A residual glue recovery device and a regeneration method for corrugated board production

Abstract

The application belongs to the technical field of corrugated board production, in particular to a residual glue recovery equipment and a regeneration method for corrugated board production, which comprises a pasting mechanism; the pasting mechanism comprises a glue storage bin, a glue roller and a glue distributing roller; the glue roller and the glue distributing roller are partially located in the glue storage bin; a protrusion is fixedly connected to the lower left of the glue distributing roller in the glue storage bin; a first rotating roller is rotatably connected to the inner wall of the glue storage bin on the left side of the protrusion; a second motor is fixedly connected to the outer surface of the glue storage bin; a second rotating roller and a third rotating roller are placed in the glue storage bin on the left side of the protrusion; a cleaning belt is placed in the glue storage bin on the left side of the protrusion; the cleaning belt is in a relaxed state in the initial state; evenly arranged liquid outlet pipes are installed in the glue storage bin; the application is mainly used to solve the problem that manual cleaning and recovery of the glue roller, the glue distributing roller and the residual glue in the glue storage bin on the pasting mechanism are needed when the residual glue of the single facer is recovered, thereby increasing the labor.

Description

Technical Field

[0001] This invention belongs to the field of corrugated cardboard production technology, specifically a residual glue recycling device and recycling method for corrugated cardboard production. Background Technology

[0002] Corrugated cardboard, also known as corrugated paperboard, is made by bonding at least one layer of corrugated paper and one layer of linerboard (also called boxboard). It has good elasticity and extensibility. It is mainly used to manufacture cartons, carton fillings, and other packaging materials for fragile goods. It is primarily made from traditional methods of pulping straw pulp and waste paper to create a base paperboard similar to cardboard, which is then mechanically rolled into a corrugated shape. Finally, it is bonded to the linerboard using adhesives such as sodium silicate.

[0003] In existing traditional corrugated cardboard production lines, after the glue-gluing machine and single-facer finish their work, the residual glue water used for cleaning the equipment is treated as wastewater and discharged directly after wastewater treatment. This not only increases the consumption of raw and auxiliary materials such as starch, borax, caustic soda, and water by directly discharging the residual glue, but also increases wastewater treatment costs.

[0004] In order to make the residual adhesive water of the cleaning equipment recyclable, after our company has carried out research and development and achieved results, we have filed a patent application with application number 2018110183223, entitled "A method and device for recycling and regenerating residual adhesive in a corrugated cardboard production line". It is mainly used to recycle and regenerate residual adhesive water, thereby saving resources.

[0005] However, in our subsequent work, we found that when recycling residual glue from the single-sided machine, it was still necessary to manually clean and recycle the glue coating rollers, the glue leveling rollers on the glue application mechanism, and the remaining residual glue in the glue storage bin, which increased labor and costs. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a residual glue recycling device and recycling method for corrugated cardboard production.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a residual glue recycling device for corrugated cardboard production, comprising a glue application mechanism; the glue application mechanism includes a glue storage bin, a glue coating roller, and a glue leveling roller; the glue coating roller and the glue leveling roller are partially located inside the glue storage bin; and a rotating shaft is fixedly connected inside both the glue coating roller and the glue leveling roller.

[0008] Inclined plates are fixedly connected to both sides of the coating roller and the leveling roller on the upper surface of the glue storage bin. Each inclined plate has a long groove, and the rotating shafts of the coating roller and the leveling roller extend into the long groove. Slides are provided on both sides of the long groove on the inclined plates. Drive blocks are rotatably connected to the rotating shafts on both sides of the coating roller and the leveling roller. A sliding plate is fixedly connected to the side of the drive block closest to the slide, and the sliding plate is slidably connected to the slide. A first motor is fixedly connected to one of the drive blocks on both sides of the coating roller and the leveling roller, and the first motor is fixedly connected to the rotating shaft on both the coating roller and the leveling roller. An electric telescopic rod is fixedly connected below the drive block on the glue storage bin, and the extension shaft of the electric telescopic rod is fixedly connected to the drive block.

[0009] The lower left side of the coating roller is fixedly connected to a protrusion inside the glue storage bin, and the height of the protrusion is greater than the height of the coating roller to the bottom of the glue storage bin.

