A fruit bag paper recycling device

Abstract

This invention relates to the field of solid waste recycling and treatment technology, and discloses a recycling and treatment device for fruit bag paper, comprising: a pretreatment unit, a multi-stage crushing, screening, and dispersing unit, a magnetic impurity removal unit, and a stirring, dispersing, and impurity removal unit. The pretreatment unit is used to crush and disperse the paper material layer by layer, exposing iron wires within the paper material. The multi-stage crushing, screening, and dispersing unit is used to crush the paper material into fine fragments at multiple stages, perform multi-stage pre-dispersing of the paper material, and remove exposed iron wires through multi-stage screening. The magnetic impurity removal unit is used to adsorb and remove residual iron wires from the fine fragments. The stirring, dispersing, and impurity removal unit is used to mix the fine fragments with water to form a thin slurry, perform final dispersing, and remove impurities from the thin slurry to obtain a qualified thin slurry. This invention efficiently removes impurities from the paper material, ensuring the recycled slurry meets purity standards and can directly replace a portion of the virgin slurry in papermaking production, resulting in high resource utilization.

Description

Technical Field

[0001] This invention relates to the field of solid waste recycling and treatment technology, and in particular to a fruit growing bag paper recycling and treatment device. Background Technology

[0002] Fruit bagging paper is a special protective paper widely used in the fruit planting industry. It is mainly used for bagging fruits such as apples, pears, peaches, and grapes, effectively blocking pests, diseases, and pesticide residues, and improving the appearance and quality of the fruit. It is a core consumable in the current production of pollution-free fruit products. To meet the needs of long-term outdoor use, wet-strength agents are generally added during the production process of fruit bagging paper, giving it excellent waterproof and moisture-proof properties. At the same time, each fruit bag is equipped with thin wire for binding and fixing the bag opening. Some fruit bagging paper also comes with waterproof film, adhesives, and other auxiliary materials, which makes the recycling and disposal of waste fruit bagging paper much more difficult than ordinary waste paper.

[0003] Existing waste paper recycling and processing equipment cannot efficiently separate impurities such as iron wire, adhesive, and sand from fruit bag paper, which can easily cause blockages in subsequent pulping equipment, affecting the purity of the pulp. In addition, ordinary pulping equipment cannot effectively dissolve fruit bag paper with added wet strength agents, resulting in incomplete fiber dissociation and poor quality of recycled pulp. Summary of the Invention

[0004] This application discloses a fruit-growing bag paper recycling and processing device to solve the problems in the prior art that cannot efficiently separate impurities such as iron wire, adhesive, and sand from fruit-growing bag paper, which easily cause blockage of subsequent pulping equipment and affect the purity of pulp. In addition, ordinary pulping equipment cannot effectively dissipate fruit-growing bag paper with added wet strength agents, resulting in incomplete fiber dissociation and poor quality of recycled pulp.

[0005] To solve the above problems, the present invention adopts the following technical solution: A fruit-growing bag paper recycling and processing device, comprising: The pretreatment unit is used to crush and break up the paper material layer by layer, and expose the iron wire from the paper material. The multi-stage crushing, screening and disintegration unit is located below the pretreatment unit. The multi-stage crushing, screening and disintegration unit is used to crush the paper material into fine fragments in multiple stages and to pre-disintegrate the paper material in multiple stages to gradually disintegrate the wet strength agent in the paper material and to remove the exposed iron wires in the paper material through multi-stage screening. The magnetic impurity removal unit is located below the multi-stage crushing, screening and disintegration unit. The magnetic impurity removal unit is used to adsorb and remove residual iron wires in the fine crushed material. The mixing and impurity removal unit is located on the discharge side of the magnetic impurity removal unit. The mixing and impurity removal unit is used to mix fine materials with water to form a thin slurry, and to perform final decomposition and remove impurities from the thin slurry to obtain a qualified thin slurry.

[0006] The technical solution adopted in this invention can achieve the following beneficial effects: 1. This invention exposes more than 98% of the iron wires in the paper pulp through a pretreatment unit. The iron wires are then removed through a multi-stage crushing, screening, and magnetic impurity removal unit, achieving a 100% removal rate. In addition, a stirring, screening, and impurity removal unit is used to remove 98% of the non-magnetic impurities (such as adhesives, sand, plastic film, etc.) from the paper pulp, ensuring that the purity of the recycled pulp meets the standards. It can directly replace part of the virgin pulp in papermaking, resulting in high resource utilization. 2. This invention uses a multi-stage crushing, screening and decomposition unit to pre-spray decomposition agent, and then uses a stirring and decomposition unit to perform final decomposition, which makes the wet strength agent in the paper material degrade more thoroughly, with a fiber decomposition rate of ≥96%. At the same time, it eliminates the need for independent decomposition equipment, making the whole machine structure more compact, reducing energy consumption by 35%, and making the processing process more efficient. It is suitable for the large-scale recycling and processing of waste fruit-growing bag paper in orchards. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0008] Figure 1 This is a schematic front cross-sectional view of the overall structure disclosed in some embodiments of this application; Figure 2 yes Figure 1 Enlarged structural diagram at point A; Figure 3 yes Figure 2 Enlarged structural diagram at point D; Figure 4 yes Figure 1 Enlarged structural diagram at point B; Figure 5 yes Figure 1 Enlarged structural diagram at point C; Figure 6 This is a front cross-sectional view of the stirring, clearing, and decontamination unit disclosed in some embodiments of this application; Figure 7 This is a top view of the first sieve plate disclosed in some embodiments of this application; Figure 8 This is a top view of the fifth guide vane disclosed in some embodiments of this application; Figure 9 This is a schematic front view of the overall structure disclosed in some embodiments of this application.

[0009] In the picture: 100 - Pre-treatment unit; 110 - Pre-compression roller; 120 - Raised strip; 200 - Multi-stage crushing, screening, and dispersing unit; 210 - Primary crushing and screening mechanism; 211 - First diverter seat; 2111 - First buffer bar; 212 - First crushing roller; 2121 - Movable groove; 2122 - Knife holder; 2123 - First elastic element; 213 - First blade; 214 - First screen plate; 2141 - First screen mesh; 2142 - First narrow groove; 215 - First vibration assembly; 2151 - First rotating shaft; 2152 - First cam; 216 - Guide rod; 217 - Second elastic element; 218 - First return pipe; 219 - First wire collection pipe; 220-Second crushing and screening mechanism; 221-Second diverter seat; 2211-Second buffer bar; 222-Second crushing roller; 223-Second blade; 224-Second screen plate; 2241-Second screen mesh; 2242-Second narrow groove; 225-Second vibration assembly; 2251-Second rotating shaft; 2252-Second cam; 226-Second return pipe; 227-Second wire collecting pipe; 230-First-stage spraying mechanism; 231-First connecting pipe; 232-First nozzle; 240-Second-stage spraying mechanism; 241-Second connecting pipe; 242-Second nozzle; 300 - Magnetic impurity removal unit; 310 - Rotating roller; 320 - High-strength magnetic roller; 330 - Conveyor belt; 340 - Partition plate; 400-Mixing and cleaning unit; 410-Mixing tank; 411-Water injection pipe; 412-Mixing agent addition pipe; 413-Exhaust pipe; 414-Discharge pipe; 415-Second support leg; 420-Mixing mechanism; 421-First drive component; 422-Mixing shaft; 423-Mixing rod; 430-Filter screen; 431-Slag discharge pipe; 440-Light slag flotation mechanism; 441-Aeration assembly; 4411-Aeration pump; 4412-Aeration pipe; 4413-Gas distributor; 442-Slag scraper assembly; 4421-Second drive component; 4422-Bevel gear section; 44221-First bevel gear; 44222-Second bevel gear; 4423-Sleeve; 4424-Slag scraper; 4425-Light slag guide pipe; 4426-Wall scraper rod; 500 - Processing box; 510 - Feed hopper; 520 - First guide plate; 530 - Second guide plate; 540 - Third guide plate; 550 - Fourth guide plate; 560 - Fifth guide plate; 561 - Diverting plate; 562 - Abutment block; 563 - Telescopic rod; 564 - Third elastic element; 570 - Conveying pipe; 580 - Third wire collecting pipe; 590 - First support leg; 600 - Lifting mechanism; 610 - Lifting cylinder; 620 - Third driving component; 630 - Lifting shaft; 640 - First spiral auger; 650 - Second spiral auger; 700-Slurry Pump. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below.

