CN114522459B - Sundry separating device for water treatment - Google Patents
Sundry separating device for water treatment Download PDFInfo
- Publication number
- CN114522459B CN114522459B CN202210435292.6A CN202210435292A CN114522459B CN 114522459 B CN114522459 B CN 114522459B CN 202210435292 A CN202210435292 A CN 202210435292A CN 114522459 B CN114522459 B CN 114522459B
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- water
- cavity
- filter
- water treatment
- plate
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000012535 impurity Substances 0.000 claims abstract description 21
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 230000005484 gravity Effects 0.000 claims description 25
- 238000004140 cleaning Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims 2
- 238000000605 extraction Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 239000010865 sewage Substances 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 5
- 238000007667 floating Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition 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
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
- B01D29/6415—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a rotary movement with respect to the filtering element
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to the technical field of sewage treatment, and provides a sundry separating device for water treatment, which comprises a pipeline body and further comprises: the top surface of the filter cavity is provided with a plurality of filter holes, an interception plate is arranged above the filter cavity, and a water discharge pipe is arranged on the interception plate; the impurity collecting cavity is positioned on one side of the filtering cavity, and the impurity collecting cavity and the filtering cavity are both positioned in the pipeline body; and the brush plate is fixedly arranged on the rotating shaft, the side surface of the rotating shaft is connected with a rotating blade, the bottom of the filter cavity is provided with a water drainage pipe, the side surface of the water drainage pipe is provided with a water spray head, and water sprayed by the water spray head is aligned to the rotating blade and enables the rotating blade to rotate. Through the arrangement of the filter cavity, the sundries collecting cavity, the brush plate, the rotating shaft, the rotating blade and the water spraying head, the sundries can be automatically separated and cleaned without power components, and the water spraying device is convenient to use and energy-saving.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sundry separating device for water treatment.
Background
In the daily production activity of the bio-industry, a large amount of sewage can be produced, the sewage needs to be treated, the sundries in the sewage need to be separated in basic steps, the sundries are generally filtered and separated through a filter screen cover in the prior art, in order to avoid the situation that the filter screen cover is blocked by the sundries, the sundries garbage covering the filter screen cover needs to be removed at regular time, at present, a motor can be used for driving a cleaning device to remove the sundries on the filter screen cover, and the motor drive needs to consume more energy, so that the energy is not saved enough. Therefore, it is necessary to provide a device for separating impurities for water treatment, which aims to solve the above problems.
Disclosure of Invention
The invention aims to provide a sundries separating device for water treatment, which aims to solve the problems in the background technology.
In order to achieve the above object, the present invention provides the following technical solution, wherein the impurity separating device for water treatment comprises a pipeline body, and the impurity separating device for water treatment further comprises:
the filter chamber is used for filtering sundries in water, a plurality of filter holes are formed in the top surface of the filter chamber, an interception plate is arranged above the filter chamber, a water discharge pipe is mounted on the interception plate, and the water discharge pipe is located right above the filter chamber;
the impurity collecting cavity is positioned on one side of the filtering cavity, and the impurity collecting cavity and the filtering cavity are both positioned in the pipeline body;
and a brush plate used for cleaning the top surface of the filter cavity, a rotating shaft is arranged between the sundries collecting cavity and the filter cavity, the brush plate is fixedly installed on the rotating shaft, a rotating blade is connected to the side surface of the rotating shaft, a drain pipe is installed at the bottom of the filter cavity, a water spraying head is installed on the side surface of the drain pipe, and water sprayed from the water spraying head aligns to the rotating blade and enables the rotating blade to rotate.
