Ball mill for gypsum powder processing and processing method

Abstract

The invention discloses a ball mill for gypsum powder processing and a processing method, and relates to the technical field of gypsum powder grinding, the ball mill comprises a base, the upper surface of the base is fixedly connected with a fixing block, the top of the base is fixedly connected with two limiting plates, a cylinder is rotatably connected between the two limiting plates, and the outer side of the cylinder is fixedly connected with a large gear in a penetrating mode; through the arrangement of the crushing assembly, the natural gypsum ore can be preliminarily crushed before being added into the ball mill, the particle size of the natural gypsum ore can be remarkably reduced, the ore is more easily crushed and ground by a grinding body in the ball mill due to the small particle size, and therefore the grinding efficiency is improved; and meanwhile, the improvement of the grinding efficiency means that more natural gypsum ores can be treated within the same time, and the running time of the barrel can be shortened, so that the energy consumption of the barrel is reduced, the granularity of the natural gypsum ores is reduced, the resistance of the barrel during starting is reduced, and the starting current of the barrel is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of gypsum powder grinding, in particular to a ball mill for gypsum powder processing and a processing method. Background Art

[0002] The existing gypsum powder ball mill directly adds natural gypsum ore into the ball mill for grinding at one time.

[0003] In the process of feeding natural gypsum ore into a ball mill to form gypsum powder, if the natural gypsum ore is poured into the ball mill at one time, the sudden large amount of feeding will cause the motor load to rise sharply, which will cause it to exceed its rated power, thereby increasing the energy loss of the motor during startup. At the same time, large pieces of natural gypsum ore directly enter the ball mill. Due to its large particle size, it is difficult for the steel balls in the inner cavity of the ball mill to crush and grind it to the required fineness in a short time, which will cause the grinding process to take a lot of time, so that the motor needs to work for a long time, further increasing the energy loss. At the same time, the existing gypsum powder ball mill directly piles up the ground gypsum powder in a uniform manner, resulting in impurities in the natural gypsum ore being mixed in it, thereby reducing the quality of the gypsum powder.

[0004] Therefore, a ball mill and a processing method for gypsum powder processing are proposed. Summary of the invention

[0005] The object of the present invention is to provide a ball mill for processing gypsum powder and a processing method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a ball mill for gypsum powder processing, comprising a base, a fixed block is fixedly connected to the upper surface of the base, two limit plates are fixedly connected to the top of the base, a cylinder is rotatably connected between the two limit plates, a large gear is fixedly connected to the outer side of the cylinder, a stepper motor is fixedly connected to the top of the fixed block, a pinion is fixedly connected to the output shaft end of the stepper motor, a rotating column 1 is fixedly connected to the end of the pinion away from the stepper motor, an intermittent feeding assembly is arranged on the top of the base, the intermittent feeding assembly comprises a semi-arc block fixedly connected to the end of the rotating column 1 away from the pinion, a rotating column 2 is rotatably connected to the upper surface of the base, a hemispherical shell is fixedly connected to the top of the rotating column 2, a connecting rod is fixedly connected to the outer side of the semi-arc block, a fixed cylinder is fixedly connected to the end of the connecting rod away from the semi-arc block, four U-shaped grooves are equidistantly arranged on the hemispherical shell, and four inner arc grooves are equidistantly arranged on the hemispherical shell.

[0007] Furthermore, the intermittent unloading component also includes a rotating column three rotatably connected to the upper surface of the base, a synchronous wheel one is installed between the rotating column three and the rotating column two, a conveyor belt one is sleeved between the rotating column three and the synchronous wheel one on the rotating column two, a fixed disc is fixedly connected to the top of the rotating column three, two circular holes are symmetrically provided on the fixed disc, an annular groove is provided on the upper surface of the fixed disc, and a unloading hopper is fixedly connected to the lower surface of the top end of the limiting plate.