[0010] The left side of the protrusion is rotatably connected to the inner wall of the glue storage tank, and the outer surface of the glue storage tank is fixedly connected to the second motor, and the output shaft of the second motor is fixedly connected to the first roller.

[0011] The second and third rollers are also placed on the left side of the protrusion inside the rubber storage tank, and the second and third rollers have the same structure; the second and third rollers each include two coarse rollers and one fine roller; each of the two coarse rollers has a sliding cavity, and the fine roller slides in the sliding cavity, while the fine roller is connected to the sliding cavity by a spring; slots are provided on the side of the coarse rollers away from the fine rollers.

[0012] A cleaning belt is placed inside the rubber storage bin on the left side of the protrusion, and the first, second, and third rollers are located within the inner ring of the cleaning belt; the cleaning belt is initially in a relaxed state.

[0013] A first insert rod is fixedly connected to the inner surface of both sides of the glue-storing bin below the glue-coating roller and the glue-spreading roller; a second insert rod is fixedly connected to the inner surface of both sides of the glue-storing bin below the glue-coating roller.

[0014] The storage bin is equipped with evenly distributed liquid outlet pipes, and valves are installed on the liquid outlet pipes.

[0015] Preferably, the cleaning belt is made of woven elastic belt;

[0016] The outer surface of the cleaning belt is fixed with a uniformly arranged cotton layer;

[0017] The cleaning strip is connected end to end by Velcro.

[0018] Preferably, the outer surface of the protrusion near the first roller is fixed with uniformly arranged particles;

[0019] The particles fixed to the outer surface of the protrusion are rubber particles.

[0020] Preferably, the glue storage bin has grooves on both sides, and partitions are slidably connected in the grooves, with the partitions fitting against the protrusions.

[0021] A method for recycling residual adhesive in corrugated cardboard production involves using the aforementioned residual adhesive recycling equipment to recycle the residual adhesive, followed by recycling.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. The residual glue recycling equipment and recycling method for corrugated cardboard production described in this invention can scrape the leveling roller, coating roller, and glue storage bin during the rotation of the cleaning belt. Simultaneously, with the downward flow of clean water, the residual glue in the leveling roller, coating roller, and glue storage bin can be diluted and cleaned. Furthermore, the rotation of the leveling roller and coating roller allows for better contact with the cleaning belt, resulting in more effective cleaning of the leveling roller, coating roller, and glue storage bin. This avoids the need for manual recycling and cleaning of residual glue on the leveling roller, coating roller, and glue storage bin, reducing labor costs and thus improving the efficiency of residual glue recycling.

[0024] 2. The residual glue recycling equipment and recycling method for corrugated cardboard production described in this invention, because the cleaning belt is woven from an elastic band, it has a certain degree of elasticity. When the second and third rollers are inserted into the first and second insert rods, the elasticity of the cleaning belt allows it to be stretched, preventing it from being unable to stretch and thus increasing the difficulty of inserting the second and third rollers into the first and second insert rods. At the same time, because a uniformly arranged cotton layer is fixed to the outer surface of the cleaning belt, the presence of the cotton layer can improve the cleaning effect on the glue-spreading roller, the glue-coating roller, and the glue storage bin during the rotation of the cleaning belt. Furthermore, because the cleaning belt is connected end to end by Velcro, when it is necessary to clean or replace the cleaning belt, the Velcro can be torn open to remove the cleaning belt for cleaning or replacement. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a perspective view of the paste-up mechanism of the present invention in operation;

[0027] Figure 2 This is the present invention. Figure 1 Sectional view in;

[0028] Figure 3 This is the present invention. Figure 1 Enlarged view of a portion of point A in the middle;

[0029] Figure 4 This is a perspective view of the paste-applying mechanism during cleaning according to the present invention;

[0030] Figure 5 This is the present invention. Figure 4 Sectional view in;

[0031] Figure 6 This is a cross-sectional view of the second roller in this invention.

