Bottom discharging device for ball mill

Abstract

The utility model discloses a bottom discharging device for a ball mill, which relates to the technical field of discharging of ball mills and comprises a working table, two groups of bearing seats and a rotary drum are mounted on the working table, a discharging pipe and a feeding pipe are arranged at two ends of the rotary drum and are respectively connected with the two groups of bearing seats, and a ball is placed in the rotary drum. The rotary drum is suitable for being driven by external driving force to rotate, the discharging mechanism is arranged on the rotary drum and located on the side portion of a discharging pipe, the discharging mechanism comprises a discharging pipe, the discharging pipe is communicated with the discharging pipe, the end portion of the discharging pipe is connected with a guiding hopper and a material bearing plate, the discharging pipe is installed in the guiding hopper in a hinged mode, and two elastic parts are arranged on the supporting plate. The two elastic parts are arranged on the two sides in the guide hopper, each elastic part is provided with a fixed end and a movable end, the fixed ends are hinged to the guide hopper, and the movable ends are hinged to the bearing plate. According to the bottom discharging device for the ball mill, the problem that material grinding needs to be stopped during discharging in the rotary drum is solved.

Description

Technical Field

[0001] This utility model relates to the field of ball mill discharge, and in particular to a bottom discharge device for ball mills. Background Art

[0002] Ball mills, also known as ore mills, are key equipment for further pulverizing materials after they have been crushed. This type of ore mill uses a certain number of steel balls as grinding media inside its cylinder. It is commonly used for grinding ores, chemicals, ceramic raw materials, etc.

[0003] In existing technologies, ball mills mainly consist of a rotating drum, a drive unit, and balls (e.g., ...). Figure 1 As shown in the figure, it mainly uses the rotation of the drum to drive the balls or other grinding media to perform grinding operations;

[0004] However, the existing ball mill discharge method usually involves opening a discharge port on the side of the rotating drum. When grinding is completed, the powder inside the rotating drum is taken out by opening the discharge port.

[0005] However, when using a ball mill for material grinding, intermittent discharge is sometimes necessary to prevent excessive material accumulation inside the machine, which would affect the grinding effect. Consequently, the above discharge method requires intermittent cessation of the grinding operation, resulting in reduced grinding efficiency. Therefore, a bottom discharge device for ball mills is needed to solve the above problem. Utility Model Content

[0006] The purpose of this invention is to provide a bottom discharge device for ball mills, which solves the problem of needing to stop grinding materials when discharging materials inside the rotating drum.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a bottom discharge device for a ball mill, comprising a worktable with two sets of bearing seats mounted on the worktable, a rotating cylinder with a discharge pipe and a feed pipe at both ends of the rotating cylinder, the discharge pipe and the feed pipe being connected to the two sets of bearing seats respectively, a ball being placed inside the rotating cylinder, the rotating cylinder being adapted to rotate under external driving force, a discharge mechanism being disposed on the rotating cylinder at the side of the discharge pipe, the discharge mechanism including a discharge pipe connected to the discharge pipe, a guide hopper being connected to the end of the discharge pipe, a receiving plate being hinged to the discharge pipe being hinged to the guide hopper, and two sets of elastic parts being disposed on both sides inside the guide hopper, the elastic parts having a fixed end and a movable end, the fixed end being hinged to the guide hopper, and the movable end being hinged to the receiving plate.

[0008] Preferably, the elastic part includes an outer cylinder and an inner shaft slidably installed inside the outer cylinder, with a spring provided between the bottom of the outer cylinder and the inner shaft.

[0009] Preferably, the guide hopper is fixedly installed at the end of the workbench, and two sets of corresponding arc grooves are opened on the side walls on both sides of the guide hopper. The material receiving plate has protruding ends on both sides, and the protruding ends are located in the arc grooves.

[0010] Preferably, a rubber strip is fixed at the end of the material receiving plate, and the rubber strip is adapted to abut against the inner wall of the guide hopper.

[0011] Preferably, a filter cartridge is connected to the end of the discharge pipe, and the filter cartridge is located inside the discharge pipe.

