A peripheral heating corrugation roller

Abstract

The utility model discloses a kind of periphery heating corrugated roller, including roller, steam inlet end shaft head, steam closing end shaft head and steam pipe tube core, roller is provided with central hole and periphery hole, steam inlet end shaft head is provided with mounting hole, steam outlet hole, steam inlet connecting hole and steam outlet connecting hole, steam closing end shaft head is provided with back steam groove, steam pipe tube core is installed in mounting hole and is provided with steam inlet hole and first connecting hole.Steam enters from steam inlet hole, enters steam inlet connecting hole through first connecting hole, subsequently enters periphery hole, then pass through back steam groove and enter central hole, finally pass through steam outlet connecting hole and steam outlet backflow to steam source equipment in circulation.The periphery heating corrugated roller passes through setting several periphery holes and passes steam, improve the heating speed of roller, and steam backflow central hole makes the inner wall of roller be heated from two sides, is heated more evenly, effectively reduce the generation of condensate, to avoid the influence of condensate on corrugated roller speed, simultaneously avoid the deformation problem caused by uneven heating of corrugated roller.

Description

Technical Field

[0001] This utility model relates to the field of corrugated roller technology, and in particular to a peripherally heated corrugated roller. Background Technology

[0002] Currently, the primary heating method for corrugated rolls used in corrugated cardboard equipment is steam. Traditional corrugated rolls are hollow cylindrical tubes surrounded by a roll base, with the hollow interior resembling a cylinder. During operation, steam enters the interior through the inlet. As the roll rotates, the heat on the roll surface is carried away by the paper, causing it to cool. The hot steam inside the roll condenses upon contact with the cool base, and this condensate is then drawn out through a siphon at the bottom of the roll and discharged outside along with excess steam via a return pipe. Due to the large internal space of the roll, it takes a considerable amount of time to fill with saturated high-temperature steam, so preheating for 25-30 minutes is necessary before use. Additionally, the thick walls of the roll mean that heat transfer from the steam to the roll surface also takes a long time, increasing heat loss. In addition, when the corrugated roll is running at high speed, the condensate that cannot be discharged will affect heat transfer on the inner wall of the roll, preventing the roll surface temperature from rising and making it impossible to operate at high speed. On the other hand, when the machine stops, the large temperature difference between the top and bottom of the roll due to the condensate inside the roll will cause thermal deformation of the roll body, resulting in paperboard waste when restarting the machine. It will also affect the abnormal wear of other mechanical parts such as the corrugated roll and the glue coating roll.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a peripherally heated corrugated roller, which aims to solve the technical problems of slow heating speed, large heat loss, and easy condensation leading to deformation in the center heating method of corrugated rollers in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A peripherally heated corrugated roller includes a roller, a steam inlet end shaft, and a steam shut-off end shaft. The roller has a central hole, and the steam inlet end shaft and the steam shut-off end shaft are respectively installed at both ends of the central hole. The roller wall is provided with several peripheral holes, which are evenly arranged around the central hole and parallel to the axis of the central hole; The steam inlet end shaft head is provided with a steam outlet hole and a mounting hole. The steam outlet hole is connected to several steam outlet connection holes, which are respectively connected to the central hole. A steam pipe core is embedded in the mounting hole. The mounting hole is connected to several steam inlet connection holes, which are respectively connected to several peripheral holes. The steam inlet connection holes and the steam outlet connection holes are arranged in a staggered and spaced manner. The steam pipe core is provided with a steam inlet hole, which is a blind hole. The closed end of the steam inlet hole is located near the center hole. Several first connecting holes are provided on the hole wall near the closed end of the steam inlet hole. The several first connecting holes are connected to several steam inlet connecting holes respectively. A steam outlet gap is formed between the outer wall of the steam inlet hole and the inner wall of the steam outlet hole. The closed-end shaft head is provided with several steam return grooves, which are connected to several peripheral holes and to the central hole.

