Water circulation type hermetia illucens cleaning and cooking integrated machine

Abstract

The application provides a water circulation type black soldier fly cleaning and steaming integrated machine, and relates to the technical field of black soldier fly processing. The machine comprises a cleaning system, a belt feeder and a steaming system arranged along a black soldier fly processing path in sequence. The cleaning system comprises a cleaning pool, and a cylindrical spiral coil pipe is fixed in the cleaning pool and is referred to as a cleaning spiral coil pipe. The cleaning spiral coil pipe has an inlet end at the top and an outlet end at the bottom. The outlet end of the cleaning spiral coil pipe is connected with a screen, and the screen is inclined downward. The steaming system comprises a hot water pool, and a mosquito incense type spiral coil pipe is fixed in the hot water pool and is referred to as a steaming spiral coil pipe. The cleaning, draining, transferring, steaming and discharging are continuously and automatically completed in a compact space. The overall equipment has a small land occupation area and a high insect body integrity rate. In addition, the insect body escape is prevented, and the fresh water consumption and waste water discharge are reduced.

Description

Technical Field

[0001] This invention relates to the field of black soldier fly processing technology, specifically to a water-circulating integrated machine for cleaning and cooking black soldier flies. Background Technology

[0002] Black soldier flies are a resource insect, and their larvae are rich in protein and fat. They are widely used in feed production, waste treatment and other fields. In the processing of black soldier flies, cleaning and steaming are two key steps. Cleaning is used to remove impurities attached to the surface of the insect body, while steaming is used to inactivate the insect body and denature the protein, which is convenient for subsequent drying or extraction.

[0003] Currently, the cleaning of black soldier flies is mostly done using chain plate water tank bubble cleaning, and the steaming of black soldier flies is mostly done using mesh belt steaming machines. The cleaned insects are transferred from the cleaning machine to the steaming machine. However, the existing cleaning machines and steaming machines generally have problems such as large footprint, high energy consumption, large water consumption, and serious insect escape. Summary of the Invention

[0004] To overcome the shortcomings of the existing technology, this invention proposes a water-circulating black soldier fly cleaning and cooking integrated machine, which includes a cleaning system, a belt feeder and a cooking system arranged sequentially along the black soldier fly processing path;

[0005] The cleaning system includes a cleaning tank, and a cylindrical spiral coil, referred to as the cleaning spiral coil, is fixed inside the cleaning tank.

[0006] The cleaning spiral coil has a feed end at the top and a discharge end at the bottom.

[0007] The discharge end of the cleaning spiral coil is connected to a screen, which is inclined downwards.

[0008] The cooking system includes a hot water tank, and a mosquito coil-shaped spiral coil, referred to as the cooking spiral coil, is fixed inside the hot water tank.

[0009] The cooking spiral coil has a feed end located in the middle and a discharge end located on the outer periphery, and a spiral feeder is provided below the discharge end of the cooking spiral coil.

[0010] The bottom end of the screen is located above the feed inlet of the belt feeder, the discharge outlet of the belt feeder is located directly above the feed end of the cooking spiral coil, and the discharge end of the cooking spiral coil is located directly above the feed inlet of the spiral feeder.

[0011] The cleaning tank is equipped with a cleaning water circulation system, and the hot water tank is equipped with a hot water circulation system.

[0012] To achieve the above objectives, the cleaning spiral coil is placed in the cleaning tank and the cooking spiral coil is placed in the hot water tank. Screens, belt feeders and spiral feeders are arranged sequentially along the processing path. At the same time, the cleaning tank and the hot water tank are equipped with independent water circulation systems, so that cleaning, draining, transfer, cooking and discharging can be completed continuously and automatically in a compact space. The overall equipment has a small footprint and a high insect integrity rate. It not only prevents insects from escaping, but also reduces clean water consumption and wastewater discharge.

[0013] The cleaning system uses a cylindrical spiral coil with variable pitch built into the cleaning tank. An inclined screen is installed at the discharge end. After the insect and water mixture enters the cleaning spiral coil in the cleaning tank, it is fully tumbled and rubbed under the combined action of the spiral and the cleaning water, resulting in uniform and thorough cleaning. The cleaning tank receives and contains the water and impurities overflowing from the cleaning spiral coil, preventing sewage from splashing out and keeping the working environment clean.

