Steam heated single facer

Abstract

The application relates to a steam heating type single-face corrugating machine, relates to corrugated paper processing, and comprises a machine body, a corrugating roller, a connecting pipe arranged on the corrugating roller, a mounting plate arranged on the machine body, the connecting pipe being connected with the mounting plate, a lifting plate being slidably lifted on the machine body, the lifting plate being slidably close to or away from the mounting plate, a steam pipe being arranged on the machine body, a plurality of shunt pipes being arranged on the steam pipe, the shunt pipes being connected with the lifting plate, the shunt pipes being correspondingly arranged with the connecting pipes, the connecting pipes being used for being inserted into the corresponding shunt pipes, a driving element being arranged on the mounting plate, and the driving element driving the lifting plate to lift. The driving element drives the lifting plate to lift, so that the connecting pipes on the mounting plate are all separated from the shunt pipes, the connection between the steam pipe and the corrugating roller can be disconnected, the steam pipe does not need to be dismounted from the corrugating roller one by one, and the dismounting efficiency of the steam pipe is improved.

Description

Technical Field

[0001] This application relates to the field of corrugated paper processing, and in particular to a steam-heated single-face corrugating machine. Background Technology

[0002] Corrugated paper is a sheet-like material made by bonding corrugated base paper and corrugated paper. Corrugated paper is processed by a corrugating machine. The corrugated rollers are very important components of the corrugating machine. The corrugated base paper is formed into corrugated paper by being pressed by a pair of upper and lower corrugated rollers. There are five types of corrugated paper: A, B, C, E, and F. In order to make the corrugated paper easier to form, the corrugated rollers need to be heated. In related technologies, some corrugated rollers are connected to steam pipes to heat the corrugated rollers with steam.

[0003] During the use of a corrugating machine, in order to extend the overall service life of the machine, regular maintenance and repair of the corrugating rollers are necessary. Before maintenance and repair, the steam pipes need to be removed from the corrugating rollers to prevent steam from entering during the process. However, removing the steam pipes requires detaching them one by one from the corrugating rollers, which is inefficient and needs improvement. Summary of the Invention

[0004] To improve the efficiency of steam pipe disassembly, this application provides a steam-heated single-sided corrugating machine.

[0005] This application provides a steam-heated single-sided corrugated machine with the following technical solution:

[0006] A steam-heated single-face corrugating machine includes a machine body, several corrugating rollers rotatably connected to the machine body, connecting pipes on the corrugating rollers, a mounting plate on the machine body, the connecting pipes connected to the mounting plate, a lifting plate that slides up and down on the machine body, the lifting plate sliding closer to or away from the mounting plate, a steam pipe on the machine body, several branch pipes on the steam pipe, the branch pipes connected to the lifting plate, the branch pipes corresponding to the connecting pipes, the connecting pipes being inserted into the corresponding branch pipes, and a driving component on the mounting plate that drives the lifting plate to move up and down.

[0007] By adopting the above technical solution, in actual use, the driving component drives the lifting plate to descend, causing the connecting pipe to be inserted into the corresponding branch pipe, thus connecting the steam pipe with the connecting pipe. Steam then enters the corrugated roller from the steam pipe along the branch pipe and the connecting pipe, causing the temperature of the corrugated roller to rise. When maintenance or repair of the corrugated roller is required, the driving component drives the lifting plate to rise, causing all the connecting pipes on the mounting plate to detach from the branch pipe, thereby disconnecting the connection between the steam pipe and the corrugated roller. This eliminates the need to remove the steam pipes from the corrugated roller one by one, which helps to improve the disassembly efficiency of the steam pipe.

[0008] Preferably, the steam pipe includes a buffer tank disposed on the machine body and a main pipe disposed on the buffer tank. The branch pipe is connected to the buffer tank. When steam enters the buffer tank from the main pipe, the steam is evenly distributed in the buffer tank.

[0009] By adopting the above technical solution, when steam enters the buffer tank from the main pipe, the steam diffuses in the buffer tank, making the steam entering each branch pipe uniform and the steam entering the corrugated roll uniform, thereby making each corrugated roll heated uniformly, and thus making the corrugated paper heated uniformly during processing. This helps to reduce the situation of corrugated paper not forming properly after processing and helps to improve the quality of the processed corrugated paper.

[0010] Preferably, the diversion pipe is connected to the upper end of the buffer tank.

