CN114932082B

CN114932082B - Multistage convenient dust collector of corn

Info

Publication number: CN114932082B
Application number: CN202210618183.8A
Authority: CN
Inventors: 丁奋勇; 丁旦
Original assignee: Gaian Shengfa Oil Co ltd
Current assignee: Gaian Shengfa Oil Co ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2023-03-14
Anticipated expiration: 2042-06-01
Also published as: CN114932082A

Abstract

The invention relates to a rice dust removal device, in particular to a multi-stage convenient rice dust removal device. The multistage convenient rice dust removal device can remove dust for multiple times and thoroughly remove dust. The invention is realized by the following technical approaches: a multistage convenient dust collector of corn, includes bottom plate, encloses frame, slide etc. encloses the bottom bilateral symmetry of frame and installs the bottom plate, encloses to install on the frame to be used for the corn to carry out the slide that the landing was carried out. Rotate through first rotor plate and blow out impurity such as cobblestone, dust that the air outlet mixes in the corn and blow away, can carry out dust removal work once more to the corn through the inclined hole board that reciprocates afterwards, so can guarantee dust removal quality, still can have impurity such as dust to mix inside the corn when avoiding single dust removal.

Description

Multistage convenient dust collector of corn

Technical Field

The invention relates to a rice dust removal device, in particular to a multi-stage convenient rice dust removal device.

Background

The rice is characterized in that the seeds of rice hulls are not removed, a large amount of dust impurities are often mixed in the rice which is just harvested, and dust removal treatment is needed to avoid the generation of a large amount of dust when the rice enters a storage bin for storage.

Patent publication No. CN210995192U discloses a combination formula dust collecting equipment is used in corn processing convenient to dismouting, including filtering the frame, first spout, the filter screen, the supporting seat, vibrating motor, the fixed plate, adjustable hopper structure down, adsorbable collection clearance seat structure, can cup joint the guide plate structure, U type frame, the bracing piece, the stay tube, first winged bolt, remove brake wheel and first square head bolt, this equipment passes through the socket, the collecting box, the setting of the hand-lift pole of type of falling U and collecting plate, be favorable to carrying out collecting box dismantlement work, conveniently carry out rubbish clearance work, nevertheless when this equipment removes dust to the corn, only realize dust removal work through the vibrations of filter screen, when taking this single mode to remove dust, make corn and dust pile up together easily, and then can produce the incomplete situation of removing dust.

In view of the above technical problem, it is necessary to design a multistage convenient dust collector of corn that can remove dust to corn many times, and remove dust thoroughly.

Disclosure of Invention

In order to overcome the defect that the existing rice dust removal equipment adopts a single mode to remove dust, so that rice and dust are easily accumulated together and further the situation of incomplete dust removal can be generated, the multi-stage convenient rice dust removal device capable of removing dust for multiple times and removing dust thoroughly is provided.

The invention is realized by the following technical approaches: the utility model provides a multistage convenient dust collector of corn, is including the bottom plate, encloses frame and slide, encloses frame bottom bilateral symmetry and installs the bottom plate, encloses the shelf location and has been used for the corn to carry out the slide of landing, still including prescreening mechanism and vibrations mechanism, encloses frame upper portion and is equipped with the prescreening mechanism that is used for tentatively removing dust to the corn, prescreening mechanism and enclosing to be equipped with the vibrations mechanism that can remove dust to the corn secondary between the frame.

In addition, it is especially preferred that the prescreening mechanism includes fan housing, air-out cover, first rotor plate, motor and driving belt, and the fan housing is installed to the anterior upside of slide, and the air-out cover is installed on slide rear side upper portion, and the motor is installed to fan housing left part front side, and fan housing middle part rotary type is equipped with the first rotor plate that can blow out the wind and carry out preliminary dust removal to the corn, overlaps through the driving wheel between first rotor plate left side and the motor output shaft left side and has driving belt.

