Lining plate for sintered ore belt conveyor hopper

Abstract

The invention relates to a lining plate for a sintered ore belt conveyor hopper, the lining plate comprises a lining plate base, a clamping groove cover plate and a wear-resistant block, the lining plate base is provided with a clamping groove and a threaded hole, the wear-resistant block is arranged in the clamping groove, and the clamping groove cover plate is fixedly connected with the lining plate base through bolts. The lining plate is simple in structure, safe to use, not prone to falling off to cause belt tearing accidents, long in service life and capable of saving a large amount of lining plate cost for enterprises, and the service life is two years or above.

Description

Technical Field

[0001] This invention relates to a liner, specifically a liner for a sintered ore conveyor belt hopper, belonging to the field of industrial products technology. Background Technology

[0002] Belt conveyor hopper liners are important industrial components, primarily used to improve the wear resistance and service life of equipment. The main function of belt conveyor hopper liners is to reduce the direct impact and friction of materials on the hopper, thereby protecting the hopper body from damage and improving material conveying efficiency. These liners are typically made of wear-resistant materials, such as wear-resistant steel plate liners, polymer material liners, ceramic liners, polyurethane liners, cast stone liners, and high-chromium cast iron liners, possessing properties such as wear resistance, impact resistance, and corrosion resistance. Different types of liners are suitable for different working environments and material characteristics. During use, it is necessary to select the appropriate type based on different working conditions and material characteristics to ensure optimal wear resistance and the longest service life.

[0003] Currently, the belt conveyor hoppers used in the metallurgical industry for transporting sintered ore mainly use two types of liners available on the market: high-chromium cast iron liners and impact-resistant and wear-resistant ceramic liners. However, in practice, these two types of liners have shortcomings in applications where material drop varies significantly. Firstly, they are relatively expensive, with a 300×400×30mm thick liner costing around 400 yuan. Secondly, their service life is short, only 4-5 months, which cannot meet the requirements of the long, stable operation cycle of blast furnaces and often fails to keep up with the scheduled maintenance cycle of the blast furnace feeding system. The high cost of the liners, the poor maintenance environment, and the high labor intensity required for replacement all contribute to the problem.

[0004] Furthermore, the ceramic liner in these two types of liners is fragile, and the high-chromium cast iron liner is prone to detachment after the fixing bolts wear down. There have been several incidents of liner detachment causing belt tearing accidents. Therefore, a new solution is urgently needed to address this technical problem. Summary of the Invention

[0005] This invention addresses the technical problems existing in the prior art by providing a liner plate for the hopper of a sintered ore conveyor belt. This technical solution has the characteristics of high strength, impact resistance, wear resistance, corrosion resistance, strong adsorption performance, and high temperature resistance. The L-shaped liner plate for the hopper of a sintered ore conveyor belt provides convenient installation, is not easy to fall off, and has a long service life (more than 2 years).

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a liner plate for a sintered ore conveyor belt hopper, the liner plate comprising an L-shaped liner plate base, a slot cover plate, and a wear-resistant block, wherein the liner plate base is provided with a slot and a threaded hole, the wear-resistant block is disposed in the slot, and the slot cover plate is connected and fixed to the liner plate base by bolts.

[0007] The base of the liner is designed to be L-shaped.

[0008] The card slot cover is designed in a 7-shape and is fixed in place with an L-shaped liner base.

[0009] The L-shaped liner structure has the following dimensions: length 340mm × width 150mm × height 100mm × thickness 20mm. The slot design has the following dimensions: length 67mm × width 56mm × height 36mm × thickness 10mm. The wear-resistant block has the following dimensions: length 65mm × width 53mm × height 35mm. The 7-shaped slot cover has the following dimensions: length 340mm × width 78mm × height 57mm × thickness 1mm.

[0010] The installation steps for the liner are as follows:

[0011] Step 1: For sinter conveyor belt hoppers already in use, remove all lining plates from the inner walls of the hoppers.

