An organic fertilizer production and processing equipment that is easy for microbial fermentation

Abstract

The present invention provides an organic fertilizer production and processing equipment, including a reaction container and a deoxygenation device, wherein the reaction container is configured to contain organic raw materials for dry anaerobic fermentation reaction; the deoxygenation device is arranged in the reaction container and configured to consume or filter the oxygen in the reaction container. In the organic fertilizer production and processing equipment of the present invention, the deoxygenation device consumes or filters the oxygen in the reaction container to maintain an oxygen-free atmosphere in the reaction container. Even if the seal fails and the outside air enters the reaction space, the fermentation environment of the anaerobic bacteria can be prevented from being destroyed, the mixing of oxygen and biogas in the reaction space can be prevented, and the reaction temperature can be prevented from rising, thereby facilitating the fermentation reaction of anaerobic microorganisms, solving the problem of air easily entering the reaction container, and achieving the purpose of improving the quality of organic fertilizer.

Description

Technical Field

[0001] The present invention relates to the technical field of biological fermentation, in particular to an organic fertilizer production and processing device which is easy for microbial fermentation. Background Art

[0002] Dry anaerobic fermentation involves the anaerobic fermentation of solid organic raw materials, and the products include biogas and organic fertilizer. The former can be used as a bioenergy source, and the latter as an economic product. Dry anaerobic fermentation plays an important role in the field of bioengineering due to its good economic efficiency. However, once the seal of the relevant device fails, air enters the fermentation chamber, causing high temperatures in the relevant device. This will not only destroy the living environment of anaerobic microorganisms, making fermentation difficult, and even causing the organic fertilizer to deteriorate; it will also mix with biogas, causing a flammability risk. Therefore, how to achieve reliable sealing of the relevant device is the key to dry anaerobic fermentation.

[0003] Industrial-grade organic fertilizer production and processing equipment currently primarily utilizes corrosion-resistant and high-temperature-resistant sealing components and one-piece molded reaction vessels to achieve reliable sealing. However, during dry anaerobic fermentation, exhaust is often required. Near the end of exhaust, air can easily enter the reaction vessel through the exhaust port, causing the aforementioned problems. Summary of the Invention

[0004] In view of the above problems, the present invention is proposed to provide an organic fertilizer production and processing equipment that overcomes the above problems or at least partially solves the above problems, which can solve the problem of air easily entering the reaction container and achieve the purpose of improving the quality of organic fertilizer.

[0005] Specifically, the present invention provides an organic fertilizer production and processing equipment, comprising:

[0006] a reaction vessel configured to contain organic raw materials for dry anaerobic fermentation;

[0007] A deoxygenation device is disposed in the reaction container and is configured to consume or filter oxygen in the reaction container.

[0008] Optionally, the deoxygenation device includes:

[0009] a deoxygenation air duct, the deoxygenation air duct communicating with the inner and outer spaces of the reaction container and forming a reaction port communicating with the inner space of the reaction container;

[0010] a first waterproof and breathable membrane, wherein the first waterproof and breathable membrane is disposed on the reaction port;

[0011] a first deoxygenating air conditioning membrane, the first deoxygenating air conditioning membrane being arranged in the deoxygenating air duct for allowing oxygen to pass through;

[0012] A fan assembly is arranged in the deoxygenation air duct and downstream of the first deoxygenation conditioning membrane, and is used to draw air in the reaction space toward the first deoxygenation conditioning membrane and discharge oxygen that passes through the first deoxygenation conditioning membrane.

[0013] Optionally, the deoxygenation device includes:

[0014] a deoxygenation air duct, the deoxygenation air duct communicating with the inner and outer spaces of the reaction container and forming a reaction port communicating with the inner space of the reaction container;

[0015] a first waterproof and breathable membrane, wherein the first waterproof and breathable membrane is disposed on the reaction port;

[0016] An electrolytic component, wherein the cathode of the electrolytic component is close to the waterproof breathable membrane, and is used to consume the oxygen in the reaction container in a manner of electrochemical reaction.

[0017] Optionally, the organic fertilizer production and processing equipment further includes:

[0018] a stirring device, comprising a stirring shaft rotatably mounted on the reaction vessel and a stirring blade connected thereto, for stirring the organic raw material; and

[0019] The deoxygenating devices are located on the stirring shaft and are distributed at intervals along the longitudinal direction of the stirring shaft.

