17 results about "Free flow" patented technology

The present application relates to the technical fields of anti-choking drinking water control, and provides an anti-choking drinking water control method and device, which comprises a cup body, a cup cover connected to the top side of the inner wall of the cup body through a sealing ring, an adjusting cavity fixedly connected to the bottom end of the cup cover, an extension pipe connected to the bottom end of the adjusting cavity through a splicing assembly, a gravity ball fixedly connected to the bottom end of the extension pipe, a through hole for ensuring water flow on the outer wall of the gravity ball, a suction nozzle fixedly connected to the top end of the cup cover, a rubber pad slidingly connected to the inner wall of the adjusting cavity, and a connecting pipe fixedly connected to the top end of the rubber pad. Through the threaded transmission cooperation of the spiral sleeve and the spiral rod, the rubber pad is vertically slid in the adjusting cavity, and then the blocking ball is opened under the negative pressure generated by the appropriate suction force, the waterway is opened under the negative pressure generated by the appropriate suction force, and the blocking ball quickly falls to block the bottom end of the adjusting cavity when there is no negative pressure, so as to avoid the free flow of residual water and realize the flexible adjustment of the suction force.

This utility model relates to the field of fertilizer and water transportation technology, and discloses a distribution device for bio-organic fertilizer processing, including a cylinder and a guide channel. The guide channel is provided at the top of the outer wall of the cylinder, and a partition is provided inside the cylinder. A through hole is opened on the front surface of the partition. A grooved plate is fixedly connected to the top of the partition, and a pair of insert rods are fixedly connected to the bottom of the grooved plate. This distribution device for bio-organic fertilizer processing, through the cooperation of the cylinder, guide channel, partition, through hole, grooved plate, insert rods, and insert hole, allows the cylinder to be installed in a fertilizer and water transport vehicle. When the cylinder is filled with an appropriate amount of fertilizer and water and is being transported, the partition divides the interior of the cylinder into two areas. The through hole allows the flow of fertilizer and water on both sides of the partition, restricting the free flow of fertilizer and water. This helps reduce large swings caused by the large inertia of the fertilizer and water, thereby improving the stability during fertilizer and water transportation and significantly reducing the probability of production accidents caused by fertilizer and water splashing.

A novel online shielding tool, which comprises a material passing groove, a glass rod, a pull rod and a positioning adjusting assembly. The glass rod is arranged in the material passing groove, and the top of the glass rod is higher than the bottom plane of the groove, so that the material belt is lifted to form a suspended passage, the bidirectional free flow of the electroplating solution is promoted, and the thickness difference of the plating layer on both sides of the material belt is eliminated; the pull rod passes through the first guide groove of the horizontal support and the second positioning hole of the sliding block in sequence, is threadedly connected with the rotating disc, and realizes high-precision lifting adjustment; the first fastening bolt locks the height of the pull rod, the second fastening bolt is fixed to the horizontal support after being guided through the second guide groove of the sliding block, and double displacement limiting control is formed; the horizontal support is overlapped with the side wall of the electroplating groove through the clamping grooves at both ends, the corrosion-resistant glass fiber groove body is combined with the titanium alloy pull rod, and the long-term operation stability of the tool is ensured. The utility model realizes accurate positioning of the shielding area without interrupting production, and significantly improves the uniformity of the plating layer and the product consistency.

This invention discloses a biaxial trough solar collector and its usage method, relating to the field of solar energy technology. The invention includes a solar collector, a biaxial support, an energy distribution mechanism, a heat collection mechanism, and a steam guiding mechanism. The invention incorporates a distribution component within the heat collection mechanism. Equally spaced partition meshes divide the inner cavity of the inner heat collection tube into multiple independent areas, segmentally blocking the free flow of the evaporating liquid. Combined with a water outlet trough on the bottom water pipe for continuous leakage, the evaporating liquid is absorbed by the honeycomb sleeve and held in a specific position, exhibiting a "quasi-solid" distribution. This design effectively overcomes the problem of uneven distribution caused by gravity-induced liquid accumulation at lower elevations when the collector tilts due to angle adjustments of the biaxial support, ensuring uniform heat exchange efficiency of the heat collection tube at different angles.

The application relates to the technical field of valves, in particular to a dual-mode valve structure; the valve structure comprises a pipeline main body, a first valve assembly, three groups of second valve assemblies, an outlet flange and an inlet flange, the first valve assembly and the three groups of second valve assemblies are arranged on the pipeline main body; the first valve assembly comprises a first valve shell, a first valve core, two first bearings, two first sealing members, a foreign matter crushing unit and a first valve rod, the first valve shell is connected with the pipeline main body, the first valve core is rotationally arranged in the first valve shell and located between the two first sealing members, the first valve rod is connected with the first valve core, the first valve core is provided with a plurality of filtering holes, the foreign matter crushing unit is connected with the first valve shell and located below the first valve shell, through the arrangement of the above structure, the filtering mode and the free flow mode can be flexibly switched according to the medium working condition, the switching process is stable and free of impact, and the foreign matter automatic crushing function is achieved.

