CN221208211U - Nanometer alumina production facility - Google Patents

Abstract

The utility model relates to the field of equipment for producing nano alumina, in particular to nano alumina production equipment which comprises a base, wherein a crushing chamber and a screening mechanism are supported on the base through a supporting plate, a feed hopper is arranged on the crushing chamber and is communicated with the inside of the crushing chamber, a crushing roller is arranged in the crushing chamber to crush materials entering from the feed hopper, the materials are screened by the screening mechanism and fall into a collecting box arranged on the base, and a circumferential scraping mechanism for scraping residual materials on the upper end face of the feed hopper is arranged at the upper end of the crushing chamber. The utility model realizes the effect of scraping the raw materials attached to the upper end of the feed hopper into the crushing chamber in the feeding process, avoids the condition that the raw materials are not completely poured, and also avoids the waste of the raw materials.

Description

Nanometer alumina production facility

Technical Field

The utility model relates to the field of equipment for producing nano alumina, in particular to nano alumina production equipment.

Background

Nano alumina is white crystalline powder, and has been proved to have eleven kinds of crystals of alpha, beta, gamma, delta, eta, theta, kappa, chi and the like, and nano alumina with different structures can be obtained by different preparation methods and process conditions: the alumina is characterized by porosity, high dispersion and high activity, and belongs to active alumina; kappa, delta, theta type alumina; alpha-Al 2O3 has low specific surface and high-temperature-resistant inertia, but does not belong to active alumina, and has almost no catalytic activity; beta-A l O3 and gamma-A l O3 have larger specific surface, high porosity, strong heat resistance, good formability, stronger surface acidity and certain surface alkalinity, and are widely used as new green chemical materials such as catalysts, catalyst carriers and the like;

In the production process of nano alumina, the bulk raw materials need to be crushed into powder so as to be processed later, and crushing equipment is needed during crushing;

for example, patent document CN213315192U discloses an apparatus for producing nano alumina. The apparatus for producing nano alumina includes: a body; crushing room, crushing room set up in the inside of organism, screening room and device groove have been seted up to the inside of organism, be provided with screening structure on the organism. The utility model provides equipment for producing nano alumina, which is characterized in that through the arrangement of the screening structure, powder is screened after the crushing is finished, the powder in the powder is screened and separated through the rotation of a centrifugal cylinder, and then the first suction pump is used for leading an input pipe to generate suction force to absorb particles remained in the centrifugal cylinder and finally convey the particles to the inside of a feed hopper, and the particles are crushed again, thereby realizing automatic recovery and crushing.

However, the above patent documents have the following disadvantages in the practical application process:

In the process of adding raw materials, the top of feeder hopper probably can adhere to a certain amount of raw materials, leads to the condition that the raw materials is added incompletely, and in the above-mentioned patent document, do not set up the scraping mechanism to the raw materials of feeder hopper top, lead to partial raw materials to adhere to the feeder hopper top, the condition that the raw materials is added incompletely appears easily, also can cause the waste of raw materials.

Disclosure of utility model

The utility model aims to provide nanometer alumina production equipment for solving the problems in the background technology.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides nanometer alumina production equipment, which comprises a base, wherein the base is supported by a supporting plate to form a crushing chamber and a screening mechanism, the crushing chamber is provided with a feed hopper which is communicated with the inside of the crushing chamber, a crushing roller is arranged in the crushing chamber to crush materials entering from the feed hopper, the materials are screened by the screening mechanism and fall into a collecting box positioned on the base, and the upper end of the crushing chamber is provided with a circumferential scraping mechanism for scraping residual materials on the upper end surface of the feed hopper;

The circumference scraping mechanism comprises a frame body fixedly connected to the crushing chamber, a connecting rod is rotatably arranged at the rear end of the frame body, the connecting rod rotates 360 degrees around the rear end of the frame body, the connecting rod is connected with a scraper blade through a connecting component, the scraper blade spans the upper end face of the feed hopper, and the tail end of the scraper blade is inclined towards the inside of the feed hopper.

The utility model further discloses the following technology:

Preferably, the rear side of the upper end face of the frame body is fixedly connected with a stepping motor, and the output end of the stepping motor is fixedly connected with the connecting rod through a pin shaft.

