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310results about How to "Improve the deposition effect" patented technology

Electrostatic spraying type unmanned helicopter pesticide applying system

The invention discloses an electrostatic spraying type unmanned helicopter pesticide applying system. The system comprises an unmanned helicopter having a landing gear, a supporting frame, a storage battery, a high voltage electrostatic generator, an electric diaphragm pump, a pesticide box and two sets of electrostatic spraying devices, wherein the supporting frame and the landing gear are fixed; the storage battery, the high voltage electrostatic generator, the electric diaphragm pump and the pesticide box are fixed on the supporting frame; the electrostatic spraying devices are symmetrically arranged on both sides of the unmanned helicopter; and a liquid outlet of the pesticide box is communicated with a liquid inlet of the electric diaphragm pump, and a liquid outlet of the electric diaphragm pump is communicated with the liquid inlets of the electrostatic spraying devices by a tee joint respectively. The system has the advantages that the size of the sprayed charged droplets is quite small, so the droplets are high in deposition effect and uniformly distributed, in particularly, the droplets can be attached to the back surfaces of leaves of plants, the effective utilization rate of pesticide is guaranteed and the drift loss of pesticide is lowered; and the spraying amount can be remotely controlled, so the spraying amount of the system can be changed along with the change of the flying speed.
Owner:NANJING FORESTRY UNIV

Jet rod spraying machine and jet rod replacing method thereof

InactiveCN101816990AConvenient row spacing adjustmentImprove efficiencyLiquid spraying apparatusFixed frameAerospace engineering
The invention relates to a jet rod spraying machine which comprises a suspension assembly, more than two jet rod air curtain assemblies, a liquid medicine transport assembly and an air supply assembly, wherein a suspension rod of the suspension assembly is provided with two fixed frames; two screwed holes have the opposite rotating directions; telescopic rods are installed on the two fixed frames; adjusting rods are rotatablely connected on the telescopic rods; fixed jet rods of the jet rod air curtain assemblies are connected with two movable jet rods by a jet rod replacing mechanism; a fixed bracket is connected with the telescopic rods by a connecting rod; a flexible spray pipe and a flexible air curtain pipe are connected on the fixed jet rods and the movable jet rods, the flexible air curtain pipe is positioned at the outer side of the flexible spray pipe, and the flexible air curtain pipe is provided with more than one row of air outlet holes along the arrangement direction of a spray head; the liquid medicine transport assembly and the air supply assembly are respectively connected and communicated with the respective flexible spray pipe and flexible air curtain pipe, so that spraying areas with multiple shapes and line spacing changes are formed; and the jet rod spraying machine can realize target spraying of pesticide, reduces drifting of fog drops, and meets the requirements of diseases and pest control operation of field plants, fruit trees, nursery stock and fence-frame-type plants.
Owner:NANJING FORESTRY UNIV

Control system for boom sprayer and spraying compensation control method

InactiveCN102613161AReal-time control of working parametersPenetratingInsect catchers and killersSolenoid valveOptimal control
The invention relates to a control system for a boom sprayer and a spraying compensation control method. The control system comprises a hydraulic and mechanical driving part and an electric control part, wherein the hydraulic and mechanical driving part provides a proportional flow valve and a three-position four-way solenoid valve to control working parameters of the sprayer, such as the liquid pesticide pressure, fan delivery, spraying angle and distance from a spraying head to a crop canopy; the electric control part searches parameters in an optimal control index parameter table to work out the best spraying control parameters in the state according to acquired external information such as two-dimensional natural wind speed, environmental humiture and tool traveling speed; and then PID (Proportion, Integration and Differentiation) feedback control is performed on each parameter; further, an intelligent control method for the optimal control index is provided; a support vector machine is used for nonlinear characteristic modeling of spraying under a dynamic environment, and the optimal control parameter index table is established by using multi-objective optimization and storedin an SD (Secure Digital) card for reading by a spraying master control system; with the adoption of the above spraying control considering the dynamic variation of the natural environment and based on the optimal control parameter index table, the stability of a spraying system is effectively improved, and the spraying effect is ensured.
Owner:SHANDONG AGRICULTURAL UNIVERSITY

