Low-temperature ultrasonic auxiliary grain cleaning and dewatering integrated machine

Abstract

The utility model relates to grain cleaning equipment technical field especially relates to a low temperature ultrasonic auxiliary grain cleaning dehydration all -in -one, including the cleaning tank, the cleaning tank is equipped with the water storage tank of top opening, the lateral wall of water storage tank is fixed with the refrigeration pipe and installs, the bottom of water storage tank is installed with a plurality of ultrasonic transducer, the cleaning tank outside is equipped with the water inlet pipe and drainage component, the water storage tank is coaxially installed with the drum. The utility model discloses a rotatable drive drum is arranged in the water storage tank, and the drum is communicated between the water storage tank, to integrate the cleaning and dehydration function after cleaning in an organic whole, the rotation of the drum can drive the internal grain tumble to be fully contacted with the cleaning water, reaches the effect of uniform cleaning, and the grain is left in the drum after the drum drainage and carries out the subsequent dehydration treatment, realizes the seamless link of cleaning and dehydration process, not only effectively saves the space occupied by the equipment, but also improves the grain cleaning, dehydration processing efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of grain cleaning equipment, and in particular to a low-temperature ultrasonic-assisted grain cleaning and dehydration integrated machine. Background Technology

[0002] Grain washing equipment is a core piece of equipment in the grain processing industry chain used to remove impurities from the surface and inside of grain particles, such as mud, sand, and pesticide residues. It mainly uses physical means to clean and remove impurities from grains. Traditional cleaning methods include water washing and air sieving.

[0003] Traditional cleaning methods have many drawbacks. For some stubborn impurities attached to the surface of grains, water washing is not very effective. Although blower screening can separate some larger impurities, it is difficult to effectively remove small sand, pesticide residues and other small impurities. In addition, the blowing process may generate dust, which will pollute the working environment and affect the health of operators. Utility Model Content

[0004] The purpose of this invention is to provide a low-temperature ultrasonic-assisted grain washing and dehydration integrated machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A low-temperature ultrasonic-assisted grain washing and dehydration integrated machine includes a washing tank with a top-opening water storage tank inside. The washing tank is characterized by: a cooling pipe fixedly installed on the side wall of the water storage tank; several ultrasonic transducers installed at the bottom of the water storage tank; a water inlet pipe outside the washing tank; a roller coaxially mounted in the water storage tank; a drive motor at the bottom of the washing tank; the output end of the drive motor being connected to the roller; the roller communicating with the water storage tank; several scattering ridges evenly spaced on the inner wall of the roller; and a control terminal installed outside the washing tank.

[0006] Preferably, the water inlet pipe is located on the upper end of the side wall of the cleaning tank, and one end of it passes through the side wall of the cleaning tank and communicates with the water storage tank. The water inlet pipe is equipped with a water inlet valve, and the water inlet valve is electrically connected to the control terminal.

[0007] Preferably, a second drain pipe is fixedly installed on the side of the cleaning tank near the bottom. One end of the second drain pipe is connected to the bottom wall of the water storage tank, and the other end passes through the side wall of the cleaning tank and is connected to a drain pump. The drain pump is electrically connected to a control terminal, and the outlet of the drain pump is connected to a filter box.

[0008] Preferably, a filter screen is provided at the top inside the filter box, and a first drain pipe with one end connected to the filter box is provided at the bottom of the side wall of the filter box.

[0009] Preferably, the refrigeration pipe is spirally coiled along the axis of the water storage tank and is disposed inside the water storage tank.

[0010] Preferably, the refrigeration pipe passes through the cleaning tank and is connected to a cold storage circulation assembly, which is provided with a liquid inlet port.

[0011] Preferably, the drum is provided with a plurality of first connecting holes and a plurality of second connecting holes. The plurality of first connecting holes are equidistantly distributed along the axial direction of the drum and are disposed between two adjacent scattering ridges. The plurality of second connecting holes are disposed on the bottom wall of the drum.

[0012] Preferably, the scattering ridge extends along the axial direction of the drum, and the cross-section of the scattering ridge is triangular, with one end face connected to the inner wall of the drum, and the other two end faces located inside the drum and filled with protrusions.

