CN212018188U

CN212018188U - Grain wind selection shale shaker

Info

Publication number: CN212018188U
Application number: CN202020043541.3U
Authority: CN
Inventors: 贾华坡; 苏华礼
Original assignee: Zhengzhou University of Science and Technology
Current assignee: Zhengzhou University of Science and Technology
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-11-27
Anticipated expiration: 2030-01-09

Abstract

The utility model relates to a grain wind selects shale shaker, the effectual problem of having solved current shale shaker single structure, function singleness, vibratory screening efficiency low of chassis, the chassis is installed the vibratory screen mechanism that can rock on, installs feed mechanism in the vibratory screen mechanism, its characterized in that, install the magnetic plate in the vibratory screen mechanism, install negative pressure mechanism in the vibratory screen mechanism, the utility model discloses improve on current shale shaker basis, simple structure, improve convenience, easy maintenance, improved screening efficiency, possessed very strong practicality.

Description

Grain wind selection shale shaker

Technical Field

The utility model relates to a grain machinery technical field specifically is a grain wind selection shale shaker.

Background

The grain is required to be screened during harvesting and warehouse-storing or production processing, and screening before grain processing is necessary because the grain has many impurities such as grain skins, dust, broken stones, scrap iron, leaves, sticks and the like during harvesting, operation, warehouse storing and processing.

In the initial period, the grain screening tool is a dustpan, and the dustpan is shaken by two arms, so that the grain is separated from impurities due to the different densities of the grain and the impurities.

Along with the development of society, there are ripe grain sieve separator now, and more common have two kinds, firstly the shale shaker, and the shake that drives the shale shaker through the motor screens grain, and secondly the air separator falls the in-process through grain, blows impurity through the fan for grain and impurity separate.

Above two kinds of shale shakers single structure, the function is single, and the vibration screening is efficient, need carry out many times screening.

On this basis, the utility model discloses improve current shale shaker, provide a new grain selection by winnowing shale shaker.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a grain wind selection shale shaker, the effectual problem of having solved current shale shaker single structure, function singleness, vibratory screening inefficiency.

The utility model provides a grain wind selection shale shaker, includes the chassis, installs the shale shaker mechanism that can rock on the chassis, installs feed mechanism in the shale shaker mechanism, its characterized in that, install the magnetic plate in the shale shaker mechanism, install negative pressure mechanism in the shale shaker mechanism.

Preferably, the chassis includes two fore-stocks and two after-poppet, and the after-poppet height is higher than the fore-stock for vibrating screen mechanism is the decurrent angle of slope from a left side to the right side, and the crossbeam of slope is installed to fore-stock and after-poppet upper end, all installs the anchor strut between two fore-stocks and two after-poppet.

Preferably, the vibrating screen mechanism comprises a screening shell which is obliquely arranged, the inclined angle of the screening shell is the same as that of the cross beam, an upper screening net and a lower screening net are installed in the screening shell, and the filtering holes of the upper screening net are larger than those of the lower screening net.

Preferably, install four and go up the cylinder on the crossbeam inside wall, four lower cylinders that correspond the position with last cylinder are installed to the both sides of screening shell, go up the cylinder and rotate between the cylinder down and be connected with the rotation handle, be connected with the spring between the front end of screening shell and the anchor strut.

Preferably, an inclined upper discharging plate is installed at the front end of the upper screening net, an upper discharging port is installed at the upper discharging plate, an inclined lower discharging plate is installed at the front end of the lower screening net, a lower discharging port is installed at the lower discharging plate, the upper discharging plate and the lower discharging plate are in a cross inclined state, the upper discharging port and the lower discharging port are arranged on two sides of the screening shell, and a bottom discharging port is formed at the front end of a bottom plate of the screening shell.

Preferably, the feeding mechanism comprises a feeding shell arranged at the rear end of the cross beam, an opening is formed in the upper portion of the feeding shell, a feeding hole is formed in the front end of the feeding shell, and an adjusting plate is installed at the position of the feeding hole.

Preferably, the negative pressure mechanism comprises a detachable closing cover arranged on the screening shell, an upper vent hole is formed in the side wall of the closing cover, the upper vent hole is connected with an upper vent hole arranged on the ground through an upper vent bag, an upper exhaust fan is installed at the upper vent hole, a middle vent hole is formed in the side wall of the screening shell at the lower screening net, the middle vent hole is connected with a middle exhaust hole arranged on the ground through a middle exhaust bag, a middle exhaust fan is installed at the middle exhaust hole, a lower vent hole is formed in the side wall of the screening shell at the bottom plate of the screening shell, the lower vent hole is connected with a lower vent hole arranged on the ground through a lower exhaust bag, a lower exhaust fan is installed at the lower exhaust hole, the bottom plate of the screening shell is a dense net, and a plurality of air blowing fans.

