Sea Dredge

[caslor]

Hi to all friends here

I am interesting in Dredging but not for Gold.

i am a sailman and where i live the sailing club that i am member  has problem with the harbor.
every year we have lot of sand deposites to the entrance of the harbor and make it dificult for the sailing boats to come out or come in (because the keel )

we thing to make a dredge in order to suction the extra sand and deposite to a next area


the hoses will be under water in all route  

we want to deposite the sand in a area  40 meters away (130 ft )

The dredge that we have made (from diy plans around the internet)  has  1'' 1/2  intake hose from the pump  , 8mm nozle (0,314 inch)  , 1'' 1/2  outlet ,   and the suction hose is also 1'' 1/2 pipe


our pump  is for 18m3/h  (79.251616 gallon (US)/minute)

From your experience it will do the jop? do we have to upgrade to a biger pump  or build a dredge with other dimensions?


thanks in advance 

[lbd]

At a quick glance without knowing all the details....but with a 1.5 inch hose going at its very fastest, will not move more than 3/4 cubic yard per hour... with out knowing the volume you want to moven I would guess you will not be fast enough....

It does not sound very suitable.

How many HP is the pump?

Can I ask where you are?

[RKC]

Apr 6, 2015 19:48:03 GMT 12 caslor said:

Hi to all friends here

I am interesting in Dredging but not for Gold.

i am a sailman and where i live the sailing club that i am member  has problem with the harbor.
every year we have lot of sand deposites to the entrance of the harbor and make it dificult for the sailing boats to come out or come in (because the keel )

we thing to make a dredge in order to suction the extra sand and deposite to a next area


the hoses will be under water in all route  

we want to deposite the sand in a area  40 meters away (130 ft )

The dredge that we have made (from diy plans around the internet)  has  1'' 1/2  intake hose from the pump  , 8mm nozle (0,314 inch)  , 1'' 1/2  outlet ,   and the suction hose is also 1'' 1/2 pipe


our pump  is for 18m3/h  (79.251616 gallon (US)/minute)

From your experience it will do the jop? do we have to upgrade to a biger pump  or build a dredge with other dimensions?


thanks in advance 

G'day caslor,

The type of dredge we discuss here (gold dredges) would not be suitable as they cannot move sand the distance you require. You might be better to look at gravel pumps, or make your own version of a sand dredge. If money is no object, then, a Vortex 4 inch ROV dredge would work ( www.youtube.com/watch?v=mDeALuJQSjI ). When moving sand you have to take into account that sand will most likely redeposit in the area it was removed from. So, it would not be a one-off job, but a continuous operation requiring equipment that will last. Piranha dredges would do the job ( www.piranhapumps.com/PS135E_1.html ).

Regards,
Rob (RKC)