Baking cylinder structure for preventing sticking by spraying mineral oil

Abstract

The utility model discloses a kind of drying cylinder anti-sticking cylinder structures of spraying mineral oil, including rack and drying cylinder barrel, the surface of drying cylinder barrel is sprayed with waterproof layer, the drying cylinder barrel is evenly distributed along the length direction of rack and is arranged at the upper portion of rack, the other side of the width direction of back-liquid groove bottom is provided with the step mechanism of driving back-liquid groove and moving along the length direction of rack, the two sides of back-liquid groove length direction extend upwards and form corresponding first baffle and second baffle with the bottom of drying cylinder barrel. With can effectively reduce the adhesion of paper on the surface of drying cylinder, improve the surface quality of paper, reduce the rate of defective products, improve the yield, easy to operate, only need to spray on the surface of drying cylinder after diluting mineral oil in proportion, without complex equipment and process, no pollution to environment, meet the advantages of environmental protection requirements.

Description

Technical Field

[0001] This utility model relates to the field of papermaking technology, and in particular to a structure for an anti-sticking cylinder for spraying mineral oil in a drying cylinder. Background Technology

[0002] In papermaking, the drying cylinder is a key piece of equipment, used to dry wet paper through heat transfer. However, during the drying process, fibers, colloids, and other substances in the paper easily adhere to the surface of the drying cylinder. This not only affects the surface quality of the paper, leading to defects such as spots and holes and reducing the yield, but also increases the frequency of downtime for cleaning the drying cylinder, reducing production efficiency and increasing production costs. Currently, there are various methods to prevent drying cylinder sticking, such as using chemical coatings and improving the surface material of the drying cylinder. However, these methods have problems such as high cost, unstable effectiveness, and certain environmental impacts.

[0003] To address the issue of sticking to the drying cylinder, the prior art includes an invention patent with authorization announcement number "CN110484138B" that discloses a paper drying cylinder release agent and its preparation method. This agent prevents sticking by attaching a coating to the surface of the drying cylinder. However, the production line is relatively long, and there are steel frame partitions on both sides, resulting in poor spraying effect of mineral oil. Utility Model Content

[0004] The purpose of this invention is to provide a structure for an anti-sticking drying cylinder with sprayed mineral oil. By spraying, a waterproof coating is formed on the surface of the drying cylinder to prevent sticking, which has the advantages of being environmentally friendly and convenient.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a drying cylinder anti-sticking structure for spraying mineral oil, comprising a frame and a drying cylinder body, wherein the surface of the drying cylinder body is sprayed with a waterproof layer, the drying cylinder body is disposed on the upper part of the frame and evenly distributed along the length direction of the frame, a return liquid groove is slidably connected to the lower part of the frame, the return liquid groove slides along the length direction of the frame, sliding mechanisms connected to the frame are provided on both sides of the width direction of the return liquid groove, a row of nozzles is provided above the return liquid groove, the row of nozzles is positioned towards the bottom of the drying cylinder, a width sliding mechanism is provided between the row of nozzles and the return liquid groove, the width sliding mechanism controls the row of nozzles to move axially along the drying cylinder body, the width sliding mechanism is disposed on one side of the bottom width direction of the return liquid groove, a stepping mechanism is provided on the other side of the bottom width direction of the return liquid groove to drive the return liquid groove to move along the length direction of the frame, and the two sides of the return liquid groove extend upward to form a first baffle and a second baffle corresponding to the bottom of the drying cylinder body.

[0006] Preferably, the return tank includes an upper receiving cavity, an opening, a bottom plate, and a lower receiving cavity. The upper receiving cavity is located inside the return tank. The opening is located at the top of the upper receiving cavity and communicates with it. The bottom plate is located at the bottom of the upper receiving cavity, and the center of the bottom plate is curved upward. The lower receiving cavity is located at the bottom of the bottom plate and extends through the bottom of the return tank and both sides in the width direction.

[0007] By adopting the above technical solution, the upper cavity plays the role of recycling spraying waste liquid, while the upwardly curved bottom plate is used to accommodate the first stepper motor and the second stepper motor, resulting in a reasonable spatial layout of the transmission structure.

