CN215141850U

CN215141850U - Multilayer drum-type fine grain classifying screen

Info

Publication number: CN215141850U
Application number: CN202121071485.5U
Authority: CN
Inventors: 彭勇; 陈佳
Original assignee: Wuhan Magi Industrial Design Co ltd
Current assignee: Wuhan Magi Industrial Design Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-12-14
Anticipated expiration: 2031-05-18

Abstract

The utility model relates to the technical field of screening equipment, in particular to a multilayer drum-type fine grain classifying screen which improves the screening speed of a device and the using effect of the device by self-transmission screening of a drum, a first screening cylinder and a second screening cylinder and the stirring of materials through a fourth rotating shaft and a stirring plate; the automatic feeding device comprises a base, adjusting device, the rotor plate, first motor, first initiative bevel gear, first driven bevel gear, first axis of rotation, first fixed plate, the cylinder, first sieve feed cylinder, the second sieve feed cylinder, T type slider, the second fixed plate, two sets of belt pulleys, the belt, the second axis of rotation, second initiative bevel gear, two sets of bevel gear, the third axis of rotation, the fixed block, the driven bevel gear of second, fourth axis of rotation and two sets of stirring boards, the rotor plate passes through adjusting device and is connected with the base, first motor is fixed in rotor plate top left side, the output and the first initiative bevel gear of first motor are connected.

Description

Multilayer drum-type fine grain classifying screen

Technical Field

The utility model relates to a technical field of screening equipment especially relates to a multilayer drum-type fine grain classifying screen.

Background

A multilayer drum-type fine particle classifying screen is an auxiliary device for screening materials, which is widely used in the field of screening equipment; the rotation that current multilayer drum-type fine grain classifying screen was simple through the cylinder sieves the material step by step, leads to the speed of material screening slower, leads to the result of use of device relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a pass sieve material certainly through cylinder, first sieve feed cylinder and second sieve feed cylinder to and through fourth axis of rotation and stirring board to the stirring of material, improve the sieve material speed of device, improve the multilayer drum-type fine grain classifying screen of its result of use.

The utility model relates to a multilayer drum-type fine grain classifying screen, which comprises a base, an adjusting device, a rotating plate, a first motor, a first driving bevel gear, a first driven bevel gear, a first rotating shaft, a first fixing plate, a roller, a first screening cylinder, a second screening cylinder, a T-shaped slider, a second fixing plate, two groups of belt pulleys, a belt, a second rotating shaft, a second driving bevel gear, two groups of bevel gears, a third rotating shaft, a fixing block, a second driven bevel gear, a fourth rotating shaft and two groups of stirring plates, wherein the rotating plate is connected with the base through the adjusting device, the first motor is fixed on the left side of the top end of the rotating plate, the output end of the first motor is connected with the first driving bevel gear, the first driving bevel gear is in meshing transmission connection with the first driven bevel gear, the first driven bevel gear is fixed on the left end of the first rotating shaft, the first rotating shaft is in rotation connection with the middle part of the first fixing plate, the first fixed plate is fixed on the left side of the top end of the rotating plate, the right end of the first rotating shaft is connected with the middle part of the left end of the roller, the first screening cylinder is fixed inside the roller, the second screening cylinder is fixed inside the first screening cylinder, the bottom end of the second screening cylinder is provided with a feeding pipe, the bottoms of the right ends of the roller, the first screening cylinder and the second screening cylinder are provided with a discharging pipe, the feeding pipe and the discharging pipe are provided with control valves, the T-shaped sliding block is fixed on the upper part of the right end of the roller, the second fixed plate is fixed on the right side of the top end of the rotating plate, the middle part of the left end of the second fixed plate is provided with a circular sliding chute, the T-shaped sliding block is slidably clamped with the second fixed plate, two groups of belt pulleys are respectively fixed on the first rotating shaft and the second rotating shaft and are positioned on the left side of the first rotating shaft, and are connected through belt transmission, and the second rotating shaft is rotatably connected with the first fixed plate and the second fixed plate, and the second driving bevel gear is fixed at the right end of the second rotating shaft, two groups of bevel gears are respectively fixed at the upper end and the lower end of the third rotating shaft, the second driving bevel gear is in meshed transmission connection with the bevel gear at the upper part, the third rotating shaft is in rotary connection with the fixing block, the fixing block is fixed at the upper part of the right end of the second fixing plate, the second driven bevel gear is in meshed transmission connection with the bevel gear at the lower part, the second driven bevel gear is fixed at the right end of the fourth rotating shaft, the fourth rotating shaft is in synchronous rotary connection with the second fixing plate, the roller, the middle parts of the first screening cylinder and the second screening cylinder, and two groups of stirring plates are respectively fixed at the upper side and the lower side of the fourth rotating shaft and are in contact with the inner side wall of the second screening cylinder.

