Permanent magnet machine roller rubber coating repairing structure and using method

Abstract

The invention discloses a permanent magnet machine roller rubber coating repairing structure and a using method, and relates to the technical field of permanent magnet machines, the permanent magnet machine roller rubber coating repairing structure comprises a roller body, a rubber coating layer coating the surface of the roller body, roller end covers fixed at the two ends of the roller body, a repairing notch, a first bonding layer, a second bonding layer and a repairing layer, the repaired channel opening is a groove formed after the damaged area of the rubber coating layer is cleaned to the surface of the roller body; the first bonding layer is bonded and fixed on the surface of the roller body in the repairing gap; the second bonding layer is bonded and fixed to the portion, making contact with the rubber coating layer, of the periphery of the repairing notch. The surface of the side, away from the second bonding layer, of the repairing layer is flush with the outer surface of the surrounding rubber coating layer, the structure is simple, use is convenient, quick repairing and rubber coating are achieved, the use performance of equipment is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet machines, and particularly to a repair structure and a usage method for the rubber coating of a permanent magnet machine roller. Background Art

[0002] Permanent magnet machines play a crucial role in many industries such as mineral processing and coal washing. Their main function is to separate magnetic materials. As one of the core components of the permanent magnet machine, the surface of the magnetic separator roller is usually wrapped with a layer of rubber, aiming to protect the roller body and increase the friction with the materials, thereby effectively improving the separation efficiency.

[0003] However, during actual use, due to the long-term direct contact between the magnetic separator roller and the materials, it is inevitably affected by various actions such as friction and impact, resulting in problems such as wear, tear, and even detachment of the rubber coating on the roller. The occurrence of these problems not only reduces the performance of the magnetic separator, but in severe cases, it may even be necessary to replace the entire roller, which will undoubtedly cause a long downtime and bring significant economic losses to the enterprise. Summary of the Invention

[0004] The purpose of the present invention is to provide a repair structure and a usage method for the rubber coating of a permanent magnet machine roller to solve the problems existing in the above-mentioned prior art. The structure is simple and convenient to use, enabling rapid repair of the rubber coating and improving the service performance and lifespan of the equipment.

[0005] To achieve the above purpose, the present invention provides the following solution:

[0006] The present invention provides a repair structure for the rubber coating of a permanent magnet machine roller, including a roller body, a rubber coating layer wrapped on the surface of the roller body, roller end covers fixed at both ends of the roller body, a repair notch, a first adhesive layer, a second adhesive layer, and a repair layer. The repair notch is a groove formed by cleaning the damaged area of the rubber coating layer to the surface of the roller body; the first adhesive layer is adhesively fixed on the surface of the roller body within the repair notch; the second adhesive layer is adhesively fixed on the rubber coating layer in contact with the outer periphery of the repair notch; the repair layer is adhesively fixed on the first adhesive layer and the outer surface of the side of the repair layer away from the second adhesive layer is flush with the outer surface of the surrounding rubber coating layer.

[0007] Preferably, the outer periphery of the repair notch is provided with a first circumferential slope surface, and the cross-sectional area at the bottom of the first circumferential slope surface is smaller than the cross-sectional area at the top thereof.

[0008] Preferably, the slope of the first circumferential slope surface is 30° - 45°.

[0009] Preferably, a second circumferential slope surface matching the first circumferential slope surface is provided on the outer periphery of the repair layer, so that the second circumferential slope surface is attached to the first circumferential slope surface.

[0010] Preferably, the material of the repair layer is the same as that of the rubber coating layer, and the material of the repair layer is rubber.

[0011] Preferably, the thickness of the repair layer is 5-6 mm.

[0012] Preferably, the outer surface of the repair layer is a smooth surface.

[0013] Preferably, both the first adhesive layer and the second adhesive layer are formed by coating adhesive.

[0014] Preferably, the roller barrel is made of 304 stainless steel with a thickness of 5 mm.

