Never paid much attention to the nozzles, they all need some sort of a mesh at the intake. Here I kept in mind to make the jet tube easily detachable for instant all underwater use/testing of different designs.ġ. Nonetheless, I refined my last (No 5) design even further. Now am I into collecting or processing lots of material? I really need to find what the setup will let me do best, and take it from there. I brought an underwater collector tube as well for testing. It floats all right.įield test: It did not work to my satisfaction either, the box is detached on the rocks behind. The platform has an array of nozzles and an attached plastic mesh basket for the battery and tools. The whole thing is becoming as clumsy as the original AP sluice. The 2 tubes in the back are "venturi relieve valves" to supply more water when the pump mix is pushed through. Similar riffles as in the PVC pipe design. With it comes a new attachable sluice box, also floater type. Less than one foot of water depth necessary. This is re-build No,3 w/o the floater styrofoam attached yet. I redesigned it constantly to make it workable in very shallow water. Because of shallow water, I came up with this floater platform, with the infinity jet attached below. I still got clogged up sluice box with even the limited gravel present, but I must keep in mind that the level when holding the whole contraption underwater can make a difference as well. To run lots of material through such devices is not suitable for my 24 volt pump. I need to make up my mind what I want to do: suck up and process a ton of gravel or suck out the crevices? As with the infinity jets, I made several with different properties.įield test.no gold but plenty of gravel. Not knowing better, I used 3 types of matting to (hopefully) catch the gold. The riffles are designed to be pulled out for cleaning when in operation. Putting riffles into a round pipe is a bit of a problem and I ended up with a double story gold separator, or so to speak. Once satisfied with the suction, it was time to design an underwater operated sluice box, just like the original but smaller. 45 decree intake, 90 degree intake.anything. I also experimented with the infinity chamber size, length and made adjustable ones. Once I figured out the building principle with the available material, I build them in in all sizes to find the smallest and largest design suitable for my 24 V pump. I am just used to hit the nail with the first blow, but not here.īeer and Mr Google came to the rescue, and the above picture is my first working infinity jet. I build half a dozen prototypes and none worked, to my frustration. I settled for an infinity, just could not get a workable venturi going. My first task was to build a functional venturi or infinity jet. This 1 km stretch of river has been heavily prospected. The gold source is about 300 meters upstream from the hills. Most gold is in rather shallow water, deep inside the thousands of crevices. The stainless steel nozzle supplied with the AP dredge was too bulky for my intended area. Li-polymer 20 AH 29.6V batteries in waterproof 3m deep and hard proof box. Next I resolved to use the pump and battery and build my own from PVC pipes.ĭC 36Volts/16A, 300 L/min heavy-duty pump (4700 gal/min) with fuse protection Not claiming I can build a better one, I tried to make modifications first, still no good. While it does suck, it jams up the box with gravel and just won't work. I bought this AP underwater gold dregde from Down Under and tested in the local (Taiwan) river with dismal result.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |