An anaerobic fermentation reactor

Abstract

This utility model relates to the field of fermentation reactor technology, specifically to an anaerobic fermentation reactor. It solves the problem that stirring blades in existing anaerobic fermentation reactors easily affect fermentation efficiency, thus improving the practicality of the equipment. Its structure includes a tank body, a reaction chamber inside the tank, a control chamber at the top of the reaction chamber, a rotating shaft rotatably connected to the reaction chamber, and several stirring blades mounted on the rotating shaft. A control motor is located in the control chamber, and a control structure for intermittently controlling the rotation of the stirring blades is provided between the control motor and the rotating shaft. This embodiment replaces the existing technology of directly stirring microorganisms in the tank with stirring blades. This embodiment can reduce physical damage to microorganisms while ensuring thorough mixing and gas exchange, providing a more stable and suitable growth environment for microorganisms, thereby improving fermentation efficiency and the biotransformation capacity of microorganisms, and has strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of fermentation reactor technology, specifically to an anaerobic fermentation reactor. Background Technology

[0002] An anaerobic digester is a device used to carry out anaerobic fermentation processes in an anaerobic environment. It is commonly used in biomass degradation, waste treatment, wastewater treatment, and the production of biogas (such as methane). An anaerobic digester provides an anaerobic environment that allows anaerobic microorganisms to grow, reproduce, and decompose organic matter, ultimately producing biogas (mainly methane and carbon dioxide).

[0003] In order to ensure the uniform distribution of microorganisms, existing anaerobic fermentation reactors are equipped with stirring blades inside the reactor. The stirring blades agitate the microorganisms to ensure that they are evenly distributed within the reaction.

[0004] While this method can achieve a uniform distribution of microorganisms, the following problems still exist: the operation of the stirring blades may not only lead to excessive mixing of gases, disrupting the stable anaerobic environment inside the reactor, but the mechanical movement of the stirring blades may also cause direct physical damage to microbial cells, affecting the natural aggregation and community structure of microorganisms, and disrupting the interaction and metabolic pathways of microorganisms during anaerobic fermentation. Utility Model Content

[0005] This invention proposes an anaerobic fermentation reactor that solves the problem that stirring blades in existing anaerobic fermentation reactors can easily affect fermentation efficiency, thus improving the practicality of the equipment.

[0006] The technical solution of this utility model is as follows:

[0007] An anaerobic fermentation reactor includes a tank.

[0008] The tank is equipped with a reaction chamber, and the top of the reaction chamber is equipped with a control chamber. The reaction chamber is equipped with a rotating shaft that is rotatably connected to it. The rotating shaft is equipped with several stirring blades. The control chamber is equipped with a control motor. The control motor and the rotating shaft are equipped with a control structure for intermittently controlling the rotation of the stirring blades.

[0009] Furthermore, the control structure includes a first control component and a second control component, which are connected together. The output shaft of the control motor is fixedly connected to the second control component. A first gear is fixed on the first control component, and a second gear is fixed on the rotating shaft. The first gear and the second gear mesh.

[0010] Furthermore, the first control component has a plurality of first limiting grooves on its outer periphery. The first limiting grooves are arc-shaped, and each adjacent first limiting groove is provided with a connecting part. The connecting part is provided with a second limiting groove. The second control component is circular and has a sliding notch. The first limiting grooves are slidably connected to the second control component. A limiting rod is fixed on the side of the second control component near the sliding notch. The limiting rod is slidably connected to the second limiting groove.

[0011] Furthermore, the stirring blade has a right-angled trapezoidal structure, and several reinforcing rods are welded and fixed between the stirring blade and the rotating shaft. Both the stirring blade and the reinforcing rods are made of polypropylene material.

[0012] Furthermore, the top of the tank is provided with a sealing cover, on which a feed pipe and a pressure relief pipe are provided. Both the feed pipe and the pressure relief pipe are connected to the reaction chamber, and a differential pressure gauge is also connected to the pressure relief pipe.

