246 results about "Liquid medium" patented technology

A natural gas filling device reliable in sealing is disclosed. The device is characterized in that the device comprises a liquid filling gun, a liquid receiving component matched with the liquid filling gun and used for filling a gas cylinder with liquid, and a gas returning component communicated with the gas outlet of the gas cylinder; the liquid filling gun is provided with a first outer shell, a first rotating fastener disposed in the first outer shell and connected to the first outer shell and the inner wall of which is provided with a symmetrical spiral groove, a first valve body between the first rotating fastener and the first shell, and a first valve core disposed in the first valve body and containing a liquid inlet and a liquid outlet; and the liquid receiving component is provided with a first shell, wherein the head of the first shell extends into the first rotating fastener and is in sealing match with the tail part of the first valve body, and the periphery of the first shell is provided with a first pivot pin engaged with the spiral groove in the first rotating fastener. The device is convenient in maintenance, replacement and operation of quick-wear parts and convenient to use. The device can be used for other low-temperature liquid media besides LNG and is simple in structure, low in cost, convenient in operation and reliable in sealing.

The present invention provides a composition which is solidified by using a curing agent dissolved in the one-phase liquid composition after the oil phase having a sealing effect is made compatible with a humectant with a desired moisturizing effect. A solid composition, characterized in that it comprises: an oily liquid medium that separates when mixed with water at a 1:1 ratio; an aqueous liquid medium, said aqueous liquid medium being an organic liquid medium other than water, which forms a homogeneous phase when mixed with water at a 1:1 ratio and also forms a homogeneous phase when mixed with said oily liquid medium; an aqueous curing agent soluble in said aqueous liquid medium and gelling and / or curing said aqueous liquid medium, and / or an oily curing agent soluble in said oily liquid medium and gelling and / or curing said oily liquid medium, said oily liquid medium and aqueous liquid medium being gelled and / or cured by the aqueous curing agent and / or oily curing agent, wherein the total amount of said aqueous liquid medium, oily liquid medium, aqueous curing agent and oily curing agent is more than 90% by mass of the composition excluding powder.

This invention relates to a method for preparing hexamethylenediamine by hydrogenation of adiponitrile in the presence of a Raney nickel catalyst, wherein a Raney nickel catalyst modified by treatment with carbon monoxide or carbon dioxide in a liquid medium is used.

The embodiment of the application provides a heat dissipation module and a computing device. It relates to the chip heat dissipation technology field in the computing device. It is mainly used for providing the cross heat exchange between the chips. The heat dissipation module comprises a mixed liquid cavity, a first heat dissipation plate and a second heat dissipation plate. The first heat dissipation plate is arranged on one side of the first chip and is fixedly connected with the first chip. The second heat dissipation plate is arranged on one side of the second chip and is fixedly connected with the second chip. The temperature of the first chip is not equal to the temperature of the second chip. The first heat dissipation plate and the second heat dissipation plate have flow channels. The first heat dissipation plate and the second heat dissipation plate have liquid outlets and liquid return ports which are connected with the flow channels. The liquid outlets and the liquid return ports are connected with the mixed liquid cavity. The flow channels and the mixed liquid cavity are used for flowing liquid medium. The heat dissipation module provided by the application can not only realize the local heat dissipation of the chip, but also realize the remote heat dissipation.

The utility model relates to the intaglio printing technical field, especially an intaglio printing ink tank system of ink temperature convenient to adjust is provided, including temperature regulating device and ink tank, the ink tank includes ink printing tank and temperature regulating tank, the ink printing tank is used for holding ink, the temperature regulating tank is installed in the bottom of ink printing tank, the ink printing tank with temperature regulating tank forms the cavity for accommodating liquid medium together, the temperature regulating tank is installed with temperature regulating coil pipe, the water inlet and return water mouth of temperature regulating coil pipe are worn in the lateral wall of temperature regulating tank, and the water inlet and return water mouth of temperature regulating coil pipe are connected with temperature regulating device respectively, and the circulating pump is equipped in temperature regulating device, temperature regulating coil pipe with temperature regulating device connection becomes circulation loop, temperature regulating device is used for adjusting the temperature of the water that flows through temperature regulating coil pipe, solves the problem that the performance is unstable in the printing process, and ink is influenced by ambient temperature.

