Round barrel type insect breeding device, breeding unit and breeding method based on stable-pressure ventilation

Abstract

The invention relates to the technical field of insect breeding, in particular to a barrel-shaped insect breeding device, a breeding unit and a breeding method based on stable-pressure ventilation, and is particularly suitable for large-scale breeding of saprophagous insects such as hermetia illucens and tenebrio molitor. The barrel-shaped insect breeding device comprises a main frame, a barrel-shaped breeding unit, a rotating column and an air duct. The culture units surround the rotating column, and the pressure equalizing cavity is formed in the top or the bottom of the culture container; the air channel is divided into a central air channel and a peripheral air channel which are respectively communicated with the top and bottom spaces of the breeding container. The air pressure adjusting assembly is connected with the air channel, so that pressure difference is formed between the upper space and the lower space of the breeding container. The rotating column at least can drive the breeding container to rotate, and feed throwing and insect harvesting are facilitated. The breeding units are functional core modules of the barrel-shaped breeding device, and the number of the breeding units can be flexibly increased or decreased according to the breeding scale.

Description

Technical Field

[0001] This invention relates to the field of insect farming technology, specifically to the large-scale farming of saprophytic insects such as black soldier flies and mealworms, and particularly to a cylindrical insect farming device, farming unit, and farming method based on stable pressure ventilation. Background Technology

[0002] Currently, black soldier flies have become a core aquaculture species in the insect protein industry due to their high protein conversion rate and strong waste degradation capabilities. Large-scale black soldier fly farming often employs multi-layered, three-dimensional farming models to improve space utilization. To maintain the required temperature, humidity, oxygen concentration, and insect excrement drying during the farming process, the industry is gradually promoting forced ventilation technology. However, existing forced ventilation solutions are mainly horizontal ventilation and still have significant technical shortcomings, directly hindering the automation and industrialization of black soldier fly farming.

[0003] Existing technologies suffer from poor ventilation uniformity, leading to oxygen deficiency and the accumulation of harmful gases. Current forced ventilation schemes often focus on the drying stage (such as strong winds during the drying of insect excrement), failing to optimize the ventilation structure for the multi-layered feed conditions during the rearing period. They either rely on surface blowing or simple straight air ducts, failing to create a stable and controllable air pressure difference between the multiple rearing layers. This results in airflow only penetrating the upper layer, leaving the lower layers in a chronically oxygen-deficient state. Simultaneously, harmful gases such as ammonia and hydrogen sulfide produced by insect metabolism cannot be expelled in time, accumulating in the lower layers. This not only inhibits the feeding and growth rate of black soldier fly larvae (extending the rearing cycle by 15%-20%) but also easily causes mass mortality, significantly reducing the survival rate. More importantly, the rearing density, feed input, and number of fresh larvae produced per unit area are all at a limited and low level, resulting in low yields per acre, essentially no different from ordinary non-automated "trough rearing."

[0004] Existing technologies suffer from imbalanced temperature and humidity control, poor adaptability to insect excrement processing and automation, and insufficient ventilation, resulting in excessively high local humidity (relative humidity > 85%) in the breeding layer, causing the moisture content of insect excrement to remain above 55% for a long time. On the one hand, high moisture content makes insect excrement prone to clumping, and existing automated screening equipment cannot effectively separate insects from insect excrement, forcing a return to manual sorting, which not only increases labor costs by more than 30%, but also easily causes mechanical damage to insects. On the other hand, the combination of excessive humidity and lack of oxygen further aggravates the risk of mold growth in the feed layer and pollutes the breeding environment.

[0005] Existing technologies are energy-intensive and have poor environmental adaptability, which restricts large-scale promotion. Current forced ventilation schemes lack designs adapted to the breeding cycle (feeding period, excretion period, and drying period). In order to maintain the basic breeding temperature (the suitable high temperature range for black soldier flies is 38-43 degrees Celsius), high-power air supply or additional electric heating is often used throughout the cycle, resulting in heat exchange efficiency of less than 40% and energy consumption of 3.5-4.2 kWh / m²·day per unit breeding area. Especially in the high and low temperature seasons, fluctuations in the outdoor environment can easily cause the ventilation system to be unable to maintain a stable breeding temperature, requiring frequent manual intervention, which increases the complexity of operation and further reduces breeding efficiency.

[0006] In addition, existing technologies often adopt low-density farming (≤120,000 heads / ㎡) to avoid the above problems. Although this can alleviate local hypoxia and humidity problems, it greatly reduces space utilization and the cost advantage of multi-layer farming equipment cannot be realized. This results in the investment return cycle of automated farming units being extended to 2-3 years, which seriously hinders the large-scale and industrialized development of black soldier fly farming.

[0007] In summary, the current forced ventilation technology for black soldier fly farming urgently needs to overcome the core bottlenecks of "poor ventilation uniformity, difficulty in coordinating temperature, humidity and harmful gas control, and high energy consumption" in order to meet the automated environmental requirements of multi-layer three-dimensional farming and provide technical support for the large-scale implementation of the insect protein industry. Summary of the Invention

[0008] The purpose of this invention is to solve problems such as uneven ventilation effect in the breeding and environmental control unit, low accuracy of environmental parameter control, and difficulty in automatic separation of manure and sewage. It proposes a cylindrical insect breeding device, breeding unit and breeding method based on stable pressure ventilation.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A cylindrical insect breeding device based on pressure-stabilized ventilation includes a main frame on the periphery, an insect breeding unit capable of pressure-stabilized ventilation, a feeding channel for insects and insect excrement, and a rotating column located at the center of the main frame. One or more breeding units are arranged around the rotating column within the main frame. Each insect breeding unit includes a breeding container and a pressure equalization chamber located at the top and / or bottom of the breeding container. A manure collection plate is located below the breeding container. Several holes are formed in the bottom plate of the breeding container, and the top and bottom spatial chambers of the breeding container are connected through these holes. At least one of the two spatial chambers at the top and bottom of the breeding container is a pressure equalization chamber. Two air ducts are provided on the main frame, and these two air ducts respectively connect the top and bottom spatial chambers of the breeding container, allowing airflow through the breeding container to enter through one air duct, pass through the holes, and exit through the other air duct. At least one of the two air ducts connecting the spatial chamber serving as the pressure equalization chamber is connected to a pressure regulating component for controlling the air pressure within the pressure equalization chamber.

[0011] Preferably, the two air ducts are designated as air duct one and air duct two, the rotating column is a hollow frame rotating column, the central cavity of the rotating column serves as air duct one, and air duct two is located on the periphery of the aquaculture container.

[0012] Preferably, the main frame is provided with an outer cover, and the outer cover and the outer edge of the breeding unit form a second air duct.

[0013] Preferably, the outer cover is a thermal insulation cover.

[0014] Preferably, the outer edge of the manure receiving plate is connected to the bottom of the adjacent breeding container above it via a sealing element one, and the bottom of the inner edge of the manure receiving plate is connected to the top of the adjacent breeding container below it via a sealing element two, thereby enabling air duct two to communicate with the space chamber at the bottom of the breeding container and air duct one to communicate with the space chamber at the top of the breeding container; or the outer edge of the manure receiving plate is connected to the adjacent breeding container below it via a sealing element one, and the top of the inner edge of the manure receiving plate is connected to the bottom of the adjacent breeding container above it via a sealing element two, thereby enabling air duct two to communicate with the space chamber at the top of the breeding container and air duct one to communicate with the space chamber at the bottom of the breeding container.

[0015] Preferably, the breeding container and the manure receiving plate are fan-shaped annular structures surrounding the rotating column, and the feeding channel passes through the breeding container and the manure receiving plate.

