Soybean cleaning device based on vacuum feeding double-tank cleaning

Abstract

The application discloses a soybean cleaning device based on vacuum feeding and double-tank cleaning, which comprises a vacuum feeding mechanism, a first iron removing assembly, a rough cleaning tank, a second iron removing assembly, a fine cleaning and collecting tank assembly, an auger elevator and a centrifugal dewatering screen assembly. The device can rely on double-tank grading cleaning to cooperate with two-stage iron removing process, and can gradually remove iron filings, impurities, soil dust and hollow and worm-eaten materials in the raw materials in the soybean conveying and cleaning process. The device solves the problems of incomplete impurity removal and easy equipment abrasion caused by hard iron filings in the traditional soybean cleaning device, and effectively improves the cleanliness and processing efficiency of soybean cleaning.

Description

Technical Field

[0001] This invention relates to the field of soybean cleaning equipment technology, and specifically to a soybean cleaning device based on vacuum conveying dual-tank cleaning. Background Technology

[0002] Soybeans, as an important food ingredient, are widely used in the processing of soy products. Before entering the deep processing stage, soybeans must undergo a cleaning process to remove mud, dust, and any ferromagnetic metal impurities (such as nails, screws, etc.) adhering to their surface. Traditional soybean cleaning methods often employ a box-type static cleaning method, where soybeans are placed in a cleaning tank for soaking and then manually stirred or allowed to settle. This method suffers from problems such as high labor intensity, low cleaning efficiency, and uneven cleaning.

[0003] In the prior art, Chinese invention patent CN106213541A discloses a continuous soybean washing system. This washing system includes a stepped support frame, a primary washing mechanism, and a secondary washing mechanism. The primary washing mechanism includes a primary washing tank, a stirring shaft, and a first stirring motor. The primary washing tank includes an upper cavity and a lower cavity, with a perforated plate between the upper and lower cavities. The stirring shaft is located in the upper cavity and has stirring blades and discharge blades. The free ends of the stirring blades are arc-shaped, and multiple stirring blades are arranged spirally on the stirring shaft. The secondary washing mechanism includes a secondary washing tank, a conveying auger, and a second stirring motor. This invention, through its stepped two-stage washing system, enables continuous operation and improves the automation and efficiency of the washing process to a certain extent. However, this technical solution still has the following shortcomings: First, the cleaning system relies on soybean raw materials entering the primary cleaning tank through the first inlet, without an automatic feeding device, still requiring manual assistance or external conveying equipment to feed the soybean raw materials into the inlet; Second, the cleaning system does not have any iron removal mechanism for ferromagnetic metal impurities such as iron nails and screws that may be mixed in with the soybean raw materials, which will directly affect the food safety of soybean products and may damage subsequent processing equipment; Third, the cleaning method is relatively simple. The cleaning system mainly relies on the stirring shaft to drive the soybeans to mix and rub with water for cleaning. Although it is designed with stirring blades, it does not adopt more efficient cleaning methods such as high-pressure spraying or drum cleaning. For impurities that are firmly attached to the surface of soybeans, the cleaning effect still needs to be further improved; In addition, the cleaning water of the cleaning system is directly discharged through the drain after the primary and secondary cleaning, failing to achieve the recycling of cleaning water, resulting in low water resource utilization and failing to meet the increasingly stringent water conservation and environmental protection requirements of the food processing industry. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a soybean cleaning device based on vacuum feeding and dual-tank cleaning. It aims to comprehensively solve the technical problems of insufficient automation, lack of iron removal function, and single cleaning method in existing technologies by systematically integrating vacuum negative pressure automatic feeding, permanent magnet iron removal, dual cleaning and water resource recycling.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The soybean washing device based on vacuum conveying dual-tank cleaning includes a coarse washing tank assembly, a fine washing water collection tank assembly and an auger elevator, as well as a vacuum unit, a vacuum conveying assembly, a permanent magnet iron separator and a cleaning pipeline assembly. The vacuum unit includes a motor, a vacuum pump, and a unit platform. The motor is mounted on the unit platform, and the unit platform is fixedly connected to the vacuum pump via a connector. The inlet of the vacuum pump is connected to a feed pipe. The vacuum conveying assembly includes a vacuum conveying frame and a vacuum conveying chamber disposed on the vacuum conveying frame. The vacuum conveying chamber is connected to the outlet of the vacuum pump through an air passage. The inlet of the vacuum conveying chamber is connected to an inlet pipe. The bottom outlet of the vacuum conveying chamber is connected to a conveying pipe. The conveying pipe is a conveying pipe that is inclined downward. The permanent magnet iron separator is a pipeline type iron separator, which is installed on the discharge pipeline of the vacuum conveying silo. The coarse washing tank assembly includes an upward-opening, hollow, arc-shaped coarse washing tank. The feed inlet of the coarse washing tank is connected to the end of the conveying pipe. An agitation assembly is installed inside the coarse washing tank, and a drain outlet is provided at the bottom of the coarse washing tank. The auger elevator is connected to the discharge port of the coarse washing tank, and the discharge end of the auger elevator is connected to the fine washing water collection tank assembly. The fine washing water collection tank assembly includes, from bottom to top, a fine washing water collection tank, a centrifugal drum screen assembly, a high-pressure cleaning assembly, and a fine washing tank cover. The centrifugal drum screen assembly has a discharge inclined plate connected to its end, and a collection bucket connected to the bottom end of the discharge inclined plate. The high-pressure cleaning assembly includes a high-pressure pipe located above the centrifugal drum screen assembly and a high-pressure nozzle opened on the pipe. The fine washing tank cover is adapted to the fine washing water collection tank and covers the top of the centrifugal drum screen assembly. The cleaning pipeline assembly includes an inlet pipe connected to an external water source, and the inlet pipe is provided with a first flushing branch pipe located above the discharge inclined plate. Furthermore, a permanent magnet iron removal frame is provided at the outlet of the coarse washing tank.

