Low-temperature anaerobic fermentation tank
By introducing a stirring component and an exhaust system into the low-temperature anaerobic fermentation tank, the problems of uneven material mixing and unstable pressure were solved, achieving uniform material mixing and stable fermentation environment, thereby improving fermentation efficiency and gas resource utilization.
Patent Information
- Application Number
- CN202520220373.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-02-12
AI Technical Summary
In existing low-temperature anaerobic fermentation tanks, the material becomes viscous during the stirring process, which increases the stirring resistance, makes it difficult to achieve uniformity, affects the contact between microorganisms and substrate, resulting in low fermentation efficiency, and increases equipment maintenance costs due to material accumulation.
The mixing assembly includes a first stirring rod and a second stirring rod. It achieves all-round mixing through a motor-driven rotating shaft and gear system. Combined with the design of inclined feed inlet and discharge outlet, and timely exhaust pipe to collect gas, it ensures uniform mixing of materials and stable pressure.
This process ensures full contact between microorganisms and substrates, avoids local overheating or overcooling, improves fermentation efficiency, reduces accumulation, maintains a stable fermentation environment, promotes efficient fermentation, and enables the utilization of gas resources.
Smart Images
Figure CN223674631U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fermentation tank technical field, concretely relates to a low temperature anaerobic fermentation tank. BACKGROUND
[0002] The low temperature anaerobic fermentation tank has specific sealing structure and heat preservation performance, can create relatively stable low temperature (usually in the suitable range of 15 DEG C to 30 DEG C) anaerobic environment, in this environment, corn straw and cow dung are mixed and put in according to scientific and reasonable proportion, and the mixture is decomposed and converted gradually by the action of anaerobic microbial flora adapting to low temperature conditions, and the organic matter is subjected to a series of biochemical reactions under the condition of oxygen-free, on the one hand, the biogas rich in methane and other combustible gases is produced, which can be used as clean energy for power generation, heating, cooking and other fields, on the other hand, the biogas residue and biogas slurry rich in nitrogen, phosphorus, potassium and other nutrient elements are generated, and after subsequent treatment, can become high-quality organic fertilizer to return to farmland, so that the reduction, harmlessness and resource utilization of agricultural waste are realized, the benign circulation and sustainable development of agricultural ecological system are promoted, and the key role in the resource utilization of agricultural waste is played.
[0003] The existing low temperature anaerobic fermentation tank will make the flowability of fermentation raw materials poor due to low temperature, which leads to that when the materials in the fermentation tank are stirred, the stirring resistance increases due to the viscosity of the materials, the expected stirring effect is difficult to achieve, uneven stirring will cause local overheating or overcooling of the materials, and the microorganisms and substrates are difficult to fully contact, thereby affecting the fermentation efficiency, reducing the biogas production and biogas fertilizer quality, and the phenomenon of material accumulation occurs, which increases the equipment maintenance cost and failure risk. UTILITY MODEL CONTENT
[0004] The utility model mainly aims at providing a low temperature anaerobic fermentation tank to overcome the problems in the prior art.
[0005] To solve the above technical problems, the utility model adopts the following technical scheme:
[0006] A low temperature anaerobic fermentation tank, comprising a fermentation tank body, a cavity is formed in one side of the inside of the fermentation tank body, and a stirring assembly is arranged in the inside of the fermentation tank body.
[0007] The stirring assembly comprises a first stirring rod and a second stirring rod, a motor is arranged at the top of the fermentation tank body, and the motor is used to drive the first stirring rod and the second stirring rod to fully stir the materials in the inside of the fermentation tank body.
[0008] Further, the output end of the fermentation tank body is fixedly connected with a rotating shaft, the rotating shaft extends through the fermentation tank body to the inside of the cavity, the rotating shaft is rotationally connected with the fermentation tank body and the inside of the cavity, and the outer wall of the rotating shaft is provided with a fixing ring, and the two sides of the fixing ring are provided with connecting frames.
[0009] Further, the bottom of each of the two connecting frames is fixedly connected with a fixing rod, the number of the second stirring rods is set as two groups, each of the second stirring rods is fixedly installed on the outer wall of the corresponding fixing rod, and the number of each of the second stirring rods is set as a plurality.