[0020] Optionally, the stirring shaft comprises:

[0021] A main shaft, the main shaft is in the form of a sleeve and has a reaction port communicating with the inside and outside formed on the wall of the sleeve, a first waterproof and breathable membrane is provided on the reaction port, and the stirring blade is formed on the outer periphery of the main shaft;

[0022] A central shaft is coaxially rotated and connected to the main shaft through a sleeve. The deoxygenating device is located on the central shaft, and an exhaust passage communicating with each of the deoxygenating devices is formed in the central shaft.

[0023] Optionally, the deoxygenation device is configured to consume oxygen in the annulus between the main shaft and the central shaft by an electrochemical reaction; and

[0024] The reaction port is located at least on two opposite sides of the main shaft, and is provided on the central shaft between two adjacent deoxygenating devices and is spatially staggered with the exhaust channel and radially penetrates the central shaft as a pressurized channel. A pressurized fan is provided in the pressurized channel for pressurizing the gas in one side of the annulus and transporting it to the other side.

[0025] Optionally, the deoxygenation device includes:

[0026] a cathode layer, the cathode layer being wound in a sleeve shape and exposed from the outer periphery of the central shaft, and forming a reaction chamber filled with electrolyte together with the cylindrical wall of the central shaft;

[0027] an anode layer, the anode layer being wound into a sleeve shape and coaxially sleeved within the cathode layer and immersed in the electrolyte, and having vents coaxially disposed within both ends of the anode layer, the vents communicating with the exhaust channel;

[0028] A second waterproof breathable membrane is provided between the vent and the exhaust passage.

[0029] Optionally, the reaction ports are arranged in pairs on opposite sides of the main shaft, the two reaction ports in the same pair are staggered radially on the main shaft and radially on the center shaft with the pressurized fan, and the relatively distal ends of the two reaction ports in the same pair are arranged in the annulus and connected to the bearings of the main shaft and the center shaft.

[0030] Optionally, the deoxygenation device forms an exhaust port communicating with the outside of the reaction container; and

[0031] The organic fertilizer production and processing equipment also includes:

[0032] a second deoxygenating and conditioning membrane, the second deoxygenating and conditioning membrane being disposed in the exhaust port and being used to prevent air outside the reaction container from entering the exhaust port;

[0033] An airflow density detection module is provided in the exhaust port and upstream of the second deoxygenating air conditioning membrane, and is used to detect the concentration of oxygen discharged from the deoxygenating device.

[0034] Optionally, the organic fertilizer production and processing equipment further includes:

[0035] a fan assembly, the fan assembly being arranged at the exhaust port and upstream of the second deoxygenating and conditioning membrane, and being used to discharge oxygen from the exhaust port;

[0036] A control module is connected to the fan assembly and the airflow density detection module to be configured as follows:

[0037] Obtaining the current time and the biogas discharge time of the reaction container;

[0038] Determine whether the current time is within the first set time after the expiration time of the drainage time,

[0039] If yes, shut down the fan assembly and the airflow density detection module;

[0040] If not,

[0041] In response to the current moment being before the cut-off moment and being greater than a second set time period from the cut-off moment, the fan assembly is at the first speed; or

[0042] In response to the current moment being at the start moment of the drainage time and the time interval from the start moment being greater than a third set time, the fan assembly is at the second speed; or

[0043] In response to whether the airflow density measured by the airflow density detection module is greater than a set density, the fan assembly is at a third speed; and

[0044] The first speed, the second speed, and the third speed increase sequentially.

[0045] Beneficial effects of the present invention:

[0046] In the organic fertilizer production and processing equipment of the present invention, a deoxygenating device is used to consume or filter oxygen in a reaction container to maintain an oxygen-free atmosphere in the reaction container. Even if the seal fails and outside air enters the reaction space, the fermentation environment of anaerobic bacteria can be prevented from being destroyed, and the mixing of oxygen and methane in the reaction space and the increase in reaction temperature can be avoided. This facilitates the fermentation reaction of anaerobic microorganisms, solves the problem of air easily entering the reaction container, and achieves the purpose of improving the quality of organic fertilizer.