[0008] Preferably, the frame includes a main support, a secondary support, a first lower support rod, a second lower support rod, and a vertical support rod. The drying cylinder is rotatably connected to the secondary support on both sides along its axial direction. The first lower support rod extends along the length of the main support, and the second lower support rod is located above the first lower support rod. The vertical support rod is located between the first and second lower support rods. The top of the vertical support rod is connected to the bottom of the second lower support rod, and the bottom of the vertical support rod is connected to the top of the first lower support rod. The top of the second lower support rod is connected to the bottom of the secondary support, and the top of the secondary support is connected to the main support. The secondary supports are evenly distributed along the length of the main support.

[0009] By adopting the above technical solution, the main support serves as a support, the secondary support serves as a support for the drying cylinder body, and the first lower support rod, the second lower support rod, and the vertical support rod work together to support the secondary support.

[0010] Preferably, the sliding mechanism includes rollers and wheels disposed on both sides of the return tank in the width direction. The wheels are located between the first lower support rod and the second lower support rod. The rollers and wheels are connected by bearings. The top of the wheels abuts against the bottom of the second lower support rod.

[0011] By adopting the above technical solution, the rollers and shafts work together to guide the movement of the return tank and provide support in the height direction.

[0012] Preferably, a guide groove is provided on the inner side of the adjacent first lower support rod, and guide blocks that cooperate with the guide groove are provided on both sides of the width direction of the return fluid groove. The guide groove is set upward, and the guide blocks are set downward in an L-shape and located on both sides of the lower receiving cavity.

[0013] By adopting the above technical solution, the guide groove and the guide block cooperate to restrict the movement of the return liquid groove in the width direction of the frame and guide the return liquid groove to move in the length direction of the frame.

[0014] Preferably, the waterproof layer is formed by spraying mineral oil through a series of nozzles.

[0015] By adopting the above technical solution, paper can be prevented from adhering to the surface of the drying cylinder during drying.

[0016] Preferably, the stepping mechanism includes a rack, a stepping gear, and a first stepping motor. The first stepping motor is disposed on one side of the lower receiving cavity, and the motor shaft of the first stepping motor is connected to the stepping gear. The rack is disposed upward in the guide groove, and the rack extends along the length direction of the guide groove. The rack cooperates with the stepping gear.

[0017] By adopting the above technical solution, the first step electric drive stepper gear moves in the rack, thereby driving the return liquid tank and its upper connecting spray nozzle mechanism to move in the length direction of the frame, and spraying mineral oil onto multiple drying cylinders in the length direction of the frame.

[0018] Preferably, the array of nozzles includes a housing, a spray nozzle, and a liquid inlet. The spray nozzle is located above the housing and faces upwards. The liquid inlet is located on one side of the housing. The lower part of the spray nozzle communicates with the liquid inlet inside the housing. The spray nozzles are evenly distributed along the length of the housing.

[0019] By adopting the above technical solution, the effect of spraying mineral oil is achieved, thereby expanding the spraying area.

[0020] Preferably, the width sliding mechanism includes a base, a guide shaft, a second stepper motor, a screw, a first gear, a speed-matching gear, and a second gear. The second stepper motor is located on the other side of the lower receiving cavity. The first gear is connected to the motor shaft of the second stepper motor. The speed-matching gear is located on the side wall of the return fluid tank and meshes with the first gear and the second gear respectively. The second gear is located at the end of the screw. The base is threadedly connected to the screw. The housing is located on the base. The screw and the guide shaft are arranged to pass through the width direction of the upper receiving cavity. The guide shaft is slidably connected to the base.

[0021] By adopting the above technical solution, the drive assembly of nozzles moves in the width direction of the return liquid tank, thereby achieving a better spraying effect.

[0022] Preferably, the inner wall of the upper receiving cavity is provided with an embedding groove connected to the first baffle and the second baffle. The side wall of the embedding groove is provided with a fixing member for fixing the first baffle and the second baffle. The top of the first baffle is higher than the top of the second baffle. The top of the first baffle is higher than the bottom of the drying cylinder body. The top of the second baffle is lower than the bottom of the drying cylinder body. The liquid spraying port is located between the first baffle and the second baffle.

[0023] By adopting the above technical solution, the first baffle and the second baffle prevent the sprayed liquid from spreading to the surroundings and affecting the environment when spraying the top drying cylinder, while also avoiding scratching the surface of the cylinder.

