CN113426172A - Energy-concerving and environment-protective waste water recovery processing apparatus that uses - Google Patents
Energy-concerving and environment-protective waste water recovery processing apparatus that uses Download PDFInfo
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- CN113426172A CN113426172A CN202110733141.4A CN202110733141A CN113426172A CN 113426172 A CN113426172 A CN 113426172A CN 202110733141 A CN202110733141 A CN 202110733141A CN 113426172 A CN113426172 A CN 113426172A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 25
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 239000010865 sewage Substances 0.000 claims abstract description 44
- 238000011282 treatment Methods 0.000 claims abstract description 18
- 238000004064 recycling Methods 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract description 8
- 240000007643 Phytolacca americana Species 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 238000005188 flotation Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000011221 initial treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004075 wastewater filtration Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses an energy-saving and environment-friendly wastewater recovery and treatment device which comprises a base, a sewage tank and a sundry tank, wherein the base is rotatably connected with a lower toothed ring, the lower toothed ring is fixedly connected with an end face toothed disc, the base is provided with a motor, the motor is provided with a motor gear, and the motor gear is meshed with the end face toothed disc; the base rotates and is connected with well core rod, well core rod fixedly connected with lower gear, and lower gear is connected with the ring gear meshing down, well core rod fixedly connected with connecting block, well core rod rotate and are connected with the connection fluted disc. When the automatic cleaning device is used, sundries on the surface of the filter screen are regularly and automatically cleaned in primary sewage treatment, so that the filter screen is prevented from being blocked due to excessive sundries accumulation, and the filtering efficiency of sewage is improved; inserting a fine needle into the filtering holes of the filter screen to poke the sundries down, so as to prevent the sundries from being blocked in the filtering holes or attached to the surface of the filter screen; sundries fall into the sundry tank, and the centralized processing of workers is facilitated.
Description
Technical Field
The invention relates to the field of wastewater treatment, in particular to an energy-saving and environment-friendly wastewater recovery and treatment device.
Background
The primary treatment of sewage is also called as physical sewage treatment. Through simple precipitation, filtration or proper aeration, suspended matters in the sewage are removed, the pH value is adjusted, and the rotting degree of the sewage is reduced. The treatment can be composed of screening, gravity precipitation, flotation and other methods which are connected in series, and most of particulate matters with the particle size of more than 100 microns in the sewage are removed. Larger substances can be removed by screening; the inorganic particles and the organic particles with the relative density of more than 1 and the cohesiveness can be removed by gravity precipitation; flotation removes particles having a relative density of less than 1.
However, the filter screen used in the primary treatment of wastewater in the prior art is usually fixedly arranged, and the sundries and garbage after wastewater filtration can be accumulated and cover the meshes of the filter screen, so that the filter effect of the filter screen is reduced, the filtered sundries are difficult to concentrate, and the sundries are excessively troublesome to clean. Therefore, the invention provides an energy-saving and environment-friendly wastewater recycling device to solve the problems.
Disclosure of Invention
The invention aims to provide an energy-saving and environment-friendly wastewater recovery and treatment device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an energy-saving and environment-friendly wastewater recovery and treatment device comprises a base, a sewage tank and a sundry tank, wherein the base is rotatably connected with a lower toothed ring, the lower toothed ring is fixedly connected with an end face toothed disc, the base is provided with a motor, the motor is provided with a motor gear, and the motor gear is meshed with the end face toothed disc;
the base is rotatably connected with a central rod, the central rod is fixedly connected with a lower gear, the lower gear is meshed with a lower toothed ring, the central rod is fixedly connected with a connecting block, and the central rod is rotatably connected with a connecting fluted disc;
the side walls of two sides of the connecting block are fixedly connected with connecting frames, the connecting frames are connected with sliding rods in a sliding mode, the sliding rods are connected with rotating rods in a rotating mode, the rotating rods are fixedly connected with connecting frames, the rotating rods are fixedly connected with rotating rod gears, and the connecting frames are provided with filter screens;
the sundry groove is fixedly connected with a second connecting rod, and the second connecting rod is fixedly connected with a toothed plate;
the connecting fluted disc is surrounded by a cable, two ends of the cable are respectively fixedly connected with the two sliding rods, and the connecting block and the connecting frame are fixedly connected with a plurality of guide wheels.
