Kitchen garbage impurity sorting device adopting multi-stage roller screening

Abstract

The invention relates to the technical field of environmental protection, in particular to a multi-stage roller screening kitchen garbage impurity sorting device which comprises a sorting box, a multi-stage screening assembly capable of rotating is installed in an inner cavity of the sorting box, and a power assembly for driving the multi-stage screening assembly to rotate is installed on one side of the sorting box. The power assembly drives the multi-stage screening assembly to rotate so as to conduct multi-stage screening on the kitchen waste, the sorting box, the power assembly and the multi-stage screening assembly are matched, and the multi-stage screening assembly with multiple screening hole areas is arranged in the sorting box, so that gradient fine sorting of the kitchen waste is achieved; and the multi-stage screening assembly can finish classified screening according to the particle size difference of the kitchen garbage and impurities through different screening hole areas, so that the garbage can be stably pushed in the rotating process, the garbage with different particle sizes can be conveniently subjected to differentiation treatment subsequently, and the difficulty of the subsequent treatment link is reduced.

Description

Technical Field

[0001] This invention belongs to the field of environmental protection technology, and specifically relates to a multi-stage drum screen for separating kitchen waste impurities. Background Technology

[0002] Kitchen waste refers to waste generated in daily life, food processing, catering services, and institutional catering activities. It includes discarded vegetable leaves, leftover food, fruit peels, eggshells, tea dregs, bones, etc. Its main sources are family kitchens, restaurants, hotels, canteens, markets, and other industries related to food processing. Kitchen waste must be provided to professional processing units for treatment. It is strictly prohibited to process waste cooking oil (including gutter oil) for use as cooking oil, to directly use kitchen waste to feed livestock, poultry, and fish, and to produce fertilizer from kitchen waste that has not undergone harmless treatment.

[0003] The sorting of kitchen waste is an important part of waste sorting. Waste sorting refers to the process where waste is considered private property of the public during the sorting and storage stage, becomes a quasi-public resource of the community after being sorted and disposed of by the public, and then becomes a non-exclusive public resource after being transported to waste collection points or transfer stations. Judging from the current methods of sorting and classifying kitchen waste in various cities at home and abroad, most of them are based on the composition and quantity of waste, combined with local waste resource utilization and treatment methods. In existing technologies, sorting is usually done before crushing kitchen waste. This is done by feeding kitchen waste into a screening device for screening, and then feeding the remaining waste into a screening device with smaller mesh size on the screen for further screening. This achieves multi-stage screening of kitchen waste, that is, using multiple screening devices to circulate and screen waste of different sizes, thereby separating waste of different sizes. However, existing screening methods use screens with different mesh sizes to screen kitchen waste of different sizes, which cannot screen multiple kitchen wastes of different sizes at the same time, thus affecting the screening effect. Therefore, we need to propose a kitchen waste impurity sorting device with multi-stage drum screening. Summary of the Invention

[0004] To address the above problems, this invention provides a multi-stage drum screen for separating kitchen waste impurities, comprising: The sorting box has a rotatable multi-stage screening component installed inside its cavity. A power component that drives the multi-stage screening component to rotate is installed on one side of the sorting box. The power component drives the multi-stage screening component to rotate in order to perform multi-stage screening of kitchen waste. The top of the inner cavity of the sorting box is equipped with a cleaning mechanism located inside the multi-stage screening assembly. Below the cleaning mechanism is a high-pressure spray mechanism for rinsing the inside of the multi-stage screening assembly. The top of the sorting box is equipped with multiple sets of external rinsing mechanisms for rinsing the outer wall of the multi-stage screening assembly. The cleaning mechanism cleans the debris attached to the inside of the multi-stage screening assembly.

[0005] Furthermore, the multi-stage screening assembly includes a screening drum. The outer side of the screening drum is provided with a first screen hole area, a second screen hole area, and a third screen hole area in sequence from one end to the other. Multiple sets of bearings are installed on the outer side of the screening drum at equal intervals, and the multiple sets of bearings are alternately arranged with the first screen hole area, the second screen hole area, and the third screen hole area. One end of the screening drum is provided with a feed hole for food waste to be put in. Multiple sets of blades for pushing food waste are fixedly connected to the inner wall of the screening drum.

[0006] Furthermore, the power assembly includes a first motor installed on one side of the sorting box, the output shaft of the first motor being drivenly connected to a rotating shaft passing through the sorting box, a gear being installed at one end of the rotating shaft, and a gear ring portion for gear meshing being provided at one end of the screening drum.

