Separating, cleaning and drying device and method for hermetia illucens prepupae

Abstract

The hermetia illucens prepupa separating, cleaning and drying device comprises a barrel, a barrel cover is arranged at the top of the barrel, a heat source, a separating tank and a cleaning cavity are sequentially arranged in the barrel from top to bottom, and the included angle between the tank wall and the tank bottom of the separating tank is 145-155 degrees; the separation tank is provided with a pre-pupa falling hole and / or a gap for the pre-pupa to fall is arranged between the separation tank and the cylinder body, a grid plate for receiving the pre-pupa and a stirring device are arranged in the cleaning cavity, the stirring device is positioned below the grid plate, and the cleaning cavity is provided with a water outlet. The included angle between the groove wall and the groove bottom of the separation groove is 145-155 degrees, the physiological habit that black soldier fly prepupae climb upwards is met, the prepupae can be effectively promoted to climb out and be separated under the assistance of the environment temperature of 30-35 DEG C, and the prepupa separation efficiency is improved. Separation, cleaning and drying of the hermetia illucens prepupae can be achieved in the same space, clean prepupae and hermetia illucens sand are obtained, prepupa loss caused by transferring is avoided, operation is convenient, and the hermetia illucens prepupa treatment efficiency and the hermetia illucens breeding economic benefits are effectively improved.

Description

Technical Field

[0001] The present invention relates to a black soldier fly prepupae separation, cleaning and drying device, belonging to the technical field of black soldier fly breeding. The present invention also relates to a black soldier fly prepupae separation, cleaning and drying method using the black soldier fly prepupae separation, cleaning and drying device. Background Art

[0002] The black soldier fly (Hermitia illucens), a saprophytic insect of the family Solenopsis, feeds on livestock manure and household waste, producing high-value animal protein feed. Its rapid reproduction, large biomass, wide-ranging diet, high absorption and conversion rate, ease of management, low rearing costs, and good palatability for animals have led to its widespread utilization as a resource and widespread adoption worldwide. Native to the Americas, the black soldier fly was recently introduced to my country and is now widespread in Guizhou, Guangxi, Guangdong, Shanghai, Yunnan, Hunan, and Hubei. It is currently widely used to treat waste such as chicken manure, pig manure, and food waste.

[0003] After reaching the fifth instar, black soldier fly larvae gradually turn dark brown, their body walls harden, they stop feeding, and their shells 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 are significantly higher than fish meal and soybean meal, which have similar efficacy, making them a great feed material. Batch drying of these prepupae reduces moisture content and preserves their active ingredients, making them easy to package, store, transport, and sell. This results in low production costs and high nutritional value. Furthermore, black soldier fly sand, rich in nitrogen, phosphorus, and well-decomposed organic matter, can be used as a fertilizer for seedlings and as a functional organic fertilizer for tea, fruit, or tobacco, offering broad market potential.

[0004] In the prior art, the sorting of black soldier fly prepupae mainly relies on a method combining wind screening and water washing, that is, by selecting a specific mesh to separate food residues with excessively large particle sizes and insect sand that is too small, a prepupae product containing a small amount of impurities is initially obtained. However, this method is incomplete in screening due to adhesion and agglomeration of prepupae and impurities such as insect sand, and the residual organic impurities (such as insect sand, feed debris) directly affect the cleanliness of the prepupae, causing the quality of subsequent products to decline and causing waste of resources. The prepupae after sorting need to be transported to independent processes such as washing and drying in turn for processing. During the repeated transportation process, the prepupae will continue to crawl and escape due to their upward habit, especially in the migration to low temperature areas under high temperature environments, which increases the difficulty of transportation and causes a large amount of losses. In addition, the whole process from screening, cleaning to drying relies on manual repeated handling, consumes a lot of human resources and is cumbersome to operate. Summary of the Invention

[0005] The purpose of the present invention is to provide a black soldier fly prepupae separation, cleaning and drying device and method that can realize the separation, cleaning and drying of black soldier fly prepupae in the same space, avoid the problem of prepupae escape loss caused by repeated transportation, and improve the black soldier fly prepupae sorting cleanliness, work efficiency and resource utilization.

[0006] In order to achieve the above technical purpose, the technical solution of the present invention is:

[0007] The invention relates to a black soldier fly prepupa separation, cleaning and drying device, comprising a cylinder, a cylinder cover being provided on the top of the cylinder, a heat source, a separation tank and a cleaning chamber being sequentially provided in the cylinder from top to bottom, the angle between the tank wall and the tank bottom of the separation tank being 145-155° (preferably 150°), the separation tank being provided with a prepupa drop hole and / or a gap being provided between the separation tank and the cylinder for the prepupa to drop, a grid plate for receiving the prepupa and a stirring device being provided in the cleaning chamber, the stirring device being located below the grid plate, and the cleaning chamber being provided with a drain outlet.