[0006] Furthermore, an overflow component is provided inside the coarse washing tank and at the feed end. The overflow component includes an overflow trough frame spanning the coarse washing tank. The overflow trough frame is an upward-opening hollow structure. Overflow holes are evenly provided on the left, right, and bottom surfaces of the overflow trough frame. The diameter of the overflow holes is smaller than the diameter of soybean particles. An overflow trough that penetrates the coarse washing tank vertically is provided at the center of the bottom surface of the overflow trough frame.

[0007] Furthermore, the stirring assembly includes two stirring shafts arranged parallel to each other in the coarse washing tank. One end of each stirring shaft is fixed to the bottom of the coarse washing tank through a bearing connecting seat, and the other end is provided with a transmission gear. The transmission gear is connected to drive the stirring shaft to rotate synchronously. Several sets of stirring blades are staggered along the length direction of the two stirring shafts.

[0008] Furthermore, the fine washing water collection tank is connected to the discharge end of the auger elevator through a flow guide connector. The flow guide connector includes a downwardly inclined flow guide plate, which is rectangular in shape, and protective skirts are provided on both sides of the flow guide plate that are perpendicularly connected to it.

[0009] Furthermore, the water inlet pipe is also connected to a second flushing branch pipe located above the flow guide connector.

[0010] Furthermore, the centrifugal drum screen assembly includes a rolling shaft located on the fine washing water collection tank. One end of the rolling shaft is connected to the fine washing water collection tank through a bearing seat connector, and the other end is connected to the centrifugal drive through a crank connecting rod. The centrifugal drive is located on the outer wall of the coarse washing tank. Several drum screen fixing brackets are provided along the length of the rolling shaft. The drum screen fixing brackets are all connected to the centrifugal drum screen. Through holes are uniformly opened on the centrifugal drum screen.

[0011] Furthermore, a reinforcing bearing seat in the shape of a lug is provided on the other end of the rolling shaft, and the reinforcing bearing seat is connected to the coarse washing tank through a frame-shaped fastener.

[0012] Furthermore, the centrifugal drum screen is configured in the shape of a hexagonal prism, and the stirring propeller includes six drum screen fixing brackets arranged along the circumference of the rolling shaft. Each drum screen fixing bracket is connected to each prism face of the centrifugal drum screen, and each prism face of the centrifugal drum screen is uniformly provided with through holes.

[0013] Furthermore, the fine washing water collection tank is installed directly above the coarse washing tank by a fixing member, and a drain valve is provided at the bottom center of the fine washing water collection tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention uses a vacuum unit to create negative pressure in the vacuum conveying bin, and utilizes the principle of negative pressure self-absorption to achieve automatic feeding of soybean raw materials, completely replacing the traditional manual feeding operation. It has a high degree of automation, greatly reduces labor intensity, and improves production efficiency.

[0015] 2. This invention features a two-stage permanent magnet iron removal device. The first stage is a pipeline-type permanent magnet iron remover installed on the feed pipeline to remove ferromagnetic metal impurities before the raw material enters the washing tank. The second stage is a permanent magnet iron removal device installed at the outlet of the coarse washing tank to remove iron again after coarse washing and before entering the fine washing tank. The two stages of iron removal work together to achieve good iron removal effect, ensuring the complete removal of ferromagnetic metal impurities and improving food safety.

[0016] 3. This invention adopts a dual cleaning process of "coarse washing + fine washing". The coarse washing tank removes mud and dust from the surface of soybeans through a stirring device; the fine washing water collection tank uses a roller conveyor device in conjunction with a high-pressure spray device, and adopts a combination of spiral propulsion, roller washing and high-pressure spraying to further remove residual impurities. The two-stage cleaning works together to ensure high cleaning quality and thorough cleaning.

