CN115656164A - Pesticide residue smashing, extracting and detecting device and detecting method thereof - Google Patents
Pesticide residue smashing, extracting and detecting device and detecting method thereof Download PDFInfo
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- CN115656164A CN115656164A CN202211577217.XA CN202211577217A CN115656164A CN 115656164 A CN115656164 A CN 115656164A CN 202211577217 A CN202211577217 A CN 202211577217A CN 115656164 A CN115656164 A CN 115656164A
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Abstract
The invention belongs to the technical field of pesticide residue detection, and particularly relates to a pesticide residue crushing, extracting and detecting device and a detecting method thereof; the invention comprises a frame, wherein a driving motor, a crushing box and an extraction liquid box are connected to the frame; the crushing box is respectively provided with a feed inlet and a discharge outlet; the driving motor is connected with a rotating shaft, the rotating shaft is connected with a crushing mechanism for crushing samples, the outlet of the extraction liquid box is connected with a control valve assembly, the control valve assembly is connected with a liquid outlet pipe, one end of the liquid outlet pipe is arranged in the crushing box, the rack is connected with a horizontally arranged rotating rod, one end of the rotating rod is connected in the control valve assembly, and the other end of the rotating rod is meshed with the rotating shaft through a gear; a filter plate is connected in the crushing box, a funnel-shaped liquid storage box is arranged at the bottom of the crushing box, and a liquid outlet is arranged at the bottom of the liquid storage box; the invention solves the problem that pesticide residue detection in the prior art wastes time and labor by integrating sample crushing, pesticide residue extraction and detection.
Description
Technical Field
The invention relates to the technical field of pesticide residue detection, in particular to a pesticide residue smashing, extracting and detecting device and a pesticide residue smashing, extracting and detecting method.
Background
The pesticide residue refers to the general name of pesticide parent, pesticide residue harm derivatives, metabolites, degradation products and impurities which remain in the environment, organisms and food after the pesticide is used; the main reason for the over-standard pesticide residue of vegetables is that organophosphorus pesticides and carbamate pesticides such as methamidophos, omethoate, phorate, parathion, methyl parathion and the like which are prohibited to be used in vegetable production in some countries. When the agricultural and sideline products with pesticide residues exceeding the standard are eaten for a long time, although acute poisoning cannot be caused, chronic poisoning of people and animals can be caused, and diseases can be caused, so that the method is important for detecting food pesticide residues.
The prior patent application CN202210887987.8 discloses a pesticide residue rapid detection device, which comprises a base, wherein the upper surface of the base is fixedly connected with a cross beam through a vertical frame, and an extraction mechanism is arranged on the vertical frame; the liquid pumping mechanism is arranged on the base, drives the liquid pumping mechanism to convey extracting liquid into the extracting mechanism while crushing a sample, and conveys cleaning liquid into the extracting mechanism after detection is finished; the liquid dropping color developing mechanism is arranged on the base, the extraction mechanism drops the pesticide residue extraction liquid on the liquid dropping color developing mechanism, and the liquid dropping color developing mechanism is driven to shift the test card to the position right below the extraction mechanism in the process of conveying the extraction liquid into the extraction mechanism by the liquid pumping mechanism; according to the rapid detection device and the detection method for pesticide residues, the whole device can be carried to the field to detect the pesticide residues of agricultural products anytime and anywhere, and is convenient and practical. However, in the device, the threaded sleeve is in threaded connection with the shaft rod, so that the motor needs to rotate forwards and backwards in an intermittent manner, the shaft sleeve and the pressure rod are driven to move back and forth up and down, the requirement on the motor is high, the motor rotates forwards and backwards in an intermittent manner, a time interval exists between the motor and the pressure rod, and the sample crushing efficiency is reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a pesticide residue crushing, extracting and detecting device and a detecting method thereof, which solve the problem that pesticide residue detection in the prior art wastes time and labor by integrating sample crushing, pesticide residue extraction and detection.
