CN110694900B

CN110694900B - Impurity removal drying device and drying method for agricultural grains

Info

Publication number: CN110694900B
Application number: CN201910982918.3A
Authority: CN
Inventors: 王朝红
Original assignee: Hangzhou Yingdong Technology Co Ltd
Current assignee: Zodanli Health Industry Group Co.,Ltd.
Priority date: 2018-05-23
Filing date: 2018-05-23
Publication date: 2020-12-01
Anticipated expiration: 2038-05-23
Also published as: CN110694900A; CN108655002B; CN108655002A

Abstract

The invention discloses an impurity removing and drying device and an impurity removing and drying method for agricultural grains, wherein the drying device comprises a shell and a movable base, the bottom of the shell is fixedly connected to the upper surface of the movable base, and a material guide cylinder is fixedly connected to a feed inlet on the left side of the top of the shell. According to the invention, the problem of low grain treatment efficiency of the existing agricultural grain treatment device is solved by arranging the shell, the movable base, the guide cylinder, the impurity removal device, the fan, the partition plate, the drying device, the guide plate, the vibration exciter and the conveying device to be matched with each other, the problem of inconvenience in impurity cleaning of the existing agricultural grain impurity removal drying device is solved by arranging the impurity removal device, the guide cylinder and the partition plate to be matched with each other, the problem of inconvenience in drying of grain accumulation in the existing agricultural grain treatment device is solved by arranging the partition plate, the guide plate and the vibration exciter to be matched with each other, and the problem of low drying efficiency of the existing agricultural grain treatment device is solved by arranging the fan and the drying device to be matched.

Description

Impurity removal drying device and drying method for agricultural grains

The application is a divisional application of an impurity removing and drying device for agricultural grains, wherein the application date is 2018, 05, 23 and the application number is CN 201810498992.3.

Technical Field

The invention relates to the technical field of agricultural mechanical equipment, in particular to an impurity removing and drying device and method for agricultural grains.

Background

In the season of cereal results, the peasant generally uses the harvester to thresh the cereal and smash, greatly reduced peasant's intensity of labour, but the cereal that the harvester was reaped, general impurity is more, and the humidity is great in the cereal, can not directly store, need carry out sunning and edulcoration and just can store, but the cereal processing apparatus that current agricultural cereal was used need carry out edulcoration and stoving substep processing to the cereal, can not carry out quick effectual stoving edulcoration to the cereal, the efficiency of cereal processing has been reduced, increase peasant's intensity of labour.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an impurity removal and drying device for agricultural grains, which solves the problem of low grain treatment efficiency of the existing agricultural grain treatment device.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: an impurity removal and drying device for agricultural grains comprises a shell and a movable base, wherein the bottom of the shell is fixedly connected to the upper surface of the movable base, a guide cylinder is fixedly connected to the left feed inlet at the top of the shell, an impurity removal device is fixedly connected to the left side of the shell through a fixing frame, a fan is fixedly connected to the upper surface of the shell, a partition plate is fixedly connected to the top of the inner side of the shell, a drying device is fixedly connected between the right side of the partition plate and the inner wall of the right side of the shell, an air outlet pipe of the fan penetrates through the top of the shell and is fixedly connected to the top of the drying device, guide plates are fixedly connected to the inner walls of the left side and the right side of the shell, the two guide plates are distributed on the inner walls of the left side and the right side of the shell in, the conveying device is fixedly connected with the bottom of the inner side of the shell and comprises a conveying pipe, a feeding hopper, a discharging pipe, a second driving motor, a conveying rotating shaft and a conveying spiral sheet, the conveying pipe is fixedly connected with the bottom of the inner side of the shell, a material guide opening on the left side of the upper surface of the conveying pipe is fixedly connected with the feeding hopper, a right material collecting opening of the material collecting plate is positioned right above the feeding hopper, the right end of the conveying pipe penetrates through the inner wall of the right side of the shell, the discharging pipe is fixedly connected with the discharging opening on the right side of the lower surface of the conveying pipe, the second driving motor is fixedly connected with the left side surface of the shell, an output shaft of the second driving motor penetrates through the left side surface of the shell and the left end surface of the conveying pipe and is fixedly connected with the conveying rotating shaft through, and the conveying rotating shaft is fixedly connected with a conveying spiral sheet.

