Wear-resistant alloy steel ball

Abstract

The utility model relates to the technical field of steel balls, in particular to a wear-resistant alloy steel ball which comprises an inner ball core, first wear-resistant lining plates and second wear-resistant lining plates are arranged on the outer surface of the inner ball core, five second wear-resistant lining plates are arranged on the periphery of each first wear-resistant lining plate in a surrounding mode, and three first wear-resistant lining plates are arranged on the periphery of each second wear-resistant lining plate in a surrounding mode. The second wear-resisting lining plate protrudes out of the first wear-resisting lining plate, a threaded rod extending outwards is arranged on the outer surface of the inner ball core and penetrates through the second wear-resisting lining plate, a nut is arranged at the outermost tail end of the threaded rod, a damping layer is arranged between the second wear-resisting lining plate and the inner ball core, and the second wear-resisting lining plate protrudes out of the first wear-resisting lining plate. A bolt through hole is formed in the center of each wear-resistant lining plate II; the protruding wear-resistant lining plate II has the highest hardness and is of a replaceable design, and after the wear reaches a certain limit value, the wear-resistant lining plate can be replaced only by unscrewing a nut without replacing the whole alloy steel ball; the crushing and grinding effects are good; the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel balls, in particular to a wear-resistant alloy steel ball. Background Art

[0002] In modern industrial production, some materials need to be crushed and ground into finer pieces. For example, large pieces of ore mined need to be crushed for the next step of transportation and processing. This requires the use of a ball mill. A large number of alloy steel balls need to be placed in the closed rotating cylinder of the ball mill. The alloy steel balls achieve the purpose of crushing by extrusion and collision with the materials. This process has the advantages of high production efficiency, environmental protection, low cost, and continuous production. In this process, the alloy steel balls, an important component, need to withstand high pressure, high impact and high wear. Improving their wear resistance significantly extends their service life, reduces the frequency of replacement and replenishment, and ensures the working efficiency of the ball mill. Utility Model Content

[0003] The utility model aims to reduce the use cost of a ball mill and provide a wear-resistant alloy steel ball with a long service life.

[0004] To achieve the above purpose, the solution adopted by the utility model is:

[0005] A wear-resistant alloy steel ball comprises an inner core, wherein the outer surface of the inner core is provided with a wear-resistant lining plate 1 and a wear-resistant lining plate 2, each wear-resistant lining plate 1 is surrounded by 5 wear-resistant lining plates 2, and each wear-resistant lining plate 2 is surrounded by 3 wear-resistant lining plates 1; the wear-resistant lining plate 2 protrudes out of the wear-resistant lining plate 1, and the outer surface of the inner core is provided with a threaded rod extending outward, the threaded rod passes through the wear-resistant lining plate 2 and is provided with a nut at the outermost end.

[0006] Furthermore, a shock-absorbing layer is arranged between the wear-resistant lining plate 2 and the inner core, the wear-resistant lining plate 2 protrudes from the wear-resistant lining plate 1 by 1 to 3 mm, and a bolt through hole is opened in the center of each wear-resistant lining plate 2.

[0007] Furthermore, the number of the wear-resistant liner plates 2 is greater than that of the wear-resistant liner plates 1, the HRC of the wear-resistant liner plates 2 is equal to that of the nut but greater than that of the wear-resistant liner plates 1, and the density of the wear-resistant liner plates 1 is greater than that of the inner ball core.

[0008] Furthermore, a hexagonal prism structure is arranged on the periphery of the nut, and a hemispherical wear-resistant head is arranged at the outermost end.

[0009] Furthermore, the second outer surface of the wear-resistant lining plate is provided with densely distributed triangular ridges.

[0010] Furthermore, the central axis of each threaded rod passes through the center of the inner core.

[0011] Furthermore, the shock-absorbing layer is a flexible compressible rubber with a thickness of 1 mm to 3 mm.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The protruding wear-resistant lining plate has the highest hardness and is replaceable. When the wear reaches a certain limit, you only need to unscrew the nut and replace it without replacing the entire alloy steel ball.

[0014] 2. The triangular ridge protrusion structure on the second surface of the wear-resistant lining plate is combined with the evenly arranged nut protrusion structure, which has a good crushing and grinding effect.

[0015] 3. The inner core that does not directly contact the material can be made of materials with poor wear resistance and low price, saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0018] Figure 3 It is a structural schematic diagram of the wear-resistant lining plate 2 in the utility model;

[0019] Figure 4 It is a schematic diagram of the assembly of the wear-resistant liner plate 2 and the inner ball core in the utility model.

[0020] In the figure: 1, inner ball core; 1a, threaded rod; 1b, nut; 1b-1, hexagonal prism structure; 1b-2, wear-resistant head; 2, wear-resistant lining plate 1; 3, wear-resistant lining plate 2; 3a, triangular convex ridge; 3b, bolt through hole; 4, shock-absorbing layer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] like Figure 1 to Figure 4 As shown, a wear-resistant alloy steel ball comprises an inner ball core 1 which is not in direct contact with the material. The outer surface of the inner ball core 1 is provided with a wear-resistant lining plate 1 2 and a wear-resistant lining plate 2 3 which are in direct contact with the material. Each wear-resistant lining plate 1 2 is surrounded by 5 wear-resistant lining plates 2 3. Each wear-resistant lining plate 2 3 is surrounded by 3 wear-resistant lining plates 1 2. The two are combined to form a complete wrapping of the inner ball core 1, and the inner ball core 1 is completely isolated from the material. Therefore, it can be manufactured with cheap materials with poor wear resistance, saving production costs.

