CN103075581A - Three-layer pipe and manufacture method thereof - Google Patents
Three-layer pipe and manufacture method thereof Download PDFInfo
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- CN103075581A CN103075581A CN2013100344438A CN201310034443A CN103075581A CN 103075581 A CN103075581 A CN 103075581A CN 2013100344438 A CN2013100344438 A CN 2013100344438A CN 201310034443 A CN201310034443 A CN 201310034443A CN 103075581 A CN103075581 A CN 103075581A
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- B29C47/92—
Abstract
The invention discloses a three-layer pipe and a manufacture method thereof. A stainless steel band is made into a stainless steel pipe which serves as a first inner pipe; PP (Propylene Polymer) resin and master batch are mixed and then extruded by an extruder, and the extruded resin is molded under pressure and attached onto the first inner pipe, so that an inner pipe is manufactured; aluminum alloy is made into an aluminum alloy pipe which serves as an outer pipe; and the inner pipe manufactured in step 2 is inserted into the outer pipe, and the inner pipe and the outer pipe are combined tightly through rolling molding, so that the three-layer pipe is manufactured. According to the invention, a second inner pipe is plastic, so that the weight of the entire pipe can be reduced; the outer pipe is made of the aluminum alloy, so that the strength and abrasion resistance of the pipe can be enhanced, and the service life of the pipe can be prolonged; the first inner pipe is made of stainless steel so as to prevent a toxic substance, namely plasticizer, in the second inner pipe from leaking and prevent the pipe from being influenced in performance due to heat expansion and cold contraction of the second inner pipe; and the three-layer pipe can reach medical and food hygiene levels, and can be applied to medical and food industries.
Description
Technical field
The present invention relates to a kind of pipe fitting of carrying for fluid, the three layers of pipe that is specifically related to that a kind of tubing fit by three layers of unlike material forms and manufacture method thereof.
Background technique
The material that the existing conveyance conduit that is used to fluid adopts is PE, PP, PVC plastic pipe, in order to strengthen the wear resistance of plastic pipe, a kind of " double-layer plastic tube " (application number is 201020143024.X) disclosed in 2010, this double-layer plastic tube body is comprised of outer tube and inner tube, outer field plastic cement outer tube has preferably wear-resisting resistance to pressure, can prolong the working life of plastic pipe.But along with further being taken seriously of safe and sanitary problem, if plastic cement products directly directly contacts with potable water or other fluid, may cause plasticizer in the plastic pipe to leak in the fluid and cause the safe and sanitary problem, and plastic cement products is subjected to the impact of temperature larger, easily expands with heat and contract with cold to cause plastic cement products distortion and affect the performance of plastic pipe.
Summary of the invention
In order to solve above-mentioned technical problem, the three layers of pipe that the invention provides that a kind of tubing by three layers of unlike material forms and manufacture method thereof, the pipe fitting of these three layers of pipes and fluid contact is stainless steel, has avoided plastic cement directly directly to contact with fluid, thereby has reached sanitary index.
The present invention takes following technological scheme:
Three layers of pipe are comprised of the first inner tube, the second inner and outer tubes, described the first inner tube, the second inner and outer tubes from the inside to the outside successively fit form; The material of described the first inner tube is stainless steel; Described the second inner tube is plastic cement; Described outer tube is aluminum alloy.
According to embodiments of the invention, preferably: described stainless steel is medical stainless steel.Three layers of pipe that the first inner tube adopts medical stainless steel to make can reach the medical sanitary rank, can be used as medical equipment and use.
Further technological scheme is: the thickness of described the first inner tube, second each layer of inner and outer tubes tube wall is 3-10mm.
Further technological scheme is: described the second inner tube comprises the component of following weight parts: PP resin 80-90 part, 2 parts of looks female.
The invention also discloses the manufacture method of three layers of pipe, this manufacture method may further comprise the steps:
Step 1: Stainless Steel Band is made Stainless Steel Tube, and described Stainless Steel Tube is the first inner tube;
Step 2: with 2 parts of PP resin 80-90 part, looks female, 70-80 ℃ of lower the mixing, extrude through extruder, the resin of extruding is attached on the first inner tube by pressure forming, namely makes the inner tube that is coated the first inner tube by the second inner tube;
Step 3: aluminum alloy is made Al-alloy pipe, and described Al-alloy pipe is outer tube, and the inner tube that step 2 makes is inserted in the outer tube, makes between outer tube and the inner tube and combines closely, and by roller-compaction, inner and outer tubes is combined closely, and namely makes three layers of pipe.
