A vertical mill discharge screening device

Abstract

The application provides a vertical mill discharging and screening device, and relates to the technical field of vertical mill, which comprises a feeding pipe, two magnetic rollers and two scrapers are rotatably arranged in the feeding pipe, two first discharge pipes are arranged in the side of the feeding pipe, the two magnetic rollers are arranged in an up-and-down staggered mode, and the vertical projection areas of the two magnetic rollers are tangent or partially intersected, the scraper can be rotated to be attached to the magnetic roller and guide magnetic impurities to the first discharge pipe; the device can screen and collect and clean the magnetic impurities such as iron parts or iron filings in the material discharged from the vertical mill, prevents the magnetic impurities from entering the downstream process and affecting the operation of the subsequent processing equipment, and ensures normal production; the device is provided with two magnetic rollers arranged in an up-and-down staggered mode, which ensures smooth flow of the material and ensures that the material can all fall on the magnetic rollers for magnetic adsorption screening, and ensures full coverage of the material.

Description

Technical Field

[0001] This application relates to the field of vertical mill technology, and more specifically, to a vertical mill discharge screening device. Background Technology

[0002] Vertical roller mills are ideal large-scale grinding equipment, widely used in industries such as cement, power, metallurgy, chemical, and non-metallic minerals. They integrate crushing, drying, grinding, grading, and conveying, offering high production efficiency and the ability to grind lumpy, granular, and powdery raw materials into the required powdered materials. The belt conveyor and bucket elevator are key equipment for feeding materials into the vertical roller mill, transporting qualified materials to a high-pressure mixer for subsequent processes. However, if equipment malfunctions (such as belt rollers, thrust rollers, rails, screws, or scrapers falling off or wearing out), and these issues are not detected in time, they will not only disrupt normal equipment operation, but the fallen iron parts or iron filings may also enter downstream processes, affecting the operation of subsequent processing equipment and impacting normal production. Summary of the Invention

[0003] The purpose of this application is to provide a vertical mill discharge screening device, which can solve the technical problem that if the belt conveyor and bucket elevator of the vertical mill are responsible for transporting materials to the high-strength mixer, and the equipment failure is not handled in time, the falling iron parts may enter the downstream process, interfere with the operation of subsequent equipment, and affect normal production.

[0004] This application provides a vertical mill discharge screening device, including a feeding pipe. Two magnetic rollers and two scrapers are rotatably arranged inside the feeding pipe, and two first discharge pipes are connected to the side of the feeding pipe. The two magnetic rollers are arranged vertically and alternately, and the vertical projection areas of the two magnetic rollers are tangent or partially intersecting. The scrapers can be rotated to fit against the magnetic rollers and guide magnetic impurities to the first discharge pipes.

[0005] The feeding pipe has a first through hole on its side that communicates with the first discharge pipe, and the scraper can be rotated to close the first through hole.

[0006] A guide plate is fixedly installed inside the feeding pipe.

[0007] The feeding tube has two first rotating shafts and two second rotating shafts rotatably mounted inside via bearings. The magnetic roller is fixedly sleeved on the first rotating shaft, and the scraper is fixedly sleeved on the second rotating shaft. The feeding tube has two first motors and two second motors outside. The first motors drive the first rotating shaft to rotate, and the second motors drive the second rotating shaft to rotate.

[0008] The feeding pipe is equipped with a screening plate, which is located above the magnetic roller.

[0009] The feeding pipe is connected to a second discharge pipe on its side, and the screening plate is inclined.

[0010] The feeding pipe has a second through hole connected to the second discharge pipe and an installation groove connected to the second through hole on its side. A first cylinder is fixedly installed in the installation groove, and a baffle is slidably installed in the installation groove. The first cylinder can drive the baffle to move to close the second through hole.

[0011] The inner wall of the feeding pipe is hinged with a second cylinder, and the piston rod end of the second cylinder is hinged to the lower end of the screening plate.

[0012] A protective plate is fixedly installed at the lower end of the screening plate.

[0013] Both the first discharge pipe and the second discharge pipe are equipped with cover plates.

