CN216158559U - Sealing joint for PP pipe - Google Patents
Sealing joint for PP pipe Download PDFInfo
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- CN216158559U CN216158559U CN202121770754.7U CN202121770754U CN216158559U CN 216158559 U CN216158559 U CN 216158559U CN 202121770754 U CN202121770754 U CN 202121770754U CN 216158559 U CN216158559 U CN 216158559U
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- screwing
- sealing joint
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- 238000007789 sealing Methods 0.000 title claims abstract description 53
- 238000003825 pressing Methods 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 28
- 210000001503 joint Anatomy 0.000 claims abstract description 19
- 238000012856 packing Methods 0.000 claims abstract description 9
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims description 23
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 27
- 238000013461 design Methods 0.000 abstract description 13
- 239000004743 Polypropylene Substances 0.000 description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of butt joint of PP pipelines, and particularly discloses a sealing joint for a PP pipe, which comprises a connecting cylinder, wherein an internal screwing thread cylinder and an external packing cylinder are integrally formed at two ends of the connecting cylinder, a pipeline wedge opening is formed between the internal screwing thread cylinder and the external packing cylinder, external screwing thread sleeves are integrally formed at two sides of a screwing nut, and through grooves are formed at equal intervals around the circumference at one end of each external screwing thread sleeve; the front end of the outer packaging barrel is integrally provided with a metal pressing sheet at the position corresponding to the through groove, and the outer thread sleeve of the outer screwing thread sleeve is sleeved with an outer thread barrel. According to the utility model, through the structural design of the internal screwing thread cylinder and the external wrapping cylinder at the two ends of the connecting cylinder and the structures of the external screwing thread sleeve, the external thread cylinder and the like which are arranged in a matched manner, the sealing joint can realize an internal and external double fixing effect, and the stability of the sealing joint when being connected with a PP pipe can be effectively improved; the sealing joint has the effects of high stability, anti-dropping, loosening and anti-leaking.
Description
Technical Field
The utility model relates to the technical field of PP pipeline butt joint, in particular to a sealing joint for a PP pipe.
Background
The PP pipe is a non-toxic, sanitary, high-temperature resistant and recyclable pipe type with good performances such as non-rusting, abrasion resistance, non-scaling and frost cracking prevention, and is mainly applied to indoor cold and hot water supply systems and heating systems of buildings, the butt joint of the PP pipe is one of essential steps no matter whether the cold and hot water supply system or the heating system is laid and installed at present, and the sealing joint for the butt joint of the PP pipe adopts two types of connection modes, namely, external-screwing threaded sleeve joint and internal-screwing threaded plug joint; among two kinds of connected modes, it is single to twist the fixed mode of revolving, it connects and appears becoming flexible easily under external force (water hammer effect) effect with the connection between the pipeline port, its seal structure is difficult to remain stable unchangeable in permanent use, especially be applied to the pipeline of carrying hot and cold water, the weak expend with heat and contract with cold effect of its pipeline port, leakproofness when also can influence the pipeline butt joint, and under the influence of the produced water hammer effect when combining the closed operation of valves such as tap, the pipeline appears rocking, in the long run, can make the screw degree of agreeing with of pipeline interface end descend, seepage phenomenon appears in the junction easily.
Therefore, we have particularly proposed a PP pipe sealing joint having high stability, anti-drop, anti-loosening and high sealing properties.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a PP pipe sealing joint which has the advantages of high stability, looseness prevention and high sealing performance, and solves the problems that the existing PP pipe butt joint is single in butt joint fixing mode, poor in stability of a connecting and sealing structure and difficult to maintain in sealing effect.
The utility model discloses a sealing joint for a PP (polypropylene) pipe, which comprises a connecting cylinder, wherein an internal screwing threaded cylinder and an external packing cylinder are integrally formed at two ends of the connecting cylinder, a pipeline wedge opening is formed between the internal screwing threaded cylinder and the external packing cylinder, and a screwing nut formed by plastic is coated on the outer side of the connecting cylinder; the two sides of the screwing nut are integrally formed with external screwing thread sleeves, the external screwing thread sleeves are wrapped on the outer side of the outer packaging barrel, and through grooves are formed in the outer screwing thread sleeves at equal intervals around the circumference at one end, far away from the screwing nut, of each external screwing thread sleeve; two clamping grooves which are arranged in an annular mode are formed in the positions, located in the through grooves, of the inner side of the external screwing thread sleeve, plastic rings are embedded in the clamping grooves, and a metal pressing sheet is integrally formed at the position, corresponding to the through grooves, of the front end of the external wrapping cylinder; the bottom end of the metal pressing sheet is in contact with the outer side surface of the plastic ring; an external thread cylinder is sleeved on the outer side thread of the external screwing thread sleeve; and the external thread cylinder is wrapped with a screwing shell sleeve.
