CN112889897B - Lobster screening and cleaning system - Google Patents
Lobster screening and cleaning system Download PDFInfo
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- CN112889897B CN112889897B CN202110111747.4A CN202110111747A CN112889897B CN 112889897 B CN112889897 B CN 112889897B CN 202110111747 A CN202110111747 A CN 202110111747A CN 112889897 B CN112889897 B CN 112889897B
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- screening
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- A—HUMAN NECESSITIES
- A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
- A22C—PROCESSING MEAT, POULTRY, OR FISH
- A22C29/00—Processing shellfish or bivalves, e.g. oysters, lobsters; Devices therefor, e.g. claw locks, claw crushers, grading devices; Processing lines
- A22C29/02—Processing shrimps, lobsters or the like ; Methods or machines for the shelling of shellfish
- A22C29/021—Cleaning operations on shellfish, e.g. evisceration, brushing
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- A—HUMAN NECESSITIES
- A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
- A22C—PROCESSING MEAT, POULTRY, OR FISH
- A22C29/00—Processing shellfish or bivalves, e.g. oysters, lobsters; Devices therefor, e.g. claw locks, claw crushers, grading devices; Processing lines
- A22C29/005—Grading or classifying shellfish or bivalves
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- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
A screening and cleaning system for lobsters is characterized in that qualified lobsters fall onto a receiving tray from one end of a screen cylinder, a cloth motor is used for driving a supporting shaft to rotate, a cam is driven to rotate, the receiving tray is jacked to float up and down when the cam rotates, and then the lobsters on the receiving tray are shaken off into a cleaning box, the receiving tray drives a side supporting frame at the side part of the receiving tray, a transmission shaft and a transmission gear to move together in the up-and-down floating process, the transmission gear is meshed with a transmission rack which is fixed on a tray frame, the transmission gear drives the transmission shaft to rotate when the receiving tray moves, the transmission shaft drives a middle shaft to rotate through a first bevel gear and a second bevel gear, the middle shaft drives a connecting rod to move when rotating, the connecting rod pushes the material plate to be paved inside a paving groove to reciprocate, the lobsters falling onto the paving plate from the screen cylinder are dispersed through the reciprocating motion of the paving plate, and then the lobsters are floated off into the cleaning box from top to bottom by the receiving tray, and the lobsters are effectively prevented from being piled up and entering the cleaning box.
Description
Technical Field
The invention relates to the field of lobster production and processing equipment, in particular to a screening and cleaning system for lobsters.
Background
Crayfish is also known as procambarus clarkii, red crayfish, and freshwater crayfish. It is shaped like shrimp and hard shell. The length of the formed body is about 5.6-11.9 cm, the formed body is dark red, the crust part is nearly black, and the back of the abdomen is provided with a wedge-shaped stripe. The juvenile shrimp bodies were uniformly gray and sometimes had black ripples. The chelate is long and narrow. The middle part of the crust is not separated by the mesh-shaped gap, and the crust is obviously provided with particles. The frontal sword has lateral spines or the end of the frontal sword has nicks. The crayfish has high protein content in the body, has soft meat, is easy to digest, and is a good food for people who are weak and need to be recuperated after illness; the shrimp meat is rich in magnesium, zinc, iodine, selenium, etc., and magnesium has important regulating effect on heart activity, can protect cardiovascular system, reduce cholesterol content in blood, prevent arteriosclerosis, and dilate coronary artery, and is beneficial to preventing hypertension and myocardial infarction. Crayfish contains astaxanthin which is a strong antioxidant, and scientists at osaka university of japan found that astaxanthin contributes to the elimination of "jet lag" caused by jet lag. In addition, the crayfish can be used as a medicine for eliminating phlegm and stopping cough and promoting granulation and healing of wounds after operation.
In the lobster course of working, need filter, wash the lobster in advance, when the lobster after the screening is input to the washing pond inside, the lobster piles up easily and gets into to the washing pond, and the lobster distributes unevenly in the washing pond, and then influences lobster cleaning performance.
