A biological fertilizer fermentation device

Abstract

The present invention relates to the technical field of biological fertilizers, and specifically discloses a biological fertilizer fermentation device, which includes a fermentation tank for the fermentation of biological fertilizers. A first stirring assembly is arranged at the top of the fermentation tank, and a second stirring assembly is arranged inside the fermentation tank. A gas circulation assembly is arranged between the first stirring assembly and the second stirring assembly for regulating the fermentation process. The gas circulation assembly includes an insertion pipe, an inner pipe is arranged inside the insertion pipe, and one or more clamping strip holes are arranged in an annular array on the outer side of the insertion pipe. By means of the fermentation tank provided in the present invention and the first stirring assembly and the second stirring assembly provided, the fermentation content can be processed to improve the fermentation efficiency. The provided gas circulation assembly, which is an integral whole, plays a dual role of oxygen supply and exhaust. Compared with the separate treatment of the original dehumidification and oxygen supply systems, the fermentation space can be saved.

Description

Technical Field

[0001] The present invention relates to the technical field of biological fertilizers, and particularly to a biological fertilizer fermentation device. Background Art

[0002] Biological fertilizer fermentation is a process that utilizes microorganisms to carry out metabolic reactions in organic materials to produce organic acids, ammonia, and some other organic compounds as products. This fermentation process helps to decompose organic substances and provide nutrients required for plant growth.

[0003] In actual production, biological fertilizer fermentation can be carried out by placing organic materials (such as animal manure, plant residues, etc.) together with appropriate microbial inoculants under specific environmental conditions. These environmental conditions include appropriate temperature, humidity, ventilation, and pH value, etc., to promote the growth and metabolic reactions of microorganisms. By controlling these conditions, the fermentation process can be optimized, and the quality and nutrient content of biological fertilizers can be improved.

[0004] In the Chinese invention patent: Method and device for high-temperature rapid fermentation of agricultural waste to produce organic fertilizer (Publication No.: CN104609916B), multiple control systems are adopted to enable its treatment to ensure the fermentation environment. The temperature in the fermentation device is adjusted by an electric heating system to inactivate harmful microorganisms and pathogens in agricultural waste.

[0005] However, in the process of its use, the control methods between the heating system, stirring system, dehumidification and biological deodorization system, oxygenation system, feeding and discharging system, and electrical automatic control system are relatively complex, which affects the fermentation process and at the same time affects the fermentation space inside the fermentation tank. Based on this, we propose a biological fertilizer fermentation device. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a biological fertilizer fermentation device, which solves the problem of reducing the space for fermentation caused by the traditional heating method in the prior art, and at the same time, the reliability will decrease due to the combination of multiple systems.

[0007] The biological fertilizer fermentation device of the present invention includes a fermentation tank for biological fertilizer fermentation. A stirring assembly one is arranged at the top of the fermentation tank, and a stirring assembly two is arranged inside the fermentation tank. A gas circulation assembly is arranged between the stirring assembly one and the stirring assembly two to regulate the fermentation process;

[0008] The gas circulation assembly includes an insertion pipe. An inner pipe is arranged inside the insertion pipe. One or more clamping strip holes are arranged in an annular array on the outer side of the insertion pipe. The clamping strip holes are communicated with the inner pipe. An oxygen supply port is arranged at each two clamping strip holes, and a filter screen is installed at the oxygen supply port to filter the fertilizer fermentation products;

[0009] The fermenter includes a tank body. A through hole is provided at the bottom of the tank body, and a double-layer pipe is installed. One or more support plates are arranged in a circular array at the inner bottom of the tank body with the double-layer pipe as the center;

[0010] One or more ceramic strips are arranged in a circular array in the inner cavity of the tank body. The ceramic strips are connected to the support plates through sealing flanges.

[0011] As a further improvement of the present invention, a channel is provided in the middle of the double-layer pipe. A fixed distance is maintained between the channel and the inner wall of the double-layer pipe. One side of the double-layer pipe is connected to a second pipe. A valve is provided below the channel and is connected to a first pipe through the valve.

