1274 results about "Ultrasonic device" patented technology

The invention discloses an activated carbon regeneration method based on ultrasonic coupling, and relates to the field of activation and regeneration. The method comprises the following steps: filling activated carbon to be regenerated into a reaction container, adding a target alkaline solution, and placing the reaction container in temperature-controlled ultrasonic equipment for oscillation treatment; adjusting the pH value of the solution in the reaction container, controlling ultrasonic waves to be uniformly distributed, discharging the solution after treatment, and flushing reactants to be neutral; transferring the reactants into an acid corrosion-resistant reactor, adding a preheated acid solution, and placing in double-frequency ultrasonic equipment for oscillation treatment; and cooling the reactor, adjusting the stirring speed, transferring the reactant after monitoring the conductivity to a set value, and carrying out flushing and vacuum drying to obtain regenerated activated carbon. According to the scheme, various pollutants on the activated carbon can be effectively removed, and the adsorption capacity and the specific surface area of the activated carbon are improved.

The invention relates to a pipeline incrustation removing method, system and device, and relates to the field of incrustation treatment, and the method comprises the steps that water meter water pressure in a water meter is obtained; when the water pressure of the water meter falls into a preset incrustation early warning interval, flow velocity information in the water meter is obtained; judging whether incrustation exists or not from a preset incrustation judgment model according to the flow velocity information; when the incrustation exists, the position of the incrustation is recognized from a preset incrustation position recognition model according to the flow velocity information; matching a moving path from a preset moving path matching model according to the scale position; and according to the moving path, a preset ultrasonic device is controlled to move to the scale position, and the scale is shattered through a preset scale shattering method. The water meter has the effects of improving the reading accuracy of the water meter and cleaning scale in time.

Examples of apparatus, methods, and compositions for endodontic treatments are described. The apparatus can include a fluid platform configured to substantially retain fluid in a tooth chamber during treatment. The fluid platform can help maintain fluid circulation in the tooth chamber as fluid flows into and out of the tooth chamber. The apparatus can also include a pressure wave generator configured to generate acoustic waves that can be used for cleaning root canals and tooth surfaces in the tooth chamber. Examples of pressure wave generators include a liquid jet, an electromagnetic energy delivery device, and an ultrasonic device. The fluid can include antiseptic or antibacterial solutions to assist in tooth cleaning. The fluid may be degassed to have a reduced dissolved gas content (compared to non-degassed fluids used in endodontic treatments), which may improve the effectiveness of the pressure wave generation or the cleaning.

The invention belongs to the technical field of acoustic devices and ultrasound, and discloses an ultrasonic transducer, a multi-layer gradient acoustic impedance matching layer and a preparation method of the multi-layer gradient acoustic impedance matching layer, and the multi-layer gradient acoustic impedance matching layer comprises a plurality of acoustic impedance layers which are arranged in sequence and have different acoustic impedances; in the direction from the first acoustic impedance layer to the last acoustic impedance layer, the acoustic impedance of the acoustic impedance layer is in a decreasing trend; the surface of the previous acoustic impedance layer is provided with a micro-columnar structure, the micro-columnar structure extends into the next acoustic impedance layer, a mechanical interlocking interface is formed between the previous acoustic impedance layer and the next acoustic impedance layer through the micro-columnar structure, and the micro-columnar structure is gradually thinned from the bottom to the tip. According to the invention, the gradient impedance design of the acoustic impedance layers significantly reduces the acoustic reflection between the acoustic impedance layers, improves the acoustic energy transmission efficiency, and widens the working bandwidth of the ultrasonic device; the micro-columnar structure not only maintains the stability of interlayer adhesion in a high vibration or thermal stress environment, but also further smooths gradient transition and reduces interface reflection.

The invention provides an intermittent ultrasonic enhanced micro-nano bubble fruit and vegetable cleaning and disinfecting method, which comprises the following steps: introducing an active oxygen solution and gas into a micro-nano bubble generator, and placing a water inlet and a water outlet of the micro-nano bubble generator in the same cleaning pool; placing fruits and vegetables to be treated in the cleaning pool, starting the micro-nano bubble generator, and applying intermittent periodic ultrasonic treatment to the cleaning pool by using an ultrasonic device so as to clean and disinfect the fruits and vegetables to be treated. According to the method, micro-nano bubbles, ultrasound and active oxygen are combined, the method can be efficiently used for sterilizing the surfaces of fruits and vegetables, and the sterilizing effect on natural flora on the surfaces of the fruits and vegetables can reach 99.99%. Meanwhile, the combination of the three can also significantly inhibit browning of the fruits and vegetables, and has no negative influence on the quality (such as hardness and chromaticity) and nutritional ingredients of the fruits and vegetables.

