CN220851073U - Phosphogypsum modified high-density polyethylene buried drain pipe - Google Patents
Phosphogypsum modified high-density polyethylene buried drain pipe Download PDFInfo
- Publication number
- CN220851073U CN220851073U CN202322663292.4U CN202322663292U CN220851073U CN 220851073 U CN220851073 U CN 220851073U CN 202322663292 U CN202322663292 U CN 202322663292U CN 220851073 U CN220851073 U CN 220851073U
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- CN
- China
- Prior art keywords
- drain pipe
- density polyethylene
- modified high
- phosphogypsum
- structural layer
- Prior art date
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- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 title claims abstract description 34
- 229920001903 high density polyethylene Polymers 0.000 title claims abstract description 25
- 239000004700 high-density polyethylene Substances 0.000 title claims abstract description 25
- 239000010410 layer Substances 0.000 claims abstract description 62
- 239000011241 protective layer Substances 0.000 claims abstract description 11
- 239000004698 Polyethylene Substances 0.000 claims abstract description 10
- 238000005260 corrosion Methods 0.000 claims description 24
- 230000007797 corrosion Effects 0.000 claims description 23
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 8
- 239000002131 composite material Substances 0.000 abstract description 6
- 239000004408 titanium dioxide Substances 0.000 abstract description 5
- 239000002344 surface layer Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 229920000573 polyethylene Polymers 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 7
- 229910052791 calcium Inorganic materials 0.000 description 7
- 239000011575 calcium Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 238000010257 thawing Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- -1 Polyethylene Polymers 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910021654 trace metal Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000001038 titanium pigment Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The application relates to the technical field of buried drain pipes, and particularly discloses an phosphogypsum modified high-density polyethylene buried drain pipe. The structure of the phosphogypsum modified high-density polyethylene composite material comprises a structural layer, wherein the structural layer is of a circular ring structure of phosphogypsum modified high-density polyethylene, and a protective layer made of pure PE material for wrapping the structural layer is arranged on the outer circumference of the structural layer. The structural layer is utilized to solve the technical problems that the flexibility of a pipeline is reduced due to the fact that titanium dioxide is added to the surface layer of the drain pipe in the prior art, the pipeline becomes brittle, and the average service life of the drain pipe is shortened due to tiny cracks which are easy to generate during construction.
Description
Technical Field
The utility model relates to the technical field of buried drain pipes, in particular to an phosphogypsum modified high-density polyethylene buried drain pipe.
Background
The buried drain pipe is mainly used for drainage, and is generally produced by adopting plastic modified composite materials (including pe, pp, pvc and other modified composite materials), and the plastic modified composite materials have the performances of chemical stability, ageing resistance, environmental stress cracking resistance and the like, so that the drain pipe produced by the plastic modified composite materials belongs to a flexible pipe. 2. The construction cost is low, the plastic modified composite material buried drain pipe has light weight, convenient transportation and convenient construction, and can reduce the transportation and construction cost.
The application number is as follows: the patent document of CN201922370780.X discloses a PVC drain pipe with a two-layer structure, which comprises an outer layer and a corrosion resistant layer, wherein the outer layer and the corrosion resistant layer are combined together to form the PVC drain pipe with the two-layer structure, the outer layer is a coloring layer, the corrosion resistant layer is a structural layer, titanium dioxide is added in the outer layer structure, and the corrosion resistant layer uses variegated calcium carbonate powder, so that the cost of the PVC drain pipe can be greatly reduced under the condition of ensuring uniform color of a product.
Although the above patent document solves the problem that the color of the pipe product is not uniform by using the variegated calcium carbonate as the rigid additive, the fragility of the buried drain pipe is improved due to the use of the titanium pigment as the rigid material in the outer layer, the pipe becomes brittle, tiny cracks are generated after the buried drain pipe is crashed by broken stone in the process of carrying or construction, although the cracks directly lead to water leakage of the drain pipe, and the use of the buried drain pipe in the earlier stage is not influenced, the buried drain pipe needs to be used in the ground for decades, the pipeline is corroded more easily due to the progressive increase of time of the water in the soil through the cracks, some microorganisms are parasitic in the pipe, and some plant tiny roots stretch into the cracks to grow, and various reasons finally lead to the damage and water leakage of the buried drain pipe at the crack, so the pipe has to be replaced, and the average service life of the buried drain pipe is shortened.
