CN113619170A - Ultra-high molecular weight polyethylene steel sleeve lining tee pipe fitting and manufacturing method thereof - Google Patents
Ultra-high molecular weight polyethylene steel sleeve lining tee pipe fitting and manufacturing method thereof Download PDFInfo
- Publication number
- CN113619170A CN113619170A CN202010376266.1A CN202010376266A CN113619170A CN 113619170 A CN113619170 A CN 113619170A CN 202010376266 A CN202010376266 A CN 202010376266A CN 113619170 A CN113619170 A CN 113619170A
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- Prior art keywords
- outer sleeve
- pipe lining
- steel outer
- molecular weight
- lining
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 72
- 239000010959 steel Substances 0.000 title claims abstract description 72
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 title claims abstract description 22
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000003754 machining Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 238000007789 sealing Methods 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 229920006158 high molecular weight polymer Polymers 0.000 abstract description 6
- 239000002861 polymer material Substances 0.000 abstract description 2
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000009969 flowable effect Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 231100000956 nontoxicity Toxicity 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920010741 Ultra High Molecular Weight Polyethylene (UHMWPE) Polymers 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009757 thermoplastic moulding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
- B29D23/003—Pipe joints, e.g. straight joints
- B29D23/008—T-joints
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses an ultra-high molecular weight polyethylene three-way pipe fitting, which comprises a main pipe lining and a branch pipe lining which are made of ultra-high molecular weight polymers, wherein the joint of the main pipe lining and the branch pipe lining is formed into a whole by an ultra-high molecular weight polyethylene additive and the main pipe lining through a hot-press forming method to form a saddle-shaped boss, and a three-way drift diameter is arranged in the middle of the boss through a machining mode; the outer sleeve of the main pipe lining is provided with a first steel outer sleeve, the inner lining of the branch pipe is provided with a third steel outer sleeve, one end of the third steel outer sleeve is connected with the second steel outer sleeve, and the end face of the boss is tightly jointed with the end face of the inner lining of the branch pipe to form a sealing surface; the invention also provides a manufacturing method of the three-way pipe. The three-way pipe fitting has the functions of corrosion resistance, impact resistance, wear resistance, no scaling and the like, and solves the problem that a high polymer material tee cannot be formed by hot melting.
Description
Technical Field
The invention relates to the field of pipe fittings, in particular to a three-way pipe fitting and a manufacturing method thereof.
Background
The ultra-high molecular weight polymer is a polymer with molecular mass more than 150 ten thousand, on one hand, the material shows excellent performance, on the other hand, the material has almost no fluidity in the molding process, and the material cannot be molded by adopting the traditional thermoplastic molding method. For example, the ultra-high molecular weight polyethylene (UHMWPE) is a thermoplastic engineering plastic, and has the performances of impact resistance, abrasion resistance, self-lubrication, chemical corrosion resistance, sanitation, non-toxicity, environmental protection and the like which are incomparable with other plastics. The ultra-high molecular weight polyethylene (UHMWPE) is also called as "wear-resistant king", the wear rate of the mortar is more than 5 times that of stainless steel, and the mortar can almost resist various corrosive media except a few organic solvents, so that the UHMWPE is the best wear-resistant and corrosion-resistant engineering plastic for conveying solid-liquid mixtures.
The tee joint is an important pipe fitting in the fluid conveying process, and particularly the pipe fitting which is most easily damaged in conveying corrosive solid-liquid mixed media. Thermoplastic tee fittings are typically injection molded. However, the ultra-high molecular weight polyethylene has huge molecular weight, and almost has no fluidity in the process of forming the three-way pipe fitting, so that the three-way pipe fitting cannot be directly formed by adopting an injection molding method, which is also the reason that the ultra-high molecular weight polyethylene three-way pipe fitting does not exist in the current market. Of course, other non-flowable ultrahigh molecular weight polymer materials cannot be used for manufacturing the tee pipe fitting in an injection molding mode.
