73results about How to "High cavitation efficiency" patented technology

The invention utilizes a multiple frequency ultrasound generator driving a multiple frequency harmonic transducer array to improve cleaning and processing effects while eliminating damage to parts being cleaned. An AC switch and circuitry to modify the output of an ultrasound generator in combination with techniques such as random AM and FM signals are used to produce ultrasound waves that have no single frequency components which eliminates exciting parts being cleaned into resonance. Generator signals that increase cavitation efficiency and that have successive time periods with predominately stable cavitation and predominantly transient cavitation further improve the performance of the cleaning or processing systems.

The invention relates to the technical field of hydrodynamic cavitation, in particular to a cavitation reactor. The cavitation reactor comprises a power device, a hydrodynamic cavitator and a water tank, wherein a plurality of Venturi type through holes are formed in each cavitation plate on the hydrodynamic cavitator, that is, hole reaming structures are arranged at two ends of each through hole, accordingly, the sectional area of each flow channel becomes small when water flows into the through holes in the cavitation plates from cavitation pipes, the water velocity is increased, and the water flow pressure is reduced; when the water flow pressure is decreased under the saturated vapor pressure of water, cavitation happens, cavitation bubbles are formed, then, the cavitation bubbles flow out of the cavitation plates with the water flow, the water pressure rises, the cavitation bubbles break, shock wave and microjet are formed at the moment the cavitation bubbles break, and high temperature and high pressure are generated. Compared with an existing straight-hole cavitation plate, the cavitation effect is better, and the cavitation efficiency is higher; a plurality of cavitation plates are connected together stage by stage and uniformly distributed in the cavitation pipes, the multi-stage cavitation reactor is formed, the energy utilization rate is greatly increased, and the cavitation effect is improved.

The invention discloses a reverse circulation aerodynamic cavitation method for a coalbed methane well and equipment. The reverse circulation aerodynamic cavitation method comprises the following steps of: arranging wellhead equipment on a wellhead and sinking a working pipe to a bottom hole; clearly eliminating rock coal dust and water inside the well by using an air compressor in a circulating way; then lifting the working pipe upwards and injecting air / foam by using the air compressor and a supercharger, wherein the air injecting pressure is 3-15 MPa; meanwhile continuously injecting atomized water into the well with the water injecting amount of 3.0-5.0 m<3> each time; opening a hydraulic flat plate gate valve for discharging; after discharging, sinking the working pipe to a coalbed part; injecting the air simultaneously by the air compressor and the supercharger; meanwhile injecting water / foam with the amount of 3.0-10.0 m<3> by using an injection pump for washing the well to thebottom hole; after completing one cycle of discharging and well washing, detecting initial data; closing the air compressor, the supercharger, the injection pump and the hydraulic flat plate gate valve to enable gas inside the well to return freely; measuring the change of gas output of coalbed gas in one hour by using a flow meter; and placing a torch at a discharge port to ignite the gas. The invention improves the construction safety, improves the yield of single well coalbed gas, and saves the construction cost.

The invention utilizes a multiple frequency ultrasound generator driving a multiple frequency harmonic transducer array to improve cleaning and processing effects while eliminating damage to parts being cleaned. An AC switch and circuitry to modify the output of an ultrasound generator in combination with techniques such as random AM and FM signals are used to produce ultrasound waves that have no single frequency components which eliminates exciting parts being cleaned into resonance. Generator signals that increase cavitation efficiency and that have successive time periods with predominately stable cavitation and predominantly transient cavitation further improve the performance of the cleaning or processing systems.

The invention discloses a multi-impellor rotary vane type hydrodynamic cavitation generator and a hydrodynamic cavitation method. The multi-impellor rotary vane type hydrodynamic cavitation generator comprises a box body and a cavitation mechanism. The box body is used for containing liquid, the bottom end of the front side of the box body is provided with a liquid inlet, and the top end of the back side of the box body is provided with a liquid outlet. The liquid inlet and the liquid outlet are correspondingly arranged at the two ends of the diagonal of the box body. The cavitation mechanism comprises a rotating shaft and a plurality of impellors. The rotating shaft is installed in the center of the interior of the box body and driven by an outer-arranged motor. The impellors are coaxially installed on the rotating shaft, and each impellor is composed of a plurality of vanes. The vanes are provided with penetrating through holes. The multi-impellor rotary vane type hydrodynamic cavitation generator has the advantages of being low in energy consumption, high in cavitation efficiency and the like.

