Scraping mechanism of vertical mill device for superfine slag powder

Abstract

The utility model discloses a scraping mechanism of a vertical mill device for superfine slag powder, which comprises a vertical mill shell, a millstone and a plurality of milling rollers matched with the millstone, a scraping plate component matched with the millstone for use is arranged above a position between two adjacent milling rollers, and the scraping plate component comprises a lifter and a plurality of scraping arc plates. A transverse translation assembly is installed above the lifter, a driver connected with the transverse translation assembly is installed in the center of the upper portion of the grinding disc, a buffering support is installed at the lower end of the lifter, and a plurality of scraping arc plates are installed below the buffering support and arranged in the radial direction of the grinding disc at equal intervals. And the distances between the scraping arc plates and the surface of the grinding disc are gradually reduced from the edge to the center of the grinding disc. According to the utility model, the use number of drivers is reduced, the energy consumption of operation is low, and the operation cost can be effectively saved; and the scraping efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid waste resource processing and treatment, and in particular relates to a scraping mechanism of a vertical mill device for slag micropowder. Background Art

[0002] Slag powder is a by-product with good cement performance and high strength. It is mainly added to cement or concrete as a new admixture for high-performance concrete. At present, the process flow of slag powder production line mainly includes feeding, conveying, drying, grinding, storage and other processes. The vertical mill is the key equipment in the production process of slag powder. The existing vertical mill drives the grinding disc to rotate through the motor and reducer. The slag powder falls into the center of the grinding disc through the feed pipe, and the hot air enters from the bottom. As the grinding disc rotates, the slag powder moves to the edge of the grinding disc under the action of centrifugal force, and is crushed after being rolled by the grinding roller at the edge of the grinding disc. The finished product after grinding is carried by the hot air flow. After separation by the separator above the grinding disc, the coarse material falls into the grinding disc for further grinding, and the qualified fine material is discharged into the powder collection system with the air flow. During the use of the above-mentioned vertical mill, it was found that when the grinding rollers crushed the slag powder on the grinding track of the grinding disc, the divided materials were easily attached to the grinding track of the grinding disc, and the materials could not be concentrated in the middle position, affecting the grinding effect. It was necessary to use a scraper mechanism to scrape the powder adhered to the grinding track to improve the sealing efficiency. In the existing technology, the scraper mechanism used in the vertical mill is a translational scraper plate provided on the side wall of the vertical mill cylinder between the two grinding rollers. The translation mechanism is used to move the scraper plate along the edge of the grinding disc toward the center to scrape the powder adhered to the grinding disc. This structure has the following shortcomings during use: each group of translation mechanism groups requires a group of power devices to drive, the structure of the device is complicated, and it needs to consume a lot of power equipment, with high investment cost and energy consumption. At the same time, since the grinding track of the grinding disc is an arc structure, it is difficult to achieve efficient scraping of adhered divided materials by using a translation mechanism to drive the scraper to move in a straight line. Therefore, it is an objective requirement to develop a scraping mechanism for a vertical mill for slag micropowder which has a reasonable structure, low cost, low energy consumption, and can achieve efficient scraping. Summary of the invention

[0003] The utility model aims to provide a scraping mechanism of a vertical mill for slag micro-powder which has a reasonable structure, low cost, low energy consumption and can realize efficient scraping.

[0004] The purpose of the utility model is achieved in this way, including a vertical mill shell, a grinding disc and a plurality of grinding rollers matching the grinding disc, a scraper assembly used in conjunction with the grinding disc is arranged above between two adjacent grinding rollers, the scraper assembly includes a lifter and a plurality of scraper arc plates, a lateral translation assembly is installed above the lifter, a driver connected to the lateral translation assembly is installed at the center above the grinding disc, a buffer support is installed at the lower end of the lifter, a plurality of scraper arc plates are installed below the buffer support, and the plurality of scraper arc plates are arranged at equal intervals along the radial direction of the grinding disc, and the distance between the plurality of scraper arc plates and the surface of the grinding disc gradually decreases from the edge to the center of the grinding disc.

