Powder selecting device of cement grinding mill
By introducing a screening box and rotating rod assembly into the cement mill classifier, the problem of blockage by lumpy materials was solved, enabling smooth operation of the equipment and efficient powder selection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUICHANG HONGSHI CEMENT CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-17
AI Technical Summary
Existing cement mills lack a filtration mechanism for lumpy materials, leading to equipment blockage and affecting operating efficiency.
A cement grinding and classifying device was designed, comprising a screening box, a rotating rod, a pressing component, and a pushing component. By rotating and pressing and pushing the lumpy material, blockage is prevented, while ensuring smooth material passage through the screen.
It effectively prevents large pieces of material from clogging the air classifier body, ensures the material screening rate, and guarantees smooth equipment operation and air classification efficiency.
Smart Images
Figure CN224127825U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cement production technology, and more specifically, to a cement grinding and classifying device. Background Technology
[0002] Closed-circuit grinding systems are one of the most common production processes in the cement industry. Their purpose is to improve the productivity of the grinding system, reduce energy consumption, and increase hourly output. Currently, the common practice in cement mill classifiers is to directly add cement materials into the equipment for classification. However, these materials often contain lumpy components. Since most cement mill classifiers lack a filtration mechanism for lumpy materials, directly feeding such lumpy materials into the classifier can easily lead to equipment blockage, thereby hindering the smooth operation of the cement mill classifier and reducing classification efficiency. Summary of the Invention
[0003] The purpose of this application is to provide a cement mill classifier that can solve the problem that the common practice in the current use of cement mill classifiers is to directly add cement materials into the equipment for classification. However, these materials often contain lumpy components. Since most cement mill classifiers lack a filtration mechanism for lumpy materials, directly feeding such lumpy materials into the classifier can easily lead to equipment blockage, thereby hindering the smooth operation of the cement mill classifier and reducing the classification efficiency.
[0004] This application provides a cement mill classifier, including a classifier body and a screening box. A feed pipe is connected between the bottom of the screening box and the classifier body, and a feed pipe is connected to the top of the screening box. A screening plate is fixedly installed inside the screening box. A rotating rod is rotatably installed inside the screening box via a bearing. A drive assembly for driving the rotating rod to rotate is provided on the screening box. A pressing assembly for dispersing materials and a feeding assembly for moving materials are provided on the rotating rod.
[0005] The drive assembly includes a motor, which is fixedly mounted on the screening box, and the motor drives the rotating rod to rotate via an output shaft.
[0006] The pressing assembly includes a mounting box, a cylinder, and a pressing block. The mounting box is fixedly mounted on the rotating rod, the cylinder is fixedly mounted inside the mounting box, and the pressing block is located between the mounting box and the screening plate. The cylinder drives the pressing block to move up and down.
[0007] The material feeding assembly includes a material feeding plate, which is fixedly mounted on the rotating rod and is in contact with the upper end of the screening plate.
[0008] The feeding plate has a through groove.
[0009] The rotating rod is equipped with a striking component for striking the screening plate.
[0010] The striking assembly includes a striking rod, an elastic element, and a striking block. The rotating rod has a mounting groove, and the striking rod is hinged in the mounting groove. The elastic element is pre-pressed between the mounting groove and the striking rod. The striking block is fixedly disposed at the lower end of the screening plate. The striking rod is located below the screening plate and can strike the striking block.
[0011] The impact blocks are provided in multiple quantities and are evenly distributed at the lower end of the screening plate.
[0012] The upper end of the pressure block is fixedly provided with a protective cylinder, which slides through the mounting box and is sleeved on the cylinder.
[0013] The mounting box is equipped with a slider, and the inner wall of the screening box is provided with an annular groove. The slider is slidably connected to the annular groove.
