CN113384958A - Sewage filtering component and sewage treatment device - Google Patents
Sewage filtering component and sewage treatment device Download PDFInfo
- Publication number
- CN113384958A CN113384958A CN202110653962.7A CN202110653962A CN113384958A CN 113384958 A CN113384958 A CN 113384958A CN 202110653962 A CN202110653962 A CN 202110653962A CN 113384958 A CN113384958 A CN 113384958A
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- Prior art keywords
- filtering
- sewage
- plate
- seat
- magnetic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
-
- 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
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Sewage (AREA)
Abstract
The invention discloses a sewage filtering assembly and a sewage treatment device, which comprise a filtering plate seat, wherein a filtering plate groove is formed in the filtering plate seat, a first filtering net is arranged in the filtering plate groove in a sliding manner, two crushing press plates are fixedly arranged on two sides of the first filtering net, a second filtering net is fixedly arranged in the filtering plate seat, and the upper end of the second filtering net is flush with the bottom wall of the filtering plate groove; fixed surface installs two mounting panels two, two including filtering the plate holder upper surface the lower surface of mounting panel two all rotates and installs a plurality of axis of rotation two, every equal fixed mounting has gear, puddler in the axis of rotation two. Has the advantages that: utilize the cooperation of filter screen one, filter screen two to use, can carry out secondary filter effect to sewage, improve the fixed effect to solid particle in the sewage, utilize the removal of filter screen one simultaneously to remove the solid particle who holds back on it from filter screen one, reduce the emergence of jam probability, improve the filter effect.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage filtering assembly and a sewage treatment device.
Background
The water which is polluted and loses the original use function in daily life and production is called as sewage, and the sewage can be treated by a sewage treatment device for improving the utilization of water resources, so that the utilization rate of the water resources is improved.
The existing sewage treatment device comprises a sewage floater filtering component, a sewage solid filtering component and a sewage sterilizing and disinfecting component (which is finished in a special sewage sterilizing and disinfecting cabinet or a sewage sterilizing and disinfecting pool).
However, the existing sewage solid filtering component has the following defects in the specific using process: the solid particles intercepted on the filter screen need to be cleaned manually and periodically, so that the blocking condition is reduced, and the problems of high labor intensity and low efficiency exist in the manual cleaning mode.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides a sewage filtering assembly and a sewage treatment device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sewage filtering assembly comprises a filtering plate seat, wherein a filtering plate groove is formed in the filtering plate seat, a first filtering net is arranged in the filtering plate groove in a sliding mode, two crushing pressing plates are fixedly arranged on two sides of the first filtering net, a second filtering net is fixedly arranged in the filtering plate seat, and the upper end of the second filtering net is flush with the bottom wall of the filtering plate groove;
the lower end of the filtering plate seat is fixedly provided with a cover body, the upper end of the cover body is provided with an opening, the filtering net is arranged in the cover body, the cover body is fixedly communicated with a gathering seat through a connecting hard pipe, and the gathering seat is fixedly communicated with a sewage discharging pipe;
the gathering seat is provided with two first magnetic plates through a rotating structure;
two equal fixed mounting has a connecting rod, two on the broken clamp plate the equal fixed mounting in upper end of connecting rod has a spacing seat, and the one end sliding seal that the connecting rod was kept away from to spacing seat runs through and filters the plate holder and fixed mounting has a mounting panel one, two the equal fixed mounting in one side that mounting panel one is close to mutually has two with magnetic sheet one matched with magnetic sheet, and two magnetic sheet two are close to the magnetism of one side the same.
In foretell sewage filtering component, the lower fixed surface of the cover body installs a plurality of body of rod, and the lower extreme fixed mounting of the body of rod gathers together on the upper surface of seat.
In foretell sewage filter component, revolution mechanic comprises two sealed bearing, a axis of rotation one and a flabellum, gather together and seted up two mounting holes on the seat, and all install sealed bearing in two mounting holes, two sealed bearing installs a axis of rotation one jointly, and axis of rotation one is located and gathers together the outside both ends of seat and all with a corresponding magnetic sheet fixed connection.
In the above sewage filtering component, the upper end of the first magnetic plate is flush with the upper end of the second magnetic plate in height, and the lower end of the first magnetic plate is flush with the lower end of the second magnetic plate in height.
In the above sewage filtering component, the maximum linear distance between the limiting seat and the filtering plate seat is less than or equal to the difference between the diameter of the crushing pressing plate and the width of the filtering net.