The application discloses a high-efficiency lift-increasing flow control device suitable for a large-thickness airfoil, wherein a gas flow injection member is arranged on a pressure surface and located upstream of a free flow stagnation point, and adopts an inwardly inclined discharge angle of 0-5 degrees; a gas flow recovery member is arranged at the rear of a suction surface. A circulating driving member sucks low-momentum boundary layer fluid at a trailing edge, discharges the pressurized fluid from the injection member, and forms a zero-mass closed loop. In a positive angle of attack working condition, the injected gas exchanges momentum with the flow upstream of the stagnation point, further pushes the stagnation point position to the pressure surface, and expands the range of the negative pressure area at the front edge of the suction surface; meanwhile, the inwardly inclined discharge angle utilizes the wall adhesion effect of the large-curvature front edge to make the injected gas stably flow along the front edge, and forms a concentrated and strong negative pressure concentration area. The device can greatly increase the maximum lift coefficient, delay the stall angle of attack, and has a simple structure and no exposed moving parts, thereby providing a high-efficiency lift-increasing solution for a short-takeoff-and-landing aircraft.

The application discloses a distributed electric propulsion propeller slipstream wing lift measuring device, which comprises a base, a free flow power mechanism and a front-rear moving mechanism arranged on the base, a lifting mechanism arranged on the front-rear moving mechanism, a measuring mechanism arranged on the lifting mechanism, and an attack angle adjusting mechanism arranged on the measuring mechanism and used for fixing a wing to be detected; the power output directions of a plurality of free flow propellers of the free flow power mechanism are all directed to a fairing; the front-rear moving mechanism is used for adjusting the distance between the wing and the fairing; the lifting mechanism is used for adjusting the placing height of the wing; the measuring mechanism is used for monitoring the stress condition of the wing; and the attack angle adjusting mechanism is used for adjusting the placing angle of the wing; thereby, a propeller and wing aerodynamic coupling test device is built, the propeller slipstream wing lift increment can be more accurately obtained compared with the computational fluid dynamics method, and a large amount of effective data can be quickly and cheaply obtained compared with the wind tunnel test.

To provide a flow control valve that can suppress the generation of abnormal noise without causing multiple flows to collide at the center of the flow path. [Solution] A flow control valve 1 having a first port 1a and a second port 1b, wherein the flow from the first port 1a to the second port 1b is free flow and the flow from the second port 1b to the first port 1a is controlled flow, comprising: flow paths 11, 12 connecting the first port 1a and the second port 1b; a valve body 20 housed in the flow path 12 so as to be movable along the flow path 12; and a valve seat 13 provided in the flow paths 11, 12 on which the valve body 20 sits when fluid flows from the second port 1b to the first port 1a, wherein a throttle 24 is provided on the valve body 20 that connects the flow paths 11, 12 when the valve body 20 is seated on the valve seat 13, and when fluid flows from the second port 1b to the first port 1a, the fluid flowing out of the throttle 24 hits the wall surface 11a of the flow path 11.

This utility model relates to the technical field of expansion tanks, and in particular to a novel L-shaped three-chamber expansion tank. Its L-shaped structure allows it to fit into the compact cabin space of new energy vehicles, reducing interference with wiring harnesses or pipes compared to traditional tanks, increasing layout flexibility, and significantly reducing the additional mounting brackets and space required for three independent tanks. Furthermore, by dividing each chamber into multiple small areas, the range and amplitude of coolant free flow are limited, significantly reducing coolant sloshing and impact noise, and improving cabin quietness. The tank includes a lower tank structure, an upper tank mechanism, and three sets of lids. The upper tank mechanism is mounted on the lower tank structure and forms three independent walls. All three sets of lids are mounted on the upper tank mechanism to prevent coolant overflow.

The present application relates to the field of automatic control of ferrite wet compression molding equipment, in particular to a sintered ferrite press programmable logic controller system, comprising a state data acquisition module, a logic operation server, a servo drive control module and a magnetic field excitation control module; the displacement data and pressure data of the press execution mechanism are collected, the ratio of the pressure change and the displacement change of the adjacent scanning period is calculated to obtain the rheological impedance change rate, and the preset maximum impedance constant is given when the displacement change is zero; then compared with the preset threshold value, it is determined that the pressed material is in a rigid compaction state or a free flow state, and the flexible drainage adaptive slope instruction, the delayed excitation pressurization phase difference instruction, or the constant speed press-down instruction, the synchronous excitation pressurization phase difference instruction is output respectively, so as to control the hydraulic output and the magnetic field alternating phase, realize the adaptive matching of the hydraulic action and the magnetic field action to the real rheological state of the slurry.