[0013] Furthermore, the tank includes a reaction section and a collection section. The reaction section has a cylindrical structure, and the collection section has a conical structure. A maintenance ladder is also fixed on the side wall of the tank. Several support feet are also fixed at the lower end of the collection section. An exhaust pipe is also fixed inside the collection section. An air pump is provided in the control chamber. The exhaust pipe is connected to the air pump. A discharge pipe is also fixed at the bottom of the collection section.

[0014] Furthermore, the sealing cover is also fixed with several lifting hooks, and the side wall of the reaction section is also provided with a viewing window.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] The working process of this embodiment is as follows: When stirring is required inside the tank, the drive motor is started, which drives the second control component to rotate. When the limiting rod on the second control component is inserted into the second limiting groove on the first control component, the first control component drives the stirring blade to rotate under the cooperation of the first gear and the second gear. When the limiting rod on the second control component disengages from the second limiting groove, the first limiting groove and the second control component slide to connect, and the stirring blade stops rotating, thereby realizing intermittent stirring of microorganisms inside the tank.

[0017] This embodiment sets up a reaction chamber and a control chamber inside the tank. The intermittent stirring motion of the stirring blades is controlled by the control structure, which replaces the existing technology of directly stirring the microorganisms in the tank by stirring the stirring blades. This embodiment can reduce physical damage to microorganisms while ensuring sufficient mixing of substances and gas exchange, and provide a more stable and suitable growth environment for microorganisms, thereby improving fermentation efficiency and the biotransformation capacity of microorganisms. It has strong practicality. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the existing technology;

[0020] Figure 2 This is a schematic diagram of the overall structure of this embodiment;

[0021] Figure 3 This is a schematic diagram of the internal structure of the control cavity in this embodiment;

[0022] Figure 4 This is a schematic diagram of the control structure in this embodiment;

[0023] Figure 5 This is a schematic diagram of the internal structure of the reaction chamber in this embodiment.

[0024] In the picture:

[0025] 1. Tank body; 11. Reaction section; 12. Collection section; 13. Support leg; 14. Discharge pipe; 15. Reaction chamber; 16. Control chamber; 2. Feed pipe; 3. Pressure relief pipe; 31. Differential pressure gauge; 4. Maintenance ladder; 5. Viewing window; 6. Sealing cover; 61. Lifting hook; 7. Rotating shaft; 71. Second gear; 72. First gear; 73. First control component; 731. First limiting groove; 732. Connecting part; 733. Second limiting groove; 74. Second control component; 741. Limiting rod; 742. Sliding notch; 75. Reinforcing rod; 76. Stirring blade; 8. Air pump; 81. Exhaust pipe; 9. Control motor. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0027] like Figures 2-5 As shown, this embodiment proposes an anaerobic fermentation reactor, whose structure includes a tank 1. In this embodiment, a reaction chamber 15 is disposed inside the tank 1, a control chamber 16 is disposed on top of the reaction chamber 15, a rotating shaft 7 is rotatably disposed inside the reaction chamber 15, a plurality of stirring blades 76 are disposed on the rotating shaft 7, and a control motor 9 is disposed inside the control chamber 16. A control structure is disposed between the control motor 9 and the rotating shaft 7 to intermittently control the rotation of the stirring blades 76.

[0028] The control structure in this embodiment includes a first control element 73 and a second control element 74, which are connected. The output shaft of the control motor 9 is fixedly connected to the second control element 74. A first gear 72 is fixedly mounted on the first control element 73, and a second gear 71 is fixedly mounted on the rotating shaft 7. The first gear 72 and the second gear 71 mesh. In this embodiment, the module of the first gear 72 is greater than the module of the second gear 71 and can be adjusted according to actual needs, so that the number of revolutions of the stirring blade 76 in a single rotation can be adjusted.

