Novel nozzle for high-pressure washer, and high-pressure spray gun

Abstract

The invention discloses a novel nozzle for a high-pressure washer. The novel nozzle comprises a nozzle body. The nozzle body is provided with a jet hole and a guide channel. One end of the guide channel is provided with a guide channel inlet, and the other end of the guide channel is provided with a guide channel outlet. The guide channel inlet is communicated with the guide channel outlet. The guide channel outlet is communicated with the jet hole. The guide channel is arc-shaped. The center line of the guide channel inlet of the guide channel and the axis of the jet hole form an included angle beta of 60-120 degrees. The novel nozzle for the high-pressure washer and a high-pressure spray gun have the advantages that the arc-shaped guide channel is formed in the front of the jet hole, and accordingly pressure loss of high-pressure water is low; the high-pressure water never bounces back, a jet jetted from the jet hole has a small radiation angle smaller than 5 degrees; the radiation angle of the jet jetted from the jet hole is small, and accordingly stress of the jet is concentrated, the jet can produce large impact force, and cleaning effect is better; the jet is concentrated, and accordingly point-to-point cleaning is achieved.

Description

technical field [0001] The invention relates to a novel nozzle and a high-pressure spray gun for a high-pressure cleaning machine. Background technique [0002] In aerospace precision parts, auto parts (steering pumps, crankshafts, etc.), construction machinery and mechanical devices in other industries, there are various blind holes, deep holes, and deep cross blind holes. According to the requirements of production accuracy and use accuracy, after the blind hole, deep hole, deep cross blind hole, etc. are processed, they need to be cleaned to remove burrs, oil stains, etc. In the prior art, a high-pressure cleaner is used to spray high-pressure water to clean the burrs. The high-pressure water is sprayed to the burr through the nozzle of the high-pressure cleaner to wash and remove the burr. figure 1 Shown is a sectional view of a high-pressure spray gun, and its structure includes a spray gun main body 1 and a nozzle head main body 2 . The spray gun main body 1 is prov...

AI Technical Summary

Problems solved by technology

The dispersion of the jet leads to the inability of the jet to concentrate the stress, which affects the cleaning effect

In the case of direct injection of high-pressure water, since the jet is easy to diverge, dead spots such as edges or convex and concave surfaces will cause cleaning blind spots, resulting in incomplete removal of product burrs

Since the axis of the drainage hole 21 is perpendicular to the axis of the injection hole 22, and the inner wall 211 of the drainage hole is perpendicular to the input direction of the high-pressure water, the inner wall 211 of the drainage hole will be subjected to the frontal impact of the high-pressure water, and this structure will also cause the nozzle head body 2 to be stressed , and the recoil force is also large, resulting in a large deformation of the spray gun as a whole in the process of water jetting, which is not conducive to long-term use

The similar structure has no diversion effect, and the concentration process of the stream will cause pressure loss, and the pressure loss is large, which will affect the injection pressure of the jet

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