CN115094869A - Drainage plate for quickly flocculating suspended particles and manufacturing equipment and process method thereof - Google Patents
Drainage plate for quickly flocculating suspended particles and manufacturing equipment and process method thereof Download PDFInfo
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- CN115094869A CN115094869A CN202210813311.4A CN202210813311A CN115094869A CN 115094869 A CN115094869 A CN 115094869A CN 202210813311 A CN202210813311 A CN 202210813311A CN 115094869 A CN115094869 A CN 115094869A
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- alum solution
- compression roller
- alum
- woven fabric
- transfer
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000002245 particle Substances 0.000 title claims abstract description 15
- 230000003311 flocculating effect Effects 0.000 title abstract description 8
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 16
- 230000008595 infiltration Effects 0.000 claims abstract description 13
- 238000001764 infiltration Methods 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 229940037003 alum Drugs 0.000 claims description 96
- 239000000243 solution Substances 0.000 claims description 81
- 239000007921 spray Substances 0.000 claims description 63
- 230000006835 compression Effects 0.000 claims description 37
- 238000007906 compression Methods 0.000 claims description 37
- 238000002791 soaking Methods 0.000 claims description 24
- 238000005507 spraying Methods 0.000 claims description 12
- 238000005253 cladding Methods 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000012047 saturated solution Substances 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 238000005189 flocculation Methods 0.000 claims 1
- 230000016615 flocculation Effects 0.000 claims 1
- 239000008394 flocculating agent Substances 0.000 abstract description 8
- 239000013078 crystal Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 238000009736 wetting Methods 0.000 abstract 1
- 239000011259 mixed solution Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Structural Engineering (AREA)
- Water Supply & Treatment (AREA)
- Soil Sciences (AREA)
- Inorganic Chemistry (AREA)
- Agronomy & Crop Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Coating Apparatus (AREA)
Abstract
The invention relates to a drainage plate for quickly flocculating suspended particles and a manufacturing device and a process method thereof. A drainage plate for fast flocculating suspended particles is characterized in that flocculating agent crystal grains are inlaid among non-woven fabric fibers of a filter membrane or attached to the fiber surfaces of the non-woven fabric; the equipment for manufacturing the drain board is characterized in that a flocculating agent solution wetting device is arranged between drain board coating equipment and traction winding equipment; the method for manufacturing the drainage plate by adopting the equipment comprises the following steps of mixing a flocculating agent particle solution and a water clarifier according to the weight ratio of 10: 1, uniformly mixing, transferring the mixture to a non-woven fabric of a drainage plate through a flocculant solution infiltration device, and embedding grains after crystallization of the flocculant between the non-woven fabric fibers or attaching the grains to the surfaces of the non-woven fabric fibers. The invention has the characteristics of scientific and reasonable design, convenient use and good water purification effect.
Description
Technical Field
The invention relates to a large-aperture drainage plate for quickly flocculating suspended particles, a manufacturing machine and a manufacturing method of the drainage plate.
Background
The plastic drainage plate consists of a plastic core plate and non-woven fabrics wrapped outside the plastic core plate. The plastic core board is provided with a drainage channel, and the non-woven fabric forms a permeable filter membrane through meshes between the chemical fibers. The plastic drainage plate is inserted into a saturated viscous soft foundation such as silt, mucky soil, filling soil and the like, and under the action of upper pre-pressing load, water in gaps in the soft foundation permeates through the non-woven fabric filter membrane layer and is discharged through a drainage channel formed on the plastic core plate, so that the aim of accelerating the consolidation of the soft foundation is fulfilled. At present, although common plastic drainage plates on the market have a certain water permeable effect, the water permeable effect is poor, the reason is that the water permeable meshes between the non-woven fabric fibers are small and are easily blocked by fine particles in silt, so that a large amount of water in the soft foundation cannot directly penetrate through the water permeable meshes to enter a drainage channel of the core plate, but slowly penetrates into the drainage channel, the drainage efficiency is low, and the soft foundation treatment engineering period is greatly prolonged.
Disclosure of Invention
Aiming at the technical defects of the water permeability of the existing plastic drainage plate, the invention provides the drainage plate for quickly flocculating suspended particles and the manufacturing equipment and the process method thereof.
The technical scheme of the invention is as follows: the drainage plate comprises a filter membrane and a core plate, wherein the filter membrane covers the core plate, the filter membrane is made of non-woven fabric, alum grains are arranged on the filter membrane, and the alum grains are embedded among fibers of the non-woven fabric or attached to the surfaces of the fibers of the non-woven fabric.
