CN112896849A - Higher rubbish recovery unit of practicality based on information technology of new generation - Google Patents

Higher rubbish recovery unit of practicality based on information technology of new generation Download PDF

Info

Publication number
CN112896849A
CN112896849A CN202110111543.0A CN202110111543A CN112896849A CN 112896849 A CN112896849 A CN 112896849A CN 202110111543 A CN202110111543 A CN 202110111543A CN 112896849 A CN112896849 A CN 112896849A
Authority
CN
China
Prior art keywords
fixedly connected
spring
information technology
new generation
rubbish
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202110111543.0A
Other languages
Chinese (zh)
Inventor
唐静
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Xinghuo Information Technology Co ltd
Original Assignee
Guangzhou Xinghuo Information Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Xinghuo Information Technology Co ltd filed Critical Guangzhou Xinghuo Information Technology Co ltd
Priority to CN202110111543.0A priority Critical patent/CN112896849A/en
Publication of CN112896849A publication Critical patent/CN112896849A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00Refuse receptacles; Accessories therefor
    • B65F1/04Refuse receptacles; Accessories therefor with removable inserts
    • B65F1/06Refuse receptacles; Accessories therefor with removable inserts with flexible inserts, e.g. bags or sacks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00Refuse receptacles; Accessories therefor
    • B65F1/14Other constructional features; Accessories
    • B65F1/1405Compressing means incorporated in, or specially adapted for, refuse receptacles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F7/00Cleaning or disinfecting devices combined with refuse receptacles or refuse vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F2210/00Equipment of refuse receptacles
    • B65F2210/162Pressing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to the technical field of related equipment of a new generation of information technology, and discloses a garbage recycling device with higher practicability based on the new generation of information technology, which comprises a box body, wherein the inside of the box body is fixedly connected with a shell, the inside of the shell is movably connected with a rotating shaft, the outside of the rotating shaft is fixedly connected with a chain wheel, and the outside of the chain wheel is meshed with a chain; through the pivot, the sprocket, the chain, the lifter plate, the connecting rod, the clamp plate, monitoring the interact between the subassembly, can pile up rubbish in the disposal bag and carry out the precompression to the rubbish in the disposal bag automatically when a definite position height, thereby make and place more rubbish in the disposal bag, avoided rubbish comparatively fluffy to lead to only placing the condition emergence that a small amount of rubbish will spill over in the disposal bag, thereby can carry out make full use of to the disposal bag, can also avoid sanitation workman to change the condition that the disposal bag untimely leads to rubbish to spilling over to take place simultaneously.

