Sludge treatment system in waste paper box recycling production of packing paper box process

Abstract

The utility model discloses a kind of pulp residue treatment systems in waste paper box recycling production packaging paper box process, system includes shell, shell lower portion is equipped with filter section, wastewater buffer section is connected in filter section lower end;There is guide hopper in shell, its bottom is connected with mixing hopper, there is first material passing strip hole in mixing hopper bottom, and the second motor of shell bottom drives mixing shaft and mixing rod stirring in mixing hopper;There are two filter plates in filter section, and outer side wall's push cylinder drives material scraping plate movement, can scrape fiber on filter plate to conveyer belt. Pulp residue, waste paper raw material and water enter system, waste paper is mixed after cutting with pulp residue in mixing hopper, then fall into filter section, and long fiber and short fiber are screened out by upper and lower filter plate classification, respectively by corresponding conveyer belt, wastewater enters buffer section and is discharged. The utility model is by using the above structure, can effectively treat wastewater fiber, realize fiber recycling and reuse, reduce cost, reduce environmental impact.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a pulp residue treatment system in the process of recycling waste cardboard boxes to produce packaging cardboard boxes. Background Technology

[0002] In the process of recycling waste paper boxes to produce packaging cartons, waste disposal has always been a significant issue for the industry. However, the production process generates pulp residue containing adhesives and inorganic matter, while wastewater treatment also produces fine fibers and sludge. These wastes are all classified as general industrial solid waste and cannot be reused on packaging paper production lines; they are typically discharged in liquid or semi-solid form. According to the "Standard for Pollution Control of Storage and Landfill of General Industrial Solid Waste" (GB18599-2020), enterprises must dehydrate and dry these wastes before landfilling them, which incurs significant costs for them annually. Furthermore, the long natural degradation period of these wastes after landfilling also has adverse environmental impacts. Summary of the Invention The technical problem to be solved by this utility model is to provide a pulp residue treatment system in the process of recycling waste paper boxes to produce packaging paper boxes. By mixing pulp residue with waste paper raw materials and filtering, coarse pulp and fine pulp are formed. The coarse and fine pulps are respectively applied to the middle layer and the upper and lower layers in the pulping and papermaking process, which can effectively solve the pollution and treatment cost problems caused by pulp residue waste.

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a pulp and residue treatment system in the process of recycling waste paper boxes to produce packaging paper boxes, including a shell, a filter section is provided at the lower part of the shell, and the lower end of the filter section is connected to a wastewater buffer section; The housing is provided with a guide hopper, and a mixing hopper is provided at the bottom of the guide hopper. A first material passing strip hole is provided on the bottom surface of the mixing hopper. A second motor is provided at the bottom of the housing. The drive shaft of the second motor passes downward into the housing and is connected to the mixing shaft. The mixing shaft extends into the mixing hopper. A mixing rod is provided on the mixing shaft part located in the mixing hopper. The filter section is equipped with two filter plates, one upper and one lower. A pusher cylinder is fixed on the outer wall of the filter section. The pusher rod of the pusher cylinder is set horizontally. A scraper plate is provided in the filter section above the filter plates. One end of the pusher rod of the pusher cylinder is fixed to one side of the filter plate. A conveyor belt located outside the filter section is provided on the other side of the filter plate.

[0004] In a preferred embodiment, scraper holes are provided on two opposite sidewalls of the filter section, and scraper plates pass through the scraper holes. The scraper plates are provided with square holes of the same size as the horizontal cross-sectional dimensions of the filter section. Side guide grooves are provided on the inner wall of the filter section on both sides of the scraper hole, and the two sides of the scraper are located in the side guide grooves.

[0005] In a preferred embodiment, the top of the shell is provided with a pulp inlet pipe, a waste paper inlet pipe and a water inlet pipe, and a drain pipe is provided on the wastewater buffer section.

[0006] In a preferred embodiment, the waste paper feed pipe is inclined, a vertical waste paper branch pipe is provided on the waste paper feed pipe, a cutting shaft is provided inside the waste paper feed pipe, a cutting blade is provided on the cutting shaft, and the cutting shaft is driven by a first motor located outside the higher end of the waste paper feed pipe.

