CN113926232A - Automatic back flush filter - Google Patents
Automatic back flush filter Download PDFInfo
- Publication number
- CN113926232A CN113926232A CN202111270169.5A CN202111270169A CN113926232A CN 113926232 A CN113926232 A CN 113926232A CN 202111270169 A CN202111270169 A CN 202111270169A CN 113926232 A CN113926232 A CN 113926232A
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- Prior art keywords
- piston
- machine body
- groove
- filter
- main control
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000011001 backwashing Methods 0.000 claims abstract description 27
- 230000000694 effects Effects 0.000 claims 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 5
- 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
- 239000002699 waste material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000006467 substitution reaction 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
- B01D29/11—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, wherein 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, are symmetrically provided with switch grooves at the two sides of the sleeve rod, the filter elements with annular structures are designed, the main control rod, the electromagnets and the like are arranged in the machine body to work in a matching manner, the efficiency of the filter elements is improved, the backwashing quality is improved, and the backwashing times are reduced, and 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:
when the backwashing filter is used, because the vertically-installed filter element structure is used, the water pressure conditions on the top and the bottom of the filter element are greatly different, thus, different filtering strengths can be generated when filtering is carried out, so that the blockage conditions of impurities on different heights of the filter element are different, then, the backwashing filtration is actually only carried out on one section of the filter element, which not only causes high backwashing frequency and water waste, but also causes excessive water flow at the part with less blockage during the backwashing and further causes water waste, meanwhile, the detection of the reduction of the filtering effect is actually partial reduction due to the filtering effect of the vertical filter element, so that the detection is inaccurate, and then the backwashing frequency is increased, thereby not only affecting the filtering effect, but also causing a great deal of water resource waste.
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, a chute is formed in the middle of one side of the piston close to the water diversion port, a pressure head is movably sleeved in the chute, a limiting groove is formed in the middle of the piston, a loop bar sleeved in the piston is fixedly connected to the inner end face of the pressure head, bar-shaped magnets are symmetrically and fixedly mounted on two sides of the limiting groove in the piston, a protrusion sleeved in the limiting groove is fixedly mounted on the outer ring of the middle of the loop bar, a supporting spring is fixedly connected between the pressure head and the inner wall of the chute, an electromagnet is fixedly mounted in the position of the center of the main control bar equal to the filter element, a fixing rod sleeved in the loop bar is fixedly mounted in the middle of the main control bar close to one side of the piston, switch grooves are symmetrically formed in the positions of the end face of one side of the main control bar close to the piston, on two sides of the loop bar, an ejector block is movably sleeved in the switch grooves, and a reset spring is fixedly connected between the ejector block and the inner wall of the switch grooves, the conducting ball is fixedly connected to the inner side face of the ejecting block, and two conducting rods are fixedly mounted on the inner side wall of the switch slot.
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 structure cooperation work such as master control pole inside the organism, compare in prior art, utilize a plurality of annular filter cores at co-altitude, 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, save rate time and water resource, adopt piston structure to slide and can be controlled by the electro-magnet between nozzle 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 basically with water pressure 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 groove; 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 to realize backwashing under the action of water pressure in the machine body 1, a fixed rod 11 sleeved in the trepan boring 7 is fixedly installed in the middle of one side of the main control rod 4 close to the piston 5, switch grooves 401 are symmetrically arranged at the positions of two sides of the trepan boring 7 on the end surface of one side of the main control rod 4 close to the piston 5, a top block 12 is movably sleeved in the switch groove 401, a reset spring 13 is fixedly connected between the top block 12 and the inner wall of the switch groove 401, a conductive ball 15 is fixedly connected with the inner side surface of the top block 12, two conductive rods 14 are fixedly installed on the inner side wall of the switch groove 401, the distance between the two conductive rods 14 in the switch groove 401 is smaller 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, the maximum limiting length is larger than the length of the conductive rod 14, and the limitation on the outer side of the top block 12 can be removed after the trepan 7 moves along with the pressure head 6, thereby drive kicking block 12 to slide and trigger conducting rod 14 and conductive ball 15 switch under reset spring 13 effect, the circuit switches on and can realize that the circular telegram of electro-magnet 9 produces magnetic force, and two sets of conducting rod 14 structures adopt series connection structure simultaneously, have guaranteed like this that only can to switch on when two conductive balls 15 are whole to switch on conducting rod 14 can the circular telegram, have avoided the error to guarantee the security.