Preferably, the impurity removing device comprises an impurity removing pipe, a first driving motor, an impurity removing fan blade, a first filter screen, a second filter screen, a through hole, a threaded connector, a first slag collecting barrel and a second slag collecting barrel, the right port of the impurity removing pipe penetrates through the left side surface of the shell, a first driving motor is fixedly connected between the top and the bottom of the inner side of the impurity removing pipe through a fixed rod, the output shaft of the first driving motor is fixedly connected with an impurity removing fan blade through a fixing block, a first filter screen and a second filter screen are fixedly connected between the top and the bottom of the inner side of the impurity removing pipe, the second filter screen is positioned at the left side of the first filter screen, two through holes are formed in the lower surface of the impurity removing pipe and are respectively located at the bottoms of the first filter screen and the second filter screen, threaded connectors are fixedly connected to the two through holes, and the two threaded connectors are respectively in threaded connection with a first accumulated slag barrel and a second accumulated slag barrel.

Preferably, drying device includes multi-way pipe, joint, first heater strip, gas-supply pipe, second heater strip and shower nozzle, the left end fixed connection of multi-way pipe is at the right flank of baffle, and the right-hand member fixed connection of multi-way pipe is at the right side inner wall of casing, the air inlet fixedly connected with joint of multi-way pipe, the play tuber pipe of fan runs through the top fixed connection of casing on the joint, the first heater strip of fixedly connected with between the left and right sides inner wall of multi-way pipe, the fixedly connected with gas-supply pipe of bottom gas outlet department of multi-way pipe, the quantity of gas-supply pipe is six, and six gas-supply pipe equidistance distribute in the bottom of multi-way pipe, the gas-supply pipe is keeping away from the one end fixedly connected with shower nozzle of multi-way pipe.

Preferably, the material guide plate comprises a material collecting groove, a flow dividing groove and vent holes, the material collecting groove is formed in the left side of the upper surface of the material guide plate, the flow dividing groove communicated with the material collecting groove is formed in the upper surface of the material guide plate, the vent holes are formed in the bottom of the inner side of the flow dividing groove, the flow dividing groove is uniformly distributed in the upper surface of the material guide plate, the vent holes are uniformly distributed in the bottom of the inner side of the flow dividing groove, and the diameter of each vent hole is 3-5 mm.

(III) advantageous effects

The invention provides an impurity removing and drying device for agricultural grains. The method has the following beneficial effects:

(1) when the device is used, grains are guided into the inner wall of the shell through the guide cylinder, the grains enter the inner side of the shell through the bottom end of the guide cylinder, an output shaft of a first driving motor drives impurity removing fan blades to rotate through a fixed block, so that negative air pressure is generated in the area of the right end opening of the impurity removing pipe, the grains fall from the right end opening of the impurity removing pipe, lighter impurities in the grains are sucked into the impurity removing pipe, the grains fall on the upper surface of the guide plate under the action of gravity, an air outlet pipe of the fan heats external air flow through the drying device to dry the grains on the guide plate, the grains slowly fall from the guide plate under the dual actions of gravity and the vibration exciter, and the grains fall on the guide plate, at last, the output shaft of the second driving motor drives the conveying rotating shaft to rotate through the shaft coupling through the feeding hopper of the material collecting plate, the conveying rotating shaft is conveyed to convey the conveying spiral piece to guide out grains, and the grains are effectively subjected to impurity removal and drying treatment through discharge of a material discharging pipe, so that the problem of low grain treatment efficiency of the existing agricultural grain treatment device is solved.

(2) By arranging the impurity removing device, the material guide cylinder and the partition board to be matched with each other, when the device is used, cereal passes through the inside of the leading-in casing of guide cylinder, first driving motor's output shaft drives the edulcoration flabellum through the fixed block and rotates, the rotatory right-hand member mouth region that makes the edulcoration pipe of edulcoration flabellum produces the negative air pressure, impurity in the guide cylinder bottom falls down cereal is inhaled the inside of edulcoration pipe and then is through the filtration of first filter screen and second filter screen, filter impurity, prevent to pollute the ambient air environment, the impurity of filtering gets into first long-pending sediment section of thick bamboo and the long-pending sediment section of thick bamboo of second through the through-hole department of bottom respectively, prevent that the interior impurity of edulcoration pipe from too much influencing the filtration of edulcoration device, first long-pending sediment section of thick bamboo and the long-pending sediment section of thick bamboo of second and threaded connection head threaded connection, be convenient for clear up the impurity of.