The utility model provides an equipment of above-mentioned drain bar of preparation, it includes cladding equipment, draws winding equipment, cladding equipment is with the non-woven fabrics cladding on the core, draw winding equipment to straighten and the winding with the drain bar, its characterized in that: an alum solution infiltration device is arranged between the coating device and the traction winding device and used for infiltrating an alum solution onto the non-woven fabric;
in an exemplary mode, the soaking equipment adopts a roller type and comprises a transfer press roller, a spray header and an alum solution tank, wherein the transfer press roller comprises an upper transfer press roller and a lower transfer press roller, the upper transfer press roller and the lower transfer press roller clamp the drainage plate, and the drainage plate drives the upper transfer press roller and the lower transfer press roller to rotate oppositely; the spray header is arranged above the upper transfer press roller, the alum solution tank is arranged below the lower transfer press roller, and the lower part of the lower transfer press roller is immersed in the alum solution.
Furthermore, the outer edges of the upper transfer compression roller and the lower transfer compression roller are provided with solvent adsorption layers.
In an exemplary mode, the infiltration equipment is in a spraying type and comprises a spraying pipe and a spray head, the spraying pipe is divided into an upper spraying pipe and a lower spraying pipe, control valves are respectively arranged on the upper spraying pipe and the lower spraying pipe and respectively control the flow rate of alum solution in the upper spraying pipe and the lower spraying pipe, and the spray head comprises an upper spray head and a lower spray head which are respectively communicated with the upper spraying pipe and the lower spraying pipe and respectively supply the alum solution to the upper spray head and the lower spray head.
In an exemplary mode, the soaking device adopts a soaking type and comprises a soaking pool, a lower supporting rotating shaft and an upper supporting rotating shaft, alum solution is arranged in the soaking pool, the lower part of the lower supporting shaft is soaked in the alum solution in the soaking pool, and the drainage plates are sequentially wound on the lower supporting rotating shaft and the upper supporting rotating shaft.
The method for manufacturing the drainage plate by adopting the equipment comprises the following steps:
3, mixing the alum solution obtained in the step 2 and the demulsification water purifier according to the weight ratio of 10: 1, uniformly mixing;
and 5, evaporating water of the non-woven fabric soaked with the alum solution in the step 4 in a natural environment, and embedding the precipitated alum grains in non-woven fabric fibers.
Optionally, the infiltration equipment in the step 4 adopts a roller type, the spray header is arranged above the upper transfer press roller, the alum solution is continuously sprayed on the upper transfer press roller, the alum solution tank is arranged below the lower transfer press roller, and the lower part of the lower transfer press roller is immersed in the alum solution; the alum solution transfer process comprises the following steps: go up and transfer compression roller and lower transfer compression roller centre gripping drain bar, the drain bar drives go up to transfer the compression roller and rotate in opposite directions with lower transfer compression roller, go up to transfer the compression roller with alum solution transfer to the non-woven fabrics above the drain bar on, lower transfer compression roller transfers alum solution to the non-woven fabrics below the drain bar on.
Optionally, the soaking device in step 4 is in a spray type, the spray pipes respectively supply alum solution to the upper spray head and the lower spray head, the upper spray head sprays the alum solution to the non-woven fabric on the upper surface of the drain plate, and the lower spray head sprays the alum solution to the non-woven fabric on the lower surface of the drain plate.
Optionally, in the step 4, the soaking device is of a soaking type, the drain plate sequentially winds the lower supporting rotating shaft and the upper supporting rotating shaft, the lower portion of the lower supporting shaft is soaked in the alum solution in the soaking pool, the non-woven fabric is soaked in the alum solution when the drain plate passes through the lower supporting rotating shaft, and surplus alum solution seeps out in the process of running from the lower supporting rotating shaft to the upper supporting rotating shaft.
Preferably, the concentration of the alum solution in the step 2 is a saturated solution.
The invention arranges a flocculating agent crystal grain in the non-woven fabric filter membrane hole of the prior drainage plate, so that the peripheral water of the plastic drainage plate after being inserted into the sludge is flocculated and precipitated. In order to manufacture the drainage board, alum solution infiltration equipment is arranged between drainage board coating equipment and traction winding equipment, a specific process is set, and alum solution is transferred to non-woven fabric coating the drainage board by adopting the equipment, so that the drainage board capable of flocculating suspended particles quickly is manufactured.