Preferably, the connecting assembly comprises a groove plate fixedly connected with the right end of the connecting rod, the left end of the groove plate is connected with an L-shaped block in a sliding manner through a groove, the rear end of the L-shaped block is fixedly connected with a limiting rod, the middle part of the front end face of the groove plate is fixedly connected with a third motor, the output end of the third motor is fixedly connected with a groove rod through a pin shaft, the rear side of the groove plate is embedded with a guide post in a groove and is connected with the guide post in a sliding manner, the guide post is embedded in the groove of the groove rod and is connected with the guide post in a sliding manner, and the rear end of the guide post is fixedly connected with the scraping plate.

Preferably, the third motor is started, the third motor drives the chute rod to rotate and drives the guide post to slide in the groove of the chute plate, the scraper blade slides on the limiting rod, the L-shaped block slides on the chute plate, so that the scraper blade moves in a rectangular track, when the scraper blade is at the lowest end, the scraper blade is attached to the upper end of the feed hopper, then the scraper blade is scraped from the outer side to the inner side of the upper end of the feed hopper, so that raw materials attached to the edge of the feed hopper are scraped into the feed hopper, simultaneously, when the scraper blade finishes one scraping, in the rising process, the step motor drives the connecting rod to rotate for thirty degrees, so that the scraper blade switches positions, and the raw materials attached to the other position of the upper end of the feed hopper are scraped,

Preferably, the screening mechanism comprises a screen and a double-shaft motor;

The left end of the screen is connected to the support plate in a sliding manner through the groove, the right end of the screen is hinged to the other support plate, the upper end of the support plate on the left side is fixedly connected with a spring damper, and the piston end of the spring damper is fixedly connected with the screen.

The upper end of the left side of the base is fixedly connected with a double-shaft motor, the output end of the rear side of the double-shaft motor is fixedly connected with an eccentric wheel through a rotating shaft, and the eccentric wheel is positioned below the left end of the screen and jacks up the left end of the screen through the driving of the double-shaft motor.

Preferably, the connection part of the crushing roller and the crushing chamber is connected with a gear through a pin shaft, the gears on two sides are meshed with each other, the connection part of the gear and the crushing chamber on the left side is fixedly connected with a first sprocket through a pin shaft, a third sprocket is arranged on a rotating shaft connected with the rear side output end of the double-shaft motor, and the first sprocket and the third sprocket are connected and driven through a first chain.

Preferably, the screen is a tilting mechanism with a high left end and a low right end.

Preferably, the nano alumina production apparatus further comprises a circulation conveying mechanism for re-pulverizing the raw material which is not pulverized.

Preferably, the circulating conveying mechanism comprises a long pipe positioned above the right end of the screen, a plurality of feed inlets are formed in the lower end of the long pipe, an input pipe is communicated with the middle of the right end of the long pipe, a suction pump is fixedly connected to the middle of the supporting plate on the right side, the feed end of the suction pump is communicated with the input pipe, an output pipe is communicated with the end of the suction pump, and the output pipe is communicated with the feed hopper.

Preferably, the upper end sliding connection of long tube has the dead lever, dead lever rear end fixed connection is in the backup pad, long tube front side upper end is connected with the second connecting rod through the round pin axle rotation, the second connecting rod front end is connected with first connecting rod through the round pin axle rotation, first connecting rod is connected in the base through the round pin axle rotation, the junction of first connecting rod and base is through the first bevel gear of round pin axle fixedly connected with, base front side right-hand member is connected with fourth sprocket and second bevel gear through the round pin axle rotation, second bevel gear and first bevel gear intermesh, biax motor front side output is connected with the second sprocket through the round pin axle, the second sprocket is connected with the fourth sprocket through the second chain and is driven.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. According to the utility model, raw materials are poured into the crushing chamber through the feeding hopper, the stepping motor can be started to drive the connecting rod to intermittently rotate, the rotation angle of each time is thirty degrees, the third motor is started to drive the sliding chute rod to rotate and drive the guide post to slide in the groove of the groove plate, the scraping plate slides on the limiting rod, the L-shaped block slides on the groove plate, so that the scraping plate moves in a rectangular track, when the scraping plate is at the lowest end, the scraping plate is attached to the upper end of the feeding hopper, then the scraping plate is scraped from the outer side to the inner side of the upper end of the feeding hopper, raw materials attached to the edge of the feeding hopper are scraped into the inside of the feeding hopper, meanwhile, when the scraping plate finishes one scraping, the connecting rod is driven by the stepping motor to rotate thirty degrees in the lifting process, the scraping plate is switched to position, so that raw materials attached to the other position of the upper end of the feeding hopper can fall into the feeding hopper, the pushing of raw materials attached to the upper end of the feeding hopper can be completed, the raw materials attached to the upper end of the feeding hopper can be scraped into the crushing chamber in the feeding hopper in the feeding process, the scraping process, the raw materials attached to the upper end of the feeding hopper cannot be completely scraped and the raw materials cannot be completely wasted in the scraping process, and the situation of the raw materials cannot be completely scraped and completely and the raw materials cannot be completely wasted.