Further technological scheme is: the parameter of described extruder is as follows: the temperature of each section is 200 ℃ of first paragraphs, 210 ℃ of second segments, the 3rd section 220 ℃; Extruded velocity is 40r/min; Pull-in time is 12 seconds.
Further technological scheme is: the pressure 90MPa of described pressure forming.
The invention has the beneficial effects as follows: 1) the second inner tube of three layers of pipe is plastics, can alleviate the quality of whole tubing, can save cost simultaneously; Outer tube is aluminum alloy, can strengthen the intensity of tubing and increase wear resistance, prolongs the working life of tubing; 2) three layers of pipe is set up stainless steel in the second inner tube first inner tube, can prevent the reaction of plastic the second inner tube and fluid contact and toxic substance plasticizer seepage in the plastics occur, also can prevent that plastic the second inner tube from expanding with heat and contract with cold and affect the performance of tubing simultaneously; 3) the first inner tube of three layers of pipe is set to medical stainless steel, and medical, food sanitation rank that the health rank can reach can be used for medical industry and food service industry; 4) simple in structure, cost is low, and quality is light, and intensity and wear resistance are good, long service life, environmental protection sanitary.5) material of each layer of three layers of pipe is simple, and cost is low, and the processing technology of three layers of pipe is simple.
Description of drawings
Fig. 1 is the structural representation of three layers of pipe of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 shows the schematic diagram of three layers of pipe of the present invention, as can be seen from the figure, three layers of pipe by the first inner tube 1, the second inner tube 2 and outer tube 3 from the inside to the outside fit form.According to embodiments of the invention, described the first inner tube 1 material is stainless steel; Preferably, the material of the first inner tube 1 is medical stainless steel.According to one embodiment of present invention, described the second inner tube 2 adopts plastic cement materials.According to embodiments of the invention, described outer tube 3 is aluminum alloy material.According to embodiments of the invention, the thickness of the tube wall of the first inner tube, the second inner tube or outer tube is 3-10mm.
Embodiment 1:
The manufacture method of three layers of pipe is as follows:
Step 1: Stainless Steel Band is made Stainless Steel Tube, and described Stainless Steel Tube is the first inner tube.
Step 2: with 2 parts of PP resin 80-90 part, looks female, 70-80 ℃ of lower the mixing, extrude through extruder, the parameter of extruder is as follows: the temperature of each section is 200 ℃ of first paragraphs, 210 ℃ of second segments, the 3rd section 220 ℃; Extruded velocity is 40r/min; Pull-in time is 12 seconds.The resin of extruding is attached on the first inner tube by pressure forming, and the pressure of pressure forming is 90MPa, namely makes the inner tube that is coated the first inner tube by the second inner tube.
Step 3: aluminum alloy is made Al-alloy pipe, and described Al-alloy pipe is outer tube, and the inner tube that step 2 makes is inserted in the outer tube, makes between outer tube and the inner tube to connect closely, by roller-compaction, inner and outer tubes is combined closely, and namely makes three layers of pipe.
" embodiment " who speaks of in this manual, " another embodiment ", " embodiment " etc., the specific features, structure or the characteristics that refer in conjunction with this embodiment's description are included among at least one embodiment of the application's generality description.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in specification.Furthermore, when describing a specific features, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiments this feature, structure or characteristics also fall within the scope of the invention.
Although invention has been described with reference to a plurality of explanatory embodiments of the present invention here, but, should be appreciated that, those skilled in the art can design a lot of other modification and mode of executions, and these are revised and mode of execution will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to constituent elements and/or the layout of subject combination layout.Except modification that constituent elements and/or layout are carried out with improving, to those skilled in the art, other purposes also will be obvious.
Claims (7)
1. three layers of pipe are comprised of the first inner tube, the second inner and outer tubes, it is characterized in that: described the first inner tube, the second inner and outer tubes from the inside to the outside fit form; Described the first inner tube is stainless steel; Described the second inner tube is plastic cement; Described outer tube is aluminum alloy.
2. three layers of pipe according to claim 1 is characterized in that described stainless steel is medical stainless steel.
3. three layers of pipe according to claim 1, the thickness that it is characterized in that the tube wall of described the first inner tube, the second inner tube or outer tube is 3-10mm.
4. three layers of pipe according to claim 1 is characterized in that described the second inner tube comprises the component of following weight parts: PP resin 80-90 part, 2 parts of looks female.