[0047] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0049] Figure 1 is a schematic structural diagram of an organic fertilizer production and processing device according to one embodiment of the present invention;

[0050] Figure 2 is a schematic structural diagram of a stirring shaft according to one embodiment of the present invention;

[0051] Figure 3 FIG. 4 is a schematic structural diagram of a stirring shaft according to an embodiment of the present invention based on another cross section. DETAILED DESCRIPTION

[0052] Refer to the following Figures 1 to 3To describe the organic fertilizer production and processing equipment that is easy to microbial fermentation of an embodiment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or suggesting relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one of these features, that is, include one or more of these features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a certain feature "includes or comprises" a certain or some of the features it covers, unless otherwise specifically described, this indication does not exclude other features and can further include other features.

[0053] Figure 1 FIG. 1 is a schematic structural diagram of an organic fertilizer production and processing device according to an embodiment of the present invention. Figure 1 As shown, and reference Figure 2 and Figure 3 An embodiment of the present invention provides an organic fertilizer production and processing device, comprising a reaction vessel 100 and a deoxygenation device 200. The reaction vessel 100 is configured to contain organic raw materials for dry anaerobic fermentation, and the deoxygenation device 200 is disposed within the reaction vessel 100 and configured to consume or filter oxygen within the reaction vessel 100.

[0054] During use, once it is found that the seal of the reaction vessel 100 fails, the deoxygenation device 200 can consume or filter the oxygen in the reaction vessel 100 to avoid excessive accumulation of oxygen in the reaction vessel 100. Especially in the biogas exhaust stage, the oxygen in the reaction vessel 100 can be removed in time, so that the focus is shifted from how to better seal to a combination of sealing and deoxygenation to achieve long-term maintenance of an oxygen-free or oxygen-deficient atmosphere in the reaction vessel 100, thereby facilitating the fermentation of anaerobic microorganisms.

[0055] In the organic fertilizer production and processing equipment of the present invention, the deoxygenation device 200 consumes or filters the oxygen in the reaction vessel 100 to maintain an oxygen-free atmosphere in the reaction vessel 100. Even if the seal fails and outside air enters the reaction space, the fermentation environment of anaerobic bacteria can be prevented from being destroyed, the mixing of oxygen and biogas in the reaction space and the increase in reaction temperature can be avoided, thereby facilitating the fermentation reaction of anaerobic microorganisms, solving the problem of air easily entering the reaction vessel 100, and achieving the purpose of improving the quality of organic fertilizer.

[0056] In preferred embodiments of the present invention, the organic fertilizer production and processing equipment further includes a stirring device 300, comprising a stirring shaft 310 rotatably mounted on the reaction vessel 100 and a stirring blade 320 connected thereto, for stirring the organic raw material; and the deoxygenating devices 200 are located on the stirring shaft 310 and spaced apart along the longitudinal direction of the stirring shaft 310. In this embodiment, the deoxygenating devices 200 are spaced apart along the longitudinal direction of the stirring shaft 310, so that the deoxygenating devices 200 can be densely distributed within the organic raw material, deoxygenating the organic raw material from all locations, thereby preventing oxygen accumulation in localized areas of the organic raw material.

[0057] In some preferred embodiments of the present invention, the stirring shaft 310 includes a main shaft 311 and a central shaft 312. The main shaft 311 is in the form of a sleeve, with a reaction port 313 formed on the wall, connecting the inside and outside. A first waterproof and breathable membrane 314 is provided on the reaction port 313. The stirring blades 320 are formed on the outer periphery of the main shaft 311. The central shaft 312 is coaxially rotatably connected to the main shaft 311. The deoxygenating device 200 is located on the central shaft 312, and an exhaust channel 316 is formed in the central shaft 312, connecting the deoxygenating devices 200. In this embodiment, the main shaft 311 serves as a carrier for the stirring blades 320, allowing for a relatively thick wall. The central shaft 312 is rotatably connected to form the exhaust channel 316 from the center of the main shaft 311, facilitating manufacturing and assembly.

[0058] In some preferred embodiments of the present invention, the deoxygenator 200 is configured to consume oxygen in the annulus between the main shaft 311 and the central shaft 312 through an electrochemical reaction. The reaction port 313 is located on at least two opposite sides of the main shaft 311. A pressurized channel 315 is provided on the central shaft 312, arranged between two adjacent deoxygenators 200 and interlaced with the exhaust channel 316. The pressurized channel 315 radially extends through the central shaft 312 and is arranged in a sieve-shaped pattern. A pressurized blower 330 is provided within the pressurized channel 315 for pressurizing and transporting gas from one side of the annulus to the other side. This embodiment achieves air distribution from opposite sides of the main shaft 311, particularly when exhausting gas from bottom to top, facilitating the dispersion of organic raw materials, achieving heat dissipation and pneumatic agitation of the organic raw materials, and further facilitating anaerobic microbial fermentation.