A sewage treatment device comprises the sewage filtering assembly of claims 1-6, wherein two second mounting plates are fixedly mounted on the upper surface of the filtering plate seat, a plurality of second rotating shafts are rotatably mounted on the lower surfaces of the two second mounting plates, a gear and a stirring rod are fixedly mounted on each of the second rotating shafts, and two toothed plates meshed with the corresponding gears are mounted on the first filtering net through a fixing structure.
In foretell sewage treatment plant, fixed knot constructs by spliced pole, connecting block and constitutes, the central point of broken clamp plate puts a fixed mounting of department has a spliced pole, the equal fixed mounting in both sides of spliced pole has a connecting block, and two connecting blocks keep away from one end and corresponding pinion rack fixed connection mutually.
Compared with the prior art, the invention has the advantages that:
1: utilize the cooperation of filter screen one, filter screen two to use, can carry out secondary filter effect to sewage, improve the fixed effect to solid particle in the sewage, utilize the removal of filter screen one simultaneously to remove the solid particle who holds back on it from filter screen one, reduce the emergence of jam probability, improve the filter effect.
2: the reciprocating movement of the first filter screen can generate a crushing effect on solid particles intercepted on the second filter screen, so that the probability of blockage of the second filter screen is reduced, and the filtering efficiency is improved.
3: through the cooperation use of axis of rotation one, flabellum, magnetic sheet one, connecting rod, spacing seat, mounting panel one and magnetic sheet two, can utilize the flow of sewage self to drive filter screen one at the ascending reciprocating motion of horizontal direction, reduce the use cost of integrated device.
4: through the cooperation of mounting panel two, axis of rotation two, gear, puddler, spliced pole, connecting block and pinion rack use for filter screen one can drive the puddler and rotate in reciprocating motion, utilizes the rotation of puddler on the one hand can produce a beating crushing effect to the granule of suspension in sewage, and on the other hand also can utilize its air current that rotates the production to flow, reduces the probability that filter screen one takes place to block up.
Drawings
FIG. 1 is a schematic structural view of a sewage filter module according to the present invention;
FIG. 2 is a schematic view of another angle of a sewage filter assembly according to the present invention;
FIG. 3 is a schematic structural view of a portion of a rotating shaft of a sewage filter assembly according to the present invention;
FIG. 4 is a schematic structural diagram of a second portion of a filter screen of the sewage filter assembly according to the present invention;
FIG. 5 is a schematic structural view of a sewage treatment apparatus provided with a sewage filtering assembly according to the present invention;
FIG. 6 is a schematic structural view of a mounting plate of a sewage treatment apparatus with a sewage filtering assembly according to the present invention;
FIG. 7 is a bottom view of two parts of a mounting plate of a sewage treatment apparatus with a sewage filter assembly installed therein according to the present invention.
In the figure: the device comprises a filtering plate base 1, a filtering screen I2, a crushing pressing plate 3, a filtering screen II 4, a cover body 5, a connecting hard pipe 6, a gathering base 7, a dirt discharging pipe 8, a sealing bearing 9, a rotating shaft I10, fan blades 11, a magnetic plate I12, a connecting rod 13, a limiting base 14, a mounting plate I15, a magnetic plate II 16, a filtering plate groove 17, an upright post 18, a mounting plate II 19, a rotating shaft II 20, a gear 21, a stirring rod 22, a connecting post 23, a connecting block 24 and a toothed plate 25.
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, 2 and 4, a sewage filtering assembly comprises a filtering plate base 1, wherein a filtering plate groove 17 is formed in the filtering plate base 1, a filtering net I2 is slidably mounted in the filtering plate groove 17, two crushing press plates 3 are fixedly mounted on two sides of the filtering net I2, and a filtering net II 4 is fixedly mounted in the filtering plate base 1;
the following points are notable:
1. the upper end of the second filter screen 4 is flush with the bottom wall of the filter plate groove 17, and the lower surface of the first filter screen 2 is flush with the bottom wall of the filter plate groove 17.
2. The filtration mesh aperture of seting up on the filter screen two 4 is less than the filtration mesh aperture of seting up on the filter screen 2 to can carry out secondary filter to sewage under the two mating reaction, simultaneously because filter screen 2 is portable, thereby also can produce a grinding crushing effect to the fixed granule of holding back on filter screen two 4 when filter screen one 2 removes, have the effect that reduces filter screen two 4 and take place to block up.