In order to achieve the technical purpose, the specific technical scheme of the invention is that the pesticide residue crushing, extracting and detecting device and the pesticide residue crushing, extracting and detecting method provided by the invention comprise a rack, wherein a driving motor, a crushing box and an extracting solution box are connected to the rack; the crushing box is provided with a feeding hole and a discharging hole respectively; the driving motor is connected with a rotating shaft, the rotating shaft is connected with a crushing mechanism for crushing a sample, and the crushing mechanism is arranged in the crushing box; a control valve assembly is connected at the outlet of the extraction liquid tank, a liquid outlet pipe is connected to the control valve assembly, one end of the liquid outlet pipe is arranged in the crushing tank, a horizontally arranged rotating rod is connected to the rack, one end of the rotating rod is connected to the control valve assembly, and the other end of the rotating rod is meshed with the rotating shaft through a gear; a filter plate is connected in the crushing box, a filter screen is connected below the filter plate, a funnel-shaped liquid storage box is arranged at the bottom of the crushing box, a liquid outlet is arranged at the bottom of the liquid storage box, and a control valve is connected on the liquid outlet; a detection plate is arranged below the liquid storage tank, and a plurality of detection cards for detecting the mixed extracting solution are arranged on the detection plate.
As a preferable technical scheme of the invention, the crushing mechanism comprises a rotating cover, a crushing shaft is fixedly connected to the center of the lower surface of the rotating cover, a plurality of crushing blades are arranged on the surface of the crushing shaft, and a plurality of crushing rollers are uniformly connected to the lower surface of the rotating cover along the radial direction of the lower surface of the rotating cover.
As a preferred technical scheme of the invention, the rotating cover is provided with a connecting seat, the rotating shaft is fixedly connected with the connecting seat, the outer side of the connecting seat is rotatably connected with a sealing cover, one end of the liquid outlet pipe is connected with the sealing cover, the connecting seat is provided with a liquid inlet hole, and the lower surface of the rotating cover is uniformly provided with a plurality of spraying holes.
As a preferred technical scheme of the invention, the control valve assembly comprises a valve cover with a hollow structure, the liquid outlet pipe is connected with the valve cover, the valve cover is provided with a valve hole communicated with the interior of the liquid extraction tank, the surface of one end of the rotating rod, which is positioned in the valve cover, is connected with a movable seat, the movable seat and the rotating rod rotate together, and the movable seat is connected with a valve core matched with the valve hole.
According to a preferable technical scheme of the invention, a propeller is connected to the periphery of the movable seat, a rotating seat is rotatably connected to the surface of the movable seat, and a spring is connected between the rotating seat and the inner wall of the valve cover.
As a preferred technical solution of the present invention, the rotation cover is connected with a pressurization mechanism, the pressurization mechanism includes a pressurization cylinder, a piston rod is movably connected in the pressurization cylinder, the piston rod is connected with a sealing seat sealed with an inner wall of the pressurization cylinder, an air hole is arranged on the surface of the sealing seat, and an air valve made of elastic material and opened in one direction is arranged in the air hole.
As a preferred technical scheme of the invention, a crankshaft is arranged on the rotating rod, the surface of the crankshaft is rotatably connected with a connecting rod, and one end of the connecting rod is connected with the piston rod.
As a preferable technical scheme of the invention, the liquid outlet is connected with a flow distribution cover, the flow distribution cover is provided with a plurality of drip nozzles, and the drip nozzles are arranged right above the detection card.
A detection method of a pesticide residue smashing, extracting and detecting device comprises the following steps:
step one, putting a sample to be detected into a crushing box, starting a driving motor, driving a crushing mechanism to rotate by the driving motor, and crushing the sample;
step two, the driving motor simultaneously drives the rotating rod to rotate, the rotating rod rotates to drive the movable seat to move, so that the valve hole is opened, and the extracting solution flows into the rotating cover through the valve hole and the liquid outlet pipe; the rotating cover is pressurized through a pressurizing mechanism while the rotating rod rotates, so that the extracting solution is uniformly sprayed on the surface of the crushed sample at high pressure;
step three, filtering the extracted pesticide residue in the sample by the extracting solution, then feeding the filtered pesticide residue into a liquid storage tank, feeding the filtered pesticide residue into a flow distribution cover through a control valve, finally dripping the pesticide residue onto a detection card through a dripping nozzle, and comparing the colors displayed by the detection card to obtain a detection result
The beneficial effects of the invention are as follows:
1. according to the invention, the sample is crushed by the crushing mechanism driven by the driving motor, the pesticide residue of the crushed sample is extracted by the extracting solution, and the extracted mixed solution is directly dripped on the detection card, so that the integration of crushing, extracting and detecting the sample is realized, and the detection efficiency is improved.
2. The control valve assembly controls the extract to flow into the rotating cover, the pressure in the rotating cover is increased through the pressure increasing mechanism, the extract is uniformly sprayed on the surface of a sample at high pressure, and the effect of extracting pesticide residues on the surface of the sample is better.
Drawings
Fig. 1 is a schematic perspective view of a pesticide residue smashing, extracting and detecting device provided by the invention.
Fig. 2 is a schematic view of the internal structure of the present invention.
Fig. 3 is a schematic structural view of the crushing mechanism.
Fig. 4 is a partially enlarged view of fig. 3 at B.
Fig. 5 is a schematic structural view of the control valve assembly.
Fig. 6 is a partially enlarged view of a portion a in fig. 2.
Fig. 7 is a schematic structural view of the pressurization mechanism.
In the figure: 1. a frame; 2. a crushing box; 3. a crushing mechanism; 31. a rotating cover; 32. a crushing shaft; 33. a crushing blade; 34. a crushing roller; 35. a spray opening; 36. a sealing cover; 37. a connecting seat; 38. a liquid inlet hole; 4. an extract tank; 5. a control valve assembly; 51. a valve housing; 52. a valve bore; 53. a movable seat; 54. a valve core; 55. a gasket; 56. a rotating seat; 57. a spring; 58. a propeller; 6. a pressurization mechanism; 61. a pressurizing cylinder; 62. a piston rod; 63. a sealing seat; 64. air holes; 65. an air valve; 7. a drive motor; 8. a rotating shaft; 9. rotating the rod; 10. filtering with a screen; 11. filtering a plate; 12. a liquid outlet; 13. a control valve; 14. a flow dividing cover; 15. a drip nozzle; 16. detecting a plate; 17. detecting the card; 18. a liquid outlet pipe; 19. a crankshaft; 20. a connecting rod; 21. a liquid storage tank.
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.
Example (b): as shown in fig. 1-7, a pesticide residue crushing, extracting and detecting device comprises a frame 1, wherein a driving motor 7, a crushing tank 2 and an extraction liquid tank 4 are connected to the frame 1; a feed port and a discharge port are respectively arranged on the crushing box 2, a sample is put into the crushing box 2 from the feed port, the discharge port is arranged at the bottom of the crushing box 2 and is provided with a valve, and the crushed sample is cleaned from the discharge port; the driving motor 7 is connected with a rotating shaft 8, the rotating shaft 8 is vertically arranged, the rotating shaft 8 is connected with a crushing mechanism 3 for crushing samples, and the crushing mechanism 3 is arranged in the crushing box 2; an organic solvent for extracting the pesticide residues of the sample is filled in the extraction liquid box 4, a control valve component 5 is connected to an outlet of the extraction liquid box 4, the control valve component 5 is used for controlling the liquid outlet of the extraction liquid, a liquid outlet pipe 18 is connected to the control valve component 5, one end of the liquid outlet pipe 18 is arranged in the crushing box 2, the organic solvent enters the crushing box 2 through the liquid outlet pipe 18, and the pesticide residues of the sample are mixed and extracted; a horizontally arranged rotating rod 9 is connected to the rack 1, one end of the rotating rod 9 is connected to the inside of the control valve assembly 5, the other end of the rotating rod 9 is meshed with the rotating shaft 8 through a gear, and the rotating shaft 8 drives the rotating rod 9 to rotate when rotating; the device comprises a crushing box 2, a filter plate 11, a sample, a filter screen 10, a funnel-shaped liquid storage box 21, a liquid outlet 12, a flow dividing cover 14, a plurality of liquid dripping nozzles 15, a control valve 13, a detection plate 16 and a plurality of detection cards 17, wherein the filter plate 11 is connected in the crushing box 2, the sample is placed on the filter plate 11, the filter screen 10 is connected below the filter plate 11, the bottom of the crushing box 2 is provided with the funnel-shaped liquid storage box 21, the mixed liquid enters the liquid storage box 21 after being filtered, the bottom of the liquid storage box 21 is provided with the liquid outlet 12, the position of the liquid outlet 12 is connected with the flow dividing cover 14, the flow dividing cover 14 is provided with the plurality of liquid dripping nozzles 15, the liquid outlet 12 is connected with the control valve 13, the detection plate 16 is arranged below the liquid storage box 21, and the detection cards 17 for detecting the mixed liquid are arranged on the detection plate 16; the drip nozzle 15 is arranged right above the detection card 17; after the control valve 13 is opened, the mixed liquid enters the shunting cover 14 and is dripped on the detection card 17 through the dripping nozzle 15, and the detection result is obtained through color development contrast.