[0059] In some preferred embodiments of the present invention, the deoxygenation device 200 includes a cathode layer 210, an anode layer 220, and a second waterproof, breathable membrane 230. The cathode layer 210 is wound in a sleeve-like shape and protrudes from the periphery of the central axis 312, forming a reaction chamber filled with electrolyte with the wall of the central axis 312. The anode layer 220 is wound in a sleeve-like shape and coaxially sleeved within the cathode layer 210, immersed in the electrolyte. Air vents are coaxially formed at both ends of the anode layer 220, communicating with the exhaust passage 316. The second waterproof, breathable membrane 230 is interposed between the air vents and the exhaust passage 316. Deoxygenation is achieved through an electrochemical reaction, making the deoxygenation efficiency adjustable based on the amount of oxygen in the annular space, i.e., deoxygenation is performed with greater efficiency when the oxygen concentration is high and with less efficiency when the oxygen concentration is low. As some alternative embodiments of the present invention, the deoxygenation device 200 includes a deoxygenation air duct, a first waterproof breathable membrane 314 and an electrolysis assembly, wherein the deoxygenation air duct connects the inner and outer spaces of the reaction vessel 100 and forms a reaction port 313 that communicates with the inner space of the reaction vessel 100; the first waterproof breathable membrane 314 is arranged on the reaction port 313; the cathode layer 210 and the anode layer 220 form an electrolysis assembly, and the cathode of the electrolysis assembly is close to the waterproof breathable membrane, which is used to consume the oxygen in the reaction vessel 100 by an electrochemical reaction. As some other alternative embodiments of the present invention, the deoxygenation device 200 includes a deoxygenation air duct, a first waterproof and breathable membrane 314, a first deoxygenation conditioning membrane and a fan assembly, wherein the deoxygenation air duct connects the inner and outer spaces of the reaction vessel 100 and forms a reaction port 313 that communicates with the inner space of the reaction vessel 100; the first waterproof and breathable membrane 314 is arranged on the reaction port 313; the first deoxygenation conditioning membrane is arranged in the deoxygenation air duct for passing oxygen; the fan assembly is arranged in the deoxygenation air duct and downstream of the first deoxygenation conditioning membrane, for drawing the air in the reaction space to the first deoxygenation conditioning membrane and discharging the oxygen that has passed through the first deoxygenation conditioning membrane.

[0060] In some preferred embodiments of the present invention, the deoxygenator 200 forms an exhaust port (not shown) communicating with the outside of the reaction vessel 100. Furthermore, the organic fertilizer production and processing equipment further includes a second deoxygenating and conditioning membrane disposed within the exhaust port to prevent air outside the reaction vessel 100 from entering the exhaust port, and an airflow density detection module disposed within the exhaust port, upstream of the second deoxygenating and conditioning membrane, to detect the concentration of oxygen exhausted from the deoxygenator 200. The oxygen concentration measured at the exhaust port can reflect the degree of seal failure, facilitating improvements to the sealing structure and biogas exhaust method.

[0061] In some preferred embodiments of the present invention, the organic fertilizer production and processing equipment further includes a fan assembly and a control module, wherein the fan assembly is arranged at the exhaust port and upstream of the second deoxygenating and conditioning membrane, and is used to discharge oxygen from the exhaust port; the control module is connected to the fan assembly and the airflow density detection module to be configured as follows:

[0062] Obtaining the current time and the biogas discharge time of the reaction vessel 100;

[0063] Determine whether the current time is within the first set time after the expiration time of the drainage time,

[0064] If yes, shut down the fan assembly and the airflow density detection module;

[0065] If not,

[0066] In response to the current moment being before the cut-off moment and being greater than a second set time period from the cut-off moment, the fan assembly is at the first speed; or

[0067] In response to the current moment being at the start moment of the drainage time and the time interval from the start moment being greater than a third set time, the fan assembly is at the second speed; or

[0068] In response to whether the airflow density measured by the airflow density detection module is greater than a set density, the fan assembly is at a third speed; and

[0069] The first speed, the second speed, and the third speed increase sequentially.

