Slag micro-powder vertical mill structure with material stabilizer

Abstract

The slag micro-powder vertical mill structure comprises a vertical mill body and a millstone body, two groups of grinding roller assemblies are symmetrically arranged above the millstone body, and grinding grooves matched with the grinding roller assemblies are annularly formed in the top surface of the millstone body; a scraping assembly matched with the vertical mill shell is mounted on the portion, on one side of each grinding roller assembly, of the vertical mill shell, a material stabilizing assembly matched with the grinding groove is arranged between the two grinding roller assemblies, a supporting frame is mounted in the vertical mill body, a lifting mechanism is mounted on the supporting frame, and a mounting plate is mounted below the lifting mechanism; and the material stabilizing assembly is mounted below the mounting plate. The device not only can effectively improve the grinding efficiency and grinding effect of the grinding roller assembly on superfine slag powder, but also can ensure the stability of the grinding roller assembly in the rolling process, and has the advantages of reasonable structure and remarkable use effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid waste resource treatment and processing, and particularly relates to a slag micro-powder vertical mill structure with a material stabilizer. Background Art

[0002] The main components of slag powder are oxides, silicates, etc., which contain a large amount of active silicates, and have good cement properties and high strength. They are mainly added to cement or concrete and used as a new admixture for high-performance concrete. Before being used as an admixture, slag powder needs to undergo special screening, impurity removal, drying, grinding and other processing before it can be used. The vertical mill is the key equipment used in the slag powder grinding process. The existing vertical mill mainly includes grinding rollers, grinding discs, pressurized ventilation devices, vertical mill bodies, and host PLC electronic control systems. The general working principle of the vertical mill is: the grinding disc rotates on the horizontal plane, and the slag powder falls into the middle of the grinding disc through the discharge port of the feed pipe. Under the centrifugal force of the rotating grinding disc, the slag powder is thrown to the edge of the grinding disc and is affected. The rotating rollers crush the large slag powder directly, while the smaller particles accumulate into a pile. The slag powder inside the pile undergoes inter-particle crushing. The external pressurized ventilation device allows air to enter the vertical mill from the air inlet at the lower end of the mill body. The crushed slag powder reaches the edge of the grinding disc and is carried away by the air flow. The heavier slag powder particles fall back onto the grinding disc for further grinding. The slag powder in the air flow is blocked by the upper rotating baffle and returns to the grinding disc for re-grinding. The qualified slag powder leaves the mill with the air flow and is collected by the powder collector. Existing vertical mills have a problem in actual use: the slag powder on the grinding disc will gradually move and accumulate on the grinding roller under the action of centrifugal force. When the slag powder under the grinding roller accumulates to a certain height due to the centrifugal force, it will affect the rolling of the grinding roller, making the grinding roller unstable during the rolling process. Especially when the output is large or the grinding of slag powder with poor grindability, the unstable phenomenon of the grinding roller is particularly obvious. Therefore, it is an objective need to develop a slag powder vertical mill stabilizer and vertical mill structure with a reasonable structure that can not only improve the grinding effect but also ensure the efficient and stable operation of the grinding roller. Summary of the Invention

[0003] The utility model aims to provide a slag micro-powder vertical mill material stabilizer and a vertical mill structure which have a reasonable structure, can improve the grinding effect, and can ensure the efficient and stable operation of the grinding roller.

[0004] The purpose of the present utility model is achieved in this way, including a vertical mill body and a grinding disc body, two groups of grinding roller assemblies are symmetrically arranged above the grinding disc body, and a grinding groove that cooperates with the grinding roller assembly is circumferentially arranged on the top surface of the grinding disc body. A scraping assembly that cooperates with it is installed on the vertical mill body on one side of each group of grinding roller assemblies, and a material stabilizing assembly that cooperates with the grinding groove is arranged between the two groups of grinding roller assemblies. A support frame is installed inside the vertical mill body, and a lifting mechanism is installed on the support frame. A mounting plate is installed below the lifting mechanism, and the material stabilizing assembly is installed below the mounting plate.

