Elbow with high wear resistance

Abstract

The utility model discloses a bend with high wear resistance on the surface. The utility model discloses a bend main part, the bend main part bottom is provided with flange no. 1, the bend main part upper end is provided with flange no. 2, the bend main part includes bend base body, composite wear -resisting layer, bionic honeycomb buffer layer and antirust coating, the composite wear -resisting layer is located inside bend base body, bionic honeycomb buffer layer is located between bend base body and composite wear -resisting layer, bionic honeycomb buffer layer and bend base body and composite wear -resisting layer fixed connection, the antirust coating is located the outer surface of bend base body, bionic honeycomb buffer layer adopts aluminium alloy material and is made through 3D printing technology, and its structure imitates the hexagonal honeycomb hole shape of honeycomb, can make the bend under various complex conditions all can keep good wear resistance through high hardness ceramic layer, metal ceramic layer, macromolecular wear -resisting layer. Compared with the traditional bend, under the same working condition, the wear -resisting life of the utility model bend can improve 3 to 5 times.

Description

Technical Field

[0001] This utility model relates to the field of pipe fittings technology, specifically to an elbow with a highly wear-resistant surface. Background Technology

[0002] In industrial production, elbows, as important components in pipeline systems for changing pipeline direction, are widely used in various material conveying scenarios. In the petrochemical industry, elbows need to withstand the scouring of petroleum fluids containing particulate impurities; in the mining and metallurgical industries, elbows must cope with the high-speed impact of high-concentration slurries, mineral powders, and other materials; in the power industry's pulverized coal conveying pipelines, elbows also face the continuous wear and tear of pulverized coal.

[0003] Currently, many elbows commonly found on the market have issues with wear resistance. Traditional metal elbows, such as carbon steel elbows and ordinary alloy steel elbows, although possessing a certain degree of strength and toughness, are prone to surface wear and scratches under long-term exposure to material erosion, friction, and impact. This can lead to thinning of the wall thickness, ultimately causing pipeline leaks and affecting production safety and efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an elbow with a highly wear-resistant surface to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an elbow with high wear resistance, comprising: an elbow body, a flange one provided at the bottom end of the elbow body, a flange two provided at the upper end of the elbow body, the elbow body including an elbow substrate, a composite wear-resistant layer, a biomimetic honeycomb buffer layer and an anti-rust coating, the composite wear-resistant layer being located inside the elbow substrate, the biomimetic honeycomb buffer layer being located between the elbow substrate and the composite wear-resistant layer, the biomimetic honeycomb buffer layer being fixedly connected to the elbow substrate and the composite wear-resistant layer, and the anti-rust coating being located on the outer surface of the elbow substrate. The biomimetic honeycomb buffer layer is made of aluminum alloy material using 3D printing technology, and its structure imitates the hexagonal honeycomb cell shape of a honeycomb.

[0006] Furthermore, the composite wear-resistant layer includes a high-hardness ceramic layer, a metal-ceramic layer, and a polymer wear-resistant layer, wherein the high-hardness ceramic layer is the innermost layer, the metal-ceramic layer is the middle layer, and the polymer wear-resistant layer is the outermost layer.

[0007] Furthermore, the high-hardness ceramic layer is made of nano-scale alumina ceramic material.

[0008] Furthermore, the metal-ceramic layer is prepared by mixing nickel-based alloy powder and tungsten carbide particles in a certain proportion using a laser cladding process.

[0009] Furthermore, the polymer wear-resistant layer is made of ultra-high molecular weight polyethylene.

[0010] Furthermore, a fixed cylinder is fixedly connected to the outer surface of the elbow body, and a lead screw is rotatably connected inside the fixed cylinder.

[0011] Furthermore, a rotating block is fixedly connected to the upper end of the lead screw, and a nut is threadedly connected to the circumferential side of the lead screw.

[0012] Furthermore, a disassembly plate is slidably connected to the inner surface of the elbow body, and a threaded cylinder is fixedly connected to the outer surface of the disassembly plate. The threaded cylinder is threadedly connected to a lead screw. A spring is fixedly connected inside the bionic honeycomb buffer layer. The spring is fixedly connected to the bionic honeycomb buffer layer, and the bionic honeycomb buffer layer abuts against the outer surface of the disassembly plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention utilizes a high-hardness ceramic layer, a cermet layer, and a polymer wear-resistant layer to ensure that the elbow maintains excellent wear resistance under various complex working conditions. Compared with traditional elbows, the wear life of the elbow of this invention can be increased by 3 to 5 times under the same working conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front view structure in one embodiment of the present invention;

[0016] Figure 2 for Figure 1 A magnified view of a portion of position A in the middle;

[0017] Figure 3 for Figure 1 Schematic diagram of the structure of the composite wear-resistant layer;

[0018] Figure 4 for Figure 1 A schematic diagram of the overall cross-sectional structure of the middle section;

[0019] Figure 5 for Figure 4 A magnified view of the area at position B in the middle.

