A multi-level buffer heat-resistant composite roller

Abstract

This utility model provides a multi-level buffer heat-resistant composite roll, comprising: a shaft body, a cooling mechanism disposed inside the shaft body, a heat-resistant buffer mechanism disposed outside the shaft body, and a cooling channel opened inside the shaft body. The cooling mechanism includes a diversion box and a water outlet box. Compared with the prior art, this utility model has the following beneficial effects: by setting a spiral cooling channel and a rotary joint for water inlet, its spiral design increases the contact area and flow path between the cooling medium and the roll wall, ensuring uniform heat dissipation and reducing local thermal stress, thereby improving the thermal stability and service life of the composite roll. By setting a heat-resistant buffer mechanism, the elastic buffer layer and the heat-resistant layer effectively absorb and disperse the thermal stress and mechanical impact during the rolling process, extending the service life of the roll body under high temperature and high load conditions.

Description

Technical Field

[0001] This utility model belongs to the field of composite rollers, and specifically relates to a multi-level buffer heat-resistant composite roller. Background Technology

[0002] Composite rollers are roller components made of two or more materials through a specific process. They are typically composed of an outer layer of wear-resistant material and an inner layer of high-toughness matrix, and are widely used in metallurgy, papermaking, and plastics processing. Their core advantage lies in balancing surface hardness and overall strength through material combination. However, composite rollers without a cooling mechanism face significant problems in practical use. First, the lack of a cooling mechanism leads to heat accumulation during continuous operation, causing the roller temperature to rise sharply. Due to the differences in thermal conductivity and coefficient of thermal expansion of different materials in the composite roller, the outer and inner layers expand at different rates after heating, generating shear stress at the bonding interface. When the stress exceeds the bonding strength of the materials, delamination or micro-cracks will occur. This damage is irreversible, eventually leading to peeling of the roller surface or even complete breakage. Therefore, we aim to design a multi-layered, buffered, heat-resistant composite roller to solve this problem. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-level buffer heat-resistant composite roller to solve the problems mentioned in the background technology.

[0004] This utility model is achieved through the following technical solution: a multi-level buffer heat-resistant composite roller, comprising: a shaft body, wherein a cooling mechanism is provided inside the shaft body, a heat-resistant buffer mechanism is provided on the outside of the shaft body, and a cooling channel is provided inside the shaft body;

[0005] The cooling mechanism includes a distribution box and a water outlet box, which are respectively fixedly connected to the left and right ends of the shaft. A main water inlet pipe is fixedly connected inside the distribution box, and a flange is fixedly connected to the left end of the main water inlet pipe.

[0006] The cooling mechanism also includes a rotary joint, the output end of which is fixedly connected to a second flange. The first flange and the second flange are fixedly connected by a bolt assembly. By setting a spiral cooling channel in combination with the water inlet design of the rotary joint, the spiral design increases the contact area and flow path between the cooling medium and the roller wall, ensuring uniform heat dissipation and reducing local thermal stress, thereby improving the thermal stability and service life of the composite roller.

[0007] In a preferred embodiment, the cooling channel has a spiral structure to extend the contact time and path between the coolant and the shaft.

[0008] In a preferred embodiment, the bolt assembly includes a bolt that extends movably through the interior of flange one and flange two, a gasket is movably fitted onto the outer side of the bolt, and a nut is screwed onto the threaded end of the bolt.

[0009] In a preferred embodiment, an O-ring is fixedly connected to the left side surface of the flange to improve sealing.

[0010] In a preferred embodiment, the gasket is a spring washer used to generate a preload to counteract loosening of the nut.

[0011] In a preferred embodiment, the heat-resistant buffer mechanism includes an elastic buffer layer, a heat-resistant layer fixedly connected to the outside of the elastic buffer layer, and a functional layer fixedly connected to the outside of the heat-resistant layer. By setting up the heat-resistant buffer mechanism, the elastic buffer layer and the heat-resistant layer can effectively absorb and disperse the thermal stress and mechanical impact during the rolling process, thereby extending the service life of the roll body under high temperature and high load conditions.

