CN113521870A - Filter - Google Patents
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- CN113521870A CN113521870A CN202110725662.5A CN202110725662A CN113521870A CN 113521870 A CN113521870 A CN 113521870A CN 202110725662 A CN202110725662 A CN 202110725662A CN 113521870 A CN113521870 A CN 113521870A
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- Prior art keywords
- filter
- water
- cylinder
- cartridge
- filtering structure
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 238000001914 filtration Methods 0.000 claims abstract description 62
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 239000003365 glass fiber Substances 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 26
- 239000010410 layer Substances 0.000 description 11
- 239000003814 drug Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OBMBUODDCOAJQP-UHFFFAOYSA-N 2-chloro-4-phenylquinoline Chemical compound C=12C=CC=CC2=NC(Cl)=CC=1C1=CC=CC=C1 OBMBUODDCOAJQP-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
Abstract
The invention relates to the technical field of filtration and discloses a filter. The filter comprises a barrel body (12) with an inner cavity, wherein a filtering structure, a water inlet cavity (3) and a water outlet cavity (18) are arranged in the barrel body, the water inlet cavity (3) and the water outlet cavity (18) are respectively positioned at two ends of the filtering structure and are mutually communicated through the filtering structure, a sealing structure (16) is arranged between the filtering structure and the inner wall of the barrel body, and the sealing structure (16) is set to be capable of preventing fluid in the water inlet cavity (3) from entering at least part of space between the filtering structure and the inner wall of the barrel body. According to the invention, the sealing structures are arranged at the two ends of the filtering structure, so that raw water cannot enter a space between the filtering structure and the inner wall of the barrel, and the contact area between the raw water and the barrel is reduced, thereby slowing down the corrosion of the raw water to the barrel, prolonging the service life of the filter, reducing the manual maintenance cost, reducing the pollution to the filtering structure, increasing the filtering effect of the filtering structure and prolonging the service life of the filtering structure.
Description
Technical Field
The invention relates to the technical field of filtration, in particular to a filter.
Background
The filter is usually arranged in front of the reverse osmosis device, the performance of the filter needs to meet the requirement index of the subsequent working section on water inflow, the service life of the reverse osmosis membrane is prolonged, pollutants such as tiny particles and bacteria in the filtered water are prevented, and in addition, the breakdown, blockage and damage of the filtered water to the reverse osmosis membrane element are avoided. In the use process of the filter, generally, raw water directly enters the filter element from the inlet to be filtered, and filtered clean water enters the water collecting area arranged below the tank body from the central hole of the filter element and flows out from the water outlet to finish the filtering process.
The filter operated by the current industrial device adopts a vertical columnar structure to internally arrange 108 filter elements, the length of the filter element is 1016mm, and the filtration degree is 5 mu m. Under the water supply pressure, after a large flow of water passes through the filter element, pollutants such as particles, bacteria, organic matters, water scales and the like are accumulated in the filter element. After long-time operation, partial filter element is deformed and damaged, even the physical structure of the filter element is damaged, and the service life of the filter element is shortened. And secondly, the barrel body in the filter, which is in contact with the raw water, is corroded by the raw water to rust, so that the strength of the barrel body of the filter is influenced, and the service life of the filter is shortened.
In addition, traditional filter core adopts the full flow to filter, and its filter core is most for melting and spout with folding type, and the filter core of present filter satisfies basic operation performance, nevertheless because of a great deal of short slabs such as filter core filtering quality is single, bear impact force weak relatively, barrier propterty is relatively poor, leads to that the filter can not be better filters aquatic impurity, has reduced the practicality of filter core, has increased artifical cost of maintenance.
Disclosure of Invention
The invention aims to overcome the problem that the service life of a filter is short due to the fact that the filter is corroded by raw water in the prior art, and provides the filter which can reduce the contact area of the raw water and a filter cylinder body and further prolong the service life of the filter.
In order to achieve the above object, in one aspect, the present invention provides a filter, which includes a cylinder having an inner cavity, a filter structure disposed in the cylinder, and a water inlet cavity and a water outlet cavity respectively disposed at two ends of the filter structure and communicated with each other through the filter structure, wherein a sealing structure is disposed between the filter structure and an inner wall of the cylinder, and the sealing structure is configured to prevent fluid in the water inlet cavity from entering at least a part of a space between the filter structure and the inner wall of the cylinder.
Optionally, the water inlet cavity and the water outlet cavity are respectively provided with a spring connecting frame, one end of the spring connecting frame is connected to the filtering structure, and the other end of the spring connecting frame is connected to the barrel.