As a further aspect of the present invention, the impurity separating device for water treatment further includes:
the gravity block is used for temporarily blocking the drain pipe so as to ensure that water sprayed by the water spraying head has certain impact force, and the outer side surface of the gravity block can be in sliding fit connection with the inner side surface of the drain pipe;
the filter cavity is internally provided with a floating plate used for driving the gravity block, the floating plate is connected with the gravity block through a rope, the side surface of the floating plate is connected with a limiting block, the inner side surface of the filter cavity is provided with a guide groove, the limiting block is connected with the guide groove in a sliding fit manner, and a limiting column used for limiting the gravity block is arranged in the filter cavity;
the electromagnet is used for temporarily fixing the buoyancy plate, the electromagnet and the pressure sensor are installed at the upper end of the guide groove, the electromagnetic valve is installed in the drain pipe, when the buoyancy plate is located at the top, the gravity block is separated from the drain pipe, the limiting block is in contact with the pressure sensor, the electromagnet is powered on, the electromagnetic valve is closed, the limiting block is made of ferromagnetic materials, and the limiting block can be an iron block.
As a further scheme of the invention, the sundries separating device for water treatment further comprises a controller and a time relay, wherein the pressure sensor, the electromagnet, the electromagnetic valve and the time relay are all electrically connected with the controller, and the time relay is used for controlling the power-on time of the electromagnet and the closing time of the electromagnetic valve.
As a further scheme of the invention, a plurality of hole cleaning needles are fixedly mounted on the top surface of the buoyancy plate, the hole cleaning needles correspond to the filter holes one by one, and when the buoyancy plate is positioned at the uppermost end, the upper ends of the hole cleaning needles are flush with the upper surface of the filter cavity.
As a further aspect of the present invention, the rotating shaft is mounted on a mounting bracket, and the mounting bracket is fixedly connected to an inner side surface of the pipe body.
As a further scheme of the invention, a sundries taking-out door is arranged on the outer side surface of the sundries collecting cavity.
As a further scheme of the invention, the sprinkler head is provided with a plurality of sprinkler heads, the rotating blades are also provided with a plurality of rows, and the rotating blades in each row are distributed in a circumferential array around the central line of the rotating shaft.
In conclusion, the beneficial effects of the invention are as follows:
through the arrangement of the filter cavity, the sundries collecting cavity, the brush plate, the rotating shaft, the rotating blade and the water spraying head, the sundries can be automatically separated and cleaned without power-driven components, and the water spraying device is convenient to use and energy-saving. When the water-spraying cleaning device is used, water flow sequentially passes through the water drain pipe, the water draining pipe and the water spraying head, the water flow is sprayed onto the rotating blades, the rotating blades are opened under the action of water flow impact to rotate, the rotating shaft rotates along with the rotating shaft and drives the brushing plate to rotate, and then the brushing plate rotates to clean sundries on the surface of the filter cavity into the sundry collecting cavity.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic diagram of an internal structure of a sundries separating device for water treatment according to an embodiment of the invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a partially enlarged schematic view of a portion B in fig. 2.
Fig. 4 is a top view of a filtering chamber and a sundries collecting chamber in the sundries separating device for water treatment according to the embodiment of the invention.
Fig. 5 is a diagram illustrating a positional relationship between a sprinkler head and a rotor blade in the impurity separating device for water treatment according to the embodiment of the present invention.
Reference numerals: 1-pipeline body, 2-interception plate, 3-water drain pipe, 4-filtering cavity, 5-sundry collecting cavity, 6-sundry taking-out door, 7-mounting rack, 8-rotating shaft, 9-rotating blade, 10-water drain pipe, 11-water spray head, 12-buoyancy plate, 13-rope, 14-gravity block, 15-brush plate, 16-filtering hole, 17-hole cleaning needle, 18-limiting block, 19-guide groove, 20-limiting column, 21-pressure sensor, 22-electromagnet, 23-through hole, 24-partition plate and 31-electromagnetic valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
Referring to fig. 1, 2 and 4, an embodiment of the present invention provides a sundries separating device for water treatment, including a pipe body 1, and the sundries separating device for water treatment further includes:
the filter chamber 4 is used for filtering impurities in water, a plurality of filter holes 16 are formed in the top surface of the filter chamber 4, an interception plate 2 is arranged above the filter chamber 4, a water discharge pipe 3 is mounted on the interception plate 2, and the water discharge pipe 3 is located right above the filter chamber 4;
the impurity collecting cavity 5 is used for collecting impurities, the impurity collecting cavity 5 is positioned at one side of the filtering cavity 4, and the impurity collecting cavity 5 and the filtering cavity 4 are both positioned in the pipeline body 1;
and a brush plate 15 for cleaning the top surface of the filter chamber 4, a rotating shaft 8 is arranged between the sundries collecting chamber 5 and the filter chamber 4, the brush plate 15 is fixedly arranged on the rotating shaft 8, a rotating blade 9 is connected to the side surface of the rotating shaft 8, a drain pipe 10 is arranged at the bottom of the filter chamber 4, a sprinkler head 11 is arranged on the side surface of the drain pipe 10, and water sprayed from the sprinkler head 11 is aligned to the rotating blade 9 and enables the rotating blade 9 to rotate.