(3) According to the invention, the partition plate, the guide plate and the vibration exciter are matched with each other, when the device is used, grains are guided into the interior of the shell through the bottom end of the guide cylinder, fall on the guide plate after impurity removal and filtration, fall in the grain collecting tank, and fall downwards and slowly through the diversion channel under the action of the vibration exciter and gravity, so that the partition plate prevents the situation that the grains cannot be uniformly dried due to the fact that a large amount of grains fall simultaneously, the grains are effectively dispersed, the drying of the drying device is facilitated, and the problem that the existing grains are accumulated and are not convenient to dry is solved.

(4) According to the grain drying device, the fan and the drying device are matched with each other, the drying device dries grains, the fan guides external air flow into the multi-way pipe through the air outlet pipe, the external air flow is primarily heated through the first heating wires in the multi-way pipe and then guided into the air conveying pipe, the second heating wires in the air conveying pipe secondarily heat the air flow, and finally hot air flow is sprayed out through the spray head to dry the grains on the upper surface of the guide plate, the grains are dispersed on the guide plate, the grain drying speed is effectively accelerated, and the problem that the existing grain processing device for agriculture is low in drying efficiency is solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of an impurity removing device according to the present invention;

FIG. 3 is a schematic view of the drying apparatus according to the present invention;

fig. 4 is a schematic top view of a baffle of the present invention.

In the figure: 1 shell, 2 remove the base, 3 guide cylinder, 4 edulcoration device, 41 edulcoration pipe, 42 first driving motor, 43 edulcoration flabellum, 44 first filter screen, 45 second filter screen, 46 through-holes, 47 threaded connection head, 48 first long-pending sediment section of thick bamboo, 49 second long-pending sediment section of thick bamboo, 5 fan, 6 baffle, 7 drying device, 71 multi-ported pipe, 72 joints, 73 first heater strip, 74 gas-supply pipe, 75 shower nozzles, 76 second heater strip, 8 stock guide, 81 trough, 82 splitter box, 83 air vent, 9 vibration exciter, 10 album flitch, 11 conveyor, 111 conveyer pipe, 112 feeder hopper, 113 discharge tube, 114 second driving motor, 115 transport pivot, 116 transport flight.

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.

As shown in fig. 1 to 4, the present invention provides a technical solution: an impurity removing and drying device for agricultural grains comprises a shell 1 and a movable base 2, wherein the bottom of the shell 1 is fixedly connected to the upper surface of the movable base 2, a material guide cylinder 3 is fixedly connected to a feeding port on the left side of the top of the shell 1, an impurity removing device 4 is fixedly connected to the left side of the shell 1 through a fixing frame, the impurity removing device 4 comprises an impurity removing pipe 41, a first driving motor 42, impurity removing fan blades 43, a first filter screen 44, a second filter screen 45, a through hole 46, a threaded connector 47, a first slag collecting cylinder 48 and a second slag collecting cylinder 49, a right end opening of the impurity removing pipe 41 penetrates through the left side of the shell 1, the first driving motor 42 is fixedly connected between the top and the bottom of the inner side of the impurity removing pipe 41 through a fixing rod, the output shaft of the first driving motor 42 is fixedly connected with the impurity removing fan blades 43 through a fixing block, and the first filter screen 44 and, the second filter screen 45 is positioned on the left side of the first filter screen 44, two through holes 46 are formed in the lower surface of the impurity removing pipe 41, the two through holes 46 are respectively positioned at the bottoms of the first filter screen 44 and the second filter screen 45, threaded connectors 47 are fixedly connected at the positions of the two through holes 46, the two threaded connectors 47 are respectively in threaded connection with a first residue accumulating barrel 48 and a second residue accumulating barrel 49, the upper surface of the shell 1 is fixedly connected with a fan 5, a partition plate 6 is fixedly connected with the top of the inner side of the shell 1, a drying device 7 is fixedly connected between the right side surface of the partition plate 6 and the inner wall of the right side of the shell 1, an air outlet pipe of the fan 5 penetrates through the top of the shell 1 and is fixedly connected to the top of the drying device 7, the drying device 7 comprises a multi-way pipe 71, a connector 72, a first heating wire 73, an air pipe 74, the right end of the multi-way pipe 71 is fixedly connected to the inner wall of the right side of the shell 1, the air inlet of the multi-way pipe 71 is fixedly connected with a joint 72, the air outlet pipe of the fan 5 penetrates through the top of the shell 1 and is fixedly connected to the joint 72, a first heating wire 73 is fixedly connected between the inner walls of the left side and the right side of the multi-way pipe 71, an air conveying pipe 74 is fixedly connected to the air outlet of the bottom of the multi-way pipe 71, the number of the air conveying pipes 74 is six, the six air conveying pipes 74 are equidistantly distributed at the bottom of the multi-way pipe 71, a spray head 75 is fixedly connected to one end of the air conveying pipe 74 far away from the multi-way pipe 71, a second heating wire 76 is fixedly connected to the inner wall of the air conveying pipe 74, material guide plates 8 are fixedly connected to the inner walls of the left side and the right side of the shell, the left side of the upper surface of the guide plate 8 is provided with a material collecting groove 81, the upper surface of the guide plate 8 is provided with a splitter 82 communicated with the material collecting groove 81, the bottom of the inner side of the splitter 82 is provided with vent holes 83, the splitter 82 is uniformly distributed on the upper surface of the guide plate 8, the vent holes 83 are uniformly distributed on the bottom of the inner side of the splitter 82, the diameter of the vent holes 83 is 3-5 mm, the vent holes 83 are convenient for hot air of a drying device 7 to dry the bottom of the inner side of the shell 1, the bottom of the inner wall of the left side of the shell 1 is fixedly connected with a material collecting plate 10, the material collecting plate 10 is positioned below the guide plate 8, the bottom of the inner side of the shell 1 is fixedly connected with a conveying device 11, the conveying device 11 comprises a conveying pipe 111, a feeding hopper 112, a pipe 113, a second driving motor 114, a conveying rotating shaft 115 and a conveying spiral piece 116, the, the right side of material collecting plate 10 is gathered the mouth and is located feeder hopper 112 directly over, the right-hand member of conveyer pipe 111 runs through the right side inner wall of casing 1, the fixed discharge gate department fixedly connected with of lower surface right side of conveyer pipe 111 arranges material pipe 113, casing 1's left surface fixedly connected with second driving motor 114, second driving motor 114 is the low-speed motor, the output shaft of second driving motor 114 runs through casing 1's the left surface and the left end face of conveyer pipe 111 and carries pivot 115 through shaft coupling fixedly connected with, carry pivot 115 to pass through bearing base swing joint at the right side inner wall of conveyer pipe 111 in the one end of keeping away from second driving motor 114, fixedly connected with carries flight 116 in the transport pivot 115.

