Ball mill for cement production

Abstract

The invention relates to the technical field of cement ball milling equipment, in particular to a ball mill for cement production, which comprises a rotating cylinder and a driving gear ring, the two ends of the rotating cylinder are rotatably connected through the driving gear ring, the upper and lower ends of the rotating cylinder are provided with regulation and control assemblies, and the two ends of the rotating cylinder are provided with material control assemblies. And the regulation and control assembly comprises a limiting top frame and a driving bottom frame, the limiting top frame is arranged at the top end of the rotating cylinder, the driving bottom frame is arranged at the bottom end of the rotating cylinder, a driving motor is arranged at one end of the driving bottom frame, and an air control pump machine is arranged in the center of the interior of the limiting top frame. Through the arranged material control assembly, the equipment can conduct more efficient cement raw material grinding machining operation in the cement ball mill, a material grinding ball body can conduct limiting rolling operation along a limiting ring base on the inner wall of a rotating cylinder, and cement raw materials in a limiting ring groove are subjected to matched rolling; and the ground cement raw materials flow out from the discharge ring net of the side discharge ring seat.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cement ball mill equipment, in particular to a cement production ball mill. BACKGROUND

[0002] The cement ball mill is a device for grinding, which is mainly applied to grinding of finished products and raw materials in a cement plant, and is also suitable for grinding of various ores and other grindable materials in metallurgical, chemical and electric power enterprises. The material is uniformly fed into the first bin of the ball mill through the feeding device and the hollow shaft screw. The first bin is provided with a stepped lining plate or a corrugated lining plate and contains steel balls of different specifications. The cylinder rotates to generate a centrifugal force to bring the steel balls to a certain height and then make the steel balls fall, thereby producing a heavy blow and grinding effect on the material. After the material is coarsely ground in the first bin, the material enters the second bin through the single-layer partition plate. The second bin is inlaid with a flat lining plate and contains steel balls to further grind the material. The powdered material is discharged through the discharge grating to complete the grinding work. The main working part of the material grinding mill occurs on the horizontally low-speed rotating cylinder. When the cylinder is driven to rotate by the transmission device, the grinding body adheres to the lining plate on the inner wall of the mill cylinder and rotates together due to the action of the inertial centrifugal force. The grinding body is brought to a certain height and then freely falls due to the action of gravity. At this time, the grinding body crushes the material in the cylinder. In addition to the cyclic movement of the grinding body in the rotating mill, the grinding body also slides and rolls, so that the grinding action occurs between the grinding body, the lining plate and the ground material to grind the material. While the material is subjected to impact crushing and grinding, the material slowly flows from the feeding end to the discharging end due to the difference in the material surface height between the feeding end and the discharging end, thereby completing the grinding work.

[0003] For example, the patent document with the announcement number CN 115591622 B discloses a cement production ball mill, which relates to the technical field of cement production and comprises a base and an outer rotating cylinder. The inner part of the outer rotating cylinder is annularly provided with fixed plates, and the fixed plates are fixedly connected with the same inner lining plate. The cement production ball mill has the following advantages. When the cement ball milling operation is performed, the No. 1 driving motor drives the outer rotating cylinder to rotate. During the rotation, the steel balls are lifted to a high position under the action of the rotation. In the lifting process, the No. 2 driving motor is started. The No. 2 driving motor drives the lifting pieces on the outer side of each rotating ring plate to lift the steel balls that contact the lifting pieces, thereby increasing the upper limit of the lifting height of the steel balls. At the same time, the rotating ring plates are intermittently distributed, so that there is a height difference between the steel balls. When the steel balls rotate to the highest position, the steel balls impact the cement. The steel balls at different height levels cooperate with each other to improve the impact and grinding effect.