[0020] Reference numerals in the attached drawings: 1. Elbow body; 11. Elbow substrate; 12. Composite wear-resistant layer; 121. High-hardness ceramic layer; 122. Metal-ceramic layer; 123. Polymer wear-resistant layer; 13. Bionic honeycomb buffer layer; 14. Anti-rust coating; 2. Flange 1; 3. Flange 2; 4. Fixing cylinder; 5. Lead screw; 6. Rotating block; 7. Nut; 8. Easy-release plate; 81. Threaded cylinder; 9. Spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please refer to the following: Figures 1-5 ,in Figure 1 This is a schematic diagram of the front view structure in one embodiment of the present invention; Figure 2 for Figure 1 A magnified view of a portion of position A in the middle; Figure 3 for Figure 1 Schematic diagram of the structure of the composite wear-resistant layer; Figure 4 for Figure 1 A schematic diagram of the overall cross-sectional structure of the middle section; Figure 5 for Figure 4 A partial enlarged view at position B shows an elbow with high wear resistance, comprising: an elbow body 1, a flange 2 at the bottom of the elbow body 1, and a flange 3 at the top of the elbow body 1. The elbow body 1 includes an elbow substrate 11, a composite wear-resistant layer 12, a biomimetic honeycomb buffer layer 13, and a rust-proof coating 14. The composite wear-resistant layer 12 is located inside the elbow substrate 11, and the biomimetic honeycomb buffer layer 13 is located between the elbow substrate 11 and the composite wear-resistant layer 12. The biomimetic honeycomb buffer layer 13 is fixedly connected to the elbow substrate 11 and the composite wear-resistant layer 12. The rust-proof coating 14 is located on the outer surface of the elbow substrate 11. The biomimetic honeycomb buffer layer 13 is made of aluminum alloy using 3D printing technology, and its structure imitates the hexagonal honeycomb shape of a honeycomb. The flanges 2 and 3 facilitate the installation and disassembly of the elbow body 1, thereby facilitating maintenance.

[0023] The composite wear-resistant layer 12 includes a high-hardness ceramic layer 121, a metal-ceramic layer 122, and a polymer wear-resistant layer 123. The high-hardness ceramic layer 121 is the innermost layer, the metal-ceramic layer 122 is the middle layer, and the polymer wear-resistant layer 123 is the outermost layer.

[0024] The high-hardness ceramic layer 121 is made of nano-alumina ceramic material. Nano-alumina ceramic has extremely high hardness, with a Mohs hardness of up to 9, and good chemical stability. It can effectively resist the direct erosion and friction of materials and exhibits excellent wear resistance when facing high-hardness particulate materials.

[0025] The metal-ceramic layer 122 is prepared by mixing nickel-based alloy powder and tungsten carbide particles in a certain proportion using a laser cladding process. The metal-ceramic layer 122 combines the toughness of metal and the wear resistance of ceramic. It can not only absorb the energy brought by the impact of materials, but also prevent the propagation of cracks to a certain extent, thereby enhancing the overall impact resistance of the wear-resistant layer.

[0026] The high-molecular wear-resistant layer 123 is made of ultra-high molecular weight polyethylene. Ultra-high molecular weight polyethylene has an extremely low coefficient of friction and good self-lubricating properties, which can reduce the friction between the material and the elbow surface and reduce the wear of the material on the wear-resistant layer. At the same time, its excellent corrosion resistance can effectively resist the erosion of the elbow by corrosive media.

[0027] A fixed cylinder 4 is fixedly connected to the outer surface of the elbow body 1, and a lead screw 5 is rotatably connected inside the fixed cylinder 4.

[0028] A rotating block 6 is fixedly connected to the upper end of the lead screw 5, and a nut 7 is threadedly connected to the side of the lead screw 5. The lead screw 5 can be positioned by the nut 7 to prevent the lead screw 5 from moving at will.

