197results about How to "Improve cavitation effect" patented technology

A centrifugal pump adapted to excite a high-intensity sound wave in a fluid feedstock is disclosed. The impeller and stator of the pump are provided with multiple apertures sized and spaced to produce a sound wave of an intensity greater than one megawatt per square meter in the fluid. The sound wave forms cavitation bubbles in the fluid, and the static pressure in the pump combines with the compression cycle of the sound wave to collapse the bubbles at a rate sufficient to cause exothermic reactions in the fluid. The sonic reactor can be configured for use to produce thermal energy, oil refining, catalyst production, water desalination and other uses.

The invention relates to an online broadband ultrasonic wave sewage treatment unit, belonging to the technical field of sewage treatment equipment and aiming at providing an improved ultrasonic wave sewage treatment unit with better effect; the technical proposal includes that: the sewage treatment unit is composed of a reactor, a sedimentation tank and a frequency converter tube, wherein the frequency converter tube is mounted in the reactor, an interfering plate is mounted between the outer circumference of the middle part of the frequency converter tube and the inner wall of the reactor, diffraction circular holes are evenly distributed on the interfering plate, the lower end of the frequency converter tube is mounted with a pressure jet nozzle, the pressure jet nozzle is connected with an ejector and a high pressure water pump, the bottom part of the reactor is provided with a planar reflection plate, a high frequency energy transducer and a low frequency energy transducer are mounted on the planar reflection plate, the sedimentation tank is mounted around the circumference of the reactor, the lower part and middle part of the reactor are respectively provided with a return port and an overflow port communicated with the sedimentation tank, and a water outlet is arranged on the upper part of the sedimentation tank. The online broadband ultrasonic wave sewage treatment unit has the advantages of wide ultrasonic wave bandwidth, increased amplitude, further improving cavitation effect, full reaction of atomized sewage and ozone and air, wide application range, high efficiency and economy and practicality.

The invention provides an underwater cavitating jet cleaning system. The system is provided with a cleaning fluid autoweighing feeder, and a cavitating jet technology is organically combined with theimprovement on cleaning fluid so that jet bubbles can be increased, and hull dirty can be easily removed. A spiral channel is formed in the eddy section of a jet nozzle, and the eddy section is gradually decreased in the direction from a water inlet to a water outlet, so that the fluid velocity is further increased; the in-pipe cavities of a gun pipe are different in size, so that the fluid flowsthrough the inside of the pipe in a pulse mode, finally the fluid jetted from the jet nozzle of a cleaning gun is jetted in a pulse mode, the cavitation rate is effectively improved, and more cavitation nucleus are generated. A hollow rotation shaft of a cleaning disc is provided with a glow guide channel, a plurality of arc-shaped strips are arranged on the wall of the flow guide channel, the hollow rotation shaft jets the fluid downwards, and the fluid applies repulsion acting force on the cleaning disc, so that the cleaning disc is easily floated in water.

The invention provides an ultrasonic mechanical damage and thermal coagulation device and method based on double-frequency con-focal ultrasonic time-sharing excitation. High-low-frequency ultrasonic waves or low-high-frequency ultrasonic waves are sequentially transmitted by controlling a double-array-element annular con-focal power ultrasonic transducer in a time-sharing working mode or the ultrasonic transducer and phase-change micro-nano liquid drops are combined in use to achieve the purpose of improving ultrasonic mediated visco-elastic medium mechanical damage and thermal coagulation efficiency.

The invention discloses a metal electrodeposition device which comprises an electrodeposition tank and a power supply. An electroacoustic transducer system emitting ultrasonic waves parallel or perpendicular to the electric field direction to electrolyte during electrodeposition is arranged on the outer side of the electrodeposition tank, a magnetic pole N and a magnetic pole S for applying the magnetic field parallel or perpendicular to the electric field in the electrolyte during electrodeposition are arranged on the outer side of the electrodeposition tank and are distributed on two sides of the electrodeposition tank correspondingly. The intensity B of the magnetic field applied in the electrolyte by the magnetic pole N and the magnetic pole S ranges from 0.5 to 1.0T. A mixer used for mixing the electrolyte during electrodeposition and a heating system used for keeping the temperature of the electrolyte in the electrodeposition tank stable are arranged in the electrodeposition tank. In the process of metal electrodeposition of a cathode, the ultrasonic waves, the power and the magnetic field jointly act on the electrolyte by selecting the direction of the ultrasonic waves to coordinate and couple with the direction and the intensity of the power and the magnetic field, so that speed and density of electrodeposition are increased.

