High-strength, wear-resistant, and toughened ceramic mesh

Abstract

This utility model discloses a high-strength, wear-resistant, and toughened ceramic mesh. It is rectangular in shape and fixed at intervals between two guide rails on the upper part of a hopper, forming several feed inlets. The ceramic mesh includes a steel frame, within which a rubber vulcanized layer is disposed. Several parallel ceramic mesh units are fixedly arranged within the rubber vulcanized layer along the length of the steel frame. T-shaped reinforcing frames are fixedly arranged at intervals on the bottom surface of the steel frame. Connecting parts are provided on the bottom surface of each ceramic mesh unit, and the ceramic mesh units are fixedly connected to the rubber vulcanized layer through these connecting parts. The top wear-resistant surface of each ceramic mesh unit is curved. This high-strength, wear-resistant, and toughened ceramic mesh not only has low material cost and is easy to manufacture, but also exhibits wear and corrosion resistance. Furthermore, it forms a robust and highly buffering anti-wear feed inlet, effectively reducing the impact and wear of materials on hoppers and other equipment, extending the service life of the hopper, and improving production efficiency and quality.

Description

Technical Field

[0001] This utility model relates to wear-resistant parts for mining, and in particular to wear-resistant parts for the feed inlet of equipment such as connecting hoppers in mining. Background Technology

[0002] In industries such as mining and metallurgy, hoppers are common material conveying equipment. They can transport materials such as coal, ore, and sand from one place to another, and can also perform various operations such as sorting, weighing, and counting. They are widely used in various industries. To ensure that the material unloaded from the trolley moving on the guide rail does not fall directly into the hopper from a height, several feed inlets formed by welding cast iron wear-resistant plates at intervals are set on the hopper. The material passes through the buffer of the feed inlets before entering the hopper. Because the material first contacts the cast iron wear-resistant plates in the feed inlets before falling into the hopper, the impact wear of the material on the hopper is reduced, the service life of the hopper is extended, and the goal of reducing production costs and improving production efficiency is achieved. However, the feed inlet formed by cast iron wear-resistant plates has low strength, is prone to rust, and has low wear resistance. Therefore, it cannot form a robust and highly buffering anti-wear component, and cannot effectively reduce the impact and wear of materials on hoppers and other equipment. As a result, it will shorten the service life of the hopper and reduce production efficiency and quality. Utility Model Content

[0003] To address the problems existing in the feed inlet formed by cast iron wear-resistant plates in the above-mentioned prior art, this utility model provides a new feed inlet that can replace cast iron wear-resistant plates. It not only has lower material costs and is easy to manufacture, but is also wear-resistant and corrosion-resistant. Furthermore, it can form a robust and highly buffering anti-wear feed inlet, which can effectively reduce the impact and wear of materials on hoppers and other equipment, extend the service life of hoppers, and improve production efficiency and quality.

[0004] The technical solution adopted by this utility model to solve the technical problem is: a high-strength, wear-resistant, and toughened ceramic mesh, which is rectangular in shape and fixed at intervals between two guide rails at the top of the hopper to form several feed inlets. The ceramic mesh includes a rectangular steel frame, in which a rubber vulcanized layer is provided. Several parallel ceramic mesh units are fixedly arranged in the rubber vulcanized layer along the length of the steel frame. T-shaped reinforcing frames are fixedly arranged at intervals on the bottom surface of the steel frame. A connecting part is integrally provided on the bottom surface of the ceramic mesh unit. The cross-section of the connecting part is a concave annular shape. At least half of the lower half of the ceramic mesh unit is covered with a rubber vulcanized layer in the height direction. The ceramic mesh unit is fixedly connected to the rubber vulcanized layer through the connecting part. The wear-resistant surface of the top of the ceramic mesh unit is an arc surface.

