Separating, cleaning and drying device for black soldier fly prepupae

Abstract

The utility model discloses black water beetle prepupa separation cleaning and drying device, including the cylinder, the cylinder top is provided with the cylinder cover, the heat source is arranged from top to bottom in succession with separation groove and cleaning chamber in the cylinder, the included angle between the separation groove's groove wall and groove bottom is 145~155 DEG, the separation groove is provided with the prepupa drop -out hole and / or is provided with the interval for the prepupa drop -out between separation groove and the cylinder, be provided with the grid plate and agitator of the prepupa in -the -cleaning chamber, the agitator is located below the grid plate, the cleaning chamber is provided with the drain. The utility model is between the separation groove groove wall and groove bottom 145~155 DEG's included angle, accords with the physiological habit of black water beetle prepupa upwardly and clings to, again with 30~35 DEG C's ambient temperature, can effectively make the prepupa crawl out separation, improves the prepupa separation efficiency.

Description

Technical Field

[0001] This utility model relates to a device for separating, cleaning, and drying pre-pupae of black soldier fly larvae, belonging to the field of black soldier fly farming technology. This utility model also relates to a method for separating, cleaning, and drying pre-pupae of black soldier fly larvae using this device. Background Technology

[0002] Black soldier flies (Hermitia illucens) are saprophytic insects belonging to the family Hermitidae. They can feed on poultry and livestock manure and household waste to produce high-value animal protein feed. Due to their rapid reproduction, large biomass, wide diet, high absorption and conversion rate, ease of management, low feeding costs, and good palatability to animals, they can be utilized as resources and have been vigorously promoted worldwide.

[0003] After five instars, black soldier fly larvae gradually turn dark brown, their body walls harden, they cease feeding, and their exoskeletons become more chitinous, entering the prepupal stage. Black soldier fly prepupae are rich in essential amino acids and unsaturated fatty acids, and their zinc, manganese, and iron content is significantly higher than that of fishmeal and soybean meal with similar effects, indicating significant feed potential. Batch drying of black soldier fly prepupae results in low moisture content, better preservation of active ingredients, and ease of packaging, storage, transportation, and sales, leading to low production costs and high nutritional value. Furthermore, black soldier fly larvae sand is rich in nitrogen and phosphorus and fully decomposed organic matter, making it suitable as seedling fertilizer, and as a functional organic fertilizer for tea, fruit, or tobacco, with broad market prospects.

[0004] In existing technologies, the sorting of black soldier fly prepupae mainly relies on a combination of wind-powered screening and water washing. This involves selecting specific sieve meshes to separate excessively large food residues and excessively small insect debris, initially obtaining a prepupae product containing a small amount of impurities. However, this method suffers from incomplete screening due to the adhesion and clumping of prepupae and insect debris. Residual organic impurities (such as insect debris and feed crumbs) directly affect the cleanliness of the prepupae, leading to a decline in the quality of subsequent products and resource waste. After sorting, the prepupae need to be transferred sequentially to independent processes such as washing and drying. During repeated transfers, the prepupae, due to their tendency to move upwards, will continuously crawl and escape, especially migrating from high-temperature environments to low-temperature areas, increasing the difficulty of transfer and causing significant losses. Furthermore, the entire process from screening and washing to drying relies on repeated manual handling, consuming substantial manpower and being cumbersome. Utility Model Content

[0005] The purpose of this invention is to provide a black soldier fly pre-pupa separation, cleaning, and drying device and method that can separate, clean, and dry black soldier fly pre-pupae in the same space, avoid the problem of pre-pupae escape and loss caused by repeated transfer, and improve the cleanliness, work efficiency, and resource utilization of black soldier fly pre-pupae sorting.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:

[0007] A black soldier fly pre-pupa separation, cleaning, and drying device includes a cylindrical body with a cover at the top. Inside the cylindrical body, from top to bottom, are arranged a heat source, a separation tank, and a cleaning chamber. The angle between the wall and bottom of the separation tank is 145-155° (preferably 150°). The separation tank has a pre-pupa drop hole and / or a gap between the separation tank and the cylindrical body for the pre-pupa to drop. The cleaning chamber contains a grid plate for receiving the pre-pupa and a stirring device, with the stirring device located below the grid plate. The cleaning chamber also has a drain outlet.

[0008] The heat source is located on the cylinder cover.

[0009] The heat source is a microwave generator, a heating lamp, or a heating wire. A microwave generator is preferred, as microwave drying makes the prepupa more agitated, improving the separation efficiency between the prepupa and the insect sand; simultaneously, microwave drying better preserves the nutrients in both the prepupa and the insect sand.

[0010] The stirring device includes stirring blades and a power unit. The stirring blades are located at the bottom of the cleaning chamber, and the power unit drives the stirring blades to rotate.

[0011] The bottom of the cleaning chamber is inverted conical. The inverted conical bottom of the cleaning chamber facilitates the settling and removal of impurities; the stirring blades are set at the bottom of the inverted conical cleaning tank, which can form a micro-vortex water flow and improve the pre-cleaning efficiency.