2. According to the utility model, the double-shaft motor is started, the eccentric wheel is continuously rotated under the action of the output end at the rear side of the double-shaft motor, the eccentric wheel continuously extrudes the screen, the screen is restored under the action of the spring damper, the screen is vibrated, meanwhile, the crushing rollers at the two sides are simultaneously rotated in different directions under the cooperation of the first chain wheel and the gear, the crushing rollers are used for crushing raw materials, the crushed raw materials fall into the upper end of the screen, then the screen is screened under the action of vibration, and small-particle raw materials fall into the collecting box after passing through the screen, so that screening work can be completed, the crushed raw materials can be crushed, meanwhile, a screening effect is achieved on the crushed raw materials, the raw materials can be rapidly separated, and personnel can observe the crushing result conveniently.

3. According to the utility model, in the screening process, raw materials which do not pass through the screen mesh are gathered on the right side of the screen mesh, then the second bevel gear rotates under the rotation of the second sprocket, so that the first connecting rod and the second connecting rod can continuously rotate, the long pipe can form forward and backward reciprocating sliding on the fixed rod, the raw materials are sucked into the long pipe under the action of the suction pump, meanwhile, the position of the feed inlet can be changed to a certain extent under the reciprocating movement of the long pipe, the adsorption range is enlarged, meanwhile, the raw materials sucked into the long pipe are rocked, the blockage is reduced, the raw materials which are not crushed under the action of the suction pump reach the feed hopper after passing through the input pipe and the output pipe, and then secondary crushing is carried out, so that a cyclic crushing effect can be achieved on the raw materials which are not crushed, the crushing is more thorough, and the integral crushing efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is an enlarged schematic view of the area A in FIG. 1 according to the present utility model;

FIG. 3 is a schematic view of a partial perspective view of the present utility model;

FIG. 4 is an enlarged view of the area B of FIG. 1 according to the present utility model;

FIG. 5 is a schematic diagram of a partial perspective view of the present utility model;

fig. 6 is a schematic diagram of a partial three-dimensional structure of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

In the figure: 1. a pulverizing chamber; 2. a frame body; 3. a stepping motor; 4. a feed hopper; 5. an output pipe; 6. a gear; 7. a first chain; 8. a first sprocket; 9. a biaxial motor; 10. a base; 11. a second sprocket; 12. a connecting rod; 13. a groove plate; 14. an L-shaped block; 15. a third motor; 16. a scraper; 17. a limit rod; 18. a chute rod; 19. a guide post; 20. a second chain; 21. a first bevel gear; 22. a first link; 23. a second link; 24. a screen; 25. a long tube; 26. a feed inlet; 27. a fixed rod; 28. a support plate; 29. an input tube; 30. a second bevel gear; 31. a pulverizing roller; 32. a spring damper; 33. an eccentric wheel; 34. a collection box; 35. a suction pump; 36. a third sprocket; 37. a fourth sprocket; 38. a rotating shaft.

Detailed Description

The technical scheme of the utility model will be clearly explained by examples and drawings.

