CN220779169U - Quick filter tank with high sewage receiving capacity - Google Patents
Quick filter tank with high sewage receiving capacity Download PDFInfo
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- CN220779169U CN220779169U CN202321466135.8U CN202321466135U CN220779169U CN 220779169 U CN220779169 U CN 220779169U CN 202321466135 U CN202321466135 U CN 202321466135U CN 220779169 U CN220779169 U CN 220779169U
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- 239000010865 sewage Substances 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 199
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000009826 distribution Methods 0.000 claims abstract description 36
- 239000004576 sand Substances 0.000 claims abstract description 33
- 238000011001 backwashing Methods 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
The utility model discloses a rapid filter with high sewage receiving capacity, which comprises a rapid filter body, wherein the rapid filter body is formed by combining two groups of independently arranged sand filters, the top end of each sand filter is provided with a water inlet pipeline, the sand filters are internally used for providing sewage through the water inlet pipeline, the top end inside each sand filter is provided with a top cover, the top covers are openable movable top covers, filter plates are arranged below the top covers, the water inlet pipeline sequentially penetrates through the top covers and the filter plates from top to bottom and is connected with a water distribution pipe, the water distribution pipe is fixedly arranged on the end face of the bottom of the filter plates, and the water outlet of the water distribution pipe is communicated with a long-handle filter head assembly. The rapid filter body is formed by combining the two groups of independently arranged sand filters, the conventional biological aerated filter can be replaced, and the condition that filter materials are agglomerated and blocked due to the fact that a large amount of biological films of the biological filters fall off in a concentrated manner and gaps among part of filter materials are blocked is prevented.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a rapid filter tank with high sewage receiving capacity.
Background
The filter tank duty cycle generally includes two processes, filtration and backwash. The filter tank is commonly used for the treatment of the water supply and the wastewater after the precipitation treatment and is also used for the advanced treatment of the water.
The filtering process comprises two stages of filtering and back flushing. The filtering stage is that the waste water enters the pool from the water pipe and then flows through the filtering material layer and the supporting layer, and fine suspended matters and colloid substances in the waste water are trapped in the gaps on the surface of the filtering material and the inner layer, so that the waste water is purified. The clear liquid after the filtration treatment is collected by a water collecting pipe and then discharged. The back flushing stage is that flushing water enters the tank through the water distribution system, flows through the supporting layer and the filter material layer, flushes away dirt deposited in the filter material layer, and enters the back flushing drainage tank with the dirt, and is discharged out of the tank.
The existing filter generally adopts a biological aerated filter, the biological aerated filter has higher requirements on the ss of inflow water, and the water concentration in reclaimed water is higher, so that when the filter is used for a long time, a large amount of biological membranes of the biological aerated filter can fall off in a concentrated manner, and gaps among part of filter materials are blocked to cause the condition of filter material agglomeration and blockage.
The patent publication number is: CN 107188302A discloses a biological sand filter water treatment system, which belongs to the technical field of water treatment, and separates an aeration part from a sand bed, so that the complex of traditional back flushing can be avoided while the grading is avoided. The technical scheme has the advantages of small occupied area, obvious sand washing effect, no blockage of the pipeline and the like. However, the above technical scheme adopts a mode of separating the aeration part from the sand bed, which results in complex structure and high energy consumption, and is not suitable for being applied to small and medium enterprises.
In order to solve the defects of the technical problems, a rapid filter with high sewage receiving capacity is developed.
Disclosure of Invention
The utility model aims to provide a rapid filter with high sewage receiving capacity, which is characterized in that two groups of independently arranged sand filters are combined to form a rapid filter body to replace the existing biological aerated filter, so that the condition of filter material agglomeration and blockage caused by higher water concentration of reclaimed water is avoided.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the rapid filter with high sewage receiving capacity comprises a rapid filter body, wherein the rapid filter body is formed by combining two groups of independently arranged sand filters, the top end of the sand filter is provided with a water inlet pipeline, and the water inlet pipeline is used for providing sewage into the sand filter,
the sand filter is characterized in that a top cover is arranged at the top end inside the sand filter, the top cover is an openable movable top cover, a filter plate is arranged below the top cover, the water inlet pipe sequentially penetrates through the top cover and the filter plate from top to bottom and is connected with a water distribution pipe, the water distribution pipe is fixedly arranged on the end face of the bottom of the filter plate, and a water outlet of the water distribution pipe is communicated with the long-handle filter head assembly.
