A screening device for transformed insect larvae after a residue film recovery mixture

Abstract

The application discloses a screening device for insect larva transformed residual film recovery mixture, and relates to the technical field of agricultural machinery. The screening device comprises a rack, a roller screening mechanism rotatably connected to the rack, a vibrating screening mechanism connected to the rack below the roller screening mechanism, a conveying mechanism in communication with a discharge port of the roller screening mechanism, a tail bin provided at an end of the conveying mechanism away from the vibrating screening mechanism, and a residual film adsorption mechanism provided above the conveying mechanism and used for adsorbing residual film. The roller screening mechanism, the vibrating screening mechanism and the residual film adsorption mechanism can realize multiple screening of the mixture, and can effectively separate insect sand, sandy soil, residual film and larvae generated after the insect larva transformed residual film recovery mixture.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural machinery, and more particularly to a screening device for insect larvae to transform residual film recycling mixture. BACKGROUND

[0002] In view of the white pollution problem caused by residual film, a large number of residual film recycling machines have been developed in China. Investigation shows that the existing residual film recycling device has basically solved the problem of residual film in farmland. However, due to the high impurity content of the residual film recycled by the existing residual film recycling device, the residual film is easily mixed with straw or soil, and the film and the straw are difficult to separate, so that the film and the straw mixture after treatment is randomly placed, landfilled or even burned, which not only causes secondary pollution to the environment, but also causes great waste of resources.

[0003] At present, the separation methods of residual film mixture are mainly air separation method and water washing separation method. The air separation method mainly uses the principle of different suspension speeds of mixed materials in air to separate them. The cost is low and the separation speed is fast, but due to the characteristics of easy entanglement of residual film and straw, the separation effect of residual film and straw is poor. The water washing separation method separates different materials according to the principle of different floating characteristics of different materials in liquid. The separated residual film is relatively clean, but the device size is huge, the water resource is wasted seriously and the cost is high. At the same time, the existing mechanical separation device cannot effectively separate the residual film.

[0004] Investigation shows that insects can well transform the straw in the residual film recycling mixture in farmland. Insects larvae belong to saprophytic insects, and throughout the larval period, they live on straw. The use of insects larvae can solve the problem of difficult separation of residual film and straw in residual film recycling mixture. The insect sand produced by insects larvae can be directly used as organic fertilizer, and the larvae themselves can be used as medicine, protein feed and cosmetic raw material, etc., creating huge economic benefits.

[0005] Therefore, how to provide a screening device for solving the problem of difficult separation of residual film and straw in residual film recycling mixture by using insect larvae is a problem to be solved by those skilled in the art. SUMMARY

[0006] Therefore, the present application provides a screening device for insect larvae to transform residual film recycling mixture, which aims to solve the problems in the background art and realize efficient and rapid separation of residual film and straw in residual film recycling mixture.

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0008] A screening device for insect larvae to transform residual film recycling mixture, comprising:

[0009] a rack;

[0010] A drum screening mechanism is rotatably connected to the frame;

[0011] A vibrating screening mechanism is connected to the frame below the drum screening mechanism;

[0012] A conveying mechanism is used to receive and convey the oversize material output by the drum screening mechanism, and an end of the conveying mechanism away from the vibrating screening mechanism is provided with a tail bin;

[0013] A residual film adsorption mechanism is provided above the conveying mechanism, and is used to adsorb and collect residual films in the oversize material.

[0014] Further, the frame comprises a rigid frame, a bottom support rod, and a material blocking plate, the bottom support rod is connected to the bottom of the rigid frame in a liftable manner, the material blocking plate is fixedly connected to the top of the rigid frame, and the material blocking plate is located on both sides of the drum screening mechanism, and the vibrating screening mechanism is arranged in the rigid frame.

[0015] Further, the drum screening mechanism comprises a drum screen and a drum power assembly, the drum screen is rotatably connected to the frame, and the drum power assembly is fixedly connected to the frame and in transmission connection with the drum screen.

[0016] Further, one end of the outer wall of the drum screen is provided with a gear ring, and the other end of the drum screen is provided with a supporting roller ring, the gear ring is in transmission connection with the drum power assembly, and the supporting roller ring is rotatably connected to the frame.

