A cooling roller

Abstract

This utility model relates to a cooling roller, specifically a cooling roller comprising: a cooling roller composed of several heat-conducting rings and heat-insulating rings; the heat-conducting rings being of the same size and extending through both ends; a heat-insulating ring being fitted between adjacent heat-conducting rings; the heat-conducting rings and heat-insulating rings being alternately distributed and fixedly connected; a sealing cover plate being fixedly connected to the distal ends of each heat-conducting ring at both ends; and the interior of the heat-conducting rings and heat-insulating rings being sealed by the two sealing cover plates; and a dividing component being fitted inside the cooling roller. This utility model, through the arrangement of several heat-conducting rings and heat-insulating rings in the cooling roller, allows the cooling roller to be divided into several independent segments based on the angle of heat conduction. With the cooperation of the heat-insulating rings, several independent heat-conducting segments are achieved. Furthermore, with the cooperation of the internal dividing component, the required length of the heat-conducting segment can be adjusted on the cooling roller to adapt it to the width of the roll film material to be cooled.

Description

Technical Field

[0001] This utility model relates to the field of cooling roller technology, and specifically to a cooling roller. Background Technology

[0002] A cooling roller is a type of equipment widely used in many industrial fields. Cooling rollers use cooling water or other cooling media to circulate inside them, thereby cooling the materials passing over their surfaces.

[0003] Cooling rollers play an irreplaceable role in many fields such as calendered film, tape coating, steel smelting, plastics processing, power industry, chemical industry, and textile industry.

[0004] Existing cooling rollers are single, continuous roller structures. Cooling medium is continuously circulated inside the roller, while the film material to be cooled is transported along the outer surface of the roller, causing it to rotate. This allows the film material to exchange heat with the internal cooling medium through the roller's excellent thermal conductivity, achieving the cooling effect. However, in practice, it is found that the specifications of the film materials encountered during production vary greatly. Not only do the lengths of the film materials differ, but more importantly, their widths also vary. The axial length of the cooling roller used in practice is fixed, making it impossible to properly adapt to film materials of different widths. Consequently, the portion of the cooling roller extending beyond the film surface cannot effectively contact the low-temperature medium transported by the cooling roller, resulting in significant energy loss.

[0005] Therefore, it is necessary to develop a new type of cooling roller to address the shortcomings of existing technologies. Utility Model Content

[0006] This utility model addresses the technical problems existing in the prior art by providing a cooling roller.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A cooling roller includes: a cooling roller composed of a plurality of heat-conducting rings and heat-insulating rings, wherein the plurality of heat-conducting rings are of the same size and pass through both ends, and a heat-insulating ring is attached between two adjacent heat-conducting rings; the plurality of heat-conducting rings and heat-insulating rings are alternately distributed and fixedly connected; and a sealing cover is fixedly connected to the distal ends of two heat-conducting rings located at both ends; the interiors of the plurality of heat-conducting rings and heat-insulating rings are sealed by the two sealing cover plates. A dividing assembly is fitted inside the cooling roller. The two ends of the dividing assembly extend to the two ends of the cooling roller and are each connected to an adjustment knob. By rotating one of the two adjustment knobs, the two ends of the dividing assembly move closer or further apart along the interior of the cooling roller. The far ends of the two adjustment knobs are respectively movably connected to a feed pipe and a discharge pipe. The near ends of the feed pipe and the discharge pipe are connected to the two ends of the dividing assembly through their respective adjustment knobs.

[0008] The beneficial effects of this utility model are: by setting several heat-conducting rings and heat-insulating rings in the cooling roller, the cooling roller can be divided into several independent segments by the heat-conducting angle, and with the cooperation of the heat-insulating rings, several independent heat-conducting segments can be realized. Furthermore, with the cooperation of the internal dividing components, the required length of the heat-conducting segment can be adjusted on the cooling roller to match the width of the film material to be cooled, effectively improving thermal efficiency and reducing heat loss.

