CN210632473U

CN210632473U - Winnowing machine feeding device for screening iron powder

Info

Publication number: CN210632473U
Application number: CN201921577223.9U
Authority: CN
Inventors: 周鹏
Original assignee: Nanjing Best Metal Materials Co Ltd
Current assignee: Nanjing Best Metal Materials Co Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-05-29
Anticipated expiration: 2029-09-20

Abstract

The utility model discloses an air separator feeding device for screening iron powder, which comprises a base arranged on one side of an air separator, a lifting frame arranged on the base, a lifting machine which inclines to the ground on the lifting frame, a blanking hopper which is arranged at the higher end of the lifting frame and is positioned in the discharging direction of the lifting machine, a feeding hopper which is positioned above the feeding direction of the lifting machine and a material shaking plate which is hinged on the side wall of the feeding hopper, wherein a blanking space is reserved between the bottom end of the material shaking plate and the side wall of the feeding hopper, a driving component which drives the material shaking plate to rotate along the hinged joint of the material shaking plate is arranged on the base, an adjusting component which drives the lifting frame to lift along the height direction of the; this feed arrangement replaces the manpower to the even material loading of material, and labour saving and time saving has improved work efficiency, avoids the dust to diffuse, influences workman's is healthy.

Description

Winnowing machine feeding device for screening iron powder

Technical Field

The utility model relates to a technical field of iron powder screening installation, in particular to air separator feed arrangement for screening iron powder.

Background

During the screening of iron powder, the screening is performed with winnowing machine, which is also called winnowing crusher and consists of main machine, blower, separator, powder collector, dust collector and other parts, and the main machine is divided into crushing chamber, blocking chamber and blower chamber.

In order to ensure a better winnowing effect, materials need to be uniformly or uniformly put into the winnowing machine in unit time, at present, generally, operators frequently put the materials into a feed hopper of the winnowing machine, and because the uniform feeding of the materials is controlled by manual operation, the time and the labor are consumed, and the labor intensity of workers is greatly increased; in the actual production process, a large amount of dust is filled around the winnowing machine, so that the dust is diffused in the production process, the health of operators is not facilitated, and the working efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a selection by winnowing machine feed arrangement for screening iron powder, its advantage is: this feed arrangement replaces the manpower to the even material loading of material, and labour saving and time saving has improved work efficiency, avoids the dust to diffuse, influences workman's is healthy.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a selection by winnowing machine feed arrangement for screening iron powder, including setting up base, the crane of setting on the base in selection by winnowing machine one side, to ground slope lifting machine on the crane, install the higher one end of crane and be located lifting machine ejection of compact direction's lower hopper, be located lifting machine material loading side feeder hopper and articulate and tremble the flitch on the feeder hopper deviates from the crane lateral wall, it has the unloading space to tremble to reserve between the bottom of flitch and the lateral wall of feeder hopper, it shakes flitch along its pin joint pivoted drive assembly to be equipped with the drive on the base, be equipped with the drive crane along the adjusting part that its direction of height goes up and down on the base, be equipped with the.

According to the technical scheme, the lifting frame is adjusted to a proper height by the adjusting assembly; secondly, fixing the blanking on the lifting frame by utilizing the mounting assembly; then, a worker places the material in the feed hopper, and the material falls onto the hoister through the blanking space; meanwhile, in the discharging process, the driving assembly is used for driving the material shaking plate to rotate, so that the size of a discharging space can be adjusted, the discharging speed of the material is effectively controlled, and the material can be uniformly charged; by adjusting the height of the lifting frame, personnel can conveniently install blanking hoppers with different sizes and specifications, the blanking speed of materials can be controlled, the distance between the blanking hoppers and the feeding hole can be further adjusted, the distance between the materials falling into the feeding hole is reduced, and dust is prevented from being diffused; adopt the feed arrangement that above-mentioned structure constitutes, replace the manpower to the even material loading of material, labour saving and time saving has improved work efficiency, can avoid the dust to diffuse simultaneously, influences workman's is healthy.

