CN210950368U

CN210950368U - Joint

Info

Publication number: CN210950368U
Application number: CN201922063666.2U
Authority: CN
Inventors: 李宏生; 刘国庆; 梁宗军
Original assignee: Solvay Specialty Polymers USA LLC
Current assignee: Solvay Specialty Polymers USA LLC
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-07-07
Anticipated expiration: 2029-11-26

Abstract

The utility model provides a joint, include: a housing made of a first plastic material and comprising: a first end, a second end, and a channel between the first and second ends; an insert made of a second plastic material different from the first plastic material, the insert being fitted into the housing from the first end thereof, the insert having an insert passage inside. According to the utility model discloses a connect more to separate the water-fast rust corrosion-resistant of water resistance, the cost is more economic, and lead-free is more environmental protection.

Description

Joint

Technical Field

The utility model relates to a pipe connection field, more specifically, the utility model relates to a joint.

Background

Common connections between the water service equipment and the water supply line may include, for example: a first end for connection to a water utility and a second end for welding to an upstream water supply line. The second end of the fitting is often made of the same plastic material as the upstream water supply line, such as PPR (random copolymer polypropylene), PVC (polyvinyl chloride), CPVC (chlorinated polyvinyl chloride), etc., due to the need to weld with the upstream water supply line. On the other hand, the first end of the connector is generally required to have internal threads or/and external threads for connection to the water consuming device, whereas the plastic material is generally not strong enough to provide internal threads. Thus, the first end of the fitting is often molded with a metal (e.g., copper) insert having internal or/and external threads for connection with the water-consuming equipment.

PCT patent publication No. WO2013/092628, filed by solvay, 12/18/2012, discloses a polymer component (C) comprising at least one PAEK (polyaryletherketone), at least one PPSU (polyphenylsulfone), at least one PSU (polysulfone) and glass fibers. The polymer composition is used in, for example, household hot and cold water pipes, radiant heating systems, floor and wall panel heating and cooling systems, compressed air systems, natural gas pipeline systems, and the like.

U.S. patent application publication No. US2013/0255785a1, filed by basf corporation on 27/3 in 2013, discloses a pipe and connection for gas constructed of PPSU (polyphenylsulfone) material.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve or at least alleviate the problem that exists among the prior art.

In one aspect, a fitting is provided, comprising:

a housing made of a first plastic material and comprising: a first end, a second end, and a channel between the first and second ends;

an insert made of a second plastic material different from the first plastic material, the insert being fitted into the housing from the first end thereof, the insert having an insert passage inside.

Optionally, in an embodiment of the joint, the insert has a protrusion for circumferential stop on the outside to cooperate with a corresponding groove on the inside of a channel of the housing, the insert channel comprising an internal thread and/or an external thread.

Optionally, in an embodiment of the joint, the second plastic material has a greater strength than the first plastic material.

Optionally, in an embodiment of the joint, the first plastic material is selected from the group consisting of: PPR (random copolymer polypropylene), PP (polypropylene), PB (polybutylene), PPB (block copolymer polypropylene), PEX (cross-linked polyethylene), PVC (polyvinyl chloride) and CPVC (chlorinated polyvinyl chloride), and/or said second plastic material is selected from the group consisting of: PSU (polysulfone), PESU (polyethersulfone), PPSU (polyphenylsulfone), PA (polyamide), PPA (polyphthalamide), PARA (polyaramide), PBT (polybutylene terephthalate), PC (polyacrylate), PET (ethylene terephthalate), PVDF (polyvinylidene fluoride), ECTFE (ethylene chlorotrifluoroethylene copolymer), PEEK (polyetheretherketone), PAEK (polyaryletherketone), PFA (tetrafluoroethylene-perfluoroalkylvinylether copolymer), MFA (tetrafluoroethylene-perfluoromethylalkylvinylether copolymer) and PPS (polyphenylene sulfide).

Optionally, in an embodiment of the joint, the channel inside of the housing has a constriction.

Optionally, in an embodiment of the joint, the insert is snap-fitted into the housing from the first end of the housing.

