A high-efficiency collision-type multiphase cavitation generating device and processing method

Abstract

The present invention discloses an efficient collision-type multi-phase cavitation generating device and a processing method for purifying impurities in various types of liquids. A transmission shaft, a large bevel gear, a first intermediate transmission bevel gear, a small bevel gear, a second intermediate transmission bevel gear, two double-moving discs and a plurality of electromagnetic coils are arranged inside the cavitation wall breaking pool. The large bevel gear and the small bevel gear are coaxially fixed on the transmission shaft. The two conical double-moving discs with the same structure are symmetrically arranged relative to the small bevel gear. Each double-moving disc consists of an outer conical moving disc body and an inner conical moving disc body. The inner conical moving disc body is coaxially sheathed inside the outer conical moving disc body, and the gap between them constitutes a water flow channel connected to the water inlet of the double-moving disc body. Liquid to be broken with magnetic powder added is injected into the cavitation wall breaking pool to submerge the first electromagnetic coil and the second electromagnetic coil. The high-pressure water pump and the high-speed drive motor are in operation, and the liquid to be broken is sprayed from the liquid circulation inlet to the two double-moving discs at the same time to form a symmetrical collision water flow to generate cavitation.

Description

Technical Field

[0001] The present invention belongs to the technical field of cavitation effect, and specifically relates to a cavitation generator, which is used for purifying impurities in various liquids in different application scenarios. Background Art

[0002] With the development of society and advancement of science and technology, the demand for impurity treatment within liquids continues to increase. In industrial wastewater treatment, liquids contain a variety of complex microparticles and chemical components, which are difficult to completely purify with traditional treatment equipment, leading to environmental pollution and waste of resources. In domestic life, the requirements for sewage treatment are also constantly increasing, requiring more efficient and intelligent liquid treatment methods. Therefore, there is an urgent need for an innovative liquid impurity removal device that can efficiently remove impurities from various liquids, increase processing speed, reduce costs, and adapt to the needs of different application scenarios.

[0003] Cavitation technology, as an innovative liquid treatment method, has attracted widespread attention for its multiple advantages, including high purification efficiency, microjet cleaning, environmental sustainability, low energy consumption, strong adaptability, and efficient impurity decomposition. By inducing the cavitation effect, a large number of cavitation bubbles are generated, forming a cavitation cloud. The cavitation cloud, upon its collapse, releases high temperature, high pressure, and microjets, rapidly and thoroughly breaking up tiny particles and impurities in turbid liquids, achieving highly effective purification. Simultaneously, the generated microjets possess a strong cleaning effect, penetrating into tiny areas for high-speed removal, enhancing the comprehensiveness and depth of treatment. The environmental sustainability of cavitation technology stems from its inherent physical effects, which eliminate the need for additional chemical agents and minimize environmental pollution. Its low energy consumption and strong adaptability give cavitation technology significant advantages in various liquid treatment scenarios. Overall, cavitation technology provides an efficient, environmentally friendly, and low-cost solution for removing impurities from turbid liquids.

[0004] Rotating hydrodynamic cavitation devices have been widely used in industrial and scientific applications due to their cavitation technology. They offer advantages such as excellent cavitation effects and controllable cavitation intensity. However, existing hydrodynamic cavitation devices still suffer from a number of issues, including a small cavitation zone, improved fluidity, and poor stability under complex operating conditions.

[0005] Chinese Patent Publication No. CN111229074A, titled "A Rotating Gear Cylinder Hydrodynamic Cavitation Device," proposes a rotary hydrodynamic cavitation device comprising a drive mechanism, a stationary drum, and a rotating drum. Automatic material suction is achieved through the selection of the rotating drum. Liquid flows through the throttling layer of the radial inter-tooth gap, experiencing throttling shear. Liquid is released between the axial and radial teeth, forming cavitation bubbles that then collapse, enhancing convection and improving processing efficiency. However, the cylindrical rotor has a large moment of inertia, which reduces energy efficiency and results in suboptimal cavitation results. Chinese patent publication number CN115504529A, entitled "A High-Efficiency Cavitation Wall Breaking Device," proposes a cavitation wall breaking device consisting of a nozzle, a nozzle chassis, and a moving disk. The moving disk rotates at high speed, generating centrifugal force when the high-pressure liquid flows through the nozzle toward the groove of the moving disk, thereby improving the cavitation efficiency of the liquid in the radial direction of the moving disk. However, if the gap between the chassis and the surface of the moving disk is large, the interface fluid on the surface of the moving disk will flow out directly without cavitation, resulting in a reduced proportion of the fluid participating in cavitation and a small cavitation area. Summary of the Invention

[0006] The purpose of the present invention is to solve a series of problems existing in traditional rotary hydraulic cavitation devices, such as small cavitation area and need to improve fluidity, and to improve their performance and application range. A new type of high-efficiency collision-type multiphase flow cavitation generating device and its processing method are proposed. By changing the structure of the moving disk, the collision effect of the fluid at the collision point is improved, thereby increasing the cavitation efficiency.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is a high-efficiency collision-type multi-phase cavitation generating device: it has a closed cavitation wall breaking pool, and a transmission shaft, a large bevel gear, a first intermediate transmission bevel gear, a small bevel gear, a second intermediate transmission bevel gear, two double-moving discs and a plurality of electromagnetic coils are arranged inside the cavitation wall breaking pool. The large bevel gear and the small bevel gear are both coaxially fixed on the transmission shaft, and two first intermediate transmission bevel gears with the same structure are symmetrically arranged on both sides of the transmission shaft and are meshed with the large bevel gear on the side close to the large bevel gear; two The second intermediate transmission bevel gears with the same structure are symmetrically arranged on both sides of the transmission shaft and mesh with the small bevel gear on the side close to the small bevel gear; a high-speed drive motor is provided on the outside of the cavitation wall breaking pool, and the output shaft of the high-speed drive motor is coaxially fixedly connected to the transmission shaft. Two conical double-moving disc bodies with the same structure are symmetrically arranged relative to the small bevel gear, and the top is the water inlet of the double-moving disc body. Each double-moving disc body consists of an outer conical moving disc body and an inner conical moving disc body. The outer conical moving disc body is a hollow cone, and the inner conical moving disc body is coaxially sleeved inside. The outer conical moving disc body is The gap between the movable disc body and the inner conical movable disc body forms a water flow channel connected to the water inlet of the double movable disc body; a circle of tooth grooves is formed on the outer surface of the bottom of each outer conical movable disc body, which meshes with the first intermediate transmission bevel gear on the same side; the bottom center of the inner conical movable disc body is fixedly connected to the central axis of the second intermediate transmission bevel gear on the same side; two liquid circulation inlets are provided at the bottom of the cavitation breaking tank, and two liquid injection ports are provided on the top side wall, and the liquid circulation inlets are each connected to the water inlet of the double movable disc body on the same side through a high-pressure water pump on the same side; the space between the large bevel gear and the top of the cavitation breaking tank is provided with a first electromagnetic coil and a second electromagnetic coil symmetrically arranged on both sides of the transmission shaft, the space between the two second intermediate transmission bevel gears and the transmission shaft is provided with a third electromagnetic coil and a fourth electromagnetic coil symmetrically arranged on both sides of the transmission shaft, and the space between the small bevel gear and the bottom of the cavitation breaking tank is provided with a fifth electromagnetic coil and a sixth electromagnetic coil symmetrically arranged on both sides of the transmission shaft. These six electromagnetic coils are energized and de-energized at intervals, forming a magnetic field in the liquid that can change the distribution and movement of magnetic powder in the liquid.