[0009] Furthermore, the dividing assembly consists of a heat-insulating telescopic tube, a first heat-insulating piston, a heat-insulating component, and a heat-insulating tube group. The first heat-insulating piston is located between the cooling roller and the heat-insulating tube group at one end near the feed pipe. The heat-insulating component is located between the cooling roller and the heat-insulating tube group at one end near the discharge pipe. A positioning ring is fixedly sleeved in the middle of the cooling roller. A heat flow ring is provided at both ends of the positioning ring. The two heat flow rings are symmetrical to each other and are fixedly sleeved inside the cooling roller. Due to the installation of the heat insulation tube assembly, the cooling medium can be introduced and exported. Furthermore, with the cooperation of two adjustment knobs, the overall length of the heat insulation telescopic tube, the first heat insulation piston, and the heat insulation assembly can be easily adjusted. This allows the introduced cooling medium to indirectly contact the external film material within the required section of the cooling roller, thereby achieving a good heat exchange effect.

[0010] Furthermore, the heat-insulating telescopic tube is sleeved on the outside of the heat-insulating tube assembly and inside the positioning ring. The first heat-insulating piston and the heat-insulating component are located at both ends of the positioning ring and are slidably sleeved on the outer surface of the heat-insulating tube assembly. The first heat-insulating piston and the heat-insulating component are sealed and sleeved inside the cooling roller. The two ends of the heat-insulating telescopic tube are fixedly connected between the first heat-insulating piston and the heat-insulating component. The outer circumferential diameter of the heat-insulating telescopic tube is smaller than the outer circumferential diameter of the first heat-insulating piston and the heat-insulating component. A gap is left between the outer surface of the heat-insulating telescopic tube and the inner wall of the positioning ring. The inner diameter of the heat-insulating telescopic tube is larger than the outer circumferential diameter of the heat-insulating tube assembly. Due to the installation of the heat-insulating telescopic tube, with the cooperation of the first heat-insulating piston and the heat-insulating component, an adjustable independent space can be created inside the cooling roller. This independent space is in direct contact with the heat-conducting section of the corresponding length on the cooling roller to accommodate film materials of different widths.

[0011] Furthermore, the heat insulation assembly includes a second heat insulation piston that is movably sleeved between the cooling roller and the heat insulation tube assembly. The outer surfaces of the second heat insulation piston and the first heat insulation piston are provided with a plurality of uniformly distributed adapter grooves. The second heat insulation piston and the first heat insulation piston are adapted to their respective corresponding heat flow rings through the adapter grooves. Due to the adapter groove, under the constraint of the cooling roller, when the first and second heat-insulating pistons are controlled to rotate by the heat-insulating tube assembly, the second and first heat-insulating pistons can move synchronously away from or towards each other in cooperation with the adapter groove and the heat flow ring. Thus, with the cooperation of the heat-insulating telescopic tube, the effect of adjusting the independent space can be achieved, and it can be ensured that the middle part of the independent space before and after adjustment is always located in the middle of the cooling roller. This ensures that the length of the adjusted independent space can be accurately matched with the width and position of the roll film material.

[0012] Furthermore, a sealing slip ring is fixedly sleeved in the middle of both the second and first heat-insulating pistons. The first and second heat-insulating pistons are slidably sleeved on the outer surface of the heat-insulating tube assembly through the sealing slip ring. The cross-section of the inner wall of the sealing slip ring and the cross-section of the outer surface of the heat-insulating tube assembly are both polygonal. The outer surface of the heat-insulating tube assembly and the inner wall of the sealing slip ring are both smooth structures that are adapted to each other. The sealing slip ring reduces the wear rate between the heat insulation tube assembly, the second heat insulation piston, and the first heat insulation piston, thereby extending the service life of the first and second heat insulation pistons and ensuring that the first and second heat insulation pistons maintain a good seal with the heat insulation tube assembly as much as possible.

