A bacteria membrane fermentation device for bio-fertilizer production

Abstract

The utility model relates to biological fertilizer production technical field, concretely disclose a kind of fungus membrane fermentation device for biological fertilizer production, including bottom plate, fermentation tank being arranged at the top of the bottom plate, feed pipe being arranged at the top of the fermentation tank with sealing cover, discharge pipe being arranged at the bottom of the fermentation tank with valve, the inside of the fermentation tank is provided with rotating shaft, the outside wall of the rotating shaft is fixedly installed with the symmetrical distribution of stirring vane, the outside of the rotating shaft is provided with fungus membrane mechanism located above stirring vane;The fungus membrane mechanism includes two upper and lower distribution and is arranged in the fixed ring of rotating shaft outer wall, the inner wall of the fixed ring is fixedly installed with multiple connecting rods, by to fungus membrane carrier height flexible adjustment, material efficient mixing, environment accurate control and waste gas purification treatment, to significantly improve biological fertilizer fermentation efficiency and quality, reduce maintenance cost, guarantee green safe production.

Description

Technical Field

[0001] This utility model relates to the field of bio-fertilizer production, and specifically discloses a microbial membrane fermentation device for bio-fertilizer production. Background Technology

[0002] In the production of biofertilizers, the fermentation stage plays a decisive role in product quality and production efficiency. Microbial film fermentation technology, which relies on microorganisms forming a biofilm on a carrier surface, can efficiently decompose materials and produce abundant metabolites, and is gradually becoming an important method in biofertilizer production. However, current microbial film fermentation devices mostly use static fermenters or simple stirred reactors, which have the following technical drawbacks:

[0003] Traditional devices typically fix the microbial biofilm carrier to the side wall or bottom of the tank (such as a fixed bed packing layer). During fermentation, the carrier and the material are relatively stationary, which means that the microbial biofilm can only come into contact with the material in a limited area through diffusion. This results in low microbial metabolic efficiency and a long fermentation cycle, and therefore needs to be improved. Utility Model Content

[0004] This invention proposes a microbial film fermentation device for bio-fertilizer production. By flexibly adjusting the microbial film carrier, efficiently mixing materials, precisely controlling the environment, and purifying waste gas, it significantly improves the fermentation efficiency and quality of bio-fertilizer, reduces maintenance costs, and ensures green and safe production.

[0005] This utility model is implemented as follows: a microbial film fermentation device for bio-fertilizer production includes a base plate, a fermentation tank disposed on top of the base plate, a feed pipe with a sealing cap disposed on top of the fermentation tank, and a discharge pipe with a valve disposed at the bottom of the fermentation tank. A rotating shaft is disposed inside the fermentation tank, and symmetrically distributed stirring blades are fixedly installed on the outer wall of the rotating shaft. A microbial film mechanism is disposed outside the rotating shaft, located above the stirring blades. The microbial film mechanism includes two vertically distributed fixed rings disposed on the outer wall of the rotating shaft. Multiple connecting rods are fixedly installed on the inner wall of the fixed rings. The ends of the multiple connecting rods away from the fixed rings are jointly fixedly connected to a movable ring that is slidably connected to the outer wall of the rotating shaft. Grooves are formed on opposite sides of the two fixed rings. A cylindrical microbial film carrier with open ends is detachably connected between the two grooves by bolts. The outer wall of the microbial film carrier is mesh-like. Two electric actuators distributed front to back are disposed on the top of the fermentation tank. The output ends of the electric actuators penetrate the top of the fermentation tank and are fixedly connected to the fixed rings located above.

[0006] As a preferred embodiment of the biofilm fermentation device for bio-fertilizer production according to this utility model, a motor is fixedly installed on the top of the fermentation tank, and the output end of the motor is coaxially and fixedly connected to the rotating shaft.