The utility model relates to a multilayer drum-type fine grain classifying screen, an adjusting device comprises a second motor, a third driving bevel gear, a third driven bevel gear, a screw shaft, a slide block, a swing rod, two groups of connecting blocks, a fixed supporting rod, a collecting box and a collecting drawer, the second motor is fixed on the left side of the top end of a base, the output end of the second motor is connected with the third driving bevel gear, the third driving bevel gear is in meshing transmission connection with the third driven bevel gear, the third driven bevel gear is fixed on the bottom of the screw shaft, the screw shaft is rotationally connected with the left side of the top end of the base, the slide block is in threaded connection with the screw shaft, one end of the swing rod is rotationally connected with the front end of the slide block through a rotating shaft, the other end is rotationally connected with one group of connecting blocks through a rotating shaft, the two groups of connecting blocks are respectively fixed on the left side and the right side of a rotating plate, the fixed supporting rod is hinged with the connecting block on the right side through a rotating shaft, the fixed support rod is fixed on the right side of the top end of the base, the collecting box is fixed on the right side of the top end of the rotating plate and connected with the second fixing plate, the collecting drawer is connected with the collecting box in a sliding mode, and a handle is arranged at the front end of the collecting drawer.

The utility model discloses a multilayer drum-type fine grain classifying screen still includes multiunit supporting leg, multiunit cushion and multiunit rag bolt, and the multiunit supporting leg is evenly fixed in the bottom of base, and the bottom at the supporting leg is fixed to the cushion passes through rag bolt with ground and is connected.

The utility model discloses a hierarchical sieve of multilayer drum-type fine grain still includes the protection casing, and the right-hand member upper portion at the second fixed plate is fixed to the protection casing to cover second initiative bevel gear, third axis of rotation, fixed block and the driven bevel gear of second.

The utility model discloses a multilayer drum-type fine grain classifying screen still includes two sets of stoppers, and two sets of sliders are fixed respectively in the top and the bottom of lead screw axle.

The utility model discloses a multilayer drum-type fine grain classifying screen, first motor and second motor are amortization motor.

Compared with the prior art, the beneficial effects of the utility model are that: the first motor drives the first driving bevel gear to rotate, the first driving bevel gear is in meshing transmission connection with the first driven bevel gear, the first driven bevel gear drives the first rotating shaft to rotate, so that the first rotating shaft drives the roller, the first screening material barrel and the second screening material barrel to rotate under the matching use of the T-shaped sliding block and the second fixing plate, meanwhile, the first rotating shaft drives the belt pulleys to rotate, the two groups of belt pulleys are in transmission connection through the belt, so that the second rotating shaft drives the second driving bevel gear to rotate, the second driving bevel gear is in meshing transmission connection with the bevel gear on the upper portion, the third rotating shaft drives the bevel gear on the lower portion to rotate, the bevel gear on the lower portion is in meshing transmission connection with the second driven bevel gear, so that the fourth rotating shaft drives the two groups of stirring plates to rotate, the materials are screened through the self-transmission of the roller, the first screening material barrel and the second screening material barrel, and the materials are stirred through the fourth rotating shaft and the stirring plates, the material screening speed of the device is improved, and the using effect of the device is improved.

Drawings

FIG. 1 is a schematic view of the front view and a partial sectional structure of the present invention;

fig. 2 is an enlarged schematic view of the utility model at a;

fig. 3 is an enlarged schematic view of the utility model at B;

