Multi-layer screening device for separating hermetia illucens larvae from hermetia illucens sand

Abstract

The multilayer screening device comprises a stirring box and a screening box, a stirrer is arranged in the stirring box, a coarse screen mesh and a fine screen mesh are installed in the screening box, an inclined structure is arranged at the bottom of the stirring box, a discharging port is formed in one side of the inclined structure, and a discharging port is formed in the other side of the inclined structure. The fine screen is obliquely arranged below the discharging port, and the coarse screen is horizontally arranged and located below the fine screen. Insect sand to be screened and an adsorptive material are poured into a machine, larvae and fine fecula from different inlets at the same time, water-containing fecula wrapped by the adsorptive material passes through screens with different pore diameters and is finally discharged from different outlets, the adsorptive material wrapping the fecula can be separated from the fecula through subsequent processes such as dehydration and centrifugation, and recycling is achieved. The common defects of easy blockage, incomplete screening effect and the like in the existing screening method are overcome; the labor cost is further reduced; and the cyclic utilization of the materials is realized to a certain extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening devices, in particular to a multi-layer screening device for separating black soldier fly larvae from insect sand. Background Art

[0002] It is difficult to separate black soldier flies from their excrement during the current black soldier fly breeding process. Currently, there are three known technologies: the screening method uses a vibrating screen machine to separate the larvae from the excrement through the vibration principle; the excrement scraping method uses the principle that the soldier flies are afraid of light and drill downwards. All the black soldier flies drill under the excrement, and the excrement is all on the black soldier flies. The excrement is scraped off with a plastic shovel or a scraper; the water washing method puts the insects into a sieve and washes the excrement away with water.

[0003] In actual industrial production conditions, insect feces are mixed with residual feed (such as chicken manure), which further highlights the restrictive condition of high humidity. Screening separation equipment generally has technical problems such as easy clogging, large equipment size, time-consuming and labor-intensive, incomplete treatment effect, narrow applicable conditions, and high production costs. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A multi-layer screening device for separating black soldier fly larvae from worm sand comprises a mixing box and a screening box, wherein an agitator is built in the mixing box, and a coarse screen and a fine screen are installed in the screening box, an inclined structure is provided at the bottom of the mixing box, and a discharge port is opened on one side of the inclined structure, the fine screen is arranged obliquely below the discharge port, and the coarse screen is arranged horizontally and below the fine screen.

[0007] Connecting pieces are welded on both sides of the coarse screen and the fine screen and on the inner wall of the screening box, and a plug rod is connected through the connecting piece. Springs are arranged between the connecting pieces on the same plug rod, and the springs are sleeved on the plug rod.

[0008] A conveyor belt is provided in the screening box and below the coarse screen. The length of the conveyor belt is equal to the sum of the lengths of the coarse screen and the fine screen. Rotating shafts are provided at both ends of the conveyor belt. The rotating shafts are connected to the inner wall of the screening box by bearings.

[0009] One end of the rotating shaft located below the coarse screen passes through the screening box and is connected to a motor. A dial wheel is also fixedly mounted on the rotating shaft below the coarse screen. A plurality of dials are equidistantly arranged on the dial wheel. When the motor drives the rotating shaft to rotate, the dial wheel rotates synchronously. During the rotation process, the dial wheel intermittently drives the plug rod up and down to shake, thereby causing the coarse screen and the fine screen to vibrate and screen.

[0010] A scraper is provided on the upper surface of the conveyor belt and at the intersection of the coarse screen and the fine screen, and the scraper is fixed at the upper bottom inside the screening box and contacts the conveyor belt. The scraper is inclined, and a discharge plate is provided between the upper and lower belt surfaces of the conveyor belt. The discharge plate is located directly below the front end of the scraper, and the discharge plate passes through the inner wall of the screening box and extends to the outside.

[0011] A baffle is provided at one end inside the screening box. The baffle is an arc-shaped structure, and the end of the baffle is on the upper surface of the conveyor belt. A partition is installed at the other end inside the screening box, and the partition is located between the coarse screen and the conveyor belt.

[0012] A first feed inlet is provided in the center of the upper surface of the mixing box, and a second feed inlet is provided on the side panel of the mixing box. The insect sand is fed into the first feed inlet, and the adsorption material is fed into the second feed inlet. The adsorption material can be specifically cat litter.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The insect sand and the adsorbent material to be screened are poured into the machine from different entrances at the same time. The larvae, fine insect feces, and water-containing insect feces wrapped by the adsorbent material pass through screens with different apertures and are finally discharged from different outlets. The adsorbent material wrapped in the insect feces can be separated from the insect feces through subsequent processes such as dehydration and centrifugation, and recycled. This improves the common shortcomings of the current screening method, such as easy clogging and incomplete screening effect; further reduces the labor cost; and achieves the recycling of materials to a certain extent.

