Fermentation precipitation device

Abstract

The utility model discloses a fermentation precipitation device which comprises a separation mechanism, a fermentation mechanism, a sediment backflow mechanism, a biogas slurry backflow mechanism, a biogas collection mechanism and a fertilizer collection mechanism, a screen is arranged in the separation mechanism and divides the separation mechanism into a filtering area and a screening area, the front end of the fermentation mechanism is connected with the screening area, and the back end of the fermentation mechanism is connected with the fertilizer collection mechanism. The sediment backflow mechanism is connected between the bottom end of the fermentation mechanism and the filtering area, the biogas slurry backflow mechanism is connected between the fermentation mechanism and the filtering area, the biogas collection mechanism is connected with the top end of the fermentation mechanism, and the fertilizer collection mechanism is connected with the tail end of the fermentation mechanism. According to the utility model, the biogas slurry and the sediment can be circularly filtered and separated through the filtering area and then enter the fermentation mechanism to be circularly fermented, so that the fermentation efficiency is improved, the biogas slurry and the sediment can be better recycled, and the waste of resources is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fermentation equipment technology, specifically to a fermentation sedimentation device. Background Technology

[0002] Biogas is a combustible gas produced by the fermentation of organic matter in an anaerobic environment under specific temperature, humidity, and pH conditions through microbial processes. Existing waste fermentation devices continuously generate separate biogas slurry and sediment during the fermentation process. Over time, these slurry and sediment accumulate, severely impacting fermentation efficiency. Furthermore, since the biogas slurry and sediment still possess fermentation value, they are not effectively recycled, resulting in resource waste. Utility Model Content

[0003] The present invention aims to provide a fermentation and sedimentation device to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a fermentation sedimentation device, comprising a separation mechanism, a fermentation mechanism, a sludge reflux mechanism, a biogas reflux mechanism, a biogas collection mechanism, and a fertilizer collection mechanism. The separation mechanism is equipped with a screen, which divides the separation mechanism into a filtration zone and a screening zone. The front end of the fermentation mechanism is connected to the screening zone. The sludge reflux mechanism is connected between the bottom end of the fermentation mechanism and the filtration zone. The biogas reflux mechanism is connected between the fermentation mechanism and the filtration zone. The biogas collection mechanism is connected to the top end of the fermentation mechanism. The fertilizer collection mechanism is connected to the end end of the fermentation mechanism.

[0005] Preferably, the separation mechanism is a cylindrical separation tank with an open top, and the screen is installed at an angle inside the separation tank.

[0006] Preferably, the screen is connected to a driving component for driving the screen to vibrate back and forth.

[0007] Preferably, the fermentation mechanism includes multiple fermentation tanks connected in sequence, with the feed inlet of the first fermentation tank connected to the screening area and the fertilizer collection mechanism connected to the end of the last fermentation tank.

[0008] Preferably, it also includes a first channel, through which two adjacent fermenters are connected, and a first valve is installed on the first channel.

[0009] Preferably, the front end of the first channel is higher than the rear end, and the front end of the first channel is connected to the upper rear side of the front fermenter, while the rear end of the first channel is connected to the lower front side of the rear fermenter.

[0010] Preferably, the biogas collection mechanism includes a biogas channel located above the fermentation mechanism, and a vacuum pump and a biogas collection tank installed on the biogas channel, with the top of each fermentation tank connected to the biogas channel.

[0011] Preferably, the biogas slurry return mechanism includes a biogas slurry return channel and a first booster pump installed on the biogas slurry return channel, with the first end of the biogas slurry return channel connected to the end of the last fermentation tank.

[0012] Preferably, the sludge reflux mechanism includes a sludge reflux channel located below the fermentation mechanism and a second booster pump installed on the sludge reflux channel. The bottom of the filtration zone and each fermentation tank are respectively connected to the sludge reflux channel, and a sediment collection tank is connected below the filtration zone.

[0013] This utility model has the following beneficial effects:

[0014] This invention allows waste to be filtered and separated in a separation mechanism. Small particles of waste (mostly organic waste) enter the screening zone, while large particles (mostly inorganic waste) remain in the filtration zone. The waste then enters the fermentation mechanism for fermentation. The biogas produced during fermentation is collected by a biogas collection mechanism, and the fertilizer produced is collected by a fertilizer collection mechanism. The biogas slurry produced during fermentation is returned to the filtration zone of the separation mechanism via a biogas slurry return mechanism, and the sediment produced during fermentation is returned to the filtration zone of the separation mechanism via a sediment return mechanism. This allows the biogas slurry and sediment to be circulated and separated in the filtration zone before entering the fermentation mechanism for cyclical fermentation, thereby improving fermentation efficiency and enabling better reuse of the biogas slurry and sediment, avoiding resource waste. Attached Figure Description

[0015] Figure 1 This is a perspective view of an embodiment of the present invention.

