A central cone material remover for a vertical roller mill and the vertical roller mill itself.

Abstract

This utility model provides a central cone material remover for a vertical roller mill and a vertical roller mill itself. The central cone material remover includes a mounting frame and a scraper. The mounting frame has two mounting portions at both ends for fixing it within the vertical roller mill, and the scraper is fixedly connected to the middle of the mounting frame. By applying this invention to a vertical roller mill, when the mill is working, the hopper in the middle of the casing continuously feeds material towards the center of the grinding disc. As the grinding disc rotates, the material located at the center of the grinding disc is scraped and moved by the mounting frame and the scraper, thereby preventing the formation of a central material pile. This facilitates maintenance personnel in inspecting the interior of the vertical roller mill and prevents the formation of a central material pile, ensuring that all material is ground completely.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, specifically to a central cone material remover for a vertical roller mill and a vertical roller mill. Background Technology

[0002] Vertical roller mills are high-efficiency and energy-saving grinding equipment widely used in industries such as cement, coal, metallurgy, and power. Their high efficiency, energy saving, and environmental friendliness make them an important piece of equipment in modern grinding processes. Their working principle involves placing the material to be ground onto the grinding disc via a hopper. A conical grinding roller is rotatably connected to the housing and rests against the upper surface of the grinding disc. The rotation of the grinding disc drives the grinding roller to rotate, creating a relative rotation that crushes and grinds the material on the disc. The ground material is then blown upwards by nozzles on the outer edge of the grinding disc and transported by pneumatic conveying to a storage mechanism for storage.

[0003] In existing vertical roller mills, a material accumulation cone easily forms in the center of the grinding disc, below the feed hopper, because the grinding rollers cannot reach this area. As the machine runs for a long time, the accumulation cone is compacted under the impact of the material. During subsequent maintenance, the accumulation cone occupies internal space, requiring cleaning before each maintenance operation. This cumbersome process hinders maintenance engineers from effectively repairing the vertical roller mill. Furthermore, without manual intervention, the accumulated material remains at the center of the grinding disc and cannot be utilized effectively.

[0004] In summary, there is an urgent need for a vertical roller mill center cone material remover and a vertical roller mill to solve or at least partially solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this utility model is to provide a central cone material remover for vertical roller mills, aiming to solve the problem that existing vertical roller mills will accumulate material in the center of the mill during use, making maintenance difficult. The specific technical solution is as follows:

[0006] A central cone material remover for a vertical roller mill includes a mounting frame and a scraper. The mounting frame has two mounting parts at both ends for fixing in the vertical roller mill, and the scraper is fixedly connected to the middle of the mounting frame.

[0007] Furthermore, the mounting bracket includes a mounting rod, a mounting base, and fasteners. A scraper is fixedly connected to the middle of the mounting rod. Two mounting bases are arranged, and the two mounting bases are detachably connected to both ends of the mounting rod by fasteners. A first connecting hole is provided on the mounting base, and a second connecting hole is provided on the mounting rod. The fasteners are arranged to pass through both the first connecting hole and the second connecting hole to securely connect the mounting base and the mounting bracket.

[0008] Furthermore, a limiting groove is provided on the mounting base, and the mounting rod is embedded in the limiting groove.

[0009] Furthermore, the first connecting hole is an elongated hole, which is arranged along the length of the mounting rod.

[0010] Furthermore, the scraper includes a lower scraper, which is fixedly connected to the bottom of the mounting rod and extends downward along the height direction.

[0011] Furthermore, the scraper also includes an upper scraper, which is fixedly connected to the top of the mounting rod and extends upward along the height direction.

[0012] Furthermore, it also includes wear-resistant components, which are arranged at the lower part of the mounting bracket, and two wear-resistant components are provided, with the two wear-resistant components respectively located at both ends below the mounting rod.

