A steam testing device for corrugation roll production
By designing a steam testing device to simulate the working environment of corrugated rolls, the device drives the corrugated rolls to rotate for precise testing, solving the problems of inaccuracy and poor stability in traditional corrugated roll manufacturing, and improving the service life and product quality of corrugated rolls.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DYLENA (GUANGDONG) INTELLIGENT EQUIP MFG CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-06-05
AI Technical Summary
Traditional corrugated roll manufacturing processes do not fully consider the impact of operating temperature on material properties, resulting in dimensional inaccuracies, poor operational stability, deterioration of mechanical properties, and difficulty in identifying thermal defects during precision grinding. This leads to problems such as rapid decline in the operational accuracy of corrugated rolls, low product qualification rates, and short maintenance cycles.
A steam testing device for corrugated roll production was designed. The device simulates the working environment of the corrugated roll through a steam connection component and steam equipment, drives the corrugated roll to rotate for testing, and combines a measuring instrument for precise detection. This simulates a real working scenario to improve the accuracy of the test results.
It improves the service life and production efficiency of corrugated rollers, enhances product quality, solves the problem of insufficient inspection of corrugated rollers before fine grinding, and extends the maintenance cycle of equipment.
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Figure CN224328081U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of corrugated roll production technology, and in particular to a steam testing device for corrugated roll production. Background Technology
[0002] Corrugated rolls are the core component of corrugated board production lines, and their manufacturing quality directly affects the forming accuracy, production efficiency, and service life of the corrugated board. Traditional corrugated roll manufacturing processes mainly include material selection, blank processing, heat treatment, precision machining, tooth profile machining, surface treatment, and testing and debugging.
[0003] In traditional corrugated roll manufacturing processes, the impact of operating temperature on material properties is not fully considered, leading to the following technical defects during precision grinding: 1) Precision grinding at room temperature cannot accurately compensate for the thermal expansion and deformation of the corrugated roll during hot operation, resulting in dimensional inaccuracies in actual operation; 2) Residual stress from processing is gradually released under high-temperature conditions, causing roll deformation and affecting operational stability; 3) The material microstructure is not pre-adjusted under hot conditions, leading to deterioration of mechanical properties under high-temperature conditions; 4) Traditional detection methods are insufficient to effectively identify potential heat-induced defects, making the roll prone to early failure under thermal cycling conditions. These problems collectively result in systemic defects in corrugated rolls produced by traditional processes, such as rapid decline in operational accuracy, low product qualification rate, and short maintenance cycles, severely restricting the operating efficiency and product quality of high-speed corrugated board production lines.
[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content
[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a steam testing device for corrugated roll production, which aims to solve the technical problems in the prior art where the lack of testing before fine grinding in the production process of corrugated rolls leads to systemic defects such as rapid decline in operating accuracy, low product qualification rate, and short maintenance cycle.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A steam testing device for corrugated roll production includes a testing fixture, a steam connection assembly, and a steam device. The testing fixture is used to clamp the corrugated roll to be tested. The steam connection assembly is connected to the steam device and the corrugated roll to be tested. The steam device is used to input steam into the corrugated roll to be tested.
[0008] The testing fixture includes a base, with a first support and a second support at each end of the base. A drive assembly is mounted on the first support, which drives a first rotating wheel. A second rotating wheel is also rotatably mounted on the first support, and a third and fourth rotating wheel are rotatably mounted on the second support. The axes of the first and second rotating wheels are parallel to each other, as are the axes of the third and fourth rotating wheels. The first and second rotating wheels are used to support one end of the corrugated roller to be tested, and the third and fourth rotating wheels are used to support the other end of the corrugated roller to be tested. The corrugated roller to be tested can rotate relative to the steam connection assembly.
[0009] The steam testing device for corrugated roll production includes a rotating shaft rotatably mounted on a first support for mounting a first rotating wheel, and a second, third, and fourth rotating wheel rotatably mounted on the first support and the second support respectively via the first mounting shaft.
