A grinding device for preparing nano calcium carbonate powder

Abstract

The present invention discloses a grinding device for preparing nano calcium carbonate powder, which relates to the technical field of preparing nano calcium carbonate powder, and comprises a crushing chamber, wherein the outer surface of the crushing chamber is provided with a fixed outer frame, and the upper outer surface of the fixed outer frame is provided with a No. 1 feed port, and two groups of crushing rollers are provided inside the crushing chamber, and the outer surfaces of the two groups of crushing rollers are provided with a No. 1 rotating shaft, and the outer surface of the crushing chamber is provided with two groups of connecting shafts, and the two groups of the No. 1 rotating shafts are respectively connected to the two groups of connecting shafts, and the outer surfaces of the two groups of the connecting shafts are provided with a No. 1 motor, and the outer surface of the lower end of the fixed outer frame is provided with a feeding bin. The grinding device for preparing nano calcium carbonate powder of the present invention is used in combination with the crushing chamber and the grinding bin, so that the device has a sufficient processing function on the calcium carbonate raw material, and the crushing chamber allows the raw material with a larger diameter to be crushed and processed, and is transmitted to the primary grinding bin for grinding along the feeding pipe, which facilitates the grinding process and improves the output efficiency and quality of the finished product.

Description

Technical Field

[0001] The invention relates to the technical field of nano calcium carbonate powder preparation, in particular to a grinding device for preparing nano calcium carbonate powder. Background Art

[0002] Calcium carbonate is an inorganic compound, commonly known as graystone, limestone, stone powder, etc. Calcium carbonate is alkaline, basically insoluble in water, and soluble in hydrochloric acid. Nano calcium carbonate, also known as ultrafine calcium carbonate, refers to calcium carbonate particles with an average particle diameter of less than 100 nanometers. It has a higher specific surface area and active surface than traditional calcium carbonate. The most mature industry for its application is the plastics industry, mainly used in high-end plastic products. It can improve the rheology of plastic masterbatch and improve its formability. When used as a plastic filler, it has the effect of toughening and strengthening.

[0003] The production methods of nano calcium carbonate mainly include mechanical grinding, in which calcium carbonate is dispersed, ground, screened and other steps are performed on calcium carbonate by mechanical equipment to obtain nano calcium carbonate particles. A pulverizer is usually required for mechanical grinding. The existing grinding pulverizers have poor pulverizing effect. During the grinding process, the force at the edge and the center of the calcium carbonate raw material may be inconsistent, making it difficult to obtain high-quality nano calcium carbonate. In addition, the energy consumption is large, and the efficacy of the equipment cannot be fully utilized, resulting in a waste of production capacity. In order to solve the shortcomings of the existing technology, we propose a grinding device for preparing nano calcium carbonate powder. Summary of the invention

[0004] The main purpose of the present invention is to provide a grinding device for preparing nano calcium carbonate powder, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A grinding device for preparing nano calcium carbonate powder, comprising a crushing chamber, wherein a fixed outer frame is arranged on the outer surface of the crushing chamber, a No. 1 feeding port is arranged on the outer surface of the upper end of the fixed outer frame, two groups of crushing rollers are arranged inside the crushing chamber, a No. 1 rotating shaft is arranged on the outer surface of the two groups of crushing rollers, two groups of connecting shafts are arranged on the outer surface of the crushing chamber, the two groups of No. 1 rotating shafts are respectively connected to the two groups of connecting shafts, and a No. 1 motor is arranged on the outer surface of the two groups of connecting shafts, a feeding bin is arranged on the outer surface of the lower end of the fixed outer frame, a No. 1 bracket is arranged on the outer surface of the lower end of the feeding bin, a feeding pipe is arranged on the outer surface of the feeding bin, a primary grinding bin is arranged at the end of the feeding pipe, a connecting seat is arranged on the outer surface of the lower end of the primary grinding bin, and a bin cover is arranged on the outer surface of the upper end of the primary grinding bin. A No. 2 motor is arranged on the outer surface of the upper end of the bin cover, a turbine rotor is arranged on the outer surface of the lower end of the No. 2 motor, a grinding bin liner is arranged inside the primary grinding bin, a downwardly inclined material port is arranged on the upper end of the grinding bin liner, a grinding wall is arranged on the inner wall of the grinding bin liner, a grinding pile is arranged inside the grinding bin liner, a top mounting shaft is arranged on the outer surface of the upper end of the grinding pile, the top mounting shaft is connected to the turbine rotor, a plurality of groups of grinding protrusions are arranged on the outer surface of the grinding pile, a bottom mounting shaft is arranged on the outer surface of the lower end of the grinding pile, the bottom mounting shaft is connected to a connecting seat, a supporting base is arranged on the outer surface of the lower end of the connecting seat, a fixing slot is arranged at the center of the supporting base, an annular material discharge trough is arranged inside the connecting seat, and the annular material discharge trough is located at the bottom of the grinding bin liner.