[0015] (2) The present application is provided with two screens, and the different apertures of the two screens are utilized to play different roles. Furthermore, in order to improve the screening efficiency of the screens, the present application provides an elastic structure on the screens, and utilizes the elastic structure to connect the screens to the screening box, so that the screens have elasticity and can achieve a vibration effect after being moved, so that the material falling on the screens can be better screened, and the material adhesion can be effectively reduced to a certain extent.

[0016] (3) The elastic structure in the present application is mainly composed of connecting plates, plug rods and springs. The two sides of the screen and the screening box are fixedly connected with connecting plates. The connecting plates on both sides of the screen are connected to the connecting plates on the screening box by using plug rods. The middle is padded with springs. When one of the screens is moved, it will move up and down on the plug rod to generate vibration. The springs are used for shock absorption at the same time. When one of the screens vibrates, its vibration force passes through the elastic structure to cause the other screen to vibrate synchronously.

[0017] (4) The particles screened by the sieves fall onto the conveyor belt provided in the present application. In order to save materials, two sieves are transported using the same conveyor belt. At the same time, in order to prevent the mixing of particles screened by two sieves with different apertures, the present application provides a scraper on the conveyor belt. The scraper is used to intercept the particles screened by the fine sieve and discharge them from one side. The conveyor belt continues to operate, driving the particles screened by the coarse sieve to continue to move forward.

[0018] (5) Furthermore, a paddle wheel is sleeved on one of the rotating shafts of the conveyor belt, and the paddle wheel moves synchronously with the rotation of the conveyor belt. When the paddle wheel rotates, the paddle arranged on it will intermittently resist the elastic component, thereby providing power for the screen to vibrate up and down, and at the same time, it can also reduce the manufacturing cost to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the overall structure diagram of the separation device.

[0020] Figure 2 A top view of the separation device.

[0021] Figure 3 This is the internal structure diagram of the screening box.

[0022] Figure 4 It is a cross-sectional view of the separation device.

[0023] Figure 5 This is the structural diagram of the screening mechanism.

[0024] Figure 6 for Figure 5 Enlarged structural diagram of point A in the middle.

[0025] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0026] 100, mixing box; 101, first feed inlet; 102, second feed inlet; 103, agitator; 200, screening box; 201, coarse screen; 202, fine screen; 203, conveyor belt; 203a, motor; 203b, scraper; 204, discharge plate; 205, baffle; 206, partition plate; 207, connecting piece; 208, plug rod; 209, dial wheel. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0030] See also Figure 1 and Figure 2 , is a multi-layer screening device for separating black soldier fly larvae from insect sand of this embodiment, comprising a mixing box 100 and a screening box 200. The mixing box 100 can fully mix the insect sand mixed with larvae with the adsorption material, and the screening box 200 can screen the insect sand contaminated with the adsorption material and the larvae. In order to fully mix the insect sand with the adsorption material, a stirrer 103 is built in the mixing box 100. The stirrer 103 can adopt a spiral structure or a fan-blade structure. Further, in order to perform better screening, a coarse screen 201 and a fine screen 202 are installed in the screening box 200. The coarse screen 201 is used to separate the black soldier fly larvae from the adsorption material attached thereto. The large pieces of worm sand and chicken manure residue are screened out, and the fine screen 202 is used to screen out the fine worm sand with low water content from other ingredients. An inclined structure is provided at the bottom of the mixing box 100, and a discharge port is provided on one side of the inclined structure. The fine screen 202 is located below the discharge port and is inclined to facilitate better discharge, thereby effectively preventing the mixture from accumulating at the bottom of the mixing box 100 to a certain extent. Since the coarse screen 201 plays a major screening role in the present application, the coarse screen 201 is arranged in a horizontal structure. At the same time, in order to enable the coarse screen 201 to better receive the material rolled down by the fine screen 202, the coarse screen 201 is installed below the fine screen 202.

[0031] exist Figure 4 and Figure 5In order to better screen the coarse screen 201 and the fine screen 202, the present embodiment further sets the coarse screen 201 and the fine screen 202 into a vibrating structure, and utilizes the vibration force to better screen the materials falling on the coarse screen 201 and the fine screen 202. Therefore, in the present embodiment, a connecting piece 207 is welded on both sides of the coarse screen 201 and the fine screen 202 and the inner wall of the screening box 200, and a plug rod 208 is connected to the connecting piece 207 through the connecting piece 207. The same plug rod 208 is connected to the connecting piece 207. There is a spring between each connecting piece 207 on 8, and the spring is sleeved on the plug rod 208. The connecting piece 207, the plug rod 208 and the spring form an elastic structure, and the elastic structure is used to connect the coarse screen 201 and the fine screen 202 to the screening box 200, so that the coarse screen 201 and the fine screen 202 have elasticity, and can achieve a vibration effect after being moved, so that the material falling on the coarse screen 201 and the fine screen 202 can be better screened, and the material adhesion can be effectively reduced to a certain extent.

