CN214327399U - Multi-section sewage purification device for livestock breeding - Google Patents
Multi-section sewage purification device for livestock breeding Download PDFInfo
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- CN214327399U CN214327399U CN202120039852.7U CN202120039852U CN214327399U CN 214327399 U CN214327399 U CN 214327399U CN 202120039852 U CN202120039852 U CN 202120039852U CN 214327399 U CN214327399 U CN 214327399U
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- solid
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- liquid separation
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- 239000010865 sewage Substances 0.000 title claims abstract description 69
- 238000000746 purification Methods 0.000 title claims abstract description 42
- 238000009395 breeding Methods 0.000 title claims abstract description 24
- 230000001488 breeding effect Effects 0.000 title claims abstract description 24
- 244000144972 livestock Species 0.000 title claims description 13
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000005189 flocculation Methods 0.000 claims abstract description 29
- 230000016615 flocculation Effects 0.000 claims abstract description 29
- 238000000926 separation method Methods 0.000 claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 238000004659 sterilization and disinfection Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 14
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 230000001954 sterilising effect Effects 0.000 claims description 6
- 238000012377 drug delivery Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 18
- 239000003814 drug Substances 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000002070 germicidal effect Effects 0.000 abstract description 2
- 238000009360 aquaculture Methods 0.000 description 8
- 244000144974 aquaculture Species 0.000 description 8
- 238000004062 sedimentation Methods 0.000 description 8
- 239000000645 desinfectant Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- 238000007790 scraping Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000008394 flocculating agent Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 235000013594 poultry meat Nutrition 0.000 description 1
- 235000013613 poultry product Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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Abstract
The utility model discloses a multistage formula sewage purification device for livestock-raising relates to sewage purification device technical field, including the box, the bottom of box is fixed with a plurality of pillars, and inside one side fixed mounting of box has the solid-liquid separation case, and one side fixed mounting of solid-liquid separation case has the flocculation case, and one side fixed mounting of flocculation case has the filter, and one side fixed mounting of filter has the disinfect box. This multistage formula sewage purification device for livestock-raising sets up the solid-liquid separation case, solid and liquid to in the breed sewage carry out the filtering separation, convenient follow-up carry out purification treatment to breeding sewage, set up the flocculation case, first medicine pipe of throwing, the second motor, first stirring frame and filter, carry out the flocculation to sewage, filter, it is better to make the clearance effect, set up the disinfect box, the second is thrown the medicine pipe, third motor and second stirring frame, carry out germicidal treatment to sewage, multi-stage treatment, it is better to make the treatment effect to sewage, environmental protection more.
Description
Technical Field
The utility model relates to a sewage purification device technical field specifically is a multistage formula sewage purification device for livestock-raising.
Background
The breeding industry is an important industry for the rural development in China; in recent years, with the continuous expansion of the breeding scale and the rapid increase of the breeding quantity, a large amount of livestock and poultry excrement sewage becomes a pollution source, if the pollution generated by the farms cannot be treated in time, the pollution can certainly cause great harm to the environment, the ecological environment is deteriorated, the quality of livestock and poultry products is reduced, the health of human bodies is endangered, and the lag of the pollution treatment technology of the breeding industry can seriously restrict the sustainable development of the breeding industry. The discharge of the feces generated by the farm causes serious pollution to surface water, underground water, soil and ambient air, which directly affects the health of people, and untreated feces contain a large amount of pollutants, if the organic wastewater is directly discharged or enters rivers and lakes along with the erosion of rainwater, a large amount of dissolved oxygen in the water is consumed, so that the water becomes black and smelly, and the water pollution is caused.
In chinese utility model patent application no: disclose in CN201721576033.6 a breed sewage purification device, this breed sewage purification device, including the device main part, the left side of device main part is equipped with the sedimentation tank, and sedimentation tank and device main part fixed connection, the left side of sedimentation tank is equipped with the water inlet, and the water inlet embedding sets up in the sedimentation tank, the right side of sedimentation tank is equipped with the grid, and grid and sedimentation tank swing joint, the right side of sedimentation tank is equipped with the buffer pool, and the buffer pool embedding sets up in the sedimentation tank, the right side of buffer pool is equipped with the anaerobism pond, and anaerobism pond and buffer pool fixed connection, the outside in anaerobism pond is equipped with the anaerobism pond outer wall, and anaerobism pond outer wall and anaerobism pond fixed connection. This breed sewage purification device, in the use, it still has can not be abundant to filter sewage and subside, evolve, and the treatment effect is poor to lead to pollutant in the sewage to increase, peculiar smell among the sewage is escaped easily, causes surrounding air pollution, leads to breeding of bacterium easily, influences beasts and birds and breeds staff's healthy shortcoming.