The present invention provides a battery cell cleaning apparatus for improving electrolyte impregnation, and a method for preparing a battery cell using same, the battery cell cleaning apparatus comprising: a main body part configured such that at least one battery cell is immersed in a liquid medium accommodated in an internal space; and a vibration part attached to the main body part and configured to generate vibration and transmit the generated vibration to the liquid medium, wherein the vibration part is configured to apply the vibration toward both ends of the battery cell in the length direction through the liquid medium.

This invention relates to an aqueous polyurethane composition comprising: a liquid medium comprising at least one organic liquid having a solubility in water of ≥4 g organic liquid / 100 g water at 25°C, and water; at least one polyurethane polymer compound dispersed in the liquid medium; and optionally at least one coating formulation component. The polyurethane composition further comprises at least one thickener comprising at least one anionic polymer selected from anionic polyacrylamide, anionic polymethacrylamide, anionic polyacrylamide-polymethacrylamide, and / or a mixture of at least two thereof, and optionally, 0 to 0.12% by weight, preferably 0 to 0.05% by weight, more preferably 0 to 0.01% by weight, based on 100% of the total weight of the aqueous polyurethane composition, at least one compound selected from unbound or ionicly bound organic amines, ammonia, or a mixture of at least two thereof, wherein the aqueous polyurethane composition has a pH value ≤ 8.5, and wherein the at least one thickener is different from the at least one coating formulation component and the at least one polyurethane polymer. The present invention further relates to a kit-of-parts for preparing a waterborne polyurethane composition, a method for preparing a waterborne polyurethane composition, and the use of the waterborne composition.

This invention provides a crushing device and self-cleaning method for aluminum ash recycling, relating to the field of aluminum ash recycling technology. The crushing device includes a housing, a rotor rotatably disposed within the housing, hammers mounted on the rotor, and a grate screen disposed below the hammers' rotation path within the housing. The device includes a bracket, multiple grate bars mounted on the bracket, and multiple spacers positioned between adjacent grate bars. The side walls of the grate bars have slots for accommodating the ends of the spacers. Upper and lower chambers are located within the slots surrounding the ends of the spacers. Upper and lower pipelines, communicating with the upper and lower chambers, are located within the grate bars and are connected to different pressure control systems, which control the entry and exit of liquid media into and out of the pipelines and the pressure of the liquid media. The self-cleaning method includes: the liquid media circulating in the upper and lower pipelines heating the grate screen; the expansion and contraction of the upper and lower chambers causing the spacers to jump; and the expansion of the upper and lower chambers fixing the spacers. This invention can automatically heat the screen to dry materials clogging or adhering to it, shaking off the material to achieve self-cleaning.

This invention discloses a method for inducing and culturing burdock stem cells and stem cells, belonging to the field of plant biotechnology. Using burdock roots as explants, the cambium is determined by staining, and the cambium is obtained using enzymatic digestion. The cambium is then inoculated into a specific ratio of induction solid medium and cultured in the dark to efficiently induce primary stem cells. These primary stem cells are then transferred to a proliferation solid medium for subculture and selection to obtain and maintain a vigorous, soft stem cell line. The solid stem cell line is further transferred to a liquid medium for shaking culture to establish a suspension stem cell line. This invention provides high induction efficiency, stable stem cell characteristics, and good reproducibility, offering a high-quality starting material and technical platform for in vitro preservation of burdock germplasm, large-scale production of secondary metabolites, and genetic transformation.

The utility model discloses an embodiment relates to a pump liquid device, especially relates to a medium mixing spare, gas -liquid mixing subassembly, pump liquid device and washing machine, and medium mixing spare includes: bottom plate, at least two cavity and mixing chamber, bottom plate sets up at least two medium entry hole, at least two medium discharge hole, each cavity and mixing chamber all are arranged on the bottom plate, each cavity is used for receiving gas or liquid medium respectively, and at least one cavity received medium is different with other cavity received medium, and each cavity is also used for conveying gas or liquid medium to medium pump out mechanism through at least one medium discharge hole respectively. Compared with prior art, medium mixing spare not only can realize the mixing of multiple gas and / or liquid medium by multiple cavity and mixing chamber, but also simple structure has the advantage of facilitating the miniaturization of pump liquid device, thereby laying the foundation for greatly reducing the volume of washing machine, cleaning agent machine and other liquid outlet equipment.

