CN220060897U

CN220060897U - Buckling pipe fitting

Info

Publication number: CN220060897U
Application number: CN202321482557.4U
Authority: CN
Inventors: 易柯; 毛左全
Original assignee: Hunan Senge Precision Machinery Co ltd
Current assignee: Hunan Senge Precision Machinery Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2023-11-21
Anticipated expiration: 2033-06-12

Abstract

The utility model discloses a buckling pipe fitting, which relates to the technical field of pipeline installation and comprises an inner pipe, an outer pipe and a pipe sleeve which are sequentially sleeved from inside to outside, wherein a first positioning piece is arranged between the inner pipe and the pipe sleeve, and a second positioning piece is arranged between the outer pipe and the pipe sleeve; the inner wall of the outer tube is provided with a plurality of square bulges, the peripheral side face of the second positioning piece of the inner tube is provided with a plurality of trapezoidal grooves, each groove is fixedly connected with a pointed cone, and each pointed cone, each groove and each bulge are in one-to-one correspondence. This withhold formula pipe fitting, before withholding, the second setting element is fixed the pipe box with the outer tube and is prevented the outer tube for inner tube horizontal migration together and influence withhold the effect, withhold the in-process, with inner tube and pipe box together fixed through first setting element, the relative inner tube horizontal migration of pipe box when preventing to withhold, when outer tube withhold with the inner tube together, in protruding indentation that corresponds, the pointed cone makes protruding bifurcation in order to fill the recess, makes outer tube and inner tube hug closely together.

Description

Buckling pipe fitting

Technical Field

The utility model relates to the technical field of pipeline installation, in particular to a buckling pipe fitting.

Background

The buckling pipe fitting is used as a connecting part and consists of a core pipe and an outer sleeve. When in connection, the end part of the connected pipeline is inserted into the gap between the core pipe and the outer sleeve and is clamped by implementing buckling pressure, and the end parts of the core pipe and the outer sleeve are fixedly connected together.

The Chinese patent with the publication number of CN201212599Y and the name of buckling pipe fitting comprises a cylindrical connecting piece and a cylindrical pipe sleeve which are connected with the pipe fitting, wherein the pipe sleeve is sleeved on the connecting piece and a gap is reserved between the pipe sleeve and the connecting piece.

One of the above-mentioned patents is practical and convenient, but has the disadvantage that if the above-mentioned patent is not buckled in place, the connection is disabled, and if the above-mentioned patent is buckled too tightly, the pipe body is damaged.

Disclosure of Invention

The present utility model is directed to a buckling pipe fitting, which solves the above-mentioned drawbacks of the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions: the buckling pipe fitting comprises an inner pipe, an outer pipe and a pipe sleeve which are sequentially sleeved from inside to outside, wherein a first locating piece is arranged between the inner pipe and the pipe sleeve, a second locating piece is arranged between the outer pipe and the pipe sleeve, a plurality of square protrusions are arranged on the inner wall of the outer pipe, a plurality of trapezoidal grooves are formed in the peripheral side face of the inner pipe, pointed cones are fixedly connected in the grooves, the pointed cones, the grooves and the protrusions are in one-to-one correspondence, when the outer pipe and the inner pipe are buckled together, the protrusions are pressed into the corresponding grooves, and the pointed cones enable the protrusions to be forked to fill the grooves.

Further, the first positioning piece comprises a ring groove and a convex ring, the ring groove is formed in the circumferential side face of the inner tube, the convex ring is arranged at one end of the pipe sleeve, and the convex ring is clamped in the ring groove.

Further, a sealing ring is arranged between one side of the convex ring and the annular groove.

Further, the second locating piece comprises a buckle and a clamping groove, the buckle is arranged on the pipe sleeve, the clamping groove is formed in one end of the outer pipe, and the buckle is connected with the clamping groove in a clamping mode.

Further, the inner walls of the inner tube and the outer tube are coated with an anti-corrosive coating.

Compared with the prior art, the utility model has the beneficial effects that: this withhold formula pipe fitting, before withholding, the second setting element is together pipe box and outer tube pre-fixed, prevent that the outer tube from influencing the withholding effect for inner tube horizontal migration, withhold the in-process, fix inner tube and pipe box together through first setting element, the relative inner tube horizontal migration of pipe box influences the withholding effect when preventing to withhold, when outer tube and inner tube withhold together, the arch is impressed in the recess that corresponds, the pointed cone makes protruding bifurcation in order to fill the recess, both solved withhold the problem that the condition makes the connection inefficacy not in place, can prevent again to withhold the overtightening damage pipe fitting body.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a front cross-sectional view of a crimping provided by an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a crimped device according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of an overall structure according to an embodiment of the present utility model;

fig. 4 is a schematic view of an inner tube structure according to an embodiment of the present utility model.

