CN111871044A - Sewage treatment filter equipment - Google Patents
Sewage treatment filter equipment Download PDFInfo
- Publication number
- CN111871044A CN111871044A CN202010775918.9A CN202010775918A CN111871044A CN 111871044 A CN111871044 A CN 111871044A CN 202010775918 A CN202010775918 A CN 202010775918A CN 111871044 A CN111871044 A CN 111871044A
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- China
- Prior art keywords
- rotary drum
- box body
- groove
- sewage treatment
- sewage
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Classifications
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- 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
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
-
- 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
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
-
- 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
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a sewage treatment filtering device which comprises a box body and a plurality of supporting columns arranged at the lower end of the box body, wherein a water inlet interface is arranged at the upper end of the box body and is communicated with a water inlet pipe, a rotary drum is rotatably connected in the box body, a water outlet pipe communicated with the rotary drum is arranged at the side end of the box body, a partition plate, a through groove, a filtering assembly and a sealing plate are arranged on the rotary drum, a driving assembly for driving the sealing plate to perform sealing work is arranged on the rotary drum, and a cleaning assembly for cleaning the filtering. The rotary drum rotates and makes contact on the rotary drum and the periodic contact of feeler block and dead slot on the box, and then makes whether circular telegram magnet is periodic circular telegram, and then makes circular telegram magnet periodic production magnetism, makes the permanent magnet area closing plate remove inside the spout, can open and close logical groove, sewage carries out filtering work through the filter screen that leads to on the groove, sewage after the filtration falls into behind the rotary drum because the rotary drum slant sets up in the box, the sewage after the filtration passes through outlet pipe discharge box.
Description
Technical Field
The invention relates to sewage treatment equipment, in particular to a sewage treatment filtering device.
Background
With the development of science and technology, environmental pollution is a serious problem, and among them, the treatment of sewage is a serious environmental problem. The sewage comprises industrial sewage and domestic sewage, and if the sewage cannot be completely purified, the sewage is directly discharged and can enter a water circulation system of the earth again, so that the ecological environment is destroyed, and the sewage also enters a human body to influence the health of human beings. Can not filter sewage among the current sewage treatment jar for contain solid pollutant in the sewage, thereby lead to solid pollutant purification that can not be timely, make sewage discharge not up to standard, in addition, sewage can not circulate and purify, cause purifying effect lower.
Traditional sewage treatment filter equipment often adopts the filter screen to carry out the filtering of big particulate matter, and the filter screen carries out the filtering work after for a long time and filters a large amount of big particulate matters of pore department accumulation for filter screen filtering effect worsens.
Disclosure of Invention
The present invention is directed to a sewage treatment filtering apparatus to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a sewage treatment filtering device comprises a box body and a plurality of supporting columns arranged at the lower end of the box body, wherein a water inlet interface externally connected with a sewage pipe is arranged at the upper end of the box body and is communicated with a water inlet pipe; two be equipped with logical groove between the baffle, it is a plurality of lead to the equal fixedly connected with in one side that the inslot is close to the rotary drum axis carries out filtration treatment's filtering component to sewage, it is a plurality of lead to the inslot one side of keeping away from the rotary drum axis all is equipped with the closing plate of mutual joint, be equipped with the drive assembly that the drive closing plate carries out sealing work on the rotary drum, be equipped with the washing subassembly that washs filtering component on the box.
As a further scheme of the invention: the water inlet pipe is obliquely arranged in the box body.
As a further scheme of the invention: one side of the rotary drum, which is far away from the water outlet pipe, is rotationally connected with the box body through a universal shaft.
As a further scheme of the invention: the filter assembly comprises an outer frame and a filter screen, the filter screen is fixedly connected in the outer frame, and the outer frame is fixedly connected with the wall of the through groove.
As a further scheme of the invention: one of the sealing plates is fixedly connected with a lug, the other sealing plate is provided with a groove matched with the lug, and the lug is clamped with the groove.
As a further scheme of the invention: the driving assembly comprises sliding grooves, permanent magnets, springs, electrified magnets, contacts, contact blocks, empty grooves and electric wires, the sliding grooves are symmetrically formed in two sides of the through groove respectively, the permanent magnets and the electrified magnets are arranged in the sliding grooves respectively, the permanent magnets are in sliding connection with the sliding grooves, the permanent magnets are fixedly connected with the sealing plates, the electrified magnets are fixedly connected with the bottoms of the sliding grooves, the permanent magnets are connected with the electrified magnets through the springs, the electrified magnets are electrically connected with the contacts, the contacts are fixedly connected with the rotary drum, the contact blocks matched with the contacts are arranged on the side wall of the box body, the empty grooves symmetrical to the contact blocks are formed in the side wall of the box body, the electric wires of an external power supply electrically connected with the contact blocks are arranged on the side wall of the box body, and.