Description

Higher rubbish recovery unit of practicality based on information technology of new generation
Technical Field
The invention relates to the technical field of related equipment of a new generation of information technology, in particular to a garbage recycling device with higher practicability based on the new generation of information technology.
Background
The new generation of information technology is one of seven strategically emerging industries, which are mainly divided into six aspects: the system comprises a next-generation communication network, an Internet of things, three-network integration, novel flat panel display, a high-performance integrated circuit and cloud computing.
Along with the continuous progress of science and technology, internet of things is gradually applied to the dustbin, so that the dustbin is more convenient to use. The existing dustbin does not have the function of compressing garbage, in the use process, some garbage is expanded, for example, food packaging bags and the like are thrown into the dustbin, so that the garbage can occupy a large space, the garbage can in the dustbin overflows when not placing enough garbage, so that the garbage can cannot be fully utilized, the resource waste is further caused, meanwhile, the garbage overflows and can pollute the environment around the dustbin, and therefore the dustbin has certain limitation in the use function.
Therefore, in order to solve these problems, a garbage collection device based on a new generation of information technology with high practicability is needed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a garbage recycling device with higher practicability based on a new generation information technology, which has the advantages of being capable of compressing garbage in a garbage can and collecting peculiar smell gas generated in the compression process, and solves the problem that the garbage overflows to pollute the environment because the existing garbage can not preliminarily compress the garbage in the garbage can.
(II) technical scheme
In order to achieve the purpose of compressing the garbage in the garbage can and collecting the odor gas generated in the compression process, the invention provides the following technical scheme: the utility model provides a higher rubbish recovery unit of practicality based on new generation information technology, the power distribution box comprises a box body, the inside fixedly connected with shell of box, the inside swing joint of shell has the pivot, the outside fixedly connected with sprocket of pivot, the outside meshing of sprocket has the chain, the outside fixedly connected with lifter plate of chain, the outside swing joint of lifter plate has the connecting rod, the bottom fixedly connected with clamp plate of connecting rod, the inlet port has been seted up on the surface of clamp plate, the inside swing joint of lifter plate has the control assembly, the inside swing joint of box has the monitoring subassembly, the inside fixedly connected with gas collection box of box, the top fixedly connected with gasbag of gas collection box, the inside fixedly connected with electro-magnet of gas collection box, the outside fixedly connected with spring of electro-magnet is first, the outside fixedly connected with closing plate of spring is first.
Preferably, the outside fixedly connected with nose bar of chain, nose bar and lifter plate fixed connection, the outside fixedly connected with spiral spring of sprocket, spiral spring and box fixed connection can drive the clamp plate automatically and reset after the compression is accomplished.
Preferably, control assembly mainly comprises depression bar, spring two, the bar copper, the N utmost point, the S utmost point, the set casing, spring three is constituteed, the inside fixedly connected with set casing of lifter plate, the inside fixedly connected with N utmost point of set casing, the inside fixedly connected with S utmost point of set casing, the inside fixedly connected with spring two of set casing, two bottom fixedly connected with depression bars of spring, the top fixedly connected with insulator spindle of depression bar, the top fixedly connected with bar copper of insulator spindle, the position of bar copper, the specification all matches with the N utmost point, the S utmost point, the inside fixedly connected with spring three of lifter plate, spring three and connecting rod swing joint, can control the compression degree of rubbish.
Preferably, the inside swing joint of box has spring four, and spring four's top fixedly connected with fixed block, the top activity of fixed block is pegged graft there are the briquetting, and the quantity of briquetting is two, and the bottom swing joint of briquetting has the disposal bag, fixed block and box sliding connection, and the surface of briquetting is seted up and is pressed the laminating groove, and the position of laminating groove, specification all match with the clamp plate.
Preferably, the monitoring component mainly comprises shading shell, photo resistance, light trap, shot-light, and the inside fixedly connected with shading shell of a briquetting, the light trap has been seted up on the surface of shading shell, the inside fixedly connected with photo resistance of shading shell, the inside fixedly connected with shot-light of another briquetting, the position, the specification of shot-light all with the light trap phase-match.
Preferably, the position and the specification of the air inlet are matched with the telescopic air pipe, the bottom of the air bag is fixedly connected with an air suction pipe, the outer part of the air collection box is fixedly connected with an air inlet pipe, the position and the specification of the air inlet pipe are matched with the telescopic air pipe, the specification and the position of the sealing plate are matched with the air suction pipe and the air inlet pipe, and the sealing plate is connected with the air collection box in a sliding mode.
Preferably, the rotating shaft, the electromagnet, the copper bar, the external power supply and the driving power supply are all electrically connected with the control center, the rotating shaft is electrically connected with the driving power supply, and the electromagnet is electrically connected with the external power supply.
(III) advantageous effects
Compared with the prior art, the invention provides a garbage recycling device with higher practicability based on a new generation information technology, which has the following beneficial effects:
1. this higher rubbish recovery unit of practicality based on new generation information technology, through the pivot, the sprocket, the chain, the lifter plate, the connecting rod, the clamp plate, monitoring interaction between the subassembly, can pile up the rubbish in the disposal bag and carry out the precompression processing to the rubbish in the disposal bag when a definite position height, thereby make place more rubbish in the disposal bag, avoided comparatively fluffy condition emergence that only places a small amount of rubbish and will spill over in leading to the disposal bag of rubbish, thereby can carry out make full use of to the disposal bag, can also avoid sanitation workman to change the condition that the disposal bag untimely leads to rubbish to spilling over to take place simultaneously.