in the drawings, the reference numbers: 1. a base; 2. a rotating plate; 3. a first motor; 4. a first drive bevel gear; 5. a first driven bevel gear; 6. a first rotating shaft; 7. a first fixing plate; 8. a drum; 9. a first screen cylinder; 10. a second screen cylinder; 11. a T-shaped slider; 12. a second fixing plate; 13. a belt pulley; 14. a belt; 15. a second rotating shaft; 16. a second drive bevel gear; 17. a bevel gear; 18. a third rotating shaft; 19. a fixed block; 20. a second driven bevel gear; 21. a fourth rotating shaft; 22. a stirring plate; 23. a second motor; 24. a third drive bevel gear; 25. a third driven bevel gear; 26. a screw shaft; 27. a slider; 28. a swing rod; 29. connecting blocks; 30. fixing the support rod; 31. a collection box; 32. a collection drawer; 33. supporting legs; 34. cushion blocks; 35. anchor bolts; 36. a protective cover; 37. and a limiting block.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 3, the multi-layer drum-type fine particle classifying screen of the present invention comprises a base 1, an adjusting device, a rotating plate 2, a first motor 3, a first driving bevel gear 4, a first driven bevel gear 5, a first rotating shaft 6, a first fixing plate 7, a drum 8, a first screen cylinder 9, a second screen cylinder 10, a T-shaped slider 11, a second fixing plate 12, two sets of belt pulleys 13, a belt 14, a second rotating shaft 15, a second driving bevel gear 16, two sets of bevel gears 17, a third rotating shaft 18, a fixing block 19, a second driven bevel gear 20, a fourth rotating shaft 21 and two sets of stirring plates 22, wherein the rotating plate 2 is connected with the base 1 through the adjusting device, the first motor 3 is fixed on the left side of the top end of the rotating plate 2, the output end of the first motor 3 is connected with the first driving bevel gear 4, and the first driving bevel gear 4 is in meshing transmission connection with the first driven bevel gear 5, the first driven bevel gear 5 is fixed at the left end of the first rotating shaft 6, the first rotating shaft 6 is rotatably connected with the middle part of the first fixing plate 7, the first fixing plate 7 is fixed at the left side of the top end of the rotating plate 2, the right end of the first rotating shaft 6 is connected with the middle part of the left end of the roller 8, the first screening cylinder 9 is fixed inside the roller 8, the second screening cylinder 10 is fixed inside the first screening cylinder 9, the bottom end of the second screening cylinder 10 is provided with a feeding pipe, the bottom parts of the right ends of the roller 8, the first screening cylinder 9 and the second screening cylinder 10 are all provided with a discharging pipe, the feeding pipe and the discharging pipe are all provided with control valves, the T-shaped slide block 11 is fixed at the upper part of the right end of the roller 8, the second fixing plate 12 is fixed at the right side of the top end of the rotating plate 2, the middle part of the left end of the second fixing plate 12 is provided with a circular chute, the T-shaped slide block 11 is slidably clamped with the second fixing plate 12, two sets of belt pulleys 13 are respectively fixed on the first rotating shaft 6 and the second rotating shaft 15 and positioned on the left side of the first rotating shaft 6, the two sets of belt pulleys 13 are in transmission connection through a belt 14, the second rotating shaft 15 is in transmission connection with the first fixing plate 7 and the second fixing plate 12 and positioned above the roller 8, the second driving bevel gear 16 is fixed on the right end of the second rotating shaft 15, the two sets of bevel gears 17 are respectively fixed on the upper and lower ends of the third rotating shaft 18, the second driving bevel gear 16 is in meshing transmission connection with the upper bevel gear 17, the third rotating shaft 18 is in transmission connection with a fixing block 19, the fixing block 19 is fixed on the upper portion of the right end of the second fixing plate 12, the second driven bevel gear 20 is in meshing transmission connection with the lower bevel gear 17, the second driven bevel gear 20 is fixed on the right end of the fourth rotating shaft 21, the fourth rotating shaft 21 is in transmission connection with the second fixing plate 12, The middle parts of the roller 8, the first screening barrel 9 and the second screening barrel 10 are synchronously connected in a rotating way, and two groups of stirring plates 22 are respectively fixed on the upper side and the lower side of a fourth rotating shaft 21 and are in contact with the inner side wall of the second screening barrel 10; the first motor 3 drives the first driving bevel gear 4 to rotate, the first driving bevel gear 4 is in meshed transmission connection with the first driven bevel gear 5, the first driven bevel gear 5 drives the first rotating shaft 6 to rotate, the first rotating shaft 6 drives the roller 8, the first screening cylinder 9 and the second screening cylinder 10 to rotate under the matching use of the T-shaped sliding block 11 and the second fixing plate 12, meanwhile, the first rotating shaft 6 drives the belt pulleys 13 to rotate, the two groups of belt pulleys 13 are in transmission connection through the belt 14, the second rotating shaft 15 drives the second driving bevel gear 16 to rotate, the second driving bevel gear 16 is in meshed transmission connection with the bevel gear 17 on the upper part, the third rotating shaft 18 drives the bevel gear 17 on the lower part to rotate, the bevel gear 17 on the lower part is in meshed transmission connection with the second driven bevel gear 20, and the fourth rotating shaft 21 drives the two groups of stirring plates 22 to rotate, through the self-transmission sieve material of cylinder 8, first sieve feed cylinder 9 and second sieve feed cylinder 10 to and through the stirring of fourth axis of rotation 21 and stirring board 22 to the material, improve the sieve material speed of device, improve the result of use of device.