The utility model discloses further set up to: the lifting frame comprises two rows of first stand columns and second stand columns which are oppositely arranged on the base in a pairwise mode, and a cross beam arranged between the adjacent first stand columns and the adjacent second stand columns, and the height size of each first stand column is smaller than that of each second stand column.

Through above-mentioned technical scheme, the height dimension of second stand is greater than the height dimension of first stand, and then can set up the lifting machine slope to the material of lifting machine with low department is carried to the eminence, and then makes things convenient for personnel's material loading, labour saving and time saving.

The utility model discloses further set up to: the driving assembly comprises a 20866a supporting block arranged on the base, a rotating rod arranged between two opposite vertical side walls of the supporting block and opposite to the axial direction of the base, two positioning plates arranged between the two opposite vertical side walls of the supporting block oppositely, a rotating column arranged between the two positioning plates and in the same direction as the axial direction of the base, a rack sliding on the bottom wall of the horizontal end of the supporting block and in the same direction as the axial direction of the base, a fan-shaped fluted disc connected with the rotating rod in a rotating mode and meshed with the rack, a connecting rod connected with the fan-shaped fluted disc, a sliding block arranged at one end, far away from the fan-shaped fluted disc, of the connecting rod and a first motor driving the rotating column to rotate, a spiral annular groove for the sliding block to slide is formed in the peripheral wall of the rotating column along the axial direction of the rotating column, a.

Through the technical scheme, the first motor is started, the rotating column rotates, the spiral ring groove has a limiting effect on the movement of the sliding block, the sliding block slides in the spiral ring groove along with the rotation of the rotating column, the bottom end of the connecting rod is driven to linearly slide along the horizontal end of the supporting block, the motion track of the bottom end of the connecting rod is in the same direction as the axial direction of the base, the fan-shaped fluted disc rotates to drive the rack to slide, and the material shaking plate can stably rotate due to the fact that one end of the rack slides in the sliding groove, so that the size of a blanking space can be adjusted, and the blanking speed of materials can be controlled; this driving method utilizes the rotation of rotating the post, alright realize sliding of rack, and the drive shakes the flitch and rotates, and then the size in steerable unloading space can finally replace the manpower to the even material loading of material, labour saving and time saving has improved work efficiency.

The utility model discloses further set up to: the base is internally provided with a cavity, the adjusting assembly comprises fluted discs, toothed belts, screws, bevel gear sets and a second motor, the fluted discs are oppositely arranged on the inner bottom wall of the cavity in a rotating mode, the toothed discs drive the toothed belts to rotate, the screws are arranged at the axle centers of the top walls of the fluted discs, the bevel gear sets are arranged at the axle centers of one of the bottom walls of the fluted discs, the second motor drives the bevel gear sets to rotate, the top ends of the screws extend out of the top wall of the base, and threaded holes matched with the screws in a threaded mode are formed in the.

According to the technical scheme, the second motor is started, the bevel gear set rotates, one fluted disc rotates, the other fluted discs are driven to synchronously rotate through the toothed belt, and further the screw rod is driven to rotate; simultaneously, the distance between the lower hopper and the feed inlet of the air separator can be adjusted, so that the situation that dust is diffused in the feeding process can be prevented, and the influence on the health of workers is avoided.

The utility model discloses further set up to: the installation component comprises connecting plates which are obliquely arranged on the opposite side walls of the two cross beams towards the ground, supporting rods which are arranged on the opposite side walls of the two connecting plates and are opposite to the axial direction of the second stand column, connecting blocks and screws which are arranged on the supporting rods and are far away from one end of the hopper, the side walls of the connecting blocks are provided with mounting holes matched with the screws in a threaded mode, the side walls of the connecting plates are provided with through holes corresponding to the mounting holes, and the screws are sequentially inserted into the through holes and the mounting holes from outside to inside.

Through the technical scheme, the screws are sequentially inserted into the through holes and the mounting holes from outside to inside, so that the connecting plate can be fixed on the side wall of the cross beam, and the blanking hopper can be fixed on the cross beam; this mounting means, simple structure, convenient operation.

