CN210372359U - PVC-U thermal insulation pipe for water supply - Google Patents
PVC-U thermal insulation pipe for water supply Download PDFInfo
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- CN210372359U CN210372359U CN201921118191.6U CN201921118191U CN210372359U CN 210372359 U CN210372359 U CN 210372359U CN 201921118191 U CN201921118191 U CN 201921118191U CN 210372359 U CN210372359 U CN 210372359U
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- 238000009413 insulation Methods 0.000 title claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 14
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 11
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 10
- -1 polyethylene Polymers 0.000 claims abstract description 6
- 239000004698 Polyethylene Substances 0.000 claims abstract description 5
- 229920000573 polyethylene Polymers 0.000 claims abstract description 5
- 239000006261 foam material Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 abstract description 22
- 239000000463 material Substances 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005253 cladding Methods 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005034 decoration Methods 0.000 description 4
- 239000012774 insulation material Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000032683 aging 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
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001125 extrusion Methods 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
- 238000007689 inspection Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model discloses a PVC-U insulating tube is used to feedwater, including the inlayer pipe, heat preservation and outer pipe, the heat preservation sets up between outer pipe and inlayer pipe, the inlayer pipe includes inner wall and outer wall, the heat preservation cladding is on inlayer outside of tubes wall, the inlayer pipe is stereoplasm polyvinyl chloride, the heat preservation is polyethylene expanded material, the outer pipe is stereoplasm polyvinyl chloride, the inlayer pipe includes first section and second section at least, be provided with first recess on the outer wall of first section, be provided with the second recess on the outer wall of second section, first recess and second recess all extend to the axis direction that is on a parallel with the inlayer pipe, first recess and a second recess do not communicate each other. The first groove and the second groove are arranged on the outer wall of the inner-layer pipe, so that the contact area between the inner-layer pipe and the heat-insulating layer is increased, the inner-layer pipe has a better fixing effect in the circumferential direction and the axial direction, the structure is more stable, and the heat-insulating layer and the inner-layer pipe are bonded more firmly.
Description
Technical Field
The utility model relates to the technical field of pipes, concretely relates to PVC-U insulating tube is used in feedwater.
Background
The PVC-U pipeline is produced with sanitary polyvinyl chloride (PVC) resin as main material and proper amount of stabilizer, lubricant, stuffing, coloring agent, etc. and through extrusion in plastic extruder, injection in injection molding machine, cooling, solidification, setting, inspection, packing and other steps. Excellent physical and chemical properties, chemical corrosion resistance, high impact strength, small fluid resistance, 30% higher flow rate than that of cast iron pipe with the same caliber, ageing resistance and long service life, and is an ideal material for building water supply and drainage.
The manufacturing process of the PVC-U heat preservation pipe generally comprises the steps of firstly extruding a PVC-U inner pipe material through an extruder to obtain a pipe fitting inner layer pipe, then sending the PVC-U heat preservation material into an injection molding machine, extruding the PVC-U heat preservation material on the outer wall of the pipe fitting inner layer to obtain a pipe fitting heat preservation layer, and finally coating the outer layer on the outer wall of the heat preservation layer in the same method. According to the existing three-layer PVC-U thermal insulation pipe, thermal insulation materials are extruded on the outer wall of the inner pipe of the pipe, and due to the fact that the thermal insulation materials are in contact with smooth surfaces, the outer wall of the inner pipe of the pipe has poor holding effect on the thermal insulation materials, and the structure of the thermal insulation pipe is unstable.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims to solve the problem of providing a PVC-U insulating tube for feedwater for the contact surface between inlayer pipe and the heat preservation is bigger, and axial and circumferential holding effect is better, and its structure is more stable, bonds more firmly between heat preservation and the inlayer pipe.
The utility model discloses an above-mentioned technical problem is solved to following technical means: the utility model provides a pair of PVC-U insulating tube for feedwater, including inlayer pipe, heat preservation and outer pipe, the heat preservation sets up between outer pipe and inlayer pipe, the inlayer pipe includes inner wall and outer wall, the heat preservation cladding is on inlayer pipe outer wall, the inlayer pipe is stereoplasm polyvinyl chloride, the heat preservation is polyethylene expanded material, outer pipe is stereoplasm polyvinyl chloride, the inlayer pipe includes first section and second section at least, be provided with first recess on the outer wall of first section, be provided with the second recess on the outer wall of second section, first recess and second recess all to be on a parallel with the axis direction of inlayer pipe extends, first recess does not communicate with arbitrary one second recess each other, so as form two sections recesses of cutting apart on the inlayer pipe outer wall.
