An ecological crab nest simulating a natural environment

Abstract

The application relates to the crab breeding technical field and discloses an ecological crab nest simulating a natural environment, which comprises the following steps: a pipe body is arranged to be inclined relative to a horizontal plane, a clay layer attached in the pipe body forms a hollow channel and a main body bin, the main body bin is located at one end of the pipe body with a lower height, one end of the pipe body with a higher height is provided with a hole, a top wall of the pipe body is provided with a feeding opening for feeding the main body bin, one end of the channel is communicated with the main body bin, and the other end of the channel extends to be communicated with the hole; the diameter of the channel is matched with the body of a crab, and the diameters of the main body bin and the hole are greater than the body of the crab. Compared with natural water area or pond culture, the ecological crab nest is convenient to salvage, is not easy to cause harm to the crabs during fishing, does not affect the appearance, can realize one crab one nest, reduces the cannibalism of the crabs and the influence of other breeding varieties, is beneficial to the survival and growth of the crabs, the crabs are fed through the feeding opening, feeding into water is avoided, feed waste is reduced, and pollution to water quality is effectively avoided.

Description

Technical Field

[0001] This application relates to the field of crab farming technology, and in particular to an ecological crab nest that simulates a natural environment. Background Technology

[0002] The Chinese mitten crab (Eriocheir sinensis) exhibits a pronounced burrowing habit, a tendency more pronounced in juveniles than adults, and more noticeable in females than males. The burrows they create serve as excellent defenses against predators. They typically choose locations on slopes between different water levels, and the burrows are generally curved tubular, sloping at a 10-20 degree angle to the ground, with the bottom not connecting to the outside. A small amount of water often accumulates deep within the burrow to maintain a certain level of humidity. The burrows are usually well-hidden. The entrance is larger than the crab's body, the burrow diameter is roughly the same as its body, the floor is 2-4 times larger than the crab's body, and the burrow is approximately 20-80 centimeters deep. They generally choose steep banks with firm soil for easy access and a sturdy burrow. Burrowing not only serves as defense but also facilitates overwintering. When water temperatures drop below 10°C, the Chinese mitten crab's activity decreases, allowing it to safely survive the winter. During its juvenile stage, it is nocturnal, leading a burrowing life.

[0003] Since the 1970s, when the artificial breeding of Chinese mitten crabs began to be explored, the industry has developed rapidly. Traditional breeding methods typically involve releasing them into ponds or lakes. However, due to the complex environment of these areas, the crabs easily hide in the mud, making them difficult to catch. Catching them can easily cause injury, affecting their appearance and resulting in economic losses. Furthermore, pond or lake breeding exposes the crabs to predators, leading to further losses. Large-scale feeding into the water can also lead to feed waste and water pollution, causing eutrophication. Limited space also prevents vertical farming on land, further limiting the breeding methods. Currently, many farmers use breeding boxes, which have lower investment costs and are easier to harvest. However, the small space in these boxes and the low oxygen levels in the water are detrimental to the survival and growth of the crabs.

[0004] Therefore, how to promote the survival and growth of crabs, reduce feed waste, and effectively avoid water pollution are problems that need to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide an ecological crab nest that simulates a natural environment, in order to solve the problems that existing farming methods are not conducive to the survival and growth of crabs, and easily lead to feed waste and water pollution.

[0006] To solve the above-mentioned technical problems, this application provides an ecological crab nest that simulates a natural environment, comprising: a tube body and a clay layer;

[0007] The tube is inclined relative to the horizontal plane. The clay layer attached to the tube forms a hollow channel and main chamber. The main chamber is located at the lower end of the tube, and an opening is provided at the higher end of the tube. The top wall of the tube has a feeding port for feeding into the main chamber. One end of the channel is connected to the main chamber, and the other end of the channel extends to connect with the opening. The diameter of the channel matches the crab's body, and the diameters of the main chamber and the opening are larger than the crab's body.

