CN213738844U - Small particle impurity absorption and precipitation device for sewage treatment - Google Patents
Small particle impurity absorption and precipitation device for sewage treatment Download PDFInfo
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- CN213738844U CN213738844U CN202022265887.0U CN202022265887U CN213738844U CN 213738844 U CN213738844 U CN 213738844U CN 202022265887 U CN202022265887 U CN 202022265887U CN 213738844 U CN213738844 U CN 213738844U
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- centrifuge
- water
- water discharge
- pipe
- centrifugal machine
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- 239000010865 sewage Substances 0.000 title claims abstract description 33
- 239000012535 impurity Substances 0.000 title claims abstract description 27
- 239000002245 particle Substances 0.000 title claims abstract description 24
- 238000010521 absorption reaction Methods 0.000 title description 3
- 238000001556 precipitation Methods 0.000 title description 3
- 238000001914 filtration Methods 0.000 claims abstract description 32
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 239000006228 supernatant Substances 0.000 claims abstract description 20
- 239000013049 sediment Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 98
- 230000005540 biological transmission Effects 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims 6
- 238000004065 wastewater treatment Methods 0.000 claims 6
- 238000005119 centrifugation Methods 0.000 abstract description 14
- 239000012530 fluid Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 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
- 238000010000 carbonizing Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
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Abstract
The utility model relates to a sewage treatment technical field specifically is a tiny particle impurity absorbs sediment device for sewage treatment, including the filtering ponds, the top surface and the bottom surface of filtering ponds are two first drain pipes of fixedly connected with respectively, first centrifuge is installed to the below of filtering ponds, first centrifuge's right side upper portion is connected with first drain pipe, first centrifuge's right side sub-unit connection has the second drain pipe, second centrifuge is installed to one side of first centrifuge, second centrifuge's top is connected with third drain pipe and supernatant collecting pipe respectively. The utility model discloses a two centrifuge cooperate jointly, adopt the mode of repeated centrifugation many times to absorb, filter the tiny particle impurity in the sewage, and first centrifuge is drum centrifuge, and second centrifuge all is equipped with the filter membrane for disc centrifuge among the centrifuge, and last supernatant passes through the supernatant discharge port and discharges.
Description
Technical Field
The utility model relates to a sewage treatment technical field specifically is a tiny particle impurity absorbs sediment device for sewage treatment.
Background
Sewage treatment is a process of purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and increasingly enters the daily life of common people, small-particle impurities in the existing sewage treatment process are difficult to absorb and treat, so that the sewage treatment efficiency is low, and therefore, the small-particle impurity absorption and precipitation device for sewage treatment is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tiny particle impurity absorbs sediment device for sewage treatment to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a tiny particle impurity absorbs sediment device for sewage treatment, includes the filtering ponds, the top surface and the bottom surface of filtering ponds are two first drain pipes of fixedly connected with respectively, first centrifuge is installed to the below of filtering ponds, first centrifuge's right side upper portion is connected with first drain pipe, first centrifuge's right side sub-unit connection has the second drain pipe, second centrifuge is installed to one side of first centrifuge, second centrifuge's top is connected with third drain pipe and supernatant collecting pipe respectively.
Preferably, the filtering tank comprises a filtering tank wall, and a sandstone layer, an activated carbon layer and a filter membrane layer are sequentially arranged in the filtering tank surrounded by the filtering tank wall from top to bottom.
Preferably, the first centrifuge comprises a first centrifuge housing, a first water inlet and a first water outlet are arranged at the right side of the first centrifuge housing, the first water inlet is connected with a first water drainage pipe, the first water drainage port is connected with a second water drainage pipe, a roller is arranged in the first centrifugal machine, the roller comprises a roller wall, a plurality of material passing holes are arranged on the roller wall, a first filter membrane is arranged on the inner side of the wall of the roller, a first motor is arranged below the roller, two first transmission shafts are arranged on the left side of the first centrifuge shell, a first transmission belt is installed between the two first transmission shafts, the right end of the first transmission shaft on the upper portion penetrates through the first centrifuge shell and is coaxially fixed with the drum wall, and the right end of the first transmission shaft on the lower portion penetrates through the first centrifuge shell and is coaxially fixed with an output shaft of a first motor.