[0010] The steam testing device for corrugated roll production includes a drive assembly comprising a motor, a drive gear, a transmission chain, and a driven gear. The motor is fixedly mounted on the side of the first support away from the second support via a mounting bracket. The motor is driven by the drive gear, which is driven by the drive chain and connected to the driven gear. The driven gear is fixedly connected to the rotating shaft.
[0011] The steam testing device for corrugated roll production includes a first limiting wheel rotatably mounted on a first support and a second limiting wheel rotatably mounted on a second support, with the first and second limiting wheels arranged diagonally opposite each other.
[0012] The steam testing device for corrugated roll production includes a first connecting plate fixedly connected to one side of the first bracket, a first crossbeam fixedly connected to the first connecting plate, a second mounting shaft on the first crossbeam, and a first limiting wheel rotatably mounted on the second mounting shaft.
[0013] The steam testing device for corrugated roll production includes a second connecting plate on one side of the second support, a second crossbeam fixedly mounted on the second connecting plate, a third mounting shaft on the second crossbeam, and a second limiting wheel rotatably mounted on the third mounting shaft.
[0014] The steam testing device for corrugated roll production includes a steam connection frame, which is located at one end of the base and on the side of the second support away from the first support.
[0015] The steam testing device for corrugated roll production includes a locking component on the steam connection frame, which is used to lock the steam connection assembly.
[0016] The steam testing device for corrugated roll production includes connecting ribs on both sides of the steam connection assembly, which are clamped between the locking member and the steam connection frame.
[0017] The steam testing device for corrugated roll production includes a main body, a steam pipe, and a return water pipe. The main body is connected to a steam connection assembly via the steam pipe to input steam into the corrugated roll to be tested. The main body is connected to the steam connection assembly via the return water pipe to return the condensate in the corrugated roll to the main body.
[0018] Beneficial effects:
[0019] This invention provides a steam testing device for corrugated roll production, including a testing fixture, a steam connection assembly, and a steam equipment. In actual testing, the two ends of the corrugated roll to be tested are supported by a first bracket and a second bracket, respectively, and connected to the steam connection assembly. Steam is then introduced from the steam equipment. The two ends of the corrugated roll contact a first, second, third, and fourth rotating wheel, respectively. A drive assembly drives the first rotating wheel to rotate, allowing the corrugated roll to be tested to rotate to simulate the working environment. The rotating corrugated roll drives the second, third, and fourth rotating wheels to rotate, thereby reducing wear during the rotation test. Workers use various measuring instruments to test the corrugated roll. This steam testing device for corrugated roll production, while clamping the corrugated roll for steam testing, can drive the corrugated roll to rotate to simulate a real working scenario, making the test results more accurate. This facilitates the resolution of problems found during subsequent fine grinding of the corrugated roll, thereby improving the service life, working efficiency, and product quality of the corrugated roll. Attached Figure Description
[0020] Figure 1 A three-dimensional structural diagram of the steam testing device provided by this utility model;
[0021] Figure 2 A three-dimensional structural diagram of the first bracket and drive assembly provided by this utility model;
[0022] Figure 3 A three-dimensional structural diagram of the second support and steam connection frame provided by this utility model.
[0023] Figure label:
[0024] 1—Test fixture; 2—Steam connection assembly; 3—Steam equipment
[0025] 11—Base 12—First Support 13—Second Support
[0026] 14—Drive assembly; 15—Steam connection frame; 21—Connecting rib.
[0027] 31—Equipment body; 32—Steam pipe; 33—Return water pipe
[0028] 111—Guide rail; 121—First rotating wheel; 122—Second rotating wheel
[0029] 123—First mounting shaft; 124—First limiting wheel; 125—First connecting plate
[0030] 126—First crossbeam; 127—Second mounting shaft; 131—Third rotating wheel
[0031] 132—Fourth Rotary Wheel; 133—Second Limiting Rotary Wheel; 134—Second Connecting Plate
[0032] 135—Second crossbeam; 136—Third mounting shaft; 141—Rotating shaft
[0033] 142—Motor 143—Drive gear 144—Transmission chain
[0034] 145—Driven gear; 146—Mounting bracket; 151—Locking element. Detailed Implementation
[0035] This utility model provides a steam testing device for corrugated roll production. 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 for explaining this utility model and are not intended to limit this utility model.
