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231 results about "Nozzle" patented technology

A nozzle is a device designed to control the direction or characteristics of a fluid flow (especially to increase velocity) as it exits (or enters) an enclosed chamber or pipe. A nozzle is often a pipe or tube of varying cross sectional area, and it can be used to direct or modify the flow of a fluid (liquid or gas). Nozzles are frequently used to control the rate of flow, speed, direction, mass, shape, and/or the pressure of the stream that emerges from them. In a nozzle, the velocity of fluid increases at the expense of its pressure energy.

Optimization design method of radial-flow-type hydraulic turbine

ActiveCN102608914ASmall amount of calculationHigh precisionAdaptive controlImpellerMultivariable optimization
The invention discloses an optimization design method of a radial-flow-type hydraulic turbine. In the design method, a unitary thermal optimization design, a three-dimensional modeling method of a through-flow part and a complete machine optimization platform are utilized, wherein the optimization platform comprises four modules, namely nozzle blade and impeller blade parameterization, a coevolution genetic algorithm, a self-adaption approximation model, and autocall of CFD (computational fluid dynamics). Through the parameterization, characteristic variables describing impeller blades, nozzle blade patterns and installation angle variation are extracted. The optimization target is to enhance the overall efficiency and expansion ratio of the hydraulic turbine simultaneously under a complete machine environment. The optimization platform can be used for reducing the calculated amount and accelerating the convergence by virtue of the following measures: the approximation model is built and updated by a dynamic sampling strategy, and enough prediction accuracy is obtained by virtue of less CFD calculation; and a complicated multivariable optimization problem is decomposed into a plurality of relatively independent and interactive subproblems by virtue of the coevolution genetic algorithm, so that not only can the characteristics of the original problem be maintained, but also the calculated amount is reduced effectively.
Owner:开山(西安)透平机械有限公司

Special fixture for processing inclined conical nozzle steam passage and method thereof

InactiveCN101670527AGuaranteed accuracyImprove operational efficiencyPrecision positioning equipmentPositioning apparatusMilling cutterDrill bit
A special fixture for processing an inclined conical nozzle steam passage and a method thereof relate to a fixture for processing the inclined conical nozzle steam passage and a method thereof. The invention solves the problem that at present, no special fixture for processing the inclined conical nozzle steam passage exists, and when a tapered hole of the nozzle steam passage is processed, a drilling bit is difficult to be centered. An indexing plate of the special fixture is provided with twenty indexing through holes along the periphery direction; the center of a stepped through hole and the center of the indexing through holes are on one periphery; a spotting spindle is mounted on the indexing plate in a plug-in manner; the processing method is as follows: using a milling cutter with diameter of 13mm to feed from a P point so as to process a plane C which is vertical to the central line of the tapered hole to be processed; and stopping feeding when the milling cutter mills to a Q point, wherein the center of a hole pitch circle having diameter of 13mm and milled by the milling cutter is the core-bit of the drilling bit. The special fixture solves the problem that at present, nospecial fixture for processing the inclined conical nozzle steam passage exists; and the inclined conical hole of the nozzle stream passage processed by the method has high position accuracy.
Owner:HARBIN TURBINE

Vacuum spray freeze-drying device and method

The invention provides a vacuum spray freeze-drying device and method. The vacuum spray freeze-drying device is characterized in that the device comprises a closed container used for containing materials in the vacuum spray freeze-drying process, atomizing nozzles, a vacuum system and a temperature regulating jacket; the atomizing nozzles are used for atomizing and dispersing liquid to be freeze-dried into liquid drops and spraying the liquid drops into the container; the vacuum system is used for forming a vacuum environment in the container in the vacuum spray-freezing pelletizing stage to enable part of components in the liquid drops to be vaporized so as to absorb heat, and then the liquid drops are cooled and frozen to form particles, and the vacuum system is also used for carrying out continuous vacuumizing in the drying stage so as to maintain the vacuum environment; the temperature regulating jacket is used for carrying out refrigeration in the vacuum spray-freezing pelletizing stage to prevent part of components in the particles from being molten, and the temperature regulating jacket is also used for providing sublimation heat for part of the components in the particles in the drying stage. In the fast freezing process of the materials, and no refrigerants are adopted to contact with the materials, so that the risk of material pollution is completely eliminated, and sterility of the freeze-drying process is guaranteed.
Owner:SHANGHAI TOFFLON SCI & TECH CO LTD

