Vertical roller mill powder concentrator

Abstract

The utility model relates to a vertical roller mill powder concentrator which comprises a millstone, grinding rollers, a feeding pipe, a powder selecting assembly, a shell and an air supply pipe, the grinding rollers are arranged on the millstone in a staggered mode, the grinding rollers comprise inner rollers and outer rollers, the millstone is correspondingly provided with an inner grinding face and an outer grinding face, the portion, penetrating through the shell, of the feeding pipe is fixedly connected with the shell, and the powder selecting assembly is arranged on the outer shell. The feeding pipe is obliquely arranged above the grinding disc; the powder selecting assembly is arranged over the grinding disc, the air supply pipe is arranged below the side of the grinding disc, and hot air supplied by the air supply pipe conveys materials ground on the grinding disc upwards to the powder selecting assembly through the shell. According to the invention, different grinding rollers are simultaneously used for coping with materials with different particle sizes, so that the loss of equipment can be greatly reduced, and the purposes of improving the economic benefit and the production efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of roller mill powder separators, in particular to a vertical roller mill powder separator. Background Art

[0002] The existing vertical roller mill powder selection device (vertical mill device for short), such as a non-metallic mineral product grinding production device published in application No. 201922311623.1, includes a base, a transmission device, a pressure device, a rocker arm monitoring, a grinding disc, a grinding roller, a powder selector, a middle shell, a feed port, a moving wheel and an air inlet, wherein the transmission device and the pressure device are arranged in parallel on the base and connected to the middle shell, the moving wheel is arranged below the base, the middle shell is arranged above the transmission device, the rocker arm monitoring is arranged above the pressure device, the bottom of the grinding disc is connected to the transmission device, the grinding roller is arranged on both sides of the grinding disc, and the grinding disc and the grinding roller are arranged inside the middle shell, the powder selector is arranged above the middle shell, the middle shell is connected to the feed port, an air inlet is arranged below the middle shell, and a discharge port is arranged above the powder selector. The non-metallic mineral product grinding production device published in the application is easy to operate, and the grinding disc and the grinding roller are used to crush the material by the action of centrifugal force, and the setting of the powder selector improves the quality of the discharged powder.

[0003] The above-mentioned existing vertical mill device cannot cope with the problem of large differences in the particle sizes of materials, so the grinding roller and the grinding disc are highly worn, which increases the cost of replacement or repair. Utility Model Content

[0004] The utility model aims to provide a vertical roller mill powder separator to solve the above problems existing in the prior art.

[0005] In order to solve the above problems, the utility model provides a vertical roller mill powder separator, including a grinding disc and grinding rollers, the grinding rollers are staggered on the grinding disc, the grinding rollers include inner rollers and outer rollers, and the inner grinding surface and the outer grinding surface are correspondingly arranged on the grinding disc.

[0006] The vertical roller mill powder separator provided by the utility model also has the following technical features:

[0007] Furthermore, it also includes a feed pipe, a powder selection component, a shell and an air supply pipe. The feed pipe passes through the shell and is fixedly connected to the shell. The feed pipe is obliquely arranged above the grinding disc; the powder selection component is arranged directly above the grinding disc, and the air supply pipe is arranged below the side of the grinding disc. The hot air sent out by the air supply pipe transports the ground material on the grinding disc upward through the shell to the powder selection component.

[0008] Furthermore, a lining plate is provided on the grinding disc at a position in contact with the grinding roller.

[0009] Furthermore, two or more inner rollers are provided, and two outer rollers are correspondingly provided on the outer side of each inner roller.