[0014] The beneficial effects of this utility model are:
[0015] This utility model provides a cement mill classifier. In use, material is fed into the screening box through the feed pipe. Material meeting the particle size requirements passes through the screening plate and continues to fall, entering the classifier body through the discharge pipe for classification. Larger, lumpy materials are retained on the screening plate. Simultaneously, a drive assembly rotates a rotating rod, which in turn rotates a pressing assembly and a pushing assembly. The pushing assembly pushes the material while the pressing assembly crushes and disperses larger pieces. This device, by continuously rotating and crushing the material with the pressing assembly, can both break down and refine large pieces, preventing them from clogging the classifier body, and without affecting the material screening rate. Similarly, the continuously rotating and pushing assembly gathers large pieces for the pressing assembly to crush them, while preventing fine materials from accumulating and clogging the screening plate, thus ensuring smooth material passage. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall front view structure in some embodiments of this application;
[0018] Figure 2 This is a cross-sectional view of the main structure of the screening box in some embodiments of this application;
[0019] Figure 3 This is a top sectional view of the screening box structure in some embodiments of this application;
[0020] Figure 4 This is a bottom sectional view of the screening box structure in some embodiments of this application;
[0021] Figure 5 for Figure 2 A schematic diagram of the enlarged structure.
[0022] The reference numerals in the attached figures are as follows:
[0023] 1. Air classifier body;
[0024] 2. Screening box; 21. Feed pipe; 22. Feed inlet pipe; 23. Screening plate; 24. Rotating rod; 25. Mounting groove; 26. Annular chute;
[0025] 3. Drive components; 31. Motor;
[0026] 4. Pressing assembly; 41. Mounting box; 42. Cylinder; 43. Pressing block; 44. Protective cylinder; 45. Sliding block;
[0027] 5. Material feeding assembly; 51. Material feeding plate; 52. Through slot;
[0028] 6. Striking component; 61. Striking rod; 62. Elastic element; 63. Impact block. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0034] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0035] like Figures 1 to 4 As shown in the figure, this application provides a cement mill classifier, including a classifier body 1 and a screening box 2. A feed pipe 21 is connected between the bottom of the screening box 2 and the classifier body 1, and a feed pipe 22 is connected to the top of the screening box 2. A screening plate 23 is fixedly installed inside the screening box 2. A rotating rod 24 is rotatably installed inside the screening box 2 via a bearing. A drive assembly 3 for driving the rotating rod 24 to rotate is provided on the screening box 2. A pressing assembly 4 for dispersing materials and a pushing assembly 5 for pushing materials are provided on the rotating rod 24.
[0036] In operation, material is fed into the screening box 2 through the feed pipe 22. Material that meets the particle size requirements passes through the screening plate 23 and continues to fall, entering the classifier body 1 through the discharge pipe 21 for classification. Larger lumps are retained on the screening plate 23. Simultaneously, the drive assembly 3 drives the rotating rod 24 to rotate, which in turn drives the pressing assembly 4 and the pushing assembly 5 to rotate. The pushing assembly 5 pushes the material while the pressing assembly 4 crushes the large pieces. By setting the pressing assembly 4, which continuously rotates and crushes the material, the device can both crush and refine large pieces of material, preventing them from clogging the classifier body 1, and without affecting the material screening rate. By setting the pushing assembly 5, which continuously rotates and pushes the material, the device can both gather large pieces of material for the pressing assembly 4 to crush them, and prevent fine materials from accumulating and clogging on the screening plate 23, thus ensuring smooth material screening.
[0037] like Figure 2 As shown, in this embodiment, the drive component 3 includes a motor 31, which is fixedly mounted on the screening box 2, and the motor 31 drives the rotating rod 24 to rotate through the output shaft; in use, the motor 31 is turned on to drive the rotating rod 24 to rotate.
[0038] like Figure 2 and 3 As shown, in this embodiment, the pressing assembly 4 includes a mounting box 41, a cylinder 42, and a pressing block 43. The mounting box 41 is fixedly mounted on the rotating rod 24, the cylinder 42 is fixedly mounted inside the mounting box 41, and the pressing block 43 is located between the mounting box 41 and the screening plate 23. The cylinder 42 drives the pressing block 43 to move up and down.
