Rapid tissue dehydration device and method based on ultrasonic helical wave recovery enhancement

Abstract

The invention relates to the technical field of food processing equipment and food processing, in particular to a rapid tissue dehydration device and method based on ultrasonic spiral wave recovery enhancement, the rapid tissue dehydration device comprises a frame and a dehydration tank body arranged on the frame, one side of the frame is provided with an opening and closing door, the opening and closing door is provided with an observation window, and the frame is arranged on supporting legs; a water outlet is formed in the bottom of the dewatering tank body, and a flow guide groove is formed in the side wall of the dewatering tank body and used for guiding dewatering liquid to the water outlet; a guide rod is arranged in the dehydration tank body, and the guide rod penetrates through a through hole in the pressing plate to guide the pressing plate so as to apply downward pressing constraint to food in the dehydration tank body; a communicating pipe is arranged at the top of the frame, the communicating pipe is communicated with a cleaning ball head through a connecting pipe, and the cleaning ball head is arranged at the upper part in the dehydration tank body; a spiral wave sound field is formed through phase difference driving of the multiple ultrasonic transducers, a recovery enhancement control strategy is adopted, migration and discharge of liquid in tissue are promoted, and the dehydration efficiency and uniformity are improved.

Description

Technical Field

[0001] This invention relates to the field of food processing equipment and food handling technology, specifically to a rapid tissue dehydration device and method based on ultrasonic spiral wave recovery enhancement. Background Technology

[0002] In food processing and pretreatment, it is often necessary to dehydrate food tissues to reduce moisture content, improve tissue stability, facilitate subsequent processing, or extend shelf life. Common food dehydration methods include natural drainage, mechanical extrusion, centrifugal dehydration, hot air drying, and vacuum dehydration.

[0003] Existing natural drainage and mechanical extrusion methods are simple in structure, but have low dehydration efficiency, long processing times, and difficulty in precisely controlling the pressure applied to the food tissue during extrusion, easily causing food tissue damage, deformation, or quality degradation. While centrifugal dehydration can improve dehydration efficiency to some extent, the equipment is prone to vibration during operation, has poor adaptability to different food shapes, and consumes a lot of energy. Hot air drying and vacuum dehydration typically require long processing times, easily causing excessive drying of the food surface or uneven internal moisture migration, and may also affect the flavor and nutritional components of the food.

[0004] In recent years, ultrasonic processing technology has been increasingly applied in the food processing field. When ultrasound propagates in a medium, it generates cavitation and micro-vibration effects, thereby promoting the migration of liquids within food tissues. However, existing ultrasonic dehydration equipment often uses single or simply arranged ultrasonic transducers, resulting in uneven sound field distribution and a tendency for localized effects to be either too strong or too weak. Furthermore, during actual dehydration, food tissues are prone to floating, tumbling, or displacement under ultrasonic action, leading to unstable dehydration results.

[0005] On the other hand, if the liquid discharged during the dehydration process cannot be discharged in time, it is easy to form liquid accumulation inside the equipment, resulting in liquid backflow and affecting the uniformity of dehydration. Some existing dehydration equipment does not adequately consider the design of liquid guiding and discharge structures, making it difficult to effectively guide liquid flow. In addition, food processing equipment usually needs to meet high hygiene requirements. Existing dehydration equipment generally suffers from problems such as many cleaning dead spots, inconvenient disassembly and assembly, and difficulty in achieving online cleaning, which increases maintenance costs and may bring the risk of cross-contamination. Therefore, this application provides a rapid tissue dehydration device and method based on ultrasonic spiral wave recovery enhancement that can stably constrain food tissue, promote rapid liquid discharge, and facilitate cleaning and maintenance, in order to overcome the above-mentioned problems of the prior art. Summary of the Invention

[0006] The purpose of this invention is to provide a rapid tissue dehydration device and method based on ultrasonic spiral wave recovery enhancement, so as to solve the problems mentioned in the background art.

[0007] The technical solution adopted by this application to solve its technical problem is: a rapid tissue dehydration device and method based on ultrasonic spiral wave recovery enhancement, including: a frame and a dehydration tank set on the frame, a switch door is provided on one side of the frame, an observation window is provided on the switch door, and the frame is set on a support leg.