[0010] The utility model has the following beneficial effects: using different grinding rollers to deal with materials of different particle sizes at the same time can greatly reduce the loss of equipment and achieve the purpose of improving economic benefits and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional view of the overall structure of the utility model;

[0012] Figure 2 The structure of the grinding disc and grinding roller of the utility model is shown in FIG. Figure 1 ;

[0013] Figure 3 It is a top view of the grinding disc and grinding roller of the utility model;

[0014] Figure 4 The structure of the grinding disc and grinding roller of the utility model is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0015] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0016] like Figures 1 to 4 In the embodiment of the vertical roller mill powder classifier of the utility model shown, the vertical roller mill powder classifier includes a grinding disc 1 and grinding rollers 2, the grinding rollers 2 are staggered on the grinding disc 1, the grinding rollers 2 include inner rollers 21 and outer rollers 22, and the inner grinding surface 11 and the outer grinding surface 12 are correspondingly arranged on the grinding disc 1; the power source for the rotation of the grinding disc 1 is a motor 71, the output shaft of the motor 71 is connected to a reducer 72, and the reducer 72 drives the grinding disc 1 to rotate through a transmission shaft 73; the grinding rollers 2 are all connected to their corresponding rocker arm assemblies (not shown in the figure), and the hydraulic cylinder (not shown in the figure) presses the corresponding grinding rollers 2 onto the grinding disc 1 by pressing the rocker arms.

[0017] In the specific implementation process, the inner roller 21 grinds the material first, and then the material is sent to the outer roller 22 for further grinding due to the centrifugal force of the rotation of the grinding disc 1. The graded grinding of the material can reduce the loss of the grinding roller 2 and reduce the replacement or repair cost of the grinding roller 2.

[0018] In one embodiment of the present application, preferably, it also includes a feed pipe 3, a powder selection component 4, a shell 5 and an air supply pipe 6. The feed pipe 3 passes through the shell 5 and is fixedly connected to the shell 5. The feed pipe 3 is obliquely arranged above the grinding disc 1, and the feed pipe 3 delivers the material to the center of the grinding disc 1; the powder selection component 4 is arranged directly above the grinding disc 1, and the air supply pipe 6 is arranged at the lower side of the grinding disc 1. The hot air delivered by the air supply pipe 6 transports the ground material on the grinding disc 1 upward through the shell 5 to the powder selection component 4. The powder selection component 4 delivers qualified fine powder out of the device, and sends unqualified material back to the grinding disc 1 for re-grinding.

[0019] In one embodiment of the present application, preferably, a lining plate 13 is provided on the grinding disc 1 at the position in contact with the grinding roller 2. The lining plate 13 is used to prevent the wear of the grinding disc 1. Specifically, the lining plate 13 is arranged on the inner grinding surface 11 and the outer grinding surface 12 at positions corresponding to the grinding roller 2.

[0020] In one embodiment of the present application, preferably, two or more inner rollers 21 are provided, and two outer rollers 22 are provided correspondingly on the outer side of each inner roller 21; in the figure, two inner rollers 21 are provided, and four outer rollers 22 are provided.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A vertical roller mill powder concentrator, characterized in that: The invention comprises a grinding disc (1) and grinding rollers (2), wherein the grinding rollers (2) are arranged alternately on the grinding disc (1), the grinding rollers (2) comprise an inner roller (21) and an outer roller (22), and the inner grinding surface (11) and the outer grinding surface (12) are arranged correspondingly on the grinding disc (1).

2. The vertical roller mill powder concentrator according to claim 1, characterized in that: The invention also comprises a feed pipe (3), a powder selection component (4), a shell (5) and an air supply pipe (6); the feed pipe (3) passes through the shell (5) and is fixedly connected to the shell (5); the feed pipe (3) is arranged obliquely above the grinding disc (1); the powder selection component (4) is arranged directly above the grinding disc (1); the air supply pipe (6) is arranged below the side of the grinding disc (1); the hot air sent out by the air supply pipe (6) transports the ground material on the grinding disc (1) upward through the shell (5) to the powder selection component (4).

3. The vertical roller mill powder concentrator according to claim 1, characterized in that: The grinding disc (1) is provided with a lining plate (13) at a position in contact with the grinding roller (2).

4. The vertical roller mill powder concentrator according to claim 1, characterized in that: Two or more inner rollers (21) are provided, and two outer rollers (22) are correspondingly provided on the outer side of each inner roller (21).

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