Ball mill for the production of proppants

Abstract

The utility model relates to technical fields, concretely relates to a kind of ball mill for preparing fracturing proppant, including base, ball mill main body is rotatably installed on base, the drive device for driving ball mill main body rotation is fixedly connected with base side wall, the fixed connection of ball mill main body discharge end has cylindrical screen, top support head for blocking material is slidably installed in cylindrical screen, and the end of top support head is equipped with push-pull device for driving top support head reciprocating sliding in cylindrical screen.The utility model sets up cylindrical screen and the top support head that can reciprocate sliding in discharge end, effectively blocks the material directly overflowed not fully ground, avoids the waste caused by material leakage.

Description

Technical Field

[0001] This utility model relates to the field of ball mill technology, specifically to a ball mill for preparing fracturing proppant. Background Technology

[0002] Ball mills are crucial equipment for further pulverizing materials after they have been crushed. This type of grinding mill uses a certain number of steel balls as grinding media inside its cylinder. However, during the feeding and unloading process, the material inside the ball mill is prone to leakage due to the mill's rotation, resulting in material waste. A ball mill patent with authorization announcement number CN221085825U in China solves this technical problem. Specifically, this application provides a ball mill including a frame, a ball mill drum, and a drive mechanism. The ball mill drum has a feed shaft and a discharge shaft at its two axial ends, respectively. The feed shaft has a feed channel, and the discharge shaft has a discharge channel. Both the feed shaft and the discharge shaft are rotatably connected to the frame. The drive mechanism is connected to the frame and is used to drive the ball mill drum to rotate. A guide plate is provided in the feed channel, extending spirally along the axial direction of the feed shaft. The guide plate not only guides the material into the ball mill drum but also prevents the material from flowing out of the ball mill drum through the feed channel during grinding.

[0003] As can be seen from the technical solutions proposed in the aforementioned utility model patent documents, the above solutions still have obvious shortcomings. Although the above technical solutions solve the problem of material leakage during feeding, the ball mill using wet grinding has an open discharge structure. When there is too much material in the ball mill, the overflowing material flows directly out of the discharge port, which not only reduces the overall grinding rate of the ball mill, but also makes the material that has not been ground multiple times by the ball mill unusable, resulting in material waste. Therefore, the existing technology urgently needs a technical solution to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a ball mill for preparing fracturing proppant, so as to solve the problems in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution: A ball mill for preparing fracturing proppant includes a base, on which a ball mill body is rotatably mounted. A drive device for driving the ball mill body to rotate is fixedly connected to the side wall of the base. A cylindrical screen is fixedly connected to the discharge end of the ball mill body. A top support head for blocking material is slidably installed inside the cylindrical screen. The end of the top support head is provided with a push-pull device for driving the top support head to slide back and forth inside the cylindrical screen.

[0006] Based on a preferred embodiment of a ball mill for preparing fracturing proppant, the push-pull device includes a support plate fixedly connected to the side wall of a base, a support frame fixedly connected to the support plate, a receiving bevel gear rotatably connected to the side wall of the support frame, a driving bevel gear fixedly connected to the outer end of the cylindrical screen, and the receiving bevel gear meshing with the driving bevel gear, a hinged arm fixedly connected to one side of the receiving bevel gear, a slider slidably mounted on the inner top of the support frame, a connecting rod fixedly connected to one side of the slider, the connecting rod extending into the top support head and fixedly connected to the top support head, and an extension arm rotatably connected to the other side of the slider, and the hinged arm hinged to the extension arm.

[0007] Based on a preferred embodiment of a ball mill for preparing fracturing proppant, a cleaning ring brush is sleeved on the outside of the cylindrical screen, and a drive mechanism for driving the cleaning ring brush to slide back and forth along the axial direction of the cylindrical screen is fixedly installed on the support plate, and the drive mechanism has the same structure as the push-pull device.

[0008] Based on a preferred embodiment of a ball mill for preparing fracturing proppant, the propping head moves in the opposite direction to the cleaning ring brush.

[0009] Based on a preferred embodiment of a ball mill for preparing fracturing proppant, the top support head is provided with an annular brush head for cleaning the cylindrical screen.

[0010] Based on a preferred embodiment of a ball mill for preparing fracturing proppant, when the proppant reaches its maximum stroke, the end of the proppant is located inside the ball mill body.