Disclosure of utility model
The utility model aims to provide an phosphogypsum modified high-density polyethylene buried drain pipe, which is used for solving the technical problems that the flexibility of a pipeline ring is reduced due to the addition of titanium dioxide into the drain pipe, the pipeline becomes brittle, and the average service life of the pipeline is shortened due to tiny cracks which are easy to generate during construction.
In order to solve the problems, the technical scheme adopted by the utility model is as follows: the utility model provides a phosphogypsum modified high density polyethylene buries ground drain pipe, includes the structural layer, the structural layer is phosphogypsum modified high density polyethylene's ring structure, be equipped with the inoxidizing coating of the pure PE material of parcel structural layer on the structural layer outside circumference, be equipped with the corrosion resistant layer of covering structural layer on the structural layer inboard circumference, be equipped with a plurality of flexible crashproof nails on the inoxidizing coating.
The beneficial effects of this embodiment lie in:
1. In the prior art, in order to ensure uniform color of the product, titanium dioxide is used in the outer layer of the buried drain pipe, but the titanium dioxide can improve the ring rigidity of the material, so that the outer layer of the buried drain pipe becomes brittle, cracks are easily generated in the process of transportation and construction, and the whole service life of the buried drain pipe is shortened.
2. If pure PE is directly used for constructing a protective layer on an original high-density polyethylene buried drain pipe with calcium powder, the pipe body is thickened, the used materials are increased, and the number of pipelines which can be assembled by each truck is reduced due to the increase of the pipeline size during transportation, so that the raw material cost and the transportation cost of enterprises are increased;
3. According to the technical scheme, the phosphogypsum modified high-density polyethylene material is used as the structural layer, compared with calcium powder in the prior art, the phosphogypsum has better freeze-thawing resistance, the buried drain pipe is underground and has lower temperature, and a freeze-thawing cycle phenomenon is easy to occur, (the freeze-thawing cycle refers to the process that a structural body of a certain material is frozen in a low-temperature environment and then thaws in a high-temperature environment, and some materials have poor freeze-thawing resistance and are easy to generate cracks), so that an antifreezing agent is required to be added in the production process of the buried drain pipe so as to improve the freeze-thawing resistance of a pipeline, and after the phosphogypsum is used, the use of the antifreezing agent can be reduced, and the buried drain pipe is convenient to maintain in the later period;
4. Phosphogypsum is an industrial byproduct generated in the wet-process phosphoric acid production process, and is influenced by the sand washing of rainwater, so that partial impurities can be brought into groundwater or rivers, the pollution phenomenon of water quality can be possibly caused, the ecological environment can be seriously destroyed by random discharge and accumulation.
Further, the thickness of the structural layer is not less than 2.5mm.
Further, a corrosion resistant layer is arranged on the inner wall of the structural layer.
Further, the thickness of the protective layer is not less than 1.4mm.
Further, an inner supporting frame for supporting the joint of the drain pipe is arranged on the inner wall of the corrosion-resistant layer. The inner support frame is one set with the drain pipe, and when the construction, the interface department card of both ends drain pipe goes into inner support structure, provides holding power for the interface department, avoids the drain pipe of interface department because structural problem, produces deformation when covering the grit, and long-time deformation leads to the fact the drain pipe to damage.
Further, the inner support frame is provided with a center ring, and a grid is arranged on the center ring. When the grid makes the water flow through the inner supporting frame, the water is disturbed by the grid, so that particles in the water are prevented from being laminated at the interface.
