Kitchen waste sorting device

Abstract

The application provides a kitchen waste sorting device, and belongs to the technical field of waste treatment. The kitchen waste sorting device comprises a material distribution mechanism, a plurality of plastic cutting members and a double-curved-surface stirrer, and a conical material distribution hopper is provided with an inlet pipe on the side. An air flotation tank is located above the conical material distribution hopper and is in communication with the top of the conical material distribution hopper. The sidewall of the air flotation tank is provided with a discharge pipe. A plastic conveying mechanism is located below the water surface of the air flotation tank at the bottom and is located obliquely above the air flotation tank at the top. A slag discharge mechanism comprises a discharge pipe and a screw conveyor. The integrated kitchen waste sorting device can realize efficient sorting of plastic, waste oil, food residue and waste water. The waste oil and food residue can be recycled, which is conducive to the recycling of kitchen waste and the subsequent solid waste and waste water treatment.

Description

Technical Field

[0001] This utility model relates to the field of waste treatment technology, specifically to a kitchen waste sorting device. Background Technology

[0002] Food waste mainly originates from restaurants, canteens, and daily household life, including leftover food, fruit peels, vegetable leaves, animal offal, tea dregs, and other easily perishable organic waste. Waste oil in food waste has significant recycling value; it can be used to produce biodiesel and aviation kerosene, and can also be made into soap, lubricant, and paint. Therefore, separating and centrally recycling waste oil from food waste can prevent gutter oil from returning to the dining table and reduce water pollution.

[0003] However, sorting food waste is currently quite difficult because it contains a large number of plastic bags, resulting in high sorting costs. Existing sorting equipment requires significant investment and has low efficiency. Summary of the Invention

[0004] In view of the technical problems existing in the background art, this application provides a kitchen waste sorting device, which aims to solve the technical problems of difficulty in sorting plastic bags in kitchen waste and low sorting efficiency.

[0005] In a first aspect, embodiments of this application provide a food waste sorting device, comprising:

[0006] The material distribution mechanism includes a conical material distribution hopper, several plastic cutting parts and a hyperboloid agitator. The several plastic cutting parts are evenly distributed in the conical material distribution hopper near the inner wall. The hyperboloid agitator is axially positioned at the center of the conical material distribution hopper. A feed pipe is provided on the side of the conical material distribution hopper.

[0007] An air flotation tank is located above the conical distribution hopper and is connected to the top of the conical distribution hopper. A discharge pipe is provided on the side wall of the air flotation tank.

[0008] A plastic conveying mechanism, with its bottom located below the water surface of the flotation tank and its top located diagonally above the flotation tank, is used to collect and transport plastics within the flotation tank.

[0009] The slag discharge mechanism includes a discharge pipe and a screw conveyor. The discharge pipe is connected to the bottom of the conical hopper. The feed end of the screw conveyor is located inside the discharge pipe, and the discharge end is located outside the discharge pipe, with the discharge end being higher than the liquid surface of the flotation tank.

[0010] In the technical solution of this application embodiment, during the sorting of kitchen waste, the kitchen waste enters the conical sorting hopper along the feed pipe. Under the action of the hyperboloid agitator, the kitchen waste rotates in a spiral shape in the conical sorting hopper. The solid matter is pushed towards the inner wall of the conical sorting hopper under the action of water. Near the inner wall, there are several plastic cutting pieces used to cut the plastic bags in the kitchen waste, separating the solid matter wrapped in the plastic bags. On the other hand, the plastic bags are relatively light, while the food residue in the kitchen waste has a relatively high density. Under the action of swirling, the food residue flows downward and is sent out through the slag discharge mechanism; the less dense plastic bags and grease flow upward under the action of buoyancy and enter the flotation tank, realizing the sorting of plastic bags and grease from food residue; the plastic conveying mechanism separates the floating plastic bag fragments from the grease during the rotation process.