Preferably, the second centrifuge comprises a second centrifuge shell, a rotary drum is arranged inside the second centrifuge shell, a core barrel is arranged inside the rotary drum, a second filter membrane is arranged on the inner wall of the core barrel, a plurality of discs are fixedly arranged on the outer wall of the core barrel and distributed at equal intervals, a second water inlet is arranged at the top end of the core barrel and connected with a second water discharge pipe, a second transmission shaft is fixedly welded on the bottom surface of the core barrel, a second motor is arranged below the rotary drum, one end of the second transmission shaft penetrates through the bottom of the rotary drum and is coaxially fixed with an output shaft of the second motor, a plurality of motor fixing blocks are arranged on two sides of the second motor, the bottom surfaces of the motor fixing blocks and the inner bottom surface of the second centrifuge shell are fixed through bolts, a supernatant discharge port is arranged on one side of the top of the rotary drum, and the supernatant fluid outlet is connected with a supernatant fluid collecting pipe, the bottom of the rotary drum is connected with a second water outlet, and the second water outlet is connected with a third water outlet pipe.
Preferably, one end of the second water discharge pipe is fixedly connected with the first centrifuge, and the other end of the second water discharge pipe is fixedly connected with the second centrifuge.
Preferably, the second drain pipe and the third drain pipe are both provided with a water stop valve.
Preferably, one end of the third water discharge pipe is connected with the first water discharge pipe through a connecting piece, and the other end of the third water discharge pipe passes through the second centrifuge shell and is connected with the second water discharge port at the bottom of the rotary drum.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model adopts two centrifuges to cooperate together, small particle impurities in sewage are absorbed and filtered by adopting a repeated centrifugation mode for many times, the first centrifuger is a drum type centrifuger, the second centrifuger is a disc type centrifuger, macromolecular particles and partial impurities are filtered by a filtering tank before the sewage enters the first centrifuger, the sewage after the sewage flows into the first centrifuger and after the sewage is centrifuged for the first time flows into the second centrifuger through a first water outlet and a second water outlet pipe, a second filter membrane is arranged in a core barrel of the second centrifuger for the second centrifugation, the sewage after the second centrifugation enters a first water outlet pipe again through the bottom of a rotary drum and a second water outlet and a third water outlet pipe and then enters the first centrifuger, and (4) repeating the centrifugal operation, adsorbing small particle impurities in the sewage on the filter membrane and forming a filter cake, and discharging the final supernatant through a supernatant outlet.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a first centrifuge of the present invention;
FIG. 3 is a schematic view of a second centrifuge of the present invention;
FIG. 4 is a second schematic view of a second centrifuge of the present invention;
fig. 5 is a schematic view of the middle filtering tank of the present invention.
In the figure: 1. a first centrifuge; 10. a first centrifuge housing; 100. a first water inlet; 101. a first drain port; 11. a drum; 110. a drum wall; 111. a material passing hole; 12. a first motor; 120. a first drive shaft; 121. a first drive belt; 13. a first filter membrane;
2. a second centrifuge; 20. a second centrifuge housing; 21. a drum; 210. a second water inlet; 211 a second water outlet; 212. a supernatant discharge port; 22. a core barrel; 23. a disc; 24. a second motor; 240. a second drive shaft; 241. a motor fixing block; 25. a second filter membrane;
3. a filtration tank; 30. a sandstone layer; 31. an activated carbon layer; 32. a filter membrane layer; 33. a wall of the filtration tank;
4. a first drain pipe; 5. a second drain pipe; 6. a third drain pipe; 7. a supernatant collecting pipe; 8. and a water stop valve.