3. The lower end surface of the crushing pressing plate 3 is in contact with the bottom wall of the filter plate groove 17, so that the crushing effect on the precipitated particles on the two sides can be generated when the crushing pressing plate moves.
4. When the filter screen 2 moves, solid particles trapped on the filter screen 2 can be shaken out of the filter screen 2 and fall to two sides of the two crushing pressing plates 3, so that the part of the solid particles are crushed by extrusion when the crushing pressing plates 3 move.
Referring to fig. 1 and 2, a cover body 5 is fixedly mounted at the lower end of a filter plate seat 1, the upper end of the cover body 5 is provided with an opening, a filter screen II 4 is positioned in the cover body 5, the cover body 5 is fixedly communicated with a gathering seat 7 through a connecting hard tube 6, and the gathering seat 7 is fixedly communicated with a sewage discharging tube 8;
the following points are notable:
1. install the valve on dirty pipe 8 down, the setting of valve can improve effectively convenient when whole equipment use finishes wasing.
2. The inner wall of the cover body 5 at the lower end part of the second filter screen 4 is obliquely arranged, so that sewage can flow downwards at a higher speed, and an impact rotation effect is better generated on the subsequent fan blades 11.
3. The lower surface of the cover body 5 is fixedly provided with a plurality of rod bodies, and the lower ends of the rod bodies are fixedly arranged on the upper surface of the gathering seat 7; the setting of the body of rod is used for improving the firmness between seat 7 and the cover body 5 of gathering together.
4. The lower end of the connecting hard pipe 6 is arranged on one side of the axial lead 10 of the rotating shaft, so that the sewage can better impact the fan blades 11 to rotate when flowing out of the connecting hard pipe 6.
Referring to fig. 1-3, the gathering seat 7 is provided with two magnetic plates I12 through a rotating structure;
the following points are notable:
1. the rotating structure is composed of two sealing bearings 9, a first rotating shaft 10 and a fan blade 11, two mounting holes are formed in the gathering seat 7, the sealing bearings 9 are mounted in the two mounting holes, the first rotating shaft 10 is mounted on the two sealing bearings 9, and the first rotating shaft 10 is located at the two ends of the gathering seat 7, wherein the two ends of the gathering seat are fixedly connected with the corresponding first magnetic plate 12.
2. The sealing bearing 9 is arranged, so that the joint of the first rotating shaft 10 and the gathering seat 7 is in a relatively sealed state, and sewage cannot leak from the joint of the first rotating shaft and the gathering seat.
3. The same side magnetism of the two magnetic plates 12 is the same.
Referring to fig. 1, 2 and 4, a connecting rod 13 is fixedly installed on each of the two crushing pressing plates 3, a limiting seat 14 is fixedly installed at the upper end of each of the two connecting rods 13, one end, far away from the connecting rod 13, of each limiting seat 14 penetrates through the filtering plate seat 1 in a sliding sealing manner and is fixedly installed with a first mounting plate 15, and a second magnetic plate 16 matched with the first magnetic plate 12 is fixedly installed on one side, close to the first mounting plate 15;
the following points are notable:
1. the upper end of the first magnetic plate 12 is flush with the upper end of the second magnetic plate 16 in height, and the lower end of the first magnetic plate 12 is flush with the lower end of the second magnetic plate 16 in height.
2. The magnetism of the side, close to the two second magnetic plates 16, is the same, so that the moving directions of the two second magnetic plates 16 are the same each time.
3. The biggest straight-line distance between spacing seat 14 and the filter plate seat 1 is less than or equal to the difference between the broken clamp plate 3 diameter and the two 4 widths of filter screen to make filter screen one 2 when removing to leftmost side or rightmost side, filter screen one 2 still can play a complete shielding effect to filter screen two 4, thereby makes sewage can directly not trickle down through filter screen two 4.
Referring to fig. 5 to 7, a sewage treatment device comprises the sewage filtering assembly of claims 1 to 6, wherein two second mounting plates 19 are fixedly mounted on the upper surface of the filtering plate base 1, a plurality of second rotating shafts 20 are rotatably mounted on the lower surfaces of the two second mounting plates 19, a gear 21 and a stirring rod 22 are fixedly mounted on each second rotating shaft 20, and two toothed plates 25 engaged with the corresponding gear 21 are mounted on the first filtering net 2 through a fixing structure;
the following points are notable:
1. the fixing structure is composed of a connecting column 23 and connecting blocks 24, the central position of the crushing pressing plate 3 is fixedly provided with one connecting column 23, the two sides of the connecting column 23 are fixedly provided with one connecting block 24, and the two connecting blocks 24 are far away from one end and are fixedly connected with a corresponding toothed plate 25.
