CN214764637U - Feed delivery device for aquaculture - Google Patents

Feed delivery device for aquaculture Download PDF

Info

Publication number
CN214764637U
CN214764637U CN202023214380.9U CN202023214380U CN214764637U CN 214764637 U CN214764637 U CN 214764637U CN 202023214380 U CN202023214380 U CN 202023214380U CN 214764637 U CN214764637 U CN 214764637U
Authority
CN
China
Prior art keywords
feedbox
fixedly connected
inner cavity
rotating rod
fodder
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.)
Expired - Fee Related
Application number
CN202023214380.9U
Other languages
Chinese (zh)
Inventor
韩键宝
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.)
Nanjing Kunmu Organic Agriculture Co Ltd
Original Assignee
Nanjing Kunmu Organic Agriculture 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 Nanjing Kunmu Organic Agriculture Co Ltd filed Critical Nanjing Kunmu Organic Agriculture Co Ltd
Priority to CN202023214380.9U priority Critical patent/CN214764637U/en
Application granted granted Critical
Publication of CN214764637U publication Critical patent/CN214764637U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Landscapes

  • Farming Of Fish And Shellfish (AREA)

Abstract

The utility model discloses a device is put in to fodder for aquaculture, including feedbox and unable adjustment base, unable adjustment base's top fixedly connected with hydraulic cylinder, hydraulic cylinder's top and the bottom fixed connection of feedbox, the top intercommunication of feedbox has the feeder hopper. The utility model discloses a first motor, the cooperation of first bull stick and puddler is with the fodder stirring, avoid the inconvenient circumstances of putting in of fodder caking, the back is accomplished in the stirring, make the fodder get into the bottom of feedbox inner chamber through the pulling baffle, through the second motor, the second bull stick, the third bull stick, first belt pulley, the second belt pulley, driving belt, the even fodder of passing through the discharging pipe with the cooperation of carousel and commentaries on classics board is put in to aquatic, thereby to the even input of fodder, thereby it has increased the scope of fodder input to drive the feedbox upward movement through hydraulic cylinder, it is little and the input inhomogeneous to have solved traditional artifical input fodder scope, thereby the problem of fodder input efficiency has been reduced.

