Large roll diameter heating roll structure

Abstract

The utility model discloses a kind of big roll diameter heating roller structure, comprising: roller shell, roller shell is cylindrical;Roller shaft, coaxially installed in roller shell, axial flow passage is formed in the roller shaft along the axial direction of roller shaft, axial flow passage has opposite one input end and one output end;Electric heating element, coated in the outside of roller shaft, the position of electric heating element corresponds to the position of axial flow passage;Two spiral tubes, spiral tube is set along the axial direction of roller shell and is spiral, two spiral tubes are mutually nested and are double helix, spiral tube has opposite one liquid inlet end and one liquid outlet end, the flow direction of fluid medium in two spiral tubes is opposite, the liquid inlet end of two spiral tubes is connected to the output end of axial flow passage, the liquid outlet end of two spiral tubes is connected to the input end of axial flow passage;Driving assembly, installed in axial flow passage.The utility model solves the problem that existing heating roller is difficult to ensure temperature consistency.

Description

Technical Field

[0001] This utility model relates to the field of heating roller technology, specifically to a large-diameter heating roller structure. Background Technology

[0002] Currently, the most common methods for heating rollers or shafts include electric heating and oil heating. Although electric heating is fast, it suffers from poor heating uniformity and large temperature differences on the roller surface, making it difficult to ensure temperature consistency, especially in large-diameter applications. While oil heating provides a relatively uniform temperature distribution, it has high requirements for oil pressure and temperature, relies on an external oil temperature controller, and has drawbacks such as large equipment footprint, significant heat loss, high risk of oil leakage, and high maintenance costs. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a large-diameter heating roller structure is provided to solve the problem that existing heating rollers cannot guarantee temperature consistency.

[0004] To achieve the above objectives, a large-diameter heating roller structure is provided, comprising:

[0005] Roller housing, the roller housing being cylindrical;

[0006] A roller shaft is coaxially mounted in the roller housing. An axial flow channel is formed inside the roller shaft along the axial direction of the roller shaft. The axial flow channel has an input end and an output end opposite to each other.

[0007] An electric heating element is wrapped around the outside of the roller shaft, and the position of the electric heating element corresponds to the position of the axial flow channel;

[0008] Two spiral tubes for containing fluid medium are arranged along the axial direction of the roller shell and are spiral in shape. The two spiral tubes are nested together to form a double spiral. Each spiral tube has an inlet end and an outlet end opposite to each other. The fluid medium in the two spiral tubes flows in opposite directions. The inlet ends of the two spiral tubes are connected to the outlet end of the axial flow channel, and the outlet ends of the two spiral tubes are connected to the inlet end of the axial flow channel.

[0009] A drive assembly for discharging the fluid medium from the input end to the output end is installed in the axial flow channel.

[0010] Furthermore, the fluid medium is water or oil.

[0011] Furthermore, the axial flow channel is coaxially arranged with the roller shaft.

[0012] Furthermore, the driving component includes:

[0013] A rotating shaft is rotatably mounted inside the axial flow channel, and the rotating shaft is arranged in the same direction as the axial flow channel;

[0014] The blade is installed at one end of the rotating shaft, and the other end of the rotating shaft extends to the outside of the end face of the roller shaft;

[0015] A motor is mounted on the roller shaft, and the motor is driven to the other end of the rotating shaft.

[0016] Furthermore, the rotating shaft is coaxially arranged with the axial flow channel.

[0017] The beneficial effects of this invention are as follows: the large-diameter heated roller structure heats the fluid medium within the axial flow channel using an electric heating element. The heated fluid medium, pushed by the drive assembly, is fed into the input ends of two spiral tubes arranged in a double-helix configuration, and then discharged into the axial flow channel through the output ends of the two spiral tubes, forming a circulating heating process. Because the two spiral tubes of the double-helix structure transfer heat to the roller shell, the heat distribution within the roller shell is uniform, thus improving heating uniformity. Furthermore, it avoids the problems of large footprint and significant heat loss associated with oil temperature controllers or boilers, reducing the temperature difference on the roller surface and ensuring processing quality. Attached Figure Description

[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the large-diameter heating roller in an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the roller shaft in an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the axial flow channel in an embodiment of the present invention.

[0022] Figure label:

[0023] Roller housing 1;

[0024] Roller shaft 2, axial flow channel 20, input end a, output end b;

[0025] Electric heating element 3;

[0026] 4. Spiral tube, inlet end c, outlet end d;

[0027] Drive component 5, rotating shaft 51, blade 52. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Reference Figures 1 to 3 As shown, this utility model provides a large-diameter heating roller structure, including: roller shell 1, roller shaft 2, electric heating element 3 and spiral tube 4.

[0031] The roller housing 1 is made of a thermally conductive material, such as a metal sheet with good thermal conductivity. The roller housing 1 is cylindrical.

[0032] The roller shaft 2 is coaxially mounted in the roller housing 1. An axial flow channel 20 is formed inside the roller shaft 2, which is arranged along the axial direction of the roller shaft 2. The axial flow channel 20 has an input end a and an output end b opposite to each other.