[0007] As a preferred embodiment of the biofilm fermentation device for bio-fertilizer production according to this utility model, the top of the fermentation tank is equipped with an air pump. The output end of the air pump is connected to the top of the fermentation tank through a pipe, and the input end of the air pump is connected to an air inlet pipe. The other end of the air inlet pipe is connected to a filter box located on the top of the bottom plate. The filter box contains a primary filter, a medium-efficiency filter, and a high-efficiency filter that are detachably connected from bottom to top. The outer wall of the filter box is connected to an air vent pipe located below the primary filter.

[0008] As a preferred embodiment of the biofilm fermentation device for bio-fertilizer production according to this utility model, the top of the fermentation tank is connected to an air outlet pipe, the other end of the air outlet pipe is connected to an air purification sterilizer located on the top of the bottom plate, and the output end of the air purification sterilizer is connected to an exhaust pipe with a valve.

[0009] As a preferred embodiment of the biofilm fermentation device for bio-fertilizer production according to this utility model, a limiting block is fixedly installed on the outer wall of the rotating shaft between the stirring blade and the lower moving ring.

[0010] As a preferred embodiment of the biofilm fermentation device for bio-fertilizer production according to this utility model, the fermentation tank is equipped with a temperature sensor inside, and a heating plate is installed inside the jacket of the fermentation tank.

[0011] As a preferred embodiment of the biofilm fermentation device for bio-fertilizer production according to this utility model, the outer wall of the fermentation tank is connected to an observation tube with open ends, and an observation window is installed through the interior of the observation tube.

[0012] The beneficial effects of this utility model are:

[0013] 1. The motor drives the stirring blades to rotate, which fully mixes the material and the inoculum. At the same time, the electric push rod lowers the microbial film carrier into the material. Its mesh outer wall provides a large number of attachment sites for microorganisms. Under the stirring action, the contact area and contact frequency between the microbial film and the material are greatly increased, which promotes the decomposition and transformation of the material by microorganisms, accelerates the fermentation reaction process, and improves the yield of effective components of bio-fertilizer.

[0014] 2. An air pump, in conjunction with a multi-stage filtration system, delivers clean air to the fermenter to meet the aerobic fermentation requirements of microorganisms. A temperature sensor monitors the temperature inside the tank in real time and works with a heating plate to maintain the appropriate temperature for fermentation. Exhaust gas is purified and sterilized before being discharged in compliance with standards, creating a stable and pollution-free environment for microbial growth while minimizing the impact on the surrounding environment. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a front sectional view of a microbial film fermentation device for bio-fertilizer production according to the present invention.

[0017] Figure 2 This is a right-side sectional view of the fermenter of this utility model.

[0018] Figure 3 This is a structural diagram showing the disassembled structure of the bacterial film carrier of this utility model;

[0019] Figure 4 This is a top view of the fixed ring and the movable rod ring of this utility model.

[0020] The diagram shows the following components: 1. Base plate; 2. Fermentation tank; 201. Feed pipe; 2011. Discharge pipe; 202. Heating plate; 203. Temperature sensor; 3. Motor; 301. Rotating shaft; 302. Stirring blade; 303. Limiting block; 4. Biofilm mechanism; 401. Fixing ring; 4011. Groove; 402. Connecting rod; 403. Moving ring; 5. Biofilm carrier; 6. Electric actuator; 7. Air inlet pipe; 701. Air pump; 702. Filter box; 703. High-efficiency filter; 704. Medium-efficiency filter; 705. Primary filter; 8. Air outlet pipe; 801. Air purification sterilizer; 802. Exhaust pipe. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4A biofilm fermentation device for bio-fertilizer production includes a base plate 1, a fermentation tank 2 disposed on top of the base plate 1, a feed pipe 201 with a sealing cap disposed on top of the fermentation tank 2, and a discharge pipe 2011 with a valve disposed at the bottom of the fermentation tank 2. A rotating shaft 301 is disposed inside the fermentation tank 2, and symmetrically distributed stirring blades 302 are fixedly installed on the outer wall of the rotating shaft 301. A biofilm mechanism 4 is disposed outside the rotating shaft 301 above the stirring blades 302. The biofilm mechanism 4 includes two vertically distributed fixing rings 401 disposed on the outer wall of the rotating shaft 301, and the inner wall of the fixing rings 401... Multiple connecting rods 402 are fixedly installed. The ends of the multiple connecting rods 402 away from the fixed ring 401 are fixedly connected to a movable ring 403 that is slidably connected to the outer wall of the rotating shaft 301. Grooves 4011 are provided on opposite sides of the two fixed rings 401. A cylindrical microbial film carrier 5 with open upper and lower ends is detachably connected between the two grooves 4011 by bolts. The outer wall of the microbial film carrier 5 is mesh-like. Two electric push rods 6 are provided on the top of the fermenter 2, which are distributed front to back. The output end of the electric push rod 6 passes through the top of the fermenter 2 and is fixedly connected to the fixed ring 401 located above.

