Wear-resistant discharging and homogenizing device for cement final powder vertical mill

Abstract

The utility model discloses a wear-resistant blanking homogenizing device for a cement final powder vertical mill, which comprises a feeding chute and a homogenizing device shell, the lower end of the feeding chute is connected with the upper part of the homogenizing device shell, a blanking impact plate for material impact is arranged in the homogenizing device shell, and a discharge port is formed at the lower end of the homogenizing device shell. The wear-resistant discharging and homogenizing device for the cement final powder vertical mill is reasonable in structural design, the wear-resistant blocking structure in the wear-resistant discharging and homogenizing device is used for impacting large materials, the impact force of the large materials is reduced, and the service life of a center cover plate of a grinding disc is prolonged; due to the sealed structure, other airflow cannot be generated, and correct airflow in the mill is disturbed; and the materials can be uniformly distributed on the millstone lining plate through discharging in four directions, so that vibration in the mill is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cement final powder vertical mill, in particular to a wear-resistant material feeding and homogenizing device for cement final powder vertical mill. Background Art

[0002] Vertical mills are now widely used in cement plants and grinding plants for grinding raw materials, clinker, slag, etc. They are highly efficient and energy-saving industrial equipment with good economic benefits and energy-saving effects. However, since the mill has only one feed inlet, the material will directly fall on the fixed position on the grinding disc after entering the mill. Over time, the center cover of the grinding disc in this area will be severely worn, affecting the service life of the center cover of the grinding disc and increasing the frequency of shutdown maintenance.

[0003] For example, CN204953084U discloses a vertical mill material leveling device, comprising a scraper rod base fixed on the inner side of the vertical mill shell and a scraper rod arranged above the center cover plate of the grinding disc of the vertical mill, wherein the scraper rod is fixedly connected to the scraper rod base via a connecting rod, and there is a gap of equal width at all locations between the center cover plate of the grinding disc and the scraper rod; the material falling through the feed port directly falls on a fixed position on the center cover plate of the grinding disc, and this area is severely worn, affecting the service life of the cover plate. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a wear-resistant material feeding and homogenizing device for a cement final powder vertical mill, which can effectively reduce the impact wear of materials on the center cover plate of the grinding disc.

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

[0006] The wear-resistant material discharging and homogenizing device for cement final powder vertical mill comprises a feeding chute and a homogenizing device shell, wherein the lower end of the feeding chute is connected to the upper part of the homogenizing device shell, a material discharging and impacting plate for material impact is arranged in the homogenizing device shell, and a material discharge port is formed at the lower end of the homogenizing device shell.

[0007] Further:

[0008] The lower end of the housing of the homogenizing device is a conical structure.

[0009] The blanking impact plate comprises a group of strip plates, which are arranged crosswise.

[0010] A group of wear-resistant structures are arranged on the inner wall of the homogenizing device shell along the circumferential direction.

[0011] The strip plate is an H-shaped steel, and the end of the strip plate is fixed on the inner wall of the homogenizing device shell.

[0012] The group of strip plates comprises an upper strip plate and a lower strip plate, and the upper strip plate and the lower strip plate are arranged with an interval up and down.

[0013] The wear-resistant structure is wear-resistant angle steel.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The wear-resistant material discharging and homogenizing device for cement final powder vertical mill has a reasonable structural design. It uses its internal wear-resistant barrier structure to collide with large pieces of materials, reduce their impact force, and extend the service life of the center cover of the grinding disc; the sealed structure prevents it from generating other airflows and disturbing the correct airflow inside the mill; the four-directional discharging can make the material more evenly distributed on the grinding disc lining, reducing the vibration inside the mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following is a brief description of the contents and symbols in the drawings of this specification:

[0017] Figure 1 It is a schematic diagram of the structure of the device of the utility model.

[0018] Figure 2 It is a schematic diagram of the interior of the device of the utility model.

