CN113926232B - Automatic back flush filter - Google Patents
Automatic back flush filter Download PDFInfo
- Publication number
- CN113926232B CN113926232B CN202111270169.5A CN202111270169A CN113926232B CN 113926232 B CN113926232 B CN 113926232B CN 202111270169 A CN202111270169 A CN 202111270169A CN 113926232 B CN113926232 B CN 113926232B
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- Prior art keywords
- machine body
- piston
- backwashing
- groove
- filter
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000011001 backwashing Methods 0.000 claims abstract description 33
- 230000000694 effects Effects 0.000 description 13
- 238000001914 filtration Methods 0.000 description 11
- 230000009471 action Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 241000425571 Trepanes Species 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 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
- B01D29/11—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
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- 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
- B01D29/52—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 parallel connection
- B01D29/54—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 parallel connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to the technical field of filter equipment and discloses an automatic backwashing filter.A water inlet groove communicated with a water inlet is formed in the inner wall of one side of a machine body, filter elements concentric with the inner cylinder of the machine body are uniformly and fixedly arranged on the inner wall of the machine body, a backwashing cylinder is fixedly arranged at the top of a discharge outlet in the machine body, a main control rod is fixedly arranged in the middle of the backwashing cylinder, a piston is movably sleeved in a sleeve hole, a pressure head is movably sleeved in the chute, a limit groove is formed in the middle of the piston, electromagnets are fixedly arranged in the positions, such as the center of the main control rod and the filter elements, of the main control rod, the end surfaces of the main control rod, close to one side of the piston, of the sleeve rod are symmetrically provided with switch grooves at the two sides, the filter elements are designed into an annular structure, and the main control rod, the electromagnets and the electromagnets are arranged in the machine body to work in a matched mode, so that the efficiency of the filter elements in the work is improved, the backwashing quality is improved, the backwashing times are reduced, and the backwashing times of water resources are saved.
Description
Technical Field
The invention relates to the technical field of filtering equipment, in particular to an automatic backwashing filter.
Background
All can use the filter at water purification's in-process, and the filter is using a period of time after the filtering layer inside just to accumulate certain impurity and lead to the filter effect to descend, directly change the filter core generally, but it is more loaded down with trivial details like this, adopt the back flush filter now more, it is provided with the blowoff valve of back flush in the bottom department of filter core, thereby will control electromagnetic switch to open the blowoff valve and carry out the back flush blowdown when the filter effect of filter core reduces to certain degree, though it uses more conveniently but still exists not enough:
the filter element structure is vertically installed when the backwashing filter is used, so that the water pressure conditions received at the top and the bottom of the filter element are different greatly, different filtering strengths can be caused when filtering is carried out, different impurity blocking conditions on different heights of the filter element are caused, and backwashing is actually carried out on one section of the filter element only through backwashing filtering at the moment, so that water is wasted due to high backwashing frequency, water is wasted due to too much water flowing at parts with less blocking during backwashing, and meanwhile, partial region is lowered due to the fact that the filtering effect of the vertical filter element is lowered due to the fact that the filtering effect is lowered, so that the detection is not accurate, the backwashing frequency is increased, the filtering effect is influenced, and a large amount of water resource waste is caused.
Disclosure of Invention
Aiming at the defects of the background technology, the invention provides an automatic backwashing filter which has the advantages of high filtering efficiency and good backwashing effect, and solves the problems in the background technology.
The invention provides the following technical scheme: the utility model provides an automatic back flush filter, includes the organism, the water inlet has been seted up to one side of bottom of the body, the delivery port has been seted up at the organism top, the escape orifice has been seted up to the centre of bottom of the body, the intake chamber with the water inlet intercommunication is seted up to the inner wall of organism one side, the even fixed mounting of organism inner wall has the filter core with the organism inner tube is concentric, the organism inner wall is located the distributive port of seting up the intercommunication between intake chamber and the filter core, the inside escape orifice top position fixed mounting that is located of organism has the back flush section of thick bamboo, the middle part fixed mounting of back flush section of thick bamboo has the master control pole, the trepanning has been seted up with the junction of filter core to the back flush section of thick bamboo, the piston has been cup jointed in the inside activity of trepanning.