[0032] In the diagram: 1. Glue storage bin; 11. Glue application roller; 12. Glue leveling roller; 13. Rotating shaft; 14. Inclined plate; 15. Long groove; 16. Slide rail; 17. Drive block; 18. Slide plate; 19. First motor; 191. Electric telescopic rod; 2. Protrusion; 21. First rotating roller; 22. Second motor; 23. Second rotating roller; 24. Third rotating roller; 25. Coarse roller; 26. Fine roller; 27. Slot; 28. Liquid outlet pipe; 3. Cleaning belt; 31. First insertion rod; 32. Second insertion rod; 33. Partition plate; 34. Slide rail. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] like Figures 1 to 6 As shown, the residual adhesive recycling equipment and recycling method for corrugated cardboard production according to the present invention are as follows:

[0035] A residual glue recycling device for corrugated cardboard production includes a glue application mechanism; the glue application mechanism includes a glue storage bin 1, a glue coating roller 11, and a glue spreading roller 12; the glue coating roller 11 and the glue spreading roller 12 are partially located inside the glue storage bin 1; a rotating shaft 13 is fixedly connected inside both the glue coating roller 11 and the glue spreading roller 12.

[0036] Both sides of the coating roller 11 and the leveling roller 12 are fixedly connected to inclined plates 14 on the upper surface of the glue storage bin 1; each inclined plate 14 has a long groove 15, and the rotating shafts 13 on the coating roller 11 and the leveling roller 12 extend into the long groove 15; each side of the long groove 15 is provided with a slide rail 16 on the inclined plate 14; each rotating shaft 13 on both sides of the coating roller 11 and the leveling roller 12 is rotatably connected to a drive block 17; the drive block 17 is close to the slide rail 16. A slide plate 18 is fixedly connected to one side of the 6, and the slide plate 18 is slidably connected to the slide rail 16; a first motor 19 is fixedly connected to one of the drive blocks 17 on both sides of the glue coating roller 11 and the glue leveling roller 12, and the first motor 19 is fixedly connected to the rotating shaft 13 on the glue coating roller 11 and the glue leveling roller 12; an electric telescopic rod 191 is fixedly connected to the glue storage bin 1 below the drive block 17, and the extension shaft of the electric telescopic rod 191 is fixedly connected to the drive block 17.

[0037] The lower left side of the coating roller 12 is fixedly connected to a protrusion 2 inside the glue storage bin 1, and the height of the protrusion 2 is greater than the height of the coating roller 11 to the bottom of the glue storage bin 1.

[0038] The protrusion 2 is rotatably connected to the first rotating roller 21 on the left side of the inner wall of the glue storage tank 1, and the outer surface of the glue storage tank 1 is fixedly connected to the second motor 22, and the output shaft of the second motor 22 is fixedly connected to the first rotating roller 21.

[0039] On the left side of the protrusion 2, inside the glue storage bin 1, there are also a second roller 23 and a third roller 24, and the second roller 23 and the third roller 24 have the same structure; the second roller 23 and the third roller 24 each include two coarse rollers 25 and one fine roller 26; each of the two coarse rollers 25 has a sliding cavity, and the fine roller 26 slides in the sliding cavity, and the fine roller 26 is connected to the sliding cavity by a spring; each of the coarse rollers 25 has a slot 27 on the side away from the fine roller 26;

[0040] The cleaning belt 3 is placed inside the glue storage bin 1 on the left side of the protrusion 2, and the first roller 21, the second roller 23 and the third roller 24 are located in the inner circle of the cleaning belt 3; the cleaning belt 3 is initially in a relaxed state;

[0041] The glue-applying roller 11 and the glue-spreading roller 12 are each fixedly connected to the inner surfaces of both sides of the glue storage bin 1 with a first insertion rod 31; the glue-applying roller 11 is each fixedly connected to the inner surfaces of both sides of the glue storage bin 1 with a second insertion rod 32.

[0042] The storage bin 1 is equipped with uniformly arranged liquid outlet pipes 28, and valves are installed on the liquid outlet pipes 28.

[0043] Specifically, when the gluing mechanism is working, the first motor 19 drives the even-spreading roller 12 and the coating roller 11 to rotate. Since the first motor 19, which is mounted on the drive block 17, is limited in the slide rail 16 by the slide plate 18, it can prevent the first motor 19 from rotating along with the even-spreading roller 12 and the coating roller 11. During the rotation of the coating roller 11, the glue in the glue storage bin 1 can be adsorbed onto the coating roller 11. During the rotation of the even-spreading roller 12, the glue adsorbed on the coating roller 11 can be spread evenly. Then, the glue is transferred to the tip of the corrugated paper and bonded to the face paper through the coating roller 11. Due to the presence of the protrusion 2, the glue in the glue storage bin 1 can be prevented from flowing to the left side of the protrusion 2. When the gluing mechanism finishes working, the first motor 19 is controlled to stop rotating. Then, the residual glue in the even-spreading roller 12, the coating roller 11, and the glue storage bin 1 is recycled and cleaned.

