High-efficiency separation method and device for black soldier fly larvae and pre-pupae

Abstract

The application discloses a kind of black soldier fly larvae and pre-pupa high-efficiency separation method and device, it is related to black soldier fly breeding field, including LED lamp, incubator and collection box, it is equipped with partition in incubator, the upper edge of partition is fixed on the lateral wall of incubator, the lower edge of partition and the bottom of incubator leave separation gap, separation gap is divided into mixed area located at the outside of partition and separation area located at the inside of partition;LED lamp is irradiated above mixed area, the light of LED lamp is formed by partition shelter, the bottom of incubator in separation area is provided with a worm gap, for pre-pupa pass through.The application utilizes the photophobicity of black soldier fly pre-pupa, sets up LED lamp to make black soldier fly pre-pupa crawl out from mixture, and moves along the two sides of incubator, utilizes partition to manufacture dark sheltered environment to guide the moving direction of black soldier fly pre-pupa, then falls into collection box through worm gap, realizes high-efficiency separation, solves the problem of low efficiency, time-consuming and laborious of artificial separation pre-pupa and larvae.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of black soldier fly breeding, and particularly relates to a high-efficiency separation method and device for black soldier fly larvae and pre-pupae. BACKGROUND

[0002] Black soldier fly is a saprophytic Diptera of the family Stratiomyidae, which can feed on poultry manure and household waste to produce high-value animal protein feed. The larvae of black soldier fly are important animal protein resources. Depending on the rearing conditions, the rearing development of the larvae is divided into five to seven stages, and the last stage is usually called pre-pupa. The pre-pupa and other instar larvae have great differences in feeding behavior, usually stop feeding, avoid light, and seek dark sheltered places. Separating the pre-pupa and the larvae can effectively save the rearing space, improve the conversion rate of the feed substrate, and reduce the rearing residues. Therefore, it is necessary to develop a high-efficiency separation technology for pre-pupa and larvae.

[0003] Since the color of the pre-pupa is quite different from that of the larvae of other instars, the existing technology usually adopts a manual processing method for separation, which is not only low in efficiency, but also time-consuming and laborious. In addition, the mixture in the breeding box contains poultry manure and household waste, which has an unpleasant odor, and long-time work has health hazards. Therefore, a new high-efficiency separation device is needed to collect black soldier fly pre-pupae. SUMMARY

[0004] The present application aims to overcome the deficiencies in the prior art and provide a high-efficiency separation method and device for black soldier fly larvae and pre-pupae, solving the problems of low efficiency, time-consuming and laborious manual separation of pre-pupae and larvae.

[0005] The purpose of the present application is achieved by the following technical scheme: the high-efficiency separation device for black soldier fly larvae and pre-pupae comprises an LED lamp, a culture box and a collection box inserted into the lower part of the culture box, a partition plate is arranged in the culture box, the upper edge of the partition plate is fixed on the side wall of the culture box, and the lower edge of the partition plate is separated from the bottom of the culture box by a separation gap, the separation gap divides the culture box into a mixing area on the outside of the partition plate and a separation area on the inside of the partition plate; the LED lamp is arranged above the mixing area, the partition plate blocks the light of the LED lamp, and a worm outlet gap is formed in the bottom of the culture box in the separation area to connect the culture box and the collection box for the pre-pupae to pass through.

[0006] As a further technical scheme, the two sides of the culture box extend outward to form a first extension edge and a second extension edge opposite to the first extension edge.

[0007] As a further technical scheme, the second extension edge is used for mounting the LED lamp, the LED lamp extends directly above the culture box and irradiates on the mixing area.

[0008] As a further technical solution, the partition plate is L-shaped.

[0009] As a further technical solution, the width of the emergence gap is 1 cm.

[0010] As a further technical solution, a step is arranged on the inner wall of the collection box for placing and supporting the incubator.

[0011] As a further technical solution, handles are arranged on both sides of the collection box.

