Organic fertilizer fermentation tank device with biogas feedback regulation

Abstract

The utility model relates to the technical field of organic fertilizer fermentation tank, specifically disclose a kind of organic fertilizer fermentation tank device with marsh gas feedback regulation, including fermentation tank body, the upper end surface of fermentation tank body is fixedly connected with gas collection box, the total production of marsh gas in unit time can be measured by flowmeter, CH 4, CO 2 Concentration and gas total amount are detected in real time by gas analyzer, oxygen is added to the inside of organic waste by aeration pump, annular cavity and multiple oxygen inlet holes, the rotation of frequency conversion motor, shaft and multiple stirring vane is accelerated by central controller, to improve the gas production rate in the fermentation process of organic waste, the temperature of different height positions in organic waste is detected by multiple temperature sensors, and the temperature in organic waste is heated by central controller control electric heating band ring, and then the temperature in organic waste is controlled, so that organic waste maintains fermentation activity.

Description

Technical Field

[0001] This utility model relates to the field of organic fertilizer fermentation tank technology, and specifically discloses an organic fertilizer fermentation tank device with biogas feedback regulation. Background Technology

[0002] An organic fertilizer fermentation tank is a closed-loop equipment system used to rapidly and efficiently convert organic waste (such as livestock and poultry manure, kitchen waste, straw, sludge, etc.) into stable, harmless, and nutrient-rich organic fertilizer under controlled conditions. Essentially, it is an industrialized, mechanized, and intelligent aerobic fermentation reactor that replaces traditional open-air composting methods, solving many problems associated with traditional composting, such as long cycles, low efficiency, environmental pollution, odor pollution, and susceptibility to weather conditions.

[0003] Traditional organic fertilizer fermentation tanks mostly use fixed-cycle stirring or constant temperature control, which cannot dynamically adjust process parameters according to the fermentation process. The biogas produced during fermentation (mainly containing methane, CO2, etc.) is a key indicator reflecting microbial activity, but existing equipment rarely uses biogas data to achieve closed-loop control, resulting in low fermentation efficiency, long cycle, and high energy consumption. Summary of the Invention

[0004] This invention proposes an organic fertilizer fermentation tank device with biogas feedback control, which automatically adjusts the stirring rate, aeration rate and temperature by monitoring biogas parameters in real time, thereby improving the fermentation efficiency and quality of organic fertilizer.

[0005] This utility model is implemented as follows: an organic fertilizer fermentation tank device with biogas feedback regulation includes a fermentation tank body, a gas collection box is fixedly connected to the upper end face of the fermentation tank body, an air passage hole communicating with the gas collection box is opened through the upper end of the interior of the fermentation tank body, a flow meter is installed inside the air passage hole, a gas analyzer is installed on the upper end face of the gas collection box, and the air inlet of the gas analyzer is connected to the gas collection box. Multiple electric heating belt rings evenly distributed vertically are embedded in the outer wall of the fermenter body, and temperature sensors are installed on the inner walls of the multiple electric heating belt rings via connecting rods. The upper interior of the fermenter body is rotatably connected to a rotating shaft, and multiple evenly distributed stirring blades are fixedly connected to the outer wall of the rotating shaft. The multiple stirring blades are interspersed with multiple temperature sensors. The lower side wall of the fermenter body has an annular cavity, and the lower part of the fermenter body has multiple evenly distributed oxygen inlet holes that communicate with the annular cavity.

[0006] As a preferred embodiment of the organic fertilizer fermentation tank device with biogas feedback regulation according to this utility model, an aeration pump with an air outlet connected to an annular cavity is installed on the lower end face of the fermentation tank body.

[0007] As a preferred embodiment of the organic fertilizer fermentation tank device with biogas feedback regulation according to this utility model, a variable frequency motor is installed on the upper end face of the fermentation tank body, and the output end of the variable frequency motor is fixedly connected to the rotating shaft.

[0008] In a preferred embodiment of this utility model of an organic fertilizer fermentation tank device with biogas feedback regulation, one-way valves are installed inside each of the multiple oxygen inlet holes.

[0009] As a preferred embodiment of the organic fertilizer fermentation tank device with biogas feedback control according to this utility model, a central controller is installed on the outer wall of the fermentation tank body. The central controller is electrically connected to a flow meter, a gas analyzer, an electric heating belt ring, a temperature sensor, an aeration pump, and a variable frequency motor.

