A ball mill

Abstract

The present application relates to a ball mill, and provides a ball mill, characterized in that: comprising a horizontally arranged tank body, a ball mill tank arranged in the tank body, a support arranged in the middle of the tank body, a first driving device used to drive the ball mill tank to rotate, a driving plate sleeved on one end of the tank body, a driving rod connected to the end of the driving plate close to the ball mill tank, and a second driving device used to drive the driving plate to rotate; the support is used to support the middle of the ball mill tank, and the driving rod is hinged to the end of the ball mill tank; the driving rod does not coincide with the axis of the driving plate. The ball mill of the present application can make the raw materials fully turn in the ball mill tank through multi-dimensional rotation, thereby improving the grinding efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ball mills, in particular to a ball mill. BACKGROUND

[0002] Phosphate rock refers to the general term of phosphate minerals that can be economically utilized, and is an important chemical mineral raw material. It can be used to produce phosphate fertilizer, and can also be used to manufacture yellow phosphorus, phosphoric acid, phosphides and other phosphates for use in the pharmaceutical, food, match, dye, sugar, ceramic, national defense and other industrial sectors. The application of phosphate rock in industry has a history of more than 100 years.

[0003] The mined phosphate rock needs to be ground into powder after being crushed for subsequent production and processing. The common grinding method is ball milling, which puts the raw material and grinding balls into the tank body together, and then rotates the tank body continuously to make the raw material and grinding balls continuously turn in the tank body. In the turning process, the grinding balls continuously impact the raw material, thereby breaking the large particles of the raw material into finer powder. The phosphate rock contains a certain amount of moisture, even after a certain degree of drying before entering the ball mill, it still contains considerable moisture, so it is easy to cause the raw material to agglomerate during the ball milling process, causing the fine powder raw material and the large particle raw material to separate, which will cause uneven grinding of part of the raw material, prolong the grinding time, etc. Therefore, designing a ball mill that can fully grind not only improves production efficiency, but also improves product quality. SUMMARY

[0004] The purpose of the present application is to provide a ball mill that can fully turn the raw material in the ball mill tank through multi-dimensional rotation, thereby improving the grinding efficiency.

[0005] The embodiment of the present application is realized by the following technical scheme: the ball mill of the present application is characterized by comprising a horizontally arranged tank body, a ball mill tank arranged in the interior of the tank body, a support arranged in the middle part of the interior of the tank body, a first driving device for driving the ball mill tank to rotate, a driving plate sleeved on one end of the tank body, a driving rod connected to one end of the driving plate close to the ball mill tank, and a second driving device for driving the driving plate to rotate; the support is used to support the middle part of the ball mill tank, and the driving rod is hinged to the end part of the ball mill tank; the driving rod does not coincide with the axis of the driving plate.

[0006] Further, the first driving device comprises a first motor and a connecting rod; one end of the connecting rod is connected to the output shaft of the first motor through a first universal joint, and the other end is connected to the end part of the ball mill tank through a second universal joint.

[0007] Further, the inner wall of the tank body is uniformly provided with a plurality of impact devices for impacting the outer wall of the ball mill tank.

[0008] Further, the impact device comprises a sleeve provided on the inner wall of the tank body and having one end open, a top pipe slidingly provided in the sleeve, a partition plate fixedly provided on the top pipe close to one end of the sleeve, an air pressure valve provided on the partition plate, an impact plate slidingly provided in the top pipe, a first spring for connecting the impact plate and the partition plate, a second spring provided between the sleeve and the top pipe, a one-way valve provided on the side wall of the sleeve, a first air vent provided on the impact plate, and a second air vent provided on the sleeve.

[0009] Further, the end of the top pipe away from the sleeve is arc-shaped and matches the outer wall of the ball mill tank.

[0010] Further, the support member comprises a ring-shaped clamping plate provided on the outer wall of the middle part of the ball mill tank, a ring-shaped fixing plate provided between the tank body and the ball mill tank, a ring-shaped clamping groove provided on the inner wall of the fixing plate, and a plurality of elastic members; the clamping plate is slidingly provided in the clamping groove; the elastic members are used to connect the fixing plate and the inner wall of the tank body.

[0011] Further, the second driving device comprises a driven wheel connected to the end of the driving plate away from the tank body, a transmission belt, and a second motor; the transmission belt is used to connect the driven wheel and the output shaft of the second motor; the outer wall of the end of the ball mill tank close to the driving rod is provided with a ball seat, the end of the driving rod close to the ball seat is provided with a ball head, and the ball head is clamped in the ball seat.