[0016] Figure 2 This is a front view of an embodiment of the present invention.

[0017] Figure 3 This is a top view of an embodiment of the present invention.

[0018] Figure 4 yes Figure 3 Sectional view at point AA.

[0019] Attached diagram labels: 1 Separation mechanism, 1.1 Filtration zone, 1.2 Screening zone, 2 Fermentation mechanism, 2.1 Fermentation tank, 3 Sediment return mechanism, 3.1 Sediment return channel, 3.2 Second booster pump, 4 Biogas slurry return mechanism, 4.1 Biogas slurry return channel, 4.2 First booster pump, 5 Biogas collection mechanism, 5.1 Biogas channel, 5.2 Air pump, 5.3 Biogas collection tank, 6 Fertilizer collection mechanism, 7 Screen, 8 Drive component, 9 First channel, 10 Second channel, 11 Third channel, 12 First valve, 13 Second valve, 14 Third valve, 15 Sediment collection tank. Detailed Implementation

[0020] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] See Figure 1-4As shown in the figure, as an embodiment of the present invention, a fermentation sedimentation device is provided, including a separation mechanism 1, a fermentation mechanism 2, a sludge reflux mechanism 3, a biogas slurry reflux mechanism 4, a biogas collection mechanism 5, and a fertilizer collection mechanism 6. The separation mechanism 1 is provided with a screen 7 inside, which divides the separation mechanism 1 into a filtration zone 1.1 and a screening zone 1.2. The front end of the fermentation mechanism 2 is connected to the screening zone 1.2. The sludge reflux mechanism 3 is connected between the bottom end of the fermentation mechanism 2 and the filtration zone 1.1. The biogas slurry reflux mechanism 4 is connected between the fermentation mechanism 2 and the filtration zone 1.1. The biogas collection mechanism 5 is connected to the top end of the fermentation mechanism 2, and the fertilizer collection mechanism 6 is connected to the end end of the fermentation mechanism 2. After the waste enters the separation unit 1 for filtration and separation, small particles of waste (mostly organic waste) enter the screening zone 1.2, while large particles of waste (mostly inorganic waste) remain in the filtration zone 1.1. Then, they enter the fermentation unit 2 for fermentation. The biogas produced by fermentation is collected through the biogas collection unit 5, and the fertilizer produced by fermentation is collected through the fertilizer collection unit 6. The biogas slurry produced by fermentation is returned to the filtration zone 1.1 of the separation unit 1 through the biogas slurry return unit 4, and the sediment produced by fermentation is returned to the filtration zone 1.1 of the separation unit 1 through the sediment return unit 3. This allows the biogas slurry and sediment to be circulated, filtered, and separated before entering the fermentation unit 2 for cyclical fermentation, thereby improving fermentation efficiency and enabling better reuse of biogas slurry and sediment, avoiding resource waste.

[0024] In this embodiment, the separation mechanism 1 is a cylindrical separation tank with an open top. The screen 7 is installed at an angle inside the separation tank, which makes the filtration surface of the screen 7 larger and the filtration effect and filtration efficiency better.

[0025] In this embodiment, the screen 7 is connected to a drive component 8, which is a motor used to drive the screen 7 to vibrate back and forth, thereby improving the filtration efficiency.

[0026] In this embodiment, the fermentation mechanism 2 includes multiple fermentation tanks 2.1 connected sequentially via a first channel 9. The feed inlet of the first fermentation tank 2.1 is connected to the screening area 1.2, and the fertilizer collection mechanism 6 is connected to the end of the last fermentation tank 2.1. Adjacent fermentation tanks 2.1 are connected via the first channel 9, and a first valve 12 is installed on the first channel 9. The front end of the first channel 9 is higher than the rear end, and the front end of the first channel 9 is connected to the upper rear side of the preceding fermentation tank 2.1, while the rear end of the first channel 9 is connected to the lower front side of the following fermentation tank 2.1. This arrangement results in less biogas residue being formed in the later fermentation tanks 2.1, leading to higher fermentation efficiency.

