Energy-saving type paperboard continuous production device utilizing waste paper and sawdust

Abstract

The utility model relates to the technical field of renewable resource recovery, in particular to an energy-saving type paperboard continuous production device utilizing waste paper and wood chips, which comprises a conveying device, a conveying device, a conveying device, a conveying device and a conveying device, and the conveying device comprises a waste paper conveying belt and a wood chip conveying belt; blades and hammerheads which are arranged in a staggered manner are arranged in the crusher, the blades are spirally arranged, the hammerheads are hinged in the radial direction, and the blades and the hammerheads are distributed on the same rotor at intervals; the upper end of the vertical channel is communicated with a discharge port of the crusher, the lower end of the vertical channel is connected with the separation unit, the separation unit comprises a permanent magnet roller and an integrated cyclone separation device, and an air inlet of the cyclone separation device is tangentially connected with a discharge end of the permanent magnet roller; and the spraying rotary cleaning bin is arranged below the separation unit and comprises a high-pressure spraying system and a rotary roller, the spraying system is provided with adjustable nozzles which are spirally distributed, and the inner wall of the rotary roller is provided with flexible brush strips and a spiral guide plate. Waste paper and wood chips can be treated in a unified mode, and energy consumption is reduced by integrating the sorting and cleaning system.

Description

Technical Field

[0001] This application relates to the technical field of renewable resource recycling, and in particular to an energy-efficient continuous paperboard production apparatus utilizing waste paper and wood chips. Background Technology

[0002] With the increasing severity of global resource shortages and environmental pollution, promoting the efficient recycling of solid waste has become a core strategy for industrial upgrading in various countries. In the paper products industry, the proportion of waste paper and wood chips as renewable raw materials has been increasing year by year.

[0003] A search revealed that Chinese Patent Publication No. CN221890057U discloses an energy-saving multi-stage waste paper crushing device, which includes a first crushing box and a second crushing box. Although the crushing uniformity is improved by processing waste paper in two stages through the two crushing boxes, the equipment is bulky and its energy consumption increases by more than 30%, making it difficult to adapt to small and medium-sized production lines.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: existing technologies suffer from low crushing efficiency due to the significant differences in the physical properties of waste paper and wood chips, and high energy consumption due to the discrete nature of the sorting and cleaning systems. Utility Model Content

[0005] To address the problems mentioned in the background section, this application provides an energy-saving continuous paperboard production apparatus that utilizes waste paper and wood chips.

[0006] The energy-saving continuous paperboard production apparatus utilizing waste paper and wood chips provided in this application adopts the following technical solution:

[0007] Optionally, the conveying device includes a waste paper conveyor belt and a wood chip conveyor belt, each equipped with an independent speed regulating mechanism, and their ends are connected to the crusher inlet via a guide trough.

[0008] The crusher is equipped with staggered blades and hammers. The blades are arranged in a spiral and the hammers are radially hinged. The blades and hammers are distributed at intervals on the same rotor.

[0009] The vertical channel is connected to the crusher outlet at the top and to the separation unit at the bottom. The separation unit includes a permanent magnet drum and an integrated cyclone separator. The air inlet of the cyclone separator is tangentially connected to the discharge end of the permanent magnet drum.

[0010] The spray rotary cleaning chamber is located below the separation unit. The spray rotary cleaning chamber includes a high-pressure spray system and a rotating drum. The spray system is equipped with adjustable nozzles arranged in a spiral pattern, and the inner wall of the rotating drum is equipped with flexible brush strips and spiral guide plates.

[0011] With the above scheme, the dual conveyor belts for waste paper and wood chips can be independently speed-regulated, and the feed can be precisely mixed through the guide trough to ensure that the raw material ratio is controllable. The spiral blades (for shearing waste paper) and the articulated hammers (for impacting wood chips) distributed on the same rotor guide the crushed material to fall to the separation unit by gravity, reducing the energy consumption of mechanical transmission.

[0012] Optionally, a scraper is provided on one side of the permanent magnet drum, and the scraper is attached to the surface of the permanent magnet drum.

[0013] The above method adheres to the surface of the permanent magnet drum, continuously scraping away adsorbed metal impurities and preventing impurity accumulation from affecting magnetic separation efficiency.

[0014] Optionally, the inner wall of the vertical channel is provided with a flow guiding structure, which is provided with multiple inclined flow guiding vanes.

[0015] The above method guides the material to fall evenly along the vertical channel by tilting the guide vanes, avoiding local blockage or deflection.

[0016] Optionally, the crusher discharge port is equipped with a screen, which is a composite screen consisting of multiple layers of screen with different apertures.

[0017] The above scheme uses multi-layer screens for grading and screening. The upper layer intercepts large waste paper fibers, while the lower layer filters out compliant wood chips, thus improving the uniformity of crushing.