Powder-coated atomic layer deposition device

The invention discloses a powder-coated atomic layer deposition device. The powder-coated atomic layer deposition device comprises a powder container and a reaction cavity, wherein an inlet source hole is formed in one end of the reaction cavity; a gas inlet tube used for inputting reaction gas or carrier gas is arranged in the inlet source hole in a sealing mode; a cavity door is arranged at the other end of the reaction cavity; the powder container is arranged inside the cavity door; under driving of a power device, rotation can be realized; a gas inlet is formed in the powder container; the gas inlet tube enters an inner cavity of the powder container through the gas inlet; an ultrasonic vibrating rod is arranged inside the reaction cavity; and after the powder container enters the reaction cavity through a guide device, the outer side wall of the powder container is in contact with the ultrasonic vibrating rod. According to the powder-coated atomic layer deposition device disclosed by the invention, a rotary method is combined with an ultrasonic vibrating method, contact possibility of powder and reaction gas can be increased by rotation, and powder agglomeration can be relieved by energy generated by vibrations, so that powder is dispersed, and a uniform and compact film is finally coated on the surface of the powder.
Owner:HUST WUXI RES INST

Accurate aerial spraying control system and method for aircraft

The invention relates to an accurate aerial spraying control system and method for an aircraft.The accurate aerial spraying control system for the aircraft comprises a controller, a droplet particle size control unit, an airborne weather measurement unit and an airborne altitude measurement unit.The controller is connected with the droplet particle size control unit, the airborne weather measurement unit and the airborne altitude measurement unit.The airborne weather measurement unit is used for acquiring information of the environment where the aircraft is located.The airborne altitude measurement unit is used for acquiring information of the altitude of the aircraft relative to ground.The controller is used for calculating a target value of the particle size of sprayed droplets according to the information of the environment and the information of the altitude and sending a control instruction to the droplet particle size control unit according to the target value.The droplet particle size control unit is used for adjusting the particle size of droplets according to the control instruction.By means of the accurate aerial spraying control system and method for the aircraft, accurate control over a droplet depositing area is achieved, and the particle size of droplets can be accurately regulated and controlled according to environmental requirements, so that the ground depositing effect of droplets is optimized, influences of attitude changes of the aircraft on spraying are overcome, and the aerial spraying effect is improved.
Owner:BEIJING RES CENT OF INTELLIGENT EQUIP FOR AGRI

Porous polyaryletherketone material with bioactivity, and preparation method and application thereof

ActiveCN105233335AImprove the deposition effectOvercoming defects such as restricted bindingCoatingsProsthesisSpinal columnBiomedicine
The invention discloses a porous polyaryletherketone (PAEK) material with bioactivity, and a preparation method and an application thereof, and belongs to the field of biomedical materials. The method comprises the following steps: carrying out wet uniform mixing on PAEK powder and a calcium phosphate ceramic (CPC) spherical particle pore forming agent to obtain a mixture, filling a die with the mixture, applying a pressure to make the hard pore forming agent be arranged in a close packing approximating manner and remove superfluous PAEK powder, heating the die to realize fusion molding of the PAEK powder under hot pressing in order to obtain a PAEK / CPC body, and immersing the PAEK / CPC body in diluted hydrochloric acid to remove the pore forming agent CPC in order to obtain the porous PAEK material; and processing through concentrated sulfuric acid, and immersing in a simulated body fluid to obtain the bioactive porous PAEK material with a surface bone like apatite layer. The method has the advantages of simple process and good repeatability, and the obtained bioactive material has completely three dimensional through macro-pores and abundant surface micro-pores, and easily adjustable macro-porous dimension and amount of porosity, and can be used to prepare bioactive materials with a gradient pore structure. The bioactive porous PAEK material can be used to restore bone defects, and is especially suitable for being used in interbody fusion cages for spinal column restoration.
Owner:SICHUAN UNIV
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