[0012] Step 2: Cut the material according to the hopper's structural dimensions; cut strip steel plates 150mm wide and 10mm thick, with the length determined by the actual internal dimensions of the hopper.

[0013] Step 3: Cut right-angled triangular support ribs, with the hypotenuse length > 120 ≤ 125 mm.

[0014] Step 4: Install the strip steel plate, making a 90° angle with the hopper wall, and fully weld the contact points on both sides.

[0015] Step 5: Install and weld triangular support ribs at 100mm intervals on the reverse side of the strip steel plates. Fully weld the ribs to both sides of the hopper body and the strip steel plates.

[0016] Step Six: Based on the bolt hole spacing dimensions on the "L-shaped" liner, drill bolt mounting holes in the strip steel plate.

[0017] Step 7: Place the "L-shaped" high-strength impact-resistant liner on the strip steel plate and tighten the liner fixing bolts.

[0018] Compared with the prior art, the present invention has the following advantages: this special liner plate for sintered ore conveyor belt hopper is easy to manufacture in a standardized manner, easy to install, safe to use, not easy to fall off and cause belt tearing accidents, and has a service life of more than 2 years. The service life of the liner plate is more than 4 times that of the prior art, which can save enterprises a lot of liner plate costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the special liner plate for the hopper of a sintered ore conveyor belt;

[0020] Figure 2 , 3 This is a design dimension drawing of a special liner plate for the hopper of a sintered ore conveyor belt;

[0021] Figure 4 This is an installation diagram of the special liner plate for the hopper of a sintering ore conveyor belt.

[0022] In the diagram: 1. Liner base, 2. Slot, 3. Threaded hole, 4. Wear-resistant block, 5. Slot cover plate, 6. Bolt hole, 7. Hopper wall, 8. Composite liner, 9. Strip steel plate, 10. Right-angled triangular support rib, 11. Liner fixing bolt. Detailed Implementation

[0023] To enhance understanding of the present invention, the embodiments will be described in detail below with reference to the accompanying drawings.

[0024] Example 1: See Figure 1 , Figure 2 A liner plate for a sintered ore conveyor belt hopper, the liner plate includes an L-shaped liner plate base 1, a slot cover plate 6, and a wear-resistant block 5. The liner plate base 1 is provided with a slot 2 and a threaded hole 3. The wear-resistant block is placed in the slot. The slot cover plate is connected and fixed to the liner plate base by bolts.

[0025] The base of the liner is designed to be L-shaped.

[0026] The card slot cover is designed in a 7-shape and is fixed in place with an L-shaped liner base.

[0027] Example 2: As Figure 2 , 3 As shown, the design parameters for a liner plate specifically for a sintered ore conveyor belt hopper are as follows: the liner plate's external dimensions are 340mm long, 150mm wide, 100mm high, and 20mm thick; the wear-resistant block slot design has each slot measuring 67mm long, 56mm wide, 36mm high, and 10mm thick; each high-strength, impact-resistant, and wear-resistant block is approximately 65mm long, 53mm wide, and 35mm high; and each "7-shaped" slot cover plate is 340mm long, 78mm wide, 57mm high, and 1mm thick.

[0028] Installation requirements, working principle, and product performance parameters of this invention:

[0029] Please refer to Figure 4 This includes the following steps:

[0030] Step 1: Weld steps onto the main body of the conveyor belt hopper using strip-shaped Q235B steel plates with a width of 150mm and a thickness of 10mm. The spacing between the steps is 250mm per layer. The length of the steps is set according to the actual size of the hopper. Double-sided fillet welding is used at the contact point between the strip-shaped steel plate and the steps, and the weld thickness is ≥2mm.

[0031] Step Two: After the steps are welded, right-angled triangular support plates are welded underneath to provide secondary reinforcement and effectively prevent structural collapse. The contact points between the triangular support plates and the strip steel plates and hopper wall steel plates are double-sided fillet welds, with a weld thickness ≥ 2mm. Triangular support plate arrangement requirements: ≤ 2 support plates should be arranged within a 340mm length of the step steel plate.