[0014] The cooking system uses a mosquito coil-shaped spiral tube built into the hot water tank. The feed end is located in the middle and the discharge end is located on the outer periphery. A screw feeder is configured to receive the discharge. The mosquito coil-shaped spiral tube allows the insects and hot water to move smoothly from the center to the outer periphery in a gentle spiral channel. The movement path is gentle, avoiding damage to the insect's skin caused by vertical falls and violent rolling. The insects have a high integrity rate after cooking. The entire coil is immersed in the hot water tank, and the tube is heated evenly in both directions. The central feed and outer periphery discharge path allows for precise control of the heating stroke and time, ensuring thorough inactivation and uniform protein denaturation. The discharge end falls directly into the feed port of the screw feeder below, receiving it smoothly and further protecting the fragile insects after cooking, meeting the requirements of subsequent drying or extraction processes.

[0015] Two independent water circulation systems recycle and treat the cleaning wastewater and cooking hot water respectively, ensuring dedicated water for each system and preventing interference between them. The cleaning water circulation system can remove impurities from the water and reuse it for cleaning, while the hot water circulation system maintains the water temperature required for cooking and recovers heat energy. The overall water and energy consumption of the system is greatly reduced, achieving water-saving and energy-efficient clean production.

[0016] Furthermore, the pitch of the cleaning spiral coil varies along its axial direction, and the pitch at the feed end and the discharge end is greater than the pitch in the middle.

[0017] Furthermore, the pitch of the cooking spiral coil is not less than 18mm and not more than 4 times the pipe diameter.

[0018] Furthermore, the cleaning spiral coil has drainage holes spaced apart on the pipe wall near the discharge end for pre-dehydration.

[0019] Furthermore, the screw feeder includes a horizontally placed sleeve, and a plurality of through holes are spaced apart on the lower part of the sleeve wall.

[0020] Furthermore, a partition is fixed inside the hot water tank, dividing the hot water tank into a heating chamber and a discharge chamber; the cooking spiral coil is fixed in the heating chamber, and the discharge end of the cooking spiral coil extends through the partition into the discharge chamber; the screw feeder is located in the discharge chamber, and the discharge end of the screw feeder extends through the tank wall of the hot water tank; the screw feeder is sealed to the partition.

[0021] Furthermore, the feed end of the cleaning spiral coil adopts a V-shaped tube, the bottom end of which is connected to the inner cavity of the cleaning spiral coil, and the top end of which has two branch pipes, namely a first water inlet pipe and a first insect inlet pipe; the feed end of the cooking spiral coil adopts another V-shaped tube, the bottom end of which is connected to the inner cavity of the cooking spiral coil, and the top end of which has two branch pipes, namely a second water inlet pipe and a second insect inlet pipe; both the first and second insect inlet pipes are equipped with vertically arranged spiral feeding devices.

[0022] Furthermore, the cleaning water circulation system includes a cleaning water pump located outside the cleaning tank, and a drain outlet is provided on the lower right side of the inner side of the cleaning tank. The drain outlet of the cleaning tank, the cleaning water pump, and the first inlet pipe of the cleaning spiral coil are connected in sequence to form a cleaning water circulation loop. The hot water circulation system includes a hot water pump located outside the hot water tank, and another drain outlet is provided on the lower right side of the inner side of the discharge chamber. The drain outlet of the discharge chamber, the hot water pump, and the second inlet pipe of the cooking spiral coil are connected in sequence to form a hot water circulation loop.

[0023] Furthermore, the bottom of both the washing tank and the discharge chamber is an inclined surface, which gradually slopes downward from right to left, and a sewage pump is connected to the lowest point of the bottom of both the washing tank and the discharge chamber.

[0024] Furthermore, a heating device is provided below the hot water pool, which is an electric heating tube or a steam heating coil.

