Control device for millstone material layer of vertical mill

Abstract

The utility model discloses a control device for a millstone material layer of a vertical mill. The control device comprises a connecting plate and a material layer control device, the material layer control device is connected with a connecting plate, the connecting plate is connected with an extension section of a coarse powder funnel in a powder concentrator located above a millstone of the vertical mill, and the connecting position of the connecting plate and the extension section of the coarse powder funnel is adjustable; the material layer control device is located above the vertical mill millstone and used for making contact with materials on the vertical mill millstone. The connecting plate with the material layer control device is connected to the extension section of the coarse powder funnel, the vertical mill millstone runs in production, the material layer control device connected to the extension section of the coarse powder funnel of the powder concentrator does not rotate, and the material layer in the middle of the vertical mill millstone can be uniformly arranged on the vertical mill millstone as far as possible by rotating one by one and not rotating one by one. The running stability of equipment is improved, and the failure rate is reduced; and the connecting position of the connecting plate and the extension section of the coarse powder funnel is adjustable, so that the thickness of a material layer on the millstone of the vertical mill is controlled.

Description

Technical Field

[0001] The utility model relates to the field of mining machinery, in particular to a control device for a material layer of a vertical mill grinding disc. Background Art

[0002] The vertical mill powder classifier generally includes a powder classifier, a grinding roller on a grinding disc and a vertical mill grinding disc. The powder classifier is located above the vertical mill grinding disc. The working principle of the traditional vertical mill powder classifier is that the material is fed into the middle of the vertical mill grinding disc through the chute on the upper part of the powder classifier. The eccentricity is generated by the rotation of the vertical mill grinding disc. The material in the middle of the vertical mill grinding disc is scattered to the side to arrange the material layer. The grinding roller on the side grinds and presses the material to form particles of different sizes. There is a certain negative pressure wind in the mill, and the material is sucked away by the wind. The sucked away material passes through the powder classifier. Some of the finer particles that meet the production requirements are taken out of the powder classifier by the negative pressure wind of a certain pressure to form a finished product. Some of the particles of certain sizes that cannot be taken away by the negative pressure wind of a certain pressure fall into a coarse powder hopper at the bottom of the powder classifier, and then fall back to the vertical mill grinding disc to repeat the above process.

[0003] The material enters the middle of the vertical mill disc from the top through a chute. The dryness of the incoming material is different (the dryness of the material in winter and summer is particularly obvious). If the material has a high moisture content, the material in the middle is difficult to spread to the edge of the vertical mill disc under the rotation of the vertical mill disc. There are rollers running on the vertical mill disc, and the material layer thickness is difficult to control. The thickness of the material on the vertical mill disc will be different. The thickness of the material layer on the vertical mill disc has a great impact on the work of the roller, the vibration of the entire system, and the reducer and other equipment. The uneven material layer will cause the roller to run unsteadily, and the bearings and other operating parts in the roller will be easily damaged, which will increase the operating load of the reducer and the operating parts will be easily damaged.

[0004] Since the dryness of the material is different in different seasons; when the material entering the vertical mill grinding disc is dry, the material layer should be high, and the mill working condition is stable, and the mill output can be increased; when the material entering the vertical mill grinding disc is wet, the material layer should be low, and the mill working condition can be more stable.

[0005] In summary, it is necessary to provide a control device that can control the thickness of the material layer and arrange the material layer on the grinding disc as evenly as possible. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a control device for the material layer of a vertical mill grinding disc in view of the deficiencies of the above-mentioned prior art. The control device for the material layer of the vertical mill grinding disc is connected to a connecting plate with a material layer control device on the extension section of the coarse powder funnel. When the vertical mill grinding disc is running in production, the material layer control device connected to the extension section of the coarse powder funnel of the powder selector does not rotate. One rotates and the other does not rotate, so the material layer in the middle of the vertical mill grinding disc can be arranged as evenly as possible on the vertical mill grinding disc, that is, the material is forcibly scraped into the most even arrangement, thereby increasing the stability of the equipment operation and reducing the failure rate; and the connection position between the connecting plate and the extension section of the coarse powder funnel is adjustable, so that the spacing between the material layer control device and the vertical mill grinding disc is adjustable, thereby realizing the control of the material layer thickness on the vertical mill grinding disc.

