A cement grinding device
By designing a main grinding box and an auxiliary grinding box, combined with a screen and multi-stage grinding components, the problem of multiple operations required for cement grinding is solved, achieving efficient and uniform cement pulverization, and improving the grinding efficiency and product quality of cement powder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN NUWA BUILDING MATERIALS CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-07-10
Smart Images
Figure CN224475096U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cement production technology, and more specifically, to a cement grinding apparatus. Background Technology
[0002] Cement grinding is the final and most energy-intensive step in cement manufacturing. Its main function is to grind cement clinker (as well as retarders, performance modifiers, etc.) to a suitable particle size (expressed by fineness, specific surface area, etc.), forming a certain particle size distribution, increasing its hydration surface area, accelerating the hydration rate, and meeting the requirements for cement paste setting and hardening. Currently, cement grinding operations usually require multiple grinding processes. Specifically, after each grinding cycle, the material must be collected and then put back into the grinding equipment for the next grinding cycle. This process is repeated multiple times to achieve the required particle size. This process is extremely time-consuming and cannot achieve one-time grinding. Summary of the Invention
[0003] The purpose of this application is to provide a cement grinding device that can solve the technical problem that current cement grinding operations often require multiple grinding processes, that is, after grinding once, the material is collected and put back into the device for repeated operation until the required particle size is achieved. This process is time-consuming and cannot be completed in one go.
[0004] This application provides a cement grinding device, including a main grinding box and an auxiliary grinding box. Screens are provided inside both the main grinding box and the auxiliary grinding box. A second grinding component is positioned above the screens. A first grinding component is also provided inside the main grinding box, positioned above the second grinding component. Through holes are provided on the sides of both the main grinding box and the auxiliary grinding box, positioned above the screens.
[0005] The second grinding assembly includes a motor, a mounting block, and a grinding block. The mounting block is rotatably disposed on the upper end of the screen, the motor is fixedly disposed on the lower end of the screen, and the output shaft of the motor is connected to the mounting block. The grinding block is fixedly disposed on the mounting block, and a gap is provided between the grinding block and the screen.
[0006] The first grinding assembly includes two symmetrically arranged grinding rollers, which are rotatably mounted in the main grinding box via bearings.
[0007] A material-pushing rod is fixedly installed on the mounting block inside the main grinding box, and the material-pushing rod and the through hole are at the same horizontal height.
[0008] The motor is provided with a protective shell.
[0009] The top of the mounting block is tapered.
[0010] The main grinding box is connected to a feed hopper at the top, and the main grinding box and the auxiliary grinding box are both connected to discharge pipes at the bottom.
[0011] Both the main grinding box and the auxiliary grinding box are equipped with observation windows.
[0012] Both the lower end of the main grinding box and the lower end of the auxiliary grinding box are equipped with support legs.
[0013] The beneficial effects of this utility model are:
[0014] This utility model provides a cement grinding device. In use, cement material is added to the main grinding chamber. The first grinding component performs preliminary grinding on the material, which then falls onto the screen of the main grinding chamber. Material with the required particle size passes through the screen and continues to fall. The second grinding component of the main grinding chamber performs secondary grinding on the larger particles until all material meets the particle size requirements. When there is too much large particle material causing accumulation on the screen of the main grinding chamber, some material will pass through the through holes and fall onto the screen of the auxiliary grinding chamber. The second grinding component of the auxiliary grinding chamber... This device performs secondary grinding of large-particle materials until all materials meet the particle size requirements. By incorporating a screen, the grinding operation can be completed with a single feeding. The two-stage grinding process, using a first and second grinding assembly, improves grinding efficiency and ensures more thorough grinding, resulting in more uniform cement products with suitable particle sizes. Furthermore, the auxiliary grinding box distributes the grinding pressure from the main grinding box, preventing excessive accumulation of large-particle materials on the main grinding box's screen and further enhancing grinding efficiency. Attached Figure Description
[0015] 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.
[0016] Figure 1 This is a sectional view of the overall main view structure in some embodiments of this application;
[0017] Figure 2 This is a schematic diagram of the top view of the screen structure in some embodiments of this application.
