CN112780867A

CN112780867A - Water pipe joint for PPR conversion

Info

Publication number: CN112780867A
Application number: CN201911092801.4A
Authority: CN
Inventors: 周海骄; 俞张信; 甘以峰; 王定松; 倪飞波; 陈旗; 丁少甲
Original assignee: Anhui Huijiu Pipe Industry Co ltd
Current assignee: Anhui Huijiu Pipe Industry Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2021-05-11
Anticipated expiration: 2039-11-11
Also published as: CN112780867B

Abstract

The invention discloses a water pipe joint for PPR conversion, which comprises a PPR water pipe joint, wherein a metal connecting pipe is arranged inside one end of the PPR water pipe joint, the inner wall of the metal connecting pipe is provided with an internal thread, positioning bulges are arranged on two sides of the metal connecting pipe close to the middle part, the positioning bulges and the surface of the metal connecting pipe are integrally formed, three sealing grooves are formed on the surfaces of the metal connecting pipe close to two ends, a novel piston ring is arranged inside each sealing groove, a plurality of pressing devices are uniformly arranged on one side of each novel piston ring and one side of each sealing groove, each novel sealing ring comprises a ring body and an opening section, and mounting grooves are formed in one side of two. The novel piston ring is arranged, so that the side wall and the surface of the ring body are still in sealing contact with the sealing groove and the inner wall of the PPR water pipe joint, and water leakage or splashing between the PPR water pipe joint and the metal connecting pipe is prevented, so that workers are prevented from being injured.

Description

Water pipe joint for PPR conversion

Technical Field

The invention relates to the technical field of PPR water pipe connectors, in particular to a water pipe connector for PPR conversion.

Background

The PP-R (polypropylene) pipe is also called a three-type polypropylene pipe and a random copolymerization polypropylene pipe or a PPR pipe, has the advantages of energy conservation, material conservation, 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, is widely applied to the building industry, municipal administration, industry and agricultural fields 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, adopts the random copolymerization polypropylene to extrude into a pipe, is injected into a pipe fitting, and has wide application of the PPR pipe.

However, when some modern families or enterprises use water, often need to be connected PPR pipeline and stainless steel pipeline, traditional connector adopts the mode of hot melt to cup joint the thread bush inside the PPR water pipe, then carry out threaded connection when the installation, when PPR water pipe joint is used for the boiler in hot-water room, because the temperature of carrying is higher, and the material meets high temperature and all has the effect of thermal expansion, and PRR water pipe and metal interface adopt different materials, consequently its inflation size is also different, wherein PRR water pipe inflation degree is greater than metal joint's inflation degree, consequently lead to easily producing the clearance between PRR water pipe and the metal joint, lead to hot water seepage or spray water scald, staff easily.

Therefore, it is necessary to invent a water pipe joint for PPR conversion to solve the above problems.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the water pipe joint for PPR conversion, which is beneficial to ensuring that the side wall and the surface of the ring body are still in sealing contact with the sealing groove and the inner wall of the PPR water pipe joint through the arrangement of the novel piston ring, and preventing water flow between the PPR water pipe joint and the metal connecting pipe from leaking or splashing to cause injury to workers, thereby solving the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a water pipe joint for PPR conversion comprises a PPR water pipe joint, wherein a metal connecting pipe is arranged inside one end of the PPR water pipe joint, the inner wall of the metal connecting pipe is provided with an internal thread, two sides of the metal connecting pipe close to the middle part are respectively provided with a positioning bulge, the positioning bulges and the surface of the metal connecting pipe are integrally formed, the surface of the metal connecting pipe close to two ends is respectively provided with three sealing grooves, a novel piston ring is arranged inside each sealing groove, a plurality of pressing devices are uniformly arranged on one sides of the novel piston ring and the sealing grooves, each novel sealing ring comprises a ring body and an opening section, one side of each ring body is provided with a mounting groove, two mounting grooves are internally inserted with the same sealing plate in a sliding and inserting manner, the two ends of each sealing plate are fixedly connected with a, when the opening section is located at the maximum value, the side wall of the sealing plate is arranged in the sealing groove in an abdicating mode.

Preferably, closing device includes first pressure strip and second pressure strip, be provided with a plurality of spring between first pressure strip and the second pressure strip, be provided with a plurality of steel ball between second pressure strip and the novel piston ring, the steel ball is located the activity of second pressure strip surface and inlays the setting.

Preferably, first pressure strip and second pressure strip are the arc setting, first pressure strip and seal groove inner wall phase-match, second pressure strip and novel piston ring lateral wall phase-match.

Preferably, the three opening sections of the novel piston ring are arranged in a staggered mode, and the angle between every two adjacent opening sections is 120 degrees.

