Vertical mill material blocking device capable of assisting in forming material layer
By designing a material-blocking device to assist in the formation of a material layer in the vertical roller mill, the problem of unstable material layer was solved, resulting in more efficient and stable grinding operations and improved grinding efficiency and equipment stability.
Patent Information
- Application Number
- CN202520331536.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-02-27
AI Technical Summary
The existing vertical roller mill has an unstable material layer formation, which leads to uneven grinding, increased equipment vibration and low production efficiency, affecting product quality and equipment life.
Design a vertical mill baffle device to assist in the formation of a material layer, including a shell, a feed guide rail, a baffle plate and an adjustable connecting component. By guiding the material and adjusting the position of the baffle plate, the uniformity and stability of the material layer thickness are ensured.
It improves the grinding efficiency of vertical roller mills, reduces equipment vibration and noise, extends equipment service life, and enhances product quality and production stability.
Smart Images
Figure CN223945759U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of grinding device, specifically relates to a vertical mill material blocking device of auxiliary formation material layer. BACKGROUND
[0002] In the field of industrial grinding, vertical roller mill (referred to as vertical mill) is widely used in cement, electric power, metallurgy, chemical industry and many other industries due to its small floor space, high grinding efficiency and low energy consumption, and plays a very key role in grinding operation. The working principle of vertical roller mill is that the rotation of the grinding disc drives the material movement, and the grinding roller exerts pressure on the material, and the relative movement between the grinding disc and the grinding roller extrudes and grinds the material to achieve grinding.
[0003] In the whole operation system of vertical roller mill, the formation of material layer plays a decisive role in the efficiency and stability of the mill. Stable and reasonable thickness of material layer can ensure full and uniform contact between grinding roller and material, effectively transmit grinding force, and thus improve grinding effect and increase mill output. At the same time, stable material layer also helps to reduce vibration and noise during mill operation, prolong the service life of the equipment.
[0004] However, in the actual operation process of the existing vertical mill, the formation of material layer mainly depends on the relative movement of the grinding disc and the grinding roller. However, there are significant differences in material characteristics, such as different sources of material with wide particle size distribution, uneven mixing of coarse and fine particles, high moisture content of some materials, which can easily lead to material agglomeration, and different hardness of different ores, which will greatly affect the formation of material layer. Moreover, the operating conditions are in dynamic change, such as the adjustment of mill speed, the fluctuation of feeding amount, etc., which will make the formation of material layer unstable.
[0005] The instability of material layer formation brings a series of serious problems. Due to uneven contact between grinding roller and material, some areas of material are overground, resulting in overgrinding phenomenon, which not only wastes energy, but also may affect the quality of products; while some areas of material are not ground enough, which cannot meet the expected particle size requirement, thus affecting the grinding effect and output of the mill. In addition, unstable material layer will also intensify the vibration of the mill, increase the probability of equipment failure, increase maintenance cost and reduce production efficiency.
[0006] In summary, in order to overcome the shortcomings of the existing vertical mill in material layer formation and improve the operation performance of vertical roller mill, it is urgent to provide a material blocking device which can assist in forming stable material layer to meet the needs of industrial production for efficient and stable grinding operation. UTILITY MODEL CONTENT
[0007] In view of the defects of the prior art, the utility model discloses a vertical mill material blocking device for assisting in forming material layer, which is used for better forming material layer of the vertical roller mill, improving the grinding efficiency of the vertical roller mill, and further meeting the needs of industrial production for efficient and stable grinding operation.
[0008] In order to realize the above-mentioned purpose, the utility model provides a vertical mill material blocking device for assisting in forming material layer, which comprises a shell, the shell is used for replacing the upper shell of the vertical roller mill, and the top of the shell is provided with an upper flange, and the bottom is provided with a lower flange, the left and right sides of the shell are provided with mill roll mounting ports, and the front and rear sides are provided with access doors, at least one side of the access door is provided with a material inlet guide rail, the material inlet guide rail is used for guiding the material to be ground to the center of the grinding base of the vertical roller mill, the upper flange is bolted with the powder classifier of the vertical roller mill, the lower flange is bolted with the lower shell of the vertical roller mill, and the front and rear sides of the shell are respectively connected with the material blocking plates through the connecting assemblies, and the position of the material blocking plate corresponds to the grinding diameter of the vertical roller mill.
[0009] Preferably, the connecting assembly comprises a long steel plate, one end of the long steel plate is connected to the inner wall of the shell and is arranged close to the side of the corresponding end access door, and the other end is adjustably connected with the material blocking plate through a screw in the up-down direction, so that the position of the material blocking plate can be adjusted according to the needs.