Disclosure of Invention
The invention aims to solve the problem that the cleaning effect of lobsters is influenced by the fact that screened lobsters are accumulated into a cleaning pond, and aims to provide a screening and cleaning system for the lobsters.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a screening and cleaning system for lobsters, comprising:
the device comprises a device bracket, wherein a cleaning box is arranged on the device bracket, one end of the cleaning box is provided with a screening frame, four supporting rotating wheels are arranged on the screening frame, the four supporting rotating wheels are pairwise arranged, and one supporting rotating wheel is driven by a driving motor;
the screen drum is arranged on the upper part of the support rotating wheel, and the outer ring of the screen drum is tangent to the support rotation;
the screen frame is provided with a guide hopper, the screen drum is located on the upper portion of the guide hopper, a material tray frame is fixedly mounted on the lateral portion of the screen frame, a supporting spring is mounted on the material tray frame, a material receiving disc is mounted on the supporting spring, one side of the material receiving disc is hinged to the screen frame, one end of the screen drum is located on the upper portion of the material receiving disc, a supporting shaft is rotatably mounted on the material tray frame and driven by a cloth motor, a cam is mounted on the supporting shaft and located on the lower portion of the material receiving disc, a material paving groove is formed in the material receiving disc, a material paving plate is slidably mounted in the material paving groove, two ends of the material paving plate are respectively penetrated out of two sides of the material receiving disc, stand columns are respectively mounted on the upper end faces of two sides of the material paving plate, side supporting frames are fixedly provided with transmission shafts, transmission gears are mounted on one ends of the side supporting frames, the middle shafts are perpendicular to the material paving plate, first bevel gears are mounted on the middle shafts, second bevel gears are mounted on the transmission shafts, the first bevel gears are meshed with bar-shaped racks fixedly mounted on the upper ends of the middle shafts, connecting rods are provided with transmission holes, and bar-shaped racks.
Further, a sieve section of thick bamboo is including supporting ring circle, bone pole, it is equipped with two to support the ring circle, the bone pole is connected between two support rings, the bone pole uses the support ring circle center as central point annular array setting, it is equipped with the annular groove for the outer lane side to support the ring circle, annular groove internally mounted has the ring gear, it is equipped with tooth to support the runner outer lane, it stretches into to the annular groove inside to support the runner, the tooth meshing ring gear of its outer lane.
Further, it has the conveying roller to wash incasement installs internally, the conveying roller has driving motor drive, install pay-off conveying mesh belt on the conveying roller, take up tray one end to be located pay-off conveying mesh belt upper portion, be equipped with the gas injection network pipe between the upper and lower tape surface of pay-off conveying mesh belt, be equipped with the gas pocket on the gas injection network pipe, the gas injection network pipe passes through the gas outlet of pipe connection gas injection pump, pay-off conveying mesh belt both sides are fixed with spacing respectively, it has the division board to wash incasement internally mounted, be equipped with the wearing groove on the division board, slidable mounting has spacing channel in the wearing groove, spacing sliding through spacing channel of pay-off conveying mesh belt both sides, spacing channel lateral part equidistant is equipped with the connecting seat, articulates two traction rods on every connecting seat, equidistant being equipped with the mounting groove on wasing the incasement lateral wall, slidable mounting has two movable blocks in every mounting groove, is equipped with the extrusion spring between two movable blocks, and two traction rods on the same connecting seat articulate on two movable blocks in same mounting groove one to one.
Furthermore, the inboard fixed mounting of spacing channel notch has first baffle and second baffle, pay-off conveying mesh belt passes between by first baffle and the second baffle, first baffle and second baffle are close to spacing one side and install the buffering wheel, the spacing of buffering wheel contact.
Furthermore, both sides of the material receiving disc are respectively provided with a side plate.