[0010] As a preferred embodiment of the organic fertilizer fermentation tank device with biogas feedback regulation according to this utility model, the upper end face of the fermentation tank body is connected to a feed pipe, and the upper end of the feed pipe is threadedly connected to a pipe cap.

[0011] As a preferred embodiment of the organic fertilizer fermentation tank device with biogas feedback regulation according to this utility model, the lower end face of the fermentation tank body is connected to a discharge pipe, and a valve is installed on the outer wall of the discharge pipe.

[0012] The beneficial effects of this utility model are: The flow meter measures the total biogas production per unit time to reflect the microbial metabolic rate. The gas analyzer detects the CH4 and CO2 concentrations and total gas volume in real time. The aeration pump, annular cavity, and multiple oxygen inlets work together to oxygenate the organic waste. The central controller accelerates the rotation of the variable frequency motor, shaft, and multiple stirring blades to increase the gas production rate during fermentation. Multiple temperature sensors evenly distributed vertically detect the temperature at different heights within the organic waste. The central controller controls the electric heating belt to heat the organic waste, thus controlling the temperature and maintaining its fermentation activity. By monitoring biogas parameters in real time, the stirring rate, aeration volume, and temperature are automatically adjusted to improve the efficiency and quality of organic fertilizer fermentation. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0014] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front cross-sectional view of the present invention. Figure 3 This is a top view cross-sectional structural diagram of the present invention.

[0015] The markings in the diagram are: 1. Fermentation tank body; 2. Gas collection box; 3. Gas outlet; 4. Flow meter; 5. Gas analyzer; 6. Electric heating belt ring; 7. Temperature sensor; 8. Rotating shaft; 9. Stirring blades; 10. Annular cavity; 11. Oxygen inlet; 12. Aeration pump; 13. Variable frequency motor; 14. One-way valve; 15. Central controller; 16. Feed pipe; 17. Discharge pipe. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0017] Please see Figure 1-3 An organic fertilizer fermentation tank device with biogas feedback regulation includes a fermentation tank body 1, a gas collection box 2 fixedly connected to the upper end face of the fermentation tank body 1, an air passage 3 communicating with the gas collection box 2 through the upper end of the interior of the fermentation tank body 1, a flow meter 4 installed inside the air passage 3, and a gas analyzer 5 installed on the upper end face of the gas collection box 2, with the air inlet end of the gas analyzer 5 communicating with the gas collection box 2. Multiple electric heating belt rings 6, evenly distributed vertically, are embedded in the outer wall of the fermenter body 1. Temperature sensors 7 are installed on the inner walls of the multiple electric heating belt rings 6 via connecting rods. The upper part of the fermenter body 1 is rotatably connected to a rotating shaft 8, and multiple uniformly distributed stirring blades 9 are fixedly connected to the outer wall of the rotating shaft 8. The multiple stirring blades 9 and multiple temperature sensors 7 are distributed alternately. An annular cavity 10 is provided inside the lower side wall of the fermenter body 1, and multiple oxygen inlet holes 11 are evenly distributed and communicate with the annular cavity 10 through the lower part of the fermenter body 1.