Optionally, two ends of the cylinder are respectively provided with a motor which is correspondingly connected to the corresponding spring connecting frame in a transmission manner, and the motor is arranged to enable the filtering structure to rotate around the central axis of the cylinder.
Optionally, an output shaft of the motor extends into an inner cavity of the cylinder, and a sealing device is arranged between the output shaft and the cylinder.
Optionally, the filter structure comprises a stainless steel screen sleeve, a glass fiber layer and a filter element, which are coaxially arranged, wherein the glass fiber layer is wrapped outside the filter element and fixed inside the stainless steel screen sleeve.
Optionally, the filter structure comprises a holder formed with a plurality of spaces each accommodating a filter element, each filter element being arranged to extend between the inlet chamber and the outlet chamber in a direction parallel to the central axis of the cartridge.
Optionally, the filter unit comprises a plurality of filter members coaxially butted in sequence, and a filter screen is arranged between two adjacent filter members.
Optionally, the barrel is connected with a water inlet and a water inlet valve which are communicated with the water inlet cavity, the water inlet is connected with a water inlet pressure gauge, the barrel is connected with a water outlet and a water outlet valve which are communicated with the water outlet cavity, and the water outlet is connected with a water outlet pressure gauge and a flow meter.
Optionally, a gas inlet communicating with the at least part of the space between the filter structure and the inner wall of the cylinder is provided on the cylinder.
Optionally, the cylinder is provided with at least one of a gas outlet and a gas pressure gauge communicating with the at least part of the space between the filter structure and the inner wall of the cylinder.
According to the invention, the sealing structures are arranged at the two ends of the filtering structure, so that raw water cannot enter a space between the filtering structure and the inner wall of the barrel, and the contact area between the raw water and the barrel is reduced, thereby slowing down the corrosion of the raw water to the barrel, prolonging the service life of the filter, reducing the manual maintenance cost, reducing the pollution to the filtering structure, increasing the filtering effect of the filtering structure and prolonging the service life of the filtering structure.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of a filter according to the present invention;
figure 2 is a schematic view of a preferred embodiment of the filter structure of the present invention.
Description of the reference numerals
1-a water inlet; 2-water outlet; 3-a water inlet cavity; 4-a filter element; 5-a glass fiber layer; 6-stainless steel filter screen type sleeve; 7-a fixing frame; 8-water inlet pressure gauge; 9-water outlet pressure gauge; 10-a flow meter; 12-a cylinder body; 13-gas inlet; 14-a gas outlet; 15-a motor; 16-a sealing structure; 17-gas pressure gauge; 18-a water outlet cavity; 19-spring link carriage; 20-water outlet valve; 21-a water inlet valve; 22-an intake valve; 23-gas outlet valve.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation. In the present invention, the terms of orientation such as "inside and outside" used herein mean inside and outside with respect to the contour of each member itself, unless otherwise specified.
As shown in figure 1, the invention provides a filter, which comprises a cylinder body 12 with an inner cavity, wherein a filtering structure and a water inlet cavity 3 and a water outlet cavity 18 which are respectively positioned at two ends of the filtering structure and are mutually communicated through the filtering structure are arranged in the cylinder body 12, a sealing structure 16 is arranged between the filtering structure and the inner wall of the cylinder body 12, and the sealing structure 16 is arranged to prevent fluid in the water inlet cavity 3 from entering at least part of a space between the filtering structure and the inner wall of the cylinder body 12.
According to the invention, the sealing structures 16 are arranged at the two ends of the filtering structure, so that raw water cannot enter a space between the filtering structure and the inner wall of the cylinder 12, and the contact area between the raw water and the cylinder 12 is reduced, thereby slowing down the corrosion of the raw water to the cylinder 12, prolonging the service life of the filter and reducing the manual maintenance cost. In addition, the cylinder 12 corroded by the raw water pollutes the filtering structure, so the invention reduces the pollution to the filtering structure, increases the filtering effect of the filtering structure and prolongs the service life of the filtering structure.
