| 摘要 |
Improved airless spray nozzles and methods and means for making them. A spray nozzle tip having a central longitudinal passage terminating in an outlet orifice is provided with a single lateral inlet to the passage. The opposite open end of the passage is closed to form a turbulence chamber by means which may be removable or detachable and may be yielding or resilient. The lateral inlet is related in size to the outlet orifice and is in the form of a slot having transverse faces which lie in planes that intersect in a line which lies in a plane normal to the longitudinal axis of the passage. The nozzle tip may be mounted in a carrier. The nozzle tip is readily cleanable by a cleaning probe inserted through the lateral inlet. The nozzle tip is made from a preformed blank having an internal passage by a grinding wheel of the proper shape and size. The effective areas of the inlet and outlet orifices are determined during their cutting by passing air through the passages and measuring the rate of flow from the lateral inlet and from the outlet orifice.
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