[0012] As a further improvement of the present invention, the inner side of the support plate is hollow. A heat-conducting layer and a heat-insulating layer are provided in the hollow area. The heat-conducting layer is communicated with the ceramic strips through a sealing flange. A hollow layer is provided in the inner cavity and is communicated with the provided ceramic strips.

[0013] As a further improvement of the present invention, one or more support blocks are provided at the bottom of the tank body. A base is provided at the bottom of the support blocks to keep the fermenter stable.

[0014] As a further improvement of the present invention, the first stirring assembly includes a cover plate. A planetary gear transmission structure is provided at the bottom of the cover plate. A baffle is provided at the planetary gear transmission structure. One or more first swing arms are provided at the baffle at the gear transmission part. A first stirring impeller is installed at the first swing arms to stir the fermented material.

[0015] As a further improvement of the present invention, a sealing flange is provided at the outer edge of the cover plate. The sealing flange is adapted to the tank body of the fermenter. A through hole is also provided in the middle of the cover plate and is adapted to the gas circulation assembly.

[0016] As a further improvement of the present invention, the second stirring assembly includes a bearing plate. A groove adapted to the support plate is provided at the bottom of the bearing plate. A through hole is provided in the middle of the bearing plate for adapting to the double-layer pipe.

[0017] As a further improvement of the present invention, one or more second swing arms are movably provided at the top of the bearing plate. A second stirring impeller is provided at one end of the second swing arms. The second stirring impeller corresponds to the first stirring impeller one by one and they are adapted to each other.

[0018] As a further improvement of the present invention, a sealing cover is provided at the top of the insertion pipe. A suction port is opened in the middle of the sealing cover. The suction port is adapted to an external suction component through a connecting pipe. A threaded pipe is provided at the bottom of the insertion pipe.

[0019] As a further improvement of the present invention, the threaded pipe passes through the through hole of the bearing plate and extends into the insertion hole. The threaded part of the threaded pipe is adapted to the channel.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] Through the fermentation tank provided in the present invention and the stirring assemblies I and II provided, the fermentation content can be processed, and the fermentation efficiency can be improved. The gas circulation assembly provided is an integral whole, which plays a dual role of oxygen supply and exhaust. Compared with the separate treatment of the original dehumidification and oxygen filling systems, the fermentation space can be saved, and the integrated setting, combined with the stirring assemblies I and II, can be better combined and adapted to improve the fermentation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0023] Figure 1 is a combined three-dimensional structure schematic diagram of the fermentation tank and the stirring assembly I of the present invention;

[0024] Figure 2 is a combined front view structure schematic diagram of the fermentation tank and the stirring assembly I of the present invention;

[0025] Figure 3 is a front view structure schematic diagram of the fermentation tank of the present invention;

[0026] Figure 4 is of the present invention Figure 3 is a schematic diagram of the A-A cross-sectional structure in the present invention;

[0027] Figure 5 is a schematic diagram of the inner side structure of the combination of the fermentation tank and the support block of the present invention;

[0028] Figure 6 is a schematic diagram of the top view structure of the combination of the fermentation tank and the support block of the present invention;

[0029] Figure 7 is a schematic diagram of the structure of the combination of the fermentation tank and the stirring assembly II of the present invention;

[0030] Figure 8 is a schematic diagram of the bottom view structure of the stirring assembly I of the present invention;

[0031] Figure 9 Schematic three-dimensional structure diagram of the gas circulation component of the present invention;

[0032] Figure 10 Schematic front view structure diagram of the gas circulation component of the present invention;

[0033] Figure 11 Of the present invention Figure 10 Schematic A-A cross-sectional structure diagram in

[0034] In the figure: 1, fermentation tank; 2, stirring component one; 3, stirring component two; 4, gas circulation component; 11, tank body; 12, base; 13, support block; 14, inner cavity; 15, ceramic strip; 16, double-layer pipe; 17, pipe one; 18, valve; 19, pipe two; 110, support plate; 111, channel; 112, heat conduction layer; 113, insertion hole; 114, sealing flange;