[0032] exist Figure 3 , Figure 4 and in Figure 6 In this embodiment, a conveyor belt 203 is provided in the screening box 200 and below the coarse screen 201. The conveyor belt 203 is used to transport particles and larvae screened by the coarse screen 201 and the fine screen 202. The length of the conveyor belt 203 is equal to the sum of the lengths of the coarse screen 201 and the fine screen 202, so that the particles and larvae dropped by the coarse screen 201 and the fine screen 202 can be fully received. Both ends of the conveyor belt 203 are provided with a rotating shaft, and the rotating shaft is connected to the inner wall of the screening box 200 by a bearing to play a fixing role, and is located One end of the rotating shaft below the coarse screen 201 passes through the screening box 200 and is connected to a motor 203a. The motor 203a is used to drive the rotating shaft to rotate to realize the conveying work of the conveyor belt 203. A dial wheel 209 is also fixedly sleeved on the rotating shaft below the coarse screen 201. A plurality of paddles are equidistantly arranged on the dial wheel 209. When the motor 203a drives the rotating shaft to rotate, the dial wheel 209 rotates synchronously. During the rotation process, the dial wheel 209 intermittently drives the plug rod 208 to shake up and down, thereby causing the coarse screen 201 and the fine screen 202 to vibrate and screen.

[0033] exist Figure 4In order to save materials, the coarse screen 201 and the fine screen 202 are transported by the same conveyor belt 203. At the same time, in order to prevent the particles and larvae screened by the coarse screen 201 and the fine screen 202 from being remixed, a scraper 203b is provided on the upper surface of the conveyor belt 203 and at the intersection of the coarse screen 201 and the fine screen 202 in this embodiment. The scraper 203b is fixed to the upper bottom of the screening box 200 and contacts the conveyor belt 203. The scraper 203b is inclined. When the conveyor belt 203 is running, When the particles are screened by the fine screen 202, the scraper 203b is used to intercept and discharge them from one side. A discharge plate 204 is provided between the upper and lower belt surfaces of the conveyor belt 203 to receive the particles discharged by blocking the scraper 203b. In order to better receive the particles, the discharge plate 204 is arranged directly below the front end of the scraper 203b. The discharge plate 204 extends through the inner wall of the screening box 200 to the outside, which is convenient for the staff to collect the particles and avoid the accumulation of particles inside the device. The structure can discharge the screened particles in time.

[0034] exist Figure 3 In order to prevent the mixed material dropped through the mixing box 100 from splashing and falling into the gap of the screening box 200 when falling on the fine screen 202, a baffle 205 is provided at one end of the screening box 200 in this embodiment. The baffle 205 is an arc-shaped structure to block the gap, and the end of the baffle 205 is on the upper surface of the conveyor belt 203. A partition plate 206 is installed at the other end of the screening box 200. The partition plate 206 is located between the coarse screen 201 and the conveyor belt 203. The partition plate 206 can be used to prevent the material on the coarse screen 201 from falling during the vibration process, thereby remixing with the material screened by the coarse screen 201.

[0035] exist Figure 1 and Figure 4 In the mixing box 100, a first feed port 101 is provided in the center of the upper surface, and insect sand is put in through the first feed port 101. A second feed port 102 is provided on the side panel of the mixing box 100, and adsorption material is put in through the second feed port 102. The adsorption material can be cat litter. The insect sand to be screened and the adsorption material are put into the mixing box 100 from the first feed port 101 and the second feed port 102 respectively at the same time. After the larvae and fine insect feces are wrapped by the adsorption material, the larvae are dried for easy growth. The insect sand and the adsorption material are mixed to reduce moisture on the one hand, and on the other hand, they are combined into larger spheres for easy separation. The adsorption material wrapped in the insect feces can be separated from the insect feces through subsequent processes such as dehydration and centrifugation, and recycled, which improves the common shortcomings of the current screening method, such as easy clogging and incomplete screening effect. It further reduces the labor cost and achieves the recycling of materials to a certain extent.

