Improved device of vertical mill millstone material blocking device

Abstract

The utility model discloses an improved device of a vertical mill millstone material blocking device, which comprises a vertical mill millstone, the edge of the vertical mill millstone is provided with a plurality of layers of material blocking rings, and the plurality of layers of material blocking rings form a material blocking ring group; the top of the material blocking ring set is connected with an annular wear-resisting protection plate. The edge of the top of the wear-resistant protection plate is connected with an annular wear-resistant material baffle; a surfacing wear-resisting layer is arranged on the surface of the inner ring of the material blocking ring set. According to the improved device of the vertical mill millstone material blocking device, the wear-resisting protection plate and the wear-resisting material blocking plate are arranged at the top of the material blocking ring set, the surfacing wear-resisting layer is arranged on the surface of the inner ring of the material blocking ring set, and materials directly make contact with the surfacing wear-resisting layer, the wear-resisting protection plate and the wear-resisting material blocking plate; the surfacing wear-resisting layer, the wear-resisting protection plate and the wear-resisting striker plate are good in wear-resisting effect, wear is small after the wear-resisting striker plate makes contact with materials, the service life of the striker ring set is greatly prolonged, and the operation rate of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mills, in particular to an improved device for a grinding disc material blocking device of a vertical mill. Background Art

[0002] The material of the vertical mill is on the grinding disc, and the grinding roller applies pressure on the grinding disc to grind the material. The incoming material needs to have a certain thickness, so a material blocking ring (also known as a material blocking device) needs to be fixed on the edge of the grinding disc to keep a certain thickness of material on the grinding disc. The material is scattered out of the material blocking ring under the action of centrifugal force, enters the vertical mill air chamber, and is scraped out of the mill by the scraping device (i.e., scraped out of the vertical mill air chamber). The material blocking ring will be worn by the material, and when it is worn to a certain extent, the machine needs to be stopped to replace the material blocking ring, which is also expensive and takes a long time to be stopped for replacement, which also affects the operation rate of the equipment.

[0003] Therefore, it is necessary to improve the retaining ring (i.e., the retaining device) on the vertical mill grinding disc, that is, to provide an improved device for the retaining device of the vertical mill grinding disc to reduce the wear of the material on the retaining ring, increase the life of the retaining ring, and improve the operation rate of the equipment. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide an improved device for a vertical mill grinding disc material baffle device in view of the deficiencies of the above-mentioned prior art. The improved device for the vertical mill grinding disc material baffle device is provided with a wear-resistant protective plate and a wear-resistant material baffle plate on the top of the material baffle ring group, and a welded wear-resistant layer is provided on the inner ring surface of the material baffle ring group. The material directly contacts the welded wear-resistant layer, the wear-resistant protective plate and the wear-resistant material baffle plate. The welded wear-resistant layer, the wear-resistant protective plate and the wear-resistant material baffle plate have good wear-resistant effect, and the wear is also very small after contacting with the material, which greatly prolongs the service life of the material baffle ring group and improves the operation rate of the equipment.

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

[0006] An improved device for a vertical mill grinding disc material blocking device, comprising a vertical mill grinding disc, wherein a plurality of layers of material blocking rings are arranged at the edge of the vertical mill grinding disc, and the plurality of layers of material blocking rings form a material blocking ring group;

[0007] The top of the retaining ring assembly is connected with an annular wear-resistant protection plate;

[0008] The top edge of the wear-resistant protective plate is connected with an annular wear-resistant material blocking plate;

[0009] The inner ring surface of the retaining ring assembly is provided with a surfacing wear-resistant layer.

[0010] As a further improved technical solution of the utility model, a countersunk through hole is provided on the wear-resistant protection plate, a threaded through hole is provided on the bottom blocker ring in the blocker ring group, and through holes are provided on the remaining blocker rings. The countersunk through hole on the wear-resistant protection plate, the through holes on the blocker rings in the blocker ring group, and the threaded through hole on the bottom blocker ring in the blocker ring group are connected in sequence by bolts.

[0011] As a further improved technical solution of the utility model, the bolt is located on the inner side of the annular wear-resistant material baffle plate.

[0012] As a further improved technical solution of the utility model, the wear-resistant protection plate and the wear-resistant material blocking plate are both made of HD wear-resistant plate.

[0013] As a further improved technical solution of the utility model, the wear-resistant material blocking plate and the wear-resistant protection plate are fixedly connected by welding.

[0014] As a further improved technical solution of the utility model, the surfacing wear-resistant layer is a surfacing welding rod, and the inner ring of each layer of the retaining ring is connected with a surfacing welding rod by welding.

[0015] The beneficial effects of the utility model are:

[0016] The improved device of the vertical mill grinding disc material blocking device is provided with a material blocking ring group at the edge of the vertical mill grinding disc, and a wear-resistant protective plate and a wear-resistant material blocking plate are provided on the top of the material blocking ring group. A welded wear-resistant layer is provided on the inner ring surface of the material blocking ring group, and the material directly contacts the welded wear-resistant layer, the wear-resistant protective plate and the wear-resistant material blocking plate. The welded wear-resistant layer, the wear-resistant protective plate and the wear-resistant material blocking plate have good wear-resistant effect and little wear after contacting with the material, which greatly prolongs the service life of the material blocking ring group, also prolongs the service life of the improved device of the vertical mill grinding disc material blocking device, and improves the operation rate of the equipment.

