CN114506902B - Water softening device for sewage treatment - Google Patents
Water softening device for sewage treatment Download PDFInfo
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- CN114506902B CN114506902B CN202210411371.3A CN202210411371A CN114506902B CN 114506902 B CN114506902 B CN 114506902B CN 202210411371 A CN202210411371 A CN 202210411371A CN 114506902 B CN114506902 B CN 114506902B
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- fixed
- bin
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- exchange resin
- cation exchange
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention discloses a water softening device for sewage treatment, and relates to the technical field of sewage treatment. This a water softening installation for sewage treatment, including the reaction storehouse, the right side in reaction storehouse is fixed with the replacement device, the outer wall middle-end of knob pole is fixed with the fixed block, the front end of fixed block is fixed with hollow rod, the outer wall of hollow rod rotates through four connecting rods and is connected with four cation exchange resin boards. This a water softening installation for sewage treatment rotates through knob pole control fixed block, makes four cation exchange resin board displacements to the reaction bin in wherein sewage contact, meanwhile, drives four cation exchange resin board pivoted in-process at the fixed block, extrudees half spherical gasbag through the arc pole, makes four ejector pins drive four cation exchange resin boards simultaneously and rotates, makes four cation exchange resin boards expand, and then increases the area of contact with sewage, promotes the replacement effect.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a water softening device for sewage treatment.
Background
The hardness of water refers to the content of salt substances dissolved in water, namely the content of calcium salt and magnesium salt. The hardness of the water is high when the content is large, and the hardness of the water is low when the content is small, so that the hardness of the water can be controlled and reduced by common urban water plants, and the hardness of the treated tap water can be controlled to be 8-14GPG by common urban water plants.
In the sewage treatment process, the softening operation to the water body generally can adopt single cation exchange resin board to carry out the replacement operation of calcium magnesium ion to the water body to reach the softened water body effect, and single cation exchange resin board single structure, the area of contact with the water body is less, leads to the replacement effect not good, influences the replacement effect.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a water body softening device for sewage treatment, which solves the problems in the background technology. In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a water softening installation for sewage treatment, includes the reaction storehouse, the bottom in reaction storehouse is fixed with the discharge pipe way through valve control, the right side in reaction storehouse is fixed with the replacement device, the replacement device includes the support, the upper end of support is run through and is rotated and be connected with the knob pole, the outer wall middle-end of knob pole is fixed with the fixed block, the front end of fixed block is fixed with hollow rod, hollow rod's outer wall rotates through four connecting rods and is connected with four cation exchange resin boards, hollow rod's front end is fixed with the hemisphere gasbag, hollow rod's outer wall middle-end is fixed with four rectangle poles, four there is the ejector pin inside of rectangle pole all runs through and sliding connection, be fixed with the arc pole on the inner wall in reaction storehouse.
Preferably, a protection plate is fixed on the cation exchange resin plate, the protection plate is fixed on five surfaces of the cation exchange resin plate close to the hollow rod, and one surface of the protection plate close to the hollow rod is connected with the ejector rod in a sliding mode.
Preferably, the hemisphere gasbag and hollow rod intercommunication, four the one end and the hollow rod intercommunication of ejector pin are kept away from to the rectangle pole.
Preferably, the backplate upper end in reaction storehouse is provided with cleaning device, cleaning device is including collecting storehouse, cam, atmospheric pressure storehouse, collect storehouse sliding connection in the upper end in reaction storehouse, the cam rotates the outside of connecting in reaction storehouse, the atmospheric pressure storehouse is fixed on the outer wall in reaction storehouse, collect the embedded intrinsic motor of lateral wall in storehouse one, the front end output shaft department of motor one is fixed with the scraper blade, the inside lower extreme sliding connection in atmospheric pressure storehouse has atmospheric pressure pole one, the bottom of atmospheric pressure pole one is fixed with the arc, the equal sliding connection in other both ends in atmospheric pressure storehouse has atmospheric pressure pole two, two atmospheric pressure pole two all with collect the storehouse fixed, be provided with extrusion device in the collection storehouse.
Preferably, the extrusion device comprises an extrusion plate and a guide wheel, the extrusion plate is slidably connected to the middle end in the collection bin, a thread rope is fixed to the front end of the extrusion plate, and the guide wheel is rotatably connected to the outside of the collection bin through a connecting block.
Preferably, the bottom of the arc plate is provided with an arc groove matched with the cam, a first elastic sheet is arranged between the bottom of the collecting bin and the inner wall of the reaction bin, and an arc baffle is fixed on the upper surface of the collecting bin.
