CN210716395U - Leak protection crimping pipe fitting - Google Patents

Abstract

The utility model discloses a leak protection crimping pipe fitting. This kind of leak protection crimping pipe fitting includes coupling, retainer plate, crimping ring, compresses tightly cover, connecting pipe, the retainer plate joint is in the coupling outside, the retainer plate top is provided with the annular groove, compress tightly cover bottom joint in the annular groove and with the coupling between form place the chamber, connecting pipe one end is inserted and is located and place the intracavity, the crimping ring includes integrative cassette and the holding ring that links to each other, the cassette joint is in the retainer plate outside, the holding ring cover is located and is compressed tightly the cover outside, crimping ring lateral wall evenly distributed has a plurality of minutes separating groove, it extends to the holding ring middle part from the cassette bottom to separate the groove. The utility model discloses a leak protection crimping pipe fitting will compress tightly the cover through the retainer plate and fix in the coupling outside, places the connecting pipe in compressing tightly the intracavity of placing between cover and the coupling, uses crimping tool to carry out the crimping to compressing tightly the cover, makes connecting pipe and coupling fixed connection.

Description

Leak protection crimping pipe fitting

Technical Field

The utility model relates to a tube coupling technical field, concretely relates to leak protection crimping pipe fitting.

Background

The crimping pipe fitting refers to an integral device formed by connecting two pipe fittings in a clamping and pressing mode, is widely used in various fields, and has the advantages of simple structure, high sealing pressure and capability of bearing certain axial force and bending moment of a pipeline, so that the crimping pipe fitting is often used for pipeline connection.

For example, patent application No. CN201510203221.3 discloses a clamp-press type leak-proof press-connecting pipe fitting, which comprises a hollow pipe fitting body with a pipe-connecting section at one end, a sealing ring, a positioning retaining ring clamped at the root of the pipe-connecting section, a pressing sleeve with one end inserted in the positioning retaining ring, and a leak-proof press-connecting retaining ring clamped at one end of the positioning retaining ring far from the root of the pipe-connecting section, wherein a guide groove for inserting a pipe is formed between the pressing sleeve and the pipe-connecting section, a sealing groove is arranged on the outer wall of the pipe-connecting section corresponding to the guide groove, the sealing ring is arranged in the sealing groove, the leak-proof press-connecting retaining ring comprises a plurality of claw blocks arranged close to one side of the positioning retaining ring and a plurality of plastic sheets arranged far from the positioning retaining ring, two adjacent claw blocks are connected by the same side of the plastic sheets, a, and a right-angle buckle positioned between the convex block and the root of the pipe connecting section is correspondingly arranged on each claw block. After the pipeline system is installed, the system can be conveniently detected, and the method is quick and accurate.

When the compression sleeve is compressed by using the compression tool, the compression tool simultaneously presses the plastic sheets of the anti-leakage compression check rings, at the moment, the plastic sheets serving as the connection points of the claw blocks are pressed to be broken, and the claw blocks fall off from the positioning check rings, so that a detector can judge whether the compression sleeve is compressed or not by observing whether the anti-leakage compression check rings on the positioning check rings fall off or not. However, the anti-leakage pressing ring of the patent is formed by connecting a plurality of claw blocks and a plurality of plastic sheets, the structure of the anti-leakage pressing ring is complicated, the manufacture is difficult, and when the plastic sheets are pressed to be broken, the parts of the bottoms of the plastic sheets, which are connected with the claw blocks, are not broken, so that the claw blocks cannot fall off.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a leak protection crimping pipe fitting.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a leak protection crimping pipe fitting, includes coupling, retainer plate, crimping ring, compresses tightly cover, connecting pipe, the retainer plate joint is in the coupling outside, the retainer plate top is provided with the annular groove, compress tightly cover bottom joint in the annular groove and with the coupling between form place the chamber, connecting pipe one end is inserted and is located and place the intracavity, the crimping ring includes integrative cassette and the holding ring that links to each other, the cassette joint is in the retainer plate outside, the holding ring cover is located and is compressed tightly the cover outside, crimping ring lateral wall evenly distributed has a plurality of separating grooves, separating groove extends to the holding ring middle part from the cassette bottom.

Furthermore, the pipe joint lateral wall is provided with ring groove, the retainer plate inner wall is provided with a plurality of fixture blocks with ring groove complex.

Furthermore, a plurality of rings of annular clamping teeth are arranged on the side wall of the pipe joint.