[0007] Furthermore, the cleaning mechanism includes an adjustment component and a support component installed on the top of the inner cavity of the sorting box. A drive component is installed on the adjustment component, and a cleaning component composed of hard bristles for cleaning the inner wall of the screening drum is installed between the drive component and the adjustment component.

[0008] Furthermore, the support assembly includes a positioning angle plate and a support angle plate integrally formed. Multiple sets of positioning bolts are inserted into the positioning angle plate and bolted to the top of the sorting box. The support angle plate is located at the lower end of one side of the positioning angle plate, and the connection end between the support angle plate and the positioning angle plate is located in the feed hole. Two sets of reinforcing beams are provided on the other side of the positioning angle plate. A bushing for the other end of the roller shaft to be inserted is rotatably installed on one side of the support angle plate.

[0009] Furthermore, the positioning assembly includes two sets of fixed plates fixedly connected to the top of the sorting box, and guide rails are fixedly connected to the upper ends of opposite sides of the two sets of fixed plates. Sliding seats are slidably arranged on the two sets of guide rails, and a base plate for mounting the second motor is fixedly connected to the lower surface of the sliding seats. An adjusting screw for adjusting the position of the base plate is rotatably installed between the two sets of fixed plates, and a limiting bolt that abuts against the sliding seat is threaded to one side of one set of fixed plates.

[0010] Furthermore, the high-pressure spraying mechanism includes a high-pressure water pump and an inner pipe. The high-pressure water pump is installed on one side of the sorting box. One end of the inner pipe is fixedly connected to the lower end of one side of the supporting corner plate. The inlet end of the high-pressure water pump is connected to a water pumping pipe, and the outlet end of the high-pressure water pump is connected to an installation pipe inserted into the inner cavity of the sorting box. A first valve is provided at one end of the installation pipe outside the sorting box. The other end of the inner pipe is fixedly connected to the outside of the installation pipe. Multiple sets of first nozzles are symmetrically arranged on the outside of the inner pipe.

[0011] Furthermore, each of the multiple sets of external rinsing mechanisms includes a shower plate disposed inside the sorting box. The lower surface of the shower plate is provided with multiple sets of second nozzles, and the upper surface of the shower plate is provided with a water supply pipe penetrating the sorting box and multiple sets of screws. A second valve is installed on the water supply pipe, and the upper ends of the multiple sets of screws are threaded with two sets of locking nuts.

[0012] Furthermore, the inner cavity of the sorting box is fixedly connected with a support frame for mounting multiple sets of bearings. One side of the sorting box is provided with a transparent window corresponding to the first screen area, the second screen area, and the third screen area. The bottom of the sorting box is equipped with a waste collection hopper located below the first screen area, the second screen area, and the third screen area. A discharge hopper is provided at one end of the lower surface of the sorting box, and a mounting frame is provided at the bottom of the sorting box.

[0013] Furthermore, it also includes a feeding assembly, which includes a guide pipe inserted into one end of the upper surface of the sorting box. One end of the guide pipe located outside the sorting box is connected to a feed hopper, and the other end of the guide pipe passes through the feed hole and is disposed in the inner cavity of the screening drum.

[0014] The beneficial effects of this invention are: 1. This invention achieves gradient fine sorting of kitchen waste by coordinating the sorting box, power assembly, and multi-stage screening assembly. The multi-stage screening assembly with multiple screen hole areas is set in the sorting box to achieve graded screening of kitchen waste and impurities based on particle size differences through different screen hole areas. This allows the waste to be pushed smoothly during rotation, which facilitates differentiated treatment of waste with different particle sizes and reduces the difficulty of subsequent processing steps. 2. Through the cooperation between the cleaning mechanism, the sorting box and the multi-stage screening components, the cleaning mechanism achieves efficient cleaning of the inner wall of the screening drum, which solves the problem that traditional screening devices are prone to screen hole blockage and reduced sorting efficiency due to garbage adhesion. In addition, the cleaning components can quickly remove the attached sticky garbage and impurities through the contact friction between the hard bristles and the inner wall of the drum, ensuring the smooth operation of the cleaning process. 3. This invention achieves comprehensive cleaning of the multi-stage screening components by coordinating the high-pressure spray mechanism, the external rinsing mechanism, and the multi-stage screening components through internal and external synergistic rinsing. The high-pressure spray mechanism, through multiple symmetrically arranged first nozzles, can perform high-pressure rinsing on the inner wall of the drum, washing away residual fine garbage and debris. The multiple external rinsing mechanisms, through second nozzles, comprehensively spray the outer wall of the drum to remove attached garbage and dirt, effectively preventing screen hole clogging and thus ensuring the long-term stable operation of the device. 4. This invention utilizes the coordination between the waste collection hopper, discharge hopper, feeding assembly, and inspection door. The waste collection hopper can classify and collect waste screened from different screen areas, thus facilitating waste classification and storage. The feeding assembly facilitates the rapid disposal of kitchen waste, while the discharge hopper collects other unscreened waste for subsequent processing. The inspection door allows for easy disassembly and maintenance of the cleaning mechanism.

