CN107261601B - Filter for treating fine fluff in sewage - Google Patents
Filter for treating fine fluff in sewage Download PDFInfo
- Publication number
- CN107261601B CN107261601B CN201710625908.5A CN201710625908A CN107261601B CN 107261601 B CN107261601 B CN 107261601B CN 201710625908 A CN201710625908 A CN 201710625908A CN 107261601 B CN107261601 B CN 107261601B
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- CN
- China
- Prior art keywords
- barrel body
- waste discharge
- sewage
- waste
- supporting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010865 sewage Substances 0.000 title claims abstract description 65
- 239000002699 waste material Substances 0.000 claims abstract description 100
- 238000001914 filtration Methods 0.000 claims abstract description 43
- 239000004744 fabric Substances 0.000 claims description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000004677 Nylon Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920004933 Terylene® Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 101150114468 TUB1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005192 partition 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
- B01D29/50—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 multiple filtering elements, characterised by their mutual disposition
- B01D29/56—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 multiple filtering elements, characterised by their mutual disposition in series connection
-
- 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
- B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
- B01D29/27—Filter bags
Abstract
The invention provides a filter for treating fine fluff in sewage, which comprises a barrel body connected with an upper cover, wherein a sewage inlet pipe is arranged on the upper cover, and a plurality of hollow tubular supporting legs are circumferentially arranged on the outer surface of the barrel body; at least one layer of filtering device is longitudinally arranged in the barrel body, at least one waste overflow port is arranged on the inner wall of the barrel body corresponding to each layer of filtering device, each waste overflow port is correspondingly communicated with each supporting leg, an outer waste discharge port is arranged on each supporting leg, an outer waste discharge supporting plate is arranged in each supporting leg, the outer waste discharge supporting plates are obliquely arranged, the high ends of the outer waste discharge supporting plates are fixed on the outer wall of the barrel body, the outer waste discharge supporting plates extend outwards through the lower ends of the outer waste discharge ports, the lower ends of the outer waste discharge supporting plates are connected to the outer wall of the supporting legs through connecting plates, and waste discharged from the waste overflow ports is discharged through the outer waste discharge ports; the lower end of the barrel body is provided with a perforated baffle plate, the bottom end of the barrel body is provided with a sewage outlet pipe, and the upper end of the sewage outlet pipe is connected to the through hole of the perforated baffle plate. The filter can effectively filter fine fluff.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a filter for treating fine fluff in sewage.
Background
Water is a source of human life and generates a large amount of wastewater in industrial production and in people's daily life. When the existing sewage treatment device is used for treating sewage, a filtering mode is adopted, so that waste in the sewage can be filtered, for example, a large piece of waste in the sewage can be filtered.
However, the waste water produced in factories like wool factories contains many fine fluff, and such waste water cannot be treated well by the filters in the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a filter for treating fine fluff in sewage, so that the fine fluff can be effectively filtered, and further the sewage treatment requirements of factories such as wool factories and the like are met.
In order to achieve the above purpose, the invention provides a filter for treating fine fluff in sewage, comprising a barrel body, wherein an upper cover is connected to the barrel body, a sewage inlet pipe is arranged on the upper cover, a plurality of supporting legs are circumferentially arranged on the outer surface of the barrel body, the supporting legs are uniformly arranged along the circumferential direction of the outer surface of the barrel body, and the supporting legs are hollow and tubular; at least one layer of filtering device is longitudinally arranged in the barrel body, at least one waste overflow port is arranged on the inner wall of the barrel body corresponding to each layer of filtering device, each waste overflow port is correspondingly communicated with each supporting leg, an outer waste discharge port is further arranged on each supporting leg, an outer waste discharge supporting plate is further arranged in each supporting leg, the outer waste discharge supporting plates are obliquely arranged, the high ends of the outer waste discharge supporting plates are fixed on the outer wall of the barrel body, the outer waste discharge supporting plates extend outwards through the lower ends of the outer waste discharge ports, the lower ends of the outer waste discharge supporting plates are connected to the outer wall of the supporting legs through connecting plates, and waste discharged from the waste overflow ports is discharged through the outer waste discharge ports; the lower end part of the inside of the barrel body is also provided with a perforated baffle plate, the bottom end of the barrel body is provided with a sewage outlet pipe, and the upper end of the sewage outlet pipe is connected to a through hole of the perforated baffle plate;
each layer of filtering device comprises a concave water supporting plate, filtering cloth, a flow guiding column and an inner baffle ring, wherein the concave water supporting plate and the inner baffle ring are sequentially arranged along the longitudinal direction of a barrel body, the concave water supporting plate and the inner baffle ring are all circumferentially arranged along the inner wall of the barrel body, the middle part of the concave water supporting plate is provided with a through hole, the filtering cloth is tower-shaped, the bottom end of the filtering cloth is circumferentially fixed on the inner baffle ring, the top end of the filtering cloth is fixed on the flow guiding column, the flow guiding column is arranged above the concave water supporting plate through a pull rod, the pull rod passes through the through hole on the concave water supporting plate, the lower end of the pull rod is fixed on the baffle with holes, a plurality of waste overflow ports are formed in the inner wall of the barrel body opposite to the bottom end of the filtering cloth, and each waste overflow port is respectively communicated with each supporting leg;
the filter cloth is made of terylene filter cloth, polypropylene filter cloth or nylon screen cloth.
