Airless spray nozzle assembly

An airless spraying equipment comprising:

• a spray tip guard;
• a spray tip configured to be inserted into the spray tip guard perpendicularly to the axis of the spray tip guard;
• a handle arranged on one end of the spray tip;
• a bevel arranged on an other end of the spray tip;
• a retaining shoulder;
• a ring collar;
• a mounting hole having a channel axis;
• a pre-atomizing component;
• and
• a tip atomizing component,
• wherein the pre-atomizing component and the tip atomizing component are connected to each other sequentially along the channel axis, in a fluid stream direction,
• wherein the pre-atomizing component further includes:
• a feeding channel,
• a pre-atomization channel, and
• at least two pre-atomization regulating channels, and
• wherein the feeding channel, the pre-atomization channel, and the at least two pre-atomization regulating channels are coaxial hollow channels sequentially defined and connected along the channel axis inside the pre-atomizing component;
• and
• a saddle seal assembly configured to be inserted into the spray tip guard along the axis of the spray tip guard,
• wherein the saddle seal assembly includes:
• a metal sealing sleeve including a first saddle-shaped semi-cylinder surface matching with an outer surface of the spray tip to form an outer hard sealing structure;
• a cylindrical elastic seal including a second saddle-shaped semi-cylinder surface matching with the outer surface of the spray tip to form an inner flexible sealing structure;
• and
• a metal sleeve insert includes a hollow cylinder shape that matches an inner surface of the cylindrical elastic seal,
• wherein a first end portion of the cylindrical elastic seal is configured to be inserted into the metal sealing sleeve,
• wherein the first saddle-shaped semi-cylinder surface and the second saddle-shaped semi-cylinder surface are configured to be spliced to form a continuous saddle-shaped semi-cylinder surface, to thereby seal a stepped inlet hole of the airless spraying equipment,
• wherein the metal sleeve insert is attached onto the inner surface of the cylindrical elastic seal,
• wherein the tip atomizing component further comprises a turbulence chamber, an outlet passage, and an outlet orifice,
• wherein the turbulence chamber, the outlet passage, and the outlet orifice are coaxially defined and sequentially connected along the channel axis inside the tip atomizing component,
• wherein the turbulence chamber is a cylindrical cavity,
• wherein a frustoconical passage is arranged between the turbulence chamber and the outlet passage,
• wherein the frustoconical passage and the turbulence chamber are coaxial, and the outlet passage is a cylindrical passage that extends from the turbulence chamber to the outlet orifice,
• wherein the feeding channel, the pre-atomization channel, and the at least two pre-atomization regulating channels form a cylinder-shaped hollow structure having passages with changing dimensions,
• wherein the pre-atomization channel is a cylindrical passage having a diameter of about 0.4 mm-0.8 mm, and
• wherein the at least two pre-atomization regulating channels further includes:
• a first pre-atomization regulating channel and a second pre-atomization regulating channel each having a frustoconical shape, and wherein a wide outlet of the first pre-atomization regulating channel is arranged to be connected to a wide outlet of the second pre-atomization regulating channel.