Method and device for aerobic fermentation of non-free oil and fat-rich perishable garbage

Abstract

The present application belongs to the technical field of perishable garbage resource processing, and particularly relates to a method and device for aerobic fermentation of perishable garbage rich in non-free oil, which comprises the following steps: S1: adding the perishable garbage rich in non-free oil into a centrifugal barrel of a treatment box, and then removing part of free water in the perishable garbage rich in non-free oil through centrifugal treatment to collect residues; and S2: placing the residues obtained in step S1 into a constant-temperature blast drying cavity, and evaporating the residues at an evaporation temperature in the range of 35-90 DEG C. The present application changes the occurrence form of non-free oil by using non-free water evaporation, breaks the isolation of oxygen molecules, significantly improves the utilization efficiency of oxygen molecules in aerobic fermentation of perishable garbage rich in non-free oil, enriches high-temperature functional bacteria such as bacillus, urea bacillus and thermophilic actinomycetes, shortens the fermentation period by 28.6%, increases the seed germination index of the compost product by 43.8%, and increases the humus content by 23.1%.

Description

Technical Field

[0001] This invention belongs to the field of resource utilization technology for perishable waste, specifically a method and apparatus for aerobic fermentation of perishable waste rich in non-free oil. Background Technology

[0002] Perishable waste (such as kitchen waste and food scraps) is a significant component of urban household waste, with a massive annual output. It is characterized by high organic matter content, high moisture content, and easy decomposition and foul odor. Improper handling will cause serious pollution to the ecological environment and result in a large waste of organic resources. Aerobic fermentation (equivalent to composting in engineering) is a mature organic solid waste resource utilization technology that can convert the organic matter in perishable waste into humus, achieving volume reduction and resource recovery, and ultimately producing recyclable organic fertilizer. It is one of the important means of treating perishable waste currently.

[0003] However, perishable waste is often rich in non-free oils, which typically form stable complex structures with organic particles, water, and microbial cells in the form of emulsification, adsorption, or binding, making them difficult to remove effectively by solid-liquid separation methods such as centrifugation and pressure filtration. During aerobic fermentation, the presence of non-free oils forms a dense oil film, hindering the diffusion of oxygen within the fermentation system and severely inhibiting the metabolic activity of aerobic microorganisms. This ultimately leads to problems such as slow fermentation temperature rise, long composting period, and poor product quality.

[0004] Existing technologies mainly improve fermentation effects by adding conditioners, increasing aeration intensity, increasing turning frequency, or adding functional microbial agents. However, these methods generally suffer from high energy consumption, increased operating costs, limited treatment effects, or insufficient stability. Meanwhile, research and applications on regulating and enhancing aerobic fermentation by controlling the state of non-free oils are still relatively limited. Therefore, this invention provides a method and apparatus for aerobic fermentation of perishable waste rich in non-free oils. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A method for aerobic fermentation of easily perishable waste rich in non-free oils, comprising the following steps: S1: By adding perishable waste rich in non-free grease into the centrifuge tank of the treatment box, and then removing some of the free water from the perishable waste rich in non-free grease through centrifugation, the residue is collected. S2: Place the residue obtained in step S1 in a constant temperature forced-air drying chamber, and the evaporation temperature range involved in the evaporation treatment is 35~90℃; S3: Transfer the material processed in step S2 to a 15L horizontal aerobic fermentation device for aerobic fermentation, with a stirring rate of 1-5 r / min.

[0007] In step S1, the centrifugation process involves a centrifugal force of 2000~6000 g, and in step S2, the evaporation process involves an evaporation time range of 30~150 min.