The invention relates to a hydrodynamic cavitation generating device which comprises a support unit, a driving unit and a cavitation generating unit, wherein the driving unit is arranged on the support unit; the cavitation generating unit is arranged on the support unit and driven by the driving unit; the cavitation generating unit comprises a container and a rotor, wherein a cavity is formed in the container, the rotor is a current limiting device and is arranged in the cavity, and the rotor can be driven to rotate by the driving unit.

The invention discloses a venturi tube based high-flux hydraulic cavitation reactor and a hydraulic cavitation method. The reactor comprises a cylindrical cavity, a plurality of fluid inlet pipes, an annular porous plate, a fluid outlet pipe and a venturi tube structure. The fluid inlet pipes are uniformly arranged at the outer edge of the cylindrical cavity, the annular porous plate is coaxially arranged in the cylindrical cavity, the fluid outlet pipe is arranged at the axis position of the cylindrical cavity, and the venturi tube structure is arranged on the fluid outlet pipe. The hydraulic cavitation method includes steps: fluid enters a cavity between the annular porous plate and the outer wall of the cylindrical cavity along the fluid inlet pipes; the fluid penetrates the annular porous plate; after the fluid passes through the annular porous plate, a great quantity of cavitation bubbles are generated, and a strong cavitation phenomenon is generated by convergence and collision of cavitation fluid at the center of the cylindrical cavity; treated fluid enters an expansion section through the fluid outlet pipe and gradually recovered in pressure along with expansion of a flowing passage, and the cavitation bubbles collapse again to form micro jet flow and shock wave to generate instantaneous local high temperature and instantaneous high pressure. The venturi tube based high-flux hydraulic cavitation reactor and the hydraulic cavitation method have advantages of high flux and high cavitation efficiency.

The invention discloses a Venturi tube-based hydrodynamic cavitation generating device and method. The device comprises a spherical chamber having an inner spherical cavity, a plurality of fluid inlet pipes are arranged uniformly in the lower half of the spherical chamber and is communicated with the spherical chamber, the axes of the fluid inlet pipes pass through the center of the spherical chamber and form same angles with the plane, orifice plates are arranged in the fluid inlet pipes, a fluid passes through the orifice plates and produces bubbles, when the fluid is injected to the lower half of the spherical chamber, the fluid is gathered and mixed and collides so that the cavitation bubble collapse and regeneration process is further promoted and cavitation strength is improved. A Venturi tube structure as a fluid outlet is communicated with the spherical chamber and is arranged right above the spherical chamber and the axis of the Venturi tube structure passes through the center of the spherical chamber. In the Venturi tube structure, cavitation bubbles are regenerated and then are collapsed to form microjets and shock wave so that the local high temperature and instantaneous high pressure are produced. The Venturi tube-based hydrodynamic cavitation generating device has large flux and high cavitation efficiency.

The invention utilizes a multiple frequency ultrasound generator driving a multiple frequency harmonic transducer array to improve cleaning and processing effects while eliminating damage to parts being cleaned. An AC switch and circuitry to modify the output of an ultrasound generator in combination with techniques such as random AM and FM signals are used to produce ultrasound waves that have no single frequency components which eliminates exciting parts being cleaned into resonance. Generator signals that increase cavitation efficiency and that have successive time periods with predominately stable cavitation and predominantly transient cavitation further improve the performance of the cleaning or processing systems.

The invention discloses a floating type suction and cavitation combined ozone water treatment device and belongs to the field of sewage treatment. The floating type suction and cavitation combined ozone water treatment device comprises a calibration gauge, a water taking pipe, a flap valve, an ozone generation device, a gas flow meter, a liquid stop valve, an ozone introduction pipe, a suction and cavitation combined ozone reaction region, a water pump, a liquid flow meter, a water outlet pipe, a shower nozzle, an outlet water remaining box and a carrier, wherein the suction and cavitation combined ozone reaction region comprises a cavitation generator, an equal-diameter cavitation section and an observation chamber. According to the floating type suction and cavitation combined ozone water treatment device disclosed by the invention, algae water with different depths in different water regions can be treated, so that sewage is mixed with ozone after the sewage generates a hydraulic cavitation effect; and the efficiency of sewage treatment is greatly improved, and the utilization rate of the ozone is greatly increased.