[0024] In summary, the first and second baffles confine the spraying area to the bottom of the drying cylinder, and in conjunction with the return liquid tank, collect splashed mineral oil, avoiding waste and environmental impact. Furthermore, continuous spraying, compared to manual spraying, creates a continuous waterproof layer, significantly reducing paper adhesion. The stepping mechanism enables spraying of multiple drying cylinders, and the width sliding mechanism allows for lateral movement of the row of nozzles, adjusting the axial spraying range of the drying cylinder, making it more convenient to use and operate. Attached Figure Description

[0025] Figure 1 This is a schematic cross-sectional view of the drying cylinder in the embodiment;

[0026] Figure 2 yes Figure 1 An enlarged schematic diagram of part A is shown below;

[0027] Figure 3 This is a structural schematic diagram of an embodiment;

[0028] Figure 4 This is a front view of an embodiment;

[0029] Figure 5 This is a schematic diagram of the left side structure of the return tank in the embodiment.

[0030] Figure 6 This is a schematic diagram of the right side structure of the return tank in the embodiment;

[0031] Figure 7 This is a schematic cross-sectional view of the right side of the return tank in the embodiment;

[0032] In the diagram, 1. Drying cylinder body; 11. Waterproof layer; 21. Main support; 22. Secondary support; 23. First lower support rod; 24. Second lower support rod; 25. Vertical support rod; 3. Return tank; 31. Upper receiving cavity; 32. Opening; 33. Base plate; 34. Lower receiving cavity; 41. Roller; 42. Roller; 43. Guide groove; 44. Guide block; 51. Rack; 52. Stepper gear; 53. First stepper motor; 6. Linked nozzle mechanism; 61. Housing; 62. Spray nozzle; 63. Inlet; 71. Base; 72. Guide shaft; 73. Second stepper motor; 74. Screw; 75. First gear; 76. Speed ​​balancing gear; 77. Second gear; 81. First baffle; 82. Second baffle; 83. Embedded groove; 84. Fixing component. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law. Example

[0035] like Figure 1 and Figure 2 As shown, during the use of the drying cylinder, sprayed mineral oil is used to coat the surface of the drying cylinder body 1 in the papermaking industry to prevent sticking. The dilution ratio is 1:10 to 1:30. When using it, the diluted mineral oil is sprayed onto the surface of the drying cylinder two hours in advance to ensure that the mineral oil forms a film on the surface of the drying cylinder. The sprayed mineral oil has good chemical and thermal stability and can form a uniform and dense protective film on the surface of the drying cylinder, effectively preventing the fibers, colloids and other substances in the paper from contacting the surface of the drying cylinder, thereby achieving the purpose of preventing sticking.

[0036] like Figures 3 to 7 As shown, a structure for an anti-sticking drying cylinder for spraying mineral oil includes a frame and a drying cylinder body 1. The drying cylinder body 1 is located on the upper part of the frame and is evenly distributed along the length of the frame. A return liquid tank 3 is slidably connected to the lower part of the frame. The return liquid tank 3 slides along the length of the frame. Sliding mechanisms connected to the frame are provided on both sides of the width direction of the return liquid tank 3. A row of nozzles 6 for spraying organic mineral oil is provided above the return liquid tank 3. A waterproof layer 11 is formed by spraying mineral oil through the row of nozzles 6. The row of nozzles 6 is positioned towards the bottom of the drying cylinder. A width sliding mechanism is provided between the row of nozzles 6 and the return liquid tank 3. The width sliding mechanism controls the row of nozzles 6 to move axially along the drying cylinder body 1. The width sliding mechanism is located on one side of the bottom width direction of the return liquid tank 3. A stepping mechanism for driving the return liquid tank 3 to move along the length direction of the frame is provided on the other side of the bottom width direction of the return liquid tank 3.

[0037] like Figure 3 and Figure 4As shown, the frame structure includes a main support 21, a secondary support 22, a first lower support rod 23, a second lower support rod 24, and a vertical support rod 25. The main supports 21 are welded together to form a cuboid frame structure. The two ends of the first lower support rod 23 and the second lower support rod 24 are welded to the main support 21. The two sides of the drying cylinder 1 are rotatably connected to the secondary support 22 through bearing seats. The first lower support rod 23 extends along the length of the main support 21, and the second lower support rod 24 is located above the first lower support rod 23. The second lower support rod 24 extends along the length of the main support 21. The vertical support rod 25 is located between the first lower support rod 23 and the second lower support rod 24. The top of the vertical support rod 25 is fixedly connected to the bottom of the second lower support rod 24 by bolts. The bottom of the vertical support rod 25 is fixedly connected to the top of the first lower support rod 23 by bolts. The top of the second lower support rod 24 is welded and fixed to the bottom of the sub-support 22. The top of the sub-support 22 is connected to the main support 21. The sub-support 22 is evenly distributed along the length of the main support 21.