[0005] Compared with the existing technology, the advantages of the utility model are: first, one driver can be used to drive multiple lateral translation components to move in parallel, which reduces the number of drivers used, has low energy consumption, and can effectively save operating costs; second, a lifter is used to drive multiple scraper arc plates to clean the divided materials on the grinding disc. On the one hand, the lifter drives the multiple scraper arc plates to move up and down, and can adjust the distance between the scraper arc plates and the grinding disc surface in time to meet the scraping needs of powders of different thicknesses on the grinding disc surface and improve adaptability. On the other hand, the lateral translation component drives multiple scraper arc plates to scrape the divided materials on the grinding disc surface at the same time. Multiple scraper arc plates can achieve efficient scraping effect at one time, which can effectively improve the scraping efficiency. When used in conjunction with the grinding disc and the grinding roller, it can effectively improve the grinding effect of slag micropowder. It has the advantages of reasonable structural design, easy use, and significant use effect, and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a main schematic diagram of the utility model;

[0007] Figure 2 It is a top sectional view of the utility model;

[0008] Figure 3 for Figure 1 The structural diagram of part A in the figure;

[0009] Figure 4 It is a schematic diagram of the connection of the auxiliary scraper 7 of the scraper arc plate 5;

[0010] In the figure: 1-vertical mill housing, 2-grinding disc, 3-grinding roller, 4-lifter, 5-scraper arc plate, 6-buffer support, 7-auxiliary scraper, 8-brush, 9-transmission screw, 10-movable sleeve, 17-limiting plate, 11-dustproof housing, 12-driving motor, 13-active bevel gear, 14-driven bevel gear, 15-intermediate shaft. DETAILED DESCRIPTION

[0011] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention belong to the protection scope of the present invention.

[0012] like Figures 1 to 4 As shown, the utility model includes a vertical mill shell 1, a grinding disc 2 and a plurality of grinding rollers 3 matched with the grinding disc 2. The structures of the vertical mill shell 1, the grinding disc 2 and the grinding rollers 3 adopt the existing technology. A scraper assembly used in conjunction with the grinding disc 2 is arranged above two adjacent grinding rollers 3. The scraper assembly includes a lifter 4 and a plurality of scraper arc plates 5. The lifter 4 can control the lifting and lowering of the plurality of scraper arc plates 5. The curvature of the bottom surface of the scraper arc plate 5 matches the curvature of the grinding track of the grinding disc 2. A lateral translation assembly is installed above the lifter 4. A driver connected to the lateral translation assembly is installed at the center above the grinding disc 2. The driver drives The lateral translation component moves laterally and parallely, and a buffer support 6 is installed at the lower end of the lifter 4, and multiple scraper arc plates 5 are installed below the buffer support 6. When the multiple scraper arc plates 5 scrape the surface of the grinding disc 2, the buffer support 6 has the function of buffering resistance, thereby reducing the phenomenon that the scraper arc plates 5 cause excessive scratches on the surface of the grinding disc, and the multiple scraper arc plates 5 are arranged at equal intervals along the radial direction of the grinding disc 2, and the distance between the multiple scraper arc plates 5 and the surface of the grinding disc 2 gradually decreases from the edge to the center of the grinding disc 2, which is convenient for matching with the grinding track on the surface of the grinding disc, and can efficiently carry out scraping processing on the adhered materials on the surface of multiple grinding discs.

