CN111495760A

CN111495760A - Agricultural seed dust removal edulcoration sieving mechanism

Info

Publication number: CN111495760A
Application number: CN202010340511.3A
Authority: CN
Inventors: 郭钊鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-08-07

Abstract

The invention discloses an agricultural seed dust removal, impurity removal and screening device which comprises an electromagnetic feeding device, a dust raising chamber, a screening device, a rack, a motor, an exhaust fan, a collecting device, a plurality of traveling devices and a settling chamber device, wherein the screening device is arranged at the rear side of the top surface of the rack, the collecting device is arranged at the front side of the top surface of the rack, the electromagnetic feeding device is arranged at the left side of the top surface of the screening device, the dust raising chamber is arranged at the right side of the top surface of the screening device, the bottom of the dust raising chamber is communicated and connected with the inside of the screening device, the settling chamber device is arranged at the rear upper part of the dust raising chamber, an air pipe is communicated between the side end of the settling chamber and the top of the dust raising chamber, the exhaust fan is arranged at the bottom of the rack, the motor is arranged at the left side of the, The practicability is strong, the manpower is saved, the time is saved, the working efficiency is high, and the operation is simple.

Description

Agricultural seed dust removal edulcoration sieving mechanism

Technical Field

The invention relates to a dust-removing, impurity-removing and screening device for agricultural seeds, belonging to the technical field of agricultural machinery.

Background

Can mix the leaf in the soybean seed of results, impurity such as pea nut and pod, and the nibble, the seed of shrivelled and tiny granule, unqualified seed does not emerge or is difficult for emerging, even emerge also difficult survival, need carry out reseeding, can cause the later stage to grow irregularly, difficult management, labor efficiency has also been reduced, at present, in survey seed germination rate, before work such as thousand seed weights and field examination kind, need screen the seed, in order to get rid of impurity, the nibble, seed of shrivelled and tiny granule, obtain plump seed, the rate of emergence can be guaranteed like this.

Not only through artifical selection and use sieve screening consuming time and wasting power, the dust is great, and separation efficiency is low, also is not fit for extensive industrial production, for solving above-mentioned problem, it is necessary to provide a seed sieve separator that agricultural seed dust removal edulcoration sieving mechanism has improvement structure to improve the screening efficiency and the quality of seed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a dust-removing, impurity-removing and screening device for agricultural seeds, which aims to solve the existing problems.

In order to achieve the purpose, the invention is realized by the following technical scheme: an agricultural seed dust removal edulcoration sieving mechanism, its structure includes electromagnetism feeder, raise dust room, sieving mechanism, frame, motor, air exhauster, collection device, a plurality of running gear, deposit room device, the sieving mechanism install in frame top surface rear side position, the collection device install in frame top surface front side position, electromagnetism feeder locates in sieving mechanism top surface left side, the raise dust room locates on sieving mechanism top surface right side, raise dust room bottom with the inside intercommunication of sieving mechanism is connected, the deposit room device is located raise dust room rear top, the intercommunication has the tuber pipe between deposit room side and the raise dust room top, the air exhauster is located the frame bottom, the motor is located the sieving mechanism left side, the motor rear is equipped with the speed reducer, the motor output shaft with the speed reducer input is connected, each running gear all install in the frame bottom, sieving mechanism comprises screening case, frame, first filter plate, second filter plate, chamber door, charging tray, a plurality of spring and vibrator, spring mounting in frame bottom four corners, the spring other end with the inside bottom fixed connection of screening case, the vibrator is located frame bottom central point puts, three draw-in grooves have been seted up in the frame from top to bottom in proper order, first filter plate, second filter plate and charging tray in proper order with three draw-in groove slidable ground interference is connected, the chamber door is articulated install in screening case left end, during the design of chamber door in order to be convenient with through opening the chamber door after the screening first filter plate, second filter plate and charging tray are taken out to the residue above the clearance.

Further, electromagnetism feeder apparatus comprises feeder hopper, silo, backup pad, bottom plate, a plurality of vibration isolation spring, base, electro-magnet, armature, conveying pipe, support frame, the feeder hopper passes through the support frame with frame fixed connection, the silo is located the feeder hopper below, the backup pad install in the silo bottom, the backup pad bottom with bottom plate fixed connection, the vibration isolation spring is located base top surface right side, the vibration isolation spring other end with bottom plate bottom fixed connection, the electro-magnet is located base top surface left side, armature is located the backup pad left end, the conveying pipe with silo right-hand member intercommunication is connected, the conveying pipe left end runs through raise dust room left wall and extend to raise dust indoor portion.