Reference numerals illustrate: 1. an inner tube; 2. an outer tube; 3. a pipe sleeve; 4. a ring groove; 5. a convex ring; 6. a buckle; 7. a clamping groove; 8. a protrusion; 9. a groove; 10. and (5) a pointed cone.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

Referring to fig. 1-4, the embodiment of the present utility model provides a technical solution: this withhold formula pipe fitting, including by interior to outside inner tube 1 that the looks is overlapped in proper order, outer tube 2 and pipe box 3, during withhold, pipe box 3 protects outer tube 2, prevent to withhold and excessively press damaging outer tube 2, make outer tube 2 warp, be equipped with first locating part between inner tube 1 and the pipe box 3, first locating part prevents that pipe box 3 from moving relatively inner tube 1 horizontal migration influences the effect of withholding, be equipped with the second locating part between outer tube 2 and the pipe box 3, the second locating part prevents that outer tube 2 from moving relatively inner tube 1 horizontal migration influences the effect of withholding, outer tube 2 inner wall is equipped with a plurality of square protruding 8, inner tube 1 week side is equipped with a plurality of trapezoidal recess 9, all fixedly connected with pointed cone 10 in each recess 9, each pointed cone 10, recess 9 and protruding 8 one-to-one, when outer tube 2 withhold together with inner tube 1, protruding 8 is impressed in corresponding recess 9, pointed cone 10 makes protruding 8 bifurcation so as to fill recess 9, make outer tube 2 and inner tube 1 hug closely together, the leakproofness between outer tube 2 and inner tube 1 has been improved, prevent to withhold and excessively press damaging the pipe fitting body.

As the preferable technical scheme, the first locating piece comprises a ring groove 4 and a convex ring 5, the ring groove 4 is formed in the peripheral side face of the inner tube 1, the convex ring 5 is arranged at one end of the tube sleeve 3, the convex ring 5 is clamped in the ring groove 4, the locating effect is achieved, and the effect of the buckling effect is prevented from being influenced by the horizontal movement of the tube sleeve 3 relative to the inner tube 1 during buckling.

As the preferable technical scheme, a sealing ring is arranged between one side of the convex ring 5 and the annular groove 4, so that the tightness between the pipe sleeve 3 and the inner pipe 1 is improved, and pollution caused by flowing of polluted liquid into the inner pipe 1 is prevented.

As the preferred technical scheme, the second locating piece includes buckle 6 and draw-in groove 7, and buckle 6 establishes on pipe box 3, and the one end at outer tube 2 is seted up to draw-in groove 7, buckle 6 and draw-in groove 7 joint play the pre-fixation effect before withholding, prevent outer tube 2 for inner tube 1 horizontal migration, make protruding 8 and recess 9 be in on the position of one-to-one, improve and withhold the effect.

As a preferred solution, the inner walls of the inner tube 1 and the outer tube 2 are coated with an anti-corrosive coating in order to form an overall effective anti-corrosive coating for the surfaces of the pipe elements in contact with the fluid or gas.

Working principle: this withhold formula pipe fitting, before withholding, the draw-in groove 7 that the horizontal migration outer tube 2 made on the outer tube 2 and the buckle 6 joint on the pipe box 3, prevent that outer tube 2 from influencing the withholding effect for inner tube 1 horizontal migration, withhold the in-process, through bulge loop 5 joint in annular 4, make inner tube 1 and pipe box 3 together, prevent that pipe box 3 from influencing the withholding effect for inner tube 1 horizontal migration, be equipped with a sealing washer between outer tube 2 inner wall and inner tube 1 outer wall, increase the leakproofness, when outer tube 2 withheld together with inner tube 1, bulge 8 impress in corresponding recess 9, pointed cone 10 makes bulge 8 bifurcation so as to fill recess 9, make outer tube 2 and inner tube 1 hug closely together, both solved the withhold the problem that the condition was not in place makes the connection inefficacy, can prevent to withhold too tightly again and damage the pipe fitting body, double sealing's effect has been played.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a withhold formula pipe fitting which characterized in that includes

The inner pipe (1), the outer pipe (2) and the pipe sleeve (3) are sleeved in sequence from inside to outside, a first positioning piece is arranged between the inner pipe (1) and the pipe sleeve (3), and a second positioning piece is arranged between the outer pipe (2) and the pipe sleeve (3);

the inner wall of the outer tube (2) is provided with a plurality of square bulges (8), the peripheral side surface of the inner tube (1) is provided with a plurality of trapezoidal grooves (9), each groove (9) is fixedly connected with a pointed cone (10), and each pointed cone (10), each groove (9) and each bulge (8) are in one-to-one correspondence;

when the outer tube (2) and the inner tube (1) are buckled together, the protrusions (8) are pressed into the corresponding grooves (9), and the sharp cones (10) enable the protrusions (8) to be branched to fill the grooves (9).

2. The buckling pipe fitting according to claim 1, wherein the first positioning piece comprises a ring groove (4) and a convex ring (5), the ring groove (4) is formed in the circumferential side surface of the inner pipe (1), the convex ring (5) is arranged at one end of the pipe sleeve (3), and the convex ring (5) is clamped in the ring groove (4).

3. A crimping pipe element according to claim 2, characterized in that a sealing ring is arranged between one side of the collar (5) and the ring groove (4).

4. The buckling pipe fitting according to claim 1, wherein the second positioning piece comprises a buckle (6) and a clamping groove (7), the buckle (6) is arranged on the pipe sleeve (3), the clamping groove (7) is formed in one end of the outer pipe (2), and the buckle (6) is clamped with the clamping groove (7).

5. A swaged tube according to claim 1, wherein the inner walls of the inner tube (1) and the outer tube (2) are coated with an anti-corrosive coating.