A heating roller

Abstract

The application discloses a heating roller and belongs to the technical field of rollers. The heating roller comprises a liquid distribution assembly, one end of the liquid distribution assembly is rotationally connected with a rotary joint, and the other end of the liquid distribution assembly, which is away from the rotary joint, is connected with the heating roller. A plurality of U-shaped loops are arranged on the heating roller. Each U-shaped loop is provided with a liquid inlet and a liquid outlet. Heat exchange is performed during the process that the heating medium flows into the liquid inlet and flows out of the liquid outlet. The U-shaped loop forms a high-temperature section and a low-temperature section. The liquid inlet and the liquid outlet are in communication with the liquid distribution assembly. The liquid inlet and the liquid outlet are located on one side of the U-shaped loop close to the liquid distribution assembly. The high-temperature section and the low-temperature section are staggered on the surface of the heating roller, so that the surface temperature of the heating roller is uniform. The high-temperature section and the low-temperature section of the U-shaped loop groove are staggered on the shaft core, so that the surface temperature of the whole heating roller is uniform, and the problem that the temperature difference of the roller surface affects the product quality is solved.

Description

Technical Field

[0001] This invention belongs to the field of roller technology, and particularly relates to a heating roller. Background Technology

[0002] Roller heating equipment is a commonly used industrial heating device. Heating rollers can heat materials, improve their properties, and prevent them from sticking or solidifying. The basic principle is that the heating rollers heat the material passing through them. Common types of heating rollers include electric heating rollers, gas heating rollers, and liquid heating rollers. In the printing and papermaking industries, gas heating rollers can produce condensation, leading to unstable temperature control. This not only affects the uniformity of the roller surface temperature but can also cause roller deformation due to the temperature difference between the condensation and the roller surface. Liquid heating rollers include water-circulating heating rollers and oil-circulating heating rollers. When selecting a heating method, it is essential to understand the basic process conditions for using the heating roller, such as the products being produced and their main physical and chemical properties; commonly used roller surface temperatures and temperature accuracy; and so on. Regarding roller surface temperature, if the required temperature is very low (≤100℃), any heating method can be chosen. If the temperature is between 100~160℃, water heating rollers cannot be chosen, but steam heating, thermal oil heating, electric heating, and electromagnetic induction heating can be used. If the roller surface temperature is greater than 160℃, steam heating is usually not selected. If the roller surface temperature exceeds 250℃, oil heating is rarely used due to the limitations of the heat transfer oil. In this case, liquid heating is abandoned, and electric or electromagnetic heating is selected instead.

[0003] When using liquids to meet high-temperature requirements within the heating range, oil is generally used as the heating medium. For safety reasons, the structure must have good sealing performance, and the safety factor requirements for the liquid inlet and outlet of the heating roller are even higher.

[0004] In existing technologies, the oil-heated rollers are single-loop types with high inlet temperatures. As the liquid flows along the loop, the temperature gradually decreases, resulting in uneven roller surface temperatures. This makes the products highly susceptible to temperature variations, leading to a lower product qualification rate.

[0005] Therefore, it is urgent to design a heating roller to solve the problem of uneven roller surface temperature in single-loop liquid heating rollers mentioned above. Summary of the Invention

[0006] To address the technical problem of uneven roller surface temperature in single-loop liquid heating rollers mentioned in the background art, a heating roller is provided to solve the above-mentioned problem.

[0007] To achieve the above objectives, the specific technical solution of the heating roller of the present invention is as follows: A heating roller includes a liquid distribution assembly. One end of the liquid distribution assembly is rotatably connected to a rotary joint, and the end of the liquid distribution assembly away from the rotary joint is connected to the heating roller. The heating roller is provided with multiple sets of U-shaped loops. Each set of U-shaped loops is provided with an inlet and an outlet. The heating medium flows into the inlet and flows out of the outlet, and heat exchange occurs during the process, so that the U-shaped loops form a high-temperature section and a low-temperature section. The inlet and outlet are both located on the side of the U-shaped loops closer to the liquid distribution assembly. The high-temperature section and the low-temperature section are arranged alternately on the surface of the heating roller to make the surface temperature of the heating roller uniform. The heating medium flows into the inlet through the rotary joint and the liquid separator in sequence, and flows out through the liquid separator and the rotary joint from the outlet.

