A pre-treatment device for preparing djenkol beans and a method of using the same

Abstract

The present application relates to the technical field of food cleaning, in particular to a kind of pre-treatment device for preparing luobuma and its using method.The water tank is provided with water inlet and water outlet on both sides, discharge port is arranged at the bottom center of the water tank, sealing plug is arranged at the bottom of the discharge port, rotating motor is arranged on the outer wall of the water tank, first screw rod is arranged on the output end of the rotating motor, moving frame is arranged on the surface of the first screw rod, stirring assembly is arranged on the bottom of the moving frame, and gathering assembly is arranged above the stirring assembly.The hollow box moves horizontally, the fixed gear is engaged with the rack at the bottom, the second screw rod is driven to rotate when the fixed gear rotates, the scraper is horizontally moved in the hollow box, and the bad beans adsorbed on the surface of the air-permeable plate are scraped during the movement of the scraper, so that the bad beans are away from the surface of the air-permeable plate, thereby ensuring the drainage effect of the fan stem on the water flow on the surface of the water tank.

Description

Technical Field

[0001] The present invention relates to the technical field of food cleaning, in particular to a pretreatment device for preparing light fermented black beans and a use method thereof. Background Art

[0002] Douchi is widely popular in the north and south of China because of its unique taste, good seasoning ability, and rich protein and multiple vitamins. In the preparation process of Douchi, the pretreatment and cleaning steps are crucial.

[0003] There are many existing technologies for bean cleaning devices, such as:

[0004] Chinese patent publication number CN211330479U discloses a fermented black bean washing device, belonging to the field of food cleaning technology. The device comprises a support unit, a washing drum, and a control unit. The support unit supports the washing drum on the ground, while the control unit is mounted at the bottom of the washing drum to control the fermented black bean washing process. The support unit comprises a column and a retaining ring. The retaining ring engages the bottom of the washing drum, and columns are arranged around the retaining ring. Together, the columns and retaining ring form a support for the washing drum. The washing drum comprises a drum body and a tail pipe. The tail pipe is located at the bottom of the drum body and is connected to the interior of the drum body. The control unit comprises a three-way valve, a drain pipe, a water inlet pipe, a water supply pipe, a connector, and a small hole. The bottom valve port of the three-way valve is connected to the drain pipe, the top valve port of the three-way valve is connected to the water supply pipe, and the third valve port of the three-way valve is connected to the water inlet pipe. The water supply pipe extends upward to the tail pipe of the washing drum, and the connector is mounted on the top of the tail pipe from the inside of the washing drum.

[0005] The existing washing device washes beans through a washing barrel, and uses high-pressure water to make the fermented black beans roll and rub in the barrel, which wastes water resources. In addition, during the washing process, bad beans floating on the water surface cannot be discovered and removed in time, which affects the taste of the fermented black beans produced later.

[0006] Therefore, a pretreatment device for preparing light fermented black beans and a method for using the same are proposed. Summary of the Invention

[0007] The object of the present invention is to provide a pretreatment device for preparing light fermented black beans and a method of using the same, so as to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, one of the purposes of the present invention is to provide a pretreatment device for preparing light fermented black beans, including a water tank, a water inlet and a water outlet are respectively provided on both sides of the water tank, a discharge port is provided at the center of the bottom of the water tank, a sealing plug is provided at the bottom of the discharge port, racks are provided on both sides of the inner wall of the water tank, through grooves are provided on both sides of the water tank, a rotating motor is provided on one side of the outer wall of the water tank, a first screw rod is provided at the output end of the rotating motor, a movable frame is provided on the surface of the first screw rod, the movable frame passes through the through groove and moves inside the water tank, a stirring component is provided at the bottom of the movable frame, the stirring component is used to stir and clean the soybeans in the water tank, a gathering component is provided above the stirring component, the gathering component is used to drain the insect-infested and floating beans to gather the insect beans, and collecting components are provided on both sides of the gathering component, the collecting components are used to collect the insect beans.