2. This higher rubbish recovery unit of practicality based on new generation information technology, through gas collection box, gasbag, inlet port, flexible tuber pipe, electro-magnet, spring one, the interact between the closing plate, can carry out temporary accomodating to the peculiar smell gas that produces when rubbish is compressed, make the peculiar smell that rubbish produced spill over from the device is inside to lead to the condition emergence of producing the pollution to the environment around the garbage bin when having avoided rubbish compression to make the dustbin can satisfy the needs of in-service use.
Drawings
FIG. 1 is a schematic view of the present invention in partial cross section;
FIG. 2 is a schematic view of a connection structure of a portion of the structure shown in FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;
FIG. 4 is a schematic view of the internal structure of the briquette according to the present invention.
In the figure: 1. a box body; 2. a housing; 3. a rotating shaft; 4. a sprocket; 5. a chain; 6. a lifting plate; 7. a connecting rod; 8. pressing a plate; 9. an air inlet; 10. a control component; 11. a monitoring component; 12. a gas collection box; 13. an air bag; 14. an electromagnet; 15. a first spring; 16. a sealing plate; 17. a telescopic air pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a garbage recycling device with high practicability based on a new generation of information technology comprises a box body 1, wherein the inside of the box body 1 is movably connected with a spring four, the top of the spring four is fixedly connected with a fixed block, the top of the fixed block is movably inserted with two pressing blocks, the bottom of each pressing block is movably connected with a garbage bag, the fixed block is connected with the box body 1 in a sliding manner, the surface of each pressing block is provided with a pressing groove, the position and the specification of each pressing groove are matched with a pressing plate 8, the inside of the box body 1 is fixedly connected with a shell 2, the inside of the shell 2 is movably connected with a rotating shaft 3, the outside of the rotating shaft 3 is fixedly connected with a chain wheel 4, the outside of the chain wheel 4 is engaged with a chain 5, the outside of the chain 5 is fixedly connected with a lifting plate 6, the, the outside fixedly connected with nose bar of chain 5, nose bar and lifter plate 6 fixed connection, the outside fixedly connected with volute spiral spring of sprocket 4, volute spiral spring and 1 fixed connection of box can automatically drive clamp plate 8 after the compression is accomplished and reset.
An air inlet 9 is formed in the surface of the pressing plate 8, a control assembly 10 is movably connected inside the lifting plate 6, the control assembly 10 mainly comprises a pressing rod, a second spring, a copper rod, an N pole, an S pole, a fixed shell and a third spring, the fixed shell is fixedly connected inside the lifting plate 6, the N pole is fixedly connected inside the fixed shell, the S pole is fixedly connected inside the fixed shell, a second spring is fixedly connected inside the fixed shell, a pressing rod is fixedly connected to the bottom of the second spring, an insulating rod is fixedly connected to the top of the pressing rod, a copper rod is fixedly connected to the top of the insulating rod, the position and the specification of the copper rod are matched with the N pole and the S pole, a third spring is fixedly connected inside the lifting plate 6 and movably connected with a connecting rod 7, the compression degree of garbage can be controlled, a monitoring assembly 11 is movably connected inside the box body 1, and the monitoring assembly 11 mainly comprises a, The utility model discloses a light-sensitive resistor, light trap, shot-light are constituteed, and the light trap has been seted up on the surface of the inside fixedly connected with shading shell of a briquetting, shading shell's inside fixedly connected with light-sensitive resistor, the inside fixedly connected with shot-light of another briquetting, the position, the specification of shot-light all with the light trap phase-match.
The inside of the box body 1 is fixedly connected with a gas collection box 12, the top of the gas collection box 12 is fixedly connected with an air bag 13, in an initial state, the inside of the air bag 13 is in a negative pressure state, the inside of the gas collection box 12 is fixedly connected with an electromagnet 14, a rotating shaft 3, the electromagnet 14, a copper bar, an external power supply and a driving power supply are all electrically connected with a control center, the rotating shaft 3 is electrically connected with the driving power supply, the electromagnet 14 is electrically connected with the external power supply, the outside of the electromagnet 14 is fixedly connected with a spring I15, the elasticity coefficient value of the spring I15 is greater than the elasticity coefficient value of a spring IV, the outside of the spring I15 is fixedly connected with a sealing plate 16, the sealing plate 16 is made of a metal iron material, the inside of the box body 1 is fixedly connected with a telescopic air pipe 17, the position and specification of the air inlet pipe are matched with the telescopic air pipe 17, the specification and position of the sealing plate 16 are matched with the air suction pipe and the air inlet pipe, and the sealing plate 16 is connected with the air collection box 12 in a sliding mode.
The working principle is as follows: when garbage is accumulated to the extent that light emitted by a spotlight can be shielded, the intensity of light received by a photoresistor is reduced, the resistance value is increased, and the passing current is reduced, so that a control center controls a driving power supply to drive a rotating shaft 3 to rotate, and simultaneously controls an external power supply to energize an electromagnet 14, the rotating shaft 3 rotates to drive a chain wheel 4 to rotate, the chain wheel 4 rotates to drive a volute spring to rotate and compress, the chain wheel 4 rotates to drive a chain 5 to rotate, the chain 5 rotates to drive a convex rod to move, the convex rod moves to drive a lifting plate 6 to move, the lifting plate 6 moves to drive a connecting rod 7 to move, the connecting rod 7 moves to drive a pressing plate 8 to move downwards, when the pressing plate 8 moves to be in contact with a pressing block, the pressing plate 8 is in sliding connection with a pressing groove, the pressing plate 8 continues to move downwards to drive the pressing block to, the fixed block moves down and can compress spring four, can compress the rubbish in the disposal bag when clamp plate 8 moves down, and the peculiar smell gas in the in-process disposal bag of clamp plate 8 downward movement can enter into the inside of flexible tuber pipe 17 from inlet port 9, and flexible tuber pipe 17 stretches along with the removal of clamp plate 8.