[0006] The peripheral heating corrugated roller has a through hole at both ends, which is used to seal the peripheral hole.

[0007] The peripheral heating corrugated roller has several second connecting holes and several third connecting holes that are connected to the central hole at both ends of the peripheral hole. The several second connecting holes are connected to several steam inlet connecting holes, and the several third connecting holes are connected to several steam return grooves.

[0008] The peripherally heated corrugated roller has a first annular groove on the outer side of the steam inlet end shaft, which is connected to a number of steam inlet connection holes and a number of second connection holes.

[0009] The peripherally heated corrugated roller has a second annular groove on the outer side of the steam pipe core, which is connected to a number of first connecting holes and a number of steam inlet connecting holes.

[0010] The peripheral heating corrugated roller has a third annular groove on the inner side of the steam inlet end shaft head. The third annular groove is connected to the steam outlet hole and several steam outlet connection holes, and the third annular groove is located between the mounting hole and the steam outlet hole.

[0011] The peripheral heating corrugated roller has a fourth annular groove on the outer side of the closed-end shaft head, which is connected to several third connecting holes and several return steam grooves.

[0012] The peripherally heated corrugated roller further includes a plurality of pins, which are respectively installed in a plurality of second connecting holes and are respectively connected to a first annular groove and a plurality of peripheral holes.

[0013] The peripheral heating corrugated roller has a notch on one side wall of the pin tube near the third connecting hole, and the notch is located at the end of the pin tube that extends into the peripheral hole.

[0014] The peripheral heating corrugated roller has a limiting step on the inner wall of both ends of the central hole. The limiting step is used to stop the limiting steam inlet end shaft head and the steam shut-off end shaft head.

[0015] Beneficial effects: This utility model provides a peripherally heated corrugated roller, including a roller, a steam inlet end shaft, a steam-closed end shaft, and a steam pipe core. The roller has a central hole and several peripheral holes. The steam inlet end shaft has an installation hole, a steam outlet hole, several steam inlet connection holes, and several steam outlet connection holes. The steam-closed end shaft has several steam return grooves. The steam pipe core is installed in the installation hole and has a steam inlet hole and several first connection holes. In actual production applications, steam supplied by the steam source equipment enters through the steam inlet hole, passes through the first connection holes into the steam inlet connection hole, and then enters the peripheral holes, causing the roller wall to heat up rapidly. A continuous supply of steam enters the peripheral holes, passes through the steam return grooves into the central hole, and finally flows back to the steam source equipment through the steam outlet connection holes and steam outlet holes for circulation. This peripherally heated corrugated roller improves the heating speed of the roller by setting several peripheral holes for steam to pass through. The steam returns to the central hole so that the inner wall of the roller is heated from both sides, resulting in more uniform heating and effectively reducing the generation of condensate. This avoids the impact of condensate on the rotation speed of the corrugated roller and also avoids the deformation problem caused by uneven heating of the corrugated roller. Attached Figure Description

[0016] Figure 1 A schematic diagram of the first cross-sectional structure of the peripheral heating corrugated roller provided by this utility model; Figure 2 A schematic diagram of the second cross-sectional structure of the peripherally heated corrugated roller provided by this utility model; Figure 3 A schematic diagram of the third cross-sectional structure of the peripherally heated corrugated roller provided by this utility model; Figure 4 An exploded view of the peripheral heating corrugated roller provided by this utility model; Figure 5 Provided by this utility model Figure 1 A partial structural diagram of A in the middle; Figure 6 This is a cross-sectional structural diagram of the steam inlet shaft head provided by this utility model.

