A white star flower beetle and fecal sand vibration screening device

Abstract

The application discloses a kind of white star flower gold beetle and fecal sand vibration screening device, including main support frame and sandworm separation sieve box being installed on main support frame by support spring, sandworm separation sieve box is equipped with vibration motor, it further includes pretreatment feed tank, conveying belt, material dispersion mechanism, screen and shake and beat self-cleaning mechanism, pretreatment feed tank is installed on main support frame, conveying belt is installed inside pretreatment feed tank, material dispersion mechanism is used to flatten and scatter material on conveying belt, screen is provided with three, sandworm separation sieve box includes four outlets, is used to discharge large block impurity, large-sized larva, worm sand and un-decomposed base material respectively, shake and beat self-cleaning mechanism is arranged inside sandworm separation sieve box, for beating and cleaning screen.The present application is used to solve the problem that the existing technology white star flower gold beetle and fecal sand mixed and accumulated material has certain humidity, possibly causes screen blockage, reduces screening efficiency.

Description

Technical Field

[0001] This invention relates to the field of vibration screening devices, specifically to a vibration screening device for white-spotted beetles and dung sand. Background Technology

[0002] The larvae of the white-spotted flower beetle possess strong jaws and an intestine capable of degrading lignocellulose. In nature, they feed on decaying plant stalks and livestock manure, degrading agricultural waste in a pollution-free manner while converting it into insect protein products with high protein content. The frass produced by the larvae of the white-spotted flower beetle is rich in humic acid, which can be used as organic fertilizer to promote plant growth and reduce soil toxicity. Currently, using the white-spotted flower beetle to convert and treat agricultural waste has become an important way to utilize agricultural waste resources.

[0003] Both the larvae and excrement of the white-spotted flower beetle have economic value. Currently, when using the white-spotted flower beetle to convert agricultural waste, the larvae are generally cultured in fermentation materials (such as straw and vegetable leaf fermentation). As the larvae grow, the larger adult beetles can be separated and sold commercially, while the smaller larvae can continue to be cultured. The beetle excrement, mixed in with the fermentation material, also needs to be separated. Uneaten fermentation material can be recycled. Traditionally, manual selection of the larvae or sieving of the beetles and agricultural waste using sieves is inefficient. Currently, large-scale cultivation of the white-spotted flower beetle is less common. Vibrating screens are commonly used to separate white-spotted flower beetle larvae and dung sand. A vibrating motor drives the screen to vibrate, and the larvae and dung sand are separated based on their particle size differences. However, during the screening process, the non-uniform particle size of agricultural waste and livestock manure can clog the screen. Even though the screen is vibrating, particles of the appropriate size and mesh size can still get stuck, blocking subsequent material passage and reducing screening efficiency. This is especially true when livestock manure and agricultural waste accumulate inside the hopper and have a certain level of moisture (materials with 8-15% moisture content are prone to clogging), making them more likely to clump together or adhere to the screen, causing blockages. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a vibrating screening device for white-spotted beetles and dung sand, which solves the problem mentioned in the background art that the mixed accumulation of white-spotted beetles and dung sand has a certain degree of moisture, which may cause clogging of the screen and reduce screening efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vibrating screening device for white-spotted beetles and their droppings, comprising a main support frame and a sand-insect separation sieve box mounted on the main support frame via support springs, wherein a vibrating motor is installed on the sand-insect separation sieve box, and further comprising:

[0006] A pretreatment feed box is installed on the main support frame, and the discharge port of the pretreatment feed box is connected to the feed port of the sandworm separation screen box.

[0007] A conveyor belt is installed inside the pretreatment feed box, and the discharge position of the conveyor belt is located above the discharge port of the pretreatment feed box;

[0008] A material dispersing mechanism, used to flatten and disperse the material on the conveyor belt, the material dispersing mechanism comprising:

[0009] A dispersion drive plate, which is slidably mounted inside the pretreatment feed box and is capable of reciprocating movement;

[0010] A material actuating lever, wherein multiple material actuating levers are provided, the material actuating levers are fixedly disposed below the dispersion drive plate, and the material actuating levers are in contact with the top end of the conveyor belt for actuating the material on the conveyor belt;

[0011] The screen has three screens, which are located inside the sandworm separation screen box. The mesh size of the three screens decreases from top to bottom. The sandworm separation screen box includes four outlets, which correspond to the discharge positions of the three screens and the inner bottom wall of the sandworm separation screen box, respectively, and are used to discharge large impurities, older larvae, insect sand, and undecomposed substrate.