[0009] As a further improvement of the present technical solution, the stirring assembly includes ear blocks arranged on both sides of the movable frame, and a rubber roller rod is provided on the surface of the ear block. The side wall of the rubber roller rod is tightly fitted with the inner wall of the water tank. When the movable frame moves and drives the ear block to move, the rubber roller rod rotates on the inner wall surface of the water tank due to friction.

[0010] As a further improvement of this technical solution, a main gear is provided at the bottom of the rubber roller rod, a slave gear is provided below the main gear, and a stirring rod is provided between the slave gears. The stirring rod rotates at the bottom of the movable frame. When the stirring rod rotates, the soybeans inside the water tank are stirred, causing the surfaces of the soybeans to roll and rub against each other, thereby removing dust from the surface of the soybeans.

[0011] As a further improvement of the present technical solution, the gathering component includes a colored hollow box above the stirring rod, the hollow box is hollow with an opening on the side, and a through hole is provided on the side of the hollow box away from the opening. The through holes are arranged in a row, and a breathable plate is provided at the through hole. When the hollow box moves, the bad beans floating on the water surface are drained and gathered.

[0012] As a further improvement of this technical solution, a servo motor is provided on the side away from the opening of the hollow box, a fan blade rod is provided at the output end of the servo motor, a fan blade rod is provided at the center of the air-permeable plate, a transmission shaft is provided on the surface of the fan blade rod, and a transmission belt is provided between the transmission shafts.

[0013] As a further improvement of this technical solution, a second screw rod is provided inside the hollow box, which passes through the hollow box and has fixed gears on both sides. The fixed gear moves under the rack, and a scraper is provided on the surface of the second screw rod. When the fixed gear drives the second screw rod to rotate, it drives the scraper to move, and the scraper scrapes the surface of the air permeable plate to keep the soybeans adsorbed on the surface of the air permeable plate away from the air permeable plate.

[0014] As a further improvement of the technical solution, the collecting assembly comprises support plates arranged on both sides of the back of the hollow box, the surface of the support plate is provided with a collecting box, the back of the collecting box is provided with a through-hole plate, the opening of the collecting box is communicated with the side wall of the hollow box, the end of the support plate is provided with a rotating shaft, the surface of the rotating shaft is rotatably provided with a baffle, the surface of the rotating shaft is provided with a torsional spring, and the two sides of the torsional spring are respectively connected with the support plate and the baffle; in the natural state, the baffle is vertically fixed to the collecting box under the action of the torsional spring.

[0015] As a further improvement of the technical solution, the water tank is provided with a slope plate, and the soybeans are caused to slide from the surface of the slope plate to the discharge port under the action of gravity.

[0016] The second object of the present application is to provide a pretreatment method for preparing fresh soybeans, comprising the pretreatment device for preparing fresh soybeans according to any one of the preceding embodiments, and comprising the following steps:

[0017] S1, pour the soybeans to be cleaned into the water tank, water is injected into the water tank through the water injection port, the first screw rod is driven to rotate by the output end of the rotating motor, and the moving frame on the surface of the first screw rod is moved; the moving frame moves, and the stirring assembly stirs and cleans the soybeans in the water tank;

[0018] S2, when the stirring assembly stirs and cleans the soybeans in the water tank, the collecting assembly is arranged above the stirring assembly, the collecting assembly is used for draining and collecting the worm-eaten and floating worm beans, and the collecting assembly also stirs the collected bad beans, so that the bad beans are collected into the collecting assembly, thereby facilitating the removal and cleaning of the bad beans;

[0019] S3, when the soybeans are cleaned, the sealing plug is pulled out, the soybeans flow out of the discharge port, and the vibration motor continuously vibrates the surface of the slope plate, so that the soybeans are prevented from being accumulated and adhered to the surface of the slope plate, thereby improving the collection of the cleaned soybeans.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] 1. In the pretreatment device for preparing fresh soybeans, the first screw rod is driven to rotate by the output end of the rotating motor, the moving frame arranged on the surface of the first screw rod moves horizontally, the ear block moves during the movement of the moving frame, the rubber roller is attached to the inner wall of the water tank and rotates on the inner wall of the water tank under the action of friction, the rubber roller drives the main gear to rotate coaxially, the main gear drives the pinion to rotate at the same time, the stirring rod automatically stirs the soybeans in the water tank, the friction probability between the soybeans is improved, the removal efficiency of dust and impurities is improved, and the labor intensity of the workers is reduced.