The invention provides a blood vessel puncture system and method based on handheld ultrasonic equipment, and relates to the technical field of puncture guidance, and the method comprises the steps: obtaining a real-time ultrasonic image of a to-be-punctured part of a patient by the handheld ultrasonic equipment, and recognizing a blood vessel boundary and a center line in the real-time ultrasonic image; calculating to obtain an optimal puncture route according to the blood vessel boundary and the center line, and then adjusting the needle point position of a puncture needle of a puncture positioning device of the handheld ultrasonic equipment according to the optimal puncture route to perform blood vessel puncture. The handheld ultrasonic equipment has the beneficial effects that the puncture positioning device is additionally arranged in the handheld ultrasonic equipment, and the image acquisition module and the puncture module are configured, so that the problem that a traditional system depends on experience and manual operation skills of medical personnel and is easily influenced by human factors is solved; compared with a robot auxiliary system, the system has very close puncture accuracy and success rate, and the system is low in complexity, low in cost and convenient to carry.

The invention discloses an LPBF additive manufacturing system and method based on ultrasonic vibration and laser remelting, and the system comprises a control device which is used for setting process parameters and a process route, generating a user input parameter instruction, and transmitting the user input parameter instruction to a motion control card; the mechanical device is used for controlling the lifting of the powder cylinder and the working cylinder through a driving device and controlling the cyclic operation of powder feeding and returning of the scraper; the laser device is used for completing laser remelting under the assistance of ultrasonic vibration; the ultrasonic device is used for transmitting ultrasonic waves to a workpiece on the sintering disc through an ultrasonic concentrator and carrying out ultrasonic vibration assistance; the dust removal and passivation device is used for filtering micro powder generated in the laser cladding process, oxidizing the outer surface of the metal micro powder and passivating the metal micro powder; and the atmosphere device adopts argon as atmosphere gas. According to the method, ultrasonic vibration after powder laying and ultrasonic vibration assisted laser remelting are achieved in the LPBF process, the defects existing in the traditional LPBF process are overcome, and a novel and effective technology is provided for additive manufacturing.

The utility model discloses a heater with a cleaning device, the heater is provided with a heating pipe, the cleaning device comprises a dry ice spraying device, the spraying opening of the dry ice spraying device faces the heating pipe, and the dry ice spraying device is used for spraying dry ice to the heating pipe; the output end of the ultrasonic device faces the heating pipe, and the output end of the ultrasonic device transmits ultrasonic waves into the dry ice medium sprayed by the dry ice spraying device. According to the utility model, stains are cleaned in a manner of spraying dry ice and superposing ultrasonic waves, the dry ice can effectively remove oil stains and impurities at low temperature, chemical solvents are not needed, the environment is not polluted, residues are not generated after sublimation, and the cleanliness of the heater is ensured; and high-frequency vibration of the ultrasonic waves can not only vibrate out stains in gaps of the heater, but also promote the reaction between the dry ice and the stains, so that the cleaning effect of the cleaning device is further improved.

The invention provides an ultrasonic driving circuit, an ultrasonic radar and a vehicle, and relates to the technical field of ultrasonic devices. The capacitor is connected with the power supply module, and the capacitor is also used for being connected with the ultrasonic transducer; the power supply module is used for charging the capacitor; the capacitor is used for providing a positive pressure driving signal and / or a negative pressure driving signal for the ultrasonic transducer; wherein the detection ranges of ultrasonic waves emitted by the ultrasonic transducer driven by the positive pressure driving signal and the negative pressure driving signal are different. According to the invention, the detection distance of the ultrasonic wave emitted by the ultrasonic transducer can be increased, and the integration area of the whole ultrasonic drive circuit is not increased.

The invention provides a bolt monitoring method and device based on electromagnetic ultrasound and a 3D phased array, and relates to the technical field of bolt monitoring. A two-stage detection process is adopted, firstly, preliminary screening is conducted through electromagnetic ultrasound, an electromagnetic ultrasound device excites ultrasonic waves and receives echo signals, and according to the relation between the intensity of the echo signals and the passing time, a 3D phased array is obtained; constructing a time-intensity curve of each detection section, and rapidly screening candidate sections with abnormal echo signals; the method comprises the following steps: performing comprehensive three-dimensional space scanning on a candidate section through a 3D phased array technology, performing accurate scanning in a three-dimensional space through focused ultrasonic waves to obtain an ultrasonic echo signal of each space point, extracting the ultrasonic echo signal intensity of each space point and calculating a standardized deviation to mark an abnormal point exceeding a set threshold value, and finally marking the abnormal point. And through spatial aggregation analysis, a plurality of abnormal points are aggregated into an abnormal region, so that the defect positioning precision is further improved.