[0017] Figure label: 1—Roller; 2—Steam inlet shaft; 3—Steam shut-off shaft 4—Steam pipe core; 5—Plug; 6—Pin pipe 11—Center hole; 12—Peripheral hole; 13—Second connecting hole 14—Third connecting hole; 15—Limiting step; 21—Steam outlet. 22—Mounting hole; 23—Steam outlet connection hole; 24—Steam inlet connection hole 25—First annular groove; 26—Third annular groove; 31—Return steam groove 32—Fourth annular groove; 41—Steam inlet hole; 42—First connecting hole 43—Second annular groove; 61—Notch. Detailed Implementation

[0018] This utility model provides a peripherally heated corrugated roller. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0020] Please see Figures 1 to 6 As shown, this utility model provides a peripherally heated corrugated roller, including a roller 1, a steam inlet end shaft 2, and a steam shut-off end shaft 3. The roller 1 is provided with an axial central hole 11. The steam inlet end shaft 2 and the steam shut-off end shaft 3 are respectively installed at both ends of the central hole 11. The steam inlet end shaft 2 and the steam shut-off end shaft 3 are respectively sealed to the roller wall to prevent steam leakage from the installation gap. The roller 1 has a plurality of peripheral holes 12 on its cylinder wall. The peripheral holes 12 are evenly arranged around the central hole 11 and are parallel to the central hole 11 axially. In this embodiment, the peripheral holes 12 are through holes that extend from one end of the roller 1 to the other end. The two ends of the peripheral holes 12 are provided with plugs 5. The plugs 5 are used to seal the peripheral holes 12 and prevent steam from leaking out of the roller 1, which could cause steam burns or steam loss and lifting losses.

[0021] The steam inlet end shaft head 2 is provided with a steam outlet hole 21 and a mounting hole 22. The steam outlet hole 21 is connected to a plurality of steam outlet connection holes 23, which are respectively connected to the central hole 11. A steam pipe core 4 is embedded in the mounting hole 22. The mounting hole 22 is connected to a plurality of steam inlet connection holes 24, which are respectively connected to a plurality of peripheral holes 12. The plurality of steam inlet connection holes 24 and the plurality of steam outlet connection holes 23 are arranged in a staggered manner. In this embodiment, the steam inlet end shaft head 2 is used to connect to a steam source device. The steam outlet hole 21 is connected to the steam source device to return the steam in the corrugated roller to the steam source device for reuse. The steam pipe core 4 is also connected to the steam source device to allow steam to enter the corrugated roller. The steam pipe core 4 is sealed in the mounting hole 22 to prevent steam from leaking from the gap between the inner wall of the mounting hole 22 and the steam pipe core 4, which would affect the flow of steam and thus affect the normal heating and use of the corrugated roller.

[0022] The steam pipe core 4 is provided with a steam inlet hole 41, which is a blind hole. The closed end of the steam inlet hole 41 is located near the central hole 11. Several first connecting holes 42 are provided on the hole wall of the steam inlet hole 41 near the closed end. The several first connecting holes 42 are respectively connected to several steam inlet connecting holes 24. A steam outlet gap is formed between the outer wall of the steam inlet hole 41 and the inner wall of the steam outlet hole 21. In this embodiment, the axes of the several first connecting holes 42 are respectively perpendicular to the axis of the steam inlet hole 41. The steam inlet hole 41 and the steam outlet hole 21 are coaxially arranged and the steam inlet hole 41 is located inside the steam outlet hole 21. The first connecting holes 42 are not connected to the steam outlet hole 21.

[0023] The closed-end shaft head 3 is provided with several steam return grooves 31, which are connected to several peripheral holes 12 respectively. The steam return grooves 31 are connected to the center hole 11 respectively. The steam return grooves 31 are formed by recessing from the outside of the closed-end shaft head 3. The peripheral holes 12 and the center hole 11 are connected through the steam return grooves 31, so that the steam channel in the entire corrugated roller and the steam source equipment form a closed loop, realizing uniform heating and circulation of steam.