The invention discloses a device for degrading dye wastewater through hydrodynamic cavitation in combination with an oxidizing agent. The device comprises a stator, a cavitation cavity is formed inside the stator, rotating shafts are installed on the two sides of the stator, wheel discs are fixedly installed the ends, located in the cavitation cavity, of the rotating shafts, the ends, extending out of the stator, of the rotating shafts are connected with transmission devices, cavitation holes are formed in the peripheries of the wheel discs and the inner walls of the cavitation cavity respectively, a liquid feeding pipe and an oxidizing-agent feeding pipe are arranged at one end of the stator, and a discharging pipe is arranged at the other end of the stator. According to the device, two rotors are driven by the two transmission devices to perform relative-high-speed rotation, cavitation holes in the rotors and dye wastewater perform relative movement, and therefore a cavitation phenomenon is caused; cavitation efficiency is improved, the treating capacity of degrading organic matter in dye waste liquid is large, and the device can conduct continuous operation and has effectiveness.

The invention discloses a cavitation jet cleaning cavitator. The cavitation jet cleaning cavitator comprises a pump and a shell, wherein a cavitation channel is arranged in the shell, and the pump iscommunicated with the inlet of the cavitation channel; the cavitation channel comprises a plurality of Venturi tube cavities which are sequentially connected in series, wherein the inlet section of the first grade of Venturi tube cavity is communicated with the inlet of the cavitation channel, the throat section of the final stage of Venturi tube cavity is communicated with the outlet of the cavitation channel, and a diffusion section is also arranged between the throat section of the final stage of Venturi tube cavity and the outlet of the cavitation channel; and an axial flow turbine is mounted at the inlet section of the first grade of Venturi tube cavity, and blades of the axial flow turbine are provided with through holes penetrating through the blades. The cavitation effect is enhanced by utilizing multiple stages of Venturi tube cavities and the through holes in the blades, and the water flow is accelerated by the axial flow turbine so as to ensure that cavitation bubbles arriveat a cleaning region in time; cleaning is performed through the energy generated when the cavitation bubbles collapse, so that the cavitation efficiency is improved; and the pumping pressure requiredby cleaning can be effectively reduced, and the energy consumption can be reduced.

The invention discloses a processing method of organic ammonia nitrogen waste water, which is used for processing the high-concentration organic ammonia nitrogen waste water generated during the production of an ADC foaming agent. The method adopts a synergistic action technique of intermittent ultrasonic waves and hydrogen peroxide and comprises the following steps: a. increasing waste water temperature, and regulating the pH value of the waste water; and b. degrading the waste water under the synergistic action of the intermittent ultrasonic waves and the hydrogen peroxide. The invention enhances the cavitation effect of the ultrasonic waves, optimizes the reaction mass transfer, reduces the ultrasonic processing energy consumption of the organic waste water and enhances the elimination efficiency of organic ammonia nitrogen.

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.

The invention discloses an embedded-type perforated plate section device of a waterpower cavitation reactor, which is characterized by comprises a waterpower cavitation generation device and a square fracture surface observation section. The waterpower cavitation generation device is an embedded-type perforated plate which is provided with a beam hole, a clamping groove is arranged at the inlet position of the observation section, and the perforated plate is embedded in the clamping groove. Organic glass bringing convenience in observation are arranged on two sides and the top of the observation section, a movable steel plate is arranged at the bottom of the observation section, and a plurality of pressure holes capable of colleting pressure of each measure point in real time are arranged on the steel plate. An upstream section of the observation section is connected with a circular square joint, and a downstream section of the observation section is connected with a circular square joint. The embedded-type perforated plate section device is simple in structure, small in material consumption, and convenient in operation. Simultaneously, a perforated plate structure is exposed in an organic glass observation window, so that the embedded-type perforated plate section device is favorable for observation of a cavitation peocess.