[0025] In summary, this water-circulating soldier fly cleaning and cooking integrated machine has the following beneficial effects:

[0026] (1) The water-circulating integrated machine for cleaning and cooking of horseflies has a cleaning spiral coil in the cleaning tank and a cooking spiral coil in the hot water tank. Screens, feeders and spiral feeders are arranged in sequence along the processing path. At the same time, the cleaning tank and the hot water tank are equipped with independent water circulation systems, so that cleaning, draining, transfer, cooking and discharge can be completed continuously and automatically in a compact space. The overall equipment occupies a small area and has a high rate of complete insect body. It not only prevents the insect body from escaping, but also reduces the consumption of clean water and the discharge of wastewater.

[0027] (2) The water-circulating type integrated machine for cleaning and cooking horseflies has a partition in the hot water tank to form an independent heating chamber and a discharge chamber. The feed end of the screw feeder is sealed to the partition, which realizes complete structural isolation between the heating and discharge areas. The heating chamber can form a stable high-temperature water bath environment. The cooked worms are directly fed into the discharge chamber through the partition from the discharge end of the screw coil and are then sent out by the screw feeder. The entire discharge process is completed in the independent discharge chamber. All the residual hot water that detaches from the surface of the worms is collected in the discharge chamber. This facilitates the recovery of heat and water by the hot water circulation system and also prevents moisture and hot steam from overflowing to the outside of the equipment, keeping the working environment clean and dry.

[0028] (3) The water-circulating integrated machine for cleaning and cooking of horseflies has a drain outlet at the bottom of the cleaning tank that draws out the wastewater after cleaning. After being pressurized by the cleaning water pump, the wastewater is sent back to the first water inlet pipe of the cleaning spiral coil, where it mixes with the insects and enters the cleaning process again, thereby improving the water reuse rate and effectively reducing the consumption of clean water. Similarly, the drain outlet at the bottom of the discharge chamber collects the hot water separated after cooking and sends it back to the feed end of the cooking spiral coil via a hot water pump. This not only recovers the waste heat of the hot water to reduce heating energy consumption, but also realizes the recycling of hot water. The two sets of circulation loops operate independently, with dedicated water for dedicated use and no interference between them. The water temperature and water quality remain stable, which greatly reduces the overall water consumption and energy consumption of the equipment and realizes water-saving and energy-saving clean production. Attached Figure Description

[0029] The invention will now be further described and explained with reference to the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of the overall structure of the preferred embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram illustrating the structure of a spiral coil for cleaning, representing the preferred embodiment of the present invention.

[0032] Figure 3 This is a schematic diagram illustrating the structure of the steaming spiral coil, which is the preferred embodiment of the present invention.

[0033] Reference numerals: 1. Washing tank; 2. Washing spiral coil; 3. Screen; 4. Hot water tank; 5. Cooking spiral coil; 6. Spiral feeder; 7. Drain hole; 8. Baffle; 9. Heating chamber; 10. Discharge chamber; 11. First water inlet pipe; 12. First insect inlet pipe; 13. Second water inlet pipe; 14. Second insect inlet pipe; 15. Spiral feeding device; 16. Inclined surface. Detailed Implementation

[0034] The technical solution of the present invention will be more clearly and completely explained below with reference to the accompanying drawings and through the description of preferred embodiments of the present invention.

[0035] like Figures 1-3 As shown, the preferred embodiment of the present invention provides a water-circulating black soldier fly cleaning and cooking integrated machine, which includes a cleaning system, a belt feeder and a cooking system arranged sequentially along the black soldier fly processing path;

[0036] The cleaning system includes a cleaning tank 1, and a cylindrical spiral coil, referred to as the cleaning spiral coil 2, is fixed inside the cleaning tank 1.

[0037] The cleaning spiral coil 2 has a feed end at the top and a discharge end at the bottom.

[0038] A screen 3 is connected to the discharge end of the cleaning spiral coil 2, and the screen 3 is inclined downward.

[0039] A screen 3 is connected to the discharge end of the cleaning spiral coil 2, and the screen 3 is inclined downward.

[0040] The cooking spiral coil 5 has a feed end located in the middle and a discharge end located on the outer periphery, and a spiral feeder 6 is provided below the discharge end of the cooking spiral coil 5.

[0041] The bottom end of the screen 3 is located above the feed inlet of the belt feeder, the discharge outlet of the belt feeder is located directly above the feed end of the cooking spiral coil 5, and the discharge end of the cooking spiral coil 5 is located directly above the feed inlet of the spiral feeder 6.