The invention discloses a multifunctional tea leaf cleaning machine which comprises a support, a water tank, a plurality of ultrasonic generators, a bubble generating pipeline, an air compressor, a slide bar, a lifting cylinder and at least one bucket. The water tank is mounted on the support, the ultrasonic generators are mounted in the water tank, a stirring roll is mounted in the water tank, a motor is connected to an end of the stirring roll, the air compressor is positioned below the water tank, the bubble generating pipeline is mounted in the water tank, the air compressor is connected with the bubble generating pipeline by an air delivery pipe, a cleanser storage tank is mounted on the support and is connected with the water tank by a liquid delivery pump, the slide bar is mounted on the support and is positioned above the water tank, a slider is mounted on the slide bar, a slide motor and the lifting cylinder are mounted on the slider, and the buckets are connected onto the lifting cylinder. The multifunctional tea leaf cleaning machine has the advantages that cleaning effects can be effectively improved, pesticides and other pollutants on the surfaces of tea leaves can be effectively removed, the tea leaves can be automatically discharged after being completely cleaned, and accordingly the cleaning efficiency can be improved.

The invention relates to an integrated rotary cavitating jet nozzle comprising a cylindrical inlet segment, a cylindrical resonant cavity, a cylindrical pore and a cylindrical outlet segment. The cylindrical outlet segment is provided with a plurality of intake tubes; bores of the intake tubes are tangent to a bore of the cylindrical outlet segment. The inner diameter of the intake tubes is half a difference between the inner diameter of the cylindrical outlet segment and the diameter of the cylindrical pore. The section of the bore of each intake tube is round, square, or in any special shape. The intake tubes can be axially distributed in multiple rows at the cylindrical outlet segment of a nozzle body. Compressed air is led into the intake tubes, the compressed air led in from the intake tubes enters in the tangent direction, air swirls surrounding a water jet are formed in the cylindrical outlet segment and drive the water jet to turn into a rotating vortex in the cylindrical outlet segment, and cavitating effect is further enhanced; meanwhile, cavitating bubbles are concentrated to the center of the water jet, energy of the cavitating water jet is more concentrated, the shear action of the jet upon a target is enhanced, and eroding capacity of the cavitating jet is greatly improved accordingly.

The invention relates to a tandem type hydrodynamic force sound wave generation device. The tandem type hydrodynamic force sound wave generation device is characterized in that the front end of a cavity is provided with a first spray nozzle connected with a fluid pipeline, the back end of the cavity is provided with a second spray nozzle, the center lines of the first nozzle and the second nozzle are on the same straight line, and a divergent reflector is arranged on the outer wall of the second spray nozzle; the first spray nozzle and the second spray nozzle are connected in series through an oval cavity, two spring pieces can be used for generating different sound wave frequencies, and sound waves generated by the second spring piece are reflected by the inner wall of a reflector and then propagate along the divergent reflector, so that the generated sound waves have directivity. In addition, the tandem type hydrodynamic force sound wave generation device has the advantages of strong cavitation effect, high fluid mixing and emulsifying efficiency, simple structure, stable operation and relatively low cost; and as the movable spray nozzles can be changed and adjusted according to practical requirements, the tandem type hydrodynamic force sound wave generation device is suitable for industrialized application.

The invention provides a preparation method of natural plant dye. The method comprises the first step of cleaning, the second step of mixing, the third step of ultrasonic extraction, the fourth step of distillation and the fifth step of filtration. According to the preparation method of the natural plant dye, by means of multi-frequency ultrasonic extraction operation, the mechanical effect, the cavitation effect and the thermal effect of the dye can be greatly enhanced; compared with single-frequency acoustic extraction, the extraction time can be shortened by 40% to 60%, the extraction temperature can be declined by 15 DEG C to 20 DEG C, damage to natural pigments and effective components caused by the temperature is reduced, therefore, the extraction rate is increased, and the quality is improved; due to the fact that optimum induction frequencies of different plant cells are different, according to the preparation method of the natural plant dye, different frequencies can be appropriately adjusted and combined, coextraction of various plants with similar hues can be achieved, the energy sources are saved, and the efficiency is improved. The prepared plant dye is stronger in adhesion effect and pure and elegant in color, the antibacterial and anti-virus effects are achieved, and the plane dye is safe, harmless, natural and environmentally friendly.