Asphalt mixture regenerating heating stirring roller

The invention discloses an asphalt mixture regenerative heating rod and mixing roller, and belongs to the concrete stirring technical field. The invention has a tilted roller supporting frame, a rolling ring, a roller and a roller driving device, wherein, the rolling ring is sleeved on the roller and supported by a rolling wheel arranged on the roller supporting frame, a burner is arranged at the lower end of the roller, a material outlet is arranged on the roller at the lower part of the burner, a material inlet is arranged at the other end of the roller, and a smoke outlet is arranged on the roller; wherein, an inner screening tube is sleeved inside the roller positioned at the material inlet end, and the inner screening tube is connected with the roller, the outer peripheral wall of the inner screening tube is composed of a screening mesh, a circular filtering mesh is sealed at the end part on the inner side of the inner screening tube, the material inlet is communicated with the inner screening tube, and an asphalt nozzle is arranged inside the roller positioned below the burner at the outlet end. The invention has compact and rational structure and high heat exchange efficiency, does not require secondary breakup of the waste asphalt mixture, can directly heat the block shape waste asphalt mixture for recycling; and the regenerated asphalt mixture can be directly utilized.
Owner:HENAN ROADY ROAD MACHINERY

Rapid molding method based on electrorheological fluid, and apparatus thereof

InactiveCN102615830ANo pollutionLess prone to accuracy deviationControl lineEngineering
A rapid molding method based on an electrorheological fluid, and an apparatus thereof are provided. The electrorheological fluid is jetted to a deposition base station with electric field, the electrorheological fluid is rapidly cured through utilizing an electrorheological effect, and the electrorheological fluid deposits on the deposition base station layer by layer to construct a three dimensional entity; a liquid storage container, a driving pump and a nozzle are sequentially communicated through a pipeline to form an electrorheological fluid conveying path; two control lines are set by a computer, a first control line controls the flow of the driving pump, and a second control line controls the three dimension movement of the nozzle through a servo mechanism; and electrodes which comprise an anode and a cathode closely adhere to two sides of a model to be deposited on the deposition base station to provide the electric field required by the curing of the electrorheological fluid. The apparatus which utilizes the electrorheological effect of the electrorheological fluid and utilizes the electric field to replace a temperature control module and a constant temperature environment in traditional fusion jet rapid molding has the advantages of simple structure, substantial reduction of the cost and energy, and realization of micromation; and the method and the apparatus can be applied to fields of prosthesis models, industrial design, mechanical manufacturing, three dimensional scene display, entertainment and art, and the like.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

Blowing pollinator and method for using same to carry out blowing pollination

The invention relates to the field of cross breeding, in particular to a blowing pollinator and a method for using the same to carry out blowing pollination. The blowing pollinator comprises a fan and an air guide; the air outlet of the fan is connected with the air guide, and the air outlet end of the air guide is connected with two air nozzles; each air nozzle is an adjustable air nozzle, and can adjust the angle between the jetted airflow and the horizontal plane; each air nozzle is perpendicular to the air outlet end of the air guide, i.e., the flowing direction is changed by 90 degrees after the airflow enters the air nozzle via the air guide; the two air nozzles respectively face up at the left and the right of the air outlet end of the air guide; and the fan is connected with a storage battery for supplying power and a flow velocity regulator for regulating the velocity of the airflow. The blowing pollinator and the blowing pollination method provided by the invention can utilize the airflow to directly blow the mature pollen of male parents into the air over a male parent area, the pollen then spontaneously falls to finish the pollination process, and thereby the setting rate of the cross breeding can be remarkably increased.
Owner:SICHUAN CHUANLONG TRACTORS MFG CO LTD

Apparatus and method used for analyzing effects of shot blast materials

InactiveCN103411840AMaterial strength using single impulsive forceClassical mechanicsImpact velocity
The invention discloses an apparatus and a method used for analyzing effects of shot blast materials. The apparatus comprises a peening machine, a support for plates, a displacement sensor, a laser velocity sensor, a controller and an X-ray emitter; the nozzle of the peening machine is vertical to the plane of a plate; the laser velocity sensor is used for measuring the velocity of the shot blast materials; and the displacement sensor is used for recording the displacement of the shot blast materials; and the X-ray emitter is used for measuring the plate residual stress caused by the impact of the shot blast materials. The apparatus and method are capable of measuring the change of the impact velocity of the shot blast materials on the plate and the plate residual stress, so that the apparatus and the method are capable of analyzing influences of different shot blast parameters on the effects of the shot blast materials.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Cleaning system for honeycomb-shaped plasma free radicals