[0035] 21, cover plate; 22, sealing flange; 23, stirring impeller one; 24, baffle; 25, swing arm one; 26, planetary gear transmission structure

[0036] 31, stirring impeller two; 32, bearing plate; 33, swing arm two; 34, through hole;

[0037] 41, sealing cover; 42, suction port; 43, oxygen supply port; 44, clamping strip hole; 45, threaded pipe; 46, insertion pipe; 47, inner pipe. Detailed implementation manners

[0038] The following will disclose multiple implementation manners of the present invention with illustrations. For the sake of clarity, many physical details will be described together in the following narrative. However, it should be understood that these physical details are not used to limit the present invention. That is to say, in some implementation manners of the present invention, these physical details are unnecessary. In addition, for the purpose of simplifying the illustrations, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0039] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0040] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7, in traditional biological fertilizer fermentation, the control methods among the heating system, stirring system, dehumidifying and biological deodorizing system, oxygen supply system, feeding and discharging system, and electrical automatic control system are relatively complex, which affects the fermentation process and the fermentation space inside the fermentation tank 1. Based on this, the present application provides a biological fertilizer fermentation device, which includes a fermentation tank 1 for biological fertilizer fermentation. A stirring assembly 2 is arranged at the top of the fermentation tank 1, and a stirring assembly 3 is arranged inside the fermentation tank 1. A gas circulation assembly 4 is arranged between the stirring assembly 2 and the stirring assembly 3 to regulate the fermentation process;

[0041] The gas circulation assembly 4 includes an insertion pipe 46. An inner pipe 47 is arranged inside the insertion pipe 46. One or more clamping strip holes 44 are arranged in a circular array on the outer side of the insertion pipe 46. The clamping strip holes 44 communicate with the inner pipe 47. An oxygen supply port 43 is arranged at every two clamping strip holes 44. A filter screen is installed at the oxygen supply port 43 to filter the fertilizer fermentation products;

[0042] The fermentation tank 1 includes a tank body 11. A through hole 34 is opened at the bottom of the tank body 11, and a double-layer pipe 16 is installed. One or more support plates 110 are arranged in a circular array at the inner bottom of the tank body 11 with the double-layer pipe 16 as the center;

[0043] One or more ceramic strips 15 are arranged in a circular array in the inner cavity 14 of the tank body 11. The ceramic strips 15 are connected to the support plates 110 through sealing flanges 114.

[0044] The design of the fermentation tank 1 adopts the combination of the double-layer pipe 16 and the support plates 110. This layout can not only provide uniform ventilation and circulation effects, but also prevent excessive accumulation of fermentation materials at the bottom of the tank, thus avoiding over-compaction and hindering gas circulation. At the same time, the ceramic strips 15 arranged in the inner cavity 14 can increase the contact area and provide more attachment sites for microorganisms to attach and move.

[0045] The structures of the insertion pipe 46 and the inner pipe 47 in the gas circulation assembly 4 also play important roles. The circular array of the insertion pipe 46 and the arrangement of the clamping strip holes 44 can achieve uniform distribution and flow of gas in the fermentation materials. The installation of the filter screen at the oxygen supply port 43 can prevent impurities from entering the fermentation process and maintain the purity of the environment. Such a design can ensure uniform and sufficient oxygen supply and effectively discharge the gas generated in the metabolic products, maintaining a good state of the fermentation process.

[0046] In addition, this biological fertilizer fermentation device also has the characteristics of simple structure, convenient operation, and easy maintenance. The overall structure of the fermentation tank 1 is compact, and it is equipped with necessary sensors and control devices, which are convenient for real-time monitoring and adjustment of key parameters such as temperature and humidity during the fermentation process. Such a device design makes the fermentation process of biological fertilizers more controllable and stable, and can improve production efficiency and product quality.