[0018] The reference numerals in the attached figures are as follows:
[0019] 1. Main grinding box; 11. Through hole; 12. Feed hopper; 13. Discharge pipe; 14. Support leg;
[0020] 2. Secondary grinding box;
[0021] 3. Screen;
[0022] 4. Second grinding assembly; 41. Motor; 42. Mounting block; 43. Grinding block; 44. Feeding rod; 45. Protective shell;
[0023] 5. First grinding assembly; 51. Grinding roller. Detailed Implementation
[0024] 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.
[0025] 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.
[0026] 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.
[0027] 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.
[0028] 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.
[0029] 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.
[0030] like Figure 1 As shown in the figure, this application provides a cement grinding device, including a main grinding box 1 and an auxiliary grinding box 2. A screen 3 is provided in both the main grinding box 1 and the auxiliary grinding box 2. A second grinding component 4 is provided above the screen 3. A first grinding component 5 is also provided in the main grinding box 1. The first grinding component 5 is located above the second grinding component 4. A through hole 11 is provided on the side of both the main grinding box 1 and the side of the auxiliary grinding box 2. The through hole 11 is located above the screen 3.
[0031] In use, cement material is added to the main grinding box 1. The first grinding component 5 performs preliminary grinding on the material, which then falls onto the screen 3 of the main grinding box 1. Material with the required particle size passes through the screen 3 and continues to fall. The second grinding component 4 of the main grinding box 1 performs secondary grinding on the large-particle material until all material meets the particle size requirements. When there is too much large-particle material and it causes the screen 3 of the main grinding box 1 to accumulate, some material will pass through the through hole 11 and fall onto the screen 3 of the auxiliary grinding box 2. The second grinding component 4 of the auxiliary grinding box 2 performs secondary grinding on the large-particle material until all material meets the particle size requirements.
[0032] This device can complete the grinding operation with a single feeding by setting up a screen 3. By setting up a first grinding component 5 and a second grinding component 4, the material is ground in two stages, which can improve the grinding efficiency and make the material more fully ground, which helps to obtain a more uniform cement product with a more suitable particle size. By setting up an auxiliary grinding box 2, the grinding pressure of the main grinding box 1 can be distributed, preventing the accumulation of large particles on the screen 3 of the main grinding box 1, thus improving the grinding efficiency.
[0033] like Figure 1 and 2 As shown, in this embodiment, the second grinding assembly 4 includes a motor 41, a mounting block 42, and a grinding block 43. The mounting block 42 is rotatably disposed on the upper end of the screen 3, the motor 41 is fixedly disposed on the lower end of the screen 3, and the output shaft of the motor 41 is connected to the mounting block 42. The grinding block 43 is fixedly disposed on the mounting block 42, and a gap is provided between the grinding block 43 and the screen 3.
[0034] When in use, the motor 41 is turned on to drive the mounting block 42 to rotate, and the grinding block 43 rotates together with the mounting block 42. The grinding block 43 crushes and grinds the material on the screen 3.
[0035] like Figure 1 As shown, in this embodiment, the first grinding assembly 5 includes two symmetrically arranged grinding rollers 51, which are rotatably mounted in the main grinding box 1 via bearings. In use, the grinding rollers 51 are rotated by an external motor, and the two grinding rollers 51 work together to crush and grind the material.
[0036] like Figure 1 and 2 As shown in this embodiment, a material-pushing rod 44 is fixedly installed on the mounting block 42 inside the main grinding box 1. The material-pushing rod 44 and the through hole 11 are at the same horizontal height. When too much large-particle material causes the screen 3 of the main grinding box 1 to accumulate, the material-pushing rod 44 rotates together with the mounting block 42, which can help push the large-particle material to the through hole 11, ensuring the smooth flow of material between the main grinding box 1 and the auxiliary grinding box 2. The accumulated large-particle material can be guided to the auxiliary grinding box 2 for supplementary grinding in time, thereby improving the grinding efficiency.
[0037] like Figure 1 As shown, in this embodiment, a protective shell 45 is provided on the outside of the motor 41; the protective shell 45 can prevent materials from entering the motor 41 and extend the service life of the motor 41.
[0038] like Figure 1 As shown, in this embodiment, the top of the mounting block 42 is tapered; the tapered shape of the mounting block 42 helps to reduce the accumulation of material at the top of the mounting block 42.
