Stock bin automatic screening device for nano calcium carbonate production

Abstract

The utility model relates to the technical field of nano calcium carbonate production, in particular to an automatic bin screening device for nano calcium carbonate production, which comprises a bin body, the top surface of the bin body is communicated with a feed hopper, a screen plate is arranged at the upper end in the bin body, and two rotating shafts are fixedly arranged on the screen plate in a symmetrical structure. A first screen is mounted at one end of the top face of the screen plate, a second screen is mounted at the other end of the top face of the screen plate, a first triangular stop block is fixedly arranged in the middle of the top face of the screen plate, a second triangular stop block is fixedly arranged on the right side of the top face of the screen plate, and a servo motor is mounted on the left wall of the stock bin body through a mounting base. An output shaft of the servo motor penetrates through the outer wall of the stock bin body and extends to the inner wall of the stock bin body. According to the utility model, the screening effect is improved, the waste of materials is reduced, the production cost is reduced, the continuity and high efficiency of screening are ensured, and a powerful guarantee is provided for the continuous and stable production of nano calcium carbonate.

Description

Technical Field

[0001] The utility model relates to the technical field of nano calcium carbonate production, in particular to an automatic screening device for a silo used in the production of nano calcium carbonate. Background Art

[0002] Nano calcium carbonate, also known as ultrafine calcium carbonate or ultrafine calcium carbonate, can improve the rheological properties of plastic masterbatch and enhance its formability. When used as a plastic filler, it has the effect of toughening and reinforcing, improving the plastic's flexural strength and flexural elastic modulus, heat deformation temperature and dimensional stability, while also giving the plastic thermal hysteresis.

[0003] After searching, the Chinese utility model patent with publication number CN218108413U discloses an automatic screening device for silos used in the production of nano-calcium carbonate, including an unpowered screen. The unpowered screen mainly consists of a shell with an open top and a sieve plate arranged obliquely in the shell. The shell has an inlet, an outlet for undersize material and an outlet for oversize material. The sieve plate includes a first sieve and a second sieve, which are hingedly connected to each other. A sieve plate placement protrusion is provided in the shell. By utilizing the flippable feature of the sieve, when products that meet the requirements are put into the production line, the screening step can be skipped directly and the next process can be carried out directly, thereby speeding up the production rhythm.

[0004] However, during use, the inside of the silo used for nano-calcium carbonate production is usually screened through a screen. When the screen is screened for a long time, some of the sieve holes are easily clogged, affecting the screening effect and possibly causing obstruction of the production process. In order to ensure the normal operation of the screen, the screen needs to be cleaned or replaced regularly. However, frequent replacement of the screen undoubtedly increases production costs and is not conducive to the realization of automatic screening of the silo used for nano-calcium carbonate production. Utility Model Content

[0005] In response to the deficiencies in the prior art, the utility model provides an automatic screening device for a silo used in the production of nano-calcium carbonate, which solves the technical problem that the interior of a silo used in the production of nano-calcium carbonate is usually screened through a screen, and when the screen is screened for a long time, some of the sieve holes are easily clogged, affecting the screening effect and possibly causing obstruction of the production process. In order to ensure the normal operation of the screen, the screen needs to be cleaned or replaced regularly. However, frequent replacement of the screen undoubtedly increases production costs and is not conducive to achieving automatic screening of the silo used in the production of nano-calcium carbonate.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an automatic screening device for a silo for producing nano-calcium carbonate, comprising a silo body, the top surface of the silo body is connected to a feed hopper, the upper upper end of the silo body is provided with a sieve plate, and the sieve plate is symmetrically structured and fixed with two rotating shafts, and the rotating shafts are rotatably connected to the silo body, one end of the top surface of the sieve plate is provided with a first screen, and the other end of the top surface of the sieve plate is provided with a second screen, a first triangular stop is fixedly provided in the middle of the top surface of the sieve plate, and a second triangular stop is fixedly provided on the right side of the top surface of the sieve plate, a servo motor is installed on the left wall of the silo body through a mounting seat, the output shaft of the servo motor passes through the outer wall of the silo body and extends to the inner wall, an eccentric wheel is sleeved on the output shaft of the servo motor, the outer wall of the eccentric wheel is suitable for friction with the bottom surface of the sieve plate, the lower end of the silo body is symmetrically structured and has two discharge ports, and the bottom surface of the sieve plate is provided with an anti-blocking mechanism, and the silo body is a silo for producing nano-calcium carbonate.

