Separating and discharging device of vertical roller mill
By introducing a material distribution and feeding device consisting of a ash hopper, a first feeding pipe, a second feeding cone, and a Y-shaped feeding pipe into the vertical roller mill, the problems of imprecise material sorting and unstable feeding are solved, achieving fine material sorting and stable feeding, and reducing roller vibration and energy consumption.
Patent Information
- Application Number
- CN202422760338.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-13
AI Technical Summary
Existing vertical roller mills do not sort materials finely enough during the material sorting process, resulting in unstable material flow, which leads to roller vibration and mechanical damage, and increased power consumption.
The material distribution and feeding device includes a hopper, a first feeding pipe, a second feeding cone, a second feeding port, and a Y-shaped feeding pipe. The first and second feeding cones finely separate the material. Coarse material is fed into the feed side of the grinding roller for further crushing, while fine material is transported to the collection device through the Y-shaped feeding pipe to ensure a stable material flow.
It achieves precise material sorting and stable feed flow, reduces grinding roller vibration and mechanical damage, and lowers energy consumption.
Smart Images
Figure CN223556115U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a material distributing and discharging technical field, especially relates to a vertical roller mill material distributing and discharging device. BACKGROUND
[0002] The vertical roller mill is short for vertical mill, and it is a mill for grinding cement raw material, cement clinker, slag, coal ash and other raw materials, which is mainly composed of a machine body, a transmission device, a grinding disc and a grinding roller, and a powder concentrator is integrated on the top of the mill.
[0003] At present, the material entering the powder concentrator is separated by the powder concentrator, and the qualified fine powder is discharged from the mill as a product together with the airflow, while the coarse powder is directly returned to the center of the disc through the ash chute below the powder concentrator for regrinding with the new feeding material. The existing powder concentrator return material method has the following defects when grinding material: the material selection is not fine enough during the material distribution and screening process of the vertical roller mill, and the supply material flow is unstable, causing the grinding roller to vibrate, resulting in mechanical structure damage and increased power consumption. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at solving one of the technical problems existing in the prior art, and therefore proposes a vertical roller mill material distributing and discharging device, which can finely select the material during the material distribution and screening process, and the supply material flow is stable, without causing the grinding roller to vibrate.
[0005] The vertical roller mill material distribution and discharging device comprises a hopper, a first discharging pipe, a second material distribution cone, a second discharging port and a Y-shaped discharging pipe.
[0006] The vertical roller mill material distribution and discharging device can at least achieve the following beneficial effects: the material after preliminary selection is sent to the first discharging port by the first material distribution cone, and then is sent to the feeding side of the grinding roller for further crushing; the fine material is sent to the second discharging port by the second material distribution cone, and then is sent to the collecting device through the Y-shaped discharging pipe.
[0007] According to some embodiments of the present application, a first sealing door is arranged on the side wall of the hopper.
[0008] According to some embodiments of the present application, a second sealing door is arranged on the material guide cone.
[0009] According to some embodiments of the present application, the first discharging pipe and / or the Y-shaped discharging pipe are provided in multiple sections, and the sections are connected by threads.
[0010] According to some embodiments of the present application, a sealing pad is arranged at the connection between each section of the first discharging pipe.
[0011] According to some embodiments of the present application, an adjustable material distribution and blocking plate is arranged in the first discharging pipe, for controlling the discharging speed.
[0012] According to some embodiments of the present application, the first discharging pipe and the Y-shaped discharging pipe are uniformly arranged along the circumferential direction of the hopper, so that the distance between adjacent discharging pipes is the same.
[0013] According to some embodiments of the present application, the first discharging pipe and the Y-shaped discharging pipe are connected to the hopper by welding.
[0014] Additional aspects and advantages of the present application will be described in the following description, become apparent from the following description, or be learned by practicing the present application. BRIEF DESCRIPTION OF DRAWINGS
[0015] The above additional aspects and advantages of the present application will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:
[0016] Figure 1 is a front view of the vertical roller mill material distribution and discharging device according to the embodiment of the present application;
[0017] Figure 2 is a sectional view of the vertical roller mill material distribution and discharging device according to the embodiment of the present application;
[0018] Figure 3 is an enlarged view of the discharging pipe structure of the vertical roller mill material distribution and discharging device according to the embodiment of the present application;
[0019] Figure 4 is a top view of the vertical roller mill material distribution and discharging device according to the embodiment of the present application;
[0020] Figure 5 is a bottom view of the vertical roller mill material distribution and discharging device according to the embodiment of the present application.
