Ball mill for grinding stone raw materials

Abstract

The utility model relates to the technical field of ball mills, one embodiment of the utility model provides a ball mill for stone raw material grinding, the ball mill comprises a ball milling barrel and a driving mechanism, the driving mechanism is used for driving the ball milling barrel to rotate, the ball mill further comprises a collecting outer barrel, a filtering mechanism and a discharging assembly, and the collecting outer barrel is rotationally arranged outside the ball milling barrel in a sleeving mode; the filtering mechanism is arranged on the side wall of the ball-milling cylinder and used for outwards filtering and discharging the ground stones which can pass through the aperture of the filtering mechanism into the collecting outer cylinder, and the discharging assembly is arranged on the collecting outer cylinder and used for discharging the ground stones. The technical problems that in the prior art, due to the randomness of the motion trail and the collision mode of steel balls in a ball mill, some stones are collided and ground too many times, some stones are not ground, and secondary machining needs to be conducted are solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of ball mill technology, and more specifically, to a ball mill for grinding stone raw materials. Background Technology

[0002] A ball mill for grinding stone raw materials is a device used to grind and crush stone raw materials. The ball mill consists of a horizontally placed cylinder (referred to as the ball mill cylinder in this embodiment), which contains a certain number of steel balls or other grinding media. When the cylinder rotates through the drive mechanism, the grinding media are lifted to a certain height under the action of centrifugal force and then fall down, crushing and grinding the stone raw materials through impact, compression and grinding.

[0003] When grinding stones inside the grinder, the steel balls inside collide with the stones. Due to the randomness of the movement trajectory and collision method of the steel balls, some stones are collided and ground too many times, while some stones are not collided and ground. Stones that are collided and ground too many times will be over-ground, resulting in uneven particle size after grinding. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a ball mill for grinding stone raw materials, which solves the technical problem in the prior art that due to the randomness of the movement trajectory and collision mode of the steel balls inside the ball mill, some stones are collided and ground too many times, while others are not ground, resulting in uneven particle size.

[0005] According to one aspect, at least one embodiment of this disclosure provides a ball mill for grinding stone raw materials, including a grinding cylinder and a drive mechanism, the drive mechanism being used to drive the grinding cylinder to rotate, and further comprising:

[0006] The outer collecting cylinder is detachably and rotatably sleeved on the outside of the ball mill cylinder;

[0007] A filtration mechanism is provided on the side wall of the ball mill cylinder. The filtration mechanism is used to filter the ground stones that can pass through the aperture of the filtration mechanism and discharge them into the outer collection cylinder.

[0008] A feeding assembly is disposed on the outer collecting cylinder and is used to discharge the polished stones.

[0009] Preferably, the filtration mechanism includes:

[0010] The frame has multiple filter ports on the side wall of the ball mill cylinder, and the frame is connected to one of the filter ports.

[0011] A filter screen, which is detachably connected to the frame by locking bolts;

[0012] The filter box is connected to the other multiple filter ports that are not installed with the frame, and multiple discharge holes are opened on the other side of the filter box. The stones discharged through the discharge holes also fall into the outer collection cylinder.

[0013] Preferably, the drive mechanism includes:

[0014] A support frame on which the ball mill cylinder is rotatably mounted;

[0015] A drive motor is mounted on top of the support frame;

[0016] A drive shaft is coaxially and fixedly connected to the output end of the drive motor, and the ball mill cylinder is fixedly connected to the other end of the drive shaft.

[0017] Preferably, it also includes a support mechanism, the support mechanism comprising:

[0018] A support base, wherein the outer collecting cylinder is fixedly connected to the top of the support base;

[0019] A retaining ring is fixedly connected to one end of the outer collecting cylinder, and the drive shaft passes through the retaining ring and is fixedly connected to the ball mill cylinder.

