A rotating disc contactor and extraction method for reducing solid phase deposition

Abstract

The application belongs to the technical field of extraction equipment, and discloses a rotary disc type extraction tower capable of reducing solid phase deposition, which comprises a tower body and further comprises a fixed disc module composed of a plurality of fixed disc assemblies connected vertically, a group of connecting rods fixedly connected to the top of the fixed disc module, and a cylindrical cam assembly rotatably connected to the top of the tower body and capable of reciprocating the connecting rods in the vertical direction. The above scheme drives the annular member to rotate by rotating the gear transmission assembly through the operation of the motor, at this time, the guide slope forces the top end of the connecting rod to go up along the surface of the guide slope, at this time, the rotation of the rotary disc body makes the solution at the same height rotate at a high speed, the gap between the rotary disc body and the corresponding fixed disc assembly below the rotary disc body is reduced, the flow rate of the fluid passing through the gap is significantly increased, and strong shear flow and turbulent disturbance are formed between the disc surfaces, so that the solid particles cannot stay and adhere to the upper surface of the fixed disc assembly, thereby effectively inhibiting the formation of solid phase deposition.

Description

Technical Field

[0001] This invention belongs to the field of extraction equipment technology, specifically a rotary disc extraction tower and extraction method for reducing solid phase deposition. Background Technology

[0002] Rotary disc extraction towers are liquid-liquid extraction devices widely used in chemical, pharmaceutical, and hydrometallurgical industries. Their basic structure includes a vertically arranged tower body, a rotating disc and a fixed disc installed inside the tower body. During operation, the two-phase liquids enter from both ends of the tower body and flow countercurrently under the action of gravity. The rotating disc applies shear force to the fluid, causing the dispersed phase to form fine droplets to increase the contact area. The fixed disc plays a role in suppressing axial backmixing and promoting phase separation, thereby realizing multi-stage countercurrent extraction.

[0003] In actual industrial operation, when the extraction system contains trace amounts of solid impurities or reaction byproducts, the solid particles will enter the interior of the tower with the liquid flow and gradually settle and accumulate in low-flow-rate areas such as the upper surface of the fixed plate and the walls of the inter-plate flow channels. As the operating time increases, the deposition layer will continue to thicken, which will reduce the cross-section of the flow channel, change the flow field distribution inside the tower, and lead to uneven distribution of the two-phase liquid and decreased mass transfer efficiency. In severe cases, it may even completely block the inter-plate channels, forcing the tower to be shut down for cleaning, resulting in production capacity loss and increased operating costs.

[0004] Common existing treatment methods mainly include using mechanical scrapers inside the tower to physically clean the disc surface, and periodically stopping the tower for chemical cleaning or high-pressure water rinsing. Mechanical scrapers have complex structures, are difficult to seal, and can interfere with the flow field inside the tower, affecting extraction efficiency. On the other hand, stopping the tower for cleaning can seriously affect production continuity and capacity utilization. All of the above methods have their own limitations and fail to fundamentally solve the problem of continuous solid phase accumulation during the operation of rotary extraction towers. Therefore, based on the above problems, a rotary extraction tower and extraction method for reducing solid phase deposition are proposed. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a rotary disc extraction tower and extraction method that reduces solid phase deposition, solving the problem of continuous deposition of solid particles on the upper surface of the fixed disc and in the flow channel area between the discs during long-term operation of the rotary disc extraction tower, which leads to flow channel blockage and decreased extraction efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rotary disc extraction tower for reducing solid phase deposition, comprising a tower body, a light liquid inlet, a heavy liquid inlet, a light liquid outlet, and a heavy liquid outlet, wherein a rotary disc assembly and a fixed disc assembly are installed on the tower body, and further comprising: a fixed disc module composed of a plurality of the fixed disc assemblies vertically connected together, wherein a set of connecting rods is fixedly connected to the top of the fixed disc module, and a columnar cam assembly that enables the connecting rods to reciprocate in the vertical direction is rotatably connected to the top of the tower body; The turntable assembly includes a support plate fixedly installed on the top of the tower body, a motor fixedly installed on the support plate, the output end of the motor penetrating downward through the support plate and the tower body and extending to the bottom of the tower body, and several turntable bodies respectively located between adjacent fixed disc assemblies are fixedly connected at equal intervals on the output shaft of the motor. The columnar cam assembly includes an annular component rotatably connected to the top of the tower body and driven by the motor output shaft. The annular component has guide ramps and guide grooves. The two sets of guide ramps are respectively connected to different ends of the two sets of guide grooves. The top end of the connecting rod extends upward to the outside of the tower body and can slide along the guide ramps and guide grooves.

