Hermetia illucens larva drying and sorting device and method

Abstract

The invention relates to the technical field of hermetia illucens larva breeding, in particular to a hermetia illucens larva drying and sorting device and method.The hermetia illucens larva drying and sorting device comprises a drying box internally provided with a heating device used for drying fresh hermetia illucens larvae; the separating device is connected to the outlet end of the drying box and comprises a first conveying belt, a plurality of separating plates are arranged on the first conveying belt, and the separating plates and the first conveying belt do not interfere with each other; the recovery device comprises a chain type larva taking spoon device, a funnel conveying piece in butt joint with the chain type larva taking spoon device and a second conveying belt located at the bottom of the funnel conveying piece, and dried hermetia illucens larvae fall on the second conveying belt through the funnel conveying piece and are distributed on the second conveying belt at intervals; the blowing screening device comprises a blowing device and an image acquisition device, the image acquisition device is close to one end of the funnel conveying piece, the blowing device is fixed on the side surface of the second conveying belt, and the control system controls the blowing device to start according to image acquisition information. The device and the method are simple in structure and high in sorting precision.

Description

Technical Field

[0001] The invention relates to the technical field of black soldier fly larvae breeding, and in particular to a device and method for drying and sorting black soldier fly larvae. Background Art

[0002] After being crushed, dried black soldier fly larvae can be used as an additive in animal feed, including pigs, cattle, sheep and other animals. The dry powder of black soldier fly larvae contains 44%~48% crude protein and 34%~5% fat. The crude protein content of black soldier flies is similar to or slightly higher than that of fresh fish, fish meal and meat and bone meal. The drying equipment can obtain black soldier fly products with bright yellow and full color by precisely controlling the drying temperature and time, which can ensure that the nutritional content and taste of black soldier fly products are not lost, and improve the market competitiveness of the products. However, there are deviations in the moisture content of black soldier fly larvae, as well as differences in growth conditions. The moisture content of drying is uneven. After drying, some black soldier fly larvae are dull or burnt in color. When mixed together, it will affect the overall nutritional content and taste of the finished black soldier fly products.

[0003] CN221840057U discloses a black soldier fly insect dry processing device, including a frame and a drying mechanism and a screening mechanism arranged on the frame, the drying mechanism dries the black soldier fly, the screening mechanism separates the larvae from the dirt, the drying mechanism includes a stirring assembly, a stirring chamber, a heating plate and a feeding assembly, the stirring assembly is installed in the stirring chamber, the heating plate is installed on the inner wall of the stirring chamber, the feeding assembly is installed at the lower end of the stirring chamber, and the stirring chamber is provided with a feeding port, and the black soldier fly enters the stirring chamber from the feeding port. The above-mentioned black soldier fly insect dry processing device cannot separate unqualified black soldier fly larvae, which affects the quality and taste of the product. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies and defects mentioned in the above background technology and to provide a black soldier fly larvae drying and sorting device and method with simple structure and high sorting accuracy.

[0005] In order to solve the above technical problems, the technical solution proposed by the present invention is: A drying box is provided with a heating device for drying fresh black soldier fly larvae; A partition device is connected to the outlet end of the drying box, and includes a first conveyor belt, on which a plurality of partition plates are provided, and the partition plates and the first conveyor belt do not interfere with each other; A recovery device is connected to the end of the first conveyor belt to receive the dried black soldier fly larvae. The recovery device includes a chain-type insect scoop device, a funnel conveyor connected to the chain-type insect scoop device, and a second conveyor belt located at the bottom of the funnel conveyor. The dried black soldier fly larvae pass through the funnel conveyor and fall onto the second conveyor belt and are distributed at intervals on the second conveyor belt. The air blowing screening device comprises an air blowing device and an image acquisition device, wherein the image acquisition device is close to one end of the funnel conveyor and the air blowing device is fixed on the side of the second conveyor belt. The control system controls the start of the air blowing device according to the image acquisition information.

[0006] In one embodiment, the blowing device includes an air blowing nozzle and a blocking slide symmetrically arranged on both sides of the second conveyor belt, the blocking slide includes a blocking curved plate and a fixed side plate connected to the blocking curved plate, an opening is formed at the bottom of the blocking curved plate, and a debris collection box is provided under the opening of the blocking curved plate.

[0007] In one embodiment, the air blowing device comprises a solenoid valve, the air blowing nozzle is a multi-hole linear type, and the air blowing nozzle faces the baffle curved panel.

