342 results about "Liquid drop" patented technology

To provide a droplet forming technology capable of stably sorting a droplet. Provided is a microparticle sorting device provided with a voltage supply unit that supplies a drive voltage to a vibration element that applies a vibration to an orifice that generates a fluid stream, a control unit that controls a driving condition supplied to the vibration element on the basis of a relative relationship between a droplet discharged from the orifice and a satellite droplet present between droplets, and a sorting unit that sorts the droplet containing microparticles on the basis of optical information detected from the microparticles flowing through a flow path.

This invention relates to the technical field of surface lubrication and friction measurement of machinery, and provides an apparatus and method for measuring the energy barrier at the surface solid-liquid interface of a microstructure. [Solution] The apparatus includes a micro-pump, a fixed elbow, a capillary tube, an upper contact surface, a lower contact surface, a droplet, a micro-movement stage, and a high-speed microscope camera. In this method, the micro-pump transports liquid to form a droplet between the upper and lower contact surfaces, the micro-movement stage is used to drag the lower contact surface at a constant speed to slide the droplet, and the high-speed camera monitors the deflection deformation caused by the droplet drag force of the capillary tube, calculates the dynamic drag force, and integrates the drag force-displacement curve to obtain the energy consumed by the droplet to overcome the microstructure. Finally, the solid-liquid interface energy barrier per unit area is obtained, overcoming the limitations of the conventional contact angle method, which cannot measure the dynamic interface energy barrier, and enabling direct and quantitative measurement of the surface solid-liquid interface energy of the microstructure.

A drift elimination system for evaporative heat rejection equipment. The drift elimination system includes a first and second set of electrodes positioned apart from one-another in the air flow downstream of the fill and spray system. The first set of electrodes, optionally in the form of needles or thin plates are energized with a positive or negative charge. The second set of electrodes, optionally in the form of wavy plates or a wire mesh are energized with the opposite charge. Water droplets passing over or through the first set of electrodes accept a charge from the first set of electrodes and are attracted to the second set of electrodes where they are collected, removing the charged droplets from the airflow, reducing water loss and abating plume formation.

This invention relates to the field of fluid control technology and discloses a gas-liquid separation device, comprising a separator housing with a gas-liquid mixture inlet and an exhaust port, and an internal cavity for gas rotation and flow; a coalescing filter structure disposed on the inner wall region of the separator housing, having several through-channels with hydrophilic inner surfaces; a droplet transport structure fluidly connected to the coalescing filter structure, having several capillary channels inside; and a collection chamber for receiving and storing the liquid transported by the capillary channels. This gas-liquid separation device achieves efficient gas-liquid separation and stable liquid transport by using a coalescing filter structure with hydrophilic microchannels on the inner wall of the separator housing to efficiently capture and coalesce fine droplets, combined with a droplet transport structure with capillary channels that utilizes surface tension gradient differences to drive directional liquid movement, thus reducing the risk of secondary droplet entrainment.

The utility model relates to gas treatment and separation technical field, and disclose a kind of separation device for efficient energy -conserving gas treatment, including shell, shell is respectively provided with distributor, first demister, second demister, third demister, vortex tube and vortex sheet from bottom to top;Shell outside is respectively equipped with feed inlet and gas outlet;Distributor includes feather wing blade, first baffle, first support frame, second baffle, second support frame and fixed plate, and the bottom of first baffle and first support frame is fixed to the top of feather wing blade, by gas in oblique feed pipe tangentially into cyclone shell, cyclone blade makes gas produce high-speed rotating vortex, realizes gas-liquid preliminary separation using centrifugal force, liquid drop and solid particle are thrown to shell wall surface, form liquid film along wall surface flow, can quickly and effectively remove most liquid drop and solid particle, reduce the burden of subsequent processing component, improve overall separation efficiency.

Provided is a particle separating device that can quickly remove droplets when the droplets adhere to an electrode for charging a liquid stream.　A particle separating device according to the present technology comprises: a charging unit that charges a liquid stream flowing through a prescribed path and containing liquid particles; a droplet generation unit that generates droplets by vibrating the liquid stream; and a separating unit that separates the charged droplets. The charging unit includes an electrode. The electrode has a proximity unit in proximity to the path and a discharge unit that discharges the droplets to a position off the path when the droplets adhere to the proximity unit.