[0011] The inventive concept of this application is described here: Currently, the amount of waste fruit-growing bag paper generated by orchards in China is enormous each year. In most areas, it can only be disposed of through simple landfill or open-air burning. This not only results in a huge waste of high-quality virgin wood pulp fiber resources, but also causes environmental problems such as soil pollution and air pollution, which does not meet the policy requirements for green agricultural development and solid waste resource utilization.

[0012] Existing waste paper recycling and processing equipment has many shortcomings: First, it cannot efficiently separate impurities such as iron wire, adhesive, and sand embedded in fruit bag paper, which can easily cause blockage of subsequent pulping equipment and affect the purity of the pulp. Second, ordinary pulping equipment cannot effectively dissipate fruit bag paper with added wet strength agents, resulting in incomplete fiber dissociation and poor quality of recycled pulp. Third, the processing process is fragmented, lacking an integrated device that combines crushing, impurity removal, dissipation, and purification, resulting in low processing efficiency, high energy consumption, and difficulty in achieving large-scale continuous operation.

[0013] Based on this, the inventors have provided a fruit-growing bag paper recycling and processing device that can efficiently separate impurities such as iron wire, adhesive, and sand from the fruit-growing bag paper, and effectively dissolve the wet strength agent. The fiber dissociation is thorough, so that the purity of the recycled pulp meets the standards. Furthermore, by integrating crushing, impurity removal, dissolution, and purification into one continuous operation, it eliminates the need for manual transfer. The processing efficiency is more than 60% higher than that of traditional decentralized equipment, and energy consumption is reduced by 30%. It is suitable for the large-scale recycling and processing of waste fruit-growing bag paper in orchards.

[0014] The following is in conjunction with the appendix Figures 1 to 9 The present application provides a detailed description of a fruit-growing bag paper recycling and processing device through specific embodiments and application scenarios.

[0015] Reference Figure 1 A fruit-growing bag paper recycling and processing device includes: a pretreatment unit 100, a multi-stage crushing, screening and disintegration unit 200, a magnetic impurity removal unit 300 and a stirring disintegration and impurity removal unit 400; Specifically, refer to Figures 1 to 5The recycling and processing device also includes a processing tank 500, a lifting mechanism 600, and a slurry pump 700. Inside the processing tank 500, from top to bottom, are arranged a pretreatment unit 100, a multi-stage crushing, screening, and dispersing unit 200, and a magnetic impurity removal unit 300. The lifting mechanism 600 is connected to one side of the processing tank 500, corresponding to the pretreatment unit 100 and the multi-stage crushing, screening, and dispersing unit 200. The discharge end of the stirring, dispersing, and impurity removal unit 400 is connected to a pipeline, on which the slurry pump 700 is installed. A feed hopper 510 is installed on the top of the processing tank 500, located above the pretreatment unit 100. The inner walls on both sides of the processing tank 500 between the pretreatment unit 100 and the multi-stage crushing, screening, and dispersing unit 200 are inclined. A funnel-shaped first guide plate 520 is provided, and a fifth guide plate 560 is rotatably arranged on the side wall of the processing box 500 located between the multi-stage crushing and screening unit 200 and the magnetic impurity removal unit 300. The processing box 500 is connected to the stirring, screening and impurity removal unit 400 through a conveying pipe 570. The lower part of the processing box 500 is funnel-shaped, and a third iron wire collecting pipe 580 is installed at the bottom of the processing box 500 for discharging the residual iron wire adsorbed by the magnetic impurity removal unit 300. First support legs 590 are installed on both sides of the lower part of the processing box 500 to support the processing box 500. Preferably, at least four first support legs 590 are provided and distributed in a rectangular array on both sides of the lower part of the processing box 500.

[0016] The pretreatment unit 100 is used to crush and break up the paper material layer by layer, and expose the iron wire from the paper material. Specifically, the pre-treatment unit 100 pre-compresses and disperses the paper material (i.e. waste fruit-bearing bag paper), so that the originally compacted paper clumps are completely flattened, stretched, and broken into layers. It also quickly peels off the paper layers of deeply buried paper clumps and tangled fine iron wires, accelerating the exposure and sorting of the iron wires. This results in an iron wire exposure rate of over 98%, and the paper material as a whole is flat and loose in sheet form. This not only avoids the loose paper material from clogging the subsequent channels, but also greatly optimizes the iron wire separation efficiency of the multi-stage crushing, screening, and dispersing unit 200.

[0017] The multi-stage crushing, screening and disintegration unit 200 is located below the pretreatment unit 100. The multi-stage crushing, screening and disintegration unit 200 is used to crush the paper material into fine fragments in multiple stages and to pre-disintegrate the paper material in multiple stages to gradually disintegrate the wet strength agent in the paper material and to screen and remove the exposed iron wires in the paper material in multiple stages. Specifically, refer to Figure 1The multi-stage crushing, screening, and defragmentation unit 200 separates qualified fine fragments, most of the iron wire, and unqualified paper material. Qualified fine fragments and some unscreened residual iron wire enter the magnetic impurity removal unit 300. Most of the iron wire enters the iron wire collection box after screening. Unqualified paper material is transported back to the pretreatment unit 100 and the multi-stage crushing, screening, and defragmentation unit 200 via the lifting mechanism 600 for secondary or even multiple cycles of crushing until all the paper material is crushed into qualified fine fragments. The entire process is automated and closed-loop, requiring no manual intervention. Iron wire is discharged and collected separately, eliminating the problem of iron wire circulating with unqualified paper material and damaging the blades. At the same time, it ensures the uniformity of the fine fragments and enhances the dual effect of impurity removal and crushing. Furthermore, the multi-stage pre-defragmentation of the paper material breaks down the wet strength agent structure. Combined with the repeated kneading action of the cyclic crushing, the unqualified paper material continues to contact the defragmenting agent during the cyclic re-crushing process, achieving gradient pre-defragmentation and completely solving the problem of difficult dissociation of high wet strength paper material.

[0018] The magnetic impurity removal unit 300 is located below the multi-stage crushing, screening and disintegration unit 200. The magnetic impurity removal unit 300 is used to adsorb and remove residual iron wires in the fine crushed material. Specifically, the magnetic impurity removal unit 300 adsorbs and removes residual iron wires in the fine crushed material, and then the fine crushed material is transported to the stirring and clearing impurity removal unit 400 to achieve 100% complete removal of iron wires, preventing any metal impurities from entering the subsequent stirring and clearing impurity removal unit 400. The residual iron wires are discharged from the third iron wire collection pipe 580 for recycling and reuse.

[0019] The stirring, loosening, and impurity removal unit 400 is located on the discharge side of the magnetic impurity removal unit 300. The stirring, loosening, and impurity removal unit 400 is used to stir and mix fine materials with water to form a thin slurry, and to perform final loosening and remove impurities from the thin slurry to obtain a qualified thin slurry.

[0020] Specifically, refer to Figure 1 and Figure 9 The fine pulp and water are mixed into a thin slurry by the stirring and impurity removal unit 400, and a defragmenting agent is added to make the wet strength agent degrade more thoroughly, with a fiber dissociation rate of ≥96% and higher integrity. At the same time, impurities in the thin slurry are removed to obtain qualified thin slurry without retaining qualified pulp fibers, ensuring fiber integrity and recycling rate. The qualified thin slurry is transported to a special chamber of the thickening filter by the slurry pump 700 for concentration. After concentration, another slurry pump transports the qualified slurry with the required concentration and cleanliness to the subsequent recycled papermaking process through pipeline. There is no slurry leakage or dust pollution throughout the process, realizing the harmless and resource-based closed-loop treatment of waste fruit bag paper. The purity of the recycled slurry meets the standards and can directly replace part of the virgin slurry in papermaking, with high resource utilization rate.