Preferably, the magnetic plates are fixed on the upper screening net, the lower screening net and the bottom plate and are provided with magnetic plates, and the upper discharge port, the lower discharge port and the bottom discharge port are provided with magnetic plates.

Preferably, the screening machine further comprises a driving motor, the driving motor is connected with a disc through a rotating shaft, an eccentric column is eccentrically and fixedly arranged on the disc, a vibrating shaft is arranged on the rear wall of the screening shell, the eccentric column and the vibrating shaft are connected through a rotating arm, the rotating shaft is fixed on a reinforcing rod through a bearing seat, a first belt pulley is sleeved on the rotating shaft, the first belt pulley is connected with a second belt pulley through a belt, the second belt pulley is coaxially connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, the second bevel gear is coaxially connected with a third belt pulley, the third belt pulley is connected with a fourth belt pulley through a belt, the third belt pulley and the fourth belt pulley are respectively connected with a blowing fan, a fifth belt pulley is further sleeved on the rotating shaft, the fifth belt pulley is connected with a sixth belt pulley through a belt, the sixth belt pulley is coaxially connected with a first chain wheel, the first chain wheel, the second chain wheel and the third chain wheel are connected through a chain, and the first chain wheel, the second chain wheel and the third chain wheel are respectively connected with an upper exhaust fan, a middle exhaust fan and a lower exhaust fan.

Preferably, the side wall of the screening shell is provided with a strip hole corresponding to the upper screening net, the lower screening net and the bottom plate of the screening shell, a moving rod transversely penetrating through the screening shell is slidably mounted in the strip hole, tight bristles are mounted below the moving rod, and a telescopic pull rod penetrating through the screening shell is mounted at the rear end of the moving rod.

Compared with the prior art, the utility model, possess following technological effect:

1. through last screening net, lower screening net, screening shell bottom plate carry out multistage screening to grain for grain and impurity separation's is cleaner, and screening efficiency is higher.

2. The magnetic force plate is used for adsorbing scrap iron and removing scrap iron impurities in the grains.

3. The exhaust fan is used for carrying out negative pressure adsorption on dust, grain skins and other light impurities generated by vibration in the screening shell so as to remove the light impurities in the grains.

4. Blow to screening shell inside through the fan of blowing, the negative pressure of cooperation exhaust fan adsorbs to accelerate the clearance of negative pressure to impurity in the grain.

5. The bottom plates of the upper screening net, the lower screening net and the screening shell are cleaned through the moving rod and the bristles, so that the interior of the screening shell is conveniently cleaned.

6. The vibration of the screening shell, the starting of the exhaust fan and the blowing fan can be driven simultaneously by using one driving motor, so that the electric power is saved, and the operation is convenient.

7. The utility model discloses improve on current shale shaker basis, simple structure, improve convenient, easy maintenance, improved screening efficiency, possess very strong practicality.

Drawings

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

Fig. 2 is a schematic front view of the present invention.

Fig. 3 is a schematic left side view of the present invention.

Fig. 4 is a schematic top view of the present invention.

Fig. 5 is a schematic cross-sectional view of the upper (lower) screen of the present invention.

Fig. 6 is a schematic view of the moving rod and the brush of the present invention.

Fig. 7 is a schematic view of the driving connection of the vibrating screen mechanism and the negative pressure mechanism of the present invention.

1: a chassis; 2: a vibrating screen mechanism; 3: a feeding mechanism; 4: a magnetic plate; 5: a front bracket; 6: a rear bracket; 7: a cross beam; 8: a reinforcing rod; 9: screening shells; 10: screening by an upper screen; 11: a lower screening net; 12: an upper cylinder; 13: a lower cylinder; 14: rotating the handle; 15: a spring; 16: feeding a discharging plate; 17: a feeding hole and a discharging hole; 18: a lower discharging plate; 19: a lower discharge hole; 20: a base plate; 21: a bottom discharge hole; 22: a feed shell; 23: a feed inlet; 24: an adjusting plate; 25: a closure cap; 26: an upper vent; 27: an upper air discharging bag; 28: an upper vent; 29: an upper row of fans; 30: a middle vent hole; 31: a middle exhaust bag; 32: a middle exhaust port; 33: a middle exhaust fan; 34: a lower vent; 35: a lower air discharge bag; 36: a lower exhaust port; 37: a lower row of fans; 38: a blower fan; 39: a drive motor; 40: a rotating shaft; 41: a disc; 42: an eccentric column; 43: a vibration shaft; 44: a rotating arm; 45: a bearing seat; 46: a first pulley; 47: a second pulley; 48: a first bevel gear; 49: a second bevel gear; 50: a third belt pulley; 51: a fourth belt pulley; 52: a fifth belt pulley; 53: a sixth belt pulley; 54: a first sprocket; 55: a second sprocket; 56: a third sprocket; 57: a chain; 58: a strip hole; 59: a travel bar; 60: brushing; 61: a telescopic pull rod.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 7. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