In conclusion, the invention is provided with the casing 1, the movable base 2, the material guide cylinder 3, the impurity removing device 4, the fan 5, the partition plate 6, the drying device 7, the material guide plate 8, the vibration exciter 9 and the conveying device 11 which are matched with each other, when the device is used, grains are guided into the inner wall of the casing 1 through the material guide cylinder 3, the grains enter the inner side of the casing 1 through the bottom end of the material guide cylinder 3, the output shaft of the first driving motor 42 drives the impurity removing fan blades 43 to rotate through the fixed block, so that negative air pressure is generated in the right end opening area of the impurity removing pipe 41, the grains fall from the right end opening of the impurity removing pipe 41, light impurities in the grains are sucked into the impurity removing pipe 41, the grains fall on the upper surface of the material guide plate 8 under the action of gravity, the air outlet pipe of the fan 5 heats external air flow through the drying device 7 to dry the grains on the material guide plate 8, the grains slowly fall from the, cereal that falls on stock guide 8, the leading-in feeder hopper 112 of flitch 10 through the album at last, second driving motor 114's output shaft passes through the shaft coupling and drives and carry pivot 115 rotatory, carries the epaxial transport flight 116 of pivot 115 to derive cereal, discharges through row's material pipe 113, and the effectual edulcoration stoving treatment that carries out simultaneously to cereal has solved the problem that current agricultural cereal processing apparatus cereal treatment effeciency is low.

By arranging the impurity removing device 4, the guide cylinder 3 and the baffle 6 to be matched with each other, when the device is used, grains are guided into the shell 1 through the guide cylinder 3, the output shaft of the first driving motor 42 drives the impurity removing fan blades 43 to rotate through the fixed block, the impurity removing fan blades 43 rotate to enable the right end opening area of the impurity removing pipe 41 to generate negative air pressure, impurities falling from the grains at the bottom end of the guide cylinder 3 are sucked into the impurity removing pipe 41 and then filtered through the first filter screen 44 and the second filter screen 45, the first filter screen 44 and the second filter screen 45 carry out graded filtering on the impurities, the blockage of the impurity removing device 4 is prevented, the impurities are filtered, the ambient air environment is prevented from being polluted, the filtered impurities respectively enter the first residue collecting cylinder 48 and the second residue collecting cylinder 49 through the through holes 46 at the bottom, the excessive impurities in the impurity removing pipe 41 are prevented from influencing the filtering of the impurity removing device 4, the first residue collecting cylinder 48, the second residue collecting cylinder 49 and the, impurity that 41 accumulations of edulcoration pipe is convenient for clear up has solved current agricultural and has not been convenient for clear up the problem of impurity with cereal edulcoration drying device.

