Filter arranged at bottom water inlet of cement truck water tank

Abstract

The invention discloses a filter arranged at the bottom water inlet of a cement truck water tank. The filter comprises a flat plate with a round hole in the middle and a conical uniflow cylinder inserted into a water inlet pipeline, the conical uniflow cylinder is wide in the upper portion and narrow in the lower portion, the outer diameter of the upper portion of the conical uniflow cylinder is slightly larger than the inner diameter of the water inlet pipeline, and a uniflow valve is arranged at the small-diameter end of the bottom of the conical uniflow cylinder. The large-diameter end of the top of the conical uniflow cylinder is fixed below the round hole of the flat plate, the round hole is matched with the conical uniflow cylinder, a three-level filter screen is arranged on the upper surface of the flat plate, the inner-layer filter screen is tightly attached to the round hole of the flat plate and covers the inlet of the conical uniflow cylinder, and the middle-layer filter screen is tightly sleeved on the outer side of the inner-layer filter screen. The outer-layer filter screen is tightly sleeved on the outer side of the middle-layer filter screen in a cap shape, the bottom faces of the middle-layer filter screen and the outer-layer filter screen are tightly attached to the upper surface of the flat plate, and screen holes of the inner-layer filter screen, the middle-layer filter screen and the outer-layer filter screen are sequentially enlarged. Impurities can be prevented from being supplied to a dust remover by an injection pump, and blockage is not likely to happen.

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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