Improved scraping device for discharging of millstone of vertical mill

Abstract

The utility model discloses an improved scraping device for discharging of a millstone of a vertical mill, which comprises the millstone of the vertical mill and a scraper of the vertical mill, and a plurality of threaded holes for mounting the scraper of the vertical mill are arranged on the outer wall of the millstone of the vertical mill; the vertical mill scraper comprises a scraper plate, a rib plate and a flange plate, the rib plate is fixedly connected to the scraper plate, the flange plate is fixedly connected to one side edge of the scraper plate, a plurality of through holes are drilled in the flange plate, and the through holes in the flange plate are connected with threaded holes in the outer wall of a vertical mill millstone through bolts. A mill shell is arranged on the outer side of the vertical mill millstone, and the vertical mill scraper is located in a vertical mill air chamber formed between the vertical mill millstone and the mill shell. According to the improved scraping device, the threaded holes are formed in the vertical mill millstone, then the vertical mill scraper is designed, the vertical mill scraper is directly connected with the threaded holes in the vertical mill millstone, the vertical mill scraper is convenient to replace, and through the improvement, the manufacturing cost is saved, and replacement is also convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of powder selecting machines, in particular to an improved scraping device for discharging materials from a vertical mill grinding disc. Background Art

[0002] The mill includes a mill housing, a vertical mill grinding disc, a grinding roller, etc. There is an annular mill housing outside the vertical mill grinding disc, and a vertical mill air chamber is arranged between the vertical mill grinding disc and the mill housing. The material is on the vertical mill grinding disc, and is pressed on the vertical mill grinding disc by the grinding roller to grind the material. However, the material entering the vertical mill grinding disc contains difficult-to-grind materials. The rotation of the vertical mill grinding disc generates eccentricity, and the difficult-to-grind materials are scattered out of the retaining ring on the top of the vertical mill grinding disc under the action of the centrifugal force. After that, the scattered difficult-to-grind materials enter the vertical mill air chamber and are scraped out of the outside of the mill housing by the scraping device.

[0003] The existing scraper device includes a circular scraper frame and multiple scrapers (4 to 6 groups of scrapers) installed on the circular scraper frame. The circular scraper frame is fixed on the outer wall of the vertical mill grinding disc, and the vertical mill grinding disc is located inside the circular scraper frame. Since the diameter of the vertical mill grinding disc is relatively large, the diameter of the circular scraper frame is also relatively large, and the manufacturing cost is high. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide an improved scraping device for discharging material from a vertical mill grinding disc in view of the deficiencies of the above-mentioned prior art. The improved scraping device for discharging material from a vertical mill grinding disc has a plurality of threaded holes on the vertical mill grinding disc, and then a vertical mill scraper is designed, which is directly connected to the threaded holes on the vertical mill grinding disc. The vertical mill scraper is also convenient to replace. Through the above-mentioned improvement, both the manufacturing cost is saved and the replacement is convenient.

[0005] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0006] An improved scraping device for discharging material from a vertical mill grinding disc comprises a vertical mill grinding disc and a vertical mill scraper, wherein the outer wall of the vertical mill grinding disc is provided with a plurality of threaded holes for installing the vertical mill scraper;

[0007] The vertical mill scraper comprises a scraper plate, a rib plate and a flange plate, the scraper plate is fixedly connected to the rib plate, and one side of the scraper plate is fixedly connected to the flange plate, a plurality of through holes are drilled in the flange plate, and the through holes on the flange plate are connected to the threaded holes on the outer wall of the vertical mill grinding disc by bolts;

[0008] A mill housing is disposed outside the vertical mill grinding disc, and a vertical mill scraper is located in a vertical mill air chamber formed between the vertical mill grinding disc and the mill housing.

[0009] As a further improved technical solution of the utility model, a plurality of ribs are fixedly connected to one side of the scraper by welding, and a flange plate is fixedly connected to one side of the scraper by welding.

[0010] As a further improved technical solution of the utility model, the scraper, rib plate and flange plate are all made of steel plates.

[0011] As a further improved technical solution of the utility model, a plurality of vertical mill scrapers are fixedly connected to the outer wall of the vertical mill grinding disc by bolts.

[0012] As a further improved technical solution of the utility model, a plurality of vertical mill scrapers are evenly spaced and distributed in the circumferential direction of the outer wall of the vertical mill grinding disc.

[0013] The beneficial effects of the utility model are:

[0014] The scraper improvement device of the utility model is to open a plurality of threaded holes on the outer wall of the vertical mill grinding disc, and then design a vertical mill scraper, which is directly connected to the threaded holes on the vertical mill grinding disc, and the vertical mill scraper is also convenient to replace. Through the above improvement, the manufacturing cost of the existing annular scraper frame is saved, and the replacement of the vertical mill scraper is also convenient.

[0015] The vertical mill scraper of the utility model comprises a scraper plate, a rib plate and a flange plate, wherein the scraper plate is used for scraping materials, the rib plate is used for reinforcing the scraper plate, and the flange plate is used for connecting the vertical mill scraper with the vertical mill grinding disc. The vertical mill scraper of the utility model has higher strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is the front view of the vertical grinding scraper of the utility model.

