Self-suction sand dredger

Abstract

The invention discloses a self-suction sand dredger. The self-suction sand dredger comprises an adapter, a mortar pump and a circulating water tank, wherein the mortar pump and the circulating water tank are both arranged in a cabin of the sand dredger; a mortar pipe is arranged at the feeding end of the mortar pump, and the mortar pipe comprises a mixing pipeline and a sand inlet pipeline extending out of the bottom of the dredger; the discharging end of the mixing pipeline is connected with the feeding end of the mortar pump; the sand inlet pipeline is arranged on the side wall of the mixing pipeline and communicates with the mixing pipeline; the inner diameter of a water outlet end pipeline of the circulating water tank is greater than that of the mixing pipeline; one end of the adapter communicates with the water inlet end of the mixing pipeline, and the other end of the adapter communicates with the water outlet end of the water outlet end pipeline of the circulating water tank. The inner diameter of the mixing pipeline is set to be smaller than that of the water outlet end pipeline of the circulating water tank, and the mixing pipeline communicates with the water outlet end pipeline through the adapter. Therefore, when the liquid enters the mixing pipeline, the cross sectional area of the pipeline is reduced, so that the flow rate of the liquid is increased, the gravel sucked into the mixing pipeline can be quickly fed into the next process, and the condition that the pipeline is blocked by the gravel is avoided.

Description

technical field [0001] The invention relates to the technical field of sand dredging ships, in particular to a self-priming sand dredging ship. Background technique [0002] Sand dredgers generally refer to dredgers. The dredger is a special machine for dredging sand in the river. The sand mining process is as follows: firstly, the sand and gravel in the river channel are pumped together with water to the relevant sand-water separation device through the mortar pump, then the sand and gravel are separated from the water in the sand-water separation device, and finally the sand and gravel are sieved, and the The stone particles and other sundries are removed to obtain the required sand. However, in the process of pumping the sand in the river to the sand-water separation device, the flow rate of the liquid at the feed end of the mortar pump is often insufficient, and the sand and stone will block the pipeline. However, most of the dredging ships such as the utility model p...

AI Technical Summary

Problems solved by technology

However, in the process of pumping the sand in the river to the sand-water separation device, the flow rate of the liquid at the feed end of the mortar pump is often insufficient, and the sand and stone will block the pipeline.

However, most of the sand dredging ships such as the utility model patent CN00212002.X disclosed that the "multifunctional sand dredging ship" is dedicated to solving the problem of how to unload sand cleanly, without considering the problem of sand and gravel blocking the pipeline due to insufficient flow velocity in the pipeline.

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