In addition, it is particularly preferred that the vibration mechanism includes a single-tooth cam, a first connecting frame, a first connecting rod, a first return spring, a diagonal hole plate and a second return spring, the single-tooth cam is installed on the right side of the first rotating plate, the first connecting frame is slidably arranged on the lower side of the front portion of the slideway, the connecting frame is installed on the lower portion of the enclosing frame, the first connecting rods are symmetrically installed on the left and right of the bottom of the first connecting frame, penetrate through the connecting frame and are connected in a sliding manner, two first return springs are connected between the bottom of the first connecting frame and the connecting frame, the diagonal hole plate capable of screening rice is slidably arranged in the connecting frame, four second return springs are connected between the bottom of the diagonal hole plate and the connecting frame, the first connecting rods are in contact with the diagonal hole plate, and the single-tooth cam is in contact with the first connecting frame.

In addition, especially preferred is still including the secondary sieve mechanism that can be further removes dust to corn, and secondary sieve mechanism is including oblique connecting tube, fixed orifices case and fly leaf, and fixed orifices case is installed to slide rear portion downside, and fixed orifices case rear portion downside slidingtype is equipped with the fly leaf, and fixed orifices case and air-out cover all are connected with oblique connecting tube between with the slide.

Furthermore, it is particularly preferred that the air-out cover further comprises a drawing mechanism capable of scraping off dust on the inner wall of the air-out cover, the drawing mechanism comprises a second connecting frame, a sliding frame, a second rotating plate, a second connecting rod, a third reset spring, a third connecting rod and a locking block, the sliding frame is arranged at the lower part of the air-out cover, the sliding frame is arranged at the middle part of the second connecting frame, two third reset springs are connected between the sliding frame and the second connecting frame, the locking block is arranged at the bottom of the second connecting frame in a bilateral symmetry sliding manner, the locking block is respectively clamped with the air-out cover, three groups of second rotating plates capable of scraping off dust on the inner wall of the air-out cover are arranged at the upper part of the second connecting frame in an even rotating manner, the number of each group of second rotating plates is 2 and is arranged front and back, the middle part of the second rotating plate at the upper side is provided with the third connecting rod in an even rotating manner, and the left and right rotating type is connected with the second connecting rod between the front and back two adjacent second rotating plates.

In addition, especially preferred, still including knocking the mechanism of beating that makes the dust change whereabouts to the air-out cover, beat the mechanism including connecting rack, the third link, beat the board, torsion spring, tridentate cam and full gear, the third link is installed to air-out cover rear portion downside bilateral symmetry, the equal rotary type in third link front side is equipped with and can beats the board of beating that makes the dust change whereabouts to the air-out cover, beat and be connected with two torsion spring between board and the adjacent third link, the connecting rack is installed to second link bottom bilateral symmetry, the equal rotary type in third link rear side is equipped with full gear, all install the tridentate cam on the full gear, full gear all with adjacent connection rack toothing.

In addition, especially preferred is, still including the unloading mechanism that can control the volume that the corn flows, unloading mechanism is including the slide, connect roof, threaded rod and knob, and slide upper portion slidingtype is equipped with the slide that can cover the slide, and slide upper portion front side bilateral symmetry installs the knob, and equal screw thread formula is equipped with the threaded rod in the knob, and the equal rotary type in threaded rod top is equipped with the connection roof, connects the roof all with slide sliding type connection, connects the roof all with the slide contact.

In addition, the scooter further comprises a handle, and the handle is arranged in the middle of the front part of the scooter.

The invention has the following advantages: 1. rotate through first rotor plate and blow out impurity such as cobblestone, dust that the air outlet mixes in the corn and blow away, can carry out dust removal work once more to the corn through the inclined hole board that reciprocates afterwards, so can guarantee dust removal quality, still can have impurity such as dust to mix inside the corn when avoiding single dust removal.

2. Wind blowing through oblique connecting tube can also carry out dust removal work to corn before corn falls at the inclined hole board, so can further improvement to the dust removal effect of corn.

3. The second rotor plate moves downwards and can scrape off the dust attached to the inner wall of the air outlet cover, so that the influence on the dedusting work of the rice can be avoided after a large amount of dust is attached to the inner wall of the air outlet cover.

4. Improve and beat the board and rotate and strike the air-out cover, alright make the air-out cover produce vibrations, the dust that so can be better makes the air-out cover inner wall falls down.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial perspective view of the present invention.

Fig. 3 is a schematic perspective view of the prescreening mechanism of the present invention.