The invention relates to a droplet guide arrangement (1) for forming a droplet-guiding end edge (2) at a discharge opening (3) of a container cleaning system (4) with a multi-row container guide. To provide a droplet guide arrangement (1) that enables the complete drainage of all drops and reliably prevents dripping onto already cleaned containers (16) and the associated contamination of the containers (16), the droplet guide arrangement (1) comprises at least one droplet guide plate (6) having a tooth (5), wherein a drip area (8) formed by a tooth tip (7) of each tooth (5) is provided for arrangement between the container guide rows of the multi-row container guide, and wherein the droplet guide plate (1) has a droplet guide structure (9) for directing drops to the drip area (8) at the respective tooth tip (7).

This invention discloses a buffer separation device for a gas compressor, belonging to the technical field of separation devices. The device includes a separation tank, a centrifugal assembly, and a recovery assembly. This solution utilizes baffles to stabilize and redirect the centrifuged gas flow, achieving inertial sedimentation of medium-sized droplets. The gas flow, which may contain sputtered liquid mist, is then collected and treated. At the sharp bend in the recovery pipe, tiny droplets generated by sputtering impact the outer wall of the bend due to inertia and are firmly adsorbed and locked by adsorption strips, thus achieving final collection of secondary contaminants and ensuring extremely high dryness of the outlet gas. Simultaneously, the adsorbed liquid can be automatically heated and evaporated and discharged during shutdown, restoring the gas to its original condition. The water-absorbing ring for collecting fluid from the wall is equipped with a squeezing assembly driven by a wave-shaped abutment groove, enabling periodic squeezing and dehydration, fundamentally consolidating the long-term effectiveness in solving the secondary entrainment problem and ensuring consistently stable separation performance.

The utility model discloses a kind of breathable antiskid medical nursing pads, including bottom pad structure and interlayer groove: the bottom pad structure is set on bed sheet;The bottom pad structure includes the leakage-proof layer pad being set on bed sheet.This utility model not only through setting multiple diamond antiskid points for preventing skidding and bottom film for separating diamond antiskid points in leakage-proof layer pad bottom, when using, because diamond antiskid points are as shown in Figure 2 multiple point distribution, that is, when user turns over, some diamond antiskid points and leakage-proof layer pad are separated, other diamond antiskid points are also fixed, reduce the phenomenon that displacement appears between leakage-proof layer pad and bed sheet;Secondly, set an interlayer groove between absorption layer and distribution layer pad, if excessive liquid phenomenon appears on leakage-proof layer pad when using, can be handled by increasing water-absorbing cotton cloth at interlayer groove, reduce the phenomenon that liquid drops to bed sheet when moving medical nursing pad.

This invention discloses a high-efficiency oil-gas separation device, including a separator body. The separator body is provided with a flow channel and a primary oil outlet. A primary separation mechanism is provided inside the separator body below the flow channel, and a secondary separation mechanism is provided inside the separator body above the flow channel. In this invention, by setting up a two-stage or multi-stage precision separation structure with different filtration accuracies, high-efficiency oil-gas separation is achieved, reducing the probability of gas film formation and improving filtration capacity. The separator body adopts a vertical structure, allowing oil to settle by gravity and accumulate at the bottom, then be discharged from the primary and secondary oil outlets respectively. The two-stage filter element structure adopts a porous media structure with a large specific surface area, strictly controlling the flow velocity of the gas and liquid phases. The lower flow velocity can minimize the occurrence of macroscopic droplet breakage.