InactiveCN102310063AUniform and stable dischargeIncrease productivityPhotosensitive material processingCleaning using gasesPlasma generatorHoneycomb
The invention relates to a cleaning system for honeycomb-shaped plasma free radicals. The cleaning system comprises a mechanical arm, a plasma generator, a rotary base and an air inlet system. The cleaning system is characterized in that: the plasma generator is fixed on the mechanical arm; the plasma generator consists of upper electrodes and a lower electrode which are mutually insulated and is positioned in a shell; the upper electrodes are installed on an insulating board and consist of a plurality of column-shaped electrodes which are wrapped by an insulating medium; the lower electrode is a metal electrode which is provided with honeycomb-shaped holes; an air inlet chamber is arranged between the upper electrodes and the lower electrode; each column electrode in the upper electrodes penetrates through the air inlet chamber and inserts into a honeycomb-shaped hole of the lower electrode to form a certain discharging gap with the honeycomb-shaped hole; the discharging gaps penetrate through the air inlet chamber; the air inlet chamber is connected with a high-pressure air source through an air conduit; and plasmas are generated in the honeycomb-shaped holes and are sprayed on the silicon chip which is placed on the surface of a rotary chassis from the honeycomb nozzles of the lower electrode under the drive of air pressure, so that the photoresist and the organic pollutants on the surface of the silicon chip are eliminated.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI

Inverter electric welding machine device with adjustable electric arc

InactiveCN101823176AImprove stabilityImprove practicalityElectrode vibration holdersShielding gasCompression screw
The invention relates to an inverter electric welding machine device with adjustable electric arc, which comprises a welding host machine, a welding torch, a liquid cooling system, a compressed air supply device, a protective gas supply device and an electric arc adjusting device, wherein the welding torch comprises a handle, a main cylinder body, a nozzle, an outer bushing, an inner bushing, a compression screw, a tungsten stick, a ceramic sleeve and a fixed sleeve. An electric arc adjusting device comprises an electric adjusting mechanism, and a control circuit of the electric arc adjusting device mainly consists of a push-and-pull coil and a reversing switch; the direction of current can be changed by switching the reversing switch, namely, the magnetic induction polarity of the push-and-pull coil can be changed, so that the moving direction of an induction magnet coil is forced to be changed, and the inner and the outer bushings of the welding torch are driven to change the moving direction of the tungsten stick; and a manual adjusting mechanism consists of an adjusting disc and a rotating sleeve, wherein the adjusting disc is manually rotated to drive the rotating sleeve to rotate, and the inner and the outer bushings moves up and down to drive the tungsten stick to move by mechanical transmission. The inverter electric welding machine device has the advantages that one welding machine can realize two electric arc types; free electric arc continuous compression can be converted into plasma electric arc; and the structure is simple, and the use is convenient.
Owner:上海新亚电焊机有限公司

Automatic carbon dioxide fire extinguishing system

InactiveCN103656922AImprove performanceEasy to clean up after a disasterFire rescueFire detectorUnit system
The invention discloses an automatic carbon dioxide fire extinguishing system and relates to a fire extinguishing system. The system comprises a plurality of independent unit systems, wherein each unit takes charge of a corresponding protective zone; carbon dioxide storage bottles are suspended on a fire extinguishing agent bottle group bracket; each carbon dioxide storage bottle is connected with a collecting pipe through a high-pressure hose; selector valves for combining distribution systems are arranged between the collecting pipe and a master pipeline; each selector valve corresponds to one protective zone; a fire extinguishing agent delivery pipe extends into a fire protection zone; a nozzle is arranged at the tail end; a fire detector is arranged inside each protective zone; a start steel cylinder is connected with each carbon dioxide storage bottle through a start pipeline. The system is efficient and reliable automatic fire extinguishing equipment, can automatically detect a fire, automatically alarm and automatically put out a fire, comprises three operation modes (full-automatic start, manual start and mechanical emergency start), adopts the carbon dioxide as the fire extinguishing agent, does not contaminate articles, is simple to clean after a fire disaster, good in insulativity, low in cost, convenient to install, reliable in performance, efficient and timely.
Owner:徐连宽

Spinning dust collecting device for spinner

ActiveCN107354546AImprove adsorption capacityThe downward movement of the adsorption cover is beneficial to adjust the adsorption and facilitateAuxillary apparatusCleaning using liquidsEngineeringElectric control
The invention discloses a spinning dust collecting device for a spinner. The spinning dust collecting device comprises a supporting frame, a first electric push rod, a dust removal pipe, an induced draft fan, a movable box, a second electric push rod, a push block, an infrared receiver, a first filter net, a second filter net, an infrared transmitter, a high-pressure nozzle, a timer and a PLC. Supporting legs are fixedly welded to the periphery of the bottom of the supporting frame, and the bottoms of the supporting legs on the two adjacent sides are connected through a fixing plate, a plurality of fixing bolt holes are formed in the fixing plate, an electric control box is fixedly arranged on the supporting legs through bolts, a control board is installed on the electric control box, the timer and the PLC are installed inside the electric control box, the inner walls of the two corresponding sides of the supporting frame are connected through a sliding rail, and a servo motor is fixedly arranged on one side of the top of the sliding rail. The spinning dust collecting device is convenient to use, easy to operate and capable of removing dust conveniently, improving the dust removal effect and avoiding secondary pollution.
Owner:南通德和布业有限公司