[0011] By adopting the above technical solution, compared with setting the distribution pipe at the lower end of the buffer tank, when steam enters the buffer tank from the main pipe, the steam will not directly enter the distribution pipe closest to the main pipe under the action of gravity. When the steam in the buffer tank is close to saturation, the steam enters the distribution pipe evenly, which is beneficial to maintain the uniformity of steam in each distribution pipe.

[0012] Preferably, the connecting pipe is provided with a sealing element, which is used to press against the corresponding diverter pipe.

[0013] By adopting the above technical solution, the sealing element is used to press against the branch pipe, making it difficult for steam to flow out from the gap between the connecting pipe and the branch pipe, which helps to improve the sealing performance between the connecting pipe and the branch pipe.

[0014] Preferably, the diverter pipe has a recessed groove for the connecting pipe to be inserted into, the sealing element is used to press against the inner wall of the recessed groove, the connecting pipe has a thermal expansion and contraction component, the diverter pipe has a connecting pipe, the connecting pipe has a slot, the slot communicates with the recessed groove, and the slot is for the thermal expansion and contraction component to be inserted into.

[0015] By adopting the above technical solution, in actual use, when steam passes through the connecting pipe and the branch pipe, the temperature of the connecting pipe and the branch pipe rises, and the thermal expansion and contraction component expands and gets stuck in the slot, so that the connecting pipe and the branch pipe cannot be disconnected when steam passes through them, which helps to reduce the chance of workers being burned.

[0016] Preferably, the thermal expansion and contraction assembly includes a thermal expansion and contraction block and a slider disposed on the thermal expansion and contraction block, and the slot is used for the slider to be engaged.

[0017] By adopting the above technical solution, the slider is moved by the expansion of the thermal expansion and contraction block, so that the slider can be inserted into the slot. This helps to reduce the situation where the end of the thermal expansion and contraction component near the slot expands to be larger than the size of the slot and thus cannot be inserted into the slot.

[0018] Preferably, a warning disc is rotatably connected to the connecting pipe, and a drive rod is movably connected to the slider. The drive rod is movably connected to the warning disc, and the connection point between the drive rod and the warning disc is offset from the axis of the warning disc.

[0019] By adopting the above technical solution, when the thermal expansion and contraction block expands due to heat, pushing the slider to move closer to the slot, the distance between the slider and the warning disc gradually decreases, causing the end of the drive rod connected to the warning disc to move away from the slider, thereby driving the warning disc to rotate; when no steam passes through the connecting pipe, the temperature drops, the thermal expansion and contraction block contracts, causing the slider to move away from the warning disc, causing the warning disc to rotate in the opposite direction. By observing the rotation direction of the warning disc, it is easy to judge the steam flow situation in the connecting pipe.

[0020] Preferably, the connecting plate is provided with a warning line, and the warning disc is provided with a warning arrow one and a warning arrow two. When the slider is inserted into the slot, the warning arrow one points to the warning line, and when the slider is disengaged from the slot, the warning arrow two points to the warning line.

[0021] By adopting the above technical solution, in actual use, when steam passes through the connecting pipe, the temperature of the connecting pipe rises, the thermal expansion and contraction block expands, causing the slider to be inserted into the slot, and the drive rod drives the warning disc to rotate, so that the first warning arrow points to the warning line; after all the steam has passed through the connecting pipe, the temperature inside the connecting pipe gradually decreases, the thermal expansion and contraction block contracts, causing the slider to move out of the slot, and the drive rod drives the warning disc to rotate, so that the second warning arrow points to the warning line, making it more intuitive and convenient to observe the steam flow in the pipe.

[0022] Preferably, the slider is provided with a pressing surface, the lower end face is located on the side of the slider away from the lifting plate, the pressing surface is inclined, the pressing surface is inclined towards the lifting plate in the direction of approaching the slot, and the pressing surface is used to abut against the inner wall of the slot.

[0023] By adopting the above technical solution, if the connecting pipe is not fully inserted into the distribution pipe when connecting the connecting pipe and the distribution pipe, the steam passes through the connecting pipe and causes the thermal expansion block to expand and push the fixed slider into the slot. When the mating surface comes into contact with the inner wall of the slot, the slider continues to move, causing the distribution pipe to move away from the lifting plate. This helps the connecting pipe to be fully inserted into the distribution pipe, thereby improving the sealing between the connecting pipe and the distribution pipe.