[0021] Reference Figure 2In this embodiment, the pretreatment unit 100 includes a pre-pressing roller 110 and a raised strip 120; The preload roller 110 is rotatably set, and multiple raised strips 120 are evenly arranged on the circumference of the preload roller 110.

[0022] Specifically, two pre-pressing rollers 110 are provided, which are horizontally rotating towards each other within the processing box 500. The discharge port of the feed hopper 510 is located between the two pre-pressing rollers 110. The raised strips 120 can be elastic and are arranged in an arc shape. The raised strips 120 on the two pre-pressing rollers 110 are staggered and spaced apart, so there is no alignment collision or interlocking interference during rotation. The top of the raised strips 120 is rounded and blunted to avoid scratching the paper or cutting the wire. Utilizing the continuous squeezing, kneading, and shearing friction generated by the opposing rotation of the two pre-pressing rollers 110, combined with the point-to-surface crushing effect of the staggered raised strips 120, the loose, tightly bound waste fruit bag paper is crushed and flexibly broken up layer by layer. This precisely breaks down the hard adhesive layers formed by glue and moisture between the paper layers, while squeezing out the air, fruit chips, and sand inside the paper clump. The exposed and combed iron wires, with staggered raised strips 120 rotating, directionally move and straighten the iron wires in the gaps of the paper layer, quickly peeling away the deeply buried paper clumps and tangled fine iron wires from the paper layer, achieving an iron wire exposure rate of over 98%. The flexible arc structure of the raised strips 120 also straightens the iron wires, preventing bending and knotting, ensuring smooth subsequent iron wire separation. Furthermore, the spaced compression of the raised strips 120 allows for flexible layering of the entire paper sheet, preventing the paper sheet from adhering to the multi-stage crushing and screening unit 200, facilitating subsequent crushing operations without damaging the pulp fibers, thus ensuring effective subsequent delamination. The fine iron wires are exposed on the surface or edges of the paper sheet and are completely straight, resulting in a flat and loose sheet-like paper sheet. This prevents the loose paper sheet from clogging subsequent channels and significantly optimizes the iron wire separation efficiency of the multi-stage crushing and screening unit 200.

[0023] Reference Figure 1 , Figure 2 and Figure 4 In this embodiment, the multi-stage crushing, screening and dispersing unit 200 includes a primary crushing and screening mechanism 210, a secondary crushing and screening mechanism 220, a primary spraying mechanism 230 and a secondary spraying mechanism 240. The primary crushing and screening mechanism 210 is located below the pretreatment unit 100, the secondary crushing and screening mechanism 220 is located below the primary crushing and screening mechanism 210, the primary spraying mechanism 230 is correspondingly set to the primary crushing and screening mechanism 210, and the secondary spraying mechanism 240 is correspondingly set to the secondary crushing and screening mechanism 220. Specifically, a first guide plate 520 is installed on both sides of the inner wall of the treatment box 500 between the primary crushing and screening mechanism 210 and the pre-compression roller 110, and a primary spraying mechanism 230 is located below the first guide plate 520; a third guide plate 540 is inclinedly arranged on one side of the inner wall of the treatment box 500 between the primary crushing and screening mechanism 210 and the secondary crushing and screening mechanism 220, and a secondary spraying mechanism 240 is located below the third guide plate 540.

[0024] The structure of the primary crushing and screening mechanism 210 is the same as that of the secondary crushing and screening mechanism 220, and the structure of the primary spraying mechanism 230 is the same as that of the secondary spraying mechanism 240. The primary crushing and screening mechanism 210 is used to coarsely crush paper into sheet-like paper and to perform preliminary screening of sheet-like paper, iron wire and unqualified paper; Specifically, the paper material (including a small amount of iron wire wrapped and adhered to the paper material and not pre-separated) is coarsely crushed into 5-8mm sheet paper material through the primary crushing and screening mechanism 210. The sheet paper material enters the secondary crushing and screening mechanism 220. After screening, the iron wire enters the iron wire collection box, which can recover more than 95% of the exposed iron wire (a small portion of the iron wire is cut and enters the secondary crushing and screening mechanism 220). The unqualified paper material (i.e., oversized clumps of paper material and paper balls wrapped with iron wire) is transported back to the pretreatment unit 100 through the lifting mechanism 600 and re-pressed by the pre-pressing roller 110 for cyclic crushing.

[0025] The secondary crushing and screening mechanism 220 is used to crush sheet paper into fine fragments, and to screen the fine fragments, iron wire and unqualified paper again; Specifically, the secondary crushing and screening mechanism 220 finely crushes the sheet paper into fine fragments with a particle size ≤3mm. The qualified fine fragments enter the magnetic impurity removal unit 300. After iron wire screening, they enter the iron wire collection box, which can recover more than 3% of the exposed iron wire and more than 1% of the iron wire that has not been pre-separated. The unqualified paper (i.e., large uncrushed paper particles and paper balls wrapped with iron wire) is transported back to the upper part of the secondary crushing and screening mechanism 220 through the lifting mechanism 600 for secondary or even multiple cycles of crushing until all the paper is crushed into qualified fine fragments, ensuring the uniformity of the fine fragments and enhancing the dual effect of impurity removal and crushing.

[0026] Reference Figure 2 The primary spraying mechanism 230 is used to perform primary pre-disintegration on the paper stock in order to initially disintegrate the wet strength agent in the paper stock. Specifically, the primary spraying mechanism 230 includes a first connecting pipe 231 and a first nozzle 232. The first connecting pipes 231 are horizontally arranged on both sides below the first guide plate 520. The first connecting pipes 231 are connected to the inner wall of the treatment tank 500. One end of each of the two first connecting pipes 231 penetrates the treatment tank 500 and is connected together, and is connected to a dissolving agent storage tank (not shown) via a pipe. A micro booster pump (not shown) is installed on the pipe. Multiple first nozzles 232 are installed on opposite sides of the two first connecting pipes 231. Preferably, the first nozzle 232 can be a wide-angle atomizing nozzle. The 232-directional spray system faces the paper material's falling path, eliminating spray dead zones. Spraying employs a quantitative intermittent spraying mode, with the spray volume controlled at 0.1% of the paper material's weight. The sprayed disintegrant is a fine mist that evenly adheres to the surface of the pre-compressed paper material. The primary crushing and screening mechanism 210 tears and shreds the paper material, allowing the disintegrant to initially contact and penetrate the paper layer. This softens the wet strength binder layer in advance, disrupting the wet strength molecular structure within the paper material, achieving primary pre-disintegrant treatment. This lays the foundation for deeper penetration in the subsequent fine crushing stage. Simultaneously, the atomized spraying prevents the paper material from becoming excessively soft and sticking to the equipment, and does not affect wire separation or coarse crushing operations.

[0027] The secondary spraying mechanism 240 is used to perform secondary pre-decomposition on the sheet paper material to further decompose the wet strength agent in the sheet paper material; Specifically, refer to Figure 4 The secondary spraying mechanism 240 includes a second connecting pipe 241 and a second nozzle 242. The second connecting pipes 241 are horizontally arranged on both sides below the third guide plate 540. The second connecting pipes 241 are connected to the inner wall of the processing box 500, and their connection structure is consistent with that of the first connecting pipe 231. Multiple second nozzles 242 are installed on opposite sides of the two second connecting pipes 241. Preferably, the second nozzles 242 are wide-angle atomizing nozzles, facing the path of the falling sheet paper, eliminating spray dead zones. The spraying adopts a continuous micro-spraying mode, and the spray volume is controlled to be the weight of the paper. At 0.1%, the secondary crushing and screening mechanism 220 rapidly tears and shreds the paper material, allowing the defragmenting agent to quickly penetrate into the interior of the layered paper fibers, further disintegrating the wet strength agent structure. Combined with the repeated kneading action of the circulating crushing, large particles of paper material are continuously in contact with the defragmenting agent during the circulating re-crushing process, achieving gradient pre-defragmentation and completely solving the problem of difficult dissociation of high wet strength paper material. The spray volume at this stage is controllable, preventing water accumulation inside the cavity and paper material sticking to the screening cylinder. At the same time, the defragmenting agent acts in advance, significantly shortening the defragmentation time of the subsequent stirring, defragmentation, and impurity removal unit 400, and improving the overall processing efficiency.

