Abstract:
A nozzle for spraying apparatus to distribute crop treatment liquid. The nozzle is of general ogee shape with a base and an upper wall spaced from the base and connected to it by side walls. The upper wall extends from the apex of the base partially along the base to terminate in a trailing edge. The nozzle is placed in a high velocity air stream and liquid introduced between the base and upper wall. The high velocity airstream atomizes the liquid and distributes it in the surrounding environment. The nozzle is particularly useful in electrostatic spraying apparatus and may be made of plastics material to inhibit induction of electrostatic charge on the nozzle.
Abstract:
An electrostatic spray coating apparatus is disclosed which comprises a spray nozzle containing both air and liquid discharge ports, an inductive charging device or charging electrode located exteriorly of the discharge ports and attached to the spray nozzle, and electrical connections for applying an electric potential to the inductive charging device. The inductive charging device or charging electrode creates a charging zone, and is preferably positioned so that ambient air is mixed with air and fluid exiting from the discharge ports within the charging zone.
Abstract:
A spray head for use with conventional air-atomizing spray equipment is disclosed which has spray-forming means that includes a secondary atomization annulus which provides improved atomization of liquid materials and which is especially suitable for spray devices having electrostatic induction charging means. The secondry annulus minimizes deposition on the spray head of particles electrically charged with a polarity opposite that of components of the spray head and provides re-atomization of sprayable material which collects on the walls of the nozzle.
Abstract:
A light-weight, portable power pack for supplying a high voltage output to an electrostatic spray gun from a low voltage input is disclosed. The power pack is cylindrical in shape with an axial opening adapted to receive the discharge channels of the spray gun so that it may be mounted on and may form a part of the spray gun and is detachable therefrom for replacement purposes. The power pack comprises a power supply circuit including a square wave oscillator connected through a square-loop, tape-wound core transformer to a voltage multiplier network for converting a low voltage DC to a high voltage DC for induction charging of material discharged from the spray gun, the circuit being encapsulated in an epoxy resin material to provide a suitable mounting case therefor. The case is molded into a suitable shape and is attached to the front of the gun by means of screws, bolts, a bayonet type connection or other suitable fastening means, the power pack being provided with external contacts which serve to engage corresponding contacts on the spray gun to provide an electrical connection through the gun to the power source, which may be a battery pack carried by the operator, and to engage coresponding contacts on the inductive charging device for the spray gun. The power pack can form the forward barrel portion of the spray gun with the discharge channels extending through the center of the case, or can be incorporated into detachable accessories such as a gas shroud forming chamber mountable on the forward barrel portion.
Abstract:
A product comprising a mat of fibers prepared by electrostatically spinning an organic material and collecting the spun fibers on a suitable receiver.
Abstract:
An improved electrostatic spray charging device for spray guns is disclosed. The device comprises an adapter formed from a dielectric material in the shape of a generally cylindrical tube adapted at one end to be secured to the end of a conventional spray gun and constructed at the second end to provide an inductive charging field for materials discharged by the spray gun. The second end of the adapter is formed, in the preferred embodiment, into two diametrically opposed lobes, each of which carries on its interior surface at least one charging plate to which a d.c. voltage on the order of 10-20 KV is applied. The exterior surface of each lobe carries an electrically grounded electrode which preferably is annular in shape to provide an electric field configuration that prevents accumulation of charged spray particles on the exterior surfaces of the adapter.
Abstract:
There is provided an electrostatic spraying device equipped with a spray nozzle, a support rod, a charging section, a outer cover, a cylindrical body of which one end in an axial direction is attached to an inner surface of a bottom wall of the outer cover, a water intrusion prevention portion which is provided in a middle portion of the cylindrical body in the axial direction to surround the cylindrical body in a circumferential direction and increases in diameter toward the other end of the cylindrical body in the axial direction, and an inner cover which is provided at the other end, covers the water intrusion prevention portion to surround the cylindrical body in the circumferential direction, and opens toward the inner surface, wherein a member that constitutes a part of a power supply path to the charging section is held by the other end.
Abstract:
An electrostatic nozzle and a minimal quantity lubricating and grinding system for a controllable jet. An electrostatic nozzle includes a nozzle core, an upper nozzle body being connected above the nozzle core; an empty space being formed between the upper nozzle body and the nozzle core for storing compressed air and decompression; a lower nozzle body being connected below the nozzle core; a gas-liquid mixing chamber, an acceleration chamber, and a nozzle outlet being sequentially disposed inside the nozzle core from top to bottom; and micro-convex bodies being evenly arranged on an inner wall of the acceleration chamber.
Abstract:
An electrostatic atomizer for liquids, in particular cosmetics, is proposed, at least comprising a housing, an electrical energy source, an activation mechanism, control electronics, a high-voltage source, a liquid tank, a delivery device and atomizer nozzles, the control electronics and the high-voltage source being arranged in an interior space of the housing. It is provided that the control electronics either comprise at least one sensor or comprise at least one transmitting and/or receiving module or comprise at least one sensor and at least one transmitting and/or receiving module.
Abstract:
An electrostatic oiling system for use with single blanks in batch systems having an open spray chamber without the need for a negative vacuum chamber. Further, the provided electrostatic oiling system may utilize induction beams and a charge wall that allows for utilization of a smaller vacuum system. Further, the provided electrostatic oiling system may provide variable blank coverage without the need for metered pumps.