[0024] In actual production applications, steam supplied by the steam source equipment enters through the steam inlet 41, passes through the first connecting hole 42 into the steam inlet connection hole 24, and then enters the peripheral holes 12, causing the cylinder wall of roller 1 to heat up rapidly. A continuous stream of steam enters the peripheral holes 12, then passes through the return steam groove 31 into the central hole 11, and finally flows back to the steam source equipment through the steam outlet connection hole 23 and the steam outlet hole 21 for circulation. This peripherally heated corrugated roller, by setting several peripheral holes 12 for steam flow, increases the heating speed of roller 1. The steam return to the central hole 11 ensures that the inner wall of roller 1 is heated from both sides, resulting in more uniform heating and effectively reducing condensate generation. This avoids the impact of condensate on the rotational speed of the corrugated roller and also prevents deformation caused by uneven heating.

[0025] Please see Figures 1 to 3 As shown, each end of the peripheral hole 12 is provided with a plurality of second connecting holes 13 and a plurality of third connecting holes 14 that communicate with the central hole 11. The plurality of second connecting holes 13 are respectively connected to a plurality of steam inlet connecting holes 24, and the plurality of third connecting holes 14 are respectively connected to a plurality of steam return channels 31. In this embodiment, the second connecting holes 13 and the third connecting holes 14 are both located on the inner wall of the roller 1, and the number of second connecting holes 13 is equal to the number of third connecting holes 14 and equal to the number of peripheral holes 12. When the steam inlet end shaft head 2 and the steam-closing end shaft head 3 are not installed, the second connecting holes 13 and the third connecting holes 14 are respectively connected to the central hole 11; when the steam inlet end shaft head 2 and the steam-closing end shaft head 3 are installed, the second connecting holes 13 and the third connecting holes 14 are respectively connected to the steam inlet connecting holes 24 and the steam return channels 31, establishing a circulating steam channel.

[0026] Please see Figure 2 , Figures 4 to 6 As shown, a first annular groove 25 is provided on the outer side of the steam inlet shaft head 2. The first annular groove 25 is formed by recessing from the outer side of the steam inlet shaft head 2 inward. The first annular groove 25 is connected to a plurality of steam inlet connection holes 24 and a plurality of second connection holes 13. In this embodiment, since the diameter of the steam inlet shaft head 2 is smaller than the diameter of the roller 1, and both steam inlet connection holes 24 and steam outlet connection holes 23 need to be provided at the same time, the number of steam inlet connection holes 24 is necessarily less than the number of peripheral holes 12, that is, less than the number of second connection holes 13. In order to ensure that steam can be introduced into each peripheral hole 12, the first annular groove 25 is required to converge all the steam inlet connection holes 24 and connect all the second connection holes 13, so that the steam input from a few steam inlet connection holes 24 can simultaneously enter the majority of peripheral holes 12. The first annular groove 25 plays the role of converging and then diverting.

[0027] Please see Figures 4 to 5 As shown, a second annular groove 43 is provided on the outer side of the steam pipe core 4. The second annular groove 43 is formed by recessing from the outer side of the steam pipe core 4 inward. The second annular groove 43 connects to a plurality of first connecting holes 42 and a plurality of steam inlet connecting holes 24. In this embodiment, since the diameter of the steam pipe core 4 is smaller than the diameter of the steam inlet end shaft 2, the number of first connecting holes 42 is necessarily less than the number of steam inlet connecting holes 24. To ensure that steam can enter each steam inlet connecting hole 24, the second annular groove 43 is provided to converge all the first connecting holes 42 and connect all the steam inlet connecting holes 24, so that steam input from a few first connecting holes 42 can simultaneously enter a majority of steam inlet connecting holes 24. The second annular groove 43 plays the role of converging and then distributing.