[0007] As a preferred solution of the automatic screening device for nano-calcium carbonate production in the utility model, the aperture of the first screen is smaller than the aperture of the second screen, a leak-proof plate is fixedly provided on the left inner wall of the silo body, the bottom surface of the leak-proof plate is adapted to contact the bottom surface of the left end of the sieve plate, and a waste material port is opened in the middle of the right wall of the silo body.

[0008] Through the above technical solution, the nano-calcium carbonate production material with smaller particle size passes through the sieve holes of the first sieve and falls into the lower left end of the silo body, and the nano-calcium carbonate production material with larger particle size passes through the sieve holes of the second sieve and falls into the lower right end of the silo body.

[0009] As a preferred solution of the automatic screening device for nano-calcium carbonate production in the utility model, a diverter block is fixedly provided on the bottom surface of the middle part of the sieve plate, a folded cloth is fixedly provided in the middle part of the diverter block, and the bottom surface of the diverter block is fixedly provided on the bottom surface of the inner part of the silo body.

[0010] Through the above technical solution, the screen plate vibrates and drives the diverter block at the upper end to move synchronously. At this time, the folding and expansion of the folding cloth reduces the mixing of the nano-calcium carbonate production materials after screening inside the silo body.

[0011] As a preferred solution of the automatic screening device for nano-calcium carbonate production in the utility model, the bottom surface of the inner part of the silo body is symmetrically structured with two tilting blocks, and the tilting blocks are both fixedly connected to the outer wall of the lower end of the diversion block.

[0012] Through the above technical solution, the nano calcium carbonate production materials with different particle sizes after screening are discharged to the outside from the two discharge ports through the two inclined blocks.

[0013] As a preferred solution of the automatic screening device for nano-calcium carbonate production silo described in the utility model, wherein: the anti-blocking mechanism includes a hollow back-blowing block, the top surface of the hollow back-blowing block is slidably connected to the bottom surface of the screen plate, the lower side of the screen plate is symmetrically structured with two sliding rods, and the sliding rods are symmetrically structured with two fixed blocks, the top surface of the fixed block is connected and fixed to the bottom surface of the screen plate, the front and rear ends of the hollow back-blowing block are slidably connected to the sliding rod, and the hollow back-blowing blocks are symmetrically structured with two.

[0014] As a preferred solution of the automatic screening device for nano-calcium carbonate production silo described in the utility model, wherein: a push block is fixedly provided on the bottom surface of the front end of one of the hollow back-blowing blocks, an electric push rod is installed on the front end of the bottom of the sieve plate through a mounting seat, the piston rod of the electric push rod passes through the diverter block and is connected and fixed to the push block, and the piston rod of the electric push rod is slidably connected to the diverter block.

[0015] Through the above technical solution, the piston rod of the electric push rod pushes the push block to move, so that the push block drives the two hollow back-blowing blocks to slide along the slide rod, so that the two hollow back-blowing blocks slide along the bottom surfaces of the first screen and the second screen respectively, thereby cleaning the sieve holes of the first screen and the second screen.

[0016] As a preferred solution of the automatic screening device for nano-calcium carbonate production silo described in the utility model, a connecting pipe is connected between the two hollow backflush blocks, the connecting pipe is slidably connected to the upper end of the diversion block, and a spray groove is opened on the top surface of the hollow backflush block.