Disclosure of Invention
The invention aims to provide a three-way pipe fitting and a manufacturing method thereof, and the method can adopt ultra-high molecular weight polyethylene with poor fluidity in the forming process to manufacture the three-way pipe fitting, so that the three-way pipe fitting has the functions of corrosion resistance, impact resistance, wear resistance and the like.
The technical scheme adopted by the invention is as follows:
a tee pipe manufacturing method comprises the following steps:
manufacturing a main pipe lining and a branch pipe lining by using an ultra-high molecular weight polymer;
adding a plasticized ultrahigh molecular weight gasket at the connecting surface of the main pipe lining and the branch pipe lining; locally heating the connecting surface and the ultrahigh molecular weight polymer until the connecting surface and the ultrahigh molecular weight polymer are plasticized, and pressing the ultrahigh molecular weight polymer into an annular boss through a die; then, opening holes in the main pipe lining in the boss in a machining mode to form holes communicated with the branch pipe lining; the diameter of the hole is smaller than the inner diameter of the annular boss;
a first steel outer sleeve is sleeved on the inner liner of the main pipe, and a second steel outer sleeve is arranged on the first steel outer sleeve; the second steel outer sleeve is arranged outside the annular boss;
inserting one end of the branch pipe lining into the inner ring of the annular boss and placing the branch pipe lining on the main pipe lining;
sleeving a third steel outer sleeve on the lining of the branch pipe, and connecting one end of the third steel outer sleeve with the second steel outer sleeve;
flanges are arranged at two ends of the first steel outer sleeve and the other end of the third steel outer sleeve.
According to the scheme, a sealing gasket is arranged at the joint of the main pipe lining and the branch pipe lining; the connecting surface of the main pipe lining and the branch pipe lining is enlarged by flanging.
According to the scheme, flanges are arranged at the two ends of the main pipe lining and the other ends of the branch pipe lining.
According to the scheme, the ultra-high molecular weight polymer is ultra-high molecular weight polyethylene or polytetrafluoroethylene.
According to the scheme, the first steel outer sleeve and the second steel outer sleeve can be integrally cast and can also be connected in a threaded or welding mode; the second steel outer sleeve and the third steel outer sleeve are connected through threads or in a welding mode.
The invention also discloses a three-way pipe fitting manufactured by the method, which comprises a main pipe lining and a branch pipe lining which are made of ultra-high molecular weight polymers, wherein an annular boss is arranged at the joint of the main pipe lining and the branch pipe lining, the inner diameter of the annular boss is equal to the outer diameter of the branch pipe lining, and the inner diameter of the annular boss is larger than the diameter of the hole on the main pipe lining; one end of the branch pipe lining is inserted into the annular boss and then is arranged on the main pipe lining, and the branch pipe lining is communicated with the main pipe lining;
the inner lining of the main pipe is sleeved with a first steel outer sleeve, the first steel outer sleeve is provided with a second steel outer sleeve, and the second steel outer sleeve is arranged outside the annular boss; a third steel outer sleeve is arranged on the inner liner of the branch pipe, and one end of the third steel outer sleeve is connected with the second steel outer sleeve;
flanges are arranged at two ends of the first steel outer sleeve and the other end of the third steel outer sleeve.
According to the scheme, in order to ensure the connection tightness, flanges are arranged at the two ends of the main pipe lining and the other ends of the branch pipe linings.
According to the scheme, in order to ensure the sealing performance of the three-way pipe fitting, a sealing gasket is arranged at the joint of the main pipe lining and the branch pipe lining; the connecting surface of the main pipe lining and the branch pipe lining is enlarged by flanging.
According to the scheme, in order to facilitate manufacturing, mounting and dismounting, the first steel outer sleeve and the second steel outer sleeve can be integrally poured and can also be connected in a threaded or welding mode.
In order to ensure the sealing performance of the joint surface, the tightness degree of threaded connection on the second steel outer sleeve and the third steel outer sleeve can be adjusted to realize the purpose; or under the action of external force, the first steel outer sleeve and the third steel outer sleeve are welded into a whole under the condition that the branch pipe lining is tightly attached to the main pipe lining.
