CN112610773B

CN112610773B - Detachable quick inserting pipe

Info

Publication number: CN112610773B
Application number: CN202110033036.XA
Authority: CN
Inventors: 黄晓峰; 胡迪高
Original assignee: Taizhou Bancheng Hvac Technology Co ltd
Current assignee: Taizhou Bancheng Hvac Technology Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2022-07-22
Anticipated expiration: 2041-01-12
Also published as: CN112610773A

Abstract

The invention relates to the field of pipeline connection, in particular to a detachable quick-insertion pipe fitting which comprises a pipe fitting main body, wherein at least one quick plug is arranged on the pipe fitting main body, a lining pipe is arranged in the quick plug, a fixed lining pipe part of the lining pipe in the quick plug is of a folding structure, the flattening thickness of the fixed lining pipe part is not more than the gap between the inner diameter of an opening at the head part of the quick plug and the outer diameter of the pipe, and the outer extension part of the lining pipe is clamped so that the lining pipe can be integrally pulled out. The invention has the advantages of complete quick pipe inserting structure, few parts, compact structure and good guiding stability through the elastic lining pipe; especially, the special detachable lining pipe structure can effectively prevent the repeated use of pipe fittings, standardizes construction, and eliminates the potential safety hazard of pipeline connection, and has practical significance, high product practicability and market popularization value.

Description

Detachable quick insertion pipe

Technical Field

The invention relates to the field of pipeline connection, in particular to a detachable quick-insertion pipe fitting.

Background

In the pipeline connection mode, insert soon and connect to be a neotype physical connection structure, need not special mounting tool, can realize sealed and connection with pipe disect insertion pipe fitting, easy and simple to handle, it is high-efficient quick, along with the continuous improvement of pipeline construction labour cost, this type of pipe fitting has better market prospect.

Notice No. CN 106641509A's "take quick pipe fitting of inserting of guide ring", just demonstrated a current pipe fitting technique, prevented to withdraw from through annular jack catch chucking tubular product, and tubular product is more to going backwards, and the annular jack catch is more hugged closely, and the sealing washer realizes sealed effect to the tubular product inner wall, nevertheless if tubular product installation error, withdraws from the difficulty for this structure. CN205678319U "quick connector" provides another similar structure, which realizes the pipe installation guiding by arranging the lining pipe, and the pipe withdrawing is realized by pressing inwards. If the quick-insertion pipe fitting is reused after the pipe and the pipe fitting are withdrawn, potential safety hazards exist, for example, the sealing ring of the pipe fitting possibly has the problems that scratch is caused when the pipe fitting is inserted for the first time, the compression characteristic is invalid or uneven after long-term use, the deformation and the gripping force of the annular clamping jaw are insufficient, and the like, common pipe fitting manufacturers or construction specifications do not suggest the pipe fitting to be reused, and the problems that the responsibility cannot be defined exist in the pipe fitting manufacturers and construction units due to the leakage problem.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides the detachable quick-insertion pipe fitting with the novel structure, so that the pipe fitting can be conveniently and nondestructively taken out, the structural damage of the pipe fitting can be realized, the quick-insertion pipe fitting cannot be reused, the problem of pipe withdrawal at the pipeline joint is solved, the construction and installation specifications and safety are guaranteed, and the detachable quick-insertion pipe fitting has practical significance and market popularization value.

In order to achieve the purpose, the invention adopts the following technical scheme:

a detachable quick-insertion pipe fitting comprises a pipe fitting main body, wherein at least one quick plug is arranged on the pipe fitting main body, a sealing ring is arranged in the quick plug, a sealing fixed retaining ring, an annular clamping jaw and a lining pipe are sequentially arranged on the sealing ring towards the direction of a pipe fitting opening, the fixed lining pipe part of the lining pipe in the quick plug is of a folding structure, the flattening thickness of the fixed lining pipe part is not more than the gap between the inner diameter of an opening at the head of the quick plug and the outer diameter of the pipe, and the extension part of the lining pipe is clamped to integrally pull out the lining pipe.

The technical scheme of the invention can also comprise:

the lining pipe is provided with a line drawing structure with a point which is easy to break.

The structure of the easy-to-break point and the line is in an inclined distribution structure in the liner tube.