[0022] 2. In the pretreatment device for preparing light fermented black beans, the output end of the servo motor drives the fan blade rod to rotate, and the transmission shaft provided on the surface of the fan blade rod is driven by the transmission belt, so that the fan blade rod blows the water body, so that the water flow inside the hollow box is discharged by suction, so that the horizontal surface water inside the water tank converges to the opening of the hollow box, and in the process of water flow gathering, the bad beans are driven to flow to the opening of the hollow box, so that the bad beans are quickly drained and gathered in the hollow box, which is convenient for subsequent collection and cleaning of the bad beans.

[0023] 3. In the pretreatment device for preparing light fermented black beans, when the hollow box moves horizontally, the fixed gear engages and rotates at the bottom of the rack. When the fixed gear rotates, it drives the second screw to rotate. The scraper provided on the surface of the second screw moves horizontally inside the hollow box. During the movement, the scraper scrapes the bad beans adsorbed on the surface of the air permeable plate, so that the bad beans are away from the surface of the air permeable plate, thereby ensuring the drainage effect of the fan blade rod on the water flow on the surface of the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the mobile rack of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the aggregation component of the present invention;

[0028] Figure 5 For the present invention Figure 4 Schematic diagram of point A;

[0029] Figure 6 This is a schematic structural diagram of the stirring assembly of the present invention;

[0030] Figure 7 For the present invention Figure 6 Schematic diagram of point B;

[0031] Figure 8 It is a cross-sectional view of the waste collection assembly of the present invention.

[0032] The meaning of each number in the figure is:

[0033] 100, water tank; 101, sealing plug; 102, vibration motor; 103, rack; 104, through slot; 105, ramp plate;

[0034] 200, rotating motor; 201, first screw rod; 202, moving frame;

[0035] 300, stirring assembly; 301, ear block; 302, rubber roller rod; 303, main gear; 304, slave gear; 305, stirring rod;

[0036] 400, gathering assembly; 401, hollow box; 402, second screw; 403, fixed gear; 404, scraper; 405, air permeable plate; 406, servo motor; 407, fan blade rod; 408, transmission belt;

[0037] 500, collecting assembly; 501, supporting plate; 502, rotating shaft; 503, baffle; 504, torsion spring; 505, collecting box; 506, through-hole plate. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] like Figure 1 As shown, one of the purposes of the present invention is to provide a pre-treatment device for preparing light fermented black beans, see Figures 1-8 As shown, it includes a water tank 100, with a water inlet and a water outlet respectively provided on both sides of the water tank 100, a discharge port provided at the center of the bottom of the water tank 100, a sealing plug 101 provided at the bottom of the discharge port, racks 103 provided on both sides of the inner wall of the water tank 100, through grooves 104 provided on both sides of the water tank 100, a rotating motor 200 provided on one side of the outer wall of the water tank 100, a first screw rod 201 provided at the output end of the rotating motor 200, a movable frame 202 provided on the surface of the first screw rod 201, the movable frame 202 moves on the surface of the first screw rod 201, a stirring assembly 300 provided at the bottom of the movable frame 202, the stirring assembly 300 is used to stir and clean the soybeans in the water tank 100, a gathering assembly 400 is provided above the stirring assembly 300, the gathering assembly 400 is used to drain the insect-infested and floating insect beans, so that the insect beans are gathered, and collecting assemblies 500 are provided on both sides of the gathering assembly 400, the collecting assembly 500 is used to collect the insect beans.