By adopting the technical scheme, the rapid filter body is formed by combining the two groups of independently arranged sand filters, the existing biological aerated filter can be replaced, and the situation that filter materials are clustered and blocked due to the fact that a large amount of biological films of the biological filters fall off in a concentrated manner and gaps among part of filter materials are blocked is prevented.
The utility model is further provided with:
the water inlet pipeline is communicated with the two groups of water inlet branch pipes and is communicated with the water distribution pipe through the water inlet branch pipes, and pneumatic regulating valves are arranged on the two groups of water inlet branch pipes.
By adopting the technical scheme, the needed sewage is conveyed into the water inlet branch pipe through the water inlet pipeline.
The utility model is further provided with:
the long handle filter head assembly is provided with a filter cap, the filter cap is fixedly connected with a main pipe through a connecting piece, the connecting piece can be connected by adopting a sleeve, the other end of the main pipe is connected with a connecting assembly through threads, and the cover body is connected through the connecting assembly through threads.
By adopting the technical scheme, the connection between the cover body and the main pipe is realized through the connecting component.
The utility model is further provided with:
the cover body is wholly trapezoidal setting, is provided with the water distribution surface on the cover body, and the one side that is away from the cover body is the water inlet channel to be responsible for, and one side that is close to the water distribution surface is the water outlet channel, and water outlet channel is towards water distribution surface one side play water, and the water distribution surface extends towards the direction of keeping away from the responsible for to the cover body outer wall that is located water distribution surface position department is provided with the jet pipe, the jet pipe adopts multiunit setting, and evenly distributed.
By adopting the technical scheme, water is conveyed to the central line position of the cover body through the main pipe, at the moment, the water flows out along the outer wall of the cover body, enters the jet pipe under the action of inertia, then falls to the lower side again through the jet pipe, at the moment, due to the arrangement of the jet pipe, the water flows at different speeds and fall in layers, and the situation that a spray nozzle is blocked is avoided.
The utility model is further provided with:
the outer connecting pipe is arranged at the outer side of the middle lower end of the main pipe and is formed by a shunt pipe and a guide pipe, one end of the guide pipe is sleeved on the inner wall of the connecting assembly, and the other end of the guide pipe extends into the shunt pipe.
By adopting the technical scheme, the connection between the main pipe and the outer connecting pipe is realized.
The utility model is further provided with:
the water distribution pipe is characterized in that a water outlet hole is formed in the connecting position of the split pipe and the main pipe, water flowing in the main pipe is conveyed into the split pipe through the water outlet hole, a water outlet channel is formed between the split pipe and the guide pipe, one end of the water outlet channel is communicated with the water distribution surface of the cover body, the other end of the water outlet channel is communicated with the water inlet channel of the main pipe, water flows to the water distribution surface of the cover body through the water outlet channel, and communication between the main pipe and the cover body is achieved.
By adopting the technical scheme, water can be guaranteed to enter the water outlet channel, and water is sprayed to the water distribution surface of the cover body through the water outlet channel.
The utility model is further provided with:
the filter plate is provided with the filter material layer in the position department under the filter plate, is provided with the support layer under the filter material layer, be provided with the bottom space under the support layer, the inside water collector that is provided with in bottom space, the delivery port intercommunication water outlet pipeline of water collector to the clear water tank is led to the water outlet pipeline other end intercommunication, the water inlet intercommunication back-washing water inlet pipeline of water collector, all be provided with second manual butterfly valve on back-washing water inlet pipeline and the water outlet pipeline, the water collector adopts common water collector in the market, back-washing water inlet pipeline other end intercommunication pressurized water pump to through pressurized water pump intercommunication water inlet pipeline.
The utility model is further provided with:
the supporting layer is filled with cobbles with particle sizes gradually reduced from top to bottom, and the total filling height is 440mm; the filter material layer is filled with natural sea sand with different grades, the particle size of the filter material is 1.2-2.8 mm, and the layer height is 1525mm; the grain size of the filter material is 0.5 mm-1.2 mm, and the height is 50mm (the filter material is mixed into sea sand with large grain size and does not occupy the total layer height).
The utility model is further provided with:
the back cleaning assembly is a common back cleaning machine in the market, the back cleaning assembly is a Roots blower, the other end of the pipeline of the back cleaning assembly is communicated to the inside of the filter tank, the main pipe of the long-handle filter head assembly is provided with a plurality of holes 22, and the lower end of the long-handle filter head assembly is provided with a groove.