Preferably, one end of the cord is fixed on the extrusion plate, the other end of the cord penetrates through the collection bin and is fixed with the inner wall of the reaction bin through the guide wheel, and two elastic pieces II are arranged between the front end of the extrusion plate and the collection bin.
Preferably, the inside in reaction storehouse is provided with agitating unit, agitating unit includes motor two, the axis of rotation department of motor two is fixed with the swing arm, the outside annular array of swing arm is fixed with four stirring boards.
Preferably, one end of the stirring plate, which is far away from the rotating rod, is provided with a groove, the top end of the groove is fixedly provided with an elastic guide plate, the inside of the groove is rotatably connected with a wave-shaped guide plate, and one end of the wave-shaped guide plate, which is close to the elastic guide plate, is fixedly provided with an impact ball.
Preferably, the flow guide direction of the elastic flow guide plate is not consistent with the flow guide direction of the stirring plate.
The invention provides a water softening device for sewage treatment. The method has the following beneficial effects:
(1) this a water softening installation for sewage treatment, for the water softening operation that realizes sewage, carry out the water through calcium magnesium ion replacement's mode and soften, rotate through knob pole control fixed block, make four cation exchange resin boards displacement to the reaction chamber in wherein sewage contact, meanwhile, drive four cation exchange resin board pivoted in-process at the fixed block, extrude hemisphere gasbag through the arc pole, make four ejector pins drive four cation exchange resin boards simultaneously and rotate, make four cation exchange resin boards expand, and then increase the area of contact with sewage, promote the replacement effect.
(2) This a water softening installation for sewage treatment, come to clear up four cation exchange resin boards through setting up cleaning device, through rotating the cam, make cam extrusion arc, thereby control air pressure bar one upwards moves, two air pressure bar two promote the collection storehouse and remove this moment, make the below of collecting the storehouse displacement to four cation exchange resin boards, starting motor one this moment, make the scraper blade rotate, with four cation exchange resin boards on adnexed magnesium, calcific combined attachment is clear away, do not have the attachment to remain in order to guarantee the surface of four cation exchange resin boards, the replacement effect is better when making follow-up replacement operation.
(3) This a water softening installation for sewage treatment, through setting up extrusion device and push and stay magnesium, calcium compound inside the collection storehouse after the clearance, smash magnesium, calcium compound extrusion, can promote the collection quantity in collection storehouse, also can reduce magnesium, calcium compound and adhere to on the inner wall in collection storehouse simultaneously.
(4) This a water softening installation for sewage treatment, through setting up agitating unit and make sewage roll in the reaction bin, promote sewage and cation exchange resin plate's area of contact, rotate through two control screw rods of motor, make four stirring boards rotate on the screw rod, thereby make sewage roll in the reaction bin, meanwhile, all be provided with elastic guide plate on every stirring board, and elastic guide plate's water conservancy diversion direction is inconsistent with the water conservancy diversion direction of stirring board, promote the water conservancy diversion effect to sewage, further promote the roll effect of sewage.
Drawings
FIG. 1 is a schematic diagram of the overall three-dimensional structure of the present invention;
FIG. 2 is a schematic three-dimensional view of a displacement apparatus according to the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;
FIG. 4 is a schematic three-dimensional structure of the cleaning device of the present invention;
FIG. 5 is a schematic three-dimensional view of the extrusion apparatus of the present invention;
FIG. 6 is a schematic three-dimensional structure of the stirring device of the present invention;
FIG. 7 is a three-dimensional schematic view of the stirring plate and its internal structure according to the present invention.
In the figure: 1. a reaction bin; 2. a discharge conduit; 3. a displacement device; 31. a support; 32. a knob stem; 33. a fixed block; 34. a hollow shaft; 35. a connecting rod; 36. a cation exchange resin plate; 37. a hemispherical air bag; 38. a rectangular bar; 39. a top rod; 4. a cleaning device; 41. a collecting bin; 42. a cam; 43. an air pressure bin; 44. a first motor; 45. a squeegee; 46. a second pressure lever; 47. a first air pressure rod; 48. an arc-shaped plate; 49. an extrusion device; 491. a pressing plate; 492. a guide wheel; 493. a cord; 5. a stirring device; 51. a second motor; 52. rotating the rod; 53. a stirring plate; 531. an elastic deflector; 532. wave-shaped guide plate.
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.