In the embodiment of the invention, the pipeline body 1 is vertically arranged, the outer side surface of the interception plate 2 is fixedly connected with the inner side surface of the pipeline body 1, the rotating shaft 8 is vertically arranged, the brush plate 15 is fixedly arranged at the upper end of the rotating shaft 8, the rotating blade 9 is fixedly arranged at the lower end of the rotating shaft 8, the sundries collecting cavity 5 is separated from the filtering cavity 4 by the separating plate 24, a through hole 23 is arranged between the sundries collecting cavity 5 and the filtering cavity 4, the upper end of the filtering cavity 4 is not lower than the upper end of the sundries collecting cavity 5, the top surface of the sundries collecting cavity 5 is not arranged, the rotating shaft 8 passes through the through hole 23, the lower end of the drain pipe 10 is sealed, when in use, water flows sequentially pass through the drain pipe 3, the drain pipe 10 and the water spray head 11, the water flows are sprayed onto the rotating blade 9, the rotating blade 9 starts to rotate under the action of water impact, the rotating shaft 8 rotates along with the brush plate 15, and the brush plate 15 rotates to clean the sundries on the surface of the filter cavity 4 into the sundries collecting cavity 5.
Referring to fig. 1, 2 and 3, in an embodiment of the present invention, the impurity separating apparatus for water treatment further includes:
the gravity block 14 is used for temporarily blocking the drain pipe 10 so as to ensure that water sprayed from the water spraying head 11 has certain impact force, and the outer side surface of the gravity block 14 can be in sliding fit connection with the inner side surface of the drain pipe 10;
the filter chamber is characterized by comprising a buoyancy plate 12 used for driving a gravity block 14, wherein the buoyancy plate 12 is connected with the gravity block 14 through a rope 13, the side surface of the buoyancy plate 12 is connected with a limiting block 18, the inner side surface of the filter chamber 4 is provided with a guide groove 19, the limiting block 18 is connected with the guide groove 19 in a sliding fit manner, and a limiting column 20 used for limiting the gravity block 14 is installed in the filter chamber 4;
the electromagnet 22 is used for temporarily fixing the buoyancy plate 12, the electromagnet 22 and the pressure sensor 21 are installed at the upper end of the guide groove 19, the electromagnetic valve 31 is installed in the drain pipe 3, when the buoyancy plate 12 is located at the uppermost end, the gravity blocking piece 14 is separated from the drain pipe 10, the limiting block 18 is in contact with the pressure sensor 21, the electromagnet 22 is electrified, the electromagnetic valve 31 is closed, and the limiting block 18 is made of ferromagnetic materials.
