CN108781782B

CN108781782B - Circulating bin

Info

Publication number: CN108781782B
Application number: CN201810574420.9A
Authority: CN
Inventors: 王永; 曹阳; 张洪清; 黄作明; 汤通华; 黄勇
Original assignee: Sichuan Guanghan Jingli Storage Equipment Manufacturing Co ltd
Current assignee: Sichuan Guanghan Jingli Storage Equipment Manufacturing Co ltd
Priority date: 2018-06-06
Filing date: 2018-06-06
Publication date: 2022-07-05
Anticipated expiration: 2038-06-06
Also published as: CN108781782A

Abstract

The embodiment of the invention provides a circulating bin, which comprises: storehouse body, air separator, circulation mechanism. The bin body is used for storing grains and is arranged above the air separator, the first end of the circulating mechanism is arranged at an outlet of the air separator, and the second end of the circulating mechanism is arranged at a top inlet of the bin body. An inlet on the air separator is in butt joint with an outlet at the bottom of the bin body. The air separator is provided with a first fan and a impurity removing opening. The circulating mechanism is provided with a conveying part for conveying the grains from a first end to a second end of the circulating mechanism. The invention can circulate the grain, dry and remove impurities from the grain in the circulation process, and effectively store the grain with high quality for a longer period.

Description

Circulating bin

Technical Field

The invention relates to the field of agricultural machinery, in particular to a circulating bin.

Background

Storage problems are involved after harvesting of the grain. In the grain storage industry, it is common to use grain silos and dry grain before or during storage, for example, a drying silo of patent No. cn201310175789. The defects of the mode are that if the local drying of the grains is not up to standard, local deterioration (excessive local moisture, mildew and the like) is easily generated in the storage process, so that the overall storage quality of the grains is influenced, the value of the grains is seriously influenced, and the long-term high-quality storage of the grains cannot be met.

Disclosure of Invention

The invention aims to provide a circulating bin which can circulate grains, dry and remove impurities from the grains in the circulating process and effectively store the grains with high quality for a longer period.

The embodiment of the invention is realized by the following steps:

a circulation bin comprising: a bin body, a winnowing machine and a circulating mechanism; the bin body is used for storing grains and is arranged above the air separator, the first end of the circulating mechanism is arranged at an outlet of the air separator, and the second end of the circulating mechanism is arranged at a top inlet of the bin body; an inlet on the winnowing machine is butted with an outlet at the bottom of the bin body; the winnowing machine is internally provided with a first fan, and the winnowing machine is provided with a impurity removing port; the circulating mechanism is provided with a conveying part for conveying the grains from a first end to a second end of the circulating mechanism.

Preferably, the method further comprises the following steps: and the second fan is used for blowing air into the bin body and arranged at the bottom of the circulating bin.

Preferably, the air separator comprises: the grain feeding part, the first grain discharging part, the second grain discharging part and the impurity removing structure are arranged on the grain feeding part; the grain inlet part is positioned below an inlet of the winnowing machine, the first grain outlet part is arranged below the grain inlet part, the first fan and the impurity removing structure are respectively arranged on two sides of the first grain outlet part, and the second grain outlet part is positioned above the first fan.

Preferably, the food intake part comprises: the fixed plate, the first switch plate used for discharging the grains out of the circulating bin and the second switch plate used for controlling the falling speed of the grains in the winnowing machine are arranged on the fixed plate; the fixing plate and the first switch plate are obliquely arranged on two sides of the second switch plate.

Preferably, one end of the first switch plate is rotatably arranged at the outlet edge of the bin body, a first connecting rod is fixedly arranged on the side face of the other end of the first switch plate, a second connecting rod is hinged to the first connecting rod, a first rotating shaft is fixedly arranged at one end, far away from the first connecting rod, of the second connecting rod, and the first rotating shaft is rotatably arranged on a shell of the winnowing machine.

Preferably, a side surface of the second switch plate, which is far away from the bin body, is provided with a sawtooth part, a second rotating shaft is arranged below the second switch plate, a first gear part is arranged on the second rotating shaft, and the first gear part is engaged with the sawtooth part.