[0023] In this embodiment: the mixture of materials and microbial inoculum required for the production of bio-fertilizer is fed into fermentation tank 2. The motor 3 is started to drive the rotating shaft 301 and stirring blade 302 to rotate and stir the materials in the tank, so that the materials and microbial inoculum are fully mixed. At the same time, two electric push rods 6 lower the microbial film carrier 5 in the microbial film mechanism 4 to a suitable position (within the mixture of materials and microbial inoculum), so that the microbial inoculum adheres to the surface of the microbial film carrier 5 to form an initial microbial film. With the cooperation of the stirring blade 302, the contact between the microbial film and the materials is promoted, which is conducive to the growth of microorganisms and fermentation reaction. During the fermentation process, the height of the microbial film carrier 5 can be adjusted by the electric push rods 6 as needed to ensure the stable operation of the microbial film mechanism 4 and improve the yield of effective components of bio-fertilizer.

[0024] As a technical optimization of this utility model, a motor 3 is fixedly installed on the top of the fermentation tank 2, and the output end of the motor 3 is coaxially and fixedly connected to the rotating shaft 301.

[0025] In this embodiment: starting the motor 3 can drive the rotating shaft 301 to rotate.

[0026] As a technical optimization of this utility model, an air pump 701 is provided on the top of the fermentation tank 2. The output end of the air pump 701 is connected to the top of the fermentation tank 2 through a pipe, and the input end of the air pump 701 is connected to an air inlet pipe 7. The other end of the air inlet pipe 7 is connected to a filter box 702 located on the top of the bottom plate 1. The filter box 702 is detachably connected from bottom to top to a primary filter 705, a medium-efficiency filter 704, and a high-efficiency filter 703. The outer wall of the filter box 702 is connected to a ventilation pipe located below the primary filter 705.

[0027] In this embodiment: the primary filter 705 is made of non-woven fabric or metal mesh, and the mesh traps large particles such as dust, hair, and fibers. The secondary filter 704 is made of synthetic fiber or glass fiber, which intercepts small particles (pollen, mold spores, some bacteria, etc.). The high-efficiency filter 703 is made of ultra-fine glass fiber filter paper, which captures particles larger than 0.3μm (filtration efficiency ≥99.97%) such as viruses, fungal spores, and small bacteria through Brownian motion and electrostatic adsorption. The air pump 701 is started, so that the external air passes through the primary filter 705, secondary filter 704 and high-efficiency filter 703 in sequence before entering the fermenter 2, so as to deliver sterile air into the fermenter 2, meet the oxygen supply required for aerobic microbial fermentation, and at the same time prevent external bacteria, dust and other pollutants from entering the fermenter 2.

[0028] As a technical optimization of this utility model, the top of the fermenter 2 is connected to an air outlet pipe 8, and the other end of the air outlet pipe 8 is connected to an air purification sterilizer 801 located on the top of the bottom plate 1. The output end of the air purification sterilizer 801 is connected to an exhaust pipe 802 with a valve.