[0042] The cleaning tank 1 is equipped with a cleaning water circulation system, and the hot water tank 4 is equipped with a hot water circulation system.

[0043] In the above design, the cleaning spiral coil 2 is placed in the cleaning tank 1, and the cooking spiral coil 5 is placed in the hot water tank 4. The screen 3, the feeder and the spiral feeder 6 are arranged in sequence along the processing path. At the same time, the cleaning tank 1 and the hot water tank 4 are equipped with independent water circulation systems, so that cleaning, draining, transfer, cooking and discharging can be completed continuously and automatically in a compact space. The overall equipment occupies a small area and has a high insect integrity rate. It not only prevents insects from escaping, but also reduces the consumption of clean water and wastewater discharge.

[0044] The cleaning system uses a cylindrical spiral coil with variable pitch built into the cleaning tank 1, and an inclined screen 3 is installed at the discharge end. After the insect and water mixture enters the cleaning spiral coil 2 in the cleaning tank 1, it is fully tumbled and rubbed under the combined action of the spiral push and the cleaning water, so that the cleaning is uniform and thorough. The cleaning tank 1 receives and contains the water and impurities overflowing from the cleaning spiral coil 2, avoids sewage splashing, and keeps the working environment clean.

[0045] The cooking system uses a mosquito coil-shaped spiral tube built into the hot water tank 4. The feed end is located in the middle and the discharge end is located on the outer periphery. A spiral feeder 6 is configured to receive the discharge. The mosquito coil-shaped spiral tube allows the insects and hot water to move smoothly from the center to the outer periphery in a gentle spiral channel. The movement path is gentle, avoiding damage to the insect's skin caused by vertical falls and violent rolling. The insects have a high integrity rate after cooking. The entire coil is immersed in the hot water tank 4, and the tube is heated evenly in both directions. The central feed and outer periphery discharge path makes the heating stroke and time precisely controllable, ensuring thorough inactivation and uniform protein denaturation. The discharge end falls directly to the feed port of the spiral feeder 6 below, receiving it smoothly and further protecting the fragile insects after cooking, meeting the requirements of subsequent drying or extraction processes.

[0046] Two independent water circulation systems recycle and treat the cleaning wastewater and cooking hot water respectively, ensuring dedicated water for each system and preventing interference between them. The cleaning water circulation system can remove impurities from the water and reuse it for cleaning, while the hot water circulation system maintains the water temperature required for cooking and recovers heat energy. The overall water and energy consumption of the system is greatly reduced, achieving water-saving and energy-efficient clean production.

[0047] like Figure 2 As shown, the pitch of the cleaning spiral coil 2 varies along its axial direction, with the pitch at the feed end and discharge end being greater than that in the middle. This variable pitch design, with a large pitch at both ends and a small pitch in the middle, allows the feed section to quickly pull in materials to avoid clogging, the cleaning section to slow down the advance and extend the residence time to enhance the cleaning effect, and the discharge section to accelerate again to prevent compression and accumulation. This design balances smooth feeding, deep cleaning, and rapid discharge. The screen 3 connected to the discharge end of the cleaning spiral coil 2 completes the initial separation of insects and most of the cleaning water during discharge.

[0048] like Figure 3 As shown, the pitch of the cooking spiral coil 5 is not less than 18 mm and not more than 4 times the pipe diameter. A pitch of not less than 18 mm ensures sufficient channel space for black soldier fly larvae to flow with hot water within the coil, preventing larvae from getting stuck, accumulating, or blocking the spiral channels, thus ensuring smooth material flow. A pitch not exceeding 4 times the pipe diameter prevents excessively large pitches from causing excessively fast flow rates and shallow immersion depths in the insect-water mixture within the pipe, ensuring stable and uniform immersion and heating of the larvae in all sections of the pipe. This avoids problems such as uneven cooking degrees and insufficient heating of some larvae due to excessively large pitches, thereby ensuring thorough inactivation and uniform protein denaturation, and improving the consistency of cooking quality.