[0013] Furthermore, the wear-resistant component includes a fixing plate and a wear-resistant plate. The fixing plate is fixedly connected to the bottom of the mounting bracket, and the wear-resistant plate is fixed to the bottom of the fixing plate with the wear-resistant plate facing downwards.

[0014] Furthermore, the wear-resistant plates are arranged in an arc shape, with both ends of the wear-resistant plates welded and fixed to the fixed plate, and the middle of the wear-resistant plates arching downwards.

[0015] The application of the technical solution of this utility model has the following beneficial effects:

[0016] This vertical roller mill center cone material remover is used in vertical roller mills. When the vertical roller mill is working, the hopper in the middle of the casing continuously feeds material towards the center of the grinding disc. As the grinding disc rotates, the material located in the center of the grinding disc is scraped and moved by the mounting frame and scraper, thus preventing the formation of material accumulation in the center. On the one hand, it facilitates maintenance personnel to inspect the inside of the vertical roller mill; on the other hand, it prevents the formation of material accumulation in the center, ensuring that all material can be ground completely.

[0017] On the other hand, this application also provides a vertical roller mill, including a housing, a grinding disc, a feed hopper, a nozzle ring, and a grinding roller. The grinding disc is rotatably connected inside the housing, the feed hopper is arranged on the housing and above the center of the grinding disc, the nozzle ring is arranged around the outer periphery of the grinding disc and is located between the grinding disc and the housing, the grinding roller is rotatably connected to the housing, and the roller surface of the grinding roller abuts against the upper surface of the grinding disc. It also includes the aforementioned vertical roller mill central cone material remover, which is arranged inside the housing, and the two ends of the mounting bracket are fixedly connected to the inner wall of the housing. The scraper is arranged above the grinding disc and below the feed hopper. The vertical roller mill central cone material remover is staggered with the grinding roller.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. These will be described below with reference to... Figures 1-6 The present invention will be described in further detail below. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the internal structure of a central cone material remover for a vertical roller mill, as described in Embodiment 1 of this utility model.

[0021] Figure 2 This is a schematic diagram of the overall structure of a vertical roller mill center cone material remover according to Embodiment 1 of this utility model;

[0022] Figure 3 This is an exploded view of a vertical roller mill center cone material remover according to Embodiment 1 of this utility model;

[0023] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 This is one of the internal structural schematic diagrams of a vertical roller mill according to Embodiment 2 of this utility model;

[0025] Figure 6 This is the second schematic diagram of the internal structure of a vertical roller mill according to Embodiment 2 of this utility model.

[0026] The components include: 1. Mounting bracket; 11. Mounting rod; 111. Second connecting hole; 12. Mounting base; 121. First connecting hole; 122. Limiting groove; 13. Fastener; 2. Scraper; 21. Lower scraper; 22. Upper scraper; 3. Wear-resistant component; 31. Fixing plate; 32. Wear-resistant plate; 4. Housing; 5. Grinding disc; 6. Feed hopper; 7. Nozzle ring; 8. Grinding roller; 9. Vertical roller mill center cone material remover. Detailed Implementation

[0027] To facilitate understanding of this invention, a more comprehensive description is provided below, along with preferred embodiments. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] Example 1:

[0030] See Figures 1-4 This embodiment provides a central cone material remover for a vertical roller mill, including a mounting frame 1 and a scraper 2. The mounting frame 1 has two mounting parts at both ends for fixing in the vertical roller mill, and the scraper 2 is fixedly connected to the middle of the mounting frame 1.

[0031] Specifically, the central cone material remover for the vertical roller mill is installed inside the casing 4 of the vertical roller mill via mounting parts at both ends of the mounting frame 1. The mounting parts at both ends of the mounting frame 1 are fixedly connected to the inner wall of the casing 4 by welding or by detachable connection. When the vertical roller mill is working, the hopper in the middle of the casing 4 continuously feeds material towards the center of the grinding disc 5. As the grinding disc 5 rotates, the material located at the center of the grinding disc 5 is scraped and moved by the mounting frame 1 and the scraper 2, thereby preventing the formation of a central material pile. This facilitates maintenance personnel in inspecting the interior of the vertical roller mill and prevents the formation of a central material pile, ensuring that all material is ground completely.