The invention has the characteristics of novel product design, simple equipment structure, reasonable process method and good water drainage and permeation effects.
Drawings
FIG. 1 is a front view of a drain board;
FIG. 2 is a schematic view of the cross-sectional structure A-A of FIG. 1;
FIG. 3 is an enlarged view of portion I of FIG. 2;
FIG. 4 is a schematic main sectional view of the drum-type infiltration apparatus;
FIG. 5 is a schematic view of the cross-sectional structure B-B of FIG. 4;
FIG. 6 is a schematic view of a construction of a soaking type infiltrating apparatus;
FIG. 7 is a schematic view of a spray type infiltration apparatus.
In the accompanying fig. 1-7: a is non-woven fabric fiber, b is alum crystal grain, c is plastic core plate, 1 is upper transfer press roller, 2 is lower transfer press roller, 3 is alum solution tank, 4 is alum solution pipe, 401 is alum solution upper spray head, 401 'is alum solution lower spray head, 5 is drain plate, 6 is front support roller, 7 is rear traction press roller, 8 is lower support rotary shaft, 9 is upper support rotary shaft, 10 is control valve, 11 is upper spray pipe, 11' is lower spray pipe, 12 is liquid collecting tank.
Detailed Description
Fig. 1, 2 and 3 show a drainage board for rapidly flocculating suspended particles, fig. 1 shows a schematic diagram of a new-function non-woven fabric formed by embedding alum grains b between non-woven fabric fibers a, and fig. 2 shows a schematic diagram of a cross section a-a of the new-function non-woven fabric coated on a plastic core board c in fig. 1.
Fig. 4, 5, 6 and 7 show three kinds of equipment for manufacturing the drainage board.
As shown in fig. 4 and 5, after being manufactured by a coating device, a drain board 5 passes through a space between an upper transfer press roller 1 and a lower transfer press roller 2 through a front support roller 6, the drain board 5 is clamped between the upper transfer press roller 1 and the lower transfer press roller 2, the drain board 5 is pulled by a rear pulling press roller 7, the drain board 5 drives the upper transfer press roller 1 and the lower transfer press roller 2 to rotate in opposite directions, a alum solution pipe 4 supplies a flocculating agent to an alum solution upper spray head 401, the alum solution upper spray head 401 is arranged above the upper transfer press roller 1, the alum solution is continuously sprayed to the upper transfer press roller 1, and the alum solution is transferred to a non-woven fabric on the drain board 5 by the upper transfer press roller 1; the lower part of the lower transfer press roller 2 is immersed in an alum solution tank 3, and the lower transfer press roller 2 rotates to transfer the alum solution to the non-woven fabric under the drain board 5, thus completing the flocculant transfer.
In order to enhance the storage capacity of the upper transfer roll 1 and the lower transfer roll 2 for the amount of the flocculant, the outer surfaces thereof are usually provided with a solvent-adsorbing layer such as a sponge.
FIG. 6 shows an embodiment of the immersion type infiltration apparatus. The drainage plate 5 is pulled by a traction compression roller 7 after being manufactured by the coating equipment and respectively passes through a front carrier roller 6, a lower support shaft 8 and an upper support shaft 9, the lower support shaft 8 is soaked in a flocculating agent in the alum solution tank 3, the drainage plate 5 moves upwards after being soaked in the flocculating agent by the lower support shaft 8, the flocculating agent which is surplus in the drainage plate 5 flows back to the alum solution tank 3, and the drainage plate 5 enters the next equipment through the upper support shaft 9.
Fig. 7 shows an embodiment of the spray infiltration apparatus. After being manufactured by coating equipment, the drainage plate 5 is pulled by a traction compression roller 7, and an alum solution upper spray head 401 and an alum solution lower spray head 401' are respectively arranged above and below the running drainage plate 5 and respectively spray a proper amount of alum solution on the non-woven fabrics on the upper surface and the lower surface of the drainage plate 5. The spray pipe 11 is communicated with an alum solution upper spray head 401 and continuously supplies the alum solution to the spray pipe; the lower spray pipe 11 'is communicated with the alum solution lower spray head 401' and continuously supplied with the alum solution. The control valve 10 controls the flow rate entering the upper spray pipe 11 and the lower spray pipe 11 'respectively, and the surplus alum solution sprayed from the alum solution upper spray head 401 and the alum solution lower spray head 401' flows into the liquid collecting tank 12 for recycling.