[0007] Preferably, a grid plate is fixedly installed on the top of the tower cavity, with its height located below the heavy liquid inlet, and the connecting rod is movably sleeved on the grid plate.

[0008] Preferably, a gear transmission assembly for transmitting power from the motor output shaft to the ring-shaped component is installed at the top of the tower body.

[0009] Preferably, the gear transmission assembly includes a sun gear fixedly sleeved on the motor output shaft and located at the top of the tower body. The top of the tower body is rotatably connected in a circular array to a plurality of planet gears that mesh with the sun gear. The top of the tower body is rotatably connected to a gear ring located on the outer periphery of the plurality of planet gears and capable of meshing with the planet gears. The outer periphery of the gear ring is fixedly connected to the inner wall of the annular component.

[0010] Preferably, the fixed disk assembly includes a disk body, the disk body having a plurality of arc-shaped holes in an annular direction, a rubber sheet being installed at the bottom of the arc-shaped holes, the outer arc-shaped portion of the rubber sheet being fixedly connected to the disk body, and the upper surface edge of the rubber sheet abutting against a flange opened in the arc-shaped holes.

[0011] Preferably, the fixed disk assembly further includes columns; except for the topmost disk, the tops of the remaining disks are fixedly connected to several columns in a circular array, and the tops of the columns are fixedly connected to a group of disks above.

[0012] Preferably, a plurality of sector-shaped columns are fixedly installed on the top of the disk, and a guide plate located above the arc-shaped hole is fixedly connected between two adjacent sector-shaped columns, the guide plate being inclined toward the center of the disk.

[0013] Preferably, the bottom of the tower body is fixedly connected with several fixed rods in a circular array, the top of the fixed rods extends upward through several discs and fan-shaped columns, and several pistons are fixedly installed vertically on the fixed rods, and the pistons are initially located at the top of several groups of fan-shaped columns in the vertical direction. The sector-shaped column has a through hole located below the piston.

[0014] Preferably, the vertical distance between the bottom of the piston and the through hole is greater than the vertical height difference between the top and bottom of the guide slope.

[0015] An extraction method using a rotating disc extraction column to reduce solid phase deposition, comprising the following steps: When the motor is running, the gear transmission assembly drives the ring component to rotate. At this time, the guide ramp forces the top of the connecting rod to move upward along the guide ramp surface, and the fixed disk module also moves upward. When the top of the connecting rod slides into the guide groove, the gap between the turntable body and the corresponding fixed disk assembly located below it decreases. At this time, the rotation of the turntable body causes the solution at the same height to rotate at high speed. Due to the reduction of the gap between the turntable body and the corresponding fixed disk assembly below it, the flow velocity of the fluid passing through the gap increases significantly, and strong shear flow and turbulent disturbance are formed between the disk surfaces, making it impossible for solid particles to stay and adhere on the upper surface of the fixed disk assembly, thereby effectively inhibiting the formation of solid phase deposition.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The above scheme uses a motor to drive the gear transmission assembly to rotate the ring component. At this time, the guide slope forces the top of the connecting rod to move upward along the guide slope surface, and the fixed disk module also moves upward. When the top of the connecting rod slides into the guide groove, the distance between the turntable body and the corresponding fixed disk assembly located below it decreases. At this time, the rotation of the turntable body will cause the solution at the same height to rotate at high speed. Due to the reduction of the gap between the turntable body and the corresponding fixed disk assembly below it, the flow velocity of the fluid passing through the gap increases significantly, and strong shear flow and turbulent disturbance are formed between the disk surfaces, so that solid particles cannot stay and adhere on the upper surface of the fixed disk assembly, thereby effectively inhibiting the formation of solid phase deposition. The above scheme allows the solution above the disk to flow through the rubber sheet to the area below it as the disk moves upward. This solution impacts the upper surface of the lower set of disks and, as the disks move vertically back and forth, creates a periodic hydraulic scouring effect, which destroys the thin deposit layer that may be attached to the upper surface of the disks, preventing it from continuously thickening.