[0015] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the internal structure of the sorting box according to an embodiment of the present invention is shown; Figure 3 A schematic cross-sectional view of the sorting box according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of a multi-stage screening component structure according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the drive assembly and adjustment assembly of the cleaning mechanism according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of the structure of the driving component according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of the structure of the support component according to an embodiment of the present invention is shown; Figure 8A schematic diagram of the support component and the cleaning component according to an embodiment of the present invention is shown; Figure 9 A schematic diagram of the high-pressure spray mechanism according to an embodiment of the present invention is shown; Figure 10 A schematic diagram of the external rinsing mechanism according to an embodiment of the present invention is shown; Figure 11 A schematic diagram of the power assembly structure according to an embodiment of the present invention is shown.

[0018] In the diagram: 1. Sorting box; 2. Controller; 3. Feeding assembly; 31. Feed hopper; 32. Guide pipe; 4. Power assembly; 41. First motor; 42. Rotating shaft; 43. Gear; 5. Multi-stage screening assembly; 51. Screening drum; 52. First screen area; 53. Second screen area; 54. Third screen area; 55. Feed hole; 56. Gear ring; 57. Bearing; 58. Blade; 6. Cleaning mechanism; 61. Positioning assembly; 611. Fixing plate; 612. Guide rail; 613. Sliding seat; 614. Base plate; 615. Adjusting screw; 62. Drive assembly; 621. Second motor; 622. Rotating seat; 623. Limiting plate; 624. Hexagonal shaft hole; 63. Support assembly; 631. Positioning angle plate; 632. Supporting angle plate; 633. Reinforcing beam; 634. Positioning bolt; 635. Bushing; 64. Cleaning assembly; 641. Roller shaft; 642. Baffle plate; 643. Connecting shaft; 644. Hard bristles; 65. Limit bolt; 7. High-pressure spraying mechanism; 71. High-pressure water pump; 72. Water suction pipe; 73. Installation pipe; 74. Inner pipe; 75. First nozzle; 76. First valve; 8. External flushing mechanism; 81. Shower plate; 82. Second nozzle; 83. Screw; 84. Water supply pipe; 85. Second valve; 86. Locking nut; 9. Visible transparent window; 10. Garbage collection bin; 11. Mounting frame; 12. Inspection door; 13. Discharge hopper; 14. Support frame. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1-11As shown, this embodiment of the invention provides a multi-stage drum screen for sorting kitchen waste impurities, including a sorting box 1. The inner cavity of the sorting box 1 is provided with a multi-stage screening component 5, a cleaning mechanism 6, a high-pressure spraying mechanism 7, and multiple sets of external rinsing mechanisms 8. The multi-stage screening component 5 is rotatably installed in the inner cavity of the sorting box 1. A power component 4 is installed on one side of the sorting box 1 to drive the multi-stage screening component 5 to rotate. The power component 4 drives the multi-stage screening component 5 to rotate to perform multi-stage screening of kitchen waste. The cleaning mechanism 6 is installed at the top of the inner cavity of the sorting box 1 and is located inside the multi-stage screening assembly 5. The cleaning mechanism 6 washes the inside of the multi-stage screening assembly 5 installed below the cleaning mechanism 6 through the high-pressure spray mechanism 7, washes the outer wall of the multi-stage screening assembly 5 through multiple sets of external washing mechanisms 8, and cleans the attached garbage inside the multi-stage screening assembly 5 through the cleaning mechanism 6.