[0049] On the pipe wall near the discharge end of the cleaning spiral coil 2, there are spaced-apart drain holes 7 for pre-dehydration. Multiple drain holes 7 on the pipe wall near the discharge end allow some of the cleaning water mixture to be pre-discharged from the holes before it enters the screen 3 at the end of the cleaning spiral coil 2. This pre-dehydration reduces the drainage load on the subsequent inclined screen 3, making the separation of insects and water on the screen 3 faster and more thorough. Simultaneously, the pre-separated water can naturally fall into the washing tank 1 below, facilitating timely recovery by the cleaning water circulation system. This reduces the amount of water carried by the insects into the feeder and subsequent cooking process, helping to maintain stable hot water concentration and temperature in the cooking section.

[0050] like Figure 3 As shown, the screw feeder 6 includes a horizontally placed sleeve with multiple through holes spaced apart at the bottom of the sleeve wall. The through holes at the bottom of the sleeve of the screw feeder 6 allow residual hot water adhering to and carried by the cooked insects to drain synchronously from the bottom of the sleeve along the conveying path during the screw feeding process. This separates the insects from the conveyed water, reducing the moisture content of the discharged insects and alleviating the moisture load for subsequent drying or temporary storage. It also facilitates the centralized recovery of the separated hot water, enabling heat energy reuse in conjunction with a hot water circulation system, further reducing the overall energy consumption of the equipment.

[0051] A partition 8 is fixed inside the hot water tank 4, which divides the hot water tank 4 into a heating chamber 9 and a discharge chamber 10. The cooking spiral coil 5 is fixed inside the heating chamber 9, and the discharge end of the cooking spiral coil 5 extends through the partition 8 into the discharge chamber 10. The screw feeder 6 is located inside the discharge chamber 10, and the discharge end of the screw feeder 6 extends through the tank wall of the hot water tank 4. The screw feeder 6 is sealed to the partition 8.

[0052] A partition 8 is installed in the hot water tank 4 to form an independent heating chamber 9 and a discharge chamber 10. The feed end of the screw feeder 6 is sealed to the partition 8, which realizes complete structural isolation between the cooking heating area and the discharge area. The heating chamber 9 can form a stable high-temperature water bath environment. The cooked insects are directly fed into the discharge chamber 10 through the partition 8 from the discharge end of the screw coil and are then discharged by the screw feeder 6. The entire discharge process is completed in the independent discharge chamber 10. All the residual hot water detached from the surface of the insects is collected in the discharge chamber 10, which facilitates the recovery of heat and water by the hot water circulation system and prevents moisture and hot steam from overflowing to the outside of the equipment, keeping the working environment clean and dry.

[0053] The feed end of the cleaning spiral coil 2 uses a V-shaped pipe, with the bottom end of the V-shaped pipe connected to the inner cavity of the cleaning spiral coil 2. The top end of the V-shaped pipe has two branch pipes, namely the first water inlet pipe 11 and the first insect inlet pipe 12. The feed end of the cooking spiral coil 5 uses another V-shaped pipe, with the bottom end of the other V-shaped pipe connected to the inner cavity of the cooking spiral coil 5. The top end of the other V-shaped pipe has two branch pipes, namely the second water inlet pipe 13 and the second insect inlet pipe 14. Both the first insect inlet pipe 12 and the second insect inlet pipe 14 are equipped with vertically arranged spiral feeding devices 15. Water and insects are introduced into the two branches of the V-shaped pipe, respectively. The spiral feeding device 15 controls the insect entry rate to ensure that the insects continuously and evenly enter the cleaning spiral coil 2 or the cooking spiral coil 5 and mix with the water flow, thereby improving the smoothness of feeding and the stability of the process, and ensuring continuous operation of the entire cleaning and cooking process.

[0054] The cleaning water circulation system includes a cleaning water pump located outside the cleaning tank 1. A drain outlet is located on the lower right side of the inner side of the cleaning tank 1. The drain outlet of the cleaning tank 1, the cleaning water pump, and the first inlet pipe 11 of the cleaning spiral coil 2 are connected in sequence to form a cleaning water circulation loop. The hot water circulation system includes a hot water pump located outside the hot water tank 4. Another drain outlet is located on the lower right side of the inner side of the discharge chamber 10. The drain outlet of the discharge chamber 10, the hot water pump, and the second inlet pipe 13 of the cooking spiral coil 5 are connected in sequence to form a hot water circulation loop.