[0017] As a preferred solution of the automatic screening device for nano-calcium carbonate production silo of the utility model, the bottom surface of the other hollow back-flushing block is connected to a conveying pipe, and the conveying pipe is connected to a telescopic hose.

[0018] As a preferred solution of the automatic screening device for nano-calcium carbonate production in the utility model, a blower is installed on the rear wall of the silo body through a mounting seat, the output end of the blower passes through the outer wall of the silo body and extends to the interior, and the output end of the blower is connected to a telescopic hose.

[0019] Through the above technical solution, the blower sucks and compresses the external air and then delivers it to the inside of the telescopic hose through the output end, and then delivers the high-pressure air to the inside of the hollow back-blowing block through the delivery pipe and the connecting pipe. At this time, the high-pressure air is ejected from the two injection slots to the upper end respectively, and the ejected high-pressure air flushes the sieve holes of the first screen and the second screen.

[0020] Beneficial effects of the utility model:

[0021] 1. In the present invention, the nano calcium carbonate production material that needs to be screened is transported to the interior of the silo body through the feed hopper, and then the eccentric wheel is driven to rotate by the output shaft of the servo motor to push the screen plate to drive the rotating shaft to rotate along the silo body, and the screen plate drives the first screen and the second screen to shake at the same time, so that the nano calcium carbonate production material with smaller particle size passes through the sieve holes of the first screen and falls into the lower left end of the interior of the silo body, passes through the first triangular stopper, and increases the residence time of the nano calcium carbonate production material that needs to be screened on the first screen. At this time, the larger particles of nano calcium carbonate production material that have not passed the screening pass through the first triangular stopper and enter the interior of the second screen for screening, and the nano calcium carbonate production material with larger particle size passes through the sieve holes of the second screen and falls into the lower right end of the interior of the silo body, and passes through the two The inclined block discharges the nano-calcium carbonate production materials of different particle sizes after screening from the two discharge ports to the outside. The screen plate vibrates while driving the diversion block at the upper end to move synchronously. At this time, the folding and expansion of the folding cloth reduces the mixing of the nano-calcium carbonate production materials after screening inside the silo body, and the screening work is completed. The nano-calcium carbonate production materials that fail to pass through the first and second sieves accumulate on the left end of the second triangular block. After accumulating to a certain extent, they pass through the second triangular block as the screen plate vibrates and are discharged from the waste port to the outside for collection, which makes it convenient to re-process the nano-calcium carbonate production materials that fail to pass through the screening and then screen them, thereby improving the screening effect, reducing material waste, reducing production costs, and facilitating the use of automatic screening in silos for nano-calcium carbonate production.

[0022] 2. In the utility model, the first screen and the second screen are cleaned regularly through the anti-clogging mechanism after screening, which makes cleaning more convenient, facilitates the normal use of the first screen and the second screen, reduces the situation where the first screen and the second screen are blocked and cause poor screening effect, ensures the continuity and efficiency of screening, and also reduces the resulting production costs and material waste.

[0023] 3. In the present invention, there is no material for the production of nano-calcium carbonate that needs to be screened on the top surfaces of the first and second screens. The blower sucks and compresses the external air and then delivers it to the inside of the telescopic hose through the output end. The high-pressure air is then delivered to the inside of one of the hollow back-blowing blocks through the delivery pipe. The other hollow back-blowing block also has high-pressure air through the connecting pipe. At this time, the high-pressure air is respectively ejected from the two ejection slots to the upper end. The ejected high-pressure air flushes the sieve holes of the first and second screens from bottom to top, blowing out the clogged material for the production of nano-calcium carbonate from the sieve holes. At the same time, the servo motor drives the eccentric wheel to rotate, driving the sieve plate to shake, The blown nano-calcium carbonate production material is discharged to the outside from the waste port, and the push block is pushed to move by the piston rod of the electric push rod, so that the push block drives the two hollow back-blowing blocks to slide along the slide rod. At this time, the connecting pipe slides along the diverter block, so that the two hollow back-blowing blocks slide along the bottom surfaces of the first screen and the second screen respectively, and the sieve holes of the first screen and the second screen are cleaned. When the hollow back-blowing block moves, the telescopic hose is stretched, which facilitates the continuous delivery of high-pressure air, improves the cleaning effect of the sieve holes of the first screen and the second screen, reduces the occurrence of omissions in sieve hole cleaning, ensures the continuous and efficient operation of the screen, and provides a strong guarantee for the continuous and stable production of nano-calcium carbonate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a cross-sectional view of the silo body structure of the utility model;