Cleaning equipment of a roller cleaner comprises a cleaning box, the cleaning box is provided with a cleaning tank and a precipitation tank which are arranged side by side and separated from each other, and an ultrasonic device is arranged at the bottom of the cleaning tank; end spaces are arranged at the two ends of the cleaning tank and the two ends of the precipitation tank, and bearing seat supports are arranged in the end spaces. A driving system is further arranged in the end space located at one end of the cleaning tank and used for driving the roller cleaner to rotate in the ultrasonic cleaning process. The two bearing seats are used for rotatably supporting the roller cleaning device, and the roller cleaning device is placed on the bearing seat supports at the two ends of the cleaning tank or the two ends of the precipitation tank through the bearing seats at the two ends. The cleaning time of the roller cleaner is greatly shortened, cleaning dead angles are eliminated, and the cleaning effect is improved.

The invention discloses a lock body cleaning device and method based on fingerprint lock machining, and relates to the technical field of lock body cleaning devices.The lock body cleaning device comprises a cleaning cabinet body, a cleaning box is fixedly connected to the interior of the cleaning cabinet body, an ultrasonic device is arranged in the cleaning box, and the lock body cleaning device further comprises a containing frame arranged in the cleaning box; a lifting fixing plate is arranged at the top of the cleaning cabinet body, and a driving assembly used for driving the lifting fixing plate to ascend and descend is arranged on the outer side of the cleaning cabinet body. The cleaning liquid in the cleaning box is vibrated, the transmission part is started, the transmission part drives the cleaning part to move left and right in the cleaning box, stains on the surface of the lock body are cleaned, when the placing frame ascends, a partition plate isolates foam and oil stains on the top of the cleaning liquid, and when the placing frame ascends, the cleaning liquid is separated from the cleaning part. And oil stains and foam cannot be adhered to the lock body in the placing frame, so that the lock body is cleaned, and the cleaning effect is improved.

According to the invention, the ultrasonic device for skin treatment comprises an external part which is composed of a device body, the middle part of the device body is provided with an indicating lamp for indicating the operation state of the device, a switch for turning on and turning off the device and a mechanism part, and the mechanism part is composed of energy connected to a circuit control panel. The circuit control panel comprises a short circuit detection circuit, a Bluetooth and / or Wi-Fi receiver and transmitter and a skin temperature monitoring circuit. The circuit control panel transmits current to the electromagnetic electrode and the electrical stimulation muscle electrode ultrasonic transducer, and the ultrasonic transducer is composed of a deeper-focal-length ultrasonic transducer and a shallow-focal-length ultrasonic transducer. Two transducers, each consisting of electrodes, are connected to a piezoelectric material for transmitting electrical energy to the piezoelectric material, and a solid or semi-solid material that can transmit ultrasonic waves for strengthening the ultrasonic waves to a desired skin layer.

The utility model discloses a wafer processing device, and belongs to the technical field of semiconductors. The wafer processing device comprises a carrying table, a shock insulation pad and an ultrasonic device, wherein the carrying table is used for carrying a crystal ingot with a modified layer; the ultrasonic device is arranged above the carrying table, the ultrasonic device can generate transverse vibration waves, and the transverse vibration waves are used for vibrating along the crystal ingot and enabling cracks of the modified layer to extend in the transverse direction; and the bottom of the carrying table is fixedly arranged on the shock insulation pad. According to the utility model, the cracks of the modified layer formed on the crystal ingot by the laser pulse grow and are connected along the transverse direction, the longitudinal growth of the cracks is avoided, the production efficiency of the modified layer is improved, the laser pulse does not need to be intensively emitted, and the wafer processing period is shortened.

