CN114932082A

CN114932082A - Multistage convenient dust collector of corn

Info

Publication number: CN114932082A
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: 2022-08-23
Anticipated expiration: 2042-06-01
Also published as: CN114932082B

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 rice 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 husks 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 be carried out firstly in order to avoid the generation of a large amount of dust when the rice enters a storage bin to be stored.

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, a supporting seat, vibrating motor, the fixed plate, adjustable hopper structure down, the clearance seat structure is collected in adsorbable, can cup joint the deflector plate structure, U type frame, the bracing piece, the stay tube, first wing bolt, remove brake wheel and first square head bolt, this equipment passes through the bayonet socket, the collecting box, the setting of the type of falling U portable pole 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 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 not thorough 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 to install on the frame to be 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 enclose and 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 casing, air-out cover, first rotor plate, motor and driving belt, and the fan casing 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 casing left part front side, and fan casing 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, has driving belt through the drive wheel cover between first rotor plate left side and the motor output shaft left side.

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.

In addition, particularly preferably, the air-out cover comprises a drawing mechanism which can scrape 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 lower part of the air-out cover is provided with the second connecting frame in a sliding way, the middle part of the second connecting frame is provided with the sliding frame in a sliding way, two third reset springs are connected between the sliding frame and the second connecting frame, the bottom of the second connecting frame is provided with the locking block in a sliding way in a bilateral symmetry way, the locking block is clamped with the air-out cover, the upper part of the second connecting frame is provided with three groups of second rotating plates which can scrape off the dust on the inner wall of the air-out cover in a uniform rotating way, the number of each group of the second rotating plates is 2, the groups are arranged in a front-back way, the middle part of the second rotating plate on the upper side is provided with the third connecting rod in a bilateral symmetry way, and the third connecting rods are rotatably connected with the sliding frame, and the second connecting rods are rotationally connected between the front and back two adjacent second rotating plates in a bilateral symmetry manner.

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 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 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 schematic view of a second perspective construction 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 rapping 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 to 10, the vibration mechanism 7 includes a single-tooth cam 71, a first link frame 72, a link frame 73, the rice grain screening device comprises a first connecting rod 75, a first reset spring 76, an inclined hole plate 77 and a second reset spring 79, wherein a single-tooth cam 71 is fixedly connected to the right side of a first rotating plate 54, a first connecting frame 72 is arranged on the lower side of the front portion of a slide way 4 in a sliding mode, a connecting frame 73 is fixedly connected to the lower portion of a surrounding frame 3, first connecting rods 75 are fixedly connected to the bottom of the first connecting frame 72 in a bilateral symmetry mode, the first connecting rods 75 penetrate through the connecting frame 73 and are connected in a sliding mode, two first reset springs 76 are connected between the bottom of the first connecting frame 72 and the connecting frame 73, an inclined hole plate 77 is arranged in the connecting frame 73 in a sliding mode, the inclined hole plate 77 can screen rice grains, 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.

When the dust removal treatment is required to be performed 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, when the convex part of the single-tooth cam 71 rotates to be not in contact with the first connecting frame 72, the first connecting frame 72 and the first connecting rod 75 move upwards under the action of the first return spring 76 to abut against the inclined hole plate 77, under the action of the second return spring 79, the inclined hole plate 77 moves upwards to return, so that the inclined hole plate 77 can continuously move upwards and downwards by continuously rotating the first rotating plate 54, then the paddy 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, dust and the like 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 can finally fall downwards on the inclined hole plate 77, the inclined hole plate 77 can continuously move upwards and downwards to screen the paddy, the impurities such as small stones, dust and the like can pass through the inclined hole plate 77 and fall into the connecting frame 73, the paddy stays on the inclined hole plate 77, the paddy can slide backwards on the inclined hole plate 77, and the screening of the paddy can avoid the small stones mixed in the paddy from being blown away by wind, after the rice is dedusted, the motor 55 can be stopped to collect the slipping rice, and then the impurities such as small stones, dust and the like in the connecting frame 73 are cleaned.