Description

Feed delivery device for aquaculture
Technical Field
The utility model relates to an aquaculture technical field specifically is a device is put in to fodder for aquaculture.
Background
Aquaculture is the production activities of breeding, cultivating and harvesting aquatic animals and plants under artificial control, generally comprises the whole process of cultivating aquatic products from seedlings under artificial breeding management, can also comprise aquatic resource multiplication in a broad sense, and comprises modes of rough cultivation, intensive cultivation, high-density intensive cultivation and the like, wherein the rough cultivation is to put the seedlings in medium and small natural waters, the aquatic products are cultivated completely by natural baits, such as fish cultivation in lakes and reservoirs, shellfish cultivation in shallow seas and the like, the intensive cultivation is to cultivate aquatic products in small water bodies by bait feeding and fertilizing methods, such as pond fish cultivation, net cage fish cultivation, fence cultivation and the like, the high-density intensive cultivation adopts methods of flowing water, temperature control, oxygenation, high-quality bait feeding and the like, and high yield, such as flowing water high-density fish cultivation, shrimps and the like, the traditional feed putting mode is to be put in artificial cultivation, and due to continuous expansion of cultivation scale, the manual feeding mode is time-consuming and labor-consuming, the feed feeding range is small, and the feed feeding is not uniform, so that the labor intensity of the breeding personnel is increased, and the feed feeding efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a device is put in to fodder for aquaculture possesses the advantage of evenly putting in, has solved traditional fodder and has put in the mode and put in for artifical, because the continuation of breeding the scale enlarges, leads to artifical mode of putting in to waste time and energy relatively, and the throw in fodder scope is little and put in inhomogeneously to the intensity of labour who has increased the breeder has just reduced the problem of fodder input efficiency.
In order to achieve the above object, the utility model provides a following technical scheme: a feed feeding device for aquaculture comprises a feed box and a fixed base, wherein the top of the fixed base is fixedly connected with a hydraulic cylinder, the top of the hydraulic cylinder is fixedly connected with the bottom of the feed box, the top of the feed box is communicated with a feed hopper, the two sides of the feed box are communicated with discharge pipes, the right side of the feed box is fixedly connected with a first protection box, the bottom of the inner cavity of the first protection box is fixedly connected with a first motor through a support frame, the output shaft of the first motor is fixedly connected with a first rotating rod, the other end of the first rotating rod penetrates through the feed box, extends to the inner cavity of the feed box and is movably connected with the left side of the inner cavity of the feed box through a bearing, the upper end and the lower end of the first rotating rod, which are positioned on the surface of one end of the inner cavity of the feed box, are fixedly connected with stirring rods, the inner cavity of the feed box is movably connected with a partition board, the back of the feed box is fixedly connected with a second protection box, the left side of the inner cavity of the second protection box is fixedly connected with a second motor, an output shaft of the second motor is fixedly connected with a second rotating rod, the other end of the second rotating rod penetrates through the feedbox, extends to the inner cavity of the feedbox and is movably connected with the positive left side of the inner cavity of the feedbox through a bearing, the right side of the inner cavity of the feedbox is fixedly connected with a third rotating rod through a bearing, the other end of the third rotating rod penetrates through the feedbox, extends to the inner cavity of the feedbox and is movably connected with the positive right side of the inner cavity of the feedbox through a bearing, the surface of one end, positioned at the inner cavity of the second protection box, of the second rotating rod is fixedly connected with a first belt pulley, the surface, positioned at one end of the inner cavity of the second protection box, of the third rotating rod is fixedly connected with a second belt pulley, a transmission belt is connected between the first belt pulley and the second belt pulley, and the front end and the rear end, positioned at one end of the surface of one end of the inner cavity of the feedbox, of the second rotating rod and the third rotating rod are fixedly connected with turntables, the surface of the rotary disc is fixedly connected with a rotary plate.
Preferably, the top of the feed hopper is movably connected with a waterproof cover, and the top of the waterproof cover is fixedly connected with a handle.
Preferably, the equal fixedly connected with gag lever post in front end and the rear end on baffle right side, first spacing groove has all been seted up to the front end and the rear end on feedbox inner chamber right side, the one end that the baffle was kept away from to the gag lever post extends to the inner chamber of first spacing groove and with the inner chamber sliding connection of first spacing groove.
Preferably, the upper end and the equal fixedly connected with stopper of lower extreme of gag lever post, the second spacing groove has all been seted up to the upper end and the lower extreme of first spacing inslot chamber, the one end that the gag lever post was kept away from to the stopper extend to the inner chamber of second spacing groove and with the inner chamber sliding connection of second spacing groove.
Preferably, threaded holes are formed in two sides of the top of the fixing base, and bolts are connected to inner cavities of the threaded holes in a threaded mode.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model puts the feed into the inner cavity of the feed box through the feed hopper, the first motor is started to drive the first rotating rod and the stirring rod to operate to stir the feed evenly to avoid the situation that the feed is blocked and inconvenient to be put in, after the stirring is finished, the feed enters the bottom of the inner cavity of the feed box by pulling the clapboard, the second motor is started to drive the second rotating rod, the third rotating rod, the first belt pulley, the second belt pulley, the driving belt, the rotary disc and the rotary plate to operate evenly to put the feed into the water through the discharge pipe, thereby the feed is evenly put in, the feed box is driven to move upwards through the hydraulic cylinder to enlarge the feed putting range, the problem that the traditional feed putting mode is manual putting is solved, the manual putting mode is time and labor consuming due to the continuous expansion of the breeding scale, the manual putting mode is time and labor consuming, the feed putting range is small and uneven, thereby increasing the labor intensity of the breeding personnel and reducing the feed feeding efficiency.
2. The utility model discloses a set up waterproof cover, played waterproof effect, avoid water to get into the inner chamber of feedbox through the feeder hopper, through setting up gag lever post, first spacing groove, stopper and second spacing groove, played spacing effect to the baffle, through setting up screw hole and bolt, played convenient fixed effect, through setting up the second guard box, played the effect to the protection of second motor, through setting up first guard box, played the effect to the protection of first motor.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the cross-sectional structure of the present invention;
fig. 3 is the utility model discloses feedbox part looks sideways at section structure schematic diagram.