[0008] The technical solution adopted by the processing method of a high-efficiency collision-type multi-phase cavitation generating device of the present invention is:

[0009] The liquid to be broken with magnetic powder is injected into the cavitation wall breaking tank from the liquid injection port, submerging the first electromagnetic coil and the second electromagnetic coil;

[0010] The high-pressure water pump and high-speed drive motor work, and the wall-breaking liquid is sprayed from the liquid circulation inlet to the two double-moving discs at the same time. The two double-moving discs rotate at the same time, and the centrifugal force and fluid dynamics bring the liquid out, forming symmetrical colliding water flows and generating cavitation.

[0011] Furthermore, the third electromagnetic coil and the fourth electromagnetic coil are powered off at the same time, and the first electromagnetic coil, the second electromagnetic coil, the fifth electromagnetic coil and the sixth electromagnetic coil are powered on at the same time to absorb the magnetic powder, so that the magnetic powder moves from the center to the surrounding areas; the first electromagnetic coil, the second electromagnetic coil, the fifth electromagnetic coil and the sixth electromagnetic coil are powered off at the same time, and the third electromagnetic coil and the fourth electromagnetic coil are powered on at the same time to absorb the magnetic powder, so that the magnetic powder moves from the surrounding areas to the center; the power-on and power-off states are adjusted cyclically

[0012] Compared with the prior art, the present invention has the following outstanding beneficial effects:

[0013] (1) The present invention adopts a double-moving disc structure with left-right symmetry, and utilizes the double-moving disc structure to produce a cavitation effect to remove impurities from the liquid, achieving a collision effect at the outflow end. By making the structure and groove design of the moving disc symmetrical in the horizontal direction, the double-moving disc rotates at high speed at the same time, forming a relatively symmetrical water flow shape, carrying bubbles formed by cavitation in the moving disc, and continuing to produce cavitation in the area after the liquid flows out. This symmetry ensures the uniformity of the collision effect, comprehensively treats the liquid, and further improves the cleaning and treatment effect. The advantage of the collision is that it increases kinetic energy and pressure, so that a stronger physical effect is produced in the collision area, which helps to more thoroughly break the wall and remove impurities, and improves the efficiency of liquid treatment. In addition, the double-moving disc is driven to rotate by a bevel gear, and the rotation directions of the two sides are opposite, causing vortexes in the liquid, which increases the stirring effect of the liquid. When the double-moving disc structure rotates in opposite directions, the collision speed of the liquid on both sides is higher, which may lead to stronger physical effects, such as local high temperature, high pressure and shock waves, thereby improving the efficiency and effect of liquid treatment.

[0014] (2) The present invention adds electromagnetic coils that are energized to each other so that the magnetic powder moves back and forth from the periphery to the center, and realizes the liquid-solid-gas three-phase interaction through the cavitation collision area. When the magnetic powder passes through the cavitation collision area, due to the dynamic action of the fluid and the influence of the magnetic field, the magnetic powder particles are subjected to stronger interactions in the fluid, which helps to generate more eddy currents and stirring effects. The electromagnetic coil can regulate the movement of the magnetic powder in the fluid by changing the intensity and direction of the magnetic field, making it more controllable and customizable. A stronger solid-liquid-gas three-phase interaction occurs between the liquid, cavitation bubbles and magnetic powder particles, which improves the cavitation efficiency and increases the efficiency of impurity decomposition, resulting in better purification and treatment effects of the liquid.

[0015] (3) The present invention adopts a double-moving disc design with a conical structure, which fully utilizes the centrifugal force generated by the high-speed rotation of the double-moving disc. Compared with the traditional structure, it guides the liquid flow more effectively and enhances the centrifugal separation effect of the liquid. The design of the conical structure makes it easier to adjust the channel spacing between the double-moving discs, improving the flexible processing ability of liquids under different conditions. The multi-stage concave-convex groove design produces a more efficient cavitation effect and realizes an optimized wall breaking and impurity removal process. Compared with the traditional single-moving disc structure, the double-moving disc can more effectively generate centrifugal force during the collision process, enhance the centrifugal effect of the liquid, and improve the centrifugal separation effect. The use of a conical cavitation rotor further improves the utilization rate of the cavitation area and expands the range of the cavitation area.