2. A plurality of upright posts 18 are fixedly mounted on the lower surface of the filter plate base 1, and a non-slip mat is fixedly mounted at the lower end of each upright post 18.
3. Still fixed mounting has the backup pad body (not drawn in the picture) between a plurality of stands 18, and installs sewage sterilizer (not drawn in the picture) that disinfects on the backup pad body, and the lower extreme of sewer 8 is linked together with sewage sterilizer, utilizes sewage sterilizer to carry out a disinfection operation of disinfecting to the sewage after filtering.
4. The filter plate base 1 is provided with a sewage floating object filtering assembly (not shown in the figure), which is of a conventional structure and is not specifically described herein.
Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.
In the invention, sewage filtered by the sewage floater filtering component is conveyed into the filtering plate groove 17, the sewage flows downwards through the first filtering screen 2 and then flows into the cover body 5 through the second filtering screen 4, the filtered sewage is conveyed into the gathering seat 7 through the connecting hard pipe 6 fixedly communicated with the cover body 5, when the sewage flows out through the lower end of the connecting hard pipe 6, an impact action is generated on the fan blade 11, the first rotating shaft 10 is rotated by utilizing the impact action, the first rotating shaft 10 drives the first magnetic plate 12 fixedly connected with the first rotating shaft to rotate, the first magnetic plate 12 rotates to apply a synchronous moving acting force of reciprocating movement to the second magnetic plates 16 (the two magnetic plates 16 move leftwards or rightwards simultaneously), the second magnetic plates 16 move through the first mounting plate 15, the limiting seat 14 and the connecting rod 13 to drive the crushing pressing plate 3 to reciprocate in the horizontal direction, the reciprocating movement of the crushing pressing plate 3 can generate an extrusion crushing effect (matched with the side wall of the filter plate groove 17) on the solid particles falling on the bottom wall of the filter plate groove 17, the movement of the crushing pressing plate 3 can drive the filter screen I2 to move together, the movement of the filter screen I2 can firstly generate a shaking effect on the solid particles intercepted on the filter screen I, and the solid particles are removed from the filter screen I, simultaneously filter screen 2 removes through spliced pole 23, connecting block 24 drives two pinion racks 25 and removes in the lump, pinion rack 25 removes and can drive the gear 21 with it meshing and rotate, gear 21 rotates the puddler 22 that drives coaxial setting with it and rotates, puddler 22 rotates and can produce a beating crushing effect to the granule of suspension in sewage on the one hand, on the other hand also can utilize its air current that rotates the production to flow, reduces filter screen 2 and takes place the probability of jam.
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 (7)
1. A sewage filtering assembly comprises a filtering plate seat (1), and is characterized in that a filtering plate groove (17) is formed in the filtering plate seat (1), a first filtering net (2) is arranged in the filtering plate groove (17) in a sliding mode, crushing pressing plates (3) are fixedly arranged on two sides of the first filtering net (2), a second filtering net (4) is fixedly arranged in the filtering plate seat (1), and the upper end of the second filtering net (4) is flush with the bottom wall of the filtering plate groove (17);
a cover body (5) is fixedly installed at the lower end of the filtering plate seat (1), the upper end of the cover body (5) is provided with an opening, the second filtering net (4) is located in the cover body (5), the cover body (5) is fixedly communicated with a gathering seat (7) through a connecting hard pipe (6), and a sewage discharging pipe (8) is fixedly communicated with the gathering seat (7);
the gathering seat (7) is provided with two first magnetic plates (12) through a rotating structure;
two equal fixed mounting has a connecting rod (13), two on broken clamp plate (3) the equal fixed mounting in upper end of connecting rod (13) has one spacing seat (14), and the one end sliding seal who keeps away from connecting rod (13) in spacing seat (14) runs through and filters plate holder (1) and fixed mounting and have one mounting panel (15), two the equal fixed mounting in one side that mounting panel (15) are close to mutually has two (16) of magnetic sheet matched with magnetic sheet (12), and two magnetic sheet two (16) are close to the magnetism of one side mutually the same.
2. The sewage filter assembly according to claim 1, wherein a plurality of rods are fixedly mounted on the lower surface of the cover body (5), and the lower ends of the rods are fixedly mounted on the upper surface of the gathering base (7).
