Vertical anaerobic fermentation tank

Abstract

The utility model relates to the technical field of vertical anaerobic fermentation tanks, and provides a vertical anaerobic fermentation tank which comprises a tank body, the tank body is provided with a feed port and a discharge port, a stirring rod is arranged in the tank body, a stirring motor is arranged at the top of the tank body, the stirring motor is fixedly connected with the stirring rod, the stirring rod is fixedly connected with a disc, and the disc is fixedly connected with the stirring rod. The disc is fixedly connected with a plurality of turbine blades, the turbine blades are circumferentially arranged around the disc, and the stirring rod is further provided with an auxiliary stirring structure used for stirring materials close to the edge of the tank body. According to the technical scheme, the problem that the fermentation effect is affected due to the fact that materials close to the edge of the tank body cannot be fully stirred in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical anaerobic fermentation tanks, and specifically relates to a vertical anaerobic fermentation tank. Background Art

[0002] Vertical anaerobic fermentation tank is a common and important equipment used for microbial fermentation production. Its main principle is to use enzymes produced by microbial metabolism to carry out biochemical reactions on substrates in a closed tank by controlling the temperature, oxygen and nutrient supply, so as to achieve the production of target products. Vertical anaerobic fermentation tanks usually adopt a vertical cylindrical shape with a certain height and diameter ratio to provide sufficient stirring space and surface area.

[0003] The prior art discloses a vertical anaerobic fermentation tank, comprising a tank body, a driving motor arranged on the tank body, a stirring shaft extending into the tank body and linked to the driving motor, and a turbine propeller arranged on the stirring shaft. A feed port is arranged on the upper side of one side of the tank body, a discharge port is arranged at the bottom, an end cover is arranged at the feed port, a cooling pipe is installed on the inner wall of the tank body, the inlet and outlet of the cooling pipe extend to the outside of the tank body, and a gas generator is arranged at the bottom end of the tank body.

[0004] The above-mentioned prior art uses a turbine impeller to stir the material in the tank body, but the stirring range of the turbine impeller is usually limited to the area around it, and the stirring intensity gradually weakens with the increase of the distance between the material and the agitator. Therefore, the material near the edge of the tank body often cannot be fully stirred and mixed, resulting in uneven stirring of the material in some areas, which in turn affects the fermentation effect. Utility Model Content

[0005] The utility model provides a vertical anaerobic fermentation tank, which solves the problem in the related art that the material near the edge of the tank body cannot be fully stirred, thus affecting the fermentation effect.

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

[0007] A vertical anaerobic fermentation tank comprises a tank body, wherein the tank body is provided with a feed inlet and a discharge outlet, a stirring rod is provided inside the tank body, a stirring motor is provided on the top of the tank body, the stirring motor is fixedly connected to the stirring rod, the stirring rod is fixedly connected to a disc, a plurality of turbine blades are fixedly connected to the disc, the plurality of turbine blades are arranged in a circle around the disc, and the stirring rod is also provided with an auxiliary stirring structure for stirring materials near the edge of the tank body.

[0008] Furthermore, the cross section of the turbine blade is an "L"-shaped structure.

[0009] Furthermore, the auxiliary stirring structure includes a plurality of auxiliary rods, the auxiliary rods extending from the stirring rod to the edge of the tank body, the positions of the auxiliary stirring rods and the turbine blades corresponding one to one, and the ends of the auxiliary rods are fixedly connected with auxiliary stirring blades.

[0010] Furthermore, the auxiliary stirring blade is in contact with the inner wall of the tank body, and the auxiliary stirring blade is provided with a curved surface for guiding the material located at the edge of the tank body to the middle of the tank body.

[0011] Furthermore, a gas one-way valve is provided on the top of the tank body, the gas inlet of the gas one-way valve is located inside the tank body, and the gas outlet of the gas one-way valve is located outside the tank body.

[0012] Furthermore, the tank body includes a tank cover, a tank bottom, and multiple tank bodies, the tank body is located in the middle of the tank cover and the tank bottom, adjacent tank bodies are fixedly connected to each other, the tank cover and the tank bottom are both fixedly connected to the tank body, the feed port is located at the tank cover, the discharge port is located at the tank bottom, and the tank bottom is also provided with a liquid discharge pipe.

[0013] The working principle and beneficial effects of the utility model are:

[0014] The utility model drives the stirring rod to rotate through the stirring motor, and the stirring rod drives the disc and the auxiliary stirring structure to rotate. The rotation of the disc drives the turbine blades to rotate. The rotation of the turbine blades stirs the material in the middle of the tank body, and the auxiliary stirring structure stirs the material near the edge of the tank body, thereby achieving full stirring of the material inside the tank body. The utility model solves the problem in the related art that the material near the edge of the tank body cannot be fully stirred, which affects the fermentation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a front view of the utility model;

[0018] Figure 3 for Figure 2 Sectional view at AA;

[0019] Figure 4 It is a schematic diagram of the stirring rod structure in the utility model.