[0021] In this embodiment, as Figure 2 and Figure 4 As shown, the multi-stage screening assembly 5 includes a screening drum 51, which is a stainless steel cylindrical tube with the same diameter at both ends. From one end to the other, the outer side of the screening drum 51 is sequentially provided with a first screen hole area 52, a second screen hole area 53, and a third screen hole area 54. The diameters of the screen holes in the first screen hole area 52, the second screen hole area 53, and the third screen hole area 54 increase sequentially, and the screen holes are arranged in an inverted conical shape (the inner diameter is slightly larger than the outer diameter to reduce the adhesion of sticky materials within the channels). Multiple sets of bearings 57 are installed equidistantly on the outer side of the screening drum 51. 7 is alternately arranged with the first screen hole area 52, the second screen hole area 53 and the third screen hole area 54 respectively. Specifically, multiple sets of bearings 57 are respectively arranged at both ends of the first screen hole area 52, the second screen hole area 53 and the third screen hole area 54. The multiple sets of bearings 57 and the support frame 14 isolate the sorting box 1 into multiple screening cavities, so as to facilitate the classification of kitchen waste of different specifications. One end of the screening drum 51 is provided with a feed hole 55 for kitchen waste to be put in. Multiple sets of blades 58 that push the kitchen waste are fixedly connected to the inner wall of the screening drum 51. The blades 58 are arranged in a spiral. By sequentially setting different screen hole areas on the screening drum 51, the waste is graded and screened to meet the sorting requirements of waste of different particle sizes. The design of the blade 58 provides power for the waste to be propelled in the drum, preventing waste from accumulating inside the drum and ensuring that the screening drum 51 slowly pushes the waste to move during rotation. The alternating arrangement of the bearing 57 and each screen hole area not only ensures the stability of the rotation of the screening drum 51, but also avoids the bearing 57 from blocking the screen hole area, thus avoiding affecting the screening effect. In addition, the setting of the feed hole 55 facilitates the accurate disposal of kitchen waste and improves the ease of use of the device. Bearing 57 is a double-row self-aligning roller bearing, filled with water-resistant and corrosion-resistant lithium-based grease (model: ZL-3H) to fill 1 / 3 to 1 / 2 of the internal space of bearing 57. Both ends of bearing 57 are equipped with skeleton rubber seals (model: TC40×62×12), and stainless steel dustproof rings are added to the outside of the seals to form a triple protection structure of sealing, dustproofing and lubrication. This can effectively prevent leachate, sewage and debris from entering the interior of bearing 57, avoid grease emulsification failure and bearing 57 corrosion. The inner ring of bearing 57 is fixed to the outer wall of screening drum 51, and the outer ring of bearing 57 is fixedly connected to the inner wall of support frame 14.

[0022] Furthermore, such as Figure 1 and Figure 11 As shown, the power assembly 4 includes a first motor 41 installed on one side of the sorting box 1. The output shaft of the first motor 41 is connected to a rotating shaft 42 that passes through the sorting box 1. A gear 43 is installed at one end of the rotating shaft 42. A toothed ring 56 for the gear 43 to mesh is provided at one end of the screening drum 51. The toothed ring 56 is a circular array of multiple sets of teeth. The first motor 41 drives the gear 43 on the rotating shaft 42 to rotate, and the gear 43 meshes with the toothed ring part 56 of the screening drum 51 to achieve smooth rotation of the screening drum 51. The gear 43 meshing transmission method has high transmission efficiency and low power loss, which can ensure that the screening drum 51 maintains a stable speed, thus facilitating multi-stage screening of kitchen waste. At the same time, this structure is easy to install and maintain, reducing the operation and maintenance cost of the device.

[0023] Better, such as Figure 2 , 5 Figures 5-8 As shown, the cleaning mechanism 6 includes an adjustment component 61 and a support component 63 installed on the top of the inner cavity of the sorting box 1. The position of the drive component 62 can be easily adjusted through the adjustment component 61, which facilitates the quick disassembly and assembly of the cleaning component 64. At the same time, it is convenient to drive the cleaning component 64 after installation. The drive component 62 is installed on the adjustment component 61, and the cleaning component 64 for cleaning the inner wall of the screening drum 51 is installed between the drive component 62 and the adjustment component 61. Secondly, such as Figure 2 and Figure 8As shown, the cleaning component 64 includes a roller 641, with baffles 642 fixedly connected to both ends of the roller 641. The baffles 642 are circular, and multiple sets of hard bristles 644 are provided on the outer side of the roller 641. The hard bristles 644 are all made of hard plastic, which can improve the cleaning effect on the inner wall of the screening drum 51. A connecting shaft 643 is provided at the end of the roller 641 that connects to the drive component 62. This allows for efficient friction cleaning through the hard bristles 644, while the baffles 642 prevent debris from entering the connection points between the cleaning component 64 and other components, ensuring the smooth operation of the cleaning component 64. The connecting shaft 643 facilitates quick docking between the cleaning component 64 and the drive component 62, improving the ease of disassembly and assembly of the cleaning component 64 and facilitating subsequent maintenance and replacement.

[0024] Furthermore, the length of the free end of the hard bristles 644 extending beyond the surface of the roller shaft 641 is 2-3 mm greater than the distance between the inner wall of the screening drum 51 and the roller shaft 641. This allows the hard bristles 644 to not only rub and clean the inner wall during rotation, but also to cut and hook entangled fibrous materials (such as plastic bag fragments, vegetable leaf fibers, etc.), and, together with the high-pressure water flow, to wash them away, thus preventing fibrous materials from getting entangled in the bearings 57 at both ends of the roller shaft 641 or the screening drum 51.