[0012] The separation method of the above-mentioned black soldier fly larvae and pre-pupa high-efficiency separation device comprises the following steps:

[0013] Step one: load the larvae and pre-pupa of different instars mixed with feeding substrate into the mixing area of the incubator;

[0014] Step two: add water to the feed substrate, change the relative humidity of the feeding substrate, and turn on the LED light;

[0015] Step three: turn off the LED light, take out the pre-pupa collected by the collection box for processing into insect powder protein, and put the larvae of other instars back into feeding.

[0016] As a further technical solution, in step two, the relative humidity is 33-34%.

[0017] As a further technical solution, in step two, the duration of the LED light illumination is 30-50 min, and the light intensity is 5-20 lux.

[0018] The beneficial effects of the present application are:

[0019] 1. By utilizing the photophobic property of black soldier fly pre-pupa, an LED light is arranged to make the black soldier fly pre-pupa crawl out of the mixture and move along the two sides of the incubator, a partition plate is arranged to create a dark sheltered environment to guide the moving direction of the black soldier fly pre-pupa, and then the pre-pupa falls into the collection box through the emergence gap, the collection device does not need manual sorting, and the black soldier fly pre-pupa is continuously supplemented into the collection box;

[0020] 2. By changing the environmental humidity, the activity intensity of other instar black soldier flies is reduced, and they stay in the mixing area, the device has extremely high separation efficiency, is simple in design and easy to operate, the pre-pupa after separation is processed into insect powder protein, the quality is stable and controllable, and the larvae of other instars return to the feeding link, thereby improving the utilization rate of the substrate. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The present application is a three-dimensional structure Figure 1 .

[0022] Figure 2The structure diagram of the incubator in the application.

[0023] Figure 3 The structure diagram of the incubator in the application. Figure 2 .

[0024] Figure 4 The structure diagram of the incubator in the application.

[0025] Figure 5 The structure diagram of the incubator in the application.

[0026] Figure 6 The A-A sectional view of the incubator in the application. Figure 5 .

[0027] Explanation of reference signs: LED lamp 1, mounting frame 101, incubator 2, first extension edge 201, second extension edge 202, partition plate 203, worm outlet seam 204, separation seam 205, mixing area 206, separation area 207, collection box 3, handle 301, step 302. DETAILED DESCRIPTION

[0028] The application will be described in detail below with reference to the accompanying drawings:

[0029] Example 1: As shown in the accompanying drawings, this high-efficiency separation device for black soldier fly larvae and pre-pupae includes an LED lamp 1, a mounting frame 101, an incubator 2, a first extension edge 201, a second extension edge 202, a partition plate 203, a worm outlet seam 204, a separation seam 205, a mixing area 206, a separation area 207, a collection box 3, a handle 301, and a step 302. Figures 1-6 Referring to the accompanying drawings,

[0030] ,in the incubator 2, an L-shaped partition plate 203 is arranged, the upper edge of the partition plate 203 is horizontally fixed on the sidewall of the incubator 2, and the lower edge of the partition plate 203 is spaced apart from the bottom of the incubator 2 by a separation seam 205. The incubator 2 is divided into a mixing area 206 and a separation area 207 through the separation seam 205, wherein the mixing area 206 is located outside the partition plate 203 (i.e. the left side in the drawing), and the separation area 207 is located inside the partition plate 203 (i.e. the right side in the drawing). Figure 1 6 Figure 6 Figure 6

[0031] As Figure 2 , 3 ​​​As shown, the left and right sides of the incubator 2 extend outward to form a first extension edge 201 and a second extension edge 202 opposite the first extension edge 201, facilitating the movement of the incubator 2. Preferably, the extension length of the second extension edge 202 is greater than that of the first extension edge 201, and the LED lamp 1 is fixed on the second extension edge 202 by the mounting bracket 101, and is arranged above the incubator 2 to irradiate the mixed area 206. At the same time, the partition plate 203 shields the light of the LED lamp 1, so that the pupae spontaneously pass through the separation gap 205 and move into the dark separation area 207. The bottom of the incubator 2 in the separation area 207 is provided with an exit gap 204 for connecting the incubator 2 and the collection box 3, and the pupae in the separation area 207 will fall into the collection box 3 when moving. Preferably, as shown in Figure 3 , 4, the left and right sides of the inner wall of the collection box 3 are provided with steps 302, and the collection box 3 is inserted into the lower part of the incubator 2 and supported by the steps 302.