[0012] A self-cleaning vibration mechanism, located inside the sand and worm separation sieve box, is used to beat and clean the sieve screen. The self-cleaning vibration mechanism includes:

[0013] Multiple soft baffles are provided. The soft baffles are rotatably disposed inside the sandworm separation screen box and located below the screen. The lower side of the soft baffle is a movable end and faces the outlet side.

[0014] A swing push rod is connected to the bottom end of a plurality of soft baffles, and the swing push rod is movably disposed inside the sandworm separation sieve box.

[0015] To slow down the forward speed of the material on the screen and ensure complete screening, a back-blowing deceleration mechanism is also included. This mechanism is located at the outlet of the sandworm separation screen box and is used to blow air into the feed inlet of the sandworm separation screen box to slow down the material's forward movement. The back-blowing deceleration mechanism includes:

[0016] A backflush pipe is provided at the outlet of the sandworm separation screen box, and the backflush pipe has an outlet for blowing gas toward the feed inlet of the sandworm separation screen box.

[0017] To enable the movement of the dispersion drive plate and the swing push rod, a driving component is also included. This driving component is connected to the back-blowing retarder mechanism and is used to drive the dispersion drive plate and the swing push rod to reciprocate. The driving component includes:

[0018] A telescopic airbag is provided, wherein multiple telescopic airbags are provided, one end of the telescopic airbag is fixedly connected to the dispersion drive plate, and the end of the telescopic airbag is fixedly connected to the swing push rod away from the outlet;

[0019] An air intake pipe, through which the telescopic airbag is connected to the backflush pipe;

[0020] A return spring is installed inside the telescopic airbag and is used to compress the telescopic airbag after the telescopic airbag stops supplying air, so as to drive the dispersion drive plate and the swing push rod to return to their original positions.

[0021] An exhaust pipe is connected to the intake pipe and the backflush pipe via a three-way valve.

[0022] Preferably, two vibration motors are provided, and the motor shafts of the vibration motors are inclined relative to the screen.

[0023] To allow moisture to escape and reduce dust, a cover is installed on the top of the sandworm separation screen box. The cover is connected to an exhaust pipe, and a dustproof net is installed inside the exhaust pipe to block dust.

[0024] Compared with the prior art, the present invention provides a vibrating screening device for white-spotted beetles and dung sand, which has the following beneficial effects:

[0025] 1. In this invention, the inclined setting of the vibrating motor drives the sand-insect separation screen box and screen to vibrate, throwing the material on the screen upward and forward. The material is screened into four types through the setting of three layers of screen: large pieces of plastic film and straw and other impurities from top to bottom, 2-3 instar larvae, insect sand and undecomposed feces and other substrate mixed with a small amount of young larvae. These are discharged through four outlets respectively, realizing the separation of larvae, insect sand and substrate. The older larvae and insect sand can be sold as commodities, while the substrate and young larvae are re-cultivated and decomposed.

[0026] 2. In this invention, before the material enters the screening, it first passes through the pre-treatment feeding box. The internal dispersion drive plate drives the material agitator to swing back and forth, flattening and dispersing the base material on the conveyor belt. This greatly reduces the agglomeration of the material. At the same time, the back-blowing pipe blows air onto the material on the screen, which not only removes moisture but also makes the material less likely to stick to the screen. The problem of screen clogging is naturally reduced, thereby accelerating the separation efficiency of larvae, insect sand and base material and reducing manual cleaning work.

[0027] 3. In this invention, the material moves upward and forward under the vibration of the vibrating motor. The inclined soft baffles set between the screens can not only make the screened material fall smoothly, but also block the material that bounces up below, preventing it from mixing back into the screen above. This allows the separated materials to go their own way. The soft baffles can also actively clean the screen. Driven by the swing push rod, the soft baffles can rotate back and forth. Whenever it hits upward, it will stick to the bottom of the screen and push out the material stuck in the screen hole, which can effectively reduce blockage and make the material pass through more smoothly.

[0028] 4. In addition, the backflush pipe blows air into the interior of the sand and worm separation screen box, which can slow down the material's forward speed to a certain extent, ensuring that each screen has enough time to complete the screening. At the same time, this airflow continuously carries away moisture and discharges it through the exhaust pipe, keeping the entire screening environment dry, which has multiple benefits. Attached Figure Description

[0029] Figure 1 This is a first-person view structural diagram of the entire application;

[0030] Figure 2 This is a second-view structural diagram of the entire application;

[0031] Figure 3 This is a partial cross-sectional structural diagram of this application;

[0032] Figure 4 This is a structural schematic diagram of the main support frame, sandworm separation screen box, screen, and outlet of this application;

[0033] Figure 5 This is a schematic diagram of the structure of the screen, telescopic airbag, and vibratory self-cleaning mechanism in this application.