[0017] The above scheme drives the sector column upward simultaneously as the disk body moves upward. The piston remains stationary due to the fixing rod. At this time, the solution in the sector column will be discharged to the upper surface of the disk body through the through hole and diffuse radially inward along the disk surface, forming a covering flushing liquid film on the disk surface. This flushing liquid film continues to flow towards the inner edge of the disk body, carrying any small particles that may remain on the disk surface to the inner edge of the disk body and throwing them into the main liquid flow area in the tower, preventing particles from accumulating on the disk surface and forming local deposits. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a frontal perspective view of the present invention; Figure 3 This is a schematic diagram of the top structure of the tower body of the present invention; Figure 4 This is a schematic diagram of the structure of the turntable assembly of the present invention; Figure 5 This is a schematic diagram of the columnar wheel assembly of the present invention; Figure 6 This is a front cross-sectional view of the present invention; Figure 7 This is a front cross-sectional view of the disc body of the present invention; Figure 8 for Figure 7 Enlarged view of point A in the middle; Figure 9 for Figure 7 Enlarged view of point B in the middle.

[0019] In the diagram: 1. Tower body; 11. Light liquid inlet; 12. Heavy liquid inlet; 13. Light liquid outlet; 14. Heavy liquid outlet; 15. Grating plate; 2. Turntable assembly; 21. Motor; 22. Support plate; 23. Turntable body; 3. Fixed disc assembly; 31. Disc body; 311. Sector column; 312. Through hole; 313. Guide plate; 32. Arc hole; 33. Rubber sheet; 34. Column; 4. Columnar cam assembly; 41. Ring component; 42. Guide slope; 43. Guide groove; 5. Gear transmission assembly; 51. Sun gear; 52. Planetary gear; 53. Gear ring; 6. Connecting rod; 7. Fixed rod; 71. Piston. 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1 to 9 As shown, the present invention provides a rotary disc extraction tower for reducing solid phase deposition, including a tower body 1, a light liquid inlet 11, a heavy liquid inlet 12, a light liquid outlet 13 and a heavy liquid outlet 14. A rotary disc assembly 2 and a fixed disc assembly 3 are installed on the tower body 1. The tower body 1 also includes a fixed disc module composed of several fixed disc assemblies 3 connected vertically. A set of connecting rods 6 are fixedly connected to the top of the fixed disc module. A columnar cam assembly 4 that enables the connecting rods 6 to reciprocate in the vertical direction is rotatably connected to the top of the tower body 1. The turntable assembly 2 includes a support plate 22 fixedly installed on the top of the tower body 1. A motor 21 is fixedly installed on the support plate 22. The output end of the motor 21 passes through the support plate 22 and the tower body 1 and extends to the bottom of the tower body 1. Several turntable bodies 23 located between adjacent fixed plate assemblies 3 are fixedly connected at equal intervals on the output shaft of the motor 21. The columnar cam assembly 4 includes an annular part 41 rotatably connected to the top of the tower body 1 and driven by the output shaft of the motor 21. The annular part 41 is provided with a guide slope 42 and a guide groove 43. The two sets of guide slopes 42 are respectively connected to different ends of the two sets of guide grooves 43. The top end of the connecting rod 6 extends upward to the outside of the tower body 1 and can slide along the guide slope 42 and the guide groove 43. A grid plate 15 is fixedly installed on the top of the tower body 1 cavity, with its height located below the heavy liquid inlet 12, and a connecting rod 6 is movably sleeved on the grid plate 15; The top of the tower body 1 is equipped with a gear transmission assembly 5 for transmitting power from the output shaft of the motor 21 to the annular component 41. The gear transmission assembly 5 includes a sun gear 51 fixedly sleeved on the output shaft of the motor 21 and located at the top of the tower body 1. The top of the tower body 1 is rotatably connected in an annular array direction with a plurality of planet gears 52 meshing with the sun gear 51. The top of the tower body 1 is rotatably connected with a gear ring 53 located on the outer periphery of the plurality of planet gears 52 and capable of meshing with the planet gears 52. The outer periphery of the gear ring 53 is fixedly connected to the inner wall of the annular component 41. Using the above scheme, the gear transmission assembly 5 is driven by the motor 21 to rotate the ring 41. At this time, the guide slope 42 will force the top of the connecting rod 6 to move upward along the surface of the guide slope 42, and the fixed disk module will also move upward. When the top of the connecting rod 6 slides into the guide groove 43, the distance between the turntable body 23 and the corresponding fixed disk assembly 3 located below it will decrease. At this time, the rotation of the turntable body 23 will cause the solution at the same height to rotate at high speed. Since the gap between the turntable body 23 and the corresponding fixed disk assembly 3 below it is reduced, the flow velocity of the fluid when passing through the gap will increase significantly, and strong shear flow and turbulent disturbance will be formed between the disk surfaces, so that solid particles cannot stay and adhere on the upper surface of the fixed disk assembly 3, thereby effectively inhibiting the formation of solid phase deposition. By setting the gear transmission assembly 5, the power output from the motor 21 can be reduced in speed and increased in torque and transmitted to the ring component 41.

