CN210950280U - Plastic-coated metal pipe threaded joint - Google Patents
Plastic-coated metal pipe threaded joint Download PDFInfo
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- CN210950280U CN210950280U CN201921776851.XU CN201921776851U CN210950280U CN 210950280 U CN210950280 U CN 210950280U CN 201921776851 U CN201921776851 U CN 201921776851U CN 210950280 U CN210950280 U CN 210950280U
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- flaring
- collet
- nut
- compactor
- plastic
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Abstract
The utility model belongs to the field of the pipe connection, concretely relates to cover and mould tubular metal resonator screwed joint, including main nut, set up built-in flaring collet in main nut's the rear portion, the rear end outer fringe of built-in flaring collet extends towards the back, the first flaring collet positioning nut of this outer fringe inner wall threaded connection, the rear end inner edge of built-in flaring collet sets up the convex first outer circular conical surface towards the back, first flaring collet positioning nut's front end has the first interior conical surface that corresponds with first outer circular conical surface, first flaring collet positioning nut's rear end has the first flaring collet positioning nut internal thread that is used for the first plastic tubular metal resonator of covering of fixed connection. The utility model has the advantages that: the plastic-coated metal pipe has the advantages of good sealing performance, convenience and quickness in installation and compact structure, and can be widely applied.
Description
Technical Field
The utility model belongs to the pipe connection field, concretely relates to cover and mould tubular metal resonator screwed joint.
Background
In water supply systems, stainless steel pipes, plastic pipes, composite pipes, plastic-coated metal pipes and plastic-coated copper pipes have become common pipes for piping systems. The plastic-coated metal pipe has the advantages of safety, reliability, environmental protection and sanitation, and is widely accepted by the industry. However, in the prior art, a reliable and convenient threaded joint for the plastic-coated metal pipe is still lacked to be matched with the plastic-coated metal pipe, so that the plastic-coated metal pipe is more widely applied and accepted.
SUMMERY OF THE UTILITY MODEL
In order to make up for the not enough of prior art, the utility model provides a cover and mould technical scheme of tubular metal resonator screwed joint.
The plastic-coated metal pipe threaded connector is characterized by comprising a main nut, wherein an internally-installed flaring compressor is arranged in the rear part of the main nut, the outer edge of the rear end of the internally-installed flaring compressor extends backwards, the inner wall of the outer edge is in threaded connection with a first flaring compressor positioning nut, the inner edge of the rear end of the internally-installed flaring compressor is provided with a first outer conical surface protruding backwards, the front end of the first flaring compressor positioning nut is provided with a first inner conical surface corresponding to the first outer conical surface, and the rear end of the first flaring compressor positioning nut is provided with a first flaring compressor positioning nut internal thread for fixedly connecting a first plastic-coated metal pipe.
The plastic-coated metal pipe threaded joint is characterized in that the front part of the main nut is in threaded connection with an external thread flaring compactor, the outer edge of the front end of the external thread flaring compactor extends forwards, the inner wall of the outer edge is in threaded connection with a second flaring compactor positioning nut, the inner edge of the front end of the external thread flaring compactor protrudes forwards to form a second external conical surface, the rear end of the second flaring compactor positioning nut is provided with a second internal conical surface corresponding to the second external conical surface, and the front end of the second flaring compactor positioning nut is provided with a second flaring compactor positioning nut internal thread used for fixedly connecting a second plastic-coated metal pipe.
The plastic-coated metal pipe threaded joint is characterized in that an end face sealing ring is arranged between the rear end of the external thread flaring compactor and the front end of the built-in flaring compactor.
The plastic-coated metal pipe threaded connector is characterized in that the front part of a nut hole of the main nut is a threaded hole, the rear part of the nut hole is a through hole, a first step is arranged on the through hole, the diameter of the front part of the through hole is larger than that of the rear part of the through hole, a second step corresponding to the first step is arranged on the built-in flaring compressor, and the first step is buckled with the second step.
The plastic-coated metal pipe threaded joint is characterized in that the front end of the built-in flaring compactor is provided with an inner polygonal hole.
The plastic-coated metal pipe threaded joint is characterized in that the rear end of the first flaring compactor positioning nut, the front end of the external thread flaring compactor and the front end of the second flaring compactor positioning nut are respectively of an outer polygonal head structure.