[0047] Through the above design, this biological fertilizer fermentation device can achieve precise control and optimization of the fermentation process. The stirring assembly one 2 and the stirring assembly two 3 can make the fermentation materials fully mixed, and the combination of the insertion pipe 46, the inner pipe 47, the clamping strip hole 44 and the oxygen supply port 43 of the gas circulation assembly 4 can ensure the oxygen supply and gas discharge during the fermentation process. The double-layer pipe 16, the support plate 110 at the bottom, and the ceramic strip 15 in the inner cavity 14 can increase the surface area of the reaction system, improve the microbial activity and the degradation rate of organic substances.

[0048] Please refer to Figure 4 、 Figure 5 As shown in, a channel 111 is provided in the middle of the double-layer pipe 16, and a fixed distance is maintained between the channel 111 and the inner wall of the double-layer pipe 16. A pipe two 19 is connected to one side of the double-layer pipe 16. A valve 18 is provided below the channel 111 and is connected to a pipe one 17 through the valve 18.

[0049] A channel 111 is provided in the middle of the double-layer pipe 16, and a fixed distance is maintained between the channel 111 and the inner wall of the double-layer pipe 16 to form an internal gap. Among them, the pipe one 17 is used to transmit steam to maintain the temperature of the fermentation tank 1, and the pipe two 19 is used to supply gas for use in the fermentation process.

[0050] A valve 18 is provided below the channel 111 and is connected to the pipe one 17 through the valve 18 to control the flow of steam. This design allows steam to enter the channel 111 through the pipe one 17, and then enter the interior of the fermentation tank 1 through the gap between the channel 111 and the outer wall of the double-layer pipe 16. The steam heats the fermentation materials to maintain an appropriate fermentation temperature, thereby promoting the activities of microorganisms and the decomposition of organic substances.

[0051] On the other hand, the pipe two 19 is used to supply gas to meet the gas demand during the fermentation process. The gas can enter the fermentation tank 1 through the pipe two 19, and then be further distributed into the fermentation materials through the insertion pipe 46 and the clamping strip hole 44 in the gas circulation assembly 4. Such a design can ensure sufficient and uniform gas supply during the fermentation process, providing necessary conditions for the growth and metabolism of microorganisms.

[0052] The ceramic strip 15, as an attachment site inside the fermentation tank 1, is adapted to the pipe one 17. The ceramic strip 15 is connected to the support plate 110 through a sealing flange 114, forming a stable structure with the inner cavity 14 of the fermentation tank 1, so that the pipe one 17 can accurately guide the steam into the area of the fermentation materials, maintain the temperature inside the fermentation tank 1, and the pipe one 17 can not only provide steam, but also provide a refrigeration medium, and can flexibly adjust the temperature inside the fermentation tank 1.

[0053] Please refer to Figure 5 The inner side of the support plate 110 is hollow. A heat-conducting layer 112 and a heat-insulating layer are provided in the hollow area. The heat-conducting layer 112 is communicated with the ceramic strip 15 through a sealing flange 114. A hollow layer is provided in the inner cavity 14, and the hollow layer is communicated with the provided ceramic strip 15.

[0054] One or more support blocks 13 are provided at the bottom of the tank body 11, and a base 12 is provided at the bottom of the support block 13 for keeping the fermenter 1 stable.

[0055] The inner side of the support plate 110 is hollow to enhance the structural performance and heat energy management. A heat-conducting layer 112 and a heat-insulating layer are provided in the hollow area. The heat-conducting layer 112 is communicated with the ceramic strip 15 through a sealing flange 114 to improve the heat transfer efficiency and temperature uniformity. The function of the heat-insulating layer is to reduce heat loss and maintain a constant temperature inside the fermenter 1.

[0056] A hollow layer is also provided in the inner cavity 14, and the hollow layer is communicated with the ceramic strip 15. The setting of the hollow layer helps to further reduce heat transfer and maintain the heat energy stability inside the fermenter 1. This structural design can effectively isolate the internal and external temperatures and improve the energy efficiency of the device.