Preferably, the middle part of one side that the piston is close to the water diversion opening has seted up the spout, the inside activity of spout has cup jointed the pressure head, the spacing groove has been seted up at the middle part of piston, the interior terminal surface fixedly connected with of pressure head cup joints the loop bar inside the piston, the inside bilateral symmetry fixed mounting that is located the spacing groove of piston has bar magnet, the middle part outer lane fixed mounting of loop bar has the arch of cup jointing at the spacing inslot, fixedly connected with supporting spring between pressure head and the spout inner wall, the inside fixed mounting of eminence such as master control lever center and filter core has the electro-magnet, the middle part fixed mounting that the master control lever is close to piston one side has cup jointed the dead lever inside the loop bar, the master control lever is close to piston one side terminal surface and is located loop bar bilateral position symmetry and has seted up the switch groove, the inside activity of switch groove has cup jointed the kicking block, fixedly connected with reset spring between kicking block and the switch inslot wall, kicking block medial surface fixedly connected with conductive ball, switch inslot inside wall fixed mounting has two conductive poles.
Preferably, the electromagnet generates a magnetic repulsion force to the bar magnet after being electrified, the magnetic repulsion force is larger than the water pressure applied to the outer side of the piston, two sides of the outer end of the loop bar extend and just correspond to the outer side surface of the ejector block in position, and the maximum sliding limiting length inside the limiting groove is equal to the maximum sliding limiting length inside the switch groove.
Preferably, the distance length between the two conducting rods in the switch groove is smaller than the diameter length of the conducting ball, the conducting rods between the two switch grooves are linearly connected through a conducting wire, the top block slides in the switch groove in a limiting mode, and the maximum limiting length is larger than the length of the conducting rod.
The invention has the following beneficial effects:
through the filter core of design annular structure, and set up structures such as master control pole in organism and cooperate the work, compare in prior art, utilize a plurality of annular filter cores at co-altitude not to filter, can avoid effectively that the local filter screen that causes because of high water pressure blocks up the disparity big, make each position filter effect on single filter core even, the number of times of carrying out the back flush because the local jam is serious has also been reduced simultaneously, time of saving rate and water resource, adopt piston structure to slide and can be controlled by the electro-magnet between water knockout drum and trepanning simultaneously, utilize the inside water pressure of filter core to strike the condition and carry out the back flush automatically, because the difference in height of annular filter core is very little, can play each position back flush with water pressure basically effectively, guarantee that the effect of back flush is better more even, improve filtration efficiency.
Drawings
FIG. 1 is an overall longitudinal half-sectional view of the structure of the present invention;
FIG. 2 is an overall transverse half-sectional view of the structure of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is an enlarged view of FIG. 2 at B;
fig. 5 is a schematic diagram of a conventional backwashing filter structure.
In the figure: 1. a body; 101. a water inlet; 102. a water outlet; 103. a drain port; 104. a water inlet tank; 105. a water diversion port; 2. a filter element; 3. a backwash drum; 301. trepanning; 4. a master lever; 401. a switch slot; 5. a piston; 501. a chute; 502. a limiting groove; 6. a pressure head; 7. a loop bar; 8. a support spring; 9. an electromagnet; 10. a bar magnet; 11. fixing the rod; 12. a top block; 13. a return spring; 14. a conductive rod; 15. and a conductive ball.
