Ball charging device for a ball mill and ball mill

Abstract

The present disclosure relates to a ball adding device for a ball mill and the ball mill, the ball adding device comprising: a first support; a second support, which is arranged in a horizontal direction and spaced apart from the first support; a gear, which is rotatably connected to the first support; and a ball adding pipe, an outer wall of the ball adding pipe being at least partially provided with a rack extending in a length direction of the ball adding pipe, the rack being engaged with the gear, wherein the ball adding pipe is movably arranged on the second support, an end of the ball adding pipe close to the second support being lower than an end of the ball adding pipe close to the first support in a height direction, and the gear is capable of driving the ball adding pipe to move relative to the first support, so as to make the end of the ball adding pipe close to the second support telescopically extend into a barrel of the ball mill. In this way, the ball adding pipe is driven to move by the gear, so that the end of the ball adding pipe extends into the barrel of the ball mill when it is needed to add steel balls, and the ball adding pipe is prevented from being damaged by the steel balls or the material existing in the barrel for a long time, so as to improve the service life of the ball adding pipe.

Description

Technical Field

[0001] This disclosure relates to the field of ball mill technology, and more specifically, to a ball feeding device for a ball mill and a ball mill. Background Technology

[0002] Ball mills are primarily used to pulverize and grind already crushed materials into finer particles, and are widely used in production processes in building materials, mining, chemicals, and thermal power. During the grinding process, steel balls are added to the grinding chamber of the mill cylinder to grind the material. Since the steel balls used in ball mills are consumables, they need to be added periodically to maintain the desired particle size and output. Currently, the technology for adding steel balls to the ball mill cylinder involves complex and time-consuming procedures such as shutting down the mill, erecting scaffolding, and hoisting through manholes. This poses a significant safety hazard to surrounding equipment and personnel below the mill. Furthermore, directly adding steel balls at the mill inlet can easily damage inlet components such as the inlet bend and mechanical seal, leading to inlet blockage and leakage, which is detrimental to the stable operation of the ball mill. Utility Model Content

[0003] The purpose of this disclosure is to provide a ball-adding device and a ball mill for a ball mill, in order to solve the problem that the process of adding steel balls in a ductile iron mill is complex and poses safety hazards.

[0004] To achieve the above objectives, this disclosure provides a ball-feeding device for a ball mill, comprising:

[0005] First support;

[0006] The second support is arranged at a horizontal interval from the first support;

[0007] Gear, the gear being rotatably connected to the first bracket; and

[0008] A ball-feeding tube is provided with a rack extending along the length of the outer wall of the ball-feeding tube at least partially. The rack meshes with the gear. The ball-feeding tube is movably mounted on the second support. The end of the ball-feeding tube near the second support is lower in height than the end of the ball-feeding tube near the first support. The gear can drive the ball-feeding tube to move relative to the first support, so that the end of the ball-feeding tube near the second support can be retractably extended into the cylinder of the ball mill.

[0009] Optionally, the top of the first bracket includes two opposing first supports, a rotating shaft is fixedly connected to the gear, the two ends of the rotating shaft are rotatably connected to the two first supports, and the gear is located between the two first supports.

[0010] Optionally, a bearing is also connected between the first support and the rotating shaft.

[0011] Optionally, a crank handle is connected to one end of the rotating shaft.

[0012] Optionally, the length of the rack is 1 / 2 to 1 / 3 of the length of the ball-adding tube.

[0013] Optionally, the second bracket is a telescopic rod, and the ball-filling tube overlaps the top end of the telescopic rod.

[0014] Optionally, a second support is provided at the top of the telescopic rod. The second support has a U-shaped structure, and the ball-filling tube is disposed in the opening of the U-shaped structure.

[0015] Optionally, a reinforcing rod is connected between the first bracket and the second bracket.

[0016] Optionally, the ball-filling tube is made of metal.

[0017] According to another aspect of this disclosure, a ball mill is provided, comprising a cylindrical body having a grinding chamber and the aforementioned ball feeding device for the ball mill, wherein the ball feeding tube extends retractably into the grinding chamber.