Drawings
FIG. 1 is a schematic structural view of a structure without a corrosion resistant layer according to an embodiment of the present utility model,
FIG. 2 is a schematic view of a structure with a corrosion resistant layer according to an embodiment of the present utility model,
Figure 3 is a schematic view of the structure of the inner support frame of the drain pipe joint assembly according to the embodiment of the utility model,
Fig. 4 is a schematic structural view of an inner support frame according to an embodiment of the present utility model.
Detailed Description
The following is a further detailed description of the embodiments:
Reference numerals in the drawings of the specification include: the anti-collision device comprises a structural layer 1, an anti-corrosion layer 2, a protective layer 3, anti-collision nails 31, an inner support frame 4, a center ring 41, a grid 411, support legs 42 and support gaskets 421.
Examples are shown in fig. 1-4: the utility model provides a phosphogypsum modified high density polyethylene buries ground drain pipe, includes structural layer 1, structural layer 1 is phosphogypsum modified high density polyethylene's ring structure, and phosphogypsum is the industry accessory product that produces in the wet process phosphoric acid production process, in order to reduce the cost of burying ground drain pipe, has carried out quantitative composition analysis detection to phosphogypsum, shows in the detection that phosphogypsum major ingredient includes calcium oxide (35% -40%), sulfur trioxide (52% -56%), silica (2% -4%), still has some trace metal component, table below:
| Detecting items | Detection result | Detection basis |
| Mass fraction/% | 0.00056 | GB/T 14540-2003(3.7) |
| Mass fraction of lead (Pb)/(mg/kg) | 55.70 | GB/T 23349-2020(3.5) |
| Mass fraction of mercury (Hg)/(mg/kg) | 0.40 | NY/T 1978-2010(3) |
| Mass fraction of cadmium (Cd)/(mg/kg) | 9.56 | 23349-2020(3.3) |
| Mass fraction of arsenic (As)/(mg/kg) | 5.00 | NY/T 1978-2010(4.1) |
The phosphogypsum is greatly different from the traditional calcium powder in terms of components, the main component of the traditional calcium powder is calcium carbonate (more than 95%), and the phosphogypsum contains calcium oxide, silicon dioxide, sulfur trioxide and some metal components, the calcium oxide reacts with the sulfur trioxide to generate calcium sulfate, and the calcium sulfate can improve the toughness, flexural modulus and torsional modulus of the high-density polyethylene, improve the impact resistance and fatigue resistance, reduce the creep tendency and improve the heat change temperature and the dimensional stability; the silicon dioxide is added into the high-density polyethylene, so that the wear resistance, scratch resistance and chemical corrosion resistance of the high-density polyethylene can be improved, the surface quality and the processing performance of the high-density polyethylene are improved, and the trace metal components can also provide certain strength for the buried drain pipe, so that a better effect is generated under the synergistic effect of all components of phosphogypsum.
The buried drain pipe prepared by the calcium powder is detected and compared with the buried drain pipe prepared by phosphogypsum, (the product is detected according to national standard GB/T19472.1-2019 Polyethylene (PE) structural wall pipeline System part 1: polyethylene double-wall corrugated pipe).
The detection result is as follows: the results show that:
1. calcium powder detection data
2. Phosphogypsum detection data
The data shows that the buried drain pipe is prepared on the same process, and phosphogypsum is used to ensure that the ring stiffness of the buried drain pipe is higher than that of calcium powder, so that better strength is provided for the buried drain pipe, and soil and sand buried above the drain pipe can be better borne.
The outer circumference of the structural layer 1 is provided with the protective layer 3 made of pure PE material for wrapping the structural layer 1, and the protective layer 3 and the structural layer 1 are tightly welded by using a screw extruder, so that the detachment phenomenon can not occur. The thickness of the protective layer 3 is 1.5mm. The pure PE structure is arranged on the outer side of the structural layer 1, so that the annular flexibility of the drain pipe is improved by 5% -10%, tiny cracks are not easy to generate by collision and impact during laying and transportation, a plurality of anti-collision nails 31 are also arranged on the periphery of the protective layer 3, the anti-collision nails 31 are 0.22mm bulges, and the top ends of the anti-collision nails are arc structures; the stud 31 is also made of PE.