[0008] The method of using the processing box includes the following steps: A1: The moving baffle is moved away from the feed hole, and then the centrifuge barrel is driven to move upward by the hydraulic rod so that the centrifuge barrel is higher than the feed hole. Then the perishable waste is poured into the centrifuge barrel and then the centrifuge barrel enters the processing chamber. A2: Seal the through hole with the sealing plate, then centrifuge the perishable waste. After centrifugation, remove the sealing plate from the through hole and then let the centrifuge bucket enter the constant temperature blower drying chamber to evaporate the residue. A3: After the residue has evaporated, raise the centrifuge barrel above the feed port, then release the clamp from the slot, and remove the centrifuge barrel for further processing of the residue.

[0009] An aerobic fermentation device for perishable waste rich in non-free oils, applicable to the aforementioned method for aerobic fermentation of perishable waste rich in non-free oils, is characterized in that: a constant-temperature blower drying chamber is located within a processing box; the processing box contains a processing cavity; the bottom surface of the constant-temperature blower drying chamber has a through hole communicating with the processing cavity; the side wall of the processing box has a set of air outlets communicating with the constant-temperature blower drying chamber; a pair of air inlet pipes communicating with the constant-temperature blower drying chamber are provided on the side of the processing box away from the air outlets; a hydraulic rod is fixedly connected within the processing cavity; a motor is provided at the output end of the hydraulic rod; the motor drives a centrifuge drum to rotate; the centrifuge drum consists of a filter screen and a bottom plate; a feed hole is provided on the top surface of the processing box; and a liquid outlet groove communicating with the processing cavity is provided on the bottom surface of the processing box.

[0010] Preferably, the top surface of the processing box is slidably connected to a baffle that seals the feed hole, the bottom surface of the constant temperature blower drying chamber is slidably connected to a sealing plate that seals the through hole, the processing box has an opening, a magnetic block that magnetically attracts the sealing plate is slidably connected in the cavity, and a moving component that controls the movement of the magnetic block is provided in the processing chamber.

[0011] Preferably, the moving component includes an elastic ring fixed to the bottom surface of the processing chamber. The elastic ring has a hollow structure inside. A connecting pipe connects the elastic ring and the cavity. A control valve is installed inside the connecting pipe. A connecting rod is fixedly connected to the side wall of the hydraulic rod output end. A pressure ring is fixedly connected to the bottom surface of the connecting rod.

[0012] Preferably, the output end of the motor is fixedly connected to a connecting column, the connecting column is rotatably connected to the bottom surface of the base plate, a pair of sliding grooves are provided on the side wall of the connecting column, a locking block is slidably connected in the sliding groove, a locking groove is provided on the base plate to engage with the locking block, a spring is fixedly connected between the side of the locking block away from the locking groove and the inner wall of the sliding groove, and a release component is provided in the connecting column to allow the locking block to disengage from the locking groove.

[0013] Preferably, the disengagement assembly includes a round rod rotatably connected to the bottom surface of the base plate, the bottom end of the round rod extending into the connecting post, and a pair of magnetic plates that engage with the locking block fixedly connected to the outer side wall of the round rod.

[0014] Preferably, the centrifuge tank is provided with a cleaning ring for cleaning the filter screen, and a fixing rod is fixedly connected to the top surface of the cleaning ring, and a limit plate is rotatably connected to the top surface of the fixing rod.