[0011] Preferably, the side wall of the flotation tank is provided with an oil-water separation tank, which is connected to the flotation tank through a discharge port. The oil-water separation tank is provided with a baffle, the top of which is flush with the top of the oil-water separation tank, and a water inlet channel between the bottom of the baffle and the bottom of the oil-water separation tank. The side wall of the oil-water separation tank is provided with a water outlet pipe and an oil outlet pipe.

[0012] A filter screen is installed on the water outlet.

[0013] In the technical solution of this application embodiment, waste oil floats on the top of the oil-water separation tank and is discharged from the oil outlet pipe, realizing the centralized recovery of waste oil; the wastewater at the bottom, which does not contain oil, enters the cavity between the baffle and the oil-water separation tank through the water inlet channel, realizing the separation of wastewater and waste oil, and the wastewater is discharged from the water outlet pipe.

[0014] Preferably, the plastic cutting component includes a first rotating shaft, a first rotating drive component, and a plurality of blades fixedly connected to the rotating shaft.

[0015] In the technical solution of this application embodiment, the first rotating shaft drives the blade to rotate and cut the plastic bag. Multiple sets of plastic cutting parts are set in the conical hopper, which is conducive to cutting the plastic into small pieces and to fully separating the plastic from the food residue.

[0016] Preferably, the feed end of the screw conveyor is provided with a collection hopper, the upper part of the collection hopper is fixedly connected to the inner wall of the discharge pipe, the bottom of the collection hopper is provided with several mesh holes, the collection hopper is inclined, and the discharge end of the collection hopper is higher than the feed end.

[0017] In the technical solution of this application embodiment, food residue falls into the collection hopper, water is discharged from the mesh at the bottom of the collection hopper, and solid food residue is discharged under the action of the screw, thereby realizing the separation of solid food residue and liquid in kitchen waste.

[0018] Preferably, the plastic conveying mechanism includes a plastic conveyor belt with several rows of rake teeth evenly arranged on it. Each row of rake teeth includes several rake rods evenly arranged in a straight line direction, and the arrangement direction of the rake rods is perpendicular to the conveying direction of the plastic conveyor belt.

[0019] In the technical solution of this application embodiment, rake teeth are provided on the plastic conveyor belt to intercept plastic fragments and allow waste oil to flow down from the gaps in the rake teeth, thereby separating the plastic fragments from the waste oil.

[0020] Preferably, the top of the plastic conveying mechanism is provided with a plastic removal mechanism, which includes a second rotating shaft, a second rotating drive and a plurality of rows of teeth. Each row of teeth includes a plurality of levers evenly arranged along the axial direction of the second rotating shaft, and the plurality of teeth are evenly fixedly connected to the second rotating shaft in the circumferential direction.

[0021] The lever is located between two adjacent rake teeth.

[0022] In the technical solution of this application embodiment, when the plastic conveying mechanism conveys the plastic fragments to the top, the plastic removal mechanism removes the plastic pieces adhering to the rake teeth, thereby collecting the plastic fragments.

[0023] Preferably, the hyperboloid mixer includes a third rotating shaft, a third rotary drive, and a turbine-shaped impeller, the turbine-shaped impeller being fixedly connected to the bottom of the third rotating shaft and located below the plastic cutter.

[0024] In the technical solution of this application embodiment, a good vortex can be formed in the conical hopper by using a hyperboloid stirrer. By controlling the rotation speed of the hyperboloid stirrer, the vortex can be controlled at a suitable flow rate, so that plastic fragments and food residues can be separated.

[0025] Preferably, a microbubble generator is installed at the bottom of the flotation tank.

[0026] In the technical solution of this application embodiment, the microbubble generator produces a large number of microbubbles, which is beneficial for capturing waste oil in kitchen waste and promoting the floating of waste oil, thereby improving the recovery rate of waste oil.

[0027] Preferably, a number of nozzles are provided above the plastic conveying mechanism.

[0028] In the technical solution of this application embodiment, a nozzle is provided above the plastic conveying mechanism for spraying water, which can clean the grease on the plastic fragments and prevent the plastic fragments from carrying out too much waste grease.

[0029] Preferably, the feed pipe is located in the middle of the conical feed hopper.