[0020] Preferably, the feeding assembly includes:

[0021] The discharge port is located on the outer wall of the outer collecting cylinder;

[0022] A stone transfer bin, the stone transfer bin being connected to the discharge port;

[0023] An inclined sliding member is disposed at the bottom of the stone transfer bucket;

[0024] A drive conveyor is disposed on the inclined slider.

[0025] Preferably, the tilting slider includes:

[0026] A drop box, the drop box being connected to the bottom of the stone transfer bucket;

[0027] An inclined plate is fixedly connected to the inner bottom wall of the drop frame.

[0028] Preferably, the drive conveyor includes:

[0029] A rotating motor is mounted on the outer wall of the drop frame;

[0030] A rotating shaft is coaxially and fixedly connected to the output end of the rotating motor.

[0031] A conveying rod, which is coaxially and fixedly connected to the other end of the rotating shaft;

[0032] A spiral conveyor blade, which is fixedly connected to the outer wall of the conveyor rod;

[0033] A delivery pipe, which is connected to the outer wall of the drop frame.

[0034] Furthermore, the highest point of the inclined plate is lower than the lowest point of the rotating shaft.

[0035] Furthermore, the inner wall of the conveying pipe is configured as an arc-shaped surface.

[0036] Furthermore, the inner wall of the outer collecting cylinder near the discharge port is also configured as an arc-shaped surface.

[0037] The beneficial effects of the embodiments disclosed herein are as follows:

[0038] 1. In this disclosure, when using a ball mill to grind stone raw materials, due to the randomness of the movement trajectory and collision mode of the steel balls inside the ball mill, some stones may be ground too many times. The improved device, through the cooperation of the filtering mechanism and the support mechanism, allows the ground stones to fall into the support mechanism and be collected in the outer collection cylinder when the driving mechanism drives the grinding inside the ball mill. This avoids the ground stones from continuing to be ground inside the ball mill for a long time, thus improving the uniformity of the ground stones.

[0039] 2. In this disclosure, since the ball mill needs to open the grinding cylinder and take out the ground stones after grinding the stone raw materials, the processing time will be extended. Compared with the prior art, the improved device can transport the stones outward through the support mechanism and the grinding stone can be transported outward through the drive conveyor, avoiding the need to open the grinding cylinder again to take them out, and can be collected at any time. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0041] Figure 1 This is a schematic diagram of the overall structure of a ball mill for grinding stone raw materials in one embodiment of the present disclosure;

[0042] Figure 2 for Figure 1 A schematic diagram of the structure of the ball mill cylinder, frame, and filter screen in the embodiment;

[0043] Figure 3 for Figure 1 A schematic diagram of the structure of the conveying pipe, the dropping frame, and the stone transfer bucket in the embodiment;

[0044] Figure 4 for Figure 1 A schematic diagram of the structure of the spiral conveyor blade, conveyor rod and rotating motor in the embodiment;

[0045] Figure 5 This is a schematic diagram of the overall structure of a ball mill for grinding stone raw materials from another perspective in one embodiment of this disclosure.

[0046] Figure 6 for Figure 1 A schematic diagram of the structure of the outer cylinder and the discharge port in the embodiment;

[0047] Figure 7 This is a cross-sectional schematic diagram of the overall structure of a ball mill for grinding stone raw materials in one embodiment of this disclosure.

[0048] In the diagram: 1. Grinding cylinder; 2. Frame; 3. Filter screen; 4. Locking bolt; 5. Filter box; 6. Support frame; 7. Drive motor; 8. Drive shaft; 9. Support base; 10. Collecting outer cylinder; 11. Fixing ring; 12. Discharge port; 13. Stone transfer barrel; 14. Drop frame; 15. Inclined plate; 16. Rotating motor; 17. Rotating shaft; 18. Conveying rod; 19. Spiral conveying blade; 20. Conveying pipe; 21. Arc-shaped surface. Detailed Implementation