Through setting up baffle 6, guide plate 8 and vibration exciter 9 mutually support, when equipment uses, cereal passes through the leading-in casing 1's of bottom of guide cylinder 3 inside, drop on stock guide 8 after the edulcoration filters, cereal drops in groove 81 that gathers materials, under the effect of vibration exciter 9 and gravity, groove 81 that gathers materials's cereal slowly falls down downwards through splitter box 82, baffle 6 prevents that a large amount of cereal from dropping down the condition that leads to cereal can not evenly dry simultaneously, effectually disperse cereal, be favorable to drying device 7's stoving, the problem of current cereal piling up the stoving of being not convenient for has been solved.

Through setting up fan 5 and drying device 7 and mutually supporting, drying device 7 dries cereal, fan 5 passes through the leading-in multi-ported pipe 71 of tuber pipe with external air current in, external air current passes through the preliminary heating of the interior first heater strip 73 of multi-ported pipe 71, then leading-in gas-supply pipe 74, second heater strip 76 in the gas-supply pipe 74 is to the air current secondary heating, spout the hot gas flow through shower nozzle 75 at last, dry the cereal of guide plate 8 upper surface, cereal dispersion is on guide plate 8, the effectual stoving speed of accelerating cereal, the problem of current cereal processing apparatus drying efficiency low for the agricultural has been solved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

1. The utility model provides an agricultural is edulcoration drying device for cereal, includes casing (1) and removes base (2), the bottom fixed connection of casing (1) is at the upper surface of removing base (2), its characterized in that: the feeding device is characterized in that a guide cylinder (3) is fixedly connected to the left feeding port at the top of the shell (1), an impurity removing device (4) is fixedly connected to the left side face of the shell (1) through a fixing frame, a fan (5) is fixedly connected to the upper surface of the shell (1), a partition plate (6) is fixedly connected to the top of the inner side of the shell (1), a drying device (7) is fixedly connected between the right side face of the partition plate (6) and the right inner wall of the shell (1), an air outlet pipe of the fan (5) penetrates through the top of the shell (1) and is fixedly connected to the top of the drying device (7), guide plates (8) are fixedly connected to the inner walls of the left side and the right side of the shell (1), the two guide plates (8) are distributed on the inner walls of the left side and the right side of the shell (1) in a staggered manner, vibration exciters (9) are fixedly, inboard bottom fixedly connected with conveyor (11) of casing (1), conveyor (11) are including conveyer pipe (111), feeder hopper (112), row's material pipe (113), second driving motor (114), carry pivot (115) and carry flight (116), inboard bottom fixedly connected with conveyer pipe (111) of casing (1), the left guide mouth fixedly connected with feeder hopper (112) of upper surface of conveyer pipe (111), the right side collection mouth of collection board (10) is located feeder hopper (112) directly over, the right-hand member of conveyer pipe (111) runs through the right side inner wall of casing (1), the fixed discharge gate department fixedly connected with row's material pipe (113) on the lower surface right side of conveyer pipe (111), the left surface fixedly connected with second driving motor (114) of casing (1), the output shaft of second driving motor (114) runs through the left surface of casing (1) and the left end face of conveyer pipe (111) and through the antithetical couplet The shaft device is fixedly connected with a conveying rotating shaft (115), one end of the conveying rotating shaft (115) far away from the second driving motor (114) is movably connected to the inner wall of the right side of the conveying pipe (111) through a bearing base, and a conveying spiral sheet (116) is fixedly connected to the conveying rotating shaft (115);