[0008] The dehydration tank is provided with a drain outlet at the bottom and a guide groove on the side wall of the dehydration tank, which is used to guide the dehydrated liquid to the drain outlet; a guide rod is provided inside the dehydration tank, which passes through a through hole in the pressure plate to guide the pressure plate, so that the pressure plate can move up and down along the guide rod to apply downward pressure constraint to the food inside the dehydration tank.

[0009] The top of the frame is provided with a connecting pipe, which is connected to a cleaning ball head via a connecting pipe. The cleaning ball head is located inside the upper part of the dehydration tank and is used to clean the dehydration tank online.

[0010] Preferably, the pressure plate is a mesh plate or perforated plate structure to allow the dehydrating liquid to flow downward through the pressure plate.

[0011] Preferably, the side wall of the dehydration tank is provided with multiple flow holes, which are used to connect the liquid flow channels inside and outside the dehydration tank; the dehydration tank is connected to the frame or the upper cover of the tank by clamps to achieve detachable assembly and sealing fixation.

[0012] Preferably, the guide channel extends in a spiral direction along the outer or inner wall of the dehydration tank and is inclined downward.

[0013] Preferably, the pressure plate is connected to the frame via a pressing assembly, which includes a fixed plate, a deflection plate, a contact rod, and a pressure spring. The pressure spring provides a downward preload to the pressure plate. The deflection plate is hinged or rotatably connected to the fixed plate, and the contact rod cooperates with the deflection plate to change the action state on the pressure plate when the deflection plate deflects, thereby achieving the pressing or releasing of the pressure plate. The pressing assembly also includes a bending plate with mounting holes and is detachably connected to the frame via a fixing pin.

[0014] Preferably, an operating table is provided on one side of the frame, which is used to place control components, pipeline interfaces or operating tools; the cleaning ball head is a rotating spray ball head or a fixed spray ball head, the connecting pipe serves as a cleaning medium input pipeline, and the drain outlet is used to discharge the cleaning medium.

[0015] Preferably, a plurality of ultrasonic transducers are provided on the inner wall of the frame, and a control module is provided in the operating table. The control module is used to control the working status of the plurality of ultrasonic transducers. The plurality of ultrasonic transducers are arranged at intervals along the circumference of the dehydration tank. There is a preset phase difference between the drive signals of two adjacent ultrasonic transducers so that the ultrasonic waves form a rotating helical wave sound field in the cavity. The control module includes a phase control unit and a power adjustment unit, which are used to adjust the phase difference and the ultrasonic output power respectively.

[0016] A rapid tissue dehydration method based on ultrasonic helical wave recovery enhancement, using any one of the aforementioned rapid tissue dehydration devices based on ultrasonic helical wave recovery enhancement, includes the following steps:

[0017] S1. Open the switch door, place the tissue to be dehydrated into the dehydration tank, and assemble the dehydration tank with the frame.

[0018] S2. Move the pressure plate along the guide rod so that the pressure plate is pressed down through the through hole and under the guidance of the guide rod until it contacts the tissue, thereby applying downward constraint to the tissue;

[0019] S3. Start the ultrasonic transducer and apply a drive signal with a phase difference to multiple ultrasonic transducers by the control module to form an ultrasonic spiral wave sound field in the dehydration tank.

[0020] S4. During the action of the ultrasonic spiral wave, the control module performs recovery enhancement control: switching the phase difference or output power within a preset period, so that the spiral wave sound field alternates between the first state and the second state, thereby enhancing the driving effect of the fluid inside the tissue being discharged outward.

[0021] S5. The fluid discharged from the tissue flows out through the flow hole and is guided along the guide groove to the drain outlet for discharge;

[0022] S6. After dehydration is complete, open the connecting pipe to supply cleaning medium to the cleaning ball head, spray and clean the dehydration tank and pressure plate, and discharge the cleaning medium through the drain outlet.

[0023] Preferably, the recovery enhancement control in step S4 includes: switching the phase difference between adjacent ultrasonic transducers between a first phase difference and a second phase difference within the preset period, so that the direction of rotation of the helical wave sound field is switched or the rotation intensity changes; the recovery enhancement control in step S4 also includes: switching the ultrasonic output power between a first power and a second power within the preset period, or switching the duty cycle of the driving signal between a first duty cycle and a second duty cycle.