[0008] Furthermore, multiple sets of U-shaped loop grooves are formed on the shaft core of the heating roller, with the inlet and outlet both located on the side of the U-shaped loop grooves near the liquid distribution assembly.

[0009] Furthermore, the liquid separating assembly is equipped with an inlet pipe and an outlet pipe. One end of the inlet pipe is connected to the inlet end of the rotary joint, and the end of the inlet pipe away from the rotary joint is connected to the inlet port. One end of the outlet pipe is connected to the outlet end of the rotary joint, and the end of the outlet pipe away from the rotary joint is connected to the outlet port. When the liquid separating assembly rotates with the heating roller, the inlet pipe and the outlet pipe are always connected to the rotary joint.

[0010] Furthermore, the liquid separation assembly includes a liquid separation tube and a liquid separation connector. The liquid separation tube is fixedly connected to the liquid separation connector. The liquid separation connector is provided with a first connecting port and a second connecting port. The liquid separation tube is provided with a first pipe and a second pipe. The first connecting port is sealed and connected to the liquid inlet. The end of the first connecting port away from the liquid inlet is connected to the first pipe. The end of the first pipe away from the first connecting port is connected to the liquid inlet end of the rotary joint, thereby forming the liquid inlet pipe on the liquid distribution assembly. The second connecting port is sealed and connected to the liquid outlet. The end of the second connecting port away from the liquid outlet is connected to the second pipe. The end of the second pipe away from the second connecting port is connected to the liquid outlet end of the rotary joint, thereby forming the liquid outlet pipeline on the liquid distribution assembly.

[0011] Furthermore, a flange is provided circumferentially on the outer wall of the separator, and the flange is connected to the flange of the heating roller.

[0012] Furthermore, a first-stage groove and a second-stage groove are sequentially formed on the shaft core of the heating roller, with the liquid outlet located on the periphery of the first-stage groove and the liquid inlet located on the periphery of the second-stage groove. The liquid separator is provided with a first protrusion, the shape of which matches the shape of the first-stage groove. The second connecting port is located on the periphery of the first protrusion and is matched and connected with the liquid outlet. The first connecting port is located on the bottom surface of the first protrusion away from the liquid separator. After the first protrusion and the first-stage groove are sealed and connected, the first protrusion and the second-stage groove together form a liquid separator chamber. The heating medium flows into the liquid inlet after being separated through the liquid separator chamber.

[0013] Furthermore, the liquid separation chamber is a circular cavity, and the liquid inlets are evenly distributed circumferentially on the side of the second-stage groove.

[0014] Furthermore, it also includes a transmission device, which is located on the same side of the heating roller where the liquid distribution assembly is installed, and the transmission device provides power for the heating roller and the liquid distribution assembly to rotate relative to the rotary joint.

[0015] Furthermore, it also includes a transmission device, which is located on the same side of the heating roller where the liquid distribution component is installed. The transmission device provides power for the heating roller and the liquid distribution component to rotate relative to the rotary joint. The liquid distribution component is equipped with a bearing, with the inner ring of the bearing fixedly connected to the liquid distribution component and the outer ring of the bearing fixedly connected to the structural plate of the roller heating equipment.

[0016] Furthermore, the inlet pipe is located inside the outlet pipe, the transmission device is located between the bearing and the rotary joint, and the liquid distribution assembly is provided with a heat insulation cavity, which is wrapped around the outside of the outlet pipe to isolate the transmission device and the bearing from the outlet pipe through the heat insulation cavity.