As a further scheme of the invention, an upper gear ring is fixedly connected between the end face fluted disc and the lower gear ring, the central rod is rotatably connected with a sleeve, and the sleeve is fixedly connected with an upper gear.
As a further scheme of the invention, the upper gear is meshed with the upper gear ring, and the upper gear is fixedly connected with the upright post.
As a further scheme of the invention, a reinforcing rod is fixedly connected between every two adjacent connecting frames, and the connecting frames are fixedly connected with supporting plates.
As a further scheme of the invention, the sliding rod is fixedly connected with a limiting plate, and the sewage tank is provided with a contact switch.
As a further scheme of the invention, the sewage tank is provided with a sewage discharge pipe, the sewage tank is provided with a connecting pipe, and one end of the connecting pipe, which is far away from the sewage tank, is provided with a reservoir.
As a further aspect of the present invention, the sundry tank is fixedly connected with a first connecting rod, and the first connecting rod is fixedly connected with a fixing plate.
As a further proposal of the invention, the fixed plate is fixedly connected with a needle plate, and the surface of the needle plate is provided with a plurality of fine needles which are uniformly arranged.
As a further scheme of the invention, the side walls of two sides of the connecting block are respectively provided with a sliding groove, one sliding groove is connected with a sliding block in a sliding manner, and the other sliding groove is connected with a fixing frame in a sliding manner.
As a further scheme of the invention, the sliding block is fixedly connected with a rack, the rack is fixedly connected with a cross frame, and the cross frame is fixedly connected with the fixed frame.
Compared with the prior art, the invention has the beneficial effects that:
1. in primary sewage treatment, impurities on the surface of the filter screen are regularly and automatically cleaned, so that the filter screen is prevented from being blocked due to excessive accumulation of the impurities, and the filtering efficiency of sewage is improved;
2. inserting a fine needle into the filtering holes of the filter screen to poke the sundries down, so as to prevent the sundries from being blocked in the filtering holes or attached to the surface of the filter screen; sundries fall into the sundry tank, so that the centralized processing by workers is facilitated;
3. the water storage tank is used for temporarily storing sewage, so that the water discharge pipe can continuously discharge water, the water discharge pipe is prevented from being closed in the moving process of the filter screen, and the sewage treatment efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of an energy-saving and environment-friendly wastewater recycling and treating apparatus.
FIG. 2 is a view showing an internal structure of a connection frame in an energy-saving and environment-friendly wastewater recycling apparatus.
FIG. 3 is a connection diagram of an upper ring gear and a lower ring gear in the wastewater treatment apparatus for energy conservation and environmental protection.
FIG. 4 is a connection diagram of a contact switch and a sewage tank in the wastewater treatment apparatus for energy saving and environmental protection.
FIG. 5 is a sectional view of a center rod in an energy-saving and environment-friendly wastewater recycling device.
FIG. 6 is a schematic structural view of a needle plate in an energy-saving and environment-friendly wastewater recycling device.
FIG. 7 is a connection diagram of a rack and a connection fluted disc in the waste water recovery and treatment device for energy conservation and environmental protection.
FIG. 8 is a connection diagram of a rack and a cross frame in the wastewater recovery and treatment device for energy conservation and environmental protection.