[0008] Optionally, it also includes a power supply device and a controller. The opening is equipped with an electric induction door, and the side wall of the passage is equipped with multiple infrared sensors. The multiple infrared sensors are arranged along the length of the passage. The controller is communicatively connected to the electric induction door and the infrared sensors respectively. The controller is used to control the electric induction door to open and close according to the signals fed back by the infrared sensors.

[0009] Optionally, the outer wall of the tube is provided with a heat insulation layer, and the heat insulation layer is provided with a dispensing channel, which is connected to the main compartment via the dispensing port.

[0010] Optionally, the clay layer is provided with a heating layer and a temperature sensor. The temperature sensor and the heating layer are communicatively connected to the controller, which controls the heating layer to heat according to the temperature detected by the temperature sensor.

[0011] Optionally, cameras are installed on the side walls of the channel and the side walls of the main compartment to record the crab's behavior and growth.

[0012] Optionally, the electric sensor door is provided with a light-shielding layer, and a plurality of ventilation openings are provided below the light-shielding layer. Each ventilation opening is provided with an electrically operated window, and the electrically operated window is communicatively connected to the controller.

[0013] Optionally, the side wall of the pipe body is provided with a water inlet, and the lower end of the pipe body is provided with a sewage outlet. The insulation layer is provided with a water inlet pipe and a sewage outlet channel. The water inlet pipe is connected to the main body compartment through the water inlet, and the sewage outlet channel is connected to the main body compartment through the sewage outlet.

[0014] Optionally, both the sewage discharge channel and the discharge channel are equipped with opening and closing doors (13).

[0015] Optionally, the main compartment is equipped with a microporous oxygenator and a dissolved oxygen detector, which are communicatively connected to the controller.

[0016] Optionally, when the electric sensor door is in the open state, the electric sensor door is in a horizontal position.

[0017] This application provides an ecological crab nest simulating a natural environment, comprising: a tube body and a clay layer; the tube body is inclined relative to a horizontal plane, and the clay layer attached to the tube body forms a hollow channel and a main chamber. The main chamber is located at the lower end of the tube body, and an opening is provided at the higher end of the tube body. A feeding port for feeding the main chamber is provided on the top wall of the tube body. One end of the channel connects to the main chamber, and the other end of the channel extends to connect with the opening. The diameter of the channel matches the crab's body, while the diameters of the main chamber and the opening are larger than the crab's body. Compared to aquaculture in natural waters or ponds, setting up ecological crab nests facilitates harvesting, minimizes damage to the crabs during harvesting, and does not affect their appearance. Ecological crab nests allow for one nest per crab, reducing cannibalism and the impact of other farmed species, thus promoting crab survival and growth. Feeding the crabs through the feeding port avoids feeding into the water, reducing feed waste and effectively preventing water pollution.

[0018] In addition, the main materials of the ecological crab nest in this application are PVC pipes and clay layers, which are readily available and have low cost. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A structural diagram of an ecological crab nest simulating a natural environment is provided in an embodiment of this application;

[0021] Figure 2 A schematic diagram of an electric sensor door provided in an embodiment of this application;

[0022] Figure 3 A schematic diagram of another electrically operated sensor door provided in an embodiment of this application;

[0023] The attached diagram is labeled as follows: 1 is the clay layer, 2 is the channel, 3 is the main chamber, 4 is the delivery channel, 5 is the power supply device, 6 is the controller, 7 is the electric induction door, 8 is the infrared sensor, 9 is the insulation layer, 10 is the camera, 11 is the water inlet pipe, 12 is the sewage discharge channel, 13 is the opening and closing door, 14 is the microporous aerator and dissolved oxygen detector, 701 is the light-shielding layer, 702 is the vent, and 703 is the electric opening and closing window. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0025] The core of this application is to provide an ecological crab nest that simulates a natural environment, which is conducive to the survival and growth of crabs, reduces feed waste, and effectively avoids water pollution.

