Fermentation equipment

Abstract

The embodiment of the utility model provides fermentation equipment, which comprises a fermentation box, an inner cavity of the fermentation box is provided with a filtering device, and the filtering device is used for filtering a water body entering the fermentation box; the liquid inlet device comprises a liquid inlet pipeline, and the liquid inlet pipeline is located at the top of the fermentation box and is opposite to the filtering device; the liquid discharging device comprises a liquid discharging pipeline, and the liquid discharging pipeline is connected with the bottom of the fermentation box and used for discharging filtered water; the blowdown device is connected with the bottom of the filtering device and is used for discharging the fermented water body and filter residues of the filtering device; and the control device is respectively connected with the filtering device, the liquid inlet device, the liquid discharging device and the sewage discharging device. By means of the arrangement, large particles such as fish manure can be filtered and fermented, the large particles are decomposed into nutrient substances capable of being absorbed by plants, generation of harmful substances in the decomposition and absorption process is reduced, and meanwhile the utilization rate of the large particles such as the fish manure as fertilizer is increased.

Description

Technical Field

[0001] The present application relates to the technical field of aquaponics, and in particular, to a fermentation device. Background Art

[0002] With the popularization of agricultural Internet of Things technology and the combination of pure organic farming and planting at this stage, more and more capital is pouring into the field of indoor planting and breeding with relatively high food safety, such as fish-vegetable symbiosis. Fish-vegetable symbiosis is a new type of compound farming system. It combines aquaculture and vegetable production, two originally completely different farming technologies, through ingenious ecological design to achieve scientific synergy and symbiosis, thereby achieving the ecological symbiosis effect of raising fish without changing water and worrying about water quality, and growing vegetables without fertilizing and growing normally. Achieving a harmonious ecological balance between animals, plants, and microorganisms is a sustainable, circular, zero-emission, low-carbon production model in the future, and it is also the most effective way to effectively solve the agricultural ecological crisis.

[0003] In the existing fish-vegetable symbiotic system, the sewage containing fish feces and leftover bait discharged from the aquaculture unit generally flows into the soilless cultivation planting bed. The planting bed adopts a matrix or hydroponic form, and mainly relies on microorganisms to decompose fish feces and leftover bait. If the particles such as fish feces cannot be decomposed by microorganisms in time, they are easy to rot and breed bacteria and produce harmful gases, which will affect the metabolism and reproduction of microorganisms. The plants cannot obtain sufficient nutrients, resulting in nutrient deficiency and reduced production, and the water body cannot be well purified, which harms the growth of fish. Utility Model Content

[0004] A fermentation device is provided in an embodiment of the present application to solve the problem that in the existing fish-vegetable symbiotic system, the sewage discharged from the aquaculture unit directly flows into the cultivation bed, cannot be fully decomposed by microorganisms, the plants cannot absorb sufficient nutrients, the water body cannot be effectively purified, and harmful substances are easily produced.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A fermentation device, comprising:

[0007] A fermentation box, wherein the inner cavity of the fermentation box is provided with a filtering device for filtering water entering the fermentation box;

[0008] A liquid inlet device, comprising a liquid inlet pipeline, wherein the liquid inlet pipeline is located at the top of the fermentation box and is arranged opposite to the filtering device;

[0009] A drainage device, comprising a drainage pipeline, wherein the drainage pipeline is connected to the bottom of the fermentation box and is used to discharge the water filtered by the filtering device;

[0010] A sewage discharge device connected to the bottom of the filter device and used to discharge the water and filter residue of the filter device after fermentation;

[0011] A control device is connected to the liquid inlet device, the liquid discharge device and the sewage discharge device respectively.

[0012] Optionally, it also includes:

[0013] An internal circulation device, one end of which is connected to the fermentation box, and the other end of which is connected to the filter cavity of the filter device, is used to transport the liquid filtered in the fermentation box to the filter cavity of the filter device for internal circulation.

