Superfine cement grinding device

Abstract

The utility model belongs to the three-dimensional field of superfine cement grinding, and particularly relates to a superfine cement grinding device which comprises a base, a crushing bin is installed on a material guide pipe, a first motor is installed on the outer wall of the crushing bin through a machine base, a first rotating rod is installed on an output shaft of the first motor, and a second rotating rod is installed on the output shaft of the first rotating rod. A first rotating rod is rotatably mounted on the inner wall of the crushing bin, a second rotating rod is rotatably mounted on the inner wall of the crushing bin, and a plurality of groups of crushing cutters are mounted on the first rotating rod and the second rotating rod. A first rotating rod and a second rotating rod drive crushing cutters on the first rotating rod and the second rotating rod to crush cement with different particle sizes, so that large-particle cement is crushed into small-particle cement, a spiral blade pushes the cement into a rotating cylinder, feeding of the cement is achieved, then the cement is crushed in the rotating cylinder, and due to the fact that to-be-crushed cement particles are small, the cement particles are uniform in size. And the grinding time is shortened, and the grinding efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the field of ultrafine cement grinding, in particular to an ultrafine cement grinding device. Background Art

[0002] Cement grinding is the last process in cement manufacturing and also the process that consumes the most electricity. Its main function is to grind cement clinker to a suitable particle size, form a certain particle gradation, increase its hydration area, accelerate the hydration rate, and meet the requirements of cement slurry coagulation and hardening. In the process of cement grinding, a grinding device is required.

[0003] A Chinese patent with the publication number CN116116518A discloses an ultrafine grinding device and method for cement production, including a base and a ball mill barrel, the axis of the ball mill barrel is connected with a central shaft rod, the outer surfaces of both ends of the central shaft rod are provided with a closed structure, the outer surface of the central shaft rod is provided with a blowing structure, and the outer surface of the inner wall of the ball mill barrel is provided with a stirring structure; the blowing structure includes a movable shell movably sleeved on the outer surface of the central shaft rod, and the outer surface of the central shaft rod is fixedly connected with a fan blade at the inner side of the movable shell. Through the above technical scheme, the existing ultrafine grinding device for cement production is solved. The ball mill equipment needs to have a large initial speed to throw the ball up, which will increase energy consumption, and the device usually sucks out the cement ground into powder by wind power, but the partially formed ultrafine cement powder is accumulated at the lower end of the inner part of the ball mill barrel, and the suction efficiency is poor. It can bring better results in cement production.

[0004] In the process of grinding cement, the existing grinding device usually grinds cement of different particle sizes together, resulting in low grinding efficiency and easily causing insufficient grinding. Therefore, in order to solve the above problems, an ultrafine cement grinding device is proposed. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model proposes an ultra-fine cement grinding device.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the ultra-fine cement grinding device described in the utility model comprises a base, a support base is installed on the base, a cylinder is fixedly installed on the support base, a feed pipe is welded on the cylinder, a pipe cover is welded on the feed pipe, a guide pipe is welded on the feed pipe, a crushing bin is installed on the guide pipe, a first motor is installed on the outer wall of the crushing bin through the machine base, a first rotating rod is installed on the output shaft of the first motor, the first rotating rod is rotatably installed on the inner wall of the crushing bin, a second rotating rod is rotatably installed on the inner wall of the crushing bin, multiple groups of crushing knives are installed on the first rotating rod and the second rotating rod, and a first gear is sleeved on the first rotating rod. The second rotating rod is sleeved with a second gear, the first gear and the second gear are meshed with each other, a second motor is installed on the side wall of the pipe cover through a machine base, a third rotating rod is installed on the output shaft of the second motor, the third rotating rod is rotatably installed on the inner wall of the pipe cover, and a spiral blade is installed on the third rotating rod. By pouring cement into the crushing bin, the first rotating rod and the second rotating rod drive the crushing knives thereon to crush cement of different particle sizes, so that large particles of cement are crushed into small particles of cement, and the spiral blades push the cement into the rotating cylinder to realize the feeding of cement, and then the cement is crushed in the rotating cylinder. Since the cement particles to be crushed are small, the grinding time is reduced, which is beneficial to improving the grinding efficiency.