[0032] It is known that when the mounting base 12 is fixedly connected to the housing 4 by welding, it is secure and not easy to loosen, but it cannot be disassembled, making maintenance inconvenient. However, when the mounting base 12 is installed by a detachable connection, it is easy to disassemble and maintain, and the internal space of the housing 4 is larger after disassembly, making it easier to repair the inside of the housing 4.

[0033] In a preferred embodiment, the mounting bracket 1 includes a mounting rod 11, a mounting base 12, and a fastener 13. The scraper 2 is fixedly connected to the middle of the mounting rod 11. Two mounting bases 12 are arranged, and the two mounting bases 12 are detachably connected to the two ends of the mounting rod 11 by fasteners 13. The mounting base 12 is provided with a first connecting hole 121, and the mounting rod 11 is provided with a second connecting hole 111. The fastener 13 is arranged to pass through both the first connecting hole 121 and the second connecting hole 111 to securely connect the mounting base 12 and the mounting bracket 1.

[0034] It is understood that the two mounting seats 12 are fixedly connected to both sides inside the housing 4 by welding, and the mounting rod 11 is detachably connected to the two mounting seats 12 by fasteners 13. Specifically, in this embodiment, the fastener 13 is a bolt; in other embodiments of this application, the fastener 13 can also be a screw or other component or structure capable of achieving a fastening connection. When it is necessary to perform maintenance on the inside of the vertical roller mill, the mounting rod 11 and the scraper 2 can be removed, thereby freeing up more working space inside the vertical roller mill and facilitating maintenance.

[0035] In a preferred embodiment, the mounting base 12 is provided with a limiting groove 122, with the opening of the limiting groove 122 facing upwards, so that the mounting rod 11 can be inserted into the limiting groove 122 from top to bottom for installation. The mounting rod 11 is embedded in the limiting groove 122, and an abutment platform is provided at the bottom of the limiting groove 122. When the mounting rod 11 is installed into the limiting groove 122, the lower end of the mounting rod 11 abuts against the upper surface of the abutment platform for positioning, and is subsequently installed.

[0036] It is understood that the mounting rod 11 is installed in the limiting groove 122 by means of the limiting groove 122, which facilitates the installation of the mounting rod 11. Of course, in some other embodiments of this application, the limiting groove 122 can also be arranged laterally, and the mounting rod 11 is inserted into the limiting groove 122 from the side for installation.

[0037] In a preferred embodiment, the first connecting hole 121 is an elongated hole, which is arranged along the length of the mounting rod 11.

[0038] It is known that when the mounting base 12 is welded to the inner wall of the housing 4, there may be dimensional errors. By setting the first connecting hole 121 as an elongated hole, the elongated hole can make up for the dimensional errors in the welding process in time, so that the welded mounting base 12 can be smoothly connected to the mounting rod 11 and fastened by the fastener 13.

[0039] In a preferred embodiment, the scraper 2 includes a lower scraper 21, which is fixedly connected to the bottom of the mounting rod 11 and extends downward in the height direction. The scraper 2 also includes an upper scraper 22, which is fixedly connected to the top of the mounting rod 11 and extends upward in the height direction. Specifically, the lower scraper 21 is arranged in the shape of a rectangular plate, with the lower end of the rectangular plate close to the grinding disc 5; the upper scraper 22 is arranged in the shape of a triangle, with the base of the triangle fixedly connected to the mounting rod 11. The upper scraper 22 can be fixedly connected to the mounting rod 11 by welding or detachably connected to the mounting rod 11 by bolts.

[0040] It can be understood that the lower scraper 21 scrapes the accumulated material on the grinding disc 5, causing the material on the grinding disc 5 to move towards the grinding roller 8, and is ground into powder under the rolling action of the grinding roller 8. The upper scraper 22 is used to divert the material in the feed hopper 6, so that the material in the feed hopper 6 can be diverted to both sides of the upper scraper 22, preventing the material from accumulating on one side.