The utility model relates to a multilayer drum-type fine grain classifying screen, adjusting device includes second motor 23, third drive bevel gear 24, third driven bevel gear 25, screw shaft 26, slider 27, pendulum rod 28, two sets of connecting blocks 29, fixed support rod 30, collecting box 31 and collection drawer 32, second motor 23 is fixed on the left side of the top end of base 1, the output end of second motor 23 is connected with third drive bevel gear 24, and third drive bevel gear 24 is connected with third driven bevel gear 25 meshing transmission, third driven bevel gear 25 is fixed in the bottom of screw shaft 26, screw shaft 26 is connected with the left side of the top end of base 1 in a rotating way, and slider 27 is connected with screw shaft 26 in a screw-mounting way, one end of pendulum rod 28 is connected with the front end of slider 27 in a rotating way through the pivot, the other end is connected with a set of connecting blocks 29 in a rotating way through the pivot, and two sets of connecting blocks 29 are fixed on the left and right sides of the bottom of rotating plate 2 respectively, the fixed support rod 30 is hinged with the right connecting block 29 through a rotating shaft, the fixed support rod 30 is fixed on the right side of the top end of the base 1, the collecting box 31 is fixed on the right side of the top end of the rotating plate 2 and is connected with the second fixing plate 12, the collecting drawer 32 is in sliding connection with the collecting box 31, and the front end of the collecting drawer 32 is provided with a handle; drive third drive bevel gear 24 through second motor 23 and rotate, third drive bevel gear 24 is connected with third driven bevel gear 25 meshing transmission, make third driven bevel gear 25 drive screw shaft 26 and rotate, thereby make slider 27 reciprocate, and then make rotor plate 2 at cylinder 8, connecting block 29 and fixed stay bar 30's cooperation is used down, the certain angle of slope right, and manually open cylinder 8 in proper order, the control valve on first sieve feed cylinder 9 and the second sieve feed cylinder 10, make collecting box 31 and collection drawer 32 progressively collect cylinder 8 in proper order, the material in first sieve feed cylinder 9 and the second sieve feed cylinder 10, be convenient for the quick collection of material, improve the use convenience of device.

The utility model discloses a multilayer drum-type fine grain classifying screen, still include multiunit supporting leg 33, multiunit cushion 34 and multiunit rag bolt 35, multiunit supporting leg 33 evenly fixes in the bottom of base 1, cushion 34 fixes in the bottom of supporting leg 33, and cushion 34 passes through rag bolt 35 with ground and is connected; through setting up supporting leg 33, cushion 34 and rag bolt 35, take place skew or slope when avoiding the device to use, improve the stability in use of device.

The utility model discloses a multilayer drum-type fine grain classifying screen, still include protection casing 36, protection casing 36 is fixed in the right-hand member upper portion of second fixed plate 12, and cover second drive bevel gear 16, bevel gear 17, third axis of rotation 18, fixed block 19 and second driven bevel gear 20; through setting up protection casing 36, protect second initiative bevel gear 16, bevel gear 17, third axis of rotation 18, fixed block 19 and second driven bevel gear 20, avoid appearing colliding with the damage, ensure the steady operation of device.

The utility model discloses a multilayer drum-type fine grain classifying screen, which also comprises two groups of limiting blocks 37, wherein two groups of sliding blocks 27 are respectively fixed at the top end and the bottom of a lead screw shaft 26; through setting up stopper 37, carry on spacingly to slider 27, avoid slider 27 roll-off screw shaft 26, also avoid slider 27 and third driven bevel gear 25 to collide with each other simultaneously, further improve the stability in use of device.