[0030] The advantages of this application, which differ from existing technical solutions, include:

[0031] This application first separates plastics, waste oil, and food scraps through a material separation mechanism. Plastics and waste oil float to the surface and enter a flotation tank, while food scraps flow downwards into a slag discharge mechanism. An oil-water separation mechanism further separates waste oil, wastewater, and plastic fragments, achieving the separation of waste oil and plastic fragments. The slag discharge mechanism separates food scraps and wastewater. This utility model achieves efficient separation of plastics, waste oil, food scraps, and wastewater through an integrated kitchen waste sorting device. Both waste oil and food scraps can be recycled, which is beneficial for the resource utilization of kitchen waste and subsequent solid waste and wastewater treatment.

[0032] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in this application will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0034] Figure 1 This is a cross-sectional structural diagram of the food waste sorting device in the embodiments of this application;

[0035] Figure 2 This is a top view of the kitchen waste sorting device in the embodiments of this application;

[0036] Figure 3 This is a schematic diagram of the plastic cutter and hyperboloid mixer structure in the embodiments of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Material distribution mechanism; 101. Conical hopper; 102. Feed pipe; 103. Plastic cutting component; 1031. First rotating shaft; 1032. Drive motor; 1033. Blade; 1034. Drive gear; 1035. Driven gear; 104. Hyperboloid agitator; 1041. Third rotating shaft; 1042. Turbine impeller; 2. Flotation tank; 201. Microbubble generator; 202. Oil-water separator; 203. Baffle; 204. Water outlet pipe; 205. Oil outlet pipe; 3. Slag discharge mechanism; 301. Discharge pipe; 302. Screw conveyor; 4. Plastic conveying mechanism; 401. Plastic conveyor belt; 402. Rake teeth; 403. Plastic cleaning mechanism; 4031. Second rotating shaft; 4032. Paddle teeth; 5. Nozzle. Detailed Implementation

[0039] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0041] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0043] A food waste sorting device, such as Figure 1 As shown, it includes a material distribution mechanism 1, an air flotation tank 2 above the material distribution mechanism 1, and a slag discharge mechanism 3 below the material distribution mechanism 1.

[0044] like Figure 1 As shown, the material distribution mechanism 1 includes a conical material distribution hopper 101, a feed pipe 102 is provided in the middle of the side wall of the conical material distribution hopper 101, a number of plastic cut pieces 103 are evenly distributed near the inner wall of the conical material distribution hopper 101, and a hyperboloid agitator 104 is provided at the bottom.

[0045] like Figure 2 , Figure 3As shown, the plastic cutting component 103 includes a first rotating shaft 1031, a first rotary drive component, and blades 1033 uniformly fixed on the first rotating shaft 1031. The first rotary drive component is a drive motor 1032. The first rotating shaft 1031 is rotatably connected to the inner wall of the conical hopper 101. The top of the first rotating shaft 1031 is located outside the flotation tank 2, and a driven gear 1035 is fixedly connected to the top. The top of the flotation tank 2 is provided with a cover plate, and a drive gear 1034 is rotatably connected to the cover plate. A drive shaft is fixedly connected to the center of the drive gear 1034, and the drive motor 1032 is fixedly connected above the drive shaft. The driven gear 1035 meshes with the drive gear 1034, and the drive motor 1032 drives the drive gear 1034 to rotate, thereby driving the driven gear 1035 and the blades 1033 on the first rotating shaft 1031 to rotate, thus cutting the plastic bag.

[0046] like Figure 3 As shown, the hyperboloid mixer 104 includes a third rotating shaft 1041, a third rotary drive component, and a turbine-shaped impeller 1042. The turbine-shaped impeller 1042 is fixedly connected to the bottom of the third rotating shaft 1041 and located below the plastic cutter 103. In this embodiment, the third rotary drive component is a drive motor 1032, which simultaneously drives the third rotating shaft 1041 and the drive shaft to rotate. The rotation of the turbine-shaped impeller 1042 creates a swirling flow within the conical hopper 101. Food waste is subjected to a hyperboloid mixer 104 and rotates in a conical hopper 101 in a spiral motion. The solid matter in the food waste is pushed to the inner wall of the conical hopper 101 by hydraulic action. Under the action of the plastic cutter 103, the plastic bags in the food waste are shredded. On the one hand, the solid matter wrapped in the plastic bags is separated out. On the other hand, the plastic bags are relatively light, while the food residue in the food waste has a relatively high density. Under the action of swirling flow, the food residue flows downward and is sent out through the slag discharge mechanism 3. The less dense plastic bags and grease flow upward under the action of buoyancy and enter the flotation tank 2, realizing the separation of plastic bags and grease from food residue.