[0015] The beneficial effects of this invention are as follows: 1. This invention achieves regulation of the non-free state oil content by combining simple centrifugation with low-temperature evaporation, effectively weakening its hindrance to oxygen molecule transfer and significantly improving the oxygen utilization efficiency of the fermentation system. 2. This invention can promote the rapid enrichment and stable maintenance of high-temperature functional microbial communities, improve the degradation efficiency of organic matter, shorten the fermentation cycle, promote the humification of organic matter, improve the quality of composted products, and significantly enhance the seed germination index and humus content. 3. The process of this invention is simple and easy to operate. Centrifugation and heating evaporation can be completed with just a processing box. No external chemical agents need to be introduced. It has good environmental friendliness and engineering application prospects. It can be widely used in the field of resource treatment of food waste, kitchen waste and other organic waste rich in non-free oil. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 and Figure 2 This is a flowchart of the method in this invention; Figure 3 The aerobic fermentation temperature change diagram of Example 1 and its comparative example using the method of the present invention; Figure 4 The aerobic fermentation temperature change diagram of Example 2 and its comparative example using the method of the present invention; Figure 5 The aerobic fermentation temperature change diagram of Example 3 and its comparative example using the method of the present invention; Figure 6The relative abundance diagrams of Bacillus, Ureibacillus and Thermoactinomyces for implementing the method of the present invention in Examples 1, 2, 3 and their comparative examples are shown. Figure 7 The statistical analysis charts for the humus content and seed germination index of Cases 1, 2, 3 and their comparative examples implemented using the method of the present invention are shown in the figure. In the figure, * represents P<0.05, indicating a statistically significant difference; ** represents P<0.01, indicating a highly significant difference; and *** represents P<0.001, indicating an extremely significant difference. Figure 8 This is a schematic diagram of the processing box in this invention; Figure 9 yes Figure 8 Another structural diagram from another perspective; Figure 10 This is a schematic diagram of the processing box in this invention; Figure 11 yes Figure 10 Enlarged view of point A; Figure 12 yes Figure 10 Enlarged view of point B; Figure 13 This is a schematic diagram of the cleaning component in this invention.

[0018] In the diagram: 1. Processing box; 2. Baffle; 3. Air inlet pipe; 4. Air outlet; 5. Hydraulic rod; 6. Processing chamber; 7. Constant temperature forced air drying chamber; 8. Motor; 9. Base plate; 10. Filter screen; 11. Sealing plate; 12. Cavity; 13. Magnetic block; 14. Connecting pipe; 15. Elastic ring; 16. Pressure ring; 17. Connecting rod; 18. Liquid outlet groove; 19. Feed hole; 20. Connecting column; 21. Slide groove; 22. Locking block; 23. Locking groove; 24. Round rod; 25. Magnetic plate; 26. Cleaning ring; 27. Fixing rod; 28. Limiting plate. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Example 1: As Figures 1 to 7 As shown in the embodiment of the present invention, a method for aerobic fermentation of easily perishable waste rich in non-free oils is described. S1: Centrifuge the perishable waste rich in non-free oil with a centrifugal force of 4000 g for 15 min to remove some of the free water in the material and collect the residue; S2: Place the residue obtained in step S1 into the constant temperature forced air drying chamber 7 and evaporate it at 70°C for 90 minutes. The evaporation of non-free water changes the occurrence form of non-free oil and breaks its barrier effect on oxygen molecules. S3: Transfer the material processed in step S2 to a 15L horizontal aerobic fermentation unit and carry out aerobic fermentation at room temperature (23±1℃) with an aeration rate of 0.30 m³ / h. 3 / (min·m 3） The stirring rate was 3 r / min. The temperature of the fermentation system was recorded daily, and samples were taken every 2 days to test the physicochemical indicators. Fermentation continued until the temperature returned to room temperature.

[0021] The experimental results showed that the temperature of the fermentation system gradually dropped to room temperature on the 15th day. At this time, the humic content in the fermentation product was 234.6 mg C / g TS, and the seed germination index was 121.5%.

[0022] Comparative Example 1: A method for aerobic fermentation of perishable waste rich in non-free oil is basically the same as that in Example 1. The difference is that after step S1, the evaporation process in step S2 is not performed. Instead, the centrifuged material is directly transferred to a horizontal aerobic fermentation device for fermentation. The remaining fermentation conditions are the same as those in Example 1.

[0023] The experimental results showed that the temperature of the fermentation system gradually dropped to room temperature on the 21st day. At this time, the humic content in the fermentation product was 190.7 mg C / g TS, and the seed germination index was 84.5%.