The beneficial effects of the invention are:
the lobster screening machine is simple in structure, a screening drum is used for screening the lobsters, the screened qualified lobsters fall onto a receiving tray from one end of the screening drum, a material distribution motor is used for driving a supporting shaft to rotate, and further driving a cam to rotate, the cam jacks up the receiving tray to float up and down when rotating, and further shaking the lobsters on the receiving tray into a cleaning box, the receiving tray drives a side supporting frame, a transmission shaft and a transmission gear on the side portion of the receiving tray to move together in the up-and-down floating process, the transmission gear is meshed with a transmission rack, the transmission rack is fixed on a tray rack when the receiving tray moves up and down, so that the transmission gear drives the transmission shaft to rotate, the transmission shaft drives an intermediate shaft to rotate through a first bevel gear and a second bevel gear, the intermediate shaft drives a connecting rod to move when rotating, the connecting rod pushes a spreading plate to do reciprocating motion in a spreading groove, the lobsters fall onto the spreading plate from the screening drum, are dispersed through the reciprocating motion of the spreading plate, and then are floated up and shaken into the cleaning box by the receiving tray up and down, and the lobsters are effectively prevented from being accumulated into the cleaning box.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a side view of a take-up pan of the present invention;
FIG. 3 is a top view of the take-up tray of the present invention;
FIG. 4 is a view showing the construction of the shaft and intermediate shaft of the present invention;
FIG. 5 is a block diagram of a screen cylinder of the present invention;
FIG. 6 is a cut-away view of the cleaning tank of the present invention;
FIG. 7 is an enlarged view of portion A of FIG. 6 in accordance with the present invention;
FIG. 8 is a schematic view of a drawbar arrangement according to the present invention;
FIG. 9 is an enlarged view of portion B of FIG. 8 in accordance with the present invention;
in the figure: 1. a device holder; 2. a screen cylinder; 12. a cleaning tank; 14. a screening rack; 15. a support runner; 16. a material guide hopper; 21. a material tray frame; 22. a support spring; 23. a take-up pan; 24. a support shaft; 25. a cloth motor; 26. a cam; 31. a material paving groove is formed; 32. paving a material plate; 33. a column; 34. a side support frame; 35. a drive shaft; 36. a transmission gear; 37. an intermediate shaft; 38. a first bevel gear; 39. a second bevel gear; 40. a connecting rod; 41. a strip-shaped hole; 42. a drive rack; 43. a side plate; 51. a support loop; 52. a bone shaft; 53. an annular groove; 54. a toothed ring; 61. a conveying roller; 62. a feeding conveying mesh belt; 63. a gas injection network pipe; 64. an air injection pump; 65. a limiting strip; 66. a partition plate; 67. penetrating a groove; 68. a limiting channel; 69. a connecting seat; 70. a draw bar; 71. mounting grooves; 72. a moving block; 73. extruding the spring; 74. a first baffle; 75. a second baffle; 76. and a buffer wheel.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific drawings.
Example 1
As shown in fig. 1-4; a screening and cleaning system for lobsters, comprising:
the device comprises a device bracket 1, wherein a cleaning box 12 is arranged on the device bracket 1, one end of the cleaning box 12 is provided with a screening frame 14, four supporting rotating wheels 15 are arranged on the screening frame 14, the four supporting rotating wheels 15 are arranged in pairs, and one supporting rotating wheel 15 is driven by a driving motor;
the screen drum 2 is arranged on the upper part of the supporting rotating wheel 15, and the outer ring of the screen drum 2 is tangent to the supporting rotating wheel 15;
the screening frame 14 is provided with a material guide hopper 16, the screen cylinder 2 is positioned on the upper portion of the material guide hopper 16, the lateral portion of the screening frame 14 is fixedly provided with a material tray frame 21, the material tray frame 21 is provided with a supporting spring 22, the supporting spring 22 is provided with a material receiving disc 23, one side of the material receiving disc 23 is hinged on the screening frame 14, one end of the screen cylinder 2 is positioned on the upper portion of the material receiving disc 23, the material tray frame 21 is rotatably provided with a supporting shaft 24, the supporting shaft 24 is driven by a material distributing motor 25, the supporting shaft 24 is provided with a cam 26, the cam 26 is positioned on the lower portion of the material receiving disc 23, the material receiving disc 23 is provided with a material paving groove 31, a material paving plate 32 is slidably arranged in the material paving groove 31, two ends of the material paving plate 32 respectively penetrate through two sides of the material receiving disc 23, the lateral portion of the material receiving disc 23 is fixedly provided with a side support frame 34, the side support frame 34 is provided with a transmission shaft 35, one end of the transmission gear 36 is fixedly provided with a middle shaft 37, the middle shaft 37 is perpendicular to the material paving plate 32, the middle shaft 37 is provided with a first bevel gear 38, the transmission shaft 39 is engaged with a bevel gear, the middle shaft 40, the transmission rod 40 is fixedly provided with a strip-shaped rack 42, the transmission rod 41 is positioned on the transmission rod 21, and engaged with the rack 42.