[0032] Preferably, the width of the exit gap 204 is 1 cm. The left and right sides of the collection box 3 are provided with handles 301 for facilitating the movement and insertion of the collection box 3.

[0033] The following describes a separation method embodiment of the above-mentioned high-efficiency separation device for black soldier fly larvae and pupae.

[0034] Example 2:

[0035] Step one: load different instar larvae and pupae mixed with feeding substrate into the mixed area 206 of the incubator 2, wherein the feeding substrate is 300g of wheat bran, 50 larvae and 50 pupae. The loading time is after sunset.

[0036] Step two: change the relative humidity of the feeding substrate to 33-34% by adding water, and turn on the LED lamp 1. The duration of the LED lamp 1 illumination is 45 minutes, and the light intensity is 6 lux.

[0037] Step three: turn off the LED lamp 1, remove the collection box 3 from the incubator 2, and the pupae obtained in the collection box 3 are 44, and the other instar larvae in the collection box 3 are 2. Take out the pupae collected in the collection box 3 for processing into worm powder protein, and put the other instar larvae back into the original feeding area.

[0038] Example 3:

[0039] Step one: load different instar larvae and pupae mixed with feeding substrate into the mixed area 206 of the incubator 2, wherein the feeding substrate is 300g of wheat bran, 50 larvae and 50 pupae. The loading time is after sunset.

[0040] Step two: Change the relative humidity of the rearing substrate to 33-34% by adding water, and turn on the LED light 1. The duration of the illumination of the LED light 1 is 45 min, and the light intensity is 12 lux.

[0041] Step three: Turn off the LED light 1, and pull out the collection box 3 from the incubator 2. There are 39 prepupae in the collection box 3, and 10 larvae of other instars in the collection box 3. Take out the prepupae collected in the collection box 3 for processing of the insect powder protein, and put the larvae of other instars back to the original rearing area.

[0042] Example 4:

[0043] Step one: Put the larvae and prepupae of different instars mixed with the rearing substrate into the mixing area 206 of the incubator 2, wherein the rearing substrate is 300 g of wheat bran, the larvae are 50, and the prepupae are 50. The time of putting into the incubator is after sunset.

[0044] Step two: Change the relative humidity of the rearing substrate to 33-34% by adding water, and turn on the LED light 1. The duration of the illumination of the LED light 1 is 45 min, and the light intensity is 60 lux.

[0045] Step three: Turn off the LED light 1, and pull out the collection box 3 from the incubator 2. There are 30 prepupae in the collection box 3, and 30 larvae of other instars in the collection box 3. Take out the prepupae collected in the collection box 3 for processing of the insect powder protein, and put the larvae of other instars back to the original rearing area.

[0046] Example 5:

[0047] Step one: Put the larvae and prepupae of different instars mixed with the rearing substrate into the mixing area 206 of the incubator 2, wherein the rearing substrate is 300 g of wheat bran, the larvae are 50, and the prepupae are 50. The time of putting into the incubator is at noon on a sunny day.

[0048] Step two: Change the relative humidity of the rearing substrate to 33-34% by adding water, and keep the LED light 1 off. Place the device under the condition of natural diffuse light indoors, and the duration is 45 min. The light intensity is measured to be 210 lux.

[0049] Step three: End the experiment. There are 40 prepupae in the collection box 3, and 23 larvae of other instars in the collection box 3.