[0013] The method of using the utility model is as follows: when the grinding roller 3 and the grinding disc 2 are grinding the slag powder again, if there is a lot of powder adhered to the surface of the grinding disc 2, the driver starts to work, controls the lateral translation assembly to drive the lifter, the buffer support 6 and the multiple scraper arc plates 5 to move synchronously, and when they move to the top of the grinding path of the grinding disc 2, the driver stops working, and the lifter controls the buffer support 6 and the multiple scraper arc plates 5 to descend, and when they descend to the point where the multiple scraper arc plates 5 contact the grinding path surface of the grinding disc 2, the driver starts again, and the driver controls the lateral translation assembly to move along the center direction of the grinding disc 2, and during the movement of the lateral translation assembly, it drives the lifter and the buffer support 6 and multiple scraper arc plates 5, during the movement of the multiple scraper arc plates 5, the powder adhered to the grinding path can be scraped off at one time. At this time, the lifter drives the buffer support 6 and the multiple scraper arc plates 5 to rise and return to their original positions. The scraped powder remains in the grinding path for further grinding, and the driver drives the lateral translation component to move the lifter, buffer support 6 and the multiple scraper arc plates 5 to above the grinding path of the grinding disc 2. When scraping is needed, scraping can be carried out directly. The scraping mechanism can achieve efficient scraping effect at one time, can effectively improve the scraping efficiency, and can be used in conjunction with the grinding disc and the grinding roller to effectively improve the grinding effect of slag micropowder.

[0014] Furthermore, in order to improve the scraping effect of the scraper arc plate 5, an auxiliary scraper plate 7 is detachably installed on the side of each scraper arc plate 5, and a brush 8 is installed at the bottom of each auxiliary scraper plate 7. The bottom surface of the brush 8 is also set to a structure consistent with the curvature of the grinding track of the grinding wheel 2. During the scraping process of each scraper arc plate 5, its brush 8 can also assist the scraper arc plate 5 to scrape the grinding track in the grinding wheel 2. The double scraping method can effectively improve the scraping effect. Preferably, in order to facilitate the replacement or installation of the brush 8, a plurality of rows of adjustment holes are evenly spaced up and down on one side of the scraper arc plate 5, and a row of positioning holes matching the adjustment holes are processed on the auxiliary scraper plate 7. The positioning holes and the adjustment holes are connected and fixed by fastening screws. The screw connection method is convenient for disassembly.

[0015] Furthermore, the structure of the lateral translation assembly can be in the form of a pneumatic cylinder or a hydraulic cylinder. Preferably, the lateral translation assembly includes a transmission screw 9 and a movable sleeve 10. The inner wall of the movable sleeve 10 is processed with an internal thread that matches the transmission screw 9. One end of the movable sleeve 10 is threadedly connected to the transmission screw 9, and the other end is installed with a limiting plate 17. The driver drives the transmission screw 9 to rotate. During the rotation of the transmission screw 9, the movable sleeve 10 can move on the transmission screw 9.

[0016] Furthermore, the driver includes a dustproof housing 11, a driving motor 21, a driving bevel gear 13 and a driven bevel gear 14. The driving motor 21 is a structure used in the prior art and can be directly purchased as a finished product. The dustproof housing 11 is fixedly connected to the inner wall of the vertical mill housing 1 through a support rod. The driving motor 21 is installed in the dustproof housing 11, and the driving bevel gear 13 is installed on the output shaft of the driving motor 21. A plurality of intermediate rotating shafts 15 connected to the lateral translation assembly are rotatably installed on the dustproof housing 11. The driven bevel gear 14 is installed on the intermediate rotating shaft 15 located inside the dustproof housing 11. The driving bevel gear 13 and the driven bevel gear 14 are meshed with each other. When in use, the driving motor 21 drives the driving bevel gear 13 to rotate. During the rotation process, the driving bevel gear 13 can drive multiple driven bevel gears 14 to rotate synchronously, and then can drive multiple lateral translation assemblies to translate. In this way, the structure that a translation assembly needs to be driven by a power device can be reduced, which can effectively reduce the energy consumption of the device and reduce the operating cost.

[0017] Furthermore, in order to increase the service life of the scraper arc plate 5 and prevent the scraper arc plate 5 from being deformed or excessively scratched on the grinding track assembly of the grinding wheel 2, the buffer support 6 includes an upper fixed plate and a lower fixed plate, at least two upper short tubes are installed on the bottom surface of the upper fixed plate, and a lower short tube corresponding to the upper short tube is installed on the top surface of the lower fixed plate, and a buffer spring is installed between the upper short tube and the lower short tube. The buffer spring is arranged between the upper short tube and the lower short tube, which can prevent the buffer spring from being deformed and increase the service life.