[0010] Further, the outer wall of the cavity is fixedly connected with a driving gear, the driving gear is located in the inside of the cavity, the inside of the cavity is rotationally connected with a plurality of rotating rods, the outer wall of each of the rotating rods is fixedly connected with a driven gear, each of the driven gears is engaged with the driving gear, and each of the rotating rods extends through to the inside of the fermentation tank body.
[0011] Further, the number of the first stirring rods is set as a plurality, and each of the first stirring rods is arranged on the outer wall of the corresponding rotating rod.
[0012] Further, the top of one side of the fermentation tank body is provided with a feeding port, the bottom of one side of the fermentation tank body is provided with a discharging port, the inside of the feeding port and the discharging port is provided with a sealing valve, and the feeding port and the discharging port are arranged in an inclined manner.
[0013] Further, the top of one side of the fermentation tank body is provided with an exhaust pipe, and one end of the exhaust pipe is connected with a gas storage tank.
[0014] Further, the bottom of the fermentation tank body is provided with a supporting base, and a plurality of through holes are formed in the inside of the supporting base.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] The stirring assembly ensures that the microorganisms and the substrate can be fully contacted, the fermentation process is more efficient and stable, the uneven action of the microorganisms caused by the local accumulation or stratification of the materials is avoided, the incomplete fermentation or the low efficiency is reduced, the local overheating or overcooling of the materials can be effectively prevented through the uniform stirring, the relative stability of the fermentation environment temperature is maintained, the suitable survival and metabolism conditions are provided for the microbial community required by the anaerobic fermentation, and the smooth fermentation reaction is effectively promoted.
[0017] The exhaust pipe can timely discharge the gas generated in the fermentation, the pressure in the fermentation tank body is maintained stable, the pressure is prevented from being too high due to the gas accumulation, the structure of the fermentation tank and the survival environment of the microorganisms are prevented from being affected, the gas is collected to the gas storage tank, and the resource utilization of the gas is realized. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the whole structure schematic view of the utility model.
[0019] Figure 2 It is the inside structure schematic view of the fermentation tank of the utility model.
[0020] Figure 3 It is the inside structure plan view of the fermentation tank of the utility model.
[0021] Figure 4 It is the first stirring rod and second stirring rod connecting structure schematic view of the utility model.
[0022] Figure 5 It is the driving gear and driven gear bottom structure schematic view of the utility model.
[0023] The reference signs are explained as follows: 1, fermentation tank body; 2, feed inlet; 3, motor; 4, rotating shaft; 5, fixed ring; 6, cavity; 7, driving gear; 8, driven gear; 9, rotating rod; 10, first stirring rod; 11, fixed rod; 12, second stirring rod; 13, exhaust pipe; 14, gas storage tank; 15, discharge port; 16, sealing valve; 17, connecting frame; 18, support chassis; 19, through port. DETAILED DESCRIPTION
[0024] The technical scheme of the utility model is further explained below by means of the drawings and examples.
[0025] In combination Figures 1 to 5 , the embodiment provides a low-temperature anaerobic fermentation tank, which comprises a fermentation tank body 1, a cavity 6 is formed in one side of the inside of the fermentation tank body 1, and a stirring assembly is arranged in the inside of the fermentation tank body 1.
[0026] The stirring assembly comprises a first stirring rod 10 and a second stirring rod 12, a motor 3 is arranged at the top of the fermentation tank body 1, and the motor 3 is used for driving the first stirring rod 10 and the second stirring rod 12 to fully stir the material in the inside of the fermentation tank body 1.
[0027] Referring to Figures 1-5The output end of the fermentation tank body 1 is fixedly connected with a rotating shaft 4, the rotating shaft 4 extends through the fermentation tank body 1 to the inside of the cavity 6, the rotating shaft 4 is rotationally connected with the fermentation tank body 1 and the inside of the cavity 6, the outer wall of the rotating shaft 4 is provided with a fixed ring 5, the two sides of the fixed ring 5 are provided with connecting frames 17, the bottoms of the two connecting frames 17 are fixedly connected with fixed rods 11, the number of the second stirring rods 12 is two groups, each group of the second stirring rods 12 is fixedly installed on the outer wall of the corresponding fixed rod 11, the number of each group of the second stirring rods 12 is multiple, the outer wall of the cavity 6 is fixedly connected with a driving gear 7, the driving gear 7 is located in the inside of the cavity 6, a plurality of rotating rods 9 are rotationally connected in the inside of the cavity 6, the outer walls of the plurality of rotating rods 9 are fixedly connected with driven gears 8, the plurality of driven gears 8 are engaged with the driving gear 7, the plurality of rotating rods 9 extend through to the inside of the fermentation tank body 1, and the number of the first stirring rods 10 is multiple, each first stirring rod 10 is arranged on the outer wall of the corresponding rotating rod 9.