[0017] 4. This invention achieves the recycling of cleaning water through a water circulation system. The cleaning water from the fine washing collection tank enters the coarse washing tank through a drain valve. The coarse washing tank maintains the cleaning water volume through a water-fixing plate, and excess water is discharged through an overflow port. The spray cleaning water can be reused after filtration, which greatly saves water resources while ensuring cleaning quality, thus balancing efficiency and environmental protection.

[0018] 5. This invention systematically integrates vacuum negative pressure automatic feeding, two-stage permanent magnet iron removal, dual cleaning and water resource recycling into one device. The subsystems work together to form a complete soybean cleaning production line. The system has strong integration and good industrial application prospects. Attached Figure Description To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an isometric schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the coarse washing tank assembly; Figure 4 This is a structural schematic diagram of the fine washing water collection tank assembly; Figure 5 This is a schematic diagram of the centrifugal drum screen assembly; Figure 6 This is a schematic diagram of the overflow component. Reference numerals: 1. Coarse washing tank assembly; 1-1. Coarse washing tank; 1-2. Agitator assembly; 1-2-1. Agitator shaft; 1-2-2. Transmission gear; 1-2-3. Agitator blade; 1-3. Drain outlet; 2. Fine washing water collection tank assembly; 2-1. Fine washing water collection tank; 2-1-1. Drain valve; 2-2. Centrifugal drum screen assembly; 2-2-1. Rolling shaft; 2-2-2. Bearing connector; 2-2-3. Crank connecting... 2-2-4. Rod, Centrifugal Drive, 2-2-5. Agitator Propeller, 2-2-6. Rotary Screen Fixing Bracket, 2-2-7. Reinforced Bearing Seat, 2-2-8. Fixing Component, 2-3. High-Pressure Cleaning Assembly, 2-4. Fine Washing Tank Cover, 2-5. Discharge Inclined Plate, 2-5-1. Guide Inclined Plate, 2-5-2. Protective Vertical Plate, 2-6. Guide Connector, 2-6-1. Guide Plate, 2-6-2. Protective Skirt 3. Screw Conveyor; 3-1. Conveyor Body; 3-2. Drive Motor; 4. Vacuum Unit; 4-1. Motor; 4-2. Vacuum Pump; 4-3. Unit Platform; 4-4. Rolling Wheel; 5. Vacuum Conveying Assembly; 5-1. Vacuum Conveying Frame; 5-2. Vacuum Conveying Bin; 6. Permanent Magnet Separator; 7. Feed Pipe; 8. Conveying Pipe; 9. Collection Bucket; 10. Water Inlet Pipe; 10-1. First Flushing Branch Pipe; 10-2. Switch Valve; 10-3. Second Flushing Branch Pipe; 10-4. Switch; 11. Permanent Magnet Separator Frame; 12. Overflow Assembly; 12-1. Overflow Slot Frame; 12-2. Overflow Hole; 12-3. Overflow Slot. Detailed Implementation

[0020] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0023] like Figure 1 The present invention presents a specific embodiment of a soybean cleaning device based on vacuum conveying dual-tank cleaning, which includes a coarse washing tank assembly 1, a fine washing water collection tank assembly 2 and an auger elevator 3, as well as a vacuum unit 4, a vacuum conveying assembly 5, a permanent magnet iron separator 6 and a cleaning pipeline assembly.

[0024] The vacuum unit 4 includes a motor 4-1 and a vacuum pump 4-2. Specifically, the motor 4-1 is mounted on the unit platform 4-3. In this embodiment, the bottom of the unit platform 4-3 is provided with rolling wheels 4-4 to facilitate its movement. The unit platform 4-3 is fixedly connected to the vacuum pump 4-2 through a connector. The vacuum pump 4-2 is provided with an exhaust pipe 4-5. The exhaust pipe 4-5 is used to discharge the gas extracted during the operation of the vacuum pump 4-2, maintain the negative pressure state in the vacuum conveying pipeline, and rely on the pressure difference to smoothly suck and transport the soybeans to be cleaned stored in the vacuum conveying component 5 to the subsequent processing steps, ensuring the continuous and stable operation of the vacuum conveying operation.