[0004] However, due to the limitation of the structure, the cement raw material can only be loaded and unloaded in the ball mill once during the actual use process, and the cement raw material cannot flow and be fed quickly in the ball mill during the processing process. The ground raw material also occupies space in the ball mill, which results in low efficiency of the whole device for ball milling of cement raw material. During the ball milling process, the ball cannot be in full contact with the cement raw material, and the device cannot be controlled at a speed suitable for ball milling. Therefore, it is necessary to design a ball mill for cement production to solve the above problems. SUMMARY

[0005] The present application aims to provide a ball mill for cement production to solve the problem that the existing structure can only load and unload cement raw material in the ball mill once during the actual use process due to the limitation of the structure, and the cement raw material cannot flow and be fed quickly in the ball mill during the processing process. The ground raw material also occupies space in the ball mill, which results in low efficiency of the whole device for ball milling of cement raw material. During the ball milling process, the ball cannot be in full contact with the cement raw material, and the device cannot be controlled at a speed suitable for ball milling. Therefore, it is necessary to design a ball mill for cement production to solve the above problems.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a ball mill for cement production, comprising a rotating cylinder, the two ends of the rotating cylinder are provided with a driving gear ring, the two ends of the rotating cylinder are rotatably connected through the driving gear ring, the upper and lower ends of the rotating cylinder are provided with a control assembly, and the two ends of the rotating cylinder are provided with a material control assembly. The control assembly comprises a limiting top frame and a driving bottom frame, the top end of the rotating cylinder is provided with a limiting top frame, the bottom end of the rotating cylinder is provided with a driving bottom frame, one end of the driving bottom frame is provided with a driving motor, the inside center of the limiting top frame is provided with a gas control pump, and the limiting top frame and the driving bottom frame are mutually adapted with the rotating cylinder in an up-down manner. The material control assembly comprises an air inlet frame, one end of the rotating cylinder is provided with an air inlet frame, the other end of the rotating cylinder is provided with an air outlet frame, and the ends of the air inlet frame and the air outlet frame away from each other are fixedly connected with a overhead seat, and the bottom ends of the two groups of overhead seats are fixedly connected with a support seat.

[0007] Preferably, the inside center of the air outlet frame is provided with a suction fan, the outer surface of the suction fan is sleeved with an inner ring mesh groove, the outer surface of the inner ring mesh groove is sleeved with an outer ring mesh groove, one end of the air inlet frame is fixedly connected with a feeding seat through an overhead seat, one end of the air outlet frame is fixedly connected with a discharging seat through an overhead seat, and the feeding seat and the discharging seat are respectively connected with the inside of the rotating cylinder through the air inlet frame and the air outlet frame.

[0008] Preferably, the inside of the driving base is provided with a driving roller through a driving motor, both ends of the driving roller are provided with driving gears, both end surfaces of the driving base are provided with driving grooves, and the driving grooves are engaged with the driving tooth rings at both ends of the rotating cylinder through the driving gears.

[0009] Preferably, the bottom of the limiting top frame is provided with a first lifting air bag, the first lifting air bag is connected with a gas control pump, the bottom end of the first lifting air bag is fixedly connected with a speed reducer plate, and the speed reducer plate is attached to the side surface of the rotating cylinder.

[0010] Preferably, both ends of the gas control pump are fixedly connected with gas control pipes, one end of the gas control pipe is provided with a gas control valve seat, and both ends of the bottom of the limiting top frame are fixedly connected with clamping seats.

[0011] Preferably, the inside of the clamping seat is provided with a second lifting air bag, the second lifting air bag is connected with the gas control valve seat, the bottom end of the second lifting air bag is fixedly connected with a speed reduction clamping block, and the clamping seat is attached to the side top end of the driving tooth ring through the second lifting air bag and the speed reduction clamping block.

[0012] Preferably, both ends of the limiting top frame are fixedly connected with overhead blocks, the bottom end of the overhead block is connected with the air inlet frame and the air outlet frame, and the limiting top frame is overhead installed on the top of the rotating cylinder through the overhead block.

[0013] Preferably, the inside of the driving tooth ring is provided with a bearing ring seat, and the rotating cylinder is rotatably connected with the air inlet frame and the air outlet frame through the bearing ring seat.

[0014] Preferably, the inside edge of the rotating cylinder is provided with a material conveying ring groove, both ends of the material conveying ring groove are provided with filter ring meshes, and the inside of the rotating cylinder is uniformly provided with limiting ring seats.

[0015] Preferably, both ends of the limiting ring seat are provided with discharging grid grooves, the inside center of the limiting ring seat is provided with a limiting ring groove, the outer surface center of the limiting ring seat is provided with a discharging ring seat, and the side surface of the discharging ring seat is provided with a discharging ring mesh.

