Rotational flow fermentation tank group
By using a reverse-rotating vertical mixer and communication port and overflow pipe structure in the biogas fermentation tank group, the problem of increasing costs and new materials affecting biogas production is solved, and efficient material flow and biogas production are achieved. Improved fertilizer quality.
Patent Information
- Application Number
- CN202420826486.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-22
AI Technical Summary
The existing biogas fermentation technology increases costs during multi-tank fermentation, and the drainage of new materials will lead to acidified and unfermented materials, affecting biogas production and fertilizer quality.
A cyclone fermentation tank group was designed, using a vertical mixer, a connecting port, an overflow tube and other structures. The material flow was promoted through a reverse rotating mixer, reducing the need for additional drainage equipment and avoiding the floating material from entering the rear. Fermentation tanks reduce construction and operation costs.
The material flow without additional drainage equipment is achieved, the new material affects biogas production and fertilizer quality is avoided, and construction and operation costs are reduced.
Smart Images
Figure CN222182248U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fermentation equipment, in particular to a cyclone fermentation tank group for producing biogas. Background Art
[0002] A biogas fermentation tank is a device that uses the metabolism of microorganisms to anaerobic ferment organic matter into combustible gas. The degraded products after fermentation can be used as fertilizer.
[0003] Existing biogas fermentation usually ferments the material to be fermented in a fermentation tank or a fermentation pool, and the newly added materials are mixed with the fermented materials. Once the material concentration exceeds 8%, the raw materials will be acidified and biogas production will fail; at the same time, 10-15% of new materials that do not produce biogas will be taken out when discharging, which not only reduces the amount of biogas production, but also causes the biogas residue to contain unfermented new materials, thus affecting the quality of organic fertilizer. In addition, when fermenting in multiple tanks, additional power is required to drain the materials to other fermentation tanks, or a height difference needs to be set to use gravity drainage. The use of additional power drainage will increase equipment, thereby increasing costs, and the use of height differences will increase construction costs. Utility Model Content
[0004] The utility model aims to provide a cyclone fermentation tank group to solve the technical problem of increased cost in the prior art when multiple tanks are used for fermentation.
[0005] In order to solve the above problems, the cyclone fermentation tank group involved in the utility model adopts the following technical scheme: a cyclone fermentation tank group, including a group of fermentation tanks, each fermentation tank in the fermentation tank group has a feed port, a discharge port and an air outlet, each air outlet is provided with an air duct, each fermentation tank in the fermentation tank group is arranged adjacent to each other in sequence, and a vertical mixer is arranged in pairs in the first fermentation tank at the front end, the two vertical mixers of a pair of vertical mixers rotate in opposite directions and the rotation direction is conducive to pushing the material to the fermentation tank adjacent to the first fermentation tank, the two adjacent fermentation tanks are provided with interconnected communication ports, and the first fermentation tank at the front end has a feeding port.
[0006] An overflow pipe is arranged on the communication port of the two adjacent fermenters, the lower end of the overflow pipe is located at the lower part of the front fermenter of the two fermenters, and the upper end of the overflow pipe is located at the upper part of the rear fermenter of the two fermenters.
[0007] The upper port of the overflow pipe is provided with a bending head bent downward.
[0008] The fermentation tank at the rear end is also provided with an overflow port.
[0009] An overflow pipe is arranged on the overflow port of the fermentation tank at the rear end, and the lower end of the overflow pipe is located inside the fermentation tank at the rear end.
[0010] The feed port is located at the upper part of the first fermentation tank.
[0011] Two adjacent fermentation tanks share a side wall.
[0012] Each fermentation tank is a square fermentation tank.
[0013] The volume of the first fermentation tank is 1.5 times the volume of the remaining fermentation tanks.
[0014] The communication port is opened on the side wall shared by two adjacent fermentation tanks.