[0049] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0050] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0051] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0052] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0054] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0055] like Figures 1-7 As shown, a ball mill for grinding stone raw materials according to an embodiment of the present disclosure is illustrated. It includes a ball mill cylinder 1 and a drive mechanism. The drive mechanism is used to drive the ball mill cylinder 1 to rotate. It also includes a collecting outer cylinder 10, a filtering mechanism and a feeding assembly. The collecting outer cylinder 10 is detachably and rotatably sleeved on the outside of the ball mill cylinder 1. The filtering mechanism is set on the side wall of the ball mill cylinder 1. The filtering mechanism is used to filter the ground stones that can pass through the aperture of the filtering mechanism and discharge them to the collecting outer cylinder 10. The feeding assembly is set on the collecting outer cylinder 10 and is used to discharge the ground stones. The inner wall of the collecting outer cylinder 10 near the discharge port 12 is also set as an arc surface. The purpose is to enable the stones to be discharged smoothly to the outside and not to accumulate in the collecting outer cylinder 10.

[0056] When grinding stone raw materials using a ball mill, the worker first places the stones to be ground inside the ball mill cylinder 1 through a filtering mechanism. The filtering mechanism includes a frame 2, a filter screen 3, and a filter box 5. Multiple filter ports are provided on the side wall of the ball mill cylinder 1. The frame 2 is connected to one of these filter ports. The filter screen 3 is detachably connected to the frame 2 by locking bolts 4. The remaining filter ports, where the frame 2 is not installed, are all connected to the filter box 5. Multiple discharge holes are provided on the other side of the filter box 5. The stones discharged through these discharge holes also fall into the outer collecting cylinder 10. Loosening the locking bolts 4 allows the filter screen 3 to be removed. After removing it from frame 2, the worker can place the stones to be ground into the ball mill cylinder 1 and then start the drive mechanism, which includes a support frame 6, a drive motor 7, and a drive shaft 8. The ball mill cylinder 1 is rotatably mounted on the support frame 6, the drive motor 7 is mounted on the top of the support frame 6, the drive shaft 8 is coaxially and fixedly connected to the output end of the drive motor 7, and the ball mill cylinder 1 is fixedly connected to the other end of the drive shaft 8. Start the drive motor 7 to drive the drive shaft 8 to rotate. At this time, the ball mill cylinder 1 will be driven to rotate by the drive shaft 8, and the stones inside the ball mill cylinder 1 will begin to be ground.

[0057] After grinding, the stones fall outward through the filter screen 3 and filter box 5 into the support mechanism, which includes a support base 9 and a fixing ring 11. The outer collecting cylinder 10 is fixedly connected to the top of the support base 9, and the fixing ring 11 is fixedly connected to one end of the outer collecting cylinder 10. The drive shaft 8 passes through the fixing ring 11 and is fixedly connected to the ball mill cylinder 1. The outer collecting cylinder 10 wraps around the outside of the ball mill cylinder 1. Because the ball mill cylinder 1 rotates 360 degrees continuously when driven by the drive motor 7 for grinding, the ball mill cylinder 1 also rotates continuously while being collected by the outer collecting cylinder 10. During rotation, the filter box 5 on the outer wall of the ball mill cylinder 1 also filters the ground stones from all sides. The stones fly outwards. The feeding assembly includes a discharge port 12, a stone transfer barrel 13, an inclined sliding member, and a driving conveyor. The discharge port 12 is located on the outer wall of the collecting outer cylinder 10. The stone transfer barrel 13 is connected to the discharge port 12. The inclined sliding member is located at the bottom of the stone transfer barrel 13, and the driving conveyor is located on the inclined sliding member. At this time, the enclosed collecting outer cylinder 10 can catch the stones flying out from different directions and finally drop them into the stone transfer barrel 13 for outward conveying. The ground stones fall from the filter screen plate 3 and the filter box 5 into the collecting outer cylinder 10 and slide from the discharge port 12 into the stone transfer barrel 13. Then the driving conveyor can be started.

