A sterilization device for food waste treatment

Abstract

This utility model relates to the field of waste treatment technology and proposes a sterilization device for treating kitchen waste, comprising: an outer barrel; an inner barrel disposed inside the outer barrel and a barrel cover disposed above the outer barrel; sealing bolts are provided on the inner wall of the barrel cover, and the outer barrel and the barrel cover are fixed together by the sealing bolts; multiple sets of steam pipes are disposed inside the inner barrel, and the ends of the steam pipes are provided with air outlets. After the material is fed into the vertical sterilization chamber through the feed inlet, the drive motor starts, driving the central rotating shaft and its multi-layer stirring components to rotate at high speed. The crushing arm on the stirring mechanism fully disperses the material and scatters it radially, distributing it evenly within the chamber. At the same time, high-temperature steam is injected in a high-speed swirling form through steam spray pipes arranged tangentially to the chamber, performing all-round instantaneous and efficient mixing with the scattered fine material particles, rapidly transferring heat to every part of the material, thereby achieving the purpose of rapid and uniform sterilization.

Description

Technical Field

[0001] This utility model belongs to the field of waste treatment technology, specifically relating to a sterilization device for treating kitchen waste. Background Technology

[0002] Food waste treatment refers to the centralized collection, transportation, and harmless, resource-oriented disposal of catering waste and household kitchen waste. Its core lies in removing impurities and killing pathogens through pretreatment methods such as sorting, crushing, and sterilization. Then, technologies such as anaerobic fermentation to produce biogas, aerobic composting, or insect farming are used to convert organic waste into renewable resources such as biogas, biodiesel, organic fertilizer, or protein feed, ultimately achieving the comprehensive environmental goals of waste reduction, pollution elimination, and energy recovery.

[0003] A known authorized patent with application number 201921690244.1 discloses a pretreatment device for kitchen waste, comprising an upper cavity and a lower cavity located below the upper cavity, and a flow guiding mechanism connecting the upper and lower cavities. A stirring mechanism is installed in the upper cavity, and a feeding mechanism is installed on the outside of the upper cavity. The feeding mechanism includes a feeding hopper located on the outside of the upper cavity, and a hopper cover covering the feeding inlet of the feeding hopper. The inner end of the hopper cover is hinged to the upper cavity, and the outer end extends downward with an L-shaped barb. A filtering mechanism and a heating mechanism are installed in the lower cavity. The heating mechanism includes a mounting base, a connecting plate mounted on the mounting base, and heating elements arranged on the connecting plate. The mounting base is located on the inner side of the lower cavity. This solution uses the upper cavity to stir, cut, and clean the kitchen waste, separating water-soluble contaminants. The kitchen waste is then filtered and temporarily stored in the lower cavity by the filtering mechanism, and finally sterilized at high temperature by the heating mechanism to obtain the treated kitchen waste.

[0004] However, the following problems were found in the implementation of the relevant technology: the device uses an external heating component to heat the processing tank, but in actual use, the external heating efficiency is low and it is difficult to quickly heat the waste inside the equipment to the sterilization temperature.

[0005] Therefore, a sterilization device for food waste treatment is proposed to solve the above problems. Utility Model Content

[0006] This invention proposes a sterilization device for treating kitchen waste, which solves the problem in related technologies where the device uses an external heating component to heat the treatment bin. However, in actual use, the external heating is inefficient and it is difficult to quickly heat the waste inside the device to the sterilization temperature.

[0007] The technical solution of this utility model is as follows: A sterilization device for treating kitchen waste, comprising: Outer drum; The inner bucket is located inside the outer bucket, and the bucket lid is located on top of the outer bucket; The inner wall of the bucket lid is provided with sealing bolts, and the outer bucket and the bucket lid are fixed together by the sealing bolts; The inner tub is equipped with multiple sets of steam pipes, each with an outlet at its end. The outlet is located inside the inner tub, and the steam pipes are arranged along the tangential direction inside the inner tub. The input end of the steam pipe is located between the outer tub and the inner tub. The inner barrel is equipped with a stirring assembly for stirring and crushing materials.