Referring to fig. 1-6, the utility model provides a nano alumina production device, which comprises a base 10, wherein the base 10 is supported with a crushing chamber 1 and a screening mechanism through a supporting plate 28, a feed hopper 4 is arranged on the crushing chamber 1 and is communicated with the inside of the crushing chamber 1, a crushing roller 31 is arranged in the crushing chamber 1 to crush materials entering from the feed hopper 4, the materials are screened by the screening mechanism and fall into a collecting box 34 positioned on the base, and a circumferential scraping mechanism for scraping residual materials on the upper end surface of the feed hopper 4 is arranged at the upper end of the crushing chamber 1;

The circumference scraping mechanism comprises a frame body 2 fixedly connected to the crushing chamber 1, a connecting rod 12 is rotatably arranged at the rear end of the frame body 2, the connecting rod 12 rotates 360 degrees around the rear end of the frame body 2, the connecting rod 12 is connected with a scraper 16 through a connecting component, the scraper 16 spans the upper end face of the feed hopper 4, and the tail end of the scraper 16 is inclined towards the inside of the feed hopper 4.

In this embodiment, as shown in fig. 1, 2 and 3, a stepper motor 3 is fixedly connected to the rear side of the upper end surface of the frame 2, and the output end of the stepper motor 3 is fixedly connected with a connecting rod 12 through a pin shaft;

The connecting assembly comprises a groove plate 13 fixedly connected with the right end of a connecting rod 12, the left end of the groove plate 13 is connected with an L-shaped block 14 in a sliding manner through a groove, the rear end of the L-shaped block 14 is fixedly connected with a limiting rod 17, the middle part of the front end face of the groove plate 13 is fixedly connected with a third motor 15, the output end of the third motor 15 is fixedly connected with a groove rod 18 through a pin shaft, the rear side of the groove plate 13 is embedded with a guide post 19 through a groove and is connected with the guide post in a sliding manner, the guide post 19 is embedded in the groove of the groove rod 18 and is connected with the groove in a sliding manner, and the rear end of the guide post 19 is fixedly connected with a scraper 16.

Specifically, pour the raw materials into crushing room 1 inside through feeder hopper 4, and, can start step motor 3 drive connecting rod 12 intermittent type rotation, and rotation angle is thirty degrees at every turn, and, open third motor 15, third motor 15 drives spout pole 18 and rotates, and drive guide post 19 and slide in the recess of recess board 13, scraper 16 slides on gag lever post 17, L type piece 14 slides on recess board 13, make scraper 16 do rectangular trajectory's motion, when scraper 16 is in the lower extreme, laminate with feeder hopper 4 upper end, then scrape by feeder hopper 4 upper end outside inwards and get, make the raw materials of attaching at feeder hopper 4 edge scrape to feeder hopper 4 inside, simultaneously, after scraper 16 accomplishes once and scrape the back, at the in-process of rising, drive connecting rod 12 rotation thirty degrees by step motor 3, make scraper 16 switch position, scrape the raw materials of another position of feeder hopper 4 upper end and all can fall into feeder hopper 4, can accomplish the pushing of the raw materials that attach to feeder hopper 4 upper end, thereby the raw materials that attach to the feeder hopper 4 in the time, the condition of avoiding the raw materials that is not thoroughly to fall into to the feeder hopper 1 to the side, the condition that the raw materials of the side has been scraped to the feeding room has completely avoided.

In this embodiment, as shown in fig. 1, 5 and 6, the screening mechanism includes a screen 24 and a biaxial motor 9; the screen 24 is a tilting mechanism with a high left end and a low right end.

The left end of the screen 24 is slidably connected to the support plate 28 through a groove, the right end of the screen is hinged to the other support plate, the upper end of the support plate 28 on the left side is fixedly connected with a spring damper 32, and the piston end of the spring damper 32 is fixedly connected with the screen 24.

The upper left end of the base 10 is fixedly connected with a double-shaft motor 9, the rear output end of the double-shaft motor 9 is fixedly connected with an eccentric wheel 33 through a rotating shaft, the eccentric wheel 33 is positioned below the left end of the screen 24, and the left end of the screen 24 is jacked up through the driving of the double-shaft motor 9.