Referring to fig. 1-7, the present invention provides a technical solution: a water softening device for sewage treatment comprises a reaction bin 1, a discharge pipeline 2 controlled by a valve is fixed at the bottom of the reaction bin 1, a displacement device 3 is fixed at the right side of the reaction bin 1, the displacement device 3 comprises a support 31, the upper end of the support 31 is connected with a knob rod 32 in a penetrating and rotating manner, a fixed block 33 is fixed at the middle end of the outer wall of the knob rod 32, a hollow rod 34 is fixed at the front end of the fixed block 33, the outer wall of the hollow rod 34 is connected with four cation exchange resin plates 36 in a rotating manner through four connecting rods 35, a hemispherical air bag 37 is fixed at the front end of the hollow rod 34, four rectangular rods 38 are fixed at the middle end of the outer wall of the hollow rod 34, the hemispherical air bag 37 is communicated with the hollow rod 34, one ends of the four rectangular rods 38 far away from an ejector rod 39 are communicated with the hollow rod 34, ejector rods 39 are connected inside the four rectangular rods 38 in a penetrating and sliding manner, an arc-shaped rod is fixed on the inner wall of the reaction bin 1, a protective plate is fixed on the cation exchange resin plate 36, the protective plate is fixed on five surfaces of the cation exchange resin plate 36 close to the hollow rod 34, and one surface of the protective plate close to the hollow rod 34 is connected with the push rod 39 in a sliding way. This a water softening installation for sewage treatment, for the water softening operation that realizes sewage, carry out the water softening through the mode of calcium magnesium ion replacement, rotate through knob pole 32 control fixed block 33, make four cation exchange resin boards 36 displacement to reaction chamber 1 in, meanwhile, drive four cation exchange resin boards 36 pivoted in-process at fixed block 33, extrude hemisphere gasbag 37 through the arc pole, make four ejector pins 39 drive four cation exchange resin boards 36 simultaneously and rotate, make four cation exchange resin boards 36 expand, and then increase the area of contact with sewage, promote the replacement effect.
Further, a cleaning device 4 is arranged at the upper end of the back plate of the reaction bin 1, the cleaning device 4 comprises a collection bin 41, a cam 42 and an air pressure bin 43, the collection bin 41 is slidably connected to the upper end of the reaction bin 1, a first elastic sheet is arranged between the bottom of the collection bin 41 and the inner wall of the reaction bin 1, after the collection bin 41 is pushed to move, the first elastic sheet is extruded, then when the collection bin 41 does not have external force, the collection bin 41 is driven to reset under the action of resilience force of the first elastic sheet, an arc-shaped baffle is fixed on the upper surface of the collection bin 41, the arc-shaped baffle is arranged to reduce splashing generated in the cleaning process, the cam 42 is rotatably connected to the outside of the reaction bin 1, the air pressure bin 43 is embedded and fixed on the outer wall of the reaction bin 1, a first motor 44 is fixed on the side wall of the collection bin 41, a scraper 45 is fixed at the front end output shaft of the first motor 44, a first air pressure rod 47 is slidably connected to the lower end inside of the air pressure bin 43, an arc-shaped plate 48 is fixed at the bottom of the first air pressure rod 47, an arc-shaped groove matched with the cam 42 is formed in the bottom of the arc-shaped plate 48, two air pressure rods 46 are connected to the other two ends of the air pressure bin 43 in a sliding mode, the two air pressure rods 46 are fixed with the collecting bin 41, and an extruding device 49 is arranged in the collecting bin 41. The four cation exchange resin plates 36 are cleaned by arranging the cleaning device 4, the cam 42 is made to extrude the arc-shaped plate 48 by rotating the cam 42, so that the first air pressure rod 47 is controlled to move upwards, the second air pressure rod 46 pushes the collection bin 41 to move at the moment, the initial state of the collection bin 41 is positioned below the right sides of the four cation exchange resin plates 36, the collection bin 41 is made to move to the lower parts of the four cation exchange resin plates 36 along with the pushing of the collection bin 41, the first motor 44 is started to enable the scraper 45 to rotate, magnesium and calcium adhered to the four cation exchange resin plates 36 are removed, no adhesive residue is left on the surfaces of the four cation exchange resin plates 36, and the replacement effect is better during subsequent replacement operation.
Furthermore, the squeezing device 49 comprises a squeezing plate 491 and a guide wheel 492, the squeezing plate 491 is slidably connected to the inner middle end of the collecting bin 41, a cord 493 is fixed to the front end of the squeezing plate 491, the guide wheel 492 is rotatably connected to the outer portion of the collecting bin 41 through a connecting block, one end of the cord 493 is fixed to the squeezing plate 491, the other end of the cord 493 penetrates through the collecting bin 41 and is fixed to the inner wall of the reaction bin 1 through the guide wheel 492, and two elastic sheets two are arranged between the front end of the squeezing plate 491 and the collecting bin 41. Magnesium and calcium compounds left in the collecting bin 41 after being extruded and cleaned by the extruding device 49 are extruded and crushed, the collecting quantity of the collecting bin 41 can be increased, and the magnesium and calcium compounds can be reduced to be attached to the inner wall of the collecting bin 41.