[0007] Preferably, a secondary grinding bin is provided on the outer surface of the lower end of the connecting seat, a filter material chassis is provided on the outer surface of the lower end of the secondary grinding bin, a support shaft is provided inside the secondary grinding bin, the support shaft is connected to the fixed slot, a main driving gear is provided on the outer surface of the lower end of the support shaft, a secondary driving gear is provided on the outer surface of the main driving gear, a rotating rod is provided on the outer surface of the lower end of the secondary driving gear, three groups of sweeping pieces are provided on the outer surface of the rotating rod, a driving shaft is provided on the outer surface of the lower end of the main driving gear, a No. 3 motor is provided on the outer surface of the lower end of the driving shaft, a motor fixing seat is provided on the outer surface of the lower end of the No. 3 motor, and the motor fixing seat It is connected and fixed to the filter chassis, the No. 3 motor is detachably connected to the filter chassis through a motor fixing seat, three groups of rotating connecting frames are arranged on the outer surface of the driving shaft, two groups of fixed brackets are arranged on the outer wall of the rotating rod, the two groups of fixed brackets are respectively connected to the two groups of rotating connecting frames, the ends of the three groups of rotating connecting frames are all provided with fixed notches, the outer surfaces of the lower ends of the three groups of fixed notches are all provided with connecting clamping rods, the outer surfaces of the lower ends of the three groups of connecting clamping rods are all provided with grinding discs, the outer surfaces of the lower ends of the three groups of grinding discs are all provided with bottom surfaces, the outer surface of the lower end of the secondary grinding bin is provided with a discharge valve, and the outer surface of the discharge valve is provided with a No. 1 conveying pipe.

[0008] Preferably, a raw material inlet is provided at the end of the No. 1 conveying pipe, an air flow classifier is provided at the end of the raw material inlet, a coarse material discharge port is provided on the outer surface of the lower end of the air flow classifier, a vortex air inlet bin is provided at the bottom of the air flow classifier, an air intake fan is provided on the outer surface of the vortex air inlet bin, a No. 2 conveying pipe is provided on the outer surface of one side of the air flow classifier, a No. 5 motor is provided on the outer surface of the upper end of the air flow classifier, a No. 2 rotating shaft is provided on the outer surface of the lower end of the No. 5 motor, a grading wheel is provided on the outer surface of the lower end of the No. 2 rotating shaft, a powder dispersion disk is provided on the outer surface of the lower end of the grading wheel, a No. 2 bracket is provided on the outer surface of the air flow classifier, a dust collector is provided at the end of the No. 2 conveying pipe, a dust removal fan is provided on the outer surface of the lower end of the dust collector, and a No. 3 conveying pipe is provided on the outer surface of the dust collector.

[0009] Preferably, a No. 4 motor is provided at the top of the conveying pipe, and the No. 4 motor is located inside the feeding bin. A No. 2 feed port is provided on the outer surface of the upper end of the conveying pipe, and the No. 2 feed port is connected to the crushing chamber. A spiral conveying rod is provided inside the conveying pipe, and the spiral conveying rod is connected to the No. 4 motor.

[0010] Preferably, a connecting shaft is provided between the No. 1 motor and the crushing chamber, the No. 1 motor and the crushing chamber are detachably connected via the connecting shaft, a No. 1 rotating shaft is provided between the crushing roller and the connecting shaft, and the crushing roller and the connecting shaft are rotatably connected via the No. 1 rotating shaft.