[0024] Preferably, in step S3, the plurality of ultrasonic transducers are disposed on the outer circumference or bottom of the dehydration tank, and the phase difference is the phase difference between adjacent transducers.

[0025] The beneficial effects of this application are:

[0026] The rapid tissue dehydration device and method based on ultrasonic spiral wave recovery enhancement provided in this application form a spiral wave sound field by driving multiple ultrasonic transducers by phase difference, and adopts a recovery enhancement control strategy to make the sound field state switch periodically, promote the migration and discharge of fluid in the tissue, and improve the dehydration efficiency and uniformity.

[0027] The rapid tissue dehydration device and method based on ultrasonic spiral wave recovery enhancement provided in this application use a pressure plate that moves up and down under the guidance of a guide rod to apply downward constraint to the food tissue, thereby suppressing floating and displacement and ensuring processing stability.

[0028] The rapid tissue dehydration device and method based on ultrasonic spiral wave recovery enhancement provided in this application guides the dehydrated liquid to the drain outlet through a spiral guide channel, reducing liquid accumulation and backflow; online spray cleaning is achieved through a cleaning ball head, and the cleaning medium is discharged through the drain outlet, improving the hygiene and maintenance convenience of food equipment; the dehydration tank body is detachable and sealed by clamps, which facilitates disassembly and maintenance and reduces liquid splashing.

[0029] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. These will be further described in detail below with reference to figures. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0032] Figure 3 This is a schematic diagram of the pressing component of the present invention;

[0033] Figure 4 This is a schematic diagram of the cleaning ball head structure of the present invention;

[0034] Figure 5 This is a schematic diagram of the side structure of the dehydration tank of the present invention;

[0035] Figure 6 This is a schematic diagram of the movement of the pressure plate according to the present invention.

[0036] Drawing number explanation:

[0037] 1. Support leg; 2. Frame; 3. Opening / closing door; 4. Observation window; 5. Operating table; 6. Drain outlet; 7. Guide rod; 8. Dehydration tank; 9. Flow hole; 10. Pressure plate; 11. Through hole; 12. Fixing pin; 13. Mounting hole; 14. Bending plate; 15. Fixing plate; 16. Deflection plate; 17. Contact rod; 18. Pressure spring; 19. Connecting pipe; 20. Connecting pipe; 21. Cleaning ball head; 22. Clamp; 23. Flow guide groove; 24. Ultrasonic transducer. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0040] Please refer to Figures 1 to 6 A rapid tissue dehydration device based on ultrasonic spiral wave recovery enhancement includes: a frame 2, which is mounted on a support leg 1; a door 3 is provided on one side of the frame 2, and an observation window 4 is provided on the door 3 to observe the situation inside the dehydration tank 8 during the dehydration process; and an operating table 5 is provided on one side of the frame 2 for installing control modules, connecting pipelines, and placing operating tools.

[0041] The dehydration tank 8 is installed inside the frame 2; the bottom of the dehydration tank 8 is provided with a drain port 6 for discharging the dehydration liquid and cleaning medium; the side wall of the dehydration tank 8 is provided with multiple flow holes 9, which are used to connect the liquid flow channels inside and outside the tank; the dehydration tank 8 is connected to the frame 2 or the tank cover by clamps 22 to achieve detachable assembly and sealing fixation, which is convenient for maintenance and cleaning.

[0042] like Figure 5 As shown, a guide channel 23 is provided on the side wall of the dehydration tank 8. The guide channel 23 is preferably extended in a spiral direction and inclined downward, so that the dehydration liquid flows along the guide channel 23 under the action of gravity and collects to the drain outlet 6, thereby reducing the accumulation of liquid in the tank and reducing the risk of backflow.

[0043] like Figure 2 , Figure 6As shown, a guide rod 7 is provided inside the dehydration tank 8. The guide rod 7 passes through the through hole 11 on the pressure plate 10 to guide the pressure plate 10, so that the pressure plate 10 can move up and down along the guide rod 7. The pressure plate 10 is preferably a mesh plate or perforated plate structure, which can both form a downward pressing constraint on the food tissue and allow the dehydration liquid to flow downward through the pressure plate 10.