[0008] In one embodiment, the funnel conveyor includes a funnel body and a conduit connected to the bottom of the funnel body. The opening of the funnel body is obliquely opposite to the chain insect scoop device to receive the dried black soldier fly larvae transmitted from the chain insect scoop device. The bottom of the conduit is connected to a limiting member.

[0009] In one embodiment, the chain-type insect scoop device includes a sprocket, a chain, and an insect scoop fixed on the chain at intervals. The insect scoop transfers the dried black soldier fly larvae to the funnel body when the chain passes through the turning point of the sprocket.

[0010] In one embodiment, the image acquisition device includes support rails fixed on both sides of the second conveyor belt, the support rails are close to one end of the bottom of the conduit, a light source box is provided at the bottom of the support rails, and a camera is provided in the light source box.

[0011] In one embodiment, the image acquisition device takes photos to identify the black soldier fly larvae on the second conveyor belt, and determines whether the black soldier fly larvae are qualified by color. When the black soldier fly larvae are identified as unqualified, a blowing signal is sent to the blowing device through the control system to open the solenoid valve to blow off the unqualified black soldier fly larvae.

[0012] In one embodiment, the acquisition area of ​​the camera is larger than the area where the black soldier fly larvae fall on the second conveyor belt, and a single-frame image of all the larvae that fall on the second conveyor belt at a single time is obtained through a single image acquisition.

[0013] In one embodiment, a plurality of parallel conveying paths are formed on the first conveyor belt through a partition plate, and the chain-type insect scoop device, the funnel conveyor, and the image acquisition device are provided in a plurality of sets.

[0014] Based on the same inventive concept, a sorting method of the black soldier fly larvae drying and sorting device as described above is also provided, comprising: Drying the fresh black soldier fly larvae by using a drying device; The dried black soldier fly larvae are conveyed to a chain-type insect scoop device via a first conveyor belt; The dried black soldier fly larvae are transported to the funnel conveyor at intervals by using a chain-type insect scoop device; The image acquisition device collects images of the black soldier fly larvae that fall from the funnel conveyor onto the second conveyor belt, and the control system processes the image information and sends corresponding signals to the blowing device to identify and judge the color of the black soldier fly larvae. If the color is black, the black soldier fly larvae are judged to be unqualified and the blowing device is started; if the color is not black, the blowing device is not started and qualified black soldier fly larvae are collected.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: in the black soldier fly larvae drying and sorting device of the present application, after the drying box starts working for a certain period of time and reaches a certain drying temperature, after drying, several dried black soldier fly larvae material flows are formed in order through the partition plate, and fall into the dried larvae recovery device, and the dried black soldier fly larvae are taken out in turn by the chain insect scoop and fall into the funnel conveyor, and fall on the second conveyor belt in order through the funnel conveyor, and are evenly distributed on the second conveyor belt at intervals, and enter the subsequent working area. When the dried larvae pass through the fixed image acquisition area in turn, the camera regularly acquires and transmits the image of the dried black soldier fly larvae, and the control system processes and judges the qualification of the black soldier fly larvae. If the black soldier fly larvae are judged to be unqualified, when the black soldier fly larvae arrive at the blowing station of the blowing and screening device, the blowing device is started to blow and recover the unqualified black soldier fly larvae. If the black soldier fly larvae are determined to be qualified, they will continue to move forward with the second conveyor belt and be collected to complete the drying and screening of the black soldier fly larvae. The above device has an ingenious structural design and can orderly transmit the dried black soldier fly larvae, and screen out qualified and unqualified black soldier fly larvae during the transmission process, with high screening accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic structural diagram of a black soldier fly larvae drying and sorting device according to one embodiment; Figure 2 It is a partial structural schematic diagram of a black soldier fly larvae drying and sorting device according to one embodiment; Figure 3 This is a schematic structural diagram of a chain-type insect scoop device according to one embodiment; Figure 4The present invention is a schematic diagram of a process for blowing away black soldier fly larvae according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and meticulously below in conjunction with the accompanying drawings and preferred embodiments of the present invention, but the protection scope of the present invention is not limited to the following specific embodiments.

[0019] Unless otherwise defined, all professional terms used below have the same meanings as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.

[0020] Unless otherwise specified, various instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0021] See also Figure 1-4 The black soldier fly larvae drying and sorting device of one embodiment mainly comprises a drying box 10, a partition device 20, a recovery device and an air blowing screening device 60 connected in sequence. The recovery device comprises a chain insect scoop device 30 and a funnel conveyor 40 connected to the chain insect scoop device 30. The air blowing screening device 60 comprises an air blowing device and an image acquisition device 50. The image acquisition device 50 is close to one end of the funnel conveyor 40, and the control system controls the start of the air blowing device according to the image acquisition information.