The invention relates to a cavitation organic pollution degradation device provided with a dismountable pore plate. The device comprises a pipe, wherein the pipe comprises a pipe water inlet section and a pipe water outlet section, a cavitation pore plate is arranged between the pipe water inlet section and the pipe water outlet section, a plurality of through holes are formed in the cavitation pore plate, and the pipe water inlet section and the pipe water outlet section are communicated by the through holes. Compared with existing pore plate cavitation, the device has the advantages that thestructure is simple, welding is not needed, dismounting is convenient, blockage is cleared at any time, and cavitation efficiency is high.

The invention relates to an ultraviolet ray and cavitation oxidation synergistic water disinfection device. The device comprises a stator, a rotor, a rotating shaft, ultraviolet ray emitters, an oxidant conveying device and ultrasonic transducers, the stator is a sealed cylinder, the ultrasonic transducers are arranged on the inner wall of the stator, the ultraviolet ray emitters are arranged on the end surfaces of the two sides of the stator, a water outlet and a water inlet are formed in the end faces of the two sides of the stator respectively, one side of the water inlet is connected with an oxidizing agent conveying device, the rotating shaft is installed in the stator, the rotor is located in the stator and installed on the rotating shaft, blades are distributed on the rotor, cavities are formed in the blades, and cavitation through holes are distributed in the blades and located in the two opposite sides of the cavities. According to the device, water is treated by efficiently couplingfour processes of hydrodynamic cavitation, ultrasonic cavitation, ultraviolet rays and oxidation, the effect is good, the magnifiability is high, the treatment capacity is large, the cost is low, no secondary pollution is generated, continuous operation can be achieved, and therefore the device has wide application prospects in the field of water disinfection.

The invention provides an antibiotic wastewater degradation device coupled with hydraulic, ultrasonic cavitation and oxidation processes. The device comprises a stator, a rotor, an ultrasonic generator and an ultrasonic transducer. The stator is a hollow sealed cylinder, and the ultrasonic transducer extending into an inner cavity of the stator is arranged on the outer wall of the stator; stator cavitation holes are distributed in the inner wall of the stator. Two wheel discs are arranged in the stator, and each wheel disc is fixedly connected to one rotating shaft; the two rotating shafts aresymmetrically installed at the two ends in the stator respectively. Wheel disc cavitation holes are distributed in the circumferential direction and the end face of each wheel disc. One end of the stator is provided with a wastewater inlet pipe and an oxidant pipe, and the other end is provided with a liquid outlet pipe. According to the device, the antibiotic wastewater is degraded by coupling hydraulic power, ultrasonic cavitation and an oxidizing agent, the cavitation energy density is enhanced, the effect of the oxidizing agent is improved, the antibiotic wastewater is degraded efficiently and synergistically, the effect is good, the amplification performance is good, the treatment capacity is large, continuous operation can be achieved, the cost is low, secondary pollution is avoided, and the device has wide application prospects in the field of wastewater degradation.

The invention discloses a cavitation bubble generator. The cavitation bubble generator comprises a main body, wherein the main body is provided with a jet chamber for receiving an external high-pressure fluid, an air chamber for introducing external gas and a first channel for mixing the fluid with the gas; the jet chamber, the air chamber and the first channel sequentially communicate in the fluid flowing direction; a compression section is arranged at one end, close to the air chamber, of the jet chamber; and the compression section is used for compressing the fluid when the fluid flows fromthe jet chamber to the gas chamber. According to the cavitation bubble generator provided by the invention, the cavitation efficiency can be improved.