[0029] In this embodiment: the exhaust pipe 802 introduces the exhaust gas from the fermenter 2 into the air purification sterilizer 801. The air purification sterilizer 801 can be a commercially available ultraviolet activated carbon composite purification device. The air purification sterilizer 801 includes a sterilization unit, an adsorption unit, and a catalytic oxidation unit arranged sequentially along the airflow direction. The sterilization unit uses ultraviolet lamps for sterilization (wavelength 253.7nm, irradiation intensity ≥40μW / cm²). 2 The adsorption unit uses activated carbon adsorption plates, and the catalytic oxidation unit uses low-temperature catalytic oxidation with a Pt / Pd supported catalyst. The reaction temperature is 80-150℃. There are guide plates between each unit to ensure that the waste gas in fermenter 2 passes through the treatment module evenly. The sterilization unit kills microorganisms in the waste gas to prevent engineered bacteria or miscellaneous bacteria from spreading with the waste gas and reduce biosafety risks. The adsorption unit and catalytic unit remove odors and VOCs, solving the problem of "odor nuisance" in traditional fermentation devices.

[0030] As a technical optimization of this utility model, a limiting block 303 located between the stirring blade 302 and the lower moving ring 403 is fixedly installed on the outer wall of the rotating shaft 301. When the rotating shaft 301 rotates, the stirring blade 302 rotates accordingly to stir the material in the fermentation tank 2.

[0031] In this embodiment, the limiting block 303 is located between the stirring blade 302 and the lower moving ring 403, which can prevent the moving ring 403 from moving too far downward on the rotating shaft 301, and ensure that the moving ring 403 and its connected biofilm mechanism 4 (such as the fixed ring 401, biofilm carrier 5, etc.) are kept in the right position, so that the biofilm mechanism 4 can function stably.

[0032] As a technical optimization of this utility model, a temperature sensor 203 is installed inside the fermentation tank 2, and a heating plate 202 is installed inside the jacket of the fermentation tank 2.

[0033] In this embodiment: the temperature sensor 203 can monitor the temperature change of the material in the fermentation tank 2 in real time, and the heating plate 202 is used to heat the bio-fertilizer in the fermentation tank 2.

[0034] As a technical optimization of this utility model, the outer wall of the fermentation tank 2 is connected to an observation tube with open ends, and an observation window is installed through the inside of the observation tube.

[0035] In this embodiment: the observation window facilitates the observation of the amount of bio-fertilizer in fermenter 2 and the fermentation status.

[0036] The working principle and usage process of this utility model are as follows: When in use, the device is electrically connected to an external power supply and a PLC controller. Through the feed pipe 201, the mixture of materials and inoculum required for the production of bio-fertilizer is fed into the fermentation tank 2. The motor 3 is started to drive the rotating shaft 301 and the stirring blade 302 to rotate and stir the materials in the tank, so that the materials and inoculum are fully mixed. At the same time, the two electric push rods 6 at the top of the fermentation tank 2 are started. The output ends of the two electric push rods 6 drive the fixed ring 401 located above to lower the biofilm carrier 5 in the biofilm mechanism 4 to a suitable position (inside the mixture of materials and inoculum). The outer wall of the biofilm carrier 5 is mesh-like, providing a place for microorganisms to attach and grow, so that the inoculum attaches to the surface of the biofilm carrier 5 to form an initial biofilm. With the cooperation of the stirring blade 302, the contact between the biofilm and the materials is promoted, which is conducive to the growth of microorganisms and fermentation reaction.

[0037] During fermentation, the height of the biofilm carrier 5 can be adjusted as needed via the electric actuator 6. For example, in the early stages of fermentation, the biofilm carrier 5 can be lowered to fully immerse it in the material, increasing the contact area between the biofilm and the material. In the later stages of fermentation, the biofilm carrier 5 can be raised to reduce disturbance to the material. The limiting block 303 prevents the lower moving ring 403 from moving excessively downward, ensuring the stable operation of the biofilm mechanism 4 and improving the yield of effective components in the bio-fertilizer. The air pump 701 is started to draw outside air into the filter box 702 through the air inlet pipe 7. The air passes through the primary filter 705, the medium-efficiency filter 704, and the high-efficiency filter 703 in sequence to remove dust. Impurities and microorganisms are removed, and clean air is delivered to the top of fermenter 2 through pipelines to provide oxygen for microbial fermentation inside the tank. At the same time, the temperature sensor 203 inside fermenter 2 monitors the temperature inside the tank in real time. When the temperature is lower than the set value, the PLC controller controls the heating plate 202 to heat up and maintain the appropriate temperature required for fermentation. The waste gas generated during fermentation is discharged from the exhaust pipe 8 and enters the air purification sterilizer 801. After purification and sterilization, it is discharged through the exhaust pipe 802 with a valve to meet the standards and avoid environmental pollution. Finally, the operator can quickly disassemble, clean or replace the bacterial film carrier 5 through the top cover of fermenter 2.