[0017] Further, the vibrating screening mechanism comprises a vibrating screen, a crankshaft, a connecting rod, and a vibrating power assembly, the crankshaft is rotatably connected to the frame, the crankshaft is in transmission connection with the vibrating power assembly, the vibrating screen is hingedly connected to the frame, one end of the connecting rod is in transmission connection with the crankshaft, and the other end of the connecting rod is hingedly connected to the vibrating screen and transmits power.

[0018] Further, a sand and soil collecting plate and a connecting crank are further included, the sand and soil collecting plate is arranged below the vibrating screen and parallel to the vibrating screen, a middle portion of the connecting crank is hingedly connected to the frame, one end of the connecting crank is hingedly connected to the side wall of the vibrating screen, and the other end of the connecting crank is hingedly connected to the side wall of the sand and soil collecting plate, and a plurality of connecting cranks are arranged.

[0019] Further, the conveying mechanism comprises a first conveyor and a second conveyor, the first conveyor is used for receiving the mixture after the screening of the drum screening mechanism, the first conveyor is arranged obliquely, and the second conveyor is arranged horizontally below the top end of the first conveyor and used for receiving the larvae thrown up on the first conveyor.

[0020] Further, the residual film adsorption mechanism comprises a residual film screening power assembly, a perforated conveying belt, a film bundling box, a support frame and a film adsorption mechanism, the perforated conveying belt is arranged above the first conveyor and the second conveyor, the perforated conveying belt is arranged on the support frame, the residual film screening power assembly is fixedly connected with the support frame, the residual film screening power assembly is in transmission connection with the perforated conveying belt, the film bundling box is arranged on both sides of the first conveyor and the second conveyor and used for receiving the residual film adsorbed by the perforated conveying belt, and one end of the film adsorption mechanism is arranged in the perforated conveying belt and used for adsorbing the residual film on the perforated conveying belt.

[0021] Further, the residual film adsorption mechanism comprises a residual film adsorption mechanism, a perforated conveying belt, a film bundling box, a support frame and a film adsorption mechanism, the perforated conveying belt is arranged above the first conveyor and the second conveyor, the perforated conveying belt is arranged on the support frame, the residual film screening power assembly is fixedly connected with the support frame, the residual film screening power assembly is in transmission connection with the perforated conveying belt, the film bundling box is arranged on both sides of the first conveyor and the second conveyor and used for receiving the residual film adsorbed by the perforated conveying belt, and one end of the film adsorption mechanism is arranged in the perforated conveying belt and used for adsorbing the residual film on the perforated conveying belt.

[0022] Further, the film adsorption mechanism comprises an air inlet, a negative pressure fan and a flow guide pipe, the air inlet extends into the perforated conveying belt, one end of the flow guide pipe is in communication with the air inlet, and the other end of the flow guide pipe is in communication with the negative pressure fan.

[0023] Via the technical solution, compared with the prior art, the application provides a screening device for insect larvae transformed residual film recycling mixture. By arranging the drum screening mechanism, the vibration screening mechanism and the residual film adsorption mechanism, the mixture can be screened multiple times, and the insect sand, the sand, the residual film and the larvae generated after the insect larvae transformed residual film recycling mixture can be effectively separated. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0025] Figure 1 The overall structure schematic diagram provided by the present application;

[0026] Figure 2 The drum screening structure schematic diagram provided by the present application;

[0027] Figure 3 The vibration screen screening mechanism and the vibration power assembly structure schematic diagram provided by the present application are shown in the figure.

[0028] Figure 4 The first conveyor and the second conveyor and the residual film adsorption mechanism schematic diagram provided by the present application are shown in the figure.

[0029] Figure 5 The film suction mechanism structure schematic diagram provided by the present application is shown in the figure.

[0030] Wherein: 1 is the rack; 101 is the rigid frame; 102 is the bottom support rod; 103 is the material blocking plate; 2 is the drum screening mechanism; 21 is the drum screen; 211 is the gear ring; 212 is the supporting wheel ring; 22 is the drum power assembly; 23 is the feeding hopper; 24 is the brush; 25 is the spiral blade; 3 is the vibration screening mechanism; 31 is the vibration screen; 32 is the connecting rod; 33 is the vibration power assembly; 34 is the sand and soil collecting plate; 35 is the connecting crank; 4 is the conveying mechanism; 41 is the first conveyor; 42 is the second conveyor; 5 is the residual film adsorption mechanism; 51 is the residual film screening power assembly; 52 is the perforated conveying belt; 53 is the film bundling box; 54 is the support frame; 55 is the film suction mechanism; 551 is the air inlet; 552 is the negative pressure fan; 553 is the flow guide pipe; 56 is the film scraping plate; 6 is the tail material box. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] Referring to Figures 1-5 The embodiment of the present application discloses a screening device for converting residual film recovery mixture after insect larvae, comprising:

[0033] The rack 1 comprises a rigid frame 101, a bottom support rod 102 and a material blocking plate 103. The bottom support rod 102 is connected to the bottom of the rigid frame 101 in a lifting manner. The material blocking plate 103 is fixedly connected to the top of the rigid frame 101. The material blocking plate 103 is located on both sides of the drum screening mechanism 2. The vibration screening mechanism 3 is arranged in the rigid frame 101. In this embodiment, the material blocking plate 103 is arranged on the top of the rigid frame 101 along the length direction of the rigid frame 101. Four bottom support rods 102 are arranged on the four corners of the bottom of the rigid frame 101. The height and the inclination angle of the rack 1 can be controlled by the bottom support rods 102.

[0034] The drum screening mechanism 2 is rotatably connected to the frame 1; in this embodiment, the drum screening mechanism 2 is used to screen out sand and insect sand from the mixture.

[0035] Vibration screening mechanism 3 is connected to the frame 1 below the drum screening mechanism 2; in this embodiment, vibration screening mechanism 3 can further separate sand and insect sand in the mixture.

[0036] The conveying mechanism 4 is used to receive and convey the oversize material output by the drum screening mechanism 2. The end of the conveying mechanism 4 away from the vibrating screening mechanism 3 is provided with a tail hopper 6. In this embodiment, the conveying mechanism 4 can convey the mixture of sand and insect sand that has been screened out to the residual film adsorption mechanism 5 for residual film screening.

[0037] The residual film adsorption mechanism 5 is disposed above the conveying mechanism 4. The residual film adsorption mechanism 5 is used to adsorb and collect residual film from the sieve material. In this embodiment, the residual film adsorption mechanism 5 is used to screen the residual film in the mixture and separate the residual film from the larvae.

[0038] The drum screening mechanism 2 includes a drum screen 21 and a drum power assembly 22. The drum screen 21 is rotatably connected to the frame 1, and the drum power assembly 22 is fixedly connected to the frame 1 and is driven by the drum screen 21. A gear ring 211 is provided on the outer wall of one end of the drum screen 21, and a support roller ring 212 is provided on the other end of the drum screen 21. The gear ring 211 is driven by the drum power assembly 22, and the support roller ring 212 is rotatably connected to the frame 1. In this embodiment, the support roller ring 212 and the gear ring 211 are respectively provided at the front and rear ends of the drum screen 21. Two support rollers and a gear support roller are respectively provided on the frame 1 at the lower end of the support roller ring 212 and the gear ring 211. The gear support rollers are provided on both sides of the gear ring 211 and mesh with it. The drum power assembly 22 is installed on the upper right side of the front end of the frame 1 and rotates the drum screen 21 along its own axis through a drive connection with the gear support rollers.

[0039] In this embodiment, the drum screening mechanism 2 is also equipped with a feeding hopper 23, a brush 24, and a spiral blade 25. The feeding hopper 23 is fixedly connected to the front end of the frame 1 and communicates with the drum screen 21 at the rear. The brush 24 is set obliquely above the drum screen 21 along the axis of the drum screen 21. The brush 24 is used to clean the outer surface of the drum screen 21 and prevent the drum screen 21 from clogging. The spiral blade 25 is fixedly connected to the inner wall of the drum screen 21. By setting the spiral blade 25, the mixture entering the drum screen 21 can be continuously pushed out from the rear end of the drum screen 21, thereby improving its screening efficiency. Since the frame 1 is equipped with height-adjustable bottom support rods 102 at the four corners, the height of the drum screen 21 can be adjusted, which facilitates the addition of a mixing material conveyor at the front end of the feeding hopper 23 to ensure that the mixing material is fed in evenly.