[0008] Furthermore, a crushing assembly is arranged on the top of the base, and the crushing assembly comprises a round shell fixedly connected to the upper surface of the top end of the limiting plate, and a first bevel gear is penetrated and rotatably connected to the outer side of the round shell.

[0009] Furthermore, the crushing assembly also includes a conveyor belt 2 which is sleeved between the rotating column 1 and the first bevel gear. A transverse plate is fixedly installed in the inner cavity of the circular shell, and a rotating column 4 is penetrated and rotatably connected on the transverse plate. The top of the rotating column 4 is fixedly connected to the second bevel gear. The interior of the second bevel gear is penetrated and fixedly connected with a connecting column, the top of the connecting column is fixedly connected to a cone, and the top of the base is fixedly connected to an inclined slope.

[0010] Furthermore, a screening assembly is provided on the base, and the screening assembly includes a screening cylinder fixedly connected to one side of the cylinder body, and a plurality of circular holes are opened on the screening cylinder. A first collecting box is fixedly connected to the upper surface of the base, and a second collecting box is fixedly connected to the upper surface of the base.

[0011] Furthermore, the large gear and the small gear mesh with each other, the diameter of the fixed cylinder and the width of the U-shaped groove are matched with each other, and the outer arc surface of the semi-arc circular block is matched with the inner arc groove.

[0012] Furthermore, the bottom of the lower hopper and the inner cavity bottom of the annular groove are in conflict with each other, the two circular holes are connected to the annular groove, the bottom pipe mouth size of the lower hopper and the size of circular hole one are matched with each other, the first bevel gear and the second bevel gear are meshed with each other, the upper and lower centers of the connecting column are not on the same vertical plane, and the circular shell and the lower hopper are connected to each other.

[0013] Furthermore, the plurality of circular holes 2 are arranged in a circular array with the center of the screening cylinder as a reference, the first collecting box is located directly below the plurality of circular holes 2, and the second collecting box is located directly below the side of the screening cylinder away from the cylinder body.

[0014] A gypsum powder processing method comprises the following steps:

[0015] Step 1: First, prepare the natural gypsum ore to be ground, and place a plurality of steel balls in the inner cavity of the cylinder;

[0016] Step 2: Put the natural gypsum ore into the round shell, start the stepper motor at the same time, and perform preliminary crushing of the natural gypsum ore through the operation of the crushing component;

[0017] Step 3: The initially crushed natural gypsum ore is put into the inner cavity of the cylinder in small amounts through the operation of the intermittent component.

[0018] Step 5: The cylinder is rotated by a stepper motor, and the multiple steel balls in the inner cavity of the cylinder will make a circular motion with the cylinder. After the multiple steel balls are brought to a certain height, their own gravity will break away from the inner wall of the cylinder and fall down. At this time, the multiple steel balls continuously hit the broken natural gypsum ore, and the natural gypsum ore initially broken in step 2 is ground into gypsum powder;

[0019] Step 6: The gypsum powder is screened through the operation of the screening component, so that suitable gypsum powder is selected and automatically falls in.

[0020] Furthermore, the steel balls in step three are made of stainless steel, and the gypsum powder that meets the requirements in step six falls into the first collection box, and the gypsum powder that does not meet the requirements falls into the second collection box, and is then poured back into the round shell and ground again by the staff.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The setting of the crushing component can perform preliminary crushing of the natural gypsum ore before it is added to the ball mill, which can significantly reduce the particle size of the natural gypsum ore. The smaller particle size makes it easier for the ore to be crushed and ground by the grinding body in the ball mill, thereby improving the grinding efficiency. At the same time, the improvement in grinding efficiency means that more natural gypsum ore can be processed in the same time, which can reduce the operating time of the cylinder, thereby reducing the energy consumption of the cylinder. At the same time, reducing the particle size of the natural gypsum ore reduces the resistance when the cylinder starts, thereby reducing the starting current of the cylinder.