[0025] Preferred, such as Figures 5-6 As shown, the drive assembly 62 includes a second motor 621 and a rotating base 622. The rotating base 622 is driven by the output shaft of the second motor 621. The output shaft of the second motor 621 is equipped with a coupling bolted to the rotating base 622 to ensure installation stability. A limiting plate 623 that abuts against the baffle 642 is fixedly connected to the side of the rotating base 622 opposite to the second motor 621. The fit between the limiting plate 623 and the baffle 642 can ensure the stability of the cleaning assembly 64 installation and prevent the cleaning assembly 64 from shifting at an angle. A hexagonal shaft hole 624 for the connecting shaft 643 to be inserted is provided on one side of the limiting plate 623. In addition, such as Figures 7-8As shown, the support assembly 63 includes a positioning angle plate 631 and a support angle plate 632, both integrally formed. Both the positioning angle plate 631 and the support angle plate 632 are made of stainless steel. The positioning angle plate 631 is fitted with multiple sets of positioning bolts 634 that are bolted to the top of the sorting box 1. The positioning bolts 634 facilitate the quick assembly of the positioning angle plate 631. The support angle plate 632 is located at the lower end of one side of the positioning angle plate 631, and the connection end between the support angle plate 632 and the positioning angle plate 631 is located in the feed hole 55. The feed hole 55 provides space for the installation of the positioning angle plate 631 and the support angle plate 632. Two sets of reinforcing beams 633 are provided on the other side of the positioning angle plate 631. The reinforcing beams 633 further improve the installation stability of the positioning angle plate 631, thereby preventing the support assembly 63 from shaking and deforming due to the rotation of the cleaning assembly 64. A bushing 635 for the other end of the roller shaft 641 to be inserted is rotatably installed on one side of the support angle plate 632. The second motor 621 of the drive assembly 62 drives the cleaning assembly 64 to rotate through the rotating seat 622 and the limiting plate 623. The insertion and engagement of the hexagonal shaft hole 624 and the connecting shaft 643 ensures the accuracy of the transmission, avoids slippage, and ensures the stable transmission of cleaning power. The bushing 635 provides stable support for the other end of the cleaning assembly 64, ensuring that the cleaning assembly 64 will not deviate during rotation and improving the stability of cleaning.

[0026] Specifically, such as Figures 5-6 As shown, the positioning assembly 61 includes two sets of fixing plates 611 fixedly connected to the top of the sorting box 1. Guide rails 612 are fixedly connected to the upper ends of opposite sides of the two sets of fixing plates 611. Sliding seats 613 are slidably mounted on the two sets of guide rails 612, allowing the sliding seats 613 to move stably on the two sets of guide rails 612 and providing support. A base plate 614 for mounting the second motor 621 is fixedly connected to the lower surface of the sliding seat 613. The base plate 614 facilitates the installation of the drive assembly 62. A bottom-mounted mounting bracket is rotatably installed between the two sets of fixing plates 611. The adjusting screw 615 for adjusting the position of plate 614 facilitates the adjustment of the position of base plate 614, which in turn facilitates the adjustment of the position of drive assembly 62, thereby facilitating the disassembly, assembly, and drive of cleaning assembly 64. One side of a set of fixing plates 611 is threaded with a limiting bolt 65 that abuts against sliding seat 613. The limiting bolt 65 further limits the position of sliding seat 613, thereby preventing vibration generated during the rotation of cleaning assembly 64 from causing drive assembly 62 to disengage from cleaning assembly 64, thus improving the transmission stability of drive assembly 62. The cleaning component 64 can slide smoothly along the guide rail 612 by the cooperation of the fixed plate 611, the guide rail 612 and the sliding seat 613, which facilitates the disassembly and replacement of the cleaning component 64. The adjustable screw 615 can precisely adjust the position of the base plate 614 to achieve precise positioning of the cleaning component 64. The end of the adjustable screw 615 is provided with a handwheel for driving (not shown in the figure). like Figure 1 As shown, a controller 2 is installed on one side of the sorting box 1. The controller 2 is a PLC controller (model: S7-200SMART). The upper end of the side of the sorting box 1 adjacent to the controller 2 is connected to the maintenance door 12 by a hinge. The setting of the controller 2 facilitates the centralized control of the operation of various components of the device, which improves the automation level of the device. The maintenance door 12 facilitates the maintenance and repair of the internal components of the sorting box 1 by the staff, which reduces the difficulty of operation and maintenance.