[0021] Reference signs:
[0022] hopper 100, material guide cone 110, first material distribution cone 120, first discharging pipe 121, feeding nozzle 122, first discharging port 123, second material distribution cone 130, Y-shaped discharging pipe 131, material return port 140, total material discharging port 150, first sealing door 210, second sealing door 220, adjustable material distribution and blocking plate 300. DETAILED DESCRIPTION
[0023] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0024] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application. The device or element indicated is necessarily constructed and operated in a particular orientation.
[0025] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described to the first, the second is only used for distinguishing the technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0026] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be broadly understood, and the specific meaning of the above words in the utility model can be reasonably determined by the person skilled in the art in combination with the specific content of the technical scheme.
[0027] The vertical roller mill material distribution and discharging device according to the embodiments of the utility model will be described below with reference to Figures 1 to 5
[0028] The vertical roller mill material distribution and discharging device according to the embodiments of the utility model comprises an ash bucket 100, a first discharging pipe 121, a second material distribution cone 130, a second discharging port and a Y-shaped discharging pipe 131, the upper side of the grinding disc in the ash bucket 100 is provided with a material guide cone 110; the material guide cone 110 and the ash bucket 100 form a circular material area for collecting the return material of the powder concentrator; a plurality of first material distribution cones 120 are arranged between the material guide cone 110 and the ash bucket 100 in the circumferential direction, the first material distribution cones 120 divide the circular material area into several bucket-shaped material areas; each bucket-shaped material area is provided with a first discharging port 123; the first discharging pipe 121 is arranged outside the ash bucket 100 and is in communication with the first discharging port 123, the lower end of the first discharging pipe 121 is provided with a feeding nozzle 122, and the feeding nozzle 122 extends to the feeding side of the grinding roller; the second material distribution cone 130 is arranged between two first material distribution cones 120; the second discharging port has two, which are arranged on the bottom of the first material distribution cone 120 on both sides of the second material distribution cone 130; the Y-shaped discharging pipe 131 is arranged outside the ash bucket 100, and the upper two ends are in communication with the two second discharging ports respectively.
[0029] For example Figure 1 and Figure 4 As shown in the drawings, the preliminarily sorted material passes through the device, the first material distribution cone 120 sends the coarse material into the first discharging port 123 to the feeding side of the grinding roller for further crushing, the second material distribution cone 130 sends the fine material into the second discharging port, and the Y-shaped discharging pipe 131 sends the fine material to the collecting device. The coarse material flow entering the grinding roller for further crushing enters the ash bucket 100 again through the return port 140 after being crushed, and is distributed and discharged, until all the material is divided into fine material and flows out from the Y-shaped discharging pipe 131.
[0030] Through the arrangement of the feeding nozzle 122, the outlet of the first feeding pipe 121 is aligned with the feeding side of the grinding disc, so that the coarse material can easily enter the grinding disc for further crushing.
[0031] Furthermore, the Y-shaped feeding pipe 131 is also provided with a feeding nozzle 122, so that the fine material flowing out of the Y-shaped feeding pipe 131 can enter the collecting device.
[0032] Two second feeding openings are arranged, and the fine material is fed through the Y-shaped feeding pipe 131 connecting the two second feeding openings, and the remaining coarse material is transported to the grinding disc through the first feeding pipe 121 of the first feeding opening 123 for further crushing, so that the vertical roller mill material distribution and feeding device can finely select the material, and the feeding flow is stable, and the grinding roller is not vibrated.
[0033] In addition, the Y-shaped feeding pipe 131 can also avoid the total material feeding opening 150.
[0034] The installation position of the material distribution cone helps to collect the coarse material and feed the coarse material between the roller and the grinding disc in an ideal way, reducing the vibration caused by material segregation.
[0035] In some embodiments of the present application, a first sealing door 210 is arranged on the sidewall of the ash bucket 100.
[0036] For example Figure 4 As shown, a first sealing door 210 is arranged on the sidewall of the ash bucket 100, which is used to facilitate opening the ash bucket 100 from the outside to maintain and observe the inside of the ash bucket 100, and to discharge the internal material when a blockage or other failure occurs, facilitating troubleshooting and failure handling.
[0037] In some embodiments of the present application, a second sealing door 220 is arranged on the material guide cone 110.
[0038] For example Figure 4 As shown, the second sealing door 220 is arranged on the material guide cone 110, and the total number is three. Three second sealing doors 220 are arranged on the material guide cone 110 to open the ash bucket 100 from the inside for maintenance and troubleshooting. The number of second sealing doors 220 is three, which facilitates maintenance and troubleshooting of the inside of the ash bucket 100 from multiple directions, and facilitates troubleshooting and failure handling when a blockage or other failure occurs.
[0039] In some embodiments of the present application, the first feeding pipe 121 and / or the Y-shaped feeding pipe 131 are arranged in multiple sections, and are connected by threads.