[0007] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0008] A material layer control device for a vertical mill grinding disc, comprising a connecting plate and a material layer control device;

[0009] The material layer control device is connected to a connecting plate, and the connecting plate is connected to an extended section of a coarse powder hopper in a powder concentrator located above the vertical mill grinding disc, and the connection position of the connecting plate and the extended section of the coarse powder hopper is adjustable;

[0010] The material layer control device is located above the vertical mill grinding disc and is used for contacting with the material on the vertical mill grinding disc.

[0011] As a further improved technical solution of the utility model, one side of the connecting plate is also vertically connected to an ear plate, and a plurality of connecting holes located in the same vertical direction are opened on the ear plate, and mounting holes for connecting with the connecting holes on the ear plate are opened on the extension section of the coarse powder funnel in the powder classifier, and the connecting holes on the ear plate are connected to the mounting holes on the extension section by bolts.

[0012] As a further improved technical solution of the utility model, the material layer control device is fixedly connected to the connecting plate by welding.

[0013] As a further improved technical solution of the utility model, a welded wear-resistant layer is provided at the contact position between the material layer control device and the material on the vertical mill grinding disc.

[0014] As a further improved technical solution of the utility model, the surfacing wear-resistant layer is a surfacing wear-resistant welding rod, and the surfacing wear-resistant welding rod is welded at the contact position between the material layer control device and the material by surfacing welding.

[0015] As a further improved technical solution of the utility model, there are three material layer control devices and three connecting plates.

[0016] As a further improved technical solution of the utility model, the material layer control device includes an upper horizontal circular tube, a lower horizontal circular tube and a middle vertical circular tube. The upper horizontal circular tube and the lower horizontal circular tube are fixedly connected by multiple middle vertical circular tubes, and the upper horizontal circular tube is fixedly connected to the connecting plate by welding.

[0017] The beneficial effects of the utility model are:

[0018] The utility model adds a connecting plate with a material layer control device to the extension section of the coarse powder hopper of the powder selector. The material layer control device and the material contact parts are all welded with wear-resistant welding rods, which are not easy to wear. The material layer control device can be moved up and down through the different connection positions of the connecting plate and the extension section. The vertical mill grinding disc is running in production, and the extension section of the coarse powder funnel of the powder selector does not rotate. One rotates and the other is fixed, so that the material layer of the grinding disc can be controlled to a suitable thickness. Due to the addition of the material layer control device, the material layer control device is moved up and down according to the different materials, so that the material layer and the working conditions of the mill are matched. The stability of the equipment operation is increased and the failure rate is reduced. The connection position between the connecting plate and the extension section of the coarse powder funnel is adjustable, so that the distance between the material layer control device and the vertical mill grinding disc is adjustable, thereby realizing the control of the material layer thickness on the vertical mill grinding disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 for Figure 1 A partial enlarged view of middle A.

[0021] Figure 3 (a) is the front view of the connecting plate.

[0022] Figure 3 (b) is a side view of the connecting plate.

[0023] Figure 4 It is a schematic diagram of the structure after the material layer control device is connected to the connecting plate. DETAILED DESCRIPTION

[0024] The specific implementation of the utility model is further described below according to the accompanying drawings:

[0025] like Figure 1 and Figure 2As shown, a material layer control device for a vertical mill grinding disc comprises a connecting plate 2 and a material layer control device 3; the material layer control device 3 is connected to the connecting plate 2, the connecting plate 2 is connected to an extension section 1 of a coarse powder hopper in a powder selector located above the vertical mill grinding disc 6, and the connection position of the connecting plate 2 and the extension section 1 of the coarse powder hopper is adjustable; the material layer control device 3 is located above the vertical mill grinding disc 6 and the material layer control device 3 is used to contact the material 5 on the vertical mill grinding disc 6. A grinding roller 4 is provided at the edge of the vertical mill grinding disc 6. The extension section 1 of the coarse powder hopper in the powder selector is located above the vertical mill grinding disc 6.

[0026] like Figure 3 As shown in (a) and (b), one side of the connecting plate 2 is vertically connected to an ear plate 7, and the ear plate 7 is provided with a plurality of connecting holes 8 located in the same vertical direction. The extension section 1 of the coarse powder hopper in the powder classifier is provided with mounting holes for connecting with the connecting holes 8 on the ear plate 7, and the connecting holes 8 on the ear plate 7 are connected to the mounting holes on the extension section 1 by bolts. By connecting different connecting holes 8 on the ear plate 7 with the mounting holes on the extension section 1 by bolts, the spacing between the material layer control device 3 and the vertical mill grinding disc 6 can be adjusted. Figure 2 As shown, the right connecting plate 2 is a schematic diagram after being adjusted upward.