[0028] The material in the fermentation tank body 1 can be fully stirred by the stirring assembly. Specifically, first, the motor 3 drives the rotating shaft 4 to rotate. Since the fixed ring 5 is fixed on the rotating shaft 4, the connecting frames 17 on the two sides of the fixed ring 5 and the fixed rods 11 at the bottoms of the connecting frames 17 also rotate with the rotating shaft 4, so that the two groups of second stirring rods 12 fixed on the fixed rods 11 start to rotate and stir the material close to the inner side wall in the fermentation tank body 1. At the same time, the rotation of the rotating shaft 4 drives the driving gear 7 fixed on the outer wall of the rotating shaft 4 to rotate. Since the plurality of driven gears 8 are engaged with the driving gear 7, the rotation of the driving gear 7 drives the plurality of driven gears 8 to rotate synchronously, thereby driving the rotating rods 9 fixedly connected with the driven gears 8 to rotate, so that the plurality of first stirring rods 10 installed on the outer wall of the rotating rods 9 stir the material in other areas in the fermentation tank body 1. In this way, through the cooperation of the first stirring rods 10 and the second stirring rods 12, the material in the fermentation tank body 1 can be fully stirred in all directions, and the fermentation efficiency is improved.
[0029] The stirring assembly ensures that the microorganisms and the substrate are fully contacted, so that the fermentation process is more efficient and stable. The uneven action of microorganisms caused by local accumulation or stratification of the material is avoided, thereby reducing the incomplete fermentation or low efficiency. Through uniform stirring, the phenomenon of local overheating or overcooling of the material can be effectively prevented, the relative stability of the fermentation environment temperature is maintained, the suitable survival and metabolism conditions for the microbial community required by anaerobic fermentation are provided, and the smooth progress of the fermentation reaction is effectively promoted.
[0030] With reference to Figures 1-3 One side of the top of the fermentation tank body 1 is provided with a feeding port 2, one side of the bottom of the fermentation tank body 1 is provided with a discharging port 15, the inside of the feeding port 2 and the discharging port 15 is provided with a sealing valve 16, and the feeding port 2 and the discharging port 15 are inclined.
[0031] The inclination of the feed inlet 2 and the discharge outlet 15 of the fermentation tank body 1 facilitates the corn straw and cow dung and other materials to enter the tank smoothly by gravity, effectively prevents the materials from piling up and blocking at the inlet, and maintains the sealing of the fermentation tank body 1 during the feeding and discharging processes through the sealing valve 16, thereby ensuring the stability of the anaerobic fermentation environment, avoiding gas leakage and external air entering, and improving the fermentation quality and efficiency.
[0032] With reference to Figures 1-3 , the fermentation tank body 1 is connected with an exhaust pipe 13 at the top of one side, and the exhaust pipe 13 is connected with a gas storage tank 14 at one end.
[0033] The gas generated during fermentation can be discharged in time through the exhaust pipe 13, maintaining the stability of the pressure in the fermentation tank body 1, avoiding the accumulation of gas leading to excessive pressure affecting the structure of the fermentation tank and the survival environment of microorganisms, and realizing the resource utilization of the gas by collecting it into the gas storage tank 14.
[0034] With reference to Figures 1-3 , the fermentation tank body 1 is provided with a support base 18 at the bottom, and a plurality of through openings 19 are formed in the support base 18.
[0035] The support base 18 with a plurality of through openings 19 is arranged at the bottom of the fermentation tank body 1, which can enhance the stability of the fermentation tank as a whole, making the fermentation tank more stable, and the through openings 19 are helpful for air circulation, which can ventilate and ventilate the bottom of the fermentation tank body 1 to a certain extent, preventing the bottom from being too damp or breeding harmful microorganisms.