The filter for treating fine fluff in sewage has the beneficial effects that the filter for treating fine fluff in sewage can effectively filter fine fluff, and can meet the sewage treatment requirements of factories such as wool factories.
Drawings
Fig. 1 is a schematic view showing a cross-sectional front view of a filter for treating fine fluff in sewage according to a first embodiment of the present invention.
Fig. 2 shows a schematic top view of the filter for treating fine fluff in sewage of fig. 1.
Fig. 3 shows a combined use state diagram of a plurality of filters for treating fine fluff in sewage in the first embodiment.
Fig. 4 is a schematic view showing a cross-sectional front view of a filter for treating fine fluff in sewage according to a second embodiment of the present invention.
Fig. 5 shows a combined use state diagram of a plurality of filters for treating fine fluff in sewage in the second embodiment.
Reference numerals: 1-a barrel body, 2-a first flange joint, 3-an upper cover, 4-a second flange joint, 5-a sewage inlet pipe, 6-a third flange joint, 7-a first filter cloth, 8-a first inner baffle ring, 9-a first waste overflow port, 10-a second filter cloth, 11-a second inner baffle ring, 12-a second waste overflow port, 13-an outer waste discharge port, 14-an outer waste discharge supporting plate, 15-a supporting leg, 151-a first supporting leg, 152-a second supporting leg, 16-a perforated baffle plate, 17-a sewage outlet pipe, 18-a fourth flange joint, 19-a total inlet pipe, 20-a first concave water supporting plate, 21-a third filter cloth, 22-a first guide column, 23-a third inner baffle ring, 24-a second concave water supporting plate, 25-a fourth filter cloth, 26-a second guide column, 27-a fourth inner baffle ring, 28-a fourth waste overflow port, 29-a fourth waste overflow port and 30-a pull rod.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
Example 1
As shown in fig. 1 and 2, the filter for treating fine fluff in sewage in this embodiment includes a tank body 1, the tank body 1 is connected with an upper cover 3 through a flange (specifically, a first flange joint 2 is provided at an upper end of the tank body 1, a second flange joint 4 is provided at a lower end of the upper cover 3, the first flange joint 2 and the second flange joint 4 are connected together through a bolt), a sewage inlet pipe 5 is provided on the upper cover 3, and a third flange joint 6 for connection is also provided at an upper end of the sewage inlet pipe 5; the outer surface circumference of the barrel body 1 is uniformly provided with a plurality of supporting legs 15, the supporting legs 15 are hollow tubular, at least one layer of filtering device is arranged in the barrel body 1, and in the embodiment, two layers of filtering devices are arranged for illustration.
The upper filter device comprises a first filter cloth 7 and a first inner baffle ring 8, wherein the first inner baffle ring 8 is arranged along the circumference of the inner wall of the barrel body 1, the first filter cloth 7 is obliquely arranged, the high end of the first filter cloth is fixed on the inner wall of the barrel body 1, the low end of the first filter cloth is fixed on the first inner baffle ring 8, in the embodiment, the first filter cloth 7 is elliptical, and the first filter cloth 7 can be polyester filter cloth, polypropylene filter cloth or nylon screen cloth. A first waste overflow port 9 is formed on the inner wall of the tub body 1 opposite to the lower end of the first filter cloth 7, and the first waste overflow port 9 is communicated with the corresponding leg 15, in this embodiment, it is assumed that the first waste overflow port 9 is communicated with the first leg 151, so that the waste filtered by the first filter cloth 7 can be discharged from the first waste overflow port 9 into the first leg 151.