[0015] The present invention also provides a method for using the permanent magnet machine roller rubber coating repair structure as described in any one of the above, including the following steps:

[0016] S1: Clean the damaged area of the rubber coating layer, remove loose impurities, so that the surface of the repair notch is clean and dry;

[0017] S2: Coat a layer of adhesive on the surface of the roller barrel in the repair notch area to form a first adhesive layer;

[0018] S3: After drying the first adhesive layer at room temperature, coat a layer of adhesive on the rubber coating layer in contact with the outer periphery of the repair notch to form a first adhesive layer;

[0019] S4: Calculate the width and length of the repair layer in advance, and bond the repair layer to the first adhesive layer and the second adhesive layer;

[0020] S5: Use a hammer or a pressure roller to compact the repair layer so that it is flush with the surface of the surrounding rubber coating layer, and then let it stand for curing, and the curing time is 2-3 hours;

[0021] S6: Grinding and trimming: After the repair material is completely cured, use a grinding wheel or an angle grinder to grind and trim the repair layer so that its surface is smooth and flat, and the transition with the surrounding rubber coating layer is natural.

[0022] The present invention has achieved the following technical effects compared with the prior art:

[0023] The object of the present invention is to provide a repair structure and a usage method for the rubber coating of a permanent magnet machine roller. By setting a repair notch and cleaning the damaged area into a groove, a regular and stable foundation is provided for subsequent repair work. The first and second bonding layers bond and fix the roller barrel and the rubber coating layer respectively, ensuring that the repair layer can be firmly connected to the damaged part, making the repaired structure more reliable, and the repair layer is flush with the outer surface of the surrounding rubber coating layer, ensuring the flatness of the roller surface, which is beneficial to the normal operation of the roller and reduces the impact on material transportation, etc. By setting a roller repair layer, there is no need to replace the entire roller or the rubber coating layer when the rubber coating is partially damaged. Only simple repair operations are required, which greatly reduces the maintenance cost and improves the service life cost ratio of the equipment. According to the repair structure and operation process designed by the present invention, the damaged rubber coating of the roller can be quickly repaired, the maintenance downtime is shortened, the impact on production caused by equipment shutdown is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 FIG. is a schematic structural diagram of a repair structure for the rubber coating of a permanent magnet machine roller located on the permanent magnet machine roller;

[0026] Figure 2 For Figure 1 the enlarged view at A in

[0027] In the figure: 1, roller barrel; 2, rubber coating layer; 3, repair structure for the rubber coating of the permanent magnet machine roller; 32, first bonding layer; 33, second bonding layer; 34, repair layer; 4, roller end cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0029] The object of the present invention is to provide a repair structure and a usage method for the rubber coating of a permanent magnet machine roller to solve the problems existing in the above-mentioned prior art. The structure is simple and easy to use, enabling rapid repair of the rubber coating and improving the performance and service life of the equipment.

[0030] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Embodiment 1

[0032] This embodiment provides a repair structure 3 for the rubber coating of a permanent magnet machine roller, including a roller barrel body 1, a rubber coating layer 2 coated on the surface of the roller barrel body 1, roller end caps 4 fixed at both ends of the roller barrel body 1, a repair notch, a first adhesive layer 32, a second adhesive layer 33, and a repair layer 34. The repair notch is a groove formed by cleaning the damaged area of the rubber coating layer 2 to the surface of the roller barrel body 1; the first adhesive layer 32 is adhesively fixed to the surface of the roller barrel body 1 within the repair notch; the second adhesive layer 33 is adhesively fixed to the rubber coating layer 2 in contact with the outer periphery of the repair notch; the repair layer is adhesively fixed to the first adhesive layer 32, and the outer surface of the side of the repair layer 34 away from the second adhesive layer 33 is flush with the outer surface of the surrounding rubber coating layer 2. By setting the repair notch and cleaning the damaged area into a groove, a regular and stable foundation is provided for subsequent repair work. The first and second adhesive layers respectively bond and fix the roller barrel body 1 and the rubber coating layer 2, ensuring that the repair layer 34 can be firmly connected to the damaged part, making the repaired structure more reliable, and the outer surface of the repair layer 34 is flush with the outer surface of the surrounding rubber coating layer 2, ensuring the flatness of the roller surface, which is beneficial to the normal operation of the roller and reduces the impact on material transportation, etc.

[0033] In a preferred solution of this embodiment, the outer periphery of the repair notch is set as a first circumferential slope surface, and the cross-sectional area at the bottom of the first circumferential slope surface is smaller than the cross-sectional area at the top. The setting of the first circumferential slope surface increases the contact area between the repair notch and the repair layer 34, improves the bonding strength between the two, enables the repair layer 34 to better integrate with the overall structure after installation, enhances the stability of the repair area, and reduces the risk of the repair layer 34 falling off.