[0018] Furthermore, the bottom surface of the scraper arc plate 5 is arranged to be a gradually inclined downward slope structure from the edge to the center of the grinding disc 2. The bottom surface of the scraper arc plate 5 is arranged to be an inclined surface structure, which can improve the scraping effect on the grinding disc 2.

[0019] Preferably, according to the use requirements, the lifter 4 is an electric push rod or a pneumatic cylinder. The electric push rod or the pneumatic cylinder is a structure used in the prior art, and the finished product can be directly purchased on the market according to the use requirements.

Claims

1. A scraping mechanism of a vertical mill for slag fine powder, comprising a vertical mill housing (1), a grinding disc (2) and a plurality of grinding rollers (3) matching the grinding disc (2), characterized in that: A scraper assembly for use with a grinding disc (2) is arranged above two adjacent grinding rollers (3), the scraper assembly comprising a lifter (4) and a plurality of scraper arc plates (5), a lateral translation assembly is installed above the lifter (4), a driver connected to the lateral translation assembly is installed at the center above the grinding disc (2), a buffer support (6) is installed at the lower end of the lifter (4), a plurality of scraper arc plates (5) are installed below the buffer support (6), and the plurality of scraper arc plates (5) are arranged at equal intervals along the radial direction of the grinding disc (2), and the distance between the plurality of scraper arc plates (5) and the surface of the grinding disc (2) gradually decreases from the edge to the center of the grinding disc (2).

2. The scraping mechanism of the vertical mill for slag fine powder according to claim 1 is characterized by: An auxiliary scraper (7) is detachably mounted on the side of each scraper arc plate (5), and a brush (8) is mounted on the bottom of each auxiliary scraper (7).

3. The scraping mechanism of the vertical mill for slag fine powder according to claim 2 is characterized by: A plurality of rows of adjustment holes are installed at equal intervals on one side of the scraper arc plate (5), and a row of positioning holes matching the adjustment holes are processed on the auxiliary scraper plate (7), and the positioning holes are connected and fixed to the adjustment holes by fastening screws.

4. The scraping mechanism of the vertical mill for slag fine powder according to claim 1 is characterized in that: The lateral translation assembly comprises a transmission screw (9) and a movable sleeve (10). An internal thread matching the transmission screw (9) is processed on the inner wall of the movable sleeve (10). One end of the movable sleeve (10) is threadedly connected to the transmission screw (9), and the other end is installed with a limit plate (17).

5. The scraping mechanism of the vertical mill for slag fine powder according to claim 1 is characterized by: The driver comprises a dustproof housing (11), a driving motor (21), a driving bevel gear (13) and a driven bevel gear (14); the dustproof housing (11) is fixedly connected to the inner wall of the vertical mill housing (1) via a support rod; the driving motor (21) is mounted in the dustproof housing (11); the driving bevel gear (13) is mounted on the output shaft of the driving motor (21); a plurality of intermediate rotating shafts (15) connected to a lateral translation assembly are rotatably mounted on the dustproof housing (11); the driven bevel gear (14) is mounted on the intermediate rotating shaft (15) located inside the dustproof housing (11); and the driving bevel gear (13) and the driven bevel gear (14) are meshed with each other.

6. The scraping mechanism of the vertical mill for slag fine powder according to claim 1 is characterized by: The buffer support (6) comprises an upper fixing plate and a lower fixing plate, at least two upper short tubes are installed on the bottom surface of the upper fixing plate, and lower short tubes corresponding to the upper short tubes are installed on the top surface of the lower fixing plate, and a buffer spring is installed between the upper short tubes and the lower short tubes.

7. The scraping mechanism of the vertical mill for slag fine powder according to claim 1 is characterized by: The bottom surface of the scraper arc plate (5) is arranged to be a gradually inclined downwards inclined surface structure from the edge to the center of the grinding disc (2).

8. The scraping mechanism of the vertical mill for slag fine powder according to claim 1 is characterized by: The lifter (4) is an electric push rod or a pneumatic cylinder.

Images