[0036] 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.
[0037] Please see Figures 1 to 3As shown, this utility model provides a steam testing device for corrugated roll production, which includes a testing fixture 1, a steam connection assembly 2, and a steam device 3. The testing fixture 1 is used to clamp the corrugated roll to be tested. The steam connection assembly 2 is connected to the steam device 3 and the corrugated roll to be tested. The steam device 3 is used to input steam into the corrugated roll to be tested. In this embodiment, the steam device 3 and the steam connection assembly 2 are both commonly used devices in the prior art, and the steam device 3 and the steam connection assembly 2 used in corrugated paper production can be directly adopted.
[0038] The testing fixture 1 includes a base 11, with a first support 12 and a second support 13 respectively at both ends of the base 11. A drive assembly 14 is mounted on the first support 12, and the drive assembly 14 drives and connects to a first rotating wheel 121. A second rotating wheel 122 is also rotatably mounted on the first support 12, and a third rotating wheel 131 and a fourth rotating wheel 132 are rotatably mounted on the second support 13. The axes of the first rotating wheel 121 and the second rotating wheel 122 are parallel to each other, and the axes of the third rotating wheel 131 and the fourth rotating wheel 132 are parallel to each other. The first rotating wheel 121 and the second rotating wheel 122 are used to support one end of the corrugated roller to be tested, and the third rotating wheel 131 and the fourth rotating wheel 132 are used to support the other end of the corrugated roller to be tested. The corrugated roller to be tested can rotate relative to the steam connection assembly 2. In this embodiment, the first support 12 and the second support 13 have the same shape and structure. The axis of the first rotating wheel 121 and the axis of the third rotating wheel 131 are on the same axis, and the axis of the second rotating wheel 122 and the axis of the fourth rotating wheel 132 are on the same straight line. This allows the gap between the first rotating wheel 121 and the second rotating wheel 122, and the gap between the third rotating wheel 131 and the fourth rotating wheel 132, to form a groove for supporting and limiting the corrugated roller.
[0039] In actual testing, the two ends of the corrugated roll to be tested are supported by the first bracket 12 and the second bracket 13 respectively and connected to the steam connection assembly 2. Steam is then introduced from the steam equipment 3. The two ends of the corrugated roll are in contact with the first rotating wheel 121, the second rotating wheel 122, the third rotating wheel 131, and the fourth rotating wheel 132 respectively. The drive assembly 14 drives the first rotating wheel 121 to rotate, so that the corrugated roll to be tested can rotate to simulate the working environment. When the corrugated roll rotates, it will drive the second rotating wheel 122, the third rotating wheel 131, and the fourth rotating wheel 132 to rotate, thereby reducing the wear that occurs during the rotation test of the corrugated roll. Workers use various measuring instruments to test the corrugated roll. This steam testing device for corrugated roll production can drive the corrugated roll to rotate to simulate the real working scenario while clamping the corrugated roll to be tested for steam testing. This makes the test results more accurate and is beneficial for solving the problems found in the test during subsequent fine grinding of the corrugated roll, thereby improving the service life, working efficiency, and product quality of the corrugated roll.
[0040] In this embodiment, a guide rail 111 is provided on the base 11. The first bracket 12 and the second bracket 13 are detachably installed on the guide rail 111, and the distance between them can be adjusted along the guide rail 111. There are two guide rails 111, which are arranged parallel to each other on both sides of the width of the base 11. The bottoms of the first bracket 12 and the second bracket 13 are connected to the two guide rails 111 to increase installation stability. The guide rails 111 allow the distance between the first bracket 12 and the second bracket 13 to be adjustable, which can meet the requirements for steam testing of corrugated rolls of different lengths and improve the applicability of the testing fixture 1. The base 11 is fixed to the workshop floor by multiple bolts, making the entire fixture more stable and improving the safety and stability of steam testing.