[0025] The vacuum conveying assembly 5 includes a vacuum conveying frame 5-1 and a vacuum conveying chamber 5-2 mounted on the vacuum conveying frame 5-1. Specifically, the height of the vacuum conveying frame 5-1 is adjusted to accommodate the connection and installation requirements between the discharge end of the vacuum conveying chamber 5-2 and the feed end of the subsequent permanent magnet separator 6, as well as the actual layout of the factory's workspace. A maintenance ladder and operating platform are also added to the side of the vacuum conveying frame 5-1 to facilitate regular maintenance of the seals of the vacuum conveying chamber 5-2, ensuring the stability of the negative pressure during the vacuum conveying process and preventing [problems]. In the event of insufficient conveying power, the vacuum conveying hopper 5-2 is connected to the outlet of the vacuum pump 4-2 via an air passage. The inlet of the vacuum conveying hopper 5-2 is connected to the feed pipe 7. Specifically, in this embodiment, the feed pipe 7 is set to be inclined downwards and is connected to the feeding platform. The bottom outlet of the vacuum conveying hopper is connected to a conveying pipe, which is also inclined downwards. Under the action of the vacuum unit 4, the soybeans to be cleaned stored on the feeding platform are conveyed from the feed pipe 7 to the vacuum conveying hopper 5-2 and then output from the conveying pipe 8. The permanent magnet iron separator 6 is a pipeline iron separator, which is installed on the conveying pipe 8 and is used for the first iron removal of soybean raw materials. The coarse washing tank assembly 1 includes a coarse washing tank 1-1 that is open upward and hollow in the shape of an arc groove. The feed end of the coarse washing tank 1-1 is connected to the end of the conveying pipe 8. Specifically, the end of the conveying pipe 8 is fixed to the coarse washing tank 1-1 by a connector. The soybeans to be washed enter the coarse washing tank 1-1 from the conveying pipe 8 for coarse washing. The coarse washing tank 1-1 is equipped with a stirring assembly 1-2. Specifically, the stirring assembly 1-2 is used to remove mud and dust from the surface of the soybeans and push the soybeans toward the auger elevator 3. The bottom of the coarse washing tank 1-1 is provided with a drain outlet 1-3. The auger elevator 3 is connected to the discharge end of the coarse washing tank 1-1, and the discharge end of the auger elevator 3 is connected to the fine washing water collection tank assembly 2. Specifically, the auger elevator 3 includes an elevator body 3-1 that is vertically arranged and connected to the discharge end of the coarse washing tank 1-1. The inlet of the elevator body 3-1 is connected to the discharge end of the coarse washing tank 1-1. The top of the elevator body 3-1 is provided with a drive motor 3-2. The drive motor 3-2 can drive the soybeans that are coarsely washed in the coarse washing tank 1-1 from the elevator body 3-1 into the fine washing water collection tank assembly 2. The fine washing water collection tank assembly 2 includes, from bottom to top, a fine washing water collection tank 2-1, a centrifugal drum screen assembly 2-2, a high-pressure cleaning assembly 2-3, and a fine washing tank cover 2-4. A discharge inclined plate 2-5 is connected to the end of the centrifugal drum screen assembly 2-2, and a collection bucket 9 is connected to the bottom of the discharge inclined plate 2-5. Specifically, in this embodiment, the discharge inclined plate 2-5 includes a downwardly inclined guide plate 2-5-1 and a protective vertical plate 2-5-2 located at the corner of the guide plate 2-5-1. The guide plate 2-5-1 is used to guide the washed soybeans into the collection bucket 9. The protective vertical plate 2-5... -2 is used to block splashed soybeans on the guide plate 2-5-1. The high-pressure cleaning assembly 2-3 includes a high-pressure pipe located above the centrifugal drum screen assembly 2-2 and a high-pressure nozzle opened on the pipe. The high-pressure cleaning assembly sprays high-pressure water onto the centrifugal drum screen assembly. Specifically, in this embodiment, the pressure of the high-pressure nozzle is set to 30-70 MPa. The fine washing tank cover 2-4 is adapted to the fine washing water collection tank 2-1. The fine washing tank cover 2-4 covers the top of the fine washing water collection tank 2-1, and the fine washing tank cover 2-4 covers the centrifugal drum screen assembly 2-2 and the high-pressure cleaning assembly 2-3 inside. Figure 4As shown, specifically, the fine washing water collection tank 2-1 is provided with an upward-opening, hollow, and arc-shaped tank body. The fine washing water collection tank 2-1 is used to collect the water used to wash soybeans and the impurities washed off the soybeans. The centrifugal drum assembly 2-2 centrifugally rolls and washes the soybeans while spirally pushing them onto the discharge inclined plate 2-5, and then they fall into the collection bucket 9. The clean material in the collection bucket 9 is pumped to the raw material processing workshop. The cleaning pipeline assembly includes an inlet pipe 10 connected to an external water source. The inlet pipe 10 is provided with a first flushing branch pipe 10-1 located above the discharge inclined plate 2-5. The first flushing branch pipe 10-1 is used to allow soybeans located on the discharge inclined plate 2-5 to flow into the collection bucket 9 with the water flow. Specifically, the first flushing branch pipe 10-1 is connected to the inlet pipe 10, and the first flushing branch pipe 10-1 is provided with a switch valve 10-2 to control its opening and closing. In this embodiment, the first flushing branch pipe 10-1 is fixed to the coarse washing tank 1-1 by a connector. In this embodiment, the fine washing water collection tank 2-1 is connected to the discharge end of the screw conveyor via a flow guide connector 2-6. The flow guide connector 2-6 includes a downwardly inclined flow guide plate 2-6-1, which is rectangular in shape. Both sides of the flow guide plate 2-6-1 are provided with protective skirts 2-6-2 that are vertically connected to it. Specifically, one end of the flow guide plate 2-6-1 is embedded under the discharge end of the conveyor body 3-1, and the other end is located inside the centrifugal drum screen assembly 2-2. The flow guide plate 2-6-1 and the protective skirts 2-6-2 are integrally formed from stainless steel.

