Grate plate structure of discharge port of ball mill

Abstract

The utility model discloses a grate plate structure of a discharge port of a ball mill, which relates to the technical field of ball mills and comprises a discharge port barrel, a fixed grate plate, a movable grate plate, two pairs of limiting rods and a driving component, the fixed grate plate is arranged in the discharge port barrel, one ends of the two pairs of limiting rods are fixedly connected with the side surface of the movable grate plate, and the other ends of the two pairs of limiting rods are fixedly connected with the side surface of the movable grate plate. Each pair of limiting rods are arranged in parallel, the two pairs of limiting rods are symmetrically designed with the circle center of the movable grate plate as the center, limiting holes are formed in the positions, corresponding to the limiting rods, of the discharging port barrel, the limiting rods movably penetrate through the limiting holes, and a movable plate is arranged at one end of the outer side of each pair of limiting rods; the position of the movable grate plate and the dislocation of the fixed grate plate are driven and adjusted through the driving assembly, so that the first grate holes and the second grate holes are staggered, the passing area between the first grate holes and the second grate holes is changed, the purpose of filtering powder with different thicknesses can be achieved, manual disassembly and assembly are not needed, and the working efficiency of adjusting the sizes of the filter holes is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball mills, in particular to a grate plate structure at the discharge port of a ball mill. Background Technique

[0002] A ball mill consists of a horizontal cylinder body, hollow shafts for feeding and discharging, grinding heads, etc. The cylinder body is a long cylinder, and grinding media are installed inside the cylinder. The cylinder body is made of steel plates and is fixed with steel liners. The grinding media are generally steel balls and are loaded into the cylinder according to different diameters and a certain proportion. Steel segments can also be used as grinding media. They are selected according to the particle size of the grinding material. The material is fed into the cylinder body through the hollow shaft at the feeding end of the ball mill. When the cylinder body of the ball mill rotates, due to the action of inertia, centrifugal force, and friction, the grinding media adhere to the cylinder liner and are carried away by the cylinder body. When they are carried to a certain height, they fall due to their own gravity. The falling grinding media act like projectiles to break and grind the material in the cylinder body. Finally, the ground powder is discharged through the discharge grate plate to complete the crushing and grinding operations.

[0003] In the prior art, the grate plate at the discharge port is generally directly fixed on the inner wall of the discharge port through multiple screws. When it is desired to change the size of the filter holes of the grate plate, the machine can only be stopped and the personnel need to disassemble and replace it, and the whole process is inefficient. Content of the Utility Model

[0004] In view of the above deficiencies of the prior art, the utility model provides a grate plate structure at the discharge port of a ball mill. By driving the driving component to adjust the dislocation of the position of the movable grate plate and the fixed grate plate, the first grate holes and the second grate holes are staggered, so that the area that can pass between the two is changed, achieving the purpose of being able to filter powders of different thicknesses, without manual disassembly and installation, and improving the working efficiency of adjusting the size of the filter holes.

[0005] To achieve the above object, the utility model is realized through the following technical solutions: A grate plate structure at the discharge port of a ball mill includes a discharge port cylinder body, a fixed grate plate, a movable grate plate, two pairs of limit rods, and a driving component. The fixed grate plate is arranged inside the discharge port cylinder body. One end of the two pairs of limit rods is fixedly connected to the side surface of the movable grate plate. Each pair of limit rods is arranged in parallel and the two pairs of limit rods are symmetrically designed with the center of the movable grate plate as the center. Limit holes are provided on the discharge port cylinder body corresponding to the positions of the limit rods, and the limit rods movably penetrate through the limit holes. A movable plate is arranged at the outer end of each pair of limit rods. The driving component can drive the movable plate to move along the moving direction of the limit rods. The surface of the movable grate plate is designed to be in contact with the fixed grate plate, and the outer diameter of the movable grate plate is smaller than that of the fixed grate plate. The fixed grate plate is provided with first grate holes, and the movable grate plate is provided with second grate holes corresponding to the first grate holes. The movement of the movable grate plate can stagger the second grate holes from the first grate holes.

