초록 ▼

In accordance with an illustrative embodiment of the present invention disclosed herein, a liquid propelled blast nozzle apparatus includes a body having first and second bores which receive, respectively, a pressurized flow of sand particles and a high pressure and high velocity flow of propulsion

In accordance with an illustrative embodiment of the present invention disclosed herein, a liquid propelled blast nozzle apparatus includes a body having first and second bores which receive, respectively, a pressurized flow of sand particles and a high pressure and high velocity flow of propulsion fluid, a nozzle assembly on the body having a third bore for directing a blast of liquid propelled sand particles onto a surface to be cleaned, the respective bores defining axes which intersect one another within the bore of the nozzle assembly, the axis of the first bore intersecting the axis of the third bore at an angle of about 3½°, and the axis of the first bore intersecting the axis of the second bore at an angle of about 7½°. The first and third bores preferably are lined with a suitable wear and erosion resistant material such as tungsten carbide.

대표청구항 ▼

Liquid propelled abrasive cleaning apparatus comprising: a generally tubular body having a first bore formed therein for receiving a flow of blast particles, said first bore having a first longitudinal axis, said body having a second bore formed therein for receiving a propulsion fluid under high pr

Liquid propelled abrasive cleaning apparatus comprising: a generally tubular body having a first bore formed therein for receiving a flow of blast particles, said first bore having a first longitudinal axis, said body having a second bore formed therein for receiving a propulsion fluid under high pressure and at high velocity and directing such fluid against said blast particles, said second bore having a second longitudinal axis that intersects said first axis; and an outlet nozzle on said body for delivering blast particles propelled by said fluid against a surface to be cleaned, said outlet nozzle having a third longitudinal axis, said first, second, and third longitudinal axes intersecting at a common point in said outlet nozzle, said first axis being inclined with respect to said third axis at an angle of about 3.5°, and wherein said second bore has an entrance end portion formed by a frusto-conical surface, and further including a nozzle insert having a frusto-conical outer surface, said nozzle insert being positioned in said entrance end portion with the outer end face thereof extending outwardly beyond the entrance end of said second bore.