As a further scheme of the invention: and the sealing plate is provided with a scraping block for scraping the filter screen.
As a further scheme of the invention: the cleaning assembly comprises spray heads, water receiving pipes and drain pipes, the two spray heads are symmetrically arranged on two sides of the box body respectively, the spray heads are communicated with the water receiving pipes externally connected with a water source, and the drain pipes are arranged at the side ends of the box body.
As a further scheme of the invention: and the drain pipe is provided with an electromagnetic valve for controlling the drain pipe to be closed or opened.
As a further scheme of the invention: and a plurality of balls are arranged on one side of the rotary drum close to the water outlet pipe, the balls are in rolling connection with the rotary drum and the box body, and the box body and the rotary drum are respectively provided with a hemispherical groove for the balls to roll.
Compared with the prior art, the invention has the beneficial effects that:
the sewage entering the box body is rotatably connected to the inner part of the box body under the action of the rotary drum on the partition plate of the rotary drum through the sewage self gravity factor and the obliquely arranged water inlet pipe, so that the self-rotation of the rotary drum is realized, the driving of an external power source is not needed, and the automatic rotary sewage treatment device is safe and environment-friendly;
the rotating drum rotates to enable the contact on the rotating drum to be periodically contacted with the contact block and the empty groove on the box body, so that whether the electrified magnet is periodically electrified or not is achieved, when the through groove is arranged on the upper side of the axis of the rotating drum, the electrified magnet is electrified to enable the permanent magnet to drive the sealing plate to move towards the interior of the sliding groove, the through groove is opened, and sewage is filtered through the filter screen on the through groove; when the through groove is arranged at the lower side of the axis of the rotary drum, the permanent magnet is electrified to carry out electricity supplementation so that the permanent magnet drives the sealing plate to move away from the through groove, the through groove is closed, the filtered sewage falls into the rotary drum and is obliquely arranged in the box body due to the rotary drum, and the filtered sewage is discharged out of the box body through the water outlet pipe;
the scraper blade that the closing plate lower extreme was equipped with can scrape the filter screen surface along with the removal of closing plate, prevents that the filter screen from causing the filter effect variation of filter screen because of impurity blocks up.
One end of the rotary drum is rotationally connected with the box body through a universal shaft, so that the rotary drum can rotate in the box body; the other end of the rotating drum is provided with a plurality of balls, so that the rotating drum can rotate more smoothly in the box body;
and the nozzles arranged on the two sides of the box body spray water to clean the filter screen when the through groove on the rotary drum rotates to the horizontal direction of the axis of the rotary drum under the action of the water receiving pipe externally connected with a water source.
Drawings
FIG. 1 is a schematic view of a sewage treatment filtering apparatus.
FIG. 2 is a side sectional view of a sewage treatment filtering apparatus.
FIG. 3 is a schematic view of a part of a sewage treatment filtering apparatus.
FIG. 4 is a schematic view of a connection structure between a contact and a rotary drum in a sewage treatment filtering device.
FIG. 5 is a schematic view of a connection structure of a box, an electric wire and a contact block in the sewage treatment filtering device.
FIG. 6 is a three-dimensional schematic view of a wastewater treatment filtration unit.
In the figure: 1-box body, 2-support column, 3-water inlet interface, 4-water inlet pipe, 5-rotary drum, 6-universal shaft, 7-ball, 8-semispherical groove, 9-water outlet pipe, 10-clapboard, 11-through groove, 12-sliding groove, 13-permanent magnet, 14-sealing plate, 15-convex block, 16-groove, 17-scraping block, 18-spring, 19-electromagnet, 20-outer frame, 21-filter screen, 22-contact, 23-contact block, 24-empty groove, 25-wire, 26-nozzle, 27-water receiving pipe and 28-water discharging pipe.
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.