This invention provides a washing machine, an automatic dispenser, and a control method thereof. The automatic dispenser uses an ultrasonic generator to emit ultrasonic waves; an upper reflective surface is located above the nozzle; an oblique reflective surface is located below the nozzle. After passing through the oblique reflective surface, the ultrasonic waves form an upward-propagating wave, and after passing through the upper reflective surface, they form a downward-propagating wave. The upward and downward waves superimpose to form a standing wave. The vertical distance between the ultrasonic generator and the upper reflective surface satisfies the resonant cavity condition. The nozzle is located at the acoustic pressure node of the standing wave. The controller acquires the droplet mass that the maximum acoustic levitation force of the ultrasonic wave can support, obtains the dispensing mass, and calculates the target number of dispensing droplets based on the droplet mass that the maximum acoustic levitation force of the ultrasonic wave can support and the dispensing mass. When the counting detector detects that the number of droplets has reached the target number, the nozzle is controlled to stop dispensing droplets. This invention is based on acoustic levitation technology, has a relatively small error, and high dispensing accuracy, offering significant advantages for dispensing concentrated liquids.

The application discloses a kind of momentum defoaming based deep gas purification device and method, it is related to chemical equipment technical field, including tank, dynamic distributor, with several momentum defoaming ware momentum defoaming module, fiber condensation module and rotary liquid removal module, tank is equipped with oil gas inlet, liquid phase outlet, gas phase outlet, oil gas inlet is connected dynamic distributor by pipeline, dynamic distributor end is connected with momentum defoaming module;Momentum defoaming module top is equipped with fiber module and rotary liquid removal module in sequence.This application utilizes the momentum of gas-liquid mixture and the baffle in momentum defoaming ware to collide, break up foam liquid drop, and make liquid drop move to the edge of baffle, under the driving of subsequent airflow, discharge, realize the elimination of foam liquid drop;The remaining micro liquid drop is coalesced and grown into larger droplet by fiber condensation module, finally enters rotary liquid removal module, realizes the efficient separation of liquid drop and gas under the action of centrifugal field, reaches the effect of gas deep purification.

This application relates to a method, system, device, and medium for tracking droplets in a cross-flow jet. The method includes: obtaining a binary grid distribution by thresholding the liquid phase volume fraction of three-dimensional Eulerian grid cells; acquiring the three-dimensional liquid phase structure and its number by marking three-dimensional connected regions; and calculating its geometric and dynamic parameters to form a set of physical properties. Based on the spatial grid overlap relationship between the connected regions of the current time step and the connected regions of the previous time step, a cross-time step connectivity mapping relationship is constructed and assigned an evolutionary state label. For connected regions with evolutionary state labels indicating newly formed or fragmented structures, target regions satisfying droplet transformation criteria are selected according to the set of physical properties, and Lagrange particle injection is completed. This method can solve the technical problems of inaccurate droplet identification, inconsistent transformation, and discontinuous tracking, improving the accuracy and consistency of cross-flow jet droplet simulation.

The application relates to the field of microspheres, and particularly relates to a graphene microsphere and a preparation method thereof, and the preparation method comprises a droplet preparation step of graphene microsphere slurry, wherein the droplet of the graphene microsphere slurry is dropped through a dropper, the bottom of the dropper is provided with a droplet size adjusting module, the droplet size adjusting module comprises multiple layers of adjusting units, each layer of adjusting unit is provided with a forming droplet hole, the forming droplet holes on the multiple layers of adjusting units are vertically opposite, the forming droplet holes on each layer of adjusting unit gradually decrease in diameter from top to bottom, and the inner walls of the multiple forming droplet holes form a ladder shape; each layer of adjusting unit comprises two adjusting plates which can slide horizontally, the end portions of the two adjusting plates are opposite, the opposite end portions of the two adjusting plates are provided with arc-shaped grooves, and the arc-shaped grooves are combined into the forming droplet hole when the two adjusting plates abut against each other; and the size of the droplet is adjusted by controlling the opening and closing states of each layer of adjusting unit. The scheme is convenient for adjusting the size of the prepared microspheres and is simple and convenient to operate.

The present application belongs to the field of pharmaceutical analysis, and particularly relates to a dissolution determination method for soft capsule preparation, which installs a screen on the upper side of the stirring paddle of a dissolution device, so that when the soft capsule shell has a large crack and large oil drops appear, the large oil drops can be dispersed into small droplets through the screen, thereby ensuring that the drug dispersion measurement result in the dissolution cup is scientific and reasonable.