[0018] Through the above technical solution, the spaced arrangement of the first and second supports provides stable support for the ball-adding tube, ensuring balance during movement. The meshing of gears with the rack on the outer wall of the ball-adding tube allows the tube to move simply by rotating the gears. This allows one end of the ball-adding tube to extend into the ball mill cylinder only when steel balls are needed, and to extend out when not adding balls. This prevents the ball-adding tube from being damaged by steel balls or materials inside the cylinder during prolonged periods, extending its service life. It also reduces the impact of the ball-adding device on components within the ball mill cylinder, improving the stability of the ball mill operation while ensuring effective ball-adding. Furthermore, no personnel need to approach the cylinder during the entire ball-adding process, allowing ball-adding without stopping the ball mill, reducing operational risks and improving production safety and efficiency. Additionally, the precise transmission through the gear and rack meshing allows for flexible adjustment of the ball-adding tube's insertion depth, ensuring accurate ball placement in the target area and avoiding ball-throwing deviation. Operation is simple and maintenance costs are low. The end of the ball-filling tube closest to the second support is lower, forming an inclined structure. Under the action of gravity, the steel ball can automatically slide into the cylinder without the need for additional force on the steel ball. This can automatically add balls to the cylinder, reducing the risk of blockage while increasing ball-filling efficiency.

[0019] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of a ball mill according to one embodiment of the present disclosure.

[0022] Figure 2 This is a schematic diagram of the connection between a gear and a first support in a ball feeding device for a ball mill according to one embodiment of the present disclosure.

[0023] Explanation of reference numerals in the attached figures

[0024] 100-Cylinder body; 1-First support; 11-First support; 2-Second support; 21-Second support; 3-Gear; 31-Shaft; 311-Handle; 4-Ball tube; 41-Rack; 5-Reinforcing rod; 6-Steel ball. Detailed Implementation

[0025] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0026] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" are defined for the actual arrangement direction of the ball-feeding device used in a ball mill, and directional terms such as "inner" and "outer" are defined for the outline of the corresponding components. The terms "first," "second," etc., are used to distinguish different components and do not imply sequentiality or importance. Furthermore, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements.

[0027] According to one embodiment of this disclosure, such as Figure 1 and Figure 2As shown, a ball-feeding device for a ball mill is provided, including a first support 1, a second support 2, a gear 3, and a ball-feeding tube 4. The second support 2 is horizontally spaced from the first support 1. The gear 3 is rotatably connected to the first support 1. At least partially, a rack 41 extending along the length of the ball-feeding tube 4 is provided on the outer wall of the ball-feeding tube 4, and the rack 41 meshes with the gear 3. The ball-feeding tube 4 is movably mounted on the second support 2, and the end of the ball-feeding tube 4 near the second support 2 is lower in height than the end of the ball-feeding tube 4 near the first support 1. Thus, by rotating the gear 3, the rack 41 can be moved, thereby moving the ball-feeding tube 4 relative to the first support 1, so that the end of the ball-feeding tube 4 near the second support 2 can be retractably extended into the cylinder 100 of the ball mill. It should be noted that the ball-feeding tube 4 can be made of metal, which has a certain strength and reduces the probability of deformation after long-term use. Specifically, it can be made of steel or aluminum, and this disclosure does not limit it.

[0028] Through the above technical solution, the spaced arrangement of the first support 1 and the second support 2 provides stable support for the ball-adding tube 4, ensuring balance during movement. Through the meshing of the gear 3 with the rack 41 on the outer wall of the ball-adding tube 4, only the rotation of the gear 3 is needed to drive the ball-adding tube 4 to move. This allows one end of the ball-adding tube 4 to extend into the ball mill cylinder 100 only when steel balls 6 need to be added, and to extend out of the cylinder 100 when no balls are needed. This prevents the ball-adding tube 4 from being damaged by the steel balls 6 or materials inside the cylinder 100 when it is in the cylinder for extended periods, thus extending its service life. It also reduces the impact of the ball-adding device on the components inside the ball mill cylinder 100, improving the stability of the ball mill operation while ensuring the ball-adding effect. Furthermore, no personnel need to approach the cylinder 100 during the entire ball-adding process, allowing ball-adding without stopping the ball mill, reducing operational risks and improving production safety and efficiency. Furthermore, the precise transmission through the meshing of gear 3 and rack 41 allows for flexible adjustment of the insertion depth of the ball-adding tube 4, ensuring that the steel ball 6 accurately falls into the target area and avoiding throwing deviation. Operation is simple and maintenance costs are low. The end of the ball-adding tube 4 closest to the second support 2 is lower, forming an inclined structure. Under the action of gravity, the steel ball 6 automatically slides into the cylinder 100, automatically adding balls to the cylinder 100 without requiring additional force on the steel ball 6, thus reducing the risk of blockage while improving ball-adding efficiency.