[0013] Furthermore, the outer surface of the second heat-insulating piston is provided with a plurality of evenly distributed connecting grooves, and a filter plate is installed inside the connecting grooves. The outer surface of the filter plate is sealed to the inside of the cooling roller, and the two ends of the second heat-insulating piston are connected to each other through the connecting grooves and the filter plate. Due to the connection groove, in conjunction with the filter plate, the cooling medium discharged from the through hole in the heat-insulating telescopic tube can contact the cooling roller outside the heat-insulating telescopic tube and between the first heat-insulating piston and the second heat-insulating piston, and then be discharged through the connection groove and the filter plate, and finally discharged through the discharge hole, the discharge chamber and the discharge pipe.

[0014] Furthermore, the heat insulation tube assembly includes an adjusting rod that is slidably sleeved inside the left and right sealing slip rings of the first and second heat insulation pistons. The two ends of the adjusting rod pass through the cooling roller and extend to the outside of the left and right encapsulation covers, respectively, and are connected to the left and right adjusting knobs, respectively.

[0015] Furthermore, the outer surface of the middle part of the adjusting rod is provided with several feeding holes, which are located inside the heat-insulating telescopic tube and between the first heat-insulating piston and the second heat-insulating piston. The end of the adjusting rod near the feeding tube is provided with a feeding chamber.

[0016] Furthermore, a through hole is provided on the outer surface of the heat-insulating telescopic tube near the end of the first heat-insulating piston. The inner and outer sides of the heat-insulating telescopic tube are connected to each other by the through hole. The feed tube is connected to the inside of the heat-insulating telescopic tube through a corresponding adjustment knob, the feed chamber and the feed hole, and finally connected to the area between the first heat-insulating piston and the second heat-insulating piston in the cooling roller through the through hole.

[0017] Furthermore, the outer surface of the adjusting rod near the end of the discharge pipe has several discharge holes, which are located between the second heat-insulating piston and a corresponding encapsulation cover. The adjusting rod near the end of the discharge pipe has a discharge chamber, one end of which is connected to the discharge hole. The discharge pipe is connected to the interior of the cooling roller through a corresponding adjusting knob, the discharge chamber, and the discharge hole. The heat-insulating telescopic tube and the cooling roller are connected to the discharge hole through a connecting groove and a filter plate, as well as the area between the discharge pipe and the second heat-insulating piston inside the cooling roller. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the cooling roller of this utility model; Figure 4 for Figure 3 A sectional view of the front of the central structure; Figure 5 This is a schematic diagram of the structure of the heat insulation component of this utility model.

[0019] The attached diagram lists the components represented by each number as follows: 1. Cooling roller; 2. Heat insulation ring; 3. Encapsulation cover plate; 4. Adjustment knob; 5. Feed pipe; 6. Discharge pipe; 7. Heat insulation telescopic pipe; 8. First heat insulation piston; 9. Heat insulation assembly; 91. Second heat insulation piston; 92. Sealing slip ring; 93. Adaptor groove; 94. Connecting groove; 95. Filter plate; 10. Heat insulation tube assembly; 101. Adjustment rod; 102. Feed hole; 103. Feed chamber; 104. Discharge hole; 105. Discharge chamber; 11. Positioning ring; 12. Heat flow ring. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0023] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0024] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0025] Example like Figures 1 to 5 As shown, a cooling roller includes: a cooling roller 1, which is composed of several heat-conducting rings and heat-insulating rings 2. The several heat-conducting rings are of the same size and pass through both ends. A heat-insulating ring 2 is attached between two adjacent heat-conducting rings. The several heat-conducting rings and heat-insulating rings 2 are alternately distributed and fixedly connected. A sealing cover plate 3 is fixedly connected to the far ends of the two heat-conducting rings at both ends. The interiors of the several heat-conducting rings and heat-insulating rings 2 are sealed by the two sealing cover plates 3. A dividing assembly is fitted inside the cooling roller 1. The two ends of the dividing assembly extend to the two ends of the cooling roller 1 and are respectively connected to an adjustment knob 4. By rotating one of the two adjustment knobs 4, the two ends of the dividing assembly move closer or further apart along the interior of the cooling roller 1. The far ends of the two adjustment knobs 4 are respectively movably connected to the feed pipe 5 and the discharge pipe 6. The near ends of the feed pipe 5 and the discharge pipe 6 are respectively connected to the two ends of the dividing assembly through their respective adjustment knobs 4.