[0012] Further, the tank body is internally provided with a pair of ring-shaped rubber sheets; the pair of rubber sheets are respectively provided at the two ends of the tank body; the rubber sheets are used to connect the inner wall of the tank body and the outer wall of the ball mill tank.

[0013] Further, the ball mill tank is provided with a feeding pipe at the end close to the first driving device; the side wall of the end of the ball mill tank close to the feeding pipe is provided with a first discharge port; the first discharge port is provided with a screen, and the outer side of the screen is provided with a first gate.

[0014] Further, the lower side wall of the tank body is provided with a second discharge port, and the second discharge port is provided with a second gate; the second discharge port is directly below the first discharge port.

[0015] The technical scheme of the embodiment of the present application has at least the following advantages and beneficial effects: the ball mill of the present application, in use, first sends the iron phosphate to be ground and the grinding balls into the ball mill tank, then starts the first driving device to drive the ball mill tank to rotate, uses the second driving device to drive the driving plate to rotate, and the driving plate drives the ball mill tank to swing through the driving rod in the process of rotation. Since the driving rod is eccentrically arranged and the support member is arranged in the middle of the ball mill tank as a support, the movement mode of the ball mill tank is: on the premise of rotating around the own axis as the center, the double-cone movement around the center. In this way, the material and the grinding balls can not only move along the circumference of the grinding pipe in the ball mill tank, but also constantly reciprocate along the axis of the grinding pipe. The material can be mixed in the grinding process, and the collision frequency of the grinder can be significantly improved, so that the material and the grinding balls can move more fully in the entire grinding pipe, effectively avoiding the problem of concentration of the material or the grinding balls. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the following will briefly introduce the drawings needed to be used in the embodiment. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0017] Figure 1 The structural schematic diagram of the ball mill provided by the embodiment of the present application is shown in the figure.

[0018] Figure 2 The structural schematic diagram of the inside of the ball mill provided by the embodiment of the present application is shown in the figure.

[0019] Figure 3 The structural schematic diagram of the inside of the tank body provided by the embodiment of the present application is shown in the figure.

[0020] Figure 4 The structural schematic diagram of the inside of the tank body provided by the embodiment of the present application is shown in the figure.

[0021] Figure 5 The structural schematic diagram of the inside of the ball mill provided by the embodiment of the present application is shown in the figure.

[0022] Figure 6 The structural schematic diagram of the driving plate part provided by the embodiment of the present application is shown in the figure.

[0023] Figure 7 The structural schematic diagram of the driving plate part provided by the embodiment of the present application is shown in the figure. Figure 3 The enlarged view of part A in the figure.

[0024] Figure 8 The enlarged view of part B in the figure. Figure 3 The enlarged view of part B in the figure.

[0025] Figure icon: 11 - tank body, 12 - second gate, 21 - ball mill tank, 22 - feed pipe, 23 - screen, 24 - first gate, 25 - clamping plate, 26 - fixed plate, 27 - elastic member, 31 - first motor, 32 - first universal joint, 33 - connecting rod, 34 - second universal joint, 35 - second motor, 36 - transmission belt, 37 - driven wheel, 38 - driving plate, 39 - driving rod, 310 - ball head, 311 - ball seat, 40 - impact device, 41 - sleeve pipe, 42 - top pipe, 43 - partition plate, 44 - air pressure valve, 45 - impact plate, 46 - first spring, 47 - second spring, 48 - one-way valve, 49 - first air vent, 410 - second air vent. DETAILED DESCRIPTION

[0026] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0028] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0030] In the description of the present application, it is also necessary to explain that, unless otherwise explicitly specified and limited, if the terms "arrange", "install", "connect", "connect" appear, they should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] Embodiment