In the figure: 1. a feed bin; 2. a fixed base; 3. a hydraulic cylinder; 4. a feed hopper; 5. a discharge pipe; 6. a first protective box; 7. a first motor; 8. a first rotating lever; 9. a stirring rod; 10. a partition plate; 11. a second protection box; 12. a second motor; 13. a second rotating rod; 14. a third rotating rod; 15. a first pulley; 16. a second pulley; 17. a drive belt; 18. a turntable; 19. rotating the plate; 20. a waterproof cover; 21. a limiting rod; 22. a first limit groove; 23. a limiting block; 24. a second limit groove; 25. a threaded hole; 26. and (4) bolts.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses a feedbox 1, unable adjustment base 2, hydraulic cylinder 3, feeder hopper 4, discharging pipe 5, first guard box 6, first motor 7, first bull stick 8, puddler 9, baffle 10, second guard box 11, second motor 12, second bull stick 13, third bull stick 14, first belt pulley 15, second belt pulley 16, driving belt 17, carousel 18, commentaries on classics board 19, waterproof cover 20, gag lever post 21, first spacing groove 22, stopper 23, second spacing groove 24, screw hole 25 and bolt 26 part are the parts that general standard or technical staff in the field know, its structure and principle all are this technical staff's accessible technical manual or learn through conventional experimental method.
Referring to fig. 1-3, a feed feeding device for aquaculture comprises a feedbox 1 and a fixed base 2, wherein both sides of the top of the fixed base 2 are provided with threaded holes 25, the inner cavity of each threaded hole 25 is in threaded connection with a bolt 26, the top of the fixed base 2 is fixedly connected with a hydraulic cylinder 3, the top of the hydraulic cylinder 3 is fixedly connected with the bottom of the feedbox 1, the top of the feedbox 1 is communicated with a feed hopper 4, the top of the feed hopper 4 is movably connected with a waterproof cover 20, the top of the waterproof cover 20 is fixedly connected with a handle, both sides of the feedbox 1 are communicated with discharge pipes 5, the right side of the feedbox 1 is fixedly connected with a first protection box 6, the bottom of the inner cavity of the first protection box 6 is fixedly connected with a first motor 7 through a support frame, an output shaft of the first motor 7 is fixedly connected with a first rotating rod 8, the other end of the first rotating rod 8 penetrates through the feedbox 1 and extends to the inner cavity of the feedbox 1 and is movably connected with the left side of the inner cavity of the feedbox 1 through a bearing, the upper end and the lower end of the first rotating rod 8 positioned on the surface of one end of the inner cavity of the feedbox 1 are fixedly connected with a stirring rod 9, the inner cavity of the feedbox 1 is movably connected with a baffle 10, the front end and the rear end on the right side of the baffle 10 are fixedly connected with a limiting rod 21, the front end and the rear end on the right side of the inner cavity of the feedbox 1 are respectively provided with a first limiting groove 22, one end of the limiting rod 21 far away from the baffle 10 extends to the inner cavity of the first limiting groove 22 and is in sliding connection with the inner cavity of the first limiting groove 22, the upper end and the lower end of the limiting rod 21 are respectively fixedly connected with a limiting block 23, the upper end and the lower end of the inner cavity of the first limiting groove 22 are respectively provided with a second limiting groove 24, one end of the limiting block 23 far away from the limiting rod 21 extends to the inner cavity of the second limiting groove 24 and is in sliding connection with the inner cavity of the second limiting groove 24, the back of the feedbox 1 is fixedly connected with a second protection box 11, the left side of the inner cavity of the second protection box 11 is fixedly connected with a second motor 12, a second rotating rod 13 is fixedly connected with an output shaft of the second motor 12, the other end of the second rotating rod 13 penetrates through the feedbox 1 and extends to the inner cavity of the feedbox 1 and is movably connected with the left side of the front of the inner cavity of the feedbox 1 through a bearing, a third rotating rod 14 is fixedly connected with the right side of the inner cavity of the feedbox 1 through a bearing, the other end of the third rotating rod 14 penetrates through the feedbox 1 and extends to the inner cavity of the feedbox 1 and is movably connected with the right side of the front of the inner cavity of the feedbox 1 through a bearing, a first belt pulley 15 is fixedly connected with the surface of one end of the inner cavity of the second protection box 11 of the second rotating rod 13, a second belt pulley 16 is fixedly connected with the surface of one end of the inner cavity of the second protection box 11 of the third rotating rod 14, a transmission belt 17 is connected between the first belt pulley 15 and the second belt pulley 16 in a transmission manner, and a rotating disk 18 is fixedly connected with the front end and the rear end of one end of the inner cavity of the second rotating rod 13 and the third rotating rod 14, the surface of the rotary table 18 is fixedly connected with rotary plates 19, feed is put into an inner cavity of the feed box 1 through the feed hopper 4, the first motor 7 is started, the first motor 7 drives the first rotary rod 8 and the stirring rod 9 to operate to stir the feed uniformly, the condition that the feed is not convenient to be put in due to caking is avoided, after the stirring is finished, the feed enters the bottom of the inner cavity of the feed box 1 through pulling the partition plate 10, the feed is put into the water through the discharge pipe 5 by starting the second motor 12, the second motor 12 drives the second rotary rod 13, the third rotary rod 14, the first belt pulley 15, the second belt pulley 16, the transmission belt 17, the rotary table 18 and the rotary plates 19 to operate uniformly, the feed is put in uniformly, the feed putting range is enlarged by driving the feed box 1 to move upwards through the hydraulic cylinder 3, the problem that the traditional feed putting mode is manual putting is solved, and the cultivation scale is continuously enlarged, the manual feeding mode is time-consuming and labor-consuming, the feed feeding range is small, and the feed feeding is not uniform, so that the labor intensity of the breeding personnel is increased, and the feed feeding efficiency is reduced.
When the feed box is used, the electric elements are started through the external controller, feed is placed into the inner cavity of the feed box 1 through the feed hopper 4, the first motor 7 is started, the output shaft of the first motor 7 drives the first rotating rod 8 to rotate, the first rotating rod 8 drives the stirring rod 9 to rotate, so that the feed is uniformly stirred, the situation that the feed is not conveniently thrown in due to feed agglomeration is avoided, the partition plate 10 is pulled after the stirring is finished, the partition plate 10 is separated from the inner cavity of the feed box 1, so that the stirred feed enters the bottom of the inner cavity of the feed box 1, the second rotating rod 13 is driven to rotate by the output shaft of the second motor 12 after the stirring is finished, the first belt pulley 15 is driven to rotate by the second belt pulley 15 through the transmission belt 17, the third rotating rod 14 is driven to rotate by the second belt pulley 16, the rotary disk 18 is driven to rotate by the rotation of the second rotating rod 13 and the third rotating rod 14, carousel 18 drives changes board 19 and rotates, the rotation through changeing board 19 drives the fodder and passes through discharging pipe 5 even input to aquatic, through opening hydraulic cylinder 3, hydraulic cylinder 3 drives 1 up motion of feedbox, thereby the scope of fodder input has been increased, it is artifical the input to have solved traditional fodder input mode, because the continuous expansion of breed scale, lead to artifical input mode to waste time and energy more, input fodder scope is little and input inhomogeneously, thereby the problem of breed personnel's intensity of labour and reduced fodder input efficiency has been increased.
The standard parts used in the present application document can be purchased from the market, and can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts the conventional means of mature bolt, rivet, welding and the like in the prior art, the machines, parts and equipment adopt the conventional models in the prior art, the control mode is automatically controlled by a controller, the control circuit of the controller can be realized by simple programming of technicians in the field, the control circuit belongs to the common knowledge in the field, and the present application document is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the present application.
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 (5)