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, fig. 2, fig. 3 and fig. 4, the automatic backwashing filter includes a machine body 1, a water inlet 101 is formed in one side of the bottom of the machine body 1, a water outlet 102 is formed in the top of the machine body 1, a drain outlet 103 is formed in the middle of the bottom of the machine body 1, a water inlet groove 104 communicated with the water inlet 101 is formed in the inner wall of one side of the machine body 1, and filter elements 2 concentric with the inner cylinder of the machine body 1 are uniformly and fixedly mounted on the inner wall of the machine body 1. The filter element 2 is of an annular structure, so that when the filter element 2 works, the filter effect of each part is the same under the condition of basically same water pressure, more uniform work is favorable for long-term use, the inner wall of the machine body 1 is positioned between the water inlet tank 104 and the filter element 2 and is provided with a communicated water diversion port 105, the top part of the drain port 103 in the machine body 1 is fixedly provided with the backwashing cylinder 3, the distance from the inner ring of the filter element 2 to the outer ring of the backwashing cylinder 3 is equal to the distance from the outer ring of the filter element 2 to the inner wall of the machine body 1, so that water filtered by the filter element 2 can be uniformly distributed in the machine body 1, meanwhile, the middle of the top part provided with the water outlet 102 can also reduce the influence caused by the flow rate, the work uniformity of each part of the filter element 2 is more favorable, the middle part of the backwashing cylinder 3 is fixedly provided with the main control rod 4, and the connecting part of the backwashing cylinder 3 and the filter element 2 is provided with the trepanning 301, a piston 5 is movably sleeved in the trepan boring 301, the filter element 2 adopts an entity structure at the connecting section with the machine body 1 and the back washing barrel 3, the connecting section is positioned in the area of water inlet and outlet, the filter element has certain impact force, the filter screen structure is more easy to block or deform, a chute 501 is arranged in the middle of one side of the piston 5 close to the water diversion port 105, a pressure head 6 is movably sleeved in the chute 501, a limit groove 502 is arranged in the middle of the piston 5, the inner end surface of the pressure head 6 is fixedly connected with a loop bar 7 sleeved in the piston 5, bar magnets 10 are symmetrically and fixedly arranged at two sides of the limit groove 502 in the piston 5, a bulge sleeved in the limit groove 502 is fixedly arranged on the middle outer ring of the loop bar 7, a supporting spring 8 is fixedly connected between the pressure head 6 and the inner wall of the chute 501, an electromagnet 9 is fixedly arranged in the center of the main control rod 4 and the high position of the filter element 2, after the electromagnet 9 is electrified, magnetic repulsion force is generated on the bar-shaped magnet 10 and is larger than the water pressure received by the outer side of the piston 5, two sides of the outer end part of the loop bar 7 extend and just correspond to the outer side surface of the ejector block 12, the maximum sliding limiting length inside the limiting groove 502 is equal to the maximum sliding limiting length inside the switch groove 401, after the water pressure impact received by the pressure head 6 is reduced to a certain degree, the serious blocking condition occurs inside the filter element 2, at the moment, the pressure head 6 moves outwards under the action of the supporting spring 8 and drives the loop bar 7 to move, at the moment, the ejector block 12 slides outwards under the action of the reset spring 13 and drives the conductive ball 15 to be connected with the conductive rod 14, at the moment, the circuit is connected with the electromagnet 9 to generate magnetic force and repel with the bar-shaped magnet 10 to drive the bar-shaped magnet 10 to move outwards, the bar-shaped magnet 10 drives the piston 5 to move outwards to the inside the water diversion port 105 to block the water diversion port 105 in the moving process, at the moment, the trepan boring 301 is communicated with the machine body 1 to realize backwashing under the action of water pressure, the middle part of one side of the main control rod 4 close to the piston 5 is fixedly provided with a fixed rod 11 sleeved inside the trepan rod 7, the end surface of one side of the main control rod 4 close to the piston 5 is symmetrically provided with switch grooves 401 at two sides of the trepan rod 7, the inside of the switch groove 401 is movably sleeved with a top block 12, a reset spring 13 is fixedly connected between the top block 12 and the inner wall of the switch groove 401, the inner side surface of the top block 12 is fixedly connected with a conductive ball 15, the inner side wall of the switch Guan Cao is fixedly provided with two conductive rods 14, the distance length between the two conductive rods 14 inside the switch groove 401 is less than the diameter length of the conductive ball 15, the conductive rods 14 between the two switch grooves 401 are linearly connected through a wire, the top block 12 slides in the switch groove 401 in a limiting way, and the maximum limit length is greater than the length of the conductive rods 14, the restriction of the outer side of the top block 12 can be removed after the loop bar 7 moves along with the pressure head 6, so that the top block 12 is driven to slide under the action of the reset spring 13 and the switches of the conductive rods 14 and the conductive balls 15 are triggered, the circuit is conducted, the electromagnet 9 can be electrified to generate magnetic force, meanwhile, the two groups of conductive rods 14 are in a series structure, the situation that the electromagnet 14 can be electrified only when the two conductive balls 15 are completely connected is guaranteed, and the safety is guaranteed due to errors.