[0032] The following is further illustrated in conjunction with specific embodiments, such as the accompanying Figure 1 -Appendix Figure 8 The ball mill of the embodiment is characterized by comprising a horizontally arranged tank body 11, a ball mill tank 21 arranged inside the tank body 11, a support arranged in the middle of the tank body 11, a first driving device for driving the ball mill tank 21 to rotate, a driving plate 38 sleeved on one end of the tank body 11, a driving rod 39 connected to the driving plate 38 near one end of the ball mill tank 21, and a second driving device for driving the driving plate 38 to rotate; the support is used to support the middle of the ball mill tank 21, and the driving rod 39 is hinged to the end of the ball mill tank 21; the driving rod 39 does not coincide with the axis of the driving plate 38. Specifically, in use, the iron phosphate and the grinding balls to be ground are first sent into the ball mill tank 21, and then the first driving device is started to drive the ball mill tank 21 to rotate, and the second driving device is used to drive the driving plate 38 to rotate, and the driving plate 38 drives the ball mill tank 21 to swing through the driving rod 39 in the process of rotating. Since the driving rod 39 is eccentrically arranged, and the support is arranged in the middle of the ball mill tank 21 as a support, the movement mode of the ball mill tank 21 is: on the premise of rotating around its own axis, it makes a double-cone movement around the center. In this way, the material and the grinding balls can not only move along the circumference of the grinding pipe in the ball mill tank 21, but also constantly move back and forth along the axis of the grinding pipe, which not only constantly mixes the material during grinding, but also significantly increases the collision frequency of the grinder, so that the material and the grinding balls can move more fully in the entire grinding pipe, effectively avoiding the problem of concentration of the material or the grinding balls. It should be noted that the two ball mills can be arranged symmetrically (as shown in Figs. Figure 1 、 2 , 6), so that the driving plate 38 is more balanced in force, rotates more stably, and has less wear on all devices.

[0033] The first driving device in the embodiment comprises a first motor 31 and a connecting rod 33; one end of the connecting rod 33 is connected with the output shaft of the first motor 31 through a first universal joint 32, and the other end is connected with the end of the ball mill jar 21 through a second universal joint 34. Specifically, since the ball mill jar 21 will also produce a swing similar to double-cone movement in the process of driving the ball mill jar 21 to rotate, the connecting rod 33, the first universal joint 32 and the second universal joint 34 are needed to connect the first motor 31 and the ball mill jar 21. It should be noted that since the movement of the ball mill jar 21 is not a complete double-cone shape, the ball mill jar 21 may also produce a certain degree of shaking in the process of impact of the material and the grinding ball on the ball mill jar 21, therefore, the connecting rod 33 can be an extension rod with a certain extension length, so as to cope with the influence of the vibration of the ball mill jar 21.

[0034] The inner wall of the jar body 11 in the embodiment is uniformly provided with a plurality of impact devices 40, which are used to impact the outer wall of the ball mill jar 21. Specifically, the phosphate ore entering the ball mill jar 21 has undergone a certain drying process, but since the ore still has a certain roughness, it cannot completely remove the water therein, so that in the process of grinding, when the grinding ball impacts the phosphate ore particles in the grinding jar, part of the phosphate ore may be attached to the inner wall of the ball mill jar 21, which will not fall off immediately, which will affect the subsequent grinding process to a certain extent, therefore, the impact devices 40 are uniformly arranged in the jar body 11, which can knock off the material adhered to the inner wall of the ball mill jar 21 by continuously impacting the ball mill jar 21 through the impact devices 40.

[0035] The impact device 40 in the embodiment includes a sleeve 41 provided on the inner wall of the tank body 11 and having one end open, a top pipe 42 slidingly provided in the sleeve 41, a partition plate 43 fixedly provided on the top pipe 42 close to one end of the sleeve 41, an air pressure valve 44 provided on the partition plate 43, an impact plate 45 slidingly provided in the top pipe 42, a first spring 46 for connecting the impact plate 45 and the partition plate 43, a second spring 47 provided between the sleeve 41 and the top pipe 42, a one-way valve 48 provided on the side wall of the sleeve 41, a first air vent 49 provided on the impact plate 45, and a second air vent 410 provided on the sleeve 41. The end of the top pipe 42 away from the sleeve 41 is arc-shaped and matches the outer wall of the ball mill tank 21. Specifically, the impact device 40 needs to rely on the movement of the ball mill tank 21 to perform the impact function. Specifically, when the ball mill tank 21 moves in the tank body 11, it will periodically press the impact device 40. When the ball mill tank 21 presses the top pipe 42, the top pipe 42 will be pressed into the sleeve 41, and the gas between the top pipe 42 and the sleeve 41 will be pressed, so that the gas forms high pressure. When the pressure reaches the preset value, the air pressure valve 44 will be opened, the high-pressure gas will rush into the top pipe 42, and the impact plate 45 will be pushed to quickly impact the end of the top pipe 42, and the impact force will be transmitted to the ball mill tank 21 through the end of the top pipe 42, and the ball mill tank 21 will be impacted. Then the gas slowly overflows from the first air vent 49 and the second air vent 410, the second spring 47 pushes the top pipe 42 back to the original position, the first spring 46 pulls the impact plate 45 back to the original position, and the external gas enters the sleeve 41 through the one-way valve 48. In this way, the ball mill tank 21 can be uniformly and periodically impacted. Moreover, since the top pipe 42 is provided between the impact plate 45 and the ball mill tank 21, the impact plate 45 does not directly impact the ball mill tank 21, but transmits the vibration to the ball mill tank 21 through the top pipe 42, so that the ball mill tank 21 will not be damaged even after a long time of impact.