[0057] In addition, one or more support blocks 13 are provided at the bottom of the tank body 11 to ensure the stability of the fermenter 1. A base 12 is provided at the bottom of the support block 13 for providing additional support and enhancing the overall stability of the device. This base 12 can be a solid and stable structure to keep the fermenter 1 standing firmly during use.

[0058] Through the above design, the inner side of the support plate 110 of the biological fertilizer fermentation device is hollow, the setting of the heat-conducting layer 112 and the heat-insulating layer, and the combination of the hollow layer and the ceramic strip 15 all contribute to maintaining the stable temperature and heat insulation effect inside the fermenter 1. The support blocks 13 and the base 12 at the bottom increase the stability of the whole device. Such a design can improve the fermentation efficiency, control the temperature, and ensure the long-term stability of the device.

[0059] Please refer to Figure 1 、 Figure 2 、 Figure 7 、 Figure 8 The stirring assembly 2 includes a cover plate 21. A planetary gear transmission structure 26 is provided at the bottom of the cover plate 21. A baffle 24 is provided at the planetary gear transmission structure 26. One or more swing arms 25 are provided at the baffle 24 where the gear transmission is located. A stirring impeller 23 is installed at the swing arm 25 for stirring the fermentation material.

[0060] A sealing flange 22 is provided at the outer edge of the cover plate 21, and the sealing flange 22 is adapted to the tank body 11 of the fermentation tank 1. A through hole 34 is also provided in the middle of the cover plate 21, and the through hole 34 is adapted to the gas circulation assembly 4.

[0061] The stirring impeller one 23 is installed on the swing arm so that it can perform a stirring motion along a specific trajectory inside the fermentation tank 1. Such a design can effectively mix the fermentation materials and promote the growth and metabolic process of microorganisms. The sealing structure can prevent the leakage of gas and liquid during the fermentation process, ensuring the safety and operation effect of the device.

[0062] A through hole 34 is also provided in the middle of the cover plate 21, and the through hole 34 is adapted to the gas circulation assembly 4. The setting of the through hole 34 allows gas to enter the fermentation tank 1 from the gas circulation assembly 4 to maintain suitable ventilation conditions. The gas circulation assembly 4 can be a structure including an insertion pipe 46 and a clamping strip hole 44 for distributing gas to the fermentation materials. Such a design can maintain a suitable gas supply during the fermentation process and promote the growth and fermentation effect of microorganisms.

[0063] Through the above design, the planetary gear transmission structure 26, the baffle 24 and the swing arm one 25 of the stirring assembly one 2, as well as the settings of the sealing flange 22 and the through hole 34, all contribute to the stirring and ventilation control of the fermentation materials. The optimization of the power transmission of the stirring assembly and the sealing structure ensures the reliability of stirring and the gas tightness inside the fermentation tank 1. At the same time, through the adaptation of the through hole 34 and the gas circulation assembly 4, the gas can be properly distributed inside the fermentation tank 1 to maintain the ventilation conditions during the fermentation process.

[0064] Please refer to Figure 7 、 Figure 8 The stirring assembly two 3 includes a bearing plate 32. A groove adapted to the support plate 110 is provided at the bottom of the bearing plate 32. A through hole 34 is provided in the middle of the bearing plate 32 for adapting to the double-layer pipe 16.

[0065] One or more swing arms two 33 are movably provided on the top of the bearing plate 32. A stirring impeller two 31 is provided at one end of the swing arm two 33. The stirring impeller two 31 corresponds to the stirring impeller one 23 one by one and they are adapted to each other.

[0066] The stirring assembly two 3 is used to perform turbulent stirring on the solid particles in the fermentation tank 1 to promote the attachment and growth of microorganisms.

[0067] The setting of the stirring impeller two 31 corresponding to the stirring impeller one 23 can maximize the contact area between microorganisms and oxygen, thereby promoting the growth and fermentation effect of microorganisms. Such a combination can effectively mix the fermentation materials to support the attachment and activity process of microorganisms.