[0018] In this embodiment: During use, an appropriate amount of organic waste is added to the fermentation tank body 1 through the feed pipe 16, and fermentation is carried out. During the fermentation process, biogas is generated. The biogas rises to the upper part of the fermentation tank body 1, and then enters the gas collection box 2 through the air passage 3. When the biogas passes through the air passage 3, the flow meter 4 can measure the total biogas production per unit time (m³ / h) to reflect the microbial metabolic rate. Then, the biogas in the gas collection box 2 enters the gas analyzer 5 (which is automatically detected within a specified time by the central controller 15). The gas analyzer 5 detects the CH4 and CO2 concentrations and the total gas volume in real time (the gas analyzer 5 is a Servomex model). The GA3000 uses an infrared sensor to detect CH4 concentration and an electrochemical sensor to detect CO2 concentration. These are well-known and mature existing technologies, and their working principles and components will not be described in detail here. Then, the flow meter 4 and the gas analyzer 5 transmit their respective monitored values ​​to the central controller 15, which reflects the monitored values ​​of the flow meter 4 and the gas analyzer 5 in real time. If the CH4 concentration is detected to be less than the set value, the aeration pump 12 is started by the central controller 15. The aeration pump 12 delivers oxygen into the annular cavity 10 and then delivers it into the organic waste through multiple oxygen inlet holes 11 to oxygenate the interior of the organic waste. When the gas production rate decreases during the fermentation of organic waste, the central controller 15 controls the speed of the variable frequency motor 13 to increase. The variable frequency motor 13 drives the rotating shaft 8 and multiple stirring blades 9 to increase their rotation speed. Since the multiple stirring blades 9 and multiple temperature sensors 7 are staggered, the multiple stirring blades 9 will not collide with the temperature sensors 7 during rotation. Thus, the high-speed multiple stirring blades 9 can perform high-intensity stirring of the organic waste to increase the gas production rate during the fermentation of organic waste. Multiple temperature sensors 7, evenly distributed vertically, can detect the temperature at different heights within the organic waste. The detected values ​​are then transmitted to the central controller 15. The central controller 15 analyzes the temperature at different heights within the organic waste. When the temperature at one location within the organic waste is low, the central controller 15 controls the corresponding electric heating belt ring 6 to heat the organic waste, thereby controlling the temperature within the organic waste and maintaining its fermentation activity. Furthermore, by monitoring biogas parameters in real time, the stirring rate, aeration volume, and temperature are automatically adjusted to improve the fermentation efficiency and quality of organic fertilizer.

[0019] As a technical optimization of this utility model, an aeration pump 12 with an air outlet connected to an annular cavity 10 is installed on the lower end face of the fermenter body 1.

[0020] In this embodiment: oxygen can be supplied to the annular cavity 10 by the aeration pump 12 (the model of the aeration pump 12 is SFD7.5-20 VSD, which is a well-known and mature existing technology, and its working principle and components are not described in detail here).

[0021] As a technical optimization of this utility model, a variable frequency motor 13 is installed on the upper end face of the fermenter body 1, and the output end of the variable frequency motor 13 is fixedly connected to the rotating shaft 8.

[0022] In this embodiment: the variable frequency motor 13 can drive the rotating shaft 8 to rotate while adjusting the speed of the rotating shaft 8 (the variable frequency motor 13 is model 1LA8 186-6AA70-Z (7.5kW), which is a well-known and mature existing technology, and its working principle and components will not be described in detail here).

[0023] As a technical optimization of this utility model, a one-way valve 14 is installed inside each of the multiple oxygen inlet holes 11.

[0024] In this embodiment, the one-way valve 14 can block the oxygen inlet 11 in one direction to prevent organic waste from entering the oxygen inlet 11.

[0025] As a technical optimization of this utility model, a central controller 15 is installed on the outer wall of the fermenter body 1. The central controller 15 is electrically connected to the flow meter 4, the gas analyzer 5, the electric heating belt ring 6, the temperature sensor 7, the aeration pump 12 and the variable frequency motor 13.

[0026] In this embodiment: the central controller 15 can receive the values ​​detected by the flow meter 4, the gas analyzer 5 and the temperature sensor 7, and can also control the electric heating belt ring 6, the aeration pump 12 and the variable frequency motor 13 (the central controller 15 is model CPU 1515SP PC, which is a well-known and mature existing technology, and its working principle and components will not be described in detail here).

[0027] As a technical optimization of this utility model, the upper end face of the fermenter body 1 is connected to a feed pipe 16, and the upper end of the feed pipe 16 is threadedly connected to a pipe cap.

[0028] In this embodiment: organic waste can be easily added into the fermentation tank body 1 through the feed pipe 16, and the feed pipe 16 can be sealed through the pipe cover.

[0029] As a technical optimization of this utility model, the lower end face of the fermenter body 1 is connected to a discharge pipe 17, and a valve is installed on the outer wall of the discharge pipe 17.

[0030] In this embodiment: the discharge pipe 17 facilitates the discharge of organic waste after fermentation from the fermentation tank body 1, and the discharge pipe 17 can be sealed by a valve.