[0040] The improvement of this embodiment is that: the fan blade rod 407 is driven to rotate by the output end of the servo motor 406, and the transmission shaft provided on the surface of the fan blade rod 407 is transmitted through the transmission belt 408, so that the fan blade rod 407 blows the water body, so that the water flow inside the hollow box 401 is discharged by suction, so that the horizontal surface water inside the water tank 100 converges to the opening of the hollow box 401, and in the process of water flow gathering, the bad beans are driven to flow to the opening of the hollow box 401, thereby draining the bad beans and gathering them in the hollow box 401, which is convenient for subsequent collection and cleaning of the bad beans.

[0041] Since there are many dust and impurities on the surface of soybeans, it is necessary to ensure that the surface of soybeans is clean during the production of light fermented black beans, and it needs to be rinsed. During the soybean cleaning process, manual stirring is required, which increases the labor intensity of the operators. Therefore, the stirring assembly 300 includes ear blocks 301 arranged on both sides of the movable frame 202, and rubber roller rods 302 are provided on the surface of the ear blocks 301. The side walls of the rubber roller rods 302 are tightly fitted with the inner wall of the water tank 100. When the movable frame 202 moves to drive the ear blocks 301 to move, the rubber roller rods 302 are rotated on the inner wall surface of the water tank 100 by friction. A main gear 303 is provided at the bottom of the rubber roller rod 302, and a slave gear 304 is provided below the main gear 303. A stirring rod 305 is provided between the slave gears 304. The stirring rod 305 rotates at the bottom of the movable frame 202. When the stirring rod 305 rotates, the water The soybeans inside the cylinder 100 are stirred, causing the surfaces of the soybeans to roll and rub against each other, so that dust on the surface of the soybeans falls off. When washing the soybeans, the output end of the rotating motor 200 is controlled to drive the first screw rod 201 to rotate, and the movable frame 202 provided on the surface of the first screw rod 201 moves horizontally. During the movement process, the movable frame 202 drives the ear block 301 to move, and the rubber roller rod 302 is attached to the inner wall of the water cylinder 100. Under the action of friction, the rubber roller rod 302 rotates on the inner wall of the water cylinder 100, and the rubber roller rod 302 drives the main gear 303 to rotate coaxially. The main gear 303 drives the slave gear 304 to rotate while rotating, so that the stirring rod 305 automatically stirs the soybeans inside the water cylinder 100, thereby increasing the friction probability between the soybeans and accelerating the removal efficiency of dust and impurities, thereby reducing the labor intensity of the operators.

[0042] During the soybean cleaning process, there are bad beans, i.e., worm-eaten beans, among the soybeans. Since the inside is eroded by insects, they usually float on the water surface during the stirring process. In order to improve the production quality of light fermented black beans, the bad beans need to be removed. Therefore, the gathering component 400 includes a colored hollow box 401 above the stirring rod 305. The hollow box 401 is hollow with a side opening. A through hole is provided on the side of the hollow box 401 away from the opening. The through holes are arranged in a row. A breathable plate 405 is provided at the through hole. When the hollow box 401 moves, the bad beans floating on the water surface are drained to gather them. A servo motor 406 is provided on the side away from the opening of the hollow box 401. A fan rod 407 is provided at the output end of the servo motor 406. 5 are provided with fan blade rods 407 at the center, and transmission shafts are provided on the surfaces of the fan blade rods 407. Transmission belts 408 are provided between the transmission shafts. During the stirring process of soybeans, the fan blade rods 407 are driven to rotate by the output end of the servo motor 406, and the transmission shaft provided on the surface of the fan blade rods 407 is transmitted through the transmission belt 408, so that the fan blade rods 407 blow the water body, so that the water flow inside the hollow box 401 is discharged by suction, so that the water on the horizontal surface inside the water cylinder 100 converges to the opening of the hollow box 401, and in the process of water flow gathering, the bad beans are driven to flow to the opening of the hollow box 401, so that the bad beans are drained and gathered in the hollow box 401, which is convenient for subsequent collection and cleaning of the bad beans.