[0005] Compared with the existing technology, the advantages of this device are: first, a scraper assembly is set on one side of the grinding roller assembly of this device, and the scraper assembly can timely scrape off the slag powder adhering to the grinding roller assembly, so that the grinding roller assembly can fully contact with the slag powder, thereby improving the grinding effect of the grinding roller assembly; second, the material stabilizing assembly can be fully used in conjunction with the grinding roller assembly, and the material stabilizing assembly can turn over the slag powder ground by the grinding roller assembly, evenly flatten the unevenly accumulated slag powder in the grinding tank, ensure that the slag powder layer entering the bottom of the grinding roller assembly is uniform, and the slag powder is fully filled by the grinding roller assembly. The slag powder is ground evenly to avoid the uneven slag powder layer affecting the unstable operation of the grinding roller assembly or the poor grinding effect. The arrangement of the stabilizing component can effectively improve the grinding efficiency and grinding effect of the grinding roller assembly on the slag powder on the one hand, and ensure the stability of the grinding roller assembly during rolling on the other hand. The lifting mechanism provided in addition can control the rise or fall of the stabilizing component, and then control the distance between the stabilizing component and the grinding trough, to realize the adjustment of the height of the grinding material layer in the grinding trough, and improve the practical performance of the device. It has the advantages of reasonable structure and significant use effect, and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0007] Figure 2 It is a side view schematic diagram of the present utility model;

[0008] Figure 3 This is a top view of the interior of the vertical mill body 1 of the present invention;

[0009] Figure 4 This is a schematic diagram of the connection between the grinding roller assembly 3 and the scraper assembly 5 in the present invention;

[0010] Figure 5 This is a schematic structural diagram of the stabilizing material assembly 6 of the present invention;

[0011] Figure 6 for Figure 5 A magnified schematic diagram of part A;

[0012] In the figure: 1-vertical mill body, 2-grinding disc body, 3-grinding roller assembly, 4-grinding groove, 5-scraper assembly, 51-scraper arc plate, 52-support, 53-fixed rod, 54-slide, 55-roller ring, 56-bump, 57-spring, 6-stabilizing assembly, 61-working box, 62-driving motor, 63-active bevel gear, 64-driven bevel gear, 65-rotating rod, 66-stabilizing roller, 67-fixed tube, 68-feeding plate, 69-plug-in rod, 610-elastic part, 7-support frame, 8-lifting mechanism, 9-mounting plate, 10-grinding seat, 11-guide rod. DETAILED DESCRIPTION

[0013] The present invention will be 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 shall fall within the scope of protection of the present invention.

[0014] like Figures 1 to 6 As shown, the utility model includes a vertical mill body 1 and a grinding disc body 2, two groups of grinding roller assemblies 3 are symmetrically arranged above the grinding disc body 2, and the structures and operating principles of the vertical mill body 1, the grinding disc body 2 and the grinding roller assembly 3 are all structures used in the prior art. A grinding groove 4 that cooperates with the grinding roller assembly 3 is circumferentially arranged on the top surface of the grinding disc body 2, and a scraper assembly 5 that cooperates with it is installed on the vertical mill body 1 on one side of each group of grinding roller assemblies 3. The scraper assembly 5 is arranged on one side of the grinding roller assembly 3. The scraper assembly 5 can scrape the material adhering to the grinding roller assembly during the rotation of the grinding roller assembly 3. The slag powder on 3 is scraped off to ensure the grinding effect of the grinding roller assembly 3. A material stabilizing assembly 6 that cooperates with the grinding trough 4 is provided between the two groups of grinding roller assemblies 3. A support frame 7 is installed inside the vertical mill body 1. A lifting mechanism 8 is installed on the support frame 7. The lifting mechanism 8 can control the rise or fall of the material stabilizing assembly, and then control the distance between the material stabilizing assembly 6 and the grinding trough 4, to achieve the adjustment of the height of the grinding material layer in the grinding trough 4 and improve the practical performance of the device. A mounting plate 9 is installed below the lifting mechanism 8, and the material stabilizing assembly 6 is installed below the mounting plate 9.

