A vertical rocker nozzle nozzle structure and its processing technology

Abstract

The invention discloses a nozzle pipe structure of a vertical rocker nozzle and its processing technology. The nozzle includes an elbow, a nozzle and a welding part; the welding groove of the welding part is composed of a first unilateral groove on the elbow and a The second unilateral groove on the nozzle is composed of combinations, the first unilateral groove and the second unilateral groove are symmetrical about the symmetrical center line, and the first unilateral groove or the second unilateral groove is composed of multiple line segments . The first unilateral bevel or the second unilateral bevel includes an arc section, a first inclined section, a horizontal section, and a second inclined section. There is an angle a between the first inclined section and the center line of symmetry, and the second inclined section There is an included angle b between the center line of symmetry, the sum of the arc segment and the first inclined segment in the radial direction has a length h1, the second inclined segment has a length h2 in the radial direction, the welding in the h1 area is full of the first electrode, and the h2 area The inner weld is filled with a second electrode.

Description

technical field [0001] The invention relates to a pipe part, in particular to a nozzle structure and its processing technology. The nozzle structure is mainly used in large-range vertical rocker nozzles. Background technique [0002] Large and medium-sized rotary nozzles are mainly used for the end nozzles of large sprinklers, and can also be used for dust suppression in electric power, metallurgy, ports, mines, coal yards, dust suppression in feedlots, fire prevention, agriculture, irrigation and sewage treatment, etc. Usually the working environment of the nozzle is harsh, there is often a lot of dust on site, or the water source contains a lot of impurities, these factors have a significant impact on the reliability of the nozzle. At present, there are few domestic enterprises that can produce large and medium-sized nozzles, and most of the existing products are imitations of foreign prototypes, but the structure of large and medium-sized nozzles is relatively complicated...

AI Technical Summary

Problems solved by technology

The above connection method is used for short and medium-range rocker nozzles with low working pressure, which has little influence on the reliability of the nozzles. However, on large-range vertical rocker nozzles, due to factors such as high working pressure and harsh working environment, the nozzles will work for a period of time. Finally, the connecting part of the elbow and the nozzle tends to be displaced, which affects the normal reversing of the nozzle, or causes uneven force on the rocker arm and the deflector, which accelerates the failure and damage of the vertical rocker nozzle

[0004] There are also some vertical rocker nozzles that use welding to connect the elbow and nozzle of the nozzle. However, when the existing elbow and nozzle connectors are welded, there are certain defects in both structural design and processing technology, resulting in bending The connection between the head and the nozzle is deformed after welding, which leads to the deterioration of the mechanical properties of the elbow and the nozzle, such as cold cracks and hot cracks, which cause the nozzle to be distorted and deformed, and the assembly position of the elbow and the nozzle cannot be guaranteed, which reduces the Hydraulic performance and service life of nozzles

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