Optionally, in an embodiment of the joint, the housing has a constriction in the channel and the insert front end has circumferentially distributed outward catches to fit into the constriction in the channel of the housing.

Optionally, in an embodiment of the fitting, the insert is threaded into the housing from the first end of the housing.

Optionally, in an embodiment of the joint, the passage of the housing has a constriction therein, and after the insert is mated with the housing, the front end of the insert abuts against the constriction, and the rear end of the insert has a circumferential stop tooth following the thread.

Optionally, in an embodiment of the joint, the joint further comprises a sleeve wrapped around the outside of the housing and the insert to secure the housing and the insert together, the sleeve being made of the same or a different plastic material as the housing.

Drawings

The principles of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:

FIG. 1 illustrates a perspective view of a joint according to one embodiment;

fig. 2 shows a cross-sectional view of a joint according to the embodiment of fig. 1;

fig. 3 shows a side view of an insert of the joint according to the embodiment of fig. 1;

fig. 4 shows a side view of the housing of the joint according to the embodiment of fig. 1;

FIG. 5 shows a perspective view of a joint according to another embodiment;

fig. 6 shows a cross-sectional view of a joint according to the embodiment of fig. 5;

fig. 7 shows a side view of an insert of the joint according to the embodiment of fig. 5;

fig. 8 shows a side view of the housing of the joint according to the embodiment of fig. 5;

FIG. 9 shows a perspective view of a joint according to yet another embodiment;

fig. 10 shows a cross-sectional view of a joint according to the embodiment of fig. 9;

fig. 11 shows a perspective view of an insert of the joint according to the embodiment of fig. 9;

fig. 12 shows a perspective view of the housing of the joint according to the embodiment of fig. 9; and

figure 13 shows a perspective view of the sleeve of the joint according to the embodiment of figure 9.

Detailed Description

It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structural modes and implementation modes can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.

The terms of orientation of upper, lower, left, right, front, rear, front, back, top, bottom, and the like referred to or which may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed accordingly depending on the position and the state of use. Therefore, these and other directional terms should not be construed as limiting terms.

An embodiment according to the present invention will be described first with reference to fig. 1 to 4. According to the utility model discloses a connect and include: a housing 1, the housing 1 being made of a first plastic material and comprising: a first end 11, a second end 12 and a channel 13 between the first end 11 and the second end 12; and an insert 2, the insert 2 being made of a second plastic material different from the first plastic material, the insert 2 being fitted into the housing 1 from the first end 11 of the housing 1, the insert 2 having an insert passage 23 inside. According to the utility model discloses a joint is formed by the independent fashioned casing 1 of two kinds of different plastic materials and the cooperation of insert 2 to the welding of threaded connection and the second end department that realizes connecting first end department, in addition, the insert 2 that adopts plastic material can conveniently assemble to casing 1, and its cost is more economic, and unleaded more environmental protection has strong resistant water rust corrosion-resistant of hydrolysising, can satisfy high pressure or high temperature channel's leakproofness requirement simultaneously.

In some embodiments, the insert 2 has a projection 21 for circumferential stop on the outside to mate with a corresponding groove 15 inside the channel of the housing 1. Thereby, the insert 2 will not rotate relative to the housing 1 due to the torque experienced during the screwing of the first end of the joint to the water-consuming equipment. While the outer side of the insert 2 is shown with 6 circumferentially distributed protrusions 21, in alternative embodiments the outer side of the insert 2 may have any number of protrusions, which may also be distributed differently than shown. In some embodiments, the insert passage 23 includes internal threads, alternatively the insert may have external threads, for example the insert may have a protrusion from the housing first end 11, which may have external threads.