[0034] Figure 6 This is a schematic diagram of the swing push rod, material dispersion mechanism, back-blowing retardation mechanism and drive component of this application;

[0035] Figure 7 This is a schematic diagram of the structure of the driver component in this application;

[0036] Figure 8 For this application Figure 3 A magnified schematic diagram of the partial structure at point A in the middle;

[0037] Figure 9 This is a schematic diagram of the pretreatment feed box, conveyor belt, dispersion drive plate and material actuation rod of this application.

[0038] In the picture:

[0039] 1. Main support frame; 2. Support springs; 3. Sandworm separation screen box; 4. Vibrating motor; 5. Pretreatment feed box; 6. Conveyor belt; 7. Feed hopper; 8. Screen; 9. Outlet; 10. Baffle cover; 11. Exhaust pipe;

[0040] 101. Dispersion drive plate; 102. Material actuation lever;

[0041] 201. Soft baffle; 202. Swinging push rod;

[0042] 301. Backflush pipe;

[0043] 401. Telescopic airbag; 402. Inlet pipe; 403. Return spring; 404. Outlet pipe. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see Figures 1 to 9 A vibrating screening device for white-spotted beetles and their droppings includes a main support frame 1 and a sand-insect separation screen box 3 mounted on the main support frame 1 via support springs 2. The sand-insect separation screen box 3 can be vibrated by a vibrating motor 4 driven by the support springs 2. Two vibrating motors 4 are installed on the sand-insect separation screen box 3. The motor shafts of the two vibrating motors 4 are inclined relative to the screen 8. The excitation forces generated by the eccentric blocks of the two vibrating motors 4 cancel each other out in the direction parallel to the axis of the vibrating motors 4, and are superimposed into a resultant force in the direction perpendicular to the axis of the vibrating motors 4. Under the combined action of the excitation force and the weight of the material, the material is thrown up and jumps forward on the screen surface, thereby achieving the purpose of screening and grading the material. The device also includes a pretreatment feed box 5, a conveyor belt 6, a material dispersion mechanism, a screen 8, and a vibrating self-cleaning mechanism.

[0046] Please see Figures 1 to 3The pretreatment feed box 5 is installed on the main support frame 1. The discharge port of the pretreatment feed box 5 is connected to the inlet of the sandworm separation screen box 3. The conveyor belt 6 is installed inside the pretreatment feed box 5. The discharge position of the conveyor belt 6 is located above the discharge port of the pretreatment feed box 5. The inlet of the pretreatment feed box 5 is connected to the feed hopper 7. The material mixed with the base material and larvae can be sent into the feed hopper 7 by a loader or conveying device. The mixed material is transported to the discharge port of the pretreatment feed box 5 by the conveyor belt 6 and falls into the sandworm separation screen box 3 for screening. The conveying of the conveyor belt 6 makes the material change from a piled state to a loose state. During the conveying process, the internal moisture is dispersed, reducing the adhesion of the material.

[0047] Please see Figure 3 , Figure 6 and Figure 9 The material dispersion mechanism is used to flatten and disperse the material on the conveyor belt 6. The material dispersion mechanism includes a dispersion drive plate 101 and a material actuating rod 102. The dispersion drive plate 101 is slidably installed inside the pretreatment feed box 5 and can reciprocate. Multiple material actuating rods 102 are provided. The material actuating rods 102 are fixedly installed below the dispersion drive plate 101 and contact the top of the conveyor belt 6 to actuate the material on the conveyor belt 6. The dispersion drive plate 101 is slidably installed inside the pretreatment feed box 5 by a slider. The slider is fixedly installed on the dispersion drive plate 101. The inner wall of the pretreatment feed box 5 is provided with a groove that matches the slider. The dispersion drive plate 101 drives the material actuating rod 102 to reciprocate. The reciprocating swing of the material actuating rod 102 flattens and further loosens the material on the conveyor belt 6, making it easier for the material to be evenly transported into the sand and worm separation screen box 3 and improving the efficiency of water dispersion. It further reduces the accumulation and adhesion between materials, thereby facilitating the subsequent screening of the material.