An embodiment of a method of making a drain plate using a roller-type wet-skid device.
a. And manufacturing the drain board by using cladding equipment.
b. Dissolving alum particles in water while stirring to obtain alum solution, adding iron polychlorid solution in one tenth of the weight of alum solution, and mixing to obtain mixed alum solution.
c. The upper transfer compression roller 1 and the lower transfer compression roller 2 clamp the drainage plate 5, the drainage plate 5 drives the upper transfer compression roller 1 and the lower transfer compression roller 2 to rotate oppositely, the spray header 401 continuously upwards transfers the alum mixed solution to the compression roller 1, the upper transfer compression roller 1 transfers the alum mixed solution to the non-woven fabric R on the drainage plate, and the lower transfer compression roller 2 transfers the alum mixed solution from the alum solution tank 3 to the non-woven fabric below the drainage plate 5.
d. Evaporating water from the drainage plate soaked by the alum mixed solution in a natural environment, and embedding crystal grains precipitated from the alum mixed solution in the non-woven fabric fibers or attaching the crystal grains to the surfaces of the non-woven fabric fibers.
Claims (11)
1. The utility model provides a drain bar of quick flocculation suspended particle, it includes filter membrane and core, the filter membrane cladding the core, the filter membrane is the non-woven fabrics, its characterized in that: the filter membrane is provided with alum grains, and the alum grains are embedded between the non-woven fabric fibers or attached to the surfaces of the non-woven fabric fibers.
2. The utility model provides an equipment of above-mentioned drain bar of preparation, it includes cladding equipment, draws winding equipment, cladding equipment is with the non-woven fabrics cladding on the core, draw winding equipment to straighten and the winding with the drain bar, its characterized in that: an alum solution infiltration device is arranged between the coating device and the traction winding device and used for infiltrating an alum solution onto the non-woven fabric.
3. The apparatus of claim 2, wherein: the infiltration equipment adopts a drum type and comprises a transfer compression roller, a spray header and an alum solution tank, wherein the transfer compression roller comprises an upper transfer compression roller and a lower transfer compression roller, the upper transfer compression roller and the lower transfer compression roller clamp the drainage plate, and the drainage plate drives the upper transfer compression roller and the lower transfer compression roller to rotate in opposite directions; the spray header is arranged above the upper transfer press roller, the alum solution tank is arranged below the lower transfer press roller, and the lower part of the lower transfer press roller is immersed in the alum solution.
4. The apparatus of claim 3, wherein: and the outer edges of the upper transfer compression roller and the lower transfer compression roller are provided with solvent adsorption layers.
5. The apparatus of claim 2, wherein: the infiltration equipment adopts a spray type and comprises a spray pipe and a spray head, the spray pipe is divided into an upper spray pipe and a lower spray pipe, control valves are respectively arranged on the upper spray pipe and the lower spray pipe and respectively control the flow of alum solution in the upper spray pipe and the lower spray pipe, and the spray head comprises an upper spray head and a lower spray head which are respectively communicated with the upper spray pipe and the lower spray pipe.
6. The apparatus of claim 2, wherein: the soaking device adopts a soaking type and comprises a soaking pool, a lower support rotating shaft and an upper support rotating shaft, alum solution is arranged in the soaking pool, the lower part of the lower support shaft is soaked in the alum solution in the soaking pool, and the drainage plates are sequentially wound on the lower support rotating shaft and the upper support rotating shaft.
7. A method of making the drain board of claim 1 using the apparatus of claim 2, wherein: it comprises the following steps:
step 1, manufacturing a plastic drainage plate by using drainage plate coating equipment;
step 2, putting a proper amount of alum particles into a proper amount of water to be dissolved until all the alum particles are dissolved to prepare an alum solution with a certain concentration;
3, mixing the alum solution obtained in the step 2 and the demulsification water purifier according to the weight ratio of 10: 1, uniformly mixing;
step 4, uniformly soaking the solution obtained in the step 3 on the non-woven fabric through soaking equipment;
and 5, evaporating water of the non-woven fabric soaked with the alum solution in the step 4 in a natural environment, and embedding the precipitated alum grains in non-woven fabric fibers.
8. The method of claim 7, wherein: in the step 4, the infiltration equipment adopts a roller type, a spray head is arranged above an upper transfer compression roller, an alum solution is continuously sprayed to the upper transfer compression roller, an alum solution tank is arranged below a lower transfer compression roller, the lower part of the lower transfer compression roller is immersed in the alum solution, and the alum solution transfer process is as follows: go up and transfer compression roller and lower transfer compression roller centre gripping drain bar, the drain bar drives go up to transfer the compression roller and rotate in opposite directions with lower transfer compression roller, go up to transfer the compression roller with alum solution transfer to the non-woven fabrics above the drain bar on, lower transfer compression roller transfers alum solution to the non-woven fabrics below the drain bar on.