By adopting the technical scheme, when the filter plate is used, air cushion layer is formed at the upper end of the lower space of the filter plate when air is simultaneously fed or water is fed for flushing, and water layer is arranged at the lower part of the filter plate, and air enters the main pipe through the small holes in the air cushion layer.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model adopts a plurality of modes to wash, has high back flushing efficiency and short back flushing time, and ensures that the filter material layer has better bacterial pollution resistance.
2. The rapid filter body is formed by combining the two groups of independently arranged sand filters, the conventional biological aerated filter can be replaced, and the condition that filter materials are agglomerated and blocked due to the fact that a large amount of biological films of the biological filters fall off in a concentrated manner and gaps among part of filter materials are blocked is prevented.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of the installation of a water distribution pipe and a long handle filter head assembly according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a long handle filter head assembly according to an embodiment of the present utility model;
FIG. 4 is a partial pipeline diagram of an embodiment of the present utility model.
In the figure: 1. a rapid filter body; 2. an air path; 3. a backwashing assembly; 4. a filter material layer; 5. a long handle filter head assembly; 051. a filter cap; 052. a connecting piece; 053. a main pipe; 054. an outer connection tube; 055. a shunt; 056. a guide tube; 057. a water outlet channel; 058. a connection assembly; 059. jet pipe; 6. a sand filter; 7. reversely cleaning the drain pipe; 8. a top cover; 9. a filter plate; 10. a support layer; 11. a water collector; 12. a bottom space; 13. a pneumatic control valve; 14. a water inlet pipeline; 15. a water distribution pipe; 16. a cover body; 17. a water outlet hole; 18. a first manual butterfly valve; 19. a water pump; 20. a water inlet branch pipe; 21. back-washing the water inlet pipeline; 22. a hole; 23. a second manual butterfly valve; 24. and a water outlet pipeline.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment one:
referring to fig. 1-4, the present utility model provides a technical solution: the rapid filter with high sewage receiving capacity comprises a rapid filter body 1, wherein the rapid filter body 1 is formed by combining two groups of independently arranged sand filters 6, the top end of each sand filter 6 is provided with a water inlet pipeline 14, sewage is provided into each sand filter 6 through the water inlet pipeline 14,
the top end inside the sand filter tank 6 is provided with a top cover 8, the top cover 8 is an openable movable top cover, a filter plate 9 is arranged below the top cover 8, a water inlet pipeline 14 sequentially penetrates through the top cover 8 and the filter plate 9 from top to bottom and is connected with a water distribution pipe 15, and the water distribution pipe 15 is fixedly arranged on the end face of the bottom of the filter plate 9.
Referring to fig. 1-4, the water inlet pipeline 14 is connected to two groups of water inlet branch pipes 20, and is connected to the water distribution pipe 15 through the water inlet branch pipes 20, pneumatic adjusting valves 13 are respectively arranged on the two groups of water inlet branch pipes 20, and the needed sewage is conveyed into the water inlet branch pipes 2 through the water inlet pipeline 14; the water outlet of the water distribution pipe 15 is communicated with the long handle filter head assembly 5.
Referring to fig. 1-4, in order to solve the problems that the existing filter generally adopts a biological aerated filter, the biological aerated filter has higher requirements on the ss of inflow water, and the water concentration in reclaimed water is higher, when the filter is used for a long time, a large amount of biological membranes of the biological aerated filter fall off in a concentrated manner, and gaps among part of filter materials are blocked to cause filter material agglomeration and blockage; the filter plate 9 is provided with a filter material layer 4 at a position right below the filter material layer 4, a supporting layer 10 is arranged right below the supporting layer 10, a bottom space 12 is arranged right below the supporting layer 10, a water collector 11 is arranged inside the bottom space 12, a water outlet of the water collector 11 is communicated with a water outlet pipeline 24, the other end of the water outlet pipeline 24 is communicated with a clean water tank, a water inlet of the water collector 11 is communicated with a backwashing water inlet pipeline 21, the backwashing water inlet pipeline 21 and the water outlet pipeline 24 are both provided with a second manual butterfly valve 23, the water collector adopts a common water collector in the market, and the other end of the backwashing water inlet pipeline 21 is communicated with a pressurized water pump 19 and is communicated with the water inlet pipeline 14 through the pressurized water pump 19.