[0014] Optionally, the liquid discharge device further comprises:

[0015] A drainage pumping assembly is located in the fermentation box, the drainage pumping assembly is connected to the drainage pipeline, and is used to pump the water filtered by the filtering device;

[0016] The discharge control valve is located on the discharge pipeline and controls the on-off of the discharge pipeline. The discharge pumping assembly and the discharge control valve are respectively connected to the control device.

[0017] Optionally, the internal circulation device comprises an internal circulation pipeline, one end of which is connected to the discharge pipeline via the discharge control valve;

[0018] The control device controls the drain control valve to switch direction and open the internal circulation pipeline, and the liquid at the bottom of the fermentation box enters the filtering device through the drain pumping assembly, part of the drain pipeline and the internal circulation pipeline for internal circulation.

[0019] Optionally, the liquid discharge device further comprises:

[0020] A second liquid level detection component, located at a second preset liquid level at the bottom of the fermentation box, for detecting the liquid level of the water in the fermentation box after being filtered by the filtering device;

[0021] The control device is connected to the second liquid level detection component, and when the liquid level of the fermentation box is higher than the second preset liquid level, the control device controls the discharge control valve to operate and open the discharge pipeline.

[0022] Optionally, the liquid inlet device further includes:

[0023] A liquid inlet control valve, located on the liquid inlet pipeline, used to control the on-off of the liquid inlet pipeline;

[0024] A first liquid level detection component, located in the filter cavity of the filter device, and used to detect the liquid level of the filter cavity of the filter device;

[0025] The control device is connected to the liquid inlet control valve and the first liquid level detection component respectively. When the liquid level in the filter chamber of the filter device is higher than a first preset liquid level, the control device controls the liquid inlet control valve to operate and disconnect the liquid inlet pipeline.

[0026] Optionally, an external circulation device is further included, connected to the control device, and the external circulation device includes:

[0027] An external circulation pipeline is located in the inner cavity of the fermentation box and is arranged along the circumferential outer wall of the filtering device;

[0028] A plurality of external circulation sprinklers are located on the external circulation pipeline and are arranged toward the outer wall of the filtering device.

[0029] Optionally, the sewage discharge device comprises:

[0030] A sewage discharge pipeline, one end of which is connected to the bottom of the filter device;

[0031] A sewage pumping assembly is located on the sewage pipeline and is connected to the control device.

[0032] Optionally, it also includes:

[0033] A heating device is located in the inner cavity of the fermentation box and is used to adjust the temperature of the inner cavity of the fermentation box; the heating device is connected to the control device.

[0034] Optionally, the filtering device is a conical funnel-shaped filter.

[0035] A fermentation device provided in an embodiment of the present application includes: a fermentation box, the inner cavity of the fermentation box is provided with a filtering device for filtering water entering the fermentation box; a liquid inlet device, including a liquid inlet pipeline, the liquid inlet pipeline is located at the top of the fermentation box and is arranged opposite to the filtering device; a liquid discharge device, including a liquid discharge pipeline, the liquid discharge pipeline is connected to the bottom of the fermentation box, and is used to discharge the filtered water; a sewage discharge device, connected to the bottom of the filtering device, and is used to discharge the water and filter residue of the filtering device after fermentation; a control device, which is respectively connected to the liquid inlet device, the liquid discharge device and the sewage discharge device.

[0036] Compared with the prior art, the fermentation equipment provided in the embodiment of the present application has the following technical effects:

[0037] The fermentation equipment provided by the present application has a filter device arranged in the fermentation box, and the water entering the fermentation box is filtered by the filter device, and the relatively clear water flows into the bottom of the fermentation box through the filter device and is discharged through the drainage device; large particles such as fish feces are fermented in the fermentation box, and after the fermentation is completed, the filter residue and water can be discharged through the sewage discharge device. Thus, it is configured to filter and ferment large particles such as fish feces, decompose them into nutrients that can be decomposed and absorbed by plants, reduce the generation of harmful substances in the decomposition and absorption process, and at the same time improve the utilization rate of large particles such as fish feces as fertilizers. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0039] Figure 1 A schematic diagram of the structure of a fermentation device provided in an embodiment of the present application;

[0040] Figure 2 A schematic cross-sectional structure diagram of a fermentation device provided in an embodiment of the present application.