It is worth noting, the inside of reaction bin 1 is provided with agitating unit 5, agitating unit 5 includes motor two 51, the axis of rotation department of motor two 51 is fixed with the swing arm 52, the outside annular array of swing arm 52 is fixed with four stirring boards 53, the one end that the swing arm 52 was kept away from to stirring board 53 is seted up flutedly, the top of recess is fixed with elastic guide plate 531, and the inside of recess rotates and is connected with wave guide plate 532, elastic guide plate 531's water conservancy diversion direction is inconsistent with stirring board 53's water conservancy diversion direction, the one end that wave guide plate 532 is close to elastic guide plate 531 is fixed with the striking ball. Make sewage roll in the reaction bin 1 through setting up agitating unit 5, promote sewage and the area of contact of cation exchange resin board 36, rotate through two 51 control jibs 52 of motor, make four stirring boards 53 rotate on the jibs 52, thereby make sewage roll in the reaction bin 1, meanwhile, all be provided with elastic guide plate 531 on every stirring board 53, and elastic guide plate 531's water conservancy diversion direction is inconsistent with the water conservancy diversion direction of stirring board 53, promote the water conservancy diversion effect to sewage, further promote the roll effect of sewage.
When the device is used, firstly, sewage to be softened is sent into the reaction bin 1, then the knob rod 32 is rotated to enable the fixed block 33 and the four cation exchange resin plates 36 to rotate anticlockwise, in the rotating process, the arc-shaped rod fixed on the inner wall of the reaction bin 1 can extrude the hemispherical air bag 37 to enable air inside the hemispherical air bag to enter the hollow rod 34, at the moment, the four ejector rods 39 extend outwards to enable the cation exchange resin plates 36 to rotate in a small range by taking the connecting part of the connecting rod 35 as the center, at the moment, the four cation exchange resin plates 36 are unfolded to improve the contact area between the four cation exchange resin plates and the sewage, and the sewage is replaced, meanwhile, the knob rod 52 drives the four stirring plates 53 to rotate by starting the motor two 51 to enable the sewage to roll circularly, each stirring plate 53 is provided with the elastic guide plate 531, and the flow direction of the elastic guide plate 531 is not consistent with the flow direction of the stirring plates 53, the flow guiding effect on sewage is improved, in addition, the wave-shaped guide plate 532 is rotatably connected in each stirring plate 53, in the rotating process of the stirring plates 53, the wave-shaped guide plate 532 can swing, the elastic guide plate 531 is impacted by the impact ball fixed on the wave-shaped guide plate, the flow guiding effect is further improved, after the replacement is finished, magnesium and calcium compounds can be attached to the surfaces of the four cation exchange resin plates 36, then the knob rod 32 is reversely rotated, the fixed block 33 and the four cation exchange resin plates 36 are restored to the initial state, and at the moment, the four cation exchange resin plates 36 are horizontally placed;
then, the cam 42 is rotated to make the cam 42 extrude the arc-shaped plate 48 to drive the first pneumatic rod 47 to move upwards, at this time, the air pressure in the pneumatic bin 43 increases, the increased air pressure in the pneumatic bin 43 makes the two second pneumatic rods 46 extend out, then the two second pneumatic rods 46 push the collection bin 41 to move, so that the collection bin 41 is displaced to the lower side of the four cation exchange resin plates 36, at this time, the first motor 44 is started to rotate the scraper 45 to remove the magnesium and calcium composite attachments attached to the four cation exchange resin plates 36, so as to ensure that no attachments are left on the surfaces of the four cation exchange resin plates 36, so that the displacement effect is better in the subsequent displacement operation, meanwhile, in the moving process of the collection bin 41, the extrusion plate 491 is pulled to move rightwards through the cord 493 to simultaneously extrude the two second elastic plates, and when the collection bin 41 is reset, under the resilience force of the two elastic plates, the extrusion plate 491 is moved leftwards to reset, at this time, the magnesium and calcium compounds cleaned in the collecting bin 41 are crushed, so that the collecting quantity of the collecting bin 41 can be increased, and the magnesium and calcium compounds can be prevented from being attached to the inner wall of the collecting bin 41.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A water softening installation for sewage treatment, includes reaction bin (1), its characterized in that: a discharge pipeline (2) controlled by a valve is fixed at the bottom of the reaction bin (1), a replacement device (3) is fixed on the right side of the reaction bin (1), the replacement device (3) comprises a bracket (31), the upper end of the bracket (31) is connected with a knob rod (32) in a penetrating and rotating way, the middle end of the outer wall of the knob rod (32) is fixed with a fixed block (33), a hollow rod (34) is fixed at the front end of the fixed block (33), the outer wall of the hollow rod (34) is rotationally connected with four cation exchange resin plates (36) through four connecting rods (35), a hemispherical air bag (37) is fixed at the front end of the hollow rod (34), four rectangular rods (38) are fixed at the middle end of the outer wall of the hollow rod (34), ejector rods (39) penetrate through and are connected with the insides of the four rectangular rods (38) in a sliding mode, and arc-shaped rods are fixed on the inner wall of the reaction bin (1);
