A mill with a grinding aid addition structure
By introducing a grinding aid additive structure and a cleaning device into the mill, the problem of cement adhering to the surface of the crushing rollers was solved, thereby improving crushing efficiency and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JIN YUAN CEMENT
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-10
AI Technical Summary
Cement adheres to the surface of the crushing roller during the extrusion process, affecting the subsequent crushing effect.
A grinding aid addition structure is introduced into the mill. The surface of the cast nail roller is cleaned by cleaning rods and brushes, and the grinding aid is added to the cement clinker during the crushing process to activate its activity.
It effectively avoids cement clinker adhesion, improves crushing efficiency and cement clinker processing effect, and reduces maintenance costs.
Smart Images
Figure CN224475053U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cement processing equipment, and more specifically, to a mill with a grinding aid addition structure. Background Technology
[0002] Cement grinding is the final step in cement manufacturing. It requires the use of a grinding mill to process the cement clinker to a suitable particle size and form a certain particle size distribution, thereby increasing its hydration surface area, accelerating the hydration rate, and meeting the requirements for cement paste setting and hardening.
[0003] Announcement No. CN221156825U discloses a cement raw material grinding mill that uses cast nail rollers instead of traditional gear rollers. The cast nail plates are detachably mounted on the roller shaft, and end caps further limit and fix the cast nail plates to prevent displacement during grinding. Furthermore, hard alloy studs are embedded within the cast nail plates, providing strong wear resistance and improving cement grinding efficiency. After prolonged use and wear, individual studs or cast nail plates can be easily replaced, reducing maintenance costs.
[0004] However, during the implementation of this device, since the device crushes the cement by rotating two rollers, the pressure of the crushing action causes the cement to adhere to the surface of the crushed rollers when it is crushed into powder, which affects the subsequent crushing of the nail rollers. To address this issue, a mill with a grinding aid addition structure is proposed. Utility Model Content
[0005] The purpose of this invention is to solve the problem that when cement is compressed into powder, it adheres to the surface of the crushed roller under pressure, thus affecting the subsequent crushing of the nail roller.
[0006] To achieve the above-mentioned objectives and improve the aforementioned problems, this utility model provides a mill with a grinding aid addition structure, including a mill device. A feed hopper is fixedly connected to the upper end of the mill device, and a discharge pipe is fixedly connected to the bottom of the mill device. Two cast nail rollers are arranged inside the mill device, and a rotating rod is rotatably connected inside the mill device. A cleaning rod is fixedly connected to the surface of the rotating rod, and a brush is provided on the cleaning rod, with the brush in contact with the cast nail rollers.
[0007] As a preferred technical solution of this application, both the rotating rod and the mounting shaft of the nail roller are fixedly connected to synchronous pulleys, and the surfaces of the two synchronous pulleys are connected by a synchronous belt.
[0008] As a preferred technical solution of this application, the mill equipment has two guide blocks fixedly connected inside, and the two guide blocks are inclined on the side that is close to each other.
[0009] As a preferred technical solution of this application, the mill equipment is internally fixedly connected to a fixed shell, and the surfaces of the cast nail roller and the rotating rod are rotatably connected to the interior of the fixed shell.
[0010] As a preferred technical solution of this application, a storage box is fixedly connected inside the mill equipment, the storage box extends through the inside of the mill equipment, and an outlet hopper is fixedly connected to the surface of the storage box.
[0011] As a preferred technical solution of this application, a placement plate is slidably connected inside the storage box, the placement plate is inclined, a movable frame is slidably connected inside the fixed shell, one end of the movable frame away from the fixed shell extends into the interior of the storage box, the surface of the movable frame is slidably connected to the interior of the storage box, and one end of the movable frame located inside the storage box is fixedly connected to the placement plate.
[0012] As a preferred technical solution of this application, a rotating disk is fixedly connected to the surface of the rotating rod, and the surface of the rotating disk is provided with grooves arranged in a circular pattern. The grooves are arranged in a trapezoidal shape. A return spring is fixedly connected inside the storage box, and the end of the return spring away from the storage box is fixedly connected to the placement plate.