[0019] In the figure:

[0020] 1. Feed chute, 2. Homogenizer housing, 3. Discharge port, 4. Discharge impact plate, 5. Wear-resistant angle steel. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0022] like Figure 1 and Figure 2 As shown, the wear-resistant feeding and homogenizing device for cement final powder vertical mill includes a feed chute 1 and a homogenizing device shell 2; the homogenizing device shell 2 is a cylindrical shell with a top seal, the lower end of the feed chute 1 is connected to the upper part of the homogenizing device shell, the feed chute is located on one side of the homogenizing device shell, and the feed chute is inclined to facilitate feeding.

[0023] A material impact plate 4 for material impact is provided in the housing of the homogenizer, and a material outlet 3 is formed at the lower end of the housing of the homogenizer. The wear-resistant blocking structure inside the homogenizer is used to impact with large pieces of material, thereby reducing its impact force and extending the service life of the center cover of the grinding disc.

[0024] The lower end of the homogenizer shell 2 is a conical structure, and the discharge port is the lower port of the conical structure. The homogenizer shell forms a sealed structure with only the lower part opening. The sealed structure prevents other airflows from being generated to disturb the correct airflow inside the mill.

[0025] The material impact plate 4 comprises a group of strip plates, which are arranged crosswise. Preferably, the group of strip plates comprises an upper strip plate and a lower strip plate, which are arranged at intervals from top to bottom; that is, there is a space between the upper strip plate and the lower strip plate to avoid material blockage.

[0026] Furthermore, the strip plate is an H-shaped steel, and the ends of the strip plate are fixed to the inner wall of the homogenizing device shell through brackets and bolts, which is convenient for assembly, disassembly and replacement.

[0027] A group of wear-resistant structures are provided on the inner wall of the homogenizer shell along the circumferential direction; preferably, the wear-resistant structure is a wear-resistant angle steel 5 fixed by surfacing welding; the wear-resistant structure can effectively protect the inner wall of the homogenizer shell to avoid serious wear and tear that affects its service life.

[0028] The utility model installs a sealing structure at the outlet of the feed chute, and has an outlet in the form of a cladding wear-resistant plate inside. The main purpose is to reduce the impact force of the material and use the gravity of the large pieces of material to break up the large pieces of material; the structure is stabilized without affecting the original capacity, so as to achieve the purpose of extending the service life of the center cover of the grinding disc, reducing the vibration of the mill and stabilizing the airflow in the mill.

[0029] The above is only an explanation of the preferred embodiments of the present invention. The above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0030] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A wear-resistant material feeding and homogenizing device for cement final powder vertical mill, comprising a feeding chute, characterized in that: It also includes a homogenizer shell, the lower end of the feed chute is connected to the upper part of the homogenizer shell, a material discharge impact plate for material impact is arranged in the homogenizer shell, and a discharge port is formed at the lower end of the homogenizer shell.

2. The wear-resistant material feeding and homogenizing device for cement final powder vertical mill according to claim 1, characterized in that: The lower end of the housing of the homogenizing device is a conical structure.

3. The wear-resistant material feeding and homogenizing device for cement final powder vertical mill according to claim 1, characterized in that: The blanking impact plate comprises a group of strip plates, which are arranged crosswise.

4. The wear-resistant material feeding and homogenizing device for cement final powder vertical mill according to claim 1, characterized in that: A group of wear-resistant structures are arranged on the inner wall of the homogenizing device shell along the circumferential direction.

5. The wear-resistant material feeding and homogenizing device for cement final powder vertical mill as claimed in claim 3, characterized in that: The strip plate is an H-shaped steel, and the end of the strip plate is fixed on the inner wall of the homogenizing device shell.

6. The wear-resistant material feeding and homogenizing device for cement final powder vertical mill according to claim 3, characterized in that: The group of strip plates comprises an upper strip plate and a lower strip plate, and the upper strip plate and the lower strip plate are arranged with an interval up and down.

7. The wear-resistant material feeding and homogenizing device for cement final powder vertical mill as claimed in claim 4, characterized in that: The wear-resistant structure is wear-resistant angle steel.

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