After the electromagnet 14 is electrified, magnetism is generated to attract the sealing plate 16 to drive the sealing plate 16 to move and separate from the air inlet pipe and the air suction pipe, the spring 15 is compressed in the moving process of the sealing plate 16, at the moment, odor gas in the telescopic air pipe 17 can sequentially pass through the air inlet pipe and the air suction pipe to enter the air bag 13 under the action of the suction force of the air bag 13, so that odor gas generated in the compression of garbage can be collected and treated, when the garbage is compressed to a certain degree, the pressing plate 8 cannot move continuously, at the moment, the lifting plate 6 moves to drive the connecting rod 7 and the lifting plate 6 to move relatively, the connecting rod 7 can contact with the pressing rod and drive the pressing rod to move in the moving process, the pressing rod moves to drive the insulating rod to move, the insulating rod moves to drive the copper rod to move, and when the copper rod moves to cut a magnetic induction line between an N, the control center controls the driving power supply to stop driving the rotating shaft 3 to rotate, and controls the external power supply to stop energizing the electromagnet 14, after the rotating shaft 3 stops rotating, the pressing plate 8 moves upwards to reset under the action of resilience force of the volute spiral spring, the electromagnet 14 loses magnetism after being powered off, and at the moment, under the action of the resilience force of the first spring 15, the sealing plate 16 moves to reset to continue to seal the air inlet pipe and the air suction pipe.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a higher rubbish recovery unit of practicality based on new generation information technology, includes box (1), its characterized in that: the inner part of the box body (1) is fixedly connected with a shell (2), the inner part of the shell (2) is movably connected with a rotating shaft (3), the outer part of the rotating shaft (3) is fixedly connected with a chain wheel (4), the outer part of the chain wheel (4) is meshed with a chain (5), the outer part of the chain (5) is fixedly connected with a lifting plate (6), the outer part of the lifting plate (6) is movably connected with a connecting rod (7), the bottom of the connecting rod (7) is fixedly connected with a pressing plate (8), the surface of the pressing plate (8) is provided with an air inlet hole (9), the inner part of the lifting plate (6) is movably connected with a control component (10), the inner part of the box body (1) is movably connected with a monitoring component (11), the inner part of the box body (1) is fixedly connected with a gas collecting box (12), the, the outer portion of the electromagnet (14) is fixedly connected with a first spring (15), the outer portion of the first spring (15) is fixedly connected with a sealing plate (16), and the inner portion of the box body (1) is fixedly connected with a telescopic air pipe (17).
2. The garbage collection device with high practicability based on the new generation information technology according to claim 1, wherein: the outer fixed connection of chain (5) has the protruding pole, protruding pole and lifter plate (6) fixed connection, and the outer fixed connection of sprocket (4) has the spiral spring, spiral spring and box (1) fixed connection.
3. The garbage collection device with high practicability based on the new generation information technology according to claim 1, wherein: control assembly (10) mainly by the depression bar, spring two, the bar copper, the N utmost point, the S utmost point, the set casing, three constitutions of spring, the inside fixedly connected with set casing of lifter plate (6), the inside fixedly connected with N utmost point of set casing, the inside fixedly connected with S utmost point of set casing, the inside fixedly connected with spring two of set casing, two bottom fixedly connected with depression bars of spring, the top fixedly connected with insulator spindle of depression bar, the top fixedly connected with bar copper of insulator spindle, the position of bar copper, the specification all with the N utmost point, the S utmost point matches, the inside fixedly connected with spring three of lifter plate (6), spring three and connecting rod (7) swing joint.
4. The garbage collection device with high practicability based on the new generation information technology according to claim 1, wherein: the inside swing joint of box (1) has spring four, and spring four's top fixedly connected with fixed block, the top activity of fixed block are pegged graft and are had the briquetting, and the quantity of briquetting is two, and the bottom swing joint of briquetting has the disposal bag, fixed block and box (1) sliding connection, and the surface of briquetting is seted up and is had the pressfitting groove, and the position in pressfitting groove, specification all match with clamp plate (8).
5. The garbage collection device with high practicability based on the new generation information technology according to claim 1, wherein: monitoring subassembly (11) mainly comprise shading shell, photo resistance, light trap, shot-light, and the light trap has been seted up on the surface of shading shell to the inside fixedly connected with shading shell of a briquetting, shading shell's inside fixedly connected with photo resistance, the inside fixedly connected with shot-light of another briquetting, and the position, the specification of shot-light all match with the light trap.
6. The garbage collection device with high practicability based on the new generation information technology according to claim 1, wherein: the position and the specification of the air inlet hole (9) are matched with the telescopic air pipe (17), the bottom of the air bag (13) is fixedly connected with an air suction pipe, the outer portion of the air collection box (12) is fixedly connected with an air inlet pipe, the position and the specification of the air inlet pipe are matched with the telescopic air pipe (17), the specification and the position of the sealing plate (16) are matched with the air suction pipe and the air inlet pipe, and the sealing plate (16) is connected with the air collection box (12) in a sliding mode.
7. The garbage collection device with high practicability based on the new generation information technology according to claim 1, wherein: the rotating shaft (3), the electromagnet (14), the copper bar, the external power supply and the driving power supply are all electrically connected with the control center, the rotating shaft (3) is electrically connected with the driving power supply, and the electromagnet (14) is electrically connected with the external power supply.
CN202110111543.0A 2021-01-27 2021-01-27 Higher rubbish recovery unit of practicality based on information technology of new generation Withdrawn CN112896849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110111543.0A CN112896849A (en) 2021-01-27 2021-01-27 Higher rubbish recovery unit of practicality based on information technology of new generation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110111543.0A CN112896849A (en) 2021-01-27 2021-01-27 Higher rubbish recovery unit of practicality based on information technology of new generation