As shown in fig. 3-4, the pulverizing mechanism 3 includes a rotating cover 31, the rotating shaft 8 drives the rotating cover 31 to rotate, the inside of the rotating cover 31 is a hollow structure, a pulverizing shaft 32 is fixedly connected to the center of the lower surface of the rotating cover 31, a plurality of pulverizing blades 33 are arranged on the surface of the pulverizing shaft 32, and a plurality of pulverizing rollers 34 are uniformly connected to the lower surface of the rotating cover 31 along the radial direction thereof, so as to improve the pulverizing effect of the sample; and rotate and install connecting seat 37 on the cover 31, axis of rotation 8 and connecting seat 37 fixed connection, and the connecting seat 37 outside is rotated and is connected with sealed cowling 36, axis of rotation 8 is sealed with sealed cowling 36, the one end and the sealed cowling 36 of drain pipe 18 are connected, and be equipped with feed liquor hole 38 on the connecting seat 37, and rotate cover 31 lower surface and evenly be equipped with a plurality of spray openings 35, organic solvent passes through in the drain pipe 18 gets into sealed cowling 36, and flow to rotate inside the cover 31 through feed liquor hole 38, at last through the even blowout of spray opening 35.
As shown in fig. 5, the control valve assembly 5 includes a valve cover 51 with a hollow structure, the liquid outlet pipe 18 is connected with the valve cover 51, a valve hole 52 communicated with the interior of the extraction liquid tank 4 is formed in the valve cover 51, a movable seat 53 is connected to the surface of one end of the rotating rod 9 positioned in the valve cover 51, the movable seat 53 rotates together with the rotating rod 9, a valve core 54 matched with the valve hole 52 is connected to the movable seat 53, and a sealing gasket is connected to the valve core 54, so that the sealing effect is improved; a propeller 58 is connected to the periphery of the movable seat 53, thrust is generated when the propeller 58 rotates, a rotating seat 56 is rotatably connected to the surface of the movable seat 53, and a spring 57 is connected between the rotating seat 56 and the inner wall of the valve cover 51; when the rotating rod 9 does not rotate, the valve core 54 blocks the valve hole 52 through the elastic force of the spring 57, and the valve hole 52 is sealed; when the rotating rod 9 rotates, the rotating rod 9 drives the propeller 58 to rotate, and the air flow velocities at two sides are different when the propeller 58 rotates, so that thrust is generated at one side, when the thrust is greater than the elastic force of the spring 57, the movable seat 53 drives the valve core 54 to be far away from the valve hole 52, so that the valve hole 52 is opened, and at the moment, the extracting solution flows into the liquid outlet pipe 18 through the valve hole 52; the control valve assembly 5 can automatically discharge liquid when rotating along with the rotating rod 9, and when the rotating rod 9 stops rotating, the control valve assembly 5 is automatically closed, so that the use is convenient.