[0027] like Figure 4 As shown, the material layer control device 3 is fixedly connected to the connecting plate 2 by welding.

[0028] like Figure 4 As shown, a surfacing wear-resistant layer is provided at the contact position between the material layer control device 3 and the material 5 on the vertical mill grinding disc 6. The surfacing wear-resistant layer is a surfacing wear-resistant welding rod, and the surfacing wear-resistant welding rod is welded at the contact position between the material layer control device 3 and the material 5 by surfacing welding.

[0029] The material layer control device 3 and the connecting plate 2 are each provided with three. Figure 4 As shown, the material layer control device 3 includes an upper horizontal circular tube 9, a lower horizontal circular tube 11 and a middle vertical circular tube 10. The upper horizontal circular tube 9 and the lower horizontal circular tube 11 are fixedly connected by a plurality of middle vertical circular tubes 10, and the upper horizontal circular tube 9 is fixedly connected to the connecting plate 2 by welding. The three material layer control devices 3 can be evenly spaced and distributed in the extension section 1.

[0030] In this embodiment, a connecting plate 2 with a material layer control device 3 is added to the extension section 1 of the coarse powder hopper of the powder classifier. The contact parts of the material layer control device 3 and the material 5 are all welded with wear-resistant welding rods, which are not easy to wear. The material layer control device 3 can be moved up and down through the different connection positions of the connecting plate 2 and the extension section 1. The vertical mill grinding disc 6 is running in production, and the extension section 1 of the coarse powder hopper of the powder classifier does not rotate. One rotates and the other is fixed, so that the material layer on the vertical mill grinding disc 6 can be controlled to a suitable thickness.

[0031] In this embodiment, the connecting plate 2 and the extension section 1 of the coarse powder hopper have corresponding holes. After the connecting plate 2 is moved upward and fixed to the extension section 1 with bolts, the material layer on the grinding disc will be high; after the connecting plate 2 is moved downward and fixed to the extension section 1 with bolts, the material layer on the grinding disc will be low; therefore, the material layer control device 3 can be moved up and down according to the different materials 5 to match the material layer with the mill working conditions, thereby increasing the stability of equipment operation and reducing the failure rate.

[0032] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A control device for a material layer of a vertical mill disc, characterized in that: It comprises a connecting plate (2) and a material layer control device (3); The material layer control device (3) is connected to a connecting plate (2), and the connecting plate (2) is connected to an extension section (1) of a coarse powder hopper in a powder classifier located above the vertical mill grinding disc (6), and the connection position of the connecting plate (2) and the extension section (1) of the coarse powder hopper is adjustable; The material layer control device (3) is located above the vertical mill grinding disc (6) and the material layer control device (3) is used to contact the material (5) on the vertical mill grinding disc (6).

2. The control device for the grinding disc material layer of a vertical mill according to claim 1, characterized in that: One side of the connecting plate (2) is also vertically connected to an ear plate (7), and the ear plate (7) is provided with a plurality of connecting holes (8) located in the same vertical direction. The extension section (1) of the coarse powder hopper in the powder classifier is provided with a mounting hole for connecting with the connecting hole (8) on the ear plate (7), and the connecting hole (8) on the ear plate (7) is connected to the mounting hole on the extension section (1) by bolts.

3. The control device for the material layer of the vertical mill according to claim 2, characterized in that: The material layer control device (3) is fixedly connected to the connecting plate (2) by welding.

4. The control device for the grinding disc material layer of a vertical mill according to claim 1, characterized in that: A welded wear-resistant layer is provided at the contact position between the material layer control device (3) and the material (5) on the vertical mill grinding disc (6).

5. The control device for the material layer of the vertical mill according to claim 4, characterized in that: The surfacing wear-resistant layer is a surfacing wear-resistant welding rod, and the surfacing wear-resistant welding rod is welded at the contact position between the material layer control device (3) and the material (5) by surfacing welding.

6. The device for controlling the material layer of a vertical mill according to claim 1, characterized in that: There are three material layer control devices (3) and three connecting plates (2).

7. The control device for the material layer of the vertical mill according to claim 6, characterized in that: The material layer control device (3) comprises an upper transverse circular tube (9), a lower transverse circular tube (11) and a middle vertical circular tube (10); the upper transverse circular tube (9) and the lower transverse circular tube (11) are fixedly connected via a plurality of middle vertical circular tubes (10); and the upper transverse circular tube (9) is fixedly connected to the connecting plate (2) by welding.

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