[0014] The beneficial effects of this utility model are:

[0015] This utility model provides a vertical mill discharge screening device. During feeding, the material from the vertical mill is conveyed through the feeding pipe and falls onto the magnetic roller. Magnetic impurities such as iron parts or iron filings in the material are attracted to the magnetic roller. Simultaneously, the magnetic roller rotates inward, allowing the material to fall smoothly while preventing the magnetic impurities from accumulating in localized areas. When it is necessary to clean the magnetic impurities, a scraper is rotated to fit against the magnetic roller, while the magnetic roller rotates outward. The scraper scrapes off the magnetic impurities attracted to the magnetic roller and guides them to the first discharge pipe. Subsequently, the magnetic impurities discharged from the first discharge pipe are collected and cleaned. This device can screen out and collect magnetic impurities such as iron parts or iron filings from the material discharged from the vertical mill, preventing them from entering downstream processes and affecting the operation of subsequent processing equipment, thus ensuring normal production. By setting two staggered magnetic rollers, the device ensures both smooth material flow and that all material falls onto the magnetic roller for magnetic adsorption and screening, ensuring full material coverage. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a sectional view of the overall main view structure in some embodiments of this application;

[0018] Figure 2This is a schematic diagram of the overall front view structure in some embodiments of this application.

[0019] The reference numerals in the attached figures are as follows:

[0020] 1. Feed pipe; 11. First discharge pipe; 12. First through hole; 13. Second discharge pipe; 14. Second through hole; 15. Mounting groove; 16. First cylinder; 17. Baffle; 18. Cover plate;

[0021] 2. Magnetic roller;

[0022] 3. Scraper;

[0023] 4. Guide plate;

[0024] 5. First rotating shaft;

[0025] 6. Second rotating shaft;

[0026] 7. First motor;

[0027] 8. Second motor;

[0028] 9. Screening plate; 91. Protective plate;

[0029] 10. Second cylinder. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] like Figure 1 and 2 As shown in the figure, this application provides a vertical mill discharge screening device, including a feeding pipe 1. Two magnetic rollers 2 and two scrapers 3 are rotatably arranged inside the feeding pipe 1, and two first discharge pipes 11 are connected to the side of the feeding pipe 1. The two magnetic rollers 2 are arranged vertically and alternately, and the vertical projection areas of the two magnetic rollers 2 are tangent or partially intersecting. The scrapers 3 can be rotated to fit against the magnetic rollers 2 and guide magnetic impurities to the first discharge pipes 11.

[0037] During feeding, the material from the vertical mill is conveyed through the feeding pipe 1 and falls onto the magnetic roller 2. Magnetic impurities such as iron parts or iron filings in the material are attracted to the magnetic roller 2. At the same time, the magnetic roller 2 is rotated inward to facilitate the smooth flow of the material while preventing the accumulation of magnetic impurities in certain areas of the magnetic roller 2. When it is necessary to clean the magnetic impurities, the scraper 3 is rotated to fit against the magnetic roller 2, while the magnetic roller 2 is rotated outward. The scraper 3 will scrape off the magnetic impurities attracted to the magnetic roller 2 and guide them to the first discharge pipe 11. Subsequently, the magnetic impurities discharged from the first discharge pipe 11 are collected and cleaned in a unified manner.

[0038] This device can screen out and collect magnetic impurities such as iron parts or iron filings from the material discharged from the vertical mill, preventing magnetic impurities from entering downstream processes and affecting the operation of subsequent processing equipment, thus ensuring normal production. The device uses two staggered magnetic rollers 2 to ensure smooth material flow and that all materials fall onto the magnetic rollers 2 for magnetic adsorption and screening, ensuring full material coverage.

[0039] like Figure 1 and 2 As shown, in this embodiment, the side of the feeding pipe 1 is provided with a first through hole 12 that communicates with the first discharge pipe 11. The scraper 3 can be rotated to close the first through hole 12. When feeding, the scraper 3 is in the position of closing the first through hole 12 to prevent the material from passing through the first through hole 12 and to ensure that the material continues to flow along the feeding pipe 1. When it is necessary to clean magnetic impurities, the scraper 3 will scrape off the magnetic impurities adsorbed on the magnetic roller 2 and guide them to the first through hole 12 and the first discharge pipe 11. The scraper 3 has both guiding and sealing functions, simplifying the structural design.