[0027] In a further preferred embodiment, such as Figure 2 and Figure 9 As shown, the high-pressure spraying mechanism 7 includes a high-pressure water pump 71 and an inner pipe 74. The high-pressure water pump 71 is installed on one side of the sorting box 1. One end of the inner pipe 74 is fixedly connected to the lower end of one side of the support corner plate 632. The water inlet end of the high-pressure water pump 71 is connected to a water suction pipe 72. The end of the water suction pipe 72 opposite to the high-pressure water pump 71 is placed in an external water pool or tank. The water outlet end of the high-pressure water pump 71 is connected to an installation pipe 73 inserted into the inner cavity of the sorting box 1. The end of the installation pipe 73 located outside the sorting box 1 is provided with a first valve 76. The other end of the inner pipe 74 is fixedly connected to the outside of the installation pipe 73. Multiple sets of first nozzles 75 are symmetrically arranged on the outside of the inner pipe 74. The multiple sets of first nozzles 75 are distributed in two rows. The cleaning component 64 is set within the included angle range of the two rows of first nozzles 75. The rated working pressure of the high-pressure water pump 71 is set to 1.2-1.5MPa. The first nozzle 75 adopts a fan-shaped spray design with a spray angle of 60°. The overlap rate of the spray range of adjacent nozzles is not less than 20%, ensuring that the high-pressure water flow can fully cover all screen hole areas on the inner wall of the screening drum 51. The high-pressure water pump 71 provides a high-pressure water source to ensure the flushing force, effectively removing residual garbage from the inner wall of the screening drum 51. The inner tube 74 is fixed on the support angle plate 632, allowing the first nozzle 75 to be precisely aimed at the inner wall of the drum, improving the targeting of the flushing. The first valve 76 is designed to facilitate the control of the opening and closing of the flushing. At the same time, the opening and closing size of the first valve 76 can be controlled according to the screening and cleaning progress, thereby controlling the water flow and flexibly adjusting the flushing state to avoid water waste. In addition, the spraying mechanism has a compact structure, and its installation in conjunction with the support component 63 does not occupy too much space and does not affect the operation of other components inside the device.

[0028] Specifically, such as Figure 2 andFigure 10 As shown, each of the multiple sets of external rinsing mechanisms 8 includes a shower plate 81 installed in the inner cavity of the sorting box 1. The lower surface of the shower plate 81 is provided with multiple sets of second nozzles 82, which are arranged in a rectangular array. The upper surface of the shower plate 81 is provided with a water supply pipe 84 that penetrates the sorting box 1 and multiple sets of screws 83. A second valve 85 is installed on the water supply pipe 84. The water supply pipe 84 is connected to a water pump, thereby separating the internal rinsing and external rinsing steps. The upper ends of the multiple sets of screws 83 are each threaded with two sets of locking nuts 86. The working pressure of the second nozzle 82 of the external rinsing mechanism 8 is set to 0.8-1.0MPa. It adopts a solid cone spray design, which can generate a high-intensity impact water flow to effectively remove the attached impurities on the outside of the screen holes. The multiple sets of external rinsing mechanisms 8 ensure full coverage of the outer wall of the screening drum 51, avoiding rinsing dead corners. The multiple sets of second nozzles 82 make the rinsing water flow more uniform, improving the rinsing effect on the outer wall. The cooperation between the screw 83 and the locking nut 86 facilitates installation, while the second valve 85 on the water supply pipe 84 allows for individual control of the operation of each set of external rinsing mechanisms 8, improving the rinsing flexibility.

[0029] It is worth noting that, such as Figure 3 As shown, a support frame 14 for mounting multiple sets of bearings 57 is fixedly connected to the inner cavity of the sorting box 1. The support frame 14 ensures the stable installation of the bearings 57, further guaranteeing the stability of the rotation of the screening drum 51. A transparent window 9 corresponding to the first screen hole area 52, the second screen hole area 53, and the third screen hole area 54 is provided on one side of the sorting box 1. The transparent window 9 allows the staff to observe the screening situation of each screen hole area in real time, promptly identify and handle problems in the screening process, and the bottom of the sorting box 1 is equipped with a support frame 14 located in the first screen hole area 52. 2. The waste collection hopper 10 below the second screen area 53 and the third screen area 54 is designed to collect the waste sorted by each screen area, facilitating subsequent transfer and processing. A discharge hopper 13 is provided at one end of the lower surface of the sorting box 1. The discharge hopper 13 is used to discharge large-diameter impurities that cannot pass through the screen holes in the screening drum 51, achieving rapid cleaning of impurities. A mounting frame 11 is provided at the bottom of the sorting box 1, which leaves space between the sorting box 1 and the ground, thus facilitating the placement of other conveying equipment or collection boxes.