[0013] Preferably, the top side of the cleaning tank is covered with a lid, and a positioning ring is provided on the side of the lid facing the water storage tank. The positioning ring is engaged with the water storage tank and the roller. Support columns are also provided at the four corners of the bottom of the cleaning tank.

[0014] Preferably, the positioning ring has a plurality of guide wheels equidistantly arranged on one end face of the box cover, and the box cover has an annular limiting groove, with the plurality of guide wheels slidably connected to the limiting groove.

[0015] Compared with the prior art, this utility model provides a low-temperature ultrasonic-assisted grain washing and dehydration integrated machine, which has the following beneficial effects: 1. This utility model integrates the washing and dehydration functions by setting a rotatable drum in the water storage tank and connecting the drum to the water storage tank. The rotation of the drum can cause the grain inside to tumble so that it can fully contact the washing water and achieve a uniform washing effect. After the drum drains, the grain remains in the drum for subsequent dehydration treatment, realizing a seamless connection between the washing and dehydration processes. This not only effectively saves the space occupied by the equipment, but also improves the processing efficiency of grain washing and dehydration. 2. This utility model, through the first and second connecting holes set on the drum, combined with the scattering ridge and its refractive coating, allows ultrasonic waves to propagate through water and enter the drum, making full contact with the grain. Utilizing the cavitation and mechanical effects of ultrasonic waves, dirt and impurities on the surface of the grain are further removed. The design of the scattering ridge and its refractive coating enables ultrasonic waves to form multi-angle reflections and focusing inside the drum, allowing the ultrasonic waves to make full contact with the grain and achieving efficient cleaning of the grain. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the upper right side of this utility model; Figure 2 This is a schematic diagram of the three-dimensional structure of the upper left rear of this utility model; Figure 3 This is a three-dimensional sectional view of the internal structure of this utility model; Figure 4 This is a three-dimensional structural diagram of the connection state between the refrigeration pipe and the cold storage circulation component of this utility model. Figure 5 This is a partial cross-sectional view of the three-dimensional structure of the drainage component of this utility model; Figure 6 This is a three-dimensional structural diagram of the connection state between the roller and the drive motor of this utility model. Figure 7 This is a partial cross-sectional view of the three-dimensional structure of the roller of this utility model; Figure 8 This is a partial cross-sectional view of the connection between the positioning ring and the box cover of this utility model.

[0017] In the diagram: 1. Cleaning tank; 101. Water storage tank; 2. Water inlet pipe; 201. Water inlet valve; 3. Control terminal; 4. Support column; 5. Filter box; 501. First drain pipe; 502. Filter screen; 6. Drain pump; 7. Roller; 701. First connecting hole; 702. Second connecting hole; 703. Scattering ridge; 704. Second drain pipe; 8. Refrigeration pipe; 9. Box cover; 901. Limiting groove; 1001. Guide wheel; 10. Positioning ring; 11. Cold storage circulation assembly; 1101. Liquid inlet port; 12. Ultrasonic transducer; 13. Drive motor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0020] Example, refer to Figure 1 - Figure 8A low-temperature ultrasonic-assisted grain washing and dehydration integrated machine includes a washing tank 1. The washing tank 1 has a top-opening water storage tank 101 for storing water for grain washing. Cooling pipes 8 are fixedly installed on the side walls of the water storage tank 101 to cool the water stored in the tank, thus performing low-temperature washing of the grain and avoiding nutrient decomposition and loss caused by high temperatures, better preserving the natural nutritional value of the grain. Several ultrasonic transducers 12 are installed at the bottom of the water storage tank 101 for connecting to an external ultrasonic generator, converting electrical energy into mechanical vibration. This mechanical vibration is transmitted to the washing water, forming alternating dense and sparse sound waves that propagate forward in the liquid, and are further propagated by the washing water. A water inlet pipe 2 is provided outside the washing tank 1 for introducing washing water into the water storage tank 101. A roller 7 is coaxially mounted in the water storage tank 101 to hold the grain to be washed. A drive motor 13 (model ABB M2QA) is located at the bottom of the washing tank 1. A 132M4 variable frequency motor is used. The output of the drive motor 13 is connected to the drum 7, thereby driving the drum 7 to rotate. The rotation of the drum 7 agitates the grain inside. The drum 7 is connected to the water storage tank 101, allowing washing water to enter the drum 7 to soak the grain during the washing stage. At the same time, ultrasonic waves propagate with the help of the washing water and come into contact with the grain, removing impurities attached to the grain through the "cavitation effect". Several scattering ridges 703 are evenly spaced on the inner wall of the drum 7 to reflect, scatter, and diffuse ultrasonic waves. When ultrasonic waves propagate in the water and collide with the scattering ridges 703, diffuse reflection occurs, changing the original propagation direction and directing the sound wave energy to the center and corners of the drum 7. This enhances the uniformity and coverage of ultrasonic wave propagation within the drum 7, making the ultrasonic waves more uniform and comprehensive. When the ground comes into contact with the grain, the "cavitation effect" of ultrasonic waves is utilized. In the lesser part of the sound wave (the area of ​​reduced pressure), the liquid is stretched, and tiny vacuum bubble nuclei are generated inside. These vacuum bubble nuclei are rapidly compressed in the dense part of the sound wave (the area of ​​increased pressure). Because the frequency of ultrasonic waves is very high, this compression process is extremely short and violent. The cavitation bubbles do not have time to slowly shrink, but collapse and rupture instantly to form shock waves. The powerful shock waves and micro-jet can directly impact, tear, and peel off stubborn dirt attached to the surface and deep crevices of the grain. After the washing is completed, the washing water in the water storage tank 101 is discharged from the drum 7. The drive motor 13 drives the drum 7 to rotate and dehydrate the grain through centrifugal force. The washing tank 1 is also equipped with a control terminal 3. The drive motor 13 is electrically connected to the control terminal 3, thereby controlling the start and stop of the drive motor 13.