[0016] Preferably, the breeding container and the manure receiving plate are respectively provided with scraper one and scraper two, and scraper one and scraper two are arranged radially with the center of the rotating column as the center. The breeding container is provided with at least two scrapers one that are arranged on both sides of the feeding channel to isolate the breeding space of the breeding container from the feeding channel. Scraper one can rotate relative to the breeding container, and scraper two can rotate relative to the manure receiving plate. Each layer of the breeding container can rotate with the rotating column individually, or multiple layers of breeding containers can rotate with the rotating column simultaneously.

[0017] Preferably, the breeding container is provided with multiple scrapers 1 that can divide the space chamber on the breeding container into multiple independent chambers, and / or the manure receiving plate is provided with multiple scrapers 2 that can divide the space chamber between the manure receiving plate and the breeding container into multiple independent chambers.

[0018] Preferably, the rotating column is provided with a supporting disc, the bottom inner end of the manure receiving plate is mounted on the supporting disc via pulleys, and the outer end is connected to the main frame; the bottom outer end of the breeding container is rotatably and slidably connected to the main frame, and the bottom inner end is rotatably and slidably mounted on the manure receiving plate.

[0019] Preferably, the second scraper is fixed to the bottom of the aquaculture container and can rotate with the aquaculture container, and a scraper ring frame is rotatably and slidably provided on the main frame, with the first scraper located at the bottom of the scraper ring frame.

[0020] Preferably, the rotating column or the supporting disc is provided with a plurality of electric latches for respectively inserting the aquaculture container and the scraper frame.

[0021] Preferably, the main frame is provided with electric latches for inserting and fixing the aquaculture container and the scraper frame.

[0022] Preferably, the air pressure regulating assembly includes an air duct connected to the top of the air duct, a fan for drawing or supplying air to the air duct, and a main controller, with the bottom end of the air duct sealed.

[0023] Preferably, the upper and / or lower ends of the outer cover are connected to the outside; or the upper and / or lower ends of the outer cover are connected to a second air duct, which is connected to a fan and a main controller.

[0024] Preferably, the bottom of the rotating column is provided with a rotation drive element.

[0025] Preferably, a conveyor is provided at the bottom of the main frame corresponding to the material feeding channel.

[0026] An insect breeding unit based on pressure-stabilized ventilation is applied to the aforementioned cylindrical insect breeding device based on pressure-stabilized ventilation.

[0027] An insect rearing method based on pressure-stabilized ventilation, using either a cylindrical insect rearing device or an insect rearing unit based on pressure-stabilized ventilation, includes the following steps:

[0028] 1. Place insects and feed on the breeding containers;

[0029] 2. By using the wind pressure regulating component to form a stable negative pressure and / or positive pressure in the pressure equalization chamber, a preset forced wind pressure difference is generated between the upper and lower surfaces of the bottom plate of the breeding container, driving the airflow to continuously and evenly penetrate the holes in the bottom plate.

[0030] 3. The oxygen concentration, carbon dioxide concentration, temperature and humidity in the breeding container are monitored in real time through the environmental monitoring components. When any parameter deviates from the preset range, the central controller issues a command to automatically adjust the air pressure and air volume or start the air handling unit to maintain the stability of the breeding environment.

[0031] IV. During the breeding process, some or all of the insect excrement will automatically separate and fall out of the breeding container through the holes due to airflow, its own weight, or the disturbance of insects.

[0032] 5. Collect the adult insects after the breeding is completed.

[0033] Preferably, the feed is pre-stirred before step one to introduce oxygen and increase the oxygen content in the feed.

[0034] Preferably, the temperature, moisture content, and nutrient ratio of the feed are controlled before step one to improve breeding efficiency.

[0035] Beneficial effects:

[0036] The core working logic of the device is "pressure stabilization and ventilation as the foundation, rotation and scraper as the core of operation, and automatic regulation as the guarantee": In terms of ventilation, a controllable airflow is formed through "air duct one (hollow rotating column) + air duct two (outer gap) + pressure equalization chamber", and dynamic pressure stabilization is achieved in conjunction with environmental monitoring, solving the problem of uneven ventilation in traditional breeding; In terms of operation, with the rotating column as the center, the container is fixed / rotated by electric pins, and the scraper linkage realizes the automation of "dispensing-cleaning-recycling", reducing manual intervention; In terms of environment, the heat insulation cover, air handling unit and manure collection plate work together to maintain the stability of the breeding environment and adapt to the growth needs of different insects (such as yellow mealworms and black soldier flies).

[0037] This patent proposes an "Insect Farming Unit, Farming Device, and Farming Method Based on Forced Controllable Wind Pressure Difference," which addresses core industry pain points in existing insect farming (especially large-scale black soldier fly farming), such as "limited density, unbalanced environmental control, difficulty in product separation, and excessive energy consumption." Through innovative structural design and process optimization, it achieves technological breakthroughs and upgrades industrial value, with the following beneficial effects: 1. High farming efficiency, and the equipment can be widely promoted; 2. Precise control of the farming environment, ensuring the stability of insect growth and product quality; 3. Low temperature control and energy consumption, allowing for year-round farming; 4. Controllable humidity of insect excrement, and mechanized separation; 5. Wide applicability, suitable for multiple fields.

[0038] This patented technology is not only applicable to the breeding of saprophytic insects such as black soldier flies, but can also be extended to earthworm breeding, microbial fermentation, and material storage (such as grain), demonstrating its wide applicability.

[0039] In summary, this application, through its core innovation of "forced controllable wind pressure difference," systematically addresses the technical and industrial pain points of existing insect farming from four dimensions: density enhancement, environmental control, cost optimization, and scenario expansion. It significantly improves the scale, automation, and greenness of farming, providing key technical support for the industrialization of the insect protein industry, and possesses significant technological innovation and industrial application value. Attached Figure Description

[0040] Figure 1 A three-dimensional cross-section diagram of the aquaculture device;

[0041] Figure 2 Schematic diagram of a partial structure of the aquaculture device Figure 1 ;

[0042] Figure 3 Schematic diagram of a partial structure of the aquaculture device Figure 2 ;

[0043] Figure 4 Schematic diagram of the overall structure of the aquaculture device Figure 1 ;

[0044] Figure 5 Schematic diagram of the overall structure of the aquaculture device Figure 2 ;

[0045] Figure 6 A schematic diagram of a device structure in which the pressure equalization chamber is located between the breeding container and the manure receiving plate, and the airflow passes through the holes from top to bottom;

[0046] Figure 7 This is a schematic diagram of a device structure where the equalizing chamber is located above the aquaculture container, and the airflow flows from bottom to top through the holes.

[0047] Figure 8 This is a schematic diagram of the aquaculture unit structure;

[0048] Figure 9 A schematic diagram of a breeding unit structure with an open cover at the top of the pressure equalization chamber at the bottom;

[0049] Figure 10 A schematic diagram of a culture unit structure with an air tube connected to an equalizing chamber located above the culture container;

[0050] Figure 11 This is a schematic diagram of the aquaculture unit structure, with the tracheal tube connected to the pressure equalization chamber located on the side of the aquaculture container.

[0051] In the diagram: 1. Breeding container; 11. Base plate; 12. Hole; 13. Manure collection plate; 131. Sealing component one; 132. Sealing component two; 14. Scraper one; 141. Scraper frame; 15. Scraper two; 16. Top sealing plate; 2. Pressure equalization component; 21. Pressure equalization cover; 3. Pressure equalization chamber; 4. Air duct; 40. Air duct one; 41. Air duct one; 42. Air duct two; 5. Main frame; 51. Outer cover; 6. Discharge channel; 61. Discharge sealing plate; 7. Rotating column; 71. Supporting disc; 74. Electric latch; 8. Conveyor; 91. Rotating base; 92. Rotating disc; 401. Top hood. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below. The present invention will be further described below with reference to the accompanying drawings.