The plastic-coated metal pipe threaded joint is characterized by comprising an external thread flaring compressor, wherein the outer edge of the front end of the external thread flaring compressor extends forwards, the inner wall of the outer edge is in threaded connection with a second flaring compressor positioning nut, the inner edge of the front end of the external thread flaring compressor protrudes forwards to form a second external conical surface, the rear end of the second flaring compressor positioning nut is provided with a second internal conical surface corresponding to the second external conical surface, and the front end of the second flaring compressor positioning nut is provided with a second flaring compressor positioning nut internal thread for fixedly connecting a second plastic-coated metal pipe.
The plastic-coated metal pipe threaded joint is characterized in that the front end of the external thread flaring compactor and the front end of the second flaring compactor positioning nut are both in an external polygonal head structure.
Compared with the prior art, the utility model discloses the leakproofness is good, simple to operate is quick, compact structure, can make to cover and mould the tubular metal resonator and obtain more extensive application.
Drawings
FIG. 1 is a schematic sectional view of example 1;
FIG. 2 is an exploded view of example 1;
FIG. 3 is an enlarged view of FIG. 1 at D;
FIG. 4 is a schematic cross-sectional view of an internally flared impactor in accordance with example 1;
FIG. 5 is a schematic cross-sectional view of the male flare impactor in accordance with example 1;
FIG. 6 is a schematic sectional view showing the structure of example 2;
FIG. 7 is a schematic cross-sectional view showing the structure of example 3.
In the figure: the flaring device comprises a main nut 1, a first step 10, a built-in flaring compactor 2, a built-in flaring compactor internal thread 20, a first external conical surface 21, a second step 22, a first flaring compactor positioning nut 3, a first internal conical surface 30, a second flaring compactor positioning nut 4, an external thread flaring compactor 5, an external thread flaring compactor internal thread 50, a second external conical surface 51, an end face seal ring 6, a first plastic-coated metal pipe 7 and a second plastic-coated metal pipe 8.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 5, a plastic-coated metal pipe threaded joint comprises a main nut 1, wherein the front part of a nut hole of the main nut 1 is a threaded hole, the rear part of the nut hole is a through hole with a smooth inner wall, and the through hole is provided with a first step 10, so that the diameter of the front part of the through hole is larger than that of the rear part. The screw hole threaded connection external screw thread flaring collet 5 of main nut 1 sets up built-in flaring collet 2 in the through-hole of main nut 1, has the second step 22 that corresponds with first step 10 on the built-in flaring collet 2, and first step 10 and second step 22 looks lock make built-in flaring collet 2 compressed tightly towards the back by external screw thread flaring collet 5. The rear end outer edge of the built-in flaring compactor 2 extends backwards, the inner wall of the outer edge is provided with a built-in flaring compactor internal thread 20, the inner edge of the rear end of the built-in flaring compactor 2 is provided with a first outer conical surface 21 which protrudes backwards, the rear end part of the outer edge is positioned behind the rear end part of the inner edge, and a socket for inserting the first flaring compactor positioning nut 3 is formed between the outer edge and the inner edge. Specifically, the built-in flaring compactor internal thread 20 of the built-in flaring compactor 2 is in threaded connection with the first flaring compactor positioning nut 3, the front end inner edge of the first flaring compactor positioning nut 3 forms a first inner conical surface 30 corresponding to the first outer conical surface 21, and the rear end of the first flaring compactor positioning nut 3 is provided with a first flaring compactor positioning nut internal thread for fixedly connecting the first plastic-coated metal pipe 7.
The outer edge of the front end of the external thread flaring compactor 5 extends in advance, the inner wall of the outer edge is provided with an internal thread 50 of the external thread flaring compactor, the inner edge of the front end of the external thread flaring compactor 5 protrudes forwards to form a second external conical surface 51, the position of the front end part of the outer edge is closer to the front than the position of the front end part of the inner edge, and a socket for inserting the positioning nut 4 of the second flaring compactor is formed between the two. Specifically, the external thread flaring compactor internal thread 50 is in threaded connection with the second flaring compactor positioning nut 4, the rear end of the second flaring compactor positioning nut 4 is provided with a second inner conical surface corresponding to the second outer conical surface 51, and the front end of the second flaring compactor positioning nut 4 is provided with a second flaring compactor positioning nut internal thread used for being fixedly connected with the second plastic-coated metal pipe 8. The second flare impactor retainer nut 4 is substantially identical in construction to the first flare impactor retainer nut 3.