[0013] As a preferred technical solution of this application, a rubber pad is fixedly connected to the surface of the placement plate, and the rubber pad is in contact with the storage box.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] In the scheme of this application:
[0016] By starting the motor, the nail roller drives the cleaning rod to rotate, preventing cement clinker from adhering to the nail roller. This avoids the adhering cement clinker from affecting subsequent crushing and further improves the processing effect of cement clinker. Attached Figure Description
[0017] Figure 1 A schematic diagram of a mill structure with a grinding aid addition structure provided for this application;
[0018] Figure 2 A schematic diagram of the internal structure of a mill with a grinding aid addition structure provided in this application;
[0019] Figure 3 A schematic diagram of the internal structure of the fixed shell in a mill with a grinding aid addition structure provided in this application;
[0020] Figure 4 This is a schematic diagram of the internal structure of the storage tank in a mill with a grinding aid addition structure, provided for this application.
[0021] The image shows:
[0022] 1. Grinding mill equipment; 2. Discharge pipe; 3. Storage box; 4. Feed hopper; 5. Cast nail roller; 6. Fixed shell; 7. Rotating rod; 8. Cleaning rod; 9. Moving frame; 10. Guide block; 11. Synchronous belt; 12. Synchronous pulley; 13. Rotating disc; 14. Groove; 15. Placement plate; 16. Return spring; 17. Outlet hopper. Detailed Implementation
[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[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] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A mill with a grinding aid addition structure includes a mill device 1. A feed hopper 4 is fixedly connected to the upper end of the mill device 1, and a discharge pipe 2 is fixedly connected to the bottom of the mill device 1. Two cast nail rollers 5 are installed inside the mill device 1, and the two cast nail rollers 5 are driven by a motor to complete the crushing of cement clinker. The motor is covered by a protective shell. The installation of the motor and the driving of the cast nail rollers 5 are described in the comparative case, so they will not be explained in detail again. A rotating rod 7 is rotatably connected inside the mill device 1. A cleaning rod 8 is fixedly connected to the surface of the rotating rod 7. A brush is provided on the cleaning rod 8, and the brush is in contact with the cast nail rollers 5.
[0028] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, synchronous pulleys 12 are fixedly connected to the mounting shaft surfaces of the rotating rod 7 and the nail roller 5. The surfaces of the two synchronous pulleys 12 are connected to a synchronous belt 11. Through the arrangement of the synchronous pulleys 12 and the synchronous belt 11, the nail roller 5 can drive the rotating rod 7 through the synchronous belt 11 and the synchronous pulleys 12 when it rotates.
[0029] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the mill equipment 1 has two guide blocks 10 fixedly connected inside. The two guide blocks 10 are inclined on the side that is close to each other. The material is discharged through the guide blocks 10.
[0030] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the mill equipment 1 is internally fixedly connected to a fixed shell 6. The surfaces of the cast nail roller 5 and the rotating rod 7 are rotatably connected to the inside of the fixed shell 6. The fixed shell 6 protects its internal structure and prevents it from directly contacting the crushed cement clinker.
[0031] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a storage box 3 is fixedly connected inside the mill equipment 1. The storage box 3 extends through the inside of the mill equipment 1. A discharge hopper 17 is fixedly connected to the surface of the storage box 3. The grinding aid is stored in the storage box 3 and discharged through the discharge hopper 17.
[0032] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a placement plate 15 is slidably connected inside the storage box 3, and the placement plate 15 is inclined. A movable frame 9 is slidably connected inside the fixed shell 6. The end of the movable frame 9 away from the fixed shell 6 extends into the interior of the storage box 3, and the surface of the movable frame 9 is slidably connected to the interior of the storage box 3. The end of the movable frame 9 located inside the storage box 3 is fixedly connected to the placement plate 15.
[0033] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a rotating disk 13 is fixedly connected to the surface of the rotating rod 7. The surface of the rotating disk 13 has grooves 14 arranged in a circular pattern. The grooves 14 are arranged in a trapezoidal shape. A return spring 16 is fixedly connected inside the storage box 3. The end of the return spring 16 away from the storage box 3 is fixedly connected to the placement plate 15. When the placement plate 15 blocks the outlet bucket 17, the return spring 16 is in a stretched state.
[0034] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a rubber pad is fixedly connected to the surface of the placement plate 15. The rubber pad is in contact with the storage box 3. The gap between the storage box 3 and the placement plate 15 is filled by the rubber pad, which reduces the leakage of grinding aid.