The structure of the easily broken dot line is one or more than two lines distributed on the lining pipe.

The quick plug is of an integral mortise and tenon structure, and the sealing fixing retaining ring, the annular clamping jaw and the lining pipe are wrapped inside.

The upper part of the annular clamping jaw is provided with an inner flanging structure, and the plane of the bottom of the fixed lining pipe part is propped against the inner flanging structure.

The annular clamping jaw is provided with a notch and is of a non-full-circle structure.

The annular clamping jaw is provided with a barb structure and support pillars, and the barb structure and the support pillars are alternately and uniformly distributed on the whole ring; and the top column props against the fixed sealing retaining ring.

The extension part is in a local extension distribution on the inner liner tube and is in a non-whole circle structure.

The lining pipe is made of elastic plastic materials.

The detachable quick inserting pipe fitting has a complete quick inserting pipe fitting structure, a few parts and a compact structure, and is good in guiding stability through the elastic lining pipe; especially, the special lining pipe structure that can dismantle can destroy quick pipe fitting structure when taking out tubular product is complete, prevents effectively that the pipe fitting from used repeatedly, stops the pipe connection potential safety hazard, and this quick pipe fitting has practical meaning on the guarantee construction standard, and the product has better market spreading value.

Drawings

FIG. 1 is a schematic cross-sectional view of a first embodiment of the present invention;

FIG. 2 is an exploded view of the first embodiment of the present invention;

FIG. 3 is a schematic perspective cross-sectional view illustrating a tube withdrawing operation according to a first embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a second embodiment of the present invention;

FIG. 5 is a schematic perspective view of an annular jaw according to a third embodiment of the present invention;

fig. 6 is a schematic perspective view of a lining tube according to a fourth embodiment of the present invention.

Detailed Description

The invention will be further described with reference to the drawings showing preferred embodiments.

As shown in the first preferred embodiment shown in FIGS. 1 and 2, a detachable quick-insertion pipe comprises a pipe body 1, at least one quick-insertion head 10 is arranged on the pipe body 1, a sealing ring 2 is arranged in the quick-insertion head 10, the sealing ring 2 is sequentially provided with a sealing fixing retainer ring 3, an annular claw 4 and a lining pipe 5 towards the pipe opening, a fixing lining pipe part 50 of the lining pipe 5 in the quick-insertion head 10 is of a folding structure, the flattening thickness of the fixing lining pipe part 50 is not more than the gap between the head opening inner diameter 11 of the quick-insertion head 10 and the outer diameter of the pipe 6, and an extending part 51 of the lining pipe 5 is clamped to enable the lining pipe 5 to be integrally pulled out.

The quick-insertion pipe fitting can seal and clamp the outer wall of the pipe 6 into which the pipe fitting is inserted, realizes sealed connection, and is convenient and quick to install. The method is suitable for metal pipes such as red copper, stainless steel and the like; the pipe inner support is added, so that the pipe can be used for aluminum plastic pipes, polyethylene pipes and the like.

The left side of the sealing ring 2 is provided with a blocking step structure, and a similar sealing groove structure is formed by the sealing ring and the fixed sealing ring 3. The fluid-tight retainer 3 may be formed integrally with the pipe fitting body 1 as shown in CN 205678319U. The sealing retaining ring 3 of this embodiment is a separate gasket, and may be a metal gasket or a plastic gasket, such as a POM or PTFE material.

The folded configuration of the fixed liner tube portion 50 may be a "[" or "hex" configuration, or a special routing configuration as shown in figure 1. The fixed liner tube section 50 is capable of pulling the folded over portion flat out of the gap between the inside diameter 11 of the head opening of the quick connector 10 and the outside diameter of the tube 6 under force. The lining pipe 5 is preferably made of elastic plastic material, such as nylon, polyethylene, polyvinyl chloride, etc., and may also be made of EVA, rubber, etc.