[0043] Taking into account that when soybeans gather on the surface of the hollow box 401, when the soybeans are adsorbed to the surface of the air-permeable plate 405, the fan blade rod 407 has a poor drainage effect on the water flow, resulting in low efficiency in collecting bad beans. Therefore, a second screw rod 402 is provided inside the hollow box 401. The second screw rod 402 passes through the hollow box 401 and is provided with fixed gears 403 on both sides. The fixed gear 403 moves under the rack 103. A scraper 404 is provided on the surface of the second screw rod 402. When the fixed gear 403 drives the second screw rod 402 to rotate, it drives the scraper 404 to move, and the scraper 404 scrapes the surface of the air-permeable plate 405. The scraper 404 scrapes the bad beans adsorbed on the surface of the air plate 405 away from the air plate 405. When the hollow box 401 moves horizontally, the fixed gear 403 engages and rotates at the bottom of the rack 103. When the fixed gear 403 rotates, it drives the second screw rod 402 to rotate. The scraper 404 provided on the surface of the second screw rod 402 moves horizontally inside the hollow box 401. During the movement, the scraper 404 scrapes the bad beans adsorbed on the surface of the air plate 405 to keep the bad beans away from the surface of the air plate 405, thereby ensuring the drainage effect of the fan rod 407 on the water flow on the surface of the water tank 100 and improving the collection efficiency of the bad beans.

[0044] In order to facilitate the collection and cleaning of floating bad beans, the collection assembly 500 includes support plates 501 provided on both sides of the back of the hollow box 401, a collection box 505 is provided on the surface of the support plate 501, a through-hole plate 506 is provided on the back of the collection box 505, the opening of the collection box 505 is connected to the side wall of the hollow box 401, a rotating shaft 502 is provided at the end of the support plate 501, a baffle 503 is provided on the surface of the rotating shaft 502 for rotation, a torsion spring 504 is provided on the surface of the rotating shaft 502, and the two sides of the torsion spring 504 are respectively connected to the support plate 50 1 and baffle 503. In a natural state, the baffle 503 is held in a vertical position with respect to the horizontal plane by the force of the torsion spring 504 to fix the collection box 505. When the scraper 404 scrapes the bad beans adsorbed on the surface of the air permeable plate 405, the bad beans are collected into the collection box 505. When the bad beans are collected, the baffle 503 is pulled to rotate on the surface of the rotating shaft 502, so that the baffle 503 stops limiting the collection box 505. The collection box 505 is tilted and taken out, thereby quickly collecting and cleaning the bad beans.

[0045] When the soybeans are cleaned, in order to quickly collect the cleaned soybeans, a slope plate 105 is provided at the bottom of the water tank 100. The soybeans slide from the surface of the slope plate 105 to the discharge port due to gravity. Vibration motors 102 are provided on both sides of the bottom of the discharge port. By pulling out the sealing plug 101, the soybeans flow out of the discharge port. At the same time, the vibration motor 102 continuously vibrates the surface of the slope plate 105 to prevent the soybeans from accumulating and adhering to the surface of the slope plate 105, thereby improving the collection of the cleaned soybeans.

[0046] During specific use, the soybeans to be cleaned are poured into the water tank 100, and water is injected into the water tank 100 through the water inlet. The output end of the rotating motor 200 is controlled to drive the first screw rod 201 to rotate, and the movable frame 202 provided on the surface of the first screw rod 201 moves horizontally. During the movement process, the movable frame 202 drives the ear block 301 to move, and the rubber roller rod 302 is attached to the inner wall of the water tank 100. Under the action of friction, the rubber roller rod 302 rotates on the inner wall of the water tank 100, and the rubber roller rod 302 drives the main gear 303 to rotate coaxially. The main gear 303 drives the slave gear 304 to rotate while rotating, so that the stirring rod 305 automatically stirs the soybeans inside the water tank 100, thereby increasing the friction probability between the soybeans and accelerating the removal efficiency of dust and impurities, thereby reducing the labor intensity of the operators.