A device for degrading antibiotics by combining hydrodynamic cavitation with ultrasonic cavitation and photolysis technology comprises a hydrodynamic cavitation and ultrasonic cavitation combined reaction chamber and a photolysis reaction chamber, and the two reaction chambers are connected by a connecting pipe with a control valve; a rotor is arranged in the hydrodynamic cavitation and ultrasoniccavitation combined reaction chamber; the rotor comprises a central cylinder and a satellite body; the satellite bodies are distributed on the periphery of the center cylinder and connected to the center cylinder. The central cylinder body is fixed on the rotating shaft; cavitation holes are uniformly distributed in the inner wall of the hydrodynamic cavitation and ultrasonic cavitation combinedreaction chamber and the outer surfaces of the central cylinder and the satellite body; an ultrasonic generation device is arranged on the inner wall of the hydrodynamic cavitation and ultrasonic cavitation combined reaction chamber, a water inlet pipe is arranged at the upper part of the hydrodynamic cavitation and ultrasonic cavitation combined reaction chamber, and an ultraviolet lamp is arranged in the photolysis reaction chamber. The device adopts hydrodynamic cavitation and ultrasonic cavitation to degrade the antibiotic wastewater, can realize repeated cyclic treatment, has a good treatment effect, does not generate secondary pollution, and ensures the optimal cavitation effect.

The invention discloses a hydraulic cavitation generating device and a hydraulic cavitation generating method. The device comprises a spherical chamber and a plurality of fluid inlet pipes, wherein the spherical chamber is internally provided with a spherical cavity; the plurality of fluid inlet pipes are evenly arranged at the lower half part of the spherical chamber and are communicated with the spherical chamber; the axes of all the fluid inlet pipes pass through the center of the spherical chamber, and the included angles formed between the fluid inlet pipes and the horizontal direction are the same as one another; the fluid inlet pipes are respectively and internally provided with an orifice plate; fluid begins to generate bubbles after passing through the orifice plates; when being sprayed into the lower half part of the spherical chamber, the fluid is enabled to be converged, mixed and collided, so that the collapse and regeneration process of cavitation bubbles is further promoted, and the cavitation intensity is further enhanced. The hydraulic cavitation generating device has the beneficial effects of being large in flux and high in cavitation efficiency.

The invention discloses an integrated antibiotic wastewater degradation device based on hydraulic power and ultrasonic cavitation. The device comprises a stator, a rotor, a wireless ultrasonic transducer, an ultrasonic probe and a rotating shaft, wherein the stator and the rotor are sealed cylinders, the two ends of the stator are respectively provided with a waste water inlet and a water outlet,the inner wall of the stator is provided with an ultrasonic probe, the rotor is arranged in the stator, a rotating shaft is arranged in the stator and penetrates through the stator and the rotor, therotor is fixedly connected to the rotating shaft, and cavitation blind holes are distributed in the outer side wall of the rotor; according to the method, the antibiotic wastewater is degraded by adopting a method of combining hydrodynamic cavitation and ultrasonic cavitation, the efficiency and quality are far higher than those of single hydrodynamic cavitation or ultrasonic cavitation, and the method has high efficiency and large water treatment capacity and can be used for continuous operation; the device is not influenced by the external environment, has high flexibility and can be startedand stopped at any time as required; the device is simple in structure, high in adaptability, convenient to operate, safe, reliable and convenient to maintain.

The invention discloses a hydrodynamic ultrasonic cavitation and advanced oxidation coupled degradation device for sulfide wastewater. The device comprises a stator, a rotor, a rotating shaft and an ultrasonic transducer, the stator is a sealed cylinder, the ultrasonic transducer is installed on the inner wall of the stator, a liquid inlet and a liquid outlet are formed in the two sides of the stator respectively, an oxidizing agent injection device is arranged on one side of the liquid inlet, the rotating shaft is installed in the stator, one end of the rotating shaft extends out, the rotor is located in the stator and fixedly installed on the rotating shaft, blades are distributed on the circumference of the rotor, cavities are formed in the blades, and through holes are distributed in the two sides of each cavity. Sulfide wastewater is conveyed into the stator after being precipitated, an oxidizing agent is conveyed into the stator through the oxidizing agent conveying pipe and mixed with the wastewater, treatment is conducted through the cavitation technology, and degradation of organic matter is achieved. According to the device, hydrodynamic cavitation, ultrasonic cavitation and an advanced oxidation technology are combined to synergistically degrade the sulfide wastewater, the treatment efficiency is high, the treatment effect is good, and continuous operation can be realized.