[0039] When in use, the cylinder 42 is turned on to drive the pressing block 43 to move up and down. The pressing block 43 moves up and down to crush the large pieces of material on the screening plate 23. The mounting box 41 supports and protects the cylinder 42.
[0040] like Figure 2 and 3 As shown, in this embodiment, the feeding assembly 5 includes a feeding plate 51, which is fixedly mounted on the rotating rod 24 and is attached to the upper end of the screening plate 23.
[0041] When in use, the material feeding plate 51 rotates to move and gather large pieces of material on the screening plate 23 to the bottom of the pressing block 43, and scrapes the fine material to speed up the screening process.
[0042] like Figure 2 As shown, in this embodiment, the material feeding plate 51 has a through groove 52. When the material feeding plate 51 rotates, it moves and gathers large pieces of material on the screening plate 23 to the bottom of the pressing block 43, and some small pieces of material pass through the through groove 52, so that the material feeding plate 51 can block large pieces of material without blocking too many small pieces of material, ensuring that the material passes through the screen smoothly.
[0043] like Figure 2 , 4 As shown in Figure 5, in this embodiment, the rotating rod 24 is provided with a striking component 6 for striking the screening plate 23; by setting the striking component 6 that continuously rotates and strikes the screening plate 23, the screening plate 23 can be struck periodically, which can further prevent the screening plate 23 from clogging.
[0044] like Figure 2 , 4 As shown in Figure 5, in this embodiment, the striking assembly 6 includes a striking rod 61, an elastic element 62, and a striking block 63. The rotating rod 24 has a mounting groove 25. The striking rod 61 is hinged in the mounting groove 25. The elastic element 62 is pre-pressed between the mounting groove 25 and the striking rod 61. The striking block 63 is fixedly disposed at the lower end of the screening plate 23. The striking rod 61 is located below the screening plate 23 and can strike the striking block 63.
[0045] In use, the rotating rod 24 drives the striking rod 61 to rotate. When the striking rod 61 rotates to the point of striking the block 63, the striking rod 61 rotates downward and squeezes the elastic element 62. At this time, the elastic element 62 is compressed. Then the rotating rod 24 continues to rotate. After the striking rod 61 rotates past the block 63, the compression on the elastic element 62 is released. Under the elastic force of the elastic element 62, the striking rod 61 rotates upward to reset. Then the rotating rod 24 continues to rotate, and the striking block continues to rotate until the next time it strikes the block 63. The striking block can periodically strike the block 63 during the rotation process to produce a vibration effect. The elastic element 62 is a spring.
[0046] like Figure 2 and 4 As shown, in this embodiment, multiple impact blocks 63 are provided, and the multiple impact blocks 63 are evenly distributed at the lower end of the screening plate 23. The evenly distributed multiple impact blocks 63 can increase the knocking frequency and can transmit the vibration generated by the knocking to multiple positions of the screening plate 23, ensuring the uniformity of the knocking effect and effectively preventing the screening plate 23 from clogging.
[0047] like Figure 2 and 3 As shown, in this embodiment, a protective cylinder 44 is fixedly provided at the upper end of the pressure block 43. The protective cylinder 44 slides through the mounting box 41 and is sleeved on the cylinder 42. The protective cylinder 44 can prevent the material from causing wear to the cylinder 42 and provide a protective effect.
[0048] like Figure 1 As shown, in this embodiment, a slider 45 is fixedly installed on the mounting box 41, and an annular groove 26 is provided on the inner wall of the screening box 2. The slider 45 and the annular groove 26 are connected in a limited sliding connection. The cooperation between the slider 45 and the annular groove 26 makes the rotation of the mounting box 41 more stable and smooth, and improves the stability of use.