1. The utility model provides a device is put in to fodder for aquaculture, includes feedbox (1) and unable adjustment base (2), its characterized in that: the feeding device is characterized in that a hydraulic cylinder (3) is fixedly connected to the top of the fixed base (2), the top of the hydraulic cylinder (3) is fixedly connected with the bottom of a feedbox (1), the top of the feedbox (1) is communicated with a feeding hopper (4), two sides of the feedbox (1) are both communicated with a discharging pipe (5), a first protection box (6) is fixedly connected to the right side of the feedbox (1), a first motor (7) is fixedly connected to the bottom of an inner cavity of the first protection box (6) through a supporting frame, a first rotating rod (8) is fixedly connected to an output shaft of the first motor (7), the other end of the first rotating rod (8) penetrates through the feedbox (1) and extends to the inner cavity of the feedbox (1) and is movably connected with the left side of the inner cavity of the feedbox (1) through a bearing, the upper end and the lower end of the first rotating rod (8) which are located on the surface of one end of the inner cavity of the feedbox (1) are both fixedly connected with a stirring rod (9), the inner cavity of the feedbox (1) is movably connected with a partition plate (10), the back of the feedbox (1) is fixedly connected with a second protection box (11), the left side of the inner cavity of the second protection box (11) is fixedly connected with a second motor (12), the output shaft of the second motor (12) is fixedly connected with a second rotating rod (13), the other end of the second rotating rod (13) penetrates through the feedbox (1), extends to the inner cavity of the feedbox (1) and is movably connected with the positive left side of the inner cavity of the feedbox (1) through a bearing, the right side of the inner cavity of the feedbox (1) is fixedly connected with a third rotating rod (14) through a bearing, the other end of the third rotating rod (14) penetrates through the feedbox (1), extends to the inner cavity of the feedbox (1) and is movably connected with the positive right side of the inner cavity of the feedbox (1) through a bearing, the surface of the second rotating rod (13) positioned at one end of the inner cavity of the second protection box (11) is fixedly connected with a first belt pulley (15), third bull stick (14) are located fixed surface of second guard box (11) inner chamber one end and are connected with second belt pulley (16), the transmission is connected with driving belt (17) between first belt pulley (15) and second belt pulley (16), second bull stick (13) and third bull stick (14) are located the equal fixedly connected with carousel (18) in front end and the rear end on feedbox (1) inner chamber one end surface, the equal fixedly connected with commentaries on classics board (19) in surface of carousel (18).
2. The feed delivery device for aquaculture of claim 1, wherein: the top swing joint of feeder hopper (4) has waterproof cover (20), the top fixedly connected with handle of waterproof cover (20).
3. The feed delivery device for aquaculture of claim 1, wherein: the equal fixedly connected with gag lever post (21) of front end and rear end on baffle (10) right side, first spacing groove (22) have all been seted up to the front end and the rear end on feedbox (1) inner chamber right side, the one end that baffle (10) were kept away from in gag lever post (21) extends to the inner chamber of first spacing groove (22) and with the inner chamber sliding connection of first spacing groove (22).
4. The feed delivery device for aquaculture of claim 3, wherein: the upper end and the equal fixedly connected with stopper (23) of lower extreme of gag lever post (21), second spacing groove (24) have all been seted up to the upper end and the lower extreme of first spacing groove (22) inner chamber, stopper (23) keep away from the one end of gag lever post (21) extend to the inner chamber of second spacing groove (24) and with the inner chamber sliding connection of second spacing groove (24).
5. The feed delivery device for aquaculture of claim 1, wherein: threaded holes (25) are formed in two sides of the top of the fixing base (2), and bolts (26) are connected to inner cavities of the threaded holes (25) in a threaded mode.
CN202023214380.9U 2020-12-28 2020-12-28 Feed delivery device for aquaculture Expired - Fee Related CN214764637U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023214380.9U CN214764637U (en) 2020-12-28 2020-12-28 Feed delivery device for aquaculture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023214380.9U CN214764637U (en) 2020-12-28 2020-12-28 Feed delivery device for aquaculture