Silk protein-based composite, vehicle seat, and associated manufacturing method. The present invention relates to a composite complex (10) comprising at least one substrate layer (20) and at least one coating layer (30) applied to the substrate layer (20), the substrate layer (20) being a fabric. The coating layer (30) is a gel formed from silk proteins, the silk proteins being obtained by fermentation of at least one microorganism in a liquid medium. Figure for the abstract: Figure 1

This invention provides a catheter assembly and a medical device. The catheter assembly includes a tube body assembly, a shock wave generating assembly, and a gas-permeable liquid-blocking device. The tube body assembly forms a first receiving cavity, and the cavity wall of the first receiving cavity has a liquid inlet for supplying a liquid medium into the first receiving cavity. The first receiving cavity has a distal cavity wall away from the liquid inlet. The shock wave generating assembly is disposed within the first receiving cavity and located at the distal end of the first receiving cavity. The shock wave generating assembly is used to generate a shock wave in the liquid medium within the first receiving cavity. The gas-permeable liquid-blocking device is disposed on the distal cavity wall and is used to separate the gas in the first receiving cavity from the liquid medium, and to discharge the gas in the first receiving cavity so that the liquid medium fills the first receiving cavity. Thus, the catheter assembly has a smaller radial dimension to pass through relatively narrow positions, and effectively improves the effect of the shock wave and the stability of the catheter assembly when generating the shock wave.

This invention provides a composition for energy storage devices that, by improving the dispersibility of conductive additives such as CNTs, enables the manufacture of electrodes for energy storage devices with excellent adhesion, reduced internal resistance, and superior input / output characteristics as well as excellent charge / discharge cycle characteristics. The composition for energy storage devices of this invention contains a polymer (A), a conductive additive (B), and a liquid medium (C). When the total number of repeating units contained in the polymer (A) is set to 100% by mass, the polymer (A) contains 1 to 50% by mass of repeating units (a1) from aromatic vinyl compounds and 20 to 75% by mass of repeating units (a2) from unsaturated carboxylic acid esters. The viscosity of an 8% NMP solution of the polymer (A) is 300 to 5000 mPas.

This utility model relates to the field of heating system technology, and in particular to a coupled solar and air energy heating system, including a compressor, a water-side heat exchanger, a liquid storage tank, an evaporator, and a photovoltaic panel. The liquid medium output end of the water-side heat exchanger is connected to the liquid medium input end of the liquid storage tank, and the liquid medium output end of the liquid storage tank is connected to the liquid medium input end of the evaporator. The liquid medium output end pipe of the evaporator passes through the bottom of the photovoltaic panel and contacts the photovoltaic panel. This coupled solar and air energy heating system solves the shortcomings of the prior art where the photovoltaic panel can only dissipate heat through itself.

This invention provides a catalyst regeneration energy recovery heat pump system, belonging to the field of heat pump technology. An external air channel connects to a coke-regeneration system via a heat source regenerator. The coke-regeneration system has a flue gas channel connecting to the outside via a high-temperature heat exchanger and a heat source regenerator. An external gas channel connects to a compressor, a high-temperature heat exchanger, a high-temperature expander, a high-temperature steam generator, and a low-temperature steam generator. A heater connects to the low-temperature steam generator via a booster pump. The heater connects to an evaporator via a throttling valve. The evaporator connects to the low-pressure port of an ejector. The low-temperature steam generator connects to the high-pressure port of an ejector. The ejector connects to the heater via a second compressor. An external liquid medium pipeline connects to the high-pressure port of a second ejector via a second booster pump and a high-temperature steam generator. An external heated medium channel connects to the low-pressure port of the second ejector via the heater. The second ejector connects to the outside. The evaporator also has a low-temperature heat medium channel connecting to the outside, forming a catalyst regeneration energy recovery heat pump system.

This invention discloses a method and apparatus for preparing high-purity arsenic in an anhydrous liquid medium at high temperatures, belonging to the field of molten salt electrochemistry. The method uses a low-melting-point, highly stable calcium chloride (CaCl2)-based molten salt as the electrolyte, directly dissolving or dispersing calcium arsenate powder in the molten salt. Electrolysis is carried out under an inert atmosphere, with the electrolysis temperature controlled between 650-950℃. Arsenate ions (AsO4) are present at the cathode. 3‑ The arsenic is directly reduced to elemental arsenic. Because the operating temperature is much higher than the boiling point of arsenic (614℃), the elemental arsenic instantly vaporizes into arsenic vapor (As₄(g)) and escapes from the molten salt. The arsenic vapor is transported to a condensation system via a carrier gas, where it condenses into solid high-purity arsenic in a low-temperature zone of 200-300℃ for collection. Oxygen is released from the anode through an oxygen ion oxidation reaction. This invention achieves the direct conversion of stable arsenate into high-value-added, high-purity arsenic. The process is short, energy-efficient, and produces high-purity products, providing a novel pathway for the high-value utilization of arsenic-containing waste.