The utility model discloses further set up to: the horizontal end bottom wall of supporting shoe is equipped with the guide way along its axial, the rack deviates from the lateral wall of its sawtooth and is equipped with the guide block that slides in the guide way.

Through above-mentioned technical scheme, the cooperation of guide way and guide block plays spacing and direction effect to sliding of rack, and then makes the rack can stably slide, has improved the stability of rack process of sliding.

The utility model discloses further set up to: the screw rod is sleeved with a spring, the bottom end of the spring is fixed to the top wall of the base, and the top end of the spring is fixed to the bottom walls of the first stand column and the second stand column.

Through above-mentioned technical scheme, the setting of spring plays limiting displacement to the lift of first stand and second stand, and then has improved the stability of first stand and second stand lift process.

The utility model discloses further set up to: the diameter of the material opening at the top end of the feeding hopper is larger than that of the material opening at the bottom end of the feeding hopper.

Through above-mentioned technical scheme, the material mouth diameter size of hopper bottom is less than the material mouth diameter size on its top down, and then has reduced the speed of material unloading, and then has improved the stability of unloading process.

To sum up, the utility model discloses following beneficial effect has:

1. firstly, the lifting frame is adjusted to a proper height by utilizing an adjusting assembly; secondly, fixing the blanking on the lifting frame by utilizing the mounting assembly; then, a worker places the material in the feed hopper, and the material falls onto the hoister through the blanking space; meanwhile, in the discharging process, the driving assembly is used for driving the material shaking plate to rotate, so that the size of a discharging space can be adjusted, the discharging speed of the material is effectively controlled, and the material can be uniformly charged; by adjusting the height of the lifting frame, personnel can conveniently install blanking hoppers with different sizes and specifications, the blanking speed of materials can be controlled, the distance between the blanking hoppers and the feeding port can be further adjusted, the distance between the materials falling into the blanking port is reduced, and dust diffusion is avoided; the feeding device with the structure replaces manpower to evenly feed materials, saves time and labor, improves the working efficiency, and can avoid dust diffusion to influence the health of workers;

2. the first motor is started, the rotating column rotates, the spiral ring groove has a limiting effect on the movement of the sliding block, the sliding block slides in the spiral ring groove along with the rotation of the rotating column, the bottom end of the connecting rod is driven to linearly slide along the horizontal end of the supporting block, the movement track of the bottom end of the connecting rod is in the same direction as the axial direction of the base, the fan-shaped fluted disc rotates to drive the rack to slide, and one end of the rack slides in the sliding groove, so that the material shaking plate can stably rotate, the size of a blanking space can be adjusted, and the blanking speed of materials can be controlled; according to the driving mode, the sliding of the rack can be realized by utilizing the rotation of the rotating column, the material shaking plate is driven to rotate, the size of the blanking space can be further controlled, and the material can be uniformly fed instead of manpower finally, so that the time and labor are saved, and the working efficiency is improved;

3. the setting of spring plays limiting displacement to the lift of first stand and second stand, and then has improved the stability of first stand and second stand lift process.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a schematic sectional view showing the positional relationship between the drive unit and the feed hopper in the present embodiment.

Fig. 3 is a schematic sectional structural view for showing the positional relationship between the slider and the spiral groove in the drive assembly.

FIG. 4 is a side cross-sectional structural schematic view for a body mount.

FIG. 5 is a top cross-sectional structural schematic view for embodying an adjustment assembly.

Fig. 6 is a schematic sectional structural view for showing a positional relationship between the mounting assembly and the lower hopper.