[0022] Specifically, in one embodiment, the drying box 10 includes a box body, and a heating device is provided in the box body for drying fresh black soldier fly larvae. Preferably, a collection box 12 is provided at the end of the drying box 10, and the drying box 10 and the collection box 12 are connected by a conveyor belt. When fresh black soldier fly larvae are fed into the drying box 10, some fresh larvae that have not entered the drying box 10 fall into the collection box 12, and can be taken out from the bottom opening and placed on the conveyor belt. The fresh black soldier fly larvae enter the drying box 10 for drying.

[0023] The partition device 20 is connected to the outlet end of the drying box 10, and includes a first conveyor belt 21. A plurality of partition plates 21 are provided on the first conveyor belt 21, and the partition plates 21 and the first conveyor belt 20 do not interfere with each other, and do not affect the smooth operation of the first conveyor belt 21. Preferably, the spacing between the plurality of partition plates 22 is the same, and a bracket is provided at the bottom of the partition device 20, and the height of the first conveyor belt 21 is adjusted by the bracket, and its height is aligned with the outlet of the drying box 10, so as to facilitate the smooth transmission of the dried black soldier fly larvae. In one embodiment, a plurality of parallel transmission paths are formed on the first conveyor belt 20 through the partition plates 21, and a plurality of chain-type insect scoop devices 30, funnel conveyors 40, and image acquisition devices are provided in a matching manner.

[0024] The recovery device is connected to the end of the first conveyor belt 21 and is located below the first conveyor belt 21 to recover the dried black soldier fly larvae. The recovery device includes a chain-type insect scoop device 30, a funnel conveyor 40 connected to the chain-type insect scoop device 30, and a second conveyor belt 44 located at the bottom of the funnel conveyor 40. The dried black soldier fly larvae pass through the funnel conveyor 40 and fall on the second conveyor belt 44 and are distributed at intervals on the second conveyor belt 44. Preferably, the chain-type insect scoop device 30 includes a sprocket 34, a chain 31, and an insect scoop 33 fixed at intervals on the chain 31. The insect scoop 33 conveys the dried black soldier fly larvae to the funnel conveyor 40 at the turning point where the chain 31 passes through the sprocket 34. The chain-type insect scoop device 30 also includes a plurality of partitions, the width between the partitions is the same as the width between the partitions 22, and the insect scoops 33 are arranged on the chain 31 at equal intervals. The insect scoop 33 is small in size and can hold one or two (in rare cases, multiple) black soldier fly larvae at a time. Each insect scoop 33 transfers the black soldier fly larvae dropped from the first conveyor belt 21 to the funnel conveyor 40 as the chain 31 runs. Preferably, two sprocket wheels 34 are provided on the top and one is provided on the bottom, forming a certain tilt angle. At the turning point of the sprocket wheel, the insect scoop 33 turns from the horizontal direction to tilt downward, so that the black soldier fly larvae of the insect scoop 33 can be smoothly transferred to the funnel conveyor 40 at the turning point. The chain insect scoop device 30 also includes a drive motor 35, which is used to drive the sprocket wheel 34 to rotate and drive the chain 31 to move. The drive motor 35 is fixed to the side of the partition. The funnel conveyor 40 includes a funnel body 41 and a conduit 42 connected to the bottom of the funnel body 41. The opening of the funnel body 41 is obliquely opposite to the chain-type insect scoop device 30. More specifically, the opening of the funnel body 41 is obliquely opposite to the insect scoop 33, and receives the dried black soldier fly larvae transmitted from the insect scoop 33. The bottom of the conduit 42 is connected to a limiting member 43, and the limiting member 43 is preferably U-shaped to prevent the black soldier fly larvae from shifting in position.

[0025] The air blowing screening device 60 includes an air blowing device and an image acquisition device 50. The image acquisition device 50 is close to one end of the funnel conveyor 40. The air blowing device is fixed on the side of the second conveyor belt 44. The control system controls the start of the air blowing device according to the image acquisition information.