[0036] In summary: In this embodiment, the insect sand enters through the first feed port 101, and the adsorbent material enters through the second feed port 102. After the various materials enter the mixing box 100, the materials in the mixing box 100 are stirred and mixed by the agitator 103. A discharge port is provided at the bottom of the mixing box 100, and the discharge port can be equipped with an electric valve for control. The stirred mixture first falls onto the fine screen 202 through the discharge port. The fine screen 202 is an inclined structure, which can accelerate the forward rolling of the material. During this process, the conveyor belt 203 is started. During the start-up process of the conveyor belt 203, the dial wheel 209 sleeved on the rotating shaft can dial the plug rod 208 installed on the side of the coarse screen 201. Under the action of the spring, the plug rod 208 can make the coarse screen 201 and the fine screen 202 generate vibration force to effectively accelerate the screening, and the particles screened by the fine screen 202 fall on the conveyor belt 203. The particles are transported forward by the conveyor belt 203 and are blocked when they move to the scraper 203b. At the same time, the inclined scraper 203b makes the particles move to one side and fall onto the discharge plate 204 for collection. The material that rolls down from the fine screen 202 to the coarse screen 201 is further vibrated to make the larvae fall onto the conveyor belt 203, and is further transported forward by the conveyor belt 203 for easy collection. The large spheres that remain on the coarse screen are the combination of insect sand and adsorbent material, which will eventually fall onto the partition plate for easy collection. In this embodiment, after the larvae and fine insect feces are wrapped by the adsorbent material, the larvae are dried for easy growth. The mixture of insect sand and adsorbent material reduces moisture on the one hand, and combines into larger spheres for easy separation on the other hand. The adsorbent material wrapped with insect feces can be separated from the insect feces through subsequent processes such as dehydration and centrifugation, and recycled, which improves the common shortcomings of the current screening method, such as easy clogging and incomplete screening effect. The labor cost is further reduced; and the recycling of materials is achieved to a certain extent.

[0037] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A multi-layer screening device for separating black soldier fly larvae from insect sand, comprising a stirring box (100) and a screening box (200), wherein a stirrer (103) is built into the stirring box (100), and a coarse screen (201) and a fine screen (202) are installed in the screening box (200), Features: The bottom of the mixing box (100) is provided with an inclined structure, and a discharge port is provided on one side of the inclined structure. The fine screen (202) is arranged inclined below the discharge port, and the coarse screen (201) is arranged horizontally and below the fine screen (202).

2. The multi-layer screening device for separating black soldier fly larvae from insect sand according to claim 1, characterized in that: Connecting pieces (207) are welded on both sides of the coarse screen (201) and the fine screen (202) and on the inner wall of the screening box (200), and a plug rod (208) is connected through the connecting piece (207). A spring is provided between each connecting piece (207) on the same plug rod (208), and the spring is sleeved on the plug rod (208).

3. The multi-layer screening device for separating black soldier fly larvae from insect sand according to claim 2, characterized in that: A conveyor belt (203) is provided in the screening box (200) and below the coarse screen (201); the length of the conveyor belt (203) is equal to the sum of the lengths of the coarse screen (201) and the fine screen (202); rotating shafts are provided at both ends of the conveyor belt (203); and the rotating shafts are connected to the inner wall of the screening box (200) by means of bearings.

4. The multi-layer screening device for separating black soldier fly larvae from insect sand according to claim 2 or 3, characterized in that: One end of the rotating shaft located below the coarse screen (201) passes through the screening box (200) and is connected to a motor (203a), and a dial wheel (209) is fixedly sleeved on the rotating shaft located below the coarse screen (201), and a plurality of dials are equidistantly arranged on the dial wheel (209). When the motor (203a) drives the rotating shaft to rotate, the dial wheel (209) rotates synchronously, and the dial wheel (209) intermittently drives the insertion rod (208) to shake up and down during the rotation process, thereby causing the coarse screen (201) and the fine screen (202) to vibrate and screen.

5. The multi-layer screening device for separating black soldier fly larvae from insect sand according to claim 3, characterized in that: A scraper (203b) is provided on the upper surface of the conveyor belt (203) and at the intersection of the coarse screen (201) and the fine screen (202), and the scraper (203b) is fixed at the upper bottom of the screening box (200) and in contact with the conveyor belt (203). The scraper (203b) is arranged in an inclined manner. A discharge plate (204) is provided between the upper and lower belt surfaces of the conveyor belt (203), and the discharge plate (204) is located directly below the front end of the scraper (203b). The discharge plate (204) penetrates the inner wall of the screening box (200) and extends to the outside.

6. The multi-layer screening device for separating black soldier fly larvae from insect sand according to claim 5, characterized in that: A baffle (205) is provided at one end inside the screening box (200), the baffle (205) is an arc-shaped structure, and the end of the baffle (205) is on the upper surface of the conveyor belt (203), and a partition plate (206) is installed at the other end inside the screening box (200), and the partition plate (206) is located between the coarse screen (201) and the conveyor belt (203).

7. The multi-layer screening device for separating black soldier fly larvae from insect sand according to claim 1, characterized in that: A first feed inlet (101) is provided in the center of the upper surface of the mixing box (100), and a second feed inlet (102) is provided on the side panel of the mixing box (100).

8. The multi-layer screening device for separating black soldier fly larvae from insect sand according to claim 7, characterized in that: The insect litter is fed into the first feed port (101), and the adsorption material is fed into the second feed port (102). The adsorption material may specifically be cat litter.

Images