[0022] like Figure 2 , Figure 4 , Figure 6 and Figure 8 As shown, the fixed disk assembly 3 includes a disk body 31. The disk body 31 has a plurality of arc-shaped holes 32 in an annular direction. A rubber sheet 33 is installed at the bottom of the arc-shaped holes 32. The outer arc-shaped part of the rubber sheet 33 is fixedly connected to the disk body 31. The upper surface edge of the rubber sheet 33 abuts against the flange opened in the arc-shaped hole 32. The fixed disk assembly 3 also includes columns 34; except for the disk 31 located at the topmost point, the tops of the other disks 31 are fixedly connected to several columns 34 in a circular array direction, and the top of the column 34 is fixedly connected to a group of disks 31 above it. By adopting the above scheme, when the disk 31 moves upward, the solution above the disk 31 flows into the lower part of it through the rubber sheet 33. This part of the solution will impact the upper surface of the lower set of disks 31 and form a periodic hydraulic scouring when the disk 31 moves vertically back and forth, destroying the thin deposit layer that may be attached to the upper surface of the disk 31, so that it cannot continue to thicken. Meanwhile, as the rubber sheet 33 moves upward on the disk 31, it will deform and reset due to the gravity of the solution and its own elastic recovery, causing the solution to pass through in a pulsed flow. This results in alternating liquid level fluctuations on the upper and lower sides of the disk 31. These liquid level fluctuations will cause periodic changes in the fluid pressure in the inter-disk area, further aggravating the turbulence of the flow field. This keeps the solid particles in a suspended and disturbed state, making it difficult for them to settle and accumulate on the disk surface of the fixed disk assembly 3 or the surface of the rubber sheet 33.

[0023] like Figures 7-9 As shown, a number of sector-shaped columns 311 are fixedly installed on the top of the disk body 31, and a guide plate 313 located above the arc-shaped hole 32 is fixedly connected between two adjacent sector-shaped columns 311. The guide plate 313 is inclined towards the center of the disk body 31. By adopting the above scheme, when the disk 31 moves upward, the fluid passing through the upper set of arc-shaped holes 32 will impact the guide plate 313 and be guided to the surface of the lower set of disks 31, thus creating a disturbance effect and reducing solid deposition.