[0028] Please see Figure 2 , Figures 4 to 6As shown, a third annular groove 26 is provided on the inner side of the steam inlet shaft head 2. The third annular groove 26 is formed by recessing outward from the inner wall of the steam outlet hole 21. The third annular groove 26 connects the steam outlet hole 21 to several steam outlet connection holes 23. The third annular groove 26 is located between the mounting hole 22 and the steam outlet hole 21. In this embodiment, several steam outlet connection holes 23 are evenly arranged around the mounting hole 22 and are parallel to the axial direction of the steam outlet hole 21. The third annular groove 26 connects and converges all the steam outlet connection holes 23, and then connects them to the steam outlet hole 21, thus serving to collect steam.

[0029] Please see Figures 3 to 4 As shown, a fourth annular groove 32 is provided on the outer side of the closed-end shaft head 3. The fourth annular groove 32 is connected to several third connecting holes 14 and several return steam grooves 31. In this embodiment, the fourth annular groove 32 is formed by recessing from the outer side of the closed-end shaft head 3. Since the diameter of the closed-end shaft head 3 is smaller than the diameter of the roller 1, the number of return steam grooves 31 is necessarily less than the number of peripheral holes 12, that is, less than the number of third connecting holes 14. Therefore, it is necessary to set the fourth annular groove 32 to connect all the third connecting holes 14 and connect all the return steam grooves 31, so that the steam from all the peripheral holes 12 can be dispersed through each return steam groove 31 and enter the central hole 11. The fourth annular groove 32 plays the role of converging and then distributing.

[0030] Please see Figures 2 to 5 As shown, it also includes several pins 6, which are respectively installed in several second connecting holes 13, and are respectively connected to the first annular groove 25 and several peripheral holes 12. A notch 61 is provided on the side wall of the pin 6 near the third connecting hole 14, and the notch 61 is located at the end of the pin 6 that extends into the peripheral hole 12. In this embodiment, the number of pins 6 is equal to the number of second connecting holes 13, which is also equal to the number of peripheral holes 12. The inner sidewall of the peripheral hole 12 away from the central hole 11 is provided with a groove for accommodating the end of the pin 6. Half of the notch 61 of the pin 6 is accommodated in the groove. The outer diameter of the pin 6 is smaller than the inner diameter of the peripheral hole 12, that is, the pin 6 is vertically installed in the peripheral hole 12. There is a gap between the outer wall of the pin 6 and the inner wall of the peripheral hole 12, allowing steam to pass through. The pins 6 are set to guide steam into the peripheral hole 12, and the notch 61 guides the steam so that after the steam enters the peripheral hole 12, it first moves towards the direction closer to the third connecting hole 14, rather than filling the end closer to the second connecting hole 13 first, effectively improving the overall uniform heating speed of the corrugated roller.

[0031] Please see Figure 1 and Figure 5As shown, limiting steps 15 are provided on the inner walls of both ends of the central hole 11. The limiting steps 15 are used to stop and limit the steam inlet shaft head 2 and the steam shut-off shaft head 3. In this embodiment, the two limiting steps 15 are respectively opposite to the two ends facing the roller 1. When installing the steam inlet shaft head 2 and the steam shut-off shaft head 3, the two limiting steps 15 respectively abut against the ends of the steam inlet shaft head 2 and the steam shut-off shaft head 3, avoiding over-installation or under-installation, which could lead to misalignment of the holes and steam leakage or non-conductivity. This improves the installation accuracy and efficiency of the steam inlet shaft head 2 and the steam shut-off shaft head 3.

[0032] In summary, this utility model improves the heating speed of the roller 1 by setting several peripheral holes 12 for steam to pass through. The steam return to the central hole 11 makes the inner wall of the roller 1 heated from both sides, resulting in more uniform heating and effectively reducing the generation of condensate. This avoids the influence of condensate on the rotation speed of the corrugated roller and also avoids the deformation problem of the corrugated roller caused by uneven heating.