[0044] like Figure 3 As shown, the pressure plate 10 is connected to the frame 2 via a pressing assembly. The pressing assembly includes a fixed plate 15, a deflection plate 16, a contact rod 17, and a pressure spring 18. The fixed plate 15 is used for installation and support. The deflection plate 16 is hinged or rotatably connected to the fixed plate 15. The contact rod 17 cooperates with the deflection plate 16. When the deflection plate 16 deflects, it changes the state of action on the pressure plate 10, thereby achieving the pressing or releasing of the pressure plate 10. The pressure spring 18 is used to provide a downward preload to the pressure plate 10, so that the pressure plate 10 remains stably pressed. The pressing assembly also includes a bending plate 14. The bending plate 14 is provided with a mounting hole 13. The bending plate 14 is detachably connected to the frame 2 via a fixing pin 12, which facilitates assembly or replacement.

[0045] like Figure 4 As shown, a connecting pipe 19 is provided at the top of the frame 2. The connecting pipe 19 is connected to the cleaning ball head 21 via a connecting pipe 20. The cleaning ball head 21 is located inside the upper part of the dehydration tank 8. The cleaning ball head 21 can be a rotating spray ball head or a fixed spray ball head. It is used to spray cleaning medium onto the inner wall of the tank, the pressure plate 10 and the area where the guide channel 23 is located to achieve online cleaning. The cleaning medium is discharged through the drain outlet 6.

[0046] In addition, such as Figure 1 , Figure 2 As shown, multiple ultrasonic transducers 24 are arranged on the inner wall of the frame 2, and the multiple ultrasonic transducers 24 are arranged at intervals along the circumference of the dehydration tank 8; a control module is set in the operating table 5, which includes a phase control unit and a power adjustment unit, used to apply a driving signal with a phase difference to the multiple ultrasonic transducers 24 and adjust the output power, thereby forming a rotating helical wave sound field in the dehydration tank 8.

[0047] The method for dehydration using the above-mentioned apparatus includes the following steps:

[0048] S1. Open the switch door 3, place the tissue to be dehydrated into the dehydration tank 8, and assemble the dehydration tank 8 with the frame 2.

[0049] S2. Move the pressure plate 10 along the guide rod 7, so that the pressure plate 10 is pressed down to contact the tissue under the guidance of the guide rod 7, and apply downward constraint to the tissue;

[0050] S3. Start multiple ultrasonic transducers 24. The control module applies a drive signal with a preset phase difference to the adjacent transducers to form an ultrasonic spiral wave sound field inside the dehydration tank 8.

[0051] S4. During the action of the spiral wave sound field, the control module performs recovery enhancement control: switching the phase difference or output power within a preset period, so that the spiral wave sound field alternates between the first state and the second state, thereby enhancing the drive for the fluid inside the tissue to migrate and be discharged outward.

[0052] S5. The fluid discharged from the tissue flows out through the flow hole 9 and is guided along the guide groove 23 to the drain outlet 6 for discharge;

[0053] S6. After dehydration is completed, open the connecting pipe 19 to supply cleaning medium to the cleaning ball head 21, spray and clean the dehydration tank 8 and pressure plate 10, and discharge the cleaning medium through the drain port 6.

[0054] In a preferred embodiment, the recovery enhancement control includes: switching the phase difference between adjacent ultrasonic transducers 24 between a first phase difference and a second phase difference, causing a switch in the direction of rotation of the helical wave acoustic field or a change in the rotation intensity; or switching the ultrasonic output power between a first power and a second power; or switching the duty cycle of the drive signal between a first duty cycle and a second duty cycle. Through the above control, an alternating acoustic field state can be formed within one processing cycle, thereby further promoting liquid discharge.

