70 results about "Surface tension force" patented technology

The invention provides a gas-liquid-solid multi-phase conveying centrifugal pump performance prediction method and an optimization design method. According to the method, the performance of the centrifugal pump is accurately predicted and the design efficiency of the centrifugal pump is improved through numerical simulation and optimization design in combination with a gas-liquid-solid three-phase flow dynamic model. Firstly, blade parameters are determined according to design requirements, a three-dimensional model is established, and grid division is carried out; then, the VOF-Level Set multiphase flow model, the particle model and the gas-liquid-solid coupling model are corrected, factors such as surface tension, particle immersion force and drag force are considered, and lift and efficiency curves are calculated through numerical simulation; and finally, a particle accumulation area is analyzed based on the particle distribution characteristic graph, and the optimal lift efficiency combination is obtained by adjusting parameters such as the inlet angle, the inlet width, the wrap angle and the blade number of the blades and optimizing design. According to the method, the performance of the centrifugal pump in the gas-liquid-solid multiphase flow environment can be improved, and a new design thought is provided.

The utility model relates to the technical field of pipeline groove grinding, in particular to a pipeline groove grinding integrated device which comprises a placing table and a moving table, two inserting grooves are formed in one end of the placing table, connecting blocks are installed and inserted into the two inserting grooves, the connecting blocks are fixedly connected to one end of the moving table, and the moving table is fixedly connected with the placing table. A dust cover is fixedly connected to the top end of the movable table, a booster water pump is fixedly installed at the top end of the dust cover, the output end of the booster water pump is fixedly connected with the top end of a spraying head and internally communicated with the top end of the spraying head, a water inlet is formed in one side of the booster water pump, and the spraying head is arranged at the inner top of the dust cover. And a plurality of universal wheels are arranged at the bottom end of the moving table. According to the device, the booster water pump drives the atomizing spray head to form water mist, dust particles generated by grinding are wetted, the dust particles are bonded into large particles through surface tension of water, sedimentation is accelerated, and dust diffusion is effectively restrained.

The present application discloses a cleaning device and an electroplating device. The cleaning device is configured to clean an electroplating chuck, and comprises a tank body and a pipe assembly; the tank body comprises an inner tank and an outer tank, the inner tank is configured to contain a cleaning liquid, and the outer tank is provided at the periphery of the inner tank and is configured to collect the cleaning liquid overflowing from the inner tank; the pipe assembly comprises a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected to the inner tank and is configured to supply the cleaning liquid to the inner tank, and the liquid outlet pipe is connected to the outer tank and is configured to discharge the cleaning liquid from the outer tank. The electroplating chuck has a first portion to be cleaned, and said first portion is located at the bottom of the electroplating chuck. When the electroplating chuck is cleaned, said first portion is located at the opening of the inner tank, so that the cleaning liquid overflowing from the inner tank cleans said first portion under the action of surface tension. By means of the surface tension of the cleaning liquid overflowing from the inner tank, the electroplating chuck is cleaned efficiently, and splashing and dripping of the cleaning liquid into an electroplating chamber of the electroplating device are effectively reduced or even avoided.

The provided method includes: determining an energy parameter and a co-volume parameter of a pure gas by a PR state equation, and determining a material parameter and a co-volume parameter of a mixed gas by a Waals one-fluid mixing rule and a combination rule; determining a Helmholtz free energy density and an equilibrium density of the pure gas by a Wertheim molecular association theory, and determining Helmholtz free energy and an equilibrium density of a (H2+N2) mixed gas with different components by a density mixing rule; determining an influence parameter of the pure gas by a gradient theory (GT), and determining an influence parameter of the mixed gas by the influence parameter of the pure gas and an interaction coefficient; simplifying a GT model; and obtaining the surface tension of the (H2+N2) / H2O system at different temperatures by combining the LGT model and the PR state equation.