Further, the first grooves are arranged in a plurality of numbers, the first grooves are arranged along the circumferential direction of the inner-layer pipe at intervals, the second grooves are also arranged in a plurality of numbers, and the second grooves are also arranged along the circumferential direction of the inner-layer pipe at intervals.
Furthermore, the second grooves correspond to the first grooves one to one, and the angle deviation between any one of the first grooves and the corresponding second groove on the circumference of the outer wall of the inner-layer pipe is the same.
Further, still be provided with a plurality of first archs on the inner wall of first section, be provided with a plurality of second archs on the inner wall of second section, first arch and second arch are used for compensating the wall thickness of first recess and second recess position respectively.
Furthermore, the first bulges are in one-to-one correspondence with the first grooves, the corresponding size of the first bulges is larger than or equal to that of the first grooves, the second bulges are in one-to-one correspondence with the second grooves, and the corresponding size of the second bulges is larger than or equal to that of the second grooves.
Furthermore, the inner wall of the inner layer pipe and the outer wall of the inner layer pipe are eccentrically arranged, so that a first wall thickness section and a second wall thickness section with different sizes are formed on the same cross section of the inner layer pipe, the size is continuously gradually changed from the first wall thickness section to the second wall thickness section, and then the size is gradually changed from the second wall thickness section to the first wall thickness section.
Further, the first wall thickness section is the position with the smallest wall thickness of the inner-layer pipe, the second wall thickness section is the position with the largest wall thickness of the inner-layer pipe, the cross-sectional size of the first groove which is closer to the first wall thickness section is smaller, and the cross-sectional size of each group of corresponding first grooves is the same as that of each group of corresponding second grooves.
Further, the first groove and the second groove are smooth curved surfaces, and the first protrusion and the second protrusion are also smooth curved surfaces.
According to the above technical scheme, the beneficial effects of the utility model are that: the utility model provides a pair of PVC-U insulating tube for feedwater, including inlayer pipe, heat preservation and outer pipe, the heat preservation sets up between outer pipe and inlayer pipe, the inlayer pipe includes inner wall and outer wall, the heat preservation cladding is on inlayer pipe outer wall, the inlayer pipe is stereoplasm polyvinyl chloride, the heat preservation is polyethylene expanded material, outer pipe is stereoplasm polyvinyl chloride, the inlayer pipe includes first section and second section at least, be provided with first recess on the outer wall of first section, be provided with the second recess on the outer wall of second section, first recess and second recess all to be on a parallel with the axis direction of inlayer pipe extends, first recess does not communicate with a second recess each other, so as to form two sections recesses of cutting apart on the inlayer pipe outer wall. The contact area between the inner-layer pipe and the heat-insulating layer is increased by arranging the first groove and the second groove on the outer wall of the inner-layer pipe, so that the inner-layer pipe is more stable in the circumferential direction and is not easy to separate. And the first groove and the second groove are not communicated, so that the first groove and the second groove have better fixing function in the axial direction, the structure is more stable, and the bonding between the heat-insulating layer and the inner-layer pipe is firmer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a cross-sectional view of a PVC-U thermal insulation pipe for water supply according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken at the location B-B of FIG. 1;
FIG. 3 is a three-dimensional structure diagram of an inner layer pipe of a PVC-U thermal insulation pipe for water supply according to an embodiment of the present invention;
FIG. 4 is a three-dimensional structure diagram of an inner layer pipe of a PVC-U thermal insulation pipe for water supply according to another embodiment of the present invention;
FIG. 5 is a cross-sectional view of FIG. 4;
FIG. 6 is a cross-sectional view taken at location A-A of FIG. 4;
FIG. 7 is a sectional view of the inner tube mold used in the first embodiment;
figure 8 is a cross-sectional view of an inner layer tube mold used in the second embodiment.