FIG. 4 is a schematic partial perspective view of the prescreening mechanism of the present invention.

FIG. 5 is a partially cut-away perspective view of the prescreening mechanism of the present invention.

Fig. 6 is a schematic view of a first perspective and spatial arrangement of the secondary screening mechanism of the present invention.

Fig. 7 is a perspective view of a second embodiment of the secondary screening mechanism of the present invention.

Fig. 8 is a schematic perspective view of the vibration mechanism of the present invention.

Fig. 9 is a first perspective view of the vibration mechanism of the present invention.

Fig. 10 is a perspective view of a second embodiment of the vibration mechanism of the present invention.

Fig. 11 is a perspective view of a third perspective view of the vibration mechanism of the present invention.

Fig. 12 is a perspective view of the drawer according to the present invention.

FIG. 13 is a first perspective view of the drawer mechanism of the present invention.

FIG. 14 is a perspective view of the drawer mechanism of the present invention from a second perspective.

Fig. 15 is a schematic perspective view of the present invention at a.

Fig. 16 is a schematic perspective view of the striking mechanism of the present invention.

Fig. 17 is a partial perspective view of the striking mechanism of the present invention.

Fig. 18 is a schematic perspective view of the present invention at position B.

Fig. 19 is a schematic perspective view of the blanking mechanism of the present invention.

Fig. 20 is a partial perspective view of the blanking mechanism of the present invention.

Wherein the figures include the following reference numerals: 1: bottom plate, 3: enclose frame, 4: slideway, 5: prescreening mechanism, 51: fan guard, 52: air outlet cover, 54: first rotating plate, 55: motor, 56: drive belt, 6: secondary screening mechanism, 61: oblique connecting pipe, 64: fixed orifice box, 65: a movable plate, 7: vibration mechanism, 71: single-tooth cam, 72: first link frame, 73: connection frame, 75: first connecting rod, 76: first return spring, 77: inclined hole plate, 79: second return spring, 8: drawing mechanism, 81: second link, 82: carriage, 83: second rotation plate, 84: second connecting rod, 85: third return spring, 86: third connecting rod, 87: locking block, 9: tapping mechanism, 91: connecting rack, 92: third link, 93: knock-out plate, 94: torsion spring, 95: all-gear, 96: three-tooth cam, 10: unloading mechanism, 101: a slide plate, 103: connecting top plate, 104: threaded rod, 106: a knob, 11: a handle.

Detailed Description

Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Example 1

The utility model provides a multistage convenient dust collector of corn, refer to fig. 1 and fig. 2 and show, including bottom plate 1, enclose frame 3, slide 4, prescreening mechanism 5 and reciprocating motion 7, it has bottom plate 1 to enclose 3 bottom bilateral symmetry rigid couplings, it has slide 4 to enclose the rigid coupling on the frame 3, slide 4 is used for corn to carry out the landing, it is equipped with prescreening mechanism 5 to enclose 3 upper portions of frame, prescreening mechanism 5 is used for tentatively removing dust to corn, prescreening mechanism 5 and enclosing and be equipped with reciprocating motion 7 between the frame 3, reciprocating motion 7 can remove dust to the corn secondary.

Referring to fig. 3-5, the prescreening mechanism 5 includes a fan cover 51, an air outlet cover 52, a first rotating plate 54, a motor 55 and a transmission belt 56, the fan cover 51 is fixedly connected to the upper side of the front portion of the slideway 4, the air outlet cover 52 is fixedly connected to the upper portion of the rear side of the slideway 4, the motor 55 is fixedly connected to the front side of the left portion of the fan cover 51, the first rotating plate 54 is rotatably arranged in the middle of the fan cover 51, the first rotating plate 54 can blow air to primarily remove dust from rice, and the transmission belt 56 is sleeved between the left side of the first rotating plate 54 and the left side of the output shaft of the motor 55 through the transmission wheel.