[0018] Optionally, a vibrator is installed on the vertical channel, which is connected to the flow guide structure and the screen to disperse accumulated waste paper and wood chips.

[0019] The above scheme uses vibrating guide vanes and screens to break up material accumulation, maintaining continuous feeding and screening efficiency.

[0020] Optionally, the crusher's rotor comprises two parallel rotors, each equipped with blades and hammers, and the rotors rotate in opposite directions.

[0021] Through the above scheme, the two counter-rotating rotors form a shear-impact composite force field, which further refines the crushed particles and prevents fiber entanglement.

[0022] In summary, this application includes the following beneficial technical effects:

[0023] This utility model incorporates components such as a waste paper conveyor belt, a wood chip conveyor belt, a guide trough, and a crusher. Through the guide trough and independent speed regulation, the dual-speed conveyor belt can precisely mix the raw materials by adjusting the feeding ratio of waste paper and wood chips.

[0024] This invention, by setting up components such as staggered blades, hinged hammers, and vertical channels, and through the matching relationship between the spiral arrangement of the blades and the radial distribution of the hammers, enables the crusher rotor to simultaneously crush waste paper and wood chips, achieving efficient fine crushing of mixed raw materials by adapting to the crushing process.

[0025] This invention incorporates components such as a permanent magnet drum, scraper, and cyclone separator. By ensuring the scraper adheres to the surface of the drum, the magnetic separation unit can continuously scrape away metal impurities, thereby improving the sorting efficiency and achieving the effect of removing impurities from the magnetically separated raw materials through mechanical self-cleaning. Attached Figure Description

[0026] Figure 1 This is the overall front view of the embodiments in this application;

[0027] Figure 2 This is an isometric view of the entire embodiment of this application;

[0028] Figure 3 This is a partial enlarged view of the vertical channel in an embodiment of this application;

[0029] Figure 4 This is a partial enlarged view of the spray rotating cleaning chamber in the embodiments of this application;

[0030] Figure 5 This is a full sectional view of the overall front view in the embodiments of this application.

[0031] Reference numerals: 1. Conveying device; 11. Waste paper conveyor belt; 12. Wood chip conveyor belt; 3. Guide channel; 4. Crusher; 41. Rotor; 42. Blade; 43. Hammer; 44. Screen; 5. Vertical channel; 51. Guide structure; 511. Guide plate; 52. Vibrator; 6. Separation unit; 61. Permanent magnet drum; 611. Scraper; 62. Cyclone separator; 7. Spray rotary cleaning chamber; 71. Spray system; 72. Rotary drum; 721. Guide plate. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application discloses an energy-saving continuous paperboard production apparatus utilizing waste paper and wood chips. Please refer to [link / reference]. Figure 1 The continuous paperboard production apparatus of this embodiment includes a conveying device 1, which includes a waste paper conveyor belt 11 and a wood chip conveyor belt 12. The ends of both are connected to the inlet of the crusher 4 through an inclined guide trough 3. The speed ratio of the waste paper conveyor belt 11 and the wood chip conveyor belt 12 is controlled by an independent speed regulating mechanism. The inclination angle of the guide trough 3 is matched with the inlet height of the crusher 4, so that the mixed raw materials slide into the crusher 4 entirely by gravity.

[0034] Please see Figure 5 The crusher 4 adopts a dual rotor 41 structure. The two rotors 41 are arranged in parallel and rotate in opposite directions. The blades 42 and hammers 43 of the first rotor 41 and the second rotor 41 are staggered to form a shear-impact composite force field. The crushed material falls naturally to the discharge port by gravity. A composite screen 44 is set below the discharge port. The upper layer is a long strip screen slit and the lower layer is a circular screen hole.

[0035] Please see Figure 4 The upper end of the vertical channel 5 is connected to the discharge port of the crusher 4. The inner wall is equipped with multiple sets of inclined guide vanes 511 to guide the material to be evenly dispersed and fall to the separation unit 6 by gravity. The separation unit 6 includes a permanent magnet drum 61 and an integrated cyclone separator 62: the surface of the permanent magnet drum 61 adsorbs metal impurities, and the scraper 611 is attached to the surface of the drum to continuously scrape off the metal impurities; the air inlet of the cyclone separator is tangentially connected to the discharge end of the permanent magnet drum 61, and uses centrifugal force to separate light fibers and dust. The separated impurities are discharged through the bottom ash discharge valve.

[0036] Please see Figure 4 A vibrator 52 is installed on the side wall of the vertical channel 5. The vibrator 52 is linked to the guide plate 511 and the composite screen 44 through a linkage mechanism. When material accumulation is detected, the vibrator 52 triggers intermittent vibration to disperse the blocked waste paper fibers or wood chips, ensuring that the gravity fall is continuous and unobstructed.