Reference numerals:
1-inner layer tube; 2-insulating layer; 3-outer layer tube; 4-mandrel; 5-outer cylinder; 6-clearance; 11-inner wall; 12-an outer wall; 13-first stage; 14-a second segment; 15-a first wall thickness section; 16-a second wall thickness section; 17-a third stage; 18-fourth stage; 51-protrusion; 41-notch; 131-a first protrusion; 132 — a first groove; 141-a second projection; 142-a second groove; 171-a third projection; 172-third groove; 181-fourth bump; 182-fourth groove.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the description of the application, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
Referring to fig. 1-8, the PVC-U thermal insulation pipe for water supply provided in this embodiment includes an inner pipe 1, a thermal insulation layer 2, and an outer pipe 3, the thermal insulation layer 2 is disposed between the outer pipe 3 and the inner pipe 1, the inner pipe 1 includes an inner wall 11 and an outer wall 12, the thermal insulation layer 2 covers the outer wall 12 of the inner pipe 1, the inner pipe 1 is made of rigid polyvinyl chloride, the thermal insulation layer 2 is made of polyethylene foam material, the outer pipe 3 is made of rigid polyvinyl chloride, the inner pipe 1 at least includes a first section 13 and a second section 14, a first groove 132 is disposed on the outer wall 12 of the first section 13, a second groove 142 is disposed on the outer wall 12 of the second section 14, the first groove 132 and the second groove 142 both extend in a direction parallel to an axis direction of the inner pipe 1 and are integrally injection-molded with the inner pipe 1, the first groove 132 is not communicated with any one of the second grooves 142, so as to form two divided grooves on the outer wall 12 of the inner tube 1. The first grooves 132 and the second grooves 142 are arranged on the outer wall 12 of the inner-layer pipe 1, so that the contact area between the inner-layer pipe 1 and the heat-insulating layer 2 is increased, the inner-layer pipe has a better holding effect in the circumferential direction, and the inner-layer pipe is more stable in structure and is not easy to separate. And the first groove 132 and the second groove 142 are not communicated with each other to form two divided grooves in the axial direction, so that the inner-layer pipe 1 and the heat-insulating layer 2 have better holding effect in the axial direction, and finally, the inner-layer pipe 1 and the heat-insulating layer 2 are bonded more firmly.
As a further improvement to the above technical solution, a plurality of first grooves 132 are provided at intervals along the circumferential direction of the inner tube 1, a plurality of second grooves 142 are also provided, and a plurality of second grooves 142 are also provided at intervals along the circumferential direction of the inner tube 1. The plurality of first grooves 132 and the plurality of second grooves 142 are arranged at intervals in the circumferential direction of the inner-layer pipe 1, so that the contact area between the heat-insulating layer 2 and the inner-layer pipe 1 is further increased, and the holding effect is enhanced. As a further improvement to the above technical solution, the second grooves 142 correspond to the first grooves 132 one to one, and the angular deviations between any one of the first grooves 132 and its corresponding second groove 142 are the same on the circumference of the outer wall 12 of the inner tube 1. The second section 14 is of the same construction as the first section 13, the second section 14 being angularly rotated on the inner pipe 1 relative to the first section 13.
As a further improvement to the above technical solution, the inner wall 11 of the first section 13 is further provided with a plurality of first protrusions 131, the inner wall 11 of the second section 14 is provided with a plurality of second protrusions 141, and the first protrusions 131 and the second protrusions 141 are respectively used for compensating the wall thickness of the positions of the first grooves 132 and the second grooves 142. The first and second protrusions 131 and 141 corresponding to the first and second grooves 132 and 142, respectively, are provided on the inner wall 11 to compensate for the reduced wall thickness due to the provision of the grooves, thereby allowing the inner pipe 1 to be used with a suitable wall thickness.
As a further improvement to the above technical solution, the first protrusions 131 correspond to the first grooves 132 one by one, the size of the corresponding first protrusions 131 is greater than or equal to the size of the first grooves 132, the second protrusions 141 correspond to the second grooves 142 one by one, and the size of the corresponding second protrusions 141 is greater than or equal to the size of the second grooves 142. As shown in fig. 3 and 4, the corresponding third segment 17 and fourth segment 18 are the same in structure as the first segment 13 and second segment 14, the first segment 13, second segment 14, third segment 17 and fourth segment 18 are sequentially arranged in the axial direction of the inner tube 1, sequentially rotate at the same angle relative to the previous segment in the circumferential direction, and repeatedly and alternately rotate in a spiral ascending manner in the circumferential direction for circulation, and finally form a circular step shape rotating around the outer wall 12 of the inner tube 1. As shown in fig. 3, the outer wall 12 of the inner tube 1 further includes a third section 18 and a fourth section 18 along the axial direction, the third section 17 is provided with a third groove 172 and a third protrusion 171, the fourth section 18 is provided with a fourth groove 182 and a fourth protrusion 181, the first groove 132, the second groove 142, the third groove and the fourth groove are sequentially arranged in the axial direction of the inner tube 1, and sequentially rotate at the same angle in the circumferential direction of the outer wall 12 of the inner tube 1, and rotate and circulate in a spiral ascending manner in the circumferential direction, so that a circular step shape rotating around the outer wall 12 of the inner tube 1 is formed.
As a further improvement to the above technical solution, the first groove 132 and the second groove 142 are smooth curved surfaces, and the first protrusion 131 and the second protrusion 141 are also smooth curved surfaces.