The invention relates to a coarse particle fluidized bed column separation kinetic analysis device and method, belongs to the technical field of mineral processing and resource recovery, and solves the problem that fluidized bed column separation kinetic analysis is difficult to systematically develop. The device comprises a fluidized bed column, a filling medium, a slurry supply unit, a water supply unit and a gas supply unit, the fluidized bed column comprises a barrel body, the filling medium is arranged in the barrel body, the volume of the filling medium is reduced from bottom to top in a layered mode, the slurry supply unit comprises a slurry mixing barrel and a first conveying pipeline, and the first conveying pipeline is communicated with the slurry mixing barrel and the top of the barrel body; and the water supply unit is communicated with the air supply unit and then communicated with the lower part of the barrel body. According to the invention, the multi-element and multi-scale filling medium is adopted to disperse fluid and assist fluidization, and is limited between the two screens, so that the use amount of clear water and materials is reduced, a fluidized bed column separation dynamic test is optimized from the aspect of structure, the follow-up wastewater treatment amount of coarse grain mineral fluidized bed column separation of an actual separation plant is reduced, and the production cost is reduced. And the production cost of a selection plant is saved.

The invention provides an angular multi-stage cavitation generator. The angular multi-stage cavitation generator comprises a casing, a first-stage cavitation sleeve, a second-stage cavitation sleeve,a third-stage cavitation sleeve, a sealing ring and a bottom cover, wherein the first-stage cavitation sleeve, the second-stage cavitation sleeve, the third-stage cavitation sleeve are sequentially installed inside the casing from the outside in, a plurality of first-stage cavitation generating holes, a plurality of second-stage cavitation generating holes and a plurality of third-stage cavitationgenerating holes are distributed on the wall surface of the first-stage cavitation sleeve, the wall surface of the second-stage cavitation sleeve and the wall surface of the third-stage cavitation sleeve uniformly and separately, and the inlet of the casing communicates with the outlet of the casing through the cavitation generating holes; each cavitation generating hole comprises a front section, a diffusion section and a column, each diffusion section is a conical hole, and the conical angle direction of each conical hole is gradually expanded in a liquid flowing direction; and the conicalangle of each conical hole is 45-75 degrees. The angular multi-stage cavitation generator has a simple and compact structure, and through the structure of the multi-stage cavitation sleeves, organic pollutants in sewage can be treated and degraded efficiently, and therefore the angular multi-stage cavitation generator has broad development space and a broad application prospect.

A two-stage sulfide wastewater degradation device based on hydrodynamic cavitation comprises a cavitation jet pipe and a reaction cavity, one end of the cavitation jet pipe is provided with a liquid inlet and an oxidizing agent channel, the other end of the cavitation jet pipe is provided with a nozzle, a throat part is arranged between the liquid inlet and the nozzle in the cavitation jet pipe, and a conical incidence section is arranged between the liquid inlet and the throat part. A conical ejection section is arranged between the nozzle and the throat part, a reaction cavity is formed in the reaction cavity, one end of the nozzle of the cavitation jet pipe is connected with the reaction cavity, the nozzle is located in the reaction cavity, a fluid changing body is arranged in the reaction cavity, and a liquid discharging opening is formed in the other end of the reaction cavity. According to the device, wastewater and an oxidizing agent injected by the oxidizing agent channel are mixed at the throat part of the jet pipe, a cavitation effect is generated, and a first-stage cavitation reaction is carried out; the high-speed fluid injected into the reaction chamber from the nozzle impacts the modified fluid, and the secondary cavitation reaction is completed in the reaction chamber, so that the sulfide in the wastewater is efficiently degraded, the treatment effect is good, the treatment capacity is large, and continuous operation can be realized.

A hydrodynamic three-stage cavitation device belongs to the field of fluid cavitation and comprises a water inlet A, a water outlet B, an air inlet C, a pore plate 1, a circular-truncated-cone-shapedpore plate 2, circular truncated cone-shaped pore plate holes 3, a cylinder 4, a first annular hole 5, a baffle element 6, a second annular hole 7, a long rod 8, an end cover 9, a handle 10, a cavitation pipe body 11 and a circular truncated cone-shaped pore plate bottom hole 12. The device is characterized in that the distribution of the circular holes 3 and the shape of the axial section of thebaffle element 6 can be changed, the circular-truncated-cone-shaped pore plate 2 and the baffle element 6 are matched with the long rod 8 and can coaxially move along with the long rod 8, and then thepositions and the strength of the three cavitation fields are changed; the pore plate 1 is provided with an air inlet, and a large number of microbubbles are mixed in water inlet fluid; and enough gas nuclei are provided for three cavitation fields at the downstream. A three-stage cavitation structure is adopted, so that the defect of insufficient cavitation is overcome, and more energy is released; The cavitation device is simple in structure, convenient to operate and low in cost, the cavitation efficiency is effectively improved, and the cavitation device has very considerable developmentand application prospects.