[0041] The following are marked in the accompanying drawings:

[0042] Fermentation equipment 300;

[0043] Fermentation box 310, filtering device 320, liquid inlet device 330, liquid discharge device 340, sewage discharge device 350, internal circulation device 360, external circulation device 370, heating device 380;

[0044] A liquid inlet pipeline 331, a liquid inlet control valve 332, and a first liquid level detection component 333;

[0045] A discharge pumping assembly 341, a discharge control valve 342, a second liquid level detection assembly 343, and a discharge pipeline 345;

[0046] Sewage pipeline 351, sewage pumping assembly 352;

[0047] Internal circulation pipeline 361;

[0048] External circulation pipeline 371 and external circulation sprinkler 372. DETAILED DESCRIPTION

[0049] The utility model discloses a fermentation device to solve the problem that sewage discharged from an aquaculture unit in an existing fish-vegetable symbiotic system directly flows into a cultivation bed, cannot be decomposed and absorbed by fish and vegetables, and easily produces harmful substances.

[0050] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0051] See also Figure 1-2 , Figure 1 A schematic diagram of the structure of a fermentation device provided in an embodiment of the present application; Figure 2 A schematic cross-sectional structure diagram of a fermentation device provided in an embodiment of the present application.

[0052] In a specific embodiment, the fermentation equipment 300 provided in the present application includes a fermentation box 310, a liquid inlet device 330, a liquid discharge device 340, a sewage discharge device 350 and a control device; wherein the fermentation box 310 is preferably a rectangular structure, which has a hollow inner cavity, and the inner cavity is provided with a filter device 320, and the filter device 320 is preferably a conical funnel-shaped filter screen, and in other embodiments it can also be set to a truncated cone-shaped filter screen, and the specific structure of the filter screen can be set as needed; the circumferential edge of the filter screen is fixed to the top edge of the fermentation box 310, and the filter device 320 divides the fermentation box 310 into two parts from top to bottom, a filter cavity formed by the filter screen and a liquid storage cavity formed by the outer wall of the filter screen and the inner wall of the fermentation box 310. The liquid inlet device 330 includes a liquid inlet pipeline 331, which is located at the top of the fermentation box 310 and is arranged opposite to the filter device 320, so that the water entering the fermentation box 310 is first filtered by the filter device 320, and the filtered water flows downward to the bottom of the fermentation box 310, that is, the liquid storage chamber. The liquid discharge pipeline 345 of the liquid discharge device 340 is connected to the bottom of the fermentation box 310, and is used to discharge the relatively clear water in the liquid storage chamber. Since it contains less particulate matter such as fish feces, it does not need additional fermentation and can be directly supplied to the ecological planting bed.

[0053] Large particles such as fish feces are retained in the filter chamber of the filter device 320 for fermentation. When the ambient temperature is suitable, such as 25°C-40°C, fermentation can be carried out directly under natural conditions. When the ambient temperature does not meet the temperature required for fermentation, the fermentation box 310 can be heated by setting a heating device 380 to meet the fermentation temperature.

[0054] In this embodiment, a heating device 380 is provided in the inner cavity of the fermentation box 310 for adjusting the temperature of the inner cavity of the fermentation box 310. The heating device 380 can be provided close to the bottom of the filtering device 320 to better adjust the temperature of the filter residue. The heating device 380 is connected to the control device for automatic control. The heating device 380 can be set as a heating element such as a resistance wire, and a specific structural setting can be performed as needed, which will not be repeated here.

[0055] A sewage discharge device 350 is connected to the bottom of the filter device 320. After the fermentation is completed, the water and filter residue in the filter device 320 after fermentation are discharged through the sewage discharge device 350 and enter the next-level processing unit for processing.

[0056] The control device is connected to the liquid inlet device 330, the liquid discharge device 340 and the sewage discharge device 350 respectively, so as to automatically control the fermentation equipment 300 and improve the automation degree of the equipment.