the utility model discloses a reaction bin, including reaction bin (1), the backplate upper end of reaction bin (1) is provided with cleaning device (4), cleaning device (4) is including collecting storehouse (41), cam (42), atmospheric pressure storehouse (43), collect storehouse (41) sliding connection in the upper end of reaction bin (1), cam (42) rotate to be connected in the outside of reaction bin (1), atmospheric pressure storehouse (43) are fixed on the outer wall of reaction bin (1), collect embedded intrinsic motor (44) of lateral wall in storehouse (41), the front end output shaft department of motor (44) is fixed with scraper blade (45), the inside lower extreme sliding connection in atmospheric pressure storehouse (43) has atmospheric pressure pole (47), the bottom of atmospheric pressure pole (47) is fixed with arc (48), the equal sliding connection in other both ends in atmospheric pressure storehouse (43) has atmospheric pressure pole two (46), two atmospheric pressure pole two (46) all with collect storehouse (41) fixed, an extrusion device (49) is arranged in the collection bin (41);
the squeezing device (49) comprises a squeezing plate (491) and a guide wheel (492), the squeezing plate (491) is slidably connected to the middle end inside the collecting bin (41), a wire rope (493) is fixed to the front end of the squeezing plate (491), and the guide wheel (492) is rotatably connected to the outside of the collecting bin (41) through a connecting block;
the hemispherical air bags (37) are communicated with the hollow rod (34), and one ends, far away from the top rod (39), of the four rectangular rods (38) are communicated with the hollow rod (34).
2. The water softening device for wastewater treatment of claim 1, wherein: and a protection plate is fixed on the cation exchange resin plate (36), the protection plate is fixed with five surfaces of the cation exchange resin plate (36) close to the hollow rod (34), and one surface of the protection plate close to the hollow rod (34) is connected with the ejector rod (39) in a sliding manner.
3. The water softening device for wastewater treatment of claim 1, wherein: the bottom of the arc-shaped plate (48) is provided with an arc-shaped groove matched with the cam (42), a first elastic sheet is arranged between the bottom of the collecting bin (41) and the inner wall of the reaction bin (1), and an arc-shaped baffle is fixed on the upper surface of the collecting bin (41).
4. The water softening device for wastewater treatment of claim 1, wherein: one end of the wire rope (493) is fixed on the extrusion plate (491), the other end of the wire rope (493) penetrates through the collection bin (41) and is fixed with the inner wall of the reaction bin (1) through the guide wheel (492), and two elastic pieces II are arranged between the front end of the extrusion plate (491) and the collection bin (41).
5. The water softening device for wastewater treatment of claim 1, wherein: the inside in reaction storehouse (1) is provided with agitating unit (5), agitating unit (5) are including motor two (51), the axis of rotation department of motor two (51) is fixed with swing arm (52), the outside annular array of swing arm (52) is fixed with four stirring boards (53).
6. The water softening device for sewage treatment as claimed in claim 5, wherein: one end, far away from the rotating rod (52), of the stirring plate (53) is provided with a groove, an elastic guide plate (531) is fixed to the top end of the groove, a wave-shaped guide plate (532) is rotatably connected to the inside of the groove, and a striking ball is fixed to one end, close to the elastic guide plate (531), of the wave-shaped guide plate (532).
7. The water softening device for wastewater treatment of claim 6, wherein: the flow guide direction of the elastic flow guide plate (531) is not consistent with the flow guide direction of the stirring plate (53).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210411371.3A CN114506902B (en) | 2022-04-19 | 2022-04-19 | Water softening device for sewage treatment |
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| CN202210411371.3A CN114506902B (en) | 2022-04-19 | 2022-04-19 | Water softening device for sewage treatment |
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| CN114506902A CN114506902A (en) | 2022-05-17 |
| CN114506902B true CN114506902B (en) | 2022-06-24 |
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