[0033] The electric heating element 3 covers the outside of the roller shaft 2. The position of the electric heating element 3 corresponds to the position of the axial flow channel 20. The electric heating element is a component that converts electrical energy into heat energy, and it can be selected according to actual needs. Correspondingly, the roller shaft is also made of a thermally conductive material.

[0034] There are two spiral tubes 4. Spiral tubes 4 are used to contain the fluid medium.

[0035] As a preferred embodiment, the fluid medium is water or oil.

[0036] The spiral tube 4 is arranged along the axial direction of the roller shell 1. The spiral tube 4 is spiral in shape. Two spiral tubes 4 are nested together to form a double spiral.

[0037] The spiral tube 4 has an inlet end c and an outlet end d facing each other. The fluid media in the two spiral tubes 4 flow in opposite directions.

[0038] The inlet end c of the two spiral tubes is connected to the outlet end b of the axial flow channel 20. The outlet end d of the two spiral tubes 4 is connected to the inlet end a of the axial flow channel 20.

[0039] In this embodiment, the inlet end c of the spiral tube is connected to the output end b of the axial flow channel 20 via a pipeline; the outlet end d of the spiral tube 4 is connected to the input end a of the axial flow channel 20 via a pipeline.

[0040] The spiral tube is attached to the inner wall of the roller shell, transferring heat to the roller shell.

[0041] The drive assembly 5 is installed in the axial flow channel 20. The drive assembly 5 is used to discharge the fluid medium from the input end a to the output end b. (See reference...) Figure 3 As shown, the flow direction of the fluid medium in the axial flow channel is indicated by the hollow arrow line.

[0042] In a preferred embodiment, the axial flow channel 20 is coaxially arranged with the roller shaft 2.

[0043] In this embodiment, the drive component 5 includes: a rotating shaft 51, a blade 52, and a motor.

[0044] The rotating shaft 51 is rotatably mounted inside the axial flow channel 20. The rotating shaft 51 is arranged in the same direction as the axial flow channel 20.

[0045] The blade 52 is mounted on one end of the rotating shaft 51 to form a propeller structure. The other end of the rotating shaft 51 extends to the outside of the end face of the roller shaft 2.

[0046] The motor is mounted on the roller shaft 2. The motor drive is connected to the other end of the rotating shaft 51.

[0047] In this embodiment, the rotating shaft 51 is coaxially arranged with the axial flow channel 20.

[0048] The large-diameter heating roller structure of this utility model can be used in the fields of textiles, printing and other technologies, specifically in the hot-pressing pre-shrinking process of textiles.

[0049] This utility model's large-diameter heated roller structure heats the fluid medium within the axial flow channel using an electric heating element. The heated fluid medium, propelled by a drive assembly, is fed into the input ends of two spiral tubes arranged in a double-helix configuration, and then discharged into the axial flow channel through the output ends of these tubes, forming a circulating heating process. The double-helix structure transfers heat to the roller shell, resulting in a more uniform heat distribution and improved heating uniformity. Furthermore, it avoids the problems of large footprint and significant heat loss associated with oil temperature controllers or boilers, reducing temperature differences on the roller surface and ensuring processing quality.

[0050] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A large-diameter heating roller structure, characterized in that, include: Roller housing, the roller housing being cylindrical; A roller shaft is coaxially mounted in the roller housing. An axial flow channel is formed inside the roller shaft along the axial direction of the roller shaft. The axial flow channel has an input end and an output end opposite to each other. An electric heating element is wrapped around the outside of the roller shaft, and the position of the electric heating element corresponds to the position of the axial flow channel; Two spiral tubes for containing fluid medium are arranged along the axial direction of the roller shell and are spiral in shape. The two spiral tubes are nested together to form a double spiral. Each spiral tube has an inlet end and an outlet end opposite to each other. The fluid medium in the two spiral tubes flows in opposite directions. The inlet ends of the two spiral tubes are connected to the outlet end of the axial flow channel, and the outlet ends of the two spiral tubes are connected to the inlet end of the axial flow channel. A drive assembly for discharging the fluid medium from the input end to the output end is installed in the axial flow channel.

2. The large-diameter heating roller structure according to claim 1, characterized in that, The fluid medium is water or oil.

3. The large-diameter heating roller structure according to claim 1, characterized in that, The axial flow channel is coaxially arranged with the roller shaft.

4. The large-diameter heating roller structure according to claim 3, characterized in that, The driving component includes: A rotating shaft is rotatably mounted inside the axial flow channel, and the rotating shaft is arranged in the same direction as the axial flow channel; The blade is installed at one end of the rotating shaft, and the other end of the rotating shaft extends to the outside of the end face of the roller shaft; A motor is mounted on the roller shaft, and the motor is driven to the other end of the rotating shaft.

5. The large-diameter heating roller structure according to claim 4, characterized in that, The rotating shaft is coaxially arranged with the axial flow channel.

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