[0026] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Figure 1 A structural diagram of an ecological crab nest simulating a natural environment is provided for embodiments of this application, such as... Figure 1 As shown, an ecological crab nest simulating a natural environment includes: a tube body and a clay layer 1; the tube body is inclined relative to the horizontal plane, and the clay layer 1 attached to the tube body forms a hollow channel 2 and a main chamber 3. The main chamber 3 is located at the lower end of the tube body, and an opening is provided at the higher end of the tube body. The top wall of the tube body is provided with a feeding port for feeding into the main chamber 3. One end of the channel 2 is connected to the main chamber 3, and the other end of the channel 2 extends to connect with the opening; wherein, the diameter of the channel 2 matches the crab body, and the diameter of the main chamber 3 and the opening is larger than the crab body.

[0028] In this embodiment, the pipe is inclined relative to the horizontal plane at an angle of approximately 10-20 degrees. The pipe can be made of polyvinyl chloride (PVC), which is lightweight, waterproof, moisture-proof, flame-retardant, and heat-insulating. The channel 2 and the main chamber 3 are composed of a clay layer 1. Considering the need for the crab to exert force when crawling, and to facilitate its movement, the clay layer 1 can be made of ultra-light clay. Ultra-light clay is environmentally friendly, non-toxic, extremely light, and not easily broken, so it will not be damaged by the crab's movement. The opening is larger than the crab's body, the diameter of the channel 2 is roughly the same as the crab's body, and the main chamber 3 is 2-4 times larger than the crab's body, with a depth of approximately 20-80 cm. The main chamber 3 is located at the lower end of the pipe, allowing for a small amount of water to accumulate inside, maintaining a certain level of humidity within the opening. This application does not specify the exact location of the entire ecological crab nest. The ecological crab nest has wide applicability and can be used for scientific research, such as crab behavioral experiments (temperature, feed, light, dissolved oxygen, ammonia nitrogen, sound, and competition among crabs), to observe various activities during crab growth. It can also be used in production, such as pond farming, factory-style indoor farming, and precision farming, and can also be used for ornamental crab farming (keeping crabs as pets). During the farming process, the ecological crab nest ensures one nest per crab, greatly reducing cannibalism and the impact of other farmed species. It reduces energy loss due to these behaviors and decreases corresponding casualties, thus improving farming efficiency. In actual farming, the device is not limited to fixing a single crab; all crabs can enter the nest on a first-come, first-served basis.

[0029] This application provides an ecological crab nest simulating a natural environment, comprising: a tube and a clay layer; the tube is inclined relative to a horizontal plane, and the clay layer attached to the tube forms a hollow channel and a main chamber. The main chamber is located at the lower end of the tube, and an opening is provided at the higher end of the tube. A feeding port for feeding the main chamber is provided on the top wall of the tube. One end of the channel connects to the main chamber, and the other end of the channel extends to connect with the opening. The diameter of the channel matches the crab's body, while the diameters of the main chamber and the opening are larger than the crab's body. Compared to aquaculture in natural waters or ponds, setting up ecological crab nests makes harvesting easier, reduces the risk of injury to the crabs during harvesting, and does not affect their appearance. Ecological crab nests allow for one nest per crab, reducing cannibalism and the impact of other farmed species, thus promoting crab survival and growth. Feeding the crabs through the feeding port avoids feeding them into the water, reducing feed waste and effectively preventing water pollution.

[0030] In addition, the main materials of the ecological crab nest in this application are PVC pipes and clay layers, which are readily available and have low cost.

[0031] Based on the above embodiments, this application embodiment also includes a power supply device 5 and a controller 6. The opening is provided with an electric induction door 7, and the side wall of the passage 2 is provided with multiple infrared sensing devices 8. The multiple infrared sensing devices 8 are arranged along the length direction of the passage 2. The controller 6 is communicatively connected to the electric induction door 7 and the infrared sensing devices 8 respectively. The controller 6 is used to control the electric induction door 7 to open and close according to the signal fed back by the infrared sensing devices 8.