[0057] Compared with the prior art, the fermentation equipment 300 provided in the embodiment of the present application has the following technical effects:

[0058] The fermentation equipment 300 provided by the present application has a filter device 320 arranged in the fermentation box 310. The filter device 320 filters the water entering the fermentation box 310. The relatively clear water flows into the bottom of the fermentation box 310 through the filter device 320 and is discharged through the drainage device 340. Large particles such as fish feces are fermented in the filter device 320. After the fermentation is completed, the fermentation residue liquid can be washed through the external circulation device 370. The relatively clear sewage rich in nutrients flows into the bottom liquid storage cavity of the fermentation box 310 through the filter device 320 and is discharged by the drainage device 340 to provide nutrients for the plants of the lower unit. The fermentation residue can be discharged through the sewage discharge device 350. Thus, large particles such as fish feces can be filtered and fermented, decomposed into nutrients that can be absorbed by plants, reduce the generation of harmful substances in the decomposition and absorption process, and improve the utilization rate of large particles such as fish feces as fertilizers.

[0059] In order to further improve the fermentation effect of the filter residue on the filter device 320, it also includes:

[0060] The internal circulation device 360 ​​has one end connected to the liquid storage chamber of the fermentation box 310, and the other end connected to the filter chamber of the filter device 320, and is used to lift the filtered liquid in the fermentation box 310 to the filter chamber of the filter device 320 for internal circulation; thereby preventing the filter residue in the filter chamber from being insufficiently moist or adhering to the filter device 320 due to long-term dehydration, and also allowing the fermentation bacteria to be evenly distributed on the fecal residue and play a role in stirring the water body. The water body at the bottom of the fermentation box 310 is lifted and transported to the filter chamber of the filter device 320 through the internal circulation device 360 ​​to ensure that the humidity of the filter chamber meets the fermentation conditions, and at the same time prevent the filter residue from adhering to the filter net, so that the filter residue and the water body are fully in contact and the fermentation bacteria agent and the filter residue are evenly mixed, thereby further improving the fermentation effect.

[0061] In one embodiment, the liquid inlet device 330 further includes:

[0062] The liquid inlet control valve 332 is located on the liquid inlet pipeline 331 and is used to control the on-off of the liquid inlet pipeline 331;

[0063] A first liquid level detection component 333 is located in the filter cavity of the filter device 320 and is used to detect the liquid level of the filter cavity of the filter device 320;

[0064] The control device is connected to the liquid inlet control valve 332 and the first liquid level detection assembly 333 respectively. When the liquid level in the filter chamber of the filter device 320 is higher than the first preset liquid level, the control device controls the liquid inlet control valve 332 to operate and disconnect the liquid inlet pipeline 331.

[0065] The liquid inlet pipeline 331 is located outside the fermentation box 310, the liquid inlet control valve 332 is preferably a solenoid valve, and the first liquid level detection component 333 is a liquid level sensor, which is preferably fixed at the first preset liquid level of the filter device 320. The two are detachably fixedly connected for easy disassembly and assembly; the first preset liquid level is monitored by setting a liquid level sensor or a liquid level meter, and the water body in the fermentation box is circulated by starting the internal circulation device 360, thereby better replenishing water to the filter residue in the filter cavity to meet the humidity requirements required for fermentation and improve the fermentation effect; at the same time, it is prevented that the filter residue stays in the filter device 320 for too long and causes adhesion and other problems; fermentation bacteria can also be added in the fermentation box or the filter cavity, and the fermentation bacteria are evenly dispersed through internal circulation to promote fermentation. In other embodiments, when the fermentation equipment 300 is two sets, when the liquid level of the filter cavity of the filter device 320 of one set is higher than the first preset liquid level, the liquid inlet control valve 332 is reversed, and the water body flows into the filter cavity of the other set of the filter device 320. Specifically, the liquid inlet pipeline 331 includes a liquid inlet main pipe and a liquid inlet branch pipe, which is arranged in a T shape. The two liquid inlet branches are respectively connected to the fermentation box 310. The liquid inlet control valve 332 is arranged at the intersection of the T-shaped structure to achieve water reversal.