[0024] Comparative experimental conclusions: Under the same conditions, Example 1 (treated with water evaporation) showed significantly better results than Comparative Example 1 (without water evaporation) in terms of the duration of the high-temperature stage, fermentation cycle, seed germination index, and humic matter content. Furthermore, the enrichment of thermophilic functional bacteria (such as Bacillus, Ureibacillus, and Thermoactinomyces) in Example 1 was also significantly better than in Comparative Example 1. All these comparisons indicate that the water evaporation treatment in step S2 is a crucial step in improving the aerobic fermentation efficiency and quality of the composted products from easily perishable waste rich in non-free oils.

[0025] Example 2: A method for aerobic fermentation of easily perishable waste rich in non-free oils, comprising the following steps: S1: Centrifuge the perishable waste rich in non-free grease for 20 minutes with a centrifugal force of 2000 g to remove some of the free water in the material and collect the residue; S2: Place the residue obtained in step S1 into the constant temperature forced air drying chamber 7 and evaporate it at 35°C for 150 min. S3: Transfer the material processed in step S2 to a 15L horizontal aerobic fermentation unit for aerobic fermentation. The stirring rate is 1-5 r / min, and the aeration rate is 0.50 m³ / min. 3 / (min·m 3） The stirring rate was 5 r / min, and fermentation continued until the temperature returned to room temperature.

[0026] The experimental results showed that the temperature of the fermentation system gradually dropped to room temperature on the 18th day. At this time, the humic content in the fermentation product was 227.5 mg C / g TS, and the seed germination index was 123.7%.

[0027] Comparative Example 1: A method for aerobic fermentation of perishable waste rich in non-free oil is basically the same as that in Example 2. The difference is that after step S1, the evaporation process in step S2 is not performed. Instead, the centrifuged material is directly transferred to a horizontal aerobic fermentation device for fermentation. The remaining fermentation conditions are the same as those in Example 2.

[0028] The experimental results showed that the temperature of the fermentation system gradually dropped to room temperature on the 21st day. At this time, the humic content in the fermentation product was 189.5 mg C / g TS, and the seed germination index was 90.1%.

[0029] Comparative experimental results: Under the conditions of water evaporation treatment at a lower temperature (35℃) and a longer time (150 min), compared with Comparative Example 1, the fermentation cycle was shortened, and the seed germination index and humic content were improved, verifying the effectiveness and applicability of the method of the present invention under low-temperature evaporation conditions.

[0030] Example 3: A method for aerobic fermentation of easily perishable waste rich in non-free oils, comprising the following steps: S1, centrifuge the perishable waste rich in non-free oil with a centrifugal force of 6000 g for 10 min to remove some of the free water in the material and collect the residue; S2, Place the residue obtained in step S1 into the constant temperature forced air drying chamber 7 and evaporate it at 90°C for 30 min; S3, the material processed in step S2 is transferred as a whole to a 15L horizontal aerobic fermentation device for aerobic fermentation, with a stirring rate of 1-5 r / min and an aeration rate of 0.10 m³ / min. 3 / (min·m 3） The stirring rate was 1 r / min, and fermentation continued until the temperature returned to room temperature.

[0031] The experimental results showed that the temperature of the fermentation system gradually dropped to room temperature on the 16th day. At this time, the humic content in the fermentation product was 222.7 mg C / g TS, and the seed germination index was 124.6%.

[0032] Comparative Example 1: A method for aerobic fermentation of perishable waste rich in non-free oil is basically the same as that in Example 2. The difference is that after step S1, the evaporation process in step S2 is not performed. Instead, the centrifuged material is directly transferred to a horizontal aerobic fermentation device for fermentation. The remaining fermentation conditions are the same as those in Example 2.

[0033] The experimental results showed that the temperature of the fermentation system gradually dropped to room temperature on the 21st day. At this time, the humic content in the fermentation product was 186.6 mg C / g TS, and the seed germination index was 92.2%.

[0034] Comparative experimental results: Under the conditions of higher temperature (90℃) and shorter time (30 min) water evaporation treatment, compared with Comparative Example 1, the fermentation cycle was shortened and the seed germination index and humic content were improved, indicating that the method of the present invention has good applicability in a wide range of evaporation temperature and time parameters.