The working principle is that water enters the water inlet tank 104 from the water inlet 101 during working, then enters the filter element 2 through the water diversion port 105 to realize the filtering effect, the filtered water enters the machine body 1, and flows out through the water outlet 102 when the water surface height 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 and simultaneously enables the end part to leave the side surface of the main control rod 4 so as not to be pushed against the outer side of the top block 12, the top block 12 is pushed outwards under the action of the reset spring 13 and drives the conductive balls 15 to move together, until the conductive balls 15 contact the end part of the conductive rods 14 to enable the two adjacent conductive rods 14 to be electrically connected, at the moment, the circuit is electrified and generates magnetic force at the end part of the electromagnet 9, the magnetic force and the magnetic force at the end of the bar magnet 10 repel each other to push the piston 5 to slide outwards until the piston enters the water diversion port 105, at the moment, water outside the filter element 2 enters the interior of the filter element through the filter layer and enters the back washing barrel 3 along the sleeve hole 301 and is finally discharged from the discharge port 103, the electromagnet 9 is automatically disconnected after being electrified for a period of time, and the piston 5 is pushed back to the original position under the action of water pressure, so that the back washing process is completed.
It is noted that, herein, relational terms such as first and second, and the like may be 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 (4)
1. The utility model provides an automatic back flush filter, includes organism (1), its characterized in that: a water inlet (101) is arranged on one side of the bottom of the machine body (1), a water outlet (102) is arranged on the top of the machine body (1), the middle of the bottom of the machine body (1) is provided with a drain outlet (103), the inner wall of one side of the machine body (1) is provided with a water inlet groove (104) communicated with the water inlet (101), the inner wall of the machine body (1) is uniformly and fixedly provided with a filter element (2) concentric with the inner cylinder of the machine body (1), a water diversion port (105) communicated with the water inlet groove (104) and the filter element (2) is arranged on the inner wall of the machine body (1), a back washing barrel (3) is fixedly arranged at the top of the drain outlet (103) in the machine body (1), the middle part of the backflushing barrel (3) is fixedly provided with a main control rod (4), the joint of the backflushing barrel (3) and the filter element (2) is provided with a trepanning hole (301), and a piston (5) is movably sleeved in the trepanning hole (301).
2. The automatic backwashing filter of claim 1, wherein: the middle part of one side, close to the water diversion port (105), of the piston (5) is provided with a sliding groove (501), a pressure head (6) is movably sleeved in 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 in the piston (5), bar-shaped magnets (10) are symmetrically and fixedly installed on two sides, located in the limiting groove (502), of the piston (5), the middle outer ring of the loop bar (7) is fixedly installed with a bulge sleeved in 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), an electromagnet (9) is fixedly installed inside the positions, such as the center of the main control rod (4) and the filter element (2), the middle part, close to one side of the piston (5), of the main control rod (4) is fixedly installed with a fixing rod (11) sleeved in the loop bar (7), the utility model discloses a switch slot, including piston (5), guide rod (4), kicking block (12), fixedly connected with reset spring (13) between kicking block (12) and switch slot (401) inner wall, leading pole (4) are close to piston (5) a side end face and are located loop bar (7) both sides position symmetry and have seted up switch slot (401), kicking block (12) inside activity has been cup jointed, kicking block (12) medial surface fixedly connected with conductive ball (15), switch slot (401) inside wall fixed mounting has two conducting rod (14).
3. The automatic backwashing filter of claim 2, 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 applied to 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).
4. The automatic backwashing filter of claim 2, 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 true CN113926232A (en) | 2022-01-14 |
| CN113926232B CN113926232B (en) | 2022-11-29 |
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Family Applications (1)
| 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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| Country | Link |
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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 |
|---|---|
| CN113926232B (en) | 2022-11-29 |
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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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