[0018] Figure 3 It is a top view of the vertical grinding scraper of the utility model. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described below according to the accompanying drawings:

[0020] like Figure 1 As shown, Figure 1 The partial structure of the vertical mill grinding disc 1 is given. This embodiment provides an improved scraping device for the vertical mill grinding disc discharge material, comprising a vertical mill grinding disc 1 and a vertical mill scraper 2. The outer wall of the vertical mill grinding disc 1 is provided with a plurality of threaded holes for installing the vertical mill scraper 2. Figure 1 As shown, a mill housing 4 is disposed outside the vertical mill grinding disc 1, a vertical mill air chamber 3 is formed between the vertical mill grinding disc 1 and the mill housing 4, and a vertical mill scraper 2 is located in the vertical mill air chamber 3 formed between the vertical mill grinding disc 1 and the mill housing 4. The vertical mill scraper 2 is close to the bottom of the vertical mill air chamber 3.

[0021] like Figure 2-3As shown, the vertical mill scraper 2 includes a scraper plate 5, a rib plate 6 and a flange plate 7. The scraper plate 5 is fixedly connected to the rib plate 6, and one side of the scraper 5 is fixedly connected to the flange plate 7. A plurality of through holes are drilled on the flange plate 7. The through holes on the flange plate 7 are connected to the threaded holes on the outer wall of the vertical mill grinding disc 1 through bolts 8.

[0022] In this embodiment, a plurality of ribs 6 are fixedly connected to one side of the scraper 5 by welding, and a flange plate 7 is fixedly connected to one side of the scraper 5 by welding.

[0023] In this embodiment, the scraper plate 5, the rib plate 6 and the flange plate 7 are all made of steel plates.

[0024] In this embodiment, 4 to 6 vertical mill scrapers 2 are fixedly connected to the outer wall of the vertical mill grinding disc 1 via bolts 8 .

[0025] In this embodiment, 4 to 6 vertical mill scrapers 2 are evenly spaced and distributed in the circumferential direction of the outer wall of the vertical mill grinding disc 1 .

[0026] When the vertical mill grinding disc 1 rotates, the vertical mill scraper 2 rotates with the rotation of the vertical mill grinding disc 1. The difficult-to-grind materials are scattered out of the retaining ring on the top of the vertical mill grinding disc 1 under the action of centrifugal force. Then, the scattered difficult-to-grind materials enter the vertical mill air chamber 3 and fall to the bottom of the mill shell 4. The vertical mill scraper 2 scrapes the difficult-to-grind materials out from the discharge port at the bottom of the mill shell 4 to the outside. Figure 1 The arrow in the figure indicates the material discharge direction.

[0027] The scraper improvement device of the utility model is to open a plurality of threaded holes on the outer wall of the vertical mill grinding disc 1, and then design a vertical mill scraper 2, and directly connect the vertical mill scraper 2 to the threaded holes on the vertical mill grinding disc 1, and the vertical mill scraper 2 is also convenient to replace. Through the above improvement, the manufacturing cost of the existing annular scraper frame is saved, and it is also convenient to replace.

[0028] The vertical mill scraper 2 of the utility model comprises a scraper plate 5, a rib plate 6 and a flange plate 7. The scraper plate 5 is used for scraping materials, the rib plate 6 is used for reinforcing the overall structure of the vertical mill scraper 2, and the flange plate 7 is used for connecting the vertical mill scraper 2 with the vertical mill grinding disc 1. The vertical mill scraper 2 of the utility model has higher strength.

[0029] 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. An improved scraping device for vertical mill grinding disc discharge material, characterized in that: It comprises a vertical mill grinding disc (1) and a vertical mill scraper (2), wherein the outer wall of the vertical mill grinding disc (1) is provided with a plurality of threaded holes for mounting the vertical mill scraper (2); The vertical mill scraper (2) comprises a scraper plate (5), a rib plate (6) and a flange plate (7); the scraper plate (5) is fixedly connected to the rib plate (6), and one side of the scraper plate (5) is fixedly connected to the flange plate (7); a plurality of through holes are drilled on the flange plate (7); the through holes on the flange plate (7) are connected to the threaded holes on the outer wall of the vertical mill grinding disc (1) via bolts (8); A mill housing (4) is disposed outside the vertical mill grinding disc (1), and the vertical mill scraper (2) is located in a vertical mill air chamber (3) formed between the vertical mill grinding disc (1) and the mill housing (4).

2. The device for improving scraping of the discharge material from the vertical mill according to claim 1 is characterized in that: One side of the scraper (5) is fixedly connected to a plurality of ribs (6) by welding, and one side edge of the scraper (5) is fixedly connected to a flange plate (7) by welding.

3. The device for improving scraping of the vertical mill grinding disc discharge material according to claim 2 is characterized in that: The scraper (5), rib plate (6) and flange plate (7) are all made of steel plates.

4. The device for improving scraping of the discharge material from the vertical mill according to claim 1 is characterized in that: A plurality of vertical mill scrapers (2) are fixedly connected to the outer wall of the vertical mill grinding disc (1) via bolts (8).

5. The device for improving scraping of the discharge material from the vertical mill according to claim 4 is characterized in that: A plurality of vertical mill scrapers (2) are evenly spaced and distributed in the circumferential direction of the outer wall of the vertical mill grinding disc (1).

Images