The invention discloses a surface tension coordinated regulation and control high-strength dense net underwater explosion jet flow suppression protection device and a use method. A selective permeable barrier is constructed through a high-strength dense net, surface tension of an interface is used for cooperatively and selectively permeating a water phase, blocking a gas phase from passing, breaking symmetrical expansion of bubbles and inducing energy to be dissipated in a capillary wave form, and the surface tension and multi-layer array configuration are adjusted by combining real-time adjustment of mesh tension and a dense net structure; the formation of high-speed jet flow is inhibited; and collapse energy is dispersed. The limitation that traditional protection only weakens shock waves is broken through, double inhibition of bubble pulsation and jet flow can be achieved, and the device has the advantages of light weight and modular deployment and has important popularization value in military and engineering scenes such as submarines and underwater facilities.

To provide a method and a device for estimating floating droplet surface tension, which enable accurate estimation of surface tension of a floating droplet using the flotation technique even when the floating droplet is not truly spherical due to an external force required for flotation.SOLUTION: A floating droplet surface tension estimation method for estimating surface tension of a floating droplet is provided, the method involving correcting surface tension derived on the basis of a vibration frequency of the floating droplet using a correction equation including variables based on an external force applied to the floating droplet.SELECTED DRAWING: Figure 1

The invention provides a method for rapidly predicting the surface tension of a foam extinguishing agent on site, which comprises the following steps: S1, collecting the surface tension of different types of foam extinguishing agents under different temperature conditions; s2, taking the first surface tension and the temperature measured by the thermocouple as input data, and taking the second surface tension as output data; s3, establishing a machine learning model; s4, after the model parameters are initialized, establishing a mapping relation between the input data and the output data; s5, the first surface tension and the temperature are collected again to serve as input data, and the machine learning model is adopted to predict data of the second surface tension. According to the method, the maximum bubble pressure method is improved based on high-speed camera shooting and image recognition, temperature compensation and a machine learning model are combined to predict the surface tension of the foam extinguishing agent on the fire extinguishing and rescue site, and the requirements that on-site surface tension measurement operation is convenient, the device structure is simple, and the surface tension measurement result is high in accuracy can be met.

The invention discloses an absolute measurement method and device for the density of molten salt and solution, and belongs to the field of molten salt physical property tests.The measurement method comprises the steps that 1, a cone and cylinder composite heavy hammer is adopted to measure the density of the molten salt or solution; 2) arranging two measuring positions on the cylinder section of the heavy punch, taking the section between the two measuring positions as a middle measuring section, the length of the middle measuring section is equal to the distance between the two measuring positions, the diameter of the middle measuring section is equal to the diameter of the cylinder of the heavy punch, and measuring at the two positions in sequence; (3) the density of the fused salt or the solution is determined by the volume of the middle measuring section of the heavy hammer and the buoyancy borne by the middle measuring section, so that the density of the fused salt and the solution is deduced; according to the method, a long-distance microscope system is adopted to directly measure the thermal expansion of the heavy hammer at high temperature, calibration by a standard substance is not needed any more, when the method is adopted to measure the density of the fused salt and the solution, the volume of the heavy hammer does not need to be calibrated, additional force caused by surface tension is completely removed, the measurement process is greatly simplified, and the measurement precision is improved.

The utility model discloses a de-foaming device for adhesive production, which comprises a de-foaming mechanism, the de-foaming mechanism comprises a shell, a motor is fixedly connected to a middle shaft of the top of the shell, the output end of the motor is fixedly connected with a stirring roller, and the top of the surface of the stirring roller is fixedly connected with a driving gear. According to the defoaming device for adhesive production, the defoaming mechanism is arranged, gas in an inner cavity of a shell is pumped out through a first one-way valve and an exhaust pipe in the process that a sealing disc moves towards the left side, gas in an inner cavity of a connecting cylinder is exhausted in the process that the sealing disc moves towards the right side, and the inner cavity of the shell is vacuumized through reciprocating work; the pressure of the inner cavity of the shell can be reduced, bubbles in the adhesive are expanded and escaped in a low-pressure environment, when the pressure is reduced, the solubility of dissolved gas in liquid is also reduced, the bubbles move from the interior of the adhesive to the surface, and the bubbles are broken under the action of surface tension, so that the aim of defoaming is fulfilled.