[0044] When cleaning and recycling residual glue in the glue-spreading roller 12, the glue-applying roller 11, and the glue storage bin 1, the electric telescopic rod 191 is first extended. During the extension of the electric telescopic rod 191, the drive block 17 can be moved. Since the slide plate 18 fixed on the drive block 17 slides in the slide rail 16, the drive block 17 can be moved on the inclined plate 14. At the same time, since the rotating shaft 13 on the glue-spreading roller 12 and the glue-applying roller 11 is rotatably connected to the drive block 17, and the rotating shaft 13 on the glue-spreading roller 12 and the glue-applying roller 11 extends into the long groove 15, thus... This can move the leveling roller 12 and the coating roller 11 to the upper left. By moving the leveling roller 12 and the coating roller 11 to the upper left, they can be offset from the corrugated roller, thus preventing the coating roller 11 from colliding with the corrugated roller during movement. After the leveling roller 12 and the coating roller 11 are removed from the glue storage bin 1, the operator holds the second rotating roller 23 and moves it to the right side of the protrusion 2, inserting the slot 27 on one of the coarse rollers 25 into the first insert rod 31. Then, the operator squeezes the other coarse roller 25, thereby compressing the spring connected to the fine roller 26. The length of the second roller 23 is shortened, and then the slot 27 on the coarse roller 25 on the other side is inserted into the first insert rod 31 on the other side, thus completing the installation of the second roller 23. Next, the worker picks up the third roller 24 and moves it to the second insert rod 32. First, one of the coarse rollers 25 on the third roller 24 is inserted into the second insert rod 32. Then, the worker squeezes the coarse roller 25 on the other side, thereby shortening the overall length of the third roller 24. Finally, the slot 27 on the coarse roller 25 on the other side is inserted into the second insert rod on the other side. 32. The installation of the third roller 24 is completed. At this time, the cleaning belt 3 is in a taut state. Then, the electric telescopic rod 191 is controlled to return to the initial state, and the glue-spreading roller 12 and the glue-coating roller 11 are driven to return to the initial state. When the glue-spreading roller 12 and the glue-coating roller 11 return to the initial state, the cleaning belt 3 is in contact with the glue-spreading roller 12, the glue-coating roller 11 and the bottom surface of the glue storage bin 1. By first moving the glue-spreading roller 12 and the glue-coating roller 11 to the upper left, it is convenient for the staff to install the second roller 23 and the third roller 24. Then, the second motor 22 is controlled to rotate.

[0045] While controlling the rotation of the second motor 22, the first motor 19 is also controlled to rotate, thereby controlling the rotation of the leveling roller 12 and the coating roller 11. Simultaneously, clean water is introduced between the leveling roller 12 and the coating roller 11. During the rotation of the second motor 22, the first roller 21 is driven to rotate. The rotation of the first roller 21 drives the cleaning belt 3 to rotate. The rotation of the cleaning belt 3 pushes the second roller 23 and the third roller 24 to rotate around the first insertion rod 31 and the second insertion rod 32. During the rotation of the cleaning belt 3, the leveling roller 12, the coating roller 11, and the glue storage bin 1 are scraped together. Simultaneously, with the downward flow of clean water, the residual glue in the even-spreading roller 12, the coating roller 11, and the glue storage bin 1 can be diluted and cleaned. At the same time, during the rotation of the even-spreading roller 12 and the coating roller 11, the even-spreading roller 12 and the coating roller 11 can make better contact with the cleaning belt 3, thereby better cleaning the even-spreading roller 12, the coating roller 11, and the glue storage bin 1. This avoids the need for manual recycling and cleaning of residual glue on the even-spreading roller 12, the coating roller 11, and the glue storage bin 1, which would increase labor costs. Meanwhile, the wastewater after cleaning will flow out through the liquid outlet pipe 28, and then be pumped out by the diaphragm pump and wait for regeneration.