[0005] This utility model uses a rubber vulcanization process to create a rubber vulcanization layer: first, raw rubber sheets are mixed, then the rubber sheets are cut and placed into a steel frame that has been prepared and coated with rubber adhesive. Ceramic mesh units that have been coated with rubber adhesive are placed on the rubber layer. The entire steel frame is placed into a flat vulcanizing machine and vulcanized under 250 tons of pressure and 120°C high temperature and high pressure to form a rubber vulcanization layer. Through the rubber vulcanization layer, the ceramic mesh units and the rubber vulcanization layer form a wear-resistant composite whole with cushioning properties (the composite whole is a high-strength, wear-resistant, and toughened ceramic mesh).

[0006] The ceramic mesh unit is a high-strength, wear-resistant, and toughened ceramic, containing ≥20%wt zirconium oxide, ≥70%wt alumina, and the remainder as auxiliary materials. The ceramic mesh unit's specifications are: specific gravity ≥4.15 g / cm³. 3　 Rockwell hardness: ≥90 HRA, water absorption: ≤0.01%, compressive strength: ≥2000MPa, flexural strength: ≥450MPa, fracture toughness (KIC±20℃, ≥5MPaM1 / 2).

[0007] The rubber vulcanized layer described in this utility model is made using existing rubber vulcanization technology. It involves heating the rubber and reacting it with a vulcanizing agent, causing cross-linking between rubber molecules, thereby improving the rubber's strength, abrasion resistance, and aging resistance. The vulcanization process includes the following steps:

[0008] 1. Raw material preparation: Prepare the rubber raw materials and vulcanizing agent, weigh and mix them according to the formula requirements.

[0009] 2. Mixing: The rubber raw materials and vulcanizing agent are placed in a mixing machine for mixing. The purpose of mixing is to evenly mix the rubber and vulcanizing agent, and heat to a certain temperature to soften the rubber and increase its fluidity.

[0010] 3. Vulcanization: The mixed rubber is placed in a vulcanizing machine for vulcanization. The purpose of vulcanization is to use heat to react the rubber with the vulcanizing agent, forming a cross-linked structure. Vulcanizing machines typically use high temperature and high pressure conditions; the heating time depends on the type of rubber and product requirements.

[0011] 4. Cooling: After vulcanization, the rubber product is removed from the vulcanizing machine for cooling. The purpose of cooling is to allow the rubber product to cool and solidify rapidly in order to maintain its shape and size.

[0012] This invention firstly forms a high-strength, wear-resistant, and aging-resistant rubber vulcanization layer within a steel frame using a rubber vulcanization process. Secondly, it utilizes integrally formed connecting parts and guide heads on each ceramic mesh unit. The grooves on the connecting parts allow the rubber in the vulcanized layer to be squeezed and embedded into the grooves of the connecting parts, thereby improving the connection strength between the ceramic mesh unit and the rubber vulcanization layer. Furthermore, the lower half of each ceramic mesh unit is covered with a rubber vulcanization layer, and the height of this layer is no less than half the height of the ceramic mesh unit. Specifically, the outer surfaces of the lower half of the ceramic mesh units located at the left and right ends are covered with a rubber vulcanization layer, while the outer surfaces of the lower half of the ceramic mesh units located at the front and rear ends (i.e.,...) are also covered. Figure 3 The ceramic mesh (with its side surfaces below 8 mm) is covered by a rubber vulcanized layer. This allows the wear-resistant surfaces on both sides of the ceramic mesh to form feed inlets, and ensures that the feed inlets formed by the ceramic mesh are firmly fixed to the rubber vulcanized layer during prolonged friction, collision, and impact with materials, forming a robust and highly buffered wear-resistant feed inlet. This effectively reduces the impact and wear of materials on hoppers and other equipment (the wear resistance and impact resistance of the feed inlet formed by the ceramic mesh in this invention is more than 5 times that of several feed inlets formed by intermittent welding of cast iron wear-resistant plates). Therefore, it can extend the service life of the hopper and improve production efficiency and quality. Furthermore, by providing a reinforcing frame within the steel frame, the rubber vulcanized layer and the steel frame can be more firmly bonded together, preventing the rubber vulcanized layer from loosening within the steel frame. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main cross-sectional structure of this utility model.

