Description
Made in SA
Building on the proven design of the famous Hippo Hammer mill – the set up of the mill has been changed so that the mill can function as a maize dehuller.
Maize dehulling is strictly for the removal of most of the bran from the maize kernel – resulting in a whiter, cleaner maize meal when milled.
While keeping all the design characteristics that have made Hippo mills the best in the industry – the following changes have been made to enable the mill to dehull maize kernels.
a. The rotor speed is dropped from 4,200RPM to 800RPM – enabling the tips to rub off the kernels without milling
b. The rotor is fitted with single tips – instead of the standard double tips – which reduces the aggresion of the rotor onto the maize kernels – once again to prevent the dehuller from milling the maize
c. The mill is fitted with a 10 or a 12mm screen – which allows the maize to stay in the milling chamber long enough to knock the bran/skin off, but not long enough to get milled
d. The mill’s entire body is raised – to allow us to fit an aspirator to the outlet of the mill, through which the grain passes after dehulling, and where the skin/bran get sucked off – and then the dehulled maize is collected into a bag, or into an auger for further processing
e. The mill’s integrated cast iron fan impeller is upgraded to the next size (that is used in the #47-#69 range) which results in higher airflow at the lower shaft speeds – so that there is enough air to suck off the bran in the aspirator.
The dehuller uses the same standard cyclone, air ducting and dust filters as the standard Hippo mill – so parts are interchangeable. Also – the dehuller can be run as a mill as well, with a few changes to the flow directions on the air ducting and by changing the pulleys to increase the rotor speed again.
The dehuller also has the standard mechanical automatic infeed control – to prevent overfeeding.
It is however important to note that the dehuller is designed to dehull CONDITIONED maize- that is maize that has had between 1% and 2% of water added and mixed thoroughly and left to condition for at least 1 hour- which toughens the bran of the maize, and allows the skin to be knocked off from the endosperm. Feeding the dehuller with dry maize will not result in efficient dehulling.
As standard the dehuller is fitted with a 7.5KW 3 phase electric motor – but is also available on special order with a 10HP diesel engine.
Capacity
Dehulling of conditioned maize – 500kg/hr
Rotor RPM: 800
Inlet size: 165mm x 180mm
Screen area: 1104cm²
The mills are all a bolt together construction, which gives the mill an exceptionally long lifespan, and make replacing of parts easy and quick.
HIPPO HAMMERMILLS have been manufactured in South Africa since 1928, and parts are readily available from our warehouse, usually within 24 hour from order. HIPPO HAMMERMILLS from models Baby up to Size 69 are based on cast iron milling plates, which drastically increases the lifespan of the mill, compared to competitors.
The Hippo 1 is our most popular model, and was the first design that was produced by Arthur Collins in 1928 – and is the entry level in our agricultural range of mills, with medium capacity and high quality parts. All milling tips are manufactured from Bennox (or Hardox for highly abrasive materials) to ensure long lifetime on these parts