[0047] like Figure 1As shown, the flotation tank 2 is located above the conical hopper 101 and is connected to the top of the conical hopper 101. Waste oil and plastic bags separated in the conical hopper 101 float to the flotation tank 2. A microbubble generator 201 is installed at the bottom of the flotation tank 2. The microbubble generator 201 produces a large number of microbubbles, which is beneficial for capturing waste oil in kitchen waste and promoting the floating of waste oil, thereby improving the waste oil recovery rate. An oil-water separation tank 202 is installed on the side wall of the flotation tank 2. The oil-water separation tank 202 is connected to the flotation tank 2 through a discharge port. A baffle 203 is installed inside the oil-water separation tank 202. The top of the baffle 203 is flush with the top of the oil-water separation tank 202, and a water inlet channel is provided between the bottom of the baffle 203 and the bottom of the oil-water separation tank 202. An outlet pipe 204 and an oil outlet pipe 205 are installed on the side wall of the oil-water separation tank 202. The oil outlet pipe 205 is higher than the outlet pipe 204. Waste oil floats on top and is discharged from the oil outlet pipe 205, achieving centralized recycling of waste oil; the oil-free wastewater at the bottom enters the cavity between the baffle 203 and the oil-water separation tank 202 through the water inlet channel, achieving separation of wastewater and waste oil, and the wastewater is discharged from the water outlet pipe 204.

[0048] like Figure 1 , Figure 2 As shown, a plastic conveying mechanism 4 is installed inside the flotation tank 2. The bottom of the plastic conveying mechanism 4 is located below the water surface of the flotation tank 2, and the top is located diagonally above the flotation tank 2. It is used to collect and transport plastic in the flotation tank 2. The plastic conveying mechanism 4 includes a plastic conveyor belt 401, on which several rows of rake teeth 402 are evenly arranged. Each row of rake teeth 402 includes several rake rods evenly arranged in a straight line, and the arrangement direction of the rake rods is perpendicular to the conveying direction of the plastic conveyor belt 401. The rake teeth 402 on the plastic conveying mechanism 4 can intercept plastic fragments, and waste oil flows down from the gaps in the rake teeth 402, thus separating the plastic fragments from the waste oil. A plastic removal mechanism 403 is provided at the top of the plastic conveyor belt 401. The plastic removal mechanism 403 includes a second rotating shaft 4031, a second rotating drive component, and several rows of rake teeth 4032. Each row of rake teeth 4032 includes several levers evenly arranged along the axial direction of the second rotating shaft 4031. The rake teeth 4032 are evenly fixedly connected to the second rotating shaft 4031 circumferentially. The levers are located between two adjacent rake teeth 402. When the plastic conveyor belt 401 conveys plastic fragments to the top, the plastic removal mechanism 403 removes the plastic pieces adhering to the rake teeth 402, allowing the plastic pieces to fall into the subsequent collection device, thus collecting the plastic fragments. Several nozzles 5 are provided above the plastic conveyor belt 401 for spraying water, which can clean the grease on the plastic fragments and prevent the plastic fragments from carrying away too much waste grease.

[0049] like Figure 1As shown, the bottom of the conical hopper 101 is equipped with a slag discharge mechanism 3, which includes a discharge pipe 301 and a screw conveyor 302. The discharge pipe 301 is connected to the bottom of the conical hopper 101. The feed end of the screw conveyor 302 is located inside the feed pipe 102, and the discharge end is located outside the discharge pipe 301, and is higher than the liquid level of the flotation tank 2. Food scraps fall into the feed end of the screw conveyor 302, and solid food scraps are discharged under the action of the screw, realizing the separation of solid food scraps and wastewater in kitchen waste.