[0026] By setting several heat-conducting rings and heat-insulating rings 2 in the cooling roller 1, the cooling roller 1 can be divided into several independent segments by the heat-conducting angle. With the cooperation of the heat-insulating rings 2, several independent heat-conducting segments can be realized. Furthermore, with the cooperation of the internal dividing components, the required length of the heat-conducting segment can be adjusted on the cooling roller 1 to match the width of the film material to be cooled, effectively improving thermal efficiency and reducing heat loss.

[0027] The dividing assembly consists of a heat-insulating telescopic tube 7, a first heat-insulating piston 8, a heat-insulating component 9, and a heat-insulating tube group 10. The first heat-insulating piston 8 is located between the cooling roller 1 and the heat-insulating tube group 10, near the end of the feed pipe 5. The heat-insulating component 9 is located between the cooling roller 1 and the heat-insulating tube group 10, near the end of the discharge pipe 6. A positioning ring 11 is fixedly sleeved in the middle of the cooling roller 1. A heat flow ring 12 is provided at both ends of the positioning ring 11. The two heat flow rings 12 are symmetrical to each other and are fixedly sleeved inside the cooling roller 1. Due to the setting of the heat insulation tube assembly 10, the cooling medium can be introduced and exported. Moreover, with the cooperation of the two adjustment knobs 4, the overall length of the heat insulation telescopic tube 7, the first heat insulation piston 8 and the heat insulation assembly 9 can be easily adjusted, so that the introduced cooling medium can indirectly contact the external film material in the required section inside the cooling roller 1, thereby achieving a good heat exchange effect.

[0028] The heat-insulating telescopic tube 7 is sleeved on the outside of the heat-insulating tube assembly 10 and inside the positioning ring 11. The first heat-insulating piston 8 and the heat-insulating component 9 are located at both ends of the positioning ring 11 and are slidably sleeved on the outer surface of the heat-insulating tube assembly 10. The first heat-insulating piston 8 and the heat-insulating component 9 are sealed and sleeved inside the cooling roller 1. The two ends of the heat-insulating telescopic tube 7 are fixedly connected between the first heat-insulating piston 8 and the heat-insulating component 9. The outer diameter of the heat-insulating telescopic tube 7 is smaller than the outer diameter of the first heat-insulating piston 8 and the heat-insulating component 9. There is a gap between the outer surface of the heat-insulating telescopic tube 7 and the inner wall of the positioning ring 11. The inner diameter of the heat-insulating telescopic tube 7 is larger than the outer diameter of the heat-insulating tube assembly 10. Due to the installation of the heat-insulating telescopic tube 7, with the cooperation of the first heat-insulating piston 8 and the heat-insulating component 9, an adjustable independent space can be opened up inside the cooling roller 1. This independent space is in direct contact with the heat-conducting section of the corresponding length on the cooling roller 1 to accommodate roll film materials of different widths.

[0029] Among them, the heat insulation component 9 includes a second heat insulation piston 91 that is movably sleeved between the cooling roller 1 and the heat insulation tube group 10. The outer surfaces of the second heat insulation piston 91 and the first heat insulation piston 8 are provided with a number of uniformly distributed adapter grooves 93. The second heat insulation piston 91 and the first heat insulation piston 8 are adapted to their respective corresponding heat flow rings 12 through the adapter grooves 93. Due to the setting of the adapter groove 93, under the restriction of the cooling roller 1, when the first heat-insulating piston 8 and the second heat-insulating piston 91 are rotated by the heat-insulating tube group 10, the second heat-insulating piston 91 and the first heat-insulating piston 8 can move away from or towards each other synchronously with the cooperation of the adapter groove 93 and the heat flow ring 12. Thus, with the cooperation of the heat-insulating telescopic tube 7, the effect of adjusting the independent space can be achieved, and it can be ensured that the middle part of the independent space before and after adjustment is always located in the middle of the cooling roller 1. This ensures that the length of the adjusted independent space can be accurately matched with the width and position of the roll film material.