[0066] In another embodiment, the drainage device 340 further includes a drainage pumping assembly 341 and a drainage control valve 342; wherein the drainage pumping assembly 341 is located in the fermentation box 310, and the drainage pumping assembly 341 is connected to the drainage pipeline 345, and is used to pump the water filtered by the filtering device 320;

[0067] The discharge control valve 342 is located on the discharge pipeline 345 to control the on-off of the discharge pipeline 345. The discharge pumping assembly 341 and the discharge control valve 342 are respectively connected to the control device.

[0068] The drainage pumping assembly 341 is located on the bottom wall of the fermentation box 310, and part of the drainage pipeline 345 is arranged inside the fermentation box 310, and part of it is arranged outside the fermentation box 310. The drainage pumping assembly 341 pumps out the water in the fermentation box 310 after being filtered by the filtering device 320, and transports it to the next-level processing unit.

[0069] Specifically, the liquid discharge device 340 further includes a second liquid level detection component 343, which is located at a second preset liquid level at the bottom of the fermentation box 310 and is used to detect the liquid level of the water in the fermentation box 310 after being filtered by the filtering device 320;

[0070] The control device is connected to the second liquid level detection assembly 343 , and when the liquid level of the fermentation box 310 is higher than the second preset liquid level, the drain control valve 342 is controlled to operate and the drain pipeline 345 is opened.

[0071] When the liquid level of the water in the fermentation box 310 after being filtered by the filter device 320 is higher than the second preset liquid level, the drainage pipeline 345 is opened for drainage, and the drainage control valve 342 is closed after the preset drainage time, so that a certain amount of water is left in the fermentation box 310 to realize the above-mentioned internal circulation operation process. Specifically, a third liquid level detection component is set at the third preset liquid level to detect whether the inner cavity liquid level of the fermentation box 310 reaches the third preset liquid level. If so, the drainage control valve 342 is controlled to operate and the drainage pipeline 345 is closed; it can be understood that the third preset liquid level is lower than the second preset liquid level setting, that is, the third liquid level detection component is lower than the second liquid level detection component 343 setting.

[0072] In a specific embodiment, the internal circulation device 360 ​​includes an internal circulation pipeline 361 and an internal circulation pumping component, one end of the internal circulation pumping component is connected to the fermentation box 310, and the other end is connected to the filter cavity of the filter device 320, so as to realize the process of transporting the filtered liquid in the fermentation box 310 to the filter cavity of the filter device 320 for internal circulation operation; and in order to simplify the device structure, the drainage pumping component 341 can be reused as an internal circulation pumping component, specifically, one end of the internal circulation pipeline 361 is connected to the drainage pipeline 345 through the drainage control valve 342; the control device controls the drainage control valve 342 to reverse and open the internal circulation pipeline 361, and the liquid at the bottom of the fermentation box 310 enters the filter device 320 for internal circulation through the drainage pumping component 341, part of the drainage pipeline 345 and the internal circulation pipeline 361, thereby simplifying the device structure, setting a pump body to realize drainage and internal circulation operations, and reducing operating costs. It can be understood that the internal circulation pipeline 361 is arranged outside the fermentation box 310 to simplify the internal structure of the fermentation box 310, while preventing liquid splashing or microorganisms from attaching to the pipeline and corroding the pipeline, thereby increasing the service life of the device.

[0073] Furthermore, after the internal circulation operation is completed, it is necessary to obtain the nutrients produced by the fermentation and discharge the fermented filter residue and water. In order to facilitate the better separation of the filter residue from the filter net, the above-mentioned equipment also includes an external circulation device 370, which is connected to the control device, including an external circulation pipeline 371 and a plurality of external circulation sprinklers 372; one end of the external circulation pipeline 371 is connected to the water source, and the other end is located in the inner cavity of the fermentation box 310 and is arranged along the circumferential outer wall of the filter device 320; a plurality of external circulation sprinklers 372 are located on the external circulation pipeline 371 and are arranged toward the outer wall of the filter device 320; the external circulation sprinkler 372 is a rotating nozzle that can swing up and down, and it sprays clean water toward the outer wall of the filter net and around, and the clean water rinses the fermentation filter residue to carry the nutrients into the liquid storage cavity, and promotes the fermented particles to flow to the bottom of the filter net for easy discharge, and avoids the filter net from being blocked. When the water level in the liquid storage cavity is higher than or equal to the second preset liquid level, the drainage pipeline 345 is opened for drainage.

