Sand washing spray head for sand washing operation in ship coating operation and sand washing operation method thereof

Abstract

The invention discloses a sand washing spray head for sand washing operation in ship coating operation and a sand washing operation method thereof. The sand washing spray head comprises a water flow pipeline connected to a sand washing machine, wherein a fixing groove of a U-shaped structure is arranged in the output end of the water flow pipeline; a spray nozzle is arranged in the fixing groove;a rotating shaft is integrally arranged in the fixing groove; the top end of the rotating shaft extends to the outer side of the fixing groove; a gear is fixed to the position, close to the top end, of the outer wall of the rotating shaft; a force rod is integrally arranged at the top end of the rotating shaft; torsion rods are fixed to the two ends of the force rod respectively; and the ends, away from the force rod, of the torsion rods are connected to a rotating disc on the outer wall of the water flow pipeline. Through cooperative use of all the devices, the spraying area of the sand washing spray head can be rapidly adjusted, and the situation that sandy soil diffuses again on the outer wall of a ship along with water flow can be prevented while the sand washing difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field related to coating, in particular to a sand washing nozzle for sand washing operation in ship coating operation and a sand washing operation method thereof. Background technique [0002] Ships need to clean the surface of the plywood and the hull before painting. The existing sand washing device exerts an impact force on the sand body through the sprayed water column, thereby achieving the purpose of removing sand. The sand washing process is mainly divided into two types: One step is to peel off the sand on the surface of the hull, and the other is to flush out the stripped sand on the hull. For the personnel involved in the sand washing work, it is more difficult to flush the sand out of the hull because A small amount of sand will flow on the hull deck with the water flow, making the sand washing operation more difficult. [0003] In order to adapt to the rapid development of the shipbuilding industry, i...

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Problems solved by technology

[0002] Ships need to clean the surface of the plywood and the hull before painting. The existing sand washing device exerts an impact force on the sand body through the sprayed water column, thereby achieving the purpose of removing sand. The sand washing process is mainly divided into two types: One step is to peel off the sand on the surface of the hull, and the other is to flush out the stripped sand on the hull. For the personnel involved in the sand washing work, it is more difficult to flush the sand out of the hull because A small amount of sand will flow on the hull deck with the water flow, making the sand washing operation more difficult

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