Preferably, be hot melt connection between PPR water pipe head and the metal connecting pipe, the internal diameter of metal connecting pipe matches with the internal diameter of PPR water pipe head other end.

Preferably, the novel piston ring is arranged by a compression ring, and the ring body, the sealing plate and the sliding block are all made of nodular cast iron materials.

Preferably, the end section of the ring body is rectangular, and the side face of the ring body is matched with the sealing groove.

Preferably, the sealing plate is arranged in an arc shape, the length of the sealing plate is equal to the total length of the two mounting grooves, and the height of the sealing plate is equal to the depth of the mounting grooves.

Preferably, the one side that PPR water pipe head and metal connecting pipe contacted is smooth setting, the upper surface and the sealed setting of PPR water pipe head inner wall of novel sealing ring.

Preferably, one end of the inside of the sliding groove is communicated with the upper surface of the ring body, the sliding groove and the sliding block are connected and arranged for a precise matching part, and the sealing plate and the mounting groove are connected and arranged for the precise matching part.

The invention has the technical effects and advantages that:

1. the novel piston ring is arranged, so that the novel piston ring is beneficial to sealing between the PPR water pipe joint and the metal connecting pipe, and effectively, when a gap is generated between the PPR water pipe joint and the metal connecting pipe due to thermal expansion, the novel piston ring increases the overall diameter of the novel piston ring under the action of self elasticity, so that the side wall and the surface of the ring body are still in sealing contact with the sealing groove and the inner wall of the PPR water pipe joint, and the phenomenon that a gap is generated between the PPR water pipe joint and the metal connecting pipe due to thermal expansion, water flow leakage or splashing is caused, and workers are injured is prevented.

2. The compression device is arranged, so that the side wall of the novel piston ring is always in contact with the sealing groove, and poor sealing caused by a gap between the novel piston ring and the sealing groove when the diameter of the novel piston ring is increased is prevented.

Drawings

FIG. 1 is a cross-sectional view of a one-piece construction metal connecting tube of the present invention;

FIG. 2 is a cross-sectional view of a PPR water pipe joint of the present invention in its overall configuration;

FIG. 3 is a cross-sectional view of a thermally expansive unitary structure of the present invention;

FIG. 4 is a schematic view of the structure of part A of FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the structure of part B in FIG. 2 according to the present invention;

FIG. 6 is a schematic view of the structure of the portion C in FIG. 3 according to the present invention;

FIG. 7 is a schematic view of the novel seal ring closure of the present invention;

FIG. 8 is a schematic view of the novel seal ring opening structure of the present invention;

FIG. 9 is a left side view of the novel seal ring end construction of the present invention;

FIG. 10 is a schematic view of the novel seal ring installation groove structure of the present invention.

In the figure: 1. a PPR water pipe joint; 2. a metal connecting pipe; 3. positioning the projection; 4. a sealing groove; 5. a novel piston ring; 6. a pressing device; 7. a ring body; 8. an opening section; 9. mounting grooves; 10. a sealing plate; 11. a slider; 12. a chute; 13. a first compression plate; 14. a second compression plate; 15. a spring; 16. and (5) steel balls.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

according to the water pipe joint for PPR conversion shown in figures 1-10, which comprises a PPR water pipe joint 1, a metal connecting pipe 2 is arranged inside one end of the PPR water pipe joint 1, the inner wall of the metal connecting pipe 2 is arranged as an internal thread, positioning protrusions 3 are arranged on the two sides of the metal connecting pipe 2 close to the middle part, and the positioning protrusions 3 are arranged, so that the metal connecting pipe 2 is prevented from falling off when the PPR water pipe joint 1 is expanded by heat, the positioning protrusions 3 and the surface of the metal connecting pipe 2 are integrally formed, three sealing grooves 4 are formed on the surfaces of the metal connecting pipe 2 close to the two ends, a novel piston ring 5 is arranged inside the sealing groove 4, three novel piston rings 5 are arranged at the two ends, so that parameter air leakage can be prevented according to the sealing principle of the piston rings, and the sealing effect is enhanced, a plurality of pressing devices 6 are uniformly arranged on, the novel sealing ring comprises a ring body 7 and an opening section 8, and is beneficial to sealing between a PPR water pipe joint 1 and a metal connecting pipe 2 by adopting the novel piston ring 5 by arranging the novel piston ring 5, so that when a gap is generated between the PPR water pipe joint 1 and the metal connecting pipe 2 due to thermal expansion effectively, the novel piston ring 5 increases the overall diameter of the novel piston ring 5 under the action of self elasticity, the side wall and the surface of the ring body 7 are still in sealing contact with the sealing groove 4 and the inner wall of the PPR water pipe joint 1, thereby preventing the gap generated between the PPR water pipe joint 1 and the metal connecting pipe 2 due to thermal expansion from causing water leakage or splashing and causing the injury of workers, mounting grooves 9 are respectively formed on one side of two ends of the ring body 7, the same sealing plate 10 is inserted in the two mounting grooves 9 in a sliding manner, and sliding blocks 11 are fixedly, one side inner wall of mounting groove 9 all seted up with slider 11 assorted spout 12, when opening section 8 was located the maximum value, the lateral wall of closing plate 10 let lie in seal groove 4 inside setting.

