A black soldier fly larva and worm sand separation system based on photo-thermal double drive

Abstract

The utility model relates to agricultural waste treatment equipment technical field especially based on light and heat dual drive's black soldier fly larvae and insect sand separation system, include: frame, upper layer separation bin and upper layer separation bin. Upper layer separation bin sets up in the frame top, including the netted conveyer belt of horizontal operation, the flattening scraping thin device of feed end, the light and heat source above netted conveyer belt and the screen mesh anti -blocking device on the return path, the lower layer collection bin sets up in the lower layer separation bin below, including the entity conveyer belt of horizontal operation. The flattening scraping thin device will viscous or too thick insect sand even spread thin, promote light and heat penetrability and larvae drill out efficiency, the screen mesh anti -blocking device passes through the brush penetration and cleans the conveyer belt screen mesh hole, avoids the screen mesh blockage and leads to the conveyer belt shutdown. The above based on light and heat dual drive's black soldier fly larvae and insect sand separation system can realize the efficient and stable separation of larvae and insect sand.

Description

Technical Field

[0001] This utility model relates to the field of agricultural waste treatment equipment technology, and in particular to a black soldier fly larvae and insect-sand separation system based on photothermal dual drive. Background Technology

[0002] Currently, after black soldier fly larvae process organic waste, it is necessary to efficiently separate the grown larvae from the remaining insect sand so that the larvae and the remaining insect sand can be processed and utilized separately in the future.

[0003] However, the separation methods commonly used in the industry have significant shortcomings. The most primitive manual screening is not only labor-intensive, inefficient, and creates a harsh working environment, but it also easily causes mechanical damage to larvae during operation. Simple mechanical vibrating screens are also ineffective in practical applications, especially when dealing with highly moist and sticky insect-sand mixtures. Larvae often stick to the moist excrement and cannot pass through the screen holes, resulting in incomplete separation and easy clogging of the screen. The single-light repelling method, which utilizes the larvae's photophobia, although based on a different principle, also faces efficiency bottlenecks. This method is slow, and when the insect-sand layer is thick or highly sticky, larvae have difficulty emerging from the substrate, resulting in a large number of individuals remaining trapped, ultimately leading to low separation efficiency. Furthermore, due to the high stickiness of the insect-sand, it easily adheres to the conveyor belt return path, causing blockages and shutdowns. Therefore, existing methods cannot meet the needs of large-scale processing. Utility Model Content

[0004] The problem this invention aims to solve is to provide a highly efficient and stable system for separating black soldier fly larvae from sand, addressing the aforementioned shortcomings. The technical solution is as follows:

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: a black soldier fly larvae and insect-sand separation system based on photothermal dual-drive, comprising:

[0006] frame;

[0007] Upper separation chamber: Located above the frame, it includes a horizontally running mesh conveyor belt, a flattening and scraping device located at the feed inlet of the mesh conveyor belt, a photothermal source located above the mesh conveyor belt, and a screen anti-clogging device located on the return path of the mesh conveyor belt, wherein the screen anti-clogging device includes a brush that contacts the mesh conveyor belt.

[0008] Lower collection chamber: Located below the upper separation chamber, it includes a horizontally running solid conveyor belt, which is spaced apart from the upper mesh conveyor belt.

[0009] In one embodiment, the photothermal source is composed of multiple sets of incandescent lamps.

[0010] In one embodiment, a heat insulation cover is provided on the outside of the photothermal source.

[0011] In one embodiment, the flattening and thinning device is a rotating roller brush.

[0012] In one embodiment, the bristles of the brush can penetrate the mesh openings of the mesh conveyor belt.

[0013] In one embodiment, the screen anti-clogging device further includes a scraper.

[0014] In one embodiment, a temperature difference of ≥5°C is formed between the upper separation chamber and the lower collection chamber.

[0015] In one embodiment, the power of the incandescent lamp is configured to bring the surface temperature of the material to 35-45°C.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: The upper separation chamber simultaneously provides light stimulation and heat stress through a photothermal source, combined with a temperature difference of ≥5℃ between the upper and lower chambers to form a dual biological driving force. Compared with single light or mechanical separation methods, this significantly improves the larval drilling speed and effectively solves the problems of incomplete insect-sand separation and low efficiency in traditional methods. The flattening and thinning device evenly spreads viscous or excessively thick insect sand, ensuring that the heat from the photothermal source is uniform and fully irradiates all parts of the insect sand, avoiding insufficient heat at the bottom layer due to an excessively thick layer, thus more effectively promoting larval stimulation. After being stimulated by heat, the larvae escape downwards and drill through the screen, significantly improving light and heat penetration and larval emergence efficiency, while reducing the number of individuals trapped. The screen anti-clogging device on the return path of the mesh conveyor belt uses a brush to penetrate and clean the screen holes, avoiding screen blockage caused by wet insect sand sticking to the conveyor net, and achieving continuous operation without downtime. In addition, by precisely controlling the surface temperature of the material within the biologically active range of 35-45℃, the mortality rate of larvae is reduced. The fully automated design significantly reduces labor costs, ensuring separation efficiency and larval integrity while meeting the low-carbon requirements of large-scale agricultural waste treatment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of a black soldier fly larvae and insect-sand separation system according to one embodiment.

[0019] Figure 2 This is an enlarged structural schematic diagram of one embodiment.