[0034] In a preferred solution of this embodiment, the slope of the first circumferential slope surface is 30° - 45°. The slope of 30° - 45° can not only ensure a large enough contact area between the repair notch and the repair layer 34 to achieve a good bonding effect, but also facilitate construction operations and the fitting installation of the repair layer 34, ensuring the smooth progress of the repair work and the overall performance after repair.

[0035] In a preferred solution of this embodiment, the outer periphery of the repair layer 34 is provided with a second circumferential slope surface that matches the first circumferential slope surface, so that the second circumferential slope surface is arranged in a fitting manner with the first circumferential slope surface. The fitting arrangement of the second circumferential slope surface and the first circumferential slope surface further enhances the adaptability and connection tightness between the repair layer 34 and the repair notch, improves the stability of the repair from the structure, enables the repair layer 34 to better disperse stress when stressed, and prevents loosening or damage at the repair area.

[0036] In a preferred solution of this embodiment, the material of the repair layer 34 is the same as that of the rubber coating layer 2. The material of the repair layer 34 is rubber material. The same material of the repair layer 34 and the rubber coating layer 2 ensures the consistency of their physical and chemical properties, such as elasticity and wear resistance. This makes the rubber coating of the repaired roller more uniform and stable in overall performance, and will not cause local performance weakness due to material differences, which is beneficial to improving the overall service life and working performance of the roller.

[0037] In a preferred solution of this embodiment, the thickness of the repair layer 34 is 5 - 6 mm. The thickness of 5 - 6 mm is similar to the thickness of the original rubber coating layer 2. While ensuring the repair effect, it can keep the surface of the repaired roller uniform in thickness, avoiding problems such as local stress concentration or abnormal material transportation caused by excessive thickness difference, ensuring the normal operation of the roller, and maintaining the separation efficiency of the magnetic separator.

[0038] In a preferred solution of this embodiment, the outer surface of the repair layer 34 is a smooth surface. The smooth outer surface reduces the frictional resistance between the repair layer 34 and the material, helps the material pass smoothly through the surface of the roller, and at the same time reduces the occurrence probability of problems such as material accumulation and uneven wear caused by surface unevenness, ensuring the stability of the working process of the magnetic separator and the uniformity of material handling.

[0039] In a preferred solution of this embodiment, both the first adhesive layer 32 and the second adhesive layer 33 are formed by applying adhesive. Using the adhesive to form the first and second adhesive layers can provide strong adhesion, ensuring the firm connection of the repair layer 34 with the roller body 1 and the surrounding rubber coating layer 2. The use of the adhesive also has good adaptability, can fill the fine irregularities in the repair gap, further improving the stability and tightness of the connection, preventing the intrusion of moisture, impurities, etc. from causing damage to the repair area. Preferably, the adhesive is a V7077 - R component A, B, C mixed adhesive.

[0040] In a preferred solution of this embodiment, the roller body 1 is made of 304 stainless steel with a thickness of 5 mm. The 304 stainless steel material has good corrosion resistance and mechanical strength, and can provide a strong and reliable support matrix for the rubber coating repair structure of the roller. The thickness of 5 mm ensures that the roller body 1 can withstand various external forces during long - term operation without deformation, maintaining the overall stability of the repair structure and ensuring the performance and life of the entire magnetic separator roller.

[0041] Embodiment Two

[0042] This embodiment also provides a method for using the permanent magnet machine roller rubber coating repair structure 3 as in Embodiment One, including the following steps:

[0043] Surface treatment: Clean the damaged area of the rubber coating layer 2, remove loose rubber, oil stains, dust and other impurities, and ensure that the surface of the repair area is clean and dry. Grind the joint of the original rubber coating layer 2 into a slope angle of 30-45°.

[0044] Coating of the first adhesive layer 32: Coat a layer of adhesive on the surface of the roller body where the notch is repaired. The adhesive is the roller repair adhesive V7077-R (components A, B, and C are pre-mixed in proportion). This primer has good adhesiveness and can enhance the bonding force between the repair layer 34 and the roller body. The primer is evenly coated to avoid missed coating or accumulation.

[0045] Coating of the second adhesive layer 33: After drying the first adhesive layer 32 by air drying at room temperature for 5 minutes, coat a layer of adhesive on the inner side of the rubber coating layer 2 of the first annular slope box. This adhesive has the same material as the first adhesive layer 32.

[0046] Selection of the repair layer 34: Calculate the width and length of the repair layer 34 in advance, and grind the edge of the pre-prepared repair layer 34 to form a second annular slope, with an angle corresponding to the first annular slope. This repair layer 34 is preferably made of rubber material, has a hardness and elasticity similar to that of the roller rubber coating, and can effectively resist wear and impact.