[0030] In addition, this sorting device also includes a feeding assembly 3, which includes a guide pipe 32 inserted into one end of the upper surface of the sorting box 1. One end of the guide pipe 32 located outside the sorting box 1 is connected to a feeding hopper 31, and the other end of the guide pipe 32 passes through the feeding hole 55 and is set in the inner cavity of the screening drum 51. The cooperation between the feed hopper 31 and the guide pipe 32 enables precise and smooth feeding of kitchen waste. The guide pipe 32 prevents spillage during the feeding process and improves the accuracy of feeding. At the same time, the feeding component 3 is precisely matched with the feed hole 55 of the screening drum 51, which does not affect the rotation of the screening drum 51, thus ensuring the continuity of the screening process.

[0031] When screening kitchen waste, firstly, the kitchen waste is put into the feed hopper 31 of the feeding component 3, and then fed into the inner cavity of the screening drum 51 through the feed hole 55 via the guide pipe 32. Subsequently, controller 2 starts the first motor 41. The first motor 41 drives the gear 43 to rotate through the rotating shaft 42. The gear 43 meshes with the toothed ring part 56 of the screening drum 51, driving the screening drum 51 to rotate smoothly. The blades 58 on the inner wall of the screening drum 51 push the garbage along the length of the screening drum 51. During the process of pushing, the garbage passes through the first screen hole area 52, the second screen hole area 53 and the third screen hole area 54 in sequence, so that garbage of different particle sizes falls into the garbage collection hopper 10 below through the corresponding screen holes to complete the grading and sorting. Large particle impurities that cannot pass through the screen holes are discharged from the other end of the screening drum 51 to the discharge hopper 13. During the screening process, the cleaning mechanism 6 operates synchronously, and the controller 2 starts the second motor 621. The second motor 621 drives the limit plate 623 through the rotating seat 622 to drive the roller 641 of the cleaning component 64 to rotate. The hard bristles 644 on the roller 641 contact and rub against the inner wall of the screening drum 51, thereby removing the sticky garbage and impurities attached to the inner wall of the screening drum 51. At the same time, the high-pressure spraying mechanism 7 and the external rinsing mechanism 8 work together. The high-pressure water pump 71 draws water through the water pumping pipe 72 and delivers it to the first nozzle 75 through the installation pipe 73 and the inner pipe 74 to perform high-pressure rinsing on the inner wall of the screening drum 51. Meanwhile, the water supply pipe 84 of the external rinsing mechanism 8 delivers water to the second nozzle 82 of the shower plate 81 to spray the outer wall of the screening drum 51. This allows the wastewater and the cleaned-up garbage debris to fall into the garbage collection bin 10 together, completing the cleaning process. By cleaning the screening drum 51, the screening efficiency is ensured. During the screening process, staff can observe the screening situation through the transparent window 9 and adjust the operating rhythm of each component through the controller 2 to ensure the sorting efficiency of the device.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage drum screen for separating kitchen waste impurities, characterized in that, include: The sorting box (1) has a rotatable multi-stage screening component (5) installed in its inner cavity. A power component (4) is installed on one side of the sorting box (1) to drive the multi-stage screening component (5) to rotate. The multi-stage screening component (5) is driven to rotate by the power component (4) to perform multi-stage screening of kitchen waste. The top of the inner cavity of the sorting box (1) is equipped with a cleaning mechanism (6) located inside the multi-stage screening component (5). Below the cleaning mechanism (6) is a high-pressure spraying mechanism (7) for rinsing the inside of the multi-stage screening component (5). The top of the inner cavity of the sorting box (1) is equipped with multiple sets of external rinsing mechanisms (8) for rinsing the outer wall of the multi-stage screening component (5). The cleaning mechanism (6) cleans the garbage attached to the inside of the multi-stage screening component (5).

2. The kitchen waste impurity sorting device with multi-stage drum screening according to claim 1, characterized in that: The multi-stage screening assembly (5) includes a screening drum (51). The outer side of the screening drum (51) is provided with a first screen hole area (52), a second screen hole area (53) and a third screen hole area (54) in sequence from one end to the other. Multiple sets of bearings (57) are installed on the outer side of the screening drum (51) at equal intervals. The multiple sets of bearings (57) are alternately arranged with the first screen hole area (52), the second screen hole area (53) and the third screen hole area (54). One end of the screening drum (51) is provided with a feed hole (55) for feeding kitchen waste. Multiple sets of blades (58) for pushing kitchen waste are fixedly connected to the inner wall of the screening drum (51).