In the embodiment of the invention, the sundries separating device for water treatment further comprises a controller and a time relay, the pressure sensor 21, the electromagnet 22, the electromagnetic valve 31 and the time relay are all electrically connected with the controller, the time relay is used for controlling the power-on time of the electromagnet 22 and the closing time of the electromagnetic valve 31, the density of the buoyancy plate 12 is smaller than that of water, the number of the limiting blocks 18 and the number of the guide grooves 19 are at least two, so that the buoyancy plate 12 can be ensured to be kept in a horizontal state in the movement process, the surface of the buoyancy plate 12 is provided with a plurality of through holes, the bottom surface of the filter cavity 4 is fixedly provided with a plurality of limiting columns 20, when the gravity block 14 is separated from the drain pipe 10, the gravity block 14 is positioned among the limiting columns 20, when the device is just used, the buoyancy plate 12 is positioned at the lower end, the gravity block 14 is positioned in the drain pipe 10, along with rivers constantly gush into filter chamber 4, buoyancy board 12 slowly rises, until buoyancy board 12 rises to the top, gravity sprue 14 breaks away from drain pipe 10, and stopper 18 and pressure sensor 21 contact, the controller makes electro-magnet 22 circular telegram and solenoid valve 31 close, electro-magnet 22 attracts stopper 18, buoyancy board 12 keeps motionless at the top, more water in filter chamber 4 passes through sprinkler head 11 blowout this moment, can cause great impact force to rotor blade 9, guaranteed the smooth rotation of axis of rotation 8, because the effect of time relay, one end time later, rivers in filter chamber 4 have been accomplished, the controller makes electro-magnet 22 circular telegram and solenoid valve 31 open, gravity sprue 14 descends and blocks up drain pipe 10, with this reciprocating cycle.
Referring to fig. 1, 2 and 3, in an embodiment of the present invention, a plurality of hole cleaning needles 17 are fixedly installed on the top surface of the buoyancy plate 12, the hole cleaning needles 17 correspond to the filter holes 16 one by one, and when the buoyancy plate 12 is located at the uppermost end, the upper ends of the hole cleaning needles 17 are flush with the upper surface of the filter cavity 4.
In the embodiment of the invention, the hole cleaning needle 17 is arranged, so that the filter holes 16 can be automatically cleaned once when the floating plate 12 rises to the uppermost end, and the filter holes 16 can be effectively prevented from being blocked.
Referring to fig. 1 to 5, in an embodiment of the present invention, the rotating shaft 8 is mounted on a mounting bracket 7, the mounting bracket 7 is fixedly connected to an inner side surface of the pipe body 1, a bearing is mounted on the mounting bracket 7, and an inner hole of the bearing is fixedly connected to the rotating shaft 8. And a sundry taking-out door 6 is arranged on the outer side surface of the sundry collecting cavity 5.
The number of the sprinkler heads 11 is plural, the plurality of the rotating blades 9 are also provided with a plurality of rows, and the plurality of the rotating blades 9 in each row are distributed in a circumferential array around the center line of the rotating shaft 8. Through the arrangement of the plurality of sprinkler heads 11 and the rotor blade 9, the smooth rotation of the rotation shaft 8 can be ensured.
The working process of the embodiment of the invention is as follows: when the filter is just used, the buoyancy plate 12 is located at the lower end, the gravity block 14 is located in the drain pipe 10, along with the continuous inflow of water into the filter cavity 4, the buoyancy plate 12 slowly rises until the buoyancy plate 12 rises to the uppermost end, the gravity block 14 is separated from the drain pipe 10, the limit block 18 is in contact with the pressure sensor 21, the controller enables the electromagnet 22 to be electrified and the electromagnetic valve 31 to be closed, the electromagnet 22 attracts the limit block 18, the buoyancy plate 12 is kept immovable at the uppermost end, more water in the filter cavity 4 is sprayed out through the water spray head 11 at the moment, larger impact force can be caused on the rotary blade 9, the smooth rotation of the rotary shaft 8 is guaranteed, the brush plate 15 is further guaranteed to rotate, and the brush plate 15 cleans sundries on the surface of the filter cavity 4 into the sundries collecting cavity 5.