[0006] Preferably, the driving assembly includes a motor and a threaded rod. The motor is fixedly connected to the outer wall of the discharge port cylinder body. One end of the threaded rod is connected to the output end of the motor. A threaded connection hole is formed at the center position of the moving plate, and the threaded rod is screwed into the threaded connection hole.

[0007] Preferably, a portal-shaped fixed seat is arranged outside the outer wall of the discharge port cylinder body corresponding to the outside of the motor, and the outer end of the threaded rod is rotatably connected to the inner side wall of the fixed seat.

[0008] Preferably, a circle of fixing plates is arranged at the edge of the fixed grate plate, and a plurality of threaded fixing holes are arranged on the inner side wall of the discharge port cylinder body corresponding to the fixing plates. The fixing plates and the discharge port cylinder body are fixed by screwing the screws through the fixing plates and into the threaded fixing holes.

[0009] Preferably, the fixing plates and the fixed grate plate are integrally formed.

[0010] Preferably, the shapes of the first grate holes and the second grate holes are square.

[0011] The utility model provides a grate plate structure for the discharge port of a ball mill, which has the following beneficial effects:

[0012] 1. By driving the driving assembly to adjust the dislocation of the moving grate plate and the fixed grate plate, the first grate holes and the second grate holes are staggered, so that the area that can pass between the two is changed, achieving the purpose of filtering different thicknesses of powder materials. There is no need for manual disassembly and installation, improving the working efficiency of adjusting the size of the filter holes.

[0013] 2. In the utility model, the driving assembly includes a motor and a threaded rod. The motor drives the threaded rod to rotate, thereby driving the moving plate screwed to it through the threaded connection hole to move, and then driving the limiting rod to pull the moving grate plate to move and stagger with the fixed grate plate. The driving assembly has a simple structure, and the motor has a self-locking function, ensuring the stability of the adjusted moving grate plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view sectional view of a grate plate structure for the discharge port of a ball mill according to the utility model;

[0015] Figure 2 is the left view sectional view at the A-A position in the utility model; Figure 1 is the front view working schematic diagram of the moving grate plate and the fixed grate plate of the utility model;

[0016] Figure 3 is the left view working schematic diagram of the moving grate plate and the fixed grate plate of the utility model.

[0017] Figure 4 is the left view working schematic diagram of the moving grate plate and the fixed grate plate of the utility model.