[0026] Figure 3 This is a bottom view of the screen plate structure of the present utility model;

[0027] Figure 4 This is a cross-sectional view of the screen plate structure of the present utility model;

[0028] Figure 5 This is a cross-sectional view of the connecting pipe structure of the present utility model.

[0029] In the figure: 1. silo body; 2. feed hopper; 3. sieve plate; 4. rotating shaft; 5. first screen; 6. second screen; 7. first triangular block; 8. second triangular block; 9. servo motor; 10. eccentric wheel; 11. discharge port; 12. anti-blocking mechanism; 1201. hollow back-blowing block; 1202. slide rod; 1203. fixed block; 1204. push block; 1205. electric push rod; 1206. connecting pipe; 1207. injection slot; 1208. conveying pipe; 1209. telescopic hose; 1210. blower; 13. leak-proof plate; 14. waste port; 15. diverter block; 1501. folding cloth; 16. tilting block. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides an automatic screening device for a silo for the production of nano calcium carbonate, including a silo body 1, the top surface of the silo body 1 is connected to a feed hopper 2, a sieve plate 3 is provided at the upper end of the interior of the silo body 1, and the sieve plate 3 is symmetrically structured with two rotating shafts 4, which are rotatably connected to the silo body 1. A first sieve 5 is installed at one end of the top surface of the sieve plate 3, and a second sieve 6 is installed at the other end of the top surface of the sieve plate 3. A first triangular stopper 7 is fixed in the middle of the top surface of the sieve plate 3, and a second triangular stopper 8 is fixed on the right side of the top surface of the sieve plate 3. A servo motor 9 is installed on the left wall of the silo body 1 through a mounting seat, and the output shaft of the servo motor 9 extends through the outer wall of the silo body 1 to the inner wall, and an eccentric wheel 10 is sleeved on the output shaft of the servo motor 9. The outer wall of the eccentric wheel 10 is suitable for friction with the bottom surface of the sieve plate 3, and two discharge ports 11 are provided at the lower end of the silo body 1 in a symmetrical structure. The bottom surface of the sieve plate 3 is provided with an anti-blocking mechanism 12. The silo body 1 is a silo for the production of nano calcium carbonate.

[0033] The aperture of the first sieve 5 is smaller than that of the second sieve 6. A leak-proof plate 13 is fixedly provided on the left inner wall of the silo body 1. The bottom surface of the leak-proof plate 13 is adapted to contact the bottom surface of the left end of the sieve plate 3. A waste material opening 14 is provided in the middle of the right wall of the silo body 1. The nano-calcium carbonate production material with a smaller particle size passes through the sieve holes of the first sieve 5 and falls into the lower left end of the interior of the silo body 1. The nano-calcium carbonate production material with a larger particle size passes through the sieve holes of the second sieve 6 and falls into the lower right end of the interior of the silo body 1.

[0034] A diverter block 15 is fixedly provided on the bottom middle surface of the sieve plate 3, and a folded cloth 1501 is fixedly provided on the middle part of the diverter block 15. The bottom surface of the diverter block 15 is fixedly provided on the bottom inner surface of the silo body 1. When the sieve plate 3 shakes, the diverter block 15 at the upper end is driven to move synchronously. At this time, the folding and expansion of the folded cloth 1501 reduces the mixing of the materials for the production of nano-calcium carbonate after screening inside the silo body 1.