In some embodiments, the second plastic material used for the insert 2 has a greater strength than the first plastic material of the housing 1, thereby ensuring the stability of the threaded connection of the joint to the water-consuming equipment. In some embodiments, the first plastic material may be selected from PPR (random copolymer polypropylene), PVC (polyvinyl chloride), CPVC (chlorinated polyvinyl chloride), and the like, and the second plastic material may be selected from PPSU (polyphenylsulfone), PPA (polyphthalamide), PPS (polyphenylene sulfide), and the like. For example, according to embodiments, said first plastic material may be selected from the group consisting of: PPR (random copolymer polypropylene), PP (polypropylene), PB (polybutylene), PPB (block copolymer polypropylene), PEX (cross-linked polyethylene), PVC (polyvinyl chloride) and CPVC (chlorinated polyvinyl chloride), and/or said second plastic material may be selected from the group consisting of: PSU (polysulfone), PESU (polyethersulfone), PPSU (polyphenylsulfone), PA (polyamide), PPA (polyphthalamide), PARA (polyaramide), PBT (polybutylene terephthalate), PC (polyacrylate), PET (ethylene terephthalate), PVDF (polyvinylidene fluoride), ECTFE (ethylene chlorotrifluoroethylene copolymer), PEEK (polyetheretherketone), PAEK (polyaryletherketone), PFA (tetrafluoroethylene-perfluoroalkylvinylether copolymer), MFA (tetrafluoroethylene-perfluoromethylalkylvinylether copolymer) and PPS (polyphenylene sulfide).

In some embodiments, the housing 1 has a larger outer diameter at the first end 11 than at the second end 12, thereby facilitating accommodation of the insert 2, while the housing 1 may have a transition from the larger outer diameter at the first end 11 to a smaller outer diameter at the second end 12. In some embodiments, the passage 13 of the housing 1 has a constriction 14 inside, at the location of which constriction 14 the passage 13 has the smallest inner diameter. In the embodiment shown in fig. 1 to 4, the insert 2 is snap-fitted into the housing 1 from the first end 11 of the housing 1. More specifically, the channel 13 of the housing 1 has a constriction 14 therein, and the front end of the insert 2 has circumferentially distributed outward catches 22 to fit into the constriction 14 in the channel of the housing. The hook 22 of this type has a sloping surface 221 of the front edge to facilitate its passage through the constricted portion 14 of the channel, and the rear side of the front edge of the hook has a flat surface 222, thereby abutting the constricted portion 14 when mounted in place.

With continued reference to fig. 5-8, another embodiment in accordance with the present invention will be described. In this embodiment, components having the same structure as those of fig. 1 to 4 are denoted by corresponding numerals and will not be described in detail. In this embodiment, the insert 20 is threaded into the housing 10 from the first end 101 of the housing 10. More specifically, the outer race of the insert 20 has external threads 202 to mate with internal threads at the first end 101 of the housing 10. In some embodiments, the passage 103 of the housing 10 has a constriction 104 therein, and after the insert 20 is mated with the housing 10, the front end of the insert 20 abuts the constriction 104. In some embodiments, to achieve circumferential spacing, the rear end of the insert 20 has a clockwise circumferential spacing tooth 201 (best seen in fig. 6) to mate with a correspondingly shaped groove 105 at the top of the first end 101 of the housing 1. Additionally, in some embodiments, the outer ring of the housing 10 may be provided with a protrusion 106, which may be used for a fixed mounting of the joint or to reinforce the strength of the housing 10, etc. Similarly, the insert 20 may have internal or external threads.