[0011] Preferably, a bin cover is provided between the No. 2 motor and the primary grinding bin, and the No. 2 motor and the primary grinding bin are detachably connected via the bin cover; a bottom mounting shaft is provided between the grinding pile and the connecting seat, and the grinding pile and the connecting seat are rotatably connected via the bottom mounting shaft; a top mounting shaft is provided between the grinding pile and the No. 2 motor, and the grinding pile and the No. 2 motor are detachably connected via the top mounting shaft.

[0012] Preferably, a connecting seat is provided between the secondary grinding chamber and the primary grinding chamber, and the secondary grinding chamber and the primary grinding chamber are detachably connected via the connecting seat, a fixed slot is provided between the support shaft and the connecting seat, and the support shaft and the connecting seat are detachably connected via the fixed slot, a driving shaft is provided between the main driving gear and the rotating connecting frame, and the main driving gear and the rotating connecting frame are detachably connected via the driving shaft, a fixed notch is provided between the connecting rod and the rotating connecting frame, and the connecting rod and the rotating connecting frame are detachably connected via the fixed notch.

[0013] Preferably, a No. 1 delivery pipe is provided between the discharge valve and the raw material inlet, and the discharge valve and the raw material inlet are detachably connected through the No. 1 delivery pipe, an air inlet connecting pipe port is provided between the air intake fan and the vortex air intake bin, and the air intake fan and the vortex air intake bin are detachably connected through the air inlet connecting pipe port, and a No. 2 delivery pipe is provided between the air flow classifier and the dust collector, and the air flow classifier and the dust collector are detachably connected through the No. 2 delivery pipe.

[0014] Preferably, a No. 2 feed port is provided between the feed pipe and the crushing chamber, and the feed pipe and the crushing chamber are detachably connected through the No. 2 feed port; a feed pipe is provided between the crushing chamber and the primary grinding bin, and the crushing chamber and the primary grinding bin are detachably connected through the feed pipe.

[0015] Beneficial Effects

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the crushing chamber and the grinding chamber are used in combination, so that the device has a sufficient processing effect on the calcium carbonate raw material. The crushing chamber allows the raw material with a larger diameter to be crushed and processed, and is transmitted to the primary grinding chamber for grinding along the feeding pipe, so as to facilitate the grinding process. The grinding chamber is divided into two groups of grinding structures, which can perform multiple fine grinding on the calcium carbonate raw material, thereby improving the output efficiency and quality of the finished product.

[0018] 2. In the present invention, the airflow classifier is provided to sort and purify the finished products produced after the grinding of the device. The coarse and fine materials are separated under the centrifugal force generated by the high-speed rotating classification turbine in the airflow classifier. The fine particles that meet the particle size requirements are transmitted to the dust collector for collection through the No. 2 conveying pipe, while the coarse particles are discharged from the coarse material discharge port at the bottom of the raw material inlet and recovered by the staff to be put back into the grinding assembly for processing.

[0019] 3. In the present invention, two groups of grinding structures are used to grind the calcium carbonate raw material for multiple times. The grinding pile is driven by the No. 2 motor to rotate, so that the grinding protrusions on the outer wall of the grinding pile rub against the grinding wall to perform the first grinding. Since the grinding pile is large in size, the driving efficiency of the motor is improved through the turbine rotor at the bottom of the motor. The secondary grinding structure at the bottom is driven by the No. 3 motor to rotate the rotating connecting frame, so that the grinding disk connected to the connecting rod can thoroughly grind the powder particles on the top of the filter base plate. The grinding efficiency is high, and the power of the motor is maximized, thereby improving the production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the second motor of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the airflow classifier of the present invention;

[0023] Figure 4 It is a schematic diagram of the inner structure of the grinding chamber of the present invention;

[0024] Figure 5 It is a schematic diagram of the grinding pile structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the primary grinding chamber structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the connecting seat of the present invention;

[0027] Figure 8 It is a schematic diagram of the secondary grinding chamber structure of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the sweeping sheet of the present invention;

[0029] Fig.10 It is a schematic diagram of the structure of the crushing roller of the present invention;

[0030] Fig.11 It is a schematic diagram of the structure of the material delivery pipe of the present invention;

[0031] Fig.12 It is a structural schematic diagram of the rotary connecting frame of the present invention.