[0026] In this embodiment, the centrifugal drum screen assembly 2-2 includes a rolling shaft 2-2-1 located on the fine washing water collection tank 2-1. One end of the rolling shaft 2-2-1 is connected to the fine washing water collection tank 2-1 via a bearing seat connector 2-2-2. Specifically, the bearing seat connector 2-2-2 includes a bearing seat connected to the end of the rolling shaft 2-2-1 via a bearing. The bearing seat is connected to a frame-shaped connector, and both ends of the connector are fixed to the fine washing water collection tank 2-1. The other end of the rolling shaft 2-2-1 is connected to a centrifugal drive 2-2-4 via a crank connecting rod 2-2-3. The centrifugal drive 2-2-4 is located on the outer wall of the coarse washing tank 1-1. Several drum screen fixing brackets 2-2-5 are provided along the length of the rolling shaft 2-2-1. The drum screen fixing brackets 2-2-5 are all connected to the centrifugal drum screen 2-2-6. Figure 5 As shown, the centrifugal drum screen 2-2-6 encloses the rolling shaft 2-2-1 and the drum screen fixing bracket 2-2-5 within it. That is, the centrifugal drum screen 2-2-6 rotates synchronously with the rolling shaft 2-2-1. The centrifugal drum screen 2-2-6 centrifuges, stirs, and washes the soybeans while pushing the soybeans spirally to the outlet at the rear end.

[0027] In this embodiment, a lug-shaped reinforced bearing seat 2-2-7 is provided at the other end of the rolling shaft 2-2-1 near the crank connecting rod 2-2-3. The reinforced bearing seat 2-2-7 is connected to the coarse washing tank 1-1 via a frame-shaped fixing member 2-2-8. Specifically, both ends of the fixing member 2-2-8 are fixed to the coarse washing tank 1-1. The reinforced bearing seat 2-2-7 is provided on the rolling shaft 2-2-1 to bear the eccentric alternating load generated during the rotation of the rolling shaft 2-2-1. It cooperates with the bearing seat connector 2-2-2 at the other end to support the rolling shaft 2-2-1. The two ends of 2-1 form stable supports, effectively reducing the radial runout of the rolling shaft 2-2-1 during operation, avoiding the problem of uneven stress on the rolling shaft 2-2-1 over a long period of time, which can lead to shaft end wear and loosening. This improves the stability and reliability of the centrifugal drum screen assembly 2-2. At the same time, the lug-shaped structural design, combined with the installation method of the frame-shaped fastener 2-2-8, means that when the rolling shaft 2-2-1 or bearing needs to be inspected or replaced, only the fastener 2-2-8 needs to be disassembled to complete the shaft end disassembly, without the need to disassemble the entire coarse washing tank 1-1, which greatly reduces the difficulty and time cost of equipment maintenance.

[0028] In this embodiment, the centrifugal drum screen 2-2-6 is configured in a hexagonal prism shape. Specifically, the end of the fine washing water collection tank 2-1 has an arc-shaped clearance groove 2-1-1 to ensure that the centrifugal drum screen 2-2-6 can rotate at high speed with the rolling shaft 2-2-1, avoiding collision with the fine washing water collection tank 2-1. The stirring propeller 2-2-5 includes six drum screen fixing brackets (2-2-5) arranged along the circumference of the rolling shaft 2-2-1. Each drum screen fixing bracket (2-2-5) is connected to each prism face of the centrifugal drum screen 2-2-6. The hexagonal prism-shaped centrifugal drum screen 2-2-6, in conjunction with the stirring provided on each prism face, ensures a stable connection between the centrifugal drum screen 2-2-6 and the rolling shaft 2-2-1, and ensures continuous agitation of the soybeans during rotation, effectively preventing soybean clumping and slippage against the wall, allowing impurities such as mud, sand, and dead leaves attached to the soybean surface to be fully dislodged into the washing liquid. The stable support structure at the end can significantly reduce radial vibration during the operation of the centrifugal drum screen 2-2-6, reduce the endless wear of components, and extend the overall service life of the device. Each prism face of the centrifugal drum screen 2-2-6 is uniformly provided with through holes. On the one hand, this effectively reduces the weight of the entire centrifugal drum screen 2-2-6, reduces the load on the rolling shaft 2-2-1 during long-term operation, and reduces the endless wear of the support structure. The through hole design also allows impurities such as mud and sand separated from soybeans to quickly pass through the through holes and be discharged into the fine washing water collection tank 2-1 during centrifugal rotation, preventing impurities from remaining inside the centrifugal drum screen 2-2-6 and affecting the subsequent soybean washing effect, thus ensuring the effective separation of impurities and soybeans. At the same time, the uniformly provided through holes ensure a uniform weight distribution of the centrifugal drum screen 2-2-6, preventing eccentric shaking during rotation, further improving the stability of the device operation, and also shortening the draining and dehydration time after soybean washing, thereby improving the overall processing efficiency.