[0024] like Figures 7-9 As shown, the bottom of the tower body 1 is fixed with several fixed rods 7 in a circular array. The top of the fixed rods 7 passes through several disks 31 and fan-shaped columns 311. Several pistons 71 are fixedly installed on the fixed rods 7 in the vertical direction. In the initial state, the pistons 71 are respectively located at the top of several groups of fan-shaped columns 311 in the vertical direction. The fan-shaped columns 311 are provided with through holes 312 located below the pistons 71. The vertical distance between the bottom of the pistons 71 and the through holes 312 is greater than the vertical height difference between the top and bottom of the guide slope 42. Using the above scheme, when the disk body 31 moves upward, the sector column 311 is driven upward simultaneously. The piston 71 remains stationary due to the fixation of the fixing rod 7. At this time, the solution in the sector column 311 will be discharged to the upper surface of the disk body 31 through the through hole 312 and diffuse radially inward along the disk surface, forming a covering flushing liquid film on the disk surface of the disk body 31. This flushing liquid film continues to flow towards the inner edge of the disk body 31, carrying any small particles that may remain on the disk surface to the inner edge of the disk body 31 and throwing them into the main liquid flow area in the tower, preventing particles from accumulating on the disk surface and forming local deposits.

[0025] Working principle and usage process of this invention: During operation, the running motor 21 drives the ring component 41 to rotate through the gear transmission assembly 5. At this time, the guide slope 42 forces the top of the connecting rod 6 to move upward along the surface of the guide slope 42, and the fixed disk module also moves upward. When the top of the connecting rod 6 slides into the guide groove 43, the gap between the turntable body 23 and the corresponding fixed disk assembly 3 located below it decreases. At this time, the rotation of the turntable body 23 causes the solution at the same height to rotate at high speed. As the gap between the turntable body 23 and the corresponding fixed disk assembly 3 below it decreases, the flow velocity of the fluid when passing through the gap increases significantly, and strong shear flow and turbulent disturbance are formed between the disk surfaces, so that solid particles cannot stay and adhere on the upper surface of the fixed disk assembly 3, thereby effectively inhibiting the formation of solid phase deposition. As the disk 31 moves upward, the solution above the disk 31 flows down through the rubber sheet 33. This solution impacts the upper surface of the lower set of disks 31 and, as the disks 31 move vertically back and forth, forms a periodic hydraulic scouring, which destroys the thin deposit layer that may be attached to the upper surface of the disks 31, preventing it from continuously thickening.

[0026] As the disk 31 moves upward, it simultaneously drives the sector column 311 upward. The piston 71 remains stationary due to the fixing rod 7. At this time, the solution in the sector column 311 will be discharged to the upper surface of the disk 31 through the through hole 312 and diffuse radially inward along the disk surface, forming a covering flushing liquid film on the disk surface of the disk 31. This flushing liquid film continues to flow towards the inner edge of the disk 31, carrying any small particles that may remain on the disk surface to the inner edge of the disk 31 and throwing them into the main liquid flow area in the tower, preventing particles from accumulating on the disk surface and forming local deposits.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary disc extraction tower for reducing solid-phase deposition, comprising a tower body (1), a light liquid inlet (11), a heavy liquid inlet (12), a light liquid outlet (13), and a heavy liquid outlet (14), wherein a rotary disc assembly (2) and a fixed disc assembly (3) are mounted on the tower body (1), characterized in that, It also includes: a fixed disk module consisting of several fixed disk assemblies (3) connected vertically, a set of connecting rods (6) fixed to the top of the fixed disk module, and a columnar cam assembly (4) rotatably connected to the top of the tower body (1) to enable the connecting rods (6) to reciprocate in the vertical direction. The turntable assembly (2) includes a support plate (22) fixedly installed on the top of the tower body (1). A motor (21) is fixedly installed on the support plate (22). The output end of the motor (21) passes through the support plate (22) and the tower body (1) and extends to the bottom of the tower body (1). Several turntable bodies (23) located between adjacent fixed disc assemblies (3) are fixedly connected at equal intervals on the output shaft of the motor (21). The columnar cam assembly (4) includes an annular part (41) rotatably connected to the top of the tower body (1) and driven by the output shaft of the motor (21). The annular part (41) is provided with guide slope (42) and guide groove (43). The two sets of guide slope (42) are respectively connected to different ends of the two sets of guide groove (43). The top of the connecting rod (6) extends upward to the outside of the tower body (1) and can slide along the guide slope (42) and guide groove (43).