[0041] Please see Figures 2 to 3 As shown, a rotating shaft 141 for mounting the first rotating wheel 121 is rotatably mounted on the first bracket 12. The second rotating wheel 122, the third rotating wheel 131, and the fourth rotating wheel 132 are rotatably mounted on the first bracket 12 and the second bracket 13 respectively via the first mounting shaft 123. In this embodiment, the rotating shaft 141 is rotatably mounted on the first bracket 12 via a bearing. The first rotating wheel 121 is fixedly connected to the rotating shaft 141, so that when the driving assembly 14 drives the rotating shaft 141 to rotate, it can drive the first rotating wheel 121 to rotate, thereby causing the corrugated roller to be tested to rotate and simulate the working scenario. The second rotating wheel 122, the third rotating wheel 131, and the fourth rotating wheel 132 are each connected to a first mounting shaft 123, that is, there are three first mounting shafts 123 in total. The three first mounting shafts 123 are fixedly mounted on the first bracket 12 and the second bracket 13 respectively. The second rotating wheel 122, the third rotating wheel 131, and the fourth rotating wheel 132 are rotatably mounted on the first mounting shaft 123 via bearings.
[0042] Please see Figure 2 As shown, the drive assembly 14 includes a motor 142, a drive gear 143, a transmission chain 144, and a driven gear 145. The motor 142 is fixedly mounted on the side of the first bracket 12 away from the second bracket 13 via a mounting bracket 146. The motor 142 drives the drive gear 143, which in turn drives the driven gear 145 via the transmission chain 144. The driven gear 145 is fixedly connected to the rotating shaft 141. In this embodiment, the mounting bracket 146 is fixedly mounted on the first bracket 12 with screws, and the drive gear 143 and the driven gear 145 are synchronous gears. When the motor 142 drives the drive gear 143 to rotate, the drive gear 143 drives the driven gear 145 to rotate synchronously via the transmission chain 144. The driven gear 145 drives the rotating shaft 141 to rotate, thereby driving the first rotating wheel 121 to rotate. This causes the corrugated roller to be tested, which is carried on the first rotating wheel 121, to rotate, simulating the working environment of the corrugated roller and making the test results more accurate.
[0043] Please see Figures 1 to 3 As shown, a first limiting wheel 124 is rotatably mounted on the first support 12, and a second limiting wheel 133 is rotatably mounted on the second support 13. The first limiting wheel 124 and the second limiting wheel 133 are arranged diagonally. In this embodiment, the axis of the first limiting wheel 124 is parallel to the axis of the second limiting wheel 133 and perpendicular to the axis of the first wheel 121. The first limiting wheel 124 and the second limiting wheel 133 are used to abut against the shoulder end faces at both ends of the corrugated roller to be tested, preventing the corrugated roller from shifting during rotation. While the corrugated roller rotates, the first limiting wheel 124 and the second limiting wheel 133 also rotate, preventing mutual wear. The diagonal arrangement of the first limiting wheel 124 and the second limiting wheel 133 ensures that the corrugated roller is subjected to uniform force and has a better limiting effect. Because the diameter of the mounting part of the corrugated roller is smaller than the diameter of its working part, the height of the first limiting roller 124 and the second limiting roller 133 is greater than the height of the first roller 121.
[0044] Please see Figure 2 As shown, a first connecting plate 125 is fixedly connected to one side of the first bracket 12, and a first crossbeam 126 is fixedly connected to the first connecting plate 125. A second mounting shaft 127 is provided on the first crossbeam 126, and a first limiting wheel 124 is rotatably mounted on the second mounting shaft 127. In this embodiment, the first connecting plate 125 is fixedly mounted on the first bracket 12 by bolts, and the first crossbeam 126 is also fixedly mounted on the top of the first connecting plate 125 by bolts. The second mounting shaft 127 is fixedly mounted on the end of the first crossbeam 126 near the second bracket 13. The first limiting wheel 124 is rotatably mounted on the second mounting shaft 127 via a bearing. The distance from the first limiting wheel 124 to the second bracket 13 is less than the distance from the first wheel 121 to the second bracket 13, so that the first limiting wheel 124 can abut against the shoulder end face of the corrugated roller to achieve limiting.