According to the working principle, when the water purifier works, water enters the water inlet tank 104 from the water inlet 101, then enters the filter element 2 through the water diversion port 105 to achieve a filtering effect, the filtered water enters the machine body 1, and flows out through the water outlet 102 when the water level reaches the top position, when the filter element 2 is seriously blocked, the water pressure impact on the pressure head 6 is reduced to a certain value, at the moment, the pressure head 6 is pushed outwards under the action of the supporting spring 8 and drives the loop bar 7 to slide together, the loop bar 7 moves while the end part leaves the side surface of the main control rod 4 so as not to be pushed against the outer side of the push block 12, the push block 12 is pushed outwards under the action of the reset spring 13 and drives the conductive ball 15 to move together until the conductive ball 15 contacts the end part of the conductive rod 14, so that the two adjacent conductive rods 14 are electrically conducted, at the moment, electricity is conducted at the end part of the strip-shaped electromagnet 9, the electromagnet repels the magnetic force at the end part of the electromagnet 10 so as to push the piston 5 to slide outwards until the conductive ball 15 enters the water diversion port 105, at the outer side of the back washing layer, at the end, the back washing piston 3, and the electromagnet is automatically discharged from the back to the inside of the back washing cylinder, and finally enters the back to the inside of the back washing cylinder 3, and the back washing process is finished.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides an automatic back flush filter, includes organism (1), its characterized in that: a water inlet (101) is formed in one side of the bottom of the machine body (1), a water outlet (102) is formed in the top of the machine body (1), a drain outlet (103) is formed in the middle of the bottom of the machine body (1), a water inlet groove (104) communicated with the water inlet (101) is formed in the inner wall of one side of the machine body (1), a filter element (2) concentric with the inner cylinder of the machine body (1) is uniformly and fixedly mounted on the inner wall of the machine body (1), a communicated water distribution opening (105) is formed in the position, located between the water inlet groove (104) and the filter element (2), of the inner wall of the machine body (1), a backwashing cylinder (3) is fixedly mounted at the top of the drain outlet (103) in the machine body (1), a main control rod (4) is fixedly mounted in the middle of the backwashing cylinder (3), a sleeve hole (301) is formed in the connecting position of the backwashing cylinder (3) and the filter element (2), a piston (5) is movably sleeved in the sleeve hole (301), the filter element (2) is arranged at different heights, and the filter element (2) is annular;
the middle part of one side, close to a water diversion port (105), of the piston (5) is provided with a sliding groove (501), a pressure head (6) is movably sleeved inside the sliding groove (501), the middle part of the piston (5) is provided with a limiting groove (502), the inner end face of the pressure head (6) is fixedly connected with a loop bar (7) sleeved inside the piston (5), two sides, located inside the limiting groove (502), of the piston (5) are symmetrically and fixedly provided with a bar-shaped magnet (10), the middle outer ring of the loop bar (7) is fixedly provided with a bulge sleeved inside the limiting groove (502), a supporting spring (8) is fixedly connected between the pressure head (6) and the inner wall of the sliding groove (501), the center of a main control rod (4) and the inner part of a filter element (2) are fixedly provided with an electromagnet (9), the middle part, close to one side of the piston (5), of the main control rod (4) is fixedly provided with a fixing rod (11) sleeved inside the loop bar (7), one side end face of the main control rod (4) close to the piston (5) is symmetrically positioned at two side positions of the loop bar (7) and provided with a switch groove (401), the inner side of the fixing spring (401) is connected with a reset block (12), and the inner side of the reset spring (401) is connected with a reset block (401), two conducting rods (14) are fixedly mounted on the inner side wall of the switch groove (401).