Publications (1)

Publication Number Publication Date
CN112896849A true CN112896849A (en) 2021-06-04

Family

ID=76120627

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110111543.0A Withdrawn CN112896849A (en) 2021-01-27 2021-01-27 Higher rubbish recovery unit of practicality based on information technology of new generation

Country Status (1)

Country Link
CN (1) CN112896849A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114212416A (en) * 2021-12-17 2022-03-22 徐州美创人力资源有限公司 Domestic waste compressor arrangement for household garbage bin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114212416A (en) * 2021-12-17 2022-03-22 徐州美创人力资源有限公司 Domestic waste compressor arrangement for household garbage bin

Similar Documents

Publication Publication Date Title
CN108861188B (en) Intelligent garbage classification and recovery robot
CN205761370U (en) A kind of novel dustbin
CN111703762A (en) Many functions of intelligence automatic classification dustbin
CN112896849A (en) Higher rubbish recovery unit of practicality based on information technology of new generation
CN104909087A (en) Intelligent trash recycling device
CN110292330A (en) A kind of building waste automatic collecting device
CN206857464U (en) A kind of intelligent garbage bin
CN211618883U (en) Intelligent garbage classification treatment device
CN111715554A (en) Intelligent garbage classification device
CN114919895B (en) Automatic categorised garbage collection smart machine
CN113023180B (en) Intelligent garbage can and working method thereof
CN214731624U (en) Intelligent garbage can
CN214978322U (en) Mechanism for reflow soldering of lubricating oil
CN207827073U (en) Automatic packaging dustbin
CN210028755U (en) Compression type garbage can
CN207158025U (en) A kind of solar energy side compression type automatic dustbin
CN218318716U (en) Intelligent garbage station capable of automatically identifying garbage types
CN208879319U (en) A kind of gas drainage device for consumer waste filling and embedding
CN112830127A (en) Intelligent integrated garbage can capable of collecting takeaway garbage in classified mode
CN208054193U (en) A kind of stationery production waste material collection device
CN112455971A (en) Multi-functional battery recovery unit of environmental protection
CN207191999U (en) A kind of garbage reclamation room with classified storage function
CN112173494A (en) Automatic dustbin compression device based on wisdom campus networked control
CN205891782U (en) Intelligent dustbin
CN208307629U (en) A kind of platform feeding refuse compaction equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20210604