In the figure: 1. a base; 2. a lower toothed ring; 201. an upper toothed ring; 3. an end face fluted disc; 4. a lower gear; 5. an upper gear; 501. a column; 6. a motor; 601. a motor gear; 7. connecting blocks; 701. a chute; 702. a slider; 703. a rack; 704. a fixed mount; 8. a connecting frame; 801. a guide wheel; 9. a reinforcing rod; 10. a support plate; 11. a slide bar; 12. a limiting plate; 13. a rotating rod gear; 14. a contact switch; 15. a connecting frame; 1501. a rotating rod; 16. filtering with a screen; 17. a sewage tank; 18. a connecting pipe; 19. a reservoir; 20. a blow-off pipe; 21. a sundry tank; 22. a first connecting rod; 23. a fixing plate; 24. a needle plate; 2401. fine needles; 25. a second connecting rod; 26. a toothed plate; 27. a center pole; 2701. a sleeve; 28. connecting a fluted disc; 29. a cable; 30. a cross frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, in an embodiment of the present invention, an energy-saving and environment-friendly wastewater recycling device includes a base 1, a sewage tank 17, and a sundry tank 21, where the base 1 is rotatably connected to a lower gear ring 2, the lower gear ring 2 is fixedly connected to an end face gear ring 3, an upper gear ring 201 is fixedly connected between the end face gear ring 3 and the lower gear ring 2, the base 1 is provided with a motor 6, the motor 6 is provided with a motor gear 601, and the motor gear 601 is engaged with the end face gear ring 3;
the base 1 is rotatably connected with a central rod 27, the central rod 27 is fixedly connected with a lower gear 4, the lower gear 4 is meshed with a lower gear ring 2, the central rod 27 is rotatably connected with a sleeve 2701, the sleeve 2701 is fixedly connected with an upper gear 5, the upper gear 5 is meshed with an upper gear ring 201, the central rod 27 is fixedly connected with a connecting block 7, and the central rod 27 is rotatably connected with a connecting fluted disc 28;
the side walls of two sides of each connecting block 7 are fixedly connected with connecting frames 8, a reinforcing rod 9 is fixedly connected between every two adjacent connecting frames 8, the connecting frames 8 are fixedly connected with supporting plates 10, the connecting frames 8 are slidably connected with sliding rods 11, the sliding rods 11 are rotatably connected with rotating rods 1501, the rotating rods 1501 are fixedly connected with connecting frames 15, the rotating rods 1501 are fixedly connected with rotating rod gears 13, the connecting frames 15 are provided with filter screens 16, and the sliding rods 11 are fixedly connected with limiting plates 12;
the sewage tank 17 is provided with a contact switch 14, the sewage tank 17 is provided with a sewage discharge pipe 20, the sewage tank 17 is provided with a connecting pipe 18, and one end of the connecting pipe 18, which is far away from the sewage tank 17, is provided with a reservoir 19;
the sundries tank 21 is fixedly connected with a first connecting rod 22, the first connecting rod 22 is fixedly connected with a fixing plate 23, the fixing plate 23 is fixedly connected with a needle plate 24, the surface of the needle plate 24 is provided with a plurality of fine needles 2401 which are uniformly arranged, the sundries tank 21 is fixedly connected with a second connecting rod 25, and the second connecting rod 25 is fixedly connected with a toothed plate 26;
the connecting fluted disc 28 is surrounded by a cable 29, two ends of the cable 29 are respectively fixedly connected with the two sliding rods 11, the connecting block 7 and the connecting frame 8 are fixedly connected with a plurality of guide wheels 801, the side walls of two sides of the connecting block 7 are respectively provided with a sliding groove 701, one sliding groove 701 is slidably connected with a sliding block 702, the other sliding groove 701 is slidably connected with a fixing frame 704, the sliding block 702 is fixedly connected with a rack 703, the rack 703 is fixedly connected with a cross frame 30, the cross frame 30 is fixedly connected with the fixing frame 704, and the upper gear 5 is fixedly connected with a stand column 501.