[0032] The power supply device 5 and controller 6 can be housed within the insulation layer 9 described below. The power supply device 5 includes batteries, wires, etc., to power various components in the ecological crab nest (camera 10, infrared sensor 8, microporous aerator, and dissolved oxygen detector 14, etc.), and stores electricity as needed (in production, the power supply device 5 can be connected to solar power generation to reduce energy costs). This application embodiment does not specifically limit the electric sensor door 7; its shape and size match the opening. When the controller 6 first receives a signal from the infrared sensor 8 near the main chamber 3, and then receives a signal from the infrared sensor 8 far away from the main chamber 3, it indicates that the crab is out, and the controller 6 controls the electric sensor door 7 to open. When the controller 6 first receives a signal from the infrared sensor 8 far away from the main chamber 3, and then receives a signal from the infrared sensor 8 near the main chamber 3, it indicates that the crab is returning to the nest, and the controller 6 controls the electric sensor door 7 to close.

[0033] Furthermore, when the electric sensor gate 7 is open, it is in a horizontal position, ensuring that crabs can move onto the electric sensor gate 7 to stay (to observe environmental conditions, sunbathe, etc.).

[0034] By setting up an electric sensor gate 7, crabs can effectively avoid predators, thus providing them with a quiet environment isolated from the outside world.

[0035] Based on the above embodiments, the outer wall of the tube in this application embodiment is provided with a heat insulation layer 9, and the heat insulation layer 9 is provided with a dispensing channel 4, which is connected to the main chamber 3 via a dispensing port. This application embodiment does not specifically limit the material of the heat insulation layer 9; materials such as foam and sponge can be used to ensure the heat insulation effect of the crab nest. After being wrapped with heat insulation material, the entire device has a rectangular structure, which facilitates installation, transportation, and cleaning. By setting the heat insulation layer 9, a heat insulation function is achieved.

[0036] Furthermore, the clay layer 1 is equipped with a heating layer and a temperature sensor. The temperature sensor and the heating layer are communicatively connected to the controller 6, which controls the heating layer based on the temperature detected by the temperature sensor. By setting up the heating layer and the temperature sensor, the temperature of the crab nest can be regulated, thereby providing a comfortable environment for the crabs. The controller 6 may also include a communication module, which can communicate with external terminal devices, such as computers or mobile phones, allowing users to easily adjust the water temperature inside the main chamber 3.

[0037] Based on the above embodiments, in this application embodiment, both the side wall of the channel 2 and the side wall of the main compartment 3 are equipped with cameras 10, which are used to record the behavior and growth of crabs.

[0038] Furthermore, the camera 10 can communicate with external terminals, allowing users to observe the crabs' feeding behavior at any time and feed them precisely, thus avoiding feed waste. The camera 10 can also be used to observe the crabs molting.

[0039] Based on the above embodiments, Figure 2 This is a schematic diagram of an electric sensor door provided in an embodiment of this application. Figure 3 A schematic diagram of another electrically operated sensor door provided in an embodiment of this application; as shown Figure 2 and Figure 3 As shown, the electric sensor door 7 of this application embodiment is provided with a light-shielding layer 701, and a plurality of ventilation openings 702 are provided below the light-shielding layer 701. Each ventilation opening 702 is provided with an electric opening and closing window 703, which is communicatively connected to the controller 6.

[0040] The upper two-thirds of the electric sensor door 7 can be an insulated, airtight light-blocking layer 701, while the lower one-third has several ventilation openings 702. These openings 702 can be rectangular or circular, depending on actual needs. An electrically operated window 703 is installed above the ventilation openings 702, which can also be opened / closed according to the crab's behavior. Figure 3 As shown, when the crab is out of the nest, the electric sensor door 7 opens, the electric window 703 closes, and the electric sensor door 703 opens to the horizontal position, thus ensuring the crab's convenience when entering / returning to the nest; as Figure 2 As shown, when the crabs are in their nest state, the electric sensor door 7 is closed, and the electric opening and closing window 703 on the electric sensor door 7 is open, providing shade while ensuring ventilation and water exchange. In addition, when the crabs are in their nest state, staff can close the electric opening and closing window 703 according to actual production needs (heat preservation, cleaning, predator avoidance, and prevention of external interference, etc.), allowing the crabs to obtain a quiet environment isolated from the outside world.