Further, raise dust indoor portion bearing connection has the runner, runner rear end pivot runs through raise dust indoor rear wall and extend to the external world, runner rear end pivot with the cover is equipped with first drive belt between the speed reducer output shaft, runner surface mounting has a plurality of stirring boards, the inside bottom both sides of raise dust indoor portion all are equipped with slidable fender seed plate, each keep off the seed plate top and all be equipped with the rack, raise dust indoor front end both sides all rotate and are connected with the knob, each the knob pivot runs through raise dust indoor antetheca and terminal department are equipped with the gear, each the gear respectively with both sides the rack toothing is connected.

Further, the deposit room device comprises deposit room, tuber pipe, blast pipe, heap dirt fill, a plurality of spoiler, choked flow wheel and dust screen, blast pipe one end with deposit room bottom intercommunication, the blast pipe other end with the air exhauster wind gap is connected, the dust screen install in the blast pipe with deposit room intercommunication department, it locates to pile the dirt fill the deposit room bottom, each the equal fixed mounting of spoiler in the deposit room inner wall, the choked flow wheel is located the inside central point of deposit room puts, the choked flow wheel comprises four arcs, and the arc structure can more effectively adsorb the dust.

Further, collection device comprises a seed piling groove, a poor groove of collection, a miscellaneous groove of collection, a first discharging way, a second discharging way, a third discharging way and a discharging hopper, the seed piling groove, the poor groove of collection and the miscellaneous groove of collection are placed in proper order from right to left in frame top front side, first discharging way is located seed piling groove top, first discharging way upper end with second filter plate top right-hand member intercommunication, the second discharging way is located poor groove top of collection, second discharging way upper end with charging tray top central point puts the intercommunication, the third discharging way is located miscellaneous groove top of collection, third discharging way upper end with first filter plate top left side intercommunication, discharging hopper is located seed piling groove below and with seed piling tank bottom intercommunication, the design of seed piling groove is in order to prevent that the seed from splashing.

Further, second filter plate right part top is equipped with clean wheel, both sides wall all is equipped with corresponding through-hole around the frame, clean wheel both ends pivot pass corresponding through-hole respectively and with screening incasement wall bearing connects, clean wheel rear end pivot with be connected with the second drive belt between the speed reducer, the through-hole aperture is greater than clean wheel pivot diameter, consequently, when the frame vibration screening, the frame can not touch clean wheel.

Further, first filter plate and second filter plate constitute by last deckle board, deckle board and the filter screen that corresponds the aperture, deckle board top be equipped with the recess of filter screen looks isoform, going up deckle board lower extreme four corners position all is equipped with the fixture block, deckle board top four corners position all is equipped with corresponding card hole down.

Furthermore, the walking device comprises universal wheels, a fixing block, a stud, a nut and a supporting block, the universal wheels are installed at four corners of the bottom end of the rack, the fixing block is installed at the outer wall of the bottom of the rack, the stud is in threaded connection with the fixing block, the nut is arranged below the fixing block and in threaded connection with the stud, the supporting block is installed at the bottom end of the stud, and the nut can clamp the stud to prevent the stud from sliding upwards.

The invention has the beneficial effects that: the dust collection device has the advantages that the dust collection mode of the dust raising chamber and the screening device is adopted, the dust removal of seeds is realized, meanwhile, the dust pollution is avoided, the screening device is internally provided with the suspension frame for vibration screening, the screening efficiency is improved, the working noise is reduced, meanwhile, the service life of the device is obviously prolonged, the structure of the clamping groove in the frame and the structure of the detachable filter plate are designed, a user can replace a filter screen with a corresponding aperture according to different types of the seeds to be screened, the cleaning is more convenient, the use range is greatly improved, the three discharging channels are designed, the classification and collection of the seeds by the user are facilitated, and the effects of low manufacturing cost, strong practicability, labor saving, time saving, high working efficiency and simplicity in operation are achieved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural diagram of an agricultural seed dust removal, impurity removal and screening device according to the present invention;

FIG. 2 is a partial structural cross-sectional view of the agricultural seed dust removal, impurity removal and screening device of the present invention;

FIG. 3 is a schematic diagram of a frame structure of the agricultural seed dust removal, impurity removal and screening device of the present invention;

FIG. 4 is a structural cross-sectional view of a settling chamber device of the agricultural seed dust removal, impurity removal and screening device of the present invention;

FIG. 5 is a schematic diagram of a filter plate structure of the agricultural seed dust removal, impurity removal and screening device of the present invention;

FIG. 6 is a schematic structural view of a traveling device of the agricultural seed dust removal, impurity removal and screening device of the present invention.