Example 1
Referring to fig. 1-6, a sewage treatment filtering device comprises a box body 1 and six supporting columns 2 arranged at the lower end of the box body 1 and used for supporting the box, wherein a water inlet port 3 externally connected with a sewage pipe is arranged at the upper end of the box body 1, the water inlet port 3 is communicated with a water inlet pipe 4, a rotary drum 5 is rotatably connected in the box body 1, a water outlet pipe 9 communicated with the rotary drum 5 is arranged at the side end of the box body 1, a plurality of groups of partition plate groups are fixedly connected to the outer surface of the rotary drum 5, the plurality of groups of partition plate groups are respectively composed of two partition plates 10, sewage enters the box body 1 through the water inlet port 3, and the rotary drum 5 rotates under; be equipped with between two baffles 10 and lead to groove 11, a plurality of equal fixedly connected with in leading to groove 11 and being close to one side of rotary drum 5 axis carries out filtration treatment's filtering component to sewage, and one side of keeping away from rotary drum 5 axis in a plurality of logical groove 11 all is equipped with the closing plate 14 of mutual joint, is equipped with the drive assembly that drive closing plate 14 carries out sealed work on rotary drum 5, is equipped with the washing subassembly that washs filtering component on box 1.
Furthermore, the water inlet pipe 4 is obliquely arranged in the box body 1, so that sewage can enter the two partition plates 10 at the upper end of the rotary drum 5 through the obliquely arranged water inlet pipe 4, and the partition plates 10 drive the rotary drum 5 to rotate in the box body 1;
furthermore, one side of the rotary drum 5, which is far away from the water outlet pipe 9, is rotatably connected with the box body 1 through a universal shaft 6, so that the rotary drum 5 can obliquely rotate in the box body 1;
the filtering component comprises an outer frame 20 and a filtering net 21, the filtering net 21 is fixedly connected in the outer frame 20, the outer frame 20 is fixedly connected with the wall of the through groove 11, and the filtering net 21 can filter sewage;
furthermore, a bump 15 is fixedly connected to one sealing plate 14, a groove 16 matched with the bump 15 is formed in the other sealing plate 14, the bump 15 is clamped with the groove 16, and the two sealing plates 14 are connected through clamping of the groove 16 and the bump 15;
the driving component comprises sliding chutes 12, permanent magnets 13, springs 18, energized magnets 19, contacts 22, contact blocks 23, empty grooves 24 and electric wires 25, the two sliding chutes 12 are respectively and symmetrically arranged at two sides of the through groove 11, the permanent magnets 13 and the energized magnets 19 are respectively arranged in the two sliding chutes 12, the permanent magnets 13 are in sliding connection with the sliding chutes 12, the permanent magnets 13 are fixedly connected with the sealing plate 14, the energized magnets 19 are fixedly connected with the bottoms of the sliding chutes 12, the permanent magnets 13 are connected with the energized magnets 19 through the springs 18, the energized magnets 19 are electrically connected with the contacts 22, the contacts 22 are fixedly connected with the rotary drum 5, the side wall of the box body 1 is provided with the contact blocks 23 matched with the contacts 22, the side wall of the box body 1 is provided with the empty grooves 24 symmetrical to the contact blocks 23, the side wall of the box body 1 is provided with the electric wires 25 of an external power supply which are electrically connected with the contact blocks 23, the contacts, the contact 22 is electrified, so that the two electrified magnets 19 electrically connected with the contact 22 are electrified to generate magnetism, and further, due to the magnetic action of the two permanent magnets 13 in the chute 12, the permanent magnets 13 drive the sealing plate 14 to slide in the chute 12, the through groove 11 on the rotary drum 5 is opened, the sewage passes through the through groove 11, large-particle impurities are filtered through the filter screen 21, and the filtered sewage is reserved to the water outlet pipe 9 through the rotary drum 5 and is discharged;
furthermore, a scraping block 17 for scraping the filter screen 21 is arranged on the sealing plate 14, and the scraping plate 17 at the lower end of the sealing plate 14 scrapes the filter screen 21 along with the scraping block to prevent the filter screen 21 from being blocked;
the cleaning assembly comprises spray heads 26, water receiving pipes 27 and water discharging pipes 28, the two spray heads 26 are respectively and symmetrically arranged at two sides of the box body 1, the spray heads 26 are communicated with the water receiving pipes 27 externally connected with a water source, the water discharging pipes 28 are arranged at the side ends of the box body 1, when impurities accumulated on the filter screen 21 are more, the through groove 11 on the rotary drum 5 rotates to the horizontal direction, the through groove 11 is still in an open state, and the water receiving pipes 27 externally connected with the water source enable the filter screen 21 in the horizontal direction of the spray heads 26 to be sprayed;
further, the drain pipe 28 is provided with an electromagnetic valve for controlling the opening and closing of the drain pipe 28, and the electromagnetic valve opens the drain pipe 28 to discharge the sewage for cleaning the filter screen 21 in the box body 1.