[0030] In this embodiment, a sealing slip ring 92 is fixedly sleeved in the middle of both the second heat-insulating piston 91 and the first heat-insulating piston 8. The first heat-insulating piston 8 and the second heat-insulating piston 91 are slidably sleeved on the outer surface of the heat-insulating tube assembly 10 through the sealing slip ring 92. The cross-section of the inner wall of the sealing slip ring 92 and the cross-section of the outer surface of the heat-insulating tube assembly 10 are both polygonal. The outer surface of the heat-insulating tube assembly 10 and the inner wall of the sealing slip ring 92 are both mutually adapted smooth structures. Due to the installation of the sealing slip ring 92, the wear rate between the heat insulation tube assembly 10, the second heat insulation piston 91, and the first heat insulation piston 8 can be reduced, thereby extending the service life of the first heat insulation piston 8 and the second heat insulation piston 91, while ensuring that the first heat insulation piston 8 and the second heat insulation piston 91 maintain a sealing effect with the heat insulation tube assembly 10 as much as possible.

[0031] Among them, the outer surface of the second heat-insulating piston 91 is also provided with several evenly distributed connecting grooves 94, and a filter plate 95 is installed inside the connecting grooves 94. The outer surface of the filter plate 95 is sealed and fitted inside the cooling roller 1. The two ends of the second heat-insulating piston 91 are connected to each other through the connecting grooves 94 and the filter plate 95. Due to the connection groove 94, with the cooperation of the filter plate 95, the cooling medium discharged from the through hole in the heat insulation expansion tube 7 can contact the cooling roller 1 outside the heat insulation expansion tube 7 and between the first heat insulation piston 8 and the second heat insulation piston 91, and then be discharged by the connection groove 94 and the filter plate 95, and finally discharged through the discharge hole 104, the discharge chamber 105 and the discharge pipe 6.

[0032] The heat insulation tube assembly 10 includes an adjusting rod 101 that is slidably sleeved inside the left and right sealing slip rings 92 of the first heat insulation piston 8 and the second heat insulation piston 91. The two ends of the adjusting rod 101 pass through the cooling roller 1 and extend to the outside of the left and right encapsulation cover plates 3 respectively, and are respectively connected to the left and right adjusting knobs 4.

[0033] The adjusting rod 101 has several feed holes 102 on its outer surface in the middle. The feed holes 102 are located inside the heat-insulating telescopic tube 7 and between the first heat-insulating piston 8 and the second heat-insulating piston 91. The adjusting rod 101 has a feed chamber 103 at one end near the feed tube 5.

[0034] Among them, the outer surface of the heat-insulating telescopic tube 7 is provided with a through hole at one end near the first heat-insulating piston 8. The inner and outer sides of the heat-insulating telescopic tube 7 are connected to each other by the through hole. The feed tube 5 is connected to the inside of the heat-insulating telescopic tube 7 through a corresponding adjustment knob 4, the feed chamber 103 and the feed hole 102, and finally connected to the area between the first heat-insulating piston 8 and the second heat-insulating piston 91 in the cooling roller 1 through the through hole.

[0035] Among them, the outer surface of the adjusting rod 101 near the end of the discharge pipe 6 is provided with several discharge holes 104. The discharge holes 104 are located between the second heat insulation piston 91 and a corresponding encapsulation cover plate 3. The end of the adjusting rod 101 near the discharge pipe 6 is provided with a discharge chamber 105. One end of the discharge chamber 105 is connected to the discharge hole 104. The discharge pipe 6 is connected to the interior of the cooling roller 1 through a corresponding adjusting knob 4, the discharge chamber 105 and the discharge hole 104. The heat insulation telescopic tube 7 and the cooling roller 1 are connected to the discharge hole 104 through the connecting groove 94 and the filter plate 95, as well as the area between the discharge pipe 6 and the second heat insulation piston 91 inside the cooling roller 1.