In the invention, the main pipe lining and the branch pipe lining are ultra-high molecular weight polyethylene pipes generated by a mould pressing or screw extrusion process.
The invention has the following beneficial effects:
the method can adopt the non-flowable material (such as ultra-high molecular weight polyethylene) to manufacture the three-way pipe fitting, so that the three-way pipe fitting has the performances of impact resistance, wear resistance, self-lubrication, chemical corrosion resistance, sanitation, no toxicity, environmental protection and the like;
the three-way pipe fitting has the performances of impact resistance, wear resistance, self-lubrication, chemical corrosion resistance, sanitation, no toxicity, environmental protection and the like;
the steel outer sleeve is arranged on the tee pipe body consisting of the main pipe lining and the branch pipe lining, so that the service life of the whole tee pipe can be prolonged;
the annular boss is arranged at the connecting surface of the main pipe lining and the branch pipe lining, so that the branch pipe lining is convenient to fix and install, and the manufacturing is simple and easy.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural view of a tee of the present invention;
FIG. 2 is a schematic view showing a connection structure of a first steel outer sleeve and a second steel outer sleeve;
FIG. 3 is a schematic view of the structure of the main pipe liner and annular boss;
FIG. 4 is a side view of the main pipe liner and annular boss;
FIG. 5 is a schematic illustration of a construction of a branch pipe liner;
FIG. 6 is a schematic structural view of a third steel outer sleeve.
Wherein: 1. the main pipe lining, 2, the branch pipe lining, 3, the boss, 4, the gasket, 5, the first steel outer sleeve, 6, the second steel outer sleeve, 7, the third steel outer sleeve, 8, the flange, 9, connect the face.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-6, a method of manufacturing a tee fitting includes the steps of:
a main pipe lining 1 and a branch pipe lining 2 which are made of ultra-high molecular weight polyethylene;
adding ultra-high molecular weight polyethylene at the joint surface 9 of the main pipe lining 1 and the branch pipe lining 2; locally heating the connecting surface 9 and the ultra-high molecular weight polyethylene until the connecting surface and the ultra-high molecular weight polyethylene are plasticized, and pressing the ultra-high molecular weight polyethylene into an annular boss 3 through a die; then, a hole is formed in the main pipe lining 1 in the boss 3 in a machining mode to form a hole communicated with the branch pipe lining 2; the diameter of the hole is smaller than the inner diameter of the annular boss 3;
a first steel outer sleeve 5 is sleeved outside the main pipe lining 1, and a second steel outer sleeve 6 is arranged on the first steel outer sleeve 5 (the first steel outer sleeve 5 and the second steel outer sleeve 6 can be integrally cast and can also be connected in a threaded or welding mode); the second steel outer sleeve 6 is arranged outside the annular boss 3;
inserting one end of a branch pipe lining 2 into the inner ring of the annular boss 3 and placing the branch pipe lining on the main pipe lining 1; a sealing gasket 4 is arranged at the joint of the main pipe lining 1 and the branch pipe lining 2; the connecting surface of the main pipe lining 1 and the branch pipe lining 2 is enlarged by flanging the main pipe lining 1 and the branch pipe lining 2;
a third steel outer sleeve 7 is sleeved on the branch pipe lining 2, and one end of the third steel outer sleeve 7 is connected with the second steel outer sleeve 6 (the external thread of the third steel outer sleeve 7 is connected with the internal thread of the second steel outer sleeve 6);
flanges are arranged at two ends of the first steel outer sleeve 5 and the other end of the third steel outer sleeve 7.
In order to achieve a better sealing effect, flanges are arranged at two ends of the main pipe lining 1 and the other end of the branch pipe lining 2.