[0012] The mesh size of the grid plate is 80-150 mesh, preferably 80 mesh. The grid plate can catch the falling pre-pupae and prevent them from crawling underneath it, facilitating their collection. Simultaneously, the grid plate can filter out impurities washed away, improving the washing efficiency of the pre-pupae.

[0013] The side wall of the cylinder is provided with a water control port, which is located between the separation tank and the grid plate. The water control port can prevent the water level inside the shell from becoming too high and entering the separation tank.

[0014] The cleaning chamber is equipped with a water inlet.

[0015] A method for separating, cleaning, and drying pre-pupae of black soldier fly larvae includes the following steps:

[0016] S1: Place the pre-pupae to be separated into the separation tank and cover it with the cylinder lid.

[0017] S2: Adjust the temperature of the heat source to 30-35℃ (preferably 32℃), and the pre-pupa crawls out of the separation tank and falls onto the grid plate; 30-35℃ can effectively promote the pre-pupa to crawl out, and better separate the pre-pupa from the insect sand.

[0018] S3: Inject water into the cleaning chamber and start the stirring device. The stirring device agitates the liquid to rinse the pre-pupae on the grid plate.

[0019] S4: After rinsing the pre-pupae, drain the liquid from the cleaning chamber.

[0020] S5: Adjust the temperature of the heat source to 60-80℃ (preferably 70℃) to dry the insect sand in the separation tank and the pre-pupae on the grid plate. 60-80℃ can better preserve nutrients and disinfect bacteria.

[0021] S6: Open the tube lid and collect the insect sand and pre-pupae.

[0022] The 145-155° angle between the wall and bottom of the separation tank in this invention conforms to the physiological habit of black soldier fly prepupae climbing upwards. Combined with an ambient temperature of 30-35°C, this effectively promotes the prepupae to crawl out and separate, improving separation efficiency. This invention allows for the separation, cleaning, and drying of black soldier fly prepupae within the same space, yielding relatively clean prepupae and insect debris. It avoids prepupa loss during transportation, is easy to operate, and effectively improves the processing efficiency of black soldier fly prepupae and the economic benefits of black soldier fly farming. Attached Figure Description

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 This is a schematic diagram of a device for separating, cleaning, and drying pre-pupae of black soldier fly larvae.

[0025] Figure 2 A schematic diagram of the cross-sectional structure of a black soldier fly pre-pupa separation, cleaning, and drying device.

[0026] Figure 3 This is a schematic diagram of the separation tank structure. Detailed Implementation

[0027] like Figures 1-3 As shown, the black soldier fly pre-pupa separation, cleaning and drying device includes a cylinder 1, which is mounted on a support 13. The bottom of the cylinder 1 is inverted conical, and the top of the cylinder 1 is covered with a cylinder cover 2.

[0028] like Figure 2As shown, the cylinder 1 contains, from top to bottom, a heat source 3, a separation tank 4, and a cleaning chamber. The cleaning chamber contains a grid plate 5 for receiving pre-cocoons and a stirring device. The stirring device is located below the grid plate 5, at the bottom of the cylinder 1. Specifically, the stirring device includes stirring blades 61 and a power unit 63. The stirring blades 61 are located inside the cylinder and connected to a rotating shaft 62. A shaft hole is provided at the bottom of the cylinder 1 for the rotating shaft 62 to pass through. The rotating shaft 62 is rotatably connected within the shaft hole. A driven wheel is mounted on the rotating shaft 62 outside the cylinder 1. The driven wheel is connected to a driving wheel via a belt. The driving wheel is mounted on the rotating shaft of the power unit 63, which is a motor (or other common power unit). The motor drives the driving wheel to rotate, and the driving wheel drives the driven wheel to rotate via a belt. The driven wheel drives the stirring blades 61 to rotate via the rotating shaft 62, thus agitating the liquid in the cleaning chamber. Alternatively, other common transmission mechanisms (such as chains, gears, etc.) can be used between the rotating shaft 62 and the power unit 63. Of course, the rotating shaft 62 can also be directly connected to the rotating shaft of the power unit 63. Of course, the stirring device can also be set on the side wall of the cylinder 1 below the grid plate 5, or it can be set entirely inside the cylinder 1.

[0029] A grid plate support block 12 is provided on the inner wall of the cylinder 1. The grid plate 5 is supported on the grid plate support block 12 and is fastened to the grid plate support block 12 by fasteners, such as screws (or common clips or other common fasteners), thereby fixing the grid plate 5 inside the cylinder 1. The mesh size of the grid plate 5 is 80 mesh (or 80 to 150 mesh).

[0030] like Figure 2 , 3 As shown, the separation tank 4 includes a tank wall 41 and a tank bottom 42, with an included angle of 150° (or 145° to 155°) between the tank wall 41 and the tank bottom 42. A separation tank support plate 43 is provided at the upper end of the tank wall 41, and a separation tank support block 11 is provided on the inner wall of the cylinder 1. The separation tank support plate 43 is supported on the separation tank support block 11 and is fastened to the separation tank support block 11 by fasteners, which are screws (or common clips or other common fasteners), thereby fixing the separation tank 4 inside the cylinder 1.

