CN211779563U

CN211779563U - Quick-connecting pipe fitting

Info

Publication number: CN211779563U
Application number: CN202020402345.0U
Authority: CN
Inventors: 李家德; 毛福财
Original assignee: Taizhou Aidi Xishengda Tube Co ltd
Current assignee: Taizhou Aidi Xishengda Tube Co ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-10-27
Anticipated expiration: 2030-03-26

Abstract

The utility model provides a connect pipe fitting soon belongs to pipe connection technical field. It has solved the current poor scheduling problem of quick coupling pipe fitting leakproofness. This connect pipe fitting soon includes the jump ring, the sleeve, neck bush and body, neck bush cavity passes the sleeve in proper order, the jump ring is in order to insert the body, the body is equipped with step one in the interior end department of neck bush, the body has the step two that supports in the jump ring and the body inner wall has the conical surface that lets lie in the jack catch, the tip of body is the riveting portion of inside riveting, it has the spacing lid that is the tube-shape to spacing between riveting portion and the sleeve, the sleeve inserts in the spacing lid, telescopic outer end stretches out spacing lid and telescopic inner and contradicts in the jack catch setting, the outer end of spacing lid has radial interior protruding and is used for blockking the fender shoulder of convex shoulder, the inner of neck bush is equipped with spacing in the step sealed structure in the body inner wall in. The utility model has the advantages of good sealing performance, compact structure and low manufacturing cost.

Description

Quick-connecting pipe fitting

Technical Field

The utility model belongs to the technical field of the pipe connection, a connect pipe fitting soon is related to.

Background

The quick-connection pipe fitting can realize quick connection between the pipe fitting and the pipe fitting, and is convenient to disassemble. For example, the Chinese patent literature discloses a quick connecting pipeline of a water divider [201520262295. X; authorization notice number: CN204554189U ], which comprises a pipeline body and at least one quick joint arranged on the pipeline body, wherein the quick joint comprises a joint body, a locking cap, a sleeve, a snap spring and an inner bushing, the locking cap locks the sleeve in the joint body, the snap spring is arranged between the joint body and the sleeve, and the inner bushing is clamped in the joint body, a connecting cavity for connecting an external pipe is formed between the outer wall of the inner bushing and the inner wall of the sleeve, the snap spring is arranged on a snap spring seat, and a sealing ring is embedded in the inner side of the snap spring seat by the joint body.

When foretell water knockout drum connects pipeline to use soon, the pipe fitting breaks away the jack catch of jump ring in order to insert between endotheca and the sleeve, the sealing washer seals up and plays sealed effect in the pipe fitting outer wall, the jack catch of jump ring locks in the pipe fitting outer wall because of self elasticity, the pipe fitting can not break away from in order to reach the effect of connecing soon, when dismantling, press down the jack catch that the sleeve made the sleeve inner back open the jump ring, the pipe fitting can break away from smoothly, but in the use, the pipe fitting all need break away the jack catch of jump ring and just can insert between endotheca and the sleeve, the jack catch can cause the outer wall of pipe fitting to draw the damage, lead to sealed face disappearance, make the sealing washer sealed in the pipe fitting outer wall can's sealed effect of unable.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a leakproofness well, compact structure and can reduce manufacturing cost's quick-connect pipe fitting.

The purpose of the utility model can be realized by the following technical proposal: a quick-connecting pipe fitting comprises a clamp spring, a sleeve, an inner bushing and a tubular body, wherein the clamp spring is provided with a claw inclined towards the inner end of the body, the inner end of the sleeve is provided with a convex shoulder protruding radially, the outer wall of the convex shoulder is a conical surface with the outer diameter gradually reduced towards the inner end side of the sleeve, the inner bushing is hollow and sequentially penetrates through the sleeve and the clamp spring to be inserted into the body, the body is provided with a first step at the inner end of the inner bushing, the quick-connecting pipe fitting is characterized in that the body is provided with a second step supported on the clamp spring, the inner wall of the body is provided with a conical surface capable of yielding to the claw, the end part of the body is a riveting part riveted inwards, a cylindrical abutting cover is limited between the riveting part and the sleeve, the sleeve is inserted into the abutting cover, the outer end of the sleeve extends out of the limiting cover, the inner end of the sleeve is arranged at the claw, the outer end of the, the inner end of the inner lining is provided with a sealing structure which is limited by the step and sealed on the inner wall of the body.