The working principle of the invention is as follows:
the motor gear 601 is driven to rotate by the motor 6, the motor gear 601 is meshed with the end face fluted disc 3 to rotate, the end face fluted disc 3 drives the upper toothed ring 201 and the lower toothed ring 2 to rotate, the upper toothed ring 201 and the lower toothed ring 2 lack a part of teeth, the upper toothed ring 201 is meshed with the upper gear 5, the lower toothed ring 2 and the lower gear 4 are in a non-meshed state, the upper toothed wheel 5 drives the upright post 501 to rotate, the upright post 501 is matched with the cross frame 20 to enable the rack 703 to move in a reciprocating manner, the rack 703 is meshed with the connecting fluted disc 28 to rotate, the connecting fluted disc 28 is matched with the cable 29 to enable the slide bar 11 on one side of the sundry groove 21 to ascend and the slide bar 11 on one side of the sewage groove 17 to descend, so as to drive the filter screen 16 to descend, the filter screen 16 enters the sewage groove 17 to discharge sewage into the sewage groove 17, various large sundries in the sewage are filtered by the filter screen 16, the sewage groove 17 is full, the rack 703 continues to move to drive the filter screen 16 to ascend and reset, and the lower toothed ring 2 is further meshed with the lower gear 4, the upper toothed ring 201 and the upper gear 5 are in a non-meshed state, the rack 703 is stopped, the lower gear 4 drives the central rod 27 to rotate, the central rod 27 drives the connecting block 7, the connecting frame 8, the sliding rod 11 rotating rod 1501, the connecting frame 15 and the filter screen 16 to rotate, the filter screen 16 rotates towards the direction of the sundry groove 21, the rotating rod gear 13 is meshed with the toothed plate 26 to rotate, the connecting frame 15 and the filter screen 16 are overturned, sundries on the surface of the filter screen 16 fall into the sundry groove 21, the filter screen 16 rotates, the rotating rod gear 13 is meshed with the toothed plate 26 again, and the filter screen 16 is overturned and reset;
when the filter screen 16 at one side of the sewage tank 17 descends, the filter screen 16 at one side of the sundries tank 21 ascends to be in contact with the needle plate 24, and the fine needles 2401 are inserted into the filter holes of the filter screen 16 to poke the sundries so as to prevent the sundries from being blocked in the filter holes or attached to the surface of the filter screen 16; sundries fall into the sundry tank 21, so that the centralized processing by workers is facilitated;
firstly, sewage is placed into the water storage tank 19, the sliding rod 11 descends to drive the limiting plate 13 to be in contact with the contact switch 14, the connecting pipe 18 is opened, the sewage discharge pipe 20 is closed, the sewage enters the sewage tank 17, the limiting plate 13 is separated from the contact switch 14 when the filter screen 16 ascends, the sewage discharge pipe 20 is opened, and the connecting pipe 18 is closed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. An energy-saving and environment-friendly wastewater recovery treatment device comprises a base (1), a sewage tank (17) and a sundry tank (21), and is characterized in that the base (1) is rotatably connected with a lower toothed ring (2), the lower toothed ring (2) is fixedly connected with an end face toothed disc (3), the base (1) is provided with a motor (6), the motor (6) is provided with a motor gear (601), and the motor gear (601) is meshed with the end face toothed disc (3);
the base (1) is rotatably connected with a central rod (27), the central rod (27) is fixedly connected with a lower gear (4), the lower gear (4) is meshed with the lower gear ring (2), the central rod (27) is fixedly connected with a connecting block (7), and the central rod (27) is rotatably connected with a connecting fluted disc (28);
the side walls of two sides of the connecting block (7) are fixedly connected with connecting frames (8), the connecting frames (8) are connected with sliding rods (11) in a sliding mode, the sliding rods (11) are connected with rotating rods (1501) in a rotating mode, the rotating rods (1501) are fixedly connected with connecting frames (15), the rotating rods (1501) are fixedly connected with rotating rod gears (13), and filter screens (16) are arranged on the connecting frames (15);
the sundries tank (21) is fixedly connected with a second connecting rod (25), and the second connecting rod (25) is fixedly connected with a toothed plate (26);
the connecting fluted disc (28) is surrounded by a cable (29), two ends of the cable (29) are respectively fixedly connected with the two sliding rods (11), and the connecting block (7) and the connecting frame (8) are fixedly connected with a plurality of guide wheels (801).