[0024] Preferably, the mounting plate is provided with a plurality of guide posts, and the plurality of guide posts pass through the lifting plate.

[0025] By adopting the above technical solution, the lifting plate is guided by the guide column during the lifting process, which makes it easier to keep the opening of the connecting pipe and the opening of the diversion pipe in the same straight line, so that when the connecting pipe and the diversion pipe are connected, the connecting pipe can be accurately inserted into the corresponding diversion pipe.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The driving component drives the lifting plate to rise, causing all the connecting pipes on the mounting plate to detach from the diversion pipe, thus disconnecting the connection between the steam pipe and the corrugated roller. This eliminates the need to remove the steam pipes from the corrugated roller one by one, which helps improve the disassembly efficiency of the steam pipes.

[0028] 2. By setting up a buffer tank, the steam entering each distribution pipe is made uniform, and the steam entering the corrugated roll is made uniform, so that each corrugated roll is heated evenly, and the corrugated paper is heated evenly during processing. This helps to reduce the occurrence of corrugation defects after processing and improves the quality of the corrugated paper.

[0029] 3. When steam passes through the connecting pipe and the branch pipe, the thermal expansion and contraction component expands and locks into the slot, so that the connecting pipe and the branch pipe cannot be disconnected when the steam passes through them, which helps to reduce the chance of workers being burned. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this embodiment.

[0031] Figure 2 This is a schematic diagram of the overall structure from another perspective of this implementation, mainly showing the structure of the steam pipe.

[0032] Figure 3 This is a partial cross-sectional view of the connecting pipe, the shunt pipe, and the seal in this embodiment, mainly showing the connection structure between the connecting pipe and the shunt pipe.

[0033] Figure 4 for Figure 2 Enlarged view of part A in the middle.

[0034] Explanation of reference numerals in the attached drawings: 1. Machine body; 11. Mounting plate; 111. Guide column; 12. Lifting plate; 121. Fixing hole; 2. Corrugated roller; 21. Processing channel; 3. Steam pipe; 31. Buffer tank; 32. Main pipe; 4. Diversion pipe; 41. Settling tank; 42. Slot; 5. Connecting pipe; 51. Seal; 52. Mounting slot; 53. Warning line; 6. Drive component; 7. Thermal expansion and contraction assembly; 71. Thermal expansion and contraction block; 72. Slider; 721. Pressing surface; 722. Movable slot one; 8. Warning disc; 81. Warning arrow one; 82. Warning arrow two; 83. Movable slot two; 9. Drive rod; 91. Rod body; 92. Steel ball one; 93. Steel ball two. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] This application discloses a steam-heated single-sided corrugated machine. (Refer to...) Figure 1 A steam-heated single-face corrugating machine includes a machine body 1 and several corrugating rollers 2. The corrugating rollers 2 are rotatably connected to the machine body 1. A processing channel 21 is left between adjacent corrugating rollers 2 for corrugated paper to pass through.

[0037] Reference Figure 1 and Figure 2 A steam pipe 3 is fixed on the machine body 1. The steam pipe 3 includes a buffer tank 31 and a main pipe 32. The buffer tank 31 is cylindrical and located above the corrugated roller 2. The buffer tank 31 is fixedly connected to the machine body 1. The main pipe 32 is fixed on the buffer tank 31. The diameter of the main pipe 32 is smaller than the diameter of the buffer tank 31. Steam enters the buffer tank 31 through the main pipe 32 and is evenly distributed inside the buffer tank 31. Several branch pipes 4 are fixed on the buffer tank 31. The distribution direction of the branch pipes 4 is parallel to the axis of the buffer tank 31. The branch pipes 4 are evenly distributed on the buffer tank 31 at equal intervals. The end of the branch pipe 4 closest to the buffer tank 31 is located above the buffer tank 31 and is fixedly connected to the buffer tank 31. The branch pipe 4 communicates with the inside of the buffer tank 31.

[0038] Reference Figure 1 A mounting plate 11 is fixed on the machine body 1. The mounting plate 11 is located above the corrugated roller 2 and below the buffer tank 31. The mounting plate 11 and the corrugated roller 2 are not in the same vertical direction. Several connecting pipes 5 are fixed on the mounting plate 11. The position and number of connecting pipes 5 correspond one-to-one with the position and number of diversion pipes 4. The opposite ends of the connecting pipes 5 are used to connect the diversion pipes 4 and the corrugated roller 2, respectively. Each corrugated roller 2 is connected to two connecting pipes 5. The two connecting pipes 5 connected to the same corrugated roller 2 are responsible for the steam entering and exiting the corrugated roller 2, respectively. The mounting plate 11 is fixedly connected to the pipe body of the connecting pipe 5. The end of the connecting pipe 5 away from the corrugated roller 2 is located above the mounting plate 11.