[0053] Example 1:

[0054] An insect breeding unit based on pressure-stabilized ventilation includes a breeding container 1, a sealed pressure equalization chamber 3 located at the top and / or bottom of the breeding container, and a wind pressure regulating component connected to the pressure equalization chamber. The bottom plate 11 of the breeding container has a plurality of holes 12 penetrating through the bottom plate. The wind pressure regulating component is connected to the pressure equalization chamber and is used to control the formation of positive or negative pressure in the pressure equalization chamber 3, thereby forming a controllable forced wind pressure difference between the upper and lower surfaces of the bottom plate 11.

[0055] The above embodiment provides a basic unit. The aquaculture container 1 is a box with a square, round, or other similar shape, and its bottom plate 11 has a large number of evenly distributed circular holes 12. A pressure equalization component 2 is fixedly connected to the bottom or top of the aquaculture container 1. This component consists of a pressure equalization cover 21 and surrounding sealing strips, forming a pressure equalization chamber 3 with a relatively sealed bottom or top. A duct 4 is connected to the interface of the pressure equalization cover 21, and the other end of the duct 4 is connected to a variable frequency fan (not shown in the figure). The fan is controlled by a central controller. The fan can either draw air into or supply air to the pressure equalization chamber.

[0056] During operation, the central controller activates the fan to blow or exhaust air into the equalizing chamber 3, creating a stable positive or negative pressure. This positive or negative pressure ensures that the air pressure throughout the equalizing chamber 3 is essentially uniform, thus forming a uniform pressure field on the lower surface of the base plate 11. Driven by the pressure difference, air is forced to penetrate evenly and slowly upwards or downwards through all the holes 12 in the base plate 11, passing through the feed and insect layer inside the breeding container. This provides oxygen to the insects and removes moisture and waste gas. Simultaneously, some fine insect excrement falls through the holes 12 under the influence of the airflow and onto the manure collection plate 13 below. The air pressure difference can be adjusted according to the requirements of the breeding process.

[0057] By using a wind pressure regulating component to precisely adjust the wind pressure difference, the insects can adapt to different growth stages and their growth rate can be greatly improved.

[0058] The size design of the holes allows insect droppings to fall in over 90% of the way, reducing the frequency of manual cleaning and lowering cleaning costs.

[0059] Furthermore, for more flexible and efficient airflow control, we can install equalizing chambers at the top and bottom of the breeding container. By regulating these two chambers, airflow can pass through the holes from top to bottom or from bottom to top. During the breeding process, the airflow direction can alternate. For example, we can first use an upward airflow to prevent feed clumping and provide sufficient oxygen to the insects from below. Then, the airflow can move downwards to continue supplying oxygen while simultaneously blowing insect excrement down through the holes. This alternating upward and downward airflow creates a pulsed airflow, which is beneficial for separating insect excrement, enhancing the insects' disturbance of the feed, and improving the airflow's ability to control moisture and prevent clumping. The entire breeding unit can also be relatively sealed, resulting in a cleaner overall environment.

[0060] Example 2:

[0061] The difference from the above embodiments lies in the inclusion of a pressure equalization component 2 for forming the pressure equalization chamber. The pressure equalization component 2 includes a pressure equalization hood 21, a pressure equalization plate, or the base plate of the uppermost layer of aquaculture containers after stacking. The air pressure regulating assembly is connected to the pressure equalization component. The pressure equalization hood can be a regular square or circular hood, and more preferably, an inverted conical structure, to ensure uniform airflow distribution within the pressure equalization hood and avoid excessively high local air pressure.

[0062] When the breeding units are stacked, the bottom plate or manure collection plate of the upper layer after the breeding containers are stacked can be used as a pressure equalization component. The breeding containers of the upper and lower layers can be set at appropriate heights to form a stable airflow buffer space. Preferably, each layer of breeding units is connected to a separate wind pressure regulating component to ensure that the air pressure difference between each layer is balanced and controllable.

[0063] Of course, when stacking units, it is better to adopt the method of one pressure equalization cover for each breeding container and to set a manure collection plate at the bottom of the breeding container to reduce interference between the upper and lower breeding units.

[0064] Example 3:

[0065] The difference from the above embodiments lies in that one pressure equalization component 2 is connected to one or more aquaculture containers, and the multiple aquaculture containers are arranged horizontally and / or vertically spaced. One pressure equalization component can connect to multiple aquaculture containers for modular expansion. When multiple aquaculture containers are linked, the central controller controls the ventilation volume of each container by adjusting the opening of branch pipe valves based on environmental monitoring data within each container, ensuring the environmental parameters within each container are maintained. The design of a single pressure equalization component linking multiple containers allows for synchronous or independent control of multiple aquaculture containers. Sharing a single pressure equalization component among multiple containers reduces overall energy consumption compared to a single-container independent pressure equalization structure, meeting the energy-saving requirements of large-scale aquaculture.

[0066] Example 4:

[0067] The difference from the above embodiment lies in the size of the holes 12 on the base plate 11, which are arranged in a gradient from small to large from the center to the edge of the base plate; and / or, the distribution density of the holes 12 on the base plate 11 is arranged in a gradient from sparse to dense from the center to the edge of the base plate. The holes 12 located at the center of the base plate have smaller diameters and are more sparsely distributed; the closer to the edge of the base plate, the larger the diameter of the holes 12 and the denser their distribution. This gradient hole design compensates for airflow attenuation in the edge area, avoiding the problem of "concentrated airflow in the center and insufficient ventilation at the edge" caused by traditional uniform holes, ensuring a more consistent airflow penetration from the center to the edge, and achieving a very high level of environmental uniformity. This improves the overall ventilation uniformity of the base plate, reduces environmental differences within the container, and ensures uniform insect growth.

[0068] Example 5:

[0069] The difference from the above embodiment is that the bottom of the breeding container is also provided with a manure collection plate 13; or, the bottom plate of the pressure equalization component located at the bottom of the breeding container directly constitutes the manure collection plate 13. The manure collection plate at the bottom is used to automatically collect fallen manure. Furthermore, when the breeding container has a manure collection plate at the bottom, the manure collection plate can serve as the top plate of the pressure equalization component on the next layer of breeding containers when multiple breeding containers are stacked. The manure collection plate improves the efficiency of insect manure collection, reduces the frequency of maintenance of the pressure equalization chamber, keeps the ventilation channel clean, and ensures stable air pressure.

[0070] Example 6:

[0071] The difference from the above embodiments lies in that the wind pressure regulating component includes a fan, a duct 4, and a central controller. One end of the duct is connected to the equalizing chamber, and the central controller is electrically connected to the fan to control the fan's start / stop, direction, airflow, and operating time, thereby precisely regulating the wind pressure within the equalizing chamber. This achieves automated wind pressure regulation, improves operational convenience, reduces human error, and ensures stable environmental parameters. The wind pressure regulating component also includes an environmental monitoring component electrically connected to the central controller. The environmental monitoring component includes one or more sensors selected from a gas sensor, a temperature sensor, a humidity sensor, and a wind pressure sensor, all located within the equalizing chamber.

[0072] The wind pressure regulating component also includes an air handling unit, which is disposed at the air inlet and / or air outlet of the air duct and is used to perform dust removal, deodorization, temperature regulation or humidity regulation on the incoming or outgoing air.

[0073] The air pressure regulation component includes a fan, air ducts, and a central controller, and can be optionally equipped with an environmental monitoring component (sensors) and an air handling unit (dust removal, deodorization, etc.) to achieve intelligent closed-loop control. The central controller presets the optimal environmental parameter range for each stage of the breeding process. When the sensor detects that the oxygen concentration is below the set lower limit, the central controller automatically increases the fan speed, increases the positive or negative pressure of the equalization chamber, and enhances ventilation; when excessive humidity is detected, it can activate the dehumidification module or introduce dry air. This achieves fully automatic closed-loop intelligent control of the breeding environment.