[0023] The setting of the intermittent feeding component can avoid the situation of pouring excessive natural gypsum ore at one time, thereby avoiding the instantaneous increase of the load of the ball mill, thus avoiding the stepper motor from exceeding its rated power, and ensuring that the stepper motor remains in an efficient working state, reducing unnecessary waste of electricity. At the same time, the intermittent feeding component is set up, and the natural gypsum ore can enter the cylinder at a uniform speed, so that the steel balls and the natural gypsum ore are fully in contact, improving the grinding effect, and also avoiding the need to start the motor again when it is put into production at one time, so that the cylinder always keeps a uniform rotation during the gypsum powder processing, thereby further reducing the power loss of the cylinder.

[0024] The setting of the second circular hole in the screening component can produce gypsum powder with uniform particle size and stable quality, meeting the strict requirements of gypsum powder fineness in different application scenarios, while preventing impurities contained in natural stone ore from entering the lime powder that meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a three-dimensional schematic diagram of the cylinder, large gear and stepping motor structure of the present invention;

[0027] Figure 3 It is a three-dimensional schematic diagram of the structure of the rotating column 2, the hemispherical shell and the connecting rod of the present invention;

[0028] Figure 4 It is a three-dimensional schematic diagram of the intermittent blanking assembly structure of the present invention;

[0029] Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlargement in the middle;

[0030] Figure 6 It is a cross-sectional schematic diagram of the lower hopper structure of the present invention;

[0031] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at B in the middle;

[0032] Figure 8 It is a three-dimensional schematic diagram of the structure of the crushing assembly of the present invention;

[0033] Fig. 9 For the present invention Figure 8 A magnified schematic diagram of the structure at C in the middle;

[0034] Fig.10 It is a cross-sectional schematic diagram of the four structures of the round shell and the rotating column of the present invention;

[0035] Fig.11 It is a schematic cross-sectional view of the cylinder structure of the present invention.

[0036] In the figure:

[0037] 1. Base; 2. Fixed block; 3. Limiting plate; 4. Cylinder; 5. Big gear; 6. Stepper motor; 7. Small gear; 8. Rotating column 1;

[0038] The intermittent unloading assembly includes: 9, a semi-arc block; 10, a rotating column 2; 11, a hemispherical shell; 12, a connecting rod; 13, a fixed cylinder; 14, a U-shaped groove; 15, an inner arc groove; 16, a rotating column 3; 17, a conveyor belt 1; 18, a fixed disc; 19, a round hole 1; 20, an annular groove; 21, a unloading hopper;

[0039] The crushing assembly includes: 22, a round shell; 23, a first bevel gear; 24, a second conveyor belt; 25, a fourth rotating column; 26, a second bevel gear; 261, a connecting column; 27, a cone; 271, an inclined slope;

[0040] The screening component includes: 28, screening cylinder; 29, round hole 2; 30, first collecting box; 31, second collecting box. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figures 1 to 11 , is an embodiment provided by the present invention:

[0043] Embodiment 1:

[0044] A ball mill for processing gypsum powder comprises a base 1, the upper surface of the base 1 is fixedly connected with a fixed block 2, the top of the base 1 is fixedly connected with two limit plates 3, a cylinder 4 is rotatably connected between the two limit plates 3, a plurality of steel balls are placed in the inner cavity of the cylinder 4, which are used to crush the gypsum when rolling with the gypsum, and the inner wall of the cylinder 4 is symmetrically fixedly connected with two grid plates, and the aperture between the grid plates is smaller than the aperture of the steel balls, thereby preventing the steel balls from escaping from the inner cavity of the cylinder 4, a large gear 5 is penetrated and fixedly connected to the outer side of the cylinder 4, a stepping motor 6 is fixedly connected to the top of the fixed block 2, a small gear 7 is fixedly connected to the output shaft end of the stepping motor 6, the large gear 5 and the small gear 7 are meshed with each other, and a rotating column 8 is fixedly connected to the end of the small gear 7 away from the stepping motor 6.