[0010] Preferably, the connecting assembly further comprises a fan-shaped steel plate, the bottom edge of the long steel plate does not exceed the lowest part of the shell, one straight edge of the fan-shaped steel plate is welded to the side of the long steel plate, and the arc edge of the fan-shaped steel plate is welded to the inner wall of the shell, so as to improve the connection strength of the long steel plate.
[0011] Preferably, the fan-shaped steel plate is welded to the side of the long steel plate which is away from the rotating direction of the grinding base, so that the connecting assembly can better resist the impact of the material.
[0012] Preferably, the upper part of the material blocking plate is square, and the lower part is fan-shaped, and the lower part of the material blocking plate extends above the grinding base without contacting the grinding base, so as to prevent mutual interference.
[0013] Preferably, a plurality of groups of connecting holes are arranged on the long steel plate and the material blocking plate in correspondence, the connecting holes on the long steel plate are circular holes, the connecting holes on the material blocking plate are vertical long holes, screws are correspondingly arranged in the circular holes and the long holes, and nuts are threadedly connected to the screws after the screws sequentially penetrate the circular holes on the long steel plate and the long holes on the material blocking plate. This arrangement is used for flexibly adjusting and locking the up-down position of the material blocking plate according to the control needs of the material layer height.
[0014] The utility model also includes other device or component that can make the vertical mill material blocking device that forms the auxiliary material layer normal use, all are the conventional technical means in the field.
[0015] The working principle of the utility model is that the material inlet guide rail is arranged to guide the material to be ground to the center of the grinding base of the vertical roller mill, thereby improving the grinding efficiency; the grinding roller mounting port is arranged to facilitate the disassembly and assembly of the grinding roller; the maintenance door is arranged to facilitate the inspection and maintenance of the material blocking plate and other components; the material blocking plate is arranged to timely wipe off the excess material when the material layer is too high during the operation of the vertical roller mill, thereby avoiding the problems of uneven stress, reduced service life of the vertical roller mill, unstable product particle size and sieve residue, and ensuring the stable operation of the vertical roller mill.
[0016] The utility model has the advantages of simple structure, convenient adjustment, and better formation of the material layer by the vertical roller mill, thereby improving the grinding efficiency of the vertical roller mill and meeting the needs of industrial production for efficient and stable grinding operation. BRIEF DESCRIPTION OF DRAWINGS
[0017] The utility model will be further described below in combination with the drawings and examples.
[0018] Figure 1 is the front view structural schematic diagram of the utility model in the embodiment.
[0019] Figure 2 is the internal side view structural schematic diagram of the utility model in the embodiment.
[0020] Figure 3 is the structural schematic diagram of the material blocking plate of the utility model in the embodiment.
[0021] Figure 4 is the welding position schematic diagram of the sector steel plate of the utility model in the embodiment.
[0022] In the figure: 1 - shell, 2 - grinding roller mounting port, 3 - maintenance door, 4 - material inlet guide rail, 5 - upper flange, 6 - lower flange, 7 - long steel plate, 8 - material blocking plate, 9 - sector steel plate, 10 - grinding base. DETAILED DESCRIPTION
[0023] The utility model is clearly described below in combination with the drawings and specific embodiments in the embodiments of the utility model, the description herein is only used to explain the utility model, but not as the limitation of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor, any modification, equivalent replacement, improvement etc. should be included in the protection scope of the utility model.
[0024] Embodiment
[0025] As Figures 1-4 shown, the utility model provides a kind of vertical mill material blocking device for forming layer, including shell 1, the shell is used to replace the upper shell of vertical roller mill, and the top of shell is equipped with upper flange 5, bottom is equipped with lower flange 6, the left and right sides of the shell are equipped with mill roll mounting port 2, front and rear sides are equipped with access door 3, the two sides of access door are equipped with material inlet guide rail 4, the material inlet guide rail is used to guide flow to the center of grinding base 10 of vertical roller mill for the material to be ground, the upper flange is bolted with powder concentrator (not shown in drawing) of vertical roller mill, the lower flange is bolted with lower shell (not shown in drawing) of vertical roller mill, the front and rear sides of the shell are respectively connected with material blocking plate 8 by adjustable connection of connecting assembly, the material blocking plate corresponds with the position of grinding medium diameter of vertical roller mill.