[0031] The working principle and usage process of this utility model are as follows: Organic waste is fermented through the fermentation tank body 1. During the fermentation process, biogas is generated. The biogas rises to the upper part of the fermentation tank body 1 and then enters the gas collection box 2 through the air passage 3. When the biogas passes through the air passage 3, the flow meter 4 can measure the total biogas production per unit time (m³ / h) to reflect the microbial metabolic rate. Then, the biogas in the gas collection box 2 enters the gas analyzer 5. The gas analyzer 5 detects the concentration of CH4 and CO2 and the total amount of gas in real time. Then, the flow meter 4 and the gas analyzer 5 transmit the values ​​they monitor to the central controller 15. The central controller 15 reflects the values ​​monitored by the flow meter 4 and the gas analyzer 5 in real time. If the CH4 concentration is detected to be less than the set value, the aeration pump 12 is started by the central controller 15. The aeration pump 12 delivers oxygen into the annular cavity 10 and then delivers it into the organic waste through multiple oxygen inlet holes 11 to oxygenate the interior of the organic waste. When the gas production rate decreases during the fermentation of organic waste, the central controller 15 controls the speed of the variable frequency motor 13 to increase. The variable frequency motor 13 drives the rotating shaft 8 and multiple stirring blades 9 to increase their rotation speed. In turn, the high-speed stirring blades 9 perform high-intensity stirring of the organic waste to increase the gas production rate during the fermentation of organic waste. Multiple temperature sensors 7, evenly distributed vertically, can detect the temperature at different heights within the organic waste. The detected values ​​are then transmitted to the central controller 15. The central controller 15 analyzes the temperature at different heights within the organic waste. When the temperature at one location within the organic waste is low, the central controller 15 controls the corresponding electric heating belt ring 6 to heat the organic waste, thereby controlling the temperature within the organic waste and maintaining its fermentation activity.

[0032] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", 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 utility model 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 limitations on this utility model.

[0033] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. An organic fertilizer fermentation tank device with biogas feedback regulation, comprising a fermentation tank body (1), characterized in that: A gas collecting box (2) is fixedly connected to the upper end of the fermentation tank body (1). An air passage (3) communicating with the gas collecting box (2) is opened through the upper end of the fermentation tank body (1). A flow meter (4) is installed inside the air passage (3). A gas analyzer (5) is installed on the upper end of the gas collecting box (2). The air inlet of the gas analyzer (5) is connected to the gas collecting box (2). The outer wall of the fermenter body (1) is embedded with multiple electric heating belt rings (6) evenly distributed vertically, and the inner walls of the multiple electric heating belt rings (6) are equipped with temperature sensors (7) through connecting rods. The upper part of the fermenter body (1) is rotatably connected to a rotating shaft (8), and a plurality of uniformly distributed stirring blades (9) are fixedly connected to the outer wall of the rotating shaft (8). The plurality of stirring blades (9) and a plurality of temperature sensors (7) are staggered. The fermenter body (1) has an annular cavity (10) inside the lower side wall, and the fermenter body (1) has multiple evenly distributed oxygen inlet holes (11) that are connected to the annular cavity (10) through the lower part of the interior.

2. The organic fertilizer fermentation tank device with feedback regulation of biogas according to claim 1, characterized in that: An aeration pump (12) with its air outlet connected to an annular cavity (10) is installed on the lower end face of the fermenter body (1).

3. The organic fertilizer fermentation tank device with feedback regulation of biogas according to claim 2, characterized in that: A variable frequency motor (13) is installed on the upper end face of the fermenter body (1), and the output end of the variable frequency motor (13) is fixedly connected to the rotating shaft (8).

4. The organic fertilizer fermentation tank device with feedback regulation of biogas according to claim 1, characterized in that: Each of the oxygen inlet holes (11) is equipped with a one-way valve (14).

5. The organic fertilizer fermentation tank device with feedback regulation of biogas according to claim 3, characterized in that: The outer wall of the fermenter body (1) is equipped with a central controller (15), which is electrically connected to a flow meter (4), a gas analyzer (5), an electric heating belt ring (6), a temperature sensor (7), an aeration pump (12), and a variable frequency motor (13).

6. The organic fertilizer fermentation tank device with feedback regulation of biogas according to claim 1, characterized in that: The upper end face of the fermenter body (1) is connected to a feed pipe (16), and the upper end of the feed pipe (16) is threaded with a pipe cap.

7. The organic fertilizer fermentation tank device with feedback regulation of biogas according to claim 1, characterized in that: The lower end face of the fermenter body (1) is connected to a discharge pipe (17), and a valve is installed on the outer wall of the discharge pipe (17).

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