[0028] Reference Figure 1 , Figure 4 and Figure 5 A fifth guide plate 560 is rotatably arranged between the secondary crushing and screening mechanism 220 and the magnetic impurity removal unit 300.

[0029] Specifically, the qualified fine fragments and residual iron wires are guided to the magnetic impurity removal unit 300 through the fifth guide plate 560. The fifth guide plate 560 guides and disperses the qualified fine fragments and residual iron wires, so that the magnetic impurity removal unit 300 can adsorb and remove the residual iron wires in the fine fragments.

[0030] Reference Figure 2 and Figure 3 In this embodiment, the primary crushing and screening mechanism 210 includes a first diverter seat 211, a first crushing roller 212, a first blade 213, a first screen plate 214, and a first vibration assembly 215. The first diverter seat 211 is located directly below the pre-compression roller 110. The first crushing roller 212 is rotatably disposed below the first diverter seat 211. The first crushing roller 212 is uniformly slidably disposed with a plurality of first blades 213 along its circumference. The first screen plate 214 is slidably disposed below the first crushing roller 212. The first screen plate 214 is inclined. The higher end of the first screen plate 214 abuts against the first vibration component 215. Specifically, the first diverter seat 211 is located directly below the intersection of the two pre-compression rollers 110. The longitudinal section of the first diverter seat 211 is triangular, with rounded corners. Two first connecting pipes 231 are located on both sides of the first diverter seat 211, and the first nozzle 232 faces the inclined surface of the first diverter seat 211. The first crushing rollers 212 are horizontally rotatably arranged on both sides below the first diverter seat 211. The two ends of the first crushing rollers 212 are rotatably connected to the inner wall of the processing box 500. The first blades 213 can move radially along the first crushing rollers 212. The two first crushing rollers 212 rotate towards each other, and the first blades 213 are staggered. A constant working gap of 2-3mm is maintained between the first blades 213 on the two first crushing rollers 212. They do not touch each other to cut, but rely on the tearing and crushing force generated by the opposite rotation of the two first crushing rollers 212. The shearing force generated by the interlacing of the first blades 213 tears and shreds the soft paper material. The gap is reserved to avoid hard friction and collision wear between the first blades 213, while ensuring that the paper material is smoothly rolled into the tear. Only when encountering hard foreign objects such as iron wire, the first blades 213 retract radially by 1-2mm to further expand the clearance and completely avoid hard impact. The paper material is dispersed on the side of the two first crushing rollers 212 that are far apart from each other by the first diverter seat 211, so that the exposed iron wire can fall more easily from the gap between the first blades 213 onto the first screen plate 214. The paper material is torn and shredded by the rotation of the first crushing rollers 212 after falling onto the first blades 213. The processing box 500 has a first return port at the lower end of the first screen plate 214, and the lower end of the first screen plate 214 is rotatably connected to the first return port.

[0031] Reference Figure 2 Multiple first buffer strips 2111 are evenly arranged on the inclined sides of the first diverter seat 211. The first buffer strips 2111 buffer and guide the falling paper material, prolonging the time the paper material stays on the first diverter seat 211, so that the desiccant can better adhere to the surface of the paper material.

[0032] Reference Figure 2 and Figure 4 A second guide plate 530, which is connected to the inner wall of the processing box 500, is installed between the first crushing roller 212 and the first screen plate 214. The second guide plate 530 is inclined and is used to guide the coarsely crushed material to the higher end of the first screen plate 214. A third guide plate 540, which is connected to the inner wall of the processing box 500, is installed below the first screen plate 214. The third guide plate 540 is inclined and is used to guide the sheet paper material to the secondary crushing and screening mechanism 220.

[0033] Reference Figure 2 and Figure 3 The first blade 213 is used to coarsely crush the paper into sheet-like pieces. Specifically, the first crushing roller 212 is evenly provided with multiple movable grooves 2121 along its circumference. A blade holder 2122 is slidably arranged in the movable groove 2121. The first blade 213 is installed on the blade holder 2122. A first elastic element 2123 is connected between the bottom of the movable groove 2121 and the blade holder 2122. The first elastic element 2123 is preferably a spring. When the first blade 213 comes into contact with hard foreign objects such as thin iron wire, the first blade 213 can make a radial slight retraction of 1-2mm with the blade holder 2122. By retraction, it avoids the hard impact of the iron wire. After the external force disappears, it quickly resets and does not affect the paper shredding operation.

[0034] Reference Figure 2 , Figure 3 and Figure 7 The first sieve plate 214 is used for preliminary screening of sheet paper, iron wire and unqualified paper; Specifically, a mounting plate is horizontally installed at the higher end of the first sieve plate 214, and the mounting plate is slidably connected to the inner wall of the processing box 500. A first screen 2141 is installed on the upper part of the first sieve plate 214, and the aperture of the first screen 2141 is uniformly set to 8mm. Multiple first narrow grooves 2142 are opened at the lower part of the first sieve plate 214. The diameter of the binding wire matching the fruit bag paper is usually 0.3-0.5mm, and the finished length of a single wire is 4-6cm. It is straight and rigid. The wire cannot be bent or deformed; its length far exceeds the 8mm sieve aperture, and after pre-compression, it is stretched and straight, unable to pass through the 8mm sieve aperture. It will be directly intercepted by the first sieve 2141, achieving efficient pre-separation of sheet paper and exposed wire. The first narrow groove 2142 is 6cm long and 0.5mm wide. A first return pipe 218 is provided on the processing box 500 at the first return port to guide the unqualified paper to the lifting mechanism 600; processing box 5 A first wire collecting pipe 219 is provided below the first narrow groove 2142 on the processing box 500 to guide the wire to the wire collecting box, which can recover more than 95% of the exposed wire. A sliding groove is provided on the inner wall of the processing box 500 at the end corresponding to the height of the first screen plate 214. Multiple guide rods 216 are vertically installed in the sliding groove. The guide rods 216 pass through the mounting plate and slide with the mounting plate. A second elastic element 217 is connected between the top of the mounting plate and the top of the sliding groove and is sleeved on the outer surface of the guide rod 216. The second elastic element 217 is preferably a spring. The second elastic element 217 cooperates with the first vibration component 215 to reset the first screen plate 214, ensuring efficient separation of sheet paper, wire and unqualified paper, and also has a vibration and anti-clogging effect. The guide hole on the mounting plate is larger than the diameter of the guide rod 216, so that the mounting plate can rotate slightly around the lower end of the first screen plate 214 without interfering with the guide rod 216.

[0035] Reference Figure 2 The first vibration component 215 is used to vibrate the first screen plate 214 to quickly screen sheet paper, wire and unqualified paper.

[0036] Specifically, the first vibration component 215 vibrates the bottom of the mounting plate of the first screen plate 214.

[0037] The first vibration assembly 215 includes a first rotating shaft 2151 and a first cam 2152. The first rotating shaft 2151 is horizontally rotatably disposed below the mounting plate of the first screen plate 214. Multiple first cams 2152 are mounted on the first rotating shaft 2151, and the first cams 2152 abut against the bottom of the mounting plate of the first screen plate 214.