[0036] Working principle: first, the corn straw and cow dung and other materials are put into the fermentation tank body 1 through the feed inlet 2, and the inclination of the feed inlet 2 makes the materials enter smoothly by gravity, and the sealing valve 16 ensures the sealing of the fermentation tank during the feeding process, maintaining the anaerobic environment.
[0037] Then, start the motor 3, the motor 3 drives the rotating shaft 4 to rotate, so that the fixed ring 5 and the two groups of second stirring rods 12 connected thereto rotate to stir the materials close to the inner side wall; at the same time, the rotation of the rotating shaft 4 drives the driving gear 7 to drive the plurality of driven gears 8 to rotate, and then the rotating rod 9 and the first stirring rod 10 stir the materials in other areas of the fermentation tank, ensuring uniform mixing of the materials, sufficient contact between microorganisms and substrates, maintaining stable fermentation temperature, and promoting efficient and stable fermentation. The gas generated during fermentation is discharged in time through the exhaust pipe 13, maintaining the stability of the pressure in the tank, and the gas is collected into the gas storage tank 14 for resource utilization.
[0038] When the fermentation is completed, open the sealing valve 16 of the discharge outlet 15, and use its inclined design to make the fermented materials smoothly discharged under the action of gravity.
[0039] The above is only the preferred embodiment of the present application, and does not limit the technical scope of the present application in any way. Therefore, any slight modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belongs to the scope of the technical solution of the present application.
Claims
1. A low temperature anaerobic fermentation tank characterized by, Including fermentation tank body (1), the inside one side of fermentation tank body (1) is provided with cavity (6), the inside of fermentation tank body (1) is equipped with stirring assembly; The stirring assembly includes first stirring rod (10) and second stirring rod (12), the top of the fermentation tank body (1) is provided with motor (3), the motor (3) is used to drive first stirring rod (10) and second stirring rod (12) to the material in the inside of fermentation tank body (1) is fully stirred.
2. A low temperature anaerobic fermentation tank as claimed in claim 1, wherein, The output end of the fermentation tank body (1) is fixedly connected with the rotating shaft (4), the rotating shaft (4) extends through the fermentation tank body (1) to the inside of the cavity (6), the rotating shaft (4) is rotatably connected with the fermentation tank body (1) and the inside of the cavity (6), the outer wall of the rotating shaft (4) is provided with a fixed ring (5), the both sides of the fixed ring (5) are provided with a connecting frame (17).
3. A low temperature anaerobic fermentation tank as claimed in claim 2, wherein, The bottom of the two connecting frames (17) is fixedly connected with the fixed rod (11), the number of the second stirring rod (12) is two groups, and each group of the second stirring rod (12) is fixedly installed on the outer wall of the corresponding fixed rod (11), and the number of each group of the second stirring rod (12) is multiple.
4. A low temperature anaerobic fermentation tank as claimed in claim 3, wherein, The outer wall of the cavity (6) is fixedly connected with the driving gear (7), the driving gear (7) is located in the inside of the cavity (6), the inside of the cavity (6) is rotatably connected with a plurality of rotating rods (9), the outer wall of the plurality of rotating rods (9) is fixedly connected with a plurality of driven gears (8), the plurality of driven gears (8) is engaged with the driving gear (7), and the plurality of rotating rods (9) extends through to the inside of the fermentation tank body (1).
5. A low temperature anaerobic fermentation tank as claimed in claim 4, wherein, The number of the first stirring rod (10) is multiple, and each first stirring rod (10) is arranged on the outer wall of the corresponding rotating rod (9).
6. A low temperature anaerobic fermentation tank as defined in claim 1, wherein, The top of one side of the fermentation tank body (1) is provided with a feed inlet (2), and the bottom of one side of the fermentation tank body (1) is provided with a discharge port (15), the inside of the feed inlet (2) and the discharge port (15) is provided with a sealing valve (16), and the feed inlet (2) and the discharge port (15) are inclined.
7. A low temperature anaerobic fermentation tank as defined in claim 1, wherein, The top of one side of the fermentation tank body (1) is communicated with the exhaust pipe (13), one end of the exhaust pipe (13) is connected with the gas storage tank (14).
8. A low temperature anaerobic fermentation tank as defined in claim 1, wherein, The bottom of the fermentation tank body (1) is provided with a supporting base (18), and a plurality of through holes (19) are formed in the inside of the supporting base (18).