Spray blast pump with movable spray core

Abstract

The invention relates to a blast pump of a low-pressure atomizing lance for gardens, in particular to a manual spray blast pump with a movable spray core for spraying water or pesticide under low pressure in an atomizing mode and belongs to the technical field of blast pumps in an injection device. On the basis of adding a labyrinth seal on an improved pump body and improving an original O-shapedpiston ring into an L-shaped piston ring, an original fixed spray core is replaced by the movable spray core and two original grooves are replaced by a plurality of grooves, particularly four parabolic grooves so as to enhance ejection quality. The movable spray core is provided with a plurality of parabolic grooves (35a), particularly four grooves, the grooves ascend spirally and become smaller from lower parts to tops and the top of each groove is provided with a small groove (35b) of which the bottom is parabolic so as to contribute to parabolic flow; the top of the movable spray core is provided with a cone (35c), so the movable spray core is matched with the jet orifice of a nozzle (37); and the small groove (35b) is communicated with the core (35c) and the groove (35a), so fluid flows rotationally on the lower part and is accumulated on the top.

Description

technical field [0001] The invention relates to an air pump for low-pressure atomizing spray guns used in gardening and gardening, in particular to a manual spray air pump with a movable nozzle for low-pressure atomization spraying water or pesticides, and belongs to the technical field of air pumps in spraying devices. Background technique [0002] The air pump used for gardening and horticultural low-pressure atomizing spray guns is widely used to inflate in the way selected by people's preferences. The nozzle of the adornment suction pipe (11) on the pump body of the existing air pump, and the water outlet of the pump cover (5), are because the adornment suction pipe (11) on the pump body of the air pump is pushed down by the pump cover. The mouth of the pipe, and screwed into the large threaded bottle mouth of the big blow molding container by the internal thread of the pump cover (5), it is conceivable that the mouth of the described suction pipe (11) is installed, and ...

AI Technical Summary

Problems solved by technology

The nozzle of the adornment suction pipe (11) on the pump body of the existing air pump, and the water outlet of the pump cover (5), because the adornment suction pipe (11) on the pump body of the air pump is pushed down by the pump cover The mouth of the pipe, and screwed into the large threaded bottleneck of the large blow molding container by the internal thread of the pump cover (5), it is conceivable that the mouth of the described suction pipe (11) is installed, and the mouth of the pump cover (5 ) outlet, the seal between the two, anti-leakage is a long-standing problem

Secondly, the long-term sealing of the piston ring is difficult to prevent leakage.

Furthermore, the nozzle of the low-pressure atomizing spray gun, especially the non-moving riser core also affects the uniform quality of the ejected product

Images