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

[0009] The heat source is a microwave generator, a heating lamp, or an electric heating wire. Preferably, the microwave generator is used. Microwave drying can make the prepupa more agitated, thereby improving the efficiency of separating the prepupa from the insect sand. At the same time, microwave drying can better preserve the nutrients of the prepupa and the insect sand.

[0010] The stirring device comprises a stirring blade and a power device. The stirring blade is arranged at the bottom of the cleaning chamber, and the power device drives the stirring blade to rotate.

[0011] The bottom of the cleaning chamber is in an inverted cone shape, which is conducive to the sinking and removal of impurities; the stirring blades are arranged at the bottom of the inverted cone-shaped cleaning tank, which can form a micro-vortex water flow and improve the cleaning efficiency of the prepupa.

[0012] The mesh size of the grid plate is 80-150 mesh, preferably 80 mesh. The grid plate can catch fallen prepupae and prevent prepupae from crawling under the grid plate, facilitating the collection of prepupae. Furthermore, the grid plate can filter out washed impurities, improving the efficiency of prepupae washing.

[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 in the shell from being too high and entering the separation tank.

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

[0015] The method for separating, cleaning and drying black soldier fly prepupae comprises the following steps:

[0016] S1: Place the prepupae to be separated into the separation tank and cover the tank lid.

[0017] S2: The temperature of the heat source is adjusted to 30-35°C (preferably 32°C), and the prepupae crawl out of the separation tank and fall onto the grid plate; 30-35°C can effectively promote the prepupae to crawl out and better separate the prepupae and insect sand.

[0018] S3: Fill the cleaning chamber with water and start a stirring device, which stirs the liquid to rinse the prepupa on the grid plate.

[0019] S4: After the prepupae are rinsed, the liquid in the cleaning cavity is drained.

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

[0021] S6: Open the tube cover and collect the insect sand and prepupae.

[0022] The 145-155° angle between the wall and bottom of the separation tank of the present invention is consistent with the upward climbing physiological habit of black soldier fly prepupae. Combined with an ambient temperature of 30-35°C, this effectively encourages the prepupae to crawl out and separate, improving prepupae separation efficiency. The present invention can separate, clean, and dry black soldier fly prepupae in the same space, producing relatively clean prepupae and insect litter, while avoiding prepupae loss due to transportation. The system is easy to operate and effectively improves the efficiency of black soldier fly prepupae processing and the economic benefits of black soldier fly farming. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 1 This is a schematic diagram of the structure of the black soldier fly prepupae separation, cleaning and drying device.

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

[0026] Figure 3 Schematic diagram of the separation tank structure. DETAILED DESCRIPTION

[0027] like Figures 1 to 3 As shown, the black soldier fly prepupae separation, cleaning and drying device includes a cylinder 1, which is arranged on a support 13, the bottom of the cylinder 1 is an inverted cone, and a cylinder cover 2 is arranged on the top of the cylinder 1.

[0028] like Figure 2As shown, a heat source 3, a separation tank 4, and a cleaning chamber are sequentially arranged from top to bottom in the barrel 1. A grid plate 5 for receiving prepupae and a stirring device are arranged in the cleaning chamber. The stirring device is located below the grid plate 5 and is arranged at the bottom of the barrel 1. Specifically, the stirring device includes a stirring blade 61 and a power unit 63. The stirring blade 61 is located in the barrel and is connected to a rotating shaft 62. The bottom of the barrel 1 is provided with an axial hole for the rotating shaft 62 to pass through. The rotating shaft 62 is rotatably connected in the axial hole. A driven wheel is arranged on the rotating shaft 62 outside the barrel 1. The driven wheel is connected to the driving wheel by a belt. The driving wheel is arranged on the rotating shaft of the power unit 63. The power unit 63 is a motor (or other common power unit). The motor drives the driving wheel to rotate. The driving wheel drives the driven wheel to rotate via the belt. The driven wheel drives the stirring blade 61 to rotate via the rotating shaft 62. The stirring blade 61 stirs the liquid in the cleaning chamber. Of course, the transmission method between the rotating shaft 62 and the power unit 63 can also adopt other common transmission mechanisms (such as chains, gears, etc.). 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 arranged on the side wall of the cylinder 1 below the grid plate 5, or be arranged on the inside of the cylinder 1 as a whole.

[0029] A mesh plate support block 12 is provided on the inner wall of the cylinder 1. The mesh plate 5 is supported on the mesh plate support block 12 and fastened to the mesh plate support block 12 by fasteners, which are screws (or common snaps or other common fasteners), thereby fixing the mesh plate 5 inside the cylinder 1. The mesh number of the mesh plate 5 is 80 mesh (or 80-150 mesh).