[0021] In use, the grain to be cleaned is placed inside the drum 7. The drive motor 13 is started via the control terminal 3, and an appropriate amount of cleaning water is introduced into the water storage tank 101 through the water inlet pipe 2. The cooling pipe 8 cools the cleaning water. When the water temperature reaches the set low temperature, the ultrasonic transducer 12 at the bottom of the water storage tank 101 is activated, allowing high-frequency sound waves to enter the water storage tank 101 and propagate with the help of the low-temperature cleaning water. The high-frequency sound waves are conducted through the water into the interior of the drum 7, making full contact with the grain. Its energy can penetrate into the folds and tiny cracks of the grain, areas that are difficult to reach with traditional brushing and water rinsing, thus achieving a thorough cleaning of the grain. At the same time, it can also break the intermolecular forces between the adhering substances and the grain surface, making the adhering substances more resistant to dirt and grime. The grain is easily detached. After the washing is completed, the wastewater in the drum 7 is discharged. The drum 7 is then driven by the drive motor 13 to rotate and centrifuge the grain for dehydration. The grain is quickly spun dry under centrifugal force. By setting the water storage tank 101 and the drum 7 coaxially, the overall structure of the washing device is more compact, reducing the equipment footprint and improving space utilization. It also ensures that the drum 7 runs more smoothly during the dehydration process, reducing noise and vibration during equipment operation. During the dehydration stage, the control terminal 3 can precisely control the speed and rotation time of the drive motor 13 according to the preset program to achieve the best dehydration effect, ensuring that the grain is fully spun dry without damaging the grain particles due to excessive rotation.

[0022] The main components, such as the washing tank 1 and the drum 7, are made of corrosion-resistant and easy-to-clean materials, with stainless steel being the preferred material. Stainless steel not only has good corrosion resistance, which can resist the erosion of various chemicals during the washing process and extend the service life of the equipment, but also has a smooth surface that does not easily retain dirt, making it easy to clean and maintain daily. This further ensures the hygiene and safety of the grain washing process and facilitates cleaning and maintenance after daily use, thus extending the service life of the equipment.

[0023] Furthermore, the water inlet pipe 2 is installed on the upper side wall of the cleaning tank 1, and one end of it passes through the side wall of the cleaning tank 1 and is connected to the water storage tank 101. The water inlet pipe 2 is equipped with a water inlet valve 201, which is electrically connected to the control terminal 3 to control the opening and closing of the water inlet pipe 2, thereby regulating the amount of water entering the water storage tank 101.