The two sides of the material receiving disc 23 are respectively provided with a side plate 43.
The lobsters are screened by the screen drum 2, the qualified lobsters fall into the receiving tray 23 from one end of the screen drum 2, the cloth motor 25 is used for driving the support shaft 24 to rotate, the cam 26 is further driven to rotate, the receiving tray 23 is jacked to float up and down when the cam 26 rotates, the lobsters on the receiving tray 23 are shaken down into the cleaning box 12, the receiving tray 23 drives the side support frame 34 on the side portion of the receiving tray, the transmission shaft 35 and the transmission gear 36 to move together in the up-and-down floating process, the transmission gear 36 is meshed with the transmission rack 42, the transmission rack 42 is fixed on the tray frame 21 when the receiving tray 23 moves up and down, the transmission gear 36 drives the transmission shaft 35 to rotate, the transmission shaft 35 rotates and drives the intermediate shaft 37 to rotate through the first bevel gear 38 and the second bevel gear 39, the intermediate shaft 37 rotates and drives the connecting rod 40 to move, the connecting rod 40 pushes the spreading plate 32 to do reciprocating motion in the spreading groove 31, the lobsters fall from the screen drum 2 into the spreading plate 32, and float up and down through the spreading plate 32, and then shake into the cleaning box 12, and accumulation of the lobsters is effectively avoided.
Example 2
On the basis of the embodiment 1, as shown in fig. 1 and fig. 5; the screen drum 2 comprises two support rings 51 and two bone rods 52, the two support rings 51 are arranged, the two bone rods 52 are connected between the two support rings 51, the bone rods 52 are arranged in an annular array by taking the circle center of the support rings 51 as a central point, the support rings 51 are provided with annular grooves 53 on the outer ring side, the annular grooves 53 are internally provided with toothed rings 54, the outer ring of the support runner 15 is provided with teeth, and the support runner 15 extends into the annular grooves 53, and the teeth on the outer ring of the support runner 15 are meshed with the toothed rings 54.
The driving motor drives the supporting rotating wheel 15 to rotate, then drives the toothed ring 54 and the screen drum 2 to rotate, lobsters needing to be screened are sent into the screen drum 2 from one end of the screen drum 2, the smaller lobster body can pass through the gap between the bone rods 52 and fall into the material guide hopper 16, the larger lobster body can flow out to the material receiving tray 23 through the other end of the screen drum 2, and the larger qualified lobster body can be screened out.
Example 3
Based on example 1, as shown in FIGS. 6-9; the cleaning box 12 is internally provided with a conveying roller 61, the conveying roller 61 is driven by a conveying motor, the conveying roller 61 is provided with a feeding conveying mesh belt 62, one end of a material receiving disc 23 is positioned at the upper part of the feeding conveying mesh belt 62, a gas injection mesh pipe 63 is arranged between the upper and lower belt surfaces of the feeding conveying mesh belt 62, the gas injection mesh pipe 63 is provided with a gas hole, the gas injection mesh pipe 63 is connected with a gas injection pump 64 gas outlet through a pipeline, two sides of the feeding conveying mesh belt 62 are respectively fixed with a limiting strip 65, the cleaning box 12 is internally provided with a separating plate 66, the separating plate 66 is provided with a through groove 67, a limiting groove 68 is slidably arranged in the through groove 67, the limiting strips 65 at two sides of the feeding conveying mesh belt 62 slidably penetrate through the limiting groove 68, connecting seats 69 are arranged at equal intervals at the side part of the limiting groove 68, two traction rods 70 are hinged on each connecting seat 69, an installing groove 71 is arranged at equal intervals on the inner side wall of the cleaning box 12, two movable blocks 72 are slidably arranged in each installing groove 71, an extrusion spring 73 is arranged between the two movable blocks 72, and one-to one on the same connecting seat 69 is hinged on the two movable blocks 72.