[0037] Please see Figure 2 The spray rotary cleaning chamber 7 is located below the separation unit 6 and includes a high-pressure spray system 71 and a low-speed rotating drum 72. The inner wall of the drum is equipped with a spiral guide plate 721 and flexible brush strips. Under the influence of gravity, the material tumbles and moves forward along the guide plate 721, while high-pressure nozzles spray water to clean surface impurities. The cleaning wastewater flows into a sedimentation tank by gravity through a bottom filter screen, and after filtration, is reused in the spray system 71, forming a closed-loop water circulation.

[0038] The implementation principle of this energy-saving continuous paperboard production device using waste paper and wood chips is as follows: Waste paper and wood chips are conveyed to the inclined guide trough 3 by independently speed-adjustable conveyor belts. The mixed raw materials slide into the inlet of the dual rotor 41 crusher 4 by gravity. The dual rotor 41 performs differentiated crushing to shear and crush the waste paper fibers, and the hinged hammer 43 impacts and crushes the wood chip particles. After being graded by the composite screen 44, qualified particles fall naturally to the vertical channel 5 by gravity. The wave-shaped guide vanes 511 on the inner wall of the vertical channel 5 guide the material to fall evenly and disperse. First, metal impurities are adsorbed on the surface of the permanent magnet drum 61, and then continuously scraped off by the single scraper 611 on the side of the permanent magnet drum 61. Impurities are collected in the collection tank, and then the material enters the cyclone separator. Under the centrifugal force generated by the tangential air intake, lightweight fibers and dust are separated and discharged through the ash outlet. The sorted raw material continues to fall into the spray rotary cleaning chamber 7. Inside the low-speed rotating drum 72, the spiral guide plate 721 uses gravity to make the material roll forward. The flexible brush strips and high-pressure spray water flow work together to remove surface impurities. The cleaning wastewater flows into the sedimentation tank through the filter screen, and after centrifugal filtration, it is pumped back into the spray system 71 to form a closed-loop water circulation. Finally, the clean raw material is output to the collection chamber through the gravity slide. No additional power transmission mechanism is required throughout the process. Through the vertical integration of crushing, sorting and cleaning modules and gravity drive, continuous and low-energy production is achieved.

[0039] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An energy-saving continuous paperboard production device utilizing waste paper and wood chips, characterized in that, include: The conveying device (1) includes a waste paper conveyor belt (11) and a wood chip conveyor belt (12). The waste paper conveyor belt (11) and the wood chip conveyor belt (12) are respectively equipped with independent speed adjustment mechanisms, and their ends are connected to the inlet of the crusher (4) through a guide channel (3). The crusher (4) is equipped with staggered blades (42) and hammers (43). The blades (42) are arranged in a spiral, and the hammers (43) are radially hinged. The blades (42) and the hammers (43) are distributed at intervals on the same rotor (41). Vertical channel (5), the upper end of which is connected to the discharge port of the crusher (4), and the lower end is connected to the separation unit (6). The separation unit (6) includes: permanent magnet drum (61) and integrated cyclone separator (62). The air inlet of the cyclone separator (62) is tangentially connected to the discharge end of the permanent magnet drum (61). The spray rotary cleaning chamber (7) is located below the separation unit (6). The spray rotary cleaning chamber (7) includes a high-pressure spray system (71) and a rotating drum (72). The spray system (71) is provided with adjustable nozzles with spiral distribution. The inner wall of the rotating drum (72) is provided with flexible brush strips and spiral guide plates (721).

2. The energy-saving continuous paperboard production apparatus utilizing waste paper and wood chips according to claim 1, characterized in that: A scraper (611) is provided on one side of the permanent magnet roller (61), and the scraper (611) is attached to the surface of the permanent magnet roller (61).

3. The energy-saving continuous paperboard production apparatus utilizing waste paper and wood chips according to claim 1, characterized in that: The inner wall of the vertical channel (5) is provided with a flow guiding structure (51), and the flow guiding structure (51) is provided with a plurality of inclined flow guiding plates (511).

4. The energy-saving continuous paperboard production apparatus utilizing waste paper and wood chips according to claim 3, characterized in that: The discharge port of the crusher (4) is equipped with a screen (44), which is a composite screen (44) comprising multiple layers of screens (44) with different apertures.

5. The energy-saving continuous paperboard production apparatus utilizing waste paper and wood chips according to claim 4, characterized in that: A vibrator (52) is installed on the vertical channel (5), the vibrator (52) is connected to the flow guide structure (51) and the screen (44), and is used to disperse the accumulated waste paper and wood chips.

6. The energy-saving continuous paperboard production apparatus utilizing waste paper and wood chips according to claim 1, characterized in that: The rotor (41) of the crusher (4) includes two rotors (41) arranged in parallel, each rotor (41) is provided with the blade (42) and the hammer (43), and the rotors (41) rotate in opposite directions.

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