[0058] The inclined sliding component includes a drop frame 14 and an inclined plate 15. The drop frame 14 is connected to the bottom of the stone transfer bucket 13. The inclined plate 15 is fixedly connected to the inner bottom wall of the drop frame 14. The highest point of the inclined plate 15 is lower than the lowest point of the rotating shaft 17 to prevent the rotating motor 16 from colliding with the inclined plate 15 and causing mechanical interference when driving the rotating shaft 17 to rotate. The driving conveying component includes a rotating motor 16, a rotating shaft 17, a conveying rod 18, a spiral conveying blade 19, and a conveying pipe 20. The rotating motor 16 is installed on the outer wall of the drop frame 14. The rotating shaft 17 is coaxially fixedly connected to the output end of the rotating motor 16. The other end of the conveying rod 18 is coaxially connected to the other end of the rotating shaft 17. The shaft is fixedly connected, and the spiral conveyor blade 19 is fixedly connected to the outer wall of the conveyor rod 18. The conveyor pipe 20 is connected to the outer wall of the drop frame 14. The inner wall of the conveyor pipe 20 is set as an arc surface 21 to prevent the conveyed stones from accumulating inside the conveyor pipe 20. When the ground stones fall into the stone transfer bucket 13, they can fall into the drop frame 14 through the stone transfer bucket 13. Finally, they are conveyed outward through the inclined plate 15 on the bottom wall of the drop frame 14. The rotating motor 16 is started, and the rotating shaft 17 is driven to rotate by the rotating motor 16. Then the spiral conveyor blade 19 will convey the collected stones outward through the conveyor pipe 20.

[0059] It should be added that, such as Figure 6 As shown, the outer collecting cylinder 10 is composed of two open cylinders joined together. A sealing ring is detachably connected to the outer wall of the outer collecting cylinder 10 at the joint by locking bolts 4. Before placing the stones to be ground into the ball mill cylinder 1, the locking bolts 4 on the outer wall of the outer collecting cylinder 10 need to be loosened, the sealing ring removed, and half of the outer collecting cylinder 10 removed. At this time, the ball mill cylinder 1 will be in an open state. The filter screen 3 can be removed from the frame 2, and the worker can pour the stone material to be ground into the ball mill cylinder 1 through the open frame 2. Then, the filter screen 3 is installed on the frame 2, the locking bolts 4 are tightened, the outer collecting cylinder 10 is installed back in its original position, the sealing ring is put on the joint, and then the locking bolts 4 are tightened on the sealing ring. The drive motor 7 is started to grind and filter the stones.

[0060] Working Principle: When using a ball mill to grind stone raw materials, the worker first removes the outer collecting cylinder 10, places the stones to be ground inside the ball mill cylinder 1 through the filter screen 3, loosens the locking bolts 4, removes the filter screen 3 from the frame 2, and then places the stones to be ground inside the ball mill cylinder 1. The outer collecting cylinder 10 is then installed on the support base 9, and the drive motor 7 is started, driving the drive shaft 8 to rotate. At this time, the ball mill cylinder 1 will be driven to rotate by the drive shaft 8, and the stones inside the ball mill cylinder 1 will begin to grind. The ground stones will then pass through the filter screen 1. The filter screen 3 and filter box 5 fall into the outer collection cylinder 10 and are eventually conveyed from the discharge port 12 of the outer collection cylinder 10 into the stone transfer bucket 13. The stones in the stone transfer bucket 13 will fall onto the inclined plate 15 in the drop frame 14. The inclined plate 15 will convey the stones into the conveying pipe 20. The rotating motor 16 will be started, and the rotating shaft 17 will be driven to rotate. Then the spiral conveyor blade 19 will convey the collected stones out through the conveying pipe 20. At this time, the ground stones will be conveyed out according to the above process, and the unground stones will continue to be ground in the ball mill cylinder 1.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A ball mill for polishing a stone raw material, comprising a ball mill cylinder (1) and a driving mechanism for driving the ball mill cylinder (1) to rotate, characterized in that, Also include: Collecting outer cylinder (10), the collecting outer cylinder (10) can be detachably rotatingly sleeved on the outside of the ball mill cylinder (1); Filtering mechanism, the filtering mechanism is arranged on the side wall of the ball mill cylinder (1), and the filtering mechanism is used for filtering and discharging the ground stone to the collecting outer cylinder (10) outward through the filtering mechanism aperture; Discharging assembly, the discharging assembly is arranged on the collecting outer cylinder (10), and is used for discharging the polished stone.