[0008] Preferably, the steam pipe is provided with a one-way valve inside, and a filter screen is provided at the output end of the steam pipe. The one-way valve is close to the input end of the steam pipe, and the opening of the one-way valve is close to the filter screen.

[0009] Preferably, the stirring assembly includes a central shaft disposed inside the inner tank, two sets of blades disposed on the outer wall of the central shaft, the two sets of blades being disposed opposite to each other, and multiple sets of crushing arms disposed on the outer wall of the central shaft, the crushing arms being disposed in an alternating and symmetrical manner, each set of crushing arms being located above the blades, and an impact head being disposed at the end of the crushing arm.

[0010] Preferably, a drive motor is provided at the top of the inner barrel, and the output end of the drive motor is fixedly connected to the central shaft; The outer wall of the bucket lid is provided with a sealing cap, and the inner wall of the sealing cap is connected to the central shaft to seal the inner bucket. The sealing cap and the bucket lid are connected by fixing screws.

[0011] Preferably, a fixed ball is provided at the end of the central shaft, and a fixed bottom is provided inside the inner barrel, with the outer wall of the fixed bottom in contact with the fixed ball.

[0012] Preferably, the outer tub has multiple support blocks inside, and the other side of each support block contacts the inner tub to support the inner tub. An insulation layer is provided between the outer tub and the inner tub to keep the inner tub warm. The outer wall of the outer barrel is provided with an air inlet pipe for connecting to a steam source.

[0013] Preferably, the outer wall of the inner barrel is provided with a discharge port, the discharge port is provided with a first sealing valve, and the discharge port penetrates the outer barrel; The outer wall of the barrel lid is provided with a feed inlet, which is connected to the inner barrel, and the outer wall of the feed inlet is provided with a second sealing valve.

[0014] Preferably, a pressure sensor is provided at the top of the lid to detect the pressure inside the inner bucket, a pressure relief valve is provided at the top of the lid, and a temperature sensor is provided at the top of the lid.

[0015] The working principle and beneficial effects of this utility model are as follows: After the material is fed into the vertical sterilization chamber through the feed inlet, the drive motor starts, causing the central rotating shaft and its multi-layer stirring components to rotate at high speed. The crushing arms on the stirring components fully disperse the material and scatter it radially, distributing it evenly within the chamber. At the same time, high-temperature steam is injected in a high-speed swirling manner through steam spray pipes arranged tangentially to the chamber, instantly and efficiently mixing with the scattered fine material particles, rapidly transferring heat to every part of the material, thereby achieving rapid and uniform sterilization. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional three-dimensional structural diagram of the outer barrel of this utility model; Figure 3 This is a three-dimensional structural diagram of the stirring assembly of this utility model; Figure 4 This is a cross-sectional structural diagram of the steam pipe of this utility model.