[0029] In this embodiment, the fine washing water collection tank 2-1 is installed directly above the coarse washing tank 1-1 via a connector, and a drain valve 2-1-1 is provided at the bottom center of the fine washing water collection tank 2-1. The drain valve 2-1-1 can drain the water in the fine washing water collection tank 2-1 into the coarse washing tank 1-1 for reuse.

[0030] In this embodiment, the inlet pipe 10 is also connected to a second flushing branch pipe 10-3 located above the flow guide connector 2-6, such as... Figure 2 As shown, specifically, the second flushing branch pipe 10-3 is connected to the water inlet pipe 10, and the second flushing branch pipe 10-3 is equipped with a switch 10-4 to control its opening and closing. In this embodiment, the second flushing branch pipe 10-3 is fixed to the coarse washing tank 1-1 by a connector. The second flushing branch pipe 10-3 is used to flush the soybeans located on the guide connector 2-6 into the centrifugal drum screen assembly 2-2.

[0031] In this embodiment, a permanent magnet iron removal frame 11 is provided at the outlet of the coarse washing tank 1-1, such as... Figure 3 As shown, this device is used for a second iron removal process on soybean raw materials after coarse washing. It can effectively adsorb the fine iron impurities that loosen and fall off the surface of the soybeans during the coarse washing process, preventing these iron impurities from entering the subsequent fine washing and processing steps. This not only prevents iron impurities from scratching the rotating parts in the fine washing process and extending the service life of the vulnerable parts of the device, but also prevents iron impurities from mixing into the final soybean product and affecting the product quality.

[0032] In this embodiment, an overflow component 12 is provided inside the coarse washing tank 1-1 and located at the feed end. The overflow component 12 includes an overflow trough frame 12-1 spanning the coarse washing tank 1-1. The overflow trough frame 12-1 is a hollow structure with an upward opening. Specifically, the overflow trough frame 12-1 is a hollow cuboid with an opening at the top. Overflow holes 12-2 are evenly provided on the left, right, and bottom surfaces of the overflow trough frame 12-1. The diameter of the overflow holes 12-2 is smaller than the diameter of soybean particles, so that only water passes through the overflow holes 12-2. An overflow channel 12-3 that vertically penetrates the coarse washing tank is provided at the center of the bottom surface of the overflow trough frame 12-1. Figure 6 As shown, specifically, the overflow channel 12-3 is rectangular in shape. An overflow component 12 is installed inside the coarse washing tank 1-1. When the water level in the coarse washing tank 1-1 is higher than the bottom of the overflow channel frame 12-1, water will flow into the overflow channel frame 12-1 from the overflow holes 12-2 on the three sides, and then be discharged out of the coarse washing tank 1-1 through the overflow channel 12-3. At the same time, combined with the discharge from the drain outlet 1-3, it ensures that the water level in the coarse washing tank 1-1 remains within a stable range and will not overflow due to excessive water level. Meanwhile, light impurities, broken bean skins, grass clippings, and other floating objects that float to the surface during the coarse washing process can be discharged into the overflow channel frame 12-1 with the overflow. Combined with the discharge outlet 1-3, heavy impurities such as mud, sand, and iron filings that have settled at the bottom of the coarse washing tank are discharged. This dual discharge and impurity removal effectively improves the cleanliness of the soybean coarse washing, reduces the processing burden of the subsequent fine washing process, and ensures the overall cleaning efficiency and cleaning effect.

[0033] In this embodiment, the stirring assembly 1-2 includes two stirring shafts 1-2-1 arranged parallel to each other within the coarse washing tank 1-1. One end of each stirring shaft 1-2-1 is fixed to the bottom of the coarse washing tank 1-1 via a bearing connecting seat. Specifically, in this embodiment, the bearing connecting seat is shaped like a lug, and the center of the bearing connecting seat is connected to one end of the stirring shaft 1-2-1 via a bearing. Both sides of the bearing connecting seat are fixed to the bottom of the coarse washing tank 1-1 via bolts. The other end of each stirring shaft 1-2-1 is provided with a transmission gear 1-2-2. Specifically, in this embodiment, the transmission gear 1-2-2 is located at the feed end of the coarse washing tank 1-1, and the bearing fixing end is located at the discharge end of the coarse washing tank 1-1. The transmission gear 1-1-2 drives the stirring shaft 1-2-1 to rotate synchronously. Several sets of stirring blades 1-2-3 are staggered along the length of the two stirring shafts 1-2-1, such as... Figure 3 As shown, specifically, in this embodiment, three sets of stirring blades are arranged in an alternating pattern on both stirring shafts. The stirring blades 1-2-3 can roll and wash the soybeans while pushing them toward the outlet.