[0016] (4) The surface of the moving disc of the present invention adopts a water flow channel along the busbar direction, the width of which gradually decreases from the top to the bottom of the moving disc body, the depth gradually decreases from the top to the bottom, and the length gradually decreases from the top to the bottom. Due to the high-speed rotation of the moving teeth, the liquid is affected by the inertial centrifugal force, and the speed increases from the top to the bottom of the moving disc body. By designing the width of the busbar direction water flow channel from large to small, the effect of gradually decreasing the width of the liquid during the flow process can be achieved, resulting in an increase in the fluid speed, thereby enhancing the kinetic energy. It helps to form more intense liquid movement and collision in the cavitation collision area. When the fluid passes through the busbar direction water flow channel with a variable cross-section, a negative pressure area is generated, which promotes the occurrence of cavitation effect. These negative pressure areas form bubbles in the cavitation collision area, thereby crushing and decomposing impurities in the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency collision-type multiphase cavitation generating device of the present invention;

[0019] Figure 2 yes Figure 1 Schematic diagram of the collision effect caused by the outflow of liquid in the double-moving disc;

[0020] Figure 3 yes Figure 1 A magnified view of the structure of the middle double-moving disc;

[0021] Figure 4 Figure 3 A magnified axonometric view of the internal structure of the middle double-moving disc;

[0022] Figure 5 yes Figure 4 A partial cross-sectional enlarged view of the water flow channel in the busbar direction on the double-moving disc body and a schematic diagram of cavitation generation;

[0023] Figure 6 yes Figure 4A partial cross-section of the circumferential channel groove on the double-moving disc body and a schematic diagram of cavitation generation.

[0024] Explanation of the accompanying symbols: 1. First high-pressure water pump; 2. Cavitation wall breaking tank; 3. Cavitation generator; 4-1. First electromagnetic coil 1; 4-2. Second electromagnetic coil 1; 4-3. Third electromagnetic coil 1; 4-4. Fourth electromagnetic coil 1; 4-5. Fifth electromagnetic coil 1; 4-6. Sixth electromagnetic coil 1; 5. High-speed drive motor; 6. Liquid inlet; 7. Transmission shaft; 8-1. Large bevel gear; 8-2. First intermediate transmission bevel gear; 9-1. Small bevel gear; 9-2. Second intermediate transmission bevel gear; 11. Second high-pressure water pump; 12. Liquid discharge port; 13. First liquid circulation inlet; 14. Second liquid circulation inlet; 15. Water inlet of double movable disc; 16. Outer conical movable disc; 17. Inner conical movable disc; 18. Drainage cone; 19. Conical annular groove three; 20. Conical annular groove two; 21. Conical annular groove 1; 22. Busbar direction water flow channel; 23. Busbar direction water flow channel groove 1; 24. Busbar direction water flow channel groove 2; 25. Busbar direction water flow channel groove 3; 26. Busbar direction water flow channel groove 4; 27. Cavitation bubble group generated by busbar direction water flow channel groove 1; 28. Cavitation bubble group generated by busbar direction water flow channel groove 2; 29. ​​Cavitation bubble group generated by busbar direction water flow channel groove 3; 30. Cavitation bubble group generated by busbar direction water flow channel groove 4; 31. Circumferential direction water flow channel 1; 32. Circumferential direction water flow channel 2; 33. Circumferential direction water flow channel 3; 34. Circumferential direction groove; 35. Convex body on the inner surface of the outer conical moving disk; 36. Cavitation bubble group generated by the cooperation of the convex body and the circumferential direction groove; 37. Magnetic powder; 38. Cavitation bubble group generated in the moving disk body. DETAILED DESCRIPTION

[0025] like Figure 1 and Figure 2As shown, the present invention discloses a high-efficiency, counter-collision, multi-phase cavitation generator device comprising a closed cavitation wall-breaking tank 2, within which a cavitation generator is disposed. The cavitation generator comprises a transmission shaft 7, a large bevel gear 8-1, a first intermediate transmission bevel gear 8-2, a small bevel gear 9-1, a second intermediate transmission bevel gear 9-2, a double-acting disc 3, and multiple electromagnetic coils. The large bevel gear 8-1 and the small bevel gear 9-1 are coaxially fixedly sleeved on the transmission shaft 7, with the outer diameter of the large bevel gear 8-1 being larger than that of the small bevel gear 9-1. Two first intermediate transmission bevel gears 8-2 of identical structure are symmetrically arranged relative to the transmission shaft 7. The central axes of the two first intermediate transmission bevel gears 8-2 are perpendicular to the central axes of the large bevel gear 8-1 and the transmission shaft 7. The two first intermediate transmission bevel gears 8-2 are arranged perpendicularly and symmetrically on either side of the transmission shaft 7 and mesh with the large bevel gear 8-1 on the side closest to the large bevel gear 8-1. Similarly, two second intermediate bevel gears 9-2 with identical structure are perpendicular to the transmission shaft 7 and symmetrically arranged on either side of the transmission shaft 7. They mesh with the small bevel gear 9-1 on the side closest to the small bevel gear 9-1. The first intermediate bevel gear 8-2 and the second intermediate bevel gear 9-2 are located between the large bevel gear 8-1 and the small bevel gear 9-1. There is a distance between the first and second intermediate bevel gears 8-2 and 9-2, so they do not contact each other. As a result, the large bevel gear 8-1 and the two first intermediate bevel gears 8-2 mesh together to form a U-shaped structure, and the small bevel gear 9-1 and the second intermediate bevel gear 9-2 mesh together to form a U-shaped structure, with the openings of the two U-shaped structures facing each other.

[0026] A high-speed drive motor 5 is provided outside the cavitation wall breaking pool 2. The output shaft of the high-speed drive motor 5 is coaxially fixedly connected with the transmission shaft 7 inside the cavitation wall breaking pool 2, driving the transmission shaft 7 to rotate, thereby causing the large bevel gear 8-1 to drive the two first intermediate transmission bevel gears 8-2 to rotate simultaneously, and the small bevel gear 9-1 to drive the two second intermediate transmission bevel gears 9-2 to rotate.

[0027] There are two double-moving disc bodies 3. The two double-moving disc bodies 3 have the same structure and are both conical. They are symmetrically arranged on both sides relative to the transmission shaft 7 and the small bevel gear 9-1, and the central axes of the two double-moving disc bodies 3 are collinear with the central axes of the two second intermediate transmission bevel gears 9-2, and are coaxially fixedly connected with the second intermediate transmission bevel gears 9-2 on the same side.

[0028] Each dual movable disc 3 comprises an outer conical movable disc 16 and an inner conical movable disc 17. The inner conical movable disc 17 is coaxially sleeved within the outer conical movable disc 16 with a gap therebetween. The gap between the outer surface of the inner conical movable disc 17 and the inner surface of the outer conical movable disc 16 forms a water flow channel. Both the outer conical movable disc 16 and the inner conical movable disc 17 are conical in shape, with the top of the cone close to the inner wall of the cavitation tank 2 and away from the second intermediate transmission bevel gear 9-2, and the bottom of the cone close to the second intermediate transmission bevel gear 9-2.

