Centrifugal casting octahedral grinding ball

Abstract

The utility model belongs to the technical field of centrifugal casting, particularly relates to a centrifugal casting octahedral grinding ball, and provides the following scheme aiming at the problems that most existing grinding balls are spheroidal, so that most motion trails are parabolas during impact, the impact behavior is lack of variability, and the crushing efficiency is reduced, the centrifugal casting octahedral grinding ball comprises an octahedral grinding ball body, the octahedral grinding ball body comprises a wear-resistant layer, a compression-resistant layer is cast on the inner side of the wear-resistant layer, a buffer layer is cast on the inner side of the compression-resistant layer, a plurality of steel balls are uniformly arranged in the buffer layer, a connecting layer is cast on the inner side of the buffer layer, and the cross section of the octahedral grinding ball body is an equilateral hexagon. According to the utility model, the grinding balls are arranged to be octahedral, so that when the ball mill is driven, the masses of the peripheral sides of the octahedral grinding balls are inconsistent, so that the impact motion trail does not form a uniform trail but becomes an irregular displacement trail, the aim of impacting materials from multiple directions is fulfilled, and the crushing efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal casting, in particular to a centrifugal casting octahedral grinding ball. Background Art

[0002] Cast grinding balls are commonly used wear-resistant materials in the building materials, chemical, metallurgical, mineral processing, cement, thermal power and other industries. They are favored by large enterprise groups for their excellent wear resistance. Centrifugal casting is a casting method that pours liquid metal into a rotating mold, allowing the liquid metal to fill the mold and solidify under the action of centrifugal force. In order to achieve the above process, a centrifugal casting machine must be used to create conditions for the mold to rotate. According to the different spatial positions of the mold's rotating axis, steel balls and casting balls made by vertical centrifugal casting machines are commonly used. Due to centrifugal motion, the liquid metal can fill the mold well in the radial direction and form a free surface of the casting; it helps to remove gas and inclusions in the liquid metal; it affects the crystallization process of the metal, thereby improving the mechanical and physical properties of the casting.

[0003] Ball mill is a key equipment that uses grinding balls to crush materials after they are crushed. It is widely used in cement, silicate products, new building materials, refractory materials, fertilizers, ferrous and non-ferrous metal beneficiation, glass and ceramics and other production industries.

[0004] Most existing grinding balls are spherical, resulting in parabolic motion trajectories during impact, which leads to a lack of variability in impact behavior and reduces crushing efficiency. Therefore, we propose a centrifugally cast octahedral grinding ball to solve the above problem. Utility Model Content

[0005] The utility model aims to solve the shortcoming of small change amount of impact trajectory and proposes a centrifugally cast octahedral grinding ball.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a centrifugally cast octahedral grinding ball, comprising an octahedral grinding ball body, the octahedral grinding ball body comprising a wear-resistant layer, a pressure-resistant layer is cast on the inner side of the wear-resistant layer, a buffer layer is cast on the inner side of the pressure-resistant layer, a plurality of steel balls are evenly arranged inside the buffer layer, and a connecting layer is cast on the inner side of the buffer layer.

[0007] Preferably, the cross section of the octahedral grinding ball body is an equilateral hexagon.

[0008] Preferably, the wear-resistant layer is made of chromium-nickel alloy steel.

[0009] Preferably, the compression-resistant layer is made of manganese alloy.

[0010] Preferably, the buffer layer is made of carbon structural steel.

[0011] Preferably, the connecting layer is made of low carbon steel.

[0012] Preferably, the octahedral grinding ball body further comprises a plurality of supporting iron blocks uniformly cast inside the connecting layer, and a hollow pressure relief hole is opened inside the connecting layer.

[0013] In the utility model, the centrifugally cast octahedral grinding ball is:

[0014] 1. The utility model sets the grinding ball to be octahedral, so that when the ball mill is driven, the mass of the octahedral grinding ball is inconsistent, so that the motion trajectory of the impact does not form a unified trajectory, but becomes an irregular displacement trajectory, so as to achieve the purpose of impacting the material from multiple directions and effectively improve the crushing efficiency;

[0015] 2. The utility model arranges a wear-resistant layer and a pressure-resistant layer on the outside of the octahedral grinding ball body and arranges a buffer layer on the inside to increase the impact force of the octahedral grinding ball body when it falls and hits the material, and can rely on the buffer layer to buffer the reaction force to avoid the problem of self-damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a centrifugally cast octahedral grinding ball proposed by the utility model;

[0017] Figure 2 The utility model discloses a schematic structural diagram of the inner part of a centrifugally cast octahedral grinding ball.