[0029] It should be noted that gear 3 can be manually rotated or driven to move rack 41. For example, gear 3 can be connected via shaft 31, or the ball-adding device can also include a motor. The motor can be fixed to the first bracket 1, with its output shaft connected to gear 3. The motor drives gear 3 to rotate, and this disclosure does not limit this. The length of rack 41 can also be set to 1 / 2 to 1 / 3 of the length of ball-adding tube 4. This ensures that the amount of rack material used is reduced, and ball-adding tube 4 can extend into cylinder 100 when steel balls 6 are needed, and retract to the edge of cylinder 100 or extend out of cylinder 100 when steel balls 6 are not needed. This reduces material costs without affecting the conveying of steel balls 6, and also effectively limits the movement path of ball-adding tube 4, reducing the possibility of collision due to excessive extension of ball-adding tube 4 into cylinder 100. Rack 41 can be set at one end of ball-adding tube 4 near the first bracket 1, or in the middle area of ​​ball-adding tube 4, and this disclosure does not limit this.

[0030] Furthermore, the first support 1 and the second support 2 can be fixed to the ground or a platform or support on the ground. Specifically, the first support 1 and the second support 2 can be placed directly on the ground. When the first support 1 and the second support 2 are rod-shaped structures, they can also be directly inserted into the ground. Alternatively, a flat base can be provided at the bottom of the first support 1 and the second support 2 so that they can be placed directly on the ground. This disclosure does not limit this. One ball-feeding device can correspond to one ball mill cylinder 100. Wheels can also be provided below the first support 1 and the second support 2 to make the ball-feeding device movable, so that one ball-feeding device corresponds to multiple ball mill cylinders 100. This disclosure does not limit this.

[0031] Furthermore, such as Figure 2As shown, the top of the first support 1 may also include two opposing first supports 11. A rotating shaft 31 is fixedly connected to the gear 3, and the two ends of the rotating shaft 31 are rotatably connected to the two first supports 11. The gear 3 is located between the two first supports 11. The two first supports 11 are symmetrically arranged and support the two ends of the rotating shaft 31, so that the rotating shaft 31 is subjected to uniform force, avoiding the problem of uneven load caused by unilateral support, and improving the smoothness of the transmission of the gear 3. Here, the first supports 11 may be respectively provided with a support segment extending towards the ball tube 4. The end of the support segment may be spaced apart from the ball tube 4. When the ball tube 4 is moving normally, the support segment does not contact the ball tube 4. When the ball tube 4 tends to misalign the meshing end of the rack 41 and the gear 3 during the movement of the ball tube 4, that is, when the ball tube 4 deviates, the end of the support segment can contact the ball tube 4 in time to limit the ball tube 4 and prevent the rack 41 and the gear 3 from being completely misaligned and affecting the movement of the ball tube 4. Of course, the gear 3 and rack 41 can also be designed with a certain thickness to provide sufficient support for the ball tube 4 and reduce the probability of the gear 3 and rack 41 appearing. This disclosure does not limit this.

[0032] Furthermore, a bearing can be connected between the first support 11 and the rotating shaft 31. The bearing can prevent the rotating shaft 31 from directly contacting the first support 11, reducing wear and extending the service life of the rotating shaft 31 and the first support 11. The operation is smoother, and the rolling friction characteristics of the bearing make the rotating shaft 31 rotate more smoothly, reducing jamming and ensuring smooth movement of the ball tube 4.