The utility model discloses a filling machine for preparing glass printing paint, which belongs to the technical field of paint preparation and comprises a base, a filter fixed in the middle of the top of the base, a diaphragm pump for conveying raw materials, a pneumatic valve group for monitoring conveying of the raw materials and a weighing scale for weighing the raw materials. A conveying pipe is mounted at the input end at the bottom of the filter. The stand column is vertically arranged at the top of the base, the transverse rod is vertically arranged on the side edge of the stand column, and the positioning mechanism composed of the sliding sleeve, the mounting cylinder, the inserting block, the first spring, the through opening, the inserting groove, the strip-shaped groove and the pull block is arranged between the end of the transverse rod and the stand column, so that the heights of the filling heads are adjusted when the filling heads are used, liquid drops are effectively prevented from being scattered, and the filling efficiency is improved. And a plug-in positioning mode is adopted, so that adjustment and use are more convenient.

The application provides a liquid nitrogen wetting contact angle measuring device for a super-low-temperature solid surface, comprising a super-low-temperature solid surface cooling assembly, a nitrogen atmosphere protection assembly, a liquid nitrogen titration assembly and a wetting contact angle observation assembly, wherein the super-low-temperature solid surface cooling assembly can make the sample quickly enter and maintain the super-low-temperature state during the test through liquid nitrogen circulation and a silver cooling plate. The nitrogen atmosphere protection assembly discards the commonly used vacuum scheme in engineering and adopts dry nitrogen protection to avoid the rapid gasification of liquid nitrogen under vacuum. The liquid nitrogen titration device realizes the dropping of liquid nitrogen at different heights, supports the related research on wetting contact angle measurement and droplet impact dynamics. The wetting contact angle observation assembly guarantees the observation of the droplet shape under the super-low-temperature environment through a light source plate, a blowing device and the like. The application fills the gap in the research on the wetting and spreading behavior of super-low-temperature fluid on a cooled solid surface and has important value for super-low-temperature fluid lubrication and super-low-temperature fluid transportation.

This invention belongs to the field of microfluidics and discloses a microfluidic chip for centrifugal generation of oil-free droplets, comprising: a substrate; an intermediate layer including a droplet generation unit, the droplet generation unit comprising: a first aqueous phase storage cavity, a microchannel chip reserved area, a second aqueous phase storage cavity, and a droplet collection area arranged radially from the inside to the outside, and waste liquid cavities disposed on both sides of the second aqueous phase storage cavity; the microchannel chip is bonded to the substrate, and a rectangular microchannel communicating with the first and second aqueous phase storage cavities is provided at the bottom; the top cover includes: a sealing area connected to the microchannel chip, a first aqueous phase sample inlet and a first aqueous phase vent communicating with the first aqueous phase storage cavity, and a second aqueous phase sample inlet and a second aqueous phase vent communicating with the waste liquid cavities; the positions of the second aqueous phase sample inlet and the second aqueous phase vent are further away from the rotation center than the outlet position of the rectangular microchannel. Based on this device, the composition, size, uniformity, and morphology of droplets can be improved.

A system for ejecting droplets from a surface of a sample using acoustic energy includes: a processor; a transducer configured to receive electrical energy and emit corresponding acoustic energy, and further configured to receive acoustic energy and generate corresponding electrical energy; a transmitter in communication with the processor and transducer, wherein the transmitter is configured to receive at least one signal from the processor and transmit corresponding electrical energy to the transducer; and a receiver in communication with the processor and transducer, wherein the receiver is configured to receive the electrical energy generated by the transducer and transmit at least one corresponding signal to the processor, wherein the transducer is configured to emit a first acoustic signal, a second acoustic signal, and a third acoustic signal, wherein the first acoustic signal is determined to cause a mound phase during which a droplet is formed at the surface of the sample, the second acoustic signal is selected to interrogate the surface of the sample during the mound phase, and the third acoustic signal is selected to further interrogate the surface of the sample during the mound phase.