[0040] The vibrating screening mechanism 3 includes a vibrating screen 31, a crankshaft, a connecting rod 32, and a vibrating power assembly 33. The crankshaft is rotatably connected to the frame 1 and is driven by the vibrating power assembly 33. The vibrating screen 31 is hinged to the frame 1. One end of the connecting rod 32 is driven by the crankshaft, and the other end of the connecting rod 32 is hinged to the vibrating screen 31 and transmits power. It also includes a sand collecting plate 34 and connecting cranks 35. The sand collecting plate 34 is positioned below and parallel to the vibrating screen 31. The middle part of the connecting crank 35 is hinged to the frame 1, one end of the connecting crank 35 is hinged to the side wall of the vibrating screen 31, and the other end of the connecting crank 35 is hinged to the side wall of the sand collecting plate 34. Multiple connecting cranks 35 are provided. In this embodiment, the vibration power assembly 33 is the same as the screen cylinder power assembly 22. The vibration power assembly 33 drives the crankshaft to rotate, thereby causing the vibrating screen 31 to vibrate. The connecting crank 35 connects the vibrating screen 31, the sand collection plate 34 and the frame 1. Through the action of the bearing inside the connecting crank 35, while the vibrating screen 31 drives the sand collection plate 34 to generate intermittent vibration, it can also avoid vibration interference to the frame 1, so as to prevent affecting the rotation of the drum screen 21 along its own axis.

[0041] The conveying mechanism 4 includes a first conveyor 41 and a second conveyor 42. The first conveyor 41 is used to receive the mixture after screening by the drum screening mechanism 2. The first conveyor 41 is inclined, and the second conveyor 42 is horizontally positioned below the top of the first conveyor 41. The second conveyor 42 is used to receive the larvae thrown up by the first conveyor 41. In this embodiment, the first conveyor 41 is driven by a vibration power component, and the second conveyor 42 is driven by a conveyor power component. The first conveyor 41 is used to convey the mixture of residual film and larvae, and the second conveyor 42 is used to convey the separated larvae.

[0042] The residual film adsorption mechanism 5 includes a residual film screening power assembly 51, a perforated conveyor belt 52, a film bundle box 53, a support frame 54, and a film suction mechanism 55. The perforated conveyor belt 52 is positioned above the connection between the first conveyor 41 and the second conveyor 42 and is mounted on the support frame 54. The residual film screening power assembly 51 is fixedly connected to the support frame 54 and is drively connected to the perforated conveyor belt 52. The film bundle box 53 is located on both sides of the first conveyor 41 and the second conveyor 42 and is used to receive the residual film adsorbed by the perforated conveyor belt 52. One end of the film suction mechanism 55 extends into the perforated conveyor belt 52 to adsorb the residual film onto the perforated conveyor belt 52. The residual film adsorption mechanism 5 also includes a scraper plate 56, which is located at the inlet of the film bundle box 53 and contacts the working surface of the perforated conveyor belt 52. The scraper plate 56 is used to scrape the residual film on the perforated conveyor belt 52 into the film bundle box 53. In this embodiment, the film suction mechanism 55 includes an air inlet 551, a negative pressure fan 552, and a guide pipe 553. The air inlet 551 extends into the perforated conveyor belt 52, and one end of the guide pipe 553 is connected to the air inlet 551, while the other end is connected to the negative pressure fan 552. The mixture of larvae and residual film can be thrown high by the first conveyor 41, which can adsorb the residual film in the mixture onto the outer surface of the perforated conveyor belt 52. When the residual film rotates with the perforated conveyor belt 52 to the position of the scraper plate 56, it leaves the perforated conveyor belt 52 under the action of the scraper plate 56 and falls into the film box 53. By tilting the first conveyor 41, the mixture on the first conveyor 41 can be thrown upward, effectively avoiding the problem that larvae press on the residual film, preventing the residual film from being adsorbed onto the surface of the perforated conveyor belt 52, and effectively improving the cleanliness of the mixture screening.

[0043] During operation, the mixture is fed into the drum screen 21 screening mechanism via the feed hopper 23. After preliminary screening, the insect sand and soil in the mixture fall through the holes of the drum screen 21 onto the vibrating screen 31 screening system. The vibrating screen 31 screening mechanism effectively separates the insect sand and soil through the vibration of the insect sand vibrating screen 31. Larger residual films and insect larvae in the mixture fall from the rear end of the drum screen 21 onto the first conveyor 41. The first conveyor 41 throws the mixture to the second conveyor 42. During the throwing process, due to the different suspension speed of the larvae in the air, the residual film adsorption mechanism 5 screens the residual film and larvae. The residual film is adsorbed and collected by the residual film adsorption mechanism 5, and the larvae fall onto the second conveyor 42 and are subsequently collected.