The application provides a visible light band optical fiber SPR liquid refractive index linear measurement device and method, the device comprises a broadband light source, a first lens and a second lens, a polarizer, a third lens and a fourth lens, a pinhole, a fifth lens, an optical fiber SPR, a sixth lens, a diffraction grating, a concave mirror, a linear array CCD and a data processing unit; the data processing unit is used for extracting the resonance wavelength corresponding to the normalized light intensity minimum value from the wavelength-intensity spectrum curve, and calculating the refractive index of the liquid medium to be measured according to the linear relationship between the refractive index and the resonance wavelength which is calibrated in advance. The device is not only intuitive in optical path debugging and easy to operate, but also has a rigorous theoretical model and high measurement precision, and is very suitable for rapid and accurate refractive index screening and analysis of a large number of low-concentration liquid samples, and has wide application prospect and industrial value.

The present invention is directed to a personalized in vitro immune response simulation system, including: a plurality of containers, each container including a culture of tissue-specific cells and endothelial cells in fluid contact with the tissue-specific cells; a liquid medium comprising at least about 25% serum or serum replacement (SR); immune cells suspended in the liquid medium; and a linkage system establishing fluidic coupling between the plurality of containers, allowing the liquid medium to flow through the linkage system, wherein the system is an isogenic system. The present invention further provides methods for preparation of such a system, and for uses thereof.

This invention discloses a gas-liquid detection device, method, and system based on the near-field load characteristics of an ultrasonic transducer, belonging to the field of underwater state monitoring and ultrasonic sensing technology. The device includes: an ultrasonic transducer that emits ultrasonic vibrations and receives near-field electroacoustic response signals; an excitation circuit that applies a pulse excitation signal to the ultrasonic transducer; an acquisition circuit that acquires near-field free oscillation signals at both ends of the ultrasonic transducer within a preset time window after the excitation ends; and a signal processing module that extracts time-domain feature parameters from the acquired near-field free oscillation signals, compares the extracted feature parameters with a preset threshold, and outputs a state indicator indicating whether the ultrasonic transducer is currently in a gaseous or liquid medium. The time-domain feature parameters are used to characterize the amplitude or attenuation characteristics of the near-field free oscillation signal. This invention requires only a single ultrasonic transducer, eliminating the need for a reflective surface or dual transducers, and has advantages such as simple structure, strong anti-interference capability, fast response speed, low power consumption, and high detection accuracy.

The present application belongs to the field of graphite material precision machining, and particularly relates to a graphite taper hole compound machining system and process. The system comprises: an automatic milling device, which performs automatic milling machining on graphite workpieces installed in a clamp groove to process a prefabricated taper hole with a size allowance on the graphite workpiece; a secondary dust collection device, which performs secondary dust collection on the inside of the clamp groove; an electric spark machining device, which performs electric spark precision machining forming on the prefabricated taper hole; a workbench, which supports the clamp groove when machining the taper hole and is arranged across the automatic milling device, the secondary dust collection device and the electric spark machining device; a clamp groove, which is a groove body structure and internally installed with a clamp for clamping the graphite workpiece; a clamp groove walking mechanism, which drives the clamp groove to walk on the workbench and automatically switch between the devices; and a liquid injection device, which injects liquid medium for electric spark machining into the clamp groove. The present application can realize full automation through one-time clamping and can guarantee machining quality and control pollution.

The application is suitable for the technical field of valve control, and provides a swing valve with controllable flow, which comprises a valve body, a power generation assembly, a swing shaft, an orifice plate flowmeter, a valve clack and a storage battery, an annular insert block is installed in the valve body, a rotating support is fixedly connected to the lower part of the annular insert block, the rotating support is hingedly connected with the swing shaft through a rotating arm, the swing shaft is connected with a first electric rotary cylinder, and the swing shaft is detachably installed with the valve clack. The valve clack comprises a middle body, a left clack, a right clack, a second electric rotary cylinder and a stud, the bottom of the middle body is provided with a wedge-shaped buckle, an electric telescopic cylinder is installed in the valve body, and the telescopic buckle of the electric telescopic cylinder can be matched with the wedge-shaped buckle; the left clack and the right clack are rotated under the driving of the respective second electric rotary cylinder, and the stud clamps or loosens the left clack and the right clack when rotating. The application can switch the flow by controlling the number and angle of the opening of each part, the flow switching has five modes, and the flow of liquid medium can be accurately controlled.