Therefore, it is necessary to provide a multi-stage sewage purification apparatus for livestock breeding to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
An object of the utility model is to provide a multistage formula sewage purification device is used in livestock-raising to solve the current sewage purification device who proposes in the above-mentioned background art, in the use, it still has can not be abundant to filter sewage and subside, evolve, the treatment effect is poor, thereby lead to pollutant in the sewage to increase, peculiar smell among the sewage escapes easily, causes air pollution on every side, leads to breeding of bacterium easily, influences beasts and birds and breeds staff's healthy problem.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a multi-section sewage purification device for livestock breeding comprises a box body, wherein a plurality of supporting columns are fixed at the bottom of the box body, a solid-liquid separation box is fixedly installed on one side inside the box body, a flocculation box is fixedly installed on one side of the solid-liquid separation box, a filter is fixedly installed on one side of the flocculation box, a disinfection box is fixedly installed on one side of the filter, a purification box is fixedly installed on one side of the disinfection box, a water inlet is fixedly installed at the top of the solid-liquid separation box, a metal filter plate is fixedly installed inside the solid-liquid separation box, a first connecting pipe is fixedly connected between the solid-liquid separation box and the flocculation box, a connecting valve is fixedly installed outside the first connecting pipe, a second connecting pipe is fixedly connected to one side of the bottom of the disinfection box, one end of the second connecting pipe is fixedly connected to the purification box, and a water pump is fixedly installed in the middle of the second connecting pipe, and a drain pipe is fixedly arranged on one side of the bottom of the purification box.
Preferably, a first motor is fixedly installed on one side of the solid-liquid separation box, a screw is fixedly connected to one end of the first motor, a moving block is movably installed outside the screw, a screw hole is formed in the moving block, an auxiliary polished rod is movably connected inside the moving block, and a scraper is fixedly connected to the bottom of the moving block.
Preferably, the top one side fixed mounting of flocculation case has first medicine pipe of throwing, the top fixed mounting of flocculation case has the second motor, the bottom movable mounting of second motor has first stirring frame.
Preferably, a second dosing pipe is fixedly mounted on one side of the top of the sterilizing box, a third motor is fixedly mounted on the top of the sterilizing box, and a second stirring frame is movably mounted at the bottom of the third motor.
Preferably, one side of the purification box is fixedly provided with an ozone generator, and the inside of the purification box is fixedly provided with an activated carbon adsorption box.
Preferably, the screw is matched with the screw hole.
Preferably, the scraping plate is attached to the surface of the metal filter plate.
(III) advantageous effects
Compared with the prior art, the utility model provides a multistage formula sewage purification device for livestock-raising possesses following beneficial effect:
1. this multistage formula sewage purification device for livestock-raising, through setting up the solid-liquid separation case, solid and liquid to in the breed sewage carry out filtering separation, convenient follow-up carry out purification treatment to breed sewage, set up the flocculation case, first medicine pipe of throwing, the second motor, first stirring frame and filter, carry out the flocculation to sewage, filter, it is better to make the clearance effect, set up the disinfect box, the second is thrown medicine pipe, third motor and second stirring frame, carry out germicidal treatment to sewage, multi-stage treatment, it is better to the treatment effect of sewage to make, environmental protection more.
2. This multistage formula sewage purification device for livestock-raising through setting up first motor, screw rod, movable block, screw, supplementary polished rod and scraper blade, can clear up metal filter, prevents that it from blockking up, influences the filter effect, sets up purifying box, ozone generator and active carbon adsorption tank, disinfects, purifies, adsorbs sewage, prevents to have the breeding of peculiar smell effusion or bacterium, environmental protection.