[0048] Please see Figures 1 to 5There are three screens 8, which are installed inside the sand and worm separation screen box 3. The mesh size of the three screens 8 decreases from top to bottom. The sand and worm separation screen box 3 includes four outlets 9, which correspond to the discharge positions of the three screens 8 and the inner bottom wall of the sand and worm separation screen box 3, respectively, for discharging large impurities, older larvae, worm sand, and undecomposed substrate. The three screens 8 have a mesh size of 3 cm, 20 mesh, and 40 mesh from top to bottom. The 3 cm mesh screen 8 filters out large plastic film, straw, and soil clods, while the 20 mesh screen 8 filters out smaller larvae, worm sand, and undecomposed substrate. The older larvae (3rd instar) are screened out, and the insect sand is screened out through a 40-mesh sieve 8. What falls to the bottom of the sand-worm separation sieve box 3 is the substrate such as feces that have not been eaten or decomposed by the larvae, as well as a very small number of younger larvae. The inlet positions of the four outlets 9 correspond one-to-one with the three sieves 8 and the tail of the sand-worm separation sieve box 3, which is the discharge position. The four types of materials screened out are discharged and collected through the corresponding outlets 9. The older larvae and insect sand can be sold as goods, while the undecomposed feces and younger larvae are sent back to the cultivation or decomposition position for re-cultivation and resource utilization.

[0049] Please see Figures 1 to 6 The vibrating self-cleaning mechanism is installed inside the sand worm separation screen box 3 to beat and clean the screen 8. The vibrating self-cleaning mechanism includes soft baffles 201 and swing push rods 202. Multiple soft baffles 201 are provided. The soft baffles 201 are rotatably installed inside the sand worm separation screen box 3 and located below the screen 8. The lower side of the soft baffles 201 is the movable end and faces the outlet 9 of the sand worm separation screen box 3. The swing push rods 202 are connected to the bottom ends of the multiple soft baffles 201. The swing push rods 202 are movably installed inside the sand worm separation screen box 3. The soft baffles 201 are inclined towards the outlet 9 of the sand worm separation screen box 3. The material screened off the screen 8 can slide down along the soft baffles 201 and be located below. If the material vibrated by the screen 8 is thrown too high, it will be blocked by the inclined soft baffle 201, preventing the material from being vibrated too high and re-entering the upper screen 8 through the larger screen holes. Material vibrated to a suitable height will be pushed forward. The top of the soft baffle 201 is rotatably connected to the sand and worm separation screen box 3. By swinging the push rod 202 towards the outlet 9 of the sand and worm separation screen box 3, the soft baffle 201 can be driven to rotate upward and stick to the bottom of the screen 8. As the soft baffle 201 periodically taps and strikes the bottom of the screen 8, the material blocked in the screen holes can be pushed out, reducing the blockage of the screen 8. At the same time, the tapping of the soft baffle 201 on the screen 8 can increase the vibration of the screen 8, making it easier to disperse and fall the material.

[0050] Please see Figures 1 to 6To slow down the forward speed of the material on the screen 8 and ensure complete screening, a back-blowing deceleration mechanism is also included. This mechanism is located at the outlet 9 of the sandworm separation screen box 3 and is used to blow air into the feed inlet of the sandworm separation screen box 3 to slow down the material's forward movement. The back-blowing deceleration mechanism includes a back-blowing pipe 301, which is located at the outlet 9 of the sandworm separation screen box 3. The back-blowing pipe 301 has an outlet for blowing gas towards the feed inlet of the sandworm separation screen box 3. The back-blowing pipe 301 is connected to an external air source, which supplies air to the back-blowing pipe 301, thus forming a back-to-forward airflow within the sandworm separation screen box 3. This slows down the material's forward speed, thereby increasing the number of vibration screening cycles and ensuring complete screening. Simultaneously, the air blown by the back-blowing pipe 301 can remove moisture from the material, reducing its humidity and thus reducing the friction between the material and the screen 8. The adhesion between the materials ensures the screening effect and reduces the clogging of the screen 8. The airflow blown by the backflush pipe 301 enters the interior of the pretreatment feed box 5 to remove moisture from the material conveyed in the pretreatment feed box 5. In order to remove moisture and reduce dust, a cover 10 is installed on the top of the sandworm separation screen box 3. The cover 10 is connected to the exhaust pipe 11. A dustproof net is installed inside the exhaust pipe 11 to block dust. The cover 10 covers the top of the sandworm separation screen box 3, reducing the dust generated by the air blown by the backflush pipe 301 and the vibration of the screen 8. The exhaust pipe 11 can carry the moisture out of the airflow blown by the backflush pipe 301, providing a channel for the moisture to be discharged. At the same time, it avoids the excessive air pressure caused by the continuous air intake in the sandworm separation screen box 3. The dustproof net allows the airflow to pass through and blocks the dust, reducing the discharge of dust and thus protecting the external environment.