[0038] Reference Figure 4 and Figure 7In this embodiment, the secondary crushing and screening mechanism 220 includes a second diverter seat 221, a second crushing roller 222, a second blade 223, a second screen plate 224, and a second vibration assembly 225, and its structure is consistent with that of the primary crushing and screening mechanism 210. The lower end of the third guide plate 540 is located above the second diverter seat 221, and two second connecting pipes 241 are respectively located on both sides of the second diverter seat 221. The second nozzle 242 faces the inclined surface of the second diverter seat 221. The second crushing roller 222 is horizontally rotatably arranged on both sides below the second diverter seat 221. The two ends of the second crushing roller 222 are rotatably connected to the inner wall of the processing box 500. The second blade 223 can move along the second diverter seat 221. The radial movement of the two crushing rollers 222; the two second crushing rollers 222 rotate in opposite directions, and the second blades 223 are staggered. A constant working gap of 1.5-2mm is maintained between the second blades 223 on the two second crushing rollers 222. The second blades 223 do not touch or bite, and rely on the tearing force of the opposite rotation and the staggered shearing force to crush the paper material; when the second blade 223 comes into contact with hard foreign objects such as iron wire, the second blade 223 retracts radially towards the roller center by 1-2mm, temporarily widening the gap between the rollers to avoid the impact of hard foreign objects. After the foreign object is removed, the spring quickly resets, and the second blade 223 returns to its original position, maintaining the standard working gap. There is no hard contact wear of the blades throughout the process, which takes into account the overall situation. Crushing effect and blade protection; multiple second buffer strips 2211 are evenly arranged on the inclined sides of the second diverter seat 221. The second buffer strips 2211 buffer and guide the falling sheet paper, prolonging the time the sheet paper stays on the second diverter seat 221, so that the dissolving agent can better adhere to the surface of the sheet paper; a fourth guide plate 550 connected to the inner wall of the processing box 500 is installed between the second crushing roller 222 and the second screen plate 224. The fourth guide plate 550 is inclined and is used to guide the finely crushed material to the higher end of the second screen plate 224; a fifth guide plate 560 rotatably connected to the inner wall of the processing box 500 is installed below the second screen plate 224. The guide plate 560 is inclined to guide fine debris and residual iron wire to the magnetic impurity removal unit 300. A second return port is provided at the lower end of the second screen plate 224 on the processing box 500. The lower end of the second screen plate 224 is rotatably connected to the second return port. A mounting plate is horizontally provided at the higher end of the second screen plate 224. The mounting plate is slidably connected to the inner wall of the processing box 500. Its connection structure is the same as that of the first screen plate 214. A second screen 2241 is provided on the upper part of the second screen plate 224. The aperture of the second screen 2241 is uniformly set to 3mm. Multiple second narrow grooves 2242 are provided at the lower part of the second screen 2241. The length of the second narrow groove 2242 is 6cm and the width is 0.The wire is 5mm thick, facilitating wire discharge. A second return pipe 226 is provided on the processing box 500 corresponding to the second return port, used to guide unqualified paper material to the lifting mechanism 600. A second wire collecting pipe 227 is provided on the processing box 500 below the second narrow trough 2242, used to guide the wire to the wire collecting box, capable of recovering more than 3% of exposed wire and more than 1% of unseparated wire. The second vibration assembly 225 includes a second rotating shaft 2251 and a second cam 2252. The second rotating shaft 2251 is horizontally rotatable below the mounting plate of the second screen plate 224. Multiple second cams 2252 are mounted on the second rotating shaft 2251, and the second cams 2252 abut against the bottom of the mounting plate of the second screen plate 224.

[0039] Reference Figure 1 The lifting mechanism 600 includes a lifting cylinder 610, a third driving component 620, a lifting shaft 630, a first spiral auger 640, and a second spiral auger 650. The lifting cylinder 610 is vertically installed on one side of the processing box 500. A partition plate is installed inside the lifting cylinder 610. The first return pipe 218 and the second return pipe 226 are both connected to the lifting cylinder 610, and the connection between the first return pipe 218 and the lifting cylinder 610 is located above the partition plate. The third driving component 620 is vertically installed on the top of the lifting cylinder 610. The third driving component 620 can be a servo motor, and its specific structure and working principle are common knowledge, so they will not be described in detail here. A lifting shaft 630 is vertically rotatably installed inside the lifting cylinder 610. The lifting shaft 630 rotates through the partition plate. The top end of the lifting shaft 630 passes through the lifting cylinder 610 and connects to the output end of the third drive unit 620. A first auger 640 is installed on the lifting shaft 630 above the partition plate, and a second auger 650 is installed on the lifting shaft 630 below the partition plate. A first return pipe is installed on one side of the top of the lifting cylinder 610 to transport the defective paper material returned by the first auger 640 back to the feed hopper 510. A second return pipe is installed on the side of the lifting cylinder 610 below the partition plate. The second return pipe extends to the top of the second diverter seat 221 to transport the defective paper material returned by the second auger 650 back to the top of the second diverter seat 221, so as to perform secondary or even multiple cycles of crushing on the defective paper material.

[0040] Reference Figure 1 and Figure 9In this embodiment, one end of the shafts of one pre-pressing roller 110, the first crushing roller 212, and the second crushing roller 222 can all pass through the processing box 500 and be connected to a drive motor (not shown). The other end of the shafts of the other pre-pressing roller 110, the first crushing roller 212, and the second crushing roller 222 can all pass through the processing box 500 and be connected to gears. Through the transmission of the two gears, the two pre-pressing rollers 110, the first crushing roller 212, and the second crushing roller rotate in opposite directions. The first crushing roller 212 can be connected to the first rotating shaft 2151 via a synchronous belt assembly, and the second crushing roller 222 can be connected to the second rotating shaft 2251 via a synchronous belt assembly. The synchronous belt assembly is a combination of a synchronous pulley and a synchronous belt (the same below). Preferably, the synchronous pulley can be a toothed pulley, and the synchronous belt can be a toothed belt. The specific structure and working principle of the toothed pulley and the toothed belt are common knowledge, so they will not be described in detail here. The gear and synchronous belt assembly can be covered with a shell (not shown) to protect the gear and synchronous belt assembly.

[0041] Reference Figure 5 In this embodiment, the magnetic impurity removal unit 300 includes a rotating roller 310, a strong magnetic roller 320, a conveyor belt 330, and a partition 340; Rotating roller 310 and strong magnetic roller 320 are rotatably arranged below the fifth guide plate 560. A conveyor belt 330 is wound between rotating roller 310 and strong magnetic roller 320. A stirring and decontamination unit 400 is correspondingly arranged at the discharge end of conveyor belt 330. Multiple partitions 340 are arranged on conveyor belt 330, and partitions 340 can abut against the fifth guide plate 560.

[0042] Specifically, the rotating roller 310 and the strong magnetic roller 320 are horizontally rotated and positioned in the lower part of the processing box 500. The strong magnetic roller 320 is located near the conveying pipe 570. The strong magnetic roller 320 is existing equipment, and its specific structure and working principle are common knowledge, so they will not be described in detail here. The strong magnetic roller 320 adsorbs residual iron wires (single wire diameter 0.3-0.5mm, length 1mm-10mm) and fine iron slag (particle size 0.1mm-3mm) in the fine crushed material onto the conveyor belt 330. The fine crushed material enters the stirring, clearing, and impurity removal unit 4 through the conveying pipe 570. 00, residual iron wire and fine iron slag are conveyed by conveyor belt 330 to the top of the third iron wire collection pipe 580. The magnetic force of the strong magnetic roller 320 disappears, the iron wire loses its adsorption force, and automatically falls off by its own gravity, achieving 100% complete removal of iron wire and preventing any metal impurities from entering the subsequent stirring and decontamination unit 400. The residual iron wire is discharged from the third iron wire collection pipe 580 into the iron wire collection box for recycling and reuse. Preferably, multiple sets of magnetic decontamination units 300 can be set to perform multiple magnetic screenings on the fine fragments to better remove residual iron wire and fine iron slag.

[0043] One end of the rotating roller 310 can pass through the processing box 500 and be connected to the drive motor (not shown in the figure). The other end of the rotating roller 310 and the rotating shaft of the strong magnetic roller 320 can both pass through the processing box 500 and be connected by a synchronous belt assembly.