Furthermore, a sealing groove is formed in the side wall of the pipe joint, and a sealing ring is arranged in the sealing groove.

Furthermore, the bottom of the compression sleeve is provided with a necking part extending inwards, a plurality of protruding blocks are arranged in the annular groove, and the necking part is clamped below the protruding blocks.

Furthermore, the top of the pressing sleeve is provided with a flared part extending outwards.

Furthermore, the separating groove separates the clamping seat into a plurality of clamping jaws, and buckles are arranged in the clamping jaws.

Furthermore, the side wall of the fixing ring is provided with a protruding rib matched with the buckle.

Furthermore, a limiting block is arranged between the adjacent protruding ribs.

Furthermore, the positioning ring side wall is provided with a plurality of gaps, the gaps are arranged between adjacent separation grooves, and the bottom of the compression sleeve is provided with an observation port matched with the gaps.

It is right by the aforesaid the utility model discloses a description can know, compares with prior art, the utility model discloses a leak protection crimping pipe fitting will compress tightly the cover through the retainer plate and fix in the coupling outside, places the connecting pipe in compressing tightly the intracavity of placing between cover and the coupling, uses crimping tool to carry out the crimping to compressing tightly the cover, makes connecting pipe and coupling fixed connection, the utility model discloses a crimping ring comprises the cassette that an organic whole links to each other and holding ring, and the structure is simpler, makes more easily, when crimping tool carries out the crimping to compressing tightly the cover, breaks the holding ring, is separated a plurality of jack catchs of separating the groove and is come off from the retainer plate to judge whether compress tightly the cover and is compressed tightly, because separate the groove from the cassette bottom extend to the holding ring middle part, can ensure when the holding ring is broken that adjacent jack catch is not reconnected and come off from.

Drawings

Fig. 1 is a schematic cross-sectional view of an anti-leakage crimp pipe according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a fixing ring according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of a middle pressure joint ring according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a second embodiment of the pressing sleeve of the present invention.

Reference numerals: 1. a pipe joint; 11. an annular latch; 12. a seal ring; 2. a stationary ring; 21. an annular groove; 22. a clamping block; 23. a protruding block; 24. protruding ribs; 25. a limiting block; 3. a crimp ring; 31. A card holder; 311. a claw; 312. buckling; 32. a positioning ring; 321. a notch; 33. a separation tank; 4. A compression sleeve; 41. a necking part; 42. a flared part; 43. a viewing port; 5. and (4) connecting the pipes.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

referring to fig. 1-3, a leak protection crimping pipe fitting, includes coupling 1, retainer plate 2, crimping ring 3, compresses tightly cover 4, connecting pipe 5, retainer plate 2 joint is in the coupling 1 outside, retainer plate 2 top is provided with annular groove 21, compress tightly 4 bottoms of cover joint in annular groove 21 and with the coupling 1 between form place the chamber, connecting pipe 5 one end is inserted and is located and place the intracavity, crimping ring 3 includes integrative cassette 31 and the holding ring 32 that links to each other, cassette 31 joint is in the retainer plate 2 outside, the holding ring 32 cover is located and is compressed tightly the 4 outsides of cover, 3 lateral walls evenly distributed of crimping ring have a plurality of separation grooves 33, separation groove 33 extends to holding ring 32 middle part from cassette 31 bottom.

The side wall of the pipe joint 1 is provided with an annular clamping groove, the inner wall of the fixing ring 2 is provided with a plurality of clamping blocks 22 matched with the annular clamping groove, and the fixing ring 2 is clamped outside the pipe joint 1 through the matching of the clamping blocks 22 and the annular clamping groove; the side wall of the pipe joint 1 is provided with a plurality of rings of annular clamping teeth 11, and the annular clamping teeth 11 are arranged to enable the pipe joint 1 to be connected with the connecting pipe 5 more tightly, so that the friction force between the pipe joint 1 and the connecting pipe 5 is improved, and the connecting pipe 5 is ensured not to be loosened; a sealing groove is formed in the side wall of the pipe joint 1, a sealing ring 12 is arranged in the sealing groove, and the sealing ring 12 is arranged to improve the sealing property between the pipe joint 1 and the connecting pipe 5 and prevent liquid leakage; the bottom of the pressing sleeve 4 is provided with a necking part 41 which extends inwards, a plurality of protruding blocks 23 are arranged in the annular groove 21, the necking part 41 is clamped below the protruding blocks 23, and the pressing sleeve 4 is clamped in the annular groove 21 through the matching of the necking part 41 and the protruding blocks 23; the separation groove 33 separates the clamping seat 31 into a plurality of clamping jaws 311, a buckle 312 is arranged in each clamping jaw 311, a protruding rib 24 matched with the buckle 312 is arranged on the side wall of the fixed ring 2, and the clamping seat 31 is clamped outside the fixed ring 2 through the matching of the buckle 312 and the protruding rib 24; a limiting block 25 is arranged between the adjacent protruding ribs 24, and the limiting block 25 is arranged to limit the protruding ribs 24, so that the clamping seat 31 is conveniently clamped outside the fixing ring 2; the holding ring 32 lateral wall is provided with a plurality of breachs 321, breach 321 sets up between adjacent separating groove 33, it is provided with the viewing aperture 43 with breach 321 complex to compress tightly the cover 4 bottom, can conveniently look over through breach 321 and viewing aperture 43 whether connecting pipe 5 is pegged graft and is accomplished.