Referring to fig. 8-10, the vibration mechanism 7 includes a single-tooth cam 71, a first connecting frame 72, a connecting frame 73, a first connecting rod 75, a first return spring 76, a slant hole plate 77 and a second return spring 79, the single-tooth cam 71 is fixedly connected to the right side of the first rotating plate 54, the first connecting frame 72 is slidably arranged on the lower side of the front portion of the slideway 4, the connecting frame 73 is fixedly connected to the lower portion of the enclosure frame 3, the first connecting rods 75 are fixedly connected to the bottom of the first connecting frame 72 in a left-right symmetrical manner, the first connecting rods 75 penetrate through the connecting frame 73 and are slidably connected, two first return springs 76 are connected between the bottom of the first connecting frame 72 and the connecting frame 73, the slant hole plate 77 is slidably arranged in the connecting frame 73, the slant hole plate 77 can screen rice, four second return springs 79 are connected between the bottom of the slant hole plate 77 and the connecting frame 73, the first connecting rod 75 contacts with the slant hole plate 77, and the single-tooth cam 71 contacts with the first connecting frame 72.

When the dust removal treatment is required to be carried out on the rice, a worker can start the motor 55 to work, the output shaft of the motor 55 rotates to drive the first rotating plate 54 to rotate through the transmission belt 56 and the transmission wheel, the first rotating plate 54 rotates to blow air, the air is blown to the air outlet cover 52 through the slide way 4 and then blown out through the air outlet cover 52, the first rotating plate 54 also drives the single-tooth cam 71 to rotate, the convex part of the single-tooth cam 71 rotates to be in contact with the first connecting frame 72 and then rotates continuously, so that the first connecting frame 72 can move downwards, the first connecting frame 72 moves downwards to drive the first connecting rod 75 to move downwards, the first return spring 76 is compressed, the first connecting rod 75 moves downwards to drive the inclined hole plate 77 to move downwards, the second return spring 79 is compressed, and when the convex part of the single-tooth cam 71 rotates to be not in contact with the first connecting frame 72, under the action of the first return spring 76, the first connecting frame 72 and the first connecting rod 75 move upwards to avoid abutting against the inclined hole plate 77, and under the action of the second return spring 79, the inclined hole plate 77 moves upwards to reset, so that the first rotating plate 54 rotates continuously to enable the inclined hole plate 77 to move up and down continuously, then the paddy needing to be dedusted can be poured into the slideway 4, the paddy can slide downwards in the slideway 4, in the sliding process of the paddy, impurities such as small stones and dust contained in the paddy can be blown away under the action of blown wind, the impurities such as dust and the like can be positioned in the wind outlet cover 52 and slide down through the wind outlet cover 52, the paddy finally falls down on the inclined hole plate 77, the inclined hole plate 77 moves up and down continuously to carry out screening work on the paddy, the impurities such as small stones and dust and the like can pass through the inclined hole plate 77 to be stopped inside the connecting frame 73, the paddy stays on the inclined hole plate 77, and corn still can be backward landing on inclined hole board 77, screens corn through inclined hole board 77 and just can avoid having the pea gravel to mix and not blown away by wind in corn, just can stop motor 55 work after finishing to the corn dust removal, collects the corn of roll-off, clears up impurity such as the inside pea gravel of linking frame 73, dust again.

Example 2

On the basis of embodiment 1, as shown in fig. 2, 6 and 7, the secondary screening device further comprises a secondary screening mechanism 6, wherein the secondary screening mechanism 6 can further remove dust from the rice, the secondary screening mechanism 6 comprises an inclined connecting pipeline 61, a fixed hole box 64 and a movable plate 65, the fixed hole box 64 is fixedly connected to the lower side of the rear portion of the slideway 4, the movable plate 65 is slidably arranged on the lower side of the rear portion of the fixed hole box 64, and the inclined connecting pipeline 61 is connected between the fixed hole box 64 and the air outlet cover 52 and the slideway 4.

The wind that first rotor plate 54 rotated and blown out still can blow to slide 4 lower part through the oblique connecting tube of front side 61, blow to oblique connecting tube of rear side 61 and fixed orifices case 64 again afterwards, when corn carried out the landing through slide 4, the wind that blows through the oblique connecting tube of front side 61 still can carry out dust removal work to corn once more, the cobblestone, impurity such as dust just can be blown to in the fixed orifices case 64, so can carry out multistage dust removal to corn, guarantee the dust removal effect to corn, pull out movable plate 65 after finishing removing dust, the cobblestone in the fixed orifices case 64, impurity such as dust is cleared up, it can to insert movable plate 65 back fixed orifices case 64 again.