[0044] Among them, reference Figure 5 and Figure 8 In this embodiment, the fifth guide plate 560 is inclined and a plurality of diverter plates 561 are provided on the fifth guide plate 560. An abutment block 562 is installed at the bottom of the lower end of the fifth guide plate 560, and the abutment block 562 can abut and cooperate with the partition plate 340.

[0045] Specifically, the higher end of the fifth guide plate 560 is rotatably connected to the inner wall of the processing box 500. The diverter plate 561 is triangularly arranged to disperse the fine materials and prevent them from accumulating on the conveyor belt 330, which would affect the adsorption effect of the strong magnetic roller 320. The lower part of the abutment block 562 and the top of the partition plate 340 are inclined to each other, so that when the partition plate 340 passes the abutment block 562, it can drive the fifth guide plate 560 to vibrate upward, further dispersing the fine materials.

[0046] Reference Figure 5 A connecting seat is hinged between the bottom of the fifth guide plate 560 and the inner wall of the treatment box 500. A telescopic rod 563 is installed between the two connecting seats. A third elastic element 564 is sleeved on the outer surface of the telescopic rod 563 between the two connecting seats. The third elastic element 564 is preferably a spring. The fifth guide plate 560 is reset so that the fifth guide plate 560 reciprocates under the action of the partition 340, thereby improving the dispersion effect.

[0047] Reference Figure 1 and Figure 6 In this embodiment, the stirring, dredging and impurity removal unit 400 includes a stirring tank 410, a stirring mechanism 420, a filter screen 430 and a light slag flotation mechanism 440. The feed end of the mixing tank 410 is connected to the discharge side of the magnetic impurity removal unit 300. A stirring mechanism 420 is provided in the upper part of the mixing tank 410, a multi-layer filter screen 430 is provided in the lower part of the mixing tank 410, and a light slag flotation mechanism 440 is also provided in the mixing tank 410. Specifically, the feed end of the mixing tank 410 is connected to the conveying pipe 570; preferably, the mixing tank 410 adopts a constant temperature heating structure. The mixing tank 410 is double-layered, with the inner layer directly contacting the slurry and water, and the outer layer being a heat insulation and protective layer. A sealed water bath jacket cavity is formed between the inner and outer layers. The jacket cavity is filled with pure water as a heat conduction medium. Multiple sets of electric heating tubes are evenly arranged in the jacket cavity to indirectly heat the slurry in the tank through the water bath. The mixing tank 410 has a built-in high-precision waterproof temperature probe (not shown in the figure). The probe is immersed in the middle position below the slurry liquid surface and away from the heating area to monitor the actual temperature of the slurry in the tank in real time. The signal is connected to an external PLC temperature control system to realize automatic temperature control. After the electric heating tubes are started, they first heat the water bath medium in the jacket cavity, and then evenly conduct heat to the slurry in the tank through the water bath. The temperature rise is slow and the heating is uniform. The constant temperature environment can accelerate the penetration of the disintegrating agent and further improve the fiber dissociation speed.

[0048] Reference Figure 6 The top of the mixing tank 410 is equipped with a water injection pipe 411, a defragmenting agent addition pipe 412, and an exhaust pipe 413. The water injection pipe 411 is used to inject clean water, the defragmenting agent addition pipe 412 is used to add defragmenting agent, and the exhaust pipe 413 is used to balance the air pressure inside the mixing tank 410. The total feeding ratio of the three stages is controlled as paper material: clean water: total defragmenting agent = 1:8:0.002 (0.1% for coarse crushing pre-spray + 0.1% for fine crushing pre-spray + 0.02% for final replenishment in the tank). When water is initially added, the clean water first fills the lower cavity of the mixing tank 410, naturally submerging the entire height of the multi-layer filter screen 430, until the liquid level reaches the preset working liquid level. At this time, the water above and below the filter screen 430 is completely connected, and there is no problem of the upper and lower water bodies being separated or the clear water below being stagnant. The filter screen 430 only serves as a medium for intercepting impurities and does not block the free convection of water. The bottom of the mixing tank 410 is set in a funnel shape. A discharge pipe 414 is installed at the bottom of the mixing tank 410. A solenoid valve is installed on the discharge pipe 414. The discharge pipe 414 is connected to the slurry pump 700 through a pipe. Second support legs 415 are installed on both sides of the bottom of the mixing tank 410 to support the mixing tank 410. Preferably, there are 4 second support legs 415, which are distributed in a rectangular array on both sides of the bottom of the mixing tank 410.

[0049] The mixing mechanism 420 is used to mix fine materials with water to form a thin slurry and to perform final decomposition. Specifically, the stirring mechanism 420 is set to a stirring time of 20-25 minutes, and the constant temperature heating structure stably maintains the temperature inside the tank at 45-60℃, ensuring that the wet strength agent is fully degraded and the fibers are completely dissociated. The stirring time and the temperature inside the tank can be flexibly adjusted according to the actual wet strength agent content and the particle size of the fine material. After the stirring and dissolution reaches the set time, the fiber dissociation meets the standard, and the impurities are separated, the discharge pipe 414 is automatically opened. The qualified slurry is synchronously transported to the special cavity of the concentration filter screen connected in series by the subsequent slurry pump 700 under negative pressure suction, without the need for additional waiting for transfer, realizing the continuous operation of dissolution, purification, discharge, and concentration.

[0050] The multi-layer filter screen 430 is used to remove heavy and suspended impurities from the slurry to obtain a qualified slurry. Specifically, refer to Figure 6 In this embodiment, a three-layer inclined filter screen 430 is used, with the pore size of the filter screen 430 decreasing from top to bottom. A slag discharge pipe 431 is installed on the stirring tank 410 at the lower end of the filter screen 430. The slag discharge pipe 431 is equipped with a solenoid valve and operates synchronously with the wet-strength dissolution and light slag flotation processes. It specifically intercepts various non-magnetic heavy impurities and large-diameter fiber clumps generated during the dissolution process, without adsorbing qualified pulp fibers, ensuring fiber recovery rate and pulp purity. The stirring mechanism 420 is located above the upper filter screen 430. The upper filter screen 430 mainly intercepts large-particle impurities with a particle size >2mm, including incompletely broken large-diameter pulp clumps, coarse fruit scraps remaining from the orchard, large sand and gravel particles, tightly adhered adhesive clumps, large pieces of paper impurities that have not been completely peeled off, and a very small portion of paper residue with excessive particle size missed in the previous process. This prevents large-particle impurities from entering the lower filter screen 430 at the source, extending the overall lifespan of the filter screen 430. The middle layer filter (430) intercepts medium-sized suspended impurities (0.85mm-2mm), including fine sand particles, broken adhesive fragments, medium-sized undisintegrated paper clumps, fiber bundles, and lightweight settling impurities, further purifying the pulp and ensuring smooth water circulation within the tank. This prevents the accumulation of medium-sized impurities from affecting the penetration of the disintegrating agent and the efficiency of fiber disintegration. The lower layer filter (430) precisely intercepts fine suspended impurities (0.425mm-0.85mm), including fine sand powder, fine adhesive residue, extremely fine undisintegrated fiber bundles, and fine impurity particles generated during the disintegration process. This thoroughly filters out insoluble fine impurities in the diluted pulp. The pulp after gradient filtration through the three layers of 430 filters is free of large particles and fine suspended impurities, meeting the cleanliness standards. It can then directly enter the dedicated chamber of the subsequent thickening filter for concentration control, ensuring the quality of the final recycled pulp while not retaining qualified pulp fibers, thus guaranteeing fiber integrity and recovery rate.

[0051] The light slag flotation unit 440 is used to remove light impurities from the thin slurry.

[0052] Reference Figure 6 In this embodiment, the stirring mechanism 420 includes a first driving member 421, a stirring shaft 422, and a stirring rod 423; The first driving component 421 is installed in the mixing tank 410. The output end of the first driving component 421 is connected to the stirring shaft 422. The stirring shaft 422 is rotatably disposed in the upper part of the mixing tank 410. Multiple stirring rods 423 are installed on the stirring shaft 422.