[0020] In the figure: 1. tank body; 2. stirring rod; 3. stirring motor; 4. discharge port; 5. feed port; 6. liquid outlet pipe; 7. gas one-way valve; 10. tank cover; 11. tank body; 12. tank bottom; 20. disc; 21. turbine blade; 22. auxiliary rod; 23. auxiliary stirring blade. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1 to Figure 4 As shown, this embodiment proposes a vertical anaerobic fermentation tank, including a tank body 1, the tank body 1 is provided with a feed inlet 5 and a discharge port 4, a stirring rod 2 is provided inside the tank body 1, a stirring motor 3 is provided on the top of the tank body 1, the stirring motor 3 is fixedly connected to the stirring rod 2, the stirring rod 2 is fixedly connected with a disc 20, a plurality of turbine blades 21 are fixedly connected to the disc 20, and the plurality of turbine blades 21 are arranged in a circle around the disc 20, and the stirring rod 2 is also provided with an auxiliary stirring structure for stirring the material near the edge of the tank body 1. The disc 20 is a connecting platform for the turbine blade 21, and the turbine blade 21 can be fixedly connected to the stirring rod 2 through the connection between the turbine blade 21 and the disc 20, so that the turbine blade 21 can be fixedly connected to the stirring rod 2, and then when the stirring rod 2 rotates, it can drive the turbine blade 21 to move, thereby generating turbulence and stirring effects. The turbine blades 21 are used to stir the material near the turbine blades 21. The power is transmitted through the stirring rod 2 fixedly connected to the stirring motor 3, so that the turbine blades 21 rotate and stir the material near them. The multiple turbine blades 21 arranged in a circle around the disc 20 can produce a better stirring effect and a larger stirring range, thereby being able to fully stir the material near them, and the eddy currents and turbulences generated by their rotation can fully stir the material in a larger range above and near them.

[0023] In this embodiment, the turbine blade 21 has an "L"-shaped cross-section. The turbine blade 21 with an "L"-shaped cross-section is conducive to generating more eddies and turbulence during rotation; and it can improve the stirring range, so that the agitator can more effectively cover more areas inside the tank body 1, achieving a faster and better stirring effect. The turbine blade 21 with an "L"-shaped cross-section also has the effect of increasing its contact area with the material, which will make the friction and shear effect between the material and the blade stronger, thereby accelerating the mixing and reaction rate of the material and improving the stirring efficiency; and it also helps to improve the fluidity of the material around the turbine blade 21, so that the material can be stirred and mixed more smoothly, reducing the possibility of restricted material flow.

[0024] In this embodiment, the auxiliary stirring structure includes a plurality of auxiliary rods 22, which extend from the stirring rod 2 to the edge of the tank body 1. The positions of the auxiliary stirring rods 2 and the turbine blades 21 correspond one to one, and the ends of the auxiliary rods 22 are fixedly connected with auxiliary stirring blades 23. The auxiliary rods 22 are used to extend the stirring effect of the stirring rods 2 to the edge area of ​​the tank body 1, so that the materials near the edge of the tank body 1 can also be effectively stirred and mixed. Through the extension of the auxiliary rods 22, the area that the turbine blades 21 cannot directly cover can be covered, thereby reducing the dead angle near the edge of the tank body 1 and improving the uniformity and efficiency of stirring. At the same time, the auxiliary rods 22 have the function of connecting the auxiliary stirring blades 23. Since the shear force and stirring effect of the auxiliary rods 22 as a whole cannot achieve very excellent results, it is necessary to use the auxiliary stirring blades 23 to fully stir the materials at the edge of the tank body 1. The auxiliary stirring blades 23 are used to ensure that the materials at the edge of the tank body 1 can be fully stirred, which can make the materials near the edge of the tank body 1 have more contact with other materials, thereby increasing their contact area. This helps to improve the mixing efficiency of the materials themselves, accelerate the reaction rate, and improve the efficiency of the fermentation process. The cooperation of the auxiliary mixing blades and the turbine blades 21 can ensure that all materials can be fully mixed and contacted during the entire fermentation process, and ultimately achieve excellent fermentation efficiency.

[0025] In this embodiment, the auxiliary stirring blades 23 abut against the inner wall of the tank body 1, and the auxiliary stirring blades 23 are configured to guide the material located at the edge of the tank body 1 to the curved surface in the middle of the tank body 1. The auxiliary stirring blades 23 abut against the inner wall of the tank bottom 12 to ensure that the material near the edge of the tank body 1 can also be effectively stirred and mixed; at the same time, it can effectively prevent the material from sliding along the inner wall of the tank body 1 without being fully mixed. The curved surface of the auxiliary stirring blades 23 helps to improve the fluidity of the material in the tank body 1, so that the material can be stirred and mixed more smoothly, reducing the possibility of restricted material flow, and further improving the stirring effect; at the same time, the curved surface guides the material at the edge of the tank body 1 to the middle of the tank body 1, so that these materials are mixed with the material in the middle, thereby improving the fermentation efficiency.