Specifically, through starting biax motor 9, make eccentric wheel 33 continuously rotate under the effect of biax motor 9 rear side output, make eccentric wheel 33 constantly extrude screen cloth 24, and restore under the effect of spring damper 32, make screen cloth 24 produce vibration, simultaneously, make the crushing roller 31 of both sides simultaneously different direction rotations under the cooperation of first sprocket 8, gear 6, utilize crushing roller 31 to smash the raw materials, the raw materials after smashing falls into screen cloth 24 upper end, then screen under the effect of vibration, the raw materials of granule falls into collection box 34 inside after passing through screen cloth 24, can accomplish screening work, thereby can play a screening effect to the raw materials after smashing simultaneously, and then can be quick isolate the raw materials, also be convenient for personnel observe crushing result.

Meanwhile, in this embodiment, a crushing mechanism is driven by adopting a linkage mode, specifically, the joint of the crushing roller 31 and the crushing chamber 1 is connected with a gear 6 through a pin shaft, the gears 6 are meshed with each other on both sides, the joint of the gear 6 and the crushing chamber 1 on the left side is fixedly connected with a first sprocket 8 through a pin shaft, a rotating shaft 38 connected with the rear output end of the double-shaft motor 9 is provided with a third sprocket 36, and the first sprocket 8 and the third sprocket 36 are connected and driven through a first chain 7.

In this embodiment, as shown in fig. 1 and 4, the apparatus further includes a circulation conveying mechanism for re-pulverizing the raw material which has not been pulverized;

The circulating conveying mechanism comprises a long pipe 25 positioned above the right end of a screen 24, a plurality of feed inlets 26 are formed in the lower end of the long pipe 25, an input pipe 29 is communicated with the middle of the right end of the long pipe 25, a suction pump 35 is fixedly connected to the middle of a supporting plate 28 on the right side, the feed end of the suction pump 35 is communicated with the input pipe 29, an output pipe 5 is communicated with the discharge end of the suction pump 35, and the output pipe 5 is communicated with a feed hopper 4.

The upper end sliding connection of long tube 25 has dead lever 27, dead lever 27 rear end fixed connection is in backup pad 28, long tube 25 front side upper end is connected with second connecting rod 23 through the round pin axle rotation, second connecting rod 23 front end is connected with first connecting rod 22 through the round pin axle rotation, first connecting rod 22 is connected in base 10 through the round pin axle rotation, the junction of first connecting rod 22 and base 10 is through round pin axle fixedly connected with first bevel gear 21, base 10 front side right-hand member is connected with fourth sprocket 37 and second bevel gear 30 through the round pin axle rotation, second bevel gear 30 and first bevel gear 21 intermesh, the output of biax motor 9 front side is connected with second sprocket 11 through the round pin axle, second sprocket 11 and fourth sprocket 37 carry out the connection drive through second chain 20.

Specifically, through in the screening process, the raw materials that do not pass through screen 24 all gather on screen 24 right side, then the rotation of second bevel gear 30 under the rotation of second sprocket 11, can make first connecting rod 22 and second connecting rod 23 rotate continually, make long tube 25 form reciprocal slip around on dead lever 27, and under the effect of suction pump 35, inhale the raw materials to long tube 25, simultaneously, under the reciprocal removal of long tube 25, can make the position of feed inlet 26 take place to change to a certain extent, expand the adsorption range, make the raw materials that do not smash reach feeder hopper 4 after input tube 29, output tube 5, then carry out secondary crushing, thereby can play a cyclic crushing effect to the raw materials that do not smash, and then make smash more thoroughly, has improved holistic crushing efficiency.