[0045] An intermittent feeding assembly is provided on the top of the base 1, and the intermittent feeding assembly includes a semi-arc block 9 fixedly connected to the end of the rotating column 1 8 away from the pinion 7, the upper surface of the base 1 is rotatably connected to the rotating column 2 10, the top of the rotating column 2 10 is fixedly connected to the hemispherical shell 11, the outer side of the semi-arc block 9 is fixedly connected to a connecting rod 12, and the connecting rod 12 is inclined, and the end of the connecting rod 12 away from the semi-arc block 9 is fixedly connected to a fixed cylinder 13, four U-shaped grooves 14 are equidistantly arranged in an annular manner on the hemispherical shell 11, and the diameter of the fixed cylinder 13 is matched with the width of the U-shaped groove 14, four inner arc grooves 15 are equidistantly arranged in an annular manner on the hemispherical shell 11, and the outer arc surface of the semi-arc block 9 is matched with the inner arc groove 15, and the end of the semi-arc block 9 close to the inner arc groove 15 is semicircular, which is convenient for the rotational movement of the hemispherical shell 11.

[0046] The intermittent unloading component also includes a rotating column three 16 rotatably connected to the upper surface of the base 1, a synchronous wheel one is installed between the rotating column three 16 and the rotating column two 10, a conveyor belt 17 is sleeved between the rotating column three 16 and the synchronous wheel one on the rotating column two 10, a fixed disc 18 is fixedly connected to the top of the rotating column three 16, two circular holes 19 are symmetrically opened on the fixed disc 18, an annular groove 20 is opened on the upper surface of the fixed disc 18, the two circular holes 19 are connected with the annular groove 20, and the openings of the two circular holes 19 are flush with the annular groove 20, a lower hopper 21 is fixedly connected to the lower surface of the top of the limiting plate 3, the bottom of the lower hopper 21 conflicts with the inner cavity bottom of the annular groove 20, and the bottom pipe mouth size of the lower hopper 21 is adapted to the size of the circular holes 19.

[0047] A crushing assembly is arranged on the top of the base 1, and the crushing assembly includes a round shell 22 fixedly connected to the upper surface of the top of the limiting plate 3, the round shell 22 is connected to the lower hopper 21, and the outer side of the round shell 22 is penetrated and rotatably connected to the first bevel gear 23.

[0048] The crushing assembly also includes a conveyor belt 24 sleeved between the rotating column 1 8 and the first bevel gear 23, and synchronous wheels are fixedly installed on the outer sides of the rotating column 1 8 and the first bevel gear 23, and the conveyor belt 24 is transmission-connected to the two synchronous wheels. A transverse plate is fixedly installed in the inner cavity of the circular shell 22, and a rotating column 4 25 is penetrated and rotatably connected on the transverse plate, and a second bevel gear 26 is fixedly connected to the top of the rotating column 4 25. The first bevel gear 23 and the second bevel gear 26 are meshed with each other, and a connecting column 261 is penetrated and fixedly connected inside the second bevel gear 26. The upper and lower centers of the connecting column 261 are not on the same vertical plane, a cone 27 is fixedly connected to the top of the connecting column 261, and an inclined slope 271 is fixedly connected to the top of the base 1.

[0049] A screening assembly is provided on the base 1, and the screening assembly includes a screening cylinder 28 fixedly connected to one side of the cylinder body 4, and a plurality of circular holes 29 are opened on the screening cylinder 28, and the plurality of circular holes 29 are arranged in a circular array with the center of the screening cylinder 28 as a reference. A first collecting box 30 is fixedly connected to the upper surface of the base 1, and the first collecting box 30 is located directly below the plurality of circular holes 29. A second collecting box 31 is fixedly connected to the upper surface of the base 1, and the second collecting box 31 is located directly below the side of the screening cylinder 28 away from the cylinder body 4.