According to the sealing joint for the PP pipe, the pipeline wedge opening is used for butt joint of a butt joint port of the PP pipe, the thread wedge groove is prefabricated at the position, corresponding to the thread on the outer portion of the internal screwing thread cylinder, of the inner side of the butt joint port of the PP pipe, and the size of the butt joint port of the PP pipe is matched with that of the pipeline wedge opening.
The utility model relates to a sealing joint for a PP (polypropylene) pipe, wherein a connecting cylinder, an internal screwing thread cylinder and an external packing cylinder are made of stainless steel.
According to the sealing joint for the PP pipe, the outer edges of the connecting cylinder and the external thread cylinder are integrally formed with the engaging teeth, and the connection effect between the screwing nut and the screwing shell sleeve and between the connecting cylinder and the external thread cylinder can be more stable due to the arrangement.
According to the sealing joint for the PP pipe, the inner side of the front end of the external screwing thread sleeve and the inner side of the external wrapping cylinder are attached to the outer wall of the butt end buckle of the PP pipe, the inner edge of the plastic ring can be effectively attached to the outer wall of the mouth end of the PP pipe through the design, and the sealing joint has good anti-falling, anti-loosening and sealing and anti-leakage effects through the design of the metal pressing sheet and the external thread cylinder.
The utility model relates to a sealing joint for a PP pipe, wherein the top of a metal pressing sheet is designed in an arc structure, and the top end of the metal pressing sheet extends obliquely upwards to the outside of a through groove, the design can effectively press the metal pressing sheet when an external thread cylinder is screwed to the through groove, so that the bottom end of the metal pressing sheet presses a plastic ring, the connection between the plastic ring and the outer wall of the interface end of the PP pipe is tighter, the clamping force of a pipeline wedge port on the pipe wall of the interface end of the PP pipe is increased, the sealing effect of the sealing joint and the interface end of the PP pipe is further improved, the connection between the sealing joint and the PP pipe joint is more stable, the sealing joint has good anti-loosening, anti-falling and anti-leakage effects, the bottom end of the metal pressing sheet adopts an arc transition pressing sheet, the structural design can prevent the edge angle of the lower end of the metal pressing sheet from being too sharp in the process of pressing the metal pressing sheet, thereby cutting off the plastic ring and having good protection effect on the plastic ring.
According to the sealing joint for the PP pipe, the inner side of the front end of the internal screwing thread cylinder is designed to be the inclined surface structure, resistance generated when water flows through the sealing joint can be reduced to the maximum extent, and the water flows in a pipeline more smoothly.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model can greatly improve the stability when the PP pipe interface end is connected with the sealing joint through the structural design of the internal screwing thread cylinder and the external wrapping cylinder at the two ends of the connecting cylinder and the structures of the external screwing thread sleeve, the external thread cylinder and the like which are arranged in a matching way, meanwhile, by combining the structural designs of the outer wrapping cylinder, the outer screwed thread sleeve, the outer thread cylinder and the like, the sealing joint can be butted with a PP pipe in a traditional inner screwed thread inserting mode, can also carry out wrapping type fixing on the outer part of a PP pipe connecting port and is matched with the arranged inner screwed thread cylinder, the joint can effectively clamp and fix the pipe wall of the PP pipe connecting port, double fixing effects are realized, the stability of the sealing joint when the sealing joint is connected with the PP pipe can be effectively improved, and the phenomenon that the butt joint position of the PP pipe is loosened due to the influence of water hammer effect for a long time can be effectively avoided; the sealing joint has the effects of high stability, falling prevention and relaxation; and the design of combining the plastic ring can further improve the sealed effect of sealing joint, can ensure that this joint still possesses good sealed antiseep effect in long-term use.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic cross-sectional view of the present invention;
fig. 2 is a schematic sectional structure diagram of the butt joint of the PP pipe fitting and the pipeline wedge.