The present application provides a film forming method. The present application is a film forming method in which a raw material solution that has been atomized is heat treated to form a film, and includes the following steps: atomizing or dropletizing the raw material solution to generate mist; using a carrier gas to transport the mist to a film forming section; and supplying the mist from a nozzle to a substrate in the film forming section, heat treating the substrate to form a film, and when the area of the opening surface of the nozzle is set as S [cm 2 ], the longest distance among the distances from a point in the opening surface to the surface of the substrate is set as H [cm], and the flow rate of the carrier gas supplied from the nozzle is set as Q [L / min], SH / Q≧0.015 is satisfied. Thus, a film forming method is provided in which abnormal growth is suppressed and a film with good surface smoothness is formed.

The application belongs to the field of power station oil-water pipeline monitoring, and particularly relates to a liquid leakage metering detection method and system based on an event camera, which comprises continuously monitoring by using the event camera to obtain original event data; performing space-time filtering processing on the original event data to generate event image frames; inputting the event image frames into a pre-trained target detection neural network to identify whether there is a liquid leakage target in the image; if the liquid leakage target is detected, inputting the corresponding event image frame into an image segmentation network to obtain a pixel-level segmentation result of a liquid drop region; calculating a liquid drop contour area based on the segmentation result, converting the liquid drop contour area into a single leakage volume; and calculating a real-time leakage rate and a cumulative leakage amount. The application can detect the liquid drop leakage amount in real time without changing the liquid properties, takes the event stream of the event camera as the input, combines the image processing technology with the physical model, and realizes accurate estimation of the liquid leakage amount.

This invention relates to the field of surfactant production technology, and more particularly to a small mixer for uniform mixing, comprising a lifting body, a clamping part on one side of the lifting body, the clamping part including a linear slide and two sets of grippers, a storage component being disposed in contact between the two sets of grippers, a defoaming mixing component being disposed at one end of the lifting body, and a material dripping component being disposed at the lower end of the defoaming mixing component, with the lower end of the material dripping component embedded inside the storage component. This application, through the arrangement of connecting components, extruding components, shearing components, and connecting components, enables drop-by-drop feeding of viscous raw materials, dispersing aggregated viscous raw materials into droplets and uniformly transporting the raw material droplets to the raw material aqueous solution inside the mixing tank through water circulation, thereby improving the mixing efficiency of surfactant production raw materials. Simultaneously, the use of submerged feeding reduces the interference of air bubbles on material mixing, further improving the uniformity of mixing.

This invention provides a technique for supplying droplets onto a substrate with high precision. The method determines the conditions for supplying droplets from each of the multiple discharge holes to multiple target regions arranged along the scanning direction on the substrate during a process in which a nozzle with multiple discharge holes arranged in one direction scans relative to the substrate and discharges droplets from each discharge hole. The method determines the tilt amount of the nozzle relative to the scanning direction as a condition based on various information, including: first information regarding the spacing of the multiple discharge holes; second information regarding the spacing of the multiple target regions; third information regarding the relative scanning speed of the nozzle and the substrate; fourth information regarding the time until the amplitude of the vibration caused by droplet discharge at one discharge hole reaches an acceptable range in adjacent discharge holes; and fifth information regarding the distance from that discharge hole to the amplitude of the vibration caused by droplet discharge at one discharge hole reaching an acceptable range.

This invention belongs to the field of fire extinguishing materials and their preparation technology, and provides a fire extinguishing microcapsule and its microfluidic controllable preparation method. The preparation method is characterized by the following steps: (1) preparing fluids of each phase, (2) preparing a dual emulsion using a microfluidic device, (3) collecting and sealing the dual emulsion in a collection container, controlling the axis of the collection container to be horizontal, and controlling the collection container to rotate around its axis for 1 to 15 minutes, applying light to solidify the outer shell of the dual emulsion droplets while maintaining the rotation of the collection container, cleaning, and drying to obtain the final product. The fire extinguishing microcapsule prepared by this method consists of an outer shell and a liquid fluorine-containing fire extinguishing agent encapsulated within the outer shell. The outer shell of the fire extinguishing microcapsule has a uniform thickness, and the eccentricity between the outer shell and the core is less than 0.1. The method of this invention can achieve precise customization of fire extinguishing microcapsules according to the differentiated fire characteristics of different application scenarios, and can improve the concentricity between the core and the outer shell of existing fire extinguishing microcapsules.