[0014] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure.

[0015] Figure 3 yes Figure 1 Schematic diagram of the BB cross-section structure.

[0016] In the diagram, 1. Steel frame; 2. Connecting part; 3. Ceramic mesh unit; 4. Guide head; 5. Rubber vulcanized layer; 6. Reinforcing frame; 7. Top wear-resistant surface; 8. Side wear-resistant surface; 9. Buffer gap. Detailed Implementation

[0017] In the diagram, a high-strength, wear-resistant, and toughened ceramic mesh is fixed at intervals between two guide rails on the upper part of the hopper, forming several feed inlets. Material from the moving carts on the guide rails is fed into the hopper through these inlets, and then distributed to the output belt for long-distance transport. The ceramic mesh is rectangular (1580mm long, 100mm high, 100mm wide). It includes a rectangular steel frame 1, which is an open-top box. The left and right ends of the steel frame are 100mm high (the individual ceramic mesh units at the left and right ends are flush with the steel frame after being pressed in). The front and back sides of the steel frame are 50-55mm high. A rubber vulcanized layer 5 is installed inside the steel frame, extending along the 1580mm... Eight parallel ceramic mesh units 3 are fixed along the length of the steel frame. T-shaped steel reinforcing frames 6 are pre-embedded and fixed (welded or screwed) at intervals (300-500mm) on the bottom surface of the steel frame. The height of the reinforcing frames is 15-20mm. Each ceramic mesh unit has an integrally formed connecting part 2 on its bottom surface. The connecting part has a concave annular cross-section, and one end of the connecting part is a tapered guide head 4. The guide head facilitates the pressing of the ceramic mesh unit into the rubber vulcanization layer. The connecting part and the guide head are all pre-embedded in the rubber vulcanization layer. The rubber vulcanization layer is sequentially fixedly connected to the ceramic mesh unit through the connecting part and the guide head. The upper half of the ceramic mesh unit has two wear-resistant sides 8, while the lower half has two wear-resistant sides (i.e.,...) Figure 3 The sides below the middle wear-resistant surface 8 are covered with a rubber vulcanized layer at least half in height. The front and rear sides of the upper half of the ceramic mesh unit forming the feed inlet are the side wear-resistant surfaces 8 (plane). The feed inlet size is approximately 1500mm × (600-800)mm. The top wear-resistant surface 7 of the ceramic mesh unit is an arc surface. A buffer gap 9 of 0.8-1mm is left between the ceramic mesh unit and the rubber vulcanized layer in the length direction (so that the ceramic mesh units at both ends in the length direction can preferably have a slight vertical bounce when impacted).

[0018] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to specific embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of protection of the claims of this utility model.

Claims

1. A high-strength, wear-resistant, and toughened ceramic mesh, which is rectangular in shape and fixed at intervals between two guide rails at the top of the hopper to form several feed inlets, is characterized by: The ceramic mesh includes a rectangular steel frame (1), a rubber vulcanized layer (5) is provided inside the steel frame, and several parallel ceramic mesh units (3) are fixedly arranged inside the rubber vulcanized layer along the length of the steel frame. T-shaped reinforcing frames (6) are fixedly arranged at intervals on the bottom surface of the steel frame. A connecting part (2) is integrally arranged on the bottom surface of the ceramic mesh unit. The cross-section of the connecting part is a concave ring. At least half of the lower half of the ceramic mesh unit is covered with a rubber vulcanized layer in the height direction. The ceramic mesh unit is fixedly connected to the rubber vulcanized layer through the connecting part. The top wear-resistant surface (7) of the ceramic mesh unit is an arc surface.

2. The high-strength, wear-resistant, and toughened ceramic mesh according to claim 1, characterized in that: The lower end of the connecting part (2) is integrally provided with a tapered guide head (4).

3. The high-strength, wear-resistant, toughened ceramic lattice of claim 1, wherein: The ceramic mesh unit (3) has a buffer gap (9) of 0.8-1mm between it and the rubber vulcanization layer in the length direction.

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