[0011] Compared with the prior art, this utility model has the following advantages: 1. This utility model effectively prevents insufficiently ground material from overflowing by setting a cylindrical screen and a reciprocating sliding top support head at the discharge end, thus avoiding waste caused by material leakage.

[0012] 2. In this utility model, the top support head actively pushes the substandard material stuck in the screen back to the main body of the ball mill for re-grinding, reducing material retention and ensuring that only qualified material is screened out, thereby improving grinding accuracy and material utilization.

[0013] 3. This utility model adopts an internal and external bidirectional cleaning mechanism to clean the screen mesh in real time during the screening process, avoiding clogging that leads to a decrease in screening efficiency and maintaining the continuous and efficient operation of the equipment. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 for Figure 1 Another perspective of the three-dimensional structure diagram; Figure 3 This is a three-dimensional structural diagram of the back of the present invention; Figure 4 for Figure 2 An enlarged diagram of A in the diagram.

[0017] In the diagram: 1. Base; 2. Ball mill body; 3. Drive unit; 4. Cylindrical screen; 5. Top support head; 6. Support plate; 7. Support frame; 8. Receiving bevel gear; 9. Drive bevel gear; 10. Hinge arm; 11. Slider; 12. Connecting rod; 13. Extension arm; 14. Cleaning ring brush; 15. Drive mechanism. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Example like Figures 1 to 4As shown, this utility model provides a ball mill for preparing fracturing proppant, including a base 1, a ball mill body 2 rotatably mounted on the base 1, a drive device 3 for driving the ball mill body 2 to rotate fixedly connected to the side wall of the base 1, a cylindrical screen 4 fixedly connected to the discharge end of the ball mill body 2, a top support head 5 for blocking materials slidably installed inside the cylindrical screen 4, and a push-pull device for driving the top support head 5 to reciprocate within the cylindrical screen 4 at its end.

[0021] Furthermore, the push-pull device includes a support plate 6 fixedly connected to the side wall of the base 1, a support frame 7 fixedly connected to the support plate 6, a receiving bevel tooth 8 rotatably connected to the side wall of the support frame 7, a driving bevel tooth 9 fixedly connected to the outer side of the end of the cylindrical screen 4, and the receiving bevel tooth 8 meshes with the driving bevel tooth 9, a hinge arm 10 fixedly connected to one side of the receiving bevel tooth 8, a slider 11 slidably installed on the inner side of the top of the support frame 7, a connecting rod 12 fixedly connected to one side of the slider 11, the connecting rod 12 extending into the top support head 5 and fixedly connected to the top support head 5, and an extension arm 13 rotatably connected to the other side of the slider 11, and the hinge arm 10 is hinged to the extension arm 13.

[0022] Furthermore, a cleaning ring brush 14 is sleeved on the outside of the cylindrical screen 4, and a drive mechanism 15 is fixedly installed on the support plate 6 to drive the cleaning ring brush 14 to slide back and forth along the axial direction of the cylindrical screen 4. The drive mechanism 15 has the same structure as the push-pull device.

[0023] Furthermore, the top support head 5 and the cleaning ring brush 14 are set in completely opposite directions.

[0024] Furthermore, the top support head 5 is provided with an annular brush head for cleaning the cylindrical screen 4.

[0025] Furthermore, when the top support head 5 reaches its maximum stroke, the end of the top support head 5 is located inside the ball mill body 2.

[0026] As a further explanation of this embodiment, the fracturing proppant in this embodiment is ceramic particles made from bauxite, shale, and other main raw materials through high-temperature sintering. Before preparation, the main raw materials such as bauxite and shale need to be pulverized to the appropriate mesh size using a ball mill. This helps to reduce the sintering activation energy and densification temperature in the subsequent mixing and sintering process, making it easier to achieve molecular-level dispersion of multiple components during mixing and avoiding partial component segregation after sintering. Therefore, it is essential to ensure that the raw materials reach the appropriate mesh size before use when pulverizing them using a ball mill.

[0027] This invention addresses the above-mentioned issues by improving the discharge port of the ball mill, ensuring that the material reaches a preset mesh size before discharge, thus improving the grinding precision of the material. The working principle of this invention is as follows: Material is poured into the feed port of the ball mill body 2. Inside the ball mill body 2, the material is repeatedly crushed and pulverized by multiple steel balls. A spiral device installed inside the ball mill body 2 then sends the material out through the discharge port of the ball mill body 2. The material flows from the discharge port of the ball mill body 2 into the cylindrical screen 4. Qualified material flows out through the gaps in the cylindrical screen 4 and is collected and processed uniformly, while substandard material is blocked by the cylindrical screen 4 and temporarily retained inside the cylindrical screen 4.