2. The automatic backwashing filter of claim 1, wherein: the electromagnet (9) generates magnetic repulsion force to the bar-shaped magnet (10) after being electrified, the magnetic repulsion force is larger than water pressure borne by the outer side of the piston (5), two sides of the outer end portion of the loop bar (7) extend and just correspond to the outer side face of the ejector block (12), and the maximum sliding limiting length inside the limiting groove (502) is equal to the maximum sliding limiting length inside the switch groove (401).
3. The automatic backwashing filter of claim 1, wherein: the distance length between two conducting rods (14) in the switch groove (401) is smaller than the diameter length of the conducting ball (15), the conducting rods (14) between the two switch grooves (401) are linearly connected through conducting wires, the top block (12) slides in the switch groove (401) in a limiting mode, and the maximum limiting length is larger than the length of the conducting rods (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111270169.5A CN113926232B (en) | 2021-10-29 | 2021-10-29 | Automatic back flush filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111270169.5A CN113926232B (en) | 2021-10-29 | 2021-10-29 | Automatic back flush filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113926232A CN113926232A (en) | 2022-01-14 |
| CN113926232B true CN113926232B (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111270169.5A Active CN113926232B (en) | 2021-10-29 | 2021-10-29 | Automatic back flush filter |
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| CN (1) | CN113926232B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315881A (en) * | 1999-06-30 | 2001-10-03 | 帝人株式会社 | Production method for polycarbonate and filter device thereof |
| CN101934165A (en) * | 2010-05-28 | 2011-01-05 | 蔡晓涌 | Solid-liquid separation disc filtering system |
| CN103263797A (en) * | 2013-05-07 | 2013-08-28 | 华南理工大学 | Ceramic water filter with self-cleaning function |
| CN103446791A (en) * | 2013-08-29 | 2013-12-18 | 马彰原 | Integral cartridge healthy-water device |
| CN103977618A (en) * | 2014-05-28 | 2014-08-13 | 北京沃尔德斯水务科技有限公司 | Filter |
| CN108043090A (en) * | 2018-01-19 | 2018-05-18 | 储昭义 | A kind of intermittent feed liquor filter-pressing device of feed liquid slagging-off |
| CN112933697A (en) * | 2021-02-07 | 2021-06-11 | 中国矿业大学 | Automatic backwashing filter and working method |
-
2021
- 2021-10-29 CN CN202111270169.5A patent/CN113926232B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315881A (en) * | 1999-06-30 | 2001-10-03 | 帝人株式会社 | Production method for polycarbonate and filter device thereof |
| CN101934165A (en) * | 2010-05-28 | 2011-01-05 | 蔡晓涌 | Solid-liquid separation disc filtering system |
| CN103263797A (en) * | 2013-05-07 | 2013-08-28 | 华南理工大学 | Ceramic water filter with self-cleaning function |
| CN103446791A (en) * | 2013-08-29 | 2013-12-18 | 马彰原 | Integral cartridge healthy-water device |
| CN103977618A (en) * | 2014-05-28 | 2014-08-13 | 北京沃尔德斯水务科技有限公司 | Filter |
| CN108043090A (en) * | 2018-01-19 | 2018-05-18 | 储昭义 | A kind of intermittent feed liquor filter-pressing device of feed liquid slagging-off |
| CN112933697A (en) * | 2021-02-07 | 2021-06-11 | 中国矿业大学 | Automatic backwashing filter and working method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113926232A (en) | 2022-01-14 |
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Effective date of registration: 20221110 Address after: Area 4, Huangma Industrial Park, Qinbei District, Qinzhou City, Guangxi Zhuang Autonomous Region Applicant after: Guangxi Donglan New Material Co.,Ltd. Address before: 046000 No. 56, Xidi Village, Juting Town, Xiangyuan County, Changzhi City, Shanxi Province Applicant before: Zhao Yulong |
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