CN214064180U

CN214064180U - PP-R high-low pressure leakage-proof pipe fitting

Info

Publication number: CN214064180U
Application number: CN202022987085.0U
Authority: CN
Inventors: 林郑权; 程豆光; 尚晓园; 钟江平; 夏全峰; 雷旭光; 潘惠柱; 林枝汀; 孙世华; 王忠平; 周光勇; 姜志军; 刘利刚
Original assignee: Shanghai Tian Jing New Material Technology Co ltd
Current assignee: Shanghai Tian Jing New Material Technology Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-08-27
Anticipated expiration: 2030-12-10

Abstract

One end of a pipe body (1) is connected with a pipe orifice (2), and inserts (3) are installed at the port and the inner edge of the pipe orifice (2); the inner port of the insert (3) is partially turned outwards to fix the fan-shaped tail wing (37); a circular boss is protruded outwards beside a fan-shaped tail wing (37) at the outer edge of the inner section of the insert (3), a dovetail groove (33) is arranged on the outer wall of the circular boss in a surrounding mode, a high-pressure groove (35) in the shape of a circular groove is formed in the inner wall of the insert (3) corresponding to the dovetail groove (33), a circular boss protruding inwards is arranged at the inner section of the inner wall of the insert (3), a low-pressure groove (32) in the shape of a circular groove structure is formed in the outer wall of the insert (3) corresponding to the circular boss, and an internal thread (31) with threads is arranged at the outer section of the inner wall of the insert (3). The composite reinforced bonding strength of the multidirectional staggered scarf joint structure is adopted, so that the metal insert is kept firm and reliable under the complex working conditions of high and low pressure rudders, the installation is convenient, and the service life is long. The connecting part has high strength, is suitable for production and improves the product quality.

Description

PP-R high-low pressure leakage-proof pipe fitting

Technical Field

The utility model relates to a structure improvement technology of innovative equipment device, in particular to a PP-R high-low pressure leakage-proof pipe fitting.

Background

A PP-r (polypropylene random) tube, also called a polypropylene triple tube, a polypropylene random copolymer tube or a PPR tube, which is a tube made of polypropylene random copolymer. The PPR end is respectively connected with the cold water PPR pipe and the hot water PPR pipe, and the thread end is respectively connected with the cold water inlet pipe and the hot water outlet pipe of the water heater.

Compared with the traditional cast iron pipe, galvanized steel pipe, cement pipe and other pipelines, the PPR pipe has the advantages of energy conservation, material saving, environmental protection, light weight, high strength, corrosion resistance, smooth inner wall, no scaling, simple and convenient construction and maintenance, long service life and the like, and is widely applied to the building industry, municipal administration, industry and agricultural field such as building water supply and drainage, urban and rural water supply and drainage, urban gas, electric power and optical cable sheaths, industrial fluid delivery, agricultural irrigation and the like. The service life of the PP-R pipe can reach more than 50 years under the conditions that the working temperature is 70 ℃ and the working pressure (P.N) is 1.0MPa, and the premise is that the pipe is required to be more than S3.2 and S2.5 series; the service life can reach more than 100 years at the normal temperature of 20 ℃.

At present, the pipe fittings with inserts in a building water supply system are all made of metal materials, such as copper alloy, stainless steel, iron and the like. The metal heat conduction is fast, and when high-low pressure liquid when the pipe-line system transported hot water, metal insert easily appeared becoming flexible during the use, deviate from the pipe fitting, and the size is difficult to control in the machine tooling.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a PP-R high-low pressure leak protection pipe fitting overcomes metal insert connection structure under the high-low pressure condition and warp, improves the fastness, solves aforementioned prior art problem.

The purpose of the utility model is realized by the following technical measures: a PP-R high-low pressure leakage-proof pipe fitting comprises a pipe body, a pipe orifice and an insert; one end of the pipe body is connected with the pipe orifice, and the port and the inner edge of the pipe orifice are provided with inserts; the inner end port of the insert is locally outwards turned to fix the fan-shaped tail wing; the outer edge of the inner section of the insert is provided with a fan-shaped tail wing, a ring-shaped bulge is arranged on the outer wall of the ring platform in a protruding mode, a dovetail groove is formed in the inner wall of the insert corresponding to the dovetail groove in a surrounding mode, a ring platform protruding in a centripetal mode is arranged on the inner section of the inner wall of the insert, the outer wall of the insert corresponding to the ring platform is provided with a low-pressure groove of an annular groove structure, and the outer section of the inner wall of the insert is provided with a threaded inner thread.

In particular, the outer edge of the outer end face of the insert is turned over and crimped towards the inner end, which is embedded into the end face of the tube end.

In particular, the inner end of the inner wire of the inner wall of the insert is provided with a force dispersing groove with a ring groove structure.

In particular, the outer wall of the outer section of the insert is provided with at least two anti-rotation reinforcing ribs with annular bulge structures. The middle part of the outer wall of the anti-rotation reinforcing rib is convexly provided with a nail-shaped bulge.

Particularly, the fan-shaped tail wing is at least three pieces which are uniformly surrounded on the outer edge of the tail end of the insert.

The utility model discloses an advantage and effect: the composite reinforced bonding strength of the multidirectional staggered scarf joint structure is adopted, so that the metal insert is kept firm and reliable under the complex working conditions of high and low pressure rudders, the installation is convenient, and the service life is long. The connecting part has high strength, is suitable for production and improves the product quality.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

The reference numerals include:

the pipe comprises a pipe body 1, a pipe opening 2, an insert 3, an internal thread 31, a low-pressure groove 32, a dovetail groove 33, a force dispersing groove 34, a high-pressure groove 35, an anti-rotation reinforcing rib 36 and a sector-shaped empennage 37.