The working principle of the embodiment 1 of the invention is as follows:
the sewage to be treated is transported into the box body 1 through the water inlet interface 3, enters the two partition plates 10 at the upper end of the rotary drum 5 through the obliquely arranged water inlet pipe 4, so that the partition plates 10 drive the rotary drum 5 to rotate in the box body 1, the rotary drum 5 rotates to enable the contact 22 fixedly connected with the rotary drum 5 to rotate along with the rotary drum, when the contact 22 is contacted with the contact block 23 at the upper side of the side wall of the box body 1, the contact 22 is electrified, so that the two electrified magnets 19 electrically connected with the contact 22 are electrified to generate magnetism, so that the two permanent magnets 13 in the chute 12 drive the sealing plate 14 to slide in the chute 12 due to the magnetic action, the through groove 11 in the rotary drum 5 is opened, the sewage passes through the through groove 11 and is filtered by large-particle impurities through the filter screen 21, and the filtered sewage is; when the contact 22 is in contact with the empty groove 24 on the lower side of the side wall of the box body 1, the contact 22 is not electrified, so that the two electrified magnets 19 electrically connected with the contact 22 are not electrified, the magnetism disappears, under the action of the elastic force of the two springs 18 in the sliding groove 12, the permanent magnet 13 moves away from the electrified magnets 19, the two sealing plates 14 are close to each other, the convex blocks 15 and the grooves 16 on the sealing plates 14 are clamped with each other, the two sealing plates 14 are clamped with each other to seal the through groove 11, and when the sealing plates 14 move in the sliding groove 2, the scraper 17 at the lower ends of the sealing plates 14 scrape the filter screen 21 along with the scraper, so; when the impurities gathered on the filter screen 21 are more, when the through groove 11 on the rotary drum 5 rotates to the horizontal direction, the through groove 11 is still in an open state, the filter screen 21 on the horizontal direction of the spray head 26 is sprayed with water and cleaned by the water receiving pipe 27 externally connected with a water source, and the water falling into the box body 1 is discharged out of the box body 1 through the drain pipe 28 provided with the electromagnetic valve.
Example 2
Further improvement is made on the basis of the embodiment 1, and the improvement points are as follows: one side that the rotary drum 5 is close to outlet pipe 9 is equipped with a plurality of balls 7, and a plurality of balls 7 all are equipped with on box 1 and the rotary drum 5 and supply rolling hemisphere groove 8 of ball 7 with rotary drum 5 and box 1 roll connection, and when rotary drum 5 rotated on the lateral wall of box 1, rotary drum 5 rotated and made ball 7 roll in hemisphere groove 8 on box 1 and rotary drum 5, and ball 7's roll makes rotary drum 5 pivoted more smooth and easy on box 1.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A sewage treatment filtering device comprises a box body (1) and a plurality of supporting columns (2) arranged at the lower end of the box body (1), wherein a water inlet connector (3) externally connected with a sewage pipe is arranged at the upper end of the box body (1), the water inlet connector (3) is communicated with a water inlet pipe (4), the sewage treatment filtering device is characterized in that a rotary drum (5) is rotatably connected in the box body (1), a water outlet pipe (9) communicated with the rotary drum (5) is arranged at the side end of the box body (1), a plurality of groups of partition plate groups are fixedly connected on the outer surface of the rotary drum (5), and the plurality of groups of partition plate groups are respectively composed of two partition; two be equipped with between baffle (10) and lead to groove (11), it is a plurality of lead to the equal fixedly connected with in one side that is close to rotary drum (5) axis in groove (11) and carry out filtration treatment's filtering component to sewage, it is a plurality of one side of keeping away from rotary drum (5) axis in groove (11) all is equipped with closing plate (14) of mutual joint, be equipped with the drive assembly that drive closing plate (14) carry out sealing work on rotary drum (5), be equipped with the cleaning assembly who washs filtering component on box (1).
2. A sewage treatment filtering device according to claim 1, characterized in that said inlet pipe (4) is arranged obliquely in the tank (1).
3. A sewage treatment filtering device according to claim 1, wherein the side of said drum (5) remote from the outlet pipe (9) is rotatably connected to the tank (1) by means of a cardan shaft (6).
4. The sewage treatment filtering device according to claim 1, wherein the filtering assembly comprises an outer frame (20) and a filtering net (21), the filtering net (21) is fixedly connected in the outer frame (20), and the outer frame (20) is fixedly connected with the wall of the through groove (11).