In the figure: an electromagnetic feeding device-1, a dust raising chamber-2, a screening device-3, a frame-4, a motor-5, an exhaust fan-6, a collecting device-7, a walking device-8, a settling chamber device-9, a speed reducer-51, a screening box-31, a frame-32, a first filter plate-33, a second filter plate-34, a box door-35, a material tray-36, a spring-37, a vibrator-38, a clamping groove-39, a feeding hopper-11, a trough-12, a supporting plate-13, a bottom plate-14, a vibration isolation spring-15, a base-16, an electromagnet-17, an armature-18, a feeding pipe-19, a supporting frame-20, a rotating wheel-21, a first driving belt-22, a stirring plate-23, a vibration isolation spring-15, a base, The device comprises a seed baffle plate-24, a rack-25, a knob-26, a gear-27, a settling chamber-91, an air pipe-92, an air supply pipe-93, a dust hopper-94, a spoiler-95, a spoiler wheel-96, a dustproof net-97, a seed piling groove-71, a poor collecting groove-72, a impurity collecting groove-73, a first discharging channel-74, a second discharging channel-75, a third discharging channel-76, a discharging hopper-77, a cleaning wheel-40, a through hole-41, a second transmission belt-42, an upper frame plate-331, a lower frame plate-332, a filter screen-333, a groove-334, a fixture block-335, a fixture hole-336, a universal wheel-81, a fixture block-82, a stud-83, a nut-84 and a support block-85.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by the embodiments in combination with the attached drawings.

Referring to fig. 1-6, the present invention provides a technical solution: the structure includes electromagnetism feeder 1, raise dust room 2, sieving mechanism 3, frame 4, motor 5, air exhauster 6, collection device 7, four running gear 8, settling chamber device 9, its characterized in that: the screening device 3 is arranged at the rear side of the top surface of the frame 4, the collecting device 7 is arranged at the front side of the top surface of the frame 4, the electromagnetic feeding device 1 is arranged at the left side of the top surface of the screening device 3, the electromagnetic feeding device 1 is composed of a feeding hopper 11, a trough 12, a supporting plate 13, a bottom plate 14, four vibration isolation springs 15, a base 16, an electromagnet 17, an armature 18, a feeding pipe 19 and a supporting frame 20, the feeding hopper 11 is fixedly connected with the frame 4 through the supporting frame 20, the trough 12 is arranged below the feeding hopper 11, the supporting plate 13 is arranged at the bottom end of the trough 12, the bottom end of the supporting plate 13 is fixedly connected with the bottom plate 14, the vibration isolation springs 15 are arranged at the right side of the top surface of the base 16, the other ends of the vibration isolation springs 15 are fixedly connected with the, the armature 18 is arranged at the left end of the supporting plate 13, the feeding pipe 19 is communicated and connected with the right end of the material tank 12, the left end of the feeding pipe 19 penetrates through the left wall of the dust raising chamber 2 and extends to the inside of the dust raising chamber 2, the dust raising chamber 2 is arranged at the right side of the top surface of the screening device 3, the bottom of the dust raising chamber 2 is communicated and connected with the inside of the screening device 3, a rotating wheel 21 is connected with the inside of the dust raising chamber 2 through a bearing, a rotating shaft at the rear end of the rotating wheel 21 penetrates through the rear wall of the dust raising chamber 2 and extends to the outside, a first driving belt 22 is sleeved between the rotating shaft at the rear end of the rotating wheel 21 and an output shaft of the speed reducer 51, eight movable plate stirrers 23 are arranged on the outer surface of the rotating wheel 21, two sides of the bottom inside the dust raising chamber 2 are respectively provided with a slidable seed blocking plate 24, each rotary shaft of the knob 26 penetrates through the front wall of the dust raising chamber 2, a gear 27 is arranged at the tail end of the dust raising chamber, each gear 27 is respectively meshed and connected with the racks 25 at two sides, the settling chamber device 9 is positioned at the rear upper part of the dust raising chamber 2, the settling chamber device 9 is composed of a settling chamber 91, an air pipe 92, an air supply pipe 93, a dust accumulation hopper 94, four spoilers 95, spoilers 96 and a dust screen 97, one end of the air supply pipe 93 is communicated with the bottom of the settling chamber 91, the other end of the air supply pipe 93 is connected with an air opening of the exhaust fan 6, the dust screen 97 is arranged at the communication part of the air supply pipe 93 and the settling chamber 91, the dust accumulation hopper 94 is arranged at the bottom end of the settling chamber 91, each spoiler 95 is fixedly arranged on the inner wall of the settling chamber 91, the spoilers 96 are arranged at the central position inside the settling chamber 91, and an air pipe 92 is communicated, the exhaust fan 6 is arranged at the bottom of the frame 4, the motor 5 is arranged at the left side of the screening device 3, the speed reducer 51 is arranged at the rear of the motor 5, the output shaft of the motor 5 is connected with the input end of the speed reducer 50, each walking device 8 is arranged at the bottom of the frame 4, the screening device 3 is composed of a screening box 31, a frame 32, a first filtering plate 33, a second filtering plate 34, a box door 35, a material tray 36, eight springs 37 and a vibrator 38, the springs 37 are arranged at four corners of the bottom end of the frame 32, the other end of each spring 37 is fixedly connected with the bottom end inside the screening box 31, the vibrator 38 is arranged at the central position of the bottom end of the frame 32, three clamping grooves 39 are sequentially arranged in the frame 32 from top to bottom, the first filtering plate 33, the second filtering plate 34 and the material tray 36 are sequentially, first filter plate 33 and second filter plate 34 constitute by last deckle board 331, lower deckle board 332 and the filter screen 333 that corresponds the aperture, deckle board 332 top be equipped with the recess 334 of the same shape of filter screen 333, go up deckle board 331 lower extreme four corners position and all be equipped with fixture block 335, deckle board 332 top four corners position all is equipped with corresponding card hole 336 down, second filter plate 34 right part top is equipped with clean wheel 40, frame 32 front and back both sides wall all is equipped with corresponding through-hole 41, clean wheel 40 both ends pivot pass corresponding through-hole 41 respectively and with screening case 31 inner wall bearing connects, clean wheel 40 rear end pivot with be connected with second drive belt 42 between the speed reducer 51, through-hole 41 apertures are greater than clean wheel 40 pivot footpath, chamber door 35 articulated install in screening case 31 left end.