The invention discloses a bismuth tungstate photocatalyst preparation device based on hydrodynamic cavitation and ultrasonic cavitation. The bismuth tungstate photocatalyst preparation device comprises a stator, an ultrasonic cavitation transducer, a rotor and a rotating shaft, wherein the stator is a closed cavity, ultrasonic transducers are distributed on the inner wall of the stator, a feedingpipe is arranged at the upper end of the stator, a discharging pipe is arranged at the lower end of the stator, the rotor is arranged in the stator and fixedly connected with the upper end of the rotating shaft, the rotating shaft is vertically installed in the stator, the lower end of the rotating shaft extends out of the stator, and grooves are distributed in the outer wall of the rotor. According to the device, the bismuth tungstate preparation reaction is strengthened at room temperature through efficient coupling of hydrodynamic cavitation and ultrasonic cavitation phenomena, and the reaction of raw materials is accelerated under extremely high-temperature and high-pressure conditions generated by the cavitation effect; shock waves, micro-jet flow and other phenomena generated by thecavitation effect can greatly change the surface appearance of the generated catalyst and increase the specific surface area, so that the catalytic performance is improved; and the device has the advantages of large treatment capacity, continuous operation and low cost, and has a wide application prospect in the field of nano-catalyst preparation.

The invention discloses a cavitation and microwave coupled milk protein concentrate treatment device. The device comprises a stator, a rotor, a rotating shaft, microwave generators and ultrasonic transducers, the stator is a sealed cylinder, the ultrasonic transducers are distributed on the inner wall of the stator, the microwave generators are arranged on the end faces of the two sides of the stator, a liquid outlet and a liquid inlet are formed in the two sides of the stator respectively, the rotating shaft is installed in the stator, the rotor is located in the stator and fixedly installed on the rotating shaft, blades are distributed on the rotor, cavities are formed in the blades, and cavitation through holes are formed in the blades and locatedon the two sides of the cavities. Fresh skimmed milk is sterilized and disinfected and then mixed with other nutrients required for preparing milk powder, the mixture is conveyed into the device, the viscosity of the concentrated milk protein is synergistically reduced through efficient coupling hydrodynamic cavitation, ultrasonic cavitation and microwave treatment, and a powder product is obtained after output and drying. The whole process is good in effect, good in magnification, large in treatment capacity, low in cost, capable of continuously operating and free of secondary pollution. The viscosity reduction treatment is carried out on the concentrated milk protein liquid by using a cavitation technology.

The invention provides an antibiotic wastewater deep degradation device based on hydrodynamic cavitation. The device comprises a stator and rotors, the stator is a hollow sealed cylinder, and rotatingshafts are installed at the two ends of the interior of the stator; a plurality of rotors are mounted on each rotating shaft and are of wheel disc structures; the two rotating shafts rotate oppositely in opposite directions; blind holes are distributed in the end surface of the rotors and the inner wall of the stator; cavitation grooves are formed in the circumferential direction of the rotors; amicro gap formed by the blind holes, the cavitation grooves, the rotor wall surface and the stator wall surface forms a current limiting structure so that a current limiting effect is achieved, and the cavitation phenomenon is enhanced; one end of the stator is provided with a feeding pipe, and the other end is provided with a discharging pipe. The two rotors rotate at a relatively high speed sothat cavitation holes in the rotors move relative to the antibiotic wastewater, and the cavitation phenomenon is caused. The method adopts hydrodynamic cavitation to degrade organic matters in the antibiotic wastewater, has the advantages of high efficiency, good magnification, large treatment capacity, continuous operation, low cost and no secondary pollution, and has wide application prospects in the field of wastewater degradation.