The utility model discloses a multilayer drum-type fine grain classifying screen, wherein a first motor 3 and a second motor 23 are both silencing motors; through setting up amortization motor, noise pollution reduces, further improves the result of use of device.

The utility model discloses a multilayer drum-type fine grain classifying screen, it is at work, at first drive bevel gear 4 through first motor 3 and rotate, first drive bevel gear 4 meshes the transmission with first driven bevel gear 5 and is connected, make first driven bevel gear 5 drive first axis of rotation 6 and rotate, thereby make first axis of rotation 6 drive cylinder 8 under the cooperation use of T type slider 11 and second fixed plate 12, first sieve feed cylinder 9 and second sieve feed cylinder 10 rotate, first axis of rotation 6 drives belt pulley 13 and rotates simultaneously, connect through belt 14 transmission between two sets of belt pulleys 13, make second axis of rotation 15 drive second drive bevel gear 16 and rotate, second drive bevel gear 16 meshes the transmission with bevel gear 17 on the upper portion and is connected, make third axis of rotation 18 drive bevel gear 17 of lower part and rotate, bevel gear 17 and the meshing transmission of second driven bevel gear 20 of lower part are connected, and then the fourth rotating shaft 21 drives the two groups of stirring plates 22 to rotate, the materials are automatically sieved through the roller 8, the first sieving cylinder 9 and the second sieving cylinder 10, and the materials are stirred through the fourth rotating shaft 21 and the stirring plates 22, so that the sieving speed of the device is improved, the using effect of the device is improved, then the third driving bevel gear 24 is driven to rotate through the second motor 23, the third driving bevel gear 24 is meshed with the third driven bevel gear 25 for transmission connection, the third driven bevel gear 25 drives the screw shaft 26 to rotate, so that the slide block 27 is moved up and down, the rotating plate 2 is further inclined to the right by a certain angle under the matching use of the roller 8, the connecting block 29 and the fixed support rod 30, and the control valves on the roller 8, the first sieving cylinder 9 and the second sieving cylinder 10 are manually opened in sequence, so that the collecting box 31 and the collecting drawer 32 sequentially and gradually collect the roller 8, the materials, The material in first sieve feed cylinder 9 and the second sieve feed cylinder 10, the quick collection of the material of being convenient for, improve the use convenience of device, then through setting up supporting leg 33, cushion 34 and rag bolt 35, take place skew or slope when avoiding the device to use, improve the stability in use of device, and through setting up protection casing 36, to second initiative bevel gear 16, bevel gear 17, third axis of rotation 18, fixed block 19 and the driven bevel gear 20 of second protect, avoid appearing the damage of colliding with, ensure the steady operation of device.