[0017] The retaining ring assembly is composed of multiple layers of retaining rings, which are connected to the wear-resistant protective plates by bolts. If the wear-resistant protective plates on the top of the retaining rings need to be replaced, it can be achieved by simply removing the bolts. The replacement process is simple and convenient, and the replacement time is short. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 for Figure 1 A partial enlarged view of middle A. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model is further described below according to the accompanying drawings:

[0021] An improved device for a vertical mill grinding disc material blocking device, such as Figure 1 As shown, it includes a vertical mill grinding disc 5, and a multi-layer retaining ring 1 is fixedly connected to the edge of the vertical mill grinding disc 5, and the multi-layer retaining ring 1 forms a retaining ring group. The top of the retaining ring group is connected to an annular wear-resistant protective plate 2. A mill housing 7 is provided on the outside of the vertical mill grinding disc 5, and a vertical mill air chamber 6 is formed between the mill housing 7 and the vertical mill grinding disc 5. After the material is scattered out of the retaining ring group under the action of the centrifugal force, it enters the vertical mill air chamber 6 and is scraped out of the vertical mill air chamber 6 by the scraping device, and the material is finally discharged from the material outlet at the bottom of the mill housing 7.

[0022] The top edge of the wear-resistant protection plate 2 is connected with an annular wear-resistant material retaining plate 3 ; the inner ring surface of the retaining ring assembly is provided with a surfacing wear-resistant layer 4 .

[0023] In this embodiment, Figure 1-2 As shown, the wear-resistant protection plate 2 is provided with a countersunk through hole, the bottom-layer retaining ring 1 in the retaining ring group is provided with a threaded through hole, and the remaining retaining rings 1 are provided with through holes. The countersunk through holes on the wear-resistant protection plate 2, the through holes on the retaining ring 1 in the retaining ring group, and the threaded through holes on the bottom-layer retaining ring 1 in the retaining ring group are connected in sequence by bolts 8.

[0024] In this embodiment, the bolts 8 are located on the inner side of the annular wear-resistant material blocking plate 3 .

[0025] In this embodiment, the wear-resistant protection plate 2 and the wear-resistant material blocking plate 3 are both made of HD wear-resistant plate.

[0026] In this embodiment, the wear-resistant material blocking plate 3 and the wear-resistant protection plate 2 are fixedly connected by welding.

[0027] In this embodiment, the surfacing wear-resistant layer 4 is a surfacing welding rod, and the surfacing welding rod is respectively welded on the inner ring of each layer of the retaining ring 1. The surfacing welding rod can be made of Q235B material.

[0028] The improved device of the vertical mill grinding disc material retaining device is provided with a retaining ring group at the edge of the vertical mill grinding disc 5, and a wear-resistant protective plate 2 and a wear-resistant retaining plate 3 are arranged on the top of the retaining ring group. A welded wear-resistant layer 4 is arranged on the inner ring surface of the retaining ring group. The material directly contacts the welded wear-resistant layer 4, the wear-resistant protective plate 2 and the wear-resistant retaining plate 3. The welded wear-resistant layer 4, the wear-resistant protective plate 2 and the wear-resistant retaining plate 3 have good wear-resistant effect and little wear after contacting with the material, which greatly prolongs the service life of the retaining ring group, and also prolongs the service life of the improved device of the vertical mill grinding disc material retaining device, thereby improving the operation rate of the equipment.

[0029] The retaining ring group is composed of a plurality of retaining rings 1, and the plurality of retaining rings 1 are connected to the wear-resistant protective plate 2 by bolts 8. If the wear-resistant protective plate 2 on the top of the retaining ring 1 needs to be replaced, it can be realized by simply removing the bolts 8. The replacement process is simple and convenient, and the replacement time is short. In addition, the plurality of retaining rings 1 are connected by bolts 8, and partial retaining ring replacement can also be performed. In this embodiment, the bottom retaining ring 1 can be fixedly connected to the edge of the vertical mill grinding disc 5 by welding.

[0030] 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 device for a vertical mill grinding disc material blocking device, comprising a vertical mill grinding disc (5), characterized in that: A plurality of layers of retaining rings (1) are arranged at the edge of the vertical mill grinding disc (5), and the plurality of layers of retaining rings (1) form a retaining ring group; The top of the retaining ring assembly is connected with an annular wear-resistant protection plate (2); The top edge of the wear-resistant protection plate (2) is connected to an annular wear-resistant material blocking plate (3); The inner ring surface of the retaining ring assembly is provided with a surfacing wear-resistant layer (4).

2. The improved device for the vertical mill grinding disc blocking device according to claim 1 is characterized in that: The wear-resistant protection plate (2) is provided with a countersunk through hole, the blocking ring (1) at the bottom layer in the blocking ring group is provided with a threaded through hole, and the remaining blocking rings (1) are provided with through holes. The countersunk through hole on the wear-resistant protection plate (2), the through hole on the blocking ring (1) in the blocking ring group, and the threaded through hole on the blocking ring (1) at the bottom layer in the blocking ring group are connected in sequence by bolts (8).

3. The improved device for the vertical mill grinding disc blocking device according to claim 2 is characterized in that: The bolt (8) is located on the inner side of the annular wear-resistant material blocking plate (3).

4. The improved device for the vertical mill grinding disc blocking device according to claim 1 is characterized in that: The wear-resistant protection plate (2) and the wear-resistant material blocking plate (3) are both made of HD wear-resistant plate.

5. The improved device for the vertical mill grinding disc blocking device according to claim 1 is characterized in that: The wear-resistant material blocking plate (3) and the wear-resistant protection plate (2) are fixedly connected by welding.

6. The improved device for the vertical mill grinding disc blocking device according to claim 1 is characterized in that: The surfacing wear-resistant layer (4) is a surfacing welding rod, and the inner ring of each layer of the retaining ring (1) is connected to the surfacing welding rod by welding.

Images