[0032] In the figure: 1. Crushing chamber; 2. Fixed outer frame; 3. No. 1 feed port; 4. No. 1 motor; 5. Connecting shaft; 6. Feed bin; 7. No. 1 bracket; 8. Feed pipe; 9. No. 2 motor; 10. Bin cover; 11. Primary grinding bin; 12. Secondary grinding bin; 13. Discharge valve; 14. No. 1 delivery pipe; 15. Grinding bin liner; 16. Oblique downward feed port; 17. Grinding wall; 18. Connecting seat; 19. Top mounting shaft; 20. Bottom mounting shaft; 21. Grinding pile; 22. Grinding bump; 23. Support base; 24. Annular feed trough; 25. Fixed slot; 26. Support shaft; 27. Main drive gear; 28. Auxiliary drive gear; 29. ​​Rotating rod; 30. Drive shaft; 31. Fixed slot ; 32. Rotating connecting frame; 33. Connecting rod; 34. No. 3 motor; 35. Filter base; 36. Grinding disc; 37. Bottom surface; 38. Dust collector; 39. No. 2 conveying pipe; 40. Sweeping sheet; 41. Crushing roller; 42. No. 1 rotating shaft; 43. Screw conveying rod; 44. No. 4 motor; 45. No. 2 feeding port; 46. Turbine rotor; 47. Air flow classifier; 48. Coarse material discharge port; 49. No. 2 bracket; 50. Dust removal fan; 51. No. 3 conveying pipe; 52. Raw material inlet; 53. No. 5 motor; 54. Intake fan; 55. Vortex inlet bin; 56. Classifying wheel; 57. Powder dispersion disk; 58. No. 2 rotating shaft; 59. Motor fixing seat; 60. Fixed bracket. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figure 1-Figure 6 As shown, a grinding device for preparing nano calcium carbonate powder, Figure 6The internal structure of the primary grinding bin of the device is as follows: before grinding the calcium carbonate raw material, the large raw material ore blocks need to be crushed first, and the raw material is put into the crushing chamber 1 through the No. 1 feed port 3, and the two groups of No. 1 motors 4 are used to drive the two groups of crushing rollers 41 inside to rotate in opposite directions. The mutual friction effect is achieved through the opposite rotation between the two groups of crushing rollers 41, so as to quickly crush the calcium carbonate raw material blocks, and the crushed slag falls into the feed pipe 8 inside the feed bin 6 through the No. 2 feed port 45 to be transported to the primary grinding bin 11. When the broken pieces are transported to the primary grinding bin 11, the grinding process can be started, and the crushed slag slides obliquely downward along the oblique downward feed port 16 on the inner wall of the primary grinding bin 11 into the grinding bin inner tank 15. At the same time, due to the inner tank of the grinding bin A grinding pile 21 is installed inside 15. The broken pieces are guided to the edge of the grinding bin liner 15 under the influence of the grinding pile 21, so that the broken pieces are evenly distributed on the outer wall of the grinding bin liner 15. The grinding pile 21 is driven to rotate by the No. 2 motor 9. Since the grinding pile 21 is large in size, the bottom of the No. 2 motor 9 is connected to the top mounting shaft 19 of the grinding pile 21 through the turbine rotor 46. The driving efficiency of the motor is improved by using the turbine rotor 46. The multiple groups of grinding protrusions 22 on the outer wall of the grinding pile 21 rub against the grinding wall 17 on the inner wall of the grinding bin liner 15, so as to grind the calcium carbonate broken pieces on the periphery of the grinding pile 21. The structure of the grinding pile 21 and the grinding bin liner 15 cooperating in grinding makes the grinding method simple and reliable, with low energy consumption and high efficiency, and is easy for mass production of products.