In the figure: 1. a connecting cylinder; 2. internally screwing the threaded cylinder; 3. wrapping a cylinder; 4. pipeline wedging; 5. screwing the nut; 6. externally screwing the threaded sleeve; 7. an externally threaded barrel; 8. screwing the shell sleeve; 9. fitting teeth; 10. a through groove; 11. metal tabletting; 12. a card slot; 13. a plastic ring; 14. PP pipe fittings.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the utility model. That is, in some embodiments of the utility model, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-2, the sealing joint for a PP tube of the present invention includes a connecting cylinder 1, wherein both ends of the connecting cylinder 1 are integrally formed with an internal screw thread cylinder 2 and an external packing cylinder 3, a pipeline wedge 4 is disposed between the internal screw thread cylinder 2 and the external packing cylinder 3, and a screw nut 5 made of plastic is coated outside the connecting cylinder 1; the two sides of the screwing nut 5 are integrally formed with external screwing thread sleeves 6, the external screwing thread sleeves 6 are wrapped on the outer side of the outer packaging barrel 3, and through grooves 10 are formed in the end, far away from the screwing nut 5, of the external screwing thread sleeves 6 at equal intervals around the circumference; two clamping grooves 12 which are annularly arranged are formed in the positions, located on the through grooves 10, of the inner side of the external screwing thread sleeve 6, plastic rings 13 are embedded in the clamping grooves 12, and metal pressing sheets 11 are integrally formed at the positions, corresponding to the through grooves 10, of the front end of the external wrapping cylinder 3; the bottom end of the metal pressing sheet 11 is contacted with the outer side surface of the plastic ring 13; the outer thread sleeve 7 is sleeved on the outer thread of the external screwing thread sleeve 6; the external thread cylinder 7 is externally wrapped with a screwing shell sleeve 8.
The pipeline wedge port 4 is used for butting a butting port of the PP pipe fitting 14, a thread wedge groove is prefabricated at the position, corresponding to the thread outside the internal screwing thread cylinder 2, of the inner side of the butting port of the PP pipe fitting 14, and the size of the butting port of the PP pipe fitting 14 is matched with that of the pipeline wedge port 4.
The connecting cylinder 1, the internal screwing thread cylinder 2 and the external packing cylinder 3 are made of stainless steel.
The outer edge of connecting cylinder 1 and external screw thread section of thick bamboo 7 all integrated into one piece have and agree with tooth 9, and this setting can make to twist to revolve revolves nut 5 and revolve the effect of being connected between revolving shell 8 and connecting cylinder 1 and the external screw thread section of thick bamboo 7 more stable.
The inboard of the 6 front ends of outer screw thread cover and the inboard of an outsourcing section of thick bamboo 3 all detain the outer wall laminating with the butt joint end of PP pipe fitting 14, and this design can ensure that plastic ring 13's interior edge is effectively laminated with the 14 interface end outer walls of PP pipe fitting, thereby makes this sealing joint possess good anticreep, locking and sealed leak protection effect with the help of the design of metal preforming 11 and external screw thread section of thick bamboo 7.
The top of the metal pressing sheet 11 is designed to be arc-shaped, and the top end of the metal pressing sheet 11 extends to the outside of the through groove 10 in an inclined and upward manner, the design can enable the external thread cylinder 7 to effectively press down the metal pressing sheet 11 when being screwed to the through groove 10, so that the bottom end of the metal pressing sheet 11 presses the plastic ring 13, the connection between the plastic ring 13 and the outer wall of the interface end of the PP pipe 14 is tighter, the clamping force of the pipeline wedge 4 on the pipe wall of the interface end of the PP pipe 14 is increased, simultaneously, the sealing effect of the sealing joint and the interface end of the PP pipe 14 is further improved, the connection between the sealing joint and the PP pipe 14 joint is more stable, the sealing joint has good anti-loosening, anti-dropping and anti-leaking effects, the bottom end of the metal pressing sheet 11 adopts arc transition, the structural design can prevent the edge angle of the lower end of the metal pressing sheet 11 from being too sharp, thereby cutting off the plastic ring 13 and having a good protection effect on the plastic ring 13.
The inner side of the front end of the internal screwing thread cylinder 2 is designed to be an inclined plane structure, and the design can reduce resistance generated when water flows through the sealing joint to the maximum extent, so that the water flows more smoothly in the pipeline.