[0033] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A peripherally heated corrugated roller, comprising a roller (1), a steam inlet end shaft (2), and a steam shut-off end shaft (3), wherein the roller (1) is provided with a central hole (11), and the steam inlet end shaft (2) and the steam shut-off end shaft (3) are respectively installed at both ends of the central hole (11), characterized in that: The roller (1) has several peripheral holes (12) on its cylinder wall. The several peripheral holes (12) are evenly arranged around the central hole (11) and are parallel to the central hole (11) axially. The steam inlet end shaft head (2) is provided with a steam outlet hole (21) and a mounting hole (22). The steam outlet hole (21) is connected to a number of steam outlet connection holes (23). The number of steam outlet connection holes (23) are respectively connected to the central hole (11). A steam pipe core (4) is embedded in the mounting hole (22). The mounting hole (22) is connected to a number of steam inlet connection holes (24). The number of steam inlet connection holes (24) are respectively connected to a number of peripheral holes (12). The number of steam inlet connection holes (24) and the number of steam outlet connection holes (23) are arranged in a staggered interval. The steam pipe core (4) is provided with a steam inlet hole (41). The steam inlet hole (41) is a blind hole. The closed end of the steam inlet hole (41) is located near the center hole (11). Several first connecting holes (42) are provided on the hole wall near the closed end of the steam inlet hole (41). The several first connecting holes (42) are connected to several steam inlet connecting holes (24) respectively. A steam outlet gap is formed between the outer wall of the steam inlet hole (41) and the inner wall of the steam outlet hole (21). The closed-end shaft head (3) is provided with several steam return grooves (31), which are connected to several peripheral holes (12) respectively, and are connected to the center hole (11) respectively.

2. The peripherally heated corrugated roller according to claim 1, characterized in that, The peripheral hole (12) is a through hole, and plugs (5) are provided at both ends of the peripheral hole (12). The plugs (5) are used to seal the peripheral hole (12).

3. The peripherally heated corrugated roller according to claim 2, characterized in that, The two ends of the peripheral hole (12) are respectively provided with a number of second connecting holes (13) and a number of third connecting holes (14) that are connected to the central hole (11). The number of second connecting holes (13) are respectively connected to a number of steam inlet connecting holes (24), and the number of third connecting holes (14) are respectively connected to a number of steam return grooves (31).

4. The perimetrically heated lamination roller of claim 3, wherein, A first annular groove (25) is provided on the outer side of the steam inlet end shaft head (2), and the first annular groove (25) is connected to a number of steam inlet connection holes (24) and a number of second connection holes (13).

5. The perimetrically heated lamination roller of claim 4, wherein, A second annular groove (43) is provided on the outer side of the steam pipe core (4), and the second annular groove (43) is connected to a number of first connecting holes (42) and a number of steam inlet connecting holes (24).

6. The perimetrically heated lamination roller of claim 4, wherein, A third annular groove (26) is provided on the inner side of the steam inlet end shaft head (2). The third annular groove (26) is connected to the steam outlet hole (21) and several steam outlet connection holes (23). The third annular groove (26) is located between the mounting hole (22) and the steam outlet hole (21).

7. The perimetrically heated lamination roller of claim 3, wherein, A fourth annular groove (32) is provided on the outer side of the closed-end shaft head (3), and the fourth annular groove (32) is connected to several third connecting holes (14) and several return steam grooves (31).

8. The peripherally heated corrugated roller according to claim 4, characterized in that, It also includes several pins (6), which are installed in several second connecting holes (13) respectively, and are connected to the first annular groove (25) and several peripheral holes (12) respectively.

9. The peripherally heated corrugated roller according to claim 8, characterized in that, A notch (61) is provided on one side wall of the pin tube (6) near the third connecting hole (14). The notch (61) is located at the end of the pin tube (6) that extends into the peripheral hole (12).

10. The peripheral heating corrugation roller of claim 1, wherein, Limiting steps (15) are provided on the inner walls of both ends of the central hole (11). The limiting steps (15) are used to stop the limiting steam inlet shaft head (2) and the steam shut-off shaft head (3).

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