In order to facilitate the pulling out of the lining pipe 5 or the partial pulling out of the lining pipe, or the pulling out of the lining pipe 5 and the pipe, or the breaking of the structure of the lining pipe, a line structure 52 with a breaking point is arranged on the lining pipe 5. In the embodiment, the line easy-breaking structures 52 are distributed in an inclined manner in the liner pipe 5, and two line easy-breaking structures 52 are provided. The frangible line structures 52 may be one or more than two in the tube and distributed on the liner 5. In order to achieve the above-described function of the lining pipe 5, the lining pipe 5 may be designed to have one or more structures that are locally narrowed or thinned so that the lining pipe 5 is pulled apart or pulled out by an applied force.

The extension 51 is partially extended and distributed on the inner liner 5, and is not in a complete circle structure.

In the attached drawing, the quick plug 10 is of an integral mortise structure, the sealing fixing retainer ring 3, the annular clamping jaw 4 and the lining pipe 5 are wrapped, the structure is simple, the number of accessories is small, the implementation cost is low, the matching is simpler, the integral structure is the most important, the strength is high, and the connection and drawing performance is good.

The annular clamping jaw created by the invention has larger difference with the prior art structure. The upper part of the annular claw 4 is provided with an inward flanging structure 40, and the bottom plane 53 of the fixed lining pipe part 50 is pressed against the inward flanging structure 40. The annular claw 4 is provided with a barb structure 42 and a top column 43, and the barb structure 42 and the top column 43 are alternately and uniformly distributed on a whole circle; and the top leg 43 abuts against the stationary seal retainer 3.

Barb structure 42 generally adopts thinner sheet metal construction for chucking pipe 6, and cylindric annular jack catch 4 is thinner, can't realize the support to bushing pipe 5, and the structural design inside flanging structure 40 of annular jack catch 4 effectively solves this problem, and the support nature is good, has reduced the part, reduce cost improves the market competition of product.

The annular clamping jaws 4 are provided with notches 41 and are of a non-full-circle structure, the machining process is optimized, and the annular clamping jaws can be formed by bending a plate-type metal plate.

FIG. 3 is a schematic perspective sectional view showing the pipe withdrawal operation of the first embodiment, in which a tensile force is applied to the extension portion 51 of the inner liner pipe 5, the inner liner pipe 5 is deformed to be drawn out from the gap between the inner diameter 11 of the head opening of the quick connector 10 and the outer diameter of the pipe 6, and broken by the structure 52 of the easy-breaking point; the rear end of the annular claw 4 is unsupported and can be loosened, the casing tool 7 is opened and wraps the outer wall of the pipe 6, and the head sheet 70 is deeply inserted into the pipe and abuts against the barb structure 42 of the annular claw 4, so that the pipe 6 is not damaged, and the pipe 6 is smoothly pulled out.

After the pipe 6 is pulled out, the quick insertion pipe is damaged due to the lining pipe 5 and cannot be placed into the quick plug 10, the whole quick insertion pipe cannot be used, only a new pipe can be used, the used pipe is prevented from being reused or flowing into a construction site, and the construction standard safety is ensured.

The second preferred embodiment shown in fig. 4 is a direct type quick-connect pipe, and two quick-connect plugs 10 are provided on the pipe body 1, and the structure of the quick-connect plugs 10 is substantially the same as that of the first embodiment.

A detachable quick-inserting pipe fitting comprises a pipe fitting main body 1, two quick plugs 10 are arranged on the pipe fitting main body 1, a sealing ring 2 is arranged in each quick plug 10, a sealing fixing retaining ring 3, an annular clamping jaw 4 and a lining pipe 5 are sequentially arranged on each sealing ring 2 towards the pipe fitting opening direction, a fixing lining pipe part 50 of each lining pipe 5 in each quick plug 10 is of a folding structure, the flattening thickness of the fixing lining pipe part 50 is not larger than the gap between the head opening inner diameter 11 of each quick plug 10 and the outer diameter of each pipe 6, and an extending part 51 of each lining pipe 5 is clamped to enable the lining pipe 5 to be integrally pulled out.

A support gasket 8 is arranged between the annular clamping jaw 4 and the lining pipe 5. The supporting gasket 8 plays a role of limiting, and the material can be the same as that of the sealing fixing retainer 3. The supporting gasket 8 replaces the inner flanging structure 40 of the annular jaw 4 of the first embodiment. The size, thickness, support strength, etc. of the support spacer 8 can be flexibly configured.