In the above quick-connecting pipe fitting, the sealing structure includes a radially outward protruding collar at the inner end of the inner bushing, the first step is supported at the bottom of the collar, and the first sealing ring sealed on the inner wall of the body is embedded in the collar.

In the above-mentioned quick-connection pipe fitting, the sealing structure further comprises a sealing gasket which is annular and is abutted to the top surface of the convex ring, and the outer wall of the sealing gasket is sealed on the inner wall of the body after the sealing gasket is abutted to the inner end of the contact pipe.

As another situation, in the above quick-connect pipe fitting, the sealing structure includes an inner liner, the outer wall of which has a radially protruding convex ring, the inner liner is provided with an upper sealing washer and a lower sealing washer which are annular, the upper sealing washer abuts against the top surface of the convex ring, when the adapter tube abuts against the upper sealing washer, the outer wall of the upper sealing washer is sealed on the inner wall of the body, the bottom surface of the lower sealing washer exceeds the inner bottom surface of the inner liner, and the lower sealing washer is located between the convex ring and the first step.

In the quick-connecting pipe fitting, a second sealing ring close to the sealing gasket is embedded in the outer wall of the inner lining, and the outer edge of the second sealing ring protrudes out of the outer wall of the inner lining.

In the quick-connecting pipe fitting, a third sealing ring is embedded in the middle of the outer wall of the section of the inner lining surrounded by the sleeve, and the outer edge of the third sealing ring protrudes out of the outer wall of the inner lining.

In the quick-connecting pipe fitting, the retaining shoulder is provided with an extension part which extends axially and is used for the riveting part to abut against.

In the quick connecting pipe fitting, the body is provided with a third step supported on the limiting cover, and the height of the third step is larger than the thickness of the clamp spring.

In the above quick-connecting pipe fitting, the outer wall of the outer end of the inner bushing has a guide surface.

Compared with the prior art, this connect pipe fitting soon's compact structure, low in manufacturing cost, the leak source is few moreover, even the jack catch causes the takeover outer wall to draw the damage, seal structure seals in the body inner wall all the time in order to avoid leaking, and the leakproofness is good, has reduced product quality risk, long service life.

Drawings

Fig. 1 is a structural sectional view of the quick connector in embodiment 1.

Fig. 2 is a structural sectional view of the quick connecting pipe fitting in embodiment 2.

In the figure, 1, a clamp spring; 2. a sleeve; 21. a shoulder is formed; 3. an inner liner; 31. a convex ring; 32. a convex ring; 33. a guide surface; 4. a body; 41. a step I; 42. a step II; 43. a conical surface; 44. riveting and pressing part; 45. a step III; 5. a limiting cover; 51. a shoulder block; 511. an extension part; 6. a first sealing ring; 7. a gasket; 8. an upper sealing washer; 9. a lower sealing gasket; 10. a second sealing ring; 11. and a third sealing ring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example 1

As shown in figure 1, the quick-connection pipe fitting comprises a clamp spring 1, a sleeve 2, an inner bushing 3 and a tubular body 4, wherein the clamp spring 1 is provided with a claw inclined towards the inner end of the body 4, the inner end of the sleeve 2 is provided with a convex shoulder 21 protruding radially, the outer wall of the convex shoulder 21 is a conical surface gradually reducing towards the inner end side of the sleeve 2, the inner bushing 3 is hollow and sequentially penetrates through the sleeve 2 and the clamp spring 1 to be inserted into the body 4, the inner end of the body 4 of the inner bushing 3 is provided with a first step 41, the body 4 is provided with a second step 42 supported on the clamp spring 1, the inner wall of the body 4 is provided with a conical surface 43 yielding to the claw, the end of the body 4 is a riveting part 44 riveting inwards, a cylindrical limiting cover 5 is limited between the riveting part 44 and the sleeve 2, the sleeve 2 is inserted into the limiting cover 5, the outer end of the sleeve 2 extends out of the limiting cover 5, the inner end of the sleeve 2 is abutted against the claw, the, the inner end of the inner bushing 3 is provided with a sealing structure which is limited on the first step 41 and sealed on the inner wall of the body 4.