[0070] This embodiment uses different speeds of fans to actively exhaust air according to the oxygen content in the reaction space. In particular, the exhaust speed is proportional to the oxygen content to achieve rapid deoxygenation, making it easier to maintain an oxygen-free or oxygen-depleted atmosphere in the reaction space.

[0071] At this point, those skilled in the art will recognize that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. An organic fertilizer production and processing equipment, characterized in that: include: A reaction container, wherein the reaction container is configured to contain organic raw materials for dry anaerobic fermentation reaction; a deoxygenation device, the deoxygenation device being disposed in the reaction vessel and configured to consume oxygen in the reaction vessel; The organic fertilizer production and processing equipment also includes: A stirring device, comprising a stirring shaft rotatably mounted on the reaction container and a stirring blade connected thereto, for stirring the organic raw material; and The deoxygenation devices are located on the stirring shaft and are distributed at intervals along the shaft length direction of the stirring shaft; The stirring shaft comprises: A main shaft, the main shaft is in the form of a sleeve and has a reaction port communicating with the inside and outside formed on the wall of the sleeve, a first waterproof and breathable membrane is provided on the reaction port, and the stirring blade is formed on the outer periphery of the main shaft; A central shaft, wherein the central shaft is coaxially rotatably connected to the main shaft through a sleeve, the deaerator is located on the central shaft, and an exhaust passage connecting the deaerators is formed in the central shaft; The deoxygenation device is configured to consume oxygen in the annulus between the main shaft and the central shaft by an electrochemical reaction; and The reaction port is located at least on two opposite sides of the main axis, and is provided on the central axis between two adjacent deoxygenation devices and is staggered with the exhaust channel space and radially penetrates the central axis. A pressurized fan is provided in the pressurized channel for pressurizing the gas in one side of the annulus and transporting it to the other side.

2. The organic fertilizer production and processing equipment according to claim 1, characterized in that: The deoxidation device comprises: A cathode layer, the cathode layer is wound in a sleeve shape and exposed from the outer periphery of the central axis, and together with the cylinder wall of the central axis, forms a reaction chamber filled with electrolyte; an anode layer, the anode layer is wound in a sleeve shape and coaxially sleeved in the cathode layer and immersed in the electrolyte, and has air permeable openings coaxially arranged at both ends of the anode layer, the air permeable openings being communicated with the exhaust channel; A second waterproof and breathable membrane is provided between the breathable opening and the exhaust passage.

3. The organic fertilizer production and processing equipment according to claim 1, characterized in that: The reaction ports are arranged in pairs on opposite sides of the main shaft, the two reaction ports in the same pair are staggered radially on the main shaft and staggered radially with the booster fan on the central shaft, and the relatively distant ends of the two reaction ports in the same pair are arranged in the annulus and connected to the bearings of the main shaft and the central shaft.

4. The organic fertilizer production and processing equipment according to claim 1, characterized in that: The deoxygenation device forms an exhaust port communicating with the outside of the reaction container; and The organic fertilizer production and processing equipment also includes: a second deoxygenating and conditioning membrane, the second deoxygenating and conditioning membrane being arranged in the exhaust port and being used for preventing the air outside the reaction container from entering the exhaust port; An airflow density detection module is disposed in the exhaust port and upstream of the second deoxygenating conditioning membrane, and is used to detect the oxygen concentration exhausted from the deoxygenating device.

5. The organic fertilizer production and processing equipment according to claim 4, characterized in that: The organic fertilizer production and processing equipment also includes: A fan assembly, the fan assembly being arranged at the exhaust port and upstream of the second deoxygenating and conditioning membrane, and being used for exhausting oxygen from the exhaust port; A control module, wherein the control module is connected to the fan assembly and the airflow density detection module to be configured as follows: Obtaining the current time and the biogas discharge time of the reaction container; Determine whether the current time is within the first set time after the end time of the drainage time, If yes, shut down the fan assembly and the airflow density detection module; If not, In response to the current moment being before the cut-off moment and the distance to the cut-off moment being greater than a second set time length, the fan assembly is at a first speed; or In response to the current moment being at the start moment of the drainage time and the time interval from the start moment being greater than a third set time, the fan assembly is at a second speed; or In response to whether the airflow density measured by the airflow density detection module is greater than a set density, the fan assembly is at a third speed; and The first rotational speed, the second rotational speed, and the third rotational speed increase sequentially.

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