As shown in fig. 6-7, in order to uniformly spray the extracting solution from the rotating cover 31 to the pulverizing box 2 under high pressure to achieve better extracting effect, the rotating cover 31 is connected with a pressurizing mechanism 6, the pressurizing mechanism 6 comprises a pressurizing cylinder 61, a piston rod 62 is movably connected in the pressurizing cylinder 61, a sealing seat 63 sealed with the inner wall of the pressurizing cylinder 61 is connected on the piston rod 62, an air hole 64 is arranged on the surface of the sealing seat 63, an air valve 65 made of elastic material and opened in one direction is arranged in the air hole 64, and when the sealing seat 63 moves upwards, the air valve 65 is opened to supply air into the pressurizing cylinder 61; when the sealing seat 63 moves downwards, the air valve 65 is closed, air enters the rotating cover 31, the air pressure in the rotating cover 31 is increased, and the extracting solution is sprayed out at high pressure; meanwhile, the crankshaft 19 is arranged on the rotating rod 9, the connecting rod 20 is connected to the surface of the crankshaft 19 in a rotating mode, one end of the connecting rod 20 is connected with the piston rod 62, and the connecting rod 20 drives the piston rod 62 to reciprocate up and down when the rotating rod 9 rotates, so that the rotating cover 31 is continuously pressurized.
A detection method of a pesticide residue smashing, extracting and detecting device comprises the following steps:
step one, a sample to be detected is put into a crushing box 2, a driving motor 7 is started, the driving motor 7 drives a crushing mechanism 3 to rotate, and the sample is crushed;
step two, the driving motor 7 simultaneously drives the rotating rod 9 to rotate, the rotating rod 9 rotates to drive the movable seat 53 to move, so that the valve hole 52 is opened, and the extracting solution flows into the rotating cover 31 through the valve hole 52 and the liquid outlet pipe 18; the rotating cover 31 is pressurized by the pressurizing mechanism 6 while the rotating rod 9 rotates, so that the extracting solution is uniformly sprayed on the surface of the crushed sample at high pressure;
step three, the extracting solution is filtered to enter the liquid storage tank 21 after extracting pesticide residue components in the sample, enters the flow distribution cover 14 through the control valve 13, finally drips onto the detection card 17 through the drip nozzle 15, and then compares the colors displayed by the detection card 17 to obtain a detection result.
Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The pesticide residue smashing, extracting and detecting device is characterized by comprising a rack (1), wherein a driving motor (7), a smashing box (2) and an extracting solution box (4) are connected to the rack (1); the crushing box (2) is respectively provided with a feeding hole and a discharging hole;
a rotating shaft (8) is connected to the driving motor (7), a crushing mechanism (3) for crushing a sample is connected to the rotating shaft (8), and the crushing mechanism (3) is arranged in the crushing box (2);
a control valve component (5) is connected to an outlet of the extraction liquid box (4), a liquid outlet pipe (18) is connected to the control valve component (5), one end of the liquid outlet pipe (18) is arranged in the crushing box (2), a rotating rod (9) which is horizontally arranged is connected to the rack (1), one end of the rotating rod (9) is connected to the control valve component (5), and the other end of the rotating rod (9) is meshed with the rotating shaft (8) through a gear;
a filter plate (11) is connected in the crushing box (2), a filter screen (10) is connected below the filter plate (11), a funnel-shaped liquid storage box (21) is arranged at the bottom of the crushing box (2), a liquid outlet (12) is arranged at the bottom of the liquid storage box (21), and a control valve (13) is connected to the liquid outlet (12);
a detection plate (16) is arranged below the liquid storage tank (21), and a plurality of detection cards (17) for detecting the mixed extracting solution are arranged on the detection plate (16).
2. The pesticide residue smashing, extracting and detecting device according to claim 1, wherein the smashing mechanism (3) comprises a rotating cover (31), a smashing shaft (32) is fixedly connected to the center of the lower surface of the rotating cover (31), a plurality of smashing blades (33) are arranged on the surface of the smashing shaft (32), and a plurality of smashing rollers (34) are uniformly connected to the lower surface of the rotating cover (31) in the radial direction of the smashing roller.
