Figure 6. Slurry pump eye clogging

CR98_05
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6

a. Debris in pump eye.

section.

Figure 6. Slurry pump eye clogging.

dredge within a matter of minutes. A new

tion by sweeping debris up the grates and cutting

approach was needed that would exclude debris

it at the top. A tapered transition section behind

from the pump but not become clogged with the

the grates smooths the flow of water from a rec-

ubiquitous vegetation.

tangular cross-sectional opening to a 15-cm-

The solution is a cutter and grate system for

diam. hose adapter. Stiff tines are attached to the

the auger head (Fig. 7). The vertical grates are

auger flites to augment maceration of vegetation

attached to the front of the dredge head where the

prior to ingestion.

intake is located. A cutter bar, attached to the cen-

The original system was designed to function

ter of the auger, keeps the grates clear of vegeta-

as a bolt-on assembly for ease of modification

FPO

a. Side view of grates with cutter.

b. Debris extracted from gates, with pen

for size comparison

Figure 7. Test cutter and grate system for dredge augerhead intake.