[0017] The heating roller of the present invention has the following advantages: the present invention arranges the high temperature section and the low temperature section of the U-shaped circuit alternately on the shaft core, and the liquid inlet and liquid outlet are located on the same side, which ensures that the surface temperature of the entire heating roller is uniform and solves the problem of the roller surface temperature difference affecting product quality. Placing the transmission device and rotary joint on the same side improves safety performance. Because the transmission device operates at high speed and the rotary joint generates high temperature, placing them on the same side allows the other side to serve as a safe operating side, providing operators with more operating space. The rotary joint also gets very hot during continuous operation of the transmission device, so placing it on the same side makes operation safer. A heat insulation cavity is provided to prevent the bearings and transmission devices from overheating and affecting their lifespan. Multiple sets of U-shaped loop grooves are directly opened on the shaft core of the heating roller, which can improve the overall airtightness of the pipeline flow and further improve the safety performance of the heating roller. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the heating roller of the present invention.

[0019] Figure 2 This is a partial cross-sectional view of the heating roller of the present invention.

[0020] Figure 3 This is a schematic diagram of the shaft core structure of the present invention.

[0021] Figure 4 This is an enlarged structural diagram of part A of the present invention.

[0022] The markings in the diagram are as follows: 1. Liquid separating assembly; 101. Inlet pipe; 102. Outlet pipe; 1011. Liquid separating chamber; 100. Liquid separating pipe; 1001. First pipe; 1002. Second pipe; 200. Liquid separating connector; 2001. First connecting port; 2002. Second connecting port; 2003. First boss; 2. Rotary joint; 201. Inlet end; 202. Outlet end; 3. Heating roller; 301. Shaft core; 3011. First-stage groove; 3012. Second-stage groove; 4. U-shaped loop groove; 401. High-temperature section; 402. Low-temperature section; 403. Inlet; 404. Outlet; 5. Bearing; 6. Transmission device; 7. Flange; 8. Insulation chamber; 9. Structural plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0025] The following is a reference to the appendix. Figure 1 To be continued Figure 4 The heating roller of the present invention is described.

[0026] The existing liquid heating roller 3 is a single-loop type. The temperature of the liquid inlet 403 is high. As the liquid flows along the loop, the temperature gradually decreases, resulting in uneven roller surface temperature. The product is greatly affected by temperature, leading to a decrease in product qualification rate.

[0027] Therefore, the present invention provides a heating roller 3, such as Figures 1-4As shown, the device includes a liquid separating assembly 1, one end of which is rotatably connected to a rotary joint 2, and the end of the liquid separating assembly 1 away from the rotary joint 2 is connected to a heating roller 3. The heating roller 3 is equipped with multiple U-shaped loops, each with an inlet 403 and an outlet 404. The heating medium flows from the inlet 403 to the outlet 404, undergoing heat exchange, thus forming a high-temperature section 401 and a low-temperature section 402 within the U-shaped loop. That is, as the heating medium flows, its temperature gradually increases within the U-shaped loop. The temperature is reduced, thus creating a high-temperature section 401 and a low-temperature section 402. The principle is that heat exchange transfers the heat of the heating medium to the roller. The inlet 403 and the outlet 404 are both located on the side of the U-shaped loop closer to the liquid distribution assembly 1. The high-temperature section 401 and the low-temperature section 402 are arranged alternately on the surface of the heating roller 3 to make the surface temperature of the heating roller 3 uniform. The heating medium flows into the inlet 403 through the rotary joint 2 and the liquid distribution assembly 1 in sequence, and flows out through the outlet 404 through the liquid distribution assembly 1 and the rotary joint 2.