[0050] Embodiment 2:

[0051] A gypsum powder processing method comprises the following steps:

[0052] Step 1: First, prepare the natural gypsum ore to be ground, and place a plurality of steel balls in the inner cavity of the cylinder 4;

[0053] Step 2: Put the natural gypsum ore into the round shell 22, and start the stepper motor 6 at the same time, and perform preliminary crushing of the natural gypsum ore through the operation of the crushing component;

[0054] Step 3: The initially crushed natural gypsum ore is repeatedly put into the inner cavity of the cylinder 4 in small amounts through the operation of the intermittent assembly.

[0055] Step 5: The cylinder 4 is rotated by the stepper motor 6, and the multiple steel balls in the inner cavity of the cylinder 4 will make a circular motion with the cylinder 4. After the multiple steel balls are brought to a certain height, their own gravity will break away from the inner wall of the cylinder 4 and fall down. At this time, the multiple steel balls continuously hit the broken natural gypsum ore, and the natural gypsum ore initially broken in step 2 is ground into gypsum powder;

[0056] Step 6: The gypsum powder is screened through the operation of the screening component, so that suitable gypsum powder is selected and automatically falls in.

[0057] The steel balls in step three are made of stainless steel. The gypsum powder that meets the requirements in step six falls into the first collection box 30, and the gypsum powder that does not meet the requirements falls into the second collection box 31, and then is poured back into the round shell 22 by the staff for re-grinding.

[0058] The above implementation works as follows:

[0059] The initialization steps are as follows:

[0060] The bottom of the lower hopper 21 does not overlap with the circular hole 19.

[0061] The working steps are as follows:

[0062] The working steps of the crushing component are as follows:

[0063] The staff starts the stepper motor 6. After the stepper motor 6 is energized, its output shaft end drives the pinion 7 to rotate clockwise, and the pinion 7 drives the rotating column 1 8 to rotate synchronously, so the rotating column 1 8 drives the synchronous wheel thereon to rotate synchronously, and the synchronous wheel of the rotating column 1 8 is driven by the transmission belt 2 24, thereby driving the synchronous wheel of the first bevel gear 23 to rotate clockwise, and the synchronous wheel of the first bevel gear 23 drives the first bevel gear 23 to rotate clockwise, and the rotation of the first bevel gear 23 drives the second bevel gear 26 meshing therewith to rotate, so the second bevel gear 26 rotates clockwise in the horizontal direction, and the second bevel gear 26 drives the rotating column 4 25 to move synchronously, so that the rotation of the rotating column 4 25 drives the top of the connecting column 261 to perform a circular motion, so the connecting column 261 drives the cone 27 to rotate in a circle with the center of the rotating column 4 25 as a reference. The cone 27 is subjected to the action of its own gravity and continuously falls on the upper surface of the cone 27. At the same time, the natural gypsum ore continuously rolls down along the arc surface of the upper surface of the cone 27 and continuously accumulates in the gap between the cone 27 and the inner cavity of the shell 22. Since the cone 27 moves in a circle with the center of the rotating column 25 as a reference, the outer side of the cone 27 continuously squeezes the natural gypsum ore, so that large pieces of natural gypsum ore are continuously crushed, and the crushed natural gypsum ore continuously falls along the gap between the cone 27 and the inner cavity of the shell 22. After the natural gypsum ore in the inner cavity of the shell 22 is initially crushed, the staff adds natural gypsum ore again to ensure the subsequent operation.

[0064] The setting of the crushing component can perform preliminary crushing of the natural gypsum ore before it is added to the ball mill, which can significantly reduce the particle size of the natural gypsum ore. The smaller particle size makes it easier for the ore to be crushed and ground by the grinding body in the ball mill, thereby improving the grinding efficiency. At the same time, the improvement in grinding efficiency means that more natural gypsum ore can be processed in the same time, and the operating time of the cylinder 4 can be reduced, thereby reducing the energy consumption of the cylinder 4. At the same time, the particle size of the natural gypsum ore is reduced, thereby reducing the resistance when the cylinder 4 is started, thereby reducing the starting current of the cylinder 4.