[0074] Specifically, the external circulation pipeline 371 is preferably a rectangular structure, and support rods are respectively arranged at the four vertices of the rectangle. The bottom ends of the support rods are fixed to the bottom wall of the fermentation box 310 to fix the external circulation pipeline 371; the heating device 380 can be arranged between the two support rods, and the external circulation pipeline 371 and the heating device 380 are respectively fixed by the support rods to simplify the device structure.

[0075] Optionally, the sewage discharge device 350 includes a sewage discharge pipeline 351 and a sewage discharge pumping assembly 352, one end of the sewage discharge pipeline 351 is connected to the bottom of the filter device 320; the sewage discharge pumping assembly 352 is located on the sewage discharge pipeline 351, and the sewage discharge pumping assembly 352 is connected to the control device to pump the fermented filter residue and water to the next level treatment unit. The sewage discharge pipeline 351 is an L-shaped structure on one side of the sewage discharge pumping assembly 352, the vertical part of the L-shaped structure is connected to the bottom interface of the filter device 320, and the horizontal part of the L-shaped structure is connected to the sewage discharge pumping assembly 352; at the same time, a support column is set at the bottom of the vertical part of the L-shaped structure to support the sewage discharge pipeline 351 in the fermentation box 310.

[0076] In a specific embodiment, the fermentation equipment 300 includes a liquid inlet device 330, a liquid discharge device 340, a sewage discharge device 350 and a control device. The liquid inlet device 330 is located above the fermentation equipment 300 and controls the amount of sewage entering the fermentation equipment 300. The clear liquid is discharged from the liquid discharge device 340 for use by the plants in the planting unit, and the particulate matter is discharged from the sewage discharge device 350 for further treatment.

[0077] The liquid inlet device 330 includes a liquid inlet pipeline 331, a liquid inlet control valve 332 and a first liquid level detection component 333. One end of the liquid inlet pipeline 331 is connected to the output end of the aquaculture sewage, and the other end is connected to two fermentation boxes 310 arranged in parallel. The liquid inlet control valve 332 is used to realize the liquid inlet of the two fermentation boxes 310. When the liquid level of the aquaculture sewage reaches the first preset liquid level of the filter net, the control device controls the liquid inlet control valve 332 to close the liquid inlet pipeline 331 on the current side, stop the flow of aquaculture sewage, and open the liquid inlet pipeline 331 on the other side, and the aquaculture sewage flows into the other fermentation box 310.

[0078] The fermentation box 310 includes a box body and a box cover, and a vent is arranged on the box cover. A filter screen is arranged inside the fermentation box 310, and the filter screen is in the shape of a conical funnel. A sewage pipe outlet is arranged at the bottom of the filter screen, and the outlet end of the sewage pipe outlet is connected to the sewage pipeline 351 of the sewage discharge device 350, and a support column is arranged at the bottom of the sewage pipeline 351. The external circulation sprinkler 372 is arranged in a ring around the filter screen, and support rods are respectively arranged at the four vertices of the external circulation pipeline 371. One end of the external circulation pipeline 371 is connected to the external circulation sprinkler 372. A nozzle is provided on the external circulation sprinkler 372, and the nozzle can swing up and down to spray water on the conical filter screen. The heating device 380 is arranged between the two support rods, and the fermentation temperature is controlled by heating the relatively clean sewage at the bottom of the fermentation box 310 and through internal circulation; the aquaculture sewage flows into the filter screen in the fermentation box 310 through the liquid inlet pipeline 331, and the relatively clean sewage passes through the filter screen and falls into the bottom of the fermentation box 310. The viscous liquid containing particles such as fish feces is collected in the filter screen until the liquid level reaches the liquid level sensing end of the first liquid level detection component 333, and the signal is transmitted to the control device to control the aquaculture sewage to switch and discharge into another fermentation equipment 300.