[0028] Preferably, the heating roller 3 has multiple sets of U-shaped loop grooves 4 on its shaft core 301. The inlet 403 and outlet 404 are both located on the side of the U-shaped loop groove 4 closest to the liquid distribution assembly 1. Specifically, one end of the liquid distribution assembly 1 is rotatably connected to the rotary joint 2, and the end of the liquid distribution assembly 1 away from the rotary joint 2 is fixedly connected to the shaft core 301 of the heating roller 3. Multiple sets of U-shaped loop grooves 4 are provided inside the shaft core 301, and each set of U-shaped loop grooves 4 has an inlet 403 and an outlet 404. The heating medium flows from the inlet 403 to the outlet 404 and undergoes heat exchange, forming a high-temperature section 401 and a low-temperature section 402 in the U-shaped loop trough 4. Both the inlet 403 and the outlet 404 are connected to the liquid distribution assembly 1 and are located on the same side near the liquid distribution assembly 1. The high-temperature section 401 and the low-temperature section 402 are staggered on the shaft core 301 to ensure uniform surface temperature of the heating roller 3 and to improve the sealing of the U-shaped loop, making it easier to process and form.

[0029] Specifically, the circulation direction of the heating medium is as follows: Figure 2As shown, the heating medium enters from the rotary joint 2 through the liquid distribution assembly 1 into multiple sets of U-shaped loop grooves 4 opened on the shaft core 301. Each set of U-shaped loop grooves 4 has a liquid inlet 403 and a liquid outlet 404, and the liquid inlet 403 and the liquid outlet 404 are located on the same side of the shaft core 301. The heating medium completes a small circulation in each set of U-shaped loop grooves 4. The entire shaft core 301 has multiple sets of circulation loops. In each set of loops, the liquid inlet 403 has a high temperature. As the heating medium flows along the U-shaped loop groove 4... As the heating medium moves, its temperature gradually decreases, reaching its lowest point at the outlet 404. However, all inlets 403 and outlets 404 in all circuits are located on the same side and are arranged adjacent to each other. This allows heat exchange to neutralize the high temperature at the inlet 403 and the low temperature at the outlet 404. Furthermore, the high-temperature section 401 and the low-temperature section 402 are staggered on the shaft core 301, ensuring a uniform surface temperature across the entire heating roller 3. To enhance the heating effect of the heating roller 3, oil is used as the heating medium. However, it is understood that other liquids can be selected as the heating medium depending on the actual situation; no restrictions are placed here.

[0030] In another specific embodiment, multiple sets of U-shaped pipe loops can be arranged between the outer wall of the heating roller 3 and the shaft core 301 of the heating roller 3. The liquid inlet 403 and the liquid outlet 404 of the U-shaped pipe loop are both connected to the liquid distribution component 1, and the positions of the liquid inlet and the liquid outlet 404 are both located on the side of the U-shaped pipe loop closer to the liquid distribution component 1.

[0031] Preferably, the liquid separating assembly 1 is provided with an inlet pipe 101 and an outlet pipe 102. One end of the inlet pipe 101 is connected to the inlet end 201 of the rotary joint 2, and the end of the inlet pipe 101 away from the rotary joint 2 is connected to the inlet port 403. One end of the outlet pipe 102 is connected to the outlet end 202 of the rotary joint 2, and the end of the outlet pipe 102 away from the rotary joint 2 is connected to the outlet port 404. When the liquid separating assembly 1 rotates with the heating roller 3, the inlet pipe 101 and the outlet pipe 102 are always connected to the rotary joint 2. Specifically, the heating medium flows in from the inlet end 201 of the rotary joint 2, flows through the inlet pipe 101 into the inlet port 403 of the U-shaped circuit, and is guided by the U-shaped circuit to flow to the outlet port 404. The heating medium flows through the outlet port 404 into the outlet pipe 102, and finally flows out from the outlet end 202 of the rotary joint 2, completing the overall liquid circuit circulation.