The collecting device 7 comprises a seed piling groove 71, a poor groove 72, a miscellaneous groove 73, a first discharging channel 74, a second discharging channel 75, a third discharging channel 73 and a discharging hopper 77, wherein the seed piling groove 71, the poor groove 72 and the miscellaneous groove 73 are sequentially placed in the front side of the top surface of the frame 4 from right to left, the first discharging channel 74 is arranged above the seed piling groove 71, the upper end of the first discharging channel 74 is communicated with the right end of the upper part of the second filter plate 34, the second discharging channel 75 is arranged above the poor groove 72, the upper end of the second discharging channel 75 is communicated with the central position of the upper part of the material plate 36, the third discharging channel 76 is arranged above the miscellaneous groove 73, the upper end of the third discharging channel 76 is communicated with the left side of the upper part of the first filter plate 33, the discharging hopper 77 is arranged below the seed piling groove 71 and is communicated with the bottom end of the seed piling groove 71, and the walking device 8 is composed of universal wheels 81, a first discharging channel 73, a second discharging channel 74, a, The universal wheels 81 are mounted at four corners of the bottom end of the frame 4, the fixing block 82 is mounted at the outer wall of the bottom of the frame 4, the stud 83 is in threaded connection with the fixing block 82, the nut 84 is arranged below the fixing block 82 and in threaded connection with the stud 83, and the supporting block 85 is mounted at the bottom end of the stud 83.