Further, in the above technical solution, the pressing device 6 includes a first pressing plate 13 and a second pressing plate 14, a plurality of springs 15 are disposed between the first pressing plate 13 and the second pressing plate 14, a plurality of steel balls 16 are disposed between the second pressing plate 14 and the novel piston ring 5, the steel balls 16 are movably embedded on the surface of the second pressing plate 14, and the pressing device 6 is disposed to facilitate the sidewall of the novel piston ring 5 to be always in contact with the sealing groove 4, so as to prevent the novel piston ring 5 from generating a gap with the sealing groove 4 when the diameter is increased, thereby causing poor sealing;

further, in the above technical solution, the first compression plate 13 and the second compression plate 14 are both arranged in an arc shape, the first compression plate 13 is matched with the inner wall of the seal groove 4, and the second compression plate 14 is matched with the side wall of the novel piston ring 5;

furthermore, in the above technical solution, the opening sections 8 of the three novel piston rings 5 are arranged in a staggered manner, and the angle between two adjacent opening sections 8 is 120 degrees, which is beneficial to preventing blow-by between the novel piston rings 5 and enhancing sealing;

further, in the above technical solution, the PPR water pipe joint 1 and the metal connecting pipe 2 are connected by hot melting, and the inner diameter of the metal connecting pipe 2 is matched with the inner diameter of the other end of the PPR water pipe joint 1;

furthermore, in the above technical solution, the novel piston ring 5 is provided by a compression ring, and the ring body 7, the sealing plate 10 and the sliding block 11 are all made of nodular cast iron material, which is beneficial to making the novel piston ring 5 have the effects of wear resistance and strong elasticity;

furthermore, in the above technical solution, the cross-sectional shape of the end of the ring body 7 is rectangular, and the side surface of the ring body 7 is matched with the sealing groove 4, which is beneficial to sealing the side wall of the novel piston ring 5 in contact with the sealing groove 4;

further, in the above technical solution, the sealing plate 10 is arranged in an arc shape, the length of the sealing plate 10 is equal to the total length of the two mounting grooves 9, and the height of the sealing plate 10 is equal to the height of the ring body 7, which is beneficial to keeping the novel piston ring 5 and the sealing plate 10 inside the sealing groove 4;

further, in the above technical solution, one surface of the PPR water pipe joint 1 contacting the metal connecting pipe 2 is smoothly arranged, and the upper surface of the novel sealing ring is hermetically arranged with the inner wall of the PPR water pipe joint 1, which is beneficial to sealing between the PPR water pipe joint 1 and the metal connecting pipe 2 by the novel piston ring 5;

further, in the above technical scheme, one end of the inside of the sliding groove 12 is communicated with the upper surface of the ring body 7, the sliding groove 12 and the sliding block 11 are connected and arranged for a precision matching part, and the sealing plate 10 and the mounting groove 9 are connected and arranged for a precision matching part, so that the gap between the mounting groove 9 and the sliding groove 12 is prevented from being generated, and the leakage is caused.

The working principle of the invention is as follows:

referring to the attached drawings 1-10 of the specification, when the PPR water pipe joint 1 is connected with the metal connecting pipe 2, the ring body 7 of the novel piston ring 5 is placed inside the sealing groove 4, then the opening section 8 of the novel piston ring 5 is stretched by using a tool, the sealing plate 10 and the slider 11 are inserted into the mounting groove 9 and the mounting groove 9, then the pressing device 6 is placed inside the sealing groove 4, the first pressing plate 13 is in contact with the inner wall of the sealing groove 4, the second pressing plate 14 is in contact with the side wall of the ring body 7, so that the pressing device 6 presses the other side of the ring body 7 inside the sealing groove 4, the sealing plate 10 is movably inserted at the end of the ring body 7, then the PPR water pipe joint 1 and the metal connecting pipe 2 are connected by hot melting, after the PPR water pipe joint 1 is connected with the metal connecting pipe 2, the end of the novel piston ring 5 inside is completely overlapped, so that the PPR water pipe joint 1 and the metal, when the PPR water pipe joint 1 is used for inputting hot water, a gap is generated between the PPR water pipe joint 1 and the metal connecting pipe 2 due to thermal expansion, the novel piston ring 5 increases the gap between two ends under the action of self elasticity, so that the integral diameter of the novel piston ring 5 is increased, when the integral diameter of the novel piston ring 5 is increased, the opening section 8 is increased, so that the sealing plate 10 and the sliding block 11 slide in the mounting groove 9 and the sliding groove 12, the side wall and the surface of the sealing plate 10 are sealed with the inner wall of the PPR water pipe joint 1, so that the side wall and the surface of the ring body 7 are still in sealing contact with the sealing groove 4 and the inner wall of the PPR water pipe joint 1, the phenomenon that a gap is generated between the PPR water pipe joint 1 and the metal connecting pipe 2 due to thermal expansion, water leakage or splashing is caused, and workers are injured is avoided, after the PPR water pipe joint 1 and the metal connecting pipe 2 are restored, the two ends of the novel piston ring 5 are closed again, and sealing is continued.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a water pipe head for PPR conversion, includes PPR water pipe head (1), its characterized in that: the inner part of one end of the PPR water pipe joint (1) is provided with a metal connecting pipe (2), the inner wall of the metal connecting pipe (2) is arranged in an internal thread manner, the metal connecting pipe (2) is close to two sides of the middle part and is provided with positioning protrusions (3), the surfaces of the positioning protrusions (3) and the metal connecting pipe (2) are arranged in an integrated manner, the surface of the metal connecting pipe (2) close to two ends is provided with three sealing grooves (4), a novel piston ring (5) is arranged in each sealing groove (4), one side of each novel piston ring (5) and one side of each sealing groove (4) are uniformly provided with a plurality of pressing devices (6), each novel sealing ring comprises a ring body (7) and an opening section (8), one side of each two ends of the ring body (7) is provided with a mounting groove (9, equal fixedly connected with slider (11) at closing plate (10) both ends, one side inner wall of mounting groove (9) all seted up with slider (11) assorted spout (12), when opening section (8) are located the maximum value, the lateral wall of closing plate (10) lets lie in seal groove (4) inside setting.

2. A water pipe connection for PPR conversion as claimed in claim 1, wherein: the pressing device (6) comprises a first pressing plate (13) and a second pressing plate (14), a plurality of springs (15) are arranged between the first pressing plate (13) and the second pressing plate (14), a plurality of steel balls (16) are arranged between the second pressing plate (14) and the novel piston ring (5), and the steel balls (16) are located on the surface of the second pressing plate (14) and are movably embedded.

3. A water pipe connection for PPR conversion as claimed in claim 2, wherein: the novel piston ring is characterized in that the first pressing plate (13) and the second pressing plate (14) are both arranged in an arc shape, the first pressing plate (13) is matched with the inner wall of the sealing groove (4), and the second pressing plate (14) is matched with the side wall of the novel piston ring (5).

4. A water pipe connection for PPR conversion as claimed in claim 1, wherein: three opening sections (8) of the novel piston ring (5) are arranged in a staggered mode, and the angle between every two adjacent opening sections (8) is 120 degrees.

5. A water pipe connection for PPR conversion as claimed in claim 1, wherein: be the hot melt between PPR water pipe head (1) and metal connecting pipe (2) and be connected, metal connecting pipe (2) internal diameter and the internal diameter phase-match of PPR water pipe head (1) other end.

6. A water pipe connection for PPR conversion as claimed in claim 1, wherein: the novel piston ring (5) is arranged by a compression ring, and the ring body (7), the sealing plate (10) and the sliding block (11) are all made of nodular cast iron materials.

7. A water pipe connection for PPR conversion as claimed in claim 1, wherein: the end section shape of the ring body (7) is a rectangular shape, and the side face of the ring body (7) is matched with the sealing groove (4).

8. A water pipe connection for PPR conversion as claimed in claim 1, wherein: the sealing plate (10) is arranged in an arc shape, the length of the sealing plate (10) is equal to the total length of the two mounting grooves (9), and the height of the sealing plate (10) is equal to that of the ring body (7).

9. A water pipe connection for PPR conversion as claimed in claim 1, wherein: the one side that PPR water pipe head (1) and metal connecting pipe (2) contacted sets up for smooth, the upper surface and the sealed setting of PPR water pipe head (1) inner wall of novel sealing ring.

10. A water pipe connection for PPR conversion as claimed in claim 1, wherein: the inner side end of the sliding groove (12) is communicated with the upper surface of the ring body (7), the sliding groove (12) and the sliding block (11) are connected and arranged through a precision matching part, and the sealing plate (10) and the mounting groove (9) are connected and arranged through the precision matching part.