[0024] Furthermore, a second drain pipe 704 is fixedly installed on the side of the washing tank 1 near the bottom to discharge the wastewater generated after washing. One end of the second drain pipe 704 is connected to the bottom wall of the water storage tank 101, and the other end passes through the side wall of the washing tank 1 and is connected to a drain pump 6, model UPA90-250 self-priming centrifugal pump. The drain pump 6 is electrically connected to the control terminal 3, and the outlet of the drain pump 6 is connected to a filter box 5 to filter the wastewater and separate solid impurities and broken grain scraps.

[0025] During drainage, the drainage pump 6 is started, so that the second drainage pipe 704 connects the water storage tank 101 and the filter box 5. The wastewater generated after grain washing flows out through the second drainage pipe 704 to the filter box 5 for filtration and treatment under the driving action of the drainage pump 6.

[0026] Furthermore, a filter screen 502 is provided inside the filter box 5 at the top to block solid impurities contained in the sewage. A first drain pipe 501 with one end connected to the filter box 5 is provided at the bottom of the side wall of the filter box 5 to discharge the filtered sewage outward.

[0027] Furthermore, the refrigeration pipe 8 is spirally coiled along the axis of the water storage tank 101 and is located inside the water storage tank 101. During use, a refrigerant is introduced into the refrigeration pipe 8 to cool the water in the water storage tank 101, thereby effectively reducing the water temperature during grain washing. The low-temperature environment can not only reduce the loss of nutrients in the grain during the washing process, but also inhibit the growth of microorganisms. The spiral coiling of the refrigeration pipe 8 is used to increase the contact area between the refrigeration pipe 8 and the water, thereby improving the refrigeration efficiency and enabling the overall water temperature in the water storage tank 101 to drop quickly and evenly, avoiding water temperature stratification.

[0028] Furthermore, the refrigeration pipe 8 passes through the cleaning tank 1 and is connected to the cold storage circulation assembly 11, which is used to control the circulation of the refrigeration medium in the refrigeration pipe 8, thereby cooling the cleaning water in the water storage tank 101. The cold storage circulation assembly 11 is provided with a liquid inlet port 1101, which is used to connect to an external refrigeration medium supply source to replenish the refrigeration medium.

[0029] In use, the liquid inlet port 1101 is used to connect to an external refrigerant supply source so as to continuously supply refrigerant to the cold storage circulation assembly 11. The cold storage circulation assembly 11 has a circulation pump inside. After the circulation pump is started, it can drive the refrigerant to form a stable circulation loop between the refrigerant pipe 8 and the cold storage circulation assembly 11. During the circulation process, the refrigerant carries away the heat of the water in the water storage tank 101 and performs heat exchange, so that the temperature of the washing water gradually decreases, so as to facilitate the washing of grain.

[0030] Furthermore, the drum 7 is provided with a plurality of first connecting holes 701 and a plurality of second connecting holes 702. The plurality of first connecting holes 701 are equidistantly distributed along the axial direction of the drum 7 and are disposed between two adjacent scattering ridges 703. The plurality of second connecting holes 702 are disposed on the bottom wall of the drum 7. Both the plurality of first connecting holes 701 and the plurality of second connecting holes 702 can be used for water inlet and water outlet.

[0031] During the washing stage, the washing water in the water storage tank 101 can enter the drum 7 through the first connecting hole 701 and the second connecting hole 702. Due to the principle of communicating vessels, after the washing water enters the drum 7, its liquid level is level with the liquid level in the water storage tank 101, thus soaking the grain. During drainage, the washing water in the drum 7 will be discharged sequentially from a number of first connecting holes 701 on its side wall and a number of second connecting holes 702 on its bottom wall. During the dehydration stage, the water accumulated between the grains is thrown out by centrifugal force and discharged to the outside of the drum 7 through the first connecting hole 701 and the second connecting hole 702.