[0029] In this embodiment, several first limiting grooves 731 are disposed on the outer periphery of the first control member 73. The first limiting grooves 731 have an arc-shaped structure, and connecting portions 732 are disposed between adjacent first limiting grooves 731. Second limiting grooves 733 are disposed on the connecting portions 732. The second control member 74 has a circular structure, and a sliding notch 742 is disposed on the second control member 74. The first limiting grooves 731 and the second control member 74 are slidably connected. A limiting rod 741 is fixedly disposed on the side of the second control member 74 near the sliding notch 742, and the limiting rod 741 is slidably connected to the second limiting groove 733. With this design, when the first limiting groove 731 on the first control member 73 slides into contact with the second control member 74, the second control member 74 does not rotate; when the limiting rod 741 on the first control member 73 slides into contact with the second limiting groove 733, it will cause the first control member 73 to rotate. Therefore, under the drive of the first gear 72 and the second gear 71, the stirring blade 76 will rotate intermittently. This reduces the frequency of stirring by the stirring blade 76, thereby minimizing damage to the anaerobic environment of the microorganisms while ensuring a uniform distribution of microorganisms within the tank 1.

[0030] In this embodiment, the stirring blade 76 has a right-angled trapezoidal structure to conform to the shape of the tank 1. Several reinforcing rods 75 are welded and fixed between the stirring blade 76 and the rotating shaft 7. Both the stirring blade 76 and the reinforcing rods 75 are made of polypropylene. This allows both the stirring blade 76 and the reinforcing rods 75 to stir the tank 1, and the reinforcing rods 75 also enhance the structural strength of the stirring blade 76, reducing damage to the stirring blade 76.

[0031] In this embodiment, the sealing cap 6 is located on the top of the tank 1, and the feed pipe 2 and pressure relief pipe 3 are located on the sealing cap 6. Both the feed pipe 2 and pressure relief pipe 3 are connected to the reaction chamber 15, and the differential pressure gauge 31 is located on the pressure relief pipe 3. In this embodiment, the differential pressure gauge 31 can analyze the difference between the gas pressure inside the tank 1 and the gas pressure outside the tank 1, ensuring that the methane gas produced by the microorganisms in the tank 1 can be discharged in a timely manner during the fermentation process, improving the stability of the microbial growth environment inside the tank 1, and reducing safety hazards inside the tank 1.

[0032] In this embodiment, the tank 1 includes a reaction section 11 and a collection section 12. The reaction section 11 has a cylindrical structure to increase the reaction volume, allowing more substances to ferment. The collection section 12 has a conical structure to concentrate the fermented substances for easy discharge. A maintenance ladder 4 is fixedly installed on the side wall of the tank 1 to facilitate climbing by maintenance personnel or workers to feed or repair the tank 1. Several support feet 13 are fixedly installed at the lower end of the collection section 12 to raise the height of the tank 1, facilitating the installation of the discharge pipe 14. An exhaust pipe 81 is fixedly installed inside the collection section 12, and an air pump 8 is installed in the control chamber 16. The exhaust pipe 81 is connected to the air pump 8, and the discharge pipe 14 is also fixed at the bottom of the collection section 12. This exhaust pump 8 design uses the air pump 8 to supply air to the exhaust pipe 81, driving the bottom of the tank 1 to stir, replacing the existing technology that uses stirring blades 76 for stirring, thus reducing the damage to the fermented substances caused by the stirring blades 76. The exhaust pump 8 is designed to work in conjunction with the stirring blade 76 to improve the stirring efficiency of the stirring blade 76, depending on the actual situation; it can also be set up independently to reduce the damage to the fermentation environment of the fermenting material.

[0033] In this embodiment, several lifting hooks 61 are fixedly installed on the sealing cover 6 to facilitate the transportation of the sealing cover 6. The hooks can be moved away by a crane to facilitate maintenance personnel performing maintenance work on the tank 1. A viewing window 5 is installed on the side wall of the reaction section 11. The viewing window 5 used in this embodiment is to allow staff to promptly understand the fermentation situation inside the tank 1 and to address the fermentation process in a timely manner.