[0053] Specifically, the first driving component 421 is vertically installed on the top of the mixing tank 410. The first driving component 421 can be a servo motor. Its specific structure and working principle are common knowledge, so they will not be described in detail here. The stirring shaft 422 is vertically rotated in the upper part of the mixing tank 410. The speed of the stirring shaft 422 is stably controlled at 60-80 r / min. Low-speed stirring can avoid pulp fiber breakage.

[0054] Reference Figure 6 An L-shaped bracket is installed on the top of the mixing tank 410, and the first drive component 421 is vertically installed on the top of the bracket, reserving space for the installation of the light slag flotation mechanism 440.

[0055] Reference Figure 6 In this embodiment, the light slag flotation mechanism 440 includes an aeration component 441 and a slag scraping component 442; The aeration component 441 is located in the lower part of the mixing tank 410 and below the multi-layer filter screen 430, while the sludge scraping component 442 is located in the upper part of the mixing tank 410. Specifically, the aeration component 441 is located below the lower filter screen 430, and the sludge scraping component 442 is located above the stirring rod 423.

[0056] The aeration component 441 is used to adsorb light impurities in the slurry to form scum on the liquid surface. Specifically, refer to Figure 6 The aeration component 441 includes an aeration pump 4411, an aeration pipe 4412, and a gas distributor 4413. The aeration pipe 4412 is located in the lower part of the mixing tank 410. Multiple micron-sized aeration micropores are evenly distributed on the aeration pipe 4412. The aeration pipe 4412 is connected to the aeration pump 4411 of the external mixing tank 410. The gas distributor 4413 is located between the lower filter screen 430 and the aeration pipe 4412. Its surface is evenly distributed with small guide holes, which are used to further disperse and evenly diffuse the fine bubbles generated by the aeration pipe 4412 to the entire upper layer of the slurry, forming a dense and stable microbubble layer, preventing local bubble aggregation or bubble-free blind spots, and ensuring that light impurities are attached to the bubbles in all directions.

[0057] The rotation of the stirring rod 423 mixes and disperses the fine materials and clean water. Combined with the rising of bubbles in the aeration component 441, a strong lift is generated, which drives the clean water below the filter screen 430 to quickly pass through the pores of the filter screen 430 and flow into the dispersion area above the filter screen 430, where it is fully mixed with the fine materials. The mixed slurry above, under the action of gravity and stirring convection, partially flows back to the area below the filter screen 430, forming a complete water circulation from top to bottom and bottom to top, with no stagnant dead zones in the tank throughout the entire process.

[0058] The scum removal assembly 442 is used to remove scum from the liquid surface.

[0059] Reference Figure 6 In this embodiment, the slag scraping assembly 442 includes a second driving member 4421, a bevel gear part 4422, a sleeve 4423, and a slag scraping plate 4424; The second drive unit 4421 is installed in the mixing tank 410. The output shaft of the second drive unit 4421 is connected to one end of the bevel gear part 4422. The other end of the bevel gear part 4422 is connected to the sleeve 4423. The sleeve 4423 is rotatably disposed outside the mixing shaft 422. Multiple scraper plates 4424 are connected to one end of the sleeve 4423 located inside the mixing tank 410.

[0060] Specifically, the second drive component 4421 is horizontally installed on the top of the mixing tank 410. The second drive component 4421 can be a servo motor. Its specific structure and working principle are common knowledge, so they will not be described in detail here. The sleeve 4423 is rotatably connected to the top of the mixing tank 410. There are 2-4 scraper plates 4424. The outer edge of the scraper plate 4424 fits exactly against the inner wall of the mixing tank 410. The bottom end is submerged 1-2 cm below the surface of the slurry. The rotation speed is stably controlled at 2-3 r / min. The low-speed operation does not disturb the qualified slurry in the lower layer, but only pushes the floating slag on the surface to move in a directional manner.

[0061] Reference Figure 6 The bevel gear section 4422 includes a first bevel gear 44221 and a second bevel gear 44222. The output shaft of the second drive member 4421 is connected to the first bevel gear 44221. The second bevel gear 44222 is mounted on the top of the sleeve 4423. The stirring shaft 422 rotates through the second bevel gear 44222. The first bevel gear 44221 and the second bevel gear 44222 are meshed together.

[0062] Reference Figure 6The slag scraping assembly 442 also includes a light slag guide pipe 4425 and a wall scraper 4426. The light slag guide pipe 4425 is inclinedly arranged on the upper side wall of the mixing tank 410. Its inlet is aligned with the end of the rotation trajectory of the slag scraper 4424, and its outlet is connected to the light slag collection box outside the tank. It relies on gravity to achieve smooth slag sliding down, without slag accumulation or backflow. The wall scraper 4426 is installed at the bottom of the end of the slag scraper 4424 near the inner wall of the mixing tank 410. It can scrape off the fine fragments attached to the upper part of the inner wall of the mixing tank 410. With the cooperation of the aeration assembly 441, the slurry quality is improved.

[0063] In this embodiment, an electrical control cabinet (not shown) is provided on one side of the processing box 500. The electrical control cabinet (not shown) is equipped with a PLC programmable controller and a variable frequency speed control system, which can flexibly adjust the speed, steam temperature and water intake of each unit according to the wet strength agent content and impurity content of the fruit bag paper to achieve automated continuous operation. At the same time, it is equipped with overload protection and blockage alarm devices to improve the overall operational stability and safety of the device and adapt to the needs of long-term large-scale processing. It is also compatible with the recycling and processing of ordinary waste paper, and the equipment has both versatility and practicality.

[0064] Working principle: During use, waste fruit-growing bag paper is fed into the processing box 500 through the feed hopper 510. The pre-pressing rollers 110 rotate in opposite directions, and with the crushing effect of the staggered protrusions 120, the waste fruit-growing bag paper is crushed and gently broken down layer by layer. The crushed paper material falls onto the first crushing roller 212 through the first diverting seat 211. Simultaneously, a disintegrant is sprayed onto the paper material. The two first crushing rollers 212 rotate in opposite directions, causing the first blades 213 to cross and create a shearing force, coarsely crushing the soft paper material into flakes. The flakes fall onto the first screen plate 214 through the second guide plate 530. Qualified flakes fall onto the third guide plate 540 through the first screen 2141. More than 5% of the exposed iron wires fall into the first iron wire collection pipe 219 through the first narrow groove 2142. Unqualified paper material enters the lifting mechanism 600 through the first return pipe 218 and is transported back to the feed hopper 510. Qualified sheet paper material falls onto the second crushing roller 222 through the second diverting seat 221. Simultaneously, a disintegrant is sprayed onto the sheet paper material. The two second crushing rollers 222 rotate in opposite directions, driving the second blades 223 to form a shearing force, thus finely crushing the sheet paper material into fine fragments. The fine fragments fall onto the second screen plate 224 through the fourth guide plate 550. Qualified fine fragments fall onto the fifth guide plate 560 through the second screen 2241. More than 3% of the exposed iron wires and more than 1% of the unfinished paper material are removed from the collection pipe. The pre-separated iron wires fall into the second iron wire collection pipe 227 through the second narrow groove 2242. Unqualified paper material enters the lifting mechanism 600 through the second return pipe 226 and is transported back above the second diverter seat 221. Fine fragments are dispersed by the diverter plate 561 and fall onto the conveyor belt 330. The strong magnetic roller 320 adsorbs residual iron wires and small iron slags from the fine fragments onto the conveyor belt 330. The fine fragments enter the mixing tank 410 through the conveyor pipe 570, while residual iron wires and small iron slags are discharged through the third iron wire collection pipe 580. The first driving component 421 drives the stirring shaft 422 to rotate, thereby rotating the stirring rod 423 to mix and disperse the fine fragments with water. Simultaneously, the aeration pump 44... After startup, microbubbles are continuously generated through aeration pipe 4412. As the bubbles rise, they adsorb light impurities with low density and strong hydrophobicity in the slurry, causing them to float quickly to the surface of the slurry and form a layer of scum. At the same time, the second drive component 4421 drives the first bevel gear 44221 to rotate, which in turn drives the second bevel gear 44222 and the sleeve 4423 to rotate, which in turn drives the scraper plate 4424 to rotate, continuously pushing the scum on the surface towards the inlet of the light scum guide pipe 4425. The scum automatically falls into the light scum collection box along the light scum guide pipe 4425, completing the separation of light impurities. The heavy impurities and suspended impurities in the thin slurry are removed through the multi-layer filter screen 430 to obtain qualified thin slurry.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A fruit-growing bag paper recycling and processing device, characterized in that, include: A pretreatment unit (100) is used to crush and break up the paper material layer by layer and expose the iron wire from the paper material. A multi-stage crushing, screening and disintegration unit (200) is located below the pretreatment unit (100). The multi-stage crushing, screening and disintegration unit (200) is used to crush the paper material into fine fragments in multiple stages and to pre-disintegrate the paper material in multiple stages to gradually disintegrate the wet strength agent in the paper material and to remove the exposed iron wires in the paper material through multi-stage screening. A magnetic impurity removal unit (300) is located below the multi-stage crushing, screening and disintegration unit (200). The magnetic impurity removal unit (300) is used to adsorb and remove residual iron wires in fine crushed materials. The stirring and decontamination unit (400) is located on the discharge side of the magnetic decontamination unit (300). The stirring and decontamination unit (400) is used to stir and mix fine materials with water to form a thin slurry, and to perform final decontamination and remove impurities in the thin slurry to obtain a qualified thin slurry.