[0047] During the stirring process of soybeans, the fan blade rod 407 is driven to rotate by the output end of the servo motor 406, and the transmission shaft provided on the surface of the fan blade rod 407 is transmitted through the transmission belt 408, so that the fan blade rod 407 blows the water body, so that the water flow inside the hollow box 401 is discharged by suction, so that the water on the horizontal surface inside the water cylinder 100 converges to the opening of the hollow box 401, and in the process of water flow gathering, the bad beans are driven to flow to the opening of the hollow box 401, thereby draining the bad beans and gathering them in the hollow box 401, which is convenient for subsequent Bad beans are collected and cleaned; when the hollow box 401 moves horizontally, the fixed gear 403 meshes and rotates at the bottom of the rack 103. When the fixed gear 403 rotates, it drives the second screw rod 402 to rotate. The scraper 404 provided on the surface of the second screw rod 402 moves horizontally inside the hollow box 401. During the movement, the scraper 404 scrapes the bad beans adsorbed on the surface of the air permeable plate 405, so that the bad beans are away from the surface of the air permeable plate 405, thereby ensuring the drainage effect of the fan rod 407 on the water flow on the surface of the water tank 100, and improving the collection efficiency of bad beans;

[0048] The baffle 503 is clamped and fixed to the collection box 505 in a vertical position with respect to the horizontal plane by the force of the torsion spring 504. When the scraper 404 scrapes the bad beans adsorbed on the surface of the air permeable plate 405, the bad beans are collected into the collection box 505. When the bad beans are collected, the baffle 503 is pulled to rotate on the surface of the rotating shaft 502, so that the baffle 503 stops limiting the collection box 505. The collection box 505 is tilted and taken out, so that the bad beans can be quickly collected and cleaned.

[0049] The second object of the present invention is to provide a pretreatment method for preparing light fermented black beans, comprising any one of the above-mentioned pretreatment devices for preparing light fermented black beans, comprising the following steps:

[0050] S1. Pour the soybeans to be cleaned into the water tank 100. Water is poured into the water tank 100 through the water inlet. The output end of the rotary motor 200 drives the first screw 201 to rotate. The first screw 201 drives the movable frame 202 on its surface to move. During the movement of the movable frame 202, the stirring assembly 300 stirs and cleans the soybeans in the water tank 100.

[0051] S2. When the stirring assembly 300 stirs and cleans the soybeans in the water tank 100, a gathering assembly 400 is provided above the stirring assembly 300. The gathering assembly 400 is used to drain and gather the insect-infested and floating soybeans. At the same time, the gathering assembly 400 moves the gathered bad soybeans so that they are collected into the collecting assembly 500, thereby facilitating their removal and cleaning.

[0052] S3, when the soybean cleaning is completed, the sealing plug 101 is pulled out, the soybean flows out from the discharge port, and the vibration motor 102 continuously vibrates the surface of the slope plate 105, so that the soybean is not accumulated and adhered to the surface of the slope plate 105, thereby improving the collection of the cleaned soybean.