[0032] Furthermore, the scattering ridge 703 extends along the axial direction of the drum 7. The cross-section of the scattering ridge 703 is triangular, with one end face connected to the inner wall of the drum 7, and the other two end faces located inside the drum 7 and filled with protrusions. The protrusions disrupt the propagation of ultrasonic waves, promoting the generation and collapse of vacuum bubble nuclei in a wider space. The shock waves and micro-jet generated when the vacuum bubble nuclei collapse can more effectively impact the gaps and depressions on the grain surface, peeling impurities off the grain. This helps to enhance the role of ultrasonic waves in the cleaning process, allowing the dirt and impurities attached to the grain to be more fully impacted and removed by ultrasonic waves, improving cleaning efficiency and quality. At the same time, the ridge structure of the scattering ridge 703 can also increase the structural strength of the drum 7, ensuring that the drum 7 is more stable in the rotating state, reducing the risk of deformation and damage, and extending the service life of the equipment.

[0033] Furthermore, a lid 9 is connected to the top side of the cleaning tank 1. A positioning ring 10 is provided on the side of the lid 9 facing the water storage tank 101. The positioning ring 10 is engaged with the water storage tank 101 and the roller 7 to keep the water storage tank 101 and the roller 7 coaxial during the cleaning and dehydration stages. Support columns 4 are also provided at the four corners of the bottom of the cleaning tank 1 to support the cleaning tank 1.

[0034] During use, the support column 4 provides stable support for the cleaning tank 1, ensuring that the equipment remains stable and reduces shaking during operation. The positioning ring 10 is used to fill the space between the inner wall of the water storage tank 101 and the outer wall of the roller 7 when the tank cover 9 is closed, so that the roller 7 always remains coaxial with the water storage tank 101. This avoids transmission failure or component damage caused by the torsional action of the transmission mechanism between the drive motor 13 and the roller 7 due to the offset of the roller 7 axis. At the same time, it prevents the cleaning water from splashing out during the rotation of the roller 7 and maintains a stable water level in the water storage tank 101.

[0035] Furthermore, a plurality of guide wheels 1001 are equidistantly arranged on one end face of the positioning ring 10 opposite to the cover 9. The cover 9 is provided with an annular limiting groove 901. The guide wheels 1001 are slidably connected to the limiting groove 901, so that the positioning ring 10 and the cover 9 are rotatably connected. Thus, when the drum 7 rotates, the positioning ring 10 is rotated along with it due to friction. This can effectively reduce the relative friction between the positioning ring 10 and the outer wall of the drum 7, reduce wear, extend the service life of the positioning ring 10, and ensure that the positioning ring 10 always forms a snap-fit ​​structure with the outer wall of the drum 7. This maintains the coaxial state of the drum 7 and the water storage tank 101 during the washing and dehydration stages, ensuring the stability and reliability of the equipment operation.

[0036] Working principle: Before cleaning, the water inlet valve 201 on the water inlet pipe 2 is activated by the control terminal 3 to inject an appropriate amount of cleaning water into the water storage tank 101. After the water is injected, the tank cover 9 is closed. The refrigeration pipe 8 starts to work under the drive of the cold storage circulation component 11. The refrigeration medium circulates in the refrigeration pipe 8, absorbing the heat of the cleaning water in the water storage tank 101, so that its temperature drops rapidly to the set value, thereby forming a low-temperature cleaning environment that is conducive to protecting the nutrients of the grain. At this time, grain is added to the drum 7 and the drive motor 13 is started, so that the drive motor 13 drives the drum 7 to rotate. The grain moves randomly in the drum 7 through centrifugal force, and the ultrasonic transducer 12 located at the bottom of the water storage tank 101 is activated to generate high-frequency sound waves, which are propagated with the help of low-temperature cleaning water. The high-frequency sound waves enter the interior of the drum 7 through water conduction and come into full contact with the grain placed in the drum 7. During the propagation process, the ultrasonic waves can penetrate into the folds and tiny cracks of the grain, which are difficult to reach by traditional cleaning methods, through the "cavitation effect", so as to achieve thorough cleaning of the grain.

[0037] After cleaning is completed, the control terminal 3 starts the drainage component. Driven by the drainage pump 6, the sewage flows out through the second drainage pipe 704 to the filter box 5 for filtration. The filter screen 502 blocks solid impurities in the sewage, and the filtered sewage is discharged out through the first drainage pipe 501.