[0018] In the figure: 1. discharge port cylinder; 2. fixed plate; 3. fixed grating plate; 4. screw; 5. movable grating plate; 6. limit rod; 7. limit hole; 8. threaded fixing hole; 9. threaded connection hole; 10. motor; 11. threaded rod; 12. fixed seat; 13. movable plate; 31. first grating hole; 51. second grating hole. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figures 1-4 As shown, a ball mill discharge port grate plate structure includes a discharge port cylinder 1, a fixed grate plate 3, a movable grate plate 5, two pairs of limit rods 6 and a drive assembly, wherein the fixed grate plate 3 is arranged in the discharge port cylinder 1, one end of the two pairs of limit rods 6 is fixedly connected to the side surface of the movable grate plate 5, each pair of limit rods 6 is arranged in parallel and the two pairs of limit rods 6 are symmetrically designed with the center of the movable grate plate 5 as the center, and the position of the limit rod 6 on the discharge port cylinder 1 is provided with a limit hole 7 The limit rod 6 is movable and penetrates the limit hole 7. A movable plate 13 is arranged at one end of the outer side of each pair of limit rods 6. The driving assembly can drive the movable plate 13 to move along the movable direction of the limit rod 6. The movable grating plate 5 is designed to fit the surface of the fixed grating plate 3, and the outer diameter of the movable grating plate 5 is smaller than the outer diameter of the fixed grating plate 3. The fixed grating plate 3 is provided with a first grating hole 31, and the movable grating plate 5 is provided with a second grating hole 51 corresponding to the first grating hole 31. The movable grating plate 5 The movement can make the second sieve hole 51 staggered with the first sieve hole 31; the driving assembly includes a motor 10 and a threaded rod 11, the motor 10 is fixedly connected to the outer wall of the discharge port cylinder 1, one end of the threaded rod 11 is connected to the output end of the motor 10, a threaded connection hole 9 is provided at the center of the movable plate 13, and the threaded rod 11 is screwed into the threaded connection hole 9; a door-shaped fixing seat 12 is provided on the outer wall of the discharge port cylinder 1 corresponding to the motor 10, and one end of the outer side of the threaded rod 11 is rotatably connected to the inner wall of the fixing seat 12; a circle of fixing plates 2 is provided at the edge of the fixed sieve plate 3, and a plurality of threaded fixing holes 8 are provided on the inner wall of the discharge port cylinder 1 corresponding to the position of the fixing plate 2, and the fixing plate 2 and the discharge port cylinder 1 are fixed by screws 4 penetrating the fixing plate 2 and screwing them with the threaded fixing holes 8; the fixing plate 2 and the fixed sieve plate 3 are integrally formed; the first sieve hole 31 and the second sieve hole 51 are square in shape.

[0021] The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, which are as follows:

[0022] According to the attached instructions Figures 1-4 As can be seen, for this utility model, only the structural schematic diagram at the position of the grate plate of the discharge port is made, and no overall schematic diagram of the ball mill is made. The existing technology can be adopted for the position. When it is necessary to change the particle size of the powder or granular material for filtration, the driving component is controlled to work, so that it drives the moving plate 13 and the limiting rod 6 to move along the moving direction of the limiting rod 6. Since the limiting rod 6 is slidably connected to the limiting hole 7 of the discharge port cylinder body 1, the stability of the movement of the limiting rod 6 and the moving grate plate 5 connected to the limiting rod 6 can be ensured. Since the moving grate plate 5 is in surface contact with the fixed grate plate 3, and the second grate holes 51 on the moving grate plate 5 correspond to the first grate holes 31 on the fixed grate plate 3 in terms of size and position. In addition, the outer diameter of the moving grate plate 5 of the moving grate plate 5 is smaller than the outer diameter of the fixed grate plate 3, indicating that the moving grate plate 5 has a moving space. Therefore, when the moving grate plate 5 moves, the second grate holes 51 will be staggered relative to the first grate holes 31, as Figure 3 and Figure 4 shown. It can be clearly seen that the passing area is changed, that is, the size of the material that can pass through is changed, so as to achieve the purpose of filtering powders of different thicknesses. During the adjustment process, there is no need to manually disassemble and install the grate plate, which improves the working efficiency of adjusting the size of the filter holes.

[0023] Among them, the driving component includes a motor 10 and a threaded rod 11. The motor 10 is fixedly connected to the outer wall of the discharge port cylinder body 1. One end of the threaded rod 11 is connected to the output end of the motor 10. A threaded connection hole 9 is opened at the central position of the moving plate 13, and the threaded rod 11 is screwed into the threaded connection hole 9. During operation, the motor 10 drives the threaded rod 11 to rotate, thereby driving the moving plate 13 screwed to it through the threaded connection hole 9 to move, and then driving the limiting rod 6 to pull the moving grate plate 5 to move and stagger from the fixed grate plate 3. The structure of the driving component is simple, and the motor 10 has a self-locking function to ensure the stability of the adjusted moving grate plate 5. Here, a gantry-shaped fixed seat 12 is arranged outside the outer wall of the discharge port cylinder body 1 corresponding to the outside of the motor 10, and the outer end of the threaded rod 11 is rotatably connected to the inner side wall of the fixed seat 12, which ensures the stability of the motor 10 and the threaded rod 11 during operation, and also ensures the stability of the movement of the moving plate 13.