[0038] like Figures 3 to 7 As shown, the return tank 3 is used to receive falling organic mineral oil and connect to the drive equipment. The structure of the return tank 3 includes an upper receiving cavity 31, an opening 32, a bottom plate 33, and a lower receiving cavity 34. The return tank 3 has a cuboid structure. The upper receiving cavity 31 is located inside the return tank 3. The opening 32 is located at the top of the upper receiving cavity 31 and communicates downward with the upper receiving cavity 31. The bottom plate 33 is located at the bottom of the upper receiving cavity 31. The center of the bottom plate 33 is curved upward into a semi-circle. The bottom plate 33 separates the upper receiving cavity 31 and the lower receiving cavity 34 in height. The lower receiving cavity 34 is located at the bottom of the bottom plate 33 and is arranged through the bottom of the return tank 3 and on both sides in the width direction.

[0039] like Figure 4 As shown, in order to drive the return liquid tank 3 to move below the main support 21, it includes a supporting moving part and a driving part. The supporting moving part is a sliding mechanism, which includes rollers 41 and rollers 42 arranged on both sides of the width direction of the return liquid tank 3. The rollers 42 are located between the first lower support rod 23 and the second lower support rod 24. The rollers 41 and rollers 42 are connected by bearings. The top of the rollers 42 abuts against the bottom of the second lower support rod 24. At the same time, below the return liquid tank 3, a guide groove 43 is provided on the inner side of the adjacent first lower support rod 23. Guide blocks 44 that cooperate with the guide groove 43 are provided on both sides of the width direction of the return liquid tank 3. The guide groove 43 is set upward, and the guide blocks 44 are set downward in an L-shape and located on both sides of the lower receiving cavity 34.

[0040] like Figure 4 and Figure 5As shown, the driving part includes a stepping mechanism, which includes a rack 51, a stepping gear 52 and a first stepping motor 53. The first stepping motor 53 is located on one side of the lower receiving cavity 34. The motor shaft of the first stepping motor 53 is connected to the stepping gear 52. The rack 51 is arranged upward in the guide groove 43 and extends along the length direction of the guide groove 43. The rack 51 cooperates with the stepping gear 52.

[0041] like Figure 7 As shown, to avoid the spray mist affecting the surrounding production environment, the return liquid tank 3 extends upward on both sides along its length to form a first baffle 81 and a second baffle 82 corresponding to the bottom of the drying cylinder 1. At the same time, the inner wall of the upper receiving cavity 31 is provided with an embedding groove 83 connected to the first baffle 81 and the second baffle 82. The side wall of the embedding groove 83 is provided with a fixing member 84 for fixing the first baffle 81 and the second baffle 82. The fixing member 84 is a bolt, which locks the baffle in the embedding groove 83. The top of the first baffle 81 is higher than the top of the second baffle 82, and the top of the first baffle 81 is higher than the bottom of the drying cylinder 1. The top of the second baffle 82 is lower than the bottom of the drying cylinder 1. That is, after the spraying is completed, during the movement of the return liquid tank 3, the lower second baffle 82 can avoid scratching the waterproof layer 11. The spray nozzle 62 is located between the first baffle 81 and the second baffle 82.

[0042] like Figure 4 and Figure 7 As shown, the row of nozzles 6 serves to spray mineral oil. Its specific structure and linkage mechanism are as follows: The row of nozzles 6 includes a housing 61, spray nozzles 62, and inlet 63. The spray nozzles 62 are positioned above the housing 61 and facing upwards. The inlet 63 is located on one side of the housing 61. The lower part of the spray nozzles 62 communicates with the inlet 63 within the housing 61. The spray nozzles 62 are evenly distributed along the length of the housing 61. The row of nozzles 6 moves in the width direction of the return tank 3 via a width sliding mechanism. The width sliding mechanism includes a base 71, a guide shaft 72, and a second stepper motor. 73, screw 74, first gear 75, speed-matching gear 76 and second gear 77, second stepper motor 73 is located on the other side of the lower receiving cavity 34, first gear 75 is connected to the motor shaft of second stepper motor 73, speed-matching gear 76 is located on the side wall of return tank 3 and meshes with first gear 75 and second gear 77 respectively, second gear 77 is located at the end of screw 74, base 71 is threadedly connected to screw 74, housing 61 is located on base 71, screw 74 and guide shaft 72 are arranged through the width direction of upper receiving cavity 31, guide shaft 72 is slidably connected to base 71.