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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-5, the present invention provides a technical solution:
the utility model provides a tiny particle impurity absorbs sediment device for sewage treatment, including filtering ponds 3, filtering ponds 3's top surface and bottom surface are two first drain pipes 4 of fixedly connected with respectively, first centrifuge 1 is installed to filtering ponds 3's below, first centrifuge 1's right side upper portion is connected with first drain pipe 4, first centrifuge 1's right side sub-unit connection has second drain pipe 5, second centrifuge 2 is installed to one side of first centrifuge 1, second centrifuge 2's top is connected with third drain pipe 6 and supernatant collecting pipe 7 respectively.
Further, the filtering tank 3 comprises a filtering tank wall 33, and a sand layer 30, an activated carbon layer 31 and a filtering membrane layer 32 are sequentially arranged in the filtering tank 3 enclosed by the filtering tank wall 33 from top to bottom. Large particle impurities in the sewage are filtered through various filtering materials in the filtering tank 3, and partial small particle impurities are adsorbed.
Further, the first centrifuge 1 includes a first centrifuge housing 10, a first water inlet 100 and a first water outlet 101 are disposed on the right side of the first centrifuge housing 10, the first water inlet 100 is connected to the first water outlet 4, the first water outlet 101 is connected to the second water outlet 5, a drum 11 is mounted inside the first centrifuge 1, the drum 11 includes a drum wall 110, a plurality of material passing holes 111 are disposed on the drum wall 110, a first filter membrane 13 is mounted on the inner side of the drum wall 110, a first motor 12 is mounted below the drum 11, two first transmission shafts 120 are disposed on the left side of the first centrifuge housing 10, a first transmission belt 121 is mounted between the two first transmission shafts 120, the right end of the upper first transmission shaft 120 passes through the first centrifuge housing 10 and is coaxially fixed with the drum wall 110, and the right end of the lower first transmission shaft 120 passes through the first centrifuge housing 10 and is coaxially fixed with the output shaft of the first motor 12. The sewage flows into the roller 11 inside the first centrifuge 1 from the first water inlet 100, the rotation of the roller 11 inside the first centrifuge 1 is driven by the rotation of the first motor 12, the filter membrane 13 installed inside the roller wall 110 can adsorb and filter small molecular impurities, and the centrifuged water is discharged from the first water outlet 101.
Further, the second centrifuge 2 includes a second centrifuge housing 20, a rotary drum 21 is installed inside the second centrifuge housing 20, a core cylinder 22 is installed inside the rotary drum 21, a second filter membrane 25 is installed on the inner wall of the core cylinder 22, a plurality of disks 23 are fixedly installed on the outer wall of the core cylinder 22 and are distributed at equal intervals, a second water inlet 210 is arranged at the top end of the core cylinder 22, the second water inlet 210 is connected with a second water discharge pipe 5, a second transmission shaft 240 is fixedly welded to the bottom surface of the core cylinder 22, a second motor 24 is arranged below the rotary drum 21, one end of the second transmission shaft 240 penetrates through the bottom of the rotary drum 21 and is coaxially fixed with an output shaft of the second motor 24, a plurality of motor fixing blocks 241 are installed on two sides of the second motor 24, the bottom surfaces of the motor fixing blocks 241 are fixed to the bottom surface inside the second centrifuge housing 20 through bolts, a supernatant discharge port 212 is installed on one side of the top of the rotary drum 21, the supernatant fluid outlet 212 is connected with a supernatant fluid collecting pipe 7, the bottom of the rotary drum 21 is connected with a second water outlet 211, and the second water outlet 211 is connected with a third water outlet 6. The water after the first centrifugation reaches the second water inlet 210 through the second water discharge pipe 5 and reaches the inside of the rotary drum 21, the second motor 24 drives the rotary drum 21 to rotate, the second filter membrane 25 is installed on the inner wall of the core cylinder 22, a plurality of disc sheets 23 which are distributed at equal intervals are fixedly installed on the outer wall, the sewage can be subjected to the second centrifugation, small particle impurities are adsorbed by the second filter membrane 25 again, the water after the second centrifugation is collected into the first centrifuge again through the third water discharge pipe 6 through the second water discharge port 211 at the bottom of the rotary drum 21 if the water is still dirty, the water is subjected to the circulating centrifugation, and the water is collected through the clear liquid collecting pipe 7 connected to the clear liquid discharge port 212 after the water quality reaches the standard.