2. The fruit-growing bag paper recycling and processing device according to claim 1, characterized in that, The pretreatment unit (100) includes a pre-pressing roller (110) and a raised strip (120). The preload roller (110) is rotatably arranged, and the preload roller (110) is uniformly provided with a plurality of raised strips (120) along its circumference.

3. The fruit-growing bag paper recycling and processing device according to claim 2, characterized in that, The multi-stage crushing, screening and dispersing unit (200) includes a primary crushing and screening mechanism (210), a secondary crushing and screening mechanism (220), a primary spraying mechanism (230) and a secondary spraying mechanism (240). The primary crushing and screening mechanism (210) is located below the pretreatment unit (100), the secondary crushing and screening mechanism (220) is located below the primary crushing and screening mechanism (210), the primary spraying mechanism (230) is correspondingly arranged with the primary crushing and screening mechanism (210), and the secondary spraying mechanism (240) is correspondingly arranged with the secondary crushing and screening mechanism (220). The structure of the primary crushing and screening mechanism (210) is the same as that of the secondary crushing and screening mechanism (220), and the structure of the primary spraying mechanism (230) is the same as that of the secondary spraying mechanism (240). The primary crushing and screening mechanism (210) is used to coarsely crush the paper into sheet-like paper and to perform preliminary screening of the sheet-like paper, iron wire and unqualified paper. The secondary crushing and screening mechanism (220) is used to crush the sheet paper into fine fragments, and to screen the fine fragments, iron wire and unqualified paper again; The primary spraying mechanism (230) is used to perform primary pre-disintegration on the paper stock in order to initially disintegrate the wet strength agent in the paper stock; The secondary spraying mechanism (240) is used to perform secondary pre-disintegration on the sheet paper material to further disintegrate the wet strength agent in the sheet paper material; The unqualified paper material screened by the primary crushing and screening mechanism (210) is transported back to the pretreatment unit (100) through the lifting mechanism (600), and the unqualified paper material screened by the secondary crushing and screening mechanism (220) is transported back to the top of the secondary crushing and screening mechanism (220) through the lifting mechanism (600). A fifth guide plate (560) is rotatably arranged between the secondary crushing and screening mechanism (220) and the magnetic impurity removal unit (300).

4. The fruit-growing bag paper recycling and processing device according to claim 3, characterized in that, The primary crushing and screening mechanism (210) includes a first diverter seat (211), a first crushing roller (212), a first blade (213), a first screen plate (214), and a first vibration assembly (215). The first diverter seat (211) is located directly below the pre-compression roller (110), the first crushing roller (212) is rotatably disposed below the first diverter seat (211), the first crushing roller (212) is evenly slidably disposed with a plurality of first blades (213) along its circumference, the first screen plate (214) is slidably disposed below the first crushing roller (212), the first screen plate (214) is inclined, and the higher end of the first screen plate (214) is abutted against the first vibration component (215). The first blade (213) is used to coarsely crush the paper into sheet-like pieces; The first sieve plate (214) is used for preliminary screening of sheet paper, iron wire and unqualified paper; The first vibration component (215) is used to vibrate the first sieve plate (214) to quickly screen sheet material, iron wire and unqualified paper material.

5. The fruit-growing bag paper recycling and processing device according to claim 3, characterized in that, The magnetic impurity removal unit (300) includes a rotating roller (310), a strong magnetic roller (320), a conveyor belt (330), and a partition (340). The rotating roller (310) and the strong magnetic roller (320) are rotatably disposed below the fifth guide plate (560). A conveyor belt (330) is wound between the rotating roller (310) and the strong magnetic roller (320). A stirring and decontamination unit (400) is correspondingly disposed at the discharge end of the conveyor belt (330). Multiple partitions (340) are disposed on the conveyor belt (330). The partitions (340) can abut against the fifth guide plate (560).

6. The fruit-growing bag paper recycling and processing device according to claim 5, characterized in that, The stirring, dredging and impurity removal unit (400) includes a stirring tank (410), a stirring mechanism (420), a filter screen (430), and a light slag flotation mechanism (440). The feed end of the mixing tank (410) is connected to the discharge side of the magnetic impurity removal unit (300). A stirring mechanism (420) is provided in the upper part of the mixing tank (410), and a multi-layer filter screen (430) is provided in the lower part of the mixing tank (410). A light slag flotation mechanism (440) is also provided in the mixing tank (410). The stirring mechanism (420) is used to mix fine materials with water to form a thin slurry and to perform final decomposition; The multi-layered filter screen (430) is used to remove heavy and suspended impurities from the slurry to obtain a qualified slurry; The light slag flotation mechanism (440) is used to remove light impurities from the slurry.

7. The fruit-growing bag paper recycling and processing device according to claim 6, characterized in that, The stirring mechanism (420) includes a first driving member (421), a stirring shaft (422), and a stirring rod (423). The first driving component (421) is installed on the mixing tank (410). The output end of the first driving component (421) is connected to a stirring shaft (422). The stirring shaft (422) is rotatably disposed in the upper part of the mixing tank (410). Multiple stirring rods (423) are installed on the stirring shaft (422).

8. The fruit-growing bag paper recycling and processing device according to claim 7, characterized in that, The light slag flotation mechanism (440) includes an aeration component (441) and a slag scraping component (442). The aeration component (441) is located in the lower part of the mixing tank (410) and below the multi-layer filter screen (430), while the sludge scraping component (442) is located in the upper part of the mixing tank (410). The aeration component (441) is used to adsorb light impurities in the slurry to form scum on the liquid surface. The scum removal assembly (442) is used to remove scum from the liquid surface.

9. The fruit-growing bag paper recycling and processing device according to claim 8, characterized in that, The slag scraping assembly (442) includes a second drive member (4421), a bevel gear (4422), a sleeve (4423), and a slag scraper (4424). The second drive unit (4421) is installed in the mixing tank (410). The output shaft of the second drive unit (4421) is connected to one end of the bevel gear part (4422). The other end of the bevel gear part (4422) is connected to the sleeve (4423). The sleeve (4423) is rotatably disposed outside the stirring shaft (422). Multiple scraper plates (4424) are connected to one end of the sleeve (4423) located inside the mixing tank (410).

10. The fruit-growing bag paper recycling and processing device according to claim 5, characterized in that, The fifth guide plate (560) is inclined and has multiple diverter plates (561) on it. A stop block (562) is installed at the bottom of the lower end of the fifth guide plate (560), and the stop block (562) can abut against the partition plate (340).

Images