[0034] When using this invention: The water inlet pipe 10 is connected to an external water source, and the soybean raw materials are first stored on the feeding platform. Under the action of the vacuum unit 4, the soybeans are transported through the feeding pipe 7 to the vacuum conveying bin 5-2, and then enter the conveying pipe 8. The pipeline permanent magnet separator 6 installed on the conveying pipe 8 completes the first iron removal operation on the soybeans to be washed, so as to remove ferromagnetic impurities from the raw materials. Subsequently, the soybeans are put into the coarse washing tank 1-1 for coarse washing. The drive mechanism of the stirring assembly 1-2 is activated. The two stirring shafts 1-2-1 rotate synchronously under the drive of the transmission gear 1-2-2. The stirring blades 1-2-3, staggered on the two stirring shafts 1-2-1, continuously tumble the soybeans, rolling and washing them in water to remove surface dirt and large particles of impurities. Simultaneously, the soybeans are gradually moved towards the discharge end of the coarse washing tank 1-1. When the soybeans reach the outlet of the coarse washing tank 1-1, the second permanent magnet iron separator 11 at the outlet completes the second iron removal operation, further removing residual iron impurities from the soybeans. The soybeans, having completed the coarse washing and iron removal, enter the auger elevator 3, and are then... The duct elevator 3 transports the soybeans to the fine washing and collection tank assembly 2 for fine washing. During the water supply process of the inlet pipe 10, the second flushing branch pipe 10-3 further flushes the soybeans introduced through the guide connector 2-6. Subsequently, the soybeans enter the centrifugal drum screen assembly 2-2. During the rotation of the centrifugal drum screen 2-2-6, the sewage and fine impurities mixed in the soybeans are discharged through the through holes on the prism surface, completing the fine washing and water removal operation of the soybeans. Finally, the washed soybeans are discharged from the discharge end through the discharge inclined plate 2-5 combined with the flushing and water guidance of the first flushing branch pipe 10-1 into the collection bucket 9 for collection. Finally, they are pumped to the raw material processing workshop.

[0035] During the cleaning process, the cleaning water in the fine cleaning collection tank 2-1 is discharged into the coarse cleaning tank 1-1 through the drain valve 2-1-1 for coarse cleaning. When the water level in the coarse cleaning tank 1-1 is higher than the bottom of the overflow trough frame 12-1, the water will flow into the overflow trough frame 12-1 from the overflow holes 12-2 on the three sides of the overflow trough frame 12-1, and then be discharged out of the coarse cleaning tank 1-1 through the overflow trough 12-3. At the same time, the water is discharged through the drain outlet 1-3 to ensure that the water level in the coarse cleaning tank 1-1 remains within a stable range.

[0036] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A soybean washing device based on vacuum conveying dual-tank washing, comprising a coarse washing tank assembly (1), a fine washing water collection tank assembly (2), and an auger elevator (3), characterized in that: It also includes a vacuum unit (4), a vacuum conveying assembly (5), a permanent magnet separator (6), and a cleaning pipeline assembly; The vacuum unit (4) includes a motor (4-1), a vacuum pump (4-2), and a unit platform (4-3). The motor (4-1) is mounted on the unit platform (4-3), and the unit platform (4-3) is fixedly connected to the vacuum pump (4-2) through a connector. The vacuum conveying assembly (5) includes a vacuum conveying frame (5-1) and a vacuum conveying chamber (5-2) disposed on the vacuum conveying frame (5-1). The vacuum conveying chamber (5-2) is connected to the outlet of the vacuum pump (4-2) through an air passage. The inlet of the vacuum conveying chamber (5-2) is connected to an inlet pipe (7). The bottom outlet of the vacuum conveying chamber (5-2) is connected to a conveying pipe (8). The conveying pipe (8) is inclined downward. The permanent magnet iron separator (6) is a pipeline iron separator, which is installed on the conveying pipe (8); The coarse washing tank assembly (1) includes a coarse washing tank (1-1), the inlet of the coarse washing tank (1-1) is connected to the end of the conveying pipe (8), a stirring assembly (1-2) is provided inside the coarse washing tank (1-1), and a drain outlet (1-3) is provided at the bottom of the coarse washing tank (1-1). The fine washing water collection tank assembly (2) includes a fine washing water collection tank (2-1), a centrifugal drum screen assembly (2-2), a high-pressure cleaning assembly (2-3), and a fine washing tank cover (2-4) arranged sequentially from bottom to top. The centrifugal drum screen assembly (2-2) is connected to a discharge inclined plate (2-5) at its end, and a collection bucket (9) is connected to the bottom end of the discharge inclined plate (2-5). The high-pressure cleaning assembly (2-3) includes a high-pressure pipe located above the centrifugal drum screen assembly (2-2) and a high-pressure nozzle opened on the pipe. The fine washing tank cover (2-4) is adapted to the fine washing water collection tank (2-1). The cleaning pipe assembly includes an inlet pipe (10) connected to an external water source, and the inlet pipe (10) is provided with a first flushing branch pipe (10-1) located above the discharge inclined plate (2-5).