[0035] like Figure 7 and Fig. 9As shown, a grinding device for preparing nano calcium carbonate powder, the secondary grinding bin 12 is installed to the bottom of the primary grinding bin 11 through a connecting seat 18. When the calcium carbonate slag in the primary grinding bin 11 is ground, it can fall into the secondary grinding bin 12 through the connecting seat 18 for secondary grinding. An annular feeding trough 24 is arranged inside the connecting seat 18. Since the calcium carbonate in the primary grinding bin 11 is ground on the outer wall of the grinding pile 21, the annular feeding trough 24 can be used for accurate feeding. The calcium carbonate powder can be evenly sprinkled on the filter base 35 at the bottom of the secondary grinding bin 12 through the annular feeding trough 24. The support shaft 26 inside the secondary grinding chamber 12 is connected and fixed to the connecting seat 18 through the fixed card slot 25, which starts the supporting function of the grinding assembly. During processing, the No. 3 motor 34 at the bottom of the support shaft 26 is started, and the No. 3 motor 34 can drive the three sets of rotating connecting frames 32 at the top to rotate through the driving shaft 30. The ends of the three sets of rotating connecting frames 32 are all equipped with fixed notches 31. The fixed notches 31 can be used to fix the three sets of connecting rods 33 with grinding discs 36, so that the rotating connecting frame 32 can drive the connecting rods 33 to perform circular motion, thereby driving the grinding disc 36 to the calcium carbonate powder on the upper end of the filter base 35. Secondary grinding is performed, and the bottom surface 37 with strong friction at the bottom of the grinding disc 36 rubs against the powder particles on the filter base 35, so that the powder particles can be ground into finer powder, and finally discharged to the discharge valve 13 through the filter holes on the outer surface of the filter base 35. Due to the feeding effect of the annular feeding trough 24, most of the calcium carbonate powder particles are distributed in a ring shape on the edge of the filter base 35. The three groups of grinding discs 36 perform uniform circular motion at the same time, so that the calcium carbonate powder on the edge of the filter base 35 is subjected to uniform force, thereby improving the grinding accuracy and product quality. At the same time, when the third motor 34 drives the rotating connecting frame 32 to rotate, its upper end The main driving gear 27 is also driven to rotate synchronously, and the main driving gear 27 can drive the auxiliary driving gear 28 on the outer wall to perform circular motion, so that the auxiliary driving gear 28 moves in coordination with the rotating rod 29 at the lower end, so that during the grinding process of the device, the sweeping piece 40 installed on the outer wall of the rotating rod 29 is used to scrape the powder particles inside the secondary grinding bin 12, so that the residual powder particles fall to the surface of the filter base plate 35, so as to improve the grinding effect. After the two grindings, the grinding effect of the calcium carbonate powder is thorough, the finished product output rate is high, the grinding efficiency is high, and the power of the motor is maximized, thereby improving the production efficiency of the product.

[0036] like Figure 1-Figure 3As shown, a grinding device for preparing nano calcium carbonate powder can sort and purify the finished products produced after grinding by the device through the airflow classifier 47. The ground pre-finished products are transported to the inside of the airflow classifier 47 through the discharge valve 13. The materials are moved to the top classification area along the rising airflow from the raw material inlet 52 at the lower end of the airflow classifier 47 under the suction force of the air intake fan 54. Under the centrifugal force generated by the high-speed rotating classification turbine in the vortex air intake bin 55, the lighter fine materials are swept along the airflow into the inside of the No. 2 conveying pipe 39, while the heavier coarse materials are precipitated downward, so that the coarse and fine materials are separated. The fine particles that meet the particle size requirements are transported to the dust collector 38 for collection through the No. 2 conveying pipe 39 at the upper end. After the finished calcium carbonate powder is dedusted by the dust collector 38, the finished product can be transported to the production line through the No. 3 conveying pipe 51, and the coarse particles that do not meet the requirements are discharged from the coarse material discharge port 48 at the bottom of the raw material inlet 52, and are recovered by the staff to be put back into the grinding assembly for processing.