Preferably, the air separator further comprises: a first screening part, a second screening part and a third screening part; the first screening portion is located the first fan with between the first portion of putting out cereal, the second screening portion is located first portion of putting out cereal keeps away from one side of first screening portion, the third screening portion is close to the second screening portion.

Preferably, be provided with a deep bead in the edulcoration structure, the tip of deep bead is provided with first filter, first filter below is provided with the second filter, second filter below is the impurity removal mouth, the party that is close to first grain portion of impurity removal mouth is provided with arranges miscellaneous groove, the both sides of deep bead are connection entry and air exhaust passageway respectively.

Preferably, the transfer part includes: the device comprises a driving wheel, a conveying belt, a plurality of grain conveying hoppers and grain storage grooves; the conveyer belt is cyclic annular, the conveyer belt cover is established on the rotation portion of drive wheel, and is a plurality of fortune grain fill is fixed to be set up on the lateral surface of conveyer belt, store up grain groove with the export intercommunication of air separator.

Preferably, a fixed rotating wheel is arranged at a position close to the grain storage groove, the conveying belt is sleeved on the fixed rotating wheel, the fixed rotating wheel is connected with an adjusting mechanism, and a cleaning piece for cleaning impurities on the inner side of the conveying belt is arranged above the position close to the fixed rotating wheel.

The beneficial effects of the circulation bin provided by the embodiment of the invention are as follows: in the invention, a bin body is used for storing grains and is arranged above an air separator, and an inlet on the air separator is butted with an outlet at the bottom of the bin body; so that the grains in the bin body can directly fall into the air separator. Meanwhile, a first fan is arranged in the winnowing machine, a impurity removing opening is formed in the winnowing machine, impurities can be removed and air-dried on the grains in the falling process of the grains through wind power generated by the first fan, and impurities in the grains can be discharged through the impurity removing opening. The first end of the circulating mechanism is arranged at an outlet of the winnowing machine, and the second end of the circulating mechanism is arranged at an inlet at the top of the bin body; the circulating mechanism is internally provided with a conveying part for conveying the grains from the first end to the second end of the circulating mechanism, and finally the grains are conveyed back to the granary. The grain in the bin body can be continuously removed with impurities and dried in the air, so that the impurities in the grain are reduced, the grain in the bin body is more uniformly dried, the problem of grain deterioration caused by local moisture or excessive impurities is reduced, and the storage quality and the storage period of the grain are improved.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic diagram of the overall structure of the circulation bin according to the preferred embodiment of the present invention.

FIG. 2 is a schematic view of the internal structure of the circulating bin according to the preferred embodiment of the present invention.

Fig. 3 is a schematic structural view of a connection between an air classifier and a bin body of the circulating bin according to a preferred embodiment of the present invention.

Fig. 4 is an enlarged schematic view of a portion a of fig. 3.

Fig. 5 is a schematic view of the internal structure of the connection between the air classifier and the bin body of the circulating bin according to the preferred embodiment of the present invention.

Fig. 6 is an enlarged schematic view of the structure at B of fig. 5.

Fig. 7 is a schematic view of the bin body, the air classifier and the circulating mechanism of the circulating bin according to the preferred embodiment of the present invention.

Fig. 8 is a schematic diagram of the internal structure of the circulating mechanism of the circulating bin according to the preferred embodiment of the present invention.

Fig. 9 is an enlarged schematic view of fig. 8 at C.

Fig. 10 is an enlarged schematic view of fig. 8 at D.