The lower layer filtering device has a structure similar to that of the upper layer filtering device, and comprises a second filtering cloth 10 and a second inner baffle ring 11, wherein the second inner baffle ring 11 is circumferentially arranged along the inner wall of the barrel body 1, the second filtering cloth 10 is obliquely arranged, the high end of the second filtering cloth is fixed on the inner wall of the barrel body 1 below the first inner baffle ring 8, and the low end of the second filtering cloth is fixed on the second inner baffle ring 11; a second waste overflow port 12 is formed on the inner wall of the tub body 1 opposite to the lower end of the second filter cloth 10, and the second waste overflow port 12 is communicated with the corresponding leg 15, in this embodiment, the second waste overflow port 12 is communicated with the second leg 152, so that the waste filtered by the second filter cloth 10 can be discharged from the second waste overflow port 12 into the second leg 152.
In this embodiment, the first leg 151 and the second leg 152 are symmetrically disposed on both sides of the tub 1. The first supporting leg 151 and the second supporting leg 152 are respectively provided with an outer waste discharge port 13, the first supporting leg 151 and the second supporting leg 152 are respectively internally provided with an outer waste discharge supporting plate 14, the outer waste discharge supporting plates 14 are obliquely arranged, the high ends of the outer waste discharge supporting plates are fixed on the outer wall of the barrel body 1, the outer waste discharge supporting plates 14 extend outwards through the lower ends of the outer waste discharge ports 13, and the low ends of the outer waste discharge supporting plates 14 are connected to the outer wall of the supporting leg 15 through connecting plates. The waste discharged from the first waste overflow 9 and the second waste overflow 12 are discharged through the waste discharge outlet 13.
The lower end part inside the barrel body 1 is provided with a perforated baffle 16, the bottom end of the barrel body 1 is provided with a sewage outlet pipe 17, the upper end of the sewage outlet pipe 17 is connected to the through hole of the perforated baffle 16, and the lower end of the sewage outlet pipe 17 is provided with a fourth flange joint 18.
The working procedure of the filter for treating fine fluff in sewage according to this embodiment is as follows: sewage enters the filter through the sewage inlet pipe 5, is filtered for the first time through the first filter cloth 7, and filtered fine fluff and other waste materials are discharged to the outer waste discharge supporting plate 14 in the first supporting leg 151 through the first waste overflow port 9, and are further discharged through the outer waste discharge port 13 on the first supporting leg 151; the sewage passing through the first filter cloth 7 is filtered by the second filter cloth 10 for the second time, and the filtered fine fluff and other waste materials are discharged to the outer waste discharge supporting plate 14 in the second supporting leg 152 through the second waste overflow port 12, and then discharged through the outer waste discharge port 13 in the second supporting leg 152.
When a large amount of sewage is to be treated, as shown in fig. 3, a plurality of filters for treating fine hair in sewage may be used in combination, and the sewage inlet pipe 5 of each filter for treating fine hair in sewage is connected to the total inlet pipe 19 through a flange, so that a large amount of sewage can be treated.
Example 2
As shown in fig. 4, the filter for treating fine fluff in sewage in this embodiment includes a tank body 1, the tank body 1 is connected with an upper cover 3 through a flange (specifically, a first flange joint 2 is provided at an upper end of the tank body 1, a second flange joint 4 is provided at a lower end of the upper cover 3, the first flange joint 2 and the second flange joint 4 are connected together through a bolt), a sewage inlet pipe 5 is provided on the upper cover 3, and a third flange joint 6 for connection is also provided at an upper end of the sewage inlet pipe 5; the outer surface circumference of the barrel body 1 is uniformly provided with a plurality of supporting legs 15, the supporting legs 15 are hollow tubular, at least one layer of filtering device is arranged in the barrel body 1, and in the embodiment, two layers of filtering devices are arranged for illustration.