[0036] Rotating either the left or right adjustment knob 4 will cause the first heat-insulating piston 8 and the second heat-insulating piston 91 to rotate via the adjustment rod 101. This, in conjunction with the heat flow ring 12, causes the first heat-insulating piston 8 and the second heat-insulating piston 91 to move closer or further apart. Simultaneously, in conjunction with the heat-insulating telescopic tube 7, the first heat-insulating piston 8 and the heat-insulating assembly 9 can form a centrally symmetrical and adjustable independent sealed space between the cooling roller 1 and the heat-insulating telescopic tube 7. The length of this independent sealed space is adapted to the width of the outer film material of the cooling roller 1. Cooling medium can be injected into this independent space through the feed pipe 5, the feed chamber 103, and the feed hole 102. After the cooling roller 1 comes into contact with the outer film material, the medium is discharged through the discharge hole 104 and the discharge chamber 105 and then through the discharge pipe 6 after the connecting groove 94 and the filter plate 95 separate.

[0037] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A cooling roller, characterized in that: include: Cooling roller (1), the cooling roller (1) is composed of several heat-conducting rings and heat-insulating rings (2). The several heat-conducting rings are of the same size and pass through both ends. A heat-insulating ring (2) is attached between two adjacent heat-conducting rings. The several heat-conducting rings and heat-insulating rings (2) are alternately distributed and fixedly connected. A sealing cover plate (3) is fixedly connected to the far end of the two heat-conducting rings at both ends. The interior of the several heat-conducting rings and heat-insulating rings (2) is sealed by the two sealing cover plates (3). The cooling roller (1) is fitted with a dividing component inside. The two ends of the dividing component extend to the two ends of the cooling roller (1) and are respectively connected to an adjustment knob (4). By rotating one of the two adjustment knobs (4), the two ends of the dividing component move closer or further apart along the interior of the cooling roller (1). The far ends of the two adjustment knobs (4) are respectively connected to a feed pipe (5) and a discharge pipe (6). The near ends of the feed pipe (5) and the discharge pipe (6) are respectively connected to the two ends of the dividing component through their respective adjustment knobs (4).

2. A cooling roller according to claim 1, characterized in that: The dividing assembly consists of a heat-insulating telescopic tube (7), a first heat-insulating piston (8), a heat-insulating component (9), and a heat-insulating tube group (10). The first heat-insulating piston (8) is located between the cooling roller (1) and the heat-insulating tube group (10) at one end near the feed pipe (5). The heat-insulating component (9) is located between the cooling roller (1) and the heat-insulating tube group (10) at one end near the discharge pipe (6). A positioning ring (11) is fixedly sleeved in the middle of the cooling roller (1). A heat flow ring (12) is provided at both ends of the positioning ring (11). The two heat flow rings (12) are symmetrical to each other and are fixedly sleeved inside the cooling roller (1).

3. A cooling roller according to claim 2, characterized in that: The heat-insulating telescopic tube (7) is sleeved on the outside of the heat-insulating tube assembly (10) and inside the positioning ring (11). The first heat-insulating piston (8) and the heat-insulating component (9) are located at both ends of the positioning ring (11) and are slidably sleeved on the outer surface of the heat-insulating tube assembly (10). The first heat-insulating piston (8) and the heat-insulating component (9) are sealed and sleeved inside the cooling roller (1). The two ends of the heat-insulating telescopic tube (7) are fixedly connected between the first heat-insulating piston (8) and the heat-insulating component (9). The outer diameter of the heat-insulating telescopic tube (7) is smaller than the outer diameter of the first heat-insulating piston (8) and the heat-insulating component (9). There is a gap between the outer surface of the heat-insulating telescopic tube (7) and the inner wall of the positioning ring (11). The inner diameter of the heat-insulating telescopic tube (7) is larger than the outer diameter of the heat-insulating tube assembly (10).