The application discloses a low-pressure boiler system utilizing high-temperature flue gas heat exchange, which comprises a flue gas heating furnace wall, a liquid medium bin in the flue gas heating furnace wall, and heated liquid medium filled in the liquid medium bin; a plurality of flue gas heat exchange pipes are transversely arranged in the liquid medium bin and are parallel to each other and are uniformly distributed at intervals, the plurality of flue gas heat exchange pipes jointly form a flue gas heat exchange pipe array, and the flue gas heat exchange pipe array is immersed in the heated liquid medium in the liquid medium bin; the two ends of the liquid medium bin are respectively connected with a liquid medium leading-in pipe and a liquid medium leading-out pipe; in the flue gas heat exchange pipe array, any three flue gas heat exchange pipes adjacent to each other are recorded as a heat exchange pipe combination unit; the enclosed area between the three flue gas heat exchange pipes of any heat exchange pipe combination unit forms a liquid medium heat exchange enhancement tunnel extending along an axial direction; and a plurality of heat exchange enhancement cages are equidistantly arranged in each liquid medium heat exchange enhancement tunnel along the length extension direction. The output supply stability of the hot liquid medium is improved.

This invention relates to an automatically leveling suspension system and a wide-body dump truck, belonging to the field of mining new energy vehicle technology. Specifically, it includes: a power unit configured to provide pressurized liquid medium to the suspension system; a hydraulic control unit, connected to the power unit, configured to control the flow direction and velocity of the liquid medium; an actuator, a retractable structure, located between the chassis and body of the mining vehicle, connected to the hydraulic control unit, configured to support the weight of the vehicle body and adjust the left-right height difference; a monitoring unit configured to monitor the angle data between the vehicle body and the horizontal direction in real time; and a system control unit electrically connected to the power unit, hydraulic control unit, and monitoring unit, configured to acquire and process the angle data and control the operation of the power unit and hydraulic control unit. This invention solves the problem of automatic battery swapping failure in unmanned wide-body dump trucks due to the left-right tilt angle of the vehicle body.

The present application provides a catalyst regeneration energy recovery heat pump system, belonging to the technical field of heat pump. The outside has an air channel connected with an internal combustion engine through a compressor and a high-temperature heat exchanger, and has a fuel channel connected with the internal combustion engine. The internal combustion engine has a gas channel connected with the outside through a high-temperature steam generator and a low-temperature steam generator. A second compressor is connected with a heat supplier. The heat supplier is connected with the low-temperature steam generator through a booster pump and is connected with an evaporator through a throttle valve. The evaporator is connected with a jet pump low-pressure port. The low-temperature steam generator is connected with a jet pump high-pressure port. The jet pump is connected with the second compressor. A liquid medium pipeline is connected with the second jet pump high-pressure port through a second booster pump and the high-temperature steam generator. A heated medium channel is connected with the second jet pump low-pressure inlet through the heat supplier. The second jet pump is connected with the outside. The internal combustion engine has a cooling medium channel. The high-temperature heat exchanger has a high-temperature heat medium channel. The evaporator has a low-temperature heat medium channel connected with the outside, forming an energy-carrying internal combustion engine combined cycle heat pump system.

This invention discloses a culture medium for Antrodia camphorata mycelium, which consists of two parts: a solid medium and a liquid medium. The liquid medium contains glucose, peptone, anhydrous magnesium sulfate, and plant hormones; the plant hormones include one or more of indolebutyric acid, lignin, gibberellin, 6-benzylaminopurine, and 24-epibrassinolide. The solid medium contains carrot powder, potato powder, glucose, and agar powder; the solid medium also contains plant hormones, including one or more of indolebutyric acid, lignin, gibberellin, 6-benzylaminopurine, and 24-epibrassinolide. During cultivation, activated mycelium is first inoculated onto the solid medium to form high-quality colonies, and then inoculated onto the liquid medium for further expansion. This method significantly increases mycelium yield and the production of crude polysaccharides and crude triterpenes, providing strong technical support for the development and utilization of Antrodia camphorata.

