Millstone material distribution device for vertical mill
By designing a vertical grinding grinding disc fabric device that adapts to different feeding methods and powder selection methods, the problem that the grinding materials in the vertical roller mill cannot be uniformly fabricated, and higher grinding efficiency and equipment stability are achieved , adapts to chute-type and central cylinder feeding, meeting the requirements of different powder selection methods.
Patent Information
- Application Number
- CN202323351581.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-10
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-10
AI Technical Summary
The grinding materials in the vertical roller mill cannot ideally fall in the center of the grinding disc, resulting in the formation of a conical pile, and the thickness of the local material layer is large, causing irregular vibrations and even jumps and stops of the grinding roller. The existing technology is difficult to effectively solve this problem. .
Design a grinding disc fabric device for vertical grinding, including a fixed seat, grinding disc fabric device body and scraper, adopts a split structure and cantilever design, connected by fasteners, one end of the device body is welded to the middle body lining plate, and the other end is distanced from it The geometric center of the grinder has a certain distance R, which adapts to different feeding methods and powder selection methods to enhance the fabric effect.
Achieve more uniform grinding fabrics, enhance grinding efficiency, easy installation and disassembly, adapt to chute-type and central cylinder feeding, meet the requirements of different powder selection methods, reduce redundant structures, improve the stability of the equipment and Maintainability.
Smart Images
Figure CN222267407U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to a vertical roller mill, in particular to a grinding disc material distribution device for the vertical mill. Background Art
[0002] Vertical roller mill, also known as vertical mill, is a widely used process equipment in the industrial milling industry. From the working principle of the vertical mill, we can know that the material to be ground falls on the center of the grinding disc of the vertical mill, and under the centrifugal force generated by the rotation of the grinding disc, it gradually rolls outward to achieve more uniform distribution of materials, thereby achieving higher grinding efficiency.
[0003] However, due to various factors (such as the density, particle size, viscosity, water content of the material to be ground and chute feeding), the material entering the mill cannot fall on the ideal geometric center of the grinding disc, but will deviate from the center of the grinding disc to form a conical material pile, causing the local material layer thickness deviation to be too large, which will easily cause irregular vibration of the vertical mill roller, and in severe cases even stop and cannot continue production.
[0004] Therefore, the defects of the existing technology put forward higher design requirements:
[0005] First, necessary measures should be taken to destroy the conical material pile formed by the deviation from the center of the grinding disc, so that it can be quickly flattened to achieve more uniform material distribution, thereby achieving higher grinding efficiency. Secondly, the technical solution adopted by the material distribution device must be able to meet the requirements of easy installation and disassembly; thirdly, the technical solution adopted by the material distribution device must be able to meet the requirements of different feeding methods at the same time, such as chute feeding or center barrel feeding; finally, the technical solution adopted by the material distribution device must be able to meet the requirements of different powder selection methods at the same time, such as there is no drop barrel device under the conical rotor of the coarse powder selector. Utility Model Content
[0006] The utility model aims at the grinding disc distribution problem of the vertical mill in the prior art, and provides a grinding disc distribution device for the vertical mill which has a simple structure and is easy to install and disassemble without adding redundant structures and changing the original stereotyped product structure.
[0007] The technical solution of the utility model is specifically as follows:
[0008] A grinding disc distribution device for a vertical mill comprises a fixing seat, the fixing seat being connected to a grinding disc distribution device body via a fastener;
[0009] The grinding disc material distribution device body comprises two scrapers arranged in parallel, and a bottom plate arranged at the bottom of the scrapers, and a reinforcing rib plate is arranged in the middle of the scrapers;
[0010] One end of the grinding disc material distribution device body is welded to the middle machine body lining plate through a fixing seat, and the other end is at a distance R from the geometric center of the grinding disc, where R>0.
[0011] The fixing seat comprises a fixing seat top plate, a fixing seat vertical plate is fixedly connected to the bottom of the fixing seat top plate, two radial connecting plates are connected to the sides of the fixing seat vertical plate, a transverse connecting plate is arranged between the two radial connecting plates, and each radial connecting plate is connected to a fixing seat welding plate.
[0012] A fixed seat rib plate is arranged between the fixed seat top plate and the fixed seat vertical plate.
[0013] Lightening holes are provided on the scraper on each side.