[0043] Working principle:

[0044] The stepper motor rotates, moving the return liquid tank 3 to below the drying cylinder 1 that needs to be sprayed. At this time, mineral oil enters the row of nozzles 6 through the inlet 63 and is sprayed upwards to the bottom of the rotating drying cylinder 1, forming a uniform waterproof layer 11 on the surface of the drying cylinder 1. At the same time, the first baffle 81 and the second baffle 82 work together to prevent spray or liquid splashing. The width sliding mechanism drives the screw 74 to rotate, moving the row of nozzles 6 to adjust the spraying range. After the spraying is completed, the stepper motor rotates, moving the return liquid tank 3 backwards to below the next drying cylinder 1 that needs to be sprayed.

[0045] The waterproof layer 11 formed by mineral oil spraying has the following effects:

[0046] Significantly prevents paper from sticking to the drying cylinder: It can effectively reduce the adhesion of paper to the drying cylinder surface, improve the surface quality of paper, reduce the defect rate, and increase the yield.

[0047] Low cost: Spraying mineral oil is relatively inexpensive, has a wide range of dilution ratios, and requires less usage, which can reduce production costs.

[0048] Easy to operate: Simply dilute the mineral oil according to the ratio and spray it onto the surface of the drying cylinder; no complicated equipment or process is required.

[0049] It is environmentally friendly: it does not pollute the environment and meets environmental protection requirements.

[0050] Improved production efficiency: Reduced downtime for cleaning the drying cylinders increased equipment uptime, thereby improving production efficiency.

[0051] During the spraying process:

[0052] 1. Dilute the spraying mineral oil at a ratio of 1:10. When the paper machine is stopped, use a spray gun to evenly spray the diluted mineral oil onto the surface of the drying cylinder. The amount of spray should be sufficient to completely wet the surface of the drying cylinder. After spraying, let the drying cylinder air dry naturally for two hours to allow the mineral oil to fully form a film on the surface of the drying cylinder. Then start the paper machine for normal production and observe the drying cylinder sticking. After testing, during the continuous production of 100 tons of paper, the drying cylinder sticking phenomenon was significantly reduced, the paper surface quality was good, and the defect rate was reduced by 15% compared with before using the method of this invention.

[0053] 2. Dilute the spraying mineral oil at a ratio of 1:20 and spray and produce the paper using the same method as in Example 1. During the continuous production of 150 tons of paper, almost no sticking occurred on the drying cylinder, the paper surface was smooth and flat, the yield increased by 20%, and the production efficiency was significantly improved.

[0054] 3. Dilute the spraying mineral oil at a ratio of 1:30 and repeat the above steps. During production, this also achieved a good anti-sticking effect, and further reduced usage costs while ensuring the anti-sticking effect.

Claims

1. A structure for an anti-sticking drying cylinder for spraying mineral oil, comprising a frame and a drying cylinder body (1), characterized in that: The surface of the drying cylinder body (1) is coated with a waterproof layer (11). The drying cylinder body (1) is located on the upper part of the frame and is evenly distributed along the length of the frame. A return liquid tank (3) is slidably connected to the lower part of the frame. The return liquid tank (3) slides along the length of the frame. Sliding mechanisms connected to the frame are provided on both sides of the width direction of the return liquid tank (3). A row of nozzles (6) is provided above the return liquid tank (3). The row of nozzles (6) faces the bottom of the drying cylinder. 6) A width sliding mechanism is provided between the return liquid tank (3) and the return liquid tank (3). The width sliding mechanism controls the row of nozzles (6) to move along the axial direction of the drying cylinder (1). The width sliding mechanism is provided on one side of the bottom width direction of the return liquid tank (3). A stepping mechanism is provided on the other side of the bottom width direction of the return liquid tank (3) to drive the return liquid tank (3) to move along the length direction of the frame. The two sides of the return liquid tank (3) extend upward to form a first baffle (81) and a second baffle (82) corresponding to the bottom of the drying cylinder (1).

2. The anti-sticking cylinder structure for spraying mineral oil according to claim 1, characterized in that: The return tank (3) includes an upper receiving cavity (31), an opening (32), a bottom plate (33), and a lower receiving cavity (34). The upper receiving cavity (31) is located inside the return tank (3). The opening (32) is located at the top of the upper receiving cavity (31) and communicates with it. The bottom plate (33) is located at the bottom of the upper receiving cavity (31). The center of the bottom plate (33) is curved upward. The lower receiving cavity (34) is located at the bottom of the bottom plate (33) and is located through the bottom and both sides of the return tank (3) in the width direction.