[0032] As a preferred option, such as Figure 2As shown, the liquid dispensing assembly 1 includes a dispensing tube 100 and a dispensing connector 200. The dispensing tube 100 is fixedly connected to the dispensing connector 200. The dispensing connector 200 is provided with a first connecting port 2001 and a second connecting port 2002. The dispensing tube 100 is provided with a first pipe 1001 and a second pipe 1002. The first connecting port 2001 is sealed and connected to the liquid inlet 403. The end of the first connecting port 2001 away from the liquid inlet 403 is connected to the first pipe 1001. One end of the liquid inlet 1001, away from the first connecting port 2001, is connected to the liquid inlet end 201 of the rotary joint 2, thus forming the liquid inlet pipe 101 on the liquid distribution assembly 1; the second connecting port 2002 is sealed and connected to the liquid outlet 404, the end of the second connecting port 2002 away from the liquid outlet 404 is connected to the second pipe 1002, and the end of the second pipe 1002 away from the second connecting port 2002 is connected to the liquid outlet end 202 of the rotary joint 2, thus forming the liquid outlet pipe 102 on the liquid distribution assembly 1. Specifically, the heating medium flows sequentially through the first pipe 1001 and the first connecting port 2001 of the liquid inlet pipe 101 and then enters the U-shaped loop trough 4. After flowing out of the U-shaped loop trough 4, the heating medium flows sequentially through the second connecting port 2002 and the second pipe 1002 of the liquid outlet pipe 102 and then flows out from the liquid outlet end 202 of the rotary joint 2.

[0033] Preferably, a flange 7 is provided circumferentially on the outer wall of the liquid separator 100, and the flange 7 is connected to the flange of the heating roller 3, thereby ensuring the sealing of the heating medium and the convenience of maintenance.

[0034] As a preferred option, such as Figure 4As shown, a first-stage groove 3011 and a second-stage groove 3012 are sequentially formed on the shaft core 301 of the heating roller 3. The liquid outlet 404 is located on the periphery of the first-stage groove 3011, and the liquid inlet 403 is located on the periphery of the second-stage groove 3012. The liquid separator 200 is provided with a first boss 2003, the shape of which matches the shape of the first-stage groove 3011. The second connecting port 2002 is located on the periphery of the first boss 2003 and is matched and connected with the liquid outlet 404. The first connecting port 2001 is located on the bottom surface of the first boss 2003 away from the liquid separator 100. After the first boss 2003 is sealed and connected to the first-stage groove 3011, the first boss 2003 and the second-stage groove 3012 together form a liquid separator 1011. The heating medium flows into the liquid inlet 403 after being separated through the liquid separator 1011. Specifically, the heating medium enters the U-shaped loop groove 4 through the liquid distribution chamber 1011, and the sealing connection between the first boss 2003 and the first-stage groove 3011 ensures the tightness of the flow of the heating medium in the pipeline and prevents the heating medium from leaking into the second-stage groove 3012 from the outlet 404, thereby preventing cross-flow of the heating medium. In addition, the shape of the first boss 2003 matches the shape of the first-stage groove 3011, thereby achieving guidance and fixation during installation, which makes it easy for personnel to connect the liquid distribution assembly 1 to the heating roller 3 through the flange 7.

[0035] Preferably, the liquid distribution chamber 1011 is a circular cavity, and the liquid inlets 403 are evenly distributed circumferentially on the side of the second-stage groove 3012. Specifically, the liquid distribution chamber 1011 is a circular cavity to reduce the resistance difference of the heating medium in the liquid distribution chamber 1011. At the same time, it can be understood that the shape of the liquid distribution chamber 1011 can also be set to other symmetrical or evenly distributed structures to ensure that the liquid flowing out of each liquid inlet 403 is relatively uniform. The liquid outlets 404 are evenly distributed on the side of the second-stage groove 3012, that is, evenly distributed on the side of the liquid distribution chamber 1011, thereby further ensuring that the heating medium can flow out evenly from each liquid inlet 403.