The embodiment I, a grain wind selects shale shaker, including the chassis 1 that is used for supporting whole device, install vibrating screen mechanism 2 on chassis 1, vibrating screen mechanism 2 can rock, thereby realize the screening to grain, install feed mechanism 3 on vibrating screen mechanism 2, be used for placing the grain that carries out the screening, install magnetic plate 4 on vibrating screen mechanism 2, magnetic plate 4 has the function of adsorbed metal, thereby adsorb the metal iron fillings in the impurity, install negative pressure mechanism on vibrating screen mechanism 2, be used for taking away light impurity in the grain, the grain skin, the leaf, little stick etc. because the iron fillings in the impurity are less, magnetic plate 4 is greater than vibrating screen mechanism 2's the power of shaking to the adsorption affinity of iron fillings impurity.

Second embodiment, on the basis of first embodiment, chassis 1 includes two fore-stock 5 in the front and two after-poppet 6, two after-poppet 6 highly be higher than two fore-stock 5, this vibration sieve mechanism 2 is arranged in on after-poppet 6 and fore-stock 5 for vibration sieve mechanism 2 is the downward state of slope from a left side to the right side, crossbeam 7 is installed to the upper end of fore-stock 5 and after-poppet 6, the inclination of crossbeam 7 is the same with the inclination of vibration sieve mechanism 2, still install reinforcing rod 8 between two fore-stock 5 and two after-poppet 6.

In the third embodiment, on the basis of the second embodiment, the vibrating screen mechanism 2 includes a screening shell 9 placed obliquely, the screening shell 9 has a bottom plate 20, an opening is formed in the interior of the screening shell 9 above the cavity, the inclination angle of the screening shell 9 is the same as that of the cross beam 7, two upper screening nets 10 and two lower screening nets 11 placed up and down are installed in the screening shell 9, the filtering grade of the upper screening net 10 is smaller than that of the lower screening net 11, that is, the filtering holes of the upper screening net 10 are larger than those of the lower screening net 11.

Fourth embodiment, on the basis of third embodiment, install four upper circular columns 12 on the inside wall of two crossbeams 7, install two upper circular columns 12 on every crossbeam 7, the lower cylinder 13 of the position that corresponds with upper circular column 12 is installed to the both sides of screening shell 9, rotate between upper circular column 12 and the lower cylinder 13 and be connected with rotation handle 14, rotate handle 14 and rotate when making things convenient for screening shell 9 to vibrate, be connected with spring 15 between the front end of screening shell 9 and stiffener 8.

Fifth embodiment, on the basis of the third embodiment, an upper discharging plate 16 is installed at the front end of the upper screening net 10, an upper discharging hole 17 is installed at the upper discharging plate 16, the upper discharging plate 16 can make grains or impurities flow out from the upper discharging hole 17, and similarly, an inclined lower discharging plate 18 is installed at the front end of the lower screening net 11, a lower discharging hole 19 is installed at the lower discharging plate 18, the upper discharging plate 16 and the lower discharging plate 18 are in an inclined crossed state but not in the same plane, the upper discharging hole 17 and the lower discharging hole 19 are placed at two sides of the screening shell 9, and a bottom discharging hole 21 is opened at the front end of a bottom plate 20 of the screening shell 9.

The bottom plate 20 is used for flowing down the screened grains, the lower screening net 11 is the grains or impurities which are screened once, and the upper screening net 10 is the left impurities.

Sixth embodiment, on the basis of second embodiment, the feeding mechanism 3 includes a feeding shell 22 behind the beam 7, an opening is formed above the feeding shell 22, a feeding hole 23 is formed in the front end of the feeding shell 22, an adjusting plate 24 is installed at the feeding hole 23, the adjusting plate 24 can adjust the opening size of the feeding hole 23, and the feeding hole 23 is used for placing feeding materials.