Furthermore, one end of the second water discharge pipe 5 is fixedly connected with the first centrifuge 1, and the other end of the second water discharge pipe 5 is fixedly connected with the second centrifuge 2. The water centrifuged by the first centrifuge 1 enters the second centrifuge 2 through the second water discharge pipe 5.
Further, a water stop valve 8 is mounted on each of the second drain pipe 5 and the third drain pipe 6. Whether to continue circulating centrifugation can be determined according to the centrifuged water quality, so that the supernatant can be conveniently collected.
Further, one end of the third water discharge pipe 6 is connected to the first water discharge pipe 4 through a connector, and the other end of the third water discharge pipe 6 passes through the second centrifuge housing 20 to be connected to the second water discharge port 211 at the bottom of the rotary drum 21. If the water after the secondary centrifugation does not reach the standard, the water is converged into the first water discharge pipe 4 through the third water discharge pipe 6 and enters the first centrifuge 1 again for centrifugal filtration.
The active carbon is black porous solid carbon, is produced by crushing and molding coal or carbonizing and activating uniform coal particles, mainly contains carbon and a small amount of elements such as oxygen, hydrogen, sulfur, nitrogen, chlorine and the like, and has a specific surface area of 500-1700 m2The adsorbent has strong adsorption performance between/g, and is an industrial adsorbent with wide application.
The aperture of the filter membrane in the utility model is 0.2-0.3 μm.
Specifically, sewage enters the filter tank 3 through the first drainage pipe 4, large granular impurities and microorganisms in the sewage are absorbed and filtered, the filtered sewage flows into the drum 11 in the first centrifuge 1 through the first water inlet 100, the drum 11 in the first centrifuge 1 is driven to rotate through the rotation of the first motor 12, the first filter membrane 13 arranged in the drum wall 110 can adsorb and filter small molecular impurities, the water after the first centrifugation is discharged from the first drainage port 101, the water after the first centrifugation reaches the inside of the drum 21 through the second drainage pipe 5, the second motor 24 drives the drum 21 to rotate, the second filter membrane 25 is arranged on the inner wall of the core barrel 22, a plurality of disc sheets 23 distributed at equal intervals are fixedly arranged on the outer wall of the core barrel 22, the sewage can be centrifuged for the second time, the small granular impurities are adsorbed again through the second filter membrane 25, and the water after the second centrifugation, if the water is still dirty, the water after the second centrifugation sinks into the third drainage pipe 6 through the second drainage port 211 at the bottom of the drum 21 And the water draining pipe 4 enters the first centrifuge 1 again, and is circularly centrifuged, and the water is collected through a clear liquid collecting pipe 7 connected to a clear liquid draining port 212 after the water quality reaches the standard.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a tiny particle impurity absorbs sediment device for sewage treatment, includes filtering ponds (3), its characterized in that: the top surface and the bottom surface of filtering ponds (3) are two first drain pipes (4) of fixedly connected with respectively, first centrifuge (1) is installed to the below of filtering ponds (3), the right side upper portion of first centrifuge (1) is connected with first drain pipe (4), the right side sub-unit connection of first centrifuge (1) has second drain pipe (5), second centrifuge (2) is installed to one side of first centrifuge (1), the top of second centrifuge (2) is connected with third drain pipe (6) and supernatant collecting pipe (7) respectively.
2. The small particle impurity absorbing and precipitating apparatus for wastewater treatment according to claim 1, wherein: the filtering tank (3) comprises a filtering tank wall (33), and a sandstone layer (30), an activated carbon layer (31) and a filter membrane layer (32) are sequentially arranged inside the filtering tank (3) which is formed by enclosing the filtering tank wall (33) from top to bottom.