5. The sewage treatment filtering device according to claim 1, wherein a projection (15) is fixedly connected to one of the sealing plates (14), a groove (16) matched with the projection (15) is formed in the other sealing plate (14), and the projection (15) is clamped with the groove (16).
6. The sewage treatment filtering device according to claim 1, wherein the driving assembly comprises sliding grooves (12), permanent magnets (13), springs (18), electrified magnets (19), contacts (22), contact blocks (23), empty grooves (24) and electric wires (25), the two sliding grooves (12) are respectively and symmetrically arranged at two sides of the through groove (11), the permanent magnets (13) and the electrified magnets (19) are respectively arranged in the two sliding grooves (12), the permanent magnets (13) are in sliding connection with the sliding grooves (12), the permanent magnets (13) are fixedly connected with the sealing plate (14), the electrified magnets (19) are fixedly connected with the bottom of the sliding grooves (12), the permanent magnets (13) are connected with the electrified magnets (19) through the springs (18), the electrified magnets (19) are electrically connected with the contacts (22), and the contacts (22) are fixedly connected with the rotary drum (5), be equipped with on box (1) lateral wall with contact (22) matched with feeler block (23), be equipped with on box (1) lateral wall with feeler block (23) symmetrical dead slot (24), be equipped with on box (1) lateral wall with feeler block (23) electric connection's external power source's electric wire (25), contact (22), feeler block (23) and electric wire (25) constitute closed circuit.
7. The sewage treatment filtering device according to claim 6, wherein the sealing plate (14) is provided with a scraping block (17) for scraping the filtering net (21).
8. The sewage treatment filtering device according to claim 1, wherein the cleaning assembly comprises spray heads (26), a water receiving pipe (27) and a water discharging pipe (28), the two spray heads (26) are respectively and symmetrically arranged at two sides of the box body (1), the spray heads (26) are communicated with the water receiving pipe (27) externally connected with a water source, and the water discharging pipe (28) is arranged at the side end of the box body (1).
9. The sewage treatment filtering device according to claim 8, wherein the drain pipe (28) is provided with an electromagnetic valve for controlling the opening and closing of the drain pipe.
10. The sewage treatment filtering device according to claim 1, wherein a plurality of balls (7) are arranged on one side of the rotary drum (5) close to the water outlet pipe (9), a plurality of balls (7) are in rolling connection with the rotary drum (5) and the box body (1), and hemispherical grooves (8) for the balls (7) to roll are arranged on the box body (1) and the rotary drum (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010775918.9A CN111871044A (en) | 2020-08-05 | 2020-08-05 | Sewage treatment filter equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010775918.9A CN111871044A (en) | 2020-08-05 | 2020-08-05 | Sewage treatment filter equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111871044A true CN111871044A (en) | 2020-11-03 |
Family
ID=73210591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010775918.9A Withdrawn CN111871044A (en) | 2020-08-05 | 2020-08-05 | Sewage treatment filter equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111871044A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113368581A (en) * | 2021-06-22 | 2021-09-10 | 孔凡军 | Resource-saving micro-filter |
| CN114632382A (en) * | 2022-04-20 | 2022-06-17 | 南通久奇环保节能工程有限公司 | Waste gas treatment device with energy-saving and environment-friendly functions |
| CN115554762A (en) * | 2022-10-31 | 2023-01-03 | 徐州志欧机电设备有限公司 | A environmental protection microstrainer for sewage treatment |
| CN116196684A (en) * | 2023-05-05 | 2023-06-02 | 山东济钢环保新材料有限公司 | Mining site sewage treatment device |
-
2020
- 2020-08-05 CN CN202010775918.9A patent/CN111871044A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113368581A (en) * | 2021-06-22 | 2021-09-10 | 孔凡军 | Resource-saving micro-filter |
| CN114632382A (en) * | 2022-04-20 | 2022-06-17 | 南通久奇环保节能工程有限公司 | Waste gas treatment device with energy-saving and environment-friendly functions |
| CN115554762A (en) * | 2022-10-31 | 2023-01-03 | 徐州志欧机电设备有限公司 | A environmental protection microstrainer for sewage treatment |
| CN116196684A (en) * | 2023-05-05 | 2023-06-02 | 山东济钢环保新材料有限公司 | Mining site sewage treatment device |
| CN116196684B (en) * | 2023-05-05 | 2023-07-18 | 山东济钢环保新材料有限公司 | Mining site sewage treatment device |
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Application publication date: 20201103 |
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| WW01 | Invention patent application withdrawn after publication |