[0031] Separation tank 4 is equipped with pre-pupa drop holes 44, such as Figure 3 As shown, the pre-pupa drop hole 44 is provided on the separation tank support plate 43; of course, the pre-pupa drop hole 44 can also be provided on the tank wall 41 of the separation tank 4, located in the upper middle part of the tank wall 41; the pre-pupa to be separated is placed in the separation tank 4, the pre-pupa climbs up along the tank wall 41, and then falls into the cleaning chamber below the separation tank 4 through the pre-pupa drop hole 44. Of course, a gap can also be provided between the separation tank 4 and the cylinder 1 for the pre-pupa to fall into, and the pre-pupa falls into the cleaning chamber through the gap.

[0032] The heat source 3 is located on the cylinder cover 2, and the heat source 3 is a microwave generator (or heating lamp, heating wire, or other common heating element). Of course, the heat source 3 can also be located above the separation tank 4 with the help of other fixing mechanisms.

[0033] The bottom of the cylinder 1 is provided with a water inlet 91 and a water outlet 92. Between the separation tank 4 and the grid plate 5, a water control port 93 is provided on the side wall of the cylinder 1. Of course, the water inlet 91, the water outlet 92, and the water control port 93 are also provided with valves to open and close the pipeline or regulate the liquid flow.

[0034] A method for separating, cleaning, and drying pre-pupae of black soldier fly larvae includes the following steps:

[0035] S1: Open the cylinder cover 2, place the grid plate 5 and the separation tank 4 in the cylinder 1 in sequence, then spread the pre-pupa mixture to be separated evenly in the separation tank 4, the height of the pre-pupa mixture is 1 / 2 of the height of the separation tank 4, and then cover the cylinder cover 2.

[0036] S2: Turn on the heat source and adjust the temperature of the heat source 3 to 32℃ (or 30~35℃). Heat for 20 minutes. During the heating, the heating temperature will be conducted from top to bottom. The pre-pupa will crawl out of the separation tank 4 from the insect sand due to its dual habits of climbing upward and escaping from the heat, and then fall onto the grid plate 5.

[0037] S3: Close the drain outlet, open the inlet and the control outlet, and then inject water into the cylinder 1 (cleaning chamber). After the water reaches the control outlet, the excess liquid will flow out from the control outlet. Stop injecting water when the control outlet is flowing. Start the power unit 63, which drives the stirring blade 61 to rotate. The stirring blade 61 rotates at 30 rpm. The stirring blade 61 agitates the liquid to rinse the pre-pupa on the grid plate 5. The rinsing time is 10 minutes.

[0038] S4: After pre-pupa rinsing, open the drain outlet to drain the liquid in the cleaning chamber.

[0039] S5: Adjust the temperature of the heat source to 70℃ (or 60~80℃) and heat for 30 minutes to dry the insect sand in the separation tank 4 and the pre-pupae on the grid plate 5.

[0040] S6: After the temperature inside the cylinder 1 returns to normal, open the cylinder cover and take out the insect sand and pre-pupae from top to bottom to complete the treatment of black soldier fly pre-pupae.

[0041] The above embodiments do not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A black soldier fly pre-pupa separation, cleaning, and drying device, characterized in that: The device includes a cylindrical body with a cap on top. Inside the cylindrical body, from top to bottom, are arranged a heat source, a separation tank, and a cleaning chamber. The angle between the wall and bottom of the separation tank is 145° to 155°. The separation tank is provided with a pre-pupa drop hole and / or a gap is provided between the separation tank and the cylindrical body for the pre-pupa to drop. The cleaning chamber is provided with a grid plate for receiving the pre-pupa and a stirring device. The stirring device is located below the grid plate. The cleaning chamber is provided with a drain outlet.

2. The black soldier fly pre-pupa separation, cleaning, and drying device according to claim 1, characterized in that: The heat source is located on the cylinder cover.

3. The black soldier fly pre-pupa separation, cleaning, and drying device according to claim 1, characterized in that: The heat source is a microwave generator, a heating lamp, or a heating wire.

4. The black soldier fly pre-pupa separation, cleaning, and drying device according to claim 1, characterized in that: The stirring device includes stirring blades and a power unit. The stirring blades are located at the bottom of the cleaning chamber, and the power unit drives the stirring blades to rotate.

5. The black soldier fly pre-pupa separation, cleaning, and drying apparatus according to claim 1 or 4, characterized in that: The bottom of the cleaning chamber is inverted conical.

6. The black soldier fly pre-pupa separation, cleaning, and drying device according to claim 1, characterized in that: The mesh size of the grid plate is 80 to 150 mesh.

7. The black soldier fly pre-pupa separation, cleaning, and drying device according to claim 1, characterized in that: The side wall of the cylinder is provided with a water control port, which is located between the separation tank and the grid plate.

8. The black soldier fly pre-pupa separation, cleaning, and drying device according to claim 1, characterized in that: The cleaning chamber is equipped with a water inlet.

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