[0055] The wastewater from the bottom of the cleaning tank 1 is collected and discharged, then pressurized by the cleaning water pump and returned to the first inlet pipe 11 of the cleaning spiral coil 2. It mixes with the insects and re-enters the cleaning process, improving the water reuse rate and effectively reducing the consumption of clean water. Similarly, the hot water separated after cooking is collected from the bottom of the discharge chamber 10 and returned to the feed end of the cooking spiral coil 5 by the hot water pump. This not only recovers the waste heat of the hot water to reduce heating energy consumption, but also realizes the recycling of hot water. The two sets of circulation loops operate independently, with dedicated water for dedicated use and no interference between them. The water temperature and water quality remain stable, which greatly reduces the overall water and energy consumption of the equipment and realizes water-saving and energy-saving clean production.

[0056] Both the bottom of the washing tank 1 and the discharge chamber 10 are inclined surfaces 16, which gradually slope downwards from right to left. A sewage pump is connected to the lowest point of the bottom of both the washing tank 1 and the discharge chamber 10. By designing the bottom of the washing tank 1 and the bottom of the discharge chamber 10 as inclined surfaces 16 and installing sewage pumps at their respective lowest points, heavy impurities such as mud, sand, and debris that settle or separate during the washing and cooking process can naturally converge to the lowest point under gravity and be discharged in a timely manner by the sewage pumps.

[0057] This design prevents impurities from accumulating at the bottom of the pool and chamber, maintaining the cleanliness of the cleaning water and hot water circulation media, reducing the risk of pipe and equipment blockage, and lowering the frequency and labor intensity of manual cleaning and maintenance. Simultaneously, the centralized wastewater discharge method allows for the concentrated separation of solids in the wastewater at the discharge outlet, facilitating subsequent water recycling treatment or achieving compliant discharge, further enhancing the overall continuous operation capability and clean production level of the equipment.

[0058] A heating device is installed at the bottom of the hot water tank 4. The heating device adopts an electric heating tube or a steam heating coil. The electric heating tube or steam heating coil is directly installed at the bottom of the hot water tank 4. The heat source is immersed in the water. The heat is transferred from bottom to top by natural convection. The heating is uniform and the heat exchange efficiency is high, which can quickly increase and stably maintain the temperature of the water in the hot water tank 4.

[0059] During use, in the preparation stage, the cleaning spiral coil 2 is positioned above the liquid surface of the cleaning tank 1, and cooking water is injected into the heating chamber 9 of the hot water tank 4. The liquid level in the heating chamber 9 is higher than the liquid level in the discharge chamber 10. The cooking spiral coil 5 is embedded in the liquid surface of the heating chamber 9. The second water inlet pipe 13 and the second insect inlet pipe 14 are positioned above the liquid surface. The spiral feeder 6 is positioned above the liquid surface in the discharge chamber 10. The heating device at the bottom of the hot water tank 4 is activated to heat the water in the hot water tank 4 to the preset cooking temperature and maintain a constant temperature. At the same time, the cleaning water pump of the cleaning water circulation system and the hot water pump of the hot water circulation system are activated to put the two water circulation loops into the standby state.

[0060] The cleaning spiral coil 2 is equipped with a cleaning water supply system, which includes a cleaning water tank and a water pump. The cleaning water tank, the water pump, and the first inlet pipe 11 are connected in sequence. The cooking spiral coil 5 is equipped with a hot water supply system, which includes a hot water discharge pipe located in the heating chamber 9 and a hot water delivery pump. The hot water discharge pipe, the hot water delivery pump, and the second inlet pipe 13 are connected in sequence.