4. A cooling roller according to claim 2, characterized in that: The heat insulation assembly (9) includes a second heat insulation piston (91) that is movably sleeved between the cooling roller (1) and the heat insulation tube assembly (10). The outer surfaces of the second heat insulation piston (91) and the first heat insulation piston (8) are provided with a plurality of uniformly distributed adapter grooves (93). The second heat insulation piston (91) and the first heat insulation piston (8) are adapted to their respective corresponding heat flow rings (12) through the adapter grooves (93).

5. A cooling roller according to claim 4, characterized in that: The middle part of the second heat-insulating piston (91) and the first heat-insulating piston (8) is fixedly fitted with a sealing slip ring (92). The first heat-insulating piston (8) and the second heat-insulating piston (91) are slidably fitted onto the outer surface of the heat-insulating tube assembly (10) through the sealing slip ring (92). The cross-section of the inner wall of the sealing slip ring (92) and the cross-section of the outer surface of the heat-insulating tube assembly (10) are both polygonal. The outer surface of the heat-insulating tube assembly (10) and the inner wall of the sealing slip ring (92) are both smooth structures that are adapted to each other.

6. A cooling roller according to claim 4, characterized in that: The outer surface of the second heat-insulating piston (91) is also provided with a number of evenly distributed connecting grooves (94). A filter plate (95) is installed inside the connecting groove (94). The outer surface of the filter plate (95) is sealed to the inside of the cooling roller (1). The two ends of the second heat-insulating piston (91) are connected to each other through the connecting groove (94) and the filter plate (95).

7. A cooling roller according to claim 5, characterized in that: The heat insulation tube assembly (10) includes an adjusting rod (101) which is slidably sleeved inside the left and right sealing slip rings (92) of the first heat insulation piston (8) and the second heat insulation piston (91). The two ends of the adjusting rod (101) pass through the cooling roller (1) and extend to the outside of the left and right encapsulation cover plates (3), and are respectively connected to the left and right adjusting knobs (4).

8. A cooling roller according to claim 7, characterized in that: The outer surface of the middle part of the adjusting rod (101) is provided with several feed holes (102). The feed holes (102) are located inside the heat insulation telescopic tube (7) and between the first heat insulation piston (8) and the second heat insulation piston (91). The end of the adjusting rod (101) near the feed tube (5) is provided with a feed chamber (103).

9. A cooling roller according to claim 8, characterized in that: The outer surface of the heat-insulating telescopic tube (7) is provided with a through hole at one end near the first heat-insulating piston (8). The inner and outer sides of the heat-insulating telescopic tube (7) are connected to each other by the through hole. The feed tube (5) is connected to the inside of the heat-insulating telescopic tube (7) through a corresponding adjustment knob (4), the feed chamber (103) and the feed hole (102), and finally connected to the area between the first heat-insulating piston (8) and the second heat-insulating piston (91) in the cooling roller (1) through the through hole.

10. A cooling roller according to claim 7, characterized in that: The outer surface of the adjusting rod (101) near the end of the discharge pipe (6) is provided with several discharge holes (104). The discharge holes (104) are located between the second heat insulation piston (91) and a corresponding encapsulation cover plate (3). The adjusting rod (101) near the end of the discharge pipe (6) is provided with a discharge chamber (105). One end of the discharge chamber (105) is connected to the discharge hole (104). The discharge pipe (6) is connected to the interior of the cooling roller (1) through a corresponding adjusting knob (4), the discharge chamber (105), and the discharge hole (104). The heat insulation telescopic tube (7) and the cooling roller (1) are connected to the discharge hole (104) through the connecting groove (94) and the filter plate (95), as well as the area between the discharge pipe (6) and the second heat insulation piston (91) in the cooling roller (1).

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