[0015] When the device is running, after the slag powder enters the grinding trough 4 through the feeding mechanism, the grinding disc body 2 and the grinding roller assembly 3 rotate. During the rotation, the grinding roller assembly 3 will grind the slag powder in the grinding trough 4. During the rotation of the grinding roller assembly 3, the scraping assembly 5 can timely scrape off the slag powder adhering to the grinding roller assembly 3, so that the grinding roller assembly 3 can fully contact with the slag powder, thereby improving the grinding effect of the grinding roller assembly. After the grinding roller assembly 3 grinds the slag powder, the slag powder in the grinding trough 4 will be unevenly distributed. The slag powder layer in the grinding trough 4 is thin in some places and thick in some places. If the slag powder layer in the grinding trough 4 is not stabilized, the grinding effect of the slag powder will be affected. At this time, the stabilizing assembly 6 is set The slag powder ground by the grinding roller assembly 3 can be turned over, and the unevenly accumulated slag powder in the grinding trough 4 can be evenly flattened to ensure that the slag powder layer entering the bottom of the grinding roller assembly 3 is uniform, so that the slag powder is fully and evenly ground by the grinding roller assembly 3, avoiding the uneven slag powder layer affecting the unstable operation of the grinding roller assembly 3 or the poor grinding effect. The arrangement of the material stabilizing assembly 6 can, on the one hand, effectively improve the grinding efficiency and grinding effect of the grinding roller assembly 3 on the slag powder, and on the other hand, ensure the stability of the grinding roller assembly 3 during rolling. The lifting mechanism 8 provided in addition can control the rise or fall of the material stabilizing assembly 6, and then control the distance between the material stabilizing assembly 6 and the grinding trough 4, so as to adjust the height of the grinding material layer in the grinding trough 4 and improve the practical performance of the device.

[0016] The scraper assembly 5 further comprises a scraper arc plate 51, a support 52 and a fixing rod 53. The support 52 is mounted on the vertical mill body 1 on one side of the grinding roller assembly 3, and the fixing rod 53 is mounted on the support 52. One end of the fixing rod 53 is slidably mounted with a slide 54, and a spring 57 is mounted on the fixing rod 53 on the side away from the grinding roller assembly 3. One end of the scraper arc plate 51 is fixedly connected to the slide 54, and the other end is slidably matched with the grinding roller assembly 3. A rolling ring 55 is mounted on the grinding roller of the grinding roller assembly 3, and a protrusion 56 is mounted on the edge of the rolling ring 55. The protrusion 56 is in sliding contact with the scraper arc plate 51. The side of the scraper arc plate 51 in contact with the grinding roller assembly 3 needs to match the roller surface of the grinding roller assembly 3. The scraper assembly 5 scrapes the material in such a way that, during the rotation of the grinding roller assembly 3, the scraper arc plate 51, under the elastic action of the spring 57, can adhere to the grinding roller assembly 3 every time the grinding roller assembly 3 rotates one circle. The slag powder on the grinding roller assembly 3 is scraped off. At the same time, during the rotation of the grinding roller assembly 3, when the rolling ring 55 and the protrusion 56 rotate synchronously with the grinding roller assembly 3, when the protrusion 56 contacts the scraper arc plate 51, it will squeeze and resist the scraper arc plate 51, thereby moving the scraper arc plate 51 and the slide seat 54 as a whole along the fixed rod 53, and compressing the spring 57 to deform, thereby pushing the scraper arc plate 51 away from the outer surface of the grinding roller assembly 3, and the slag powder scraped off the scraper arc plate 51 will be removed. It quickly falls from between the scraper arc plate 51 and the grinding roller assembly 3 to ensure the normal rotation of the grinding roller assembly 3. After the protrusion 56 slides over the scraper arc plate 51, the scraper arc plate 51 is restored to its original position as a whole through the deformation of the spring 57. The scraper arc plate 51 can be attached to the outer surface of the grinding roller assembly 3 again for scraping, thereby scraping the slag powder adhered to the outer surface of the grinding roller assembly 3, preventing a large amount of slag powder from adhering to the grinding roller assembly 3 and affecting the subsequent grinding operation.

