Development, Fabrication And Performance Evaluation Of A Single Wheel Driven Boom Sprayer

3.3.5     The Boom
    The boom consist of the following parts and they were developed at the Agricultural Engineering department workshop, Kwara State Polytechnic,
I.    Boom’s pipe
II.    Nozzle holder at the middle of the boom
III.    Nozzle holder at the end of the boom
IV.    Frame for holding the boom
V.    Frame for fixing boom with the tank
    The boom is made of hose pipe whose length is 90cm, outside diameter is 6.5mm and inside diameter is 1.25mm.  That means, distances between nozzles to nozzles is maintained by 30cm.  It has four pieces, each of them 30cm long, which are connected with nozzle holders.  Both sides of each pipe are a taper with a ring.  Tow nuts are attached at both sides which can move within the pipe but it cannot come out from the pipe due to ring at the end of the pipe.

3.4     Specifications of the Single wheel driven boom sprayer
I.    Plastic tank capacity = 16 litres
II.    Driving wheel diameter = 600mm
III.    Driving sprocket tooth= 15 tooth
IV.    Driven sprocket tooth= 13 tooth
V.    Connecting chain link = 94 links
VI.    Centre to centre distance = 74cm
VII.    Crank length diameter= 12cm
VIII.    Connecting rod link = 42cm
IX.    Output link = 72cm       
3.5    Description of the single wheel driven boom sprayer
    The single wheel driven boom sprayer comprises of a plastic tank of 16litres volume capacity and the frame support was made of angle iron rod of length 2inches to each side. It uses  a driving wheel of 600mm diameter coupled to the front of the frame. It has a frame support of 380mm by 225mm suitable for the tank to fix the place. The transmission unit comprises of driving sprocket of 15 tooth and a driven sprocket of 13 tooth and both sprocket were connected with chain links which gives a speed of 1.2 : 1 . The sprayer is facilitated with boom having four nozzles at one end of the body supported with 0.75meter long rods vertically.
The  boom set is built in such a way that the boom can be adjusted at different heights.
    The diagram, orthographic and isometric view is shown at the back of the report.