The present application relates to the technical field of atomization numerical simulation, and relates to an atomizer atomization numerical simulation method and system based on temperature variation characteristics, which comprises the following steps: confirming a test atomizer set and an ambient temperature set, obtaining a plurality of normal liquid viscosity sets and a plurality of normal liquid droplet surface tension sets, obtaining an optimized temperature interval, constructing a viscosity surface tension momentum equation, setting a solver parameter, sequentially extracting an optimized temperature value from the optimized temperature interval, simulating a pre-constructed simulation atomizer according to the solver parameter, the optimized temperature value and the viscosity surface tension momentum equation, obtaining a simulation atomization parameter, otherwise, taking the simulation atomization parameter as an optimized atomization parameter, summarizing the optimized atomization parameters, obtaining an optimized atomization parameter set, obtaining an optimal atomization parameter, and completing the atomizer atomization numerical simulation based on the temperature variation characteristics based on the optimal atomization parameter. The present application can improve the performance and atomization effect of the atomizer.

The utility model relates to technical field of compressor production, specifically relates to a device for welding of compressor upper and lower cover circumference, it includes frame, deflection device, clamping device, welding torch, welding torch moving device, welding torch cleaning device, clamping device is located on deflection device, welding torch sets up on welding torch moving device deflection device, welding torch cleaning device, welding torch moving device all set up on the frame, the utility model passes through using the single welding torch of immovable position, utilizes the mode of workpiece rotation and carries out welding, can weld the high -quality weld. And the workpiece is placed in the inclination, in the welding process, the welding fluid will flow along the junction of upper and lower cover circumference and fill it due to the action of gravity and the action of liquid surface tension, will make the weld internal density uniform after welding, and the weld is not easy to collapse due to uneven stress. Through setting up the welding torch cleaning mechanism, the welding torch is cleaned and lubricated after working for a period of time can prolong the service life of the welding torch and improve production efficiency.

The application provides a liquid accumulator integrated with a surface tension storage tank shell, which comprises a lower shell, a supplement port, a liquid outlet port, a screen assembly and a middle separation assembly, the supplement port and the liquid outlet port are connected with the bottom of the lower shell respectively, the middle separation assembly is fixedly arranged on the inner wall of the lower shell, one end of the screen assembly is connected with the middle separation assembly, and the other end of the screen assembly is communicated with the liquid outlet port; the middle separation assembly comprises a separation plate, a gas guide pipe and a flow guide assembly, a circular hole is arranged in the center of the separation plate, the separation plate is fixed on the inner wall of the circumferential side of the lower shell, the flow guide assembly is arranged on the separation plate, one end of the gas guide pipe is arranged in the angle area between the separation plate and the lower shell, the other end of the gas guide pipe passes out from the circular hole, and the height of the passing-out end is flush with the highest part of the separation plate. The liquid on the upper and lower sides of the separation plate can freely move through the central circular hole, compared with the traditional closed accumulator structure, the great impact load caused by the incompressibility of the liquid to the structure is reduced, and the mechanical performance of the accumulator is enhanced.

The present application relates to the technical field of micro liquid flow standard device, more particularly, it is especially related to a liquid surface tracking type liquid mass weighing method and device.The present application comprises: S1, using a spectral confocal sensor to monitor the liquid level in the weighing container in real time; S2, driving the liquid inlet pipe by a motor control module, so that the lower end of the liquid inlet pipe keeps a constant relative position with the liquid level; S3, continuously recording the liquid mass by a weighing device; S4, using the constant relative position to regard the surface tension as a system constant, and deducting the weighing initial value to eliminate the influence of the surface tension on the dynamic weighing uncertainty.The present application can keep the distance between the liquid surface and the liquid injection pipe constant, and the error is controlled within 0.5mm, so that the surface tension becomes a stable system error and is eliminated, and the influence of the surface tension on the micro liquid mass weighing uncertainty is eliminated.