2. The energy-saving and environment-friendly wastewater recycling device as claimed in claim 1, wherein an upper toothed ring (201) is fixedly connected between the end face toothed disc (3) and the lower toothed ring (2), the central rod (27) is rotatably connected with a sleeve (2701), and the sleeve (2701) is fixedly connected with an upper gear (5).
3. The energy-saving and environment-friendly wastewater recycling device as claimed in claim 2, wherein the upper gear (5) is engaged with the upper gear ring (201), and the upper gear (5) is fixedly connected with the upright column (501).
4. The energy-saving and environment-friendly wastewater recovery and treatment device as claimed in claim 1, wherein a reinforcing rod (9) is fixedly connected between two adjacent connecting frames (8), and a support plate (10) is fixedly connected with the connecting frames (8).
5. The energy-saving and environment-friendly wastewater recovery and treatment device as claimed in claim 1, wherein the slide bar (11) is fixedly connected with a limit plate (12), and the sewage tank (17) is provided with a contact switch (14).
6. The energy-saving and environment-friendly wastewater recycling and treating device as claimed in claim 1, wherein the sewage tank (17) is provided with a sewage discharge pipe (20), the sewage tank (17) is provided with a connecting pipe (18), and one end of the connecting pipe (18) far away from the sewage tank (17) is provided with a reservoir (19).
7. The energy-saving and environment-friendly wastewater recovery and treatment device as claimed in claim 1, wherein the sundries tank (21) is fixedly connected with a first connecting rod (22), and the first connecting rod (22) is fixedly connected with a fixing plate (23).
8. The energy-saving and environment-friendly wastewater recovery and treatment device as claimed in claim 7, wherein the fixing plate (23) is fixedly connected with a needle plate (24), and the surface of the needle plate (24) is provided with a plurality of fine needles (2401) which are uniformly arranged.
9. The energy-saving and environment-friendly wastewater recovery and treatment device according to claim 1, wherein sliding grooves (701) are formed in the side walls of the two sides of the connecting block (7), one sliding groove (701) is connected with a sliding block (702) in a sliding manner, and the other sliding groove (701) is connected with a fixed frame (704) in a sliding manner.
10. The energy-saving and environment-friendly wastewater recovery and treatment device as claimed in claim 9, wherein the sliding block (702) is fixedly connected with a rack (703), the rack (703) is fixedly connected with a cross frame (30), and the cross frame (30) is fixedly connected with the fixing frame (704).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110733141.4A CN113426172A (en) | 2021-06-29 | 2021-06-29 | Energy-concerving and environment-protective waste water recovery processing apparatus that uses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110733141.4A CN113426172A (en) | 2021-06-29 | 2021-06-29 | Energy-concerving and environment-protective waste water recovery processing apparatus that uses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113426172A true CN113426172A (en) | 2021-09-24 |
Family
ID=77757954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110733141.4A Withdrawn CN113426172A (en) | 2021-06-29 | 2021-06-29 | Energy-concerving and environment-protective waste water recovery processing apparatus that uses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113426172A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114317029A (en) * | 2021-12-29 | 2022-04-12 | 王长城 | Waste mineral oil recycle system |
| CN114890587A (en) * | 2022-05-31 | 2022-08-12 | 华汇工程设计集团股份有限公司 | Municipal administration is sewage pretreatment equipment for water supply and drainage |
-
2021
- 2021-06-29 CN CN202110733141.4A patent/CN113426172A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114317029A (en) * | 2021-12-29 | 2022-04-12 | 王长城 | Waste mineral oil recycle system |
| CN114890587A (en) * | 2022-05-31 | 2022-08-12 | 华汇工程设计集团股份有限公司 | Municipal administration is sewage pretreatment equipment for water supply and drainage |
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Application publication date: 20210924 |
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| WW01 | Invention patent application withdrawn after publication |