3. The small particle impurity absorbing and precipitating apparatus for wastewater treatment according to claim 1, wherein: the first centrifugal machine (1) comprises a first centrifugal machine shell (10), a first water inlet (100) and a first water discharge port (101) are arranged on the right side of the first centrifugal machine shell (10), the first water inlet (100) is connected with a first water discharge pipe (4), the first water discharge port (101) is connected with a second water discharge pipe (5), a roller (11) is arranged inside the first centrifugal machine (1), the roller (11) comprises a roller wall (110), a plurality of material passing holes (111) are formed in the roller wall (110), a first filter membrane (13) is arranged on the inner side of the roller wall (110), a first motor (12) is arranged below the roller (11), two first transmission shafts (120) are arranged on the left side of the first centrifugal machine shell (10), and a first transmission belt (121) is arranged between the two first transmission shafts (120), the right end of the upper first transmission shaft (120) penetrates through the first centrifugal machine shell (10) and is coaxially fixed with the drum wall (110), and the right end of the lower first transmission shaft (120) penetrates through the first centrifugal machine shell (10) and is coaxially fixed with the output shaft of the first motor (12).
4. The small particle impurity absorbing and precipitating apparatus for wastewater treatment according to claim 1, wherein: the second centrifuge (2) comprises a second centrifuge shell (20), a rotary drum (21) is arranged inside the second centrifuge shell (20), a core barrel (22) is arranged inside the rotary drum (21), a second filter membrane (25) is arranged on the inner wall of the core barrel (22), a plurality of discs (23) distributed at equal intervals are fixedly arranged on the outer wall of the core barrel (22), a second water inlet (210) is arranged at the top end of the core barrel (22), the second water inlet (210) is connected with a second water discharge pipe (5), a second transmission shaft (240) is fixedly welded on the bottom surface of the core barrel (22), a second motor (24) is arranged below the rotary drum (21), one end of the second transmission shaft (240) penetrates through the bottom of the rotary drum (21) and is coaxially fixed with an output shaft of the second motor (24), a plurality of motor fixing blocks (241) are arranged on two sides of the second motor (24), the bottom surfaces of the motor fixing blocks (241) and the inner bottom surface of the second centrifuge shell (20) are fixed through bolts, a supernatant outlet (212) is installed on one side of the top of the rotary drum (21), a supernatant collecting pipe (7) is connected to the supernatant outlet (212), a second water outlet (211) is connected to the bottom of the rotary drum (21), and a third water outlet (6) is connected to the second water outlet (211).
5. The small particle impurity absorbing and precipitating apparatus for wastewater treatment according to claim 1, wherein: one end of the second water discharge pipe (5) is fixedly connected with the first centrifugal machine (1), and the other end of the second water discharge pipe (5) is fixedly connected with the second centrifugal machine (2).
6. The small particle impurity absorbing and precipitating apparatus for wastewater treatment according to claim 1, wherein: and water stop valves (8) are respectively arranged on the second water drainage pipe (5) and the third water drainage pipe (6).
7. The small particle impurity absorbing and precipitating apparatus for wastewater treatment according to claim 1, wherein: one end of the third water discharge pipe (6) is connected with the first water discharge pipe (4) through a connecting piece, and the other end of the third water discharge pipe (6) penetrates through the second centrifugal machine shell (20) to be connected with a second water discharge port (211) at the bottom of the rotary drum (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022265887.0U CN213738844U (en) | 2020-10-11 | 2020-10-11 | Small particle impurity absorption and precipitation device for sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022265887.0U CN213738844U (en) | 2020-10-11 | 2020-10-11 | Small particle impurity absorption and precipitation device for sewage treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213738844U true CN213738844U (en) | 2021-07-20 |
Family
ID=76848782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022265887.0U Expired - Fee Related CN213738844U (en) | 2020-10-11 | 2020-10-11 | Small particle impurity absorption and precipitation device for sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213738844U (en) |
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2020
- 2020-10-11 CN CN202022265887.0U patent/CN213738844U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210720 |
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| CF01 | Termination of patent right due to non-payment of annual fee |