This invention discloses a supercritical gas injection simulation method for deep-earth energy storage projects. This method constructs a computational framework for supercritical gas-salt two-phase flow based on the lattice Boltzmann method, utilizes the Shan-Chen two-component model to characterize the interaction between supercritical gas and water, and introduces a continuous surface force model equation to controllably couple interfacial tension, thereby achieving numerical simulation of supercritical gas injection under high density ratio and high surface tension conditions. Through an improved force term discretization scheme and independent adjustment of the surface tension term, high-precision recovery of force balance at the interface is achieved, significantly improving simulation stability and physical consistency. This invention fills the gap in the lattice Boltzmann method for simulating the displacement, migration, and storage behavior of various supercritical gases in porous aquifers or fractured grids, and can provide technical support for the design, operation, and safety assessment of deep-earth energy storage projects.

The application discloses a valve body laser cutting device and method, which comprises the following steps: low-duty-ratio pulse scanning is performed on the outer wall of the valve body to generate a guide groove with surface tension gradient and corrugated texture; inner and outer double-layer pulse air flows are sprayed according to the characteristics of the guide groove, and periodic negative pressure cavities and positive pressure barriers on both sides are formed at the groove bottom; spiral trajectory continuous laser cutting is performed under the action of the double-layer air flows, transverse ultrasonic waves in a three-to-four resonance relationship with the inner layer pulse air flow are applied, and a standing wave guide flow is established on the surface of the molten pool to obtain a cutting seam penetrating through the wall thickness; when the cutting seam is penetrated, the air flow is switched to negative pressure suction and the ultrasonic wave is changed to a traveling wave to remove residual molten droplets; low-power rapid scanning is performed on the inner wall of the cutting seam by using the residual heat of the valve body, and pulsed inert gas flow is injected to make laminar flow and micro-turbulent flow alternately peel off the residual film. The scheme can inhibit slag backflow without increasing additional cooling or chemical treatment.

The application discloses a multiphase flow interaction simulation method based on MPM and a phase field model, and comprises the following steps: step S1, storing mass parameters, phase field parameters and momentum parameters of Lagrange particles in an Euler grid; step S2, updating the phase field of the Euler grid according to the chemical potential to control the energy of the whole system; step S3, updating the momentum of the Euler grid according to gravity, elastic force and the surface tension of the updated equivalent phase field form; step S4, after the grid momentum is updated, processing the boundary on the Euler grid by using a slip boundary condition; step S5, after the phase field and the momentum are updated, converting the momentum parameters and the phase field parameters from the Euler grid variables to Lagrange variables; and step S6, updating the state of the Lagrange particles: updating the position and mass state of the Lagrange particles according to the information returned to the Lagrange particles.

The invention belongs to the technical field of communication, and provides a microcomputer electroacoustic emission sensor and a preparation method thereof.The microcomputer electroacoustic emission sensor comprises a substrate device and a cantilever device partially attached to the substrate device, and a gas cavity is formed in the attached position and the non-attached position; a through hole is etched in the cantilever device, and the cantilever device and the substrate device penetrate through the gas cavity through a through hole gap to form a liquid-gas cantilever bridge structure based on surface tension; and the space of one side, close to the through hole, of the gas cavity is gradually increased. By utilizing the surface tension of a liquid medium, a gas cavity is formed below the cantilever structure, a liquid-cantilever-gas structure is formed, and liquid cannot enter the cavity structure under the action of the surface tension by controlling the width of a gap between the piezoelectric cantilever structure and the surrounding wall structure; direct detection of acoustic emission signals propagated in liquid in the storage tank is realized, and the sensitivity of the sensor is improved.