[0035] The bottom surface of the silo body 1 is symmetrically structured and is fixed with two tilting blocks 16, which are both connected and fixed to the outer wall of the lower end of the diversion block 15; the nano calcium carbonate production materials with different particle sizes after screening are discharged to the outside from the two discharge ports 11 through the two tilting blocks 16.

[0036] During screening, the nano-calcium carbonate production material to be screened is first transported to the inside of the silo body 1 through the feed hopper 2, and then the eccentric wheel 10 is driven to rotate by the output shaft of the servo motor 9, pushing the screen plate 3 to drive the rotating shaft 4 to rotate along the silo body 1, and the screen plate 3 drives the first screen 5 and the second screen 6 to shake at the same time, so that the nano-calcium carbonate production material with smaller particle size passes through the sieve holes of the first screen 5 and falls into the lower left end of the silo body 1, and passes through the first triangular block 7, thereby increasing the residence time of the nano-calcium carbonate production material to be screened at the first screen 5, and the larger particles that have not been screened are removed at this time. The granular nano-calcium carbonate production material passes through the first triangular stopper 7 and enters the second screen 6 for screening. The nano-calcium carbonate production material with a larger particle size passes through the sieve holes of the second screen 6 and falls into the lower right end of the silo body 1. The nano-calcium carbonate production material with different particle sizes after screening is discharged from the two discharge ports 11 to the outside through the two inclined blocks 16. The sieve plate 3 shakes while driving the diverter block 15 at the upper end to move synchronously. At this time, the folding and stretching of the folding cloth 1501 reduces the mixing of the nano-calcium carbonate production material after screening inside the silo body 1, and completes the screening work.

[0037] The nano-calcium carbonate production materials that fail to pass through the first sieve 5 and the second sieve 6 are accumulated at the left end of the second triangular stopper 8. After accumulating to a certain extent, the sieve plate 3 shakes and passes through the second triangular stopper 8 and is discharged from the waste port 14 to the outside for collection. This facilitates the reprocessing of the nano-calcium carbonate production materials that fail to pass through the screening and then screens them, thereby improving the screening effect, reducing material waste, lowering production costs, and facilitating the use of automatic screening in the nano-calcium carbonate production silo.

[0038] After screening, the first screen 5 and the second screen 6 are cleaned regularly through the anti-clogging mechanism 12, which makes cleaning more convenient, facilitates the normal use of the first screen 5 and the second screen 6, reduces the situation where the first screen 5 and the second screen 6 have poor screening effects due to blockage, ensures the continuity and efficiency of screening, and reduces the resulting production costs and material waste.

[0039] Example 2

[0040] like Figure 1 , Figure 4 and Figure 5As shown, on the basis of embodiment 1, the anti-blocking mechanism 12 includes a hollow back-blowing block 1201, the top surface of the hollow back-blowing block 1201 is slidably connected to the bottom surface of the sieve plate 3, the lower side of the sieve plate 3 is symmetrically provided with two sliding rods 1202, the sliding rods 1202 are symmetrically provided with two fixed blocks 1203, the top surface of the fixed block 1203 is connected and fixed to the bottom surface of the sieve plate 3, the front and rear ends of the hollow back-blowing block 1201 are slidably connected to the sliding rod 1202, the hollow back-blowing block 1201 is symmetrically provided with two, and the bottom surface of the front end of one of the hollow back-blowing blocks 1201 is fixed with a push block 12 04. An electric push rod 1205 is installed at the front end of the bottom of the sieve plate 3 through a mounting seat. The piston rod of the electric push rod 1205 passes through the diverter block 15 and is connected and fixed with the push block 1204. The piston rod of the electric push rod 1205 is slidably connected with the diverter block 15; the piston rod of the electric push rod 1205 pushes the push block 1204 to move, so that the push block 1204 drives the two hollow back-blowing blocks 1201 to slide along the slide rod 1202, so that the two hollow back-blowing blocks 1201 slide along the bottom surfaces of the first screen 5 and the second screen 6 respectively, to clean the sieve holes of the first screen 5 and the second screen 6.