[0050] According to the above examples, it can be seen that the device has the highest separation efficiency under dark conditions when the light intensity of the LED light 1 is 6 lux, and the duration of the illumination is 45 min. In addition, the separation effect of the device is poor when the light intensity is 60 lux, so the light intensity is set to 5-20 lux.

[0051] The present application has the advantages of improving efficiency and being simple and easy to operate, utilizes the light avoidance of black soldier fly prepupae, sets up LED lights to make the black soldier fly prepupae crawl out of the mixture and move along the two sides of the incubator, utilizes the dark shelter environment made by the partition plate to guide the moving direction of the black soldier fly prepupae, and then falls into the collection box through the emergence seam, the collection device does not need manual sorting, and continuously supplements the black soldier fly prepupae into the collection box. Meanwhile, the activity intensity of other instar black soldier flies is reduced by changing the environmental humidity, and the other instar black soldier flies stay in the mixing area. The device has extremely high separation efficiency, simple design and simple operation. The separated prepupae are processed into insect meal protein, and the quality is stable and controllable. The other instar larvae return to the feeding link, and the utilization rate of the substrate is improved.

[0052] It can be understood that equivalent replacements or changes of the technical solutions and inventive concepts of the present application made by those skilled in the art shall belong to the protection scope of the claims appended to the present application.

Claims

1. A method for efficient separation of black soldier fly larvae and pre-pupae, characterized by: The application discloses a high-efficiency separation device for black soldier fly larvae and pre-pupae, The high-efficiency separation device for black soldier fly larvae and pre-pupae comprises an LED lamp (1), a culture box (2) and a collection box (3) sleeved at the lower part of the culture box (2), a partition plate (203) is arranged in the culture box (2), the upper edge of the partition plate (203) is fixed on the side wall of the culture box (2), the lower edge of the partition plate (203) is provided with a separation gap (205) from the bottom of the culture box (2), and the separation gap (205) divides the culture box (2) into a mixing area (206) located on the outside of the partition plate (203) and a separation area (207) located on the inside of the partition plate (203); the LED lamp (1) is arranged above the mixing area (206), the partition plate (203) blocks the light of the LED lamp (1), and the bottom of the culture box (2) in the separation area (207) is provided with an exit gap (204) for connecting the culture box (2) and the collection box (3) and allowing the pre-pupae to pass through; The separation method comprises the following steps: Step one: the larvae and pre-pupae of different instars mixed with feeding materials are loaded into the mixing area (206) of the culture box (2); Step two: water is added to the feeding materials, the relative humidity of the feeding materials is changed, and the LED lamp (1) is turned on; Step three: the pre-pupae collected by the collection box (3) are taken out and used for processing of mealworm protein, and the larvae of other instars are put back for feeding; In step two, the relative humidity is 33-34%; in step two, the duration of the illumination of the LED lamp (1) is 30-50 min, and the illumination intensity is 5-20 lux.

2. The method of claim 1, wherein the black soldier fly larvae and pupae are efficiently separated by: The culture box (2) is outwardly extended at both sides to form a first extension edge (201) and a second extension edge (202) opposite to the first extension edge (201).

3. The method of claim 2, wherein the black soldier fly larvae and pupae are separated efficiently, characterized by: The second extension edge (202) is used for mounting the LED lamp (1), the LED lamp (1) extends upwards of the culture box (2) and irradiates the mixing area (206).

4. The method of claim 3, wherein the black soldier fly larvae and pupae are separated efficiently. The partition plate (203) is L-shaped.

5. The method of claim 4, wherein the black soldier fly larvae and pupae are separated efficiently. The exit gap (204) has a width of 1 cm.

6. The method of claim 5, wherein the black soldier fly larvae and pupae are separated efficiently. The inner wall of the collection box (3) is provided with a step (302) for placing and supporting the culture box (2).

7. The method of claim 6, wherein the black soldier fly larvae and pupae are separated efficiently. The collection box (3) is provided with handles (301) at both sides.

Images