[0033] Additionally, a crank handle 311 can be connected to one end of the rotating shaft 31. The crank handle 311 is located on the outside of the first support 11. By turning the crank handle 311, the gear 3 can be driven to rotate, thereby controlling the ball-filling tube 4 to extend into or out of the cylinder 100 along the extension direction of the rack 41. Here, by driving the gear 3 to rotate through the crank handle 311, the number of rotations of the gear 3 can be controlled by turning the crank handle 311, thereby precisely controlling the displacement of the ball-filling tube 4 to ensure that the ball-filling tube 4 can be moved to the designated position.

[0034] It should be noted that the second support 2 can be a telescopic rod, and the ball-filling tube 4 is attached to the top of the telescopic rod. This allows for adjustment of the angle of the ball-filling tube 4 as the telescopic rod extends and retracts, thereby controlling the movement speed of the steel ball 6 within the tube 4. When the telescopic rod is extended to its highest point, the end of the ball-filling tube 4 near the second support 2 is lower in height than the end near the first support 1, ensuring that the steel ball 6 can still enter the cylinder 100 under gravity. Here, a second support 21 can be provided at the top of the telescopic rod. The second support 21 can be a U-shaped structure, and the ball-filling tube 4 can be placed in the opening of the U-shaped structure, reducing the possibility of the ball-filling tube 4 swaying during movement. Alternatively, a protrusion can be provided at the top of the telescopic rod, and a groove along the length of the ball-filling tube 4 can be formed on its surface to cooperate with the protrusion, thereby reducing the possibility of the ball-filling tube 4 swaying during movement. The length of the groove can also limit the movement path of the ball-filling tube 4; this disclosure does not impose any limitations on this.

[0035] According to one embodiment of this disclosure, such as Figure 1 As shown, a reinforcing rod 5 can be connected between the first support 1 and the second support 2 to improve the strength of the first support 1 and the second support 2. Multiple reinforcing rods 5 can be arranged at intervals in the height direction, and this disclosure does not limit this.

[0036] Based on the above-mentioned solution, this disclosure also provides a ball mill, which includes a cylinder 100 with a grinding chamber and the ball feeding device for the ball mill described above. The ball feeding tube 4 can extend into the grinding chamber, and the second support 2 can be arranged adjacent to the cylinder 100. The ball mill has all the beneficial effects of the ball feeding device for the ball mill described above, which will not be repeated here.

[0037] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0039] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A ball charging device for a ball mill, characterized in that include: First support; The second support is arranged at a horizontal interval from the first support; A gear, which is rotatably connected to the first bracket; and A ball-feeding tube is provided with a rack extending along the length of the outer wall of the ball-feeding tube at least partially. The rack meshes with the gear. The ball-feeding tube is movably mounted on the second support. The end of the ball-feeding tube near the second support is lower in height than the end of the ball-feeding tube near the first support. The gear can drive the ball-feeding tube to move relative to the first support, so that the end of the ball-feeding tube near the second support can be retractably extended into the cylinder of the ball mill.

2. The ball charger for a ball mill according to claim 1, characterized in that, The top of the first bracket includes two opposing first supports. A rotating shaft is fixedly connected to the gear. The two ends of the rotating shaft are rotatably connected to the two first supports. The gear is located between the two first supports.

3. The ball feeding device for a ball mill according to claim 2, characterized in that, A bearing is also connected between the first support and the rotating shaft.

4. The ball charger for a ball mill according to claim 2, characterized in that, One end of the rotating shaft is connected to a crank handle.

5. The ball charging device for a ball mill according to claim 1, characterized in that, The length of the rack is 1 / 2 to 1 / 3 of the length of the ball tube.

6. The ball charger for a ball mill according to claim 1, characterized in that The second support is a telescopic rod, and the ball-filling tube is attached to the top of the telescopic rod.

7. The ball charger for a ball mill according to claim 6, characterized in that The top of the telescopic rod is provided with a second support, which is a U-shaped structure, and the ball-filling tube is disposed in the opening of the U-shaped structure.

8. The ball charger for a ball mill according to claim 1, characterized in that A reinforcing rod connects the first bracket and the second bracket.

9. The ball charger for a ball mill according to claim 1, characterized in that The ball-filling tube is made of metal.

10. A ball mill characterized in that, The invention includes a cylindrical body with a grinding chamber and a ball-feeding device for a ball mill according to any one of claims 1-9, wherein the ball-feeding tube extends retractably into the grinding chamber.

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