Publications (1)

Publication Number Publication Date
CN214764637U true CN214764637U (en) 2021-11-19

Family

ID=78721967

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023214380.9U Expired - Fee Related CN214764637U (en) 2020-12-28 2020-12-28 Feed delivery device for aquaculture

Country Status (1)

Country Link
CN (1) CN214764637U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114246151A (en) * 2021-12-14 2022-03-29 高雅 Feed delivery device for aquaculture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114246151A (en) * 2021-12-14 2022-03-29 高雅 Feed delivery device for aquaculture

Similar Documents

Publication Publication Date Title
CN209768721U (en) Bird repelling equipment for aquaculture
CN108401957A (en) A kind of automatic charging feeding device used for aquiculture
CN108077144A (en) A kind of feedstuff feeding fishing boat used for aquiculture
CN216254750U (en) Aquaculture is with throwing edible device
CN214764637U (en) Feed delivery device for aquaculture
CN210143586U (en) Shrimp breeding device that can throw material automatically
CN204670136U (en) A kind of aquaculture distributing charging device
CN209299993U (en) A kind of aquaculture device
CN108834986B (en) Aquaculture throws edible device on a large scale
CN208300717U (en) A kind of aquaculture device for feeding easy to use
CN212014124U (en) Aquaculture is with throwing material device
CN206866382U (en) Can automatic feeding aquaculture tank
CN204670159U (en) A kind of aquaculture automatic sewage discharging device
CN207720966U (en) A kind of feed spraying device that aquaculture is easy to use
CN207940228U (en) A kind of aquaculture distributing charging device
CN207022927U (en) A kind of material-strewing device for aquaculture
CN211864654U (en) Feeding device for fishery breeding
CN108849673B (en) Foodstuff processing and scattering integrated automatic treatment equipment for aquaculture
CN211581212U (en) Feeding device for aquaculture
CN210406707U (en) Novel aquaculture device
CN220174174U (en) Lifting type cultivation net cage
CN208159815U (en) A kind of aquatic feeds feed device automatically
CN207911780U (en) A kind of material-strewing device for aquaculture
CN112021232A (en) Device is thrown and spills to fodder for aquaculture
CN207167438U (en) A kind of feeding device used for aquiculture

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20211119