Referring to fig. 2, 11, 12, 13, 14 and 15, the dust-removing device further includes a pulling mechanism 8, the pulling mechanism 8 can scrape off dust on the inner wall of the air-out housing 52, the pulling mechanism 8 includes a second connecting frame 81, a sliding frame 82, a second rotating plate 83, a second connecting rod 84, a third return spring 85, a third connecting rod 86 and a locking block 87, the second connecting frame 81 is slidably disposed on the lower portion of the air-out housing 52, the sliding frame 82 is slidably disposed in the middle of the second connecting frame 81, two third return springs 85 are connected between the sliding frame 82 and the second connecting frame 81, the locking blocks 87 are slidably disposed at the bottom of the second connecting frame 81 in a bilateral symmetry manner, the locking blocks 87 are all engaged with the air-out housing 52, three sets of second rotating plates 83 are uniformly and rotatably disposed on the upper portion of the second connecting frame 81, the second rotating plates 83 can scrape off dust on the inner wall of the air-out housing 52, each set of the second rotating plates 83 is 2 and rotatably disposed in a front-back manner, the third connecting rods 86 are respectively disposed in a bilateral symmetry manner in the middle of the second rotating plates 83 on the upper side, and the front-back side, the second rotating plates 83 are both connected with the sliding frame 82, and the second rotating plates 84.

When dust slides down through the air outlet cover 52, dust may be attached to the inner wall of the air outlet cover 52, initially, the second rotating plate 83 is tilted upward, so that the worker can pull the sliding frame 82 to move downward, the third return spring 85 is compressed, the sliding frame 82 moves downward to drive the upper second rotating plate 83 to rotate downward into a straight shape through the third connecting rod 86, thus the upper second rotating plate 83 can be in contact with the inner wall of the air outlet cover 52, the upper second rotating plate 83 rotates downward to drive the middle second rotating plate 83 and the lower second rotating plate 83 to rotate into a straight shape through the second connecting rod 84, then the locking block 87 is pulled to move backward to be no longer clamped with the air outlet cover 52, the second connecting frame 81 can be pulled to drive the second rotating plate 83 to move downward, the second rotating plate 83 moves downward to scrape off the dust attached to the inner wall of the air outlet cover 52, after the second connecting frame 81 is completely pulled out of the air outlet cover 52, the sliding frame 82 moves upward under the action of the third return spring 85 to reset the sliding frame 86, so that the upper second rotating plate 83 is rotated and connected with the second rotating frame 83, and the rotating block 81 is rotated forward to be connected with the air outlet cover 52, and the rotating and the second rotating block 83.

Referring to fig. 2, 16, 17 and 19, the dust-removing device further comprises a knocking mechanism 9, the knocking mechanism 9 can knock the air-out cover 52 to make dust fall more easily, the knocking mechanism 9 comprises a connecting rack 91, a third connecting frame 92, a knocking plate 93, a torsion spring 94, a three-tooth cam 96 and a full gear 95, the third connecting frame 92 is welded on the lower side of the rear portion of the air-out cover 52 in a bilateral symmetry manner, the knocking plate 93 is rotatably arranged on the front side of the third connecting frame 92, the rapping plate 93 can be knocked out the fan housing 52 and make the dust fall more easily, and the rapping plate 93 is connected with two torsion springs 94 between all and the adjacent third link 92, and the bilateral symmetry welding in second link 81 bottom has connecting rack 91, and the equal rotary type in third link 92 rear side is equipped with the all-gear 95, all welds on the all-gear 95 and has three-tooth cam 96, and all-gear 95 all meshes with adjacent connecting rack 91.

Initially, the torsion spring 94 deforms, the second connecting frame 81 moves downwards to drive the connecting rack 91 to move downwards, the connecting rack 91 moves downwards to drive the full gear 95 to rotate, the full gear 95 rotates to drive the three-tooth cam 96 to rotate, the protruding part of the three-tooth cam 96 rotates until the protruding part does not contact with the knocking plate 93 and then continues to rotate, the knocking plate 93 rotates backwards under the action of the torsion spring 94, when the protruding part of the three-tooth cam 96 rotates until the protruding part contacts with the knocking plate 93 and then continues to rotate, the knocking plate 93 can rotate forwards, the torsion spring 94 deforms, the knocking plate 93 rotates forwards to knock the air outlet cover 52, and therefore the air outlet cover 52 vibrates, and accordingly, dust attached to the inner wall of the air outlet cover 52 can better fall down.