According to the anti-blocking adsorption laser operation endoscope and the method, the anti-blocking adsorption laser operation endoscope is installed at the position far away from an endoscope body and an adsorption opening through an adsorption switch, or the adsorption opening is a plane or a curved surface and comprises a structure of at least two open holes and matched size design. Or an ultrasonic device and an installation mode of the ultrasonic device are adopted, so that the probability that the broken stones block the suction channel is greatly reduced, and blockage is prevented, and meanwhile, the stones are continuously reset at the position of the suction port through a method that the suction switch repeatedly and continuously connects and disconnects the suction port and the suction source; therefore, the continuous laser lithotripsy performance during the operation is kept; through the program control of the suction switch of the anti-blocking adsorption laser operation endoscope, the working intensity of an operation doctor during the operation for controlling an instrument is reduced, so that the operation is more convenient and simpler; through the design of the quick-connection type connector of the anti-blocking broken stone adsorption laser operation endoscope component, instrument sterilization is more convenient, function expansion is more flexible, or independent production is arranged; the invention relates to a method for treating human and animal focuses, especially calculi, by using an anti-clogging laser surgery endoscope catheter.

The embodiment of the invention provides an air purifier, a filter screen cleaning method of the air purifier and a medium. The air purifier comprises a filter screen. The first scraping and sweeping device is arranged on the outer side of the filter screen and used for scraping and sweeping the outer side of the filter screen; the ultrasonic device is used for emitting ultrasonic waves to the filter screen, so that the filter screen generates ultrasonic vibration; the second scraping and sweeping device is arranged on the inner side of the filter screen and used for scraping and sweeping the inner side of the filter screen; the dust suction device is used for sucking dust falling from the filter screen; the water spraying device is used for spraying water vapor to the filter screen; and the drying device is used for drying the filter screen after the water spraying device sprays the water vapor to the filter screen. Bidirectional physical cleaning is formed through the first scraping and sweeping device on the outer side and the second scraping and sweeping device on the inner side, dust in the deep layer of the filter screen is loosened and falls off in combination with ultrasonic vibration, the cleaning efficiency is remarkably improved, drying is conducted through the drying device, microorganisms are prevented from breeding in the humid environment, meanwhile, the filtering efficiency of the filter screen is prevented from being affected, and the service life of the filter screen is prolonged.

The invention relates to the field of PCB (printed circuit board) printing, in particular to a high-precision multi-layer lamination and alignment PCB printing process which comprises a substrate pretreatment stage, a substrate preassembly stage, a dynamic lamination stage and a finished product output stage, the dynamic lamination stage comprises preheating treatment and resonance impurity removal treatment, and the lamination stage is divided into multi-stage lamination. And air bubbles and resin between the laminated bodies are optimized in the second pressing stage. According to the method, the inner-layer core plate and the copper foil are pretreated, so that positioning of the multi-layer core plate is more accurate and detection is facilitated, meanwhile, nanoscale micropores are formed in the copper foil through a laser technology to improve the flowing property of subsequent resin, and in the pressing process, pre-pressing and multi-stage pressing are set to improve the pressing accuracy; and in the second-stage pressing process, the dispersion direction of internal bubbles and the flowing direction of resin are improved through an ultrasonic device, a radiation heating device, a magnetic field assisting device and the like, the alignment accuracy and the pressing precision of the plate are further improved, and the machining efficiency is guaranteed.

The invention relates to the technical field of medical instruments, in particular to an electromagnetic ultrasonic device for treating osteoporosis, which comprises a bed body, an electromagnetic ultrasonic probe, a data acquisition module, a data processing module and an artificial intelligence analysis module, an ultrasonic treatment assembly and an electromagnetic treatment assembly are integrated in the electromagnetic ultrasonic probe; the ultrasonic treatment assembly emits ultrasonic waves and transmits the ultrasonic waves to bones through soft tissues for ultrasonic treatment; the electromagnetic treatment assembly generates an alternating electromagnetic field to stimulate bone cells; physiological signal data are analyzed in real time through an artificial intelligence algorithm, physiological state changes are predicted, output parameters of PEMF and LIPUS are automatically adjusted to adapt to individual physiological differences, and personalized treatment is achieved.

An LDED in-situ atmosphere reaction method based on ultrasonic compounding, comprising the following steps: designing a reaction of a forming material and atmosphere components and an area; preparing a powder material; configuring a forming substrate (100), an atmosphere mixing device (400), a powder conveying device (500), an ultrasonic device, and a laser forming device to perform forming processing; controlling the output amount of a protective atmosphere and a reaction atmosphere, and the amount of powder conveying of the powder conveying device (500); melting the material by the laser forming device to form a molten pool (110), and applying ultrasonic waves on the molten pool (110); and moving laser on the basis of a trajectory until a part is formed. By designing a reaction of powder and an atmosphere, reinforcing components are synthesized to enhance a material; ultrasonic waves enhance a reaction of the atmosphere and a melt; the reinforcing components are uniformly distributed; an atmosphere supply amount and the ultrasonic effect are controlled to adjust the atmosphere synthesis reaction effect and the content of components; and the design distribution-based spatial forming of the material components, the microstructure and the performance of a part is implemented in light of a deposition trajectory, thereby achieving dual optimization and enhancement of the structure and the material. The present invention further relates to an LDED in-situ atmosphere reaction apparatus based on ultrasonic compounding.