[0036] The support in the embodiment includes a ring-shaped clamping plate 25 provided on the outer wall of the middle part of the ball mill tank 21, a ring-shaped fixed plate 26 provided between the tank body 11 and the ball mill tank 21, a ring-shaped clamping groove provided on the inner wall of the fixed plate 26, and a plurality of elastic members 27. The clamping plate 25 is slidingly provided in the clamping groove. The elastic members 27 are used to connect the fixed plate 26 and the inner wall of the tank body 11. Specifically, the clamping plate 25 rotates with the rotation of the ball mill tank 21, and rotates in the clamping groove of the fixed plate 26. Therefore, during the swinging of the ball mill tank 21, the clamping plate 25 and the fixed plate 26 also swing. However, since the clamping plate 25 and the fixed plate 26 are located in the middle part of the ball mill tank 21, the swinging amplitude is very small. Therefore, the fixed plate 26 and the inner wall of the tank body 11 can be connected by the elastic members 27, and the fixed plate 26 can normally swing through the elastic members 27. The elastic members 27 can be common springs or telescopic rods with supporting force, etc.

[0037] The second driving device in the embodiment comprises a driven wheel 37 connected to the driving plate 38 at the end away from the tank body 11, a transmission belt 36, and a second motor 35; the transmission belt 36 is used to connect the driven wheel 37 and the output shaft of the second motor 35; the ball mill tank 21 is provided with a ball seat 311 on the outer wall of the end close to the driving rod 39, and the driving rod 39 is provided with a ball head 310 at the end close to the ball seat 311, and the ball head 310 is clamped in the ball seat 311. Specifically, the connection mode of the ball head 310 and the ball seat 311 between the driving rod 39 and the ball mill tank 21 can better drive the ball mill tank 21 to swing, and since the ball seat 311 and the ball mill tank 21 are rotating by themselves, bearings need to be added between the ball head 310 and the ball seat 311 for lubrication.

[0038] The tank body 11 in the embodiment is internally provided with a pair of annular rubber sheets; the pair of rubber sheets are respectively arranged at the two ends of the tank body 11; the rubber sheets are used to connect the inner wall of the tank body 11 and the outer wall of the ball mill tank 21. Specifically, the rubber sheets mainly play the following roles: (1) reducing noise, cooperating with the soundproof cotton arranged on the tank body 11, which can well reduce the noise in the ball mill tank 21 to an acceptable level for workers; (2) reducing dust, the fully ground powder during discharging will be discharged through the tank body 11, so the rubber sheets arranged at the ends of the tank body 11 can block dust.

[0039] The ball mill tank 21 in the embodiment is provided with a feeding pipe 22 at the end close to the first driving device; the ball mill tank 21 is provided with a first discharge port on the side wall at the end close to the feeding pipe 22; the first discharge port is provided with a screen 23, and the outer side of the screen 23 is provided with a first gate 24. The tank body 11 is provided with a second discharge port on the lower side wall, and the second discharge port is provided with a second gate 12; the second discharge port is arranged directly below the first discharge port. Specifically, during discharging, the first discharge port can be rotated to the lowest position by the second driving device and then stopped, then the first gate 24 and the second gate 12 are opened, and the ball mill tank 21 is continuously rotated, so that the material is discharged through the screen 23 and the second discharge port.