Specifically, as shown in fig. 2, the filter structure comprises a stainless steel screen sleeve 6, a glass fiber layer 5 and a filter element 4 which are coaxially arranged, wherein the glass fiber layer 5 is wrapped outside the filter element 4 and fixed inside the stainless steel screen sleeve 6. The purpose of adopting glass fiber layer 5 parcel filter core 4 is in order to prevent that water supply pressure differential and large-traffic impact prevent that spare parts such as fixed knot structure rust from polluting filter core 4, slows down filter core 4 and warp and the life-span of extension filter core 4. In addition, because the glass fiber layer 5 also has a filtering effect, the surface layer is increased to be in initial contact with water for filtering, the load of the filter element 4 in the filter is reduced, the multi-layer filtering effect is realized, and the service life of the filter is further prolonged. It will be appreciated that the stainless steel screen sleeve 6 may be attached to the inner side of the barrel 12 by a mounting bracket and the filter element 4 and glass fibre layer 5 may be secured to the inside of the stainless steel screen sleeve 6 by any suitable means, such as by a snap and seal ring.
As a preferred embodiment, the cylinder 12 is connected with a water inlet 1 and a water inlet valve 21 which are communicated with the water inlet cavity 3, and in order to monitor the pressure in the water inlet cavity 3, the water inlet 1 is also connected with a water inlet pressure gauge 8. It will be appreciated that in other embodiments, the pressure gauge 8 may be connected to the outside of the inlet chamber. In addition, the cylinder 12 is connected with a water outlet 2 and a water outlet valve 20 which are communicated with the water outlet cavity 18, and the water outlet 2 is connected with a water outlet pressure gauge 9 and a flowmeter 10. Likewise, a pressure gauge 9 may be connected to the outside of the outlet chamber 18.
In a preferred embodiment of the present invention, the cylinder 12 is provided with a gas inlet 13 communicating with the at least part of the space between the filter structure and the inner wall of the cylinder 12, and a gas is pressurized into the filter from the gas inlet 13 to fill the at least part of the space with a pressurized gas, preferably nitrogen, to prevent oxidation of the filter structure, the pressurized gas having a pressure equal to the pressure in the inlet chamber 3, so that the pressure on both sides of the sealing structure 16 adjacent to the inlet chamber 3 is equalized, thereby reducing the probability of failure of the sealing structure 16 and increasing the service life of the sealing structure 16. In another embodiment of the present invention, when the water flow rate is relatively small, the pressure gas may not exist between the filter structure and the inner wall of the cylinder 12, and in other cases, a steel plate with enough strength may be used as the sealing structure 16, and the outer side of the steel plate is welded and sealed with the cylinder 12, and the inner side is welded and sealed with the filter structure, so as to realize the sealing between the water inlet chamber 3 and the filter structure.
Further, in other embodiments of the present invention, in order to monitor the gas pressure inside the cylinder 12, the cylinder 12 may be provided with a gas pressure gauge 17 communicating with the at least partial space between the filter structure and the inner wall of the cylinder 12, and in order to prevent the gas pressure inside the cylinder 12 from exceeding the actually required pressure, the cylinder 12 may be provided with a gas outlet 14 communicating with the at least partial space between the filter structure and the inner wall of the cylinder 12. It will be appreciated that the cylinder 12 may be provided with both the gas pressure gauge 17 and the gas outlet 14, or alternatively one of the gas pressure gauge 17 and the gas outlet 14. In addition, in order to switch the pressure gas on or off, an inlet valve 22 may be provided at the gas inlet 13 and an outlet valve 23 may be provided at the gas outlet 14.
In one embodiment of the present invention, as shown in fig. 1, a spring connecting rack 19 is respectively disposed in the inlet chamber 3 and the outlet chamber 18, and one end of the spring connecting rack 19 is connected to the filtering structure, and the other end is connected to the inside of the barrel 12. Because the rigidity of the filter structure in the axial direction is relatively high, if the filter structure is fixed by using a bracket which cannot be adjusted in the length direction, the problem that one end of the filter structure cannot be fixed and the other end of the filter structure cannot be fixed occurs, and therefore, the problem that the filter structure cannot be installed or is difficult to install is effectively solved by using the spring connecting frame 19 which can be adjusted in the length direction to fix the filter structure. The spring attachment brackets 19 are preferably V-shaped spring attachment brackets, or any other adjustable length attachment brackets.
When the filter is in operation for a period of time, the filter needs to be cleaned, and the following methods are currently used to clean the filter: firstly, adding acid detergent into a dispensing boxPreparing a washing agent and clear water to obtain an acidic liquid medicine, then conveying the acidic liquid medicine to the filter by a high-pressure pump, soaking the filter for 1-15 hours (the soaking time can be adjusted according to the pollution blockage condition), then conveying the acidic liquid medicine to the filter by the high-pressure pump for washing, and after circulating for 40 minutes, closing the high-pressure pump; then adding an alkaline cleaning agent and clear water into the dispensing box for preparation to obtain an alkaline liquid medicine, then conveying the alkaline liquid medicine to the filter by the high-pressure pump for cleaning, and after circulating for 40 minutes, closing the high-pressure pump; finally, the filter is cleaned by clean water, the outlet pressure of the high-pressure pump is controlled to be 0.2-0.3MPa, and the flow rate is controlled to be 24-30m3And/h, circulating for 2-3 minutes.