[0041] There is a connecting pipe 1206 between the two hollow back-blowing blocks 1201, which is slidably connected to the upper end of the diverter block 15. The top surface of the hollow back-blowing block 1201 is provided with a spray slot 1207. The bottom surface of the other hollow back-blowing block 1201 is connected with a delivery pipe 1208, and the delivery pipe 1208 is connected with a telescopic hose 1209. A blower 1210 is installed on the rear wall of the silo body 1 through a mounting seat. The output end of the blower 1210 passes through the outer wall of the silo body 1 and extends to the bottom of the silo body 1. Extending to the interior, the output end of the blower 1210 is connected to the telescopic hose 1209; the blower 1210 sucks and compresses the external air and then transmits it to the inside of the telescopic hose 1209 through the output end, and then transmits the high-pressure air to the inside of the hollow back-blowing block 1201 through the delivery pipe 1208 and the connecting pipe 1206. At this time, the high-pressure air is respectively ejected from the two injection slots 1207 to the upper end, and the ejected high-pressure air flushes the sieve holes of the first screen 5 and the second screen 6.

[0042] When the anti-blocking mechanism 12 is used, the sieve plate 3 stops rotating and the feeding of the silo body 1 is stopped. At this time, there is no nano-calcium carbonate production material that needs to be screened on the top surfaces of the first sieve 5 and the second sieve 6. The blower 1210 sucks and compresses the external air and then delivers it to the inside of the telescopic hose 1209 through the output end. The high-pressure air is then delivered to the inside of one of the hollow back-blowing blocks 1201 through the delivery pipe 1208, and the other hollow back-blowing block 1201 is also filled with high-pressure air through the connecting pipe 1206. At this time, the high-pressure air is respectively ejected from the two injection slots 1207 to the upper end. The ejected high-pressure air flushes the sieve holes of the first sieve 5 and the second sieve 6 from bottom to top, and the clogged nano-calcium carbonate production material is blown out from the sieve holes. At the same time, the eccentric wheel 10 is driven to rotate by the servo motor 9, which drives the sieve plate 3 to shake, and the blown nano-calcium carbonate production material is discharged to the outside from the waste port 14;

[0043] While the blower 1210 is working, the piston rod of the electric push rod 1205 pushes the push block 1204 to move, so that the push block 1204 drives the two hollow back-blowing blocks 1201 to slide along the slide rod 1202. At this time, the connecting pipe 1206 slides along the diverter block 15, so that the two hollow back-blowing blocks 1201 slide along the bottom surfaces of the first screen 5 and the second screen 6 respectively, and the sieve holes of the first screen 5 and the second screen 6 are cleaned. When the hollow back-blowing block 1201 moves, the telescopic hose 1209 is stretched, which facilitates the continuous delivery of high-pressure air, improves the cleaning effect of the sieve holes of the first screen 5 and the second screen 6, reduces the occurrence of missed sieve hole cleaning, ensures the continuous and efficient operation of the screen, and provides a strong guarantee for the continuous and stable production of nano calcium carbonate.