The present invention discloses a technology for measuring brain function suitable for an infant or a moving subject who cannot be controlled easily during measurement. One embodiment of the present disclosure pertains to an ultrasound device that comprises: multiple ultrasound probes that receive / transmit ultrasound signals from / to multiple brain areas via multiple head regions and are disposed corresponding to the respective head regions; a control unit that controls the respective ultrasound probes; and an image processing unit that generates brain function network information calculated from blood flow states among the respective brain areas based on measurement results acquired from the respective ultrasound probes.

The invention discloses a light and thin wearable ultrasonic device with imaging and efficient power output capabilities and a working method of the light and thin wearable ultrasonic device, and aims to solve the problems that an existing wearable ultrasonic device is large in thickness, low in imaging sensitivity and power output efficiency and serious in heating, and imaging and power output areas do not coincide. The device comprises a front-end package, an ultrasonic transducer array and a rear-end package. The front-end package is made of a flexible material and is in contact with an organism to conduct ultrasonic waves; the ultrasonic transducer array comprises an ultrasonic transducer array element with an impedance reverse matching structure, has the characteristics of being light and thin, and has imaging and efficient power output capabilities at the same time; the rear end package is used for protecting the device and providing an insulation function. According to the device, high coincidence of an imaging area and a power output area is realized by sharing the piezoelectric layer, and power output can be accurately controlled based on a real-time imaging result in combination with a closed-loop control strategy.

The utility model relates to the technical field of ultrasonic devices, in particular to a multi-angle rotating handheld ultrasonic device which comprises an image display module and an image acquisition module, and the image display module is connected with the image acquisition module through a rotating structure; the rotating structure comprises a rotating shaft support, an L-shaped side shaft is arranged on one side of the rotating shaft support, and a T-shaped rotating shaft is arranged in the middle of the rotating shaft support. The L-shaped side shaft is connected with the image acquisition module, and the T-shaped rotating shaft is connected with the image display module. By arranging the rotating shaft support, the L-shaped side shaft and the T-shaped rotating shaft, the image acquisition module and the image display module are integrated, the included angle relation between the image display module and the image acquisition module can be adjusted in the left-right and up-down directions, and multi-angle rotation can achieve the purposes of opening, application, operation and storage in various use scenes.

This invention relates to the field of extraction machine technology, and specifically discloses an ultrasonic extraction machine that can improve infusion efficiency and increase concentration. The machine includes an extraction kettle, a base, and a control panel. The base includes a platform for placing the extraction kettle, and the top and the bottom of the extraction kettle are respectively equipped with a heating component and an ultrasonic component. Both the heating component and the ultrasonic component are connected to the control panel. The invention introduces an ultrasonic device during the heating process, and infuse through a dual structure of heating and ultrasonics, which can greatly improve the speed and increase the concentration of the extraction.

The invention relates to the technical field of pipeline decontamination, in particular to an online pipeline ultrasonic decontamination device and method suitable for various pipe diameters, and the online pipeline ultrasonic decontamination device comprises a numerical control generator, a transducer, an amplitude-change pole, an adaptive clamp, an online monitoring device and other key components. And through the designed adaptive clamp, the device can act on pipelines with various pipe diameters and can move along the pipelines, and the decontamination requirements in different scenes are met. The online ultrasonic decontamination device is suitable for maintenance and cleaning work of pipelines with different pipe diameters in nuclear power facilities, and has important significance in improving the safety of the nuclear facilities and guaranteeing radiation protection for operators. The problem that an ultrasonic device is poor in applicability is effectively solved, meanwhile, the flexibility of the device is guaranteed, effective online decontamination of pipelines with various pipe diameters can be achieved through a single set of device, the decontamination cost of radioactive contamination of nuclear facility pipelines is effectively reduced, online efficient decontamination of radioactive contamination deposited in the pipelines is achieved, and the service life of the pipelines is prolonged. The safe and stable operation of the reactor is ensured, and the radiation risk of operators is reduced.