[0017] Furthermore, the material stabilizing assembly 6 includes a working box 61, a driving motor 62 and a material stabilizing roller 66. The driving motor 62 is a structure used in the prior art and can be directly purchased as a finished product according to the power used. The working box 61 is fixedly mounted below the mounting plate 9, and the driving motor 62 is mounted inside the working box 61. A driving bevel gear 63 is mounted on the output shaft of the driving motor 62, and two driven bevel gears 64 are symmetrically meshed and mounted on the driving bevel gear 63. A rotating rod 65 is horizontally mounted on each driven bevel gear 64, and the rotating rod 65 rotates The stabilizing roller 66 is mounted on the end of the rotating rod 65 and is slidably matched with the grinding tank 4. A plurality of feeders are evenly distributed on the surface of the stabilizing roller 66. When in use, the driving motor 62 drives the active bevel gear 63 to rotate. During the rotation of the active bevel gear 63, the corresponding rotating rod 65 is driven to rotate through the driven bevel gear 64. The rotating rod 65 rotates the dynamic feeder, and the feeder can stir the slag powder in the grinding tank 4. The feeder includes a fixed tube 67 and a feeder plate 6 8. One end of the fixed tube 67 is fixedly mounted on the stabilizing roller 66, and the other end of the fixed tube 67 is mounted with an end plate. One end of the stripping plate 68 is mounted with a plug-in rod 69, and the other end of the plug-in rod 69 is inserted into the fixed tube 67 after passing through the end plate. An elastic member 610 is installed between the plug-in rod 69 and the stabilizing roller 66. When the rotating rod 65 drives the stabilizing roller 66 to rotate, it will drive the stripping plate 68 to rotate. During the rotation process, multiple stripping plates 68 can stir and flatten the slag powder in the grinding tank 4, so that the slag powder material layer in the grinding tank 6 The thickness is uniform, which is beneficial to improving the grinding effect of slag powder. The stripper plate 68 is movably installed in the fixed tube 67. On the one hand, it is convenient to replace. The stabilizing roller 66 does not need to be replaced separately, and the stripper plate 68 can be replaced individually. On the other hand, the elastic member arranged between the connecting rod and the stabilizing roller has a buffering effect, which can avoid the stripper plate 68 from being damaged during the turning process and extend the service life of the stripper plate 68. Preferably, in order to improve the use effect of the stripper plate 68, the bottom surface of the stripper plate facing the grinding groove 4 is set to a structure with low sides and high middle.

[0018] Furthermore, in order to improve the effect of grinding slag powder, grinding seats 10 that cooperate with the grinding groove 4 are provided at both ends of the mounting plate 9, and the bottom surface of the grinding seat 10 is set to a semi-circular arc structure with high edges and low middle. After the feeder flattens the slag powder in the grinding groove 4, the grinding seat 10 can grind the slag powder layer again, which can improve the grinding effect of the slag powder. Preferably, in order to realize the coordinated use of the feeder and the grinding seat 1, the grinding seat 10 is located on one side of the stabilizing roller 66, and the angle α between the central axis of the grinding seat 10 and the central axis of the stabilizing roller 66 is 30~40°.

[0019] Furthermore, in order to ensure that the material stabilizing assembly 6 is always in a straight-line running state during the rising or falling process, so as to improve the stability of the movement of the material stabilizing assembly 6, a guide rod 11 is vertically installed on the mounting plates 9 on both sides of the lifting mechanism 8, and the upper end of the guide rod 11 passes through the support frame 7.