[0049] Working principle: When the cement mill classifier provided in this application is in use, the material is fed into the screening box 2 through the feed pipe 22. The material that meets the particle size requirements passes through the screening plate 23 and continues to fall, and enters the classifier body 1 through the discharge pipe 21 for classification. The lumpy material with excessively large particles is intercepted on the screening plate 23. At the same time, the motor 31 is turned on to drive the rotating rod 24 to rotate. The rotating rod 24 drives the mounting box 41 and the material-pushing plate 51 to rotate. When the material-pushing plate 51 rotates, it pushes and gathers the large pieces of material on the screening plate 23 to the bottom of the pressing block 43, and scrapes the fine material to speed up the screening. At the same time, the cylinder 42 is turned on to drive the pressing block 43 to move up and down. The up and down movement of the pressing block 43 crushes the large pieces of material on the screening plate 23.
[0050] The rotating rod 24 simultaneously drives the striking rod 61 to rotate. When the striking rod 61 rotates to the point of striking the block 63, the striking rod 61 rotates downward and squeezes the elastic element 62. At this time, the elastic element 62 is compressed. Then the rotating rod 24 continues to rotate. After the striking rod 61 rotates past the block 63, the compression on the elastic element 62 is released. Under the elastic force of the elastic element 62, the striking rod 61 rotates upward to reset. Then the rotating rod 24 continues to rotate, and the striking block continues to rotate until the next time it strikes the block 63. The striking block can periodically strike the block 63 during the rotation process to produce a vibration effect.
[0051] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A cement mill powder selection device, characterized by: The system includes a classifier body (1) and a screening box (2). A feed pipe (21) is connected between the bottom of the screening box (2) and the classifier body (1). A feed pipe (22) is connected to the top of the screening box (2). A screening plate (23) is fixedly installed inside the screening box (2). A rotating rod (24) is rotatably installed inside the screening box (2) via a bearing. A drive assembly (3) for driving the rotating rod (24) to rotate is installed on the screening box (2). A pressing assembly (4) for dispersing materials and a feeding assembly (5) for moving materials are installed on the rotating rod (24).
2. The cement grinding and classifying device according to claim 1, characterized in that: The drive assembly (3) includes a motor (31), which is fixedly mounted on the screening box (2), and the motor (31) drives the rotating rod (24) to rotate through the output shaft.
3. The cement mill powder selection device according to claim 1, characterized in that: The pressing assembly (4) includes a mounting box (41), a cylinder (42) and a pressing block (43). The mounting box (41) is fixedly mounted on the rotating rod (24). The cylinder (42) is fixedly mounted inside the mounting box (41). The pressing block (43) is located between the mounting box (41) and the screening plate (23). The cylinder (42) drives the pressing block (43) to move up and down.
4. The cement mill powder selection device according to claim 1, characterized in that: The feeding assembly (5) includes a feeding plate (51), which is fixedly mounted on the rotating rod (24) and is in contact with the upper end of the screening plate (23).
5. Cement mill powder selection device according to claim 4, characterized in that The feeding plate (51) has a through groove (52) through it.
6. The cement mill powder selection device according to claim 1, characterized in that: The rotating rod (24) is provided with a striking component (6) for striking the screening plate (23).
7. Cement mill powder selection device according to claim 6, characterized in that The striking assembly (6) includes a striking rod (61), an elastic element (62), and a striking block (63). The rotating rod (24) has a mounting groove (25). The striking rod (61) is hinged in the mounting groove (25). The elastic element (62) is pre-pressed between the mounting groove (25) and the striking rod (61). The striking block (63) is fixedly disposed at the lower end of the screening plate (23). The striking rod (61) is located below the screening plate (23), and the striking rod (61) can strike the striking block (63).
8. Cement mill powder selection device according to claim 7, characterized in that Multiple impact blocks (63) are provided, and the multiple impact blocks (63) are evenly distributed at the lower end of the screening plate (23).
9. The cement mill powder selection device according to claim 3, characterized in that: A protective cylinder (44) is fixedly provided at the upper end of the pressure block (43). The protective cylinder (44) slides through the mounting box (41) and is sleeved on the cylinder (42).
10. The cement mill powder selection device according to claim 3, characterized in that: A slider (45) is fixedly installed on the mounting box (41), and an annular groove (26) is provided on the inner wall of the screening box (2). The slider (45) is slidably connected to the annular groove (26).