The invention relates to the technical field of multiphase flow mass transfer simulation, and provides a fluctuating pipeline oil-gas two-phase flow transient determination method and device considering multiple flow patterns. The corresponding method comprises the following steps: generating respective momentum equations of the oil phase and the gas phase in the fluctuating pipeline according to respective phase density, volume phase volume fraction, phase velocity, mass exchange rate, acting force between the oil phase and the gas phase and interface relative pressure of the oil phase and the gas phase; according to the respective phase density, the phase velocity and the friction factor of the oil phase and the gas phase, determining the relationship between the inter-phase pressure difference generated by the surface tension in the fluctuating pipeline and the relationship between the stable slug flow and the respective phase friction force of the oil phase and the gas phase; determining a flow pattern type according to the hydraulic parameters of the fluctuating pipeline; and determining the oil-gas two-phase flow transient state of the fluctuating pipeline according to the momentum equation, the inter-phase pressure difference, the relationship and the flow pattern type. According to the oil-gas two-phase flow transient state determined by the method, the dynamic change of the flow process can be better reflected, and the time-varying characteristic and spatial distribution of the oil-gas two-phase flow transient state can be more accurately represented.

The invention discloses a micro rotor and a method for detecting liquid low surface tension based on the rotating speed of the micro rotor, and belongs to the technical field of liquid surface tension testing devices.The micro rotor comprises a rotating center, at least two rotating arms in the same direction are machined on the rotating center, and arc-shaped hydrophilic grooves communicated with the rotating center are machined in the rotating arms; the tail end of the arc-shaped hydrophilic groove is communicated with the outside; the width of the arc-shaped hydrophilic groove is gradually reduced in the direction from the rotating center to the tail end of the rotating arm. According to the method, the low-surface-tension liquid is dropwise added to the rotation center of the micro rotor, the actual motion state of the micro rotor is analyzed by using Tracker software, and the test rotation speed result of the micro rotor represents the tension of different low-surface-tension liquids, so that the low-surface-tension liquid soluble in a water substrate is rapidly detected. The micro rotor has good reusability, the preparation method is high in applicability, and the micro rotor can be widely applied to the fields of biomedical treatment, chemical engineering, environment detection and the like.

The present application relates to the field of space attitude and orbit control power system, in the field, the attitude and orbit control power system adopts double-component constant pressure extrusion type propelling system, which is generally in the form of four storage tanks laid flat, two of which are filled with oxidizer and the other two are filled with fuel. The storage tank of the propelling system is usually selected as a surface tension storage tank, and the two parallel working storage tanks of the same component are required to have a balanced discharge index of more than 3%. The flow resistance deviation of the pipeline has a great influence on the balanced discharge. The present application discloses an analysis method and system for the influence of the flow resistance deviation of the pipeline on the balanced discharge of the storage tank. Through the method, the flow deviation of the two surface tension storage tanks of the same component caused by the flow resistance deviation of the pipeline can be theoretically estimated, so that the percentage value of the unbalanced discharge can be calculated. A reference method is provided for the analysis and control of the unbalanced discharge of the two storage tanks of the same component in the deep space field attitude and orbit control power system.

This invention provides a method and apparatus for determining the microscopic contact angle of a rock stratum surface, relating to the field of contact angle measurement of rock stratum surfaces. The modeling method includes: acquiring a standard sample image of a droplet formed by a known liquid on the surface of a rock stratum to be tested; determining the contact angle of the known droplet using the standard sample image; determining the contact angle equation using the correspondence between the liquid-solid interfacial tension, the liquid surface tension, and the surface tension of the rock stratum to be tested, as well as the surface tension balance equation along the contact line; determining the surface tension of the rock stratum to be tested using the contact angle equation, the known droplet contact angle, and the known surface tension of the liquid; and determining the contact angle of the droplet formed by the liquid on the surface of the rock stratum to be tested based on the contact angle equation, the surface tension of the rock stratum to be tested, and the surface tension of the liquid to be tested. This invention enables accurate and rapid acquisition of microscopic wetting contact angle data of a liquid on the surface of any rock stratum to be tested, improving efficiency and accuracy compared to methods such as nuclear magnetic resonance (NMR) and atomic force imaging (AFM), while reducing experimental costs.