the impurity removing device (4) comprises an impurity removing pipe (41), a first driving motor (42), impurity removing fan blades (43), a first filter screen (44), a second filter screen (45), through holes (46), a threaded connector (47), a first slag accumulating cylinder (48) and a second slag accumulating cylinder (49), wherein a right port of the impurity removing pipe (41) penetrates through the left side face of the shell (1), the first driving motor (42) is fixedly connected between the top and the bottom of the inner side of the impurity removing pipe (41) through a fixing rod, the impurity removing fan blades (43) are fixedly connected with an output shaft of the first driving motor (42) through a fixing block, the first filter screen (44) and the second filter screen (45) are fixedly connected between the top and the bottom of the inner side of the impurity removing pipe (41), the second filter screen (45) is positioned on the left side of the first filter screen (44), two through holes (46) are formed in the lower surface of the impurity removing pipe, the two through holes (46) are respectively positioned at the bottoms of the first filter screen (44) and the second filter screen (45), the two through holes (46) are fixedly connected with threaded connectors (47), and the two threaded connectors (47) are respectively in threaded connection with a first slag deposition cylinder (48) and a second slag deposition cylinder (49);

the drying device (7) comprises a multi-way pipe (71), a joint (72), a first heating wire (73), a gas pipe (74), a second heating wire (76) and a spray head (75), wherein the left end of the multi-way pipe (71) is fixedly connected to the right side surface of the partition board (6), the right end of the multi-way pipe (71) is fixedly connected to the right inner wall of the shell (1), the gas inlet of the multi-way pipe (71) is fixedly connected with the joint (72), the air outlet pipe of the fan (5) penetrates through the top of the shell (1) and is fixedly connected to the joint (72), the first heating wire (73) is fixedly connected between the inner walls of the left side and the right side of the multi-way pipe (71), the gas pipe (74) is fixedly connected to the gas outlet at the bottom of the multi-way pipe (71), the gas pipe is arranged at the bottom of the multi-way pipe (71), the spray head (75), the inner side wall of the air conveying pipe (74) is fixedly connected with a second heating wire (76);

guide plate (8) are including album silo (81), splitter box (82) and air vent (83), album silo (81) have been seted up on the upper surface left side of guide plate (8), splitter box (82) that are linked together with album silo (81) have been seted up to the upper surface of guide plate (8), air vent (83) have been seted up to the inboard bottom of splitter box (82), splitter box (82) evenly distributed is at the upper surface of guide plate (8), air vent (83) evenly distributed is in the inboard bottom of splitter box (82).

2. A drying method using the impurity removing and drying device for agricultural grain according to claim 1, characterized in that: grains are guided into the inner wall of the shell (1) through the guide cylinder (3), the grains enter the inner side of the shell (1) through the bottom end of the guide cylinder (3), an output shaft of the first driving motor (42) drives the impurity removal fan blades (43) to rotate through the fixed block, negative air pressure is generated in the area of the right end opening of the impurity removal pipe (41), the grains fall from the right end opening of the impurity removal pipe (41), lighter impurities in the grains are sucked into the impurity removal pipe (41), the grains fall on the upper surface of the guide plate (8) under the action of gravity, an air outlet pipe of the fan (5) heats external air flow through the drying device (7) to dry the grains on the guide plate (8), the grains slowly fall from the guide plate (8) under the dual actions of gravity and the vibration exciter (9), the grains fall on the guide plate (8), and finally are guided into the feed hopper (112) through the material collecting plate (10), an output shaft of the second driving motor (114) drives the conveying rotating shaft (115) to rotate through the coupler, the conveying spiral piece (116) on the conveying rotating shaft (115) guides out grains, the grains are discharged through the discharging pipe (113), and impurity removal and drying treatment can be effectively carried out on the grains at the same time; cereal is led into the inside of casing (1) through guide cylinder (3), the output shaft of first driving motor (42) drives edulcoration flabellum (43) through the fixed block and rotates, edulcoration flabellum (43) rotation makes the right end mouth region of edulcoration pipe (41) produce the negative pressure, impurity in the cereal that falls down in guide cylinder (3) bottom is inhaled the inside of edulcoration pipe (41) and then is through the filtration of first filter screen (44) and second filter screen (45), first filter screen (44) and second filter screen (45) carry out the stage filtration to impurity, prevent the jam of edulcoration device (4), filter impurity, prevent polluting the surrounding air environment, the impurity of filtering gets into first long-pending sediment section of thick bamboo (48) and second long-pending sediment section of thick bamboo (49) through-hole (46) department of bottom respectively, prevent that impurity in the edulcoration pipe (41) from excessively influencing the filtration of edulcoration device (4), the first slag accumulating cylinder (48) is in threaded connection with the second slag accumulating cylinder (49) and the threaded connector (47), so that impurities accumulated on the impurity removing pipe (41) can be conveniently cleaned.