Wear-resistant retainer ring of grinding roller

Abstract

The utility model relates to the technical field of vertical mills, and discloses a wear-resistant retaining ring for a grinding roller, which comprises a retaining ring and at least one layer of steel bars, the retaining ring is arranged at the edge of a grinding disc, the steel bars are positioned on the inner side of the retaining ring and fixed on the retaining ring, and the steel bars are in close contact with the retaining ring. According to the scheme, the steel bars are additionally arranged, and the material friction time is prolonged through the steel bars, so that the material grinding effect is better; meanwhile, the distance between the retaining ring and the large-head end of the grinding roller is adjusted through the steel bars, the dead angle area of the grinding roller and the retaining ring is increased, and the vertical mill runs stably.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mills, in particular to a wear-resistant retaining ring of a grinding roller. Background Art

[0002] The vertical mill is mainly composed of a transmission device, a hydraulic device, a powder concentrator, a grinding disc, a grinding roller, etc. Its main working parts are the grinding disc and the grinding roller that rolls relatively on the grinding disc. The slag falls into the center of the grinding disc through the feed port, forming a conical material pile. With the rotation of the grinding disc and the action of centrifugal force, the material pile gradually spreads to the periphery of the grinding disc and enters the grinding area of ​​the grinding disc and the grinding roller. The finished or semi-finished fine powder after grinding continues to move along the edge of the grinding disc. Since the retaining ring is set at the edge of the grinding disc, the grinding disc and the retaining ring are in close contact, and an inclined material slope with a high outside and a low inside will be formed at the edge of the grinding disc. The finished or semi-finished fine powder will enter the outlet of the blowing ring along the slope. Due to the centrifugal force of the grinding disc, some larger particles are easily discharged from the retaining ring, and a stable material layer cannot be formed on the grinding disc, which affects the quality of the material. Utility Model Content

[0003] The utility model aims to provide a wear-resistant material retaining ring of a grinding disc, so as to solve the problem that a stable material layer cannot be formed on the grinding disc and the material cannot be fully ground on the grinding disc to achieve the desired product quality.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a wear-resistant material retaining ring of a grinding disc, comprising a material retaining ring, which is arranged at the edge of the grinding disc, and also comprising a steel bar, which is located on the inner side of the material retaining ring, and the steel bar is fixed on the material retaining ring, and the steel bar is in close contact with the material retaining ring, and the steel bar is provided with at least one layer.

[0005] Preferably, the top of the steel bar is located below the top of the retaining ring.

[0006] Preferably, the steel bar is an alloy steel bar. The alloy has high strength and increases the service life of the steel bar.

[0007] Preferably, the surface of the steel bar is provided with wear-resistant lines, which increases the residence time of the material on the grinding disc, thereby achieving a better grinding effect of the material.

[0008] Preferably, the steel bar is fixed on the retaining ring by welding with a 100 mm wear-resistant weld.

[0009] Preferably, the thickness of the steel bar is 16-18 mm. The specific thickness of the steel bar can also be set according to the actual grinding material to ensure the grinding effect of the material.

[0010] Preferably, the steel bars are continuously distributed inside the retaining ring, which can provide comprehensive protection for the retaining ring, reduce wear of the retaining ring material, and increase the service life of the retaining ring.

[0011] Preferably, the steel bar is an integrally formed round steel bar, which is easier to process and manufacture.

[0012] Preferably, the shape of the steel bar matches the shape of the baffle ring.

[0013] The principle and advantages of this scheme are as follows: a steel bar is arranged on the retaining ring. When the grinding disc is running under the action of the motor, the steel bar is added to reduce the gap between the big end of the grinding roller and the retaining ring, increase their dead angle area, and allow the retaining ring and the big end of the grinding roller to form a stable material, so as to avoid the material on the grinding disc being directly thrown out of the grinding disc as soon as it is squeezed by the grinding roller, increase the residence time of the material on the grinding disc, and allow the material to be fully ground, thereby improving the fineness and specific surface; at the same time, the steel bar is used to replace the wear of the retaining ring to reduce the wear of the retaining ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0015] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0016] The following is further described in detail through specific implementation methods:

[0017] The reference numerals in the drawings of the specification include: grinding disc 1, steel bar 2, and retaining ring 3.

[0018] Example:

[0019] A wear-resistant retaining ring of a grinding roller, as shown in the attached Figure 1 and attached Figure 2 As shown, the retaining ring 3 is provided at the edge of the grinding disc 1, and the retaining ring 3 is specifically provided on the shell at the edge of the grinding disc 1. The liner, shell and reducer structure in the grinding disc structure in this embodiment are prior art and are not described in this embodiment. This embodiment improves the grinding disc 1 (referring to the structure of the rotating surface that is in direct contact with the grinding roller) and the retaining ring 3. Among them, the grinding disc 1 is cylindrical.