[0018] In the diagram: 1. Outer barrel; 2. Barrel lid; 3. Sealing bolt; 4. Inner barrel; 5. Steam pipe; 7. Air outlet; 8. Central shaft; 9. Paddle; 10. Crusher arm; 11. Impact head; 12. Fixed ball; 13. Sealing cover; 14. Drive motor; 15. Pressure relief valve; 16. Pressure sensor; 17. Temperature sensor; 18. Feed inlet; 19. Air inlet pipe; 20. Discharge outlet; 21. First sealing valve; 22. Second sealing valve; 23. Fixing screw; 24. One-way valve; 25. Filter screen; 26. Fixed bottom; 27. Support block; 28. Insulation layer. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0020] Implementation Please see Figure 1 -4. A sterilization device for treating kitchen waste, comprising: Outer bucket 1; The inner bucket 4 is located inside the outer bucket 1, and the bucket lid 2 is located above the outer bucket 1; The inner wall of the bucket lid 2 is provided with sealing bolts 3, and the outer bucket 1 and the bucket lid 2 are fixed together by the sealing bolts 3; The inner barrel 4 is equipped with multiple sets of steam pipes 5. The steam pipes 5 are equipped with an outlet 7 at their ends. The outlet 7 is located inside the inner barrel 4. The steam pipes 5 are arranged along the tangential direction inside the inner barrel 4. The input end of the steam pipes 5 is located between the outer barrel 1 and the inner barrel 4. The inner barrel 4 is equipped with a stirring component for stirring and crushing materials; The steam pipe 5 is equipped with a one-way valve 24 inside, and a filter screen 25 is provided at the output end of the steam pipe 5. The one-way valve 24 is close to the input end of the steam pipe 5, and the opening of the one-way valve 24 is close to the filter screen 25. The mixing assembly includes a central shaft 8 disposed inside the inner tank 4. Two sets of blades 9 are disposed on the outer wall of the central shaft 8. The two sets of blades 9 are disposed opposite to each other. Multiple sets of crushing arms 10 are disposed on the outer wall of the central shaft 8. The crushing arms 10 are disposed in an alternating and symmetrical manner. Each set of crushing arms 10 is located above the blades 9. An impact head 11 is disposed at the end of the crushing arm 10. A drive motor 14 is installed at the top of the inner barrel 4, and the output end of the drive motor 14 is fixedly connected to the central shaft 8. The outer wall of the bucket lid 2 is provided with a sealing cover 13. The inner wall of the sealing cover 13 is connected to the central shaft 8 to seal the inner bucket 4. The sealing cover 13 and the bucket lid 2 are connected by fixing screws 23. The outer tub 1 has multiple support blocks 27 inside, and the other side of the support block 27 is in contact with the inner tub 4 to support the inner tub 4. An insulation layer 28 is provided between the outer tub 1 and the inner tub 4 to keep the inner tub 4 warm. An air inlet pipe 19 is provided on the outer wall of the outer barrel 1 for connecting to a steam source; The outer wall of the inner barrel 4 is provided with a discharge port 20, and the discharge port 20 is provided with a first sealing valve 21 inside. The discharge port 20 penetrates the outer barrel 1. The outer wall of the lid 2 is provided with a feed inlet 18, which is connected to the inner barrel 4. The outer wall of the feed inlet 18 is provided with a second sealing valve 22. A pressure sensor 16 is installed at the top of the lid 2 to detect the pressure inside the inner bucket 4. A pressure relief valve 15 is installed at the top of the lid 2, and a temperature sensor 17 is installed at the top of the lid 2.

[0021] The technical solution provided in this embodiment is as follows: During use, waste is first injected into the equipment through the feed inlet 18. After the waste is injected, the second sealing valve 22 is closed. Then, the air inlet pipe 19 is connected to a high-temperature steam source. The drive motor 14 is then started, driving the central shaft 8 to rotate. The central shaft 8 drives the crushing arm 10 and the blade 9 to rotate. The crushing arm 10 on the mixing mechanism fully disperses the material and scatters it radially, forming a uniform distribution within the cavity. Simultaneously, the impact head 11 crushes harder materials such as bones. High-temperature steam enters the outer barrel 1 through the air inlet pipe 19 and is then ejected through the steam pipe 5. The high-temperature steam is injected in a high-speed swirling form through vortex steam nozzles arranged tangentially to the cavity, achieving comprehensive, instantaneous, and efficient mixing with the scattered fine material particles. This rapidly transfers heat to every part of the material, thereby achieving… For rapid and uniform sterilization, the insulation layer 28 between the outer barrel 1 and the inner barrel 4 reduces heat loss from the inner barrel 4, allowing the temperature of the inner barrel 4 to be maintained for a longer period of time. After continuous heating for a period of time, the steam source is turned off, and then the pressure is reduced to the same as atmospheric pressure through the pressure relief valve 15. After that, the sterilized waste can be discharged through the discharge port 20. During use, the pressure inside the barrel can be known in time through the pressure sensor 16 to avoid excessive pressure. The internal temperature of the equipment can be sensed through the temperature sensor 17. The one-way valve 24 and the filter screen 25 can prevent the material inside the inner barrel 4 from entering the interior of the outer barrel 1, which would cause the steam pipe 5 to be blocked. When maintenance is required, the barrel cover 2 can be removed through the sealing bolt 3 to take out the stirring component for cleaning and maintenance. At the same time, the sealing cover 13 can be removed through the fixing screw 23 for maintenance to ensure the airtightness of the sealing cover 13.