And an end face seal ring 6 is arranged between the rear end of the external thread flaring compactor 5 and the front end of the built-in flaring compactor 2.
The front end of the internally-installed flaring compactor 2 is provided with an inner polygonal hole, preferably an inner hexagonal hole, so that the internally-installed flaring compactor can be conveniently screwed by using a hexagonal wrench.
The rear end of first flaring collet chuck position nut 3, the front end of second flaring collet chuck position nut 4 and the front end of external screw thread flaring collet chuck 5 are outer polygon head structure, are outer hexagon head structure preferably, facilitate the use hexagon socket head wrench to twist and move.
During the use, the utility model discloses a first flaring collet fixture set nut 3 moulds 7 spiro union with first covering, first flaring collet fixture set nut internal thread of first flaring collet fixture set nut 3 covers with first covering moulds the epidermis interlock of coating of metal pipe 7, reach the purpose of connecting, first front end metal pipe of covering and moulding metal pipe 7 exposes, then carry out the flaring to this part metal pipe, pack into built-in flaring collet fixture 2 with first flaring collet fixture set nut 3 again in, make the metal pipe press from both sides tightly between the first outer conical surface 21 of built-in flaring collet fixture 2 and the first inner conical surface 30 of first flaring collet fixture set nut 3 by the part of flaring, reach sealed purpose. The first step 10 of the main nut 1 catches the second step 22 of the flared impactor 2 causing the flared impactor 2 to be impacted within the main nut 1. The effect of external screw flaring collet 5 is similar to built-in flaring collet 2, and the front end spiro union second flaring collet positioning nut 4 of external screw flaring collet 5, and the mode that second flaring collet positioning nut 4 and external screw flaring collet 5 are connected second and are covered plastic metal pipe 8 is the same with the mode that first flaring collet positioning nut 3 and built-in flaring collet 2 are connected first and are covered plastic metal pipe 7, no longer explains repeatedly.
In addition, example 1 can also be disassembled into the following examples 2 and 3 for use.
Example 2
As shown in fig. 6, in embodiment 2, on the basis of embodiment 1, the second flaring compactor positioning nut 4, the externally threaded flaring compactor 5 and the end sealing ring 6 are removed, and other structures are completely the same.
Example 2 differs from example 1 in the use: the front end of the main nut 1 is directly connected with a water tap or other liquid equipment or gaseous equipment, the built-in flaring compactor 2 is compacted by the connected object, and the use modes of the first flaring compactor positioning nut 3 and the built-in flaring compactor 2 are the same as those of the embodiment 1.
Example 3
As shown in fig. 7, a plastic-coated metal pipe screwed joint, including external thread flaring collet 5, the rear portion of external thread flaring collet 5 has the external thread, the front end outer fringe of external thread flaring collet 5 extends forward, this outer fringe inner wall sets up external thread flaring collet internal thread 50, the front end inner fringe of external thread flaring collet 5 is protruding forward and is formed second external conical surface 51, external thread flaring collet internal thread 50 threaded connection second flaring collet positioning nut 4, the rear end of second flaring collet positioning nut 4 has the second internal conical surface that corresponds with second external conical surface 51, the front end of second flaring collet positioning nut 4 has the second flaring collet positioning nut internal thread that is used for fixed connection second plastic-coated metal pipe 8.
The front end of external screw thread flaring collet 5 and the front end of second flaring collet positioning nut 4 are outer polygon head structure, are outer hexagonal head structure best, facilitate the use allen key to twist.
The structures of the male-threaded flare impactor 5 and the second flare impactor retainer nut 4 are completely the same as those of embodiment 1.