In the second embodiment, the inner wall 11 of the inner-layer pipe 1 and the outer wall 12 of the inner-layer pipe 1 are eccentrically arranged, so that a first wall thickness section 15 and a second wall thickness section 16 with different sizes are formed on the same cross section of the inner-layer pipe 1, the size is continuously gradually changed from the first wall thickness section 15 to the second wall thickness section 16, and then the size is gradually changed from the second wall thickness section 16 to the first wall thickness section 15. As shown in fig. 6 and 4, the inner wall 11 and the outer wall 12 of the inner tube 1 are eccentrically arranged, so that during rotation, the outer walls of the first section 13, the second section 14, the third section 17 and the fourth section 18 respectively form steps at the boundary positions to enhance the holding effect in the axial direction.
As a further improvement to the above technical solution, the first wall thickness section 15 is a position where the wall thickness of the inner tube 1 is the minimum, the second wall thickness section 16 is a position where the wall thickness of the inner tube 1 is the maximum, the smaller the cross-sectional dimension of the first groove 132 closer to the first wall thickness section 15, the smaller the cross-sectional dimension of each group of the corresponding first groove 132 and second groove 142 is. As shown in fig. 6, the groove near the position where the wall thickness is small is made small, preventing the groove from breaking the wall thickness of the inner pipe 1.
Based on the PVC-U thermal insulation pipe special for home decoration provided in the embodiment, the application also provides production equipment for the inner layer pipe 1 of the PVC-U thermal insulation pipe special for home decoration, and the production equipment can be used for producing the PVC-U thermal insulation pipe special for home decoration in the embodiment. Specifically, the production equipment comprises a mandrel 4 and an outer cylinder 5, the outer cylinder 5 and the mandrel 4 are arranged eccentrically as shown in FIG. 8 or not as shown in FIG. 7 according to needs, a gap 6 is formed between the mandrel 4 and the outer cylinder 5, and the material of the inner layer pipe 1 is extruded from the gap 6 to form the inner layer pipe 1. The outer cylinder 5 and the mandrel 4 can synchronously rotate around the axis of the mandrel 4, at least one protrusion 51 is arranged on the inner wall 11 of the outer cylinder 5, and a notch 41 corresponding to the protrusion 51 is arranged on the outer wall 12 of the mandrel 4. When the production equipment is used, the mandrel 4 and the sleeve synchronously rotate at intervals, namely the mandrel and the sleeve do not rotate when the equipment extrudes materials, after a certain length is extruded, the length can be set to be 1m, and the outer cylinder 5 and the mandrel 4 rotate by a certain angle which can be set to be 22.5 degrees; then, the outer cylinder 5 and the mandrel 4 are stopped, and the material is continuously extruded, so that the cycle is finished to obtain the inner layer pipe 1 shown in fig. 3 and 4, wherein the outer cylinder 5 and the mandrel 4 are synchronous at any time, and the notch 41 and the protrusion 51 are corresponding at any time. The method comprises the steps of forming a first section 13 on the surface of the outer wall 12 of an inner layer pipe 1 by using the material of the inner layer pipe 1 extruded from a notch 41, continuously extruding the material of the inner layer pipe 1 by rotating an outer cylinder 5 and a mandrel 4 at an angle to form a second section 14, repeating the operation to form a third section 17 and a fourth section 18, repeatedly circulating the operation to form the complete inner layer pipe 1, melting the material of a heat preservation layer 2, then injecting the melted material onto the outer wall 12 of the inner layer pipe 1, and finally injecting the material of an outer layer pipe 3 onto the surface of the outer wall 12 of the heat preservation layer 2 to obtain the special PVC-U heat preservation pipe for home decoration.
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 substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (8)
1. The utility model provides a PVC-U insulating tube for feedwater which characterized in that: the heat-insulating pipe comprises an inner layer pipe (1), a heat-insulating layer (2) and an outer layer pipe (3), wherein the heat-insulating layer (2) is arranged between the outer layer pipe (3) and the inner layer pipe (1), the inner layer pipe (1) comprises an inner wall (11) and an outer wall (12), the heat-insulating layer (2) is coated on the outer wall (12) of the inner layer pipe (1), the inner layer pipe (1) is made of rigid polyvinyl chloride, the heat-insulating layer (2) is made of polyethylene foam material, the outer layer pipe (3) is made of rigid polyvinyl chloride, the inner layer pipe (1) at least comprises a first section (13) and a second section (14), a first groove (132) is formed in the outer wall (12) of the first section (13), a second groove (142) is formed in the outer wall (12) of the second section (14), and the first groove (132) and the second groove (142) both extend in the direction parallel to the axis direction of the inner layer pipe (1), the first groove (132) is not communicated with any one of the second grooves (142) so as to form two divided grooves on the outer wall (12) of the inner-layer pipe (1).
