A filter placed at the water inlet at the bottom of the water tank of a cement truck

Abstract

The invention discloses a filter placed at the water inlet at the bottom of the water tank of a cement truck, which comprises a flat plate with a round hole in the middle and a conical single-flow cylinder inserted into the water inlet pipeline. The conical single-flow cylinder is wide at the top and narrow at the bottom. The outer diameter of the upper part of the conical single-flow cylinder is slightly larger than the inner diameter of the water inlet pipe, and a check valve is arranged at the small diameter end of the bottom of the conical single-flow cylinder, and the top large-diameter end of the conical single-flow cylinder is fixed on the round surface of the flat plate. Below the hole, the circular hole is matched with the conical single-flow cylinder, and a three-stage filter is arranged on the upper surface of the plate, in which the inner filter is closely attached to the circular hole of the plate, covering the entrance of the conical single-flow cylinder, and the middle layer The filter screen adopts a cap shape to tightly cover the outside of the inner filter, and the outer filter uses a cap to tightly cover the outside of the middle filter. The bottom of the middle filter and the outer filter are close to the upper surface of the plate. The sieve holes of the middle layer filter screen and the outer layer filter screen increase in turn. It can avoid the jet pump from supplying impurities to the dust collector and is not prone to clogging.

Description

technical field [0001] The invention relates to the field of oil well cementing, in particular to a filter placed at a water inlet at the bottom of a water tank of a cement truck. Background technique [0002] The cement truck dust collector adopts the mechanism of atomized liquid dust removal for dust removal. The atomized liquid droplet dust removal has irreplaceable advantages over other dust removal technologies. The atomization dust removal has low energy consumption, high efficiency, and is safe and reliable. The effect of the atomized droplets determines the quality of the dust removal effect. The atomizing nozzle used in the dust collector uses liquid flow to build internal high-speed rotation in the swirling flow, so that it has high angular momentum while flowing at high speed. Secondly, when the nozzle exits, it is mixed with the pressure difference of the air to achieve droplet rupture, which can Achieve a very good atomization effect. [0003] However, the ato...

AI Technical Summary

Problems solved by technology

And in daily use, in order to better clean the manifold of the cement truck, it is often necessary to backwash the manifold, which causes the residual cement slag in the manifold to recoil back into the water tank, so that the cement residue is stored in the water tank, and dust removal The diameter of the nozzle is only 3mm, so it is inevitable that it will be blocked during use

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