[0039] In actual use, steam enters the buffer tank 31 from the main pipe 32 and is evenly distributed in the buffer tank 31. It is then passed into the connecting roller through the diversion pipe 4 and the connecting pipe 5 to heat the connecting roller, and in turn heats the corrugated roller 2 that has passed through the processing channel 21.

[0040] Reference Figure 1 A lifting plate 12 is mounted on the body 1, sliding vertically. The lifting plate 12 is located directly above the mounting plate 11. A driving component 6 is fixed to the upper end of the mounting plate 11, and its housing is fixedly connected to the mounting plate 11. The output shaft of the mounting plate 11 is fixedly connected to the lifting plate 12. The driving component 6 drives the lifting plate 12 to move closer to or away from the mounting plate 11. The lifting plate 12 has several fixing holes 121. The position and number of fixing holes 121 correspond one-to-one with the position and number of diverter pipes 4 and the position and number of connecting pipes 5. The vertical projection of the fixing holes 121 is located on the connecting pipes 5. The end of the diverter pipe 4 furthest from the buffer tank 31 passes through a corresponding fixing hole 121. The pipe body of the diverter pipe 4 is fixedly connected to the lifting plate 12. The port of the diverter pipe 4 furthest from the buffer tank 31 is located below the lifting plate 12. The lifting plate 12's movement causes the diverter pipe 4 to move closer to or away from the corresponding connecting pipe 5. In this embodiment, the driving component 6 is a cylinder.

[0041] Reference Figure 1 and Figure 3 A groove 41 is provided at one end of the diversion pipe 4 near the connecting pipe 5. The groove 41 is for the corresponding connecting pipe 5 to be inserted. Several guide posts 111 are fixed on the mounting plate 11. The guide posts 111 are arranged at equal intervals around the outer periphery of the driving component 6. The guide posts 111 pass through the lifting plate 12 and fit against the lifting plate 12. The lifting plate 12 is slidably connected to the guide posts 111.

[0042] However, when the corrugated roll 2 needs maintenance and repair, the drive unit 6 drives the lifting plate 12 to extend upward. The lifting plate 12 drives several diversion pipes 4 to move upward and disengage from the corresponding connecting pipes 5, so that the connecting pipes 5 and the diversion pipes 4 are disconnected. Steam cannot enter the corrugated roll 2 from the connecting pipes 5, which improves the safety of the corrugated roll 2 during maintenance and repair.

[0043] After the maintenance and repair of the corrugated roller 2 is completed, the piston rod of the drive component 6 retracts, causing the lifting plate 12 to move closer to the mounting plate 11, which in turn drives the diversion pipe 4 to move closer to the corresponding connecting pipe 5. Under the action of the guide column 111, the movement of the diversion pipe 4 is not easily deviated, making it easier for the connecting pipe 5 to be inserted into the sink 41.

[0044] Reference Figure 3A sealing element 51 is fixed to one end of the connecting pipe 5 near the mounting plate 11. The sealing element 51 is used to press against the inner wall of the settling groove 41, reducing the gap between the connecting pipe 5 and the diversion pipe 4 after the connecting pipe 5 is inserted into the diversion pipe 4, thereby increasing and improving the sealing effect between the connecting pipe 5 and the diversion pipe 4. In this embodiment, the sealing element 51 is a silicone rubber sealing ring.

[0045] Reference Figure 3 An installation groove 52 is provided on the outer wall of the connecting pipe 5. When the connecting pipe 5 is inserted into the sink 41, the installation groove 52 is connected to the sink 41. The installation groove 52 is located on the side of the sealing element 51 away from the lifting plate 12. A slot 42 is provided on the diversion pipe 4. The slot 42 is connected to the sink 41. When the connecting pipe 5 is inserted into the sink 41, the installation groove 52 is connected to the slot 42.