[0007] Preferably, a rotating cylinder is rotatably installed on the inner wall of the cylinder, a plurality of steel balls are placed inside the rotating cylinder, a sieve plate is installed on the inner wall of the rotating cylinder, a large gear is fixedly sleeved on the outer wall of the rotating cylinder, the large gear is rotatably connected to the cylinder, a fixing frame is welded on the base, a third motor is installed on the fixing frame through the machine base, a small gear is installed on the output shaft of the third motor, the small gear is rotatably installed on the fixing frame, the small gear and the large gear are meshed with each other, a positioning seat is welded on the base, an end cover is welded on the positioning seat, the end cover is rotatably connected to the large gear, a discharge pipe is installed on the end cover, and the discharge pipe has a A discharge hopper is welded, an exhaust slot is opened on the top side of the discharge hopper, a fourth motor is installed on the inner wall of the discharge hopper through a machine base, a rotor is fixedly installed on the output shaft of the fourth motor, a fan blade is installed on the rotor, and a filter plate is installed on the inner wall of the discharge hopper. Cement enters the rotating cylinder through the steel ball and crushes the cement through the impact force. At the same time, the discharge hopper generates suction for the ultrafine cement, and the ultrafine cement moves into the discharge hopper with the gas. When the fourth motor stops working, the ultrafine cement falls downward under the action of gravity and is discharged from the discharge hopper. This structure can quickly discharge the ultrafine cement and avoid the accumulation of ultrafine cement in the rotating cylinder, which is beneficial to improving the discharge efficiency.

[0008] The utility model is beneficial in that:

[0009] 1. The utility model pours cement into a crushing bin, and the first rotating rod and the second rotating rod drive the crushing knives thereon to crush cement of different particle sizes, so that large particles of cement are crushed into small particles of cement, and the spiral blades push the cement into the rotating drum, thereby realizing the feeding of cement, and then the cement is crushed in the rotating drum. Since the cement particles to be crushed are small, the grinding time is reduced, which is beneficial to improving the grinding efficiency.

[0010] 2. In the utility model, cement enters the rotating drum, and the steel balls crush the cement through impact force. At the same time, the discharge hopper generates suction for the ultrafine cement, and the ultrafine cement moves into the discharge hopper along with the gas. When the fourth motor stops working, the ultrafine cement falls downward under the action of gravity and is discharged from the discharge hopper. This structure can quickly discharge the ultrafine cement and avoid the accumulation of ultrafine cement in the rotating drum, which is beneficial to improving the discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a schematic diagram of a three-dimensional structure from a first-person perspective;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the crushing bin;

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the spiral blade;

[0015] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the cylinder;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure at the discharge hopper.

[0017] In the figure: 1. base; 2. support seat; 3. cylinder; 4. feed pipe; 5. pipe cover; 6. guide pipe; 7. crushing bin; 8. first motor; 9. first rotating rod; 10. second rotating rod; 11. crushing knife; 12. first gear; 13. second gear; 14. second motor; 15. third rotating rod; 16. spiral blade; 17. rotating cylinder; 18. steel ball; 19. sieve plate; 20. large gear; 21. fixing frame; 22. third motor; 23. small gear; 24. positioning seat; 25. end cover; 26. discharge pipe; 27. discharge hopper; 28. exhaust slot; 29. ​​fourth motor; 30. rotor; 31. fan blade; 32. filter plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 As shown, an ultrafine cement grinding device comprises a base 1, a support base 2 is mounted on the base 1, a cylinder 3 is fixedly mounted on the support base 2, a feed pipe 4 is welded on the cylinder 3, a pipe cover 5 is welded on the feed pipe 4, a guide pipe 6 is welded on the feed pipe 4, a crushing bin 7 is mounted on the guide pipe 6, a first motor 8 is mounted on the outer wall of the crushing bin 7 through the base, a first rotating rod 9 is mounted on the output shaft of the first motor 8, the first rotating rod 9 is rotatably mounted on the inner wall of the crushing bin 7, and a second rotating rod 10 is rotatably mounted on the inner wall of the crushing bin 7 A plurality of groups of crushing knives 11 are installed on the first rotating rod 9 and the second rotating rod 10, a first gear 12 is sleeved on the first rotating rod 9, a second gear 13 is sleeved on the second rotating rod 10, the first gear 12 and the second gear 13 are meshed with each other, a second motor 14 is installed on the side wall of the pipe cover 5 through a machine base, a third rotating rod 15 is installed on the output shaft of the second motor 14, the third rotating rod 15 is rotatably installed on the inner wall of the pipe cover 5, and a spiral blade 16 is installed on the third rotating rod 15; when working, the existing grinding device is used to grind cement During the grinding process, cement of different particle sizes is usually ground together, resulting in low grinding efficiency and the phenomenon of insufficient grinding. By pouring cement into the crushing bin 7, the first motor 8 is operated to drive the first rotating rod 9 to rotate, the first rotating rod 9 drives the first gear 12 thereon to rotate, the first gear 12 drives the second gear 13 to rotate, and the second gear 13 drives the second rotating rod 10 to rotate, that is, the first rotating rod 9 and the second rotating rod 10 move relatively synchronously, the first rotating rod 9 and the second rotating rod 10 drive the crushing knives 11 thereon to crush cement of different particle sizes, so that large particles of cement are crushed into small particles of cement; then the crushed cement falls into the feeding pipe 4, and the second motor 14 is operated to drive the third rotating rod 15 to rotate, the third rotating rod 15 drives the spiral blade 16 to rotate, and the spiral blade 16 pushes the cement into the rotating cylinder 17, so as to realize the feeding of cement, and then the cement is crushed in the rotating cylinder 17. Since the cement particles to be crushed are small, the grinding time is reduced, which is conducive to improving the grinding efficiency.