However, as the raw water contains pollutants such as particles, bacteria, organic matters and scale, impurities in the filter element cannot be thoroughly cleaned when the filter is cleaned, and residual pollutants are in the filter element, the two ends of the cylinder 12 are respectively provided with the motor 15 which is correspondingly connected to the corresponding spring connecting frames 19 in a transmission manner, the motor 15 is arranged to enable the filter structure to rotate around the central axis of the cylinder 12, the filter structure is rotated for 360 degrees by controlling the motor 15, so that the acid-base agent liquid medicine is in contact with the filter structure to the maximum extent, and in addition, the filter structure throws the residual pollutants out of the interior of the filter structure under the centrifugal force, so that thorough cleaning is realized.
As shown in fig. 2, the filter structure further comprises a holder 7, the holder 7 being formed with a plurality of spaces in which filter units are respectively accommodated, each of the filter units being arranged to extend between the inlet chamber 3 and the outlet chamber 18 in a direction parallel to the central axis of the cartridge 12. In particular, the fixing frame 7 may be a cross fixing frame, or a squared figure fixing frame. The holder 7 may be attached to the inside of the cylinder 12 by any suitable means, such as welding. When the at least partial space between the filter structure and the inner wall of the cylinder 12 is filled with the pressure gas, the fixing frame 7 may be provided with a plurality of through holes so that the at least partial space is filled with the pressure gas.
Further, the filtering unit comprises a plurality of filtering pieces which are coaxially butted in sequence, and a filtering net is arranged between every two adjacent filtering pieces. When the water flow required to be filtered is large, a plurality of filtering pieces can be connected in series at the same time, each filtering piece comprises a stainless steel filtering net type sleeve 6, a glass fiber layer 5 and a filtering core 4 which are coaxially arranged, and the glass fiber layer 5 is wrapped on the outer side of the filtering core 4 and fixed inside the stainless steel filtering net type sleeve 6. Further, two of the filter members adjacent to each other are connected by a spring coupling frame 19 so as to be rotated by the motor 15.
In an embodiment of the present invention, when the filtering structure comprises a plurality of filtering elements coaxially butted in sequence, a plurality of motors 15 can be arranged outside the two ends of the cylinder 12, and one motor 15 is coaxially corresponding to each end of each filtering element, so that the two coaxial motors 15 can rotate the corresponding filter around the axis thereof, and the thorough cleaning effect is also realized.
Further, in order to transmit the torque of the motor 15 to the filtering structure, an output shaft of the motor 15 extends through the inner cavity of the cylinder 12, and in addition, in order to ensure the sealing between the output shaft and the cylinder 12, a sealing device is arranged between the output shaft and the cylinder 12.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. A filter, characterized in that, the filter includes barrel (12) that has the inner chamber, be equipped with filtration in the barrel (12) and be located this filtration both ends respectively and through intake chamber (3) and play water cavity (18) of this filtration intercommunication each other, be equipped with seal structure (16) between the filtration and the inner wall of barrel (12), this seal structure (16) sets up to be able to prevent the fluid in intake chamber (3) gets into in the filtration and at least part space between the inner wall of barrel (12).
2. A filter according to claim 1, characterised in that spring connection brackets (19) are provided in the inlet chamber (3) and the outlet chamber (18), respectively, said spring connection brackets (19) being connected to the filtering structure at one end and to the cartridge (12) at the other end.
3. A filter according to claim 2, characterised in that the two ends of the cylinder (12) are each provided with a motor (15) in corresponding driving connection to the respective spring-loaded bracket (19), the motors (15) being arranged so as to be able to rotate the filter structure about the central axis of the cylinder (12).
4. A filter according to claim 3, characterised in that the output shaft of the motor (15) extends through the interior of the cartridge (12) and sealing means are provided between the output shaft and the cartridge (12).
5. A filter according to claim 1, characterised in that the filtering structure comprises a stainless steel screen sleeve (6), a glass fibre layer (5) and a filter element (4) arranged coaxially, the glass fibre layer (5) being wrapped outside the filter element (4) and fixed inside the stainless steel screen sleeve (6).