Reference numerals: 1. a base; 2. a lifting frame; 201. a first upright post; 202. a second upright post; 203. a cross beam; 3. a hoist; 4. feeding a hopper; 5. a feed hopper; 6. shaking the material plate; 7. a blanking space; 8. a drive assembly; 81. a support block; 82. rotating the rod; 83. rotating the column; 84. a rack; 85. a fan-shaped fluted disc; 86. a connecting rod; 87. a slider; 88. a first motor; 89. positioning a plate; 9. an adjustment assembly; 91. a fluted disc; 92. a toothed belt; 93. a screw; 94. a bevel gear set; 95. a second motor; 10. mounting the component; 101. A strut; 102. connecting blocks; 103. a screw; 104. a connecting plate; 11. a limiting block; 12. a spiral ring groove; 13. a chute; 14. a cavity; 15. mounting holes; 16. a through hole; 17. a guide groove; 18. a guide block; 19. a spring; 20. a winnowing machine; 21. a feed inlet; 22. a bearing block; 23. a threaded bore.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

a winnowing machine feeding device for screening iron powder, referring to fig. 1, comprises a winnowing machine 20 and a feeding hole 21 arranged on the top wall of the winnowing machine 20; the materials are placed into the winnowing machine 20 through the feeding hole 21, and then the screening of the materials is realized.

Referring to fig. 1, a base 1 is arranged on one side of a winnowing machine 20, a lifting frame 2 inclined to the ground is arranged on the base 1, a lifting machine 3 is arranged on the lifting frame 2, a blanking hopper 4 is arranged at the higher end of the lifting frame 2, L-shaped bearing blocks 22 are arranged on two sides of the base 1, a feeding hopper 5 is arranged between the side walls of the horizontal ends of the two bearing blocks 22, a discharging port of the feeding hopper 5 is positioned above the lower end of the lifting machine 3, and a discharging port of the blanking hopper 4 is positioned below the higher end of the lifting machine 3 and above a feeding port 21; because the height of the winnowing machine 20 is high, the hoister 3 can replace manpower to convey materials at a lower position to the upper side, and the materials are discharged to the feeding hole 21 through the discharging hopper 4, so that the materials are finally fed, time and labor are saved, and the feeding efficiency is improved.

Referring to fig. 1, the crane 2 includes two rows of first upright columns 201 and second upright columns 202 which are oppositely arranged on the base 1, and a cross beam 203 arranged between the two adjacent first upright columns 201 and the second upright columns 202, the height of the first upright column 201 is smaller than that of the second upright column 202, so that the elevator 3 is obliquely arranged, the elevator 3 can convey materials at a low position to a high position, and the personnel can conveniently feed the materials, and the time and the labor are saved.

Referring to fig. 1 and 2, a material shaking plate 6 is hinged to one side wall of the feed hopper 5, which is far away from the lifting frame 2, a blanking space 7 is reserved between the bottom end of the material shaking plate 6 and the feed hopper 5, a driving assembly 8 for driving the material shaking plate 6 to rotate back and forth along a hinge point of the material shaking plate is arranged on the base 1, an adjusting assembly 9 for driving the lifting frame 2 to lift along the height direction of the lifting frame is arranged on the base 1, and an installation assembly 10 for fixing the blanking hopper 4 is arranged on the lifting; firstly, the crane 2 is adjusted to a proper height by using an adjusting component 9; secondly, fixing the blanking on the lifting frame 2 by using the mounting assembly 10; then, a worker places the material in the feed hopper 5, and the material falls onto the hoister 3 through the blanking space 7; meanwhile, in the discharging process, the driving assembly 8 is used for driving the material shaking plate 6 to rotate, so that the size of the discharging space 7 can be adjusted, the discharging speed of the material is effectively controlled, and the uniform feeding of the material is achieved; by adjusting the height of the lifting frame 2, personnel can conveniently install the blanking hoppers 4 with different sizes and specifications, the blanking speed of the materials can be controlled, the distance between the blanking hoppers 4 and the feeding hole 21 can be further adjusted, the distance between the materials falling into the feeding hole 21 is reduced, and dust diffusion is avoided; adopt the feed arrangement that above-mentioned structure constitutes, replace the manpower to the even material loading of material, labour saving and time saving has improved work efficiency, can avoid the dust to diffuse simultaneously, influences workman's is healthy.