[0051] Please see Figures 1 to 8To enable the movement of the dispersion drive plate 101 and the swing push rod 202, a driving component is also included. This driving component is connected to the back-blowing retarder mechanism and is used to drive the dispersion drive plate 101 and the swing push rod 202 to reciprocate. The driving component includes a telescopic airbag 401, an air inlet pipe 402, a return spring 403, and an air outlet pipe 404. Multiple telescopic airbags 401 are provided. One end of each telescopic airbag 401 is fixedly connected to the dispersion drive plate 101, and the other end of each telescopic airbag 401 is fixedly connected to the end of the swing push rod 202 furthest from the outlet 9. The telescopic airbag 401 is connected to the inlet pipe 402 and the backflush pipe 301. A return spring 403 is installed inside the telescopic airbag 401 to compress it after the airbag stops supplying air, thereby causing the dispersion drive plate 101 and the swing push rod 202 to return to their original positions. The outlet pipe 404 is connected to the inlet pipe 402 and the backflush pipe 301 via a three-way valve. The three-way valve can control the connection between the inlet pipe 402 and the backflush pipe 301 or the outlet pipe 404. When the three-way valve is connected to the backflush pipe 301... An external air source supplies air into the telescopic airbag 401. The telescopic airbag 401 is in a contracted state under the action of the return spring 403. When the telescopic airbag 401 expands with air intake, it moves the dispersion drive plate 101 and the swing push rod 202. After the telescopic airbag 401 expands to its maximum state, the three-way valve is controlled to connect the air inlet pipe 402 and the air outlet pipe 404, causing the telescopic airbag 401 to lose air intake. Under the elastic force of the return spring 403, the telescopic airbag 401 is compressed, causing the dispersion drive plate 101 and the swing push rod 202 to return. When it returns to its original position, the gas inside is discharged through the air outlet 404. When the telescopic airbag 401 connected to the swing push rod 202 expands, the swing push rod 202 moves to make the soft baffle 201 rotate around the position where its top is rotatably connected to the sandworm separation screen box 3. The movement trajectory of the swing push rod 202 is obliquely upward. The elastic bending of the telescopic airbag 401 and the return spring 403 can adapt to this swing of the swing push rod 202, thereby realizing the reciprocating movement of the dispersion drive plate 101 and the reciprocating swing of the soft baffle 201.

[0052] The working principle or usage process of the vibrating screening device for white star flower beetle larvae and manure sand is as follows: the mixture of white star flower beetle larvae, poultry and livestock manure and agricultural waste is fed into the inside of the feeding hopper 7 through the feeding hopper 7. The material falls onto the conveyor belt 6, which transports the mixture to the inside of the sand beetle separation screen box 3, where the mixture falls onto the screen 8.

[0053] Turn on the vibration motor 4. The vibration motor 4 drives the sand and insect separation screen box 3 and screen 8 to vibrate, causing the material to be thrown up and moved forward. The screen 8 screens the mixture into large impurities, older larvae, insect sand and undecomposed base material and discharges them through four outlets 9 respectively. The screened material slides down through the soft baffle 201. At the same time, the soft baffle 201 prevents the material below from being shaken up excessively.

[0054] During the screening process, an external air source blows air into the backflush pipe 301, which in turn blows air into the feed inlet of the sandworm separation screen box 3, slowing down the material's forward speed, increasing the material's vibration frequency, and improving the screening effect. At the same time, the air blown by the backflush pipe 301 carries away the moisture in the material through the exhaust pipe 11, reducing the material's adhesion.