[0041] Based on the above embodiments, the side wall of the pipe body in this application embodiment is provided with a water inlet, and the end of the pipe body with a lower height is provided with a sewage outlet. The insulation layer 9 is provided with a water inlet pipe 11 and a sewage outlet 12. The water inlet pipe 11 is connected to the main body compartment 3 through the water inlet, and the sewage outlet 12 is connected to the main body compartment 3 through the sewage outlet.

[0042] By setting up the water inlet pipe 11 and the sewage discharge channel 12, staff can easily clean the main compartment 3 regularly. Furthermore, both the sewage discharge channel 12 and the feeding channel 4 are equipped with opening and closing doors 13. These doors 13 can be closed when feeding and cleaning are not required, providing a quiet environment for the crabs and protecting them from external disturbances. Alternatively, opening and closing doors can be installed at the connection between the sewage discharge channel 12 and the main compartment 3. All opening and closing doors 13 can be electrically operated, allowing users to control their opening and closing via a terminal.

[0043] Based on the above embodiments, the main compartment 3 of this application embodiment is equipped with a microporous oxygenator and a dissolved oxygen detector 14, which are communicatively connected to the controller 6.

[0044] The controller 6 can turn the micro-pore aerator on or off according to the dissolved oxygen concentration detected by the dissolved oxygen detector, so as to improve the dissolved oxygen status of the water in the crab nest and synchronize the data to the terminal mobile phone.

[0045] To better understand this application, the following section describes an ecological crab nest that simulates a natural environment, using specific scenarios as examples.

[0046] Once the ecological crab nests are placed according to actual needs (the actual breeding location), the entire rectangular ecological crab nest will have a certain degree of tilt angle with the horizontal plane. This is illustrated by placing the ecological crab nests around the perimeter of the breeding pond.

[0047] Luring the crabs into the nest: The electric sensor door 7 opens to a horizontal position. At this time, the opening and closing doors 13 of the release channel 4 and the sewage channel 12, as well as the water inlet pipe 11, are all closed. The crabs swim to the electric sensor door 7 and enter the crab nest. The mobile app can observe the crabs' behavior as they enter the nest through the camera 10 in the channel 2. Infrared sensors 8 are installed sequentially in the crab nest channel. When a crab passes by, the infrared sensors 8 far from and near the main chamber 3 detect the crab's passage in sequence. At this time, the electric sensor door 7 at the entrance automatically closes to prevent other crabs from entering. The electric opening and closing window 703 at the ventilation opening 702 at the bottom of the electric sensor door 7 opens, ensuring a dim lighting environment inside the nest while allowing for water and air exchange between the crab nest and the outside, thus ensuring dissolved oxygen. The crabs continue to move forward until they enter the main chamber 3. At this time, the crabs' behavior can be observed through the camera 10 inside the main chamber 3 connected to the mobile app.

[0048] Crab Exit: When a crab leaves the main chamber 3 and exits through the passage 2, infrared sensors 8, located near and away from the main chamber 3, sequentially detect the crab's passage. At this time, the electric sensor door 7 at the entrance automatically opens to a horizontal position, and the electric opening and closing window 703 at the lower ventilation opening 702 closes, ensuring that the crab can move onto the electric sensor door 7 to rest (observe environmental conditions, sunbathe, etc.). When the crab leaves, the electric sensor door 7 remains open in a horizontal position.

[0049] Ensure dissolved oxygen: The dissolved oxygen in the water can be monitored in real time by the dissolved oxygen monitor in the main chamber 3. When the dissolved oxygen is insufficient, the micro-pore aerator is turned on to improve the dissolved oxygen status in the crab nest and the data is synchronized to the terminal mobile app.

[0050] Feeding: Depending on actual needs, crab feed can be fed directly from the feeding port on top of the device or by connecting the feeding port to a pipe for batch and timed feeding. The feeding status of the crabs can be observed through a mobile app for precise feeding. The opening and closing gate 13 of the feeding channel 4 can be set to closed / open / normally open state using the mobile app as needed.