With continued reference to fig. 9-13, yet another embodiment according to the present invention is described. In this embodiment, components having the same structure as those of fig. 1 to 4 are denoted by corresponding numerals and will not be described in detail. In this embodiment, the joint further comprises a sleeve 300, the sleeve 300 being wrapped around the outside of the housing 100 and the insert 200 to secure the housing 100 and the insert 200 together. In some embodiments, the housing 100 and the insert 200 are first mated into an assembly, which is a plug-in only fit and is not positively secured in the axial direction. The case 100 and the insert 200 may then be secured together by compression molding the sleeve 300 over the assembly. Specifically, as shown in fig. 10, the case 300 includes a portion 3001 above the insert's circumferential limit projection 2001, a portion 3003 above the first end 1001 of the housing 100, and a portion 3002 below the transition zone 1007 from the first end 1001 to the second end 1002 of the housing, thereby wrapping the housing 100 and the insert 200, limiting axial relative movement therebetween. In addition, the case 300 also includes a portion 3004 outside the first end 1001 of the housing and a portion 3006 outside the second end 1002 of the housing. In some embodiments, the case 300 may be made of the same plastic material as the housing 200, whereby the properties of the two, such as thermal expansion, are similar and facilitate welding of the second end 1002 to the pipe, alternatively, the case 300 may be made of a different plastic material than the housing 200. Further, with reference to fig. 11, in some embodiments, the outer periphery of the insert 200 comprises projections 2001 for circumferential limitation, and, due to the moulding, correspondingly the casing 300 has grooves 3007 (fig. 13) cooperating therewith. In some embodiments, the housing 1 may also be provided with a groove that mates with the protrusion 2001 of the insert 200. In some embodiments, the outer ring of the housing 100 also has a protrusion 1006 for circumferential limitation, and correspondingly, the casing 300 has a groove 3008 to be fitted therewith. The insert 200 comprises a rear end face 2005 to abut against a portion 3001 of the sleeve 300. In some embodiments, the insert 200 includes a conduit portion 2004 that extends into the constriction 1004 of the housing 100. Similarly, the insert 2000 may have internal or external threads. In addition, in some embodiments, the outer ring of the casing 300 may be provided with a protrusion 3005, which may improve the strength of the joint and may also facilitate the installation and fixation of the joint in use.

It should be understood that while all embodiments of the present invention are directed to a joint comprising a straight channel, in alternative embodiments, the joint may comprise a non-linear channel between the first end and the second end, such as comprising one or more corners, e.g., an elbow, a tee, a cross, a multi-way joint. While all embodiments of the present invention are directed to including a female connector with internal threads, in alternative embodiments, the connector may also include a male connector with external threads.

It should be understood that while all embodiments of the present invention are directed to fittings used in water utility lines. In alternative embodiments, the novel joint of the utility model can be used in water consumption equipment and water consumption pipelines, and can also be used in pipeline systems of other fluids, thereby providing a more excellent corrosion-resistant, low-heavy metal content and lower-cost joint scheme.

It should be understood that all of the above preferred embodiments are exemplary and not restrictive, and that various modifications and changes in the specific embodiments described above, which may occur to those skilled in the art upon reading the teachings of the present invention, are intended to be within the scope of the appended claims.

Claims

1. A fitting, comprising:

a housing made of a first plastic material and comprising: a first end, a second end, and a channel between the first and second ends; and

2. A joint according to claim 1, wherein the insert outer side has a protrusion for circumferential stop to cooperate with a corresponding groove inside the channel of the housing, the insert channel comprising an internal and/or external thread.

3. The fitting according to claim 1, wherein said second plastic material has a greater strength than said first plastic material.

4. A joint according to claim 3, wherein said first plastic material is selected from the group consisting of: PPR, PP, PB, PPB, PEX, PVC and CPVC, and/or said second plastic material is selected from the group consisting of: PSU, PESU, PSU, PA, PPA, PARA, PBT, PC, PET, PVDF, ECTFE, PEEK, PAEK, PFA, MFA and PPS.

5. The fitting according to claim 1, wherein the channel interior of the housing has a constriction.

6. The fitting according to any one of claims 1 to 5, wherein the insert is snap-fitted into the housing from the first end thereof.

7. A connector as claimed in claim 6, wherein the channel of the housing has a constriction therein and the insert forward end has circumferentially distributed outwardly directed catches to engage the constriction in the channel of the housing.

8. The fitting according to any one of claims 1 to 5, wherein the insert is screw-fitted into the housing from the first end of the housing.

9. The fitting according to claim 8 wherein said housing has a constriction in said passageway and wherein said insert has a forward end abutting said constriction after said insert is mated with said housing and a rearward end having a threaded circumferential stop tooth.

10. The fitting according to any one of claims 1 to 5, further comprising a sleeve wrapped around the outside of the housing and the insert to secure the housing and the insert together, the sleeve being made of the same or different plastic material as the housing.