[0061] Black soldier fly larvae are introduced through the first inlet pipe 12, and cleaning water is introduced through the first water inlet pipe 11. Both enter the feed end of the cleaning spiral coil 2. After the insect-water mixture enters the cleaning spiral coil 2 from the top, it tumbles and slides down the cylindrical spiral coil wall. Because the cleaning spiral coil 2 adopts a variable pitch design with large pitch at both ends and small pitch in the middle, the material in the feed section is quickly pulled in to avoid blockage. The pushing speed in the cleaning section slows down to allow the insects to tumble and rub fully. The discharge section accelerates the discharge to prevent squeezing and accumulation. Impurities attached to the surface of the insects are washed away by the water flow. During the brush peeling process, when the insects move to the section of the spiral coil 2 near the discharge end, the wastewater flows into the cleaning tank 1 through the drain hole 7. The insects continue to descend and fall onto the inclined screen 3 through the discharge end. As the insects roll down the inclined surface of the screen 3, they are further separated from the residual cleaning water. The separated water falls into the cleaning tank 1, which is equipped with a discharge port. The filter screen 3 passes through the discharge port, and the cleaned and drained insects fall from the bottom of the screen 3 into the feed port of the belt feeder. The liquid level in the cleaning tank 1 is always lower than the discharge port.

[0062] Wastewater in cleaning tank 1 is drawn out from the drain outlet of cleaning tank 1. The pipeline is equipped with a filter element to filter the returned cleaning water. After being pressurized by the cleaning water pump, it is sent back to the first inlet pipe 11 along the cleaning water circulation loop. It is then supplied with water in conjunction with the cleaning water supply system and mixed with fresh insects to enter the cleaning process again, realizing the recycling of cleaning water. Heavy impurities such as mud and sand that are deposited at the lowest point of the bottom of cleaning tank 1 are periodically discharged by the sewage pump.

[0063] The belt conveyor transports the cleaned and drained insects upwards and places them into the second inlet pipe 14 of the cooking spiral coil 5. Simultaneously, a hot water supply system supplies hot water to the second supply pipe. The insects and hot water mix within the cooking spiral coil 5, which is a mosquito coil-shaped spiral coil with the inlet end at the center and the outlet end at the outer periphery. The insect-water mixture enters from the center and moves smoothly from the inside to the outside along the spiral channel. Because the entire coil is immersed in the high-temperature hot water of the heating chamber 9, the inner and outer walls of the coil are heated evenly in both directions. The insects are gradually heated to the inactivation temperature and continuously heated during the gentle flow, resulting in thorough protein denaturation. The movement path is gentle, avoiding damage to the insect skin caused by vertical falls and violent tumbling, resulting in a high rate of intact insects after cooking.

[0064] After the insects have been cooked, they travel along the cooking spiral coil 5 to the outer discharge end, pass through the partition 8 and enter the discharge chamber 10. They then fall directly into the feed inlet of the spiral feeder 6 located in the discharge chamber 10. Since the feed end of the spiral feeder 6 is sealed to the partition 8, the high-temperature hot water in the heating chamber 9 is completely isolated from the discharge chamber 10 to prevent water from flowing through. The spiral feeder 6 transports the cooked insects to the outside of the hot water tank 4. During the transport process, the through holes at intervals at the bottom of the sleeve allow the residual hot water adhering to and carried on the surface of the insects to drain out along the transport path and fall into the discharge chamber 10, reducing the moisture content of the discharged insects.

[0065] Hot water in the discharge chamber 10 is drawn out through the drain outlet of the discharge chamber 10, pressurized by the hot water pump, and then sent back to the second water inlet pipe 13 along the hot water circulation loop. The pipe is also equipped with a filter element, which mixes with fresh hot water and enters the cooking process again, realizing the recycling of hot water and heat recovery. Debris and other impurities deposited at the lowest point of the discharge chamber 10 are periodically discharged by the sewage pump.

[0066] The above-described specific embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Various modifications, substitutions, and improvements made by those skilled in the art to the technical solutions of the present invention based on the provided textual description and drawings, without departing from the design concept and spirit of the present invention, should all fall within the scope of protection of the present invention. The scope of protection of the present invention is determined by the claims.