[0012] As a preferred embodiment, the elastic buffer layer is a composite structure of heat-resistant silicone and stainless steel wire mesh.

[0013] In a preferred embodiment, the heat-resistant layer is a high-temperature resistant composite ceramic structure, and the functional layer is a wear-resistant metal ceramic.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are:

[0015] 1. By setting up a spiral cooling channel and a rotary joint for water inlet, the spiral design increases the contact area and flow path between the cooling medium and the roller wall, ensuring uniform heat dissipation and reducing local thermal stress, thereby improving the thermal stability and service life of the composite roller.

[0016] 2. By setting up a heat-resistant buffer mechanism, the elastic buffer layer and heat-resistant layer are used to effectively absorb and disperse the thermal stress and mechanical impact during the rolling process, thereby extending the service life of the roll body under high temperature and high load conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional view of the overall structure of a multi-level buffer heat-resistant composite roller according to this utility model.

[0019] Figure 2 This is a partial structural cross-sectional view of a multi-level buffer heat-resistant composite roller according to this utility model.

[0020] Figure 3 This utility model relates to a multi-level buffer heat-resistant composite roller. Figure 2 Enlarged view of part A of the structure.

[0021] Figure 4 This is a partial three-dimensional view of a multi-level buffer heat-resistant composite roller according to the present invention.

[0022] In the diagram, 1-shaft, 2-cooling mechanism, 3-heat-resistant buffer mechanism;

[0023] 21-Distribution box, 22-Main inlet pipe, 23-Flange 1, 24-Rotary joint, 25-Flange 2, 26-Bolt assembly, 261-Screw, 262-Gasket, 263-Nut, 27-Outlet box, 28-Cooling channel;

[0024] 31-Elastic buffer layer, 311-Stainless steel wire mesh, 32-Heat resistant layer, 321-Functional layer. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-3 As the first embodiment of this utility model:

[0027] A multi-level buffer heat-resistant composite roller includes: a shaft body 1, a cooling mechanism 2 is provided inside the shaft body 1, a heat-resistant buffer mechanism 3 is provided on the outside of the shaft body 1, and a cooling channel 28 is provided inside the shaft body 1.

[0028] The cooling mechanism 2 includes a distribution box 21 and a water outlet box 27. The distribution box 21 and the water outlet box 27 are respectively fixedly connected to the left and right ends of the shaft 1. The main water inlet pipe 22 is fixedly connected inside the distribution box 21, and the left end of the main water inlet pipe 22 is fixedly connected to a flange 23.

[0029] The cooling mechanism 2 also includes a rotary joint 24. The output end of the rotary joint 24 is fixedly connected to a second flange 25. The first flange 23 and the second flange 25 are fixedly connected by a bolt assembly 26. By setting a spiral cooling channel 28 and combining it with the water inlet design of the rotary joint 24, the spiral design increases the contact area and flow path between the cooling medium and the roller wall, ensuring uniform heat dissipation and reducing local thermal stress, thereby improving the thermal stability and service life of the composite roller.

[0030] Cooling channel 28 has a spiral structure to extend the contact time and path between the coolant and shaft 1.

[0031] The bolt assembly 26 includes a screw 261, which is movably inserted through the interior of flange 1 23 and flange 25. A gasket 262 is movably sleeved on the outside of the screw 261, and a nut 263 is screwed onto the threaded end of the screw 261.

[0032] An O-ring is fixedly connected to the left side surface of flange 23 to improve sealing.

[0033] Washer 262 is a spring washer used to generate a preload to counteract loosening of nut 263.

[0034] Specifically, during use, the coolant is delivered to the inside of the main water inlet pipe 22 through the rotary joint 24 via an external fluid delivery device. Then, it flows into the inside of the distribution box 21 from the main water inlet pipe 22, and then into the inside of the cooling channel 28 from the distribution box 21. The cooling channel 28 has a spiral structure to increase the contact area and flow path between the coolant and the roller wall. At the same time, the left and right ends of the shaft 1 have the same structure. After heat exchange, the coolant flows into the water outlet box 27 at the right end of the shaft 1, and then is discharged from the water outlet pipe at the right end.