Icon: 100-circulating bin; 10-a cabin body; 20-a winnowing machine; 30-a circulation mechanism; 101-a cover body; 102-a ring-shaped reinforcing structure; 103-a second fan; 105-a rack; 106-rotating gear; 107-a mounting portion; 200-a grain inlet part; 201-a first fan; 202-impurity removal port; 203-fixing plate; 204-a second switch plate; 205-a first switch plate; 206-a second grain outlet part; 207-a first grain outlet part; 208-a first gear; 209-first connecting rod; 210-a second connecting rod; 211-a first rotation axis; 212-a second rotational axis; 221-wind shield; 222-a first filter plate; 223-a second filter plate; 224-air exhaust duct; 225-impurity removal groove; 231-a first screening section; 232-second screening section; 233-a third screening section; 301-a drive wheel; 302-a conveyor belt; 303-transporting grain hoppers; 304-grain storage groove; 305-a stationary wheel; 306-a cleaning member; 307-an extension; 308-an adjustment mechanism; 309-mounting a base.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present embodiment provides a circulation bin 100, including: the device comprises a bin body 10, a winnowing machine 20, a circulating mechanism 30, a first fan 201 and a second fan 103; the bin body 10 is used for storing grains and is arranged above the air classifier 20, the first end of the circulating mechanism 30 is arranged at an outlet of the air classifier 20, and the second end of the circulating mechanism 30 is arranged at an inlet at the top of the bin body 10.

The bin body 10 is used for storing grains, can be erected on a foundation and is reserved for erecting a certain distance from the ground.

Preferably, the cartridge body 10 is cylindrical, and an annular reinforcing structure 102 can be disposed inside the cartridge body 10, and a plurality of annular reinforcing structures 102 can be connected by metal rods (screw, nut connection), or welded, as shown in fig. 2. The outer shell of the cartridge body 10 is fixed to the annular reinforcing structure 102, which ultimately forms the main structure of the cartridge body 10. In addition, the top of the bin body 10 can be provided with a cover 101, the cover 101 is conical, an opening is formed in the center of the cover 101 for ventilation, and a round rain-shielding cover can be arranged above the opening.

Referring to fig. 3 and 4, the bottom of the bin 10 may be funnel-shaped, which is beneficial for the grain to fall into the air classifier 20, so as to avoid the grain from being accumulated in a dead angle, and the funnel-shaped bottom is an outlet of the bin 10. In order to control the opening and closing of the bin 10, a grain switch may be provided above the outlet of the bin 10. Specifically, the grain switch may be composed of a switch piece, a rack 105, a rotating gear 106, and a mounting portion 107, as shown in fig. 4. The switch sheet is used for closing and opening the outlet of the bin body 10, one end of the rack 105 is fixedly connected to the switch sheet, the other end of the rack 105 is meshed with the rotating gear 106, the rotating gear 106 is rotatably installed on the installation part 107, and the rotating gear 106 can be provided with a handle. The handle is rotated to drive the rotating gear 106, the rack 105 and the switch sheet to move, so as to achieve the purpose of opening and closing the bin body 10.

And the winnowing machine 20 is used for winnowing and removing impurities from the falling grains and simultaneously generating wind power to air-dry the grains.

An inlet on the winnowing machine 20 is butted with an outlet at the bottom of the bin body 10; the air separator 20 is provided with a first fan 201, and the air separator 20 is provided with a impurity removing port 202. Wind power is generated by the first fan 201, impurities in the grains are separated, and the impurities are discharged from the impurity removing port 202.

Referring to fig. 5, in particular, the air classifier 20 of the present embodiment may include: a grain inlet part 200, a first grain outlet part 207, a second grain outlet part 206 and an impurity removing structure; the grain inlet part 200 is located below an inlet of the winnowing machine 20, the first grain outlet part 207 is located below the grain inlet part 200, and the first fan 201 and the impurity removing structure are respectively arranged on two sides of the first grain outlet part 207, and the second grain outlet part 206 is located above the first fan 201. The first grain discharging part 207 is used for circulation of grains, and the second grain discharging part 206 is used for normally discharging grains in the bin body 10.

Wherein, the grain inlet part 200 includes: a fixed plate 203, a first switch plate 205 for discharging the grain out of the circulating bin 100, and a second switch plate 204 for controlling the falling speed of the grain in the air classifier 20. For receiving the grain falling from the bin 10 and controlling the grain direction.