[0024] Among them, a ring of fixing plates 2 is arranged at the edge position of the fixed grate plate 3. A plurality of threaded fixing holes 8 are arranged on the inner side wall of the discharge port cylinder body 1 corresponding to the fixing plates 2. The fixing plates 2 and the discharge port cylinder body 1 are fixed by screwing the screws 4 through the fixing plates 2 into the threaded fixing holes 8. The fixing plates 2 and the fixed grate plate 3 are integrally formed, which increases the installation stability.

[0025] In addition, the shapes of the first grate holes 31 and the second grate holes 51 are square, asFigure 3 and Figure 4 As shown, during movement, it moves along the diagonal of the square hole. In this way, the size of the hole changes, but the shape remains unchanged, ensuring the uniformity of the discharge.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grate plate structure for the discharge port of a ball mill, characterized in that, The invention comprises a discharge port cylinder (1), a fixed grate plate (3), a movable grate plate (5), two pairs of limit rods (6) and a driving assembly, wherein the fixed grate plate (3) is arranged in the discharge port cylinder (1), one end of the two pairs of limit rods (6) is fixedly connected to the side surface of the movable grate plate (5), each pair of limit rods (6) is arranged in parallel and the two pairs of limit rods (6) are symmetrically designed with the center of the movable grate plate (5) as the center, and a limit hole (7) is arranged on the discharge port cylinder (1) at a position corresponding to the limit rod (6), the limit rod (6) movably passes through the limit hole (7), and each pair of limit rods (6) is provided with a plurality of limit holes (7) on the discharge port cylinder (1). A movable plate (13) is arranged at one end of the outer side of the limiting rod (6), and the driving assembly can drive the movable plate (13) to move along the moving direction of the limiting rod (6); the movable grating plate (5) is designed to fit the surface of the fixed grating plate (3), and the outer diameter of the movable grating plate (5) is smaller than the outer diameter of the fixed grating plate (3); the fixed grating plate (3) is provided with a first grating hole (31), and the movable grating plate (5) is provided with a second grating hole (51) corresponding to the first grating hole (31); the movable grating plate (5) can move so that the second grating hole (51) is staggered with the first grating hole (31).

2. The grate plate structure at the discharge opening of a ball mill according to claim 1, characterized in that, The driving assembly comprises a motor (10) and a threaded rod (11); the motor (10) is fixedly connected to the outer wall of the discharge port cylinder (1); one end of the threaded rod (11) is connected to the output end of the motor (10); a threaded connection hole (9) is provided at the center of the movable plate (13); and the threaded rod (11) is screwed into the threaded connection hole (9).

3. The grate plate structure of the discharge port of a ball mill according to claim 2, characterized in that, A door-shaped fixing seat (12) is arranged on the outer wall of the discharge port cylinder (1) corresponding to the outside of the motor (10), and one outer end of the threaded rod (11) is rotatably connected to the inner wall of the fixing seat (12).

4. The grid plate structure of the discharge port of a ball mill according to claim 1, characterized in that A circle of fixing plates (2) are arranged at the edge of the fixing grating plate (3), and a plurality of threaded fixing holes (8) are arranged at positions of the inner wall of the discharge port cylinder (1) corresponding to the fixing plates (2). The fixing plates (2) and the discharge port cylinder (1) are fixed by screws (4) penetrating the fixing plates (2) and screwing them into the threaded fixing holes (8).

5. The grid plate structure of the discharge port of a ball mill according to claim 4, characterized in that, The fixed plate (2) and the fixed grate plate (3) are designed to be integrally formed.

6. The grid plate structure of the discharge port of a ball mill according to claim 1, characterized in that, The first sieve holes (31) and the second sieve holes (51) are in a square shape.

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