Drawings
FIG. 1 is a schematic perspective view of the structure of the box body of the present invention;
FIG. 2 is a schematic front sectional view of the structure of the box body of the present invention;
FIG. 3 is a schematic side sectional view of the structure of the solid-liquid separation tank of the present invention;
fig. 4 is an enlarged schematic view of the structure of the area a in fig. 2 according to the present invention.
In the figure: 1. a box body; 2. a pillar; 3. a solid-liquid separation tank; 4. a flocculation tank; 5. a filter; 6. a sterilizing box; 7. a purification box; 8. a water inlet; 9. a metal filter plate; 10. a first motor; 11. a screw; 12. a moving block; 13. a screw hole; 14. an auxiliary polish rod; 15. a squeegee; 16. a first connecting pipe; 17. a connecting valve; 18. a first dosing tube; 19. a second motor; 20. a first stirring frame; 21. a second dosing tube; 22. a third motor; 23. a second stirring frame; 24. a second connecting pipe; 25. a water pump; 26. an ozone generator; 27. an activated carbon adsorption tank; 28. and a water discharge pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, a multi-stage sewage purification device for livestock breeding comprises a box body 1, a plurality of support columns 2 are fixed at the bottom of the box body 1, a solid-liquid separation box 3 is fixedly installed at one side inside the box body 1, a flocculation box 4 is fixedly installed at one side of the solid-liquid separation box 3, a filter 5 is fixedly installed at one side of the flocculation box 4, a disinfection box 6 is fixedly installed at one side of the filter 5, a purification box 7 is fixedly installed at one side of the disinfection box 6, a water inlet 8 is fixedly installed at the top of the solid-liquid separation box 3, a metal filter plate 9 is fixedly installed inside the solid-liquid separation box 3, a first motor 10 is fixedly installed at one side of the solid-liquid separation box 3, a screw rod 11 is fixedly connected at one end of the first motor 10, a movable block 12 is movably installed outside the screw rod 11, a screw hole 13 is formed inside the movable block 12, and the screw rod 11 is matched with the screw hole 13, under the assistance of the auxiliary polish rod 14, a moving block 12 and a scraping plate 15 can be driven to move, the inner part of the moving block 12 is movably connected with the auxiliary polish rod 14, the bottom of the moving block 12 is fixedly connected with the scraping plate 15, the scraping plate 15 is attached to the surface of the metal filter plate 9, the metal filter plate 9 can be cleaned to prevent blockage and influence the filtering effect, a first connecting pipe 16 is fixedly connected between the solid-liquid separation box 3 and the flocculation box 4, the outer part of the first connecting pipe 16 is fixedly provided with a connecting valve 17, one side of the top of the flocculation box 4 is fixedly provided with a first dosing pipe 18, the top of the flocculation box 4 is fixedly provided with a second motor 19, the bottom of the second motor 19 is movably provided with a first stirring frame 20 for stirring the breeding sewage and the flocculating agent in the flocculation box 4, so that the flocculating agent and the breeding sewage are mixed more uniformly, the flocculation effect of the flocculating agent is improved, one side of the top of the disinfection box 6 is fixedly provided with a second dosing pipe 21, the top of the disinfection box 6 is fixedly provided with a third motor 22, the bottom of the third motor 22 is movably provided with a second stirring frame 23, the culture sewage and the disinfectant in the disinfection box 6 are stirred, so that the disinfectant and the culture sewage are mixed more uniformly, the disinfection effect of the disinfectant is improved, by arranging the solid-liquid separation box 3, the solid and the liquid in the culture sewage are filtered and separated, the subsequent purification treatment of the culture sewage is convenient, the flocculation box 4 is arranged, the first dosing pipe 18, the second motor 19, the first stirring frame 20 and the filter 5 are arranged, the sewage is flocculated and filtered, the cleaning effect is better, the disinfection box 6, the second dosing pipe 21, the third motor 22 and the second stirring frame 23 are arranged, the sewage is sterilized, the multi-stage treatment is realized, the sewage treatment effect is better, the environment is more protected, one side of the bottom of the disinfection box 6 is fixedly connected with a second connecting pipe 24, one end fixed connection of second connecting pipe 24 is at purifying box 7, the middle part fixed mounting of second connecting pipe 24 has water pump 25, one side fixed mounting of purifying box 7 has ozone generator 26, the inside fixed mounting of purifying box 7 has activated carbon adsorption tank 27, through setting up first motor 10, screw rod 11, movable block 12, screw 13, supplementary polished rod 14 and scraper blade 15, can clear up metal filter 9, prevent its jam, influence the filter effect, set up purifying box 7, ozone generator 26 and activated carbon adsorption tank 27, disinfect, purify, adsorb sewage, prevent having the breeding of peculiar smell effusion or having the bacterium, the environmental protection, bottom one side fixed mounting of purifying box 7 has drain pipe 28.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