[0023] The wear-resistant lining plate 2 3 protrudes out of the wear-resistant lining plate 1 2. In order to realize the detachable connection between the wear-resistant lining plate 2 3 and the inner core 1, the outer surface of the inner core 1 is provided with a threaded rod 1a extending outward. The central axis of each threaded rod 1a passes through the center of the inner core 1. The threaded rod 1a passes through the wear-resistant lining plate 2 3 and is provided with a nut 1b at the outermost end.

[0024] A shock-absorbing layer 4 is arranged between the wear-resistant lining plate 2 3 and the inner ball core 1. The shock-absorbing layer 4 is a flexible compressible rubber with a thickness of 1mm to 3mm. The wear-resistant lining plate 2 3 protrudes from the wear-resistant lining plate 1 2 by 1 to 3mm. A bolt through hole 3b is opened in the center of each wear-resistant lining plate 2 3. An anti-slip washer is arranged between the nut 1b and the wear-resistant lining plate 2 3. When the wear-resistant lining plate 2 3 is installed to the outside of the inner ball core 1, the threaded rod 1a passes through the shock-absorbing layer 4, the wear-resistant lining plate 2 3 and the anti-slip washer in turn, and the nut 1b is screwed on the outermost end. The protruding wear-resistant lining plate 2 3 is replaceable. When the wear reaches a certain limit, you only need to unscrew the nut 1b and replace it without replacing the entire alloy steel ball.

[0025] The number of wear-resistant lining plates 23 is more than that of wear-resistant lining plates 12, because the wear-resistant lining plates 23 have the most collision and friction with the material, so their Rockwell hardness HRC is equal to that of nut 1b but greater than that of wear-resistant lining plates 12. The material density of wear-resistant lining plates 12 is greater than that of inner ball core 1, and the value exceeds 1.2 times.

[0026] A hexagonal prism structure 1b-1 is arranged on the periphery of the nut 1b. When assembling the nut 1b, a tool can be used to clamp or sleeve the hexagonal prism structure 1b-1. The outermost end of the nut 1b is closed and provided with a hemispherical wear-resistant head 1b-2. The wear-resistant nut 1b participates in the crushing and grinding of the material. In order to enhance the crushing and grinding performance of the alloy steel ball, the outer surface of the wear-resistant liner plate 23 is provided with densely distributed high-strength triangular ridges 3a. Combined with the raised wear-resistant nut 1b, the concave-convex surface effectively improves the crushing and grinding performance.

[0027] The above description is only a preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present utility model, changes, modifications or additions should all fall within the protection scope of the present utility model.

Claims

1. A wear-resistant alloy steel ball, characterized in that: The invention comprises an inner spherical core (1), wherein the outer surface of the inner spherical core (1) is provided with a wear-resistant lining plate 1 (2) and a wear-resistant lining plate 2 (3), each wear-resistant lining plate 1 (2) is surrounded by five wear-resistant lining plates 2 (3), and each wear-resistant lining plate 2 (3) is surrounded by three wear-resistant lining plates 1 (2); the wear-resistant lining plate 2 (3) protrudes out of the wear-resistant lining plate 1 (2), and the outer surface of the inner spherical core (1) is provided with a threaded rod (1a) extending outward, and the threaded rod (1a) passes through the wear-resistant lining plate 2 (3) and is provided with a nut (1b) at the outermost end.

2. A wear-resistant alloy steel ball according to claim 1, characterized in that: A shock-absorbing layer (4) is provided between the wear-resistant liner plate 2 (3) and the inner core (1); the wear-resistant liner plate 2 (3) protrudes from the wear-resistant liner plate 1 (2) by 1 to 3 mm in thickness; and a bolt through hole (3b) is provided in the center of each wear-resistant liner plate 2 (3).

3. A wear-resistant alloy steel ball according to claim 2, characterized in that: The number of the wear-resistant liner plate 2 (3) is greater than that of the wear-resistant liner plate 1 (2); the HRC of the wear-resistant liner plate 2 (3) is equal to that of the nut (1b) but greater than that of the wear-resistant liner plate 1 (2); and the density of the wear-resistant liner plate 1 (2) is greater than that of the inner ball core (1).

4. The wear-resistant alloy steel ball according to claim 3, characterized in that: The nut (1b) is provided with a hexagonal prism structure (1b-1) on the periphery, and a hemispherical wear-resistant head (1b-2) is provided at the outermost end.

5. The wear-resistant alloy steel ball according to claim 4, characterized in that: The outer surface of the second wear-resistant lining plate (3) is provided with densely distributed triangular ridges (3a).

6. The wear-resistant alloy steel ball according to claim 1, characterized in that: The central axis of each threaded rod (1a) passes through the center of the inner spherical core (1).

7. The wear-resistant alloy steel ball according to claim 2, characterized in that: The shock-absorbing layer (4) is a flexible, compressible rubber with a thickness of 1 mm to 3 mm.

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