The invention relates to a method for processing porous starch through dual-frequency ultrasonic assisted acid hydrolysis, belonging to the field of modified starch processing. The method comprises the steps of: by taking starch (such as corn starch, sweet potato starch, mung bean starch, chickpeas starch and pea starch) as raw materials, preparing starch milk by using a hydrochloric acid solution with a certain concentration, putting the starch milk in a dual-frequency ultrasonic reactor for ultrasonic processing, stirring continuously, stopping ultrasonic after reaction for a certain time, adjusting the pH value to be neutral by using a saturated sodium carbonate solution, repeatedly centrifugal washing, drying, and grinding to obtain a porous starch product. The porous starch provided by the invention has deep and dense pores with uniform pore size, the pore volume accounts for above 70% of the particle volume, and the porous starch is strong in adsorbability, short in production cycle and low in processing cost, and can be widely applied in the fields of foods, medicine and health care, agriculture, paper making, printing, cosmetics, detergents and the like.

The invention relates to a focusing ultrasonic cavitation treatment instrument which is used for treating tumor, thrombolysis, ischemic myocardium and disease of prostate based on the cavitation effect of the ultrasonic contrast agent microvesicle. The focusing ultrasonic cavitation treatment instrument comprises a main control machine, two combined treatment probes, and a B ultrasonic machine with an ultrasonic focusing ultrasonic cavitation treatment instrument function. The focusing ultrasonic cavitation treatment instrument is mainly used for the partial area of the focus, and carries out non-invasive treatment on the tumor based on the cavitation effect of the microvesicle. The microvesicle can greatly improve the cavitation effect, so that the ultrasonic focusing positioning radiation with low power can be precisely carried out in the partial area of the focus, and the cavitation effect of the microvesicle within the vessel just can be activated within the partial area, and the capillaries in the tumor can be subject to embolism and damage, so as to achieve the purpose of 'starving' the tumor. The threshold for generating the cavitation is not met by the ultrasonic energy at the periphery of the focusing area, so that the cavitation effect is not generated, so that the path where the ultrasonic wave passes or the ambient tissue can not be damaged; and the functions of the common tissue and organs are protected.

The invention relates to an ultrasonic cavitation intensifying device and an ultrasonic cavitation intensifying method. The ultrasonic cavitation intensifying device comprises an energy converter and a gas nucleus source. The energy converter is used for converting electric energy into ultrasonic waves, the ultrasonic waves enter liquid through the radiant surface of the energy converter, and then a sound field is formed in the liquid. The gas nucleus source is used for providing gas nuclei for the liquid, cavitation bubbles are formed in the liquid by the gas nuclei generated by the gas nucleus source and the gas nuclei originally existing in the liquid under the action of the sound field, and cavitation cloud is formed through cavitation bubble gathering. According to the ultrasonic cavitation intensifying device, the gas nucleus source can be placed in an ultrasonic field near the radiant surface of the energy converter, a large number of gas nuclei are continuously generated, the cavitation bubbles are formed by the gas nuclei under the action of the sound field, the cavitation cloud is generated, and therefore the cavitation effect is enhanced.

The invention relates to an abalone flesh cleaning apparatus. The abalone flesh cleaning apparatus comprises a frame, the frame is provided with a roller group for conveying abalone flesh, a plurality of first high-pressure nozzles for cleaning the abalone flesh are arranged above the roller group, the end of the roller group is provided with a motor drive mechanism for driving the roller group to rotate, both sides of the roller group are provided with blocking plates for preventing the abalone fresh from falling, the input end of the roller group is arranged under the output end of a roller cleaning machine for the oscillating cleaning of the abalone fresh, and the output end of the roller group is provided with a receiving tank for receiving the abalone fresh. The abalone flesh cleaning apparatus uses ultrasonic coupling ozone water for cleaning abalone mucus and is high in cleaning efficiency, capable of avoiding cross-contamination and high in operability.