9. The method of claim 7, wherein: and 4, adopting a spraying type soaking device, wherein the spray pipes respectively supply alum solution to the upper spray head and the lower spray head, the upper spray head sprays the alum solution to the non-woven fabric on the upper surface of the drainage plate, and the lower spray head sprays the alum solution to the non-woven fabric on the lower surface of the drainage plate.
10. The method of claim 7, wherein: in the step 4, the soaking device adopts a soaking type, the drainage plates are sequentially wound on the lower support rotating shaft and the upper support rotating shaft, the lower part of the lower support shaft is soaked in the alum solution in the soaking pool, the non-woven fabric is soaked in the alum solution when the drainage plates pass through the lower support rotating shaft, and in the process of running from the lower support rotating shaft to the upper support rotating shaft, the surplus alum solution seeps out.
11. The method of claim 7, wherein: the concentration of the alum solution in the step 2 is a saturated solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210813311.4A CN115094869B (en) | 2022-07-12 | 2022-07-12 | Drainage plate capable of flocculating suspended particles rapidly and manufacturing equipment and process method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210813311.4A CN115094869B (en) | 2022-07-12 | 2022-07-12 | Drainage plate capable of flocculating suspended particles rapidly and manufacturing equipment and process method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115094869A true CN115094869A (en) | 2022-09-23 |
| CN115094869B CN115094869B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210813311.4A Active CN115094869B (en) | 2022-07-12 | 2022-07-12 | Drainage plate capable of flocculating suspended particles rapidly and manufacturing equipment and process method thereof |
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|---|---|---|---|---|
| CN106582325A (en) * | 2017-03-03 | 2017-04-26 | 河北工业大学 | Preparation method of highly-hydrophobic polyvinylidene fluoride microporous membrane |
| CN109208575A (en) * | 2018-09-30 | 2019-01-15 | 华中科技大学 | A kind of method of medicament-horizontal vacuum joint reinforcement high-moisture percentage saturated dredger soft soil |
| CN109267561A (en) * | 2018-08-16 | 2019-01-25 | 温州大学 | The system and method for composite flocculation agent combined vacuum precompressed processing reclaimed ground |
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| CN112144501A (en) * | 2020-09-03 | 2020-12-29 | 温州大学 | Plastic drainage plate for preventing micro soil particles from being blocked and construction method thereof |
| CN214234707U (en) * | 2021-01-04 | 2021-09-21 | 成都特瓦新材料有限公司 | Drain bar auxiliary agent sprays subassembly and drain bar processing equipment |
| CN113789776A (en) * | 2021-10-28 | 2021-12-14 | 中船勘察设计研究院有限公司 | Composite type drain board for preventing back flushing gas from clogging |
-
2022
- 2022-07-12 CN CN202210813311.4A patent/CN115094869B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106582325A (en) * | 2017-03-03 | 2017-04-26 | 河北工业大学 | Preparation method of highly-hydrophobic polyvinylidene fluoride microporous membrane |
| CN109267561A (en) * | 2018-08-16 | 2019-01-25 | 温州大学 | The system and method for composite flocculation agent combined vacuum precompressed processing reclaimed ground |
| CN109208575A (en) * | 2018-09-30 | 2019-01-15 | 华中科技大学 | A kind of method of medicament-horizontal vacuum joint reinforcement high-moisture percentage saturated dredger soft soil |
| CN111660638A (en) * | 2020-05-25 | 2020-09-15 | 佛山市亿翔塑胶有限公司 | Environment-friendly PVC transparent tablecloth |
| CN112144501A (en) * | 2020-09-03 | 2020-12-29 | 温州大学 | Plastic drainage plate for preventing micro soil particles from being blocked and construction method thereof |
| CN214234707U (en) * | 2021-01-04 | 2021-09-21 | 成都特瓦新材料有限公司 | Drain bar auxiliary agent sprays subassembly and drain bar processing equipment |
| CN113789776A (en) * | 2021-10-28 | 2021-12-14 | 中船勘察设计研究院有限公司 | Composite type drain board for preventing back flushing gas from clogging |
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| CN115094869B (en) | 2024-06-18 |
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