[0007] In a preferred embodiment, the bottom surface of the mixing hopper is provided with multiple first material passing strip holes, which are arranged radially. The bottom surface of the mixing hopper is also provided with a through-shaft hole for the mixing shaft to pass through. The bottom of the mixing hopper is provided with a material distribution plate. The lower end of the mixing shaft passing through the shaft hole is fixed in the mixing shaft slot provided in the center of the material distribution plate. The material distribution plate is provided with a second material passing strip hole with the same shape and size as the first material passing strip hole.

[0008] In a preferred embodiment, the filter plate with the larger pore diameter is located on the upper filter plate than the filter plate with the smaller pore diameter.

[0009] In a preferred embodiment, a push cylinder bracket is fixedly provided on the outer wall of the filter section, and the push cylinder is fixedly mounted on the push cylinder bracket.

[0010] In a preferred embodiment, a chute is provided on the other side of the filter section opposite to the location of the push cylinder, and the chute is located below the scraper plate hole; The conveyor belt is positioned below the chute.

[0011] In a preferred embodiment, the upper conveyor belt is a coarse material conveyor belt, and the lower conveyor belt is a fine material conveyor belt.

[0012] The pulp residue treatment system in the process of recycling waste cardboard boxes to produce packaging boxes provided by this utility model has the following beneficial effects by adopting the above structure: (1) By setting up two filter plates in the filter section, and the filter hole diameter of the upper filter plate is larger than that of the lower filter plate, the fiber can be graded and screened. After screening out the fine pulp and coarse pulp, it can be reused in the production of packaging paper, realizing the secondary use of resources and reducing the amount of glue used between paper layers. (2) The combination of the mixing hopper and the mixing rod can make the materials fully mixed, and the design of the material distribution plate can distribute the material evenly, ensuring the effect of subsequent filtration treatment; (3) It reduces the amount of waste that needs to be dehydrated, dried and landfilled, thus reducing the cost of waste disposal. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the mixing hopper structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the fabric transfer plate structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the scraper structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the filter section with a scraper in this utility model.

[0018] In the diagram: 1. Shell; 2. Filter section; 201. Scraper hole; 202. Side guide groove; 3. Wastewater buffer section; 4. Guide hopper; 5. Slurry inlet pipe; 6. Waste paper inlet pipe; 7. Water inlet pipe; 8. Drainage pipe; 9. Waste paper branch pipe; 10. Cutting shaft; 11. Cutting blade; 12. First motor; 13. Mixing hopper; 131. First material pass-through bar hole; 132. Through shaft hole; 14. Material distribution plate; 141. Second material pass-through bar hole; 142. Mixing shaft slot; 15. Second motor; 16. Mixing shaft; 17. Mixing rod; 18. Filter plate; 19. Scraper; 191. Square hole; 20. Push cylinder; 21. Push cylinder bracket; 22. Chute; 23. Coarse material conveyor belt; 24. Fine material conveyor belt. Detailed Implementation

[0019] like Figure 1-5 In a process of recycling waste paper boxes to produce packaging paper boxes, a pulp and residue treatment system is provided, including a shell 1, a filter section 2 is provided at the lower part of the shell 1, and the lower end of the filter section 2 is connected to a wastewater buffer section 3. The housing 1 is provided with a guide hopper 4, and a mixing hopper 13 is provided at the bottom of the guide hopper 4. A first material passing strip hole 131 is provided on the bottom surface of the mixing hopper 13. A second motor 15 is provided at the bottom of the housing 1. The drive shaft of the second motor 15 passes downward into the housing 1 and is connected to the mixing shaft 16. The mixing shaft 16 extends into the mixing hopper 13. A mixing rod 17 is provided on the part of the mixing shaft 16 located in the mixing hopper 13. The filter section 2 is provided with two filter plates 18, one above the other. A push cylinder 20 is fixed on the outer wall of the filter section 2. The push rod of the push cylinder 20 is set horizontally. A scraper 19 is provided in the filter section 2 above the filter plate 18. One end of the push rod of the push cylinder 20 is fixed to one side of the filter plate 18. A conveyor belt located outside the filter section 2 is provided on the other side of the filter plate 18.