The utility model relates to sampling technical field, and disclose a wort sampler, including sampling cylinder, the outside of sampling cylinder is connected with the sliding frame that slides, the both sides fixedly connected with fixed establishment of sliding frame, the bottom fixedly connected with liquid inlet pipe of sampling cylinder, the middle of liquid inlet pipe is provided with the clamping groove. This wort sampler, through the setting of sealing insert block, defoaming net and limiting mechanism, sealing insert block is inserted into the clamping groove of liquid pipe together with defoaming net, then loosens the limiting piece, and the cylinder rod and limiting piece will be inserted into sealing insert block under the reset force of second spring and be fixed, when wort passes through defoaming net, the bubble will be blocked and punctured by the fine structure of defoaming net, due to the surface tension effect of defoaming net, the bubble will break when contacting the net surface, thereby reaching the purpose of eliminating the bubble, and moving the limiting piece upwards can extract defoaming net and maintain or replace, increase the accuracy of detection and the convenience of replacement.

The invention relates to the technical field of experimental equipment, and provides a high-recovery-rate microfilter and a method, and the high-recovery-rate microfilter comprises a conical pipe body, a filtering membrane assembly, a pressure adjusting interface and a collecting pipe. The tapered channel of the conical tube body can guide samples to naturally converge under the action of centrifugal force, so that the dead volume of the cavity is greatly reduced; the filtering membrane assembly adopts the combination of a pre-filtering membrane and a fine filtering membrane, so that the filtering precision is ensured, and meanwhile, blockage is prevented; the key point is that a pressure adjusting interface is arranged at the upper opening end, an external pressure source is allowed to be connected after centrifugation, controllable positive pressure is applied to the top space, and final liquid drop residues caused by membrane surface tension are actively overcome. A collecting ridge is arranged at the bottom of the collecting pipe, so that trace filtrate can be conveniently collected and sucked. The method provided by the invention can realize a recovery rate of more than 99% for 10-200 [mu] L of samples, and is especially suitable for pretreatment of precious and limited trace samples.

The invention provides an atomizing disc which comprises an upper centrifugal disc and a lower centrifugal disc which can be buckled with each other, and a cavity for containing liquid is formed between the upper centrifugal disc and the lower centrifugal disc. The upper centrifugal disc is in a bowl shape and comprises a first bottom disc part and a circle of side wall part extending out of the outer edge of the bottom disc part, a liquid inlet is formed in the middle of the upper centrifugal disc, and a plurality of first flow guide strips are evenly distributed on the inner side of the side wall part; the lower centrifugal disc comprises a second chassis part and second flow guide strips circumferentially arranged on the second chassis part at intervals, a flow guide wall is formed at one end, close to the outer side of the chassis part, of each second flow guide strip, and a second non-smooth part used for breaking the surface tension of liquid is arranged on the edge of the outer side of the second chassis part. The atomizing disc can well break the surface tension of liquid drops, so that the particle size of the fog drops is smaller, the atomizing uniformity is improved, the spraying is more uniform, and the spraying effect of the atomizing disc is improved.

The invention provides a liquid film oscillation mechanism and fluctuation stability calculation method and device based on a particle method. The method provided by the invention comprises the following steps: firstly, constructing a calculation model by arranging five types of particles, namely, sole, fluid, wall, dummy and ghost; secondly, applying a net heat flow boundary considering wall enthalpy correction, radiation heat dissipation and a gas injection factor based on a virtual particle method to realize heat transfer and phase change calculation; then solving a viscosity item and a shear force by adopting a fully implicit method, and updating a particle motion state by combining a non-Newton flow power law model; then, a potent model is introduced to calculate surface tension and overload influence; solving a pressure field through a pressure Poisson equation and iteratively updating particle positions; and finally, dynamically marking ghost particles at the outlet to optimize the calculation efficiency. According to the method, the oscillation phenomenon of the liquid film can be accurately simulated, the generation mechanism and stability influence factors of the liquid film can be revealed, theoretical support and technical means are provided for thermal protection design of the silicon-based material, and the technical problem that the three-dimensional dynamic ablation morphology cannot be analyzed through a traditional method is solved.