[0015] The utility model provides a first fermentation tank with a pair of vertical mixers, wherein the two vertical mixers of a pair of vertical mixers rotate in opposite directions, and the pair of vertical mixers rotating in opposite directions generate a driving force for the material in the first fermentation tank, so that the material therein flows into the adjacent fermentation tank through the connecting port, without the need to set up additional drainage equipment, thereby reducing costs.
[0016] The lower port of the overflow pipe of the utility model is located at the lower part of the fermentation tank in the front of the two fermentation tanks, and the upper port of the overflow pipe is located at the upper part of the fermentation tank in the rear of the two fermentation tanks. The material located at the lower part of the fermentation tank does not contain floating objects and has a low concentration. The material flows into the upper part of the adjacent rear fermentation tank through the lower port of the overflow pipe. In this way, it is possible to avoid as much as possible that the new material floating on the upper part of the front fermentation tank flows into the rear fermentation tank, so the biogas residue discharged from the rear fermentation tank does not contain new materials, which will not affect the yield of biogas and the quality of the output fertilizer.
[0017] The upper port of the overflow pipe of the utility model is provided with a bending head bent downward, and the bending head can reduce the height of the upper port of the overflow pipe, thereby further preventing floating objects from entering the fermentation tank at the rear.
[0018] The fermentation tank at the rear end of the utility model is also provided with an overflow port, and the fermented biogas slurry flows out through the overflow port and can be used as liquid fertilizer.
[0019] The feeding port of the utility model is located at the upper part of the first fermentation tank. New material is added to the first fermentation tank from the feeding port. The new material added from the upper part floats on the upper part of the slurry in the first fermentation tank, so it is not easy to flow into the rear fermentation tank from the overflow pipe.
[0020] Two adjacent fermentation tanks of the utility model share a side wall, which reduces the distance between the connected fermentation tanks and also reduces the construction cost.
[0021] The communication port of the utility model is arranged on the side wall shared by two adjacent fermentation tanks, so that the length of the overflow pipe can be reduced, which not only facilitates the slurry to flow into the rear fermentation tank but also saves costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment:
[0023] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;
[0024] Figure 2 for Figure 1 The main view;
[0025] Figure 3 for Figure 1 A top view of
[0026] Figure 4 for Figure 3 AA section diagram in;
[0027] Figure 5 for Figure 1 A three-dimensional view of the mixing shaft of a stand mixer.
[0028] Markings in the figure: 1. first fermentation tank, 2. second fermentation tank, 3. third fermentation tank, 6. air outlet, 7. air guide pipe, 8. stirring shaft of vertical mixer, 9. connecting port, 10. feeding port, 11. overflow pipe, 12. overflow port. DETAILED DESCRIPTION
[0029] In order to make the technical purpose, technical solution and beneficial effects of the utility model clearer, the technical solution of the utility model is further described below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.
[0030] The specific embodiment of the cyclone fermentation tank group involved in the utility model is Figure 1 and Figure 5In the invention, a cyclone fermentation tank group is provided, which has a fermentation tank group consisting of three fermentation tanks, wherein the three fermentation tanks are respectively a first fermentation tank 1, a second fermentation tank 2 and a third fermentation tank 3, the first fermentation tank 1, the second fermentation tank 2 and the third fermentation tank 3 all have lids, which can be used as feed ports or discharge ports by opening the lids, each fermentation tank is provided with an air outlet 6, each air outlet 6 is provided with an air guide pipe 7, and the air guide pipe 7 is used to guide out biogas, the first fermentation tank 1, the second fermentation tank 2 and the third fermentation tank 3 are arranged adjacent to each other in sequence, three pairs of vertical mixers are arranged in pairs in the first fermentation tank 1 at the front end, and the stirring shaft 8 of the vertical mixer is located in the first fermentation tank 1. The two vertical mixers of each standing mixer rotate in opposite directions. Thus, each standing mixer provides directional thrust to the slurry formed by the material in the first fermentation tank 1 during rotation. Two adjacent fermentation tanks are provided with interconnected connecting ports 9, which are used to connect the slurries in the two adjacent fermentation tanks. The thrust generated by each standing mixer during reverse rotation pushes the slurry in the first fermentation tank 1 to flow from the connecting port 9 into the second fermentation tank 2, and the slurry in the second fermentation tank 2 also flows from the connecting port 9 into the third fermentation tank 3. The first fermentation tank 1 at the front end has a feeding port 10, which is used to add new materials for bacteria supplementation. The newly added raw materials will float above the slurry in the first fermentation tank 1 as floating objects before they are fully fermented.