[0040] like Figure 1 and 2 As shown in this embodiment, a guide plate 4 is fixedly installed inside the feeding pipe 1; the guide plate 4 can guide the material to the surface of the magnetic roller 2, preventing the material from falling directly from the gap between the magnetic roller 2 and the inner walls of both sides of the feeding pipe 1, which would result in insufficient screening, and ensuring that the material is in full contact with the magnetic roller 2.

[0041] like Figure 1 and 2 As shown, in this embodiment, two first rotating shafts 5 and two second rotating shafts 6 are rotatably arranged inside the feeding pipe 1 via bearings. The magnetic roller 2 is fixedly sleeved on the first rotating shaft 5, and the scraper 3 is fixedly sleeved on the second rotating shaft 6. Two first motors 7 and two second motors 8 are arranged outside the feeding pipe 1. The first motor 7 drives the first rotating shaft 5 to rotate, and the second motor 8 drives the second rotating shaft 6 to rotate.

[0042] When in use, the first motor 7 is turned on to drive the first rotating shaft 5 to rotate, the first rotating shaft 5 drives the magnetic roller 2 to rotate, the second motor 8 is turned on to drive the second rotating shaft 6 to rotate, and the second rotating shaft 6 drives the scraper 3 to rotate.

[0043] like Figure 1 and 2 As shown, in this embodiment, a screening plate 9 is provided inside the feeding pipe 1, and the screening plate 9 is located above the magnetic roller 2. When feeding, the material falls onto the screening plate 9 for preliminary screening, separating large impurities, which can reduce the wear of large impurities on the magnetic roller 2 and improve the adsorption efficiency of the magnetic roller 2 for small magnetic impurities.

[0044] like Figure 1 and 2As shown in this embodiment, a second discharge pipe 13 is connected to the side of the feeding pipe 1, and the screening plate 9 is inclined. When it is necessary to clean up large impurities, the large impurities intercepted by the screening plate 9 will flow along the screening plate 9 to the second discharge pipe 13 for discharge, thereby realizing the rapid separation of large impurities from qualified materials, preventing the accumulation of large impurities and reducing the risk of blockage in downstream equipment.

[0045] like Figure 1 and 2 As shown, in this embodiment, the side of the feeding pipe 1 is provided with a second through hole 14 connected to the second discharge pipe 13 and an installation groove 15 connected to the second through hole 14. A first cylinder 16 is fixedly installed in the installation groove 15, and a baffle 17 is slidably installed in the installation groove 15. The first cylinder 16 can drive the baffle 17 to move to close the second through hole 14.

[0046] During feeding, the baffle 17 is in the position of closing the second through hole 14 to prevent the material from passing through the second through hole 14, ensuring that the material continues to flow along the feeding pipe 1 and preventing material leakage during the feeding period; when it is necessary to clean up large impurities, the first cylinder 16 is opened to drive the baffle 17 to retract into the mounting groove 15 and open the second through hole 14. The large impurities intercepted by the screening plate 9 will pass through the second through hole 14 along the screening plate 9 and be discharged from the second discharge pipe 13. Then, the large impurities discharged from the second discharge pipe 13 are collected and cleaned in a unified manner.

[0047] like Figure 1 and 2 As shown, in this embodiment, a second cylinder 10 is hinged to the inner wall of the feeding pipe 1. The piston rod end of the second cylinder 10 is hinged to the lower end of the screening plate 9. When it is necessary to clean large impurities, the second cylinder 10 is turned on to drive the screening plate 9 to rotate, increasing the tilt angle of the screening plate 9, so that the large impurities intercepted by the screening plate 9 will be discharged.

[0048] like Figure 1 and 2 As shown, in this embodiment, a protective plate 91 is fixedly provided at the lower end of the screening plate 9; the protective plate 91 can prevent materials from hitting the second cylinder 10 and protect the second cylinder 10 from damage.

[0049] like Figure 1 and 2 As shown, in this embodiment, a cover plate 18 is provided on both the first discharge pipe 11 and the second discharge pipe 13; the cover plate 18 can prevent material leakage and improve the sealing performance of the device.

[0050] The vertical mill discharge screening device achieves precise separation of large impurities and magnetic impurities through a multi-stage screening design of screening plate 9 for pre-screening, magnetic roller 2 for adsorption, and scraper 3 for cleaning, effectively improving the stability of equipment operation and reducing maintenance costs.