The inner wall of the structural layer 1 is tightly welded with the corrosion resistant layer 2, phosphogypsum adopted by the corrosion resistant layer 2 is finer, and the thickness of the corrosion resistant layer 2 is 1.4mm after 1000 meshes of modified high-density polyethylene material of phosphogypsum. Because phosphogypsum adopted by the corrosion resistant layer 2 is finer, the corrosion resistant layer 2 is smooth, and compared with a coarse corrosion resistant layer, when water flows through the drain pipe, impact friction is not easy to occur on the concave-convex surface of the corrosion resistant layer 2, so that the abrasion of the corrosion resistant layer 2 is small, and the service life of the drain pipe is longer.
When the drain pipe is constructed, the joint is formed by welding or laminating two sections of drain pipes, but the disconnected structure cannot uniformly spread the received force, and the disconnected structure enables the joint to deform more easily, so that the structure of the joint is not as stable as the middle part of the drain pipe, and the joint is clamped into the inner support frame 4 in the joint to provide a certain supporting force for the joint. So that the structure at the interface is more stable. The inner support structure 4 is shown in fig. 4, and is composed of a central ring 41 and four support legs 42, the central ring 41 is in a circular ring structure, a grille 411 is arranged at the center of the central ring, so that when water flows through the inner support structure 4, laminar flow at the center of the grille can be disturbed by the grille to form turbulence and vortex, the reynolds coefficient of the water is improved, particles in the water are disturbed by the water, the particles are not easy to adsorb on the corrosion resistant layer 2 of the drain pipe, elastic support gaskets 421 are arranged at the end parts of the support legs 42, the size of the circumference formed by the four support gaskets 421 is larger than the size of the corrosion resistant layer of the drain pipe, and the size of the circumference formed by the four support gaskets 421 after being extruded is smaller than the size of the corrosion resistant layer of the drain pipe, so that the inner support frame 4 can be clamped into the drain pipe.
The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (6)
1. The utility model provides a phosphogypsum modified high density polyethylene buries ground drain pipe, includes structural layer, its characterized in that: the structural layer is of a circular ring structure of phosphogypsum modified high-density polyethylene, a protective layer made of pure PE and wrapping the structural layer is arranged on the outer circumference of the structural layer, and a plurality of flexible anti-collision nails are arranged on the protective layer.
2. The phosphogypsum modified high density polyethylene buried drain pipe of claim 1, wherein: the thickness of the structural layer is not less than 2.5mm.
3. The phosphogypsum modified high density polyethylene buried drain pipe of claim 1, wherein: and a corrosion resistant layer is arranged on the inner wall of the structural layer.
4. The phosphogypsum modified high density polyethylene buried drain pipe of claim 1, wherein: the thickness of the protective layer is not less than 1.4mm.
5. The phosphogypsum modified high density polyethylene buried drain pipe of claim 3, further comprising: an inner supporting frame for supporting the joint of the drain pipe is arranged on the inner wall of the corrosion-resistant layer.
6. The phosphogypsum modified high density polyethylene buried drain pipe of claim 5, wherein: the inner support frame is provided with a center ring, and a grid is arranged on the center ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322663292.4U CN220851073U (en) | 2023-09-28 | 2023-09-28 | Phosphogypsum modified high-density polyethylene buried drain pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322663292.4U CN220851073U (en) | 2023-09-28 | 2023-09-28 | Phosphogypsum modified high-density polyethylene buried drain pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220851073U true CN220851073U (en) | 2024-04-26 |
Family
ID=90788903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322663292.4U Active CN220851073U (en) | 2023-09-28 | 2023-09-28 | Phosphogypsum modified high-density polyethylene buried drain pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220851073U (en) |
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- 2023-09-28 CN CN202322663292.4U patent/CN220851073U/en active Active
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