[0032] Step 3: Requirements for the arrangement of triangular stiffener plates: Within 340mm of the step steel plate length, the number of stiffener plates should be ≤2.

[0033] Step 4: Drill holes on the step plate according to the bolt hole spacing of the liner plate.

[0034] Step 5: Install the liner plates, leaving a 5mm gap between each liner plate for easy disassembly and reassembly. After the liner plates are installed, tighten the bolts, and spot weld the nuts to the protruding parts of the bolts to prevent the bolts from loosening due to material flow impact and vibration.

[0035] Working principle of L-shaped high-strength composite liner:

[0036] When material impacts the liner steps, material accumulates, forming a protective layer that covers the entire working surface of the liner. However, under the continuous impact of the material flow's potential energy, this protective layer is gradually eroded and broken down by the sintered ore particles, causing wear to begin on the outer edge of the "L-shaped" liner. To address this issue, this design incorporates a high-strength adsorption material into the liner fabrication process, taking into account the typical iron content of sintered ore (60%-70%). This ensures that the sintered ore powder remains coated on the liner surface, maintaining a powder thickness of 20-25 mm. Due to magnetic properties, the coating layer has a self-healing function, preventing wear caused by direct contact and impact between the liner surface and the material.

[0037] Product performance parameters

[0038] Mn content ≤ 2.00%, Ni content 8-10%, Cr content 18-20%, Fe3O4 content ≥ 25%, Rockwell hardness ≥ 60.1 HRC, compressive strength ≥ 400 MPa.

[0039] It should be noted that the above embodiments are not intended to limit the scope of protection of the present invention. Equivalent transformations or substitutions made based on the above technical solutions all fall within the scope of protection of the claims of the present invention.

Claims

1. A liner plate for a sintered ore conveyor belt hopper, characterized in that, The liner includes a liner base, a slot cover, and a wear-resistant block. The liner base is provided with a slot and a threaded hole. The wear-resistant block is placed in the slot. The slot cover is connected and fixed to the liner base by bolts.

2. The liner for the hopper of a sintered ore conveyor belt according to claim 1, characterized in that, The overall shape of the liner base is set as L-shaped.

3. The liner for the hopper of a sintered ore conveyor according to claim 2, characterized in that, The card slot cover is designed in a 7-shape and is fixed in place with an L-shaped liner base.

4. The liner for the hopper of a sintered ore conveyor belt according to claim 1, characterized in that, Each L-shaped liner has the following dimensions: length 340mm × width 150mm × height 100mm × thickness 20mm. Each slot has the following dimensions: length 67mm × width 56mm × height 36mm × thickness 10mm. Each wear-resistant block has the following dimensions: length 65mm × width 53mm × height 35mm. Each 7-shaped slot cover has the following dimensions: length 340mm × width 78mm × height 57mm × thickness 1mm.

5. The liner for the hopper of a sintered ore conveyor according to claim 1, 2, or 3, characterized in that, The installation steps for the liner are as follows: Step 1: For sinter conveyor belt hoppers already in use, remove all lining plates from the inner walls of the hoppers. Step 2: Cut the material according to the hopper's structural dimensions; cut strip steel plates 150mm wide and 10mm thick, with the length determined by the actual internal dimensions of the hopper. Step 3: Cut right-angled triangular support ribs, with the hypotenuse length > 120 ≤ 125 mm. Step 4: Install the strip steel plate, making a 90° angle with the hopper wall, and fully weld the contact points on both sides. Step 5: Install and weld triangular support ribs at 100mm intervals on the reverse side of the strip steel plates. Fully weld the ribs to both sides of the hopper body and the strip steel plates. Step Six: Based on the bolt hole spacing dimensions on the "L-shaped" liner, drill bolt mounting holes in the strip steel plate. Step 7: Place the "L-shaped" high-strength impact-resistant liner on the strip steel plate and tighten the liner fixing bolts.

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