The utility model discloses a multilayer drum-type fine grain classifying screen, its mounting means, connected mode or set up the mode and be common mechanical system, as long as can reach all can implement of its beneficial effect.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A multi-layer drum-type fine particle classifying screen is characterized by comprising a base (1), an adjusting device, a rotating plate (2), a first motor (3), a first driving bevel gear (4), a first driven bevel gear (5), a first rotating shaft (6), a first fixing plate (7), a drum (8), a first screening cylinder (9), a second screening cylinder (10), a T-shaped sliding block (11), a second fixing plate (12), two groups of belt pulleys (13), a belt (14), a second rotating shaft (15), a second driving bevel gear (16), two groups of bevel gears (17), a third rotating shaft (18), a fixing block (19), a second driven bevel gear (20), a fourth rotating shaft (21) and two groups of stirring plates (22), wherein the rotating plate (2) is connected with the base (1) through the adjusting device, the first motor (3) is fixed on the left side of the top end of the rotating plate (2), the output end of a first motor (3) is connected with a first driving bevel gear (4), the first driving bevel gear (4) is in meshing transmission connection with a first driven bevel gear (5), the first driven bevel gear (5) is fixed at the left end of a first rotating shaft (6), the first rotating shaft (6) is in rotating connection with the middle part of a first fixing plate (7), the first fixing plate (7) is fixed at the left side of the top end of a rotating plate (2), the right end of the first rotating shaft (6) is connected with the middle part of the left end of a roller (8), the first screening cylinder (9) is fixed inside the roller (8), a second screening cylinder (10) is fixed inside the first screening cylinder (9), the bottom end of the second screening cylinder (10) is provided with a feeding pipe, the bottoms of the right ends of the roller (8), the first screening cylinder (9) and the second screening cylinder (10) are provided with a feeding pipe, and the discharging pipe and a control valve is arranged on the feeding pipe and the discharging pipe, the T-shaped sliding block (11) is fixed on the upper portion of the right end of the roller (8), the second fixing plate (12) is fixed on the right side of the top end of the rotating plate (2), a circular sliding groove is formed in the middle of the left end of the second fixing plate (12), the T-shaped sliding block (11) is in sliding clamping with the second fixing plate (12), two groups of belt pulleys (13) are respectively fixed on the first rotating shaft (6) and the second rotating shaft (15) and located on the left side of the first rotating shaft (6), the two groups of belt pulleys (13) are in transmission connection through a belt (14), the second rotating shaft (15) is in rotating connection with the first fixing plate (7) and the second fixing plate (12) and located above the roller (8), a second driving bevel gear (16) is fixed on the right end of the second rotating shaft (15), the two groups of bevel gears (17) are respectively fixed at the upper end and the lower end of a third rotating shaft (18), the second driving bevel gear (16) is in meshed transmission connection with a bevel gear (17) on the upper portion, a third rotating shaft (18) is in rotating connection with a fixing block (19), the fixing block (19) is fixed on the upper portion of the right end of a second fixing plate (12), a second driven bevel gear (20) is in meshed transmission connection with the bevel gear (17) on the lower portion, the second driven bevel gear (20) is fixed on the right end of a fourth rotating shaft (21), the fourth rotating shaft (21) is in synchronous rotating connection with the middle portions of the second fixing plate (12), the roller (8), the first screening cylinder (9) and the second screening cylinder (10), and two groups of stirring plates (22) are fixed on the upper side and the lower side of the fourth rotating shaft (21) respectively and are in contact with the inner side wall of the second screening cylinder (10).

2. The multi-layered drum-type fine particle classifying screen according to claim 1, wherein the adjusting means comprises a second motor (23), a third driving bevel gear (24), a third driven bevel gear (25), a screw shaft (26), a slider (27), a swing link (28), two sets of connecting blocks (29), a fixed support bar (30), a collection box (31) and a collection drawer (32), the second motor (23) is fixed to the left side of the top end of the base (1), the output end of the second motor (23) is connected to the third driving bevel gear (24), the third driving bevel gear (24) is in mesh transmission connection with the third driven bevel gear (25), the third driven bevel gear (25) is fixed to the bottom of the screw shaft (26), the screw shaft (26) is rotatably connected to the left side of the top end of the base (1), and the slider (27) is screw-coupled to the screw shaft (26), the one end of pendulum rod (28) is connected through the pivot rotation with the front end of slider (27), the other end also rotates through the pivot with a set of connecting block (29) and is connected, and the left and right sides in rotor plate (2) bottom is fixed respectively in two sets of connecting block (29), fixed stay bar (30) are articulated through the pivot with connecting block (29) on right side, fixed stay bar (30) are fixed on the top right side of base (1), and top right side in rotor plate (2) is fixed in collecting box (31), and be connected with second fixed plate (12), and collect drawer (32) and collecting box (31) sliding connection, the front end of collecting drawer (32) is provided with the handle.

3. A multi-deck drum-type fine particle classifying screen as claimed in claim 2, further comprising a plurality of sets of supporting legs (33), a plurality of sets of spacers (34) and a plurality of sets of anchor bolts (35), wherein the plurality of sets of supporting legs (33) are uniformly fixed to the bottom end of the base (1), the spacers (34) are fixed to the bottom ends of the supporting legs (33), and the spacers (34) are connected to the ground through the anchor bolts (35).

4. A multi-deck drum type fine particle classifying screen as set forth in claim 3, further comprising a protective cover (36), the protective cover (36) being fixed to an upper portion of a right end of the second fixing plate (12) and covering the second driving bevel gear (16), the bevel gear (17), the third rotating shaft (18), the fixing block (19) and the second driven bevel gear (20).

5. A multi-deck drum-type fine particle classifying screen as claimed in claim 4, further comprising two sets of stoppers (37), and two sets of sliding blocks (27) fixed to the top and bottom of the screw shaft (26), respectively.

6. A multi-deck roller type fine particle classifying screen as claimed in claim 5, wherein the first motor (3) and the second motor (23) are noise reduction motors.