[0020] In a preferred embodiment, scraper holes 201 are provided on two opposite sidewalls of the filter section 2, and scraper 19 passes through the scraper holes 201. The scraper 19 is provided with square holes 191 with the same size as the horizontal cross-sectional size of the filter section 2. Side guide grooves 202 are provided on the inner wall of the filter section 2 on both sides of the scraper hole 201, and the two sides of the scraper 19 are located in the side guide grooves 202.

[0021] In a preferred embodiment, the top of the shell 1 is provided with a pulp inlet pipe 5, a waste paper inlet pipe 6 and a water inlet pipe 7, and the wastewater buffer section 3 is provided with a drain pipe 8.

[0022] In a preferred embodiment, the waste paper feed pipe 6 is inclined, and a vertical waste paper branch pipe 9 is provided on the waste paper feed pipe 6. A cutting shaft 10 is provided inside the waste paper feed pipe 6, and a cutting blade 11 is provided on the cutting shaft 10. The cutting shaft 10 is driven by a first motor 12 located outside the higher end of the waste paper feed pipe 6.

[0023] In a preferred embodiment, the bottom surface of the mixing hopper 13 is provided with multiple first material passing strip holes 131, which are arranged radially. The bottom surface of the mixing hopper 13 is also provided with a through hole 132 for the mixing shaft 16 to pass through. The bottom of the mixing hopper 13 is provided with a material distribution plate 14. The lower end of the mixing shaft 16, which passes through the shaft hole 132, is fixed in the mixing shaft slot 142 provided in the center of the material distribution plate 14. The material distribution plate 14 is provided with a second material passage hole 141 with the same shape and size as the first material passage hole 131.

[0024] In a preferred embodiment, of the two filter plates 18, the filter pore diameter of the upper filter plate 18 is larger than that of the lower filter plate 18.

[0025] In a preferred embodiment, a push cylinder bracket 21 is fixedly provided on the outer wall of the filter section 2, and the push cylinder 20 is fixedly mounted on the push cylinder bracket 21.

[0026] In a preferred embodiment, a chute 22 is provided on the other side of the filter section 2 opposite to the location of the push cylinder 20, and the chute 22 is located below the scraper hole 201; The conveyor belt is positioned below the chute 22.

[0027] In a preferred embodiment, the upper conveyor belt is the coarse material conveyor belt 23, and the lower conveyor belt is the fine material conveyor belt 24.

[0028] The pulp residue treatment system disclosed in this utility model for the production of packaging cartons from recycled waste cardboard boxes operates as follows: First, pulp residue is introduced into the housing 1 through the pulp residue inlet pipe 5, and waste paper raw materials are introduced through the waste paper inlet pipe 6 and waste paper branch pipe 9. At the same time, an appropriate amount of water is introduced through the water inlet pipe 7. After being cut and crushed by the cutting shaft 10 and cutting blade 11 in the waste paper inlet pipe 6, the waste paper enters the housing 1 and enters the mixing hopper 13 under the guidance of the guide hopper 4. The second motor 15 starts, driving the mixing shaft 16 and mixing rod 17 to rotate, so as to fully mix the materials in the mixing hopper 13. The mixed materials fall onto the upper filter plate 18 in the filter section 2 through the first material passage hole 131 and the second material passage hole 141. During the filtration process, long-fiber coarse slurry is retained by the upper filter plate 18, while short-fiber fine slurry falls through the filter holes of the upper filter plate 18 onto the lower filter plate 18 and is retained. Wastewater enters the wastewater buffer section 3 through the filter holes of the lower filter plate 18 and is finally discharged through the drain pipe 8. After a certain amount of fiber is trapped on the filter plate 18, the push cylinder 20 is activated, pushing the scraper 19 to move in the side guide groove 202. The scraper 19 scrapes the long fiber coarse pulp on the upper filter plate 18 onto the chute 22. The long fiber coarse pulp slides down the chute 22 onto the coarse material conveyor belt 23 and is transported to the subsequent processing steps. Similarly, the short fiber fine pulp on the lower filter plate 18 will also be scraped off by the scraper 19 and slide down the chute 22 onto the fine material conveyor belt 24 for transport.