[0026] In one embodiment, specifically, the blowing device includes an air blowing nozzle 62 and a blocking chute 61 symmetrically arranged on both sides of the second conveyor belt 44. The blocking chute 61 includes a blocking curved plate 611 and a fixed side plate 612 connected to the blocking curved plate 611, and the blocking curved plate 611 and the fixed side plate 612 form an oblique groove structure. An opening is formed at the bottom of the blocking curved plate 611, and a debris collection box 63 is provided under the opening of the blocking curved plate 611. The blowing device includes a solenoid valve, and the air blowing nozzle 62 is a multi-porous linear type, and the air blowing nozzle 62 is directly opposite to the blocking curved plate 611. When the air blowing device is working, the solenoid valve is opened, compressed air enters, and is ejected at high speed from the air blowing nozzle 62, blowing the dried unqualified black soldier fly larvae away laterally from the second conveyor belt 44. The air blowing nozzle 62 is blocked by the blocking chute 61 in the direction facing the air blowing nozzle 62, so that the unqualified black soldier fly larvae are blown by the high-speed airflow and are resisted by the blocking curved panel 611, changing direction and falling into the chute, and then falling into the debris collection box 63.

[0027] The image acquisition device 50 includes support rails 51 fixed on both sides of the second conveyor belt 44, and one end of the support rails 51 is close to the bottom of the guide tube 42. A light source box 52 is provided at the bottom of the support rails 51, and a camera is provided in the light source box. The image acquisition device 50 takes pictures and identifies the black soldier fly larvae on the second conveyor belt 44. The control system processes the image information and determines whether the black soldier fly larvae are qualified by color (if the surface of the larvae is black, it is unqualified). When the black soldier fly larvae are identified as unqualified, the control system sends a blowing signal to the blowing device to open the solenoid valve to blow the unqualified black soldier fly larvae to the debris collection box 63.

[0028] Preferably, the camera's acquisition area is larger than the area where the black soldier fly larvae fall on the second conveyor belt 44, and a single frame image of all the black soldier fly larvae that fall on the second conveyor belt 44 is obtained through a single image acquisition (generally 1-3 black soldier fly larvae). Since the chain-type insect scoop device 30 and the funnel conveyor 40 are used for transmission, it is ensured that the black soldier fly larvae delivered each time are generally single larvae. Of course, there may be two larvae stuck together occasionally. As long as there are unqualified black soldier fly larvae, the two larvae stuck together can be directly blown away. The outlet end of the second conveyor belt 44 is connected to an insect storage box 70 for collecting qualified dried black soldier fly larvae.

[0029] Based on the same inventive concept, a sorting method of the black soldier fly larvae drying and sorting device as described above is also provided, comprising: S110, drying the fresh black soldier fly larvae using the drying device 10; S120, conveying the dried black soldier fly larvae to the chain-type insect scoop device 30 via the first conveyor belt 21; S130, using the chain-type insect scoop device 30 to transport the dried black soldier fly larvae to the funnel conveyor 40 at intervals; S140, using the image acquisition device 50 to acquire images of the black soldier fly larvae that fall from the funnel conveyor onto the second conveyor belt 44, and using the control system to process the image information and send corresponding signals to the blowing device to identify and determine the color of the black soldier fly larvae. If the color is black, the black soldier fly larvae are determined to be unqualified and the blowing device is started; if the color is non-black, the blowing device is not started and qualified black soldier fly larvae are collected.

