed into from main pipe body (1) port.

Main pipe body (1) can be that pipe collar, threeway, four-way, elbow can also be other main pipe body.

Because steel pipe (7) end and outer circular cone cover of wedge (2) small end thereof are put into and are firmly compressed into from main pipe body (1) port, make circular cone cover of wedge (2) the outer side wall conical surface and the relative movement of main pipe body (1) the madial wall conical surface.Because adopting inclination is the low-angle conical surface, makes its self-locking performance strong thereby increased friction angle.Like this, circular cone cover of wedge (2) and the steel pipe (7) in it are gradually by wedging.At this moment, circular cone cover of wedge (2) end face and steel pipe (7) extruding and their contacted soft metal seal rings (4) and rubber seal (3), thus reach seal action.The tail of soft metal seal ring (4) is then put into circular cone cover of wedge (2) opening to (5), and is close to main pipe body (1) madial wall, so also increase sealing effect.

Annular boss (6) around main pipe body (1) port is the acting surface of extruding force, plays the effect of stiffening rib again.

The utility model does not adopt worm structure to connect, so need not Special Equipment, instrument, only needs just to have finished installation process with pressure wedging circular cone cover of wedge (2).Operator be need not to possess know-how, be convenient to grasp, be easy to installation and removal.It is poor to be more suitable in natural condition, and promote in the unfavorable outlying rural area of technical specifications, mountain area etc.

Use this kind structure pipe fitting and install, but therefore thickness of steel pipe attenuate 25% can save material.

Structural representation when Fig. 1 is the utility model main pipe body (1) employing pipe collar.

Structural representation when Fig. 2 is the utility model main pipe body (1) employing threeway.

Fig. 3 is the pipe collar structural representation.

d ₁, d ₂Be respectively the large and small end diameter of the madial wall conical surface.

D ₁Be boss (6) external diameter; D ₂Be port outside diameter;

A ₁Be boss (6) thickness.

L is a pipe collar length.

H ₁Be the attenuate waist.

Table 1 is 6 embodiments of the corresponding pipe collar of steel pipe (6) of 6 kinds of specifications.

Conical surface gradient S ₁EE Error Excepted is ± 0.02 '.

Fig. 4 is the three-port structure schematic representation.

D ₃Be threeway port boss (6) external diameter.

D ₄Be the threeway port outside diameter.

d ₃, d ₄Be respectively the large and small end diameter of the madial wall conical surface.

B is a madial wall conical surface height.

L is a threeway length.

A ₂Be boss (6) thickness.

H ₂Be threeway attenuate waist.

Table 2 is 6 embodiments of threeway.

Conical surface gradient S ₂EE Error Excepted is ± 0.02 '

Fig. 5 is circular cone cover of wedge (a 2) structural representation.Fig. 6 is its plan view.

Fig. 7 is soft metal seal ring (a 4) structural representation.

φ ₁Be the cylindric madial wall diameter of circular cone cover of wedge (2).

φ ₂Be its outer side wall conical surface end diameter.

L is its height.

K ₁Be the axially open width on the circular cone cover of wedge (2).

Table 3 is (2) 6 embodiments of circular cone cover of wedge.

Conical surface gradient S ₃EE Error Excepted is ± 0.02 '

Table 4 is (3) 6 embodiments of rubber seal.

φ ₃, φ ₄, M represents external diameter, internal diameter and the thickness of rubber seal (6) respectively.

Table 5 is (4) 6 embodiments of lead-tight ring.

φ ₅Be lead-tight ring (4) diameter.Its opening length K ₂Be 10mm.

Claims

1, a kind of no threading wedge stationary pipe fitting, it is characterized in that, be by main pipe body (1), circular cone cover of wedge (2), rubber seal (3) and soft metal seal ring (4) are formed, have annular boss (6) around described main pipe body (1) port, described circular cone cover of wedge (2) madial wall is a cylindrical shape, outer side wall is the conical surface, conical surface inclination is 1 °～3 °, one opening is vertically arranged on its jacket wall, described soft metal seal ring (4) also has an opening, respectively there is a tail handle (5) perpendicular to anchor ring at these opening two ends, described rubber seal (3) is placed in the main pipe body (1), and circumferentially fit along madial wall with main pipe body (1), the madial wall diameter minimum that main pipe body (1) and rubber seal (3) are fitted, its port diameter maximum, also be conical surface shape, inclination also is 1 °～3 °, soft metal seal ring (4) is put into main pipe body (1), be positioned at a side of steel pipe (7) inlet, fit along circumferentially reaching rubber seal circle (3) side with main pipe body (1) madial wall, described circular cone cover of wedge (2) is enclosed within steel pipe (7) end that desire connects, puts into main pipe body (1) port then and compress into.

2, no threading wedge stationary pipe fitting according to claim 1, it is characterized in that, after described circular cone cover of wedge (2) is pressed in the main pipe body (1), its end face and extruding contacted with it soft metal seal ring (4) of the steel pipe (7) in it and rubber seal (3), and soft metal seal ring (4) tail is put into the axially open of circular cone cover of wedge (2) to (5).

3, no threading wedge stationary pipe fitting according to claim 1 is characterized in that, described main pipe body (1) is pipe collar, threeway, four-way, elbow or other main pipe body.