The application discloses a recycling method of micro-fiber glass wool waste, which comprises the following steps: (1) wet pretreatment: the micro-fiber glass wool waste is put into a liquid medium, and is stirred to be fully soaked and preliminarily dispersed; then, ultrasonic treatment is carried out; filtration, drying, and glass fibers are obtained; (2) high-temperature melting separation: the glass fibers are mixed with glass raw materials, heated to 1300-1500 DEG C and kept for 1-2 hours; cooling, separation, and lower transparent glass blocks are reserved; (3) component recovery remelting: the transparent glass blocks are mixed with glass raw materials, and are subjected to sufficient melting and homogenization treatment; cooling, and recycled glass blocks are obtained. The recycling method of the micro-fiber glass wool waste can remove impurities and recover components through wet pretreatment, melting separation and component recovery, and can realize high-quality recycling of the glass wool waste; and on this basis, CFD simulation optimization of dust removal pipelines can be supplemented, so that the energy efficiency in the recycling process is improved.

This utility model discloses an inverted drainage pump with improved self-priming performance, comprising a pump cover component, a pump casing component, and a rotor-impeller assembly. The impeller cover of the impeller body component has an impeller suction port at its center, with blades extending into the axial projection position of the impeller suction port, and the blades forming an inclined portion at the axial projection position of the impeller suction port. The rotor chamber of the pump casing component is equipped with an exhaust channel connecting to the outside. When water enters through the inlet of the pump cover component, the air in the rotor chamber of the pump casing component is driven by pressure and discharged to the outside along the exhaust channel. This utility model mainly solves the problem of how to improve the self-priming performance of an inverted drainage pump. When the liquid medium is sucked into the impeller chamber, the air retained in the rotor chamber is driven by pressure and discharged to the outside along the exhaust channel, resulting in a higher negative pressure in the impeller chamber and rotor chamber, thereby improving the self-priming performance of the inverted drainage pump.

The application provides an ablation system, comprising: a medium storage device for storing liquid medium; a plurality of probes, each of which is provided with an air inlet channel and an air return channel; a liquid inlet module provided with a gas-liquid separation device, the gas-liquid separation device comprising a gas pipeline and a plurality of liquid pipelines, wherein each of the liquid pipelines is respectively in communication or isolation with the air inlet channel of each of the probes; a heat exchange module provided with a heat exchanger, the heat exchanger being in communication with the air return channel to convert the liquid medium conveyed in the air return channel into gaseous medium; and a control module electrically connected with each of the probes and the heat exchange module, the control module acquiring the temperature of each of the probes and controlling the flow Q2 of the gaseous medium flowing out of the heat exchange module. The ablation system of the application greatly reduces the time for the probe temperature to drop to the minimum temperature, and improves the work efficiency.

The present application provides a kind of key enzyme activity and microorganism of multiple Daqu combined rapid detection method and kit, belong to Daqu fermentation process quality control technical field.The method includes multiple key enzyme activity of Daqu and Daqu microbial content detection, based on " multi-enzyme co-extraction-microscale color-detection of whole board", efficient detection technology, with pH4.6 acetic acid-sodium acetate as extraction medium, only one extraction treatment can be applied to saccharifying power, liquefying power, protease activity three enzyme activity detection single enzyme extract of Daqu sample, and on this basis, the detection condition is optimized, and the detection time is significantly shortened;In addition, the method also develops to realize the technology of " one operation, synchronous growth, synchronous detection " of multiple microorganisms, by introducing targeted inhibition strategy, for different core microorganisms of Daqu, optimization of selective liquid medium, add appropriate antibacterial peptide, realize the one-time synchronous culture of multiple strains, simultaneous detection, improve detection efficiency.

The present invention provides an actuator that can easily adjust the electrostatic stress acting between electrodes. [Solution] The actuator comprises an insulating flexible bag that forms a housing, a liquid dielectric filled inside the flexible bag, a plurality of electrodes arranged on the inner circumferential surface of the flexible bag whose separation distance changes according to the applied voltage, an expansion section in which the liquid dielectric present between the electrodes flows in and expands in volume when the separation distance between the electrodes decreases, and a separator inserted between the electrodes. The separator is in the form of a film with its front and back surfaces facing the electrodes and has through holes that penetrate in the thickness direction. As a result, the applied voltage is directly applied to the capacitor portion where only liquid dielectric is filled between the electrodes, and by adjusting the relative permittivity of the liquid dielectric, the amount of charge induced between the electrodes can be adjusted accordingly.