[0035] Please see Figure 1 as well as Figure 4 As a second embodiment of this utility model:

[0036] The heat-resistant buffer mechanism 3 includes an elastic buffer layer 31, a heat-resistant layer 32 is fixedly connected to the outside of the elastic buffer layer 31, and a functional layer 321 is fixedly connected to the outside of the heat-resistant layer 32. By setting the heat-resistant buffer mechanism 3, the elastic buffer layer 31 and the heat-resistant layer 32 can effectively absorb and disperse the thermal stress and mechanical impact during the rolling process, and extend the service life of the roll body under high temperature and high load conditions.

[0037] The elastic buffer layer 31 is a composite structure of heat-resistant silicone and stainless steel wire mesh 311.

[0038] The heat-resistant layer 32 is a high-temperature resistant composite ceramic structure, and the functional layer 321 is a wear-resistant metal ceramic.

[0039] Based on the above embodiments, the elastic buffer layer 31 absorbs impact energy and alleviates stress concentration, while also withstanding a certain high temperature. The composite ceramic heat-resistant layer 32 isolates heat conduction and protects the underlying structure due to its low thermal conductivity and high thermal stability. The metal-ceramic functional layer 321 combines the toughness of metal with the high temperature resistance of ceramic, bearing both mechanical loads and resisting thermal deformation, thereby extending the service life of the roller under high temperature and high load conditions.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage buffer heat-resistant composite roller, comprising: The shaft (1) is characterized in that a cooling mechanism (2) is provided inside the shaft (1), a heat-resistant buffer mechanism (3) is provided on the outside of the shaft (1), and a cooling channel (28) is provided inside the shaft (1). The cooling mechanism (2) includes a distribution box (21) and a water outlet box (27). The distribution box (21) and the water outlet box (27) are respectively fixedly connected to the left and right ends of the shaft (1). The main water inlet pipe (22) is fixedly connected inside the distribution box (21). The left end of the main water inlet pipe (22) is fixedly connected to a flange (23). The cooling mechanism (2) also includes a rotary joint (24), the output end of which is fixedly connected to a second flange (25), and the first flange (23) and the second flange (25) are fixedly connected by a bolt assembly (26).

2. The multi-level buffer heat-resistant composite roller as described in claim 1, characterized in that: The cooling channel (28) has a spiral structure to extend the contact time and path between the coolant and the shaft (1).

3. The multi-level buffer heat-resistant composite roller as described in claim 1, characterized in that: The bolt assembly (26) includes a screw (261) that moves through the interior of flange one (23) and flange two (25), a gasket (262) is movably sleeved on the outside of the screw (261), and a nut (263) is screwed onto the threaded end of the screw (261).

4. The multi-level buffer heat-resistant composite roller as described in claim 3, characterized in that: An O-ring is fixedly connected to the left side surface of the flange (23) to improve sealing.

5. The multi-level buffer heat-resistant composite roller as described in claim 3, characterized in that: The gasket (262) is a spring washer used to generate a preload to counteract the loosening of the nut (263).

6. The multi-level buffer heat-resistant composite roller as described in claim 1, characterized in that: The heat-resistant buffer mechanism (3) includes an elastic buffer layer (31), a heat-resistant layer (32) is fixedly connected to the outside of the elastic buffer layer (31), and a functional layer (321) is fixedly connected to the outside of the heat-resistant layer (32).

7. The multi-level buffer heat-resistant composite roller as described in claim 6, characterized in that: The elastic buffer layer (31) is a composite structure of heat-resistant silicone and stainless steel wire mesh (311).

8. The multi-level buffer heat-resistant composite roller as described in claim 6, characterized in that: The heat-resistant layer (32) is a high-temperature resistant composite ceramic structure, and the functional layer (321) is a wear-resistant metal ceramic.

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