[0014] The beneficial effects of the utility model are:
[0015] 1. Split structure, easy to install and disassemble: Split structure is easy for customers to replace and maintain on site;
[0016] 2. The cantilever structure can adapt to both chute feeding and center barrel feeding conditions, and can also meet the requirements of different powder selection methods;
[0017] 3. The design length of the grinding disc distribution device is a certain distance R from the geometric center of the grinding disc, so that its number can be increased symmetrically along the circumferential direction according to the working conditions, thereby enhancing its distribution effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure of the grinding disc feeding device for the vertical mill;
[0019] Figure 2 It is a structural schematic diagram of a fixed seat;
[0020] Figure 3 It is a structural schematic diagram of the grinding disc feeding device body for the vertical mill;
[0021] Figure 4 This is a schematic diagram of the installation of the grinding disc feeding device for the vertical mill. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0024] like Figure 1 As shown, a grinding disc distribution device for a vertical mill includes a fixing seat 1, and the fixing seat 1 is connected to the grinding disc distribution device body 3 through a fastener 2. When the customer installs on site, the fixing seat 1 is installed and fixed by welding it to the middle body lining plate. Among them, the fastener 2 can be in the form of fasteners such as bolts, elastic washers, and nuts.
[0025] like Figure 2 As shown, the fixed seat 1 includes a fixed seat top plate 4, a fixed seat vertical plate 8 is fixedly connected to the bottom of the fixed seat top plate 4, two radial connecting plates 7 are connected to the sides of the fixed seat vertical plate 8, a transverse connecting plate 5 is arranged between the two radial connecting plates 7, and each radial connecting plate 7 is connected to a fixed seat welding plate 6.
[0026] Preferably, a fixing seat rib plate 9 is provided between the fixing seat top plate 4 and the fixing seat vertical plate 8 .
[0027] like Figure 3 As shown, the grinding disc material distribution device body 3 includes two parallel scrapers 11, and a bottom plate 10 arranged at the bottom of the scrapers 11, and a reinforcing rib plate 12 is arranged in the middle of the scrapers 11. In this way, the grinding disc material distribution device body 3 constitutes a box-type structure.
[0028] Preferably, the length of the grinding wheel distribution device body 3 is smaller than the inner diameter of the grinding wheel, that is, one end of the grinding wheel distribution device body 3 is welded to the middle machine body liner through the fixing seat 1, and the distance from the other end to the geometric center of the grinding wheel is R, R>0.
[0029] Preferably, a weight-reducing hole 14 is provided on the scraper 11 on each side.
[0030] The structural principle of the utility model is:
[0031] 1. Without changing the overall structure of the original middle body finalized product, the fixing seat 1 is welded to the middle body lining plate to realize the installation and fixation of the material distribution device, and the height and position can be adjusted on site to adapt to different working conditions;
[0032] 2. The main body 3 of the grinding disc material distribution device adopts a box-type structure as a whole to increase its rigidity, and the projection area when viewed from above is small, which can reduce the impact of the materials entering the mill to a considerable extent. Weight-reducing holes 14 are added on the side to increase the rationality of the force of the overall structure, and a gradually decreasing streamlined design is adopted below to make it better meet the function of flattening the conical material pile;
[0033] 3. The split structure is adopted, and the above two parts are connected by fasteners 2 such as bolts, elastic washers, nuts, etc., which is convenient for installation and disassembly and replacement after damage, and easy for customers to replace and maintain on site.
[0034] 4. The cantilever structure can adapt to both chute feeding and center barrel feeding conditions, and can also meet the requirements of different powder selection methods;
[0035] 5. The design length of the grinding disc feeding device body is a certain distance R from the geometric center of the grinding disc, such as Figure 4 As shown, in this way, the number of materials can be increased symmetrically along the circumferential direction according to the working conditions, thereby enhancing the cloth effect.
[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the protection scope of the present invention.
Claims
1. A grinding disc feeding device for a vertical mill, characterized in that: It comprises a fixing seat (1), wherein the fixing seat (1) is connected to a grinding disc material distribution device body (3) via a fastener (2); The grinding disc material distributing device body (3) comprises two scrapers (11) arranged in parallel, and a bottom plate (10) arranged at the bottom of the scrapers (11), and a reinforcing rib plate (12) is arranged in the middle of the scrapers (11); One end of the grinding disc material distribution device body (3) is welded to the middle machine body lining plate through a fixing seat (1), and the other end is at a distance R from the geometric center of the grinding disc, where R>0.
2. The grinding wheel feeding device for a vertical mill according to claim 1, characterized in that: The fixed seat (1) comprises a fixed seat top plate (4), a fixed seat vertical plate (8) is fixedly connected to the bottom of the fixed seat top plate (4), two radial connecting plates (7) are connected to the sides of the fixed seat vertical plate (8), a transverse connecting plate (5) is arranged between the two radial connecting plates (7), and each radial connecting plate (7) is connected to a fixed seat welding plate (6).
3. The grinding wheel feeding device for a vertical mill according to claim 2, characterized in that: A fixed seat rib plate (9) is provided between the fixed seat top plate (4) and the fixed seat vertical plate (8).
4. The grinding wheel feeding device for a vertical mill according to claim 1, characterized in that: A weight-reducing hole (14) is provided on the scraper (11) on each side.