[0029] The outer conical movable disc 16 is a hollow cone, housing an inner conical movable disc 17. The inner conical movable disc 17 is a solid cone, with the outer surface of the inner conical movable disc 17 facing the inner surface of the outer conical movable disc 16. A tooth groove is formed on the bottom outer surface of each outer conical movable disc 16, which meshes with the first intermediate bevel gear 8-2 on the same side. In other words, the first intermediate bevel gear 8-2 simultaneously meshes with the outer conical movable disc 16 and the large bevel gear 8-1, driving the large bevel gear 8-1 to rotate simultaneously. The bottom center of the inner conical movable disc 17 extends toward the center of the second intermediate bevel gear 9-2. The inner conical movable disc 17 and the second intermediate bevel gear 9-2 on the same side are coaxially fixedly connected together, and the second intermediate bevel gear 9-2 drives the inner conical movable disc 17 to rotate coaxially.

[0030] The large bevel gear 8-1 is positioned above the small bevel gear 9-1, which is nestled on the bottom of the transmission shaft 7. The two second intermediate bevel gears 9-2 are positioned between the two double-moving discs 3, which are positioned below the first intermediate bevel gear 8-2 on the same side. The central axes of the transmission shaft 7, large bevel gear 8-1, and small bevel gear 9-1 are arranged vertically and collinearly. The central axes of the first intermediate bevel gear 8-2, the two second intermediate bevel gears 9-2, and the two double-moving discs 3 are arranged horizontally.

[0031] When the high-speed drive motor 5 is operating, it drives the large bevel gear 8-1 and the small bevel gear 9-1 to rotate. The rotation of the large bevel gear 8-1 drives the two first intermediate transmission bevel gears 8-2, which in turn rotate the two outer conical movable discs 16. The rotation of the small bevel gear 9-1 drives the two second intermediate transmission bevel gears 9-2, which in turn rotate the two inner conical movable discs 17. Furthermore, the two inner conical movable discs 17 rotate in opposite directions, and the two outer conical movable discs 16 rotate in opposite directions.

[0032] The cavitation cell 2 is equipped with two liquid circulation inlets 13 and 14 at its bottom and two liquid discharge ports 12. Two liquid inlets 6 are located on the top sidewalls of the cavitation cell 2. Liquid to be broken, containing magnetic powder 37, is injected into the cavitation cell 2 through the liquid inlets 6, submerging the cavitation generator. The first and second liquid circulation inlets 13 and 14 are connected via respective pipes to corresponding dual-action disc water inlets 15 on the same side of the dual-action disc 3. A high-pressure water pump, a first high-pressure water pump 1 and a second high-pressure water pump 11, are installed on each of the respective pipes. Each dual-action disc 3 has a dual-action disc water inlet 15 at its top. Thus, each dual-action disc water inlet 15 is connected to a liquid circulation inlet 13 or 14 on the same side via corresponding pipes and a high-pressure water pump 1 or 11. When the high-pressure water pumps 1 and 11 are operating simultaneously, the liquid to be broken, containing magnetic powder 37, is pumped from the cavitation cell 2 into the corresponding dual-action disc water inlet 15.

[0033] like Figure 2As shown, six electromagnetic coils are installed around the perimeter of the cavitation cell 2 and within the mid-end collision cavitation zone: the first electromagnetic coil 4-1, the second electromagnetic coil 4-2, the third electromagnetic coil 4-3, the fourth electromagnetic coil 4-4, the fifth electromagnetic coil 4-5, and the sixth electromagnetic coil 4-6. These six electromagnetic coils are alternately energized and de-energized, creating a magnetic field in the liquid that can alter the distribution and movement of magnetic powder 37. As the magnetic powder 37 passes through the cavitation collision zone, the particles experience stronger interactions within the fluid due to the dynamic effects of the fluid and the influence of the magnetic field. The first and second electromagnetic coils 4-1 and 4-2 are positioned in the space between the large bevel gear 8-1 and the top of the cavitation cell 2, symmetrically arranged on either side of the transmission shaft 7. The third and fourth electromagnetic coils 4-3 and 4-4 are positioned in the space between the two second intermediate transmission bevel gears 9-2 and the transmission shaft 7, symmetrically arranged on either side of the transmission shaft 7. A fifth electromagnetic coil 4-5 and a sixth electromagnetic coil 4-6 are positioned in the space between the small bevel gear 9-1 and the bottom of the cavitation tank 2. The fifth and sixth electromagnetic coils 4-5 and 4-6 are symmetrically arranged on either side of the transmission shaft 7. When the bilaterally symmetrical dual-moving discs 3 rotate simultaneously at high speed, a relatively symmetrical water flow pattern is formed, carrying bubbles formed within the dual-moving discs 3. The collision effect persists in the area after the liquid flows out, forming a cavitation bubble cluster 38. The coordination of the six electromagnetic coils enables a three-phase interaction between solid, liquid, and gas. When the third and fourth electromagnetic coils 4-3 and 4-4 are simultaneously de-energized, preventing them from generating a magnetic field, the remaining first, second, fifth, and sixth electromagnetic coils 4-1, 4-2, 4-5, and 4-6 are simultaneously energized to attract magnetic powder 37, causing the magnetic powder 37 to move from the center to the surrounding areas. Then, the first electromagnetic coil 4-1, the second electromagnetic coil 4-2, the fifth electromagnetic coil 4-5, and the sixth electromagnetic coil 4-6 are simultaneously powered off, and the third electromagnetic coil 4-3 and the fourth electromagnetic coil 4-4 are simultaneously powered on to attract the magnetic powder 37. This allows the magnetic powder 37 to move from the periphery toward the center, passing through the cavitation collision zone to achieve a three-phase interaction between liquid, solid, and gas. When the first electromagnetic coil 4-1, the second electromagnetic coil 4-2, the fifth electromagnetic coil 4-5, and the sixth electromagnetic coil 4-6 are simultaneously powered on to attract the magnetic powder 37, and then the third electromagnetic coil 4-3 and the fourth electromagnetic coil 4-4 in the middle are simultaneously powered off, the magnetic powder 37 moves from the center to the periphery, passing through the cavitation collision zone to achieve a three-phase interaction between liquid, solid, and gas. This interaction can lead to more complex fluid behavior, generating more eddy currents and stirring effects. Through the liquid-solid-gas interaction, the gas is evenly mixed in the liquid, enhancing the gas-liquid interaction effect.As needed, the power-on and power-off states of the first electromagnetic coil 4-1, the second electromagnetic coil 4-2, the fifth electromagnetic coil 4-5, the sixth electromagnetic coil 4-6, and the third electromagnetic coil 4-3 and the fourth electromagnetic coil 4-4 are cyclically adjusted to optimize the solid-liquid-gas three-phase interaction. The electromagnetic coils can regulate the movement of magnetic powder 37 in the fluid by changing the intensity and direction of the magnetic field, making cavitation more controllable and customizable. By introducing the magnetic field and magnetic powder 37, the physical properties of the collision area can be changed, helping to increase the efficiency of impurity decomposition and achieve better purification and treatment of the liquid.