[0068] In addition to the carrier plate 32 and the stirring impeller, the second stirring assembly 3 further includes a groove adapted to the support plate 110 to ensure the stability and assembly effect of the stirring assembly. This design makes the installation and maintenance of the second stirring assembly 3 more convenient and easy to operate.

[0069] Through the above design and combination, the second stirring assembly 3 realizes the turbulent stirring of solid particles in the fermentation tank 1 through the second stirring impeller 31 to promote the attachment and growth of microorganisms; at the same time, the temperature control of the fermentation material is realized by adapting the through hole 34 to the double-layer pipe 16 to maintain suitable fermentation conditions. This device design can improve the efficiency and reliability of the fermentation process and increase the production output and quality of biological fertilizers.

[0070] The shape, angle and arrangement direction of the second stirring impeller 31 are all carefully designed to achieve the best material mixing effect. The second stirring impeller 31 corresponds to the first stirring impeller 23 one by one and is adapted to it to ensure the maximum mixing and stirring effect during the stirring process. This symmetrical impeller design helps to increase the contact area between microorganisms and oxygen and promotes the microbial activity and the production of high-quality biological fertilizers during the fermentation process.

[0071] Please refer to Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11 At the top of the insertion pipe 46, a sealing cover 41 is provided. In the middle of the sealing cover 41, a suction port 42 is opened. The suction port 42 is adapted to an external suction component through a connecting pipe. At the bottom of the insertion pipe 46, a threaded pipe 45 is provided.

[0072] The threaded pipe 45 extends through the through hole 34 of the carrier plate 32 into the insertion hole 113, and the threaded part of the threaded pipe 45 is adapted to the channel 111.

[0073] Through the connecting pipe, the suction port 42 is adapted to an external suction component to realize the suction of gas or liquid in the fermentation tank 1.

[0074] The above-mentioned suction component is one of the common components for suction in the mechanical field, such as a pump, which is used to create a negative or positive pressure environment in the fermentation tank. The pump can create a negative pressure in the tank to guide the gas flow to other equipment for treatment. Common types of pumps include water ring pumps and centrifugal pumps, etc.

[0075] To ensure the stability and connection effect of the insertion pipe 46, a threaded pipe 45 is provided at the bottom of the insertion pipe 46. The threaded pipe 45 passes through the through hole 34 of the bearing plate 32 and extends into the insertion hole 113. The threaded portion of the threaded pipe 45 is adapted to the channel 111 in the insertion hole 113 to ensure the tightness and sealing of the connection.

[0076] Through the settings of the sealing cover 41 and the suction port 42, the insertion pipe 46 provides a convenient suction channel 111, enabling users to easily extract gases or liquids from the fermentation tank 1 for analysis, monitoring, or other processing. By sucking through the connecting pipe, the exhaust gases or liquids to be treated generated during the fermentation process can be transferred to external suction components, achieving the balance and adjustment of the environment inside the fermentation tank 1.

[0077] The design of the threaded pipe 45 makes the connection between the insertion pipe 46 and the bearing plate 32 more firm, and the threaded pipe 45 extends into the insertion hole 113, ensuring the continuity of the channel 111 inside the insertion pipe 46 and the tank body 11. This design makes the insertion pipe 46 not easily loosen or fall off during the stirring process and ensures the normal flow of liquids or gases inside the insertion pipe 46.

[0078] In summary, through detailed expansion and refinement, the insertion pipe 46 in the stirring assembly two 3 incorporates both the sealing cover 41 and the suction port 42 in its design, is adapted to external suction components through the connecting pipe, and at the same time, the bottom threaded pipe 45 is connected to the insertion hole 113. This design enables the convenient extraction of gases or liquids from the fermentation tank 1, and achieves a stable and sealed connection through the connection of the threaded pipe 45 to meet the operation and environmental requirements during the fermentation process.