Referring to fig. 1, 19 and 20, still including unloading mechanism 10, unloading mechanism 10 can control the volume that corn flows, unloading mechanism 10 is including slide 101, connect roof 103, threaded rod 104 and knob 106, slide 4 upper portion slidingtype is equipped with slide 101, slide 101 can cover slide 4, slide 4 upper portion front side bilateral symmetry welding has knob 106, equal threaded form is equipped with threaded rod 104 in the knob 106, equal rotary type in threaded rod 104 top is equipped with connects roof 103, connect roof 103 all with slide 4 sliding type connection, it all contacts with slide 101 to connect roof 103.

The scooter also comprises a handle 11, and the middle of the front part of the skateboard 101 is fixedly connected with the handle 11.

When the paddy needs to be poured in front of the slideway 4, a worker can rotate the threaded rod 104 firstly, the threaded rod 104 can drive the connecting top plate 103 to move downwards under the action of the knob 106, the connecting top plate 103 moves downwards and is not matched with the slideway 4 to clamp the sliding plate 101, then the sliding plate 101 can be pulled to move forwards through the handle 11 and is not gradually covered on the slideway 4, after the sliding plate 101 is pulled to a proper position, the threaded rod 104 can be reversely rotated to drive the connecting top plate 103 to move upwards, the connecting top plate 103 can move upwards to be matched with the slideway 4 to clamp the sliding plate 101, so that the size of a feed inlet of the slideway 4 can be changed, the speed of the paddy flowing into the slideway 4 is kept in a certain range, the flowing amount of the paddy can be controlled, and when the flowing amount in one time is too much, the wind blown out by the first rotating plate 54 can not well blow away impurities such as small stones and dust.

The above description is only an example of the present invention and is not intended to limit the present invention. All equivalents which come within the spirit of the invention are therefore intended to be embraced therein. Details not described herein are within the skill of those in the art.

Claims

1. A multistage convenient dust collector of corn, including bottom plate (1), enclose frame (3) and slide (4), enclose the bottom bilateral symmetry of frame (3) and install bottom plate (1), enclose and install on frame (3) and be used for the corn to carry on the slide (4) of landing, characterized by, also include prescreening mechanism (5) and shaking mechanism (7), enclose the upper portion of frame (3) and be used for carrying on the prescreening mechanism (5) of preliminary dust removal to the corn, is equipped with the shaking mechanism (7) that can remove dust to the corn secondary between prescreening mechanism (5) and enclosing frame (3);

the primary screening mechanism (5) comprises a fan cover (51), an air outlet cover (52), a first rotating plate (54), a motor (55) and a transmission belt (56), wherein the fan cover (51) is installed on the upper side of the front part of the slideway (4), the air outlet cover (52) is installed on the upper part of the rear side of the slideway (4), the motor (55) is installed on the front side of the left part of the fan cover (51), the first rotating plate (54) capable of blowing air to primarily remove dust of paddy is rotatably arranged in the middle of the fan cover (51), and the transmission belt (56) is sleeved between the left side of the first rotating plate (54) and the left side of an output shaft of the motor (55) through the transmission wheel; the vibrating mechanism (7) comprises a single-tooth cam (71), a first connecting frame (72), a connecting frame (73), a first connecting rod (75), a first reset spring (76), an inclined hole plate (77) and a second reset spring (79), the single-tooth cam (71) is installed on the right side of the first rotating plate (54), the first connecting frame (72) is arranged on the lower side of the front portion of the slide way (4) in a sliding mode, the connecting frame (73) is installed on the lower portion of the enclosing frame (3), the first connecting rods (75) are installed on the bottom of the first connecting frame (72) in a bilateral symmetry mode, the first connecting rod (75) penetrates through the connecting frame (73) and is connected in a sliding mode, the two first reset springs (76) are connected between the bottom of the first connecting frame (72) and the connecting frame (73), the inclined hole plate (77) capable of screening corn is arranged in the sliding mode in the connecting frame (73), the four second reset springs (79) are connected between the bottom of the inclined hole plate (77) and the connecting frame (73), the first connecting rod (75) is in contact with the inclined hole plate (77), and the single-tooth cam (71) is in contact with the first connecting frame (72);