Example 3 method of use with reference to example 1, the only difference is that the rear end of the externally threaded flare impactor 5 is directly connected to a faucet or other liquid, gaseous device.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a cover and mould tubular metal resonator screwed joint, its characterized in that includes main nut (1), set up built-in flaring collet (2) in the rear portion of main nut (1), the rear end outer fringe of built-in flaring collet (2) extends backward, first flaring collet positioning nut (3) of this outer fringe inner wall threaded connection, the rear end inner edge of built-in flaring collet (2) sets up convex first outer conical surface (21) backward, the front end of first flaring collet positioning nut (3) has first interior conical surface (30) that correspond with first outer conical surface (21), the rear end of first flaring collet positioning nut (3) has the first flaring collet positioning nut internal thread that is used for the first plastic-coated tubular metal resonator (7) of fixed connection.
2. The plastic-coated metal pipe threaded joint according to claim 1, characterized in that the front portion of the main nut (1) is in threaded connection with an external thread flaring compactor (5), the outer edge of the front end of the external thread flaring compactor (5) extends forwards, the inner wall of the outer edge is in threaded connection with a second flaring compactor positioning nut (4), the inner edge of the front end of the external thread flaring compactor (5) protrudes forwards to form a second external conical surface (51), the rear end of the second flaring compactor positioning nut (4) is provided with a second internal conical surface corresponding to the second external conical surface (51), and the front end of the second flaring compactor positioning nut (4) is provided with a second flaring compactor positioning nut internal thread for fixedly connecting a second plastic-coated metal pipe (8).
3. The plastic-coated metal pipe threaded joint according to claim 2, characterized in that an end face seal ring (6) is arranged between the rear end of the externally threaded flaring crimper (5) and the front end of the internally installed flaring crimper (2).
4. A threaded joint for plastic-coated metal pipes according to any one of claims 1 to 3, characterized in that the nut hole of the main nut (1) is threaded at the front and through at the rear, with a first step (10) on the through hole, so that the diameter of the front of the through hole is greater than the diameter of the rear, and the internal flared impactor (2) has a second step (22) corresponding to the first step (10), the first step (10) engaging with the second step (22).
5. A threaded joint for plastic-coated metal pipes according to any of claims 1 to 3, characterized in that the front end of the built-in flared impactor (2) has an internal polygonal hole.
6. The plastic-coated metal pipe threaded joint according to claim 2 or 3, characterized in that the rear end of the first flaring compactor positioning nut (3), the front end of the externally threaded flaring compactor (5), and the front end of the second flaring compactor positioning nut (4) are all in the shape of an externally polygonal head.
7. The utility model provides a cover and mould tubular metal resonator screwed joint, its characterized in that includes external screw thread flaring collet (5), the front end outer fringe of external screw thread flaring collet (5) extends forward, this outer fringe inner wall threaded connection second flaring collet set nut (4), the front end inner edge of external screw thread flaring collet (5) is the protrusion forward and is formed second external cone face (51), the rear end of second flaring collet set nut (4) has the second internal cone face that corresponds with second external cone face (51), the front end of second flaring collet set nut (4) has the second flaring collet set nut internal thread that is used for fixed connection second to cover and moulds tubular metal resonator (8).
8. The plastic-coated metal pipe threaded joint according to claim 7, characterized in that the front end of the externally threaded flaring crimper (5) and the front end of the second flaring crimper positioning nut (4) are both of an externally polygonal head structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921776851.XU CN210950280U (en) | 2019-10-22 | 2019-10-22 | Plastic-coated metal pipe threaded joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921776851.XU CN210950280U (en) | 2019-10-22 | 2019-10-22 | Plastic-coated metal pipe threaded joint |
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| Publication Number | Publication Date |
|---|---|
| CN210950280U true CN210950280U (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921776851.XU Active CN210950280U (en) | 2019-10-22 | 2019-10-22 | Plastic-coated metal pipe threaded joint |
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| Country | Link |
|---|---|
| CN (1) | CN210950280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645424A (en) * | 2019-10-22 | 2020-01-03 | 杭州杭一科技有限公司 | Plastic-coated metal pipe threaded joint |
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2019
- 2019-10-22 CN CN201921776851.XU patent/CN210950280U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645424A (en) * | 2019-10-22 | 2020-01-03 | 杭州杭一科技有限公司 | Plastic-coated metal pipe threaded joint |
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