[0055] Through all the above embodiments, the working principle of the present invention is as follows: During operation, the food tissue to be dehydrated is placed in the dehydration tank 8; guided by the guide rod 7, the pressure plate 10 moves downward along the guide rod 7 and applies a stable downward pressing constraint to the food tissue under the action of the pressing component; the pressure plate 10 adopts a mesh plate or perforated plate structure, so that while the food tissue is constrained, the dehydration liquid can smoothly pass through the pressure plate 10 and flow downward, thereby avoiding the food from floating or displacing randomly under the action of ultrasound, and ensuring the stability and consistency of the dehydration process;

[0056] After the pressure plate 10 completes the pressing of the food tissue, the control module in the operating table 5 activates multiple ultrasonic transducers 24 set on the inner wall of the frame 2; the control module applies a drive signal with a preset phase difference to the adjacent ultrasonic transducers 24, so that the ultrasonic waves emitted by each ultrasonic transducer 24 are superimposed in the dehydration tank 8 to form an ultrasonic spiral wave sound field that rotates and propagates around the axis of the tank; this spiral wave sound field generates periodic micro-vibrations and pressure gradients inside the food tissue, thereby disrupting the binding state between the liquid and solid matrix in the food tissue and promoting the outward migration of liquid;

[0057] During the action of the ultrasonic spiral wave, the control module further performs recovery enhancement control; specifically, the control module switches the driving phase difference, output power or duty cycle of the driving signal of the ultrasonic transducer 24 within a preset time period, so that the spiral wave sound field alternates between the first state and the second state; through the above-mentioned alternating sound field state, an alternating sound pressure distribution and fluid response can be formed inside the food tissue, thereby enhancing the reciprocating motion of the liquid inside the tissue and the outward discharge driving force, and improving the dehydration efficiency and uniformity;

[0058] During the dehydration process, the liquid discharged from the food tissue flows out through the flow hole 9 on the side wall of the dehydration tank 8 and, under the action of gravity, flows downward along the spiral guide groove 23 set on the inner or outer wall of the dehydration tank 8, and finally is discharged through the drain outlet 6, thereby reducing the accumulation of liquid in the dehydration tank 8 and reducing the backflow phenomenon.

[0059] After the dehydration operation is completed, the cleaning medium is supplied to the cleaning ball head 21 through the connecting pipe 19. The cleaning ball head 21 sprays and cleans the inner wall of the dehydration tank 8, the pressure plate 10 and the area where the guide channel 23 is located. The cleaning medium is finally discharged through the drain outlet 6, realizing online cleaning and hygiene maintenance of the equipment and preparing it for the next dehydration operation.

[0060] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary. Under the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0061] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A rapid tissue dehydration device based on ultrasound helicon wave recovery enhancement, characterized in that, The utility model provides a dehydration device, including frame (2) and dehydration tank body (8) set up on frame (2), one side of frame (2) is equipped with switch door (3), and switch door (3) is equipped with observation window (4), and frame (2) sets up on support leg (1); The bottom of the dehydration tank body (8) is provided with a drain port (6), and the sidewall of the dehydration tank body (8) is provided with a flow guide groove (23), and the flow guide groove (23) is used to guide the dehydration liquid to the drain port (6); the dehydration tank body (8) is provided with a guide rod (7), the guide rod (7) passes through the through hole (11) on the pressing plate (10) to guide the pressing plate (10), so that the pressing plate (10) can move up and down along the guide rod (7) to apply downward pressure to the food in the dehydration tank body (8); The top of the frame (2) is provided with a communication pipe (19), the communication pipe (19) is communicated with a cleaning ball head (21) through a connecting pipe (20), and the cleaning ball head (21) is arranged above the inside of the dehydration tank body (8) and is used for online cleaning of the dehydration tank body (8).

2. The rapid tissue dehydration device based on ultrasound helicon wave recovery enhancement according to claim 1, characterized in that, The pressing plate (10) is a mesh plate or a perforated plate structure to allow the dehydration liquid to flow downward through the pressing plate (10).

3. The rapid tissue dehydrator based on the enhancement of the ultrasonic helicon wave recovery according to claim 1, characterized in that, The sidewall of the dehydration tank body (8) is provided with a plurality of flow-through holes (9) for communicating the liquid flow channels inside and outside the dehydration tank body (8); the dehydration tank body (8) is connected with the frame (2) or the upper cover of the tank body through a clamp (22) to realize detachable assembly and sealing fixation.

4. The rapid tissue dehydrator based on the enhancement of the ultrasonic helicon wave recovery according to claim 1, characterized in that, The flow guide groove (23) extends in a spiral direction along the outer wall or the inner wall of the dehydration tank body (8) and is arranged downwardly inclined.