The leak-proof crimping pipe fitting fixes the pressing sleeve 4 outside the pipe joint 1 through the fixing ring 2, places the connecting pipe 5 in the placing cavity between the pressing sleeve 4 and the pipe joint 1, uses the crimping tool to crimp the pressing sleeve 4, so that the connecting pipe 5 is fixedly connected with the pipe joint 1, the crimping ring 3 of the utility model is composed of the clamping seat 31 and the positioning ring 32 which are connected into a whole, the structure is simpler, the manufacture is easier, when the crimping tool crimps the pressing sleeve 4, the positioning ring 32 is crimped off, the plurality of claws 311 separated by the separation groove 33 fall off from the fixed ring 2, the operator checks whether the pressing ring 3 falls off from the fixed ring 2 to determine whether the pressing sleeve 4 is pressed, because the separation groove 33 extends from the bottom of the clamping seat 31 to the middle of the positioning ring 32, when the retaining ring 32 is broken, it is ensured that the adjacent claws 311 are no longer connected and fall off the retaining ring 2.

The second embodiment is as follows:

referring to fig. 4, the present embodiment is different from the first embodiment in that: the top of the compressing sleeve 4 is provided with a flared part 42 extending outwards, and the flared part 42 is arranged to facilitate the insertion of the connecting pipe 5.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims (10)

1. A leak protection crimping pipe fitting which characterized in that: including coupling, retainer plate, crimping circle, pressing tightly cover, connecting pipe, the retainer plate joint is in the coupling outside, the retainer plate top is provided with the annular groove, press tightly cover bottom joint in the annular groove and with the coupling between form place the chamber, connecting pipe one end is inserted and is located and place the intracavity, the crimping circle includes integrative cassette and the holding ring that links to each other, the cassette joint is located the retainer plate outside, the holding ring cover is located and is pressed tightly the cover outside, crimping circle lateral wall evenly distributed has a plurality of separating grooves, separating groove extends to the holding ring middle part from the cassette bottom.

2. The leak resistant crimp fitting of claim 1, wherein: the pipe joint lateral wall is provided with ring groove, the retainer plate inner wall is provided with a plurality of and ring groove complex fixture block.

3. The leak resistant crimp fitting of claim 1, wherein: and a plurality of rings of annular clamping teeth are arranged on the side wall of the pipe joint.

4. The leak resistant crimp fitting of claim 1, wherein: the pipe joint is characterized in that a sealing groove is formed in the side wall of the pipe joint, and a sealing ring is arranged in the sealing groove.

5. The leak resistant crimp fitting of claim 1, wherein: the bottom of the compression sleeve is provided with a necking part extending inwards, a plurality of protruding blocks are arranged in the annular groove, and the necking part is clamped below the protruding blocks.

6. The leak resistant crimp fitting of claim 1, wherein: and the top of the compression sleeve is provided with a flared part extending outwards.

7. The leak resistant crimp fitting of claim 1, wherein: the separation groove separates the clamping seat into a plurality of clamping jaws, and buckles are arranged in the clamping jaws.

8. A leak-proof crimp fitting according to claim 7, wherein: the side wall of the fixing ring is provided with a protruding rib matched with the buckle.

9. A leak-proof crimp fitting according to claim 8, wherein: and a limiting block is arranged between the adjacent protruding ribs.

10. A leak-proof crimp fitting according to any one of claims 1 to 9, wherein: the side wall of the positioning ring is provided with a plurality of gaps, the gaps are arranged between adjacent separating grooves, and the bottom of the compression sleeve is provided with an observation port matched with the gaps.

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