[0012] Preferably, a drive unit is provided on one side of the rotating drum. The drive unit consists of a servo motor and a transmission unit. The transmission unit includes a first gear mounted on the output end of the servo motor and a second gear meshing with the first gear. The second gear is mounted on the outer wall of the rotating drum.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the centrifugal force of the rotating drum is used to output the powder towards the discharge pipe, and the powder is supported by the support plate. Under the pressure of the powder on the support plate, the support plate rotates and tilts through the cooperation of the elastic part, so as to discharge the powder to the outside of the guide hopper. After the powder on the support plate is completely discharged, the inner shaft is reset under the action of the spring of the elastic part, and the support plate is driven back to its original position. This process is repeated to achieve the purpose of intermittent discharge from the guide hopper and solves the problem of needing to stop grinding the material when discharging the material inside the rotating drum. Attached Figure Description

[0014] Figure 1 This is an overall schematic diagram of a bottom discharge device for a ball mill according to this application;

[0015] Figure 2 for Figure 1 Schematic cross-sectional view of the central discharge device;

[0016] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0017] The following are the labeling elements in the figure:

[0018] 1. Workbench; 11. Bearing seat; 2. Drive unit; 21. Servo motor; 22. First gear; 23. Second gear; 3. Rotary drum; 31. Discharge pipe; 4. Discharge mechanism; 41. Discharge pipe; 411. Filter cartridge; 42. Guide hopper; 421. Arc groove; 44. Support plate; 45. Elastic part; 451. Outer cylinder; 452. Inner shaft. Detailed Implementation

[0019] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0020] like Figure 1-Figure 2 As shown, this application provides a bottom discharge device for a ball mill, including a workbench 1 and a rotating drum 3 disposed on the workbench 1. The two ends of the rotating drum 3 are provided with a discharge pipe 31 and a feed pipe (not shown in the figure). The feed pipe is used to input the material into the rotating drum 3. Two sets of bearing seats 11 are installed on the workbench 1. The discharge pipe 31 and the feed pipe of the rotating drum 3 are respectively connected to the two sets of bearing seats 11, so that the rotating drum 3 is suitable for being driven to rotate by an external driving force. The rotating drum 3 contains balls for grinding the material.

[0021] A drive unit 2 is provided on one side of the rotating drum 3. The drive unit 2 consists of a servo motor 21 and a transmission unit. The transmission unit includes a first gear 22 installed on the output end of the servo motor 21 and a second gear 23 meshing with the first gear 22. The second gear 23 is fixedly installed on the outer wall of the rotating drum 3. The servo motor 21 can drive the first gear 22 to rotate, and with the cooperation of the first gear 22 and the second gear 23, it drives the rotating drum 3 to rotate, so that the balls inside the rotating drum 3 can perform grinding operations on the material to obtain powder.

[0022] When the material inside the rotating drum 3 is finished being ground, the rotating drum 3 continues to rotate. Through the action of centrifugal force, the ground material will move along the inner wall of the rotating drum 3 towards the discharge port and approach the discharge pipe 31.

[0023] The above describes the basic components and operating principle of a ball mill. Since ball mills are existing technology, please refer to existing technologies for details, and we will not go into further detail here.

[0024] A discharge mechanism 4 is provided on the side of the discharge pipe 31 on the rotating drum 3. The discharge mechanism 4 includes a discharge pipe 41 and a guide hopper 42 connected to the discharge pipe 41. The end of the discharge pipe 41 is fixedly connected to the bearing seat 11 near the discharge pipe 31. At the same time, the discharge pipe 31, the discharge pipe 41 and the guide hopper 42 are connected in sequence, so that the powder in the rotating drum 3 can be discharged through the cooperation of the discharge pipe 41 and the guide hopper 42.

[0025] like Figures 2-3As shown, the discharge mechanism 4 also includes a filter cylinder 411 installed at the end of the discharge pipe 31. When the rotating drum 3 rotates to output the powder to the discharge pipe 31, the filter cylinder 411 is adapted to screen and filter the material at the discharge pipe 31 to prevent material particles from mixing into the powder. The filter cylinder 411 is located inside the discharge pipe 41, so that the powder enters the discharge pipe 41.

[0026] Meanwhile, the guide hopper 42 is fixedly installed on the end of the workbench 1, and a material receiving unit is installed inside the guide hopper 42. The material receiving unit includes a material receiving plate 44 hinged inside the guide hopper 42, so that the material receiving plate 44 is adapted to rotate inside the guide hopper 42 and open or close the guide hopper 42. A rubber strip (not shown in the figure) is fixed at the end of the material receiving plate 44. The rubber strip is used to abut against the inner wall of the guide hopper 42 so that the material receiving plate 44 can seal and close the guide hopper 42 through the rubber strip.

[0027] Two sets of corresponding arc grooves 421 are provided on the two side walls of the guide hopper 42, and the two sides of the support plate 44 have protruding ends, and the protruding ends of the support plate 44 are located in the arc grooves 421, thereby limiting the rotation of the support plate 44.

[0028] Two sets of elastic parts 45 are provided below the material support plate 44. The two sets of elastic parts 45 are respectively installed on both sides inside the guide hopper 42. The elastic part 45 consists of an outer cylinder 451, an inner shaft 452 and a spring (not shown in the figure). The end of the outer cylinder 451 is hinged to the side wall of the guide hopper 42, and the end of the inner shaft 452 is hinged to the material support plate 44.