The present application relates to a kind of wheel units for crossing obstacles, which keeps the shape change of the wheel minimum when driving on horizontal ground by using the principle that water droplets keep their shape by surface tension; when the obstacle hits the side surface of the wheel, the structure of the wheel is changed to easily cross the obstacle; in particular, in the case of crossing obstacles, obstacles can be effectively crossed by relative rotation and movement between adjacent unit blocks, and restored immediately after crossing obstacles.

A method of generating droplets from a liquid sample is described and is characterised by the steps of a) locating the sample at a first electrowetting location and applying an electrowetting force to cause a region of the sample to become elongated in a direction in which the electrowetting force is applied; b) temporarily altering the electrowetting force on the sample and accumulating electrostatic surface charge on the sample to counter surface tension forces between the bulk of the sample and the elongated sample region; c) restoring the electrowetting force; d) further elongating the charged elongated sample region using the electrowetting force and e) severing a droplet from the charged elongated sample region. A corresponding droplet generator is also described.

A concrete processing vibration exhaust device is characterized by comprising an upper plywood, a lower plywood and a vibration transmission assembly, the upper plywood is arranged on the upper portion of the lower plywood, and the vibration transmission assembly is arranged between the upper plywood and the lower plywood; the vibration transmission assembly is used for enabling the upper closing plate and the lower closing plate to vibrate; the upper plywood and the lower plywood are used for fixing a cement product; unsolidified concrete in the first containing cavity and the second containing cavity contains a large number of air bubbles, especially gaps are easily formed in the positions such as the corners of a formwork and the peripheries of steel bars, the upper plywood drives the upper wall plate to vibrate, the lower plywood drives the lower wall plate to vibrate, impact force can be generated on the unsolidified concrete in the first containing cavity and the second containing cavity, and therefore the concrete in the first containing cavity and the second containing cavity is solidified. The impact force destroys the surface tension of bubbles and water in the concrete and promotes the bubbles to float upwards and be discharged, so that the internal structure of a concrete product is stabilized.

The application discloses a preparation method of a micro-flow pipe with super large width-height ratio, which comprises the following steps: a flexible block is prepared by using a flexible material, and a micro-flow groove is formed on one side of the flexible block, and an outlet and an inlet communicating with the micro-flow groove are formed on the other side; a base is bent, and a volatile liquid is filled in the bent concave surface; the side of the flexible block with the micro-flow groove is contacted with the bent concave surface, so that the volatile liquid is automatically filled in the micro-flow groove under the action of surface tension; the base is restored to be flat while the flexible block is kept in contact with the base, so that the flexible block is attached to the base; the flexible block and the base are molecularly bonded by heating to form a micro-flow pipe, and the volatile liquid is volatilized. The micro-flow pipe with super large width-height ratio can be prepared.

The invention relates to the technical field of blow molding containers, in particular to a blow molding container capable of preventing dripping liquid from hanging and gathering and provided with a closed end, the blow molding container comprises a bottle opening and a channel for pouring liquid, the channel is arranged at the top of a bottle body, and the bottle opening comprises a first flow guide section, a second flow guide section and a third flow guide section. The three flow guide sections are all stepped flow guide slopes, the inclination angles of the three flow guide sections are gradually increased, liquid sequentially passes through the first flow guide section, the second flow guide section and the third flow guide section when being poured to break the surface tension of the liquid, and the liquid is stably guided out in an accelerated mode; the backflow assembly is arranged at the bottom of the bottle opening and comprises a backflow sleeve, a backflow ring and a linkage ring; the backflow sleeve is arranged above the backflow ring, when liquid is poured, the liquid sequentially passes through the flow guide sections, surface tension is broken through gravitational component force in a stepped strengthening mode, the sticky liquid is stably guided out in an accelerated mode, meanwhile, liquid beads hung on the wall edge of the bottle opening enter the bottle body again through the backflow assembly, and the bottle body is prevented from being polluted.