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 rice, the secondary screening mechanism 6 comprises an inclined connecting pipeline 61, a fixed hole box 64 and a movable plate 65, the lower side of the rear portion of the slideway 4 is fixedly connected with the fixed hole box 64, 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 present invention further includes a drawing mechanism 8, the drawing mechanism 8 can scrape off dust on the inner wall of the wind-out housing 52, the drawing 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 at the lower portion of the wind-out housing 52, the sliding frame 82 is slidably disposed at the middle portion 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 left-right symmetric manner, the locking blocks 87 are all engaged with the wind-out housing 52, three sets of second rotating plates 83 are uniformly and rotatably disposed at the upper portion of the second connecting frame 81, the second rotating plates 83 can scrape off dust on the inner wall of the wind-out housing 52, each set of the second rotating plates 83 is 2 and is disposed front and back, the middle of the upper second rotating plate 83 is provided with a third connecting rod 86 in a bilateral symmetry rotation mode, the third connecting rod 86 is connected with the sliding frame 82 in a rotation mode, and the front and rear sides of the adjacent second rotating plates 83 are connected with a second connecting rod 84 in a bilateral symmetry rotation mode.

When dust slides down through the air outlet cover 52, dust may be attached to the inner wall of the air outlet cover 52, the second rotating plate 83 is initially 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 to be straight 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 to be straight 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, and when the second connecting frame 81 is completely pulled out from the air outlet cover 52, the sliding frame 82 is released, the sliding frame 82 moves upwards to reset under the action of the third reset spring 85, so that the second rotating plate 83 on the upper side is rotated and reset through the third connecting rod 86, the second rotating plate 83 on the middle side and the lower side is rotated and reset through the second connecting rod 84, then the second connecting frame 81 can be inserted back into the air outlet cover 52, and the locking block 87 is pulled to move forwards to be clamped with the air outlet cover 52 again, so that the second connecting frame 81 can be fixed.

Referring to fig. 2, 16, 17 and 19, the dust collector also comprises a knocking mechanism 9, the knocking mechanism 9 can knock the air outlet housing 52 to make dust fall more easily, the knocking mechanism 9 comprises a connecting rack 91 and a third connecting frame 92, strike board 93, torsion spring 94, tridentate cam 96 and all-gear 95, go out the welding of fan housing 52 rear portion downside bilateral symmetry and have third link 92, the equal rotary type in third link 92 front side is equipped with strikes board 93, strike board 93 and can strike and make the dust change whereabouts to going out fan housing 52, strike board 93 and be connected with two torsion spring 94 between the adjacent third link 92, the welding of second link 81 bottom bilateral symmetry has connecting rack 91, the equal rotary type in third link 92 rear side is equipped with all-gear 95, all weld on the all-gear 95 has tridentate cam 96, 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, wherein the handle 11 is fixedly connected with the middle of the front part of the sliding plate 101.

Before needs fall the corn in slide 4, the staff can rotate threaded rod 104 earlier, threaded rod 104 just can drive under knob 106's effect and connect roof 103 downstream, it no longer cooperates slide 101 chucking with slide 4 to connect roof 103 downstream, alright follow through handle 11 pulling slide 101 forward motion do not cover slide 4 gradually, alright reverse rotation threaded rod 104 drives and connects roof 103 upward movement after slide 101 stimulates to suitable position, it can cooperate slide 101 chucking with slide 4 to connect roof 103 upward movement alright, so can change the size of slide 4 feed inlet, the speed that makes the corn flow in slide 4 keeps in certain extent, thereby steerable corn inflow's volume, when avoiding disposable inflow volume too much, the wind that first rotor plate 54 blew out can't be fine blows off impurities such as pebble, 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. The utility model provides a multistage convenient dust collector of corn, including bottom plate (1), enclose frame (3) and slide (4), enclose frame (3) bottom bilateral symmetry and install bottom plate (1), enclose and install on frame (3) and be used for the corn to carry out slide (4) of landing, characterized by, still including prescreening mechanism (5) and reciprocating motion mechanism (7), enclose frame (3) upper portion and be equipped with and be used for carrying out prescreening mechanism (5) of tentatively removing dust to the corn, prescreening mechanism (5) and enclose and be equipped with reciprocating motion mechanism (7) that can remove dust to the corn secondary between frame (3).