[0051] Sewage Discharge and Cleaning: The water in the main chamber 3 is cleaned according to actual usage needs. Especially when the opening of the ecological crab nest is higher than the external aquaculture water surface, preventing water exchange and ensuring water quality in the main chamber 3, a time when the crabs are not in the nest can be selected. Controlled via a mobile app, the opening and closing gate 13 of the sewage discharge channel 12 and the water inlet pipe 11 are opened, using external water to flush the main chamber 3 and flush out the sewage from the discharge port. When sewage discharge is complete, the opening and closing gate 13 of the sewage discharge channel 12 is closed via the mobile app. If a certain water volume needs to be maintained in the main chamber 3, the water inlet pipe 11 continues to operate after the opening and closing gate 13 of the sewage discharge channel 12 is closed until the required water volume in the main chamber 3 is reached.

[0052] Insulation and heating: such as Figure 1 As shown, insulation material is used to wrap both the channel 2 and the main chamber 3 of the crab nest, thus providing insulation and heat protection. If other production needs require it, a heating system can be added, with the heating layer buried in the clay layer 1 (or a certain section). When the temperature is too high or too low, the temperature of the water in the main chamber 3 can be adjusted via a mobile app or controller 6.

[0053] The ecological crab nest proposed in this application closely resembles the ecological habits and burrowing habits of the Chinese mitten crab, which is beneficial to the survival and growth of the crabs, reduces breeding costs and space requirements, and increases breeding efficiency. It allows for precise observation (of the crabs' feeding status and living habits), is easy to install, disassemble, and clean, and has multiple uses.

[0054] The above provides a detailed description of the ecological crab nest simulating a natural environment provided in this application. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0055] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An ecological crab nest simulating a natural environment, characterized in that, include: Pipe body and clay layer (1); The tube is inclined relative to the horizontal plane. The clay layer (1) attached to the tube forms a hollow channel (2) and a main chamber (3). The main chamber (3) is located at the lower end of the tube. The higher end of the tube has an opening. The top wall of the tube has a feeding port for feeding into the main chamber (3). One end of the channel (2) is connected to the main chamber (3), and the other end of the channel (2) extends to connect with the opening. The diameter of the channel (2) matches the crab body, and the diameters of the main chamber (3) and the opening are larger than the crab body. It also includes a power supply device (5) and a controller (6). The opening is equipped with an electric induction door (7). The side wall of the passage (2) is equipped with multiple infrared sensing devices (8). The multiple infrared sensing devices (8) are arranged along the length of the passage (2). The controller (6) is communicatively connected to the electric induction door (7) and the infrared sensing devices (8) respectively. The controller (6) is used to control the electric induction door (7) to open and close according to the signal fed back by the infrared sensing devices (8). The outer wall of the tube is provided with a heat insulation layer (9), and the heat insulation layer (9) is provided with a delivery channel (4). The delivery channel (4) is connected to the main compartment (3) through the delivery port. The clay layer (1) is provided with a heating layer and a temperature sensor. The temperature sensor and the heating layer are communicatively connected to the controller (6). The controller (6) is used to control the heating layer to heat according to the temperature detected by the temperature sensor. Cameras (10) are provided on the side walls of the channel (2) and the main compartment (3). The cameras (10) are used to record the behavior and growth of the crabs. The electric sensor door (7) is provided with a light-shielding layer (701), and a plurality of ventilation openings (702) are provided below the light-shielding layer (701). Each ventilation opening (702) is provided with an electric opening and closing window (703), and the electric opening and closing window (703) is communicatively connected to the controller (6). The side wall of the pipe body is provided with a water inlet, and the lower end of the pipe body is provided with a sewage outlet. The insulation layer (9) is provided with a water inlet pipe (11) and a sewage outlet channel (12). The water inlet pipe (11) is connected to the main body compartment (3) through the water inlet, and the sewage outlet channel (12) is connected to the main body compartment (3) through the sewage outlet. Both the sewage discharge channel (12) and the discharge channel (4) are equipped with opening and closing doors (13). The main compartment (3) is equipped with a microporous oxygenator and a dissolved oxygen detector (14), which are communicatively connected to the controller (6). When the electric sensor door (7) is in the open state, the electric sensor door (7) is in a horizontal position.

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