[0065] The working steps of the intermittent feeding component are as follows:

[0066] As described above, when the crushed natural gypsum ore continuously falls to the bottom of the lower hopper 21 along the gap between the cone 27 and the inner cavity of the round shell 22, and because the output shaft end of the stepper motor 6 drives the pinion 7 to rotate clockwise after being energized, the pinion 7 drives the rotating column 18 to rotate synchronously, and the rotating column 18 drives the semi-arc block 9 to rotate synchronously. At this time, when the outer arc surface of the semi-arc block 9 rotates on the inner arc groove 15, the rotation of the semi-arc block 9 drives the connecting rod 12 to rotate with the center of the semi-arc block 9 as a reference. When the fixed cylinder 13 is in the U-shaped groove 14, the semi-arc block 9 continues to drive the connecting rod 12 and the fixed cylinder 13 to rotate and move to the initial position, so that the fixed cylinder 13 enters the next U-shaped groove 14. When the fixed cylinder 13 is continuously in the U-shaped groove 14, the semi-arc block 9 continues to drive the connecting rod 12 and the fixed cylinder 13 to rotate and move to the initial position, so that the fixed cylinder 13 enters the next U-shaped groove 14. When the fixed cylinder 13 is continuously in the U-shaped groove 14, the semi-arc block 9 continues to drive the connecting rod 12 and the fixed cylinder 13 to rotate and move to the initial position, so that the fixed cylinder 13 enters the next U-shaped groove 14. When the fixed cylinder 13 is continuously in the circular motion, the semi-spherical shell 11 is also intermittently rotating with its own center as the axis, and the semi-spherical shell 11 drives the rotating column 2 10 to move synchronously with the connection between the rotating column 2 10 and the base 1 as the axis. Therefore, the rotating column 2 10 drives the rotating column 3 16 to rotate intermittently through the conveyor belt 1 17. At this time, the rotating column 3 16 rotates intermittently, thereby The three 16 drives the fixed disc 18 to move synchronously, so the annular groove 20 always moves along the bottom of the lower hopper 21. When the circular hole 19 coincides with the bottom of the lower hopper 21, the crushed natural gypsum ore is no longer blocked by the annular groove 20. The crushed natural gypsum ore continues to fall under the action of its gravity and passes through the circular hole 19 and falls to the upper surface of the inclined slope 271. Therefore, the crushed natural gypsum ore enters the inner cavity of the cylinder 4 along the slope of the inclined slope 271 again.

[0067] The intermittent feeding component is set to avoid the situation of pouring too much natural gypsum ore at one time, thereby avoiding the situation that a large amount of gypsum ore is loaded into the ball mill, which increases the load when the ball mill is started, and then increases the energy required for the ball mill to start, which is beneficial to reduce the impact of the starting current, so that the ball mill is running and feeding at a stable speed, thereby avoiding the stepper motor 6 exceeding its rated power, and ensuring that the stepper motor 6 remains in an efficient working state, reducing unnecessary waste of electric energy. At the same time, the intermittent feeding component is set, and the natural gypsum ore can enter the cylinder 4 at a uniform speed, so that the steel balls and the natural gypsum ore are fully in contact, improving the grinding effect, and also avoiding the need to start the motor again when it is put into production once, so that the cylinder 4 always keeps a uniform rotation speed during the gypsum powder processing, thereby further reducing the power loss of the cylinder 4, and the motor can continue to operate under a relatively stable load by feeding materials multiple times in small amounts, avoiding the reduction of motor efficiency due to frequent and large fluctuations in load.