[0036] Preferably, the heating roller 3 also includes a transmission device 6, which is located on the same side of the heating roller 3 where the liquid distribution component 1 is installed. The transmission device 6 provides the power for the heating roller 3 and the liquid distribution component 1 to rotate relative to the rotary joint 2. Specifically, placing the transmission device 6 and the rotary joint 2 on the same side allows for more space on the operating side. However, the transmission device 6 operates at a very high speed during continuous operation, which could easily lead to safety accidents. Furthermore, the rotary joint 2 experiences high temperatures due to the inflow and outflow of the heating medium, increasing the risk of burns to personnel. Therefore, placing them on the same side increases the safety of personnel operation.

[0037] like Figure 2As shown, a bearing 5 is provided on the liquid distribution pipe 100. The inner ring of the bearing 5 is fixedly connected to the liquid distribution pipe 100, and the outer ring of the bearing 5 is fixedly connected to the structural plate 9 of the roller heating device. This allows the heating roller 3 to rotate relative to the roller heating device by means of the rotating rod of the heating roller 3 at the end away from the liquid distribution component 1.

[0038] Preferably, the inlet pipe 101 is located inside the outlet pipe 102, the transmission device 6 is located between the bearing 5 and the rotary joint 2, and the liquid distribution assembly 1 is provided with a heat insulation cavity 8, which surrounds the outlet pipe 102 to isolate the transmission device 6 and the bearing 5 from the outlet pipe 102. Figure 2 As shown, in a specific embodiment, it can be configured as follows: a bearing 5 is provided on the liquid distribution pipe 100, the inner ring of the bearing 5 is fixedly connected to the liquid distribution pipe 100, the outer ring of the bearing 5 is fixedly connected to the structural plate 9 of the roller heating equipment, and the transmission device 6 is located between the bearing 5 and the rotary joint 2; the liquid distribution pipe 100 includes, from the inside to the outside, an inner pipe, an outer pipe and a sleeve, the inner pipe as the specific structure of the first pipe 1001, forming the liquid inlet pipe 101 on the liquid distribution pipe 100; the outer pipe is sleeved on the inner pipe, and a gap is left between the outer pipe and the inner pipe as the specific structure of the second pipe 1002, forming the liquid outlet pipe 102 on the liquid distribution pipe 100; the sleeve is sleeved on the outer pipe, and a closed gap is left between the sleeve and the outer pipe, thereby forming a heat insulation cavity 8, and the bearing 5 and the transmission device 6 are fixedly connected to the outer wall of the outer pipe. Specifically, the inlet pipe 101 for conveying the high-temperature heating medium is wrapped by the outlet pipe 102 for the returning low-temperature heating medium, forming the first layer of thermal insulation protection between the bearing 5 and the transmission device 6 and the high-temperature inlet pipe 101. The outlet pipe 102 is then wrapped by the thermal insulation cavity 8, which forms a gas thermal insulation protection layer, becoming the second layer of thermal insulation protection between the bearing 5 and the transmission device 6 and the high-temperature inlet pipe 101. This further ensures that the temperature of the bearing 5 and the transmission device 6 will not be too high, avoiding overheating of the liquid distribution assembly 1, which would reduce the service life of the bearing 5 and the transmission device 6 installed on the liquid distribution assembly 1.