[0030] like Figure 2 、 3 As shown, the separation tank 4 includes a tank wall 41 and a tank bottom 42, with the angle between the tank wall 41 and the tank bottom 42 being 150° (or 145-155°). 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, such as screws (or common snaps or other common fasteners), thereby fixing the separation tank 4 inside the cylinder 1.

[0031] The separation tank 4 is provided with a prepupa drop hole 44, as shown in FIG. Figure 3 As shown, the prepupae dropping hole 44 is provided on the separation tank support plate 43; of course, the prepupae dropping hole 44 can also be provided on the tank wall 41 of the separation tank 4, located in the upper middle portion of the tank wall 41; the prepupae to be separated are placed in the separation tank 4, the prepupae climb upward along the tank wall 41, and then fall through the prepupae dropping hole 44 into the cleaning chamber below the separation tank 4. Of course, a gap can also be provided between the separation tank 4 and the cylinder 1 for the prepupae to fall through, and the prepupae fall into the cleaning chamber through the gap.

[0032] Described heat source 3 is arranged on the cylinder cover 2, and heat source 3 is microwave generator (or heating lamp or electric heating wire or other common heating body).Of course, heat source 3 also can be arranged on the top of separation tank 4 by other fixing mechanism.

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

[0034] The method for separating, cleaning and drying black soldier fly prepupae comprises the following steps:

[0035] S1: Open the cylinder cover 2, place the required grid plate 5 and separation tank 4 in the cylinder body 1 in sequence, then spread the prepupae mixture to be separated into the separation tank 4, the height of the prepupae 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°C (or 30-35°C) for 20 minutes. During the heating period, the heating temperature will be transmitted from top to bottom. The prepupa will crawl out of the separation tank 4 from the insect sand due to its dual habits of climbing upward and escaping from heat, and then fall onto the grid plate 5.

[0037] S3: Close the drain outlet, open the water inlet and the water control port, and then inject water into the barrel 1 (cleaning chamber). After injecting water to the water control port, excess liquid will flow out from the water control port; when water flows from the water control port, stop injecting water; start the power unit 63, the power unit 63 drives the stirring blade 61 to rotate, the speed of the stirring blade 61 is 30 rpm, and the stirring blade 61 stirs the liquid to rinse the prepupa on the grid plate 5, and the rinsing time is 10 min.

[0038] S4: After the prepupa is rinsed, the drain is opened to discharge the liquid in the cleaning chamber.

[0039] S5: The temperature of the heat source is adjusted to 70° C. (or 60-80° C.) and heated for 30 minutes to dry the insect sand in the separation tank 4 and the prepupae on the grid plate 5.

[0040] S6: After the temperature in the cylinder 1 returns to normal temperature, the cylinder cover is opened, and the insect sand and prepupae are taken out from top to bottom to complete the processing of the black soldier fly prepupae.

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

Claims

1. A device for separating, cleaning and drying black soldier fly prepupae, characterized by: The invention comprises a cylinder body, a cylinder cover is provided on the top of the cylinder body, a heat source, a separation tank and a cleaning chamber are sequentially provided in the cylinder body from top to bottom, the angle between the tank wall and the tank bottom of the separation tank is 145-155 degrees, the separation tank is provided with a prepupa dropping hole and / or a gap for the prepupa to drop is provided between the separation tank and the cylinder body, a grid plate for receiving the prepupa and a stirring device are provided in the cleaning chamber, the stirring device is located below the grid plate, and the cleaning chamber is provided with a drain outlet.

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

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

4. The black soldier fly prepupae separation, cleaning and drying device according to claim 1, characterized in that: The stirring device comprises a stirring blade and a power device. The stirring blade is arranged at the bottom of the cleaning chamber, and the power device drives the stirring blade to rotate.

5. The black soldier fly prepupae separation, cleaning and drying device according to claim 1 or 4, characterized in that: The bottom of the cleaning chamber is in an inverted cone shape.

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

7. The black soldier fly prepupae 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, and the water control port is located between the separation tank and the grid plate.

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

9. A method for separating, cleaning and drying black soldier fly prepupae, characterized in that: The following steps are involved: S1: Place the prepupa to be separated into the separation tank and cover it with a tube cover; S2: The temperature of the heat source is adjusted to 30-35°C, and the prepupae crawl out of the separation tank and fall onto the grid plate; S3: Fill the cleaning chamber with water and start a stirring device to stir the liquid to rinse the prepupae on the grid plate; S4: After the prepupa is rinsed, the liquid in the cleaning cavity is drained; S5: The temperature of the heat source is adjusted to 60-80° C. to dry the insect sand in the separation tank and the prepupae on the grid plate.

Images