Seventh embodiment, on the basis of the third embodiment, the negative pressure mechanism includes a sealing cover 25 detachably fastened to the screening casing 9, an upper vent hole 26 is formed in a side wall of the sealing cover 25, the upper vent hole 26 is connected to an upper vent hole 28 on the ground through an upper vent bag 27, an upper exhaust fan 29 is installed in the upper vent hole 28, a middle vent hole 30 is formed in a side wall of the screening casing 9 at the lower screening mesh 11, the middle vent hole 30 is connected to a middle vent hole 32 placed on the ground through a middle exhaust bag 31, a middle exhaust fan 33 is installed at the middle vent hole 32, a lower vent hole 34 is formed in a side wall of the screening casing 9 at the bottom plate 20 of the screening casing 9, the lower vent hole 34 is connected to a lower vent hole 36 placed on the ground through a lower vent bag 35, and a lower exhaust fan 37 is installed.

The positions of the upper vent hole 26, the middle vent hole 30 and the lower vent hole 34 can be arranged on the rear wall of the screening shell 9 besides the side wall, and the purpose is that the installation does not affect other mechanisms or installation.

The bottom plate 20 of the screening shell 9 can be a through dense net, but the dense net can not pass through grains, and can pass through air, two air blowing fans 38 blowing upwards are fixed below the dense net, and the air blowing fans 38 can blow to the bottom plate 20, the lower screening net 11 and the upper screening net 10 in the screening shell 9.

In the eighth embodiment, on the basis of the third embodiment, the magnetic plate 4 is fixed on the upper screening net 10, the lower screening net 11 and the bottom plate 20, the magnetic plate 4 has the same structure as the upper screening net 10 and the lower screening net 11, and does not affect the normal filtering function, or magnetic blocks are embedded in the upper screening net 10 and the lower screening net 11 and are used for adsorbing metal chips, in addition, the magnetic plate 4 is also installed on the upper discharging port 17, the lower discharging port 19 and the bottom discharging port 21, and the adsorption force of the magnetic plate 4 on the metal chips is greater than the shaking force of the vibrating screen mechanism 2.

The ninth embodiment is based on the seventh embodiment, and comprises a driving motor 39, the driving motor 39 is coaxially connected with a disk 41 through a rotating shaft 40, an eccentric column 42 is eccentrically fixed on the disk 41, a vibrating shaft 43 is installed on the rear wall of the screening shell 9, a rotating arm 44 is rotatably connected between the eccentric column 42 and the vibrating shaft 43, a bearing seat 45 is fixed on the rotating shaft 40, the bearing seat 45 is fixed on the reinforcing rod 8, a first belt pulley 46 is further sleeved on the rotating shaft 40, the first belt pulley 46 is connected with a second belt pulley 47 through a belt, the second belt pulley 47 is coaxially connected with a first bevel gear 48, the first bevel gear 48 is further meshed with a second bevel gear 49 for direction changing, the second bevel gear 49 is coaxially connected with a third belt pulley 50, the third belt pulley 50 is connected with a fourth belt pulley 51 through a belt, and the third belt pulley 50 and the fourth belt pulley 51 are respectively connected with a blowing fan 38 for blowing air into the screening shell 9.

The rotating shaft 40 is further sleeved with a fifth belt pulley 52, the fifth belt pulley 52 is connected with a sixth belt pulley 53 through a belt pulley, the sixth belt pulley 53 is coaxially connected with a first chain wheel 54, a second chain wheel 55 and a third chain wheel 56 are arranged in the same plane of the first chain wheel 54, the second chain wheel 55 and the third chain wheel 56 are connected through a chain 57 or adopt a traditional connection mode, namely, two chain wheels are connected and driven, the first chain wheel 54 is in driving connection with the second chain wheel 55, the second chain wheel 55 is in driving connection with the third chain wheel 56, and the first chain wheel 54, the second chain wheel 55 and the third chain wheel 56 are respectively connected with the upper exhaust fan 29, the middle exhaust fan 33 and the lower exhaust fan 37.

In the tenth embodiment, on the basis of the third embodiment, the side wall of the screening case 9 is provided with the elongated holes 58 corresponding to the upper screening net 10, the lower screening net 11, and the bottom plate 20 of the screening case 9, the positions of the elongated holes 58 do not affect the upper vent hole 26, the middle vent hole 30, and the lower vent hole 34, the moving rod 59 is slidably mounted in the elongated holes 58, the moving rod 59 penetrates through the screening case 9, the closely attached bristles 60 are mounted below the moving rod 59, and the telescopic pull rod 61 penetrating through the rear wall of the screening case 9 is mounted at the rear end of the moving rod 59.