The quick-connecting pipe fitting omits a clamp spring seat for supporting the clamp spring 1, and the inner wall of the body 4 does not need to reserve an installation position for placing a sealing ring, so that the end part of the body 4 can be shortened, the structure is compact, the body 4 saves materials, the clamp spring seat is omitted, and the manufacturing cost is reduced; this seal structure of joint pipe spare soon sets up in the inner of neck bush 3, even the jack catch causes the takeover outer wall to draw the damage, the seal structure that lies in the takeover below is not influenced, and seal structure seals all the time in 4 inner walls of body in order to avoid leaking, has reduced the product quality risk, and riveting portion 44 is the integral type structure with body 4 moreover, more with the threaded connection of locking cap, has reduced the leak source, has improved the leakproofness.

In further detail, the sealing structure in this embodiment includes a protruding ring 31 radially protruding outward at the inner end of the inner bushing 3, the first step 41 is supported at the bottom of the protruding ring 31, the first sealing ring 6 sealed on the inner wall of the body 4 is embedded in the protruding ring 31, the first step 41 supports the protruding ring 31 to axially limit the inner bushing 3, and the first sealing ring 6 ensures the sealing performance between the inner bushing 3 and the body 4. The sealing structure also comprises a sealing gasket 7 which is arranged in the inner lining 3 in a penetrating way and is annular and abutted against the top surface of the convex ring 31, and when the inner end of the contact pipe is abutted against the sealing gasket 7, the outer wall of the sealing gasket 7 is sealed on the inner wall of the body 4; when sealing gasket 7 wears to locate on neck bush 3, the outer wall of sealing gasket 7 can seal in 4 inner walls of body, perhaps show in this embodiment, have the clearance (avoid interfering, make things convenient for sealed 7 installation of packing) between the outer wall of sealing gasket 7 and the 4 inner walls of body, when sealed 7 confession contact tube inner end of packing to support the back, sealed 7 deformation of packing must make its outer wall seal in 4 inner walls of body, sealed 7 of packing has improved the leakproofness between protruding circle 31 and body 4, the inner leakproofness of takeover has also been guaranteed simultaneously.

The outer wall of the inner bushing 3 is embedded with a second sealing ring 10 which is arranged close to the sealing gasket 7, the outer edge of the second sealing ring 10 protrudes out of the outer wall of the inner bushing 3, the inner end of the connecting pipe abuts against the sealing gasket 7, and the outer edge of the second sealing ring 10 is sealed on the inner wall of the connecting pipe, so that the sealing performance between the connecting pipe and the inner bushing 3 is good. A third sealing ring 11 is embedded in the middle of the section of outer wall of the inner bushing 3 surrounded by the sleeve 2, the outer edge of the third sealing ring 11 protrudes out of the outer wall of the inner bushing 3, the outer edge of the third sealing ring 11 is used for sealing the inner wall of the connecting pipe, the sealing performance between the connecting pipe and the inner bushing 3 is further improved, and the connecting pipe is an aluminum-plastic pipe in the embodiment; during the in-service use, when the takeover is the hose, sealing washer three 11 provides the support and makes the takeover closely touch in 2 inner walls of sleeve, further avoids takeover axial outward shift, increases the fastness to connect.

Keep off shoulder 51 and have axial extension and supply the extension portion 511 that riveting portion 44 leaned on, extension portion 511 plays support and limiting displacement, avoids riveting portion 44 excessive throat and produces recessive crack or direct damage, when guaranteeing product quality, has reduced the leak source, has improved the leakproofness. The body 4 has the step three 45 that supports in spacing lid 5, and the height that highly is greater than jump ring 1 of step three 45 avoids spacing lid 5 pressure to decrease jump ring 1 like this, and jump ring 1 has certain deformation volume for the jack catch self-adaptation is locked in taking over, connects firmly, guarantees that the leakproofness is good. The outer wall of the outer end of the inner bush 3 is provided with a guide surface 33, and the outer wall of the inner bush 3 is processed with a chamfer or a fillet to form the guide surface 33, so that the guide function is achieved, and the outer sleeve of the inner bush 3 is convenient to take over.