[0027] In this embodiment, the biogas collection mechanism 5 includes a biogas channel 5.1 located above the fermentation mechanism 2, an air pump 5.2 installed on the biogas channel 5.1, and a biogas collection tank 5.3. The top of each fermentation tank 2.1 is connected to the biogas channel 5.1 through a second channel 10. A second valve 13 is installed on the second channel 10. The air pump 5.2 draws the biogas in the fermentation tank 2.1 into the biogas collection tank 5.3 for collection.

[0028] In this embodiment, the biogas slurry return mechanism 4 includes a biogas slurry return channel 4.1 and a first booster pump 4.2 installed on the biogas slurry return channel 4.1. The first end of the biogas slurry return channel 4.1 is connected to the end of the last fermentation tank 2.1. Under the action of the first booster pump 4.2, the biogas slurry of the fermentation tank 2.1 is returned to the filtration zone 1.1 through the biogas slurry return channel 4.1 for recycling.

[0029] In this embodiment, the sludge return mechanism 3 includes a sludge return channel 3.1 located below the fermentation mechanism 2 and a second booster pump 3.2 installed on the sludge return channel 3.1. The bottom ends of the filtration zone 1.1 and each fermentation tank 2.1 are respectively connected to the sludge return channel 3.1. The bottom end of each fermentation tank 2.1 is connected to the sludge return channel 3.1 through a third channel 11. A third valve 14 is installed on the third channel 11 to achieve independent discharge control of the biogas residue of each fermentation tank 2.1. Under the action of the second booster pump 3.2, the biogas residue of the fermentation tank 2.1 is returned to the filtration zone 1.1 through the sludge return channel 3.1 for recycling. A sediment collection tank 15 is connected below the filtration zone 1.1 to collect large-particle hard inorganic sediments, which can be used as raw materials for building materials.

[0030] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A fermentation and sedimentation apparatus, characterized in that: It includes a separation mechanism, a fermentation mechanism, a sediment recirculation mechanism, a biogas recirculation mechanism, a biogas collection mechanism, and a fertilizer collection mechanism. The separation mechanism is equipped with a screen that divides the separation mechanism into a filtration zone and a screening zone. The front end of the fermentation mechanism is connected to the screening zone. The sediment recirculation mechanism is connected between the bottom end of the fermentation mechanism and the filtration zone. The biogas recirculation mechanism is connected between the fermentation mechanism and the filtration zone. The biogas collection mechanism is connected to the top end of the fermentation mechanism. The fertilizer collection mechanism is connected to the end end of the fermentation mechanism.

2. The fermentation and sedimentation apparatus according to claim 1, characterized in that: The separation mechanism is a cylindrical separation tank with an open top, and the screen is installed at an angle inside the separation tank.

3. The fermentation and sedimentation apparatus according to claim 1, characterized in that: The screen is connected to a drive unit, which is used to drive the screen to vibrate back and forth.

4. The fermentation and sedimentation apparatus according to claim 1, characterized in that: The fermentation mechanism includes multiple fermentation tanks connected in sequence. The feed inlet of the first fermentation tank is connected to the screening area, and the fertilizer collection mechanism is connected to the end of the last fermentation tank.

5. The fermentation and sedimentation apparatus according to claim 4, characterized in that: It also includes a first channel, through which two adjacent fermenters are connected, and a first valve is installed on the first channel.

6. The fermentation and sedimentation apparatus according to claim 5, characterized in that: The front end of the first channel is higher than the rear end, and the front end of the first channel is connected to the upper rear side of the fermentation tank in front, while the rear end of the first channel is connected to the lower front side of the fermentation tank behind.

7. The fermentation and sedimentation apparatus according to claim 4, characterized in that: The biogas collection system includes a biogas channel located above the fermentation unit, as well as a vacuum pump and a biogas collection tank installed on the biogas channel. The top of each fermentation tank is connected to the biogas channel.

8. The fermentation and sedimentation apparatus according to claim 4, characterized in that: The biogas slurry return mechanism includes a biogas slurry return channel and a first booster pump installed on the biogas slurry return channel. The first end of the biogas slurry return channel is connected to the end of the last fermentation tank.

9. The fermentation and sedimentation apparatus according to claim 4, characterized in that: The sludge return mechanism includes a sludge return channel located below the fermentation unit and a second booster pump installed on the sludge return channel. The bottom of the filtration zone and each fermentation tank are connected to the sludge return channel, and a sediment collection tank is connected below the filtration zone.

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