3. The pesticide residue smashing, extracting and detecting device according to claim 2, wherein a connecting seat (37) is installed on the rotating cover (31), the rotating shaft (8) is fixedly connected with the connecting seat (37), a sealing cover (36) is rotatably connected to the outer side of the connecting seat (37), one end of the liquid outlet pipe (18) is connected with the sealing cover (36), a liquid inlet hole (38) is formed in the connecting seat (37), and a plurality of spraying ports (35) are uniformly formed in the lower surface of the rotating cover (31).
4. The pesticide residue smashing, extracting and detecting device according to claim 1 or 3, wherein the control valve assembly (5) comprises a valve cover (51) with a hollow structure, the liquid outlet pipe (18) is connected with the valve cover (51), a valve hole (52) communicated with the inside of the liquid extracting tank (4) is formed in the valve cover (51), a movable seat (53) is connected to the surface of one end, located inside the valve cover (51), of the rotating rod (9), the movable seat (53) rotates together with the rotating rod (9), and a valve core (54) matched with the valve hole (52) is connected to the movable seat (53).
5. The pesticide residue smashing, extracting and detecting device according to claim 4, wherein a propeller (58) is connected to the periphery of the movable seat (53), a rotating seat (56) is rotatably connected to the surface of the movable seat (53), and a spring (57) is connected between the rotating seat (56) and the inner wall of the valve cover (51).
6. The pesticide residue smashing, extracting and detecting device according to claim 5, wherein a pressurizing mechanism (6) is connected to the rotating cover (31), the pressurizing mechanism (6) comprises a pressurizing barrel (61), a piston rod (62) is movably connected to the inside of the pressurizing barrel (61), a sealing seat (63) sealed with the inner wall of the pressurizing barrel (61) is connected to the piston rod (62), an air hole (64) is formed in the surface of the sealing seat (63), and an air valve (65) made of elastic materials and opened in one direction is arranged in the air hole (64).
7. The pesticide residue smashing, extracting and detecting device according to claim 6, wherein a crankshaft (19) is arranged on the rotating rod (9), a connecting rod (20) is connected to the surface of the crankshaft (19) in a rotating mode, and one end of the connecting rod (20) is connected with the piston rod (62).
8. The pesticide residue smashing, extracting and detecting device according to claim 1 or 7, wherein a flow dividing cover (14) is connected to the liquid outlet (12), a plurality of liquid dropping nozzles (15) are arranged on the flow dividing cover (14), and the liquid dropping nozzles (15) are arranged right above the detecting card (17).
9. The detection method of the pesticide residue smashing, extracting and detecting device as claimed in claim 8, characterized by comprising the following steps:
step one, a sample to be detected is put into a crushing box (2), a driving motor (7) is started, the driving motor (7) drives a crushing mechanism (3) to rotate, and the sample is crushed;
step two, the driving motor (7) simultaneously drives the rotating rod (9) to rotate, the rotating rod (9) rotates to drive the movable seat (53) to move, so that the valve hole (52) is opened, and the extracting solution flows into the rotating cover (31) through the valve hole (52) and the liquid outlet pipe (18); the rotating cover (31) is pressurized by the pressurizing mechanism (6) while the rotating rod (9) rotates, so that the extracting solution is uniformly sprayed on the surface of the crushed sample at high pressure;
step three, the extracting solution is filtered to enter a liquid storage tank (21) after pesticide residue components in the sample are extracted, enters a flow dividing cover (14) through a control valve (13), finally drops onto a detection card (17) through a liquid dropping nozzle (15), and then compares the colors displayed by the detection card (17) to obtain a detection result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211577217.XA CN115656164B (en) | 2022-12-09 | 2022-12-09 | Pesticide residue smashing, extracting and detecting device and detecting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211577217.XA CN115656164B (en) | 2022-12-09 | 2022-12-09 | Pesticide residue smashing, extracting and detecting device and detecting method thereof |
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| CN115656164A true CN115656164A (en) | 2023-01-31 |
| CN115656164B CN115656164B (en) | 2023-03-14 |
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| CN209470953U (en) * | 2019-01-18 | 2019-10-08 | 山东泛谱检测有限公司 | Sample broke device for food Detecting Pesticide |
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| CN115656164B (en) | 2023-03-14 |
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