Dripless Atomizing Nozzle

摘要

A dripless atomizing nozzle may include a nozzle body having a liquid orifice in fluid communication with a liquid inlet, a gas orifice in communication with a gas inlet, and a liquid passage connecting the liquid inlet and the liquid orifice, and a piston body having a piston passage communicating with the gas inlet; the nozzle body may include a connecting portion shaped to enable the piston body to be selectively removed from and attached to the nozzle body. A piston positioned in the piston passage may include a stem and a bias element connected to move the piston and stem within the piston passage such that the presence of gas above a predetermined pressure in the piston passage overcomes a force of the bias element to displace the piston to move the tip away from the liquid orifice to open the liquid orifice.

主权项

1. A dripless atomizing nozzle comprising:
a nozzle body having a liquid inlet and a liquid orifice in fluid communication with the liquid inlet, and a gas inlet and a gas orifice in communication with the gas inlet, the liquid orifice and the gas orifice positioned on the body such that gas exiting the gas orifice mixes with and atomizes liquid exiting the liquid orifice; the nozzle body including a liquid passage connecting the liquid inlet and the liquid orifice; a piston body having a piston passage communicating with the gas inlet, such that the piston passage is pressurized by pressurized gas entering the gas inlet; a connecting portion on the nozzle body shaped to receive the piston body and enable the piston body to be selectively removed from and attached to the nozzle body; a piston positioned in the piston passage for slidable movement therein, the piston including a stem having a tip shaped and positioned to engage the liquid orifice; and a bias element connected to move the piston and stem within the piston passage, such that the presence of gas above a predetermined pressure in the piston passage overcomes a force of the bias element to displace the piston to move the tip away from the liquid orifice to open the liquid orifice, and the bias element displaces the piston to move the tip to engage and seal the liquid orifice in the absence of gas above the predetermined pressure in the piston passage.