초록 ▼

A gyrating nozzle spray gun includes a grip including an air inlet, a valve seat, a gas-delivery tube connected to the valve seat and terminating in a mating connection portion and a trigger operable for letting external compressed air go into the air inlet and the gas-delivery tube, an attachment t

A gyrating nozzle spray gun includes a grip including an air inlet, a valve seat, a gas-delivery tube connected to the valve seat and terminating in a mating connection portion and a trigger operable for letting external compressed air go into the air inlet and the gas-delivery tube, an attachment tube connected to the mating connection portion of the gas-delivery tube, and a gyrating pattern generator including a gas-supply tube connected to the mating connection portion and suspended in an accommodation chamber, a bearing mounted on a connecting portion, a coupling socket mounted on an outer race and a gyrating nozzle fastened to the coupling socket and rotatably disposed in an orifice and defining a gas accumulation chamber and an oblique jet hole for ejection of the intake flow of compressed air that goes through the air inlet, the gas-delivery tube and the gas-supply tube into the gas accumulation chamber.

대표청구항 ▼

1. A gyrating nozzle spray gun, comprising: a grip comprising an air inlet connectable to an external high-pressure air source for the intake of a compressed air, a valve seat, a gas-delivery tube connected to a front side of said valve seat, a trigger operable to open said valve seat for letting sa

1. A gyrating nozzle spray gun, comprising: a grip comprising an air inlet connectable to an external high-pressure air source for the intake of a compressed air, a valve seat, a gas-delivery tube connected to a front side of said valve seat, a trigger operable to open said valve seat for letting said compressed air flow into said gas-delivery tube, said gas-delivery tube comprising a gas-delivery hole in communication with said valve seat and said air inlet and a mating connection portion located at a distal end thereof around one end of said gas-delivery hole; anda gyrating pattern generator, said gyrating pattern generator comprising a gas-supply tube connected to said mating connection portion of said gas-delivery tube, said gas-supply tube comprising a connecting portion located at one end thereof remote from said gas-delivery tube and a gas-supply hole axially extending through two opposite ends thereof in communication with said gas-delivery hole, and a coupling socket, a bearing and a gyrating nozzle mounted at said connecting portion of said gas-supply tube, said coupling socket being mounted around said bearing and drivable by said gyrating nozzle to rotate relative to said bearing, said gyrating nozzle being mounted around said coupling socket, said gyrating nozzle comprising a gas accumulation chamber disposed in communication with said gas-supply hole of said gas-supply tube and an oblique jet hole obliquely forwardly extended from said accumulation chamber to the outside of said gyrating nozzle at an eccentric location. 2. The gyrating nozzle spray gun as claimed in claim 1, further comprising an attachment tube connected to said mating connection portion of said gas-delivery tube of said grip, and a gasket ring mounted around said mating connection portion and stopped between said attachment tube and said gas-delivery tube of said grip, wherein said mating connection portion of said gas-delivery tube of said grip comprises a mating connection screw rod extended from an outer end of said valve seat and defining therein a screw hole in communication with said gas-delivery hole; said attachment tube comprises a mating connection end piece located at one end thereof, and a mating connection screw hole defined in said mating connection end piece and threaded onto said mating connection screw rod of said gas-delivery tube of said grip; said gasket ring is mounted around said mating connection screw rod of said mating connection portion and stopped between said gas-delivery tube of said grip and said mating connection end piece of said attachment tube; said gas-supply tube of said gyrating pattern generator comprises a joining end piece located at an opposite end thereof and terminating in a threaded neck that is threaded into said screw hole in said mating connection screw rod of said gas-delivery tube of said grip. 3. The gyrating nozzle spray gun as claimed in claim 1, wherein said attachment tube further comprises an expanded orifice located at an opposite end thereof remote from said mating connection end piece in communication with one end of said accommodation chamber, said attachment tube being selected from the group of horn tubes, straight tubes and polygonal tubes. 4. The gyrating nozzle spray gun as claimed in claim 1, wherein said connecting portion of said gas-supply tube of said gyrating pattern generator comprises a coupling stub tube axially forwardly extended from one end of said gas-supply tube remote from said gas-delivery tube, and a tubular screw rod axially forwardly extended from said coupling stub tube; said bearing comprises an axle hole coupled to said coupling stub tube; said gyrating pattern generator further comprises a locknut threaded onto said tubular screw rod to stop said bearing at said coupling stub tube; said coupling socket comprises a retaining hole fastened to an outer race of said bearing, and an outer thread extending around the periphery thereof; said gyrating nozzle comprises an inner thread threaded onto said outer thread of said coupling socket. 5. The gyrating nozzle spray gun as claimed in claim 4, wherein the outer diameter of said coupling stub tube is smaller than the outer diameter of said gas-supply tube; the outer diameter of said tubular screw rod is smaller than the outer diameter of said coupling stub tube. 6. The gyrating nozzle spray gun as claimed in claim 4, wherein the outer diameter of said locknut is larger than the diameter of said axle hole of said bearing. 7. The gyrating nozzle spray gun as claimed in claim 4, wherein said inner thread of said gyrating nozzle is located in one side of said gyrating nozzle; said gas accumulation chamber of said gyrating nozzle is defined in said gyrating nozzle and inwardly extended from said coupling socket; said oblique jet hole of said gyrating nozzle is obliquely forwardly extended from said accumulation chamber to the outside of said gyrating nozzle at an eccentric location. 8. The gyrating nozzle spray gun as claimed in claim 1, wherein said gyrating nozzle of said gyrating pattern generator further comprises a through hole extended from said gas accumulation chamber to the outside of said gyrating nozzle and disposed at one lateral side relative to said oblique jet hole; said gas-delivery tube is a T-shaped three-way tube, comprising a bottom connection tube located at a bottom side thereof and mounted with a water tank, a dip tube connected to said bottom connection tube and inserted into said water tank for sucking a fluid from said water tank into said bottom connection tube, a water-delivery tube connected to said bottom connection tube in communication with said dip tube and inserted into said gas-delivery hole of said gas-delivery tube and terminating in a water outlet tip, said water outlet tip of said water-delivery tube being inserted into said through hole of said gyrating nozzle. 9. The gyrating nozzle spray gun as claimed in claim 8, wherein the diameter of said through hole is larger than the outer diameter of said water outlet tip of said water-delivery tube so that an annular gap is defined in said through hole around said water outlet tip of said water-delivery tube. 10. The gyrating nozzle spray gun as claimed in claim 1, further comprising an attachment tube connected to said mating connection portion of said gas-delivery tube of said grip, said attachment tube comprising a mating connection end piece located at one end thereof and connected to said mating connection portion, and an accommodation chamber axially extended from said mating connection end piece to an opposite end thereof and accommodating said gas-supply tube of said gyrating pattern generator.