[0035] Example 4: Figures 8 to 13 As shown in the comparative embodiment one, another embodiment of the present invention is: an aerobic fermentation device for easily perishable waste rich in non-free oil, which is applicable to the above-mentioned aerobic fermentation method for easily perishable waste rich in non-free oil, characterized in that: the constant temperature blower drying chamber 7 is opened in the processing box 1, the processing box 1 is provided with a processing chamber 6, the bottom surface of the constant temperature blower drying chamber 7 is provided with a through hole communicating with the processing chamber 6, the side wall of the processing box 1 is provided with a set of air outlets 4 communicating with the constant temperature blower drying chamber 7, the side of the processing box 1 away from the air outlets 4 is provided with a pair of air inlet pipes 3 communicating with the constant temperature blower drying chamber 7, a hydraulic rod 5 is fixedly connected in the processing chamber 6, the output end of the hydraulic rod 5 is provided with a motor 8, the motor 8 is used to drive the centrifuge barrel to rotate, the centrifuge barrel is composed of a filter screen 10 and a bottom plate 9, the top surface of the processing box 1 is provided with a feed hole 19, and the bottom surface of the processing box 1 is provided with a liquid outlet trough 18 communicating with the processing chamber 6; In this application, when processing perishable waste, the output end of the hydraulic rod 5 drives the centrifuge bucket upward, making the centrifuge bucket higher than the feed hole 19. Then, the perishable waste is poured into the centrifuge bucket. After that, the output end of the hydraulic rod 5 drives the centrifuge bucket downward. Then, the motor 8 is started to make the centrifuge bucket rotate, thereby removing the free water from the perishable waste. Then, the centrifuge bucket is controlled to enter the constant temperature blower drying chamber 7. At this time, the bottom plate 9 will be attached to the inner wall of the through hole to prevent hot air from leaking out of the through hole. Then, hot air is injected into the constant temperature blower drying chamber 7 through the air inlet pipe 3, allowing the hot air to evaporate the residue in the centrifuge bucket. After the evaporation is completed, the centrifuge bucket is removed, and the residue is subjected to subsequent fermentation treatment. Through the above mechanism, the centrifugation and evaporation process can be completed in the processing box 1, which greatly improves the convenience of the overall process.

[0036] The top surface of the processing chamber 1 is slidably connected to a baffle 2 that seals the feed hole 19, and the bottom surface of the constant temperature blower drying chamber 7 is slidably connected to a sealing plate 11 that seals the through hole. A cavity 12 is provided inside the processing chamber 1, and a magnetic block 13 that is magnetically attracted to the sealing plate 11 is slidably connected inside the cavity 12. A moving assembly for controlling the movement of the magnetic block 13 is provided inside the processing chamber 6. When the centrifuge bucket enters the processing chamber 6, the moving assembly controls the magnetic block 13 to move, so that the magnetic block 13 drives the sealing plate 11 to move away from above the through hole. After the centrifuge bucket enters the processing chamber 6, the moving assembly controls the magnetic block 13 to reset, so that the magnetic block 13 drives the sealing plate 11 to reset, so that the sealing plate 11 seals the through hole and prevents free water from entering the constant temperature blower drying chamber 7 during centrifugation.