2. The multi-stage convenient and fast rice dust removal device as claimed in claim 1, wherein the prescreening 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), the fan cover (51) is installed on the upper side of the front portion of the slide way (4), the air outlet cover (52) is installed on the upper portion of the rear side of the slide way (4), the motor (55) is installed on the front side of the left portion of the fan cover (51), the first rotating plate (54) capable of blowing air to primarily remove dust of rice 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 the output shaft of the motor (55) through the transmission wheel.

3. The multistage convenient rice dust removal device as claimed in claim 2, wherein the vibration mechanism (7) comprises a single-tooth cam (71), a first connecting frame (72), a connecting frame (73), a first connecting rod (75), a first return spring (76), an inclined hole plate (77) and a second return 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 slidably arranged on the lower side of the front part of the slideway (4), the connecting frame (73) is installed on the lower part of the enclosure frame (3), the first connecting rods (75) are symmetrically installed on the left and right of the bottom of the first connecting frame (72), 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 inclined hole plate (77) capable of screening rice is slidably arranged in the connecting frame (73), four second return 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).

4. The multistage convenient rice dust removal device as claimed in claim 2, further comprising a secondary screening mechanism (6) capable of further removing dust from rice, wherein the secondary screening mechanism (6) comprises an inclined connecting pipe (61), a fixed hole box (64) and movable plates (65), the fixed hole box (64) is mounted on the lower side of the rear portion of the slideway (4), the movable plates (65) are slidably arranged on the lower side of the rear portion of the fixed hole box (64), and the inclined connecting pipe (61) is connected between each of the fixed hole box (64) and the air outlet cover (52) and the slideway (4).

5. The multi-stage convenient rice dust removing device as claimed in claim 3, further comprising a drawing mechanism (8) capable of scraping off dust on the inner wall of the wind outlet cover (52), wherein 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 return spring (85), a third connecting rod (86) and a locking block (87), the second connecting frame (81) is slidably arranged at the lower part of the wind outlet cover (52), the sliding frame (82) is slidably arranged at the middle part 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 arranged at the bottom of the second connecting frame (81) in a left-right symmetric manner, the locking blocks (87) are respectively engaged with the wind outlet cover (52), three groups of second rotating plates (83) capable of scraping off dust on the inner wall of the wind outlet cover (52) are uniformly and rotatably arranged at the upper part of the second connecting frame (81), every group second rotor plate (83) figure is 2 and sets up for the front and back, and the equal bilateral symmetry rotary type in second rotor plate (83) middle part of upside is equipped with third connecting rod (86), and third connecting rod (86) all are connected with carriage (82) rotary type, and the equal bilateral symmetry rotary type between the preceding both sides and each other adjacent second rotor plate (83) is connected with second connecting rod (84).

6. The multistage convenient and fast rice dust removal device as claimed in claim 3, further comprising a knocking mechanism (9) capable of knocking the air outlet cover (52) to enable dust to fall more easily, wherein 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 symmetrically installed on the left and right of the lower side of the rear portion of the air outlet cover (52), the knocking plate (93) capable of knocking the air outlet cover (52) to enable dust to fall more easily is rotatably arranged on the front side of the third connecting frame (92), two torsion springs (94) are connected between the knocking plate (93) and the adjacent third connecting frame (92), the connecting racks (91) are symmetrically installed on the left and right of the bottom of the second connecting frame (81), the full gear (95) is rotatably arranged on the rear side of the third connecting frame (92), three-tooth cams (96) are arranged on all the gears (95), and all the gears (95) are meshed with the adjacent connecting racks (91).

7. 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).

8. The multi-stage convenient and fast rice dedusting device as claimed in claim 7, 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).