[0074] Example 7:

[0075] The difference from the above embodiments lies in that the diameter of the hole is smaller than the initial characteristic size of the cultured insects or earthworms, but larger than the size of their excrement particles. The characteristic size refers to the approximate size of a specific insect, such as a black soldier fly, at a particular growth stage when it is introduced into the culture container. This design prevents insects from falling through the hole while ensuring the excrement falls smoothly, achieving a dual function of "ventilation + excrement separation." This ensures insect safety, improves excrement separation efficiency, and reduces losses during the culture process.

[0076] The design can divide the growth process of suitable insects or earthworms into several cyclical stages, and then use breeding containers with different aperture sizes according to different growth stages. Since insects such as black soldier flies are generally small in their egg stage and early larval stage, they can be raised in pots and then transferred to the breeding containers of this application for further cultivation.

[0077] A cylindrical insect rearing device based on pressure-stabilized ventilation includes the insect rearing unit described above. To improve rearing efficiency and save rearing space, the rearing unit can be stacked in multiple layers in the shape of a disc, ring, or near-ring to form a cylindrical or other specific shape. This improves rearing efficiency and allows for centralized air and pressure control. Of course, the cylindrical insect rearing device is not limited to the simple stacking of the rearing units described above; it can also be configured with a single air pressure regulating component that simultaneously controls the pressure equalization chambers on multiple rearing containers.

[0078] Example 8:

[0079] The difference from the above embodiments lies in that the cylindrical insect breeding device based on pressure-stabilized ventilation includes a main frame 5 located on the periphery, an insect breeding unit capable of pressure-stabilized ventilation, a feeding channel 6 for insects to be released and their excrement to be collected, and a rotating column 7 located at the center of the main frame. One or more breeding units are arranged around the rotating column within the main frame. Each insect breeding unit includes a breeding container 1 and a pressure equalization chamber 3 located at the top and / or bottom of the breeding container. A manure collection plate 13 is located below the breeding container, and several through-holes are formed on the bottom plate 11 of the breeding container. The bottom plate has holes 12 through which the top and bottom chambers of the breeding container are connected. At least one of the two chambers at the top and bottom of the breeding container is a pressure equalization chamber. The main frame is provided with two air ducts, which are respectively connected to the top and bottom chambers of the breeding container, so that the airflow flowing through the breeding container enters from one air duct, passes through the holes, and exits from the other air duct. At least one of the air ducts connecting to the pressure equalization chamber is connected to a pressure regulating component for controlling the air pressure in the pressure equalization chamber. During normal breeding, the feeding and ventilation channels are isolated from the two air ducts and cannot be interconnected to prevent uncontrollable airflow through the holes. Only when feeding insects or removing manure can some auxiliary components remove the insects or manure from the feeding and ventilation channels of the breeding device.

[0080] The aforementioned cylindrical insect rearing device comprises a main frame, cylindrical rearing units, a rotating column, and air ducts. The rearing units are enclosed by the rotating column, and a pressure equalization chamber is located at the top or bottom of the rearing container. The air ducts are divided into a central air duct and peripheral air ducts, connecting the top and bottom spaces of the rearing container respectively. A pressure regulating component connects to the air ducts, creating a pressure difference between the upper and lower spaces of the rearing container, allowing airflow to penetrate the bottom plate holes for ventilation. The rotating column can at least drive the rearing container to rotate, facilitating feed delivery and insect harvesting.

[0081] The aforementioned breeding unit is the "functional core module" of the cylindrical breeding device. Its number can be flexibly increased or decreased according to the scale of breeding (e.g., 2-3 units for small-batch breeding, 10-20 units for large-scale breeding). The breeding units are functionally connected and interconnected with the air pressure regulating components in parallel rather than in series. This ensures consistent ventilation and insect excrement separation functions in each unit, achieving "standardized breeding" and avoiding uneven insect growth due to unit differences. This is a key foundation for the large-scale application of the device.

[0082] The aforementioned device improves space utilization; the rotating structure combined with pressure-stabilizing ventilation reduces environmental differences and improves breeding efficiency.

[0083] Example 9:

[0084] The difference from the above embodiment lies in that the two air ducts are designated as air duct one (41) and air duct two (42). The rotating column is a hollow frame rotating column, with the central cavity of the rotating column serving as air duct one, and air duct two located on the periphery of the aquaculture container. Air duct one is directly connected to the equalization chamber of each aquaculture unit to ensure that the corresponding equalization chamber of each aquaculture container has a balanced and stable air pressure. Specifically, the center of the frame rotating column serves as air duct one for air control, and the periphery connected to the outside air serves as air duct two. By drawing or supplying air through air duct one to the equalization chambers located at the top and bottom of the aquaculture container, negative or positive pressure is created. Then, the outside airflow is injected into the equalization chamber through the holes in air duct two and flows out through air duct one, or conversely, the airflow supplied by air duct one enters through the holes and exits through air duct two.

[0085] The above design combines "structural components" with "functional air ducts", which simplifies the overall structure of the device and reduces the installation space for additional air ducts. The airflow can flow in both directions, such as positive pressure ventilation and negative pressure exhaust, and can flexibly adjust the airflow direction and intensity according to different stages of insect breeding, such as the larval stage requiring low wind speed and the adult stage requiring high ventilation, thus enhancing the adaptability of the device.

[0086] Example 10:

[0087] The difference from the above embodiments lies in that an outer cover 51 is provided around the main frame, and an air duct 2 is formed between the outer cover and the outer edge of the breeding unit. This embodiment optimizes the design of "air duct 2 being located around the breeding container" in Embodiment 9 by adding an "outer cover" to fix and seal the space of air duct 2. Previously, air duct 2 was an open outer space, which was easily affected by external airflow, resulting in unstable air pressure. The setting of the outer cover makes air duct 2 an independent airflow channel, ensuring that the airflow only flows along the "gap between the outer cover and the breeding unit", avoiding airflow diffusion or turbulence, further improving the effect of pressure stabilization and ventilation, and also having functions such as heat preservation and filtration.

[0088] Example 11:

[0089] The difference from the above embodiments lies in that the outer cover is an insulated cover. The outer cover is upgraded to an "insulated cover." Insect growth (such as larval development and adult reproduction) is sensitive to temperature. Traditional open-type farming is easily affected by fluctuations in external temperature, while the insulated cover can reduce heat exchange between the farming unit and the outside environment, maintaining the temperature inside the container within a suitable range (e.g., the suitable temperature for mealworms is 25-30℃). This design eliminates the need for additional heating / cooling equipment, achieving environmental temperature control through structural optimization, reducing energy consumption, and is particularly suitable for outdoor or factory farming scenarios with large temperature differences.

[0090] Example 12:

[0091] The difference from the above embodiment is that the outer edge of the manure receiving plate is connected to the bottom of the adjacent breeding container above it through a sealing member 131, and the bottom of the inner edge of the manure receiving plate is connected to the top of the adjacent breeding container below it through a sealing member 132, so that the air duct 2 is connected to the space chamber at the bottom of the breeding container, that is, the space chamber corresponding to the manure receiving plate, and the air duct 1 is connected to the space chamber at the top of the breeding container.

[0092] Alternatively, the outer edge of the manure receiving plate is connected to the adjacent breeding container below it via a sealing element 131, and the top of the inner edge of the manure receiving plate is connected to the bottom of the adjacent breeding container above it via a sealing element 132, thereby enabling the second air duct to communicate with the space chamber at the top of the breeding container, and the first air duct to communicate with the space chamber at the bottom of the breeding container.

[0093] This embodiment optimizes the dual functions of the "feces receiving plate," namely "supporting insect excrement and sealing the air duct." Through two sealing and connection methods, it achieves flexible adaptation between the air duct and the breeding container space. The feces receiving plate is no longer merely a "feces receiving component," but rather, through different connection methods of sealing components one and two, it controls the connection of air duct one and two to the top or bottom space of the breeding container. This allows for switching modes based on the insects' ventilation needs, such as different insects, different stages of insect life, or the needs of the breeding process. For example, ventilation can be directed from bottom to top to prevent feces accumulation and blockage of holes, or from top to bottom to accelerate feces separation. Simultaneously, the sealing components prevent airflow leakage from gaps between adjacent containers, ensuring independent and stable air pressure in each breeding unit, suitable for multi-layer large-scale breeding. Furthermore, the sealing components do not need to be absolutely sealed; a relative seal is sufficient. This is a result obtained through repeated practical testing by the applicant, demonstrating that a relative seal does not affect insect growth or the overall breeding method.