2. The soybean washing device based on vacuum conveying dual-tank cleaning according to claim 1, characterized in that: The fine washing water collection tank (2-1) is connected to the discharge end of the screw conveyor (3) through the flow guide connector (2-6). The flow guide connector (2-6) includes a flow guide plate (2-6-1) that is inclined downward. The flow guide plate (2-6-1) is rectangular in shape. The two sides of the flow guide plate (2-6-1) are provided with protective skirts (2-6-2) that are vertically connected to it.

3. The soybean washing device based on vacuum conveying dual-tank cleaning according to claim 2, characterized in that: The fine washing water collection tank (2-1) is installed directly above the coarse washing tank (1-1) by a fixing member, and a drain valve (2-1-1) is provided at the bottom center of the fine washing water collection tank (2-1).

4. The soybean washing device based on vacuum conveying dual-tank cleaning according to claim 3, characterized in that: A permanent magnet iron removal frame (11) is provided at the outlet of the coarse washing tank (1-1).

5. The soybean washing device based on vacuum conveying dual-tank cleaning according to any one of claims 1 to 4, characterized in that: An overflow component (12) is provided inside the coarse washing tank (1-1) at the feed end. The overflow component (12) includes an overflow trough frame (12-1) spanning the coarse washing tank (1-1). The overflow trough frame (12-1) is a hollow structure with an upward opening. Overflow holes (12-2) are evenly opened on the left, right and bottom surfaces of the overflow trough frame (12-1). The diameter of the overflow holes (12-2) is smaller than the diameter of soybean particles. An overflow trough (12-3) is opened vertically through the coarse washing tank at the center of the bottom surface of the overflow trough frame (12-1).

6. The soybean washing device based on vacuum conveying dual-tank cleaning according to claim 5, characterized in that: The stirring assembly (1-2) includes two stirring shafts (1-2-1) arranged parallel to each other in the coarse washing tank (1-1). One end of each stirring shaft (1-2-1) is fixed to the bottom of the coarse washing tank (1-1) through a bearing connecting seat, and the other end is provided with a transmission gear (1-2-2). The transmission gear (1-2-2) is connected to drive the stirring shaft (1-2-1) to rotate synchronously. Several sets of stirring blades (1-2-3) are arranged alternately along the length direction of the two stirring shafts (1-2-1).

7. The soybean washing device based on vacuum conveying dual-tank cleaning according to claim 2, characterized in that: The inlet pipe (10) is also connected to a second flushing branch pipe (10-3) located above the flow guide connector (10).

8. The soybean washing device based on vacuum conveying dual-tank cleaning according to claim 5, characterized in that: The centrifugal drum screen assembly (2-2) includes a rolling shaft (2-2-1) located on the fine washing water collection tank (2-1). One end of the rolling shaft (2-2-1) is connected to the fine washing water collection tank (2-1) through a bearing seat connector (2-2-2), and the other end is connected to the centrifugal drive (2-2-4) through a crank connecting rod (2-2-3). The centrifugal drive (2-2-4) is located on the outer wall of the coarse washing tank (1-1). Several drum screen fixing brackets (2-2-5) are provided along the length of the rolling shaft (2-2-1). The drum screen fixing brackets are all connected to the centrifugal drum screen (2-2-6). The centrifugal drum screen (2-2-6) is uniformly provided with through holes.

9. The soybean washing device based on vacuum conveying dual-tank cleaning according to claim 8, characterized in that: The other end of the rolling shaft (2-2-1) is provided with a reinforcing bearing seat (2-2-7) in the shape of a hanging lug. The reinforcing bearing seat (2-2-7) is connected to the coarse washing tank (1-1) through a frame-shaped fastener (2-2-8).

10. The soybean washing device based on vacuum conveying dual-tank cleaning according to claim 8, characterized in that: The centrifugal drum screen (2-2-6) is configured in the shape of a hexagonal prism. The stirring propeller (2-2-5) includes six drum screen fixing brackets (2-2-5) arranged around the circumference of the rolling shaft (2-2-1). Each drum screen fixing bracket (2-2-5) is connected to each prism face of the centrifugal drum screen (2-2-6). Each prism face on the centrifugal drum screen (2-2-6) is uniformly provided with through holes.

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