[0035] The operation of the mill with grinding aid addition structure provided by this utility model is as follows: When it is necessary to crush cement clinker, the operator starts the motor, which drives the cast nail roller 5. Then the two cast nail rollers 5 rotate to crush the cement clinker. At the same time, when the cast nail roller 5 rotates, the cast nail roller 5 drives the synchronous wheel 12 on its surface to rotate. Then the synchronous wheel 12 drives the synchronous belt 11 to rotate, which drives the rotating rod 7 and the synchronous wheel 12 on its surface to rotate. Then the rotating rod 7 drives the cleaning rod 8 to rotate. Then the cleaning rod 8 drives the brush on its surface to clean the surface of the cast nail roller 5, thereby preventing the cement clinker from adhering to the cast nail roller 5 during crushing.
[0036] When the rotating rod 7 rotates, it drives the rotating disk 13 to rotate. The rotation of the rotating disk 13 causes the groove 14 to align with the moving frame 9. Under the elastic force of the return spring 16, the placement plate 15 is forced to move downward, pushing the moving frame 9. The moving frame 9 then inserts into the groove 14, so that the placement plate 15 no longer blocks the outlet hopper 17. This allows the grinding aid inside the storage box 3 to be discharged. The grinding aid flows out of the outlet hopper 17 and comes into contact with the crushed cement clinker, thus mixing with the cement clinker. As the rotating disk 13 rotates, the inclined surface of the groove 14 comes into contact with the moving frame 9, causing the moving frame 9 to be lifted. This pushes the placement plate 15 upward to block the outlet hopper 17, allowing the grinding aid to flow out slowly and mix with the cement clinker. The grinding aid stimulates the activity index of the active admixture, improves the strength of cement at different ages, reduces the clinker ratio, increases the admixture content, and reduces cement costs.
[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0038] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.
Claims
1. A mill with a grinding aid addition structure, comprising mill equipment (1), characterized in that: The upper end of the mill equipment (1) is fixedly connected to a feed hopper (4), the bottom of the mill equipment (1) is fixedly connected to a discharge pipe (2), the inside of the mill equipment (1) is provided with two casting nail rollers (5), the inside of the mill equipment (1) is rotatably connected to a rotating rod (7), the surface of the rotating rod (7) is fixedly connected to a cleaning rod (8), the cleaning rod (8) is provided with a brush, and the brush is in contact with the casting nail rollers (5).
2. A mill with a grinding aid addition structure according to claim 1, characterized in that, Both the rotating rod (7) and the nail roller (5) are fixedly connected to the mounting shaft surface with synchronous pulleys (12), and the surfaces of the two synchronous pulleys (12) are connected by synchronous belts (11).
3. A mill with a grinding aid addition structure according to claim 2, characterized in that, The mill equipment (1) has two guide blocks (10) fixedly connected inside, and the two guide blocks (10) are inclined on the side that is close to each other.
4. A mill with a grinding aid addition structure according to claim 3, characterized in that, The grinding mill (1) is internally fixedly connected to a fixed shell (6), and the surfaces of the cast nail roller (5) and the rotating rod (7) are rotatably connected to the interior of the fixed shell (6).
5. A mill with a grinding aid addition structure according to claim 4, characterized in that, A storage box (3) is fixedly connected inside the mill equipment (1). The storage box (3) extends through the inside of the mill equipment (1). An outlet bucket (17) is fixedly connected to the surface of the storage box (3).
6. A mill with a grinding aid addition structure according to claim 5, characterized in that, The storage box (3) is slidably connected to a placement plate (15), which is inclined. The fixed shell (6) is slidably connected to a movable frame (9), with one end of the movable frame (9) away from the fixed shell (6) extending into the interior of the storage box (3). The surface of the movable frame (9) is slidably connected to the interior of the storage box (3), and one end of the movable frame (9) inside the storage box (3) is fixedly connected to the placement plate (15).
7. A mill with a grinding aid addition structure according to claim 6, characterized in that, A rotating disk (13) is fixedly connected to the surface of the rotating rod (7). The rotating disk (13) has grooves (14) arranged in a circular pattern on its surface. The grooves (14) are arranged in a trapezoidal shape. A return spring (16) is fixedly connected inside the storage box (3). The end of the return spring (16) away from the storage box (3) is fixedly connected to the placement plate (15).
8. A mill with a grinding aid addition structure according to claim 7, characterized in that, A rubber pad is fixedly connected to the surface of the placement plate (15), and the rubber pad is in contact with the storage box (3).