[0068] The working steps of the ball mill are as follows:

[0069] As mentioned above, after the stepper motor 6 is energized, its output shaft end drives the small gear 7 to rotate clockwise, and the small gear 7 drives the large gear 5 meshing with it to rotate counterclockwise, so the large gear 5 drives the cylinder 4 to rotate counterclockwise on the limit plate 3. At this time, the crushed natural gypsum ore enters the inner cavity of the cylinder 4. At the same time, the multiple steel balls in the inner cavity of the cylinder 4 will first make circular motion with the cylinder 4. After the multiple steel balls are brought to a certain height, they will be separated from the inner wall of the cylinder 4 due to their own gravity, and the multiple steel balls will be projected and fall. At this time, the multiple steel balls continuously hit the crushed natural gypsum ore, thereby grinding the crushed natural gypsum ore into gypsum powder.

[0070] The working steps of the screening component are as follows:

[0071] When the gypsum powder in the inner cavity of the cylinder 4 is continuously accumulated and overflows into the screening cylinder 28, accompanied by the continuous uniform rotation of the cylinder 4, when the gypsum powder passes through the screening cylinder 28, the gypsum powder that can pass through the aperture of the second circular hole 29 will fall into the first collecting box 30, and the gypsum powder that cannot fall will fall into the second collecting box 31 through the screening cylinder 28. When the first collecting box 30 and the second collecting box 31 are full, the staff will transfer and properly store the gypsum powder inside the first collecting box 30, and pour the gypsum powder inside the second collecting box 31 into the inner cavity of the round shell 22 to continue to complete the above-mentioned working steps, thereby obtaining gypsum powder that meets the diameter of the second circular hole 29.

[0072] The setting of the circular hole 29 in the screening component can produce gypsum powder with uniform particle size and stable quality, meeting the strict requirements of gypsum powder fineness in different application scenarios, while preventing impurities contained in natural stone ore from entering the lime powder that meets the requirements.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball mill for processing gypsum powder, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected with a fixed block (2), the top of the base (1) is fixedly connected with two limit plates (3), a cylinder (4) is rotatably connected between the two limit plates (3), a large gear (5) is fixedly connected through the outer side of the cylinder (4), a stepping motor (6) is fixedly connected with the top of the fixed block (2), a small gear (7) is fixedly connected to the output shaft end of the stepping motor (6), and a rotating column (8) is fixedly connected to the end of the small gear (7) away from the stepping motor (6), and an intermittent feeding assembly is arranged on the top of the base (1), and the intermittent feeding assembly is fixedly connected to the output shaft end of the stepping motor (6). The blanking assembly comprises a semi-arc circular block (9) fixedly connected to the end of the rotating column (8) away from the pinion (7); the upper surface of the base (1) is rotatably connected to the rotating column (10); the top of the rotating column (10) is fixedly connected to a semi-spherical shell (11); the outer side of the semi-arc circular block (9) is fixedly connected to a connecting rod (12); the end of the connecting rod (12) away from the semi-arc circular block (9) is fixedly connected to a fixed cylinder (13); four U-shaped grooves (14) are equidistantly provided in an annular manner on the semi-spherical shell (11); and four inner arc grooves (15) are equidistantly provided in an annular manner on the semi-spherical shell (11).

2. A ball mill for processing gypsum powder according to claim 1, characterized in that: The intermittent unloading component also includes a rotating column three (16) rotatably connected to the upper surface of the base (1), a synchronous wheel one is installed between the rotating column three (16) and the rotating column two (10), a conveyor belt one (17) is sleeved between the rotating column three (16) and the synchronous wheel one on the rotating column two (10), a fixed disc (18) is fixedly connected to the top of the rotating column three (16), two circular holes one (19) are symmetrically provided on the fixed disc (18), an annular groove (20) is provided on the upper surface of the fixed disc (18), and a unloading hopper (21) is fixedly connected to the lower surface of the top end of the limiting plate (3).