Claims

1. A water-circulating type integrated machine for cleaning and cooking body flies, characterized in that, It includes a cleaning system, a belt feeder, and a cooking system arranged sequentially along the black soldier fly processing path; The cleaning system includes a cleaning tank (1), and a cylindrical spiral coil, called the cleaning spiral coil (2), is fixed inside the cleaning tank (1). The cleaning spiral coil (2) has a feed end at the top and a discharge end at the bottom. The discharge end of the cleaning spiral coil (2) is connected to a screen (3), which is inclined downwards. The cooking system includes a hot water tank (4), and a mosquito coil-shaped spiral coil, called the cooking spiral coil (5), is fixed inside the hot water tank (4). The cooking spiral coil (5) has a feed end located in the middle and a discharge end located on the outer periphery, and a spiral feeder (6) is provided below the discharge end of the cooking spiral coil (5). The bottom end of the screen (3) is located above the feed inlet of the belt feeder, the discharge outlet of the belt feeder is located directly above the feed end of the cooking spiral coil (5), and the discharge end of the cooking spiral coil (5) is located directly above the feed inlet of the spiral feeder (6). The cleaning pool (1) is equipped with a cleaning water circulation system, and the hot water pool (4) is equipped with a hot water circulation system.

2. The water-circulating type integrated machine for cleaning and cooking body flies according to claim 1, characterized in that, The pitch of the cleaning spiral coil (2) varies along its axial direction, and the pitch at the feed end and the discharge end is greater than the pitch at the middle.

3. The water-circulating type integrated machine for cleaning and cooking river flies according to claim 1, characterized in that, The pitch of the cooking spiral coil (5) is not less than 18 mm and not more than 4 times the diameter of the tube.

4. The water-circulating type integrated machine for cleaning and cooking river flies according to claim 1, characterized in that, The cleaning spiral coil (2) has drainage holes (7) spaced apart on the pipe wall near the discharge end for pre-dehydration.

5. The water-circulating type integrated machine for cleaning and cooking river flies according to claim 1, characterized in that, The screw feeder (6) includes a horizontally placed sleeve, and multiple through holes are spaced apart on the lower part of the sleeve wall.

6. The water-circulating type integrated machine for cleaning and cooking river flies according to claim 1, characterized in that, A partition (8) is fixed inside the hot water tank (4), which divides the hot water tank (4) into a heating chamber (9) and a discharge chamber (10). The cooking spiral coil (5) is fixed in the heating chamber (9). The discharge end of the cooking spiral coil (5) extends through the partition (8) into the discharge chamber (10). The spiral feeder (6) is located in the discharge chamber (10), and the discharge end of the spiral feeder (6) passes through the wall of the hot water tank (4). The screw feeder (6) is sealed to the partition (8).

7. The water-circulating type integrated machine for cleaning and cooking river flies according to claim 1, characterized in that, A partition (8) is fixed inside the hot water tank (4), which divides the hot water tank (4) into a heating chamber (9) and a discharge chamber (10). The cooking spiral coil (5) is fixed in the heating chamber (9). The discharge end of the cooking spiral coil (5) extends through the partition (8) into the discharge chamber (10). The spiral feeder (6) is located in the discharge chamber (10), and the discharge end of the spiral feeder (6) passes through the wall of the hot water tank (4). The screw feeder (6) is sealed to the partition (8).

8. The water-circulating type integrated machine for cleaning and cooking body flies according to claim 1, characterized in that, The cleaning water circulation system includes a cleaning water pump located outside the cleaning tank (1). A drain outlet is provided on the lower right side of the inner side of the cleaning tank (1). The drain outlet of the cleaning tank (1), the cleaning water pump, and the first water inlet pipe (11) of the cleaning spiral coil (2) are connected in sequence to form a cleaning water circulation loop. The hot water circulation system includes a hot water pump located outside the hot water tank (4), and another drain outlet is provided on the lower right side of the discharge chamber (10). The drain outlet of the discharge chamber (10), the hot water pump, and the second water inlet pipe (13) of the cooking spiral coil (5) are connected in sequence to form a hot water circulation loop.

9. A water-circulating type integrated machine for cleaning and cooking body flies according to claim 6, characterized in that, The bottom of the cleaning tank (1) and the discharge chamber (10) are both inclined surfaces (16), which gradually slope downward from right to left. A sewage pump is connected to the lowest point of the bottom of the cleaning tank (1) and the discharge chamber (10).

10. A water-circulating type integrated machine for cleaning and cooking body flies according to claim 1, characterized in that, A heating device is provided below the hot water pool (4), and the heating device adopts an electric heating tube or a steam heating coil.

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