[0016] Compared with the prior art, the present application has the following advantages: The cement production ball mill, through the setting control component, can make the equipment to carry out more efficient cement raw material grinding operation inside the cement ball mill, the abrasive ball can be limited to roll operation along the rotating cylinder inner wall limit ring seat, the cement raw material in the limit ring groove is adapted to roll and press, the ground cement raw material flows out from the discharge ring net of the side discharge ring seat, and the unground raw material is extruded from the two side discharge grating grooves, and the raw material is concentrated to the air supply frame for conveying, and finally discharged from the discharge seat of the air supply frame, which can realize continuous addition of raw materials and timely discharge of worn raw materials, continuously and efficiently complete the ball grinding operation of the cement raw material, avoid the influence of too much internal accumulation of raw materials on the grinding effect of the whole, and reflect the practicality of the equipment design.

[0017] The cement production ball mill, through the setting control component, can make the equipment to carry out more efficient cement raw material grinding operation inside the cement ball mill, the abrasive ball can be limited to roll operation along the rotating cylinder inner wall limit ring seat, the cement raw material in the limit ring groove is adapted to roll and press, the ground cement raw material flows out from the discharge ring net of the side discharge ring seat, and the unground raw material is extruded from the two side discharge grating grooves, and the raw material is concentrated to the air supply frame for conveying, and finally discharged from the discharge seat of the air supply frame, which can realize continuous addition of raw materials and timely discharge of worn raw materials, continuously and efficiently complete the ball grinding operation of the cement raw material, avoid the influence of too much internal accumulation of raw materials on the grinding effect of the whole, and reflect the practicality of the equipment design. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic view of the structure of the application; Figure 2 It is a whole schematic view of the structure of the rotating cylinder, air inlet frame and air outlet frame of the application; Figure 3 It is a whole schematic view of the structure of the driving gear ring of the application; Figure 4 It is a whole schematic view of the structure of the rotating cylinder of the application; Figure 5 It is a whole schematic view of the structure of the limit ring seat of the application; Figure 6 It is a split view schematic view of the structure of the air inlet frame and air outlet frame of the application; Figure 7 It is a whole schematic view of the structure of the driving bottom frame of the application; Figure 8 It is a whole schematic view of the structure of the limit top frame of the application; Figure 9 It is a whole schematic view of the structure of the limit top frame of the application; Figure 1 It is an enlarged schematic view of the structure of A in the application; Figure 10 For the present application Figure 1 Enlarged schematic view of the structure at B in the present application.

[0019] In the figure: 1, rotating cylinder; 2, driving gear ring; 3, limiting top frame; 4, driving bottom frame; 5, driving motor; 6, air control pump machine; 7, air inlet frame; 8, air outlet frame; 9, overhead seat; 10, support seat; 11, feeding seat; 12, discharging seat; 13, driving roller; 14, driving gear; 15, driving groove; 16, first lifting air bag; 17, deceleration plate; 18, air control pipe; 19, air control valve seat; 20, clamping seat; 21, second lifting air bag; 22, deceleration clamping block; 23, overhead block; 24, bearing ring seat; 25, material conveying ring groove; 26, filter ring net; 27, limiting ring seat; 28, discharging grid groove; 29, limiting ring groove; 30, discharging ring seat; 31, discharging ring net; 32, material suction fan; 33, inner ring net groove; 34, outer ring net groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0021] Please refer to Figures 1-10 , the present application provides an embodiment: A cement production ball mill, including rotating cylinder 1, both ends of rotating cylinder 1 are sleeved with driving gear ring 2, both ends of rotating cylinder 1 are rotatably connected through driving gear ring 2, both ends of rotating cylinder 1 are provided with regulating assembly, both ends of rotating cylinder 1 are provided with material control assembly, regulating assembly includes limiting top frame 3 and driving bottom frame 4, the top end of rotating cylinder 1 is provided with limiting top frame 3, the bottom end of rotating cylinder 1 is provided with driving bottom frame 4, one end of driving bottom frame 4 is provided with driving motor 5, the inside center of limiting top frame 3 is provided with gas control pump 6, limiting top frame 3 and driving bottom frame 4 are mutually adapted with rotating cylinder 1, both ends of limiting top frame 3 are fixedly connected with overhead block 23, the bottom end of overhead block 23 is connected with air inlet frame 7 and air outlet frame 8, limiting top frame 3 is installed on the top of rotating cylinder 1 through overhead block 23, the inside of driving gear ring 2 is provided with bearing ring seat 24, rotating cylinder 1 is rotatably connected with air inlet frame 7 and air outlet frame 8 through bearing ring seat 24, the inside edge of rotating cylinder 1 is provided with material conveying ring groove 25, both ends of material conveying ring groove 25 are provided with filter ring net 26, the inside of rotating cylinder 1 is uniformly provided with limiting ring seat 27, both ends of limiting ring seat 27 are provided with discharge grating groove 28, the inside center of limiting ring seat 27 is provided with limiting ring groove 29, the center of the outer surface of limiting ring seat 27 is provided with discharge ring seat 30, the side of discharge ring seat 30 is provided with discharge ring net 31, the material ball can be limited to roll along the limiting ring seat 27 at the inner wall of rotating cylinder 1, the ball falling from each high point can be repeatedly limited to roll along the limiting ring groove 29 of limiting ring seat 27, the cement raw material in the limiting ring groove 29 is adaptively rolled and pressed, the ground cement raw material flows out from discharge ring net 31 of side discharge ring seat 30, and the not completely ground raw material is extruded from both sides of discharge grating groove 28 to be ground again.