Referring to fig. 2, the diameter of the material opening at the top end of the discharging hopper 4 is larger than that of the material opening at the bottom end of the discharging hopper, so that the material discharging speed is reduced, and the stability of the discharging process is improved.

Referring to fig. 2 and 3, the driving assembly 8 includes a 20866a type supporting block 81 disposed on the base 1, a rotating rod 82 disposed between two vertical opposite sidewalls of the supporting block 81, a positioning plate 89 disposed between the two vertical opposite sidewalls of the supporting block 81 and below the rotating rod 82, a rotating post 83 rotatably disposed between the two opposite sidewalls of the positioning plate 89 and axially opposite to the rotating rod 82, a rack 84 sliding on the horizontal end bottom wall of the supporting block 81 and axially facing the base 1, a sector-shaped toothed plate 85 fitted over the rotating rod 82 and engaged with the rack 84, a connecting rod 86 connected to the sector-shaped toothed plate 85, a slider 87 disposed at one end of the connecting rod 86 away from the sector-shaped toothed plate 85, and a first motor 88 driving the rotating post 83 to rotate, the rotating rod 82 axially facing the base 1, a spiral ring groove 12 for the slider 87 to slide along the circumferential wall of the rotating post 83, the side wall of the material shaking plate 6 is provided with a sliding groove 13 along the length direction, and one end of the rack 84 facing the material shaking plate 6 is provided with a limiting block 11 sliding in the sliding groove 13; the first motor 88 is started, the rotating column 83 rotates, the spiral ring groove 12 has a limiting effect on the movement of the sliding block 87, the sliding block 87 slides in the spiral ring groove 12 along with the rotation of the rotating column 83, the bottom end of the connecting rod 86 is driven to linearly slide along the horizontal end of the supporting block 81, the movement track of the bottom end of the connecting rod 86 is in the same direction as the axial direction of the base 1, the fan-shaped fluted disc 85 rotates to drive the rack 84 to slide, the sliding chute 13 has a limiting effect on the sliding of the limiting block 11, and the material shaking plate 6 is driven to stably rotate, so that the size of the blanking space 7 can be adjusted, and the blanking speed of materials can be controlled; this driving method utilizes the rotation of rotating post 83, alright realize sliding of rack 84, and the drive is trembled flitch 6 and is rotated, and then the size in steerable unloading space 7, can replace the manpower finally to the even material loading of material, labour saving and time saving has improved work efficiency.

Referring to fig. 2 and 3, the bottom wall of the horizontal end of the supporting block 81 is provided with a guide groove 17 along the axial direction thereof, and the top wall of the rack 84 is provided with a guide block 18 sliding in the guide groove 17; the cooperation of guide way 17 and guide block 18 plays the guide effect to sliding of rack 84 for rack 84 can stably slide, and then makes the flitch 6 of trembling can stably rotate.

Referring to fig. 4 and 5, a cavity 14 is formed in the base 1, the adjusting assembly 9 includes toothed discs 91 rotatably disposed at four corners of an inner bottom wall of the cavity 14, a toothed belt 92 for driving the toothed discs 91 to rotate, a screw 93 disposed at an axis of a top wall of the toothed discs 91, a bevel gear set 94 disposed at an axis of a bottom wall of one of the toothed discs 91, and a second motor 95 for driving vertical bevel gears in the bevel gear set 94 to rotate, horizontal bevel gears in the bevel gear set 94 are rotatably connected with the inner bottom wall of the cavity 14, top ends of the 4 screws 93 extend out of the top wall of the base 1, and bottom walls of the first upright 201 and the second upright 202 are respectively provided with a threaded hole 23 in threaded fit with the screw 93 in an extending; the second motor 95 is started to drive the bevel gear set 94 to rotate, so as to drive one of the fluted discs 91 to rotate, and the toothed belt 92 drives the other fluted discs 91 to synchronously rotate, so as to drive the screw 93 to rotate, and due to the threaded fit between the threaded hole 23 and the screw 93 and the arrangement of the four screws 93, the first upright column 201 and the second upright column 202 are driven to lift along the length direction of the screw 93 along with the forward and reverse rotation of the screw 93, so as to achieve the height adjustment of the discharging hopper 4 (fig. 1); the adjusting mode is convenient to operate, the discharging hopper 4 (shown in figure 1) is adjusted to a proper height by controlling the rotation of the screw rod 93, and a worker can conveniently install the discharging hopper 4 (shown in figure 1); meanwhile, the distance between the discharging hopper 4 (figure 1) and the feeding hole 21 (figure 1) can be reduced, and the phenomenon that the dust is diffused and the health of workers is influenced due to overhigh material discharging height is avoided.