[0039] This invention ensures uniform surface temperature of the entire heating roller 3 by staggering the high-temperature section 401 and low-temperature section 402 of the U-shaped circuit on the shaft core 301, thus solving the problem of product quality affected by roller surface temperature difference. Furthermore, placing the transmission device 6 and the rotary joint 2 on the same side provides operators with more operating space. The transmission device 6 operates at a high speed during continuous operation, which can easily lead to safety accidents. Additionally, the rotary joint 2 also experiences high temperatures due to the entry and exit of the heating medium, which can easily cause burns to personnel. Therefore, placing them on the same side increases the safety of personnel operation.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A heating roller, characterized in that, It includes a liquid distribution assembly, one end of which is rotatably connected to a rotary joint, and the other end of which is connected to a heating roller. The heating roller is provided with multiple U-shaped loops, each U-shaped loop having an inlet and an outlet. The heating medium undergoes heat exchange as it flows from the inlet to the outlet, forming a high-temperature section and a low-temperature section in the U-shaped loop. The inlet and outlet are both located on the side of the U-shaped loop closer to the liquid distribution assembly. The high-temperature section and the low-temperature section are arranged alternately on the surface of the heating roller to ensure a uniform surface temperature of the heating roller. The heating medium flows into the inlet through the rotary joint and the liquid distribution assembly in sequence, and flows out through the liquid distribution assembly and the rotary joint from the outlet. The liquid separating assembly is equipped with an inlet pipe and an outlet pipe. One end of the inlet pipe is connected to the inlet end of the rotary joint, and the end of the inlet pipe away from the rotary joint is connected to the inlet. One end of the outlet pipe is connected to the outlet end of the rotary joint, and the end of the outlet pipe away from the rotary joint is connected to the outlet. When the liquid separating assembly rotates with the heating roller, the inlet pipe and the outlet pipe are always connected to the rotary joint. The liquid separation assembly includes a liquid separation tube and a liquid separation connector. The liquid separation tube is fixedly connected to the liquid separation connector. The liquid separation connector is provided with a first connection port and a second connection port. The liquid separation tube is provided with a first pipe and a second pipe. The first connecting port is sealed and connected to the liquid inlet. The end of the first connecting port away from the liquid inlet is connected to the first pipe. The end of the first pipe away from the first connecting port is connected to the liquid inlet end of the rotary joint, thereby forming the liquid inlet pipe on the liquid distribution assembly. The second connecting port is sealed and connected to the liquid outlet. The end of the second connecting port away from the liquid outlet is connected to the second pipe. The end of the second pipe away from the second connecting port is connected to the liquid outlet end of the rotary joint, thereby forming the liquid outlet pipeline on the liquid distribution assembly. The heating roller has a first-stage groove and a second-stage groove sequentially formed on its shaft core. The liquid outlet is located on the periphery of the first-stage groove, and the liquid inlet is located on the periphery of the second-stage groove. The liquid separator is provided with a first protrusion, the shape of which matches the shape of the first-stage groove. The second connecting port is located on the periphery of the first protrusion and is matched and connected with the liquid outlet. The first connecting port is located on the bottom surface of the first protrusion away from the liquid separator. After the first protrusion and the first-stage groove are sealed and connected, the first protrusion and the second-stage groove together form a liquid separator chamber. The heating medium flows into the liquid inlet after being separated through the liquid separator chamber.

2. The heating roller according to claim 1, characterized in that, Multiple U-shaped loop grooves are formed on the shaft core of the heating roller, and the liquid inlet and outlet are both formed on the side of the U-shaped loop grooves near the liquid distribution component.

3. The heating roller according to claim 1, characterized in that, A flange is provided around the outer wall of the separator, and the flange is connected to the flange of the heating roller.

4. The heating roller according to claim 1, characterized in that, The liquid separation chamber is a circular cavity, and the liquid inlets are evenly distributed around the side of the second-stage groove.

5. The heating roller according to claim 1, characterized in that, It also includes a transmission device, which is located on the same side of the heating roller where the liquid distribution assembly is installed. The transmission device provides power for the heating roller and the liquid distribution assembly to rotate relative to the rotary joint.

6. The heating roller according to claim 1, characterized in that, It also includes a transmission device, which is located on the same side of the heating roller where the liquid separation component is installed. The transmission device provides power for the heating roller and the liquid separation component to rotate relative to the rotary joint. The liquid separation component is equipped with a bearing, with the inner ring of the bearing fixedly connected to the liquid separation component and the outer ring of the bearing fixedly connected to the structural plate of the roller heating equipment.

7. The heating roller according to claim 6, characterized in that, The inlet pipe is located inside the outlet pipe, the transmission device is located between the bearing and the rotary joint, and the liquid separation assembly is equipped with a heat insulation cavity, which is wrapped around the outside of the outlet pipe to isolate the transmission device and bearing from the outlet pipe through the heat insulation cavity.

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