When the screening machine is used specifically, the chassis 1 of screened grains such as wheat, corn, soybean and the like is provided with a switch for controlling the driving motor 39, the driving motor 39 is started, the driving motor 39 drives the disc 41 to rotate through the rotating shaft 40, the eccentric column 42 on the disc 41 drives the rotating arm 44 to rotate on the disc 41, the rotating arm 44 drives the vibrating shaft 43 to vibrate in a reciprocating manner, and the vibrating shaft 43 drives the screening shell 9 to vibrate in a reciprocating manner, so that the grain screening is realized.

The driving motor 39 drives the first belt pulley 46 to rotate at the same time, the first belt pulley 46 drives the second belt pulley 47 to rotate, the second belt pulley 47 drives the first bevel gear 48 to rotate, the first bevel gear 48 is changed in direction by the second bevel gear 49, the second bevel gear 49 drives the third belt pulley 50 to rotate, the third belt pulley 50 and the fourth belt pulley 51 drive the air blowing fan 38 to blow air upwards, the two sides of the air blowing fan 38 are sealed by shells, and the air blowing fan 38 blows towards the dense screen, the lower screening screen 11 and the upper screening screen 10 to blow dust, impurities and light drifts in grains.

The driving motor 39 drives the fifth belt pulley 52 at the same time, the fifth belt pulley 52 drives the sixth belt pulley 53 to rotate, the sixth belt pulley 53 drives the first chain wheel 54 to rotate, the first chain wheel 54 drives the second chain wheel 55 and the third chain wheel 57 to rotate through the chain 57, so that the upper exhaust fan 29, the middle exhaust fan 33 and the lower exhaust fan 37 respectively perform negative pressure adsorption on the upper screening net 10, the lower screening net 11 and the dense net, and impurities are adsorbed out.

Grain enters the screening shell 9 from the feeding shell 22, the size of the feeding hole 23 can be adjusted by the adjusting plate 24, the upper screening net 10 flows out from the upper discharging hole 17 and the lower discharging hole 19 respectively through primary filtration and secondary filtration of the lower screening net 11 through vibration screening of the screening shell 9, and finally screened grain flows out from the bottom discharging hole 21.

After screening is finished, the telescopic pull rod 61 is stretched, the telescopic pull rod 61 is pulled in a reciprocating mode, the brush bristles 60 respectively clean the upper screening net 10, the lower screening net 11 and the bottom plate 20 at corresponding positions, when the screen is not used, the telescopic pull rod 61 is pulled to the left end of the screening shell 9, and then the telescopic pull rod 61 is shortened.

Claims

1. The utility model provides a grain wind selection shale shaker, includes chassis (1), installs vibrating screen mechanism (2) that can rock on chassis (1), installs feed mechanism (3) on vibrating screen mechanism (2), its characterized in that, install magnetic plate (4) on vibrating screen mechanism (2), install negative pressure mechanism on vibrating screen mechanism (2).

2. The grain winnowing vibrating screen according to claim 1, characterized in that the chassis (1) comprises two front brackets (5) and two rear brackets (6), the rear brackets (6) are higher than the front brackets (5) so that the vibrating screen mechanism (2) is inclined downwards from left to right, inclined cross beams (7) are mounted at the upper ends of the front brackets (5) and the rear brackets (6), and reinforcing rods (8) are mounted between the two front brackets (5) and the two rear brackets (6).

3. The grain wind sorting vibrating screen according to claim 2, characterized in that the vibrating screen mechanism (2) comprises a screening shell (9) which is obliquely arranged, the inclination angles of the screening shell (9) and the cross beam (7) are the same, an upper screening net (10) and a lower screening net (11) are installed in the screening shell (9), and the filtering holes of the upper screening net (10) are larger than the filtering holes of the lower screening net (11).

4. The grain wind sorting vibrating screen of claim 3, characterized in that four upper cylinders (12) are installed on the inner side wall of the beam (7), four lower cylinders (13) corresponding to the upper cylinders (12) are installed on two sides of the screening shell (9), a rotating handle (14) is rotatably connected between the upper cylinders (12) and the lower cylinders (13), and a spring (15) is connected between the front end of the screening shell (9) and the reinforcing rod (8).