[0037] like Figure 1-Figure 12As shown, a grinding device for preparing nano calcium carbonate powder, the device uses a crushing and grinding component and a separation component to achieve the preparation of nano calcium carbonate powder. When in use, the raw material is put into the crushing chamber 1 through the No. 1 feed port 3, and two groups of No. 1 motors 4 are used to drive the two groups of crushing rollers 41 inside to rotate in opposite directions. The two groups of crushing rollers 41 rub against each other to quickly crush the calcium carbonate raw material blocks, and the crushed slag falls into the feed pipe 8 inside the feed bin 6 through the No. 2 feed port 45. The No. 4 motor 44 in the feed bin 6 drives the spiral conveying rod 43 inside the feed pipe 8 to rotate, so that the spiral conveying rod 43 pushes the calcium carbonate slag in the feed pipe 8 into the primary grinding bin 11 at the front end. When the crushed pieces are transported to the primary grinding bin 11 When the ore is ground inside, the crushed slag will slide down obliquely along the oblique downward feeding port 16 on the inner wall of the primary grinding bin 11 to the edge of the grinding bin liner 15, so that the crushed pieces are evenly distributed on the outer wall of the grinding bin liner 15, and the grinding pile 21 is driven to rotate by the No. 2 motor 9, so that the multiple groups of grinding protrusions 22 on the outer wall of the grinding pile 21 are rubbed against the grinding wall 17 on the inner wall of the grinding bin liner 15, thereby performing a primary grinding process on the calcium carbonate crushed slag on the periphery of the grinding pile 21. When the calcium carbonate crushed slag in the primary grinding bin 11 is ground, it can fall into the secondary grinding bin 12 through the connecting seat 18 for secondary grinding. Since the calcium carbonate in the primary grinding bin 11 is ground on the outer wall of the grinding pile 21, the annular feeding trough 24 can be used for accurate feeding, and the calcium carbonate powder is evenly distributed. The powder is evenly sprinkled on the filter base plate 35 at the bottom of the secondary grinding bin 12. During processing, the No. 3 motor 34 at the bottom of the support shaft 26 is started. The No. 3 motor 34 can drive the three groups of rotating connecting frames 32 at the top to rotate through the driving shaft 30, so that the rotating connecting frame 32 can drive the connecting clamping rod 33 to perform circular motion, thereby driving the grinding disc 36 to perform secondary grinding on the calcium carbonate powder on the upper end of the filter base plate 35. The bottom surface 37 with strong friction at the bottom of the grinding disc 36 rubs against the powder particles on the filter base plate 35, so that the powder particles can be ground into finer powder, and finally discharged to the discharge valve 13 through the filter holes on the outer surface of the filter base plate 35. At the same time, when the No. 3 motor 34 drives the rotating connecting frame 32 to rotate, the main driving gear 27 at its upper end is also The main driving gear 27 can drive the auxiliary driving gear 28 on the outer wall to perform circular motion, so that the auxiliary driving gear 28 can move in coordination with the rotating rod 29 at the lower end, so that during the grinding process of the device, the sweeping piece 40 installed on the outer wall of the rotating rod 29 is used to scrape the powder particles inside the secondary grinding bin 12, so that the residual powder particles fall to the surface of the filter base plate 35 and continue to be ground. The ground pre-finished product is transported to the inside of the airflow classifier 47 through the discharge valve 13. The material moves to the top classification area with the rising air flow from the raw material inlet 52 at the lower end of the airflow classifier 47 under the suction force of the air intake fan 54. The coarse and fine materials are separated under the centrifugal force generated by the high-speed rotating classification turbine in the vortex air intake bin 55.Fine particles that meet the particle size requirements are transported to the dust collector 38 through the No. 2 conveying pipe 39 at the upper end for collection. After the finished calcium carbonate powder is dusted by the dust collector 38, the finished product can be transported to the production line through the No. 3 conveying pipe 51, while coarse particles that do not meet the requirements are discharged from the coarse material discharge port 48 at the bottom of the raw material inlet 52. The finished product after crushing and grinding is output after classification and filtration. The use of multiple processing components makes the device compact and reasonable, highly functional and easy to use.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A grinding device for preparing nano calcium carbonate powder, comprising a crushing chamber (1), characterized in that: The outer surface of the crushing chamber (1) is provided with a fixed outer frame (2), and the outer surface of the upper end of the fixed outer frame (2) is provided with a No. 1 feed port (3). Two groups of crushing rollers (41) are provided inside the crushing chamber (1), and the outer surfaces of the two groups of crushing rollers (41) are provided with a No. 1 rotating shaft (42). The outer surface of the crushing chamber (1) is provided with two groups of connecting shafts (5), and the two groups of the No. 1 rotating shafts (42) are respectively connected to the two groups of connecting shafts (5), and the outer surfaces of the two groups of the connecting shafts (5) are provided with a No. 1 motor (4). The fixed outer frame (2) is provided with a feeding bin (6) on the outer surface of the lower end, a No. 1 bracket (7) is provided on the outer surface of the lower end of the feeding bin (6), a feeding pipe (8) is provided on the outer surface of the feeding bin (6), a primary grinding bin (11) is provided at the end of the feeding pipe (8), a connecting seat (18) is provided on the outer surface of the lower end of the primary grinding bin (11), a bin cover (10) is provided on the outer surface of the upper end of the primary grinding bin (11), a No. 2 motor (9) is provided on the outer surface of the upper end of the bin cover (10), and the A turbine rotor (46) is disposed on the outer surface of the lower end of the second motor (9); a grinding chamber liner (15) is disposed inside the primary grinding chamber (11); a material port (16) inclined downward is disposed at the upper end of the grinding chamber liner (15); a grinding wall (17) is disposed on the inner wall of the grinding chamber liner (15); a grinding pile (21) is disposed inside the grinding chamber liner (15); a top mounting shaft (19) is disposed on the outer surface of the upper end of the grinding pile (21); the top mounting shaft (19) is connected to the turbine rotor (46); The outer surface of the grinding pile (21) is provided with a plurality of grinding protrusions (22); the outer surface of the lower end of the grinding pile (21) is provided with a bottom mounting shaft (20); the bottom mounting shaft (20) is connected to the connecting seat (18); the outer surface of the lower end of the connecting seat (18) is provided with a supporting base (23); a fixing groove (25) is provided at the center of the supporting base (23); an annular material discharge groove (24) is provided inside the connecting seat (18); the annular material discharge groove (24) is located at the bottom of the inner container (15) of the grinding bin; The outer surface of the lower end of the connecting seat (18) is provided with a secondary grinding chamber (12), the outer surface of the lower end of the secondary grinding chamber (12) is provided with a filter material bottom plate (35), the interior of the secondary grinding chamber (12) is provided with a support shaft (26), the support shaft (26) is connected to the fixed slot (25), the outer surface of the lower end of the support shaft (26) is provided with a main driving gear (27), the outer surface of the main driving gear (27) is provided with a secondary driving gear (28), the outer surface of the lower end of the secondary driving gear (28) is provided with a rotating rod (29), the outer surface of the rotating rod (29) is provided with three groups of sweeping pieces (40), the outer surface of the lower end of the main driving gear (27) is provided with a driving shaft (30), the outer surface of the lower end of the driving shaft (30) is provided with a third motor (34), the outer surface of the lower end of the third motor (34) is provided with a motor fixing seat (59), the motor fixing seat (59) The third motor (34) is detachably connected to the filter base (35) via a motor fixing seat (59); the outer surface of the drive shaft (30) is provided with three groups of rotating connecting frames (32); the outer wall of the rotating rod (29) is provided with two groups of fixing brackets (60); the two groups of fixing brackets (60) are respectively connected to the two groups of rotating connecting frames (32); the ends of the three groups of rotating connecting frames (32) are provided with fixing notches (31); the outer surfaces of the lower ends of the three groups of fixing notches (31) are provided with connecting clamping rods (33); the outer surfaces of the lower ends of the three groups of connecting clamping rods (33) are provided with grinding discs (36); the outer surfaces of the lower ends of the three groups of grinding discs (36) are provided with bottom surfaces (37); the outer surface of the lower end of the secondary grinding bin (12) is provided with a discharge valve (13); the outer surface of the discharge valve (13) is provided with a first conveying pipe (14).