[0038] 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.

[0039] However, the above are merely specific embodiments 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. A microbial film fermentation device for bio-fertilizer production, comprising a base plate (1), a fermentation tank (2) with a sealing cap disposed on the top of the base plate (1), a feed pipe (201) with a sealing cap disposed on the top of the fermentation tank (2), and a discharge pipe (2011) with a valve disposed on the bottom of the fermentation tank (2), characterized in that: The fermenter (2) is equipped with a rotating shaft (301) inside. Symmetrically distributed stirring blades (302) are fixedly installed on the outer wall of the rotating shaft (301). A biofilm mechanism (4) is provided on the outside of the rotating shaft (301) above the stirring blades (302). The biofilm mechanism (4) includes two vertically distributed fixing rings (401) on the outer wall of the rotating shaft (301). Multiple connecting rods (402) are fixedly installed on the inner wall of the fixing rings (401). The ends of the multiple connecting rods (402) away from the fixing rings (401) are fixed together. A movable ring (403) is connected to the outer wall of the rotating shaft (301). The two fixed rings (401) are provided with grooves (4011) on opposite sides. A cylindrical microbial film carrier (5) with open ends is detachably connected between the two grooves (4011) by bolts. The outer wall of the microbial film carrier (5) is mesh-like. Two electric push rods (6) are provided on the top of the fermenter (2) and are distributed in front and behind. The output end of the electric push rod (6) passes through the top of the fermenter (2) and is fixedly connected to the fixed ring (401) located above.

2. The microbial film fermentation device for bio-fertilizer production according to claim 1, characterized in that: A motor (3) is fixedly installed on the top of the fermentation tank (2), and the output end of the motor (3) is coaxially and fixedly connected to the rotating shaft (301).

3. The microbial film fermentation device for bio-fertilizer production according to claim 1, characterized in that: An air pump (701) is installed on the top of the fermentation tank (2). The output end of the air pump (701) is connected to the top of the fermentation tank (2) through a pipe, and the input end of the air pump (701) is connected to an air inlet pipe (7). The other end of the air inlet pipe (7) is connected to a filter box (702) installed on the top of the bottom plate (1). The filter box (702) is detachably connected from bottom to top to a primary filter (705), a medium-efficiency filter (704), and a high-efficiency filter (703). The outer wall of the filter box (702) is connected to an air vent pipe located below the primary filter (705).

4. The microbial film fermentation device for bio-fertilizer production according to claim 1, characterized in that: The top of the fermenter (2) is connected to an air outlet pipe (8), and the other end of the air outlet pipe (8) is connected to an air purification sterilizer (801) located on the top of the bottom plate (1). The output end of the air purification sterilizer (801) is connected to an exhaust pipe (802) with a valve.

5. The microbial film fermentation device for bio-fertilizer production according to claim 1, characterized in that: A limiting block (303) is fixedly installed on the outer wall of the rotating shaft (301) between the stirring blade (302) and the lower moving ring (403).

6. The microbial film fermentation device for bio-fertilizer production according to claim 1, characterized in that: A temperature sensor (203) is installed inside the fermentation tank (2), and a heating plate (202) is installed inside the jacket of the fermentation tank (2).

7. The microbial film fermentation device for bio-fertilizer production according to claim 1, characterized in that: The outer wall of the fermenter (2) is connected to an observation tube with open ends, and an observation window is installed through the inside of the observation tube.

Images