The fixing plate 203 and the first switching plate 205 are obliquely disposed at both sides of the second switching plate 204 to form a funnel shape. Specifically, one end of the first switch plate 205 is rotatably disposed at the outlet edge of the cartridge body 10. A first connecting rod 209 is fixedly arranged on the side surface of the other end of the first switch board 205, a second connecting rod 210 is hinged on the first connecting rod 209, a first rotating shaft 211 is fixedly arranged at one end of the second connecting rod 210 far away from the first connecting rod 209, and the first rotating shaft 211 is rotatably arranged on the shell of the air separator 20, as shown in fig. 6. During operation, the first rotating shaft 211 is adjusted to drive the second connecting rod 210 and the first connecting rod 209 to rotate the first switch board 205 around the hinged position of the first switch board and the outlet edge of the bin body 10, and when the first switch board rotates downwards, grains can be discharged to the second grain discharging part 206, so that the purpose of opening the bin and discharging grains is achieved.

Referring to fig. 6, a side surface of the second switch plate 204 away from the bin body 10 is provided with a saw-tooth portion, a second rotating shaft 212 is provided below the second switch plate 204, the second rotating shaft 212 is provided with a first gear 208, and the first gear 208 is engaged with the saw-tooth portion. The second switch plate 204 can be horizontally displaced by rotating the second rotating shaft 212, so that the purpose of discharging grains into the first grain discharging part 207 for grain circulation is achieved.

In order to achieve better impurity removal effect during the grain circulation process, the winnowing machine 20 may further include: the first screening part 231, the second screening part 232 and the third screening part 233, the first screening part 231 mainly screens out impurities with density and mass larger than those of the grains or deteriorated grains, and the second screening part 232 and the third screening part 233 are used for screening out the unsaturated grains or other impurities. Specifically, the first screening portion 231 is located between the first fan 201 and the first grain discharging portion 207, the second screening portion 232 is located on one side of the first grain discharging portion 207, which is far away from the first screening portion 231, and the third screening portion 233 is close to the second screening portion 232, as shown in fig. 5.

And the impurity removal structure is used for discharging impurities in the grains.

A wind shield 221 is provided in the trash removal structure to guide wind toward the first filter plate 222. The tip of deep bead 221 sets up to first filter 222, first filter 222 below is provided with second filter 223, second filter 223 below is impurity removal mouth 202, the party that is close to first grain portion 207 of impurity removal mouth 202 is provided with row miscellaneous groove 225, the both sides of deep bead 221 are connection entry and air exhaust channel respectively, and the vertical setting of exhaust duct 224 does benefit to impurity whereabouts. The impurities selected by the first and

third screening portions

231 and 233 fall into the impurity discharge groove 225 and are finally discharged through the impurity removal opening 202, as shown in fig. 5.

And a second blower 103 for blowing air into the bin body 10, wherein the second blower 103 is arranged at the bottom of the circulation bin 100. Preferably, the wind blown out of the second fan 103 into the bin 10 can be guided to the central position of the bin 10 through the channel, which facilitates the grains in the bin 10 to receive the wind power of the second fan 103 more uniformly, as shown in fig. 1 and 2.

Referring to fig. 7 and 8, the circulating mechanism 30 is used for circulating the grains discharged from the first grain discharging portion 207 back to the top of the bin body 10, that is, a conveying portion for conveying the grains from the first end to the second end of the circulating mechanism 30 is disposed in the circulating mechanism 30, and the conveying portion is located inside the housing of the circulating mechanism 30.

Preferably, the transfer part includes: a driving wheel 301, a conveyor belt 302, a plurality of grain conveying hoppers 303 and a grain storage groove 304, as shown in fig. 9.

A driving wheel 301 for providing power for the operation of the circulating mechanism 30, wherein the driving wheel 301 can be driven by a driving motor. If the circulating mechanism 30 is vertically disposed, the driving wheel 301 may be disposed at the uppermost end or the lowermost end of the circulating mechanism 30.