[0094] Example 13:

[0095] The difference from the above embodiment is that the breeding container and manure receiving plate are fan-shaped annular structures surrounding the rotating column 7, and the feeding channel 6 passes through the breeding container and manure receiving plate. An openable and closable feeding sealing plate 61 is provided at the bottom of the feeding channel.

[0096] This embodiment further optimizes space utilization by changing the traditional circular or square breeding containers and manure collection plates to a "fan-shaped ring structure." Since the device's center is a rotating column, the fan-shaped ring structure tightly surrounds the rotating column, eliminating gaps and maximizing the use of the annular space within the main frame. Simultaneously, the feeding channel runs through the fan-shaped breeding containers and manure collection plates, allowing insects and manure from each layer to be discharged directly through the same channel. This avoids the complex structure of traditional layered channel designs, reduces operational dead zones, and improves the efficiency of insect removal and manure cleaning, making it particularly suitable for multi-layered intensive breeding scenarios. Furthermore, feeding and insects can also be done through this feeding channel. The breeding container to be fed can be rotated around the rotating column to the feeding channel position before the feed and insects are added.

[0097] Example 14:

[0098] The difference from the above embodiment lies in that the breeding container and the manure receiving plate are respectively provided with scraper 14 and scraper 2 15, and scraper 1 and scraper 2 are arranged radially with the center of the rotating column as the center. The breeding container is provided with at least two scraper 1s on both sides of the feeding channel, which can isolate the breeding space of the breeding container from the feeding channel. That is, the scraper 1s on both sides of the feeding channel act as both scrapers and relatively sealed partitions, separating the space chamber on the bottom plate of the breeding container from the feeding channel to ensure that the chamber is relatively sealed and isolated from the feeding channel, thus ensuring stable airflow. Similarly, when the space chamber on the manure receiving plate needs to be used as a pressure equalization chamber separated from the feeding channel, at least two scraper 2s on both sides of the feeding channel are also required as partitions to separate the two spaces. Of course, this application does not exclude the possibility that the upper and lower space chamber edges of the breeding container corresponding to the feeding channel are separated from the feeding channel by sealing strips that can rotate with the rotating column, and the scrapers only need to be able to scrape off insects, insect excrement, or feed.

[0099] The first scraper can rotate relative to the breeding container, thereby scraping the insects, residual feed, and insect excrement on the bottom plate of the breeding container into the discharge channel for recycling. The second scraper can rotate relative to the manure receiving plate, thereby scraping the insect excrement on the manure receiving plate into the discharge channel for recycling. Each layer of breeding containers can rotate individually with the rotating column, or multiple layers of breeding containers can rotate simultaneously with the rotating column. This facilitates feeding at the beginning of breeding as well as during the breeding process and subsequent recycling.

[0100] More preferably, the breeding container is provided with multiple scrapers (first type) that can divide the space chambers on the breeding container into multiple independent chambers, and / or the manure receiving plate is provided with multiple scrapers (second type) that can divide the space chamber between the manure receiving plate and the breeding container into multiple independent chambers. The aforementioned independent chambers on the same layer can be relatively sealed and isolated from each other by scrapers (first type) or scrapers (second type), so that each independent chamber area can be subjected to forced airflow independently, ensuring that the air pressure in each independent chamber on the breeding container is as uniform as possible, reducing regional pressure differences, and improving breeding efficiency.

[0101] This embodiment focuses on "automated operation," solving the efficiency problem of insect harvesting and excrement removal by adding radial scrapers, "Scraper One and Scraper Two." Traditional manual cleaning requires opening the container, which easily disturbs the breeding environment. In this embodiment, the scrapers, centered on a rotating column, work in conjunction with the rotation of the breeding container in single or multiple layers to push the insects to both sides of the feeding channel before they fall into the channel. Simultaneously, Scraper Two scrapes the excrement on the receiving plate to the feeding channel for discharge, achieving automated operation through the linkage of "rotation + scraper." Furthermore, the flexible single / multi-layer rotation design allows for partial harvesting (e.g., harvesting only the adult insects on the upper layer) without affecting the breeding of other layers, improving operational flexibility.

[0102] Example 15:

[0103] The difference from the above embodiment is that the rotating column is provided with a supporting disc 71, and the inner bottom of the manure receiving plate is supported on the supporting disc via pulleys 711, while the outer end is connected to the main frame; the manure receiving plate can rotate relative to the rotating column, or it can be designed as a non-rotating structure. The outer bottom of the breeding container is rotatably and slidably connected to the main frame, and the inner bottom is rotatably and slidably supported on the manure receiving plate. The breeding container can also rotate rotatably between the pulleys and the main frame. Specifically, an annular supporting disc or supporting groove can be provided on the main frame corresponding to the breeding container to ensure that the breeding container can rotate relative to the main frame.

[0104] The "supporting disc + pulley" structural design ensures that the breeding container rotates with the rotating column. The supporting disc provides uniform support for the manure receiving plate, preventing tilting or deformation caused by uneven force on the manure receiving plate, ensuring that the air duct is sealed and leak-proof during rotation, and also making the sliding of the breeding container more stable. It is suitable for long-term, high-frequency rotation operations, such as daily feeding and regular manure cleaning.

[0105] Example 16:

[0106] The difference from the above embodiment is that the second scraper is fixed to the bottom of the aquaculture container and can rotate with the aquaculture container, and the main frame is provided with a scraper ring frame 141 that can be rotatably slidably, and the first scraper is provided at the bottom of the scraper ring frame.

[0107] This embodiment adjusts the fixing and linkage method of the scrapers, simplifying the drive structure and improving the consistency of action. On the one hand, scraper two is fixed to the breeding container, and scraper two rotates synchronously when the container rotates, achieving insect excrement cleaning without additional drive components, reducing equipment complexity. On the other hand, scraper one is uniformly supported by a "scraper frame," which can rotate and slide along the main frame, ensuring that the actions of all scrapers one are synchronized, avoiding incomplete cleaning caused by the deviation of a single scraper. This design makes the scraper operation more stable and maintenance more convenient, and is especially suitable for the unified control of scrapers in multi-layer breeding.

[0108] Example 17:

[0109] The difference from the above embodiments is that the rotating column or the supporting disc is provided with a plurality of electric pins 74 for respectively inserting the breeding container and the scraper frame.

[0110] The "electric latch" enables rapid fixing and separation of the breeding containers, scraper frames, and rotating column, effectively solving the problem of "rotation control precision." When rotation is not required (such as during normal breeding), the latch can be inserted to secure the container and frame, preventing accidental rotation due to airflow or vibration. When rotation is needed (such as during harvesting or manure removal), only the latch for that layer needs to remain stationary to rotate with the column; removing the latches for other layers will prevent the corresponding breeding containers / scraper frames from rotating. Furthermore, multiple latches can control different layers of breeding containers / scraper frames independently, enabling "independent layered operation," such as rotating only the containers of a specific layer for manure removal, further enhancing the device's operational flexibility and reducing interference with the overall breeding environment.

[0111] The main frame is equipped with electric latches for inserting and fixing the aquaculture container and the scraper frame.

[0112] An electric latch is added to the main frame, forming a double-fixed structure of "rotating column + main frame". The electric latch is fixed from the center (rotating column / supporting disc), while the other two are fixed from the periphery (main frame). This double fixation ensures the stability of the aquaculture container and scraper frame in a non-rotating state, which is particularly suitable for the load-bearing requirements of upper-level components in multi-layer aquaculture (such as when the upper container is full of feed and insects, preventing displacement due to weight). At the same time, the double-latch design also improves equipment safety, preventing accidental rotation caused by the failure of a single latch.