5. The rapid tissue dehydrator based on the enhancement of the ultrasonic helicon wave recovery according to claim 1, characterized in that, The pressing plate (10) is connected with the frame (2) through a pressing assembly, the pressing assembly includes a fixed plate (15), a deflection plate (16), a contact rod (17) and a pressure spring (18), the pressure spring (18) is used to provide a downward pre-tightening force to the pressing plate (10); the deflection plate (16) is hinged or rotationally connected with the fixed plate (15), the contact rod (17) cooperates with the deflection plate (16) to change the action state of the pressing plate (10) when the deflection plate (16) deflects, so as to realize the pressing or releasing of the pressing plate (10); the pressing assembly further includes a bending plate (14), the bending plate (14) is provided with a mounting hole (13), and the bending plate (14) is detachably connected with the frame (2) through a fixed pin (12).

6. The apparatus for rapid tissue dehydration based on the enhancement of the ultrasonic helicon wave recovery according to claim 5, characterized in that, One side of the frame (2) is provided with an operation table (5), and the operation table (5) is used to place control components, pipeline interfaces or operation tools; the cleaning ball head (21) is a rotating spray ball head or a fixed spray ball head, the communication pipe (19) is used as a cleaning medium input pipeline, and the drain port (6) is used to discharge the cleaning medium.

7. The apparatus for fast tissue dehydrating based on the enhancement of ultrasonic helicon wave reply according to claim 6, characterized in that, The inner wall of the frame (2) is provided with a plurality of ultrasonic transducers (24), and the operating table (5) is internally provided with a control module for controlling the working state of the plurality of ultrasonic transducers (24); the plurality of ultrasonic transducers (24) are arranged along the circumference of the dehydration tank body (8) at intervals; the driving signals of two adjacent ultrasonic transducers (24) have a preset phase difference, so that the ultrasonic waves form a rotating propagation spiral wave sound field in the cavity; the control module includes a phase control unit and a power adjustment unit for adjusting the phase difference and the ultrasonic output power, respectively.

8. A method for rapid tissue dehydration based on ultrasound helicon wave recovery enhancement, characterized by, The use of the rapid tissue dehydration device based on ultrasonic spiral wave recovery enhancement according to any one of claims 1-7 comprises the following steps: S1, open the switch door (3), place the tissue to be dehydrated in the dehydration tank body (8), and make the dehydration tank body (8) and the frame (2) in an assembled state; S2, move the pressing plate (10) along the guide rod (7), so that the pressing plate (10) is pressed to contact the tissue through the through hole (11) under the guidance of the guide rod (7), thereby applying downward constraint to the tissue; S3, start the ultrasonic transducer and apply driving signals with a phase difference to the plurality of ultrasonic transducers by the control module to form an ultrasonic spiral wave sound field in the dehydration tank body (8); S4, during the action of the ultrasonic spiral wave, the control module performs recovery enhancement control: switching the phase difference or the output power within a preset period, so that the spiral wave sound field alternates between the first state and the second state, to enhance the driving effect of the liquid in the tissue to the outside; S5, the liquid discharged by the tissue flows out through the flow-through hole (9) and is guided to the drain (6) along the flow guide groove (23); S6, after dehydration, open the communication pipe (19) to supply cleaning medium to the cleaning ball head (21), spray and clean the dehydration tank body (8) and the pressing plate (10), and discharge the cleaning medium from the drain (6).

9. The method of claim 8, wherein the method is based on the enhancement of the recovery of ultrasonic helicon waves. The recovery enhancement control in step S4 includes switching the phase difference between the first phase difference and the second phase difference between adjacent ultrasonic transducers within the preset period, so that the rotation direction of the spiral wave sound field changes or the rotation intensity changes; the recovery enhancement control in step S4 also includes switching the ultrasonic output power between the first power and the second power within the preset period, or switching the duty cycle of the driving signal between the first duty cycle and the second duty cycle.

10. The method of claim 9, wherein the method is based on the enhancement of the recovery of the ultrasonic helicon wave. In step S3, the plurality of ultrasonic transducers are arranged on the outer side or the bottom of the dehydration tank body (8), and the phase difference is the phase difference between adjacent transducers.

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