The conveyer belt 302 is annular, the conveyer belt 302 is sleeved on the rotating part of the driving wheel 301, the grain conveying hoppers 303 are fixedly arranged on the outer side surface of the conveyer belt 302, and the grain storage groove 304 is communicated with the outlet of the air separator 20. For more stability, a fixed rotating wheel 305 can be arranged at a position close to the grain storage tank 304 (the position of the fixed rotating wheel 305 is adjusted according to the arrangement position of the driving wheel 301, and two ends of the conveying part are ensured to be respectively arranged), the conveying belt 302 is sleeved on the fixed rotating wheel 305, the fixed rotating wheel 305 is connected with an adjusting mechanism 308, and the adjusting mechanism 308 can adjust the longitudinal position of the fixed rotating wheel 305, so that the conveying belt 302 is prevented from slipping on the fixed rotating wheel 305 and cannot be conveyed. Specifically, the adjusting mechanism 308 includes a screw and a mounting base 309, the position of the fixed wheel 305 is moved by the pushing of the screw, and the screw is fixed on the mounting base 309 by a nut, as shown in fig. 10.

In addition, as shown in fig. 10, a cleaning member 306 for cleaning foreign substances inside the conveyor belt 302 is provided near the upper side of the fixed pulley 305. The cleaning member 306 is located on the inner side of the conveyor belt 302, the main body of the cleaning member 306 is of a folded surface structure, the folded angle is upward, the cleaning member 306 is attached to (or close to) the inner side of the conveyor belt 302, and impurities can be scraped off if the inner side of the conveyor belt 302 is provided. At the lower edge of the cleaning member 306, there is a stack of extensions 307, which extensions 307 allow the conveyor belt 302 to be restrained while preventing impurities from falling between the conveyor belt 302 and the stationary wheel 305.

A plurality of grain conveying hoppers 303 for scooping up the grains from the grain storage tank 304.

The grain transporting hopper 303 is similar to the excavator bucket (regardless of the size, the shape is similar), and in a preferred embodiment, a plurality of grain transporting hoppers 303 can be uniformly arranged on the outer side surface of the conveyor belt 302, so that grains can be uniformly conveyed. The grain storage groove 304 is used for caching grains discharged by the first grain discharging portion 207, the bottom of the grain storage groove 304 can be arc-shaped, and grains can be scooped up when the grain conveying hopper 303 does arc-shaped movement.

When the grain is conveyed to the top of the circulating mechanism 30 in the grain conveying hopper 303, the grain conveying hopper 303 moves in an arc shape, namely is toppled out, falls at the bottom of the previous grain conveying hopper 303 to prevent the grain from falling back to the grain storage groove 304 below, and the grain is discharged into a preset channel and enters the bin body 10. The final circulation of the grain is realized.

In addition, it should be noted that, in the present invention, in order to facilitate the activities of the operators, a ladder for climbing and other structures may be erected outside the cabin 10, a rain shielding structure may be provided for rain protection, and such structures are conventional, and those skilled in the art may use the structure without difficulty, which is not described herein in detail.

In summary, the beneficial effects of the circulation bin 100 provided by the embodiment of the present invention are as follows: in the invention, a bin body 10 is used for storing grains and is arranged above an air classifier 20, and an inlet on the air classifier 20 is butted with an outlet at the bottom of the bin body 10; so that the grain in the bin 10 can directly fall down into the air classifier 20. Meanwhile, a first fan 201 is arranged in the winnowing machine 20, a impurity removing opening 202 is formed in the winnowing machine 20, impurities can be removed and air-dried on grains in the falling process of the grains through wind power generated by the first fan 201, and impurities in the grains can be discharged through the impurity removing opening 202. The first end of the circulating mechanism 30 is arranged at the outlet of the air classifier 20, and the second end of the circulating mechanism 30 is arranged at the top inlet of the bin body 10; the circulating mechanism 30 is provided with a conveying part for conveying the grains from a first end to a second end of the circulating mechanism 30, and finally conveying the grains back to the granary. According to the invention, the grain falls into the winnowing machine 20 due to gravity, impurity removal and air drying are achieved by winnowing the grain, then the grain passing through the winnowing machine 20 is conveyed to the inlet at the top of the bin body 10 through the circulating mechanism 30, a grain circulation is formed in the whole process, so that the grain in the bin body 10 moves, the circulated grain can be continuously subjected to impurity removal and air drying, not only are the impurities in the grain reduced, but also the grain in the bin body 10 is more uniformly dried, the problem of grain deterioration caused by local humidity or excessive impurities is reduced, and therefore, the storage quality and the storage period of the grain are improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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