[0020] See also Figure 4-5As shown, a rotating cylinder 17 is rotatably mounted on the inner wall of the cylinder 3, a plurality of steel balls 18 are placed inside the rotating cylinder 17, a sieve plate 19 is mounted on the inner wall of the rotating cylinder 17, a large gear 20 is fixedly sleeved on the outer wall of the rotating cylinder 17, the large gear 20 is rotatably connected to the cylinder 3, a fixing frame 21 is welded on the base 1, a third motor 22 is mounted on the fixing frame 21 through a machine base, a pinion 23 is mounted on the output shaft of the third motor 22, the pinion 23 is rotatably mounted on the fixing frame 21, the pinion 23 and the large gear 20 are meshed with each other, a positioning seat 24 is welded on the base 1, and the positioning seat 24 is An end cover 25 is welded, the end cover 25 is rotatably connected with the large gear 20, a discharge pipe 26 is installed on the end cover 25, a discharge hopper 27 is welded on the discharge pipe 26, an exhaust slot 28 is opened on the top side of the discharge hopper 27, a fourth motor 29 is installed on the inner wall of the discharge hopper 27 through a machine base, a rotor 30 is fixedly installed on the output shaft of the fourth motor 29, a fan blade 31 is installed on the rotor 30, and a filter plate 32 is installed on the inner wall of the discharge hopper 27; when working, in the process of grinding cement by the existing grinding device, ultrafine cement is easily accumulated in the rotating cylinder 17, resulting in low discharge efficiency, and the cement is fed into the rotating cylinder 17. The third motor 22 is operated to drive the small gear 23 to rotate, the small gear 23 drives the large gear 20 to rotate, and the large gear 20 drives the rotating cylinder 17 to rotate. Under the action of centrifugal force and friction, as the rotating cylinder 17 reaches a certain height, when its own gravity is greater than the centrifugal force, the cement and steel balls 18 in the rotating cylinder 17 are ejected or rolled down from the inner wall of the rotating cylinder 17, and the steel balls 18 crush the cement by the impact force; at the same time, the fourth motor 29 is operated to drive the rotor 30 to rotate at a high speed, and the rotor 30 drives the fan blades 31 to rotate at a high speed, and the cement and steel balls 18 in the rotating cylinder 17 are ejected or rolled down when the rotating cylinder 17 reaches a certain height. The gas flows from the discharge pipe 26 along the discharge hopper 27 until it is discharged from the exhaust slot 28 on the top side of the discharge hopper 27. The discharge hopper 27 generates suction on the ultrafine cement, and the ultrafine cement moves into the discharge hopper 27 along with the gas, while the cement with larger particles is blocked by the sieve plate 19, and the ultrafine cement is blocked by the filter plate 32 of the discharge hopper 27. The fourth motor 29 operates intermittently. When the fourth motor 29 stops operating, the ultrafine cement falls downward under the action of gravity and is discharged from the discharge hopper 27. This structure can quickly discharge the ultrafine cement and avoid the ultrafine cement from accumulating in the rotating drum 17, which is beneficial to improving the discharge efficiency.