[0018] In the figure: 1, octahedral grinding ball body; 101, wear-resistant layer; 102, pressure-resistant layer; 103, buffer layer; 104, steel ball; 105, connecting layer; 106, supporting iron block; 107, hollow pressure relief hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-2 A centrifugally cast octahedral grinding ball comprises an octahedral grinding ball body 1, the octahedral grinding ball body 1 comprises a wear-resistant layer 101, a pressure-resistant layer 102 is casted on the inner side of the wear-resistant layer 101, a buffer layer 103 is cast on the inner side of the pressure-resistant layer 102, a plurality of steel balls 104 are evenly arranged inside the buffer layer 103, and a connecting layer 105 is cast on the inner side of the buffer layer 103.

[0021] In this embodiment, the cross section of the octahedral grinding ball body 1 is an equilateral hexagon.

[0022] By adopting the above solution, the cross section of the octahedral grinding ball body 1 is made into an equilateral hexagon, so as to increase the force-bearing area of ​​the octahedral grinding ball body 1, avoid that only one point contacts the material during impact, and effectively improve the efficiency of impact damage.

[0023] In this embodiment, the wear-resistant layer 101 is made of chromium-nickel alloy steel.

[0024] By adopting the above solution, the wear-resistant layer 101 is made of chromium-nickel alloy steel, so that the wear resistance of the wear-resistant layer 101 is increased through the material properties.

[0025] In this embodiment, the pressure-resistant layer 102 is made of manganese alloy.

[0026] By adopting the above solution, the pressure-resistant layer 102 is made of manganese alloy, which effectively increases the impact resistance of the pressure-resistant layer 102, effectively improves the service life of the equipment, and reduces the problem of deformation.

[0027] In this embodiment, the buffer layer 103 is made of carbon structural steel.

[0028] By adopting the above solution, the buffer layer 103 is made of carbon structural steel to ensure the buffering capacity of the buffer layer 103, avoid the problem that the octahedral grinding ball body 1 cannot reduce the reaction force it receives, and greatly increase the service life and safety of the equipment.

[0029] In this embodiment, the connection layer 105 is made of low carbon steel.

[0030] By adopting the above solution, the filling and connecting behaviors are achieved by making the connecting layer 105 of low carbon steel.

[0031] In this embodiment, the octahedral grinding ball body 1 further includes a plurality of supporting iron blocks 106 uniformly cast inside the connecting layer 105 , and a hollow pressure relief hole 107 is opened inside the connecting layer 105 .

[0032] By adopting the above scheme, a number of supporting iron blocks 106 are evenly cast inside the connecting layer 105, so that the ability of the connecting layer 105 to resist external impact force is increased through the supporting iron blocks 106, and the problem of collapse of the connecting layer 105 under the action of the extrusion force is avoided. In addition, the inner side of the connecting layer 105 is set to a hollow pressure relief hole 107 with a hollow shape, and the internal pressure relief hole 107 is used to buffer and release the internal stress, so as to avoid the problem of internal fracture caused by excessive pressure, thereby greatly increasing the service life of the equipment.

[0033] In the utility model, when in use, the wear-resistant layer 101 reduces the wear of the outside of the octahedral grinding ball body 1, and the pressure-resistant layer 102 made of manganese alloy effectively increases the impact resistance of the octahedral grinding ball body 1, effectively improves the service life of the equipment, and reduces the problem of deformation. The buffer layer 103 buffers and reduces the reaction force.

[0034] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A centrifugally cast octahedral grinding ball, comprising an octahedral grinding ball body (1), characterized in that: The octahedral grinding ball body (1) comprises a wear-resistant layer (101), a pressure-resistant layer (102) is cast on the inner side of the wear-resistant layer (101), a buffer layer (103) is cast on the inner side of the pressure-resistant layer (102), a plurality of steel balls (104) are evenly arranged inside the buffer layer (103), and a connecting layer (105) is cast on the inner side of the buffer layer (103).

2. The centrifugally cast octahedral grinding ball according to claim 1, characterized in that: The cross section of the octahedral grinding ball body (1) is an equilateral hexagon.

3. The centrifugally cast octahedral grinding ball according to claim 1, characterized in that: The wear-resistant layer (101) is made of chromium-nickel alloy steel.

4. The centrifugally cast octahedral grinding ball according to claim 1, characterized in that: The pressure-resistant layer (102) is made of manganese alloy.

5. The centrifugally cast octahedral grinding ball according to claim 1, characterized in that: The buffer layer (103) is made of carbon structural steel.

6. The centrifugally cast octahedral grinding ball according to claim 1, characterized in that: The connecting layer (105) is made of low carbon steel.

7. The centrifugally cast octahedral grinding ball according to claim 1, characterized in that: The octahedral grinding ball body (1) further comprises a plurality of supporting iron blocks (106) uniformly cast inside the connecting layer (105), and a hollow pressure relief hole (107) is opened inside the connecting layer (105).

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