[0031] When in use, the slurry to be fermented flows into the feed port of each fermentation tank, the vertical mixers are started to stir the slurry, and new materials are added to the first fermentation tank 1 from the feeding port 10; the thrust generated by the vertical mixers during the reverse rotation pushes the slurry in the first fermentation tank 1 to flow from the connecting port 9 into the second fermentation tank 2, and the slurry in the second fermentation tank 2 also flows from the connecting port 9 into the third fermentation tank 3. During this process, the floating objects formed by the incompletely fermented new materials are kept in the first fermentation tank 1 as much as possible; the fermentation progress in the first fermentation tank 1 is slow due to the influence of the new materials, so the amount of biogas produced is small, and there is no or almost no floating objects in the second fermentation tank 2 and the third fermentation tank 3. The fermentation process inside them is not affected, and the amount of biogas produced is normal. The small amount of biogas produced in the first fermentation tank 1 and the biogas produced in the second and third fermentation tanks are discharged through the air duct 7 and then collected or used. After fermentation is completed, waste is cleaned out from the outlet of each fermentation tank. Liquid waste can be used as liquid fertilizer or returned to the fermentation tank to increase bacterial strains, and solid waste can be used as solid fertilizer. Since the new material does not enter the second and third fermentation tanks, it will not affect the production of biogas or the quality of the output fertilizer.
[0032] Specifically, an overflow pipe 11 is provided on the connecting port 9 of two adjacent fermenters, the lower end of the overflow pipe 11 is located at the lower part of the fermenter in the front of the two fermenters, and the upper end of the overflow pipe 11 is located at the upper part of the fermenter in the rear of the two fermenters. The slurry in the lower part of the fermenter in the front can flow into the adjacent rear fermenter through the overflow pipe 11, so as to avoid floating objects in the fermenter in the front as much as possible, that is, to prevent new materials from flowing into the rear fermenter from the connecting port 9.
[0033] Specifically, the upper end of the overflow pipe 11 has a downwardly bent head. The downwardly bent head is lower than the highest point of the overflow pipe 11, which can prevent a small amount of floating fluid that flows into the overflow pipe together with the slurry from flowing into the rear fermentation tank.
[0034] Specifically, the third fermentation tank 3 at the rear end is also provided with an overflow port 12 .
[0035] Specifically, an overflow pipe 11 is provided on the overflow port 12 of the fermentation tank at the rear end, and the lower end of the overflow pipe 11 is located inside the fermentation tank at the rear end.
[0036] Specifically, the feed port 10 is located at the upper part of the first fermentation tank 1. In this way, the new material added from the feed port 10 is not easy to sink into the slurry in the first fermentation tank 1, but floats on the liquid surface.
[0037] Specifically, two adjacent fermentation tanks share a side wall.
[0038] Specifically, each fermentation tank is a square fermentation tank.
[0039] Specifically, the volume of the first fermentation tank 1 is 1.5 times the volume of the remaining fermentation tanks.
[0040] Specifically, the communication port 9 is provided on a side wall shared by two adjacent fermentation tanks.
[0041] In this embodiment, the fermentation tank is a fermentation tank, and in other embodiments, the fermentation tank can also be replaced by a fermentation tank.
[0042] The fermentation tank group in this embodiment consists of three fermentation tanks. In other embodiments, the fermentation tank group may also consist of four or five fermentation tanks.