[0046] After cleaning the leveling roller 12, the coating roller 11, and the glue storage bin 1, the first motor 19 and the second motor 22 are stopped. Then, the electric telescopic rod 191 is extended to move the leveling roller 12 and the coating roller 11 to the upper left position. Then, the worker squeezes the coarse roller 25 on the second roller 23 and the third roller 24 to shorten the overall length of the second roller 23 and the third roller 24, and disengages the first rod and the second insert rod 32 from the slot 27. At this time, the second roller 23 and the third roller 24 can be removed from the first insert rod 31 and the second insert rod 32. Then, the second roller 23, the third roller 24, and the cleaning belt 3 are placed on the left side of the protrusion 2, and the leveling roller 12 and the coating roller 11 are restored to their initial state.

[0047] In the specific implementation process, the cleaning belt 3 is made of woven elastic belt;

[0048] The outer surface of the cleaning belt 3 is fixed with a uniformly arranged cotton layer;

[0049] The cleaning band 3 is connected end to end by Velcro;

[0050] Specifically, since the cleaning belt 3 is woven from an elastic belt, it has a certain degree of elasticity. When the second roller 23 and the third roller 24 are inserted into the first insert rod 31 and the second insert rod 32, the cleaning belt 3 can be stretched due to its elasticity, preventing it from being unable to stretch and thus increasing the difficulty of inserting the second roller 23 and the third roller 24 into the first insert rod 31 and the second insert rod 32.

[0051] Meanwhile, since the outer surface of the cleaning belt 3 is fixed with a uniformly arranged cotton layer, when the cleaning belt 3 rotates, the presence of the cotton layer can improve the cleaning effect on the glue-spreading roller 12, the glue-coating roller 11, and the glue storage bin 1.

[0052] Meanwhile, since the cleaning belt 3 is connected end to end by Velcro, when it is necessary to clean or replace the cleaning belt 3, the Velcro can be torn open to remove the cleaning belt 3 for cleaning or replacement.

[0053] In the specific implementation process, the outer surface of the protrusion 2 near the first rotating roller 21 is fixed with uniformly arranged particles;

[0054] The particles fixed to the outer surface of the protrusion 2 are rubber particles;

[0055] Specifically, since the outer surface of the protrusion 2 is fixed with uniformly closed rubber particles, when the cleaning belt 3 rotates, the uniformly arranged rubber particles can come into contact with the cleaning belt 3, thereby scraping the cleaning belt 3 and removing the residual glue adhering to the cleaning belt 3. This prevents the residual glue adhering to the cleaning belt 3 from affecting the cleaning effect on the glue-spreading roller 12, the glue-coating roller 11, and the glue storage bin 1.

[0056] In the specific implementation process, the glue storage bin 1 is provided with grooves 34 on both sides, and partitions 33 are slidably connected in the grooves 34, and the partitions 33 are in contact with the protrusions 2.

[0057] Specifically, when the glue applicator is working, the partition 33 is located in the chute 34, which can block the glue and prevent the glue from splashing onto the left side of the protrusion 2. When cleaning the glue roller 12, the glue applicator roller 11 and the glue storage bin 1, the glue can slide out of the chute 34 through the partition 33.

[0058] Regarding the method for recycling residual adhesive, this invention still adopts the technology already disclosed by our company, the recycling method in the patent application number CN2018110183223, entitled "A Method and Apparatus for Recycling Residual Adhesive in a Corrugated Board Production Line," and the method steps are as follows:

[0059] 1) Wastewater collection: After production is completed, collect the equipment cleaning wastewater from the production line for treatment. The equipment cleaning wastewater includes the cleaning water for the glue machine, single-sided machine, glue bucket, glue tray, and pipeline.

[0060] 2) Concentration detection: Transfer the wastewater collected in step (1) to a collection and mixing tank, stir evenly, and then use an international Cotton 4# cup to detect the liquid concentration;

[0061] 3) Residual adhesive regeneration: Add raw and auxiliary materials to the wastewater whose concentration has been determined in step (2) for regeneration. The raw and auxiliary materials are water, starch, borax and caustic soda, and then usable regenerated adhesive can be obtained.