[0037] The moving component includes an elastic ring 15 fixed to the bottom surface of the processing cavity 6. The elastic ring 15 has a hollow structure inside. A connecting pipe 14 connects the elastic ring 15 and the cavity 12. A control valve is installed inside the connecting pipe 14. A connecting rod 17 is fixedly connected to the side wall of the output end of the hydraulic rod 5. A pressure ring 16 is fixedly connected to the bottom surface of the connecting rod 17. When the centrifuge barrel in this application needs to enter the constant temperature blower drying chamber 7, the output end of the hydraulic rod 5 moves downward. At this time, the connecting rod 17 will drive the pressure ring 16 to squeeze the elastic ring 15, so that the gas in the elastic ring 15 enters the cavity 12 through the connecting pipe 14. Then the gas will push the magnetic block 13 to move the sealing plate 11 away from the top of the through hole. After that, the control valve is closed to stop the gas in the cavity 12 from flowing. At this time, the magnetic block 13 will no longer move. Then the centrifuge barrel is controlled to enter the constant temperature blower drying chamber 7. When the centrifuge barrel is in the processing chamber 6, the control valve can be opened. At this time, the elastic ring 15 will recover due to its own elasticity. At this time, the gas in the cavity 12 will be drawn into the elastic ring 15. At this time, the magnetic block 13 will also be attracted, thereby driving the sealing plate 11 to reset and seal the through hole.

[0038] The output end of the motor 8 is fixedly connected to a connecting column 20, which is rotatably connected to the bottom surface of the base plate 9. A pair of sliding grooves 21 are provided on the side wall of the connecting column 20, and a locking block 22 is slidably connected in the sliding groove 21. A locking groove 23 is provided on the base plate 9 to engage with the locking block 22. A spring is fixedly connected between the side of the locking block 22 away from the locking groove 23 and the inner wall of the sliding groove 21. A release component is provided in the connecting column 20 to allow the locking block 22 to disengage from the locking groove 23. After the evaporation of the residue is completed, the sliding baffle 2 is moved away from the feed hole 19, and then the centrifuge bucket is placed on the feed hole 19. At this time, the release component controls the locking block 22 to disengage from the locking groove 23. Then the centrifuge bucket is removed to process the residue. After the residue is processed, the centrifuge bucket is fixed by engaging the locking block 22 with the locking groove 23.

[0039] The release assembly includes a round rod 24 rotatably connected to the bottom surface of the base plate 9. The bottom end of the round rod 24 extends into the connecting post 20. A pair of magnetic plates 25 that engage with the locking block 22 are fixedly connected to the outer wall of the round rod 24. When the locking block 22 needs to be dislodged from the slot 23, the round rod 24 is rotated to align the magnetic plates 25 with the locking block 22. At this time, the locking block 22 will be attracted and dislodged from the slot 23. When the locking block 22 needs to engage with the slot 23, the round rod 24 is rotated to misalign the magnetic plates 25 with the locking block 22. At this time, the spring will push the locking block 22 to engage with the slot 23.

[0040] The centrifuge chamber is equipped with a cleaning ring 26 for cleaning the filter screen 10. A fixing rod 27 is fixedly connected to the top surface of the cleaning ring 26, and a limiting plate 28 is rotatably connected to the top surface of the fixing rod 27. When centrifuging perishable waste, the limiting plate 28 is hung on the top surface of the filter screen 10 so that the cleaning ring 26 is away from the bottom surface of the bottom plate 9. When processing the residue in the centrifuge chamber, the limiting plate 28 can be rotated to move the limiting plate 28 away from the top surface of the filter screen 10. Then, the cleaning ring 26 can be moved by the fixing rod 27 so that the cleaning ring 26 can scrape off the residue on the inner wall of the filter screen 10.