[0022] The material control assembly comprises an air inlet frame 7, one end of the rotating cylinder 1 is provided with the air inlet frame 7, the other end of the rotating cylinder 1 is provided with an air outlet frame 8, the air inlet frame 7 and the air outlet frame 8 are fixedly connected with an overhead seat 9 away from each other, the bottom ends of the two groups of overhead seats 9 are fixedly connected with a supporting seat 10, the inside center of the air outlet frame 8 is provided with a material suction fan 32, the outer surface of the material suction fan 32 is sleeved with an inner ring mesh groove 33, the outer surface of the inner ring mesh groove 33 is sleeved with an outer ring mesh groove 34, one end of the air inlet frame 7 is fixedly connected with a feeding seat 11 through the overhead seat 9, one end of the air outlet frame 8 is fixedly connected with a discharging seat 12 through the overhead seat 9, the feeding seat 11 and the discharging seat 12 are respectively connected with the inside of the rotating cylinder 1 through the air inlet frame 7 and the air outlet frame 8, the inside of the driving chassis 4 is provided with a driving roller 13 through the driving motor 5, the two ends of the driving roller 13 are provided with driving gears 14, the surfaces of the two ends of the driving chassis 4 are provided with driving grooves 15, the inside of the driving grooves 15 is engaged with the driving tooth rings 2 at the two ends of the rotating cylinder 1 through the driving gears 14, the bottom of the limiting top bracket 3 is provided with a first lifting air bag 16, the first lifting air bag 16 is connected with the air control pump 6, the bottom end of the first lifting air bag 16 is fixedly connected with a speed reduction plate 17, the speed reduction plate 17 is attached to the side surface of the rotating cylinder 1, the two ends of the air control pump 6 are fixedly connected with air control pipes 18, one end of the air control pipes 18 is provided with an air control valve seat 19, the bottom of the limiting top bracket 3 is fixedly connected with clamping seats 20 at the two ends, the inside of the clamping seat 20 is provided with a second lifting air bag 21, the second lifting air bag 21 is connected with the air control valve seat 19, the bottom end of the second lifting air bag 21 is fixedly connected with a speed reduction clamping block 22, the clamping seat 20 is attached to the side top end of the driving tooth ring 2 through the second lifting air bag 21 and the speed reduction clamping block 22, the air control pump 6 in the inside center of the limiting top bracket 3 can be started to drive the first lifting air bag 16 and the speed reduction plate 17 at the bottom to adapt to the top of the side surface of the rotating cylinder 1, so that the stable speed control operation of the rotating cylinder 1 rotating operation is realized, the ball milling efficiency of the cement raw materials in the rotating cylinder 1 is adjusted in real time, and the air control pump 6 can also control the second lifting air bag 21 in the clamping seat 20 through the air control pipes 18 and the air control valve seat 19, so that the speed reduction clamping block 22 at one end is top-connected to the side top end of the driving tooth ring 2, and the precise speed control operation of the whole rotating cylinder 1 is also realized.