[0051] Working principle: The vertical mill discharge screening device provided in this application, when feeding, the material discharged from the vertical mill is conveyed through the feeding pipe 1, and the material falls onto the screening plate 9 for preliminary screening to separate large impurities. Then the material falls onto the magnetic roller 2, and the magnetic impurities such as iron parts or iron filings in the material will be attracted onto the magnetic roller 2. At the same time, the first motor 7 is turned on to drive the first rotating shaft 5 to rotate. The first rotating shaft 5 drives the magnetic roller 2 to rotate inward, which drives the material to fall smoothly while preventing magnetic impurities from accumulating in local positions of the magnetic roller 2.

[0052] When it is necessary to clean impurities, the second motor 8 is turned on to drive the second rotating shaft 6 to rotate. The second rotating shaft 6 drives the scraper 3 to rotate until it is in contact with the magnetic roller 2. At the same time, the magnetic roller 2 is rotated outward. The scraper 3 will scrape off the magnetic impurities adsorbed on the magnetic roller 2 and guide them to the first through hole 12 and the first discharge pipe 11. Then, the magnetic impurities discharged from the first discharge pipe 11 are collected and cleaned. At the same time, the second cylinder 10 is turned on to drive the screening plate 9 to rotate, increasing the tilt angle of the screening plate 9. The large impurities intercepted by the screening plate 9 will pass through the second through hole 14 along the screening plate 9 and be discharged from the second discharge pipe 13. Then, the large impurities discharged from the second discharge pipe 13 are collected and cleaned.

[0053] 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 vertical mill discharge screening device, characterized in that: The device includes a feeding pipe (1), in which two magnetic rollers (2) and two scrapers (3) are rotatably arranged. Two first discharge pipes (11) are connected to the side of the feeding pipe (1). The two magnetic rollers (2) are arranged vertically and alternately, and the vertical projection areas of the two magnetic rollers (2) are tangent or partially intersecting. The scraper (3) can be rotated to fit against the magnetic rollers (2) and guide magnetic impurities to the first discharge pipes (11).

2. The vertical mill discharge screening device according to claim 1, characterized in that: The side of the feeding pipe (1) is provided with a first through hole (12) that communicates with the first discharge pipe (11), and the scraper (3) can be rotated to close the first through hole (12).

3. The vertical mill discharge screening device according to claim 1, characterized in that: A guide plate (4) is fixedly installed inside the feeding pipe (1).

4. The vertical mill discharge screening device according to claim 1, characterized in that: The feeding pipe (1) is rotatably equipped with two first rotating shafts (5) and two second rotating shafts (6) through bearings. The magnetic roller (2) is fixedly sleeved on the first rotating shaft (5), and the scraper (3) is fixedly sleeved on the second rotating shaft (6). The feeding pipe (1) is equipped with two first motors (7) and two second motors (8). The first motors (7) drive the first rotating shaft (5) to rotate, and the second motors (8) drive the second rotating shaft (6) to rotate.

5. The vertical mill discharge screening device according to claim 1, characterized in that: A screening plate (9) is provided inside the feeding pipe (1), and the screening plate (9) is located above the magnetic roller (2).

6. The vertical mill discharge screening device according to claim 5, characterized in that: The side of the feeding pipe (1) is connected to a second discharge pipe (13), and the screening plate (9) is inclined.

7. The vertical mill discharge screening device according to claim 6, characterized in that: The side of the feeding pipe (1) is provided with a second through hole (14) communicating with the second discharge pipe (13) and an installation groove (15) communicating with the second through hole (14). A first cylinder (16) is fixedly installed in the installation groove (15), and a baffle (17) is slidably installed in the installation groove (15). The first cylinder (16) can drive the baffle (17) to move to close the second through hole (14).

8. The vertical mill discharge screening device according to claim 5, characterized in that: The inner wall of the feeding pipe (1) is hinged with a second cylinder (10), and the piston rod end of the second cylinder (10) is hinged to the lower end of the screening plate (9).

9. The vertical mill discharge screening device according to claim 8, characterized in that: A protective plate (91) is fixedly installed at the lower end of the screening plate (9).

10. The vertical mill discharge screening device according to claim 6, characterized in that: Cover plates (18) are provided on both the first discharge pipe (11) and the second discharge pipe (13).

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