Detailed Description

The utility model discloses the principle lies in, sets up multilayer evagination structure at the different depth of advance cooperation of axial, moreover, sets up the fan-shaped fin 37 of local fretwork at the inserts root and overcomes rotatory not hard up.

The present invention will be further explained with reference to the drawings and examples.

Example 1: as shown in the attached figure 1, the PP-R high-low pressure leakage-proof pipe fitting comprises a pipe body 1, a pipe orifice 2 and an insert 3; one end of the pipe body 1 is connected with a pipe orifice 2, and the port and the inner edge of the pipe orifice 2 are provided with inserts 3; the inner port of the insert 3 is partially turned outwards to fix the sector empennage 37; a circular boss is protruded outside the fan-shaped tail wing 37 at the outer edge of the inner section of the insert 3, a dovetail groove 33 is surrounded on the outer wall of the circular boss, a groove-shaped high-pressure groove 35 is formed on the inner wall of the insert 3 corresponding to the dovetail groove 33, a circular boss protruding towards the center is arranged at the inner section of the inner wall of the insert 3, a low-pressure groove 32 with a circular groove structure is formed on the outer wall of the insert 3 corresponding to the circular boss, and an inner thread 31 with threads is arranged at the outer section of the inner wall of the insert 3.

In the above, the outer edge of the outer end face of the insert 3 is turned out and curled towards the inner end, and the curled edge is embedded into the end face of the pipe orifice 2.

In the above, the inner end of the inner wire 31 of the inner wall of the insert 3 is provided with the force dispersing groove 34 with a ring groove structure.

In the foregoing, the outer wall of the outer section of the insert 3 has at least two anti-rotation reinforcing ribs 36 with annular protrusion structures. The middle part of the outer wall of the anti-rotation reinforcing rib 36 is convexly provided with a nail-shaped protrusion.

In the above, the fan-shaped tail 37 is formed in at least three pieces and uniformly surrounds the outer edge of the tail end of the insert 3.

In the embodiment of the utility model, the low-pressure groove 32 is provided with high-pressure and low-pressure double insurance; the dovetail groove 33 is wide in the inside and narrow in the outside, and the mortise and tenon structure is firm; the valve at the angle of the force dispersing groove 34 extends to the bottom and cannot be broken when being screwed; the high-pressure groove 35 intercepts pressure layer by layer and is watertight; the anti-rotation reinforcing ribs 36 have strong torsion resistance; the sector empennage 37 is firmly grabbed at the bottom and has strong stability.

The embodiment of the utility model provides an in, body 1 is PP-R (polypropylene random) pipe, also known as three type polypropylene pipes, random copolymerization polypropylene pipe or PPR pipe, and inserts 3 is moulded plastics by plastic alloy and is made, and body 1, mouth of pipe 2 and inserts 3 adopt the secondary to mould plastics fixed manufacturing, realize the slow characteristic of plastic alloy heat conduction, make the difficult loss of heat. During machining, the machining size is easy to control, and the machining is convenient and is beneficial to batch production. The plastic alloy insert connecting structure of the pipe body 1, the pipe orifice 2 and the insert 3 is slow in heat conduction and strong in corrosion resistance, ensures the strength of a product, is not easy to separate from a pipe fitting during use, is convenient to process, and is energy-saving and environment-friendly.

The embodiment disclosed above is only one of the embodiments of the present invention, so as to facilitate the understanding of the reader, but it is not used to limit the present invention, and all embodiments obtained by adopting equivalent replacement or equivalent transformation based on the technical solution may fall within the protection scope of the present invention.

Claims

The PP-R high-low pressure leakage-proof pipe fitting comprises a pipe body (1), a pipe orifice (2) and an insert (3); it is characterized in that one end of the tube body (1) is connected with the tube orifice (2), and the end opening and the inner edge of the tube orifice (2) are provided with inserts (3); the inner port of the insert (3) is partially turned outwards to fix the fan-shaped tail wing (37); there is annular protrusion of a ring in the other evagination of inserts (3) inner segment outer fringe fan-shaped fin (37) to it has dovetail (33) to surround on this ring platform outer wall, and, have trough-shaped high-pressure groove (35) on inserts (3) inner wall that this dovetail (33) correspond, inserts (3) inner wall inner segment has the bellied ring platform of entad, inserts (3) outer wall that this ring platform corresponds has low-pressure groove (32) of annular groove structure, inserts (3) inner wall outer segment screwed internal thread (31).
2. The PP-R high and low pressure leakproof pipe fitting in accordance with claim 1, wherein the outer edge of the outer end face of the insert (3) is turned over and curled towards the inner end, and the curled edge is embedded in the end face of the pipe orifice (2).
3. The PP-R high-low pressure leakproof pipe fitting as claimed in claim 1, wherein the inner wall of the insert (3) is provided with a force dispersing groove (34) with a ring groove structure at the inner end of the internal thread (31).
4. The PP-R high and low pressure leakproof pipe fitting in accordance with claim 1, wherein the outer wall of the outer section of the insert (3) is provided with at least two anti-rotation reinforcing ribs (36) with annular convex structures.
5. The PP-R high and low pressure leakproof pipe fitting as claimed in claim 1, wherein the fan-shaped empennage (37) is formed into at least three pieces which uniformly surround the outer edge of the tail end of the insert (3).
6. The PP-R high and low pressure leakproof pipe fitting as claimed in claim 4, wherein the middle part of the outer wall of the anti-rotation reinforcing rib (36) is convexly provided with a nail-shaped protrusion.