[0020] Reference numerals: 1: Frame; 2: Upper separation chamber; 3: Lower collection chamber; 4: Mesh conveyor belt; 5: Solid conveyor belt; 6: Flattening and scraping device; 7: Heat source; 8: Insulation cover; 9: Scraper; 10: Brush; 11: Insect sand collection box; 12: Larval collection box. Detailed Implementation

[0021] To facilitate understanding of this utility model, the following description will be provided in more comprehensive and detailed manner with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0022] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0023] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0024] Please see Figure 1-2 One embodiment of the black soldier fly larvae and insect-sand separation system mainly includes: a frame 1, an upper separation chamber 2, and a lower collection chamber 3. Specifically, the frame 1 is constructed by welding angle steel and steel plates. The upper separation chamber 2, located above the frame 1, includes a horizontally running mesh conveyor belt 4. The mesh conveyor belt 4 is made of 304 stainless steel woven mesh with a mesh diameter of 6-8mm. A leveling and thinning device 6 is provided above the feed inlet to evenly spread viscous or excessively thick insect-sand on the mesh conveyor belt 4. A light and heat source 7 is provided above the mesh conveyor belt 4 to provide light and heat to stimulate larvae to escape and move. A screen anti-clogging device on the return path of the mesh conveyor belt 4 cleans the screen holes of the mesh conveyor belt 4 with a brush 10 in contact with the mesh conveyor belt 4 to keep the mesh conveyor belt 4 running smoothly. An insect-sand collection box 11 is provided at the discharge end of the mesh conveyor belt 4 to collect residual insect-sand. The lower collection chamber 3 located below the frame 1 includes a horizontally running solid conveyor belt 5. The solid conveyor belt 5 maintains a distance of ≤50 cm from the upper mesh conveyor belt 4 to ensure that the larvae fall safely. A larva collection box 12 is provided at the end of the solid conveyor belt 5 in the conveying direction to collect the fallen larvae.

[0025] Specifically, the heat source 7 consists of multiple sets of 100W incandescent lamps, spaced 30-50 cm apart, evenly distributed above the conveyor belt. The power of the incandescent lamps is configured to raise the surface temperature of the material to 35-45℃.

[0026] Preferably, the heat source 7 is provided with an insulation cover 8 to reduce heat loss.

[0027] Specifically, the flattening and thinning device 6 is a rotating roller brush.

[0028] Specifically, the bristles of the brush can penetrate the mesh holes of the mesh conveyor belt 4, making the cleaning more thorough.

[0029] Specifically, the screen anti-clogging device also includes a scraper 9, which can forcefully scrape away large clumps of insect sand adhering to the screen of the mesh conveyor belt 4, thereby reducing the cleaning amount of the brush 10 and more effectively preventing screen clogging caused by wet insect sand sticking to the mesh conveyor belt 4.

[0030] Specifically, a temperature difference of ≥5℃ is formed between the upper separation chamber 2 and the lower collection chamber 3, with the temperature of the upper separation chamber 2 maintained at 40-45℃ and the temperature of the lower collection chamber 3 maintained at 25-30℃.

[0031] The above-mentioned black soldier fly larvae and insect-sand separation system is used as follows: When the insect-sand mixture is conveyed to the upper mesh conveyor belt 4 through the inlet, the mixture is spread into a uniform thin layer with a thickness of no more than 3 cm by a rotating roller brush set above the inlet. Then, the surface of the material is heated by an incandescent lamp group to a surface temperature of 35-45℃. Under this photothermal effect, the larvae are driven downward and penetrate the 6-8 mm aperture screen. The larvae that penetrate the screen fall to the lower solid conveyor belt 5, which collects and transports the larvae to the larva collection box 12. The remaining insect sand is discharged into the insect sand collection box 11 from the outlet of the upper mesh conveyor belt 4. During the return trip of the mesh conveyor belt 4, the large clumps of insect sand adhering to the mesh surface are first forcefully peeled off by the scraper 9. Then, the bristles of the brush 10 penetrate the screen holes to remove the fine particles and insect remains that are clogging the holes, ensuring the continuous smooth operation of the mesh conveyor belt 4.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A dual light-thermal driven system for separating black soldier fly larvae from frass, characterized in that, The application relates to a device for separating and collecting materials, comprising: a frame; an upper separation bin arranged above the frame, comprising a horizontally running mesh conveyor belt, a flattening and thinning device arranged at the feeding port of the mesh conveyor belt, a light heat source arranged above the mesh conveyor belt, and a screen anti-blocking device arranged on the return path of the mesh conveyor belt, wherein the screen anti-blocking device comprises a brush in contact with the mesh conveyor belt; a lower collecting bin arranged below the upper separation bin, comprising a horizontally running solid conveyor belt, wherein the solid conveyor belt is arranged in a spaced manner with the upper mesh conveyor belt.

2. The Hermetia illucens larvae and larvae frass separation system of claim 1, wherein, The light heat source is composed of multiple groups of incandescent lamps.

3. The Hermetia illucens larvae and larvae frass separation system of claim 1, wherein, The light heat source is externally provided with a heat preservation cover.

4. The Hermetia illucens larvae and larvae frass separation system of claim 1, wherein, The flattening and thinning device is a rotary roller brush.

5. The Hermetia illucens larvae and larvae frass separation system of claim 1, wherein, The bristles of the brush can penetrate the screen holes of the mesh conveyor belt.

6. The Hermetia illucens larvae and larvae frass separation system of claim 1, wherein, The screen anti-blocking device further comprises a scraper.

7. The Hermetia illucens larvae and larvae frass separation system of claim 1, wherein, A temperature difference of greater than or equal to 5 DEG C is formed between the upper separation bin and the lower collecting bin.

8. The Hermetia illucens larvae and larvae frass separation system of claim 2, wherein, The power of the incandescent lamp is configured to make the surface temperature of the material reach 35-45 DEG C.

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