5. The grain wind sorting vibrating screen according to claim 3, characterized in that an inclined upper discharging plate (16) is installed at the front end of the upper screening net (10), an upper discharging hole (17) is installed at the upper discharging plate (16), an inclined lower discharging plate (18) is installed at the front end of the lower screening net (11), a lower discharging hole (19) is installed at the lower discharging plate (18), the upper discharging plate (16) and the lower discharging plate (18) are in a crossed inclined state, the upper discharging hole (17) and the lower discharging hole (19) are arranged at two sides of the screening shell (9), and a bottom discharging hole (21) is formed at the front end of a bottom plate (20) of the screening shell (9).

6. The grain wind sorting vibrating screen according to claim 2, wherein the feeding mechanism (3) comprises a feeding shell (22) arranged at the rear end of the cross beam (7), an opening is formed above the feeding shell (22), a feeding hole (23) is formed in the front end of the feeding shell (22), and an adjusting plate (24) is installed at the feeding hole (23).

7. The grain air separation vibrating screen as claimed in claim 3, wherein the negative pressure mechanism comprises a detachable closing cover (25) arranged on the screening shell (9), the side wall of the closing cover (25) is provided with an upper vent hole (26), the upper vent hole (26) is connected with an upper exhaust port (28) arranged on the ground through an upper exhaust bag (27), the upper exhaust port (28) is provided with an upper exhaust fan (29), the side wall of the screening shell (9) at the lower screening net (11) is provided with a middle vent hole (30), the middle vent hole (30) is connected with a middle exhaust port (32) arranged on the ground through a middle exhaust bag (31), the middle exhaust port (32) is provided with a middle exhaust fan (33), the side wall of the screening shell (9) at the bottom plate (20) of the screening shell (9) is provided with a lower vent hole (34), the lower vent hole (34) is connected with a lower exhaust port (36) arranged on the ground through a lower exhaust bag (35), a lower exhaust fan (37) is installed at the lower exhaust port (36), the bottom plate (20) of the screening shell (9) is a dense net, and a plurality of air blowing fans (38) blowing upwards are fixed below the dense net.

8. The grain wind sorting vibrating screen of claim 5, characterized in that the magnetic plate (4) is fixed on the upper screening net (10) and the lower screening net (11), the magnetic plate (4) is installed on the bottom plate (20), and the magnetic plate (4) is installed on the upper discharging port (17), the lower discharging port (19) and the bottom discharging port (21).

9. The grain wind sorting vibrating screen of claim 7, further comprising a driving motor (39), wherein the driving motor (39) is connected with a disc (41) through a rotating shaft (40), an eccentric column (42) is eccentrically fixed on the disc (41), a vibrating shaft (43) is installed on the rear wall of the screening shell (9), the eccentric column (42) and the vibrating shaft (43) are connected through a rotating arm (44), the rotating shaft (40) is fixed on the reinforcing rod (8) through a bearing seat (45), a first belt pulley (46) is sleeved on the rotating shaft (40), the first belt pulley (46) is connected with a second belt pulley (47) through a belt, the second belt pulley (47) is coaxially connected with a first bevel gear (48), the first bevel gear (48) is engaged with a second bevel gear (49), the second bevel gear (49) is coaxially connected with a third belt pulley (50), third belt pulley (50) is connected with fourth belt pulley (51) through the belt, is connected with fan of blowing (38) on third belt pulley (50) and fourth belt pulley (51) respectively, still the cover is equipped with fifth belt pulley (52) on pivot (40), and fifth belt pulley (52) is connected with sixth belt pulley (53) through the belt, and sixth belt pulley (53) coaxial coupling has first sprocket (54), and second sprocket (55) and third sprocket (56) have been placed in first sprocket (54) parallel, and first sprocket (54), second sprocket (55), third sprocket (56) are connected through chain (57), and first sprocket (54), second sprocket (55), third sprocket (56) are connected with last row fan (29), well exhaust fan (33), lower row fan (37) respectively.

10. The grain wind sorting vibrating screen according to claim 3, characterized in that the side wall of the screening shell (9) is provided with a long hole (58) corresponding to the upper screening net (10), the lower screening net (11) and the bottom plate (20) of the screening shell (9), a moving rod (59) transversely penetrating through the screening shell (9) is slidably mounted in the long hole (58), closely attached bristles (60) are mounted below the moving rod (59), and a telescopic pull rod (61) penetrating through the screening shell (9) is mounted at the rear end of the moving rod (59).