2. A grinding device for preparing nano calcium carbonate powder according to claim 1, characterized in that: A raw material inlet (52) is provided at the end of the No. 1 conveying pipe (14), an airflow classifier (47) is provided at the end of the raw material inlet (52), a coarse material discharge port (48) is provided on the outer surface of the lower end of the airflow classifier (47), a vortex air inlet bin (55) is provided at the bottom of the airflow classifier (47), an air inlet fan (54) is provided on the outer surface of the vortex air inlet bin (55), a No. 2 conveying pipe (39) is provided on the outer surface of one side of the airflow classifier (47), and a No. 5 motor (6) is provided on the outer surface of the upper end of the airflow classifier (47). 53), a No. 2 rotating shaft (58) is arranged on the outer surface of the lower end of the No. 5 motor (53), a No. 2 rotating shaft (58) is arranged on the outer surface of the lower end of the No. 2 rotating shaft (58), a classifying wheel (56) is arranged on the outer surface of the lower end of the classifying wheel (56), a powder dispersion disk (57) is arranged on the outer surface of the lower end of the classifying wheel (56), a No. 2 bracket (49) is arranged on the outer surface of the airflow classifier (47), a dust collector (38) is arranged at the end of the No. 2 conveying pipe (39), a dust removal fan (50) is arranged on the outer surface of the lower end of the dust collector (38), and a No. 3 conveying pipe (51) is arranged on the outer surface of the dust collector (38).