[0034] The conical double-acting discs 3 have a top end at the liquid inlet and a bottom end at the outlet, creating a collision effect at the outlet. The two double-acting discs 3 rotate at high speed, forming relatively symmetrical water flow patterns at the outlet. Because they rotate in opposite directions, the resulting water flows collide at the outlet, generating an increase in kinetic energy and pressure.

[0035] like Figure 3 As shown, the central axes of the double-moving disc water inlet 15, the outer conical moving disc 16, and the inner conical moving disc 17 are collinear, forming a water flow channel for the liquid to be broken. With the exception of the two sections near the inflow end of the double-moving disc water inlet 15 and the outflow end near the bottom, the gap between the inner surface of the outer conical moving disc 16 and the outer surface of the inner conical moving disc 17 from the top to the bottom of the cone is equal, that is, the cross-sections of the water flow channels are all equal. The gap in the water flow channel between the inner surface of the outer conical moving disc 16 and the outer surface of the inner conical moving disc 17 is set at a distance between the two sections near the inflow end of the double-moving disc water inlet 15 and the outflow end near the bottom. The gap in the water flow channel between these two sections is larger than the gap in other water flow channels, that is, the gap between the inflow and outflow sections of the water flow channel is larger.

[0036] like Figure 4As shown, a drainage cone 18 is formed on the top of the inner conical movable disc body 17, and the drainage cone 18 is opposite to the water inlet 15 of the double movable disc body. Through the drainage of the drainage cone 18, the liquid to be broken from the water inlet 15 of the double movable disc body enters the channel between the double movable disc body 3 to generate cavitation. On the side wall of the drainage cone 18, three annular grooves are opened from the top to the bottom, namely, cone annular groove three 19, cone annular groove two 20 and cone annular groove one 21. These three annular grooves are arranged at equal intervals along the central axis of the inner conical movable disc body 17 and are arranged parallel to each other. From top to bottom, the groove depth of the three annular grooves gradually decreases, and the length along the water flow direction from top to bottom gradually becomes shorter, forming a gradually decreasing structure. As the liquid to be broken through the drainage cone 18 flows, it sequentially enters the three annular grooves, creating a negative pressure in the diverging gaps between the three grooves. When the negative pressure reaches a certain limit, cavitation occurs, leading to the formation of bubbles in the diverging gaps. These bubbles gradually expand with the flow of the liquid and eventually burst during the flow, forming high-pressure, high-temperature, powerful shock waves and high-speed microjets that break the liquid. As the liquid to be broken flows axially downward from top to bottom, it sequentially passes through the three annular grooves of varying depths. Whenever the turbid liquid flows through an annular groove, the sudden change in flow direction and velocity creates a local vortex, triggering collisions and intense friction between liquid particles and between particles and the solid wall, resulting in pressure loss. A negative pressure zone forms in the diverging gaps between the annular grooves. When the pressure in this zone falls below the saturated vapor pressure of the fluid medium, a large number of bubbles are generated. As the liquid carries these bubbles out of the annular grooves, the pressure gradually increases, and the bubbles gradually develop and collapse, forming a high-temperature, high-pressure, high-speed water jet that pulverizes and decomposes impurities within the liquid.

[0037] The volume of the conical annular groove 3 19 is the largest. When it is formed, the low-pressure area is the largest, while the high-pressure area is the smallest. This triggers a large number of cavitation bubble groups. These cavitation bubble groups move with the water flow toward the high-pressure area, collectively growing, developing, collapsing, and collapsing in a short period of time, releasing a large amount of energy, effectively crushing and decomposing the larger and more solid inorganic and organic matter inside the liquid. The liquid after cavitation treatment continues to flow along the drainage cone 18 through the conical annular groove 2 20. Due to the loss of kinetic energy, the flow rate of the liquid slows down. To ensure that the pressure value in the negative pressure zone is lower than the saturated vapor pressure of the liquid medium, the depth of the conical annular groove 20 is designed to be shallower than that of the conical annular groove 3 19, so that its length along the direction of water flow is shorter than that of the conical annular groove 3 19. The negative pressure zone formed in this way is smaller in volume, and the cavitation bubble groups generated are slightly smaller in scale. However, the energy released when collapsing can still cavitate and decompose the residual impurities in the liquid again. After cavitation treatment in conical annular groove 20, the liquid continues to flow toward conical annular groove 1 21. During this stage, the liquid's velocity slows further due to the effects of flow and pressure loss. To maintain the pressure in the negative pressure zone at the liquid's saturated vapor pressure, conical annular groove 1 21 is designed to be shallower than conical annular groove 20, making its length along the flow direction shorter than that of conical annular groove 20. This creates a smaller negative pressure zone, allowing the energy released by the cavitation bubbles to further cavitate and decompose the liquid. After three cavitation treatments, the liquid ultimately flows into the channel of the dual-action disc 3.