Referring to fig. 1-4, the supporting layer is filled with cobbles with gradually reduced particle sizes from top to bottom, and the total filling height is 440mm; the filter material layer is filled with natural sea sand with different grades, the particle size of the filter material is 1.2-2.8 mm, and the layer height is 1525mm; the grain size of the filter material is 0.5 mm-1.2 mm, and the height is 50mm (the filter material is mixed into sea sand with large grain size and does not occupy the total layer height).
Referring to fig. 1-4, the backwashing assembly is a commercially available backwashing machine, a Roots blower is adopted as a backwashing blower of the backwashing assembly, the other end of a pipeline of the backwashing assembly is communicated to the inside of the filter tank, 2-6 holes 22 are formed in a main pipe 053 of the long-handle filter head assembly 5, and a groove is formed in the lower end of the main pipe.
In the embodiment, when the filter plate is used and is simultaneously subjected to air inlet or water inlet flushing, an air cushion layer is formed at the upper end of the space at the lower part of the filter plate, and a water layer is arranged at the lower part of the space, so that air enters the main pipe through the small holes in the air cushion layer.
Embodiment two: referring to fig. 1-4, on the basis of the first embodiment, in order to avoid the situation that the long-handle filter head assembly is blocked, the long-handle filter head assembly 5 is provided with a filter cap 051, the filter cap 051 is fixedly connected with a main pipe 053 through a connecting piece 052, the connecting piece 052 can be connected by adopting a sleeve, the other end of the main pipe 053 is in threaded connection with a connecting component 058, and the cover 16 is in a trapezoid arrangement with respect to the whole cover 16 through the connecting component in threaded connection with the connecting component, the cover 16 is provided with a water distribution surface, one side of the main pipe far from the cover 16 is a water inlet channel, one side close to the water distribution surface is a water outlet channel, the water distribution surface extends towards one side of the water distribution surface and is far away from the main pipe, a jet pipe 059 is arranged on the outer wall of the cover at the position of the water distribution surface, the jet pipe 059 adopts a plurality of groups of arrangement, and is evenly distributed at the position of the center line of the cover through the main pipe 053 at the moment, the water flows out along the outer wall of the cover, and then enters under the inertia effect, and then falls down to the lower side of the main pipe, and the jet pipe is not blocked, and the situation is avoided due to the fact that the water falls down in a layered condition;
an outer connecting pipe 054 is arranged outside the middle lower end of the main pipe 053, the outer connecting pipe 054 is formed by combining a shunt pipe 055 and a guide pipe 056, one end of the guide pipe 056 is sleeved on the inner wall of the connecting component 058, and the other end of the guide pipe 056 extends into the shunt pipe 055, so that the connection between the main pipe and the outer connecting pipe is realized;
the water outlet hole 17 is formed in the connecting position of the split pipe 055 and the main pipe 053, water flowing in the main pipe is conveyed into the split pipe 055 through the water outlet hole 17, a water outlet channel 057 is arranged between the split pipe 055 and the guide pipe 056, one end of the water outlet channel is communicated with the water distribution surface of the cover body, the other end of the water outlet channel is communicated with the water inlet channel of the main pipe, water flows to the water distribution surface of the cover body through the water outlet channel, and communication between the main pipe and the cover body is realized.
In this embodiment, it is ensured that water can enter the water outlet passage and be sprayed to the cloth water surface of the cover body through the water outlet passage.
The application flow and the working principle of the utility model are as follows:
when the filter is in a filtering state, pressurized sewage to be treated firstly enters the water inlet branch pipe 20 through the water inlet pipeline 14 and is conveyed into the long-handle filter head assembly 5 through the water inlet branch pipe, then the water uniformly flows through the filter material layer 4 through the long-handle filter head assembly 5, at the moment, suspended matters are trapped by the filter material of the filter material layer, at the moment, a water collector in the bottom space 12 of the sand filter is used for collecting the filtered water, and the filtered water flows out of the sand filter 6 through the water collector and enters the clean water tank;
along with the continuous accumulation of impurities in the filter material layer, a worker turns on a water pump and a second manual butterfly valve which are positioned on the back-washing water inlet pipeline 21 by closing the first manual butterfly valve 18 and the second manual butterfly valve 23 which are positioned on the water outlet pipeline 24, so as to control the water flow direction, and when the system is in a back flushing state, pressurized water enters the filter material layer through the water collector 11 at the bottom of the sand filter 6 at the moment to flush the filter material layer;
and meanwhile, the back cleaning assembly 3 is started, the back cleaning assembly is conveyed to the inside of the filter tank through the air channel 2, an air cushion layer is formed at the upper end of the lower space of the filter plate (because the air density is lower than that of water and floats upwards in the water), the air cushion layer ensures the uniform distribution of gas and water, the lower part is a water layer, air enters the main pipe of the long-handle filter head assembly through small holes and grooves in the air cushion layer, water flow enters the main pipe through the grooves of the submerged part of the lower end part of the main pipe, then water and air are mixed in the main pipe, and finally the filter layer is further flushed through the long-handle filter head assembly.