[0113] Example 19:

[0114] The difference from the above embodiments is that the air pressure regulating assembly includes an air duct 40 connected to the top of the air duct 1, a fan for drawing or supplying air to the air duct, and a main controller. The air duct 1 is sealed at the bottom of the entire device. When there is a space chamber above the breeding container that communicates with the air duct 2, the breeding container at the top is provided with a top sealing plate 16 that is isolated from the air duct 1, and the inner side of the breeding container is provided with a seal that is isolated from the air duct 1.

[0115] This embodiment clarifies the specific composition and working logic of the "wind pressure regulation component," solving the problem of "how to accurately control the airflow." The bottom of the air duct is sealed to ensure that airflow enters and exits only from the top air duct, preventing airflow leakage from the bottom and thus avoiding uncontrolled wind pressure. The fan provides the power for extraction or delivery, and the central controller can automatically adjust the fan power based on environmental monitoring data (such as temperature and humidity) to achieve precise control of wind pressure and airflow. The design of placing air duct one at the top of air duct one facilitates disassembly, assembly, and maintenance. Specifically, a top hood 401 can be installed on air duct one, and then air duct one (which functions as the air duct in the aquaculture unit) can be connected to the top hood, allowing the airflow entering air duct one to undergo secondary pressure equalization through the hood and the pressure equalization chamber. This ensures a more balanced airflow into each layer of aquaculture containers.

[0116] Example 20:

[0117] The difference from the above embodiments is that the upper and / or lower ends of the outer cover are connected to the outside; or the upper and / or lower ends of the outer cover are connected to a second air duct, which is connected to a fan and a main controller.

[0118] This embodiment offers two ventilation options for air duct two to suit the needs of different aquaculture scenarios. The first is a design that "directly connects to the outside world"; the second is a design that "connects air duct two + fan + central controller". This allows the upper and lower chambers of the aquaculture container to be used as adjustable pressure equalization chambers. In addition, it can be used with an air handling unit (such as filtration, heating, and humidification) to pre-treat the air entering air duct two, which is suitable for scenarios with poor external environments (such as high dust levels and large temperature differences) to ensure better air quality entering the aquaculture container.

[0119] Example 21:

[0120] The difference from the above embodiment is that the bottom of the rotating column 7 is provided with a rotating drive element. Specifically, a rotating base 91 can be provided at the bottom of the rotating column, and a rotating disk 92 connected to the rotating base by a bearing can be provided. The rotating disk can be connected to the drive element such as a motor by a belt or chain, and the rotating column is fixedly connected to the rotating disk.

[0121] Example 22:

[0122] The difference from the above embodiment is that a conveyor 8 is provided at the bottom of the main frame corresponding to the feeding channel. Adding a conveyor belt to the bottom of the main frame achieves seamless connection between "feeding and conveying". The conveyor can directly transport the fallen insects to the storage box and the insect excrement to the collection bag or processing equipment. The entire process is automated, reducing manual contact, improving hygiene standards and operational efficiency, and is especially suitable for large-scale mass production farming scenarios.

[0123] An insect rearing method based on pressure-stabilized ventilation, using either a cylindrical insect rearing device or an insect rearing unit based on pressure-stabilized ventilation, includes the following steps:

[0124] 1. Place insects and feed on the breeding containers;

[0125] 2. By using the wind pressure regulating component to form a stable negative pressure and / or positive pressure in the pressure equalization chamber, a preset forced wind pressure difference is generated between the upper and lower surfaces of the bottom plate of the breeding container, driving the airflow to continuously and evenly penetrate the holes in the bottom plate.

[0126] 3. The oxygen concentration, carbon dioxide concentration, temperature and humidity in the breeding container are monitored in real time through the environmental monitoring components. When any parameter deviates from the preset range, the central controller issues a command to automatically adjust the air pressure and air volume or start the air handling unit to maintain the stability of the breeding environment.

[0127] IV. During the breeding process, some or all of the insect excrement will automatically separate and fall out of the breeding container through the holes due to airflow, its own weight, or the disturbance of insects.

[0128] 5. Collect the adult insects after the breeding is completed.

[0129] The above method is a practical application of the functions of the aforementioned device, with "stable pressure ventilation" as its core, running through the entire process of "feeding-temperature control-separation-recycling" to form a closed-loop breeding logic. Step 2, "forced wind pressure difference," ensures uniform ventilation, solving the problems of oxygen deficiency and uneven temperature and humidity in traditional breeding. Step 3, "real-time monitoring and automatic control," enables intelligent environmental management, reducing manual intervention. Step 4, "automatic separation of insect excrement," utilizes airflow and gravity, eliminating the need for manual sifting and improving efficiency. The overall method balances "environmental stability" and "ease of operation," adapting to the needs of large-scale, standardized insect breeding (such as black soldier flies and mealworms, common economic insects).

[0130] Example 23:

[0131] The difference from the above embodiment is that the feed is pre-stirred before step one to introduce oxygen and increase its oxygen content. The temperature, moisture content, and nutrient ratio of the feed are controlled before step one to improve breeding efficiency.

[0132] This embodiment focuses on "feed quality optimization" by adding a "pre-mixing and aeration" step before feeding, which fundamentally addresses the issues of feed spoilage and insect nutrient absorption. Mixing and aeration replenishes the oxygen in the feed, and feed with high oxygen content can improve the growth rate of insects.

[0133] During operation, the electric latches 74 on the main frame and the electric latches on the rotating column / support disc are used to fix each layer of fan-shaped breeding containers and scraper frames in the preset positions, ensuring that the breeding containers are aligned with the manure receiving plate and that the feeding channel is isolated from the air duct to prevent subsequent ventilation leakage. The feeding channel is equipped with partitions on the top outer side, inner side, and part of both sides, and with relatively sealable components such as breeding containers, scraper one, and scraper two, thereby relatively sealing and separating the feeding channel from the space chamber above the breeding containers.

[0134] Feed quality can be improved by using external equipment to "stir and oxygenate", "control temperature / moisture content", and "optimize nutrient ratio" (such as high protein ratio during the larval stage).

[0135] Activate the rotation drive element at the bottom of the rotating column. Insert the inner electric latch on the target layer and release the outer latch. Insert the inner latches on the remaining layers. The rotating column drives the target layer's breeding container to rotate around the column, rotating the fan-shaped breeding container to the feeding channel position. The rotating column stops rotating, and the feeding component extends the feeding channel above the breeding container for feeding. During feeding, the electric latch keeps the container fixed to prevent rotational deviation, and the feed falls directly into the breeding container. After feeding is completed in this area of ​​the breeding container, release the electric latch and rotate the breeding container to the next area for feeding. After feeding is completed, fix the breeding container with the electric latch, then rotate the next target layer's breeding container and feed. Continue in this batch to complete the feeding of insects and feed.

[0136] A cover can be installed on the top of the equipment, with a closable feeding port on the cover. After feeding is completed, the feeding port is closed, the wind pressure regulating component is started, and the main controller controls the fan and air duct 1 connected to the top of air duct 1 (the central cavity of the hollow rotating column) to draw or blow air into air duct 1, so that the pressure equalization chamber 3 at the top / bottom of the breeding container forms a stable negative or positive pressure.

[0137] Airflow path: If the equalization chamber is at the bottom of the breeding container (air duct one connects to the equalization chamber), outside air enters from air duct two (the gap between the outer cover and the breeding unit), passes through the holes (12) in the bottom plate of the breeding container, penetrates the feed / insect body layer, enters the equalization chamber, and is discharged from air duct one; if reverse ventilation is required, it can be adjusted by turning the fan, and the airflow enters the equalization chamber from air duct one and is discharged through the holes and air duct two.

