Abstract: A nozzle for supplying lubricants to conveyors comprises a plastic housing for a spring loaded valve which can be adjusted to produce either a fan stream or a needle point stream with a minor adjustment of the valve. Contaminating material can be removed from the device by a purge tool which interfits with the valve, and the tool can easily be hand manipulated to lift the valve against the spring loading and effect purging.

Abstract: A pneumatically controlled system for cleaning conveyor belts is provided which applies cleaning compounds such as detergents and chemicals to the belts through nozzles positioned between the belts. Following application of the cleaning compounds, a rinse cycle is then applied to remove dirt and residue from the conveyor belts, and the process is repeated at suitable intervals. The belt cleaning process may be carried out during normal production operations or after production hours.

Abstract: An air actuated apparatus and method for lubricating conveyors such as chains and belts is disclosed, comprising a device including air actuated valves which are alternately opened and closed by a drive system powered from the conveyor movement. The drive system is connected to a delay valve which controls a fluid valve that enables lubricating solution to be applied to the conveyor. The apparatus and method are particularly suited for conveyors operating at high speed, and may also be used to control a plurality of lubricating applicators for different conveyors in a plant.

Abstract: An apparatus and method for lubricating conveyors and belts used in the food industry is disclosed, comprising a device including valves which are alternately opened and closed by an actuating device driven from the conveyor movement. The valves supply a lubricant which is fed to output nozzles for spraying onto the conveyors for lubricating purposes, and the valves will only feed lubricant when the conveyor is moving. Consequently, lubricant and water wastage are significantly decreased, along with excess sewage charges, and the need for a conventional electrically driven solenoid system for controlling the output of lubricant is eliminated.

Abstract: A spray nozzle comprises a hollow body having an inlet, an outlet and a fluid flow passage therebetween. The body contains a pressure-responsive or a pressure responsive and temperature responsive valving element that increases the effective area of the outlet in response to an increase in pressure or an increase in pressure and/or temperature. In a preferred embodiment, the outlet includes a restricted orifice and an unrestricted orifice, and the valving element is movable within the body between a first position in which the restricted orifice is open and the unrestricted orifice is closed, and a second position in which the unrestricted orifice is open. The valving element is biased in the first position by a spring which applies a selectable biasing force that defines a threshold pressure, so that the valving element is moved to the second position by a dynamic pressure of the fluid flowing through the flow passage that is greater than the threshold pressure.

Abstract: A spray nozzle comprises a hollow body having an inlet, an outlet and a fluid flow passage therebetween. The body contains a pressure-responsive or a pressure responsive and temperature responsive valving element that increases the effective area of the outlet in response to an increase in pressure or an increase in pressure and/or temperature. In a preferred embodiment, the outlet includes a restricted orifice and an unrestricted orifice, and the valving element is movable within the body between a first position in which the restricted orifice is open and the unrestricted orifice is closed, and a second position in which the unrestricted orifice is open. The valving element is biased in the first position by a spring which applies a selectable biasing force that defines a threshold pressure, so that the valving element is moved to the second position by a dynamic pressure of the fluid flowing through the flow passage that is greater than the threshold pressure.