[0043] In this embodiment, an overflow pipe is provided on the communication port of two adjacent fermentation tanks, but in other embodiments, no overflow pipe may be provided.
[0044] The upper port of the overflow pipe in this embodiment has a bending head that bends downward. In other embodiments, the upper port of the overflow pipe may not be provided with a bending head that bends downward.
[0045] In this embodiment, the fermentation tank at the rear end is also provided with an overflow port. In other embodiments, the fermentation tank at the rear end may not be provided with an overflow port, but liquid waste may be extracted from its discharge port.
[0046] In this embodiment, the feed port is located at the upper part of the first fermentation tank. In other embodiments, the feed port can also be located in the middle or lower part of the first fermentation tank. When the added new material floats above the slurry under its own action, the vertical mixer can be started for stirring.
[0047] In this embodiment, two adjacent fermentation tanks share a side wall. In other embodiments, two adjacent fermentation tanks may not share a side wall, but through holes are respectively opened on their side walls, and the two through holes are connected by a pipe.
[0048] In this embodiment, each fermentation tank is a square fermentation tank. In other embodiments, each fermentation tank may also be a round fermentation tank.
[0049] In this embodiment, the volume of the first fermentation tank is 1.5 times the volume of the remaining fermentation tanks. In other embodiments, the volume of the first fermentation tank may also be 2 times the volume of the remaining fermentation tanks.
[0050] The vertical mixer in the above embodiment is a mixer in the prior art.
[0051] Finally, it should be noted that the above embodiments are only used to illustrate but not to limit the technical solutions of the present invention, and any equivalent substitutions of the present invention and any modifications or partial substitutions that do not depart from the spirit and scope of the present invention shall be included in the scope of protection of the claims of the present invention.
Claims
1. A cyclone fermentation tank group, comprising a group of fermentation tanks, each fermentation tank in the fermentation tank group has a feed inlet, a discharge port and an air outlet, each air outlet is provided with an air guide pipe, characterized in that: The fermenters in the fermenter group are arranged adjacent to each other in sequence. Vertical mixers are arranged in pairs in the first fermenter at the front end. The two vertical mixers in a pair of vertical mixers rotate in opposite directions and the rotation direction is conducive to pushing the material to the fermenter adjacent to the first fermenter. The two adjacent fermenters are provided with interconnected communication ports, and the first fermenter at the front end has a feeding port.
2. The cyclone fermentation tank group according to claim 1, characterized in that: An overflow pipe is arranged on the communication port of the two adjacent fermenters, the lower end of the overflow pipe is located at the lower part of the front fermenter of the two fermenters, and the upper end of the overflow pipe is located at the upper part of the rear fermenter of the two fermenters.
3. The cyclone fermentation tank group according to claim 2, characterized in that: The upper port of the overflow pipe is provided with a bending head bent downward.
4. The cyclone fermentation tank group according to claim 3, characterized in that: The fermentation tank at the rear end is also provided with an overflow port.
5. The cyclone fermentation tank group according to claim 4, characterized in that: An overflow pipe is arranged on the overflow port of the fermentation tank at the rear end, and the lower end of the overflow pipe is located inside the fermentation tank at the rear end.
6. The cyclone fermentation tank group according to claim 5, characterized in that: The feed port is located at the upper part of the first fermentation tank.
7. The cyclone fermentation tank group according to claim 6, characterized in that: Two adjacent fermentation tanks share a side wall.
8. The cyclone fermentation tank group according to claim 6, characterized in that: Each fermentation tank is a square fermentation tank.
9. The cyclone fermentation tank group according to claim 8, characterized in that: The volume of the first fermentation tank is 1.5 times the volume of the remaining fermentation tanks.
10. The cyclone fermentation tank group according to any one of claims 1 to 9, characterized in that: The communication port is opened on the side wall shared by two adjacent fermentation tanks.