3. A grinding device for preparing nano calcium carbonate powder according to claim 1, characterized in that: A No. 4 motor (44) is arranged at the top end of the conveying pipe (8), and the No. 4 motor (44) is located inside the feeding bin (6). A No. 2 feed port (45) is arranged on the outer surface of the upper end of the conveying pipe (8), and the No. 2 feed port (45) is connected to the crushing chamber (1). A spiral conveying rod (43) is arranged inside the conveying pipe (8), and the spiral conveying rod (43) is connected to the No. 4 motor (44).

4. A grinding device for preparing nano calcium carbonate powder according to claim 1, characterized in that: A connecting shaft (5) is provided between the No. 1 motor (4) and the crushing chamber (1), and the No. 1 motor (4) and the crushing chamber (1) are detachably connected via the connecting shaft (5). A No. 1 rotating shaft (42) is provided between the crushing roller (41) and the connecting shaft (5), and the crushing roller (41) and the connecting shaft (5) are rotatably connected via the No. 1 rotating shaft (42).

5. A grinding device for preparing nano calcium carbonate powder according to claim 1, characterized in that: A bin cover (10) is provided between the second motor (9) and the primary grinding bin (11), and the second motor (9) and the primary grinding bin (11) are detachably connected via the bin cover (10); a bottom mounting shaft (20) is provided between the grinding pile (21) and the connecting seat (18), and the grinding pile (21) and the connecting seat (18) are rotatably connected via the bottom mounting shaft (20); a top mounting shaft (19) is provided between the grinding pile (21) and the second motor (9), and the grinding pile (21) and the second motor (9) are detachably connected via the top mounting shaft (19).

6. A grinding device for preparing nano calcium carbonate powder according to claim 1, characterized in that: A connecting seat (18) is provided between the secondary grinding chamber (12) and the primary grinding chamber (11), and the secondary grinding chamber (12) and the primary grinding chamber (11) are detachably connected via the connecting seat (18); a fixing slot (25) is provided between the support shaft (26) and the connecting seat (18), and the support shaft (26) and the connecting seat (18) are detachably connected via the fixing slot (25); a driving shaft (30) is provided between the main driving gear (27) and the rotating connecting frame (32), and the main driving gear (27) and the rotating connecting frame (32) are detachably connected via the driving shaft (30); a fixing notch (31) is provided between the connecting rod (33) and the rotating connecting frame (32), and the connecting rod (33) and the rotating connecting frame (32) are detachably connected via the fixing notch (31).

7. A grinding device for preparing nano calcium carbonate powder according to claim 2, characterized in that: A first delivery pipe (14) is provided between the discharge valve (13) and the raw material inlet (52), and the discharge valve (13) and the raw material inlet (52) are detachably connected via the first delivery pipe (14); an air intake connection pipe opening is provided between the air intake fan (54) and the vortex air intake bin (55), and the air intake fan (54) and the vortex air intake bin (55) are detachably connected via the air intake connection pipe opening; a second delivery pipe (39) is provided between the airflow classifier (47) and the dust collector (38), and the airflow classifier (47) and the dust collector (38) are detachably connected via the second delivery pipe (39).

8. A grinding device for preparing nano calcium carbonate powder according to claim 3, characterized in that: A second feed port (45) is provided between the feed pipe (8) and the crushing chamber (1), and the feed pipe (8) and the crushing chamber (1) are detachably connected via the second feed port (45). A feed pipe (8) is provided between the crushing chamber (1) and the primary grinding bin (11), and the crushing chamber (1) and the primary grinding bin (11) are detachably connected via the feed pipe (8).

Images