[0079] The drainage device 340 includes a drainage pipeline 345, a drainage pumping component 341, a drainage control valve 342 and a second liquid level detection component 343. The water pump is arranged at the bottom of the fermentation tank 310. The drainage pipeline 345 is connected to the lower processing unit. The liquid level sensing end of the second liquid level detection component 343 is arranged at the second preset liquid level at the bottom of the fermentation tank 310. When the relatively clean sewage leaked from the filter screen is accumulated at the bottom of the fermentation tank 310 and reaches the second preset liquid level of the fermentation tank 310, the liquid level sensing end of the second liquid level detection component 343 senses the liquid level and transmits a signal to the control device to control the drainage control valve 342 to open, and the clean liquid flows from the drainage pipeline 345 into the plant planting unit for plant growth; when the liquid level of the relatively clean sewage is lower than the third preset liquid level of the fermentation tank 310, the drainage control valve 342 is closed to stop drainage.

[0080] The sewage discharge system includes a sewage pumping component 352 and a sewage pipeline 351. The sewage pipeline 351 is connected to the bottom of the filter device 320. When the fermentation is completed, the sewage pumping component 352 is started, and the particle suspension in the filter screen flows into the sewage pipeline 351 from the sewage pipe port and is discharged through the sewage pumping component 352 and the sewage pipeline 351.

[0081] The specific working process is as follows: the aquaculture sewage containing large particles such as fish feces and bait residues enters the liquid inlet pipeline 331 and flows into the filter device 320. The particles such as feces and bait residues are intercepted by the filter net, and the relatively clean sewage leaks into the bottom of the fermentation box 310. When the relatively clean sewage reaches the second preset liquid level of the fermentation box 310, the second liquid level detection component 343 sends a signal to the control device, and the control device controls the discharge control valve 342 to operate, open the discharge pipeline 345, and discharge the relatively clean sewage into the lower-level processing unit; when the liquid level in the fermentation box 310 is lower than the third preset liquid level, , control the discharge control valve 342 of the discharge pipeline 345 to close and stop discharging; at the same time, when the liquid level of the filter screen is higher than the first preset liquid level, the liquid inlet control valve 332 is closed, and the liquid inlet pipeline 331 is closed to stop the inflow of aquaculture sewage, and the aquaculture sewage enters the fermentation equipment 300 on the other side through the liquid inlet control valve 332; when the liquid level of the filter screen is higher than the first preset liquid level, control the heating device 380 and the internal circulation device 360 ​​to open, adjust the appropriate fermentation temperature and ventilation conditions, such as adding fermentation bacteria, to promote the rapid fermentation of materials such as fish manure and residual bait. The water in the fermentation tank 310 enters the filter device 320 for internal circulation through the drainage pumping component 341, part of the drainage pipeline 345 and the internal circulation pipeline 361, and is sprayed on the fish feces and residual bait on the filter screen through the rotating nozzle. The relatively clear sewage starts the circulation mode between the fermentation tank 310 and the filter screen, and the vent hole keeps air from entering the fermentation tank 310. The rotary nozzle sprays relatively clear liquid to increase the fermentation oxygen conditions and promote the uniform mixing of the fermentation bacteria. When the fermentation is completed, the external circulation device 370 is started, and the external circulation sprinkler 372 sprays clean water toward the filter net from the outside of the filter net, and the relatively clean sewage rich in nutrients (i.e., fermentation liquid) flows from the filter device 320 into the liquid storage chamber at the bottom of the fermentation box 310. When the liquid level in the liquid storage chamber reaches the second preset liquid level, it is discharged into the lower-level processing unit by the discharge device 340; after the external circulation device 370 is flushed for a preset time, the sewage pumping component 352 is started to promote the fermented particles to flow to the bottom of the filter net for easy discharge, and the particle suspension in the filter net flows from the sewage pipe outlet into the sewage pipeline 351, and is discharged through the sewage pumping component 352 and the sewage pipeline 351.