This invention discloses a collaborative method for customs clearance without personnel based on multi-agent continuous learning, comprising the following steps: S1, scenario modeling and constraint expression, abstracting the multi-agent system, formalizing constraints and compliance judgment conditions, and establishing a task state machine consistent with the customs clearance business process; S2, multi-agent collaborative decision-making mechanism, generating alternative paths, alternative handover points, and alternative resource allocation schemes for execution; S3, self-game scenario generation and strategy learning, constructing a collaborative-adversarial hybrid training mechanism, and introducing multi-objective learning criteria consistent with customs objectives; S4, continuous learning and incremental rule adaptation; S5, cross-agent knowledge distillation and shared memory, improving group consistency and transferability. This solution features improved customs clearance throughput and timeliness, reduced queuing and congestion, reduced costs of manual rule modification and scheduling, ensured "uninterrupted chain, no delays, and no violations," and effectively supports large-scale promotion and application.

The application discloses a kind of hypersonic vehicle global active thermal protection methods, it is related to hypersonic vehicle thermal protection field.Gas dynamic heat peak value is greater than given threshold value, jet port opens, cooling working medium is injected flow field from jet port along the free flow reverse direction, and forms backflow area and covers in aircraft head, realizes head area thermal protection;Cooling working medium reconfigures the shock wave of coming flow, makes the arc shock wave of aircraft head become conical shock wave, and forms reattachment shock wave in aircraft shoulder area;Magnet is installed in aircraft inner wall surface, generates magnetic field and acts on plasma in flow field and generates external thrust force, pushes reattachment shock wave away from wall surface, guides cooling working medium to downstream, realizes global thermal protection.The effect and benefit of the application are: cooling working medium demand is small, thermal protection area coverage area is large, does not change aircraft shape structure, and reliability is high.

The present application belongs to the field of aero-engine nacelle aerodynamic design, and particularly relates to an aero-engine nacelle inverse design method and design system based on a conditional denoising diffusion probability model. The present application builds a high-fidelity dataset containing geometric parameters and working condition parameters (at least containing free flow Mach number and mass flow capture ratio MFCR), uses a conditional denoising diffusion probability model to generate surface pressure coefficient distribution satisfying the target drag coefficient constraint, and uses a mapping network to reconstruct the nacelle geometric parameters. Further combined with CFD checking and peak isentropic Mach number threshold constraint screening, the nacelle shape scheme with target accuracy and physical feasibility is output, so as to reduce the iteration optimization cost and improve the design controllability and robustness.

The application discloses a kind of based on the synergic jet device of Coanda effect, including airfoil body, the jet port being opened in lower surface and being located in free flow stagnation point upstream, the air inlet being opened in upper surface trailing edge area and the airflow driving device being built-in in airfoil.Gas is sucked from the air inlet by airflow driving device, and is sprayed along lower surface tangentially after pressurization from jet port, and zero mass jet closed loop is formed.In positive angle of attack working condition, high-speed jet is sprayed from upstream stagnation point first, and momentum exchange is carried out with high-energy free flow, actual stagnation point position is pushed to lower surface, and the range of low-pressure area of upper surface leading edge is expanded;then, based on Coanda effect, it flows to upper surface around leading edge and adheres to wall, and concentrated and strong low-pressure area is formed in leading edge area, and circulation of airfoil is significantly increased, leading edge suction is restored, and lift is greatly improved with lower jet momentum consumption, resistance is significantly reduced and stall angle of attack is effectively delayed.The application has compact structure and high energy efficiency ratio, and is suitable for various aircraft wings.

The utility model relates to a door seal strip and including its ultra low temperature refrigerator belong to refrigeration equipment technical field. The door seal strip is equipped with a plurality, all fixed on the cabinet of refrigerator, and with the door body sealed contact connection of cabinet, and the door seal strip includes the sleeve, and the sleeve inside hollow and stored gas, and the sleeve inside still is equipped with the partition for blocking the convection of sleeve inside gas. The door seal strip passes through setting the partition in the sleeve, and the free flow of internal gas is blocked, and the heat exchange caused because of gas convection is reduced, thereby promoting the overall heat insulation performance of door seal strip, reduces the heat leakage of door body place, guarantees the ultra low temperature environment in the ultra low temperature refrigerator.