A first baffle 74 and a second baffle 75 are fixedly arranged on the inner side of the notch of the limiting channel 68, the feeding conveying mesh belt 62 passes through the first baffle 74 and the second baffle 75, a buffer wheel 76 is arranged on one side of the first baffle 74 and one side of the second baffle 75 close to the limiting strip 65, and the buffer wheel 76 contacts the limiting strip 65. Reducing friction between the stop bar 65 and the stop channel 68.
The lobster shaken off to the inside of the cleaning box 12 through the material receiving disc 23 falls to the upper part of the feeding and conveying mesh belt 62 and is driven by the feeding and conveying mesh belt 62 to move in the cleaning box 12, when the lobster moves to the upper part of the air injection mesh pipe 63, the air injected by the air injection mesh pipe 63 drives water flow to impact the lobster, so that the lobster is cleaned, the upper belt surface of the feeding and conveying mesh belt 62 is kept in a tight state all the time by arranging the limiting strips 65 at the two sides of the feeding and conveying mesh belt 62 and enabling the limiting strips 65 to be located in the limiting channels 68 in a sliding mode, the traction rod has tension on the limiting channels 68 and supports the two sides of the upper belt surface of the feeding and conveying mesh belt 62 through the limiting channels 68, the feeding and conveying mesh belt 62 is prevented from sinking, gaps are not generated between the partition plate 66 and the upper belt surface of the feeding and conveying mesh belt 62 due to the support of the limiting channels 68, and the lobster is effectively prevented from falling from the two sides of the feeding and conveying mesh belt 62 into the cleaning box 12.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A screening, cleaning system of lobster, characterized by comprising:
the device comprises a device bracket, wherein a cleaning box is arranged on the device bracket, one end of the cleaning box is provided with a screening frame, four supporting rotating wheels are arranged on the screening frame, the four supporting rotating wheels are arranged in pairs, and one supporting rotating wheel is driven by a driving motor;
the screen drum is arranged on the upper part of the supporting rotating wheel, and the outer ring of the screen drum is tangent to the supporting rotating wheel;
the screening machine is characterized in that a material guide hopper is arranged on the screening frame, the screen drum is located at the upper part of the material guide hopper, a material tray frame is fixedly arranged on the lateral part of the screening frame, a support spring is arranged on the material tray frame, a material receiving disc is arranged on the support spring, one side of the material receiving disc is hinged on the screening frame, one end of the screen drum is located at the upper part of the material receiving disc, a support shaft is rotatably arranged on the material tray frame and driven by a material distribution motor, a cam is arranged on the support shaft and located at the lower part of the material receiving disc, a material spreading groove is arranged on the material receiving disc, a material spreading plate is slidably arranged in the material spreading groove, two ends of the material spreading plate penetrate out of two sides of the material receiving disc respectively, stand columns are arranged on the upper end surfaces of two sides of the material spreading plate respectively, a side support frame is fixed on the lateral part of the material receiving disc, a transmission shaft is arranged on the side support frame, a transmission gear is fixedly arranged at one end of the transmission shaft, a middle shaft is arranged on the side support frame, the middle shaft is perpendicular to the material spreading plate, a first bevel gear is arranged on the middle shaft, a second bevel gear is arranged on the transmission shaft, a second bevel gear is arranged on the transmission rod, the first bevel gear is meshed with a bar-shaped rack, a second bevel gear rack is arranged on the rack fixed on the material tray frame, the middle shaft, the upper end of the middle shaft, a bar-shaped transmission rod, and meshed with the rack;