[0138] The equalizing chamber creates a uniform pressure field at the top / bottom of the container, and the gradient hole design of the bottom plate with "small center diameter and large edge diameter" compensates for the attenuation of the airflow at the edge, ensuring that the airflow penetrates the insect body layer evenly from the center to the edge, avoiding local hypoxia or excessive humidity.

[0139] Data Acquisition: The environmental monitoring components (gas sensor, temperature and humidity sensor, and wind pressure sensor) located in the equalization chamber collect real-time data on oxygen concentration, carbon dioxide concentration, temperature and humidity, and wind pressure in the equalization chamber of the aquaculture container, and transmit the data to the central controller.

[0140] During the breeding process, the airflow and the manure collection plate work together to automatically separate the insect excrement. During breeding, the insect excrement is separated under the action of three factors: the "airflow disturbance" when the airflow penetrates the holes, the "gravity" of the insect excrement itself, and the "disturbance" of the insect's movement, causing the insect excrement to fall through the holes in the bottom plate to the manure collection plate 13 below. The inner end of the manure collection plate is supported on the supporting disc 71 by pulleys, and the outer end is connected to the main frame to keep it in a horizontal state, temporarily storing the insect excrement and avoiding accumulation that would affect ventilation.

[0141] When insect excrement needs to be removed, the central controller releases the electric latch of the breeding container, causing the rotating column to rotate the container. The scraper 15 at the bottom of the container rotates synchronously with the container, scraping the insect excrement on the collection plate towards the "feeding channel 6" and clearing it out through the channel. It is then conveyed out via a conveyor belt. If only one layer needs cleaning, only the latch for that layer is unlocked, while the latches for other layers remain fixed.

[0142] When adult insects need to be collected, insert the electric pin that connects to the scraper frame above the corresponding layer. The rotating column drives the scraper frame of that layer to rotate, which in turn drives the scraper to clean the surface of the breeding container, scraping the adult insects into the feeding channel for adult insect collection.

[0143] Adult insects fall through the feeding channel to the conveyor, which then transports them to the storage box for recycling. During the recycling process, if it is necessary to pause a certain layer, the container can be fixed by reinserting the electric latch, making the operation flexible.

[0144] The core working logic of the device is "pressure stabilization and ventilation as the foundation, rotation and scraper as the core of operation, and automatic regulation as the guarantee": In terms of ventilation, a controllable airflow is formed through "air duct one (hollow rotating column) + air duct two (outer gap) + pressure equalization chamber", and dynamic pressure stabilization is achieved in conjunction with environmental monitoring, solving the problem of uneven ventilation in traditional breeding; In terms of operation, with the rotating column as the center, the container is fixed / rotated by electric pins, and the scraper linkage realizes the automation of "dispensing-cleaning-recycling", reducing manual intervention; In terms of environment, the heat insulation cover, air handling unit and manure collection plate work together to maintain the stability of the breeding environment and adapt to the growth needs of different insects (such as yellow mealworms and black soldier flies).

[0145] The "Insect Farming Unit, Farming Device, and Farming Method Based on Forced Controllable Wind Pressure Difference" proposed in this patent addresses the core pain points of existing insect farming (especially large-scale black soldier fly farming), such as "limited density, unbalanced environmental control, difficulty in product separation, and excessive energy consumption." Through innovative structural design and process optimization, it achieves technological breakthroughs and industrial value upgrades, with the following specific beneficial effects:

[0146] I. High profitability in aquaculture, and equipment that can be widely adopted:

[0147] In existing technologies, traditional natural ventilation or surface forced ventilation methods cannot achieve uniform penetration of the feed layer, resulting in limited stocking densities, such as below 120,000 heads / m², leading to low yield per unit area and becoming the core reason for high equipment costs. This patent, through a "sealed pressure equalization chamber + controllable air pressure difference" design, enables stable airflow to penetrate the entire stocking layer, effectively solving the problem of localized hypoxia under high density.

[0148] The applicant has conducted repeated black soldier fly larvae farming experiments using the aforementioned scheme. Experimental data verifies that, supported by this patented technology, the farming density can be stably increased to 20,000 larvae. The total processing capacity of feed such as a mixture of chicken manure and three-phase residue per unit area is 176 kg / m² over four days, with a fresh larvae yield of 27.2 kg / m². Compared to farming at 100,000 larvae / m² using a planar ventilation (no vertical penetration) method, processing the chicken manure and three-phase residue mixture requires a feed amount of 40 kg / m² and a yield of 6 kg / m². This represents a 4.4-fold increase in processing capacity and a 4.5-fold increase in fresh larvae yield. This significantly improves the space utilization rate and unit output efficiency of the farming equipment, and significantly reduces the amortization costs of site and equipment for large-scale farming. The benefits of the automated farming model far surpass those of the traditional ground-based farming model, making its widespread application possible.

[0149] II. Precisely regulate the breeding environment to ensure the stability of insect growth and product quality:

[0150] Existing technologies generally suffer from problems such as uneven temperature and humidity, and accumulation of harmful gases, resulting in poor synchronization of insect growth, large fluctuations in yield, and difficulty in separating insect excrement with a moisture content exceeding 55%. This patent achieves precise and controllable breeding environment through "pressure equalization chamber for stable air distribution + real-time environmental monitoring and control."

[0151] Temperature control: By coordinating the adjustment of air temperature and volume, the feed temperature is stably maintained at around 38℃ (the optimal growth temperature for black soldier flies), avoiding the problems of "low temperature (22℃) and inefficient feeding in the early stage, and high temperature (45℃) and heat stress" in the later stage in traditional techniques. The individual weight of the insects is stable at 101-105mg, and the yield is maintained at 15.5%-16.0%, with a fluctuation range of ≤3%. Yield refers to the proportion of feed converted into insect body weight after the insects have consumed it. It is affected by the feed ratio and also by the enzymatic reactions that occur during the transformation of the insects by temperature and humidity in the breeding process. In layman's terms, it is affected by the comfort of the insects' feeding and growth. The above fluctuation range is the fluctuation in yield caused by these factors.

[0152] Humidity and gas control: Forced penetration ventilation can quickly remove moisture and metabolic waste gas (ammonia, hydrogen sulfide) from the material layer, keeping the moisture content of insect excrement stable at 43%-46% (16%-22% lower than traditional technology). This not only prevents mold growth in the material layer, but also facilitates the automated screening of insect excrement and insect bodies, increasing the insect body yield by 10%-15% compared to traditional technology.

[0153] Third, temperature control requires low energy consumption, allowing for year-round farming:

[0154] Existing technologies result in high energy consumption for temperature control during year-round aquaculture, especially during periods of high and low temperatures. This patent achieves dual optimization of energy saving and automation through a "dynamic adaptation of wind pressure difference throughout the entire aquaculture cycle" design.

[0155] Energy consumption optimization: The wind pressure, air volume and air temperature are dynamically adjusted according to different breeding stages (feeding period, excretion period, drying period) and density, avoiding the energy waste of the traditional technology of "high power air supply throughout the whole cycle".

[0156] IV. Insect excrement allows for moisture control and mechanized separation:

[0157] Compared to planar ventilation, forced ventilation, combined with temperature control, can achieve high ventilation volume, high evaporation temperature, and long-term evaporation.

[0158] The airflow passes densely through the breeding layer, and the temperature is controlled at around 38 degrees Celsius. The breeding process is also the drying process of the insect excrement. Therefore, the drying effect of the insect excrement is good, and the moisture content can be controlled to meet the standard of easy sieving.

[0159] V. Wide applicability, suitable for multiple fields:

[0160] This patented technology is not only applicable to the breeding of saprophytic insects such as black soldier flies, but can also be extended to earthworm breeding, microbial fermentation, and material storage (such as grain), demonstrating its wide applicability.