3. The anti-sticking cylinder structure for spraying mineral oil according to claim 2, characterized in that: The frame includes a main support (21), a secondary support (22), a first lower support rod (23), a second lower support rod (24), and a vertical support rod (25). The drying cylinder (1) is rotatably connected to the secondary support (22) on both sides of the axial direction. The first lower support rod (23) extends along the length of the main support (21). The second lower support rod (24) is located above the first lower support rod (23) and extends along the length of the main support (21). The vertical support rod (25)... The support rod (25) is located between the first lower support rod (23) and the second lower support rod (24). The top of the vertical support rod (25) is connected to the bottom of the second lower support rod (24), the bottom of the vertical support rod (25) is connected to the top of the first lower support rod (23), the top of the second lower support rod (24) is connected to the bottom of the sub-support (22), the top of the sub-support (22) is connected to the main support (21), and the sub-support (22) is evenly distributed along the length of the main support (21).

4. The anti-sticking cylinder structure for spraying mineral oil according to claim 3, characterized in that: The sliding mechanism includes a roller (41) and a roller (42) disposed on both sides of the return tank (3) in the width direction. The roller (42) is located between the first lower support rod (23) and the second lower support rod (24). The roller (41) and the roller (42) are connected by a bearing. The top of the roller (42) abuts against the bottom of the second lower support rod (24).

5. The anti-sticking cylinder structure for spraying mineral oil according to claim 4, characterized in that: A guide groove (43) is provided on the inner side of the adjacent first lower support rod (23). Guide blocks (44) that cooperate with the guide groove (43) are provided on both sides of the return liquid groove (3) in the width direction. The guide groove (43) is set upward, and the guide blocks (44) are set downward in an L shape and located on both sides of the lower receiving cavity (34).

6. The anti-sticking cylinder structure for spraying mineral oil according to claim 1, characterized in that: The waterproof layer (11) is formed by spraying mineral oil through a row of nozzles (6).

7. The anti-sticking cylinder structure for spraying mineral oil according to claim 5, characterized in that: The stepping mechanism includes a rack (51), a stepping gear (52), and a first stepping motor (53). The first stepping motor (53) is located on one side of the lower receiving cavity (34). The motor shaft of the first stepping motor (53) is connected to the stepping gear (52). The rack (51) is positioned upward in the guide groove (43). The rack (51) extends along the length of the guide groove (43). The rack (51) engages with the stepping gear (52).

8. The anti-sticking cylinder structure for spraying mineral oil according to claim 7, characterized in that: The row of nozzles (6) includes a housing (61), a spray nozzle (62) and a liquid inlet (63). The spray nozzle (62) is located above the housing (61) and faces upward. The liquid inlet (63) is located on one side of the housing (61). The lower part of the spray nozzle (62) and the liquid inlet (63) are connected inside the housing (61). The spray nozzles (62) are evenly distributed along the length of the housing (61).

9. The anti-sticking cylinder structure for spraying mineral oil according to claim 8, characterized in that: The width sliding mechanism includes a base (71), a guide shaft (72), a second stepper motor (73), a screw (74), a first gear (75), a speed-matching gear (76), and a second gear (77). The second stepper motor (73) is located on the other side of the lower receiving cavity (34). The first gear (75) is connected to the motor shaft of the second stepper motor (73). The speed-matching gear (76) is located on the side wall of the return fluid tank (3) and meshes with the first gear (75) and the second gear (77) respectively. The second gear (77) is located at the end of the screw (74). The base (71) is threadedly connected to the screw (74). The housing (61) is located on the base (71). The screw (74) and the guide shaft (72) are arranged through the width direction of the upper receiving cavity (31). The guide shaft (72) is slidably connected to the base (71).

10. The anti-sticking cylinder structure for spraying mineral oil according to claim 9, characterized in that: The inner wall of the upper receiving cavity (31) is provided with an embedding groove (83) connected to the first baffle (81) and the second baffle (82). The side wall of the embedding groove (83) is provided with a fixing member (84) fixed to the first baffle (81) and the second baffle (82). The top of the first baffle (81) is higher than the top of the second baffle (82). The top of the first baffle (81) is higher than the bottom of the drying cylinder (1). The top of the second baffle (82) is lower than the bottom of the drying cylinder (1). The liquid spraying port (62) is located between the first baffle (81) and the second baffle (82).

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