Example 2

As shown in fig. 2, the structure and principle of the present embodiment are substantially the same as those of embodiment 1, and the difference lies in that the sealing structure in the present embodiment includes a radially outward protruding collar 32 on the outer wall of the inner end of the inner bushing 3, the inner bushing 3 is provided with an upper sealing washer 8 and a lower sealing washer 9 which are both annular, the upper sealing washer 8 abuts against the top surface of the protruding collar 32, when the adapter abuts against the upper sealing washer 8, the outer wall of the upper sealing washer 8 is sealed on the inner wall of the body 4, the bottom surface of the lower sealing washer 9 exceeds the bottom surface of the inner end of the inner bushing 3, and the lower sealing washer 9 is located between the collar 32. The lower sealing washer 9 is deformed under pressure to seal the first step 41, the bottom surface of the convex ring 32 and the inner wall of the body 4, multi-surface sealing is realized, the sealing area is large, the sealing performance is good, the convex ring 32 plays a supporting role, the lower sealing washer 9 is matched with the axial limit of the inner lining 3, the upper sealing washer 8 ensures the sealing performance of the inner end of the connecting pipe, and the sealing performance between the inner lining 3 and the inner wall of the body 4 is also ensured.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A quick-connecting pipe fitting comprises a clamp spring (1), a sleeve (2), an inner bushing (3) and a tubular body (4), wherein the clamp spring (1) is provided with a claw which inclines towards the inner end of the body (4), the inner end of the sleeve (2) is provided with a convex shoulder (21) which protrudes radially, the outer wall of the convex shoulder (21) is a conical surface which decreases gradually from the outer diameter to the inner end side of the sleeve (2), the inner bushing (3) is hollow and sequentially penetrates through the sleeve (2) and the clamp spring (1) to be inserted into the body (4), the body (4) is provided with a first step (41) at the inner end of the inner bushing (3), the quick-connecting pipe fitting is characterized in that the body (4) is provided with a second step (42) which is supported on the clamp spring (1), the inner wall of the body (4) is provided with a conical surface (43) which is positioned on the claw, and the end part of the body (4) is a riveting, the riveting portion (44) and the sleeve (2) are limited by a cylindrical limiting cover (5), the sleeve (2) is inserted into the limiting cover (5), the outer end of the sleeve (2) extends out of the limiting cover (5) and the inner end of the sleeve (2) is abutted to the clamping jaw, the outer end of the limiting cover (5) is provided with a retaining shoulder (51) which is radially inward convex and used for blocking the convex shoulder (21), and the inner end of the inner bushing (3) is provided with a sealing structure which is limited by a first step (41) and sealed on the inner wall of the body (4).

2. A quick-connect pipe according to claim 1, characterized in that said sealing structure comprises an inner end of the inner bush (3) having a radially protruding collar (31), said step one (41) being supported at the bottom of the collar (31), said collar (31) being fitted with a first sealing ring (6) for sealing against the inner wall of the body (4).

3. The quick-connection pipe fitting according to claim 2, wherein the sealing structure further comprises a sealing gasket (7) which is arranged in the inner bushing (3) in a penetrating manner, is annular and abuts against the top surface of the convex ring (31), and when the sealing gasket (7) abuts against the inner end of the contact pipe, the outer wall of the sealing gasket (7) is sealed on the inner wall of the body (4).

4. The quick-connecting pipe fitting according to claim 1, characterized in that the sealing structure comprises an inner liner (3) and an outer wall of the inner end of the inner liner provided with a radially outward protruding convex ring (32), the inner liner (3) is provided with an upper sealing washer (8) and a lower sealing washer (9) in a penetrating manner, the upper sealing washer (8) abuts against the top surface of the convex ring (32), when the connecting pipe abuts against the upper sealing washer (8), the outer wall of the upper sealing washer (8) is sealed against the inner wall of the body (4), the bottom surface of the lower sealing washer (9) exceeds the bottom surface of the inner end of the inner liner (3), and the lower sealing washer (9) is located between the convex ring (32) and the first step (41).

5. A quick-connect pipe fitting according to claim 1, 2, 3 or 4, characterized in that the outer wall of the inner bushing (3) is embedded with a second sealing ring (10) arranged close to the sealing gasket (7), and the outer edge of the second sealing ring (10) is arranged to protrude out of the outer wall of the inner bushing (3).

6. A quick-connect pipe fitting according to claim 5, characterized in that a third sealing ring (11) is embedded in the inner liner (3) at the middle of the section of the outer wall surrounded by the sleeve (2), and the outer edge of the third sealing ring (11) is protruded out of the outer wall of the inner liner (3).

7. A quick-connect element according to claim 6, characterized in that said stop shoulder (51) has an extension (511) axially extended and against which said riveting portion (44) abuts.

8. The quick-connect pipe fitting of claim 7, characterized in that the body (4) has a third step (45) supported on the limit cover (5), and the height of the third step (45) is greater than the thickness of the clamp spring (1).

9. A quick-connect pipe according to claim 8, characterized in that the outer wall of the outer end of the inner liner (3) has a guide surface (33).