6. A filter according to claim 1, characterised in that the filtering structure comprises a holder (7), the holder (7) being formed with a plurality of spaces in which filter units are respectively accommodated, each filter unit being arranged to extend between the inlet chamber (3) and the outlet chamber (18) in a direction parallel to the central axis of the cartridge (12).
7. A filter according to claim 6, wherein the filter unit comprises a plurality of filter members coaxially butted in sequence, and a filter net is disposed between two adjacent filter members.
8. The filter of claim 1, wherein the cylinder (12) is connected with a water inlet (1) and a water inlet valve (21) which are communicated with the water inlet cavity (3), the water inlet (1) is connected with a water inlet pressure gauge (8), the cylinder (12) is connected with a water outlet (2) and a water outlet valve (20) which are communicated with the water outlet cavity (18), and the water outlet (2) is connected with a water outlet pressure gauge (9) and a flow meter (10).
9. A filter according to claim 1, characterised in that the cartridge (12) is provided with a gas inlet (13) communicating with the at least part of the space between the filter structure and the inner wall of the cartridge (12).
10. A filter according to claim 9, characterised in that the cartridge (12) is provided with at least one of a gas outlet (14) and a gas pressure gauge (17) communicating with the at least part of the space between the filter structure and the inner wall of the cartridge (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110725662.5A CN113521870A (en) | 2021-06-29 | 2021-06-29 | Filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110725662.5A CN113521870A (en) | 2021-06-29 | 2021-06-29 | Filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113521870A true CN113521870A (en) | 2021-10-22 |
Family
ID=78126165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110725662.5A Pending CN113521870A (en) | 2021-06-29 | 2021-06-29 | Filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113521870A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104415594A (en) * | 2013-08-26 | 2015-03-18 | 陈刚 | Carbon dioxide-enriched methanol filter |
| CN204656349U (en) * | 2015-05-14 | 2015-09-23 | 金科水务工程(北京)有限公司 | A kind of vertical pressure leaching film filtering system |
| CN108031158A (en) * | 2017-12-21 | 2018-05-15 | 玉环县红日阀门有限公司 | Purifier and its control method with leak-proof anti-explosive and automatic cleaning function |
| CN208583055U (en) * | 2018-07-17 | 2019-03-08 | 广东众和中德精细化工研究开发有限公司 | A kind of glue filter |
| US10245525B1 (en) * | 2017-11-10 | 2019-04-02 | NextLeaf Solutions Ltd. | Closed-loop multi-stage chilled filter system |
| CN209500968U (en) * | 2018-12-28 | 2019-10-18 | 苏州腾纳环保科技有限公司 | Convenient for clean central purifier |
| CN210159281U (en) * | 2019-06-26 | 2020-03-20 | 上海楚能工业过滤系统有限公司 | Horizontal large-flow filter |
| CN213327037U (en) * | 2020-07-08 | 2021-06-01 | 厦门萨奇水务有限公司 | Nitrogen quality-guaranteeing water treatment filtering material device |
-
2021
- 2021-06-29 CN CN202110725662.5A patent/CN113521870A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104415594A (en) * | 2013-08-26 | 2015-03-18 | 陈刚 | Carbon dioxide-enriched methanol filter |
| CN204656349U (en) * | 2015-05-14 | 2015-09-23 | 金科水务工程(北京)有限公司 | A kind of vertical pressure leaching film filtering system |
| US10245525B1 (en) * | 2017-11-10 | 2019-04-02 | NextLeaf Solutions Ltd. | Closed-loop multi-stage chilled filter system |
| CN108031158A (en) * | 2017-12-21 | 2018-05-15 | 玉环县红日阀门有限公司 | Purifier and its control method with leak-proof anti-explosive and automatic cleaning function |
| CN208583055U (en) * | 2018-07-17 | 2019-03-08 | 广东众和中德精细化工研究开发有限公司 | A kind of glue filter |
| CN209500968U (en) * | 2018-12-28 | 2019-10-18 | 苏州腾纳环保科技有限公司 | Convenient for clean central purifier |
| CN210159281U (en) * | 2019-06-26 | 2020-03-20 | 上海楚能工业过滤系统有限公司 | Horizontal large-flow filter |
| CN213327037U (en) * | 2020-07-08 | 2021-06-01 | 厦门萨奇水务有限公司 | Nitrogen quality-guaranteeing water treatment filtering material device |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211022 |
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| RJ01 | Rejection of invention patent application after publication |