[0161] Adaptable to different breeding scenarios: By adjusting the air pressure of the equalizing chamber and the size of the holes in the bottom plate, it can adapt to the growth needs of different insect stages (larvae, adults) and different species of insects, and realize "one equipment for multiple species" breeding.

[0162] Scalability and distributed compatibility: Supports horizontal splicing or vertical spacing of multiple breeding containers. A single pressure equalization chamber can match multiple breeding units, which not only meets the needs of large-scale centralized breeding, but also realizes distributed layout through modular design (to treat livestock and poultry manure and kitchen waste nearby), reducing raw material transportation costs.

[0163] Environmental benefits: Through the matching design of biological deodorization unit and dust removal equipment, odors and dust in the ventilation process can be effectively treated, avoiding pollution of the environment by livestock waste gas, which is in line with the industrial development trend of "green farming".

[0164] In summary, this patented technology, through its core innovation of "forced controllable wind pressure difference," systematically addresses the technical and industrial pain points of existing insect farming from four dimensions: density enhancement, environmental control, cost optimization, and scenario expansion. It significantly improves the scale, automation, and greening of farming, providing key technical support for the industrialization of the insect protein industry, and possesses significant technological innovation and industrial application value.

[0165] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A cylindrical insect rearing device based on pressure-stabilized ventilation, characterized in that: The system includes a main frame (5) located on the periphery, an insect breeding unit capable of pressure stabilization and ventilation, a feeding channel (6) for insects to be released and their excrement to be discharged, and a rotating column (7) located at the center of the main frame. The main frame contains one or more breeding units surrounding the rotating column. Each insect breeding unit includes a breeding container (1) and a pressure equalization chamber (3) located at the top and / or bottom of the breeding container. A manure collection plate (13) is located below the breeding container. The bottom plate (11) of the breeding container has several holes (12) penetrating through the bottom plate. The top and bottom spatial chambers of the breeding container are connected through the holes. At least one of the two spatial chambers at the top and bottom of the breeding container is a pressure equalization chamber. The main frame has two air ducts, which are respectively connected to the top and bottom spatial chambers of the breeding container, so that the airflow flowing through the breeding container enters from one air duct, passes through the hole, and exits from the other air duct. At least one of the two air ducts connected to the spatial chamber that serves as the pressure equalization chamber is connected to a pressure regulating component for controlling the air pressure in the pressure equalization chamber.

2. The cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 1, characterized in that: The two air ducts are air duct one (41) and air duct two (42), the rotating column is a hollow frame rotating column, the central cavity of the rotating column serves as air duct one, and air duct two is located on the periphery of the aquaculture container.

3. The cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 2, characterized in that: The main frame is provided with an outer cover (51), and an air duct is formed between the outer cover and the outer edge of the breeding unit.

4. The cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 3, characterized in that: The outer cover is an insulation cover.

5. The cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 3, characterized in that: The outer edge of the manure receiving plate is connected to the bottom of the adjacent breeding container above it via a sealing element one (131), and the bottom of the inner edge of the manure receiving plate is connected to the top of the adjacent breeding container below it via a sealing element two (132), thereby making air duct two connected to the space chamber at the bottom of the breeding container and air duct one connected to the space chamber at the top of the breeding container; or the outer edge of the manure receiving plate is connected to the adjacent breeding container below it via a sealing element one (131), and the top of the inner edge of the manure receiving plate is connected to the bottom of the adjacent breeding container above it via a sealing element two (132), thereby making air duct two connected to the space chamber at the top of the breeding container and air duct one connected to the space chamber at the bottom of the breeding container.

6. A cylindrical insect rearing device based on pressure-stabilized ventilation according to any one of claims 1-5, characterized in that: The breeding container and manure receiving plate are fan-shaped annular structures surrounding the rotating column (7), and the feeding channel (6) passes through the breeding container and manure receiving plate.

7. The cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 6, characterized in that: The breeding container and the manure receiving plate are respectively provided with scraper one (14) and scraper two (15), and scraper one and scraper two are arranged radially with the center of the rotating column as the center. The breeding container is provided with at least two scrapers one that are arranged on both sides of the feeding channel to isolate the breeding space of the breeding container from the feeding channel. Scraper one can rotate relative to the breeding container, and scraper two can rotate relative to the manure receiving plate. Each layer of the breeding container can rotate with the rotating column individually, or multiple layers of breeding containers can rotate with the rotating column simultaneously.

8. The cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 7, characterized in that: The breeding container is provided with multiple scrapers 1 that can divide the space chamber on the breeding container into multiple independent chambers, and / or the manure receiving plate is provided with multiple scrapers 2 that can divide the space chamber between the manure receiving plate and the breeding container into multiple independent chambers.

9. A cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 7, characterized in that: The rotating column is provided with a supporting disc (71), and the bottom of the inner end of the manure receiving plate is mounted on the supporting disc via pulleys, while the outer end is connected to the main frame; the bottom outer end of the breeding container is rotatably and slidably connected to the main frame, and the bottom inner end is rotatably and slidably mounted on the manure receiving plate.

10. A cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 7, characterized in that: The second scraper is fixed to the bottom of the aquaculture container and can rotate with the aquaculture container. The main frame is provided with a scraper ring frame (141) that can be rotated and slidably, and the first scraper is provided at the bottom of the scraper ring frame.

11. A cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 10, characterized in that: The rotating column or the supporting disc is provided with a plurality of electric pins (74) for respectively inserting the aquaculture container and the scraper frame.

12. The cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 9, characterized in that: The main frame is equipped with electric latches for inserting and fixing the aquaculture container and the scraper frame.

13. A cylindrical insect rearing device based on pressure-stabilized ventilation according to any one of claims 3-5, characterized in that: The air pressure regulating assembly includes an air duct (40) connected to the top of the air duct, a fan for drawing or supplying air to the air duct, and a main controller, with the bottom end of the air duct sealed.

14. The cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 13, characterized in that: The upper and / or lower ends of the outer cover are connected to the outside; or the upper and / or lower ends of the outer cover are connected to a second air duct, which is connected to a fan and a main controller.

15. A cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 1, characterized in that: The bottom of the rotating column (7) is provided with a rotating drive element.

16. The cylindrical insect breeding device based on pressure-stabilized ventilation according to claim 1, characterized in that: A conveyor (8) is provided at the bottom of the main frame corresponding to the material feeding channel.

17. An insect rearing unit based on pressure-stabilized ventilation, characterized in that: It is applied to the aforementioned cylindrical insect breeding device based on pressure stabilization and ventilation.

18. An insect rearing method based on pressure-stabilized ventilation, characterized in that: An insect farming method using any one of the cylindrical insect farming devices based on pressure-stabilized ventilation as described in claims 1-16 or the insect farming unit based on pressure-stabilized ventilation as described in claim 17, comprises the following steps:

1. Place insects and feed on the breeding containers; 2. By using the wind pressure regulating component to form a stable negative pressure and / or positive pressure in the pressure equalization chamber, a preset forced wind pressure difference is generated between the upper and lower surfaces of the bottom plate of the breeding container, driving the airflow to continuously and evenly penetrate the holes in the bottom plate.

3. The oxygen concentration, carbon dioxide concentration, temperature and humidity in the breeding container are monitored in real time through the environmental monitoring components. When any parameter deviates from the preset range, the central controller issues a command to automatically adjust the air pressure and air volume or start the air handling unit to maintain the stability of the breeding environment. IV. During the breeding process, some or all of the insect excrement will automatically separate and fall out of the breeding container through the holes due to airflow, its own weight, or the disturbance of insects.

5. Collect the adult insects after the breeding is completed.

19. The insect rearing method based on stable ventilation according to claim 18, characterized in that: Before step one, the feed is pre-stirred to introduce oxygen and increase the oxygen content in the feed.

20. The insect rearing method based on stable ventilation according to claim 18, characterized in that: Before step one, the temperature, moisture content, and nutrient ratio of the feed are controlled to improve breeding efficiency.

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