[0030] Specifically, see Figure 4 The position range where the dried black soldier fly larvae fall on the second conveyor belt 44 is Lx×Ly (falling within the position range interval), the difference represented by the number 3 in the figure, v is the moving speed of the conveyor belt, that is, the moving speed of the dried black soldier fly larvae on the second conveyor belt 44, and the image acquisition area is larger than the position range where the black soldier fly larvae fall on the conveyor belt, which is Lx 1 ×Ly 1 . Set the center point of the image acquisition area to O, and obtain a single-frame image of all the dried black soldier fly larvae that fall on the second conveyor belt 44 at a single time through a single image acquisition (the black soldier fly larvae that fall on the second conveyor belt 44 each time are generally single black soldier fly larvae to be detected each time because of the chain-type insect scoop device 30, and occasionally there will be 1-3 overlapping black soldier fly larvae). The effective blowing length range of the air blowing nozzle 62 is L1, and the distance between O at the center of the image acquisition area and the blowing station is L2; ​​the dried black soldier fly larvae on the second conveyor belt 44 are represented by non-black (actually generally light yellow) and black to represent qualified and unqualified. On the second conveyor belt 44, along its movement direction, if the distance between two dried black soldier fly larvae that fall at a single time is zero, the black soldier fly larvae overlap (adhesion). According to the situation of the black soldier fly larvae that fall on the conveyor belt each time, the following blowing scheme can be designed: 1. When the black soldier fly larvae that fall onto the conveyor belt at a single time are single or overlapping black soldier fly larvae that fall at a single time, and at least one black soldier fly larvae is unqualified, as shown in the larvae area of ​​area 1 (number 1 in the figure) at time T1 in the figure, the length of the black soldier fly larvae interval is L3, O1 is a point on the vertical midline of the black soldier fly larvae, and the distance between O and O1 along the conveyor belt direction is L4. If O1 is on the right side of O, L4 takes a positive direction, otherwise it takes a negative direction, and the same applies below. The image acquisition time is T1. If L3≤L1 (equivalent to the black soldier fly larvae to be detected interval being much smaller than the operating interval of the blowing station), then at T3=T1+(L2-L4+L1 / 2) / v (the position distance point in the column of time T3 in the figure), the solenoid valve is started, and the blowing device blows away single or overlapping black soldier fly larvae; if L3>L1 (multiple black soldier fly larvae fall at a single time, which is equivalent to the span of the larvae falling being large, which is larger than the operating width of the subsequent blowing station), then L3 is divided into several intervals smaller than L1, and the intervals are blown away one by one (this is a rare case).

[0031] 2. When multiple non-overlapping black soldier fly larvae are dropped onto the conveyor belt at a single time and all of them fail, as shown in area 2 at time T2 in the figure (the box area marked with number 2 in the figure), the position O2 is designed to be a point on the vertical midline of the larval interval, the distance between O2 and O along the conveyor belt direction is L5, and the image acquisition time is T2. When L3≤L1, at T5=T2+(L2-L5+L1 / 2) / v At this time, blow away all black soldier fly larvae. When L3>L1, separate them according to the method in Scheme 1 and blow them away step by step. 3. When multiple non-overlapping black soldier fly larvae fall on the conveyor belt at a time, and the pass rates of two adjacent black soldier fly larvae are inconsistent, as shown in area 3 falling at time T4 in the figure, O3 is designed to be a point on the vertical midline between adjacent larvae along the conveyor belt direction (the front one is unqualified, the back one is qualified), and O4 is a point on the vertical midline between another adjacent larvae (the front one is qualified, the back one is unqualified). The distances between O3, O4 and O along the conveyor belt direction are L6 and L7 respectively. The image acquisition time is T4. Then at T6=T4+(L2-L6) / v At this time, blow away the unqualified larvae in the previous strip, and at T7=T4+(L2-L7+L1) / v At the moment, blow off the unqualified larvae in the back strip; the collection time is different from the blowing time, so the positioning calculation is performed based on the distribution characteristics and distance of the middle larvae. L2 is always the distance between O and the blowing station at the center of the image collection area. It is measured as the benchmark distance.

[0032] 4. If all the single qualified or overlapping black soldier fly larvae that fall on the conveyor belt at one time are qualified, they will be retained. At time T8 in the figure, areas 1, 2, and 3 have completed the blowing off of the larvae.

[0033] The above scheme calculates the blowing time accurately, so that the effective blowing length range can be accurately controlled within a smaller range. When the overall conveying speed is adjusted to be slower and the effective blowing length range is longer, the blowing time accuracy can be lowered. Therefore, the above scheme is not the only feasible scheme, and the above parameters can be adjusted according to actual conditions.

[0034] In the black soldier fly larvae drying and sorting device of the present application, after the drying box starts working for a certain period of time and reaches a certain drying temperature, after drying, several dried black soldier fly larvae material flows are formed in order through the partition plate, and fall into the dried larvae recovery device, and the dried black soldier fly larvae are taken out in turn by the chain worm scoop and fall into the funnel conveyor, and fall on the second conveyor belt in order through the funnel conveyor, and are evenly distributed on the second conveyor belt and enter the subsequent working area. When the dried larvae pass through the fixed image acquisition area in turn, the camera regularly collects and transmits the image of the dried black soldier fly larvae, and the control system processes and judges the qualification of the black soldier fly larvae. If the black soldier fly larvae are judged to be unqualified, when the black soldier fly larvae arrive at the blowing station of the blowing and screening device, the blowing device is started to blow and recover the unqualified black soldier fly larvae. If the black soldier fly larvae are determined to be qualified, they will continue to move forward with the second conveyor belt and be collected to complete the drying and screening of the black soldier fly larvae. The above device has an ingenious structural design and can orderly transmit the dried black soldier fly larvae, and screen out qualified and unqualified black soldier fly larvae during the transmission process, with high screening accuracy.