[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A screening device for recovering a mixture of insect larvae-derived residual membranes, characterized in that, include: frame; A drum screening mechanism, which is rotatably connected to the frame; A vibrating screening mechanism, which is connected to the frame below the drum screening mechanism; A conveying mechanism is provided to receive and convey the oversize material output by the drum screening mechanism, and a tail hopper is provided at the end of the conveying mechanism away from the vibrating screening mechanism. A residual film adsorption mechanism is disposed above the conveying mechanism and is used to adsorb and collect the residual film in the sieve material. The conveying mechanism includes a first conveyor and a second conveyor. The first conveyor is used to receive the mixture after screening by the drum screening mechanism. The first conveyor is inclined, with the end of the first conveyor near the drum screening mechanism lower than the end near the residual film adsorption mechanism. The first conveyor is driven by the vibration power component of the vibration screening mechanism. The mixture of larvae and residual film is thrown up by the first conveyor, adsorbing the residual film in the mixture onto the outer surface of the perforated conveyor belt. The second conveyor is horizontally positioned below the top of the first conveyor and is used to receive the larvae thrown up by the first conveyor. The residual film adsorption mechanism includes a residual film screening power assembly, a perforated conveyor belt, a film bundle box, a support frame, and a film suction mechanism. The perforated conveyor belt is positioned above the first conveyor and the second conveyor, and is mounted on the support frame. The residual film screening power assembly is fixedly connected to the support frame and is drivenly connected to the perforated conveyor belt. The film bundle box is positioned on both sides of the first conveyor and the second conveyor and is used to receive the residual film adsorbed by the perforated conveyor belt. One end of the film suction mechanism extends into the perforated conveyor belt, and the film suction mechanism is used to adsorb the residual film onto the perforated conveyor belt. It also includes a scraper plate, which is disposed at the inlet of the film box. The scraper plate slides on the working surface of the perforated conveyor belt and is used to scrape the residual film on the perforated conveyor belt into the film box. The film suction mechanism includes an air inlet, a negative pressure fan, and a guide pipe. The air inlet extends into the perforated conveyor belt, one end of the guide pipe is connected to the air inlet, and the other end of the guide pipe is connected to the negative pressure fan. The drum screening mechanism screens the sand and insect sand in the mixture; the vibrating screening mechanism further separates the sand and insect sand in the mixture; and the residual film adsorption mechanism separates the residual film and larvae. The vibrating screening mechanism includes a vibrating screen, a crankshaft, a connecting rod, and a vibrating power assembly. The crankshaft is rotatably connected to the frame and is drive-connected to the vibrating power assembly. The vibrating screen is hinged to the frame. One end of the connecting rod is drive-connected to the crankshaft, and the other end of the connecting rod is hinged to the vibrating screen and transmits power. It also includes a sand collecting plate and connecting cranks. The sand collecting plate is positioned below and parallel to the vibrating screen. The middle part of the connecting crank is hinged to the frame, one end of the connecting crank is hinged to the side wall of the vibrating screen, and the other end of the connecting crank is hinged to the side wall of the sand collecting plate. Multiple connecting cranks are provided.

2. The screening device for recovering a mixture of insect larvae-derived residual membranes according to claim 1, characterized in that, The frame includes a rigid frame, a bottom support rod, and a baffle plate. The bottom support rod is vertically connected to the bottom of the rigid frame. The baffle plate is fixedly connected to the top of the rigid frame and is located on both sides of the drum screening mechanism. The vibrating screening mechanism is set inside the rigid frame.

3. The screening device for recovering a mixture of insect larvae-derived residual membranes according to claim 1, characterized in that, The drum screening mechanism includes a drum screen and a drum power assembly. The drum screen is rotatably connected to the frame, and the drum power assembly is fixedly connected to the frame and is driven by the drum screen.

4. The screening device for recovering a mixture of insect larvae-derived residual membranes according to claim 3, characterized in that, A gear ring is provided on the outer wall of one end of the drum screen, and a support roller ring is provided on the other end of the drum screen. The gear ring is connected to the drum power assembly for transmission, and the support roller ring is rotatably connected to the frame.

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