[0020] It also includes a steel bar 2, which is located between the retaining ring 3 and the grinding disc 1. The steel bar 2 is fixed on the retaining ring 3, and there is a gap between the inner side of the steel bar 2 and the edge of the grinding disc 1, so that the material is stacked in the gap, reducing the impact and wear of large particles on the steel bar 2. The steel bar 2 is provided with at least one layer, and multiple layers of steel bars can be provided according to the thickness of the steel bar and the hardness of the material, so as to increase the wear resistance of the retaining ring.

[0021] In this embodiment, the thickness of the steel bar 2 is 16-18 mm, preferably 17 mm. The thickness of the steel bar 2 can also be adjusted according to the hardness of the material.

[0022] The top of the steel bar 2 is located below the top of the retaining ring 3. The steel bar 2 protects the retaining ring 3 to reduce the wear of the retaining ring 3, while not affecting the discharge of the ground material in the grinding disc 1 from the retaining ring 3 for subsequent steps.

[0023] It also includes setting a flat material ring on the top of the retaining ring 3, and the flat material ring is fixed on the retaining ring 3. In this way, the steel bar 2, the retaining ring 3 and the flat material ring are used to increase the dead angle area between the big end of the grinding roller and the retaining ring 3, so that the retaining ring 3 and the big end of the grinding roller form a stable material, avoiding the material on the grinding disc 1 being directly thrown out of the grinding disc 1 when squeezed by the grinding roller.

[0024] Among them, in this embodiment, the steel bar 2 is welded and fixed on the retaining ring 3 by 100mm wear-resistant welding. Wear-resistant welding generally refers to a welding method used to enhance the wear resistance of metal surfaces. In this method, a layer of material with high hardness and wear resistance is usually welded on the metal surface to improve the wear resistance and service life of the metal parts.

[0025] The steel bar 2 is an alloy steel bar 2. The surface of the steel bar 2 is provided with wear-resistant lines. By providing the wear-resistant lines on the surface of the steel bar 2, the friction force is increased, so that the grinding effect of the material is better.

[0026] Among them, the steel bars 2 are continuously distributed outside the retaining ring 3. This continuous distribution provides comprehensive protection for the retaining ring 3, reduces the wear of the retaining ring material 3, and increases the service life of the retaining ring 3. In this embodiment, the steel bar is an integrally formed round steel, and the shape of the steel bar 2 matches the shape of the retaining ring 3. In this way, the steel bar 2 is in closer contact with the retaining ring 3, and the material is prevented from falling into the gap between the retaining ring 3 and the steel bar 2 as much as possible, which causes the retaining ring 3 to wear faster.

[0027] In this solution, a steel bar 2 is installed on the retaining ring 3, and the steel bar 2 is used to replace the wear of the retaining ring 3 to reduce the wear of the retaining ring 3. When the grinding disc 1 is running under the action of the motor, the top of the steel bar 2 will vibrate after being blocked. After the vibration, part of the iron powder is discharged from the top of the steel bar 2. The addition of the steel bar 2 reduces the gap between the big end of the grinding roller and the retaining ring 3, and increases their dead angle area, so that the retaining ring 3 and the big end of the grinding roller form a stable material, avoiding the material on the grinding disc 1 being directly thrown out of the grinding disc 1 as soon as it is squeezed by the grinding roller, increasing the residence time of the material on the grinding disc 1, allowing the material to be fully ground, thereby improving the fineness and specific surface area.

[0028] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical schemes and / or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several variations and improvements can be made without departing from the technical scheme of the utility model. In the utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A grinding roller wear-resistant retaining ring, comprising a retaining ring, wherein the retaining ring is arranged at the edge of the grinding disc, and is characterized in that: It also includes a steel bar, which is located on the inner side of the material retaining ring, fixed on the material retaining ring, in close contact with the material retaining ring, and has at least one layer.

2. The wear-resistant retaining ring of the grinding roller according to claim 1 is characterized in that: The top of the steel bar is located below the top of the retaining ring.

3. The wear-resistant retaining ring of the grinding roller according to claim 1 is characterized in that: The steel bar is an alloy steel bar.

4. The wear-resistant retaining ring of the grinding roller according to claim 1 is characterized in that: The surface of the steel bar is provided with wear-resistant lines.

5. The wear-resistant retaining ring of the grinding roller according to claim 1 is characterized in that: The steel bar is fixed on the retaining ring by welding with 100 mm wear-resistant welding.

6. The wear-resistant retaining ring of the grinding roller according to claim 1 is characterized in that: The thickness of the steel bar is 16-18 mm.

7. The wear-resistant retaining ring of the grinding roller according to claim 1 is characterized in that: The steel bars are continuously distributed inside the retaining ring.

8. The wear-resistant retaining ring of the grinding roller according to claim 7 is characterized in that: The steel bar is an integrally formed round steel bar.

9. The wear-resistant retaining ring of the grinding roller according to claim 1 is characterized in that: The shape of the steel strip matches the shape of the baffle ring.

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