Claims

1. A device for drying and sorting black soldier fly larvae, characterized in that: include: A drying box is provided with a heating device for drying fresh black soldier fly larvae; A partition device is connected to the outlet end of the drying box, and includes a first conveyor belt, on which a plurality of partition plates are provided, and the partition plates and the first conveyor belt do not interfere with each other; A recovery device is connected to the end of the first conveyor belt to receive the dried black soldier fly larvae. The recovery device includes a chain-type insect scoop device, a funnel conveyor connected to the chain-type insect scoop device, and a second conveyor belt located at the bottom of the funnel conveyor. The dried black soldier fly larvae pass through the funnel conveyor and fall onto the second conveyor belt and are distributed at intervals on the second conveyor belt. The air blowing screening device comprises an air blowing device and an image acquisition device, wherein the image acquisition device is close to one end of the funnel conveyor and the air blowing device is fixed on the side of the second conveyor belt. The control system controls the start of the air blowing device according to the image acquisition information.

2. The black soldier fly larvae drying and sorting device according to claim 1, characterized in that: The blowing device includes an air blowing nozzle and a blocking slide symmetrically arranged on both sides of the second conveyor belt. The blocking slide includes a blocking curved plate and a fixed side plate connected to the blocking curved plate. An opening is formed at the bottom of the blocking curved plate, and a debris collection box is provided under the opening of the blocking curved plate.

3. The black soldier fly larvae drying and sorting device according to claim 2, characterized in that: The air blowing device comprises an electromagnetic valve, the air blowing nozzle is a multi-hole linear type, and the air blowing nozzle faces the baffle curved panel.

4. The black soldier fly larvae drying and sorting device according to claim 3, characterized in that: The funnel conveyor comprises a funnel body and a conduit connected to the bottom of the funnel body. The opening of the funnel body is obliquely opposite to the chain insect scoop device to receive the dried black soldier fly larvae transmitted from the chain insect scoop device. The bottom of the conduit is connected to a limiting member.

5. The black soldier fly larvae drying and sorting device according to claim 4, characterized in that: The chain-type insect scoop device comprises a sprocket, a chain and an insect scoop fixed on the chain at intervals. The insect scoop transfers the dried black soldier fly larvae to the funnel body when the chain passes through the turning point of the sprocket.

6. The black soldier fly larvae drying and sorting device according to claim 4, characterized in that: The image acquisition device comprises support rails fixed on both sides of the second conveyor belt, one end of the support rails is close to the bottom of the conduit, a light source box is arranged at the bottom of the support rails, and a camera is arranged in the light source box.

7. The black soldier fly larvae drying and sorting device according to claim 1, characterized in that: The image acquisition device takes photos to identify the black soldier fly larvae on the second conveyor belt, and determines whether the black soldier fly larvae are qualified by color. When it is identified that the black soldier fly larvae are unqualified, a blowing signal is sent to the blowing device through the control system to open the solenoid valve to blow the unqualified black soldier fly larvae off.

8. The black soldier fly larvae drying and sorting device according to claim 7, characterized in that: The acquisition area of ​​the camera is larger than the area where the black soldier fly larvae fall on the second conveyor belt, and a single-frame image of all the larvae that fall on the second conveyor belt at a single time is obtained through single image acquisition.

9. The black soldier fly larvae drying and sorting device according to claim 1, characterized in that: A plurality of parallel conveying paths are formed on the first conveyor belt through the partition plate, and the chain-type insect scoop device, the funnel conveyor, and the image acquisition device are matched and arranged in plurality.

10. A sorting method using the black soldier fly larvae drying and sorting device according to any one of claims 1 to 9, characterized in that: include: Drying the fresh black soldier fly larvae by using a drying device; The dried black soldier fly larvae are conveyed to a chain-type insect scoop device via a first conveyor belt; The dried black soldier fly larvae are transported to the funnel conveyor at intervals by using a chain-type insect scoop device; The image acquisition device collects images of the black soldier fly larvae that fall from the funnel conveyor onto the second conveyor belt, and the control system processes the image information and sends corresponding signals to the blowing device to identify and judge the color of the black soldier fly larvae. If the color is black, the black soldier fly larvae are judged to be unqualified and the blowing device is started; if the color is not black, the blowing device is not started and qualified black soldier fly larvae are collected.

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