[0044] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic screening device for a silo for producing nano calcium carbonate, comprising a silo body (1), Features: The top surface of the silo body (1) is connected to a feed hopper (2), a sieve plate (3) is provided at the upper end of the interior of the silo body (1), two rotating shafts (4) are fixedly provided on the sieve plate (3) in a symmetrical structure, and the rotating shafts (4) are both rotatably connected to the silo body (1), a first sieve (5) is installed at one end of the top surface of the sieve plate (3), and a second sieve (6) is installed at the other end of the top surface of the sieve plate (3), a first triangular stopper (7) is fixedly provided in the middle of the top surface of the sieve plate (3), and a first triangular stopper (7) is fixedly provided on the right side of the top surface of the sieve plate (3). A second triangular stopper (8) is provided. A servo motor (9) is installed on the left wall of the silo body (1) through a mounting seat. The output shaft of the servo motor (9) penetrates the outer wall of the silo body (1) and extends to the inner wall. An eccentric wheel (10) is sleeved on the output shaft of the servo motor (9). The outer wall of the eccentric wheel (10) and the bottom surface of the sieve plate (3) are suitable for friction. The lower end of the silo body (1) is symmetrically structured and has two discharge ports (11). The bottom surface of the sieve plate (3) is provided with an anti-blocking mechanism (12).

2. The nano calcium carbonate production silo automatic screening device as claimed in claim 1, Features: The aperture of the first sieve (5) is smaller than the aperture of the second sieve (6); a leak-proof plate (13) is fixedly provided on the left inner wall of the silo body (1); the bottom surface of the leak-proof plate (13) is adapted to contact the bottom surface of the left end of the sieve plate (3); and a waste material opening (14) is provided in the middle of the right wall of the silo body (1).

3. The nano calcium carbonate production silo automatic screening device as claimed in claim 1, Features: A diverter block (15) is fixedly arranged on the bottom middle surface of the sieve plate (3), a folded cloth (1501) is fixedly arranged on the middle of the diverter block (15), and the bottom surface of the diverter block (15) is fixedly arranged on the inner bottom surface of the silo body (1).

4. The nano calcium carbonate production silo automatic screening device as claimed in claim 3, Features: The inner bottom surface of the silo body (1) is symmetrically structured and fixed with two tilting blocks (16), and the tilting blocks (16) are both connected and fixed to the outer wall of the lower end of the diverter block (15).

5. The nano calcium carbonate production silo automatic screening device as claimed in claim 3, Features: The anti-blocking mechanism (12) comprises a hollow back-blowing block (1201), the top surface of the hollow back-blowing block (1201) is slidably connected to the bottom surface of the sieve plate (3), the lower side of the sieve plate (3) is symmetrically structured with two sliding rods (1202), the sliding rods (1202) are symmetrically structured with two fixed blocks (1203), the top surface of the fixed block (1203) is connected and fixed to the bottom surface of the sieve plate (3), the front and rear ends of the hollow back-blowing block (1201) are slidably connected to the sliding rods (1202), and the hollow back-blowing block (1201) is symmetrically structured with two.

6. The nano calcium carbonate production silo automatic screening device as claimed in claim 5, Features: A push block (1204) is fixedly provided on the bottom surface of the front end of one of the hollow back-blowing blocks (1201), and an electric push rod (1205) is installed on the front end of the bottom of the sieve plate (3) through a mounting seat, and the piston rod of the electric push rod (1205) passes through the diverter block (15) and is connected and fixed to the push block (1204), and the piston rod of the electric push rod (1205) is slidably connected to the diverter block (15).

7. The automatic screening device for nano-calcium carbonate production according to claim 6, Features: A connecting pipe (1206) is connected between the two hollow back-blowing blocks (1201), and the connecting pipe (1206) is slidably connected to the upper end of the diverter block (15). A spraying groove (1207) is provided on the top surface of the hollow back-blowing block (1201).

8. The automatic screening device for nano-calcium carbonate production according to claim 7, Features: The bottom surface of the other hollow backflush block (1201) is connected to a delivery pipe (1208), and the delivery pipe (1208) is connected to a telescopic hose (1209).

9. The automatic screening device for nano-calcium carbonate production silo as claimed in claim 8, Features: A blower (1210) is installed on the rear wall of the silo body (1) via a mounting seat, and an output end of the blower (1210) passes through the outer wall of the silo body (1) and extends to the interior, and the output end of the blower (1210) is connected to a telescopic hose (1209).

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