Referring to fig. 1 and 4, springs 19 are sleeved at one ends of the 4 screws 93 above the base 1, the top ends of the springs 19 are fixed to the top wall of the base 1, the bottom ends of the 4 springs 19 are respectively fixed to the top wall of the base 1, and the top ends of the 4 springs 19 are respectively fixed to the bottom walls of the first upright 201 and the second upright 202; the arrangement of the spring 19 has a limiting effect on the lifting of the first upright column 201 and the second upright column 202, so that the stability of the lifting process of the first upright column 201 and the second upright column 202 is improved.

Referring to fig. 1 and 6, the mounting assembly 10 includes connecting plates 104 respectively disposed at the higher ends of the two beams 203 and inclined toward the ground, supporting rods 101 disposed at the opposite side walls of the two connecting plates 104 and opposite to the axial direction of the second vertical column 202, connecting plates 104 disposed at the ends of the supporting rods 101 far away from the discharging hopper 4, and screws 103, wherein the side walls of the connecting plates 104 are provided with a plurality of through holes 16, and the side walls of the connecting blocks 102 are provided with mounting holes 15 corresponding to the through holes 16; when the hopper is installed, the screws 103 are firstly inserted into the through holes 16 and the installation holes 15 from outside to inside in sequence, and then the connecting block 102 can be fixed on the connecting plate 104, so that the hopper 4 is installed; this mounting means, simple structure makes things convenient for the dismouting, and the personnel of being convenient for change the lower hopper 4 of different dimensions to the unloading speed of control material can avoid the dust to diffuse, influences personnel's healthy.

The working process is as follows: firstly, the screw 103 is sequentially inserted into the through hole 16 and the threaded hole 23 from outside to inside, so that the blanking hopper 4 can be fixed below the discharging direction of the elevator 3, then the second motor 95 is started, the bevel gear set 94 rotates to drive one of the fluted discs 91 to rotate, the other fluted discs 91 can be driven to synchronously rotate through the serrated belt 92 to drive the screw 93 to rotate, and then the first upright column 201 and the second upright column 202 are lifted to a proper height along the length direction of the screw 93, so that the distance between the blanking hopper 4 and the feeding hole 21 can be adjusted to a proper position; then, the first motor 88 is started, the rotating column 83 rotates, and the sliding block 87 slides in the spiral ring groove 12, so that the fan-shaped fluted disc 85 is driven to rotate, the rack 84 slides, the material shaking plate 6 is driven to rotate, the size of the blanking space 7 is adjusted, and the blanking speed of the material is controlled; and finally, the materials are conveyed into a discharging hopper 4 through a lifting machine 3, and the uniform feeding of the materials is finally realized.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a selection by winnowing machine feed arrangement for screening iron powder which characterized in that: comprises a base (1) arranged on one side of a winnowing machine (20), a lifting frame (2) arranged on the base (1), a lifting machine (3) which inclines towards the ground on the lifting frame (2), a blanking hopper (4) which is arranged at the higher end of the lifting frame (2) and is positioned in the discharging direction of the lifting machine (3), a feeding hopper (5) which is positioned above the feeding direction of the lifting machine (3) and a material shaking plate (6) which is hinged on the side wall of the feeding hopper (5) away from the lifting frame (2), a blanking space (7) is reserved between the bottom end of the material shaking plate (6) and the side wall of the feed hopper (5), a driving component (8) for driving the material shaking plate (6) to rotate along the hinged joint is arranged on the base (1), the base (1) is provided with an adjusting component (9) for driving the lifting rack (2) to lift along the height direction thereof, the lifting frame (2) is provided with an installation component (10) for fixing the discharging hopper (4).