the cleaning box is internally provided with a conveying roller which is driven by a driving motor, the conveying roller is provided with a feeding and conveying mesh belt, one end of a material receiving disc is positioned at the upper part of the feeding and conveying mesh belt, a gas injection network pipe is arranged between the upper belt surface and the lower belt surface of the feeding and conveying mesh belt, gas holes are formed in the gas injection network pipe, the gas injection network pipe is connected with a gas outlet of the gas injection pump through a pipeline, limiting strips are respectively fixed at two sides of the feeding and conveying mesh belt, a separating plate is arranged in the cleaning box, a penetrating groove is formed in the separating plate, a limiting channel is slidably arranged in the penetrating groove, the limiting strips at two sides of the feeding and conveying mesh belt slidably penetrate through the limiting channel, connecting seats are arranged at equal intervals on the side part of the limiting channel, two traction rods are hinged on each connecting seat, mounting grooves are arranged at equal intervals on the inner side wall of the cleaning box, two movable blocks are slidably arranged in each mounting groove, an extrusion spring is arranged between the two movable blocks, and the two traction rods on the same connecting seat are hinged on the two movable blocks in one-to-one mounting groove;
the conveying net belt is characterized in that a first baffle and a second baffle are fixedly mounted on the inner side of a notch of the limiting channel, the conveying net belt penetrates through the first baffle and the second baffle, a buffering wheel is mounted on one side, close to the limiting strip, of the first baffle and the second baffle, and the buffering wheel contacts the limiting strip.
2. The lobster screening and cleaning system as claimed in claim 1, wherein said screen cylinder comprises two support rings and two bone rods, said bone rods are connected between said two support rings, said bone rods are arranged in an annular array with the center of the support rings as the center, said support rings are provided with annular grooves on the outer side, said annular grooves are internally provided with toothed rings, the outer rings of said support wheels are provided with teeth, said support wheels extend into the annular grooves, and the teeth of the outer rings thereof are engaged with the toothed rings.
3. The lobster screening and cleaning system as claimed in claim 1, wherein said receiver is provided with side plates at both sides thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110111747.4A CN112889897B (en) | 2021-01-27 | 2021-01-27 | Lobster screening and cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110111747.4A CN112889897B (en) | 2021-01-27 | 2021-01-27 | Lobster screening and cleaning system |
Publications (2)
| Publication Number | Publication Date |
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| CN112889897A CN112889897A (en) | 2021-06-04 |
| CN112889897B true CN112889897B (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110111747.4A Active CN112889897B (en) | 2021-01-27 | 2021-01-27 | Lobster screening and cleaning system |
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| CN (1) | CN112889897B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001069905A (en) * | 1999-09-06 | 2001-03-21 | Port Relief Engineering Co Ltd | Screening system and screening method |
| US6435959B1 (en) * | 2001-02-22 | 2002-08-20 | Raphael Q. Skrmetta | Assembly for a seafood cleaning machine |
| CN202566151U (en) * | 2012-05-22 | 2012-12-05 | 上虞市晨光食品机械有限公司 | Lobster grader |
| CN107484810A (en) * | 2016-06-13 | 2017-12-19 | 许云飞 | A kind of lobster cleaner |
| CN210213710U (en) * | 2019-05-28 | 2020-03-31 | 后英集团海城市尾矿加工有限公司 | Plate feeder |
| CN210538585U (en) * | 2019-09-04 | 2020-05-19 | 大连海洋大学 | Small-size clam letter sorting belt cleaning device |
| CN211020768U (en) * | 2019-11-19 | 2020-07-17 | 黄梅康宏生态农业发展有限公司 | Pretreatment system before crayfish on-line processing |
| CN111543470B (en) * | 2020-06-30 | 2024-08-06 | 武汉轻工大学 | Lobster belt cleaning device |
| CN111616197B (en) * | 2020-07-07 | 2021-07-30 | 舟山浩睿蓝船舶科技开发有限公司 | Mussel belt cleaning device |
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2021
- 2021-01-27 CN CN202110111747.4A patent/CN112889897B/en active Active
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| CN112889897A (en) | 2021-06-04 |
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