5. the manufacture method of the described three layers of pipe of any one according to claim 1-4 is characterized in that may further comprise the steps:
Step 1: Stainless Steel Band is made Stainless Steel Tube, and described Stainless Steel Tube is the first inner tube;
Step 2: PP resin, look mother 70-80 ℃ of lower the mixing, are extruded through extruder, and the resin of extruding is attached on the first inner tube by pressure forming, namely makes the inner tube that is coated the first inner tube by the second inner tube;
Step 3: aluminum alloy is made Al-alloy pipe, and described Al-alloy pipe is outer tube, and the inner tube that step 2 makes is inserted in the outer tube, by roller-compaction, inner and outer tubes is combined closely, and namely makes three layers of pipe.
6. the manufacture method of three layers of pipe according to claim 5, it is characterized in that the parameter of described extruder is as follows: the temperature of each section is 200 ℃ of first paragraphs, 210 ℃ of second segments, the 3rd section 220 ℃; Extruded velocity is 40r/min; Pull-in time is 12 seconds.
7. the manufacture method of three layers of pipe according to claim 5 is characterized in that the pressure 90MPa of described pressure forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100344438A CN103075581A (en) | 2013-01-29 | 2013-01-29 | Three-layer pipe and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100344438A CN103075581A (en) | 2013-01-29 | 2013-01-29 | Three-layer pipe and manufacture method thereof |
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| CN103075581A true CN103075581A (en) | 2013-05-01 |
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| CN2013100344438A Pending CN103075581A (en) | 2013-01-29 | 2013-01-29 | Three-layer pipe and manufacture method thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1210779A (en) * | 1968-10-01 | 1970-10-28 | Kabel Metallwerke Ghh | Method of manufacturing a pipe |
| JPH01261588A (en) * | 1988-04-11 | 1989-10-18 | Fujimori Kogyo Kk | Fire retardant duct |
| CN2428665Y (en) * | 2000-02-22 | 2001-05-02 | 高波杰 | Stainless-steel aluminium-plastic composite tube |
| CN1294969A (en) * | 2000-11-14 | 2001-05-16 | 胶州市绿华塑料机械有限公司 | Manufacture of composite aluminium-plastic pipe and aluminium pipe orienting and fitting unit |
| CN1294948A (en) * | 1999-11-06 | 2001-05-16 | 马林远 | Production process of composite aluminium-plastic pipe and its special pipe drawing machine |
| CN1342549A (en) * | 2001-09-26 | 2002-04-03 | 周锡明 | Technology for making seamless composite Al-plastic pipe |
| CN2489162Y (en) * | 2001-08-14 | 2002-05-01 | 项慈峰 | Composite water pipe |
| CN102336966A (en) * | 2011-08-17 | 2012-02-01 | 安徽广德金鹏科技发展有限公司 | Noise-damping pipe |
| CN203036108U (en) * | 2013-01-29 | 2013-07-03 | 四川辉利达塑胶科技有限公司 | Three-layer pipe |
-
2013
- 2013-01-29 CN CN2013100344438A patent/CN103075581A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1210779A (en) * | 1968-10-01 | 1970-10-28 | Kabel Metallwerke Ghh | Method of manufacturing a pipe |
| JPH01261588A (en) * | 1988-04-11 | 1989-10-18 | Fujimori Kogyo Kk | Fire retardant duct |
| CN1294948A (en) * | 1999-11-06 | 2001-05-16 | 马林远 | Production process of composite aluminium-plastic pipe and its special pipe drawing machine |
| CN2428665Y (en) * | 2000-02-22 | 2001-05-02 | 高波杰 | Stainless-steel aluminium-plastic composite tube |
| CN1294969A (en) * | 2000-11-14 | 2001-05-16 | 胶州市绿华塑料机械有限公司 | Manufacture of composite aluminium-plastic pipe and aluminium pipe orienting and fitting unit |
| CN2489162Y (en) * | 2001-08-14 | 2002-05-01 | 项慈峰 | Composite water pipe |
| CN1342549A (en) * | 2001-09-26 | 2002-04-03 | 周锡明 | Technology for making seamless composite Al-plastic pipe |
| CN102336966A (en) * | 2011-08-17 | 2012-02-01 | 安徽广德金鹏科技发展有限公司 | Noise-damping pipe |
| CN203036108U (en) * | 2013-01-29 | 2013-07-03 | 四川辉利达塑胶科技有限公司 | Three-layer pipe |
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Application publication date: 20130501 |