[0026] In this embodiment, a gas one-way valve 7 is provided on the top of the tank body 1, the air inlet of the gas one-way valve 7 is located inside the tank body 1, and the air outlet of the gas one-way valve 7 is located outside the tank body 1. The function of the gas one-way valve 7 is to control the flow direction of the gas, prevent external air from entering the tank body 1 and maintain the internal anaerobic environment. At the same time, the excess gas inside the tank body 1 is discharged. During the fermentation process, the gas produced by microbial metabolism (such as methane, carbon dioxide, etc.) needs to be discharged from the tank body 1 in time to avoid excessive pressure affecting the fermentation process. The gas one-way valve 7 can ensure that the gas can only be discharged from the inside of the tank body 1 and cannot flow back, thereby effectively discharging the generated gas, thereby achieving the function of regulating the gas pressure in the tank body 1, ensuring that the gas pressure in the tank is within a suitable range, which is conducive to maintaining the normal progress of the anaerobic fermentation process.

[0027] In this embodiment, the tank body 1 includes a tank cover 10, a tank bottom 12, and a plurality of tank bodies 11. The tank body 11 is located between the tank cover 10 and the tank bottom 12. Adjacent tank bodies 11 are fixedly connected to each other. The tank cover 10 and the tank bottom 12 are both fixedly connected to the tank body 11. The feed port 5 is located at the tank cover 10, the discharge port 4 is located at the tank bottom 12, and the tank bottom 12 is also provided with a liquid outlet pipe 6. The tank body 1 is composed of the tank cover 10, the tank bottom 12 and the plurality of tank bodies 11, which is conducive to selecting a fermentation tank of suitable height according to one's actual needs, avoiding the generation of unnecessary use costs, and the assembled tank body 1 is conducive to handling and installation, which can reduce transportation costs. For manufacturers, the tank body 1 that can be assembled at will means that the manufacturer does not need to manufacture tank bodies 1 of different heights as a whole, but only needs to manufacture multiple tank bodies 11, which can reduce the demand for different production molds and reduce production costs. The connection between the tank cover 10, the tank bottom 12 and the tank body 11 should adopt a connection method with very good sealing properties such as welding to avoid the exchange of air inside and outside the tank body 1, thereby affecting the fermentation effect. The liquid outlet pipe 6 is used to safely and quickly discharge the liquid inside the tank body 1 when cleaning the inside of the tank body 1, so as to facilitate the operator to replace and clean the internal materials.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vertical anaerobic fermentation tank, comprising a tank body (1), wherein the tank body (1) is provided with a feed inlet (5) and a discharge outlet (4), wherein a stirring rod (2) is provided inside the tank body (1), and a stirring motor (3) is provided on the top of the tank body (1), wherein the stirring motor (3) is fixedly connected to the stirring rod (2), characterized in that: The stirring rod (2) is fixedly connected to a disk (20), and a plurality of turbine blades (21) are fixedly connected to the disk (20). The plurality of turbine blades (21) are arranged in a circle around the disk (20). The stirring rod (2) is also provided with an auxiliary stirring structure for stirring materials near the edge of the tank body (1).

2. A vertical anaerobic fermentation tank according to claim 1, characterized in that: The turbine blade (21) has an L-shaped cross section.

3. A vertical anaerobic fermentation tank according to claim 1, characterized in that: The auxiliary stirring structure comprises a plurality of auxiliary rods (22), wherein the auxiliary rods (22) extend from the stirring rod (2) toward the edge of the tank body (1), the positions of the auxiliary rods (22) and the turbine blades (21) correspond one to one, and the ends of the auxiliary rods (22) are fixedly connected with auxiliary stirring blades (23).

4. A vertical anaerobic fermentation tank according to claim 3, characterized in that: The auxiliary stirring blade (23) abuts against the inner wall of the tank body (1), and the auxiliary stirring blade (23) is provided with a curved surface for guiding the material located at the edge of the tank body (1) to the middle of the tank body (1).

5. A vertical anaerobic fermentation tank according to claim 1, characterized in that: A gas one-way valve (7) is provided on the top of the tank body (1), the gas inlet of the gas one-way valve (7) is located inside the tank body (1), and the gas outlet of the gas one-way valve (7) is located outside the tank body (1).

6. A vertical anaerobic fermentation tank according to claim 1, characterized in that: The tank body (1) comprises a tank cover (10), a tank bottom (12), and a plurality of tank bodies (11); the tank body (11) is located between the tank cover (10) and the tank bottom (12); adjacent tank bodies (11) are fixedly connected to each other; the tank cover (10) and the tank bottom (12) are both fixedly connected to the tank body (11); the feed port (5) is located on the tank cover (10); the discharge port (4) is located on the tank bottom (12); and the tank bottom (12) is also provided with a liquid discharge pipe (6).

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