[0047] Compaction and curing: Use a hammer or a roller to compact the repair layer 34 so that it is flush with the surrounding roller rubber coating surface. Then, let it stand for curing, and the curing time is 30 minutes.

[0048] Grinding and trimming: After the repair material is completely cured, use a grinding wheel or an angle grinder to grind and trim the repair area so that its surface is smooth and flat, and the transition with the surrounding roller rubber coating surface is natural.

[0049] Beneficial effects

[0050] Quick repair: The use of a fast-curing adhesive greatly shortens the repair time and reduces the downtime loss.

[0051] Simple operation: No professional equipment and high-temperature vulcanization are required, and the operation is simple and easy, reducing the maintenance difficulty.

[0052] High bonding strength: Special and high-strength adhesives ensure a firm bond between the repair layer 34 and the roller body, avoiding falling off again.

[0053] Good wear resistance: The rubber material has excellent wear resistance and impact resistance, extending the service life of the repair layer 34.

[0054] In the present invention, specific examples are used to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation on the present invention.

Claims

1. A repair structure for the rubber coating of a permanent magnet machine roller, comprising a roller barrel body, a rubber coating layer coated on the surface of the roller barrel body, and roller end caps fixed at both ends of the roller barrel body, characterized in that: Including: A repair notch, which is a groove formed after cleaning the damaged area of the rubber-coated layer to the surface of the roller barrel; A first adhesive layer, which is adhesively fixed to the surface of the roller barrel within the repair notch; A second adhesive layer, which is adhesively fixed to the rubber-coated layer in contact with the outer periphery of the repair notch; And A repair layer, which is adhesively fixed to the first adhesive layer and the outer surface of the side of the repair layer away from the second adhesive layer is flush with the outer surface of the surrounding rubber-coated layer.

2. The rubber coating repair structure of the permanent magnet machine roller according to claim 1, characterized in that: The outer periphery of the repair notch is provided with a first circumferential slope surface, and the cross-sectional area at the bottom of the first circumferential slope surface is smaller than the cross-sectional area at the top thereof.

3. The permanent magnet machine roller rubber repair structure according to claim 2, wherein: The slope of the first circumferential slope surface is 30°-45°.

4. The rubber coating repair structure of the permanent magnet machine roller according to claim 3, characterized in that: The outer periphery of the repair layer is provided with a second circumferential slope surface matching the first circumferential slope surface, so that the second circumferential slope surface is fitted with the first circumferential slope surface.

5. The rubber coating repair structure of the permanent magnet machine roller according to claim 4, characterized in that: The material of the repair layer is the same as the material of the rubber-coated layer, and the material of the repair layer is a rubber material.

6. The rubber coating repair structure of the permanent magnet machine roller according to claim 5, characterized in that: The thickness of the repair layer is 5-6 mm.

7. The rubber coating repair structure of the permanent magnet machine roller according to claim 1, characterized in that: The outer surface of the repair layer is a smooth surface.

8. The rubber coating repair structure of the permanent magnet machine roller according to claim 1, wherein: Both the first adhesive layer and the second adhesive layer are formed by coating adhesive.

9. The rubber coating repair structure of the permanent magnet machine roller according to claim 1, wherein: The roller barrel is made of 304 stainless steel with a thickness of 5 mm.

10. A method for using the permanent magnet machine roller rubber covering repair structure according to any one of claims 1 to 9, characterized in that: Including the following steps: S1: Clean the damaged area of the rubber-coated layer and remove loose impurities to make the surface of the repair notch clean and dry; S2: Coat a layer of adhesive on the surface of the roller barrel in the repair notch area to form a first adhesive layer; S3: After drying the first adhesive layer in the air at room temperature, coat a layer of adhesive on the rubber-coated layer in contact with the outer periphery of the repair notch to form a first adhesive layer; S4: Calculate the width and length of the repair layer in advance and bond the repair layer to the first adhesive layer and the second adhesive layer; S5: Use a hammer or a pressure roller to compact the repair layer to make it flush with the surface of the surrounding rubber-coated layer, and then let it stand for curing, and the curing time is 2-3 hours; S6: Grinding and trimming: After the repair material is completely cured, use a grinding wheel or an angle grinder to grind and trim the repair layer to make its surface smooth and flat and the transition with the surrounding rubber-coated layer natural.

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