3. The sewage filtering assembly according to claim 1, wherein the rotating structure comprises two sealing bearings (9), a first rotating shaft (10) and a fan blade (11), two mounting holes are formed in the gathering base (7), the sealing bearings (9) are mounted in the two mounting holes, the first rotating shaft (10) is mounted on the two sealing bearings (9), and two ends of the first rotating shaft (10) located outside the gathering base (7) are fixedly connected with the corresponding first magnetic plates (12).
4. The sewage filter assembly of claim 1, wherein the upper end of the first magnetic plate (12) is flush with the upper end of the second magnetic plate (16), and the lower end of the first magnetic plate (12) is flush with the lower end of the second magnetic plate (16).
5. A sewage filter assembly according to claim 1 wherein the maximum linear distance between the limiting seat (14) and the filter plate seat (1) is less than or equal to the difference between the diameter of the crushing pressing plate (3) and the width of the second filter screen (4).
6. The sewage treatment device is characterized by comprising the sewage filtering assembly in claims 1-6, wherein two mounting plates II (19) are fixedly mounted on the upper surface of the filtering plate seat (1), a plurality of rotating shafts II (20) are rotatably mounted on the lower surfaces of the two mounting plates (19), each rotating shaft II (20) is fixedly mounted with a gear (21) and a stirring rod (22), and two toothed plates (25) meshed with the corresponding gears (21) are mounted on the first filtering net (2) through a fixing structure.
7. The sewage treatment device according to claim 6, wherein the fixing structure is composed of a connecting column (23) and connecting blocks (24), one connecting column (23) is fixedly installed at the central position of the crushing pressing plate (3), one connecting block (24) is fixedly installed at both sides of the connecting column (23), and one end of each connecting block (24) far away from the other connecting block is fixedly connected with the corresponding toothed plate (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110653962.7A CN113384958A (en) | 2021-06-11 | 2021-06-11 | Sewage filtering component and sewage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110653962.7A CN113384958A (en) | 2021-06-11 | 2021-06-11 | Sewage filtering component and sewage treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113384958A true CN113384958A (en) | 2021-09-14 |
Family
ID=77620592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110653962.7A Withdrawn CN113384958A (en) | 2021-06-11 | 2021-06-11 | Sewage filtering component and sewage treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113384958A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08299717A (en) * | 1995-04-28 | 1996-11-19 | Fuji Heavy Ind Ltd | Coolant purifier |
| CN107673541A (en) * | 2017-11-20 | 2018-02-09 | 童培豪 | A kind of environment-friendly sewage processing unit and processing method |
| CN210645341U (en) * | 2019-10-09 | 2020-06-02 | 宋博 | Filter equipment for sewage treatment |
| CN212053151U (en) * | 2020-02-23 | 2020-12-01 | 庄景勇 | Garbage collection device for water conservancy |
| CN112591931A (en) * | 2020-12-04 | 2021-04-02 | 北京怡盛原环保科技有限公司 | Urban sewage treatment device and treatment method thereof |
| CN212982710U (en) * | 2020-06-28 | 2021-04-16 | 何阳菊 | Wastewater filtering mechanism for steel plant |
| CN112892130A (en) * | 2021-01-26 | 2021-06-04 | 凤阳县正功矿业有限公司 | Dust removal equipment in quartz sand crushing process and use method thereof |
-
2021
- 2021-06-11 CN CN202110653962.7A patent/CN113384958A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08299717A (en) * | 1995-04-28 | 1996-11-19 | Fuji Heavy Ind Ltd | Coolant purifier |
| CN107673541A (en) * | 2017-11-20 | 2018-02-09 | 童培豪 | A kind of environment-friendly sewage processing unit and processing method |
| CN210645341U (en) * | 2019-10-09 | 2020-06-02 | 宋博 | Filter equipment for sewage treatment |
| CN212053151U (en) * | 2020-02-23 | 2020-12-01 | 庄景勇 | Garbage collection device for water conservancy |
| CN212982710U (en) * | 2020-06-28 | 2021-04-16 | 何阳菊 | Wastewater filtering mechanism for steel plant |
| CN112591931A (en) * | 2020-12-04 | 2021-04-02 | 北京怡盛原环保科技有限公司 | Urban sewage treatment device and treatment method thereof |
| CN112892130A (en) * | 2021-01-26 | 2021-06-04 | 凤阳县正功矿业有限公司 | Dust removal equipment in quartz sand crushing process and use method thereof |
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Application publication date: 20210914 |
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