The upper layer filtering device comprises a first concave water supporting plate 20, a third filtering cloth 21, a first flow guiding column 22 and a third inner baffle ring 23, wherein the first concave water supporting plate 20 and the third inner baffle ring 23 are sequentially arranged along the longitudinal direction of the barrel body 1, the first concave water supporting plate 20 and the third inner baffle ring 23 are all arranged along the circumferential direction of the inner wall of the barrel body 1, through holes are formed in the middle part of the first concave water supporting plate 20, the third filtering cloth 21 can adopt polyester filtering cloth, polypropylene filtering cloth or nylon screen cloth, in the embodiment, the third filtering cloth 21 is tower-shaped, the bottom end of the third filtering cloth is circumferentially fixed on the third inner baffle ring 23, the top end of the third filtering cloth is fixed on the first flow guiding column 22, the first flow guiding column 22 is arranged above the first concave water supporting plate 20 through a pull rod 30, the lower end of the pull rod 30 is fixed on a baffle 16 with holes arranged at the inner end part of the barrel body 1, and the third filtering cloth 21 is opposite to the bottom end of the third supporting leg 21, three wastes can be discharged from the third supporting leg 28 to the third supporting leg 15, and three wastes can be discharged from the third supporting leg 15 to the inner wall 15 respectively.
The structure of the lower-layer filtering device is similar to that of the upper-layer filtering device, the lower-layer filtering device comprises a second concave water supporting plate 24, a fourth filter cloth 25, a second flow guiding column 26 and a fourth inner baffle ring 27, wherein the second concave water supporting plate 24 is arranged below the third inner baffle ring 23, the second concave water supporting plate 24 and the fourth inner baffle ring 27 are sequentially arranged along the longitudinal direction of the barrel body 1, the second concave water supporting plate 24 and the fourth inner baffle ring 27 are all circumferentially arranged along the inner wall of the barrel body 1, through holes are formed in the middle of the second concave water supporting plate 24, the fourth filter cloth 25 is tower-shaped, the bottom end of the fourth filter cloth is circumferentially fixed on the fourth inner baffle ring 27, the top end of the fourth filter cloth is fixed on the second flow guiding column 26, the second flow guiding column 26 is arranged above the second concave water supporting plate 24 through a pull rod 30, a plurality of overflow ports 29 are formed in the inner wall of the barrel body 1 opposite to the bottom end of the fourth filter cloth 25, the fourth support legs 29 are respectively communicated with waste materials 15 from the fourth support legs 29 to the fourth support legs 29, and waste materials can be discharged from the fourth support legs 29 to the fourth support legs 15.
The supporting leg 15 is also provided with an outer waste discharge port 13, the supporting leg 15 is also internally provided with an outer waste discharge supporting plate 14, the outer waste discharge supporting plate 14 is obliquely arranged, the high end of the outer waste discharge supporting plate is fixed on the outer wall of the barrel body 1, the outer waste discharge supporting plate 14 extends outwards through the lower end of the outer waste discharge port 13, and the low end of the outer waste discharge supporting plate is connected to the outer wall of the supporting leg 15 through a connecting plate. The waste materials discharged from the third waste overflow port 28 and the fourth waste overflow port 29 are discharged through the waste discharge port 13.
The bottom of the barrel body 1 is provided with a sewage outlet pipe 17, the upper end of the sewage outlet pipe 17 is connected to the through hole of the perforated partition plate 16, and the lower end of the sewage outlet pipe 17 is provided with a fourth flange joint 18.
The working procedure of the filter for treating fine fluff in sewage according to this embodiment is as follows: the sewage enters the filter through the sewage inlet pipe 5 and is collected through the first concave water supporting plate 20, then flows to the third filter cloth 21 through the through holes on the first concave water supporting plate 20 for first filtering, and the filtered fine fluff and other waste materials are discharged to the outer waste discharge supporting plate 14 in the supporting leg 15 through the third waste material overflow port 28 and then are discharged through the outer waste discharge port 13 on the supporting leg 15. The sewage filtered by the third filter cloth 21 is collected by the second concave water supporting plate 24, and then flows to the fourth filter cloth 25 through the through holes on the second concave water supporting plate 24 for the second filtering, and the filtered fine fluff and other waste materials are discharged to the outer waste discharge supporting plate 14 in the supporting leg 15 through the fourth waste overflow port 29, and then discharged through the outer waste discharge port 13 on the supporting leg 15.
As shown in fig. 5, when a large amount of sewage is to be treated, a plurality of filters for treating fine fluff in sewage may be used in combination, and the sewage inlet pipe 5 of each filter for treating fine fluff in sewage is connected to the total inlet pipe 19 through a flange, so that a large amount of sewage can be treated.
The filter for treating fine fluff in sewage can effectively filter the fine fluff, and can meet the sewage treatment requirements of factories such as wool factories.