2. The PVC-U thermal insulation pipe for water supply according to claim 1, characterized in that: the first grooves (132) are arranged in a plurality, the first grooves (132) are arranged at intervals in the circumferential direction of the inner-layer pipe (1), the second grooves (142) are also arranged in a plurality, and the second grooves (142) are also arranged at intervals in the circumferential direction of the inner-layer pipe (1).
3. The PVC-U thermal insulating pipe for water supply according to claim 2, characterized in that: the second grooves (142) correspond to the first grooves (132) one by one, and the angle deviation between any one of the first grooves (132) and the corresponding second groove (142) on the circumference of the outer wall (12) of the inner-layer pipe (1) is the same.
4. The PVC-U thermal insulation pipe for water supply according to claim 3, characterized in that: the inner wall (11) of the first section (13) is further provided with a plurality of first protrusions (131), the inner wall (11) of the second section (14) is provided with a plurality of second protrusions (141), and the first protrusions (131) and the second protrusions (141) are respectively used for compensating the wall thickness of the positions of the first grooves (132) and the second grooves (142).
5. The PVC-U thermal insulation pipe for water supply according to claim 4, characterized in that: the first bulges (131) correspond to the first grooves (132) one by one, the sizes of the corresponding first bulges (131) are larger than or equal to the sizes of the first grooves (132), the second bulges (141) correspond to the second grooves (142) one by one, and the sizes of the corresponding second bulges (141) are larger than or equal to the sizes of the second grooves (142).
6. The PVC-U thermal insulation pipe for water supply according to claim 5, characterized in that: the inner wall (11) of the inner-layer pipe (1) and the outer wall (12) of the inner-layer pipe (1) are eccentrically arranged, so that a first wall thickness section (15) and a second wall thickness section (16) with different sizes are formed on the same cross section of the inner-layer pipe (1), the size is continuously gradually changed from the first wall thickness section (15) to the second wall thickness section (16), and then the size is gradually changed from the second wall thickness section (16) to the first wall thickness section (15).
7. The PVC-U thermal insulation pipe for water supply according to claim 6, characterized in that: the first wall thickness section (15) is the position with the minimum wall thickness of the inner-layer pipe (1), the second wall thickness section (16) is the position with the maximum wall thickness of the inner-layer pipe (1), the section size of the first grooves (132) which are closer to the first wall thickness section (15) is smaller, and the section size of each group of corresponding first grooves (132) is the same as that of the second grooves (142).
8. The PVC-U thermal insulation pipe for water supply according to any one of claims 4 to 7, characterized in that: the first groove (132) and the second groove (142) are smooth curved surfaces, and the first protrusion (131) and the second protrusion (141) are also smooth curved surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921118191.6U CN210372359U (en) | 2019-07-17 | 2019-07-17 | PVC-U thermal insulation pipe for water supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921118191.6U CN210372359U (en) | 2019-07-17 | 2019-07-17 | PVC-U thermal insulation pipe for water supply |
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| Publication Number | Publication Date |
|---|---|
| CN210372359U true CN210372359U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921118191.6U Active CN210372359U (en) | 2019-07-17 | 2019-07-17 | PVC-U thermal insulation pipe for water supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112549140A (en) * | 2020-12-02 | 2021-03-26 | 天津长鑫亿讯科技有限责任公司 | High-toughness PE pipe and processing method and processing system thereof |
-
2019
- 2019-07-17 CN CN201921118191.6U patent/CN210372359U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112549140A (en) * | 2020-12-02 | 2021-03-26 | 天津长鑫亿讯科技有限责任公司 | High-toughness PE pipe and processing method and processing system thereof |
| CN112549140B (en) * | 2020-12-02 | 2023-01-10 | 辽宁江丰保温材料有限公司 | High-toughness PE pipe and processing method and processing system thereof |
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Effective date of registration: 20240401 Address after: 342599 On the northwest side of the intersection of Weiyi Road and Jingyi Road in the Economic Development Zone of Ganzhou City, Jiangxi Province Patentee after: Jiangxi Yuancai Pipeline Technology Co.,Ltd. Country or region after: China Address before: 405200 No. 345, Zhufeng Road, Shuanggui street, Liangping District, Chongqing Patentee before: CHONGQING LICAI PIPELINE CO.,LTD. Country or region before: China |