[0038] See also Figure 3 like Figure 4As shown, on the outer surface of the inner conical rotor 17, from the bottom of the drainage cone 18 to the bottom of the inner conical rotor 17, i.e., along the generatrical direction of the water flow from front to back, multiple identical generatrical water flow channels 22 are evenly spaced along the circumference. Each generatrical water flow channel 22 gradually decreases in length, depth, and width along the generatrical direction from front to back, resulting in a gradually decreasing water flow cross-section. Due to the high-speed rotation of the inner conical rotor 17, the liquid is subjected to inertial centrifugal force, and its velocity increases from top to bottom. By designing the cross-sections of the multiple identical generatrical water flow channels 22 from large to small, the cross-sectional area of ​​the liquid is gradually reduced during flow, resulting in an increase in fluid velocity and thus enhancing kinetic energy. This facilitates more intense liquid motion and collisions in the cavitation collision zone. When the fluid passes through the generatrical variable cross-section flow channel, negative pressure regions are generated, promoting cavitation. These negative pressure regions form bubbles in the cavitation collision zone, thereby breaking up and decomposing impurities in the liquid. Due to the changes in the flow channel, the liquid is subjected to centrifugal forces. The increased flow velocity and enhanced centrifugal effect contribute to more intense liquid motion and collisions in the cavitation collision zone. As the fluid passes through the varying lengths of the busbar flow channel 22, negative pressure regions are generated, promoting the occurrence of cavitation. These negative pressure regions form bubbles in the cavitation collision zone, breaking up and decomposing impurities in the liquid. The varying depth of the busbar flow channel 22 results in sudden changes in the liquid's flow direction and velocity, creating eddies and a stirring effect.

[0039] In the middle of the bottom surface of each generatrix direction water flow channel 22, a plurality of bottom grooves of different depths and lengths are opened along the generatrix direction. Two adjacent bottom grooves along the generatrix direction are not connected, and there is a gap between them. The distance between two adjacent bottom grooves along the generatrix direction remains equal. Figure 4 In the example, four bottom grooves of different depths and lengths are opened in the middle of the bottom surface of a busbar direction water flow channel 22. From the front to the back of the busbar direction, they are busbar direction water flow channel bottom groove 1 23, busbar direction water flow channel bottom groove 24, busbar direction water flow channel bottom groove 3 25 and busbar direction water flow channel bottom groove 4 26. Figure 5 As shown, the depth of the bottom grooves of the multiple water flow channels along the generatrix direction gradually decreases, and the length gradually shortens, forming a gradually decreasing structure.

[0040] The liquid to be broken passes through the drainage cone 18 and flows backward into the busbar direction water flow channel 22. In the busbar direction water flow channel 22, it passes through the busbar direction water flow channel bottom groove 1 23, the busbar direction water flow channel bottom groove 24, the busbar direction water flow channel bottom groove 3 25 and the water flow channel bottom groove 3 26 in sequence. When the liquid passes through the busbar direction water flow channel bottom groove 1 23 with the maximum depth and length, a negative pressure is formed at the divergent gap inside it. When the negative pressure reaches a certain limit value, cavitation occurs, forming cavitation bubble groups 27. These cavitation bubble groups gradually expand as the liquid continues to flow and eventually burst, generating high-pressure, high-temperature, powerful shock waves and high-speed microjets, thereby breaking the wall of the liquid to be broken. Although there is a certain pressure drop and energy loss at the bottom groove 24 of the busbar direction water flow channel, the bottom groove 3 25 of the busbar direction water flow channel and the bottom groove 3 26 of the busbar direction water flow channel, by controlling the depth and length of the bottom grooves of the busbar direction water flow channel to gradually decrease, it is ensured that the same negative pressure is formed at the divergent gaps of the bottom groove 24 of the busbar direction water flow channel, the bottom groove 3 25 of the busbar direction water flow channel and the bottom groove 3 26 of the busbar direction water flow channel, and corresponding cavitation bubble groups 28, 29, 30 are formed, thereby producing the same cavitation effect, such as Figure 5 shown.

[0041] See also Figure 5 like Figure 4 As shown, on the outer surface of the inner conical movable plate body 17, a plurality of annular circumferential water flow channels are evenly spaced from the bottom of the drainage cone 18 to the bottom of the inner conical movable plate body 17. The central axis of each circumferential water flow channel is collinear with the central axis of the inner conical movable plate body 17, and the bottom surface of the circumferential water flow channel is flush with the bottom surface of the generatrix direction water flow channel 22 and has the same depth. Figure 4 Only three circumferential water flow channels are shown, namely circumferential water flow channel 1 31, circumferential water flow channel 2 32, and circumferential water flow channel 3 33. All circumferential water flow channels are connected to all busbar direction water flow channels 22.

[0042] Multiple circumferential water flow channel grooves 34 are uniformly arranged along the circumference of the bottom surface of each circumferential water flow channel. A circumferential water flow channel groove 34 is circumferentially located between two adjacent generatrix water flow channels 22. Therefore, the circumferential flow channel grooves 34 are circumferentially staggered with the generatrix water flow channels 22. The design of the circumferential flow channel grooves 34 creates negative pressure areas during liquid flow, encouraging gas to precipitate and form tiny bubbles. Simultaneously, the circumferential flow channel grooves 34 cause the liquid to change direction and lose kinetic energy, increasing the liquid's kinetic energy and creating conditions for pressure changes in subsequent areas. As the liquid passes through the circumferential flow channel grooves 34, the groove shape and movement facilitate bubble formation, providing the foundation for subsequent cavitation. The generated bubbles may collapse in high-pressure areas during flow, generating high-pressure, high-temperature, powerful shock waves and high-speed microjets, effectively removing impurities from the liquid. Furthermore, the circumferential flow channel grooves 34 alter the liquid flow direction, causing variations in kinetic energy and pressure between the liquid and gas in different areas, further promoting the occurrence of cavitation.

[0043] The structures of multiple circumferential water flow channel grooves 34 on the same circumferential water flow channel are the same, and the depth and length of the circumferential water flow channel grooves 34 on different circumferential water flow channels in the direction from top to bottom gradually decrease to ensure that the same negative pressure is formed at different grooves, thereby producing the same cavitation effect.

[0044] For each water flow channel and each groove on the outer surface of the inner conical movable plate body 17, a corresponding number and structure of protrusions are provided on the inner surface of the outer conical movable plate body 16, such as Figure 6 The outer conical movable plate body 35 is matched with the structure on the outer surface of the inner conical movable plate body 17, that is, it matches the drainage cone 18, the busbar direction water flow channel 22, the bottom groove of the busbar direction water flow channel, the circumferential direction water flow channel, and the circumferential direction water flow channel groove 34 respectively, and a gap for the water flow channel is left between them. After matching, the gap between the outer conical movable plate body 16 and the inner conical movable plate body 17 is uniform and the same.