The proposed multifunctional hydrodynamic vortex type reactor includes—a housing having curvilinear inner sidewalls,—a base attached to the housing, an inverse taper narrowing downward and attached to the top of housing,—a supporting tube passing at least through the housing and base,—a set of washers tapered downward and mounted on an outer surface of the supporting tube such that outer upper edges of the set of washers and the inner sidewalls form predetermined gaps therebetween, and—a number of inlets tangentially attached to the base for introducing, under external pressure, a solid substance and a liquid (or a suspension of their mixture) thereinto, forming a circulating flow therein. The flow forms a high speed bypassing cavitation zone and, changing its direction at the inverse taper, forms a vortex cavitation zone, providing for mixing and grinding the substance up to nanoscale sizes. Methods for intensifying cavitation are also provided.

The invention discloses a microbubble synergistic dynamic experiment system based on a double frequency superimposed ultrasonic pulse in a viscoelastic medium and a microbubble synergistic dynamic experiment method based on the double frequency superimposed ultrasonic pulse in the viscoelastic medium. The experiment method comprises the following steps 1) according to an actual waveform of a focal region sound field measured by a hydrophone, setting KZK equation parameters and establishing a microbubble nonlinear excitation waveform; 2) constructing a HIFU synergistic model according to viscoelasticity of a biological tissue and vibration characteristics of the microbubble in compressible fluid; 3) establishing a microbubble synergistic dynamic method based on double frequency superimposition; 4) in combination with simulation results of steps above, determining a HIFU waveform phase, sound pressure and frequency parameters to perform a thermal ablation or tissue damage experiment. According to the system and the method provided by the invention, the dynamic characteristics of the microbubble in the biological tissue are used fully to design the sound wave waveform and the phase parameter, maximum vibration of the microbubble is triggered at a focal region, a cavitation effect is enhanced, and safety and efficiency of HIFU thermal ablation and tissue damage are improved.

The invention relates to the technical field of medical ultrasonics, and discloses an ultrasonic transducer and a preparation method thereof. The ultrasonic transducer comprises a housing; a piezoelectric layer is arranged in the housing, and comprises at least two piezoelectric array elements; the frequency space between the two piezoelectric array elements is 50 kHz to 1.2 MHz; and an acoustic lens is arranged at the front end of the piezoelectric layer, and is used for ensuring that the piezoelectric array elements at different frequencies are confocal. The ultrasonic transducer can receiveexcitation signals of two or more frequency components, on the premise of not increasing the power loss, the ultrasonic cavitation effect is enhanced, and the ultrasonic transducer adopting the structure is convenient to prepare and low in cost. The treatment effect can be enhanced, the feasibility is high, and a good treatment effect can be obtained when the ultrasonic transducer is applied to blood brain barrier opening, ultrasonic thrombolysis, ablation treatment, nerve regulation and the like.

The invention discloses a multi-resonance-cavity cavitating jet nozzle which comprises a left end body, a right end body and at least one middle body, wherein the tail end of the left end body is in threaded connection with the first middle body, and the right end body is in threaded connection with the last middle body, thus forming at least three resonance cavities with identical structures; inlets and outlets of the resonance cavities are connected with different stages of necking openings; the tail resonance cavity and a spraying opening are formed in the right end body; the axial lines of the multiple resonance cavities, the different stages of necking openings and the spraying opening are overlapped with the axial line of the nozzle; and a first sine flow guide curved surface and a second sine flow guide curved surface are arranged at the front part of the left end body, so that liquid can quickly and stably enter the nozzle, is severely cavitated through the multiple stages of necking openings and the multiple resonance cavities, and is finally sprayed out from the spraying opening. Compared with the prior art, the multi-resonance-cavity cavitating jet nozzle disclosed by the invention can conform to influx of high-flow high-flowing speed liquid; and the sine flow guide curved surfaces, the multiple resonance cavities and the multiple stages of necking openings enhance the cavitating effect on the liquid and improves the cavitating efficiency.