Claims

1. A pulp residue treatment system for the production of packaging cartons from recycled waste cardboard boxes, comprising a shell (1), characterized in that: The lower part of the shell (1) is provided with a filter section (2), and the lower end of the filter section (2) is connected to the wastewater buffer section (3); The housing (1) is provided with a guide hopper (4), and a mixing hopper (13) is provided at the bottom of the guide hopper (4). A first material passing strip hole (131) is provided on the bottom surface of the mixing hopper (13). A second motor (15) is provided at the bottom of the housing (1). The drive shaft of the second motor (15) passes downward into the housing (1) and is connected to the mixing shaft (16). The mixing shaft (16) extends into the mixing hopper (13). A mixing rod (17) is provided on the mixing shaft (16) part located in the mixing hopper (13). The filter section (2) is provided with two filter plates (18) on the upper and lower sides. A push cylinder (20) is fixed on the outer wall of the filter section (2). The push rod of the push cylinder (20) is set horizontally. A scraper (19) is provided in the filter section (2) above the filter plate (18). One end of the push rod of the push cylinder (20) is fixed to one side of the filter plate (18). A conveyor belt located outside the filter section (2) is provided on the other side of the filter plate (18).

2. The pulp residue treatment system in the waste cardboard box recycling and packaging cardboard box production process according to claim 1, characterized in that: The filter section (2) has scraper holes (201) on two opposite side walls. The scraper (19) passes through the scraper holes (201) and has square holes (191) with the same size as the horizontal cross-sectional size of the filter section (2). Side guide grooves (202) are provided on the inner wall of the filter section (2) on both sides of the scraper hole (201), and the two sides of the scraper (19) are located in the side guide grooves (202).

3. The pulp residue treatment system in the waste cardboard box recycling and packaging cardboard box production process according to claim 1, characterized in that: The top of the shell (1) is provided with a pulp inlet pipe (5), a waste paper inlet pipe (6) and a water inlet pipe (7), and a drain pipe (8) is provided on the wastewater buffer section (3).

4. The pulp residue treatment system in the waste cardboard box recycling and packaging cardboard box production process according to claim 3, characterized in that: The waste paper feed pipe (6) is inclined and has a vertical waste paper branch pipe (9) on it. The waste paper feed pipe (6) has a cutting shaft (10) inside it and a cutting blade (11) on it. The cutting shaft (10) is driven by a first motor (12) located outside the higher end of the waste paper feed pipe (6).

5. The pulp residue treatment system in the process of recycling waste cardboard boxes to produce packaging cardboard boxes according to claim 1, characterized in that: The mixing hopper (13) has multiple first material passing strip holes (131) on its bottom surface, and the multiple first material passing strip holes (131) are arranged radially. The mixing hopper (13) also has a through hole (132) in the middle of its bottom surface for the mixing shaft (16) to pass through. The bottom of the mixing hopper (13) is provided with a material distribution plate (14). The lower end of the mixing shaft (16) passing through the shaft hole (132) is fixed in the mixing shaft slot (142) provided in the center of the material distribution plate (14). The material distribution plate (14) is provided with a second material passage hole (141) with the same shape and size as the first material passage hole (131).

6. The pulp residue treatment system in the process of recycling waste cardboard boxes to produce packaging cardboard boxes according to claim 1, characterized in that: Of the two filter plates (18), the filter plate (18) located above has a larger pore diameter than the filter plate (18) located below.

7. The pulp residue treatment system in the process of recycling waste cardboard boxes to produce packaging cardboard boxes according to claim 1, characterized in that: The filter section (2) is fixedly provided with a push cylinder bracket (21) on its outer wall, and the push cylinder (20) is fixedly provided on the push cylinder bracket (21).

8. The pulp residue treatment system in the process of recycling waste cardboard boxes to produce packaging cardboard boxes according to claim 6, characterized in that: A chute (22) is provided on the other side of the filter section (2) opposite to the location of the push cylinder (20), and the chute (22) is located below the scraper hole (201); The conveyor belt is positioned below the chute (22).

9. The pulp residue treatment system in the process of recycling waste cardboard boxes to produce packaging cardboard boxes according to claim 8, characterized in that: The upper conveyor belt is the coarse material conveyor belt (23), and the lower conveyor belt is the fine material conveyor belt (24).

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