[0026] As Figure 2 、 Figure 3 shown, specifically, the connecting assembly includes long steel plate 7, one end of the long steel plate is connected on the inner wall of shell and is close to the side of corresponding end access door, and the other end is connected with material blocking plate by screw adjustable connection up and down, it is convenient to adjust the position of material blocking plate according to need. The connecting assembly further includes sector steel plate 9, the bottom edge of long steel plate does not exceed the lowest place of shell, the straight edge of sector steel plate is welded on the side of long steel plate, and the arc edge of sector steel plate is welded on the inner wall of shell, for improving the connection strength of long steel plate. More specifically, the sector steel plate is welded on the side of long steel plate, which is away from the rotating direction of grinding base, for making the connecting assembly better resist material impact. In this embodiment, the welding position of two long steel plates and shell is the two sides of access door, that is, two material blocking plates are not on the same vertical section, for making layer control more stable.
[0027] As Figure 4As shown, in the embodiment, the upper part of the material blocking plate is square, the lower part is fan-shaped, and the lower part of the material blocking plate extends above the grinding base and does not contact the grinding base. The material blocking plate is provided with four groups of connecting holes corresponding on the long steel plate, the connecting holes on the long steel plate are round holes (not shown in the figure), the connecting holes on the material blocking plate are vertical long holes, screws are correspondingly arranged in the round holes and the long holes, and nuts are threadedly connected to the screws after the screws sequentially penetrate the round holes on the long steel plate and the long holes on the material blocking plate. The setting is used for flexibly adjusting and locking the up-down position of the material blocking plate according to the control requirement of the material layer height.
[0028] The working principle of the utility model is that: through setting the material inlet guide rail, the material to be ground is guided to the center of the grinding base of the vertical roller mill, so as to improve the grinding efficiency; through setting the grinding roller mounting port, the grinding roller is convenient to disassemble and assemble; through setting the maintenance door, the components such as the material blocking plate are convenient to check and maintain; through setting the material blocking plate, when the material layer is too high during the working process of the vertical roller mill, the excess material is timely wiped, the problems such as uneven stress leading to the life reduction of the vertical roller mill, the unstable product granularity and sieve residue, etc. are avoided, and the stable operation of the vertical roller mill is ensured. At the same time, through adjusting the up-down position of the material blocking plate, the thickness of the material layer can be freely adjusted, and the grinding roller height is matched, so that the best grinding efficiency is achieved.
[0029] The above has described the embodiment of the utility model, the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A vertical mill material blocking device for assisting in the formation of a material layer, comprising a shell, the shell being used to replace the upper shell of a vertical roller mill, and the top of the shell being provided with an upper flange and the bottom of the shell being provided with a lower flange, characterized in that: The left and right sides of the shell are provided with mill roller mounting openings, and the front and rear sides are provided with access doors, at least one side of the access door is provided with a material inlet guide rail, the material inlet guide rail is used for guiding the material to be ground to the center of the grinding base of the vertical roller mill, the upper flange is bolted with the powder concentrator of the vertical roller mill, the lower flange is bolted with the lower shell of the vertical roller mill, and the front and rear sides of the shell are respectively adjustably connected with the material blocking plates through the connecting assemblies, and the positions of the material blocking plates correspond to the grinding diameters of the vertical roller mill.
2. A vertical mill damming device to assist in forming a layer of material according to claim 1, characterised in that: The connecting assembly comprises a long steel plate, one end of the long steel plate is connected to the inner wall of the shell and is arranged close to one side of the corresponding end access door, and the other end is adjustably connected with the material blocking plate through a screw in the up-down direction.
3. A vertical mill damming device to assist in forming a layer of material according to claim 2, wherein: The connecting assembly further comprises a fan-shaped steel plate, the bottom edge of the long steel plate is not higher than the lowest part of the shell, one straight edge of the fan-shaped steel plate is welded to the side of the long steel plate, and the arc edge of the fan-shaped steel plate is welded to the inner wall of the shell.
4. A vertical mill damming device to assist in forming a layer of material according to claim 3, wherein: The fan-shaped steel plate is welded to the side of the long steel plate which is away from the rotating direction of the grinding base.
5. A vertical mill damming device for assisting in the formation of a layer of material according to any one of claims 2 to 4, characterised in that: The upper part of the material blocking plate is square, and the lower part is fan-shaped, and the lower part of the material blocking plate extends above the grinding base and does not contact the grinding base.
6. A vertical mill damming device to assist in forming a layer of material according to claim 5, wherein: The long steel plate and the material blocking plate are correspondingly provided with a plurality of groups of connecting holes, the connecting holes on the long steel plate are circular holes, the connecting holes on the material blocking plate are vertical long holes, screws are correspondingly arranged in the circular holes and the long holes, and nuts are threadedly connected to the screws after the screws sequentially penetrate the circular holes on the long steel plate and the long holes on the material blocking plate.