Seriously new thinking...
Grit Remover and Solids Disintegrator
The enemy of effluent irrigation pumps and pipe lines is grit - it wears pumps and settles in pipe lines where it can block them. Dairy yards are sources of sand, stones, grit, ear tags, horn buds, corn cobs, bark chips, hoof trimmings, placenta, penicillin tubes, tail-paint can tops as well as the manure that has passed through the cow. But sand accumulates in ponds, slowly filling them in and the other large articles block pipe lines while the smaller ones get stuck in the traveling irrigator nozzles. You don’t need this to happen.
Our grit separator and solids disintegrator eliminates all tasks but one - you must still spread the grit that the machine tidily piles up for you. All the other materials are chopped and screened so that whatever goes to the pond or irrigator is seriously reduced in particle size and can cause no problems. Dairy farmers have usually tried to do with half-hearted ways to deal with this problem - now we can provide you with a tool similar to that used to pre-condition waste water at municipal treatment plants. Professional engineering is being introduced into agricultural waste water dispersal.
It works like this: When you wash down the yard or scrape the feed-pad material into the inlet, all the heavy sandy and gritty material is separated from the floating material in a liquid cyclone and conveyed onto a pile adjacent to the yard where it can be picked up and spread later. The light material passes out through the disintegrator on the top of the cyclone, and can’t escape until it is ground down to a size where it will pass through the 8 mm mill plates. It is then sent to your irrigation pump or holding pond.
A further feature of the device is its ability to pump large volumes to low heads. Thus it it can lift liquid from yard level up to the higher level of the distant effluent holding pond. This eliminates the need for a separate transfer pump.
Unlike a solids screen, this machine performs four functions:
- Its active vortex action separates grit and metals from the effluent stream
- It piles them up so that an operator can see them and deal with them
- It reduces solids to a small size so that they don't block irrigator nozzles
- It functions as a transfer pump carrying effluent from the yard to a pond.
This device prepares effluent for a pond so there is no further solids handling or spreading with all the associated chores and costs.
The power consumption at peak is 5kW. It uses low speed cutting (1000 RPM) for long life. Cutters are easily replaced. Unlike unscreened cutters on pump inlets, nothing gets through this machine until its size has been reduced.
A note about pumice in soils and on races: Pumice is a glass containing many pores which usually cause it to float. It is very abrasive and is used as a cutting polish for that reason. It is very difficult to separate from liquids by gravity (e.g. stone traps or cyclones) because it has a similar specific gravity to that of water. If you can't keep it out of the effluent, then it will hasten wear on pumps and other plant.
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