The working principle of the utility model is as follows: when the device is used, raw materials are poured into the crushing chamber 1 through the feed hopper 4, the double-shaft motor 9 is started, the eccentric wheel 33 is continuously rotated under the action of the output end at the rear side of the double-shaft motor 9, the eccentric wheel 33 continuously extrudes the screen 24 and is restored under the action of the spring damper 32, the screen 24 is vibrated, meanwhile, the crushing rollers 31 at the two sides are simultaneously rotated in different directions under the cooperation of the first chain wheel 8 and the gear 6, the raw materials are crushed by the crushing rollers 31, the crushed raw materials fall into the upper end of the screen 24, then the raw materials are screened under the action of vibration, and small-particle raw materials fall into the collecting box 34 after passing through the screen 24, so that screening work can be completed, the crushed raw materials can be simultaneously screened, the crushed raw materials can be rapidly separated, and the crushed raw materials are also convenient for people to observe the crushing result; in the screening process, raw materials which do not pass through the screen 24 are all gathered on the right side of the screen 24, then the second bevel gear 30 rotates under the rotation of the second chain wheel 11, so that the first connecting rod 22 and the second connecting rod 23 can continuously rotate, the long tube 25 can form forward and backward reciprocating sliding on the fixed rod 27, the raw materials are sucked into the long tube 25 under the action of the suction pump 35, meanwhile, the position of the feed inlet 26 can be changed to a certain extent under the reciprocating movement of the long tube 25, the adsorption range is enlarged, the raw materials which are not crushed reach the feed hopper 4 after passing through the input tube 29 and the output tube 5, and then secondary crushing is carried out, so that a cyclic crushing effect can be achieved on the raw materials which are not crushed, the crushing is more thorough, and the integral crushing efficiency is improved; and, can start step motor 3 and drive connecting rod 12 intermittent type rotation, and every turn turned angle is thirty degrees, and, open third motor 15, third motor 15 drives spout pole 18 rotation, and drive guide post 19 and slide in the recess of recess 13, scraper blade 16 slides on gag lever post 17, L type piece 14 slides on recess 13, make scraper blade 16 do rectangular locus's motion, when scraper blade 16 is in the lower extreme, laminate with feeder hopper 4 upper end, then scrape from feeder hopper 4 upper end outside inwards, make the raw materials that attach at feeder hopper 4 edge scrape to feeder hopper 4 inside, simultaneously, after scraper blade 16 accomplishes once and scrape the back, at the in-process of rising, drive connecting rod 12 rotation thirty degrees by step motor 3, make scraper blade 16 switch over the position, scrape the raw materials that attach to another position of feeder hopper 4 upper end, make the raw materials of each position of feeder hopper 4 all fall into feeder hopper 4, can accomplish the promotion of the raw materials that attach to feeder hopper 4 upper end, thereby can scrape the raw materials that attach to feeder hopper 4 upper end to a chamber 1 to the in-process, the condition that the raw materials that has not completely scraped into has avoided the condition, the condition to avoid the raw materials to thoroughly to appear.

The foregoing is merely illustrative of the structures of this utility model and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the utility model or from the scope of the utility model as defined in the accompanying claims.

Claims (10)

1. A nano alumina production apparatus, comprising a base (10), characterized in that: the base (10) is supported with a crushing chamber (1) and a screening mechanism through a supporting plate (28), a feed hopper (4) is arranged on the crushing chamber (1) and is communicated with the inside of the crushing chamber (1), a crushing roller (31) is arranged in the crushing chamber (1) to crush materials entering from the feed hopper (4), the materials are screened by the screening mechanism and fall into a collecting box (34) arranged on the base, and a circumferential scraping mechanism for scraping residual materials on the upper end face of the feed hopper (4) is arranged at the upper end of the crushing chamber (1);

The circumference scraping mechanism comprises a frame body (2) fixedly connected to a crushing chamber (1), a connecting rod (12) is rotatably arranged at the rear end of the frame body (2), the connecting rod (12) rotates 360 degrees around the rear end of the frame body (2), the connecting rod (12) is connected with a scraping plate (16) through a connecting component, the scraping plate (16) spans the upper end face of the feeding hopper (4), and the tail end of the scraping plate (16) is inclined towards the inside of the feeding hopper (4).

2. The nanometer alumina production equipment according to claim 1, wherein a stepping motor (3) is fixedly connected to the rear side of the upper end face of the frame body (2), and the output end of the stepping motor (3) is fixedly connected with a connecting rod (12) through a pin shaft.

3. The nanometer alumina production equipment according to claim 2, wherein the connecting component comprises a groove plate (13) fixedly connected with the right end of the connecting rod (12), the left end of the groove plate (13) is slidably connected with an L-shaped block (14) through a groove, the rear end of the L-shaped block (14) is fixedly connected with a limit rod (17), the middle part of the front end face of the groove plate (13) is fixedly connected with a third motor (15), the output end of the third motor (15) is fixedly connected with a groove rod (18) through a pin shaft, the rear side of the groove plate (13) is embedded with a guide post (19) through a groove and is slidably connected with the guide post, the guide post (19) is embedded in the groove of the groove rod (18) and is slidably connected with the groove, and the rear end of the guide post (19) is fixedly connected with the scraper (16).