[0055] The telescopic airbag 401 is connected to the backflush pipe 301 or the air outlet pipe 404 through a three-way valve. The backflush pipe 301 sends air into the telescopic airbag 401 to make it expand. The telescopic airbag 401 is connected to the air outlet pipe 404 to allow the gas inside to be discharged. Under the action of the return spring 403, the telescopic airbag 401 contracts, thereby driving the dispersion drive plate 101 and the swing push rod 202 to reciprocate. The dispersion drive plate 101 drives the material agitator 102 to spread and disperse the material on the conveyor belt 6, reducing the adhesion of the material and expelling the moisture inside. The swing push rod 202 drives the soft baffle 201 to rotate. The soft baffle 201 swings back and forth to beat the bottom of the screen 8, improving the screening effect of the screen 8. At the same time, the soft baffle 201 pushes out the material in the screen holes, reducing the clogging of the screen 8.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibrating screening device for white-spotted beetles and their droppings, comprising a main support frame (1) and a sand-insect separation sieve box (3) mounted on the main support frame (1) via a support spring (2), wherein a vibrating motor (4) is installed on the sand-insect separation sieve box (3), characterized in that, Also includes: A pretreatment feed box (5) is installed on the main support frame (1), and the outlet of the pretreatment feed box (5) is connected to the inlet of the sandworm separation screen box (3). Conveyor belt (6), the conveyor belt (6) is installed inside the pretreatment feed box (5), and the discharge position of the conveyor belt (6) is located above the discharge port of the pretreatment feed box (5); Material dispersing mechanism, which is used to spread and disperse the material on the conveyor belt (6), the material dispersing mechanism includes a dispersing drive plate (101), which is slidably installed inside the pretreatment feed box (5) and can reciprocate; Three screens (8) are provided and are located inside the sandworm separation screen box (3). The mesh size of the three screens (8) decreases from top to bottom. The sandworm separation screen box (3) includes four outlets (9). The four outlets (9) correspond to the discharge positions of the three screens (8) and the inner bottom wall of the sandworm separation screen box (3), respectively, and are used to discharge large impurities, older larvae, insect sand and undecomposed substrate. A self-cleaning vibration mechanism is installed inside the sandworm separation sieve box (3) and is used to beat and clean the sieve (8). The vibrating self-cleaning mechanism includes: a soft baffle (201), multiple soft baffles (201) are provided, the soft baffles (201) are rotatably disposed inside the sand worm separation sieve box (3) and located below the sieve (8), the lower side of the soft baffles (201) is a movable end and faces the outlet (9); a swing push rod (202), the swing push rod (202) is connected to the bottom end of multiple soft baffles (201), the swing push rod (202) is movably disposed inside the sand worm separation sieve box (3); It also includes a back-blowing slowing mechanism, which is located at the outlet (9) of the sandworm separation screen box (3) and is used to blow air into the feed inlet of the sandworm separation screen box (3) to slow down the material movement. The backflush slowing mechanism includes a backflush pipe (301), which is located at the outlet (9) of the sandworm separation screen box (3). The backflush pipe (301) has an outlet for blowing gas toward the feed inlet of the sandworm separation screen box (3). It also includes a driving component, which is connected to the back-blowing retarder mechanism and is used to drive the dispersion driving plate (101) and the swing push rod (202) to reciprocate; The driving component includes: a telescopic airbag (401), of which multiple telescopic airbags (401) are provided, one end of which is fixedly connected to the dispersion driving plate (101), and the other end of which is fixedly connected to the swing push rod (202) away from the outlet (9); an air inlet pipe (402), through which the telescopic airbag (401) is connected to the backflush pipe (301); a return spring (403), which is installed inside the telescopic airbag (401) and is used to compress the telescopic airbag (401) after the telescopic airbag (401) stops supplying air, so as to drive the dispersion driving plate (101) and the swing push rod (202) to return to their original positions; and an air outlet pipe (404), which is connected to the air inlet pipe (402) and the backflush pipe (301) through a three-way valve.

2. The vibrating screening device for white-spotted flower beetles and dung sand according to claim 1, characterized in that, The material dispersing mechanism further includes: Material actuation lever (102), multiple material actuation levers (102) are provided, the material actuation levers (102) are fixedly arranged below the dispersion drive plate (101), the material actuation levers (102) are in contact with the top end of the conveyor belt (6), and are used to actuate the material on the conveyor belt (6).

3. The vibrating screening device for white-spotted flower beetles and dung sand according to claim 1, characterized in that, Two vibration motors (4) are provided, and the motor shaft of the vibration motor (4) is tilted relative to the screen (8).

4. The vibrating screening device for white-spotted beetles and dung sand according to claim 1, characterized in that, The top of the sandworm separation sieve box (3) is equipped with a cover (10), the cover (10) is connected to an exhaust pipe (11), and the exhaust pipe (11) is equipped with a dustproof net for blocking dust.

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