2. The feeding device of a winnowing machine for screening iron powder according to claim 1, characterized in that: the lifting frame (2) comprises two rows of first upright columns (201) and second upright columns (202) which are oppositely arranged on the base (1) in a pairwise manner, and a cross beam (203) arranged between the adjacent first upright columns (201) and the adjacent second upright columns (202), wherein the height of each first upright column (201) is smaller than that of each second upright column (202).

3. The feeding device of a winnowing machine for screening iron powder according to claim 1, characterized in that: the driving component (8) comprises a 20866a type supporting block (81), a rotating rod (82) which is arranged between two vertical opposite side walls of the supporting block (81) and is opposite to the axial direction of the base (1), two positioning plates (89) which are oppositely arranged between the vertical opposite side walls of the supporting block (81), a rotating column (83) which is rotatably arranged between the two positioning plates (89) and is in the same axial direction with the base (1), a rack (84) which slides on the bottom wall of the horizontal end of the supporting block (81) and is in the same axial direction with the base (1), a fan-shaped fluted disc (85) which is rotatably connected with the rotating rod (82) and is meshed with the rack (84), a connecting rod (86) which is connected with the fan-shaped fluted disc (85), a sliding block (87) which is arranged at one end of the connecting rod (86) far away from the fan-shaped fluted disc (85), and a first motor (88) which drives the rotating column (83) to rotate, wherein a spiral annular groove (12) for the sliding block, the side wall of the material shaking plate (6) is provided with a sliding groove (13) along the length direction, and one end of the rack (84) is provided with a limiting block (11) which slides in the sliding groove (13).

4. The feeding device of a winnowing machine for screening iron powder according to claim 2, characterized in that: be equipped with cavity (14) in base (1), adjusting part (9) include two liang of relative rotations set up fluted disc (91) of diapire in cavity (14), drive a plurality of fluted disc (91) pivoted sawtooth belts (92), set up screw rod (93) in fluted disc (91) roof axle center department, set up bevel gear group (94) and drive bevel gear group (94) pivoted second motor (95) of one of them fluted disc (91) diapire axle center department, the top of screw rod (93) extends outside the roof of base (1), the diapire of first stand (201) and second stand (202) all is equipped with screw hole (23) with screw rod (93) screw-thread fit.

5. The feeding device of a winnowing machine for screening iron powder according to claim 2, characterized in that: installation component (10) including to ground slope setting connecting plate (104) on two crossbeam (203) relative lateral walls, set up at two connecting plate (104) relative lateral walls and with second stand (202) axial reversal's branch (101), set up connecting block (102) and screw (103) of hopper (4) one end down keeping away from in branch (101), two the lateral wall of connecting block (102) all is equipped with mounting hole (15) with screw (103) screw-thread fit, the lateral wall of connecting plate (104) is equipped with through-hole (16) corresponding with mounting hole (15), screw (103) are by outer in inserting through-hole (16), mounting hole (15) in proper order to.

6. The feeding device of a winnowing machine for screening iron powder according to claim 3, characterized in that: the horizontal end bottom wall of supporting shoe (81) is equipped with guide way (17) along its axial, the lateral wall that rack (84) deviates from its sawtooth is equipped with guide block (18) that slides in guide way (17).

7. The feeding device of an air classifier for screening fine iron according to claim 4, wherein: the screw rod (93) is sleeved with a spring (19), the bottom end of the spring (19) is fixed to the top wall of the base (1), and the top end of the spring (19) is fixed to the bottom walls of the first upright column (201) and the second upright column (202).

8. The feeding device of a winnowing machine for screening iron powder according to claim 1, characterized in that: the diameter of the material opening at the top end of the discharging hopper (4) is larger than that of the material opening at the bottom end of the discharging hopper.