The working principle is as follows: when in use, sewage enters the sewage purification device through the water inlet 8, solid and liquid in the aquaculture sewage are filtered and separated through the solid-liquid separation box 3 of the metal filter plate 9, so that subsequent purification treatment of the aquaculture sewage is facilitated, the solid-liquid separation box 3 is arranged to filter and separate the solid and liquid in the aquaculture sewage, so that subsequent purification treatment of the aquaculture sewage is facilitated, the first motor 10, the screw rod 11, the moving block 12, the screw hole 13, the auxiliary polished rod 14 and the scraper 15 are arranged, the first motor 10 operates to drive the screw rod 11 to rotate, the screw hole 13 is formed in the moving block 12, the screw rod 11 is matched with the screw hole 13, the moving block 12 and the scraper 15 can be driven to move under the assistance of the auxiliary polished rod 14, the scraper 15 is attached to the surface of the metal filter plate 9, so that the metal filter plate 9 can be cleaned, the blockage of the metal filter plate is prevented, and the filtering effect is influenced, opening the connecting valve 17, the sewage enters the flocculation tank 4 through the first connecting pipe 16, the flocculant is put into the flocculation tank 4 through the first dosing pipe 18, the second motor 19 drives the first stirring frame 20 to rotate, the aquaculture sewage and the flocculant in the flocculation tank 4 are stirred, so that the flocculant and the aquaculture sewage are mixed more uniformly, the flocculation effect of the flocculant is improved, the flocculated sewage is filtered through the filter 5, the cleaning effect is better, the sewage enters the disinfection tank 6 through the filter 5, the disinfectant is put into the disinfection tank 6 through the second dosing pipe 21, the third motor 22 drives the second stirring frame 23 to rotate, the aquaculture sewage and the disinfectant in the disinfection tank 6 are stirred, so that the disinfectant and the aquaculture sewage are mixed more uniformly, the disinfection effect of the disinfectant is improved, the sewage is guided into the purification tank 7 through the second connecting pipe 24 and the water pump 25, the purification box 7, the ozone generator 26 and the activated carbon adsorption box 27 are arranged to perform ozone sterilization and purification and activated carbon adsorption on the sewage, prevent peculiar smell from escaping or bacteria from breeding, protect the environment and finally discharge the sewage through the drainage pipe 28.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a multistage formula sewage purification device for livestock-raising, includes box (1), its characterized in that: the bottom of the box body (1) is fixed with a plurality of supporting columns (2), one side of the inside of the box body (1) is fixedly provided with a solid-liquid separation box (3), one side of the solid-liquid separation box (3) is fixedly provided with a flocculation box (4), one side of the flocculation box (4) is fixedly provided with a filter (5), one side of the filter (5) is fixedly provided with a disinfection box (6), one side of the disinfection box (6) is fixedly provided with a purification box (7), the top of the solid-liquid separation box (3) is fixedly provided with a water inlet (8), the inside of the solid-liquid separation box (3) is fixedly provided with a metal filter plate (9), a first connecting pipe (16) is fixedly connected between the solid-liquid separation box (3) and the flocculation box (4), the outside of the first connecting pipe (16) is fixedly provided with a connecting valve (17), one side of the bottom of the disinfection box (6) is fixedly connected with a second connecting pipe (24), one end fixed connection of second connecting pipe (24) is in purifying box (7), the middle part fixed mounting of second connecting pipe (24) has water pump (25), bottom one side fixed mounting of purifying box (7) has drain pipe (28).