[0053] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for preparing light fermented black beans, characterized in that: It includes a water tank, with a water inlet and a water outlet respectively provided on both sides of the water tank, a discharge port provided at the center of the bottom of the water tank, a sealing plug provided at the bottom of the discharge port, racks provided on both sides of the inner wall of the water tank, through grooves provided on both sides of the water tank, a rotating motor provided on one side of the outer wall of the water tank, a first screw rod provided at the output end of the rotating motor, a movable frame provided on the surface of the first screw rod, the movable frame passes through the through groove and moves inside the water tank, a stirring component provided at the bottom of the movable frame, the stirring component is used to stir and clean the soybeans in the water tank, a gathering component is provided above the stirring component, the gathering component is used to drain the insect-infested and floating beans, so that the insect beans are gathered, and collecting components are provided on both sides of the gathering component, the collecting components are used to collect the insect beans; The stirring assembly includes ear blocks arranged on both sides of the mobile frame. The surface of the ear blocks is provided with rubber roller rods. The side walls of the rubber roller rods are in close contact with the inner wall of the water tank. When the mobile frame moves and drives the ear blocks to move, the rubber roller rods are rotated on the inner wall surface of the water tank due to friction. A main gear is provided at the bottom of the rubber roller rod, a slave gear is provided below the main gear, and a stirring rod is provided between the slave gears. The stirring rod rotates at the bottom of the mobile frame. When the stirring rod rotates, it stirs the soybeans inside the water tank, causing rolling friction between the surfaces of the soybeans to remove dust from the surface of the soybeans. The gathering component includes a hollow box located above the stirring rod. The hollow box is hollow with an opening on the side. The hollow box is provided with through holes on the side away from the opening. The through holes are arranged in a row and a breathable plate is provided at the through holes. When the hollow box moves, it drains the bad beans floating on the water surface and gathers them. A servo motor is provided on the side away from the opening of the hollow box, a fan blade rod is provided at the output end of the servo motor, a fan blade rod is provided at the center of the air permeable plate, a transmission shaft is provided on the surface of the fan blade rod, and a transmission belt is provided between the transmission shafts; A second screw rod is provided inside the hollow box, which passes through the hollow box and has fixed gears on both sides. The fixed gear moves under the rack. A scraper is provided on the surface of the second screw rod. When the fixed gear drives the second screw rod to rotate, it drives the scraper to move. The scraper scrapes the surface of the air plate to keep the soybeans adsorbed on the surface of the air plate away from the air plate.

2. The pretreatment device for preparing light fermented black beans according to claim 1, characterized in that: The collecting assembly includes supporting plates provided on both sides of the back of the hollow box, a collecting box provided on the surface of the supporting plate, a through-hole plate provided on the back of the collecting box, an opening of the collecting box communicating with the side wall of the hollow box, a rotating shaft provided on the end of the supporting plate, a baffle provided for rotation on the surface of the rotating shaft, a torsion spring provided on the surface of the rotating shaft, a supporting plate and a baffle connected to both sides of the torsion spring respectively, and in a natural state, the baffle is clamped and fixed to the collecting box in a vertical state to the horizontal plane under the action of the torsion spring.

3. The pretreatment device for preparing light fermented black beans according to claim 2, characterized in that: A slope plate is provided at the bottom of the water tank, and the soybeans slide from the surface of the slope plate to the discharge port under the action of gravity. Vibration motors are provided on both sides of the bottom of the discharge port.

4. A pretreatment method for preparing light fermented black beans, comprising the pretreatment device for preparing light fermented black beans according to any one of claims 1 to 3, characterized in that: The following steps are included: S1. Pour the soybeans to be cleaned into a water tank, fill the water tank with water through the water inlet, and rotate the output end of the motor to drive the first screw to rotate. The first screw drives the movable frame on the surface of the first screw to move. During the movement of the movable frame, the stirring assembly stirs and cleans the soybeans in the water tank; S2. When the stirring assembly stirs and cleans the soybeans in the water tank, a gathering assembly is provided above the stirring assembly. The gathering assembly is used to drain and gather insect-infested and floating beans. At the same time, the gathering assembly moves the gathered bad beans so that they are collected into the collection assembly, thereby facilitating their removal and cleaning. S3. When the soybeans are cleaned, the sealing plug is pulled out to allow the soybeans to flow out from the discharge port. At the same time, the vibration motor continuously vibrates the surface of the slope plate to prevent the soybeans from accumulating and adhering to the surface of the slope plate, thereby collecting the cleaned soybeans.

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