In the use of the utility model: the mouth-piece pliers, a wrench and other tools are matched, the mouth end of the PP pipe fitting 14 is screwed into the pipeline wedge port 4, then the screwing shell sleeve 8 is screwed, the external thread cylinder 7 is screwed to the through groove 10, the pressing effect is carried out on the metal pressing sheet 11, so that the bottom end of the metal pressing sheet 11 presses the plastic ring 13, the connection between the plastic ring 13 and the outer wall of the mouth end of the PP pipe fitting 14 is tighter, the sealing effect of the sealing joint and the mouth end of the PP pipe fitting 14 is further improved, meanwhile, the sealing joint can be butted with a PP pipe in a traditional internal screwing thread plugging mode, the outer part of the mouth end of the PP pipe can be fixed in a coating mode, the internally screwing thread cylinder 2 is matched, the joint can effectively clamp and fix the pipe wall of the mouth end of the PP pipe, the double fixing effect is realized, and the stability of the sealing joint and the PP pipe when being connected can be effectively improved, the loosening of the butt joint part of the PP pipe due to the influence of the water hammer effect for a long time can be effectively avoided; the sealing joint has the effects of high stability, anti-dropping and loosening.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. A sealing joint for PP pipes comprises a connecting cylinder (1), and is characterized in that: an internal screwing thread cylinder (2) and an outer packaging cylinder (3) are integrally formed at two ends of the connecting cylinder (1), a pipeline wedge opening (4) is formed between the internal screwing thread cylinder (2) and the outer packaging cylinder (3), and a screwing nut (5) formed by plastic is coated on the outer side of the connecting cylinder (1); external screwed thread sleeves (6) are integrally formed on two sides of the screwed nut (5), the external screwed thread sleeves (6) are wrapped on the outer side of the outer wrapping barrel (3), and through grooves (10) are formed in one end, far away from the screwed nut (5), of the external screwed thread sleeves (6) at equal intervals around the circumference; two clamping grooves (12) which are annularly arranged are formed in the positions, located on the through grooves (10), of the inner sides of the external screwing thread sleeves (6), plastic rings (13) are embedded in the clamping grooves (12), and metal pressing sheets (11) are integrally formed at the positions, corresponding to the through grooves (10), of the front ends of the external wrapping cylinders (3); the bottom end of the metal pressing sheet (11) is in contact with the outer side surface of the plastic ring (13); an external thread cylinder (7) is sleeved on the outer thread of the external screwing thread sleeve (6); the external thread cylinder (7) is wrapped with a screwing shell sleeve (8).
2. The sealing joint for the PP pipe according to claim 1, wherein: the pipeline wedge opening (4) is used for butt joint of a butt joint port of the PP pipe fitting (14), a thread wedge groove is prefabricated at the position, corresponding to a thread on the outer portion of the internal screwing thread cylinder (2), of the inner side of the butt joint port of the PP pipe fitting (14), and the size of the butt joint port of the PP pipe fitting (14) is matched with that of the pipeline wedge opening (4).
3. The sealing joint for the PP pipe according to claim 1, wherein: the connecting cylinder (1), the internal screwing thread cylinder (2) and the external packing cylinder (3) are made of stainless steel.
4. The sealing joint for the PP pipe according to claim 1, wherein: the outer edges of the connecting cylinder (1) and the outer thread cylinder (7) are integrally formed with engaging teeth (9).
5. The sealing joint for the PP pipe according to claim 1, wherein: the inner side of the front end of the external screwing thread sleeve (6) and the inner side of the external wrapping barrel (3) are attached to the outer wall of the butt end buckle of the PP pipe fitting (14).
6. The sealing joint for the PP pipe according to claim 1, wherein: the top of the metal pressing sheet (11) is designed to be an arc-shaped structure, the top end of the metal pressing sheet (11) extends upwards to the outside of the through groove (10) in an inclined mode, and the bottom end of the metal pressing sheet (11) is in arc transition.
7. The sealing joint for the PP pipe according to claim 1, wherein: the inner side of the front end of the internal screwing thread cylinder (2) is designed to be an inclined plane structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121770754.7U CN216158559U (en) | 2021-07-29 | 2021-07-29 | Sealing joint for PP pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121770754.7U CN216158559U (en) | 2021-07-29 | 2021-07-29 | Sealing joint for PP pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216158559U true CN216158559U (en) | 2022-04-01 |
Family
ID=80837391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121770754.7U Active CN216158559U (en) | 2021-07-29 | 2021-07-29 | Sealing joint for PP pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216158559U (en) |
-
2021
- 2021-07-29 CN CN202121770754.7U patent/CN216158559U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240326 Address after: 062550 Nanxiaozheng Village, Xinhua Road Office, Renqiu City, Cangzhou City, Hebei Province Patentee after: Renqiu Zhongchuang Huishang Technology Co.,Ltd. Country or region after: China Address before: No. 23, Xiawan lane, Panyu Town, Guangzhou 510000, Guangdong Province Patentee before: Li Jincui Country or region before: China |