[0023] Working principle: in use, the user first pour the cement raw materials from the feed seat 11, then the cement raw materials from the overhead seat 9 along the air inlet frame 7 into the rotating cylinder 1 inside, at this time can be driven by the drive chassis 4 drive rotating cylinder 1 as a whole, driven by the bearing ring seat 24 at both ends of the two end drive gear ring 2 and, along the two end air inlet frame 7 and air outlet frame 8 for stable rotation operation, so that the abrasive ball inside the rotating cylinder 1 for fast rolling adjustment operation, rotating cylinder 1 rotating process, abrasive ball can be along the rotating cylinder 1 inner wall limit ring seat 27 for limit rolling operation, each time the ball falls down, can be along the limit ring groove 29 of the limit ring seat 27 for repeated limit rolling, the limit ring groove 29 inside the cement raw materials for adaptive rolling, grinding finished cement raw materials from the side of the discharge ring seat 30 discharge ring network 31, not completely ground raw materials are extruded from both sides of the discharge grid groove 28, again for other ball grinding operation, at the same time, the discharge ring network 31 discharge finished grinding material can enter into the material conveying groove 25, daily can start the suction fan 32 in the air inlet frame 8, with the outer surface of the suction fan 32 and the inner ring network groove 33, for the conveying operation of the cement raw materials in the rotating cylinder 1, at this time the inner ring network groove 33 in the rotating cylinder 1 inside the center material to one end blowing, more evenly in the rotating cylinder 1 inside the ball grinding operation, the outer ring network groove 34 in the rotating cylinder 1 material conveying groove 25, for the rapid blowing conveying operation of the grinding finished material, which is concentrated to the air outlet frame 8 inside for conveying, finally from the air outlet frame 8 of the discharge seat 12 for discharge, such design device can realize continuous adding raw materials and timely discharge of the worn raw materials, continuous and efficient completion of the ball grinding operation of the cement raw materials, avoid internal accumulation of too much raw materials affect the overall grinding effect, in the daily use process, the staff can start the drive motor 5 at one end of the drive chassis 4, make it drive the drive roller 13 and drive gear 14 at one end to rotate and adjust, then the drive gear 14 is in the drive groove 15 to drive the meshing connection of the drive gear ring 2 to rotate and adjust, so that the drive gear ring 2 drives the rotating cylinder 1 to rotate and drive along the two end bearing ring seat 24, at this time, because the drive gear 14 and the drive gear ring 2 are double ended design, so that the drive gear ring 2 at both ends of the rotating cylinder 1 is synchronous force, so as to ensure that the rotating cylinder 1 rotates more stably, daily also can start the control air pump 6 in the limit top frame 3 inside the center, make it drive the first lifting air bag 16 and the speed reducer plate 17 at the bottom, for adaptive top connection on the side of the rotating cylinder 1, and then realize the stable speed control operation of the rotating cylinder 1 rotating operation, real-time control of the ball milling efficiency of the cement raw materials in the rotating cylinder 1, at the same time, the control air pump 6 can also control the second lifting air bag 21 in the clamp seat 20 through the control air pipe 18 and the control air valve seat 19, so that the speed reduction clamp block 22 at one end is top connected to the side top end of the drive gear ring 2, also realize the precise speed control operation of the whole rotating cylinder 1,Meet the needs of different cement production with ball mill, above is the whole working principle of the application.

[0024] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics thereof. The presently disclosed embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims shall be construed as limiting the scope of the claims.