[0045] Please see Figure 3 As shown, a second connecting plate 134 is provided on one side of the second bracket 13, a second crossbeam 135 is fixedly provided on the second connecting plate 134, a third mounting shaft 136 is provided on the second crossbeam 135, and a second limiting wheel 133 is rotatably mounted on the third mounting shaft 136. In this embodiment, the second connecting plate 134 is fixedly mounted on the second bracket 13 by bolts, the second crossbeam 135 is also fixedly mounted on the top of the second connecting plate 134 by bolts, the third mounting shaft 136 is fixedly mounted on the end of the second crossbeam 135 near the first bracket 12, and the second limiting wheel 133 is rotatably mounted on the third mounting shaft 136 via a bearing. The distance from the second limiting wheel 133 to the first bracket 12 is less than the distance from the third wheel 131 to the first bracket 12, so that the second limiting wheel 133 can abut against the shoulder end face of the corrugated roller to achieve limiting.
[0046] Please see Figure 1 As shown, the test fixture 1 also includes a steam connection frame 15, which is located at one end of the base 11 and on the side of the second support 13 away from the first support 12. The corrugated roller needs to be connected to the external steam equipment 3 via a suitable connecting component. The steam connection frame 15 is used to install and support the connecting component, preventing the connecting component from rotating with the corrugated roller or separating from it, thus avoiding steam burns to the measuring worker. In this embodiment, the steam connection frame 15 is bolted to the guide rail 111 and its position can be adjusted along the guide rail 111 to ensure smooth connection between the corrugated roller to be tested, which is supported on the first support 12 and the second support 13, and the external steam equipment 3.
[0047] Please see Figure 3 As shown, a locking member 151 is provided on the steam connection frame 15, which is used to lock the steam connection assembly 2. In this embodiment, the locking member 151 is connected to the steam connection frame 15 by bolts and locked by bolts. The connecting assembly adapted to the corrugated roller is clamped in the locking member 151 and the steam connection frame 15 and locked by bolts. The steam connection frame 15 supports the connecting assembly to the same height as the corrugated roller to be tested. The locking member 151 fixes the connecting assembly to prevent it from being affected by the rotating corrugated roller to be tested and detaching from the corrugated roller.
[0048] Please see Figure 3 As shown, the steam connection assembly 2 has connecting ribs 21 on both sides, and the connecting ribs 21 are clamped between the locking member 151 and the steam connection frame 15. In this embodiment, the steam connection assembly 2 is mounted on the steam connection frame 15 via the two connecting ribs 21. The locking member 151 is fixedly connected to the steam connection frame 15 by bolts to lock the connecting ribs 21, thereby preventing the steam connection assembly 2 from loosening and causing it to detach from the steam equipment 3 when the corrugated roller rotates, which could lead to production accidents such as steam burns.
[0049] Please see Figure 1As shown, the steam equipment 3 includes a main body 31, a steam pipe 32, and a return water pipe 33. The main body 31 is connected to the steam connection assembly 2 via the steam pipe 32 to input steam into the corrugated roll to be tested. The main body 31 is also connected to the steam connection assembly 2 via the return water pipe 33 to return the condensate in the corrugated roll to the main body 31. The steam connection assembly 2 has a steam flow area and a condensate flow area, which are not interconnected. The steam pipe 32 is connected to the corrugated roll through the steam flow area, and the return water pipe 33 is connected to the corrugated roll through the condensate flow area. In the actual working environment, the steam introduced into the corrugated roll is transferred to the paper in contact with the surface of the corrugated roll through heat transfer, thereby forming condensate inside the roll. It is necessary to drain the condensate and continuously introduce steam to ensure normal production operation. The main body 31 and the corrugated roll are connected by the steam pipe 32 and the return water pipe 32 to form a heat transfer medium loop, ensuring that the corrugated roll testing process is in a simulated working environment while recovering the condensate to regenerate steam, thus saving resources.