[0034] The working process of this embodiment is as follows: When stirring is required inside the tank 1, the drive motor is started, which drives the second control component 74 to rotate. When the limiting rod 741 on the second control component 74 is inserted into the second limiting groove 733 on the first control component 73, the first control component 73 drives the stirring blade 76 to rotate under the cooperation of the first gear 72 and the second gear 71. When the limiting rod 741 on the second control component 74 is disengaged from the second limiting groove 733, the first limiting groove 731 and the second control component 74 slide to connect, and the stirring blade 76 stops rotating, thereby realizing intermittent stirring of microorganisms inside the tank 1.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An anaerobic fermentation reactor, comprising a tank (1), characterized in that, The tank (1) is provided with a reaction chamber (15), and a control chamber (16) is provided at the top of the reaction chamber (15). A rotating shaft (7) is rotatably connected to the reaction chamber (15). Several stirring blades (76) are provided on the rotating shaft (7). A control motor (9) is provided in the control chamber (16). A control structure for intermittently controlling the rotation of the stirring blades (76) is provided between the control motor (9) and the rotating shaft (7).

2. An anaerobic fermentation reactor according to claim 1, c h a r a c t e r i z e d in that The control structure includes a first control element (73) and a second control element (74), the first control element (73) and the second control element (74) are connected, the output shaft of the control motor (9) is fixedly connected to the second control element (74), a first gear (72) is fixed on the first control element (73), and a second gear (71) is fixed on the rotating shaft (7), the first gear (72) and the second gear (71) mesh.

3. An anaerobic fermentation reactor according to claim 2, c h a r a c t e r i z e d in that The first control member (73) has a plurality of first limiting grooves (731) on its outer periphery. The first limiting grooves (731) are arc-shaped. Each adjacent first limiting groove (731) is provided with a connecting part (732). The connecting part (732) is provided with a second limiting groove (733). The second control member (74) is circular. The second control member (74) is provided with a sliding notch (742). The first limiting grooves (731) and the second control member (74) are slidably connected. The second control member (74) has a limiting rod (741) fixed on the side near the sliding notch (742). The limiting rod (741) is slidably connected with the second limiting groove (733).

4. The anaerobic fermentation reactor according to claim 3, characterized in that, The stirring blade (76) has a right-angled trapezoidal structure. Several reinforcing rods (75) are welded and fixed between the stirring blade (76) and the rotating shaft (7). Both the stirring blade (76) and the reinforcing rods (75) are made of polypropylene.

5. An anaerobic fermentation reactor according to claim 4, characterized in that, The tank (1) is provided with a sealing cover (6) on the top. The sealing cover (6) is provided with a feed pipe (2) and a pressure relief pipe (3). The feed pipe (2) and the pressure relief pipe (3) are both connected to the reaction chamber (15). The pressure relief pipe (3) is also connected to a differential pressure gauge (31).

6. An anaerobic fermentation reactor according to claim 5, characterized in that, The tank (1) includes a reaction section (11) and a collection section (12). The reaction section (11) is a cylindrical structure, and the collection section (12) is a conical structure. A maintenance ladder (4) is also fixed on the side wall of the tank (1). Several support feet (13) are also fixed at the lower end of the collection section (12). An exhaust pipe (81) is also fixed inside the collection section (12). An air pump (8) is provided in the control chamber (16). The exhaust pipe (81) is connected to the air pump (8). A discharge pipe (14) is also fixed at the bottom of the collection section (12).

7. An anaerobic fermentation reactor according to claim 6, characterized in that, The sealing cover (6) is also fixed with several lifting hooks (61), and the side wall of the reaction part (11) is also provided with a viewing window (5).

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