[0041] Working principle: The output end of the hydraulic rod 5 drives the centrifuge barrel to move upward, making the centrifuge barrel higher than the feed hole 19. Then, the perishable waste is poured into the centrifuge barrel. After that, the output end of the hydraulic rod 5 drives the centrifuge barrel to move downward. Then, the motor 8 is started to make the centrifuge barrel rotate, thereby removing the free water from the perishable waste. Then, the centrifuge barrel is controlled to enter the constant temperature blower drying chamber 7. At this time, the bottom plate 9 will be attached to the inner wall of the through hole to prevent hot air from leaking out of the through hole. Then, hot air is injected into the constant temperature blower drying chamber 7 through the air inlet pipe 3, allowing the hot air to evaporate the residue in the centrifuge barrel. After the evaporation is completed, the centrifuge barrel is removed, and the residue is subjected to subsequent fermentation treatment. Through the above mechanism, the centrifugation and evaporation process can be completed in the processing box 1, which greatly improves the convenience of the overall process. When the centrifuge drum in this application enters the processing chamber 6, the moving component controls the movement of the magnetic block 13, causing the magnetic block 13 to move the sealing plate 11 away from the through hole. After the centrifuge drum enters the processing chamber 6, the moving component controls the magnetic block 13 to reset, causing the magnetic block 13 to move the sealing plate 11 back to its original position, sealing the through hole and preventing free water from entering the constant temperature drying chamber 7 during centrifugation. When the centrifuge drum needs to enter the constant temperature drying chamber 7, the output end of the hydraulic rod 5 moves downwards. At this time, the connecting rod 17 drives the pressure ring 16 to squeeze the elastic ring 15, causing the elastic ring to... The gas inside the elastic ring 15 enters the cavity 12 through the connecting pipe 14. The gas then pushes the magnetic block 13 to move the sealing plate 11 away from the top of the through hole. After that, the control valve is closed to stop the gas flow in the cavity 12. At this time, the magnetic block 13 will no longer move. Then, the centrifuge bucket is controlled to enter the constant temperature blower drying chamber 7. When the centrifuge bucket is in the processing chamber 6, the control valve can be opened. At this time, the elastic ring 15 will recover due to its own elasticity. The gas in the cavity 12 will be drawn into the elastic ring 15. At this time, the magnetic block 13 will also be attracted, thereby driving the sealing plate 11 to reset and seal the through hole. After the evaporation of the residue is completed, the sliding baffle 2 is removed from the feed hole 19, and then the centrifuge bucket is placed on the feed hole 19. At this time, the release component control block 22 is released from the slot 23. Then the centrifuge bucket is removed to process the residue. After the residue is processed, the centrifuge bucket is fixed by the block 22 engaging with the slot 23. When the block 22 needs to be released from the slot 23, the round rod 24 is rotated to align the magnetic plate 25 with the block 22. At this time, the block 22 will be attracted to release from the slot 23. When the block 22 needs to be engaged with the slot 23, the round rod 24 is rotated to misalign the magnetic plate 25 with the block 22. At this time, the spring will push the block 22 to engage with the slot 23.

[0042] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0043] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 this invention and simplifying the description, and do not 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 limiting the scope of protection of this invention.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for aerobic fermentation of perishable waste rich in non-free oils, characterized in that: Includes the following steps: S1: By adding non-free grease-rich perishable waste into the centrifuge tank of the treatment box (1), and then removing some of the free water in the non-free grease-rich perishable waste by centrifugation, the residue is collected; S2: Place the residue obtained in step S1 into a constant temperature drying chamber (7), and the evaporation temperature range involved in the evaporation treatment is 35~90℃; S3: Transfer the material processed in step S2 to a 15L horizontal aerobic fermentation device for aerobic fermentation, with a stirring rate of 1-5 r / min.

2. The method for aerobic fermentation of perishable waste rich in non-free oils according to claim 1, characterized in that: In step S1, the centrifugation process involves a centrifugal force of 2000~6000 g, and in step S2, the evaporation process involves an evaporation time range of 30~150 min.

3. The method for aerobic fermentation of perishable waste rich in non-free oils according to claim 2, characterized in that: The method of using the processing box (1) includes the following steps: A1: Move the baffle (2) away from the feed hole (19), and then drive the centrifuge barrel to move upward through the hydraulic rod (5) so that the centrifuge barrel is higher than the feed hole (19). Then pour the perishable waste into the centrifuge barrel and then let the centrifuge barrel enter the processing chamber (6). A2: Seal the through hole with the sealing plate (11), then centrifuge the perishable waste. After centrifugation, remove the sealing plate (11) from the through hole and then let the centrifuge bucket enter the constant temperature blower drying chamber (7) to evaporate the residue. A3: After the residue has evaporated, raise the centrifuge barrel above the feed hole (19), then release the card block (22) from the card slot (23), and then remove the centrifuge barrel for further processing of the residue.