[0046] Reference Figure 3 A thermal expansion and contraction assembly 7 is fixed to the connecting pipe 5. The thermal expansion and contraction assembly 7 includes a thermal expansion and contraction block 71 and a slider 72. Both the thermal expansion and contraction block 71 and the slider 72 are located within the mounting groove 52. The thermal expansion and contraction block 71 is fixedly connected to the connecting pipe 5. The distribution direction of the thermal expansion and contraction block 71 and the slider 72 is the same as the extension direction of the mounting groove 52. The thermal expansion and contraction block 71 is located on the side of the slider 72 near the inner wall of the bottom of the mounting groove 52. The slider 72 is fixedly connected to the thermal expansion and contraction block 71 and slides within the mounting groove 52. When the thermal expansion and contraction block 71 expands, it causes the slider 72 to move out of the mounting groove 52. When the thermal expansion and contraction block 71 contracts, it causes the slider 72 to move back into the mounting groove 52. In this embodiment, the material of the thermal expansion and contraction block 71 is iron, and the material of the slider 72 is tungsten.

[0047] Reference Figure 1 and Figure 3 A pressing surface 721 is formed on the slider 72. The pressing surface 721 is located at the end of the slider 72 away from the lifting plate 12 and at the end of the slider 72 away from the thermal expansion and contraction block 71. The pressing surface 721 is inclined and tilted towards the lifting plate 12 in the direction away from the thermal expansion and contraction block 71. The slot 42 is used for the slider 72 to be inserted. The pressing surface 721 is used to abut against the lower inner wall of the slot 42, so that the diverter pipe 4 moves downward, which helps to increase the sealing between the connecting pipe 5 and the diverter pipe 4.

[0048] Reference Figure 4 A warning disc 8 is rotatably connected to the connecting pipe 5. The rotation axis of the warning disc 8 is parallel to the extension direction of the mounting groove 52. The warning disc 8 is located on the side of the mounting groove 52 away from the lifting plate 12. A warning line 53 is formed on the outer wall of the connecting pipe 5. A warning arrow 1 81 and a warning arrow 2 82 are formed on the side of the warning disc 8 away from the connecting pipe 5. The warning arrow 1 81 and the warning arrow 2 82 are spaced apart, and the direction of the warning arrow 1 81 and the warning arrow 2 82 is parallel to the radial direction of the warning disc 8.

[0049] Reference Figure 3 A drive rod 9 is movably connected to the slider 72. The drive rod 9 includes a rod body 91, a first steel ball 92, and a second steel ball 93. The first steel ball 92 and the second steel ball 93 are located at opposite ends of the rod body 91 and are fixedly connected to the rod body 91. A movable groove 722 is provided at the end of the slider 72 near the warning disc 8, into which the first steel ball 92 is inserted. The first steel ball 92 fits into the movable groove 722. The rod body 91 is movably connected to the slider 72 through the cooperation between the first steel ball 92 and the slider 72. A movable groove 83 is provided at the end of the warning disc 8 near the slider 72, into which the second steel ball 93 is inserted. The movable groove 83 is offset from the axis of the warning disc 8. The rod body 91 is movably connected to the warning disc 8 through the first steel ball 92. The length of the rod body 91 is greater than the maximum distance between the slider 72 and the warning disc 8. The connecting pipe 5 is provided with a clearance groove to prevent the rod body 91 from colliding with the connecting pipe 5 during movement.

[0050] When maintenance or repair of the corrugated roller 2 is required, first close the main pipe 32, and then wait for all the remaining steam to pass through the branch pipe 4 and the connecting pipe 5. The temperature at the opening of the connecting pipe 5 gradually decreases, causing the thermal expansion and contraction block 71 to contract and drive the slider 72 to move away from the slot 42 and into the mounting slot 52. The distance between the movable slot 1 722 and the warning disc 8 increases. Through the cooperation between the rod body 91, the steel ball 2 93 and the movable slot 2 83, the warning disc 8 rotates, causing the movable slot 2 83 to move closer to the mounting slot 52. At this time, the warning arrow 2 82 points to the warning line 53. Similarly, when steam passes through the connecting pipe 5 and the branch pipe 4, the temperature at the connecting pipe 5 is higher. The thermal expansion and contraction block 71 expands, causing the slider 72 to be inserted into the slot 42. The distance between the movable slot 1 722 and the warning disc 8 decreases. Through the cooperation between the rod body 91, the steel ball 2 93 and the movable slot 2 83, the warning disc 8 rotates, causing the movable slot 2 83 to move away from the mounting slot 52. At this time, the warning arrow 1 81 points to the warning line 53. This allows staff to have a more intuitive understanding of the steam flow in the diversion pipe 4 and the connecting pipe 5.