3. The kitchen waste impurity sorting device with multi-stage drum screening according to claim 2, characterized in that: The power assembly (4) includes a first motor (41) installed on one side of the sorting box (1). The output shaft of the first motor (41) is connected to a rotating shaft (42) that passes through the sorting box (1). A gear (43) is installed at one end of the rotating shaft (42), and a gear ring (56) for the gear (43) to mesh is provided at one end of the screening drum (51).

4. The kitchen waste impurity sorting device with multi-stage drum screening according to claim 3, characterized in that: The cleaning mechanism (6) includes an adjustment component (61) and a support component (63) installed on the top of the inner cavity of the sorting box (1). A drive component (62) is installed on the adjustment component (61). A cleaning component (64) composed of hard bristles for cleaning the inner wall of the screening drum (51) is installed between the drive component (62) and the adjustment component (61).

5. The kitchen waste impurity sorting device with multi-stage drum screening according to claim 4, characterized in that: The support assembly (63) includes a positioning angle plate (631) and a support angle plate (632) integrally formed. Multiple sets of positioning bolts (634) are inserted into the positioning angle plate (631) and bolted to the top of the sorting box (1). The support angle plate (632) is located at the lower end of one side of the positioning angle plate (631), and the connection end between the support angle plate (632) and the positioning angle plate (631) is located in the feed hole (55). Two sets of reinforcing beams (633) are provided on the other side of the positioning angle plate (631). A bushing (635) for the other end of the roller shaft (641) to be inserted is rotatably installed on one side of the support angle plate (632).

6. The kitchen waste impurity sorting device with multi-stage drum screening according to claim 5, characterized in that: The adjustment assembly (61) includes two sets of fixing plates (611) fixedly connected to the top of the sorting box (1), and guide rails (612) are fixedly connected to the upper ends of opposite sides of the two sets of fixing plates (611). Sliding seats (613) are slidably arranged on the two sets of guide rails (612), and a base plate (614) for mounting the second motor (621) is fixedly connected to the lower surface of the sliding seat (613). An adjusting screw (615) for adjusting the position of the base plate (614) is rotatably installed between the two sets of fixing plates (611). A limiting bolt (65) that abuts against the sliding seat (613) is threadedly connected to one side of one set of fixing plates (611).

7. The kitchen waste impurity sorting device with multi-stage drum screening according to claim 6, characterized in that: The high-pressure spraying mechanism (7) includes a high-pressure water pump (71) and an inner tube (74). The high-pressure water pump (71) is installed on one side of the sorting box (1). One end of the inner tube (74) is fixedly connected to the lower end of one side of the support corner plate (632). The water inlet of the high-pressure water pump (71) is connected to a water pumping pipe (72), and the water outlet of the high-pressure water pump (71) is connected to an installation pipe (73) inserted into the inner cavity of the sorting box (1). The installation pipe (73) is provided with a first valve (76) at one end outside the sorting box (1). The other end of the inner tube (74) is fixedly connected to the outside of the installation pipe (73). Multiple sets of first nozzles (75) are symmetrically arranged on the outside of the inner tube (74).

8. The kitchen waste impurity sorting device with multi-stage drum screening according to claim 7, characterized in that: Each of the multiple sets of external rinsing mechanisms (8) includes a shower plate (81) disposed in the inner cavity of the sorting box (1). The lower surface of the shower plate (81) is provided with multiple sets of second nozzles (82), and the upper surface of the shower plate (81) is provided with a water supply pipe (84) penetrating the sorting box (1) and multiple sets of screws (83). A second valve (85) is installed on the water supply pipe (84), and the upper ends of the multiple sets of screws (83) are threaded with two sets of locking nuts (86).

9. A multi-stage drum screen for separating kitchen waste impurities according to claim 8, characterized in that: The inner cavity of the sorting box (1) is fixedly connected to a support frame (14) for installing multiple sets of bearings (57). A transparent window (9) corresponding to the first screen hole area (52), the second screen hole area (53) and the third screen hole area (54) is provided on one side of the sorting box (1). A garbage collection hopper (10) located below the first screen hole area (52), the second screen hole area (53) and the third screen hole area (54) is installed at the bottom of the sorting box (1). A discharge hopper (13) is provided at one end of the lower surface of the sorting box (1). A mounting frame (11) is provided at the bottom of the sorting box (1).

10. A multi-stage drum screen for separating kitchen waste impurities according to claim 8, characterized in that: It also includes a feeding assembly (3), which includes a guide pipe (32) inserted into one end of the upper surface of the sorting box (1). One end of the guide pipe (32) located outside the sorting box (1) is connected to a feed hopper (31), and the other end of the guide pipe (32) passes through the feed hole (55) and is set in the inner cavity of the screening drum (51).

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