[0040] For example Figure 1 , Figure 2 and Figure 3As shown, the first downcomer pipe 121 and the Y-shaped downcomer pipe 131 are both provided in multiple sections, and the sections are connected by threads.
[0041] And through the threaded connection, the length of the first downcomer pipe 121 and the Y-shaped downcomer pipe 131 can be adjusted, and the direction of the feeding nozzle 122 can also be adjusted.
[0042] In some embodiments of the present application, a sealing gasket is arranged at the connection between each section of the first downcomer pipe 121.
[0043] A sealing gasket is arranged at the connection between each section of the first downcomer pipe 121, ensuring that the bolt fastening between each section of the downcomer pipe is not loose, and the connection between each section is more secure, and material will not leak from the connection.
[0044] Furthermore, a sealing gasket is also arranged at the connection between each section of the Y-shaped downcomer pipe 131, making the connection between each section more secure and preventing material from leaking from the connection.
[0045] In some embodiments of the present application, an adjustable material distribution baffle 300 is arranged in the first downcomer pipe 121 to control the downflow speed.
[0046] For example Figure 1 And Figure 3 As shown, the adjustable material distribution baffle 300 is arranged in the first downcomer pipe 121 to control the downflow speed. The opening of the first downcomer pipe 121 is adjusted by controlling the depth of the adjustable material distribution baffle 300 inserted into the first downcomer pipe 121, thereby controlling the downflow speed.
[0047] Furthermore, an adjustable material distribution baffle 300 is also arranged in the Y-shaped downcomer pipe 131 to control the downflow speed.
[0048] In some embodiments of the present application, the first downcomer pipe 121 and the Y-shaped downcomer pipe 131 are uniformly arranged along the circumferential direction of the ash bucket 100, so that the distance between adjacent downcomer pipes is the same.
[0049] For example Figure 1 And Figure 5 As shown, the first downcomer pipe 121 and the Y-shaped downcomer pipe 131 are uniformly arranged along the circumferential direction of the ash bucket 100, so that the distance between adjacent downcomer pipes is the same, preventing the material from concentrating at a certain point to cause vibration, and ensuring that the material flows out evenly.
[0050] In some embodiments of the present application, the first downcomer pipe 121 and the Y-shaped downcomer pipe 131 are connected to the ash bucket 100 by welding.
[0051] The first downcomer pipe 121 and the Y-shaped downcomer pipe 131 are connected with the ash hopper 100 by welding, so as to guarantee the stability of the connection.
[0052] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0053] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A vertical roller mill material distribution and feeding device, characterized in that, include: A hopper is provided, with a guide cone installed above the grinding disc inside the hopper. An annular material zone for collecting return material from the classifier is formed between the guide cone and the hopper. Several first dividing cones are provided along the circumferential direction between the guide cone and the hopper, and the first dividing cones divide the annular material zone into several bucket-shaped material zones. Each bucket-shaped material zone is provided with a first discharge port. The first feeding pipe is located outside the ash hopper and connected to the first feeding port. A feeding nozzle is installed at the lower end of the first feeding pipe and extends to the feeding side of the grinding roller through the feeding nozzle. The second material distribution cone is disposed between the two first material distribution cones; There are two second discharge ports, which are respectively located on both sides of the second distribution cone at the bottom of the first distribution cone. The Y-shaped discharge pipe is located on the outside of the ash hopper, with its upper two ends connected to the two second discharge ports respectively.
2. The vertical roller mill material distribution and feeding device according to claim 1, characterized in that, A first sealing door is provided on the side wall of the ash hopper.
3. The vertical roller mill material distribution and feeding device according to claim 1, characterized in that, The guide cone is equipped with a second sealing door.
4. The vertical roller mill material distribution and feeding device according to claim 1, characterized in that, The first feed tube and / or the Y-shaped feed tube are multi-segmented, and each segment is connected by a thread.
5. The vertical roller mill material distribution and feeding device according to claim 4, characterized in that, A sealing gasket is provided at the connection between each section of the first feed pipe.
6. The vertical roller mill material distribution and feeding device according to claim 1, characterized in that, An adjustable material distribution baffle is provided in the first feeding pipe to control the feeding speed.
7. The vertical roller mill material distribution and feeding device according to claim 1, characterized in that, The first discharge pipe and the Y-shaped discharge pipe are evenly arranged along the circumferential direction of the ash hopper, so that the distance between adjacent discharge pipes is the same.
8. The vertical roller mill material distribution and feeding device according to claim 1, characterized in that, The first discharge pipe and the Y-shaped discharge pipe are connected to the ash hopper by welding.