The utility model adopts a plurality of modes to wash, has high back flushing efficiency and short back flushing time, and ensures that the filter material layer has better bacterial pollution resistance; and all that is not described in detail in this specification is within the skill of the art.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a high quick filtering pond of dirt ability that receives, includes quick filtering pond body, quick filtering pond body is formed by the combination of two sets of independent sand filtering pond that set up, sand filtering pond top is provided with the water inlet pipeline to be used for providing sewage in to sand filtering pond through the water inlet pipeline, its characterized in that: the top end inside the sand filter is provided with a top cover, the top cover is an openable movable top cover, a filter plate is arranged below the top cover, the water inlet pipeline is communicated with two groups of water inlet branch pipes, the water inlet branch pipes are communicated with water distribution pipes, and pneumatic regulating valves are arranged on the two groups of water inlet branch pipes; the water distribution pipe is fixedly arranged on the end face of the bottom of the filter plate, and the water outlet of the water distribution pipe is communicated with the long-handle filter head component.
2. A rapid filter with high capacity of receiving sewage according to claim 1, wherein: the filter plate is provided with a filter material layer at a position right below the filter plate, a supporting layer is arranged right below the filter material layer, a bottom space is arranged right below the supporting layer, and a water collector is arranged inside the bottom space.
3. A rapid filter with high capacity of receiving sewage according to claim 2, wherein: the water inlet of water collector communicates back washing water inlet pipeline, all be provided with second manual butterfly valve on back washing water inlet pipeline and the outlet pipe way, back washing water inlet pipeline other end intercommunication pressurized water pump to communicate water inlet pipeline through pressurized water pump.
4. A rapid filter with high capacity of receiving sewage according to claim 1, wherein: the long handle filter head assembly is provided with a filter cap, the filter cap is fixedly connected with a main pipe through a connecting piece, a plurality of groups of holes are formed in the main pipe, a groove is formed in the lower end of the main pipe, the other end of the main pipe is provided with a connecting assembly, and the filter cap is connected with a cover body through threads of the connecting assembly.
5. The rapid filter with high sewage receiving capacity according to claim 4, wherein: the cover body is integrally arranged in a trapezoid shape, the cover body is provided with a water distribution surface, the outer wall of the cover body positioned at the position of the water distribution surface is provided with jet pipes, and the jet pipes are arranged in a plurality of groups and are uniformly distributed.
6. The rapid filter with high sewage receiving capacity according to claim 4, wherein: the outer connecting pipe is arranged at the outer side of the middle lower end of the main pipe and is formed by a shunt pipe and a guide pipe, one end of the guide pipe is sleeved on the inner wall of the connecting assembly, and the other end of the guide pipe extends into the shunt pipe.
7. The rapid filter with high sewage receiving capacity according to claim 6, wherein: the water outlet is formed in the position where the shunt pipe is connected with the main pipe, a water outlet channel is formed between the shunt pipe and the guide pipe, one end of the water outlet channel is communicated with the water distribution surface of the cover body, and the other end of the water outlet channel is communicated with the water inlet channel of the main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321466135.8U CN220779169U (en) | 2023-06-09 | 2023-06-09 | Quick filter tank with high sewage receiving capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321466135.8U CN220779169U (en) | 2023-06-09 | 2023-06-09 | Quick filter tank with high sewage receiving capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220779169U true CN220779169U (en) | 2024-04-16 |
Family
ID=90657379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321466135.8U Active CN220779169U (en) | 2023-06-09 | 2023-06-09 | Quick filter tank with high sewage receiving capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220779169U (en) |
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2023
- 2023-06-09 CN CN202321466135.8U patent/CN220779169U/en active Active
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