[0050] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A kitchen waste sorting device, characterized in that, include: The material distribution mechanism (1) includes a conical material distribution hopper (101), a plurality of plastic cutting parts (103) and a hyperboloid agitator (104). The plurality of plastic cutting parts (103) are evenly distributed in the conical material distribution hopper (101) near the inner wall. The hyperboloid agitator (104) is axially arranged at the center of the conical material distribution hopper (101). The conical material distribution hopper (101) is provided with a feed pipe (102) on the side. The air flotation tank (2) is located above the conical distribution hopper (101) and is connected to the top of the conical distribution hopper (101). The side wall of the air flotation tank (2) is provided with a discharge port. Plastic conveying mechanism (4), the bottom of which is located below the water surface of the flotation tank (2) and the top of which is located diagonally above the flotation tank (2), is used to collect and transport plastic in the flotation tank (2); The slag discharge mechanism (3) includes a discharge pipe (301) and a screw conveyor (302). The discharge pipe (301) is connected to the bottom of the conical hopper (101). The feed end of the screw conveyor (302) is located inside the discharge pipe (301), and the discharge end is located outside the discharge pipe (301). The discharge end is higher than the liquid level of the flotation tank (2).

2. The kitchen waste sorting device according to claim 1, characterized in that, The side wall of the flotation tank (2) is provided with an oil-water separation tank (202). The oil-water separation tank (202) is connected to the flotation tank (2) through a discharge port. The oil-water separation tank (202) is provided with a baffle (203). The top of the baffle (203) is flush with the top of the oil-water separation tank (202). The bottom of the baffle (203) is provided with a water inlet channel between it and the bottom of the oil-water separation tank (202). The side wall of the oil-water separation tank (202) is provided with a water outlet pipe (204) and an oil outlet pipe (205).

3. The kitchen waste sorting device according to claim 1, characterized in that, The plastic cutting component (103) includes a first rotating shaft (1031), a first rotating drive component, and a plurality of blades (1033) fixedly connected to the first rotating shaft (1031).

4. The kitchen waste sorting device according to claim 1, characterized in that, The screw conveyor (302) is equipped with a hopper at the feed end, and the upper part of the hopper is fixedly connected to the inner wall of the discharge pipe (301).

5. The kitchen waste sorting device according to claim 1, characterized in that, The plastic conveying mechanism (4) includes a plastic conveyor belt (401), on which several rows of rake teeth (402) are evenly arranged. Each row of rake teeth (402) includes several rake rods evenly arranged in a straight line direction. The arrangement direction of the several rake rods is perpendicular to the conveying direction of the plastic conveyor belt (401).

6. The kitchen waste sorting device according to claim 5, characterized in that, The top of the plastic conveyor belt (401) is provided with a plastic removal mechanism (403). The plastic removal mechanism (403) includes a second rotating shaft (4031), a second rotating drive component, and several rows of teeth (4032). Each row of teeth (4032) includes several levers evenly arranged along the axial direction of the second rotating shaft (4031). Several teeth (4032) are evenly fixedly connected to the second rotating shaft (4031) in the circumferential direction. The lever is located between two adjacent rake teeth (402).

7. The kitchen waste sorting device according to claim 1, characterized in that, The hyperboloid mixer (104) includes a third rotating shaft (1041), a third rotary drive and a turbine impeller (1042), the turbine impeller (1042) being fixedly connected to the bottom of the third rotating shaft (1041) and located below the plastic cutter (103).

8. The kitchen waste sorting device according to claim 1, characterized in that, The bottom of the flotation tank (2) is equipped with a microbubble generator (201).

9. The kitchen waste sorting device according to claim 1, characterized in that, Several nozzles (5) are provided above the plastic conveying mechanism (4).

10. The kitchen waste sorting device according to claim 1, characterized in that, The feed pipe (102) is located in the middle of the conical feed hopper (101).

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