the secondary screening mechanism (6) capable of further dedusting the paddy is further included, the secondary screening mechanism (6) comprises an inclined connecting pipeline (61), a fixed hole box (64) and a movable plate (65), the fixed hole box (64) is installed on the lower side of the rear portion of the slideway (4), the movable plate (65) is arranged on the lower side of the rear portion of the fixed hole box (64) in a sliding mode, and the inclined connecting pipeline (61) is connected between the fixed hole box (64) and the slideway (4) and between the air outlet cover (52) and the slideway (4);

the air-out cover is characterized by further comprising a drawing mechanism (8) capable of scraping off dust on the inner wall of the air-out cover (52), the drawing mechanism (8) comprises a second connecting frame (81), a sliding frame (82), a second rotating plate (83), a second connecting rod (84), a third reset spring (85), a third connecting rod (86) and a locking block (87), the second connecting frame (81) is arranged on the lower portion of the air-out cover (52) in a sliding mode, the sliding frame (82) is arranged in the middle of the second connecting frame (81) in a sliding mode, two third reset springs (85) are connected between the sliding frame (82) and the second connecting frame (81), the locking blocks (87) are arranged on the bottom of the second connecting frame (81) in a sliding mode in a bilateral symmetry mode, locking piece (87) all with go out fan housing (52) block, the even rotary type in second link (81) upper portion is equipped with three groups and can scrapes second rotor plate (83) of the dust that goes out fan housing (52) inner wall, every group second rotor plate (83) figure is 2 and sets up around just, the equal bilateral symmetry rotary type in second rotor plate (83) middle part of upside is equipped with third connecting rod (86), third connecting rod (86) all are connected with carriage (82) rotary type, the equal bilateral symmetry rotary type between both sides and each other adjacent second rotor plate (83) is connected with second connecting rod (84) around.

2. The multistage convenient dust collector of corn of claim 1, characterized by further comprising a rapping mechanism (9) capable of rapping the air outlet cover (52) to enable dust to fall more easily, wherein the rapping mechanism (9) comprises a connecting rack (91), a third connecting frame (92), a rapping plate (93), a torsion spring (94), a three-tooth cam (96) and a full gear (95), the third connecting frame (92) is installed on the lower side of the rear portion of the air outlet cover (52) in a bilateral symmetry manner, the rapping plate (93) capable of rapping the air outlet cover (52) to enable dust to fall more easily is arranged on the front side of the third connecting frame (92) in a uniform rotation manner, the two torsion springs (94) are connected between the rapping plate (93) and the adjacent third connecting frame (92), the connecting rack (91) is installed on the bottom of the second connecting frame (81) in a bilateral symmetry manner, the full gear (95) is arranged on the rear side of the third connecting frame (92) in a rotation manner, the three-tooth cam (96) is installed on the full gear (95), and the full gear (95) is meshed with the adjacent connecting rack (91).

3. The multi-stage convenient and fast rice dust removal device as claimed in claim 1, further comprising a blanking mechanism (10) capable of controlling the flow amount of the rice, wherein the blanking mechanism (10) comprises a sliding plate (101), a connecting top plate (103), a threaded rod (104) and a knob (106), the sliding plate (101) capable of covering the sliding rail (4) is arranged on the upper portion of the sliding rail (4) in a sliding manner, the knob (106) is symmetrically installed on the left and right sides of the front side of the upper portion of the sliding rail (4), the threaded rod (104) is arranged in the knob (106) in a threaded manner, the connecting top plate (103) is arranged on the top of the threaded rod (104) in a rotating manner, the connecting top plate (103) is connected with the sliding rail (4) in a sliding manner, and the connecting top plate (103) is in contact with the sliding plate (101).

4. The multi-stage convenient and fast rice dedusting device as claimed in claim 3, characterized in that a handle (11) is further included, and the handle (11) is installed in the middle of the front part of the sliding plate (101).