[0051] The implementation principle of a steam-heated single-sided corrugated machine according to an embodiment of this application is as follows: When maintenance or repair of the corrugated roller 2 is required, the main pipe 32 is closed, and after the warning arrow 82 on the warning disc 8 points to the warning line 53, the drive unit 6 is opened. The piston rod of the drive unit 6 extends, causing the lifting plate 12 to move away from the mounting plate 11, thus disconnecting the branch pipe 4 on the lifting plate 12 from the connecting pipe 5 on the mounting plate 11, making it convenient to disassemble the branch pipe 4. After maintenance or repair is completed, the piston rod of the drive unit 6 retracts, causing the connecting pipe 5 to be reinserted into the corresponding branch pipe 4. The main pipe 32 is then opened, allowing steam to enter the corrugated tube along the branch pipe 4 and the connecting pipe 5, making it convenient to install the branch pipe 4. This improves the efficiency of disassembling and assembling the steam pipe 3.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A steam heated single facer, comprising a machine body (1), a plurality of corrugating rolls (2) rotatably connected to the machine body (1), characterized in that: The corrugated roller (2) is provided with a connecting pipe (5), the machine body (1) is provided with a mounting plate (11), the connecting pipe (5) is connected with the mounting plate (11), the machine body (1) is provided with a lifting plate (12) which can slide up and down, the lifting plate (12) slides close to or away from the mounting plate (11), the machine body (1) is provided with a steam pipe (3), the steam pipe (3) is provided with a plurality of branch pipes (4), the branch pipes (4) are connected with the lifting plate (12), the branch pipes (4) are correspondingly arranged with the connecting pipe (5), the connecting pipe (5) is used for inserting into the corresponding branch pipe (4), the mounting plate (11) is provided with a driving element (6), and the driving element (6) drives the lifting plate (12) to lift up and down. The connecting pipe (5) is provided with a sealing element (51), and the sealing element (51) is used for abutting against the corresponding branch pipe (4). The branch pipe (4) is provided with a sink groove (41), the sink groove (41) is used for clamping the connecting pipe (5), the sealing element (51) is used for abutting against the inner wall of the sink groove (41), the connecting pipe (5) is provided with a thermal expansion and contraction assembly (7), the branch pipe (4) is provided with a connecting pipe (5), the connecting pipe (5) is provided with a clamping groove (42), the clamping groove (42) is communicated with the sink groove (41), and the clamping groove (42) is used for clamping the thermal expansion and contraction assembly (7). The thermal expansion and contraction assembly (7) comprises a thermal expansion and contraction block (71) and a sliding block (72) arranged on the thermal expansion and contraction block (71), and the clamping groove (42) is used for clamping the sliding block (72). The connecting pipe (5) is rotatably connected with a warning disc (8), the sliding block (72) is movably connected with a driving rod (9), the driving rod (9) is movably connected with the warning disc (8), and the connection position of the driving rod (9) and the warning disc (8) deviates from the axis of the warning disc (8).

2. A steam heated single facer according to claim 1, characterized in that: The steam pipe (3) comprises a buffer tank (31) arranged on the machine body (1) and a main pipe (32) arranged on the buffer tank (31), the branch pipe (4) is communicated with the buffer tank (31), and when steam enters the buffer tank (31) from the main pipe (32), the steam is uniformly distributed in the buffer tank (31).

3. A steam heated single facer according to claim 2, characterised in that: The branch pipe (4) is connected with the upper end of the buffer tank (31).

4. A steam heated single facer according to claim 1 wherein: The connecting plate is provided with a warning line (53), the warning disc (8) is provided with a warning arrow one (81) and a warning arrow two (82), when the sliding block (72) is clamped into the clamping groove (42), the warning arrow one (81) points to the warning line (53), and when the sliding block (72) is separated from the clamping groove (42), the warning arrow two (82) points to the warning line (53).

5. A steam heated single facer according to claim 1 wherein: The sliding block (72) is provided with an abutting surface (721), which is located on the side of the sliding block (72) away from the lifting plate (12), is arranged in an inclined manner, and is inclined towards the lifting plate (12) in a direction close to the clamping groove (42) and is used for abutting against the inner wall of the clamping groove (42).

6. A steam heated single facer according to claim 1 wherein: The mounting plate (11) is provided with a plurality of guide columns (111), and the guide columns (111) penetrate the lifting plate (12).

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