2. The rotating disc extraction tower for reducing solid phase deposition according to claim 1, characterized in that: The top of the tower body (1) cavity is fixedly installed with a grid plate (15) located below the heavy liquid inlet (12), and the connecting rod (6) is movably sleeved on the grid plate (15).

3. The rotating disc extraction tower for reducing solid phase deposition according to claim 1, characterized in that: The top of the tower body (1) is equipped with a gear transmission assembly (5) for transmitting power from the output shaft of the motor (21) to the ring (41).

4. The rotating disc extraction tower for reducing solid phase deposition according to claim 3, characterized in that: The gear transmission assembly (5) includes a sun gear (51) fixedly sleeved on the output shaft of the motor (21) and located at the top of the tower body (1). The top of the tower body (1) is rotatably connected to a plurality of planet gears (52) meshing with the sun gear (51) in a circular array direction. The top of the tower body (1) is rotatably connected to a gear ring (53) located on the outer periphery of the plurality of planet gears (52) and capable of meshing with the planet gears (52). The outer periphery of the gear ring (53) is fixedly connected to the inner wall of the ring member (41).

5. The rotating disc extraction tower for reducing solid phase deposition according to claim 1, characterized in that: The fixed disk assembly (3) includes a disk body (31), which has a plurality of arc-shaped holes (32) in an annular direction. A rubber sheet (33) is installed at the bottom of the arc-shaped holes (32). The outer arc-shaped part of the rubber sheet (33) is fixedly connected to the disk body (31), and the upper surface edge of the rubber sheet (33) abuts against the flange opened in the arc-shaped holes (32).

6. The rotating disc extraction tower for reducing solid phase deposition according to claim 5, characterized in that: The fixed disk assembly (3) also includes a column (34); Except for the topmost disk (31), the tops of the other disks (31) are fixed with several columns (34) in a circular array direction, and the top of the columns (34) are fixedly connected to a group of disks (31) above.

7. The rotating disc extraction tower for reducing solid phase deposition according to claim 6, characterized in that: A number of sector-shaped columns (311) are fixedly installed on the top of the disk (31), and a guide plate (313) located above the arc-shaped hole (32) is fixed between two adjacent sector-shaped columns (311). The guide plate (313) is inclined toward the center of the disk (31).

8. The rotating disc extraction tower for reducing solid phase deposition according to claim 7, characterized in that: The bottom of the tower body (1) is fixed with several fixed rods (7) in a circular array. The top of the fixed rods (7) passes through several discs (31) and fan-shaped columns (311) upwards. Several pistons (71) are fixedly installed on the fixed rods (7) in the vertical direction. In the initial state, the pistons (71) are respectively located at the top of several groups of fan-shaped columns (311) in the vertical direction. The sector column (311) has a through hole (312) located below the piston (71).

9. The rotating disc extraction tower for reducing solid phase deposition according to claim 8, characterized in that: The vertical distance between the bottom of the piston (71) and the through hole (312) is greater than the vertical height difference between the top and bottom of the guide slope (42).

10. An extraction method using a rotating disc extraction tower for reducing solid phase deposition, comprising a rotating disc extraction tower for reducing solid phase deposition as described in any one of claims 1-9, characterized in that, The extraction method is as follows: When the motor (21) is running, the ring (41) is driven to rotate through the gear transmission assembly (5). At this time, the guide slope (42) will force the top of the connecting rod (6) to move up along the surface of the guide slope (42), and the fixed disk module will also move up. When the top of the connecting rod (6) slides into the guide groove (43), the gap between the turntable body (23) and the corresponding fixed disk assembly (3) located below it will decrease. At this time, the rotation of the turntable body (23) will cause the solution at the same height to rotate at high speed. As the gap between the turntable body (23) and the corresponding fixed disk assembly (3) below it is reduced, the flow rate of the fluid when passing through the gap will increase significantly, and strong shear flow and turbulent disturbance will be formed between the disk surfaces, so that solid particles cannot stay and adhere on the upper surface of the fixed disk assembly (3), thereby effectively suppressing the formation of solid phase deposition.

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