The present invention provides a method for tenderizing eliminated laying hens with alternating dual-frequency ultrasound, comprising the following steps: pre-treating the breast meat of eliminated laying hens, and then using a tenderizer to perform coordinated ultrasound treatment, to obtain the result; the tenderizer includes calcium chloride and protease; the ultrasound is alternating dual-frequency ultrasound (22 / 40kHz). The ultrasonic device of the present invention adopts a concentric circle arrangement mode of ultrasonic vibrators, which can provide an external uninterrupted alternating dual-frequency ultrasonic physical field for the entire tenderizing process of eliminated laying hens, and maximize the penetration of calcium chloride and protease solution into the deep layer of muscle tissue. The former calcium chloride can increase the ion strength in the muscle, improve the ion distribution, and enhance the water retention of muscle fibers; the latter protease hydrolyzes and refines the muscle fibers, disintegrates the macromolecular protein of the muscle fibers, and reduces the shear force, thereby improving the tenderness of the eliminated laying hens.

According to one embodiment of the present invention, provided is a method for managing the path of a probe by means of digital twinning, the method comprising: a step for determining a digital twinning model corresponding to the body of a patient with reference to a first angle at which the probe of an ultrasonic device comes into contact with a first site of the body of the patient; and a step of determining an angle at which a medical probe of a probe control device enters the first part or the second part of the body of the patient with reference to the digital twin model.

The invention relates to a method and a device for macroscopically preparing graphene by utilizing pulse discharge. The device for macroscopically preparing graphene by utilizing pulse discharge comprises an upper discharge device, a clamping device, an upper graphite electrode, a lower discharge capacitor, a lower graphite electrode, a driving motor, a pulse power supply, a control computer and an ultrasonic device. The invention provides the method and the device for preparing the graphene in the macroscopic quantity by utilizing the pulse discharge, which can overcome the defects in the prior art, enrich the product structure of the electrochemical stripping graphene, expand the preparation condition and simultaneously realize the assembly line macroscopic quantity preparation.

The invention relates to an injection device and method for particles, and the device comprises a liquid environment which is used for placing a carrier, and the particles are attached to the carrier; the special ultrasonic device is located in a liquid environment so as to generate a sound beam current in the liquid environment; the liquid supply flow channel is used for conveying an injection substance into a sound beam of the special ultrasonic device; the special ultrasonic device and the particles can be in a relatively fixed state, and the particles are located in an operable range of a sound beam of the special ultrasonic device, so that the injection substance is injected into the particles through the sound beam. According to the invention, injection aiming at single cells is realized, and particularly quantitative injection can be realized based on pulse type sound beam current.

The invention discloses a laser powder bed melting additive manufacturing system and method based on ultrasonic vibration assistance, and the system comprises a control device which is used for setting process parameters and a process route, generating a user input parameter instruction, and transmitting the user input parameter instruction to a motion control card; the mechanical device is used for controlling the lifting of the powder cylinder and the working cylinder through a driving device and controlling the cyclic operation of powder feeding and returning of the scraper; the laser device is used for completing laser cladding operation; the ultrasonic device is used for transmitting ultrasonic waves to a workpiece on the sintering disc through an ultrasonic concentrator and carrying out ultrasonic vibration assistance; the dust removal and passivation device is used for filtering micro powder generated in the laser cladding process, oxidizing the outer surface of the metal micro powder and passivating the metal micro powder; and the atmosphere device adopts argon as atmosphere gas. According to the method, ultrasonic vibration is achieved in the LPBF process, the defects of pores, incomplete fusion, unfavorable inclusions, cracks and the like in the traditional LPBF process are overcome, and a novel and effective technology is provided for additive manufacturing.

The invention provides a liquid drop continuous generation device which comprises a first flow channel and a second flow channel, the first flow channel and the second flow channel comprise first positions which are tightly attached to each other, and each first position comprises a through hole communicating with the first flow channel and the second flow channel; the first flow channel and the second flow channel are used for introducing a first liquid and a second liquid respectively; the special ultrasonic device can act on the first liquid in the first flow channel, when the special ultrasonic device is driven in a first power period, an acoustic beam current facing the through hole is generated in the first liquid, the acoustic beam current enters the second liquid through the through hole, and liquid drops formed by the first liquid are formed in the second liquid. The invention also correspondingly provides a method for continuously generating liquid drops. The liquid drop generation mode is more flexible, the controllability is higher, and the cost is lower.