Claims (1)
1. A filter for treating fine fluff in sewage, characterized in that: the sewage treatment device comprises a barrel body, wherein an upper cover is connected to the barrel body, a sewage inlet pipe is arranged on the upper cover, a plurality of supporting legs are circumferentially arranged on the outer surface of the barrel body, the supporting legs are uniformly arranged along the circumferential direction of the outer surface of the barrel body, and the supporting legs are hollow tubular; at least one layer of filtering device is longitudinally arranged in the barrel body, at least one waste overflow port is arranged on the inner wall of the barrel body corresponding to each layer of filtering device, each waste overflow port is correspondingly communicated with each supporting leg, an outer waste discharge port is further arranged on each supporting leg, an outer waste discharge supporting plate is further arranged in each supporting leg, the outer waste discharge supporting plates are obliquely arranged, the high ends of the outer waste discharge supporting plates are fixed on the outer wall of the barrel body, the outer waste discharge supporting plates extend outwards through the lower ends of the outer waste discharge ports, the lower ends of the outer waste discharge supporting plates are connected to the outer wall of the supporting legs through connecting plates, and waste discharged from the waste overflow ports is discharged through the outer waste discharge ports; the lower end part of the inside of the barrel body is also provided with a perforated baffle plate, the bottom end of the barrel body is provided with a sewage outlet pipe, and the upper end of the sewage outlet pipe is connected to a through hole of the perforated baffle plate;
each layer of filtering device comprises a concave water supporting plate, filtering cloth, a flow guiding column and an inner baffle ring, wherein the concave water supporting plate and the inner baffle ring are sequentially arranged along the longitudinal direction of a barrel body, the concave water supporting plate and the inner baffle ring are all circumferentially arranged along the inner wall of the barrel body, the middle part of the concave water supporting plate is provided with a through hole, the filtering cloth is tower-shaped, the bottom end of the filtering cloth is circumferentially fixed on the inner baffle ring, the top end of the filtering cloth is fixed on the flow guiding column, the flow guiding column is arranged above the concave water supporting plate through a pull rod, the pull rod passes through the through hole on the concave water supporting plate, the lower end of the pull rod is fixed on the baffle with holes, a plurality of waste overflow ports are formed in the inner wall of the barrel body opposite to the bottom end of the filtering cloth, and each waste overflow port is respectively communicated with each supporting leg;
the filter cloth is made of terylene filter cloth, polypropylene filter cloth or nylon screen cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625908.5A CN107261601B (en) | 2017-07-27 | 2017-07-27 | Filter for treating fine fluff in sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625908.5A CN107261601B (en) | 2017-07-27 | 2017-07-27 | Filter for treating fine fluff in sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107261601A CN107261601A (en) | 2017-10-20 |
| CN107261601B true CN107261601B (en) | 2023-07-04 |
Family
ID=60074667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710625908.5A Active CN107261601B (en) | 2017-07-27 | 2017-07-27 | Filter for treating fine fluff in sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107261601B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM327741U (en) * | 2007-09-29 | 2008-03-01 | Ding-Cheng Yu | Receiving chamber structure for mud processor capable of alternatively receiving sewage and mud |
| CN202962028U (en) * | 2012-09-26 | 2013-06-05 | 吴旭东 | Sewage filter |
| CN105246842A (en) * | 2013-04-22 | 2016-01-13 | 保罗·维特 | Dynamic dewatering system |
| CN205672635U (en) * | 2016-06-17 | 2016-11-09 | 东莞市精石达仪器有限公司 | The Sewage treatment filter that a kind of marble polishing grinds |
| CN206934867U (en) * | 2017-07-27 | 2018-01-30 | 威海双信节能环保设备有限公司 | A kind of water hangs down filter |
-
2017
- 2017-07-27 CN CN201710625908.5A patent/CN107261601B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM327741U (en) * | 2007-09-29 | 2008-03-01 | Ding-Cheng Yu | Receiving chamber structure for mud processor capable of alternatively receiving sewage and mud |
| CN202962028U (en) * | 2012-09-26 | 2013-06-05 | 吴旭东 | Sewage filter |
| CN105246842A (en) * | 2013-04-22 | 2016-01-13 | 保罗·维特 | Dynamic dewatering system |
| CN205672635U (en) * | 2016-06-17 | 2016-11-09 | 东莞市精石达仪器有限公司 | The Sewage treatment filter that a kind of marble polishing grinds |
| CN206934867U (en) * | 2017-07-27 | 2018-01-30 | 威海双信节能环保设备有限公司 | A kind of water hangs down filter |
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| Publication number | Publication date |
|---|---|
| CN107261601A (en) | 2017-10-20 |
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