[0045] like Figure 6As shown, when the liquid to be broken through the circumferential water channel groove 34 of the circumferential water channel 1 31, the water channel gap is composed of the circumferential water channel 1 31, the outer conical movable disc protrusion 1 35, and the conical movable disc circumferential groove 34. This allows the liquid to maintain a negative pressure within a small volume even after one or more cavitations, resulting in kinetic energy loss. This ensures that the pressure in the negative pressure zone is lower than the saturated vapor pressure of the liquid, generating cavitation bubble groups 36. These cavitation bubble groups 36 release a large amount of energy when they collapse, further purifying and removing impurities from the liquid. Different cavitation effects are generated when the liquid to be broken through the circumferential water channel 1 31, achieving efficient cavitation wall breaking. Therefore, the design of the busbar water channel 22 and the circumferential water channel achieves a multi-stage, efficient cavitation wall breaking effect.

[0046] Magnetic powder 37 and the liquid to be broken are injected into the cavitation cell 2 through the liquid inlet 6. The liquid, containing magnetic powder 37, floods the entire cavitation generator until the liquid level is higher than and submerges the first coil 4-1 and the second coil 4-2. The high-pressure water pump 1 and high-speed drive motor 5 operate, spraying the liquid to be broken simultaneously from the liquid circulation inlets 13 and 14 toward the two rapidly rotating dual-action discs 3. Within the cavitation cell 2, the liquid is centrifugally acted upon by the high-speed rotation of the dual-action discs 3, forming symmetrical, opposing streams. Due to the high-speed rotation of the dual-action discs 3, the liquid is centrifugally driven along the generatrix flow channel 22 and the circumferential flow channel. During this process, the bevel gears cause the dual-action discs 3 on either side to rotate in opposite directions, inducing eddy currents in the liquid and enhancing the agitation effect. The liquid undergoes multiple cross-sectional variations within the flow channel, increasing its velocity. The changing position of the grooves causes pressure changes, which cause gas nuclei to precipitate. When the local pressure falls below the saturation pressure, gas bubbles form, generating cavitation. The liquid collides at a higher speed after flowing out of the channels on both sides. After the water passes through the double-moving disc structure to generate cavitation, it flows out from the edge of the double-moving disc structure with cavitation bubbles. The cavitation bubbles continue to collide with each other to generate cavitation. Such violent collisions lead to stronger physical effects, such as local high temperature, high pressure and shock waves, which help to remove impurities in the liquid and chemical reactions. Thereby improving the efficiency and effect of the liquid treatment process. When the cavitation effect of the liquid to be broken does not meet the requirements, the high-speed drive motor 5 continues to work, driving the wall breaking device to continue rotating. When the cavitation effect of the liquid to be broken meets the requirements, the high-speed drive motor 5 stops working and discharges the cavitated and broken liquid through the liquid discharge port 12. After the cavitated and broken liquid is discharged, new liquid to be broken is injected into the cavitation breaking pool 2 through the liquid injection port 6, and the cycle continues. During the circulation process, liquid continuously enters the dual-moving disc 3 through the liquid circulation inlets 13 and 14. Pressure changes occur in both the radial and circumferential directions of the dynamic disc due to the grooves at the variable cross-section positions. As the pressure decreases, gas nuclei precipitate to form gas bubbles. The water flow carries the bubbles toward the high-pressure area, where they collapse and release a large amount of energy, breaking, crushing, and decomposing the inorganic and organic matter within the liquid, achieving the effect of breaking the walls and removing impurities from the turbid liquid. The grooves on the inner conical dynamic disc 17 and the protrusions on the outer conical dynamic disc 16 cooperate to form cavities of different volumes and shapes. When the dual-moving disc 3 rotates at high speed, different pressure changes occur, achieving multiple different cavitation effects. At the same time, the centrifugal force and fluid dynamics generated by the high-speed rotation of the dual-moving disc 3 are used to carry the liquid out. Water flows out from the edge of the dual-moving disc 3 through the water inlet, carrying with it cavitation bubbles. The cavitation bubbles collide with each other, increasing cavitation efficiency and generating collisions. When the liquid passes through multiple variable volumes and cross-sections in the circumferential direction and the generatrix direction, multiple cavitation effects are generated to form high-temperature, high-pressure, high-speed microjets to crush and decompose impurities such as particles in the liquid, achieving the effect of breaking the wall and removing impurities in the turbid liquid.The multi-stage and multi-channel groove design enables efficient, large-batch and continuous liquid processing.