[0062] Furthermore, the other specific methods and steps are the same as the technology disclosed by our company above, as can be found in CN2018110183223, which is prior art and will not be elaborated on in this invention.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A residual glue recovery apparatus for corrugated board production, characterized by, It includes a glue-applying mechanism; the glue-applying mechanism includes a glue storage bin (1), a glue-applying roller (11) and a glue-spreading roller (12); the glue-applying roller (11) and the glue-spreading roller (12) are partially located inside the glue storage bin (1); a rotating shaft (13) is fixedly connected inside the glue-applying roller (11) and the glue-spreading roller (12); Both sides of the coating roller (11) and the leveling roller (12) are fixedly connected to inclined plates (14) on the upper surface of the glue storage bin (1); each inclined plate (14) has a long groove (15) and the rotating shaft (13) on the coating roller (11) and the leveling roller (12) extends into the long groove (15); both sides of the long groove (15) are provided with slide rails (16) on the inclined plate (14); each rotating shaft (13) on both sides of the coating roller (11) and the leveling roller (12) is rotatably connected to a drive block (17); the drive block (17) is close to the slide rail. A slide plate (18) is fixedly connected to one side of (16), and the slide plate (18) is slidably connected to the slide rail (16); a first motor (19) is fixedly connected to one of the drive blocks (17) on both sides of the glue coating roller (11) and the glue leveling roller (12), and the first motor (19) is fixedly connected to the rotating shaft (13) on the glue coating roller (11) and the glue leveling roller (12); an electric telescopic rod (191) is fixedly connected to the bottom of the drive block (17) on the glue storage bin (1), and the extension shaft of the electric telescopic rod (191) is fixedly connected to the drive block (17); The glue-coating roller (12) is fixedly connected to a protrusion (2) in the glue storage bin (1) on the lower left side, and the height of the protrusion (2) is greater than the height of the glue-coating roller (11) to the bottom of the glue storage bin (1). The protrusion (2) is rotatably connected to the first roller (21) on the left side of the inner wall of the glue storage bin (1). The outer surface of the glue storage bin (1) is fixedly connected to the second motor (22), and the output shaft of the second motor (22) is fixedly connected to the first roller (21). The protrusion (2) is located on the left side of the rubber storage tank (1), where a second roller (23) and a third roller (24) are also placed, and the second roller (23) and the third roller (24) have the same structure; the second roller (23) and the third roller (24) each include two coarse rollers (25) and one fine roller (26); the two coarse rollers (25) each have a sliding cavity, and the fine roller (26) slides in the sliding cavity, and the fine roller (26) is connected to the sliding cavity by a spring; the side of the coarse roller (25) away from the fine roller (26) each has a slot (27); The left side of the protrusion (2) is located inside the glue storage bin (1) where a cleaning belt (3) is placed, and the first roller (21), the second roller (23) and the third roller (24) are located in the inner circle of the cleaning belt (3); the cleaning belt (3) is initially in a relaxed state; The coating roller (11) and the leveling roller (12) are each fixedly connected to a first insert rod (31) on the inner surface of both sides of the glue storage bin (1); the coating roller (11) is also fixedly connected to a second insert rod (32) on the inner surface of both sides of the glue storage bin (1). The glue storage tank (1) is equipped with uniformly arranged liquid outlet pipes (28), and valves are installed on the liquid outlet pipes (28).

2. The glue residue recovery device for corrugated paperboard production according to claim 1, characterized in that: The cleaning belt (3) is made of woven elastic belt.

3. The glue residue recovery device for corrugated paperboard production according to claim 2, characterized in that: The outer surface of the cleaning strip (3) is fixed with a uniformly arranged cotton layer.

4. The glue residue recovery device for corrugated paperboard production according to claim 3, characterized in that: The cleaning strip (3) is connected end to end by Velcro.

5. The glue residue recovery device for corrugated paperboard production according to claim 1, characterized in that: The outer surface of the protrusion (2) near the first roller (21) is fixed with uniformly arranged particles.

6. The glue residue recovery device for corrugated paperboard production according to claim 5, characterized in that: The particles fixed to the outer surface of the protrusion (2) are rubber particles.

7. The glue residue recovery device for corrugated paperboard production according to claim 1, characterized in that: The glue storage bin (1) has grooves (34) on both sides, and a partition (33) is slidably connected in the groove (34), and the partition (33) is in contact with the protrusion (2).

8. A method for recycling residual adhesive in corrugated cardboard production, characterized in that: The residual adhesive is recycled using the residual adhesive recycling equipment as described in any one of claims 1-7, and the recycled residual adhesive is then regenerated.

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