[0050] 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 steam testing device for corrugated roll production, characterized in that, It includes a test fixture (1), a steam connection assembly (2) and a steam device (3). The test fixture (1) is used to clamp the corrugated roll to be tested. The steam connection assembly (2) is connected to the steam device (3) and the corrugated roll to be tested respectively. The steam device (3) is used to input steam into the corrugated roll to be tested. The testing fixture (1) includes a base (11), with a first bracket (12) and a second bracket (13) respectively provided at both ends of the base (11). A drive assembly (14) is provided on the first bracket (12), and the drive assembly (14) drives and connects to a first rotating wheel (121). A second rotating wheel (122) is also rotatably provided on the first bracket (12), and a third rotating wheel (131) and a fourth rotating wheel (132) are rotatably provided on the second bracket (13). The axis of the first rotating wheel (121) is parallel to the axis of the second rotating wheel (122), and the axis of the third rotating wheel (131) is parallel to the axis of the fourth rotating wheel (132). The first rotating wheel (121) and the second rotating wheel (122) are used to support one end of the corrugated roller to be tested, and the third rotating wheel (131) and the fourth rotating wheel (132) are used to support the other end of the corrugated roller to be tested. The corrugated roller to be tested can rotate relative to the steam connection assembly (2).
2. The steam testing device for corrugated roll production according to claim 1, characterized in that, The first bracket (12) is rotatably provided with a rotating shaft (141) for mounting the first rotating wheel (121). The second rotating wheel (122), the third rotating wheel (131) and the fourth rotating wheel (132) are respectively rotatably mounted on the first bracket (12) and the second bracket (13) via the first mounting shaft (123).
3. The steam testing device for corrugated roll production according to claim 2, characterized in that, The drive assembly (14) includes a motor (142), a drive gear (143), a transmission chain (144), and a driven gear (145). The motor (142) is fixedly mounted on the side of the first bracket (12) away from the second bracket (13) via a mounting bracket (146). The motor (142) drives the drive gear (143), and the drive gear (143) drives the driven gear (145) via the transmission chain (144). The driven gear (145) is fixedly connected to the rotating shaft (141).
4. The steam testing device for corrugated roll production according to claim 1, characterized in that, The first bracket (12) is rotatably equipped with a first limiting wheel (124), and the second bracket (13) is rotatably equipped with a second limiting wheel (133). The first limiting wheel (124) and the second limiting wheel (133) are diagonally arranged.
5. The steam testing device for corrugated roll production according to claim 4, characterized in that, A first connecting plate (125) is fixedly connected to one side of the first bracket (12), a first crossbeam (126) is fixedly connected to the first connecting plate (125), a second mounting shaft (127) is provided on the first crossbeam (126), and a first limiting wheel (124) is rotatably mounted on the second mounting shaft (127).
6. The steam testing device for corrugated roll production according to claim 4, characterized in that, A second connecting plate (134) is provided on one side of the second bracket (13), a second crossbeam (135) is fixedly provided on the second connecting plate (134), a third mounting shaft (136) is provided on the second crossbeam (135), and a second limiting wheel (133) is rotatably mounted on the third mounting shaft (136).
7. The steam testing device for corrugated roll production according to claim 1, characterized in that, The test fixture (1) also includes a steam connection frame (15), which is located at one end of the base (11) and on the side of the second support (13) away from the first support (12).
8. The steam testing device for corrugated roll production according to claim 7, characterized in that, A locking element (151) is provided on the steam connection bracket (15) for locking the steam connection assembly (2).
9. The steam testing device for corrugated roll production according to claim 8, characterized in that, The steam connection assembly (2) has connecting ribs (21) on both sides, and the connecting ribs (21) are clamped between the locking member (151) and the steam connection frame (15).
10. The steam testing device for corrugated roll production according to claim 1, characterized in that, The steam equipment (3) includes a main body (31), a steam pipe (32) and a return water pipe (33). The main body (31) is connected to the steam connection assembly (2) via the steam pipe (32) to input steam into the corrugated roller to be tested. The main body (31) is connected to the steam connection assembly (2) via the return water pipe (33) to return the condensate in the corrugated roller to be tested back to the main body (31).