The working principle is as follows: pouring soybean seeds to be screened into a feed hopper 11, electrifying an electromagnet 17 to enable the electromagnet 17 to generate pulse electromagnetic force so as to adsorb an armature 18, continuously carrying out reciprocating vibration on the seeds falling from the feed hopper 11 by the frequency of an alternating current power supply by a trough 12, continuously feeding the seeds falling from the feed hopper 11 into a dust raising chamber 2, driving seed baffles 24 at two sides of the bottom of the dust raising chamber 2 to slide inwards by a user through a rotary knob 26 when the seeds flow into the dust raising chamber 2, closing a falling channel and preventing the seeds from continuously falling, starting a motor 5, driving a rotating wheel 21 to rotate by the motor 5, continuously turning over the seeds by an upper stirring plate 23, turning over and lifting the dust adhered to the seeds, starting an exhaust fan 6 at the moment, sucking the dust in the dust raising chamber 2 into a settling chamber 91 by the operation of the exhaust fan 6, and carrying the airflow of the dust on a baffle 95 with overlapped dislocation, the collision friction is generated to change the flow direction of the air flow, the flow speed of the dust-containing gas is completely reduced in the friction collision process, then the dust in the gas is adsorbed on the choked flow wheel 96 with an arc structure, when the dust is accumulated to a certain thickness, the dust falls off together with other larger particles and dust under the friction collision of the dust-containing gas and falls into the dust accumulation hopper 94, the dust removal and the dust collection of the seeds are completed in the process, after the user expects the dust removal to be finished, the seed baffle plate 24 is opened through rotating the knob 26, then the seeds continuously fall into the screening device 3 from the dust raising chamber 2, then the vibrator 38 is started, the frame 32 is vibrated by the vibrator 38, so that the filtering speed of the seeds is accelerated, the first filter plate 33 can effectively block sundries such as leaves and stones in the seeds, then is vibrated to the left end of the first filter plate 33 along with the vibration of the frame 32, and then slides into the sundry collecting groove 73 through the third material, the filtered seeds fall onto the second filter plate 34, the aperture of the filter holes of the second filter plate 34 is the same as the diameter of the complete and full seeds, so that the full seeds can be left on the second filter plate 34, the crushed, shriveled and small-sized seeds fall into the tray 36, and are respectively vibrated into the first discharging channel 74 and the second discharging channel 75, and then flow into the stacking groove 71 and the poor groove 72, and the discharging hopper 77 communicated with the stacking groove 71 can be sleeved with a jute bag for convenient collection, while the cleaning wheel 40 on the second filter plate 34 rotates under the action of the motor 5, so that the cleaning wheel 40 can push the high-quality seeds to the right, and can conveniently flow out from the first discharging channel 76, and can wipe off the impurities remained on the seeds.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an agricultural seed dust removal edulcoration sieving mechanism, its structure includes electromagnetism feeder (1), raise dust room (2), sieving mechanism (3), frame (4), motor (5), air exhauster (6), collection device (7), a plurality of running gear (8), deposit room device (9), its characterized in that: screening device (3) install in frame (4) top surface rear position, collection device (7) install in frame (4) top surface front position, electromagnetism feeder (1) is located screening device (3) top surface left side, raise dust room (2) are located screening device (3) top surface right side, raise dust room (2) bottom with screening device (3) inside intercommunication is connected, deposit room device (9) are located raise dust room (2) back upper place, deposit room (91) side with the intercommunication has tuber pipe (92) between raise dust room (2) top, air exhauster (6) are located frame (4) bottom, motor (5) are located screening device (3) left side, motor (5) rear is equipped with speed reducer (51), motor (5) output shaft with speed reducer (50) input connection, each walking device (8) is arranged at the bottom end of the frame (4), the screening device (3) is composed of a screening box (31), a frame (32), a first filter plate (33), a second filter plate (34), a box door (35), a material tray (36), a plurality of springs (37) and a vibrator (38), the springs (37) are arranged at four corners of the bottom end of the frame (32), the other ends of the springs (37) are fixedly connected with the bottom end in the screening box (31), the vibrator (38) is arranged at the center of the bottom end of the frame (32), three clamping grooves (39) are sequentially arranged in the frame (32) from top to bottom, the first filter plate (33), the second filter plate (34) and the material tray (36) are sequentially connected with the three clamping grooves (39) in a sliding interference mode, and the box door (35) is hinged to the left end of the screening box (31).

2. The agricultural seed dedusting, impurity-removing and screening device according to claim 1, which is characterized in that: the electromagnetic feeding device (1) consists of a feed hopper (11), a trough (12), a support plate (13), a bottom plate (14), a plurality of vibration isolation springs (15), a base (16), an electromagnet (17), an armature (18), a feeding pipe (19) and a support frame (20), wherein the feed hopper (11) is fixedly connected with the frame (4) through the support frame (20), the trough (12) is arranged below the feed hopper (11), the support plate (13) is arranged at the bottom end of the trough (12), the bottom end of the support plate (13) is fixedly connected with the bottom plate (14), the vibration isolation springs (15) are arranged at the right side of the top surface of the base (16), the other end of the vibration isolation springs (15) is fixedly connected with the bottom plate (14), the electromagnet (17) is arranged at the left side of the top surface of the base (16), the armature (18) is arranged at the left end of the support plate (13), the feeding pipe (19) is communicated with the right end of the material groove (12), and the left end of the feeding pipe (19) penetrates through the left wall of the dust raising chamber (2) and extends into the dust raising chamber (2).