Although several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in other various ways, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a debris separator for water treatment, includes the pipeline body, its characterized in that, debris separator for water treatment still includes:
the filter chamber is used for filtering sundries in water, a plurality of filter holes are formed in the top surface of the filter chamber, an interception plate is arranged above the filter chamber, a water discharge pipe is mounted on the interception plate, and the water discharge pipe is located right above the filter chamber;
the impurity collecting cavity is positioned on one side of the filtering cavity, and the impurity collecting cavity and the filtering cavity are both positioned in the pipeline body;
the washing device comprises a filtering cavity, a sundries collecting cavity, a rotating shaft, a brush plate, a water spraying head and a washing brush, wherein the top surface of the filtering cavity is cleaned by the brush plate;
the sundries separating device for water treatment further comprises:
the gravity block is used for temporarily blocking the drain pipe so as to ensure that water sprayed by the water spraying head has certain impact force, and the outer side surface of the gravity block can be in sliding fit connection with the inner side surface of the drain pipe;
the filter cavity is internally provided with a plurality of limiting columns for limiting the gravity plugging block, and when the gravity plugging block is separated from the drain pipe, the gravity plugging block is positioned among the plurality of limiting columns; the top surface of the buoyancy plate is fixedly provided with a plurality of hole cleaning needles, the hole cleaning needles correspond to the filter holes one by one, and when the buoyancy plate is positioned at the uppermost end, the upper ends of the hole cleaning needles are flush with the upper surface of the filter cavity;
the electromagnet is used for temporarily fixing the buoyancy plate, the electromagnet and the pressure sensor are installed at the upper end of the guide groove, the electromagnetic valve is installed in the drain pipe, when the buoyancy plate is located at the top, the gravity block is separated from the drain pipe, the limiting block is in contact with the pressure sensor, the electromagnet is electrified, the electromagnetic valve is closed, and the limiting block is made of ferromagnetic materials.
2. The sundry separating device for water treatment as claimed in claim 1, further comprising a controller and a time relay, wherein the pressure sensor, the electromagnet, the electromagnetic valve and the time relay are all electrically connected with the controller, and the time relay is used for controlling the power-on time of the electromagnet and the closing time of the electromagnetic valve.
3. A sundry separating device for water treatment as claimed in claim 1, wherein the rotating shaft is mounted on a mounting bracket, and the mounting bracket is fixedly connected with the inner side surface of the pipeline body.
4. A impurities separation device for water treatment according to claim 1, characterized in that an impurities extraction door is provided on the outer side of the impurities collection chamber.
5. A impurities separator for water treatment according to claim 1, wherein the water jet head is provided with a plurality of rows of rotating blades, and the rotating blades in each row are distributed in a circumferential array about the center line of the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210435292.6A CN114522459B (en) | 2022-04-24 | 2022-04-24 | Sundry separating device for water treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210435292.6A CN114522459B (en) | 2022-04-24 | 2022-04-24 | Sundry separating device for water treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114522459A CN114522459A (en) | 2022-05-24 |
| CN114522459B true CN114522459B (en) | 2022-08-02 |
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ID=81627921
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210435292.6A Active CN114522459B (en) | 2022-04-24 | 2022-04-24 | Sundry separating device for water treatment |
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| CN (1) | CN114522459B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2892242Y (en) * | 2006-05-12 | 2007-04-25 | 张珉 | Water flitering device with automatic washing filtering core |
| CN209653028U (en) * | 2019-01-18 | 2019-11-19 | 杭州伟永建筑工程有限公司 | A kind of hydraulic engineering environment-friendly type rain collector |
| CN109985480A (en) * | 2019-04-24 | 2019-07-09 | 杭州余杭振华日化玻璃有限公司 | Exhaust treatment system |
| CN209971492U (en) * | 2019-05-24 | 2020-01-21 | 鄂尔多斯市恒丰节水工程技术有限公司 | Stable form vacuum sizing water tank is used in PVC pipe production |
| CN213032031U (en) * | 2020-08-11 | 2021-04-23 | 远大(湖南)再生燃油股份有限公司 | Feeding device for dehydration tower |
| CN214658334U (en) * | 2021-04-01 | 2021-11-09 | 浩祥(福建)建设有限公司 | Drainage system for house building engineering |
| CN214861787U (en) * | 2021-05-14 | 2021-11-26 | 广东润威建设工程有限公司 | River course sewage treatment is with reposition of redundant personnel filter equipment |
| CN215406287U (en) * | 2021-07-27 | 2022-01-04 | 上海浅行生态园林发展有限公司 | Rainwater collection device with filtering capability |
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- 2022-04-24 CN CN202210435292.6A patent/CN114522459B/en active Active
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