Claims

1. A slag micro-powder vertical mill structure with a material stabilizer, comprising a vertical mill body (1) and a grinding disc body (2), wherein two sets of grinding roller assemblies (3) are symmetrically arranged above the grinding disc body (2), and characterized in that: A grinding groove (4) cooperating with the grinding roller assembly (3) is circumferentially arranged on the top surface of the grinding disc body (2); a scraping assembly (5) cooperating with the grinding roller assembly (3) is installed on the vertical mill body (1) on one side of each group of grinding roller assemblies (3); a material stabilizing assembly (6) cooperating with the grinding groove (4) is arranged between the two groups of grinding roller assemblies (3); a support frame (7) is installed inside the vertical mill body (1); a lifting mechanism (8) is installed on the support frame (7); a mounting plate (9) is installed below the lifting mechanism (8); and the material stabilizing assembly (6) is installed below the mounting plate (9).

2. The slag micro-powder vertical mill structure with a material stabilizer according to claim 1, characterized in that: The scraper assembly (5) comprises a scraper arc plate (51), a support (52) and a fixed rod (53), wherein the support (52) is mounted on the vertical mill body (1) on one side of the grinding roller assembly (3), and the fixed rod (53) is mounted on the support (52). A slide seat (54) is slidably mounted on one end of the fixed rod (53), and a spring (57) is mounted on the fixed rod (53) on the side away from the grinding roller assembly (3). One end of the scraper arc plate (51) is fixedly connected to the slide seat (54), and the other end is slidably matched with the grinding roller assembly (3). A rolling ring (55) is mounted on the grinding roller of the grinding roller assembly (3), and a protrusion (56) is mounted on the edge of the rolling ring (55). The protrusion (56) is in sliding contact with the scraper arc plate (51).

3. The slag micro-powder vertical mill structure with a material stabilizer according to claim 1, characterized in that: The material stabilizing assembly (6) comprises a working box (61), a driving motor (62) and a material stabilizing roller (66); the working box (61) is fixedly mounted below the mounting plate (9); the driving motor (62) is mounted inside the working box (61); an active bevel gear (63) is mounted on the output shaft of the driving motor (62); two driven bevel gears (64) are symmetrically meshed and mounted on the active bevel gear (63); a rotating rod (65) is horizontally mounted on each driven bevel gear (64); the rotating rod (65) is rotatably mounted on the working box (61) and extends to the outside of the working box (61); the material stabilizing roller (66) is mounted on the end of the rotating rod (65) and is slidably engaged with the grinding groove (4); and a plurality of material dispensers are evenly distributed on the surface of the material stabilizing roller (66).

4. The slag micro-powder vertical mill structure with a material stabilizer according to claim 3, characterized in that: The material stripper includes a fixed tube (67) and a material stripper plate (68), one end of the fixed tube (67) is fixedly mounted on a material stabilizing roller (66), the other end of the fixed tube (67) is mounted with an end plate, one end of the material stripper plate (68) is mounted with a plug-in rod (69), the other end of the plug-in rod (69) passes through the end plate and is plugged into the fixed tube (67), and an elastic member (610) is mounted between the plug-in rod (69) and the material stabilizing roller (66).

5. The slag micro-powder vertical mill structure with a material stabilizer according to claim 4, characterized in that: The bottom surface of the stripping plate on the side facing the grinding groove (4) is arranged into a structure with low sides and high middle.

6. The slag micro-powder vertical mill structure with a material stabilizer according to claim 3, characterized in that: Grinding seats (10) matching the grinding grooves (4) are provided at both ends of the mounting plate (9), and the bottom surface of the grinding seat (10) is configured as a semicircular arc structure with high edges and low middle.

7. The slag micro-powder vertical mill structure with a material stabilizer according to claim 6, characterized in that: The grinding seat (10) is located on one side of the material stabilizing roller (66), and the angle α between the central axis of the grinding seat (10) and the central axis of the material stabilizing roller (66) is 30-40°.

8. The slag micro-powder vertical mill structure with a material stabilizer according to claim 1, characterized in that: Guide rods (11) are vertically mounted on the mounting plates (9) on both sides of the lifting mechanism (8), and the upper ends of the guide rods (11) are arranged to pass through the support frame (7).

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