Glaze spraying device for mosaic tile manufacturing

ActiveCN106313288ASuitable temperatureGood glazing effectCeramic shaping apparatusViscosityMaterials science
The invention relates to a glaze spraying device, in particular to a glaze spraying device for mosaic tile manufacturing. The technical problem to be solved by the invention is to provide the glaze spraying device for mosaic tile manufacturing with uniform glaze spraying. In order to solve the technical problem, the invention provides the glaze spraying device for mosaic tile manufacturing. The glaze spraying device for mosaic tile manufacturing comprises a placing plate, a first slide rail, a first slide block, a first thumb cylinder, a second thumb cylinder, a second slide block, a second slide rail, a liquid extracting pump, a stirring blade, a glaze pulp box, a hose, a nozzle, a first connecting rod, a first bearing base, a first rotating shaft and the like; and a bracket is arranged on the ground. The glaze spraying device for mosaic tile manufacturing achieves the effect of uniform glaze spraying; the motor rotates to drive the nozzle to move left and right; an electric wheel works to drive a blank to move front and back, so that the glaze is uniformly sprayed on the blank in all directions; and the motor rotates to drive the stirring blade to rotate, so that the viscosity of glaze pulp is proper, the glaze spraying is more uniform, and the glaze spraying effect is better.
Owner:肇庆市宏润陶瓷有限公司

Automatic guide type spray irrigating machine and spray irrigating method for greenhouse

The invention discloses an automatic guide type spray irrigating machine and a spray irrigating method for a greenhouse. The spray irrigating machine comprises a differential steering chassis, a micro control system, a water supply system and a storage battery, wherein the differential steering chassis includes a vehicle frame, a left driving system, a right driving system and omnidirectional wheels, power is supplied to the left driving system and the right driving system through the storage battery to drive the spray irrigating machine to travel. As the differential steering chassis is employed, the spray irrigating machine can travel and steer automatically along with a guide line under the control of the micro control system, without needing manual removal or special rail-based transfer; and during the travelling, water in a water tank is pumped by a water pump and is sprayed through a nozzle to realize spray irrigation; a master controller is configured to calculate amount of deviation of the spray irrigating machine from the guide line during the travelling process and give a control command to control revolving speeds of a left electric motor and a right electric motor, so as to enable the spray irrigating machine to travel along the guide line all the time. The spray irrigating machine disclosed by the invention has the advantages that the labor intensity is reduced, the cost for greenhouse construction and spray irrigating machine investment is lowered, the running distance of a single spray irrigating machine is not limited, the spray irrigating area for the greenhouse is large, the structure is simple, the automation degree is high and the practicality is strong.
Owner:CHINA UNIV OF MINING & TECH

Cold burden laying method and casting starting technology of sizing nozzle open type continuous casting billets

ActiveCN105014028AAvoid dangerAvoid wastingSlagEngineering
The invention discloses a cold burden laying method and a casting starting technology of sizing-nozzle open type continuous casting billets. Crystallizer oil is firstly smeared before casting; a dummy bar where a dummy ingot hook and a cover plate are hooked is conveyed into a crystallizer; a gap is filled with heat-insulating materials; and then a broken steel drop layer, a cocoon-shaped cold burden layer and bowl-shaped cold burdens are sequentially laid. A crystallizer vibration mechanism, secondary cooling water and a draught fan are started. A ladle slide gate is opened, and molten steel is injected into a tundish. When the molten steel surface is 300-400 mm high, casting of the tundish starts; and after flames come up on the crystallizer for 4-5 s, casting starts when the molten steel surface rises to the position 250-350 mm away from an upper opening of the crystallizer. The starting pulling speed is 0.5 m/min; the speed is increased by 0.5 m/min every other 1-2 s; the pulling speed is increased to 2.5-2.8 m/min; the molten steel surface reaches the position 140-160 mm away from the upper opening of the crystallizer; and after the pulling speed is normal, slag fetching operation is performed in time. The cold burden laying method and the casting starting technology avoid the sputtering danger, waste and loss in the molten steel casting process; and the technical problems that because cold burden laying is not reasonable, pulling leakage is caused, and a dummy ingot hook head, the cold burdens and billet heads are not combined properly are solved.
Owner:玉溪新兴钢铁有限公司
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