4. A nano alumina production apparatus according to claim 3, wherein the third motor (15) is started, the third motor (15) drives the chute rod (18) to rotate and drives the guide post (19) to slide in the groove of the chute plate (13), the scraper (16) slides on the limit rod (17), the L-shaped block (14) slides on the chute plate (13) so that the scraper (16) moves in a rectangular track, when the scraper (16) is at the lowest end, the scraper is attached to the upper end of the feed hopper (4), and then the raw material attached to the edge of the feed hopper (4) is scraped from the outer side to the inner side of the upper end of the feed hopper (4), meanwhile, when the scraper (16) finishes one scraping, the step motor (3) drives the connecting rod (12) to rotate thirty degrees in the lifting process, so that the scraper (16) is switched in position, and the raw material attached to the other position of the upper end of the feed hopper (4) is scraped.

5. A nano alumina production apparatus according to claim 1, wherein the screening mechanism comprises a screen (24), a biaxial motor (9);

The left end of the screen (24) is slidably connected with the supporting plate (28) through a groove, the right end of the screen is hinged with the other supporting plate, the upper end of the left supporting plate (28) is fixedly connected with the spring damper (32), and the piston end of the spring damper (32) is fixedly connected with the screen (24);

The upper end of the left side of the base (10) is fixedly connected with a double-shaft motor (9), the output end of the rear side of the double-shaft motor (9) is fixedly connected with an eccentric wheel (33) through a rotating shaft, the eccentric wheel (33) is positioned below the left end of the screen (24), and the left end of the screen (24) is jacked up through the driving of the double-shaft motor (9).

6. The nanometer alumina production equipment according to claim 5, wherein a gear (6) is connected to the joint of the crushing roller (31) and the crushing chamber (1) through a pin shaft, the gears (6) on two sides are meshed with each other, the joint of the gear (6) on the left side and the crushing chamber (1) is fixedly connected with a first sprocket (8) through a pin shaft, a third sprocket (36) is arranged on a rotating shaft (38) connected with the rear output end of the double-shaft motor (9), and the first sprocket (8) and the third sprocket (36) are connected and driven through a first chain (7).

7. A nano alumina production apparatus according to claim 5, wherein the screen (24) is a tilting mechanism with a high left end and a low right end.

8. The nano-alumina production apparatus according to claim 7, wherein: the device also comprises a circulating conveying mechanism for re-crushing the raw materials which are not crushed.

9. The nano-alumina production apparatus according to claim 8, wherein: the circulating conveying mechanism comprises a long pipe (25) positioned above the right end of the screen (24), a plurality of feeding ports (26) are formed in the lower end of the long pipe (25), an input pipe (29) is communicated with the middle of the right end of the long pipe (25), a suction pump (35) is fixedly connected with the middle of the supporting plate (28), the feeding end of the suction pump (35) is communicated with the input pipe (29), an output pipe (5) is communicated with the discharging end of the suction pump (35), and the output pipe (5) is communicated with the feeding hopper (4).

10. The nanometer alumina production equipment according to claim 9, wherein a fixing rod (27) is slidably connected to the upper end of the long tube (25), the rear end of the fixing rod (27) is fixedly connected to the supporting plate (28), the upper end of the front side of the long tube (25) is rotatably connected with a second connecting rod (23) through a pin shaft, the front end of the second connecting rod (23) is rotatably connected with a first connecting rod (22) through a pin shaft, the first connecting rod (22) is rotatably connected to the base (10) through a pin shaft, the joint of the first connecting rod (22) and the base (10) is fixedly connected with a first bevel gear (21) through a pin shaft, the right end of the front side of the base (10) is rotatably connected with a fourth sprocket (37) and a second bevel gear (30) through a pin shaft, the second bevel gear (30) is meshed with the first bevel gear (21), the front side output end of the double-shaft motor (9) is connected with a second sprocket (11) through a pin shaft, and the second sprocket (11) is connected with the fourth sprocket (37) through a second chain (20) for driving.