Claims

1. A high-efficiency collision-type multiphase cavitation generating device, characterized by: The invention has a closed cavitation wall breaking pool (2), wherein a transmission shaft (7), a large bevel gear (8-1), a first intermediate transmission bevel gear (8-2), a small bevel gear (9-1), a second intermediate transmission bevel gear (9-2), two double-moving disc bodies (3) and a plurality of electromagnetic coils are arranged inside the cavitation wall breaking pool (2). The large bevel gear (8-1) and the small bevel gear (9-1) are both coaxially fixed on the transmission shaft (7), and two first intermediate transmission bevel gears (8-2) with the same structure are symmetrically arranged on both sides of the transmission shaft (7) and mesh with the large bevel gear (8-1) on the side close to the large bevel gear (8-1); Two second intermediate transmission bevel gears (9-2) of identical structure are symmetrically arranged on both sides of the transmission shaft (7) and mesh with the small bevel gear (9-1) on the side close to the small bevel gear (9-1); A high-speed drive motor (5) is provided outside the cavitation wall-breaking pool (2), and an output shaft of the high-speed drive motor (5) is coaxially fixedly connected to a transmission shaft (7). Two conical double movable disc bodies (3) of identical structure are symmetrically arranged relative to the small bevel gear (9-1), and the top is a double movable disc body water inlet (15). Each double movable disc body (3) is composed of an outer conical movable disc body (16) and an inner conical movable disc body (17). The outer conical movable disc body (16) is a hollow cone, and the inner conical movable disc body (17) is coaxially sleeved inside. The gap between the outer conical movable disc body (16) and the inner conical movable disc body (17) constitutes a water flow channel connected to the double movable disc body water inlet (15); A tooth groove is formed on the outer surface of the bottom of each outer conical movable disc body (16), and the tooth groove is meshed with the first intermediate transmission bevel gear (8-2) on the same side; the bottom center of the inner conical movable disc body (17) and the central axis of the second intermediate transmission bevel gear (9-2) on the same side are fixedly connected together; The cavitation wall-breaking pool (2) is provided with two liquid circulation inlets (13, 14) and two liquid discharge ports (12) at the bottom, and two liquid injection ports (6) are provided on the top side wall. The two liquid circulation inlets (13, 14) are connected to the water inlet (15) of the double-moving disc body on the same side through a high-pressure water pump on the same side. A first electromagnetic coil (4-1) and a second electromagnetic coil (4-2) are symmetrically arranged on both sides of a transmission shaft (7) in the space between the large bevel gear (8-1) and the top of the cavitation wall breaking pool (2); a third electromagnetic coil (4-3) and a fourth electromagnetic coil (4-4) are symmetrically arranged on both sides of the transmission shaft (7) in the space between the two second intermediate transmission bevel gears (9-2) and the transmission shaft (7); and a fifth electromagnetic coil (4-5) and a sixth electromagnetic coil (4-6) are symmetrically arranged on both sides of the transmission shaft (7) in the space between the small bevel gear (9-1) and the bottom of the cavitation wall breaking pool (2). These six electromagnetic coils are energized and de-energized at intervals, forming a magnetic field in the liquid that can change the distribution and movement of magnetic powder in the liquid.

2. The high-efficiency collision-type multiphase cavitation generating device according to claim 1 is characterized in that: The top of the conical movable disc body (17) is a drainage cone (18) facing the water inlet (15) of the double movable disc body. Three mutually parallel annular grooves are evenly spaced from the top to the bottom on the side wall of the drainage cone (18). The depth of the three annular grooves gradually decreases, and the length gradually shortens from the top to the bottom.

3. The high-efficiency, counter-collision multiphase cavitation generating device according to claim 2, characterized in that: On the outer surface of the inner conical movable disc body (17), a plurality of identical busbar direction water flow channels (22) are evenly arranged at equal intervals along the circumferential direction in the busbar direction from the bottom of the drainage cone (18) to the bottom of the inner conical movable disc body (17), and each busbar direction water flow channel (22) gradually decreases in length, depth, and width along the busbar direction.

4. The high-efficiency collision-type multiphase cavitation generating device according to claim 3 is characterized in that: In the middle of the bottom surface of each busbar direction water flow channel (22), a plurality of water flow channel bottom grooves are provided at equal intervals along the busbar direction. The depth of the water flow channel gradually decreases and the length gradually shortens along the busbar direction.

5. The high-efficiency, counter-collision-type multiphase cavitation generating device according to claim 3 or 4, characterized in that: On the outer surface of the inner conical movable disc body (17), a plurality of annular circumferential water flow channels are evenly spaced from the bottom of the drainage cone (18) to the bottom of the inner conical movable disc body (17), the central axis of each circumferential water flow channel is collinear with the central axis of the inner conical movable disc body (17), the bottom surface of the circumferential water flow channel is flush with the bottom surface of the busbar direction water flow channel (22), and the circumferential water flow channel is connected to all the busbar direction water flow channels (22).

6. The high-efficiency collision-type multiphase cavitation generating device according to claim 5 is characterized in that: A plurality of circumferential water flow channel grooves (34) are uniformly formed on the bottom surface of each circumferential water flow channel in the circumferential direction, and each circumferential water flow channel groove (34) is located between two adjacent busbar direction water flow channels (22) in the circumferential direction; the plurality of circumferential water flow channel grooves (34) on the same circumferential water flow channel have the same structure, and the depth and length of the circumferential water flow channel grooves (34) on different circumferential water flow channels gradually decrease from the top to the bottom.

7. The high-efficiency, counter-collision-type, multi-phase cavitation generating device according to claim 6, characterized in that: The inner surface of the outer conical movable disc body (16) is provided with convex bodies of corresponding number and structure, and the convex bodies are matched with the drainage cone (18), the busbar direction water flow channel (22), the bottom groove of the busbar direction water flow channel, the circumferential direction water flow channel, and the circumferential direction water flow channel groove (34) on the outer surface of the inner conical movable disc body (17), respectively, and the gaps between them are uniform and the same.

8. The high-efficiency, counter-collision-type, multi-phase cavitation generating device according to claim 7, characterized in that: The gap of the water flow channel between the inflow end close to the water inlet (15) of the double-moving disc body and the outflow end close to the bottom end of the double-moving disc body is larger than the gaps of other water flow channels.

9. A method for processing the high-efficiency, counter-collision-type multiphase cavitation generating device according to claim 1, characterized in that: Injecting the liquid to be broken with magnetic powder into the cavitation wall breaking tank (2) from the liquid injection port (6) to submerge the first electromagnetic coil (4-1) and the second electromagnetic coil (4-2); The high-pressure water pump and the high-speed drive motor (5) work simultaneously, and the wall-breaking liquid is sprayed from the two liquid circulation inlets (13, 14) to the two double-moving discs (3) at the same time. The two double-moving discs (3) rotate simultaneously, and the centrifugal force and fluid dynamics bring the liquid out, forming symmetrical colliding water flows and generating cavitation.

10. The processing method according to claim 9, characterized in that: The third electromagnetic coil (4-3) and the fourth electromagnetic coil (4-4) are powered off at the same time, and the first electromagnetic coil (4-1), the second electromagnetic coil (4-2), the fifth electromagnetic coil (4-5) and the sixth electromagnetic coil (4-6) are powered on at the same time to absorb magnetic powder, so that the magnetic powder moves from the center to the surrounding areas; the first electromagnetic coil (4-1), the second electromagnetic coil (4-2), the fifth electromagnetic coil (4-5) and the sixth electromagnetic coil (4-6) are powered off at the same time, and the third electromagnetic coil (4-3) and the fourth electromagnetic coil (4-4) are powered on at the same time to absorb magnetic powder, so that the magnetic powder moves from the surrounding areas to the center; the power-on and power-off states are adjusted cyclically.

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