[0041] In a preferred embodiment, the device further includes a wear-resistant component 3, which is arranged at the lower part of the mounting bracket 1. Two wear-resistant components 3 are provided, and the two wear-resistant components 3 are respectively arranged at both ends below the mounting rod 11.

[0042] It is known that during the operation of the vertical roller mill, the nozzle ring 7 arranged on the outer side of the grinding disc 5 faces the jet airflow, blowing the ground powdery material into the air and conveying it to the collection device for collection. However, incompletely ground material will also move upwards under the action of the jet airflow from the nozzle ring 7 and hit the mounting rod 11, causing severe wear and damage to the corresponding position of the mounting rod 11 and the nozzle ring 7. By setting up the wear-resistant component 3, when the nozzle ring 7 jets air upwards and carries material particles upwards, the particles impact the wear-resistant component 3, preventing the material particles from causing wear on the mounting rod 11 and extending the service life of the mounting rod 11.

[0043] In a preferred embodiment, the wear-resistant component 3 includes a fixing plate 31 and a wear-resistant plate 32. The fixing plate 31 is fixedly connected to the bottom of the mounting bracket 1, and the wear-resistant plate 32 is fixed to the bottom of the fixing plate 31, with the wear-resistant plate 32 facing downwards. Specifically, the fixing plate 31 is detachably connected to the mounting rod 11 by bolts.

[0044] It is understood that the fixing plate 31 serves a fixing function, while the wear-resistant plate 32 is arranged downwards and provides protection for the fixing plate 31 and the mounting rod 11. The wear-resistant plate 32 is made of manganese steel and has the characteristics of high hardness and good wear resistance.

[0045] In a preferred embodiment, the wear-resistant plate 32 is arranged in an arc shape, with both ends of the wear-resistant plate 32 welded and fixedly connected to the fixing plate 31, and the middle part of the wear-resistant plate 32 arched downward.

[0046] It is understood that by arranging the wear-resistant plate 32 in a downward arched shape, when the nozzle ring 7 sprays air upwards, the downward arched shape has a diversion effect on the sprayed airflow and the carried particles, preventing the airflow and the carried particles from directly impacting and wearing the wear-resistant plate 32, reducing the wear of the wear-resistant plate 32, and improving the service life of the wear-resistant plate 32.

[0047] Example 2:

[0048] Reference Figures 5-6This embodiment provides a vertical roller mill, including a housing 4, a grinding disc 5, a feed hopper 6, a nozzle ring 7, and a grinding roller 8. The grinding disc 5 is rotatably connected inside the housing 4. The feed hopper 6 is arranged on the housing 4 and is located above the center of the grinding disc 5. The nozzle ring 7 is arranged around the outer periphery of the grinding disc 5 and is located between the grinding disc 5 and the housing 4. The grinding roller 8 is rotatably connected to the housing 4, and the roller surface of the grinding roller 8 abuts against the upper surface of the grinding disc 5. The vertical roller mill also includes the aforementioned vertical roller mill central cone material remover 9, which is arranged inside the housing 4. The two ends of the mounting bracket 1 are fixedly connected to the inner wall of the housing 4. The scraper 2 is arranged above the grinding disc 5 and below the feed hopper 6. The vertical roller mill central cone material remover 9 and the grinding roller 8 are staggered.