2. The multi-stage sewage purification device for livestock breeding according to claim 1, characterized in that: one side of the solid-liquid separation box (3) is fixedly provided with a first motor (10), one end of the first motor (10) is fixedly connected with a screw rod (11), the outer portion of the screw rod (11) is movably provided with a moving block (12), a screw hole (13) is formed in the moving block (12), the inner portion of the moving block (12) is movably connected with an auxiliary polished rod (14), and the bottom of the moving block (12) is fixedly connected with a scraper (15).
3. The multi-stage sewage purification device for livestock breeding according to claim 1, characterized in that: the top one side fixed mounting of flocculation case (4) has first drug delivery pipe (18), the top fixed mounting of flocculation case (4) has second motor (19), the bottom movable mounting of second motor (19) has first stirring frame (20).
4. The multi-stage sewage purification device for livestock breeding according to claim 1, characterized in that: a second dosing pipe (21) is fixedly mounted on one side of the top of the sterilizing box (6), a third motor (22) is fixedly mounted on the top of the sterilizing box (6), and a second stirring frame (23) is movably mounted at the bottom of the third motor (22).
5. The multi-stage sewage purification device for livestock breeding according to claim 1, characterized in that: one side fixed mounting of purifying box (7) has ozone generator (26), the inside fixed mounting of purifying box (7) has activated carbon adsorption case (27).
6. The multi-stage sewage purification device for livestock breeding according to claim 2, characterized in that: the screw rod (11) is matched with the screw hole (13).
7. The multi-stage sewage purification device for livestock breeding according to claim 2, characterized in that: the scraper (15) is attached to the surface of the metal filter plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120039852.7U CN214327399U (en) | 2021-01-07 | 2021-01-07 | Multi-section sewage purification device for livestock breeding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120039852.7U CN214327399U (en) | 2021-01-07 | 2021-01-07 | Multi-section sewage purification device for livestock breeding |
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| Publication Number | Publication Date |
|---|---|
| CN214327399U true CN214327399U (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120039852.7U Expired - Fee Related CN214327399U (en) | 2021-01-07 | 2021-01-07 | Multi-section sewage purification device for livestock breeding |
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| CN (1) | CN214327399U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114230034A (en) * | 2021-12-21 | 2022-03-25 | 江苏羽艺家纺制品有限公司 | Eiderdown waste water rapid treatment purifier |
| CN115490371A (en) * | 2022-10-27 | 2022-12-20 | 南通市康桥油脂有限公司 | Effluent treatment plant is used in stearate production |
| CN116159366A (en) * | 2023-04-19 | 2023-05-26 | 河北唐盛牧业股份有限公司 | Pig farm is with breeding sewage filter equipment who has self-cleaning function |
| CN117049753A (en) * | 2023-10-11 | 2023-11-14 | 广东思绿环保科技股份有限公司 | Full-automatic purifier of sewage treatment |
| CN117302285A (en) * | 2023-11-30 | 2023-12-29 | 吉林铁道职业技术学院 | Drainage device for high-speed motor train unit |
-
2021
- 2021-01-07 CN CN202120039852.7U patent/CN214327399U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114230034A (en) * | 2021-12-21 | 2022-03-25 | 江苏羽艺家纺制品有限公司 | Eiderdown waste water rapid treatment purifier |
| CN115490371A (en) * | 2022-10-27 | 2022-12-20 | 南通市康桥油脂有限公司 | Effluent treatment plant is used in stearate production |
| CN116159366A (en) * | 2023-04-19 | 2023-05-26 | 河北唐盛牧业股份有限公司 | Pig farm is with breeding sewage filter equipment who has self-cleaning function |
| CN117049753A (en) * | 2023-10-11 | 2023-11-14 | 广东思绿环保科技股份有限公司 | Full-automatic purifier of sewage treatment |
| CN117302285A (en) * | 2023-11-30 | 2023-12-29 | 吉林铁道职业技术学院 | Drainage device for high-speed motor train unit |
| CN117302285B (en) * | 2023-11-30 | 2024-02-20 | 吉林铁道职业技术学院 | Drainage device for high-speed motor train unit |
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Granted publication date: 20211001 |