1. A recycling bin, comprising: a bin body, a winnowing machine and a circulating mechanism; the bin body is used for storing grains and is arranged above the air separator, the first end of the circulating mechanism is arranged at an outlet of the air separator, and the second end of the circulating mechanism is arranged at a top inlet of the bin body; an inlet on the winnowing machine is butted with an outlet at the bottom of the bin body; the winnowing machine is internally provided with a first fan, and the winnowing machine is provided with a impurity removing port; the circulating mechanism is internally provided with a conveying part for conveying the grains from a first end to a second end of the circulating mechanism; the air separator includes: the grain feeding part, the first grain discharging part, the second grain discharging part and the impurity removing structure are arranged on the grain feeding part; the grain inlet part is positioned below an inlet of the winnowing machine, the first grain outlet part is arranged below the grain inlet part, the first fan and the impurity removing structure are respectively arranged on two sides of the first grain outlet part, and the second grain outlet part is positioned above the first fan; the grain feeding part comprises: the fixed plate, the first switch plate used for discharging the grains out of the circulating bin and the second switch plate used for controlling the falling speed of the grains in the winnowing machine are arranged on the fixed plate; the fixed plate and the first switch plate are obliquely arranged on two sides of the second switch plate; one end of the first switch plate is rotatably arranged at the outlet edge of the bin body, a first connecting rod is fixedly arranged on the side surface of the other end of the first switch plate, a second connecting rod is hinged to the first connecting rod, a first rotating shaft is fixedly arranged at one end, far away from the first connecting rod, of the second connecting rod, and the first rotating shaft is rotatably arranged on a shell of the winnowing machine;

a sawtooth part is arranged on the side surface of the second switch plate far away from the bin body, a second rotating shaft is arranged below the second switch plate, a first gear part is arranged on the second rotating shaft, and the first gear part is matched with the sawtooth part; the second rotating shaft is used for horizontally displacing the second switch plate after rotating so as to discharge grains to the first grain discharging part for grain circulation; the air separator still includes: a first screening part, a second screening part and a third screening part; the first screening part is positioned between the first fan and the first grain discharging part, the second screening part is positioned on one side of the first grain discharging part far away from the first screening part, and the third screening part is close to the second screening part; the trash removal structure is characterized in that a wind shield is arranged in the trash removal structure, a first filter plate is arranged at the end of the wind shield, a second filter plate is arranged below the first filter plate, a trash removal port is arranged below the second filter plate, a trash removal groove is formed in one side, close to a first grain outlet portion, of the trash removal port, and a connecting inlet and an air exhaust channel are formed in the two sides of the wind shield respectively.

2. The recycling bin of claim 1, further comprising: and the second fan is used for blowing air into the bin body and arranged at the bottom of the circulating bin.

3. The circulation bin of claim 1, wherein the transfer portion comprises: the device comprises a driving wheel, a conveying belt, a plurality of grain conveying hoppers and grain storage grooves; the conveyer belt is cyclic annular, the conveyer belt cover is established on the rotation portion of drive wheel, and is a plurality of fortune grain fill is fixed to be set up on the lateral surface of conveyer belt, store up grain groove with the export intercommunication of air separator.

4. The circulating bin according to claim 3, wherein a fixed rotating wheel is arranged at a position close to the grain storage tank, the conveying belt is sleeved on the fixed rotating wheel, the fixed rotating wheel is connected with an adjusting mechanism, and a cleaning piece for cleaning impurities on the inner side of the conveying belt is arranged above the fixed rotating wheel.