[0021] Working principle: In the process of grinding cement, the existing grinding device usually grinds cement of different particle sizes together, resulting in low grinding efficiency and easy to cause insufficient grinding. By pouring cement into the crushing bin 7, the first motor 8 is operated to drive the first rotating rod 9 to rotate, the first rotating rod 9 drives the first gear 12 thereon to rotate, the first gear 12 drives the second gear 13 to rotate, and the second gear 13 drives the second rotating rod 10 to rotate, that is, the first rotating rod 9 and the second rotating rod 10 move relatively synchronously, and the first rotating rod 9 and the second rotating rod 10 drive the crushing knives 11 thereon to rotate. Cement of different particle sizes is crushed, so that large particles of cement are crushed into small particles of cement; then the crushed cement falls into the feed pipe 4, and the second motor 14 is operated to drive the third rotating rod 15 to rotate, and the third rotating rod 15 drives the spiral blade 16 to rotate, and the spiral blade 16 pushes the cement into the rotating cylinder 17, so as to realize the feeding of cement, and then the cement is crushed in the rotating cylinder 17. Since the cement particles to be crushed are small, the grinding time is reduced, which is conducive to improving the grinding efficiency; in the process of grinding cement by the existing grinding device, ultrafine cement is easily accumulated in the rotating cylinder 17 , resulting in low discharge efficiency, the cement enters the rotating drum 17, and is driven by the third motor 22 to rotate the small gear 23, the small gear 23 drives the large gear 20 to rotate, and the large gear 20 drives the rotating drum 17 to rotate. Under the action of centrifugal force and friction, as the rotating drum 17 reaches a certain height, when its own gravity is greater than the centrifugal force, the cement and steel balls 18 in the rotating drum 17 are ejected or rolled down from the inner wall of the rotating drum 17, and the steel balls 18 crush the cement by the impact force; at the same time, the fourth motor 29 is operated to drive the rotor 30 to rotate at a high speed, and the rotor 30 drives the fan blades 31 to rotate at a high speed, The gas in the rotating drum 17 flows from the discharge pipe 26 along the discharge hopper 27 until it is discharged from the exhaust slot 28 on the top side of the discharge hopper 27. The discharge hopper 27 generates suction on the ultrafine cement, and the ultrafine cement moves into the discharge hopper 27 along with the gas, while the cement with larger particles is blocked by the sieve plate 19, and the ultrafine cement is blocked by the filter plate 32 of the discharge hopper 27. The fourth motor 29 operates intermittently. When the fourth motor 29 stops operating, the ultrafine cement falls downward under the action of gravity and is discharged from the discharge hopper 27. This structure can quickly discharge the ultrafine cement and avoid the accumulation of ultrafine cement in the rotating drum 17, which is beneficial to improving the discharge efficiency.

[0022] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An ultrafine cement grinding device, characterized in that: The invention comprises a base (1), a support base (2) is mounted on the base (1), a cylinder (3) is fixedly mounted on the support base (2), a feed pipe (4) is welded on the cylinder (3), a pipe cover (5) is welded on the feed pipe (4), a guide pipe (6) is welded on the feed pipe (4), a crushing bin (7) is mounted on the guide pipe (6), a first motor (8) is mounted on the outer wall of the crushing bin (7) through the base, a first rotating rod (9) is mounted on the output shaft of the first motor (8), the first rotating rod (9) is rotatably mounted on the inner wall of the crushing bin (7), and a second rotating rod (9) is rotatably mounted on the inner wall of the crushing bin (7). A rotating rod (10), a plurality of groups of crushing knives (11) are installed on the first rotating rod (9) and the second rotating rod (10), a first gear (12) is sleeved on the first rotating rod (9), a second gear (13) is sleeved on the second rotating rod (10), the first gear (12) and the second gear (13) are meshed with each other, a second motor (14) is installed on the side wall of the pipe cover (5) through a machine base, a third rotating rod (15) is installed on the output shaft of the second motor (14), the third rotating rod (15) is rotatably installed on the inner wall of the pipe cover (5), and a spiral blade (16) is installed on the third rotating rod (15).

2. The ultrafine cement grinding device according to claim 1, characterized in that: A rotating cylinder (17) is rotatably mounted on the inner wall of the cylinder body (3), a plurality of steel balls (18) are placed inside the rotating cylinder (17), and a sieve plate (19) is mounted on the inner wall of the rotating cylinder (17).

3. The ultrafine cement grinding device according to claim 2, characterized in that: A large gear (20) is fixedly sleeved on the outer wall of the rotating cylinder (17), and the large gear (20) is rotatably connected to the cylinder body (3).

4. The ultrafine cement grinding device according to claim 1, characterized in that: A fixing frame (21) is welded on the base (1); a third motor (22) is mounted on the fixing frame (21) through a machine base; a pinion (23) is mounted on an output shaft of the third motor (22); the pinion (23) is rotatably mounted on the fixing frame (21); and the pinion (23) and the large gear (20) are meshed with each other.

5. The ultrafine cement grinding device according to claim 1, characterized in that: A positioning seat (24) is welded on the base (1), an end cover (25) is welded on the positioning seat (24), the end cover (25) is rotatably connected to the large gear (20), and a discharge pipe (26) is installed on the end cover (25).

6. The ultrafine cement grinding device according to claim 5, characterized in that: A discharge hopper (27) is welded to the discharge pipe (26), an exhaust slot (28) is provided on the top side of the discharge hopper (27), a fourth motor (29) is mounted on the inner wall of the discharge hopper (27) through a machine base, a rotor (30) is fixedly mounted on the output shaft of the fourth motor (29), a fan blade (31) is mounted on the rotor (30), and a filter plate (32) is mounted on the inner wall of the discharge hopper (27).

Images