[0082] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0083] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A fermentation device, characterized in that: include: A fermentation box, wherein the inner cavity of the fermentation box is provided with a filtering device for filtering water entering the fermentation box; A liquid inlet device, comprising a liquid inlet pipeline, wherein the liquid inlet pipeline is located at the top of the fermentation box and is arranged opposite to the filtering device; A drainage device, comprising a drainage pipeline, wherein the drainage pipeline is connected to the bottom of the fermentation box and is used to discharge the water filtered by the filtering device; A sewage discharge device connected to the bottom of the filter device and used to discharge the water and filter residue of the filter device after fermentation; A control device is connected to the liquid inlet device, the liquid discharge device and the sewage discharge device respectively.

2. The fermentation equipment according to claim 1, characterized in that: Also includes: An internal circulation device, one end of which is connected to the fermentation box, and the other end of which is connected to the filter cavity of the filter device, is used to transport the water filtered in the fermentation box to the filter cavity of the filter device for internal circulation.

3. The fermentation equipment according to claim 2, characterized in that: The liquid discharge device also includes: A drainage pumping assembly is located in the fermentation box, the drainage pumping assembly is connected to the drainage pipeline, and is used to pump the water filtered by the filtering device; The discharge control valve is located on the discharge pipeline and controls the on-off of the discharge pipeline. The discharge pumping assembly and the discharge control valve are respectively connected to the control device.

4. The fermentation equipment according to claim 3, characterized in that: The internal circulation device comprises an internal circulation pipeline, one end of which is connected to the discharge pipeline via the discharge control valve; The control device controls the drain control valve to switch direction and open the internal circulation pipeline, and the liquid at the bottom of the fermentation box enters the filtering device through the drain pumping assembly, part of the drain pipeline and the internal circulation pipeline for internal circulation.

5. The fermentation equipment according to claim 3, characterized in that: The liquid discharge device also includes: A second liquid level detection component, located at a second preset liquid level at the bottom of the fermentation box, for detecting the liquid level of the water in the fermentation box after being filtered by the filtering device; The control device is connected to the second liquid level detection component, and when the liquid level of the fermentation box is higher than the second preset liquid level, the control device controls the discharge control valve to operate and open the discharge pipeline.

6. The fermentation equipment according to claim 1, characterized in that: The liquid inlet device also includes: A liquid inlet control valve, located on the liquid inlet pipeline, used to control the on-off of the liquid inlet pipeline; A first liquid level detection component, located in the filter cavity of the filter device, and used to detect the liquid level of the filter cavity of the filter device; The control device is connected to the liquid inlet control valve and the first liquid level detection component respectively. When the liquid level in the filter chamber of the filter device is higher than a first preset liquid level, the control device controls the liquid inlet control valve to operate and disconnect the liquid inlet pipeline.

7. The fermentation equipment according to claim 1, characterized in that: It also includes an external circulation device connected to the control device, and the external circulation device includes: An external circulation pipeline, one end of which is connected to a water source, and the other end of which is located in the inner cavity of the fermentation box and is arranged along the circumferential outer wall of the filtering device; A plurality of external circulation sprinklers are located on the external circulation pipeline and are arranged toward the outer wall of the filtering device.

8. The fermentation equipment according to claim 7, characterized in that: The sewage discharge device comprises: A sewage discharge pipeline, one end of which is connected to the bottom of the filter device; A sewage pumping assembly is located on the sewage pipeline and is connected to the control device.

9. The fermentation equipment according to any one of claims 1 to 8, characterized in that: Also includes: A heating device is located in the inner cavity of the fermentation box and is used to adjust the temperature of the inner cavity of the fermentation box; the heating device is connected to the control device.

10. The fermentation equipment according to claim 9, characterized in that: The filtering device is a conical funnel-shaped filtering screen.

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