[0049] It is known that the feed hopper 6 feeds material into the housing 4 and places the material on the grinding disc 5. As the grinding disc 5 rotates, the material accumulated on the grinding disc 5 moves towards the outer periphery of the grinding disc 5 under the action of the mounting rod 11 and the scraper 2, and moves to the space between the grinding disc 5 and the grinding roller 8. As the grinding disc 5 continues to roll, the material is crushed by the grinding roller 8 and the grinding disc 5. Under the action of the airflow sprayed from the nozzle ring 7, the finer particles of the crushed material are carried away by the airflow, while the larger particles remain on the grinding disc 5. As the grinding disc 5 continues to rotate, it is crushed and ground again until it can be carried away by the airflow sprayed from the nozzle ring 7, thus completing the grinding of the material.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A central cone material remover for a vertical roller mill, characterized in that: It includes a mounting frame (1) and a scraper (2). The mounting frame (1) has two mounting parts at both ends for fixing in a vertical roller mill, and the scraper (2) is fixedly connected to the middle of the mounting frame (1).

2. The vertical roller mill center cone material remover according to claim 1, characterized in that: The mounting bracket (1) includes a mounting rod (11), a mounting base (12), and a fastener (13), and the scraper (2) is fixedly connected to the middle part of the mounting rod (11); Two mounting bases (12) are arranged, and the two mounting bases (12) are detachably connected to both ends of the mounting rod (11) by fasteners (13); The mounting base (12) is provided with a first connecting hole (121), the mounting rod (11) is provided with a second connecting hole (111), and the fastener (13) is arranged to pass through both the first connecting hole (121) and the second connecting hole (111) so that the mounting base (12) and the mounting bracket (1) are securely connected.

3. The vertical roller mill center cone material remover according to claim 2, characterized in that: The mounting base (12) is provided with a limiting groove (122), and the mounting rod (11) is embedded in the limiting groove (122).

4. The vertical roller mill center cone material remover according to claim 2, characterized in that: The first connecting hole (121) is an elongated hole, which is arranged along the length of the mounting rod (11).

5. A vertical roller mill center cone material remover according to claim 2, characterized in that: The scraper (2) includes a lower scraper (21), which is fixedly connected to the bottom of the mounting rod (11) and extends downward along the height direction.

6. The vertical roller mill center cone material remover according to claim 5, characterized in that: The scraper (2) also includes an upper scraper (22), which is fixedly connected to the top of the mounting rod (11) and extends upward along the height direction.

7. A vertical roller mill center cone material remover according to any one of claims 2-6, characterized in that: It also includes wear-resistant components (3), which are arranged at the lower part of the mounting bracket (1), and two wear-resistant components (3) are provided, which are respectively arranged at both ends below the mounting rod (11).

8. A vertical roller mill center cone material remover according to claim 7, characterized in that: The wear-resistant component (3) includes a fixing plate (31) and a wear-resistant plate (32). The fixing plate (31) is fixedly connected to the bottom of the mounting bracket (1), and the wear-resistant plate (32) is fixed to the bottom of the fixing plate (31) with the wear-resistant plate (32) facing downward.

9. A vertical roller mill center cone material remover according to claim 8, characterized in that: The wear-resistant plate (32) is arranged in an arc shape, and the two ends of the wear-resistant plate (32) are welded and fixedly connected to the fixing plate (31), and the middle part of the wear-resistant plate (32) is arched downward.

10. A vertical roller mill, comprising a housing (4), a grinding disc (5), a feed hopper (6), a nozzle ring (7), and a grinding roller (8), wherein the grinding disc (5) is rotatably connected inside the housing (4), the feed hopper (6) is arranged on the housing (4) and above the center of the grinding disc (5), the nozzle ring (7) is arranged around the outer periphery of the grinding disc (5) and is located between the grinding disc (5) and the housing (4), and the grinding roller (8) is rotatably connected to the housing (4), the roller surface of the grinding roller (8) abuts against the upper surface of the grinding disc (5), characterized in that: It also includes a vertical roller mill center cone material remover (9) according to any one of claims 1-9, wherein the vertical roller mill center cone material remover (9) is arranged inside the housing (4), and both ends of the mounting bracket (1) are fixedly connected to the inner wall of the housing (4), the scraper (2) is arranged above the grinding disc (5) and below the feed hopper (6), and the vertical roller mill center cone material remover (9) is staggered with the grinding roller (8).

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