Referring to fig. 1-6, a three-way pipe fitting manufactured by the method comprises a main pipe lining 1 and a branch pipe lining 2 made of ultra-high molecular weight polyethylene, wherein an annular boss 3 is arranged at the joint of the main pipe lining 1 and the branch pipe lining 2, the inner diameter of the annular boss 3 is equal to the outer diameter of the branch pipe lining 2, and the inner diameter of the annular boss 3 is larger than the diameter of an opening on the main pipe lining 1; one end of the branch pipe lining 2 is inserted into the annular boss 3 and then is arranged on the main pipe lining 1, and the branch pipe lining 2 is communicated with the main pipe lining 1; a sealing gasket 4 is arranged at the joint of the main pipe lining 1 and the branch pipe lining 2; the connecting surface of the main pipe lining 1 and the branch pipe lining 2 is enlarged by flanging;
a first steel outer sleeve 5 is sleeved outside the main pipe lining 1, a second steel outer sleeve 6 is arranged on the first steel outer sleeve 5, and the second steel outer sleeve 6 is arranged outside the annular boss 3; a third steel outer sleeve 7 is arranged on the branch pipe lining 2, and one end of the third steel outer sleeve 7 is connected with the second steel outer sleeve 6;
flanges 8 are arranged at two ends of the first steel outer sleeve 5 and the other end of the third steel outer sleeve 7.
In order to ensure the connection tightness, flanges are required at the two ends of the main pipe lining 1 and the other end of the branch pipe lining 2.
In order to facilitate manufacturing, mounting and dismounting, the first steel outer sleeve 5 and the second steel outer sleeve 6 can be integrally cast or connected in a threaded or welding mode.
In order to ensure the sealing performance of the joint surface, the tightness degree of threaded connection on the second steel outer sleeve 6 and the third steel outer sleeve 7 can be adjusted; the second steel outer jacket 6 and the third steel outer jacket 7 may be welded integrally with the branch pipe inner liner 2 being in close contact with the main pipe inner liner 1 by an external force.
In the invention, the main pipe lining 1 and the branch pipe lining 2 are ultra-high molecular weight polyethylene pipes generated by a mould pressing or screw extrusion process. The invention has reliable performance and simple structure, and fills the blank that no ultra-high molecular weight polyethylene tee pipe fitting exists at present.
The invention can be made of other ultra-high molecular weight polymers, such as polytetrafluoroethylene, besides ultra-high molecular weight polyethylene materials. Of course other non-flowable materials can be made into tee by the process.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (2)
1. A manufacturing method of a tee pipe fitting is characterized by comprising the following steps:
forcibly extruding the main pipe lining into a steel tee joint, adding a plasticized ultrahigh molecular weight polyethylene gasket at the connecting surface of the main pipe lining and the branch pipe lining, locally heating the connecting surface until the connecting surface is plasticized, pressing the connecting surface into a whole by a die at the pressure of not less than 9Mpa, and enabling the adding part to form a saddle-shaped boss; then, opening holes in the main pipe lining in the boss in a machining mode to form holes communicated with the branch pipe lining; the diameter of the hole is smaller than the inner diameter of the annular boss.
2. And under the condition of ensuring that the lining surface of the second straight pipe is tightly combined and sealed with the ultra-high molecular weight polyethylene boss surface, the second steel outer sleeve and the third steel outer sleeve are connected through threads or in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010376266.1A CN113619170A (en) | 2020-05-07 | 2020-05-07 | Ultra-high molecular weight polyethylene steel sleeve lining tee pipe fitting and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010376266.1A CN113619170A (en) | 2020-05-07 | 2020-05-07 | Ultra-high molecular weight polyethylene steel sleeve lining tee pipe fitting and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113619170A true CN113619170A (en) | 2021-11-09 |
Family
ID=78376763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010376266.1A Pending CN113619170A (en) | 2020-05-07 | 2020-05-07 | Ultra-high molecular weight polyethylene steel sleeve lining tee pipe fitting and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113619170A (en) |
-
2020
- 2020-05-07 CN CN202010376266.1A patent/CN113619170A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20211109 |
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| WD01 | Invention patent application deemed withdrawn after publication |