[0039] like Figure 1 As shown, in this embodiment, a feed hopper 12 is connected to the top of the main grinding box 1, and discharge pipes 13 are connected to the bottom of both the main grinding box 1 and the auxiliary grinding box 2. The feed hopper 12 facilitates the feeding of materials into the main grinding box 1. After grinding, materials that meet the particle size requirements will be discharged from the discharge pipes 13 of the main grinding box 1 and the auxiliary grinding box 2 respectively, which is convenient for collection and subsequent processing.
[0040] In this embodiment, observation windows are provided on both the main grinding box 1 and the auxiliary grinding box 2. The observation windows facilitate the operator's monitoring of the grinding process, enabling timely detection of equipment malfunctions, material blockages, and other problems. This avoids production accidents and equipment damage caused by untimely problem detection and helps the operator adjust grinding parameters according to the actual situation, thereby improving grinding efficiency and product quality.
[0041] In this embodiment, support legs 14 are provided at the lower ends of the main grinding box 1 and the auxiliary grinding box 2; the support legs 14 provide stable support for the main grinding box 1 and the auxiliary grinding box 2, ensuring the stability of the device operation.
[0042] Working principle: When the cement grinding device provided in this application is in use, cement material is added to the main grinding box 1 from the feed hopper 12. The grinding roller 51 is rotated by an external motor. The two grinding rollers 51 work together to perform preliminary grinding on the material. The material then falls onto the screen 3 of the main grinding box 1. Material with the required particle size passes through the screen 3 and continues to fall, and is then discharged from the discharge pipe 13. The motor 41 is turned on to drive the mounting block 42 to rotate. The grinding block 43 rotates with the mounting block 42. The grinding block 43 performs secondary grinding on the large particles on the screen 3 until all the material meets the particle size requirements. When there is too much large particle material and the screen 3 of the main grinding box 1 is piled up, the feeding rod 44 rotates with the mounting block 42 to help push the large particles toward the through hole 11. Some of the material will pass through the through hole 11 and fall onto the screen 3 of the auxiliary grinding box 2. The second grinding component 4 of the auxiliary grinding box 2 performs secondary grinding on the large particles until all the material meets the particle size requirements.
[0043] 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 grinding device, characterized in that: The equipment includes a main grinding box (1) and a secondary grinding box (2). Both the main grinding box (1) and the secondary grinding box (2) are equipped with screens (3). A second grinding assembly (4) is arranged above the screens (3). The main grinding box (1) is also equipped with a first grinding assembly (5). The first grinding assembly (5) is located above the second grinding assembly (4). Both the side of the main grinding box (1) and the side of the secondary grinding box (2) are provided with interconnected through holes (11). The through holes (11) are located above the screens (3).
2. The cement grinding apparatus according to claim 1, characterized in that: The second grinding assembly (4) includes a motor (41), a mounting block (42), and a grinding block (43). The mounting block (42) is rotatably disposed on the upper end of the screen (3). The motor (41) is fixedly disposed on the lower end of the screen (3), and the output shaft of the motor (41) is connected to the mounting block (42). The grinding block (43) is fixedly disposed on the mounting block (42), and a gap is provided between the grinding block (43) and the screen (3).
3. The cement grinding apparatus according to claim 1, characterized in that: The first grinding assembly (5) includes two symmetrically arranged grinding rollers (51), which are rotatably mounted in the main grinding box (1) via bearings.
4. The cement grinding apparatus according to claim 2, characterized in that: A material feeding rod (44) is fixedly installed on the mounting block (42) inside the main grinding box (1), and the material feeding rod (44) and the through hole (11) are at the same horizontal height.
5. The cement grinding apparatus according to claim 2, characterized in that: The motor (41) is provided with a protective shell (45).
6. The cement grinding apparatus according to claim 2, characterized in that: The top of the mounting block (42) is tapered.
7. The cement grinding apparatus according to claim 1, characterized in that: The top of the main grinding box (1) is connected to a feed hopper (12), and the bottom of the main grinding box (1) and the bottom of the auxiliary grinding box (2) are both connected to a discharge pipe (13).
8. The cement grinding apparatus according to claim 1, characterized in that: Both the main grinding box (1) and the auxiliary grinding box (2) are equipped with observation windows.
9. The cement grinding apparatus according to claim 1, characterized in that: Support legs (14) are provided at the lower end of the main grinding box (1) and the lower end of the auxiliary grinding box (2).