[0028] Since the cylindrical screen 4 is fixedly connected to the ball mill body 2, the ball mill body 2 drives the cylindrical screen 4 to rotate synchronously when it rotates. The drive bevel teeth 9 fixedly sleeved on the outside of the cylindrical screen 4 meshes with the receiving bevel teeth 8, thereby driving the push-pull device to drive the top support head 5 to slide back and forth inside the cylindrical screen 4. During the back and forth sliding of the top support head 5 inside the cylindrical screen 4, the material that does not meet the standard inside the cylindrical screen 4 is pushed back into the ball mill body 2 for re-grinding, so as to avoid the material remaining in the cylindrical screen 4 and reducing the screening efficiency of the cylindrical screen 4. Meanwhile, a cleaning ring brush 14 is fitted around the outside of the cylindrical screen 4. As the cylindrical screen 4 rotates, the cleaning ring brush 14 rubs and cleans the material trapped inside the cylindrical screen 4, preventing the material from clogging the screen holes. Similarly, the cleaning ring brush 14 cleans from the outside of the cylindrical screen 4, while the ring brush head fitted around the outside of the top support head 5 cleans from the inside of the cylindrical screen 4. The two work together to keep the screening efficiency of the cylindrical screen 4 at its best at all times.

[0029] In addition, since the push-pull device and the drive mechanism 15 are respectively located on both sides of the drive bevel gear 9 and are both engaged with the drive bevel gear 9, when the drive bevel gear 9 drives the push-pull device and the drive mechanism 15 to rotate, their rotation directions are completely opposite, so that the running directions of the cleaning ring brush 14 and the top support head 5 are completely opposite. When the cleaning ring brush 14 and the annular brush head outside the top support head 5 intersect, they rub against each other and clean the material stuck inside.

[0030] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the present utility model, and are not intended to limit the implementation methods of the present utility model in any way. Any person skilled in the art can make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in the present utility model, but these should still be regarded as the same technology or embodiment as the present utility model.

[0031] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A ball mill for preparing fracturing proppant, comprising a base (1), characterized in that, The ball mill body (2) is rotatably mounted on the base (1). A drive device (3) for driving the ball mill body (2) to rotate is fixedly connected to the side wall of the base (1). A cylindrical screen (4) is fixedly connected to the discharge end of the ball mill body (2). A top support head (5) for blocking materials is slidably installed inside the cylindrical screen (4). The end of the top support head (5) is provided with a push-pull device for driving the top support head (5) to slide back and forth inside the cylindrical screen (4).

2. The ball mill for preparing fracturing proppant according to claim 1, characterized in that, The push-pull device includes a support plate (6) fixedly connected to the side wall of the base (1), a support frame (7) fixedly connected to the support plate (6), a receiving bevel tooth (8) rotatably connected to the side wall of the support frame (7), a driving bevel tooth (9) fixedly connected to the outer side of the end of the cylindrical screen (4), and the receiving bevel tooth (8) meshes with the driving bevel tooth (9). A hinge arm (10) is fixedly connected to one side of the receiving bevel tooth (8), a slider (11) is slidably installed on the inner side of the top of the support frame (7), a connecting rod (12) is fixedly connected to one side of the slider (11), the connecting rod (12) extends into the top support head (5) and is fixedly connected to the top support head (5), and an extension arm (13) is rotatably connected to the other side of the slider (11), and the hinge arm (10) is hinged to the extension arm (13).

3. The ball mill for preparing fracturing proppant according to claim 2, characterized in that, The cylindrical screen (4) is fitted with a cleaning ring brush (14), and a drive mechanism (15) for driving the cleaning ring brush (14) to slide back and forth along the axial direction of the cylindrical screen (4) is fixedly installed on the support plate (6), and the drive mechanism (15) has the same structure as the push-pull device.

4. The ball mill for preparing fracturing proppant according to claim 3, characterized in that, The top support head (5) moves in the opposite direction to the cleaning ring brush (14).

5. The ball mill for preparing fracturing proppant according to claim 1, characterized in that, The top support head (5) is provided with an annular brush head for cleaning the cylindrical screen (4).

6. The ball mill for preparing fracturing proppant according to claim 1, characterized in that, When the top support head (5) reaches its maximum stroke, the end of the top support head (5) is located inside the ball mill body (2).

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