2. A ball mill for polishing stone raw material according to claim 1, wherein The filtering mechanism comprises: Frame (2), a plurality of filter openings are formed in the side wall of the ball mill cylinder (1), and the frame (2) is communicated at one of the filter openings; Filtering screen plate (3), the filtering screen plate (3) is detachably connected to the frame (2) through a locking bolt (4); Filter box (5), the filter box (5) is communicated at the remaining plurality of filter openings without the frame (2), and a plurality of discharge holes are formed in the other side of the filter box (5), and the stones discharged through the discharge holes also fall into the collecting outer cylinder (10).

3. A ball mill for polishing stone raw material according to claim 2, characterized in that, The driving mechanism comprises: Support frame (6), the ball mill cylinder (1) is rotatably installed on the support frame (6); Driving motor (7), the driving motor (7) is installed on the top of the support frame (6); Driving shaft (8), the driving shaft (8) is coaxially fixedly connected with the output end of the driving motor (7), and the ball mill cylinder (1) is fixedly connected to the other end of the driving shaft (8).

4. A ball mill for polishing stone raw material according to claim 3, wherein Further comprising a supporting mechanism, the supporting mechanism comprises: Support seat (9), the collecting outer cylinder (10) is fixedly connected to the top of the support seat (9); Fixed ring (11), the fixed ring (11) is fixedly connected to one end of the collecting outer cylinder (10), and the driving shaft (8) passes through the fixed ring (11) and is fixedly connected with the ball mill cylinder (1).

5. A ball mill for polishing stone raw material according to claim 4, wherein The discharging assembly comprises: Discharge port (12), the discharge port (12) is formed in the outer wall of the collecting outer cylinder (10); Stone transfer bucket (13), the stone transfer bucket (13) is communicated at the discharge port (12); Inclined sliding member, the inclined sliding member is arranged at the bottom of the stone transfer bucket (13); Driving conveying member, the driving conveying member is arranged on the inclined sliding member.

6. A ball mill for polishing stone raw material according to claim 5, wherein The inclined sliding member comprises: Drop frame (14), the drop frame (14) is communicated at the bottom of the stone transfer bucket (13); Inclined plate (15), the inclined plate (15) is fixedly connected to the inner bottom wall of the drop frame (14).

7. A ball mill for polishing stone raw material according to claim 6, wherein The driving conveying member comprises: Rotating motor (16), the rotating motor (16) is installed on the outer side wall of the drop frame (14); Rotating shaft (17), the rotating shaft (17) is coaxially fixedly connected with the output end of the rotating motor (16); Conveying rod (18), the conveying rod (18) is coaxially fixedly connected with the other end of the rotating shaft (17); Spiral conveying blade (19), the spiral conveying blade (19) is fixedly connected to the outer wall of the conveying rod (18); A conveying pipe (20) is communicated on the outer side wall of the falling frame (14).

8. A ball mill for polishing stone raw materials according to claim 7, characterized in that, The highest part of the inclined plate (15) is lower than the lowest part of the rotating shaft (17).

9. A ball mill for polishing stone raw material according to claim 8, characterized in that, The inner wall of the conveying pipe (20) is provided as an arc surface (21).

10. A ball mill for polishing stone raw material according to claim 9, wherein The inner wall of the collecting outer cylinder (10) near the discharge port (12) is also provided as an arc surface.

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