3. A ball mill for processing gypsum powder according to claim 2, characterized in that: A crushing assembly is arranged on the top of the base (1), and the crushing assembly comprises a round shell (22) fixedly connected to the upper surface of the top end of the limiting plate (3), and a first bevel gear (23) is rotatably connected to the outer side of the round shell (22).

4. A ball mill for processing gypsum powder according to claim 3, characterized in that: The crushing assembly also includes a conveyor belt 2 (24) sleeved between the rotating column 1 (8) and the first bevel gear (23); a transverse plate is fixedly installed in the inner cavity of the circular shell (22); and a rotating column 4 (25) is rotatably connected to the transverse plate through penetration; a second bevel gear (26) is fixedly connected to the top of the rotating column 4 (25); a connecting column (261) is rotatably connected to the inside of the second bevel gear (26); a cone (27) is fixedly connected to the top of the connecting column (261); and an inclined slope (271) is fixedly connected to the top of the base (1).

5. A ball mill for processing gypsum powder according to claim 1, characterized in that: A screening assembly is arranged on the base (1), the screening assembly comprising a screening cylinder (28) fixedly connected to one side of the cylinder (4), a plurality of circular holes (29) being provided on the screening cylinder (28), a first collecting box (30) being fixedly connected to the upper surface of the base (1), and a second collecting box (31) being fixedly connected to the upper surface of the base (1).

6. A ball mill for processing gypsum powder according to claim 4, characterized in that: The large gear (5) and the small gear (7) mesh with each other, the diameter of the fixed cylinder (13) and the width of the U-shaped groove (14) are matched with each other, and the outer arc surface of the semi-arc circular block (9) and the inner arc groove (15) are matched with each other.

7. A ball mill for processing gypsum powder according to claim 4, characterized in that: The bottom of the lower hopper (21) and the inner cavity bottom of the annular groove (20) are in contact with each other, the two circular holes (19) are connected to the annular groove (20), the bottom pipe opening size of the lower hopper (21) and the size of the circular hole (19) are mutually adapted, the first bevel gear (23) and the second bevel gear (26) are meshed with each other, the upper and lower centers of the connecting column (261) are not on the same vertical plane, and the circular shell (22) and the lower hopper (21) are connected to each other.

8. A ball mill for processing gypsum powder according to claim 5, characterized in that: The plurality of second circular holes (29) are arranged in a circular array with the center of the screening cylinder (28) as a reference, the first collecting box (30) is located directly below the plurality of second circular holes (29), and the second collecting box (31) is located directly below the side of the screening cylinder (28) away from the cylinder body (4).

9. A method for processing gypsum powder, the method being based on a ball mill for processing gypsum powder according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: First, prepare the natural gypsum ore to be ground, and place a plurality of steel balls in the inner cavity of the cylinder (4); Step 2: Put the natural gypsum ore into the round shell (22), and start the stepper motor (6) at the same time, and perform preliminary crushing of the natural gypsum ore through the operation of the crushing component; Step 3: The initially crushed natural gypsum ore is repeatedly put into the inner cavity of the cylinder (4) in small amounts through the operation of the intermittent assembly. Step 5: The cylinder (4) is rotated by a stepper motor (6), and the plurality of steel balls in the inner cavity of the cylinder (4) perform circular motion together with the cylinder (4). After the plurality of steel balls are brought to a certain height, their own gravity will separate them from the inner wall of the cylinder (4) and fall down. At this time, the plurality of steel balls continuously hit the crushed natural gypsum ore, and the natural gypsum ore preliminarily crushed in step 2 is ground into gypsum powder; Step six: The gypsum powder is screened by the operation of the screening component, so that suitable gypsum powder is selected and automatically falls in.

10. A gypsum powder processing method according to claim 9, characterized in that: The steel balls in step 3 are made of stainless steel. The gypsum powder that meets the requirements in step 6 falls into the first collection box (30), and the gypsum powder that does not meet the requirements falls into the second collection box (31), and is then poured back into the round shell (22) by the staff for re-grinding.

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