[0038] After draining, the drive motor 13 is restarted to make the drum 7 rotate at high speed to dehydrate the grain. Under the action of centrifugal force, the water between the grains is thrown out and discharged to the outside of the drum 7 through the first connecting hole 701 and the second connecting hole 702. After dehydration is completed, the grain in the drum 7 can be taken out.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low-temperature ultrasonic-assisted grain washing and dehydration integrated machine, comprising a washing tank (1), wherein the washing tank (1) is provided with a water storage tank (101) with an open top, characterized in that: A cooling pipe (8) is fixedly installed on the side wall of the water storage tank (101). Several ultrasonic transducers (12) are installed at the bottom of the water storage tank (101). A water inlet pipe (2) is provided outside the cleaning tank (1). A roller (7) is coaxially installed in the water storage tank (101). A drive motor (13) is provided at the bottom of the cleaning tank (1). The output end of the drive motor (13) is connected to the roller (7). The roller (7) is connected to the water storage tank (101). Several scattering ridges (703) are provided at equal intervals on the inner wall of the roller (7). A control terminal (3) is also installed outside the cleaning tank (1).

2. The low-temperature ultrasonic-assisted grain washing and dehydration integrated machine according to claim 1, characterized in that, The water inlet pipe (2) is located on the upper side wall of the cleaning tank (1), and one end of it passes through the side wall of the cleaning tank (1) and is connected to the water storage tank (101). The water inlet pipe (2) is equipped with a water inlet valve (201), and the water inlet valve (201) is electrically connected to the control terminal (3).

3. The low-temperature ultrasonic-assisted grain washing and dehydration integrated machine according to claim 1, characterized in that, A second drain pipe (704) is fixedly installed on the side of the cleaning tank (1) near the bottom. One end of the second drain pipe (704) is connected to the bottom wall of the water storage tank (101), and the other end passes through the side wall of the cleaning tank (1) and is connected to a drain pump (6). The drain pump (6) is electrically connected to the control terminal (3), and the outlet of the drain pump (6) is connected to a filter box (5).

4. The low-temperature ultrasonic-assisted grain washing and dehydration integrated machine according to claim 3, characterized in that, The filter box (5) is equipped with a filter screen (502) at the top inside, and a first drain pipe (501) with one end connected to the filter box (5) is provided at the bottom of the side wall of the filter box (5).

5. The low-temperature ultrasonic-assisted grain washing and dehydration integrated machine according to claim 1, characterized in that, The refrigeration pipe (8) is spirally coiled along the axis of the water storage tank (101) and is located inside the water storage tank (101).

6. The low-temperature ultrasonic-assisted grain washing and dehydration integrated machine according to claim 1, characterized in that, The refrigeration pipe (8) passes through the cleaning tank (1) and is connected to the cold storage circulation assembly (11), which is provided with a liquid inlet port (1101).

7. The low-temperature ultrasonic-assisted grain washing and dehydration integrated machine according to claim 1, characterized in that, The roller (7) is provided with a plurality of first connecting holes (701) and a plurality of second connecting holes (702). The plurality of first connecting holes (701) are equidistantly distributed along the axial direction of the roller (7) and are located between two adjacent scattering ridges (703). The plurality of second connecting holes (702) are located on the bottom wall of the roller (7).

8. A low-temperature ultrasonic-assisted grain washing and dehydration integrated machine according to claim 7, characterized in that, The scattering ridge (703) extends along the axial direction of the roller (7). The cross-section of the scattering ridge (703) is triangular, with one end face connected to the inner wall of the roller (7), and the other two end faces located inside the roller (7) and filled with protrusions.

9. A low-temperature ultrasonic-assisted grain washing and dehydration integrated machine according to claim 1, characterized in that, The top side of the cleaning tank (1) is covered with a lid (9). A positioning ring (10) is provided on the side of the lid (9) facing the water tank (101). The positioning ring (10) is engaged with the water tank (101) and the roller (7). Support columns (4) are also provided at the four corners of the bottom of the cleaning tank (1).

10. A low-temperature ultrasonic-assisted grain washing and dehydration integrated machine according to claim 9, characterized in that, The positioning ring (10) has several guide wheels (1001) equidistantly arranged on one side end face of the box cover (9). The box cover (9) has an annular limiting groove (901), and the guide wheels (1001) are slidably connected to the limiting groove (901).

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