[0029] The inner shaft 452 is slidably installed inside the outer cylinder 451 and is adapted to move inside the outer cylinder 451. The spring is located between the inner shaft 452 and the bottom end of the outer cylinder 451. When the inner shaft 452 is subjected to an external force, the inner shaft 452 retracts into the outer cylinder 451 and squeezes the spring. After the external force on the inner shaft 452 disappears, the inner shaft 452 extends outward from the outer cylinder 451 through the action of the spring, so that the inner shaft 452 returns to its original position.

[0030] When the powder in the discharge pipe 41 is conveyed to the guide hopper 42, the powder falls onto the support plate 44 in the guide hopper 42. At the same time, the continuous accumulation of powder on the support plate 44 applies pressure to the support plate 44, thereby indirectly applying pressure to the elastic part 45 through the support plate 44, causing the inner shaft 452 to contract, which in turn causes the support plate 44 to rotate and open the guide hopper 42.

[0031] Under the action of rotating the material support plate 44, the material support plate 44 tilts, and the material on the material support plate 44 is output to the outside of the guide hopper 42. When the powder on the material support plate 44 is discharged, under the action of the spring of the elastic part 45, the inner shaft 452 is reset and drives the material support plate 44 to return to its original position, so as to close the opening of the guide hopper 42. This process is repeated to achieve the purpose of adaptive rotation of the material support plate 44 and intermittent discharge of material from the guide hopper 42.

[0032] In summary, the centrifugal force of the rotating drum 3 propels the powder towards the discharge pipe 31, where it is supported by the receiving plate 44. Under the pressure of the powder on the receiving plate 44, the elastic part 45 causes the receiving plate 44 to rotate and tilt, discharging the powder towards the outside of the guide hopper 42. After the powder on the receiving plate 44 is completely discharged, the inner shaft 452 resets under the action of the spring in the elastic part 45, causing the receiving plate 44 to return to its original position. This process repeats, achieving intermittent discharge from the guide hopper 42 and solving the problem of needing to stop grinding the material during discharge from the rotating drum 3.

[0033] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A bottom discharge device for a ball mill, comprising: A workbench (1), on which two sets of bearing seats (11) are mounted; A rotating drum (3), wherein both ends of the rotating drum (3) are provided with a discharge pipe (31) and a feed pipe, wherein the discharge pipe (31) and the feed pipe are respectively connected to two groups of the bearing seats (11), a sphere is placed in the rotating drum (3), and the rotating drum (3) is suitable for rotating under the drive of an external driving force; The discharging mechanism (4) is arranged on the rotating drum (3) at the side of the discharging pipe (31), and is characterized in that the discharging mechanism (4) comprises: A discharge pipe (41), the discharge pipe (41) is connected to the discharge pipe (31), and the end of the discharge pipe (41) is connected to a guide hopper (42); A material receiving plate (44), wherein the material discharge pipe (41) is hingedly mounted in the material guide hopper (42); Two groups of elastic parts (45) are arranged on both sides of the guide hopper (42). The elastic parts (45) have a fixed end and a movable end. The fixed end is hinged to the guide hopper (42), and the movable end is hinged to the receiving plate (44).

2. A bottom discharge device for a ball mill according to claim 1, characterized in that: The elastic part (45) comprises an outer cylinder (451) and an inner shaft (452) slidably mounted in the outer cylinder (451), and a spring is arranged between the inner bottom of the outer cylinder (451) and the inner shaft (452).

3. A bottom discharge device for a ball mill according to claim 2, characterized in that: The guide hopper (42) is fixedly mounted on the end of the workbench (1), and two groups of corresponding arc grooves (421) are provided on the side walls on both sides of the guide hopper (42). Both sides of the material receiving plate (44) are provided with extended ends, and the extended ends are located in the arc grooves (421).

4. A bottom discharge device for a ball mill according to claim 3, characterized in that: A rubber strip is fixed at the end of the material receiving plate (44), and the rubber strip is suitable for contacting the inner wall of the material guiding hopper (42).

5. A bottom discharge device for a ball mill according to claim 3, characterized in that: A filter cartridge (411) is connected to the end of the discharge pipe (31), and the filter cartridge (411) is located inside the discharge pipe (41).

6. A bottom discharge device for a ball mill according to claim 1, characterized in that: A driving part (2) is provided on one side of the rotating drum (3), the driving part (2) being composed of a servo motor (21) and a transmission unit, the transmission unit comprising a first gear (22) mounted on the output end of the servo motor (21), and a second gear (23) meshing with the first gear (22), the second gear (23) being mounted on the outer wall of the rotating drum (3).

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