[0040] In summary, in use, the ball mill of the embodiment first sends the iron phosphate and the grinding balls to be ground into the ball mill tank 21, then starts the first driving device to drive the ball mill tank 21 to rotate, and uses the second driving device to drive the driving plate 38 to rotate, and the driving plate 38 drives the ball mill tank 21 to swing through the driving rod 39 in the process of rotation. Since the driving rod 39 is eccentrically arranged, and the support is arranged in the middle of the ball mill tank 21 as a support, the movement mode of the ball mill tank 21 is: on the premise of rotating around the axis itself as the center, it makes double-cone movement around the center. In this way, the material and the grinding balls can not only move along the circumference of the grinding pipe in the ball mill tank 21, but also constantly reciprocate along the axis of the grinding pipe, which can not only constantly mix the material in the grinding process, but also significantly increase the collision times of the grinder, so that the material and the grinding balls can move more fully in the entire grinding pipe, effectively avoiding the problem of material or grinding ball concentration.

[0041] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ball mill characterized by: The ball mill includes a horizontally arranged tank body (11), a ball mill tank (21) arranged inside the tank body (11), a support arranged at the middle part of the tank body (11) to drive the ball mill tank (21) to rotate, a driving plate (38) sleeved on one end of the tank body (11), a driving rod (39) connected with the driving plate (38) near one end of the ball mill tank (21), and a second driving device to drive the driving plate (38) to rotate; The support is arranged to support the middle part of the ball mill tank (21), and the driving rod (39) is hinged to the end of the ball mill tank (21); the driving rod (39) does not coincide with the axis of the driving plate (38); the inner wall of the tank body (11) is uniformly provided with a plurality of impact devices (40) to impact the outer wall of the ball mill tank (21); the impact device (40) includes a sleeve (41) arranged on the inner wall of the tank body (11) and having an opening at one end, a top pipe (42) slidingly arranged in the sleeve (41), a partition plate (43) fixedly arranged on the top pipe (42) near one end of the sleeve (41), an air pressure valve (44) arranged on the partition plate (43), an impact plate (45) slidingly arranged in the top pipe (42), a first spring (46) connecting the impact plate (45) and the partition plate (43), a second spring (47) arranged between the sleeve (41) and the top pipe (42), a one-way valve (48) arranged on the side wall of the sleeve (41), a first air vent (49) arranged on the impact plate (45), and a second air vent (410) arranged on the sleeve (41); the end of the top pipe (42) away from the sleeve (41) is arc-shaped and matches the outer wall of the ball mill tank (21); The first driving device includes a first motor (31) and a connecting rod (33); one end of the connecting rod (33) is connected with the output shaft of the first motor (31) through a first universal joint (32), and the other end is connected with the end of the ball mill tank (21) through a second universal joint (34); The support includes a ring-shaped clamping plate (25) arranged on the outer wall of the middle part of the ball mill tank (21), a ring-shaped fixed plate (26) arranged between the tank body (11) and the ball mill tank (21), a ring-shaped clamping groove arranged on the inner wall of the fixed plate (26), and a plurality of elastic members (27); the clamping plate (25) is slidingly arranged in the clamping groove; the elastic members (27) are arranged to connect the fixed plate (26) and the inner wall of the tank body (11).

2. A ball mill according to claim 1, characterized in that: The second driving device includes a driven wheel (37) connected with the end of the driving plate (38) away from the tank body (11), a transmission belt (36), and a second motor (35); the transmission belt (36) is arranged to connect the driven wheel (37) and the output shaft of the second motor (35). The ball mill jar (21) is provided with a ball seat (311) on the outer wall of one end of the driving rod (39), and the driving rod (39) is provided with a ball head (310) on one end close to the ball seat (311), and the ball head (310) is clamped in the ball seat (311).

3. The ball mill of claim 1, wherein: The inside of the jar body (11) is provided with a pair of annular rubber sheets; a pair of the rubber sheets are respectively arranged at both ends of the jar body (11). The rubber sheet is used to connect the inner wall of the jar body (11) and the outer wall of the ball mill jar (21).

4. The ball mill of claim 1, wherein: The ball mill jar (21) is provided with a feeding pipe (22) on one end close to the first driving device; the side wall of one end of the ball mill jar (21) close to the feeding pipe (22) is provided with a first discharge port; the first discharge port is provided with a screen (23), and the outer side of the screen (23) is provided with a first gate (24).

5. A ball mill according to claim 4, characterized in that: The lower side wall of the jar body (11) is provided with a second discharge port, and the second discharge port is provided with a second gate (12); the second discharge port is arranged directly below the first discharge port.

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