[0079] The above description is only for the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A biofertilizer fermentation device, comprising a fermentation tank (1) for biofertilizer fermentation, wherein a stirring assembly 1 (2) is arranged on the top of the fermentation tank (1), a stirring assembly 2 (3) is arranged on the inner side of the fermentation tank (1), and a gas circulation assembly (4) is arranged between the stirring assembly 1 (2) and the stirring assembly 2 (3) for regulating the fermentation process; Features: The gas circulation component (4) comprises a plug-in tube (46), an inner tube (47) is arranged on the inner side of the plug-in tube (46), one or more clip-on holes (44) are arranged in a circular array on the outer side of the plug-in tube (46), the clip-on holes (44) are connected to the inner tube (47), an oxygen supply port (43) is arranged at every two of the clip-on holes (44), and a filter screen is installed at the oxygen supply port (43) for filtering fertilizer fermentation products; The fermentation tank (1) comprises a tank body (11), the bottom of the tank body (11) is provided with a through hole (34) and is provided with a double-layer tube (16), and the inner bottom of the tank body (11) is provided with one or more support plates (110) in a circular array with the double-layer tube (16) as the center; The inner cavity (14) of the tank body (11) is provided with one or more ceramic strips (15) in a ring array, and the ceramic strips (15) are connected to the support plate (110) via a sealing flange (114); The stirring assembly 1 (2) comprises a cover plate (21), a planetary gear transmission structure (26) is arranged at the bottom of the cover plate (21), a baffle (24) is arranged at the planetary gear transmission structure (26), one or more swing arms 1 (25) are arranged at the gear transmission part of the baffle (24), and a stirring impeller 1 (23) is installed at the swing arm 1 (25) for stirring the fermentation material; The second stirring assembly (3) comprises a bearing plate (32), the bottom of which is provided with a groove adapted to the support plate (110), and the middle of which is provided with a through hole (34) adapted to the double-layer tube (16).

2. A biological fertilizer fermentation device according to claim 1, characterized in that: A channel (111) is provided in the middle of the double-layer tube (16), a fixed distance is maintained between the channel (111) and the inner wall of the double-layer tube (16), one side of the double-layer tube (16) is connected to a second pipe (19), a valve (18) is provided below the channel (111), and the channel (17) is connected via the valve (18).

3. A biological fertilizer fermentation device according to claim 1, characterized in that: The inner side of the support plate (110) is hollow, and a heat-conducting layer (112) and a heat-insulating layer are arranged in the hollow area; the heat-conducting layer (112) is connected to the ceramic strip (15) via a sealing flange (114); the inner cavity (14) is provided with a hollow layer, and the hollow layer is connected to the arranged ceramic strip (15).

4. A biological fertilizer fermentation device according to claim 1, characterized in that: One or more support blocks (13) are arranged at the bottom of the tank body (11), and a base (12) is arranged at the bottom of the support block (13) for maintaining the stability of the fermentation tank (1).

5. A biological fertilizer fermentation device according to claim 1, characterized in that: A sealing flange (22) is provided at the outer edge of the cover plate (21), and the sealing flange (22) is adapted to fit the tank body (11) of the fermentation tank (1). A through hole (34) is also provided in the middle of the cover plate (21), and the through hole (34) is adapted to fit the gas circulation component (4).

6. A biological fertilizer fermentation device according to claim 1, characterized in that: One or more swing arms (33) are movably provided on the top of the carrier plate (32), and a stirring impeller (31) is provided at one end of the swing arm (33). The stirring impeller (31) corresponds to the stirring impeller (23) one by one, and the two are adapted to each other.

7. A biological fertilizer fermentation device according to claim 1, characterized in that: A sealing cover (41) is provided at the top of the plug-in tube (46), a suction port (42) is provided in the middle of the sealing cover (41), the suction port (42) is adapted to an external suction component via a connecting tube, and a threaded tube (45) is provided at the bottom of the plug-in tube (46).

8. A biological fertilizer fermentation device according to claim 7, characterized in that: The threaded tube (45) passes through the through hole (34) of the bearing plate (32) and extends into the plug-in hole (113); a threaded portion of the threaded tube (45) is adapted to the channel (111).

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