In this embodiment, the folded structure of the fixed liner tube portion 50 is in a "[" shape.

The third preferred embodiment of the annular jaw 4 shown in fig. 5 is a full circle structure, and is substantially the same as the first embodiment. The structure is formed by processing a metal pipe, and the processing mode is completely different from that of an annular clamping jaw with a notch. The annular clamping jaw 4 with a full circle structure is uniformly stressed on the whole.

The upper part of the annular clamping jaw 4 is provided with an inner flanging structure 40; the annular jaw 4 is provided with barb structures 42 and studs 43, and the barb structures 42 and the studs 43 are alternately and uniformly distributed on the whole circle.

In the third preferred embodiment of the annular jaw 4 shown in fig. 6, the inner liner tube 5 comprises a fixed inner liner tube portion 50 having a folded structure, and an extension portion 51, wherein the extension portion 51 is partially extended and distributed on the inner liner tube 5, and is not in a full circle structure, but can be in a full circle structure. Is made of elastic plastic materials.

The lining pipe 5 is provided with a structure 52 which is easy to break and is marked with lines. The dashed-dotted structure 52 is provided at an intermediate position of the lining pipe 5.

The detachable quick inserting pipe fitting has the advantages of complete quick inserting pipe fitting structure, few parts, compact structure and good guiding stability through the elastic lining pipe; especially, the special interior bushing pipe structure that can dismantle can destroy quick pipe fitting structure when taking out the pipe is complete, prevents effectively that the pipe fitting used repeatedly, and the standard construction stops the pipe connection potential safety hazard, has practical meaning, and the product practicality is high, market spreading value.

Claims

1. The utility model provides a detachable inserts pipe fitting soon, includes a pipe fitting main part (1), has at least one fast plug (10) on pipe fitting main part (1), is equipped with sealing washer (2) in fast plug (10), and sealing washer (2) are equipped with one sealed retaining ring (3) towards pipe fitting mouth direction in proper order, an annular jack catch (4) to and bushing pipe (5) in one, its characterized in that: the fixed lining pipe part (50) of the lining pipe (5) in the quick plug (10) is of a folding structure, an inner flanging structure (40) is arranged at the upper part of the annular clamping jaw (4), and the bottom plane (53) of the fixed lining pipe part (50) is propped against the inner flanging structure (40); the flattening thickness of the fixed lining pipe part (50) is not more than the clearance between the inner diameter (11) of the head opening of the quick plug (10) and the outer diameter of the pipe (6); the extension part (51) of the lining pipe (5) is clamped, the whole lining pipe (5) is pulled out, then the head sheet (70) of the casing tool (7) is inserted into the quick plug (10) to abut against the annular clamping jaws (4), and the pipe (6) is pulled out.

2. A detachable quick-connect fitting as claimed in claim 1, wherein: the lining pipe (5) is provided with a line drawing structure (52) with a breakable point.

3. A detachable quick-connect fitting as claimed in claim 2, wherein: the easily broken point line drawing structure (52) is in an inclined distribution structure in the lining pipe (5).

4. A detachable quick-insertion tube member as claimed in claim 2 or 3, wherein: the easily broken dot line drawing structure (52) is one or more than two lines distributed on the inner liner tube (5).

5. A detachable quick-connect fitting as claimed in claim 1, wherein: the quick plug (10) is of an integral mortise and tenon structure, and wraps the sealing fixing retainer ring (3), the annular clamping jaw (4) and the lining pipe (5).

6. A detachable quick-connect fitting as claimed in claim 1, wherein: the annular clamping jaw (4) is provided with a notch (41) and is of a non-full-circle structure.

7. A detachable quick-connect pipe fitting according to claim 1, wherein: the annular claw (4) is provided with barb structures (42) and support columns (43), and the barb structures (42) and the support columns (43) are alternately and uniformly distributed on the whole circle; and the top column (43) is propped against the fixed sealing retaining ring (3).

8. A detachable quick-connect pipe fitting according to claim 1, wherein: the extension part (51) is in a local extension distribution on the inner liner pipe (5) and is not in a full circle structure.

9. A detachable quick-connect pipe fitting according to claim 1, wherein: the lining pipe (5) is made of elastic plastic materials.