4. An apparatus for aerobic fermentation of easily perishable waste rich in non-free grease, the apparatus being applicable to the aerobic fermentation method for easily perishable waste rich in non-free grease as described in any one of claims 1-3, characterized in that: The constant temperature blower drying chamber (7) is located inside the processing box (1). The processing box (1) has a processing chamber (6). The bottom surface of the constant temperature blower drying chamber (7) has a through hole communicating with the processing chamber (6). The side wall of the processing box (1) has a set of air outlets (4) communicating with the constant temperature blower drying chamber (7). The side of the processing box (1) away from the air outlets (4) has a pair of air inlet pipes (3) communicating with the constant temperature blower drying chamber (7). A hydraulic rod (5) is fixedly connected inside the processing chamber (6). The output end of the hydraulic rod (5) is equipped with a motor (8). The motor (8) is used to drive the centrifuge barrel to rotate. The centrifuge barrel is composed of a filter screen (10) and a bottom plate (9). The top surface of the processing box (1) has a feed hole (19). The bottom surface of the processing box (1) has a liquid outlet trough (18) communicating with the processing chamber (6).

5. The apparatus for aerobic fermentation of easily perishable waste rich in non-free oils according to claim 4, characterized in that: The top surface of the processing box (1) is slidably connected to a baffle (2) that seals the feed hole (19), the bottom surface of the constant temperature blower drying chamber (7) is slidably connected to a sealing plate (11) that seals the through hole, the processing box (1) has a cavity (12) inside, the cavity (12) is slidably connected to a magnetic block (13) that magnetically attracts the sealing plate (11), and the processing chamber (6) is provided with a moving component that controls the movement of the magnetic block (13).

6. The apparatus for aerobic fermentation of easily perishable waste rich in non-free oils according to claim 5, characterized in that: The moving component includes an elastic ring (15) fixed to the bottom surface of the processing chamber (6). The elastic ring (15) has a hollow structure inside. A connecting pipe (14) connects the elastic ring (15) and the cavity (12). A control valve is provided inside the connecting pipe (14). A connecting rod (17) is fixedly connected to the side wall of the output end of the hydraulic rod (5). A pressure ring (16) is fixedly connected to the bottom surface of the connecting rod (17).

7. The apparatus for aerobic fermentation of easily perishable waste rich in non-free oils according to claim 6, characterized in that: The output end of the motor (8) is fixedly connected to a connecting column (20). The connecting column (20) is rotatably connected to the bottom surface of the base plate (9). A pair of sliding grooves (21) are provided on the side wall of the connecting column (20). A locking block (22) is slidably connected in the sliding groove (21). A locking groove (23) is provided on the base plate (9) to engage with the locking block (22). A spring is fixedly connected between the side of the locking block (22) away from the locking groove (23) and the inner wall of the sliding groove (21). A disengagement component is provided in the connecting column (20) to allow the locking block (22) to disengage from the locking groove (23).

8. The apparatus for aerobic fermentation of perishable waste rich in non-free oils according to claim 7, characterized in that: The disengagement assembly includes a round rod (24) rotatably connected to the bottom surface of the base plate (9), the bottom end of the round rod (24) extending into the connecting post (20), and a pair of magnetic plates (25) fixedly connected to the outer side wall of the round rod (24) and engaging with the locking block (22).

9. The apparatus for aerobic fermentation of easily perishable waste rich in non-free oils according to claim 8, characterized in that: The centrifuge tank is equipped with a cleaning ring (26) for cleaning the filter screen (10). A fixing rod (27) is fixedly connected to the top surface of the cleaning ring (26), and a limit plate (28) is rotatably connected to the top surface of the fixing rod (27).

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