[0029] The inner surface of the elbow body 1 is slidably connected to a disassembly piece 8, which has the same structure as the composite wear-resistant layer 12. The inner surface of the composite wear-resistant layer 12 has a notch that is the same as that of the disassembly piece 8. The outer surface of the disassembly piece 8 is fixedly connected to a threaded cylinder 81, which is threadedly connected to a lead screw 5. The inner surface of the bionic honeycomb buffer layer 13 is fixedly connected to a spring 9, which is fixedly connected to the bionic honeycomb buffer layer 13. The bionic honeycomb buffer layer 13 abuts against the outer surface of the disassembly piece 8. The inner surface of the bionic honeycomb buffer layer 13 has a hole 1, in which the spring 9 is fixedly connected. The inner surface of the bionic honeycomb buffer layer 13 has a hole 2, in which the threaded cylinder 81 is slidably connected.

[0030] In summary, the elbow with high wear resistance provided by this utility model maintains good wear resistance under various complex working conditions through the high-hardness ceramic layer 121, the metal-ceramic layer 122, and the polymer wear-resistant layer 123. Compared with traditional elbows, the wear life of the elbow of this utility model can be increased by 3 to 5 times under the same working conditions. The biomimetic honeycomb buffer layer 13 can effectively absorb the impact energy of materials, reduce the impact force on the elbow, reduce the damage to the wear-resistant layer and the deformation of the substrate caused by impact, and improve the reliability of the elbow under high impact conditions.

[0031] Rotating the rotating block 6 allows the lead screw 5 to rotate, separating it from the threaded cylinder 81. The spring force of the spring 9 then pushes out the easy-release piece 8, allowing it to be removed from the elbow body 1 for replacement. The new easy-release piece 8 is placed at the notch of the composite wear-resistant layer 12, and then fixed at the notch by connecting the lead screw 5 to the threaded cylinder 81. After tightening the lead screw 5 and the threaded cylinder 81, the nut 7 is rotated to make it fit tightly against the fixing cylinder 4, firmly fixing the easy-release piece 8 at the notch of the composite wear-resistant layer 12. The easy-release piece 8 experiences greater impact wear at its location; replacing it improves the service life of the elbow body 1.

Claims

1. A bend having a high wear resistance on the surface, characterized by include: Elbow body (1), the elbow body (1) is provided with flange one (2) at the bottom end and flange two (3) at the upper end. The elbow body (1) includes elbow substrate (11), composite wear-resistant layer (12), biomimetic honeycomb buffer layer (13) and anti-rust coating (14). The composite wear-resistant layer (12) is located inside the elbow substrate (11). The biomimetic honeycomb buffer layer (13) is located between the elbow substrate (11) and the composite wear-resistant layer (12). The biomimetic honeycomb buffer layer (13) is fixedly connected to the elbow substrate (11) and the composite wear-resistant layer (12). The anti-rust coating (14) is located on the outer surface of the elbow substrate (11). The biomimetic honeycomb buffer layer (13) is made of aluminum alloy material by 3D printing technology. Its structure imitates the hexagonal honeycomb hole shape of a honeycomb.

2. A bend having a high wear resistant surface according to claim 1, characterised in that, The composite wear-resistant layer (12) includes a high-hardness ceramic layer (121), a metal-ceramic layer (122), and a polymer wear-resistant layer (123). The high-hardness ceramic layer (121) is the innermost layer, the metal-ceramic layer (122) is the middle layer, and the polymer wear-resistant layer (123) is the outermost layer.

3. A bend having a high wear resistant surface according to claim 2, characterised in that, The high-hardness ceramic layer (121) is made of nano-alumina ceramic material.

4. A bend having a high wear resistant surface according to claim 3, characterised in that, The metal-ceramic layer (122) is prepared by mixing nickel-based alloy powder and tungsten carbide particles in a certain proportion using a laser cladding process.

5. A bend having a high wear resistant surface according to claim 4, characterised in that, The polymer wear-resistant layer (123) is made of ultra-high molecular weight polyethylene.

6. The elbow with high wear resistance on its surface according to claim 5, characterized in that, The outer surface of the elbow body (1) is fixedly connected to a fixed cylinder (4), and a lead screw (5) is rotatably connected inside the fixed cylinder (4).

7. The elbow with high wear resistance on its surface according to claim 6, characterized in that, The upper end of the lead screw (5) is fixedly connected to a rotating block (6), and the circumferential side of the lead screw (5) is threaded with a nut (7).

8. The elbow with high wear resistance on its surface according to claim 7, characterized in that, The inner surface of the elbow body (1) is slidably connected to a disassembly piece (8), and the outer surface of the disassembly piece (8) is fixedly connected to a threaded cylinder (81). The threaded cylinder (81) is threadedly connected to a lead screw (5). The inside of the bionic honeycomb buffer layer (13) is fixedly connected to a spring (9), and the spring (9) is fixedly connected to the bionic honeycomb buffer layer (13). The bionic honeycomb buffer layer (13) abuts against the outer surface of the disassembly piece (8).

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