[0022] Furthermore, a fixed ball 12 is provided at the end of the central shaft 8, and a fixed bottom 26 is provided inside the inner barrel 4, with the outer wall of the fixed bottom 26 in contact with the fixed ball 12.

[0023] Specifically, by setting up the fixed ball 12 and the fixed base 26, the central shaft 8 can be kept stable during rotation, avoiding wobbling during high-speed rotation.

[0024] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sterilization device for treating kitchen waste, characterized in that, include: Outer barrel (1); The inner bucket (4) is set inside the outer bucket (1) and the bucket lid (2) is set above the outer bucket (1); The inner wall of the bucket lid (2) is provided with sealing bolts (3), and the outer bucket (1) and the bucket lid (2) are fixed together by the sealing bolts (3); The inner barrel (4) is provided with multiple sets of steam pipes (5), and the steam pipes (5) are provided with an outlet (7) at the end. The outlet (7) is located inside the inner barrel (4), and the steam pipes (5) are arranged along the tangential direction inside the inner barrel (4). The input end of the steam pipes (5) is located between the outer barrel (1) and the inner barrel (4). The inner barrel (4) is equipped with a stirring component for stirring and crushing materials.

2. The sterilization device for treating kitchen waste according to claim 1, characterized in that: The steam pipe (5) is provided with a one-way valve (24) inside, and a filter screen (25) is provided at the output end of the steam pipe (5). The one-way valve (24) is close to the input end of the steam pipe (5), and the opening of the one-way valve (24) is close to the filter screen (25).

3. The sterilization device for treating kitchen waste according to claim 1, characterized in that: The stirring assembly includes a central shaft (8) disposed inside the inner barrel (4). The outer wall of the central shaft (8) is provided with two sets of blades (9), which are arranged opposite to each other. The outer wall of the central shaft (8) is provided with multiple sets of crushing arms (10), which are arranged in an alternating symmetrical manner. Each set of crushing arms (10) is located above the blades (9), and an impact head (11) is provided at the end of each crushing arm (10).

4. The sterilization device for kitchen waste treatment according to claim 3, characterized in that: The top of the inner barrel (4) is provided with a drive motor (14), and the output end of the drive motor (14) is fixedly connected to the central shaft (8). The outer wall of the bucket lid (2) is provided with a sealing cover (13). The inner wall of the sealing cover (13) is connected to the central shaft (8) to seal the inner bucket (4). The sealing cover (13) and the bucket lid (2) are connected by fixing screws (23).

5. A sterilization device for treating kitchen waste according to claim 3, characterized in that: A fixed ball (12) is provided at the end of the central shaft (8), and a fixed bottom (26) is provided inside the inner barrel (4). The outer wall of the fixed bottom (26) is in contact with the fixed ball (12).

6. A sterilization device for treating kitchen waste according to claim 1, characterized in that: The outer barrel (1) is provided with a plurality of support blocks (27) inside. The other side of the support block (27) is in contact with the inner barrel (4) to support the inner barrel (4). An insulation layer (28) is provided between the outer barrel (1) and the inner barrel (4) to keep the inner barrel (4) warm. The outer wall of the outer barrel (1) is provided with an air inlet pipe (19) for connecting to a steam source.

7. A sterilization device for treating kitchen waste according to claim 1, characterized in that: The outer wall of the inner barrel (4) is provided with a discharge port (20), and the discharge port (20) is provided with a first sealing valve (21) inside. The discharge port (20) penetrates the outer barrel (1). The outer wall of the lid (2) is provided with a feed inlet (18), which is connected to the inner barrel (4). The outer wall of the feed inlet (18) is provided with a second sealing valve (22). 8.The sterilization device for kitchen waste treatment of claim 1, characterized in that: A pressure sensor (16) is provided at the top of the lid (2) to detect the pressure inside the inner barrel (4). A pressure relief valve (15) is provided at the top of the lid (2). A temperature sensor (17) is provided at the top of the lid (2).

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