3. The agricultural seed dedusting, impurity-removing and screening device according to claim 1, which is characterized in that: raise dust room (2) inner bearing is connected with runner (21), runner (21) rear end pivot runs through raise dust room (2) back wall and extend to the external world, runner (21) rear end pivot with the cover is equipped with first drive belt (22) between speed reducer (51) output shaft, runner (21) surface mounting has a plurality of stirring boards (23), raise dust room (2) inside bottom both sides all are equipped with slidable fender board (24), each fender board (24) top all is equipped with rack (25), raise dust room (2) front end both sides all rotate and are connected with knob (26), each knob (26) pivot runs through raise dust room (2) antetheca and terminal department are equipped with gear (27), each gear (27) respectively with both sides rack (25) meshing is connected.

4. The agricultural seed dedusting, impurity-removing and screening device according to claim 1, which is characterized in that: settling chamber device (9) comprises settling chamber (91), tuber pipe (92), blast pipe (93), pile dirt fill (94), a plurality of spoiler (95), choked flow wheel (96) and dust screen (97), blast pipe (93) one end with settling chamber (91) bottom intercommunication, blast pipe (93) other end with air exhauster (6) wind gap is connected, dust screen (97) install in blast pipe (93) with settling chamber (91) intercommunication department, pile dirt fill (94) and locate settling chamber (91) bottom, each spoiler (95) equal fixed mounting in settling chamber (91) inner wall, choked flow wheel (96) are located settling chamber (91) inside central point puts.

5. The agricultural seed dedusting, impurity-removing and screening device according to claim 1, which is characterized in that: the collecting device (7) consists of a seed piling groove (71), a poor collecting groove (72), a mixed collecting groove (73), a first discharging channel (74), a second discharging channel (75), a third discharging channel (76) and a discharging hopper (77), the seed piling groove (71), the poor collecting groove (72) and the mixed collecting groove (73) are sequentially placed in the front side of the top surface of the frame (4) from right to left, the first discharging channel (74) is arranged above the seed piling groove (71), the upper end of the first discharging channel (74) is communicated with the right end above the second filter plate (34), the second discharging channel (75) is arranged above the poor collecting groove (72), the upper end of the second discharging channel (75) is communicated with the central position above the material tray (36), the third discharging channel (76) is positioned above the mixed collecting groove (73), and the upper end of the third discharging channel (76) is communicated with the left side above the first filter plate (33), the discharge hopper (77) is arranged below the seed piling groove (71) and communicated with the bottom end of the seed piling groove (71).

6. The agricultural seed dedusting, impurity-removing and screening device according to claim 1, which is characterized in that: second filter plate (34) right part top is equipped with clean wheel (40), both sides wall all is equipped with corresponding through-hole (41) around frame (32), clean wheel (40) both ends pivot pass corresponding through-hole (41) respectively and with screening case (31) inner wall bearing is connected, clean wheel (40) rear end pivot with be connected with second drive belt (42) between speed reducer (51), through-hole (41) aperture is greater than clean wheel (40) pivot diameter.

7. The agricultural seed dedusting, impurity-removing and screening device according to claim 1, which is characterized in that: first filter plate (33) and second filter plate (34) constitute by last framed bents (331), lower framed bents (332) and filter screen (333) that correspond the aperture, lower framed bents (332) top be equipped with recess (334) of the same shape of filter screen (333), it all is equipped with fixture block (335) to go up framed bents (331) lower extreme four corners position, lower framed bents (332) top four corners position all is equipped with corresponding card hole (336).

8. The agricultural seed dedusting, impurity-removing and screening device according to claim 1, which is characterized in that: the walking device (8) is composed of universal wheels (81), fixing blocks (82), studs (83), nuts (84) and supporting blocks (85), the universal wheels (81) are installed at four corners of the bottom end of the rack (4), the fixing blocks (82) are installed on the outer wall of the bottom of the rack (4), the studs (83) are in threaded connection with the fixing blocks (82), the nuts (84) are arranged below the fixing blocks (82) and in threaded connection with the studs (83), and the supporting blocks (85) are installed at the bottom ends of the studs (83).