Claims

1. A ball mill for cement production, comprising a rotating cylinder (1), characterized in that: The two ends of the rotating cylinder (1) are fitted with drive gear rings (2), and the two ends of the rotating cylinder (1) are rotatably connected by the drive gear rings (2). The upper and lower ends of the rotating cylinder (1) are provided with adjustment components, and the two ends of the rotating cylinder (1) are provided with material control components. The control assembly includes a limiting top frame (3) and a drive base frame (4). The top of the rotating cylinder (1) is provided with a limiting top frame (3), and the bottom of the rotating cylinder (1) is provided with a drive base frame (4). One end of the drive base frame (4) is provided with a drive motor (5). The center of the limiting top frame (3) is provided with a control air pump (6). The limiting top frame (3) and the drive base frame (4) are mutually adapted to the rotating cylinder (1). The material control assembly includes an air inlet frame (7), one end of the rotating cylinder (1) is provided with an air inlet frame (7), the other end of the rotating cylinder (1) is provided with an air outlet frame (8), the ends of the air inlet frame (7) and the air outlet frame (8) that are far apart from each other are fixedly connected with a support seat (9), and the bottom ends of the two sets of support seats (9) are fixedly connected with a support seat (10).

2. The ball mill for cement production according to claim 1, characterized in that: The air outlet frame (8) is provided with a suction fan (32) at its internal center. The outer surface of the suction fan (32) is fitted with an inner ring mesh groove (33), and the outer surface of the inner ring mesh groove (33) is fitted with an outer ring mesh groove (34). One end of the air inlet frame (7) is fixedly connected to a feed seat (11) through a support seat (9). One end of the air outlet frame (8) is fixedly connected to a discharge seat (12) through a support seat (9). The feed seat (11) and the discharge seat (12) are respectively connected to the interior of the rotating cylinder (1) through the air inlet frame (7) and the air outlet frame (8).

3. A ball mill for cement production according to claim 1, characterized in that: The drive base (4) is equipped with a drive roller (13) inside the drive motor (5). The two ends of the drive roller (13) are equipped with drive gears (14). The two ends of the drive base (4) are provided with drive grooves (15). The drive grooves (15) are meshed with the drive gear rings (2) at both ends of the rotating cylinder (1) through the drive gears (14).

4. A ball mill for cement production according to claim 1, characterized in that: The bottom of the limiting top frame (3) is provided with a first lifting airbag (16), which is connected to the air pump (6). The bottom end of the first lifting airbag (16) is fixedly connected with a speed reduction plate (17), which is in contact with the side of the rotating cylinder (1).

5. A ball mill for cement production according to claim 1, characterized in that: The air pump (6) is fixedly connected to both ends with an air control pipe (18), and an air control valve seat (19) is provided at one end of the air control pipe (18). The bottom ends of the limiting top frame (3) are fixedly connected with snap-fit ​​seats (20).

6. A ball mill for cement production according to claim 5, characterized in that: The snap-fit ​​seat (20) is provided with a second lifting airbag (21) inside. The second lifting airbag (21) is connected to the air control valve seat (19). The bottom end of the second lifting airbag (21) is fixedly connected to a deceleration block (22). The snap-fit ​​seat (20) is in contact with the top side of the drive gear ring (2) through the second lifting airbag (21) and the deceleration block (22).

7. A ball mill for cement production according to claim 1, characterized in that: The two ends of the limiting top frame (3) are fixedly connected to the overhead blocks (23). The bottom end of the overhead blocks (23) is connected to the air inlet frame (7) and the air outlet frame (8). The limiting top frame (3) is installed on the top of the rotating cylinder (1) through the overhead blocks (23).

8. A ball mill for cement production according to claim 1, characterized in that: The drive gear ring (2) is provided with a bearing ring seat (24) inside, and the rotating cylinder (1) is rotatably connected to the air inlet frame (7) and the air outlet frame (8) respectively through the bearing ring seat (24).

9. A ball mill for cement production according to claim 1, characterized in that: The inner edge of the rotating cylinder (1) is provided with a material conveying ring groove (25), and filter rings (26) are provided at both ends of the material conveying ring groove (25). Limiting ring seats (27) are uniformly arranged inside the rotating cylinder (1).

10. A ball mill for cement production according to claim 9, characterized in that: The limiting ring seat (27) has discharge grid grooves (28) at both ends, a limiting ring groove (29) is opened in the center of the inner side of the limiting ring seat (27), a discharge ring seat (30) is provided in the center of the outer surface of the limiting ring seat (27), and a discharge ring mesh (31) is provided on the side of the discharge ring seat (30).

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