9.0 THRESHING
EQUIPMENT
9.1 |
Pedal
Operated Paddy Thresher |
9.2 |
Multi-crop
Thresher |
9.3 |
Axial-flow
Paddy Thresher |
9.4 |
Maize
De-Husker Cum Sheller |
9.1 PEDAL OPERATED
PADDY THRESHER |
|
Features
It consists of wire-loop type threshing cylinder, power transmission
system, mild steel sheet body and foot pedal. The threshing cylinder
consists of wire-loops of ‘U’ shape embedded in wooden or metallic
strips joined to two discs. A shaft carries the threshing cylinder and
is connected to the transmission system. The transmission system
consists of meshed gears or sprocket-chain mechanism. The larger gear
or sprocket is connected to foot pedal/bar with links. The foot
pedal/bar is always in raised position. On pressing the pedal the
threshing cylinder starts rotating. For continuous rotation of the
cylinder, the pedal is lowered and raised repeatedly. For operation,
paddy bundle is held in hands and earhead portion of the crop is
placed on the rotating cylinder. The wire-loops hit the earheads and
grain get detached from the rest of the crop. |
Specification
Dimensions (LXWXH) (mm)
Cylinder size (mm)
Loop wire diameter (mm)
Number of wire loops
Number of wire loop strips
Transmission system
Weight (kg)
Power source |
: 1250 x 650 x 630
: 400 diameter x 600 length
: 4
: 44
: 12
: Pedal Crank mechanism with 1:4 gear ratio
: 36
: One persons |
Uses:
It is used for threshing of paddy crop. It easy to operate and does
not require much effort in its operation as it is operated by foot.
Cost of Machine : Rs.10000/- |
9.2 MULTI-CROP
THRESHER
|
|
Features
The thresher consists of rasp bar threshing cylinder, oscillating
sieves, concave and winnowing and cleaning attachment. The rasp-bar
cylinder is made of cast iron rings, sheet metal and toothed racks and
is fitted on the main shaft running on two heavy pedal bearings.
Various pulleys of different sizes are fitted on this shaft to
transmit power to winnowing and fan attachment. Adjustments for
cylinder and blower speeds and concave clearance are provided to make
the machines suitable for threshing various crops. It has a safe
feeding chute attached to it as per BIS standard.
|
Specification
Diameter of beater shaft (mm)
Length of beater shaft (mm)
Diameter of cylinder with rasp-bar (mm)
Length of the cylinder(mm)
Height of hopper from ground level (mm)
Capacity (kg/h)
Power requirement (hp/kW)
|
: 42
: 1400
: 416
: 560
: 1500
: 600-1000
: 7.5/5.6
|
Uses:
It is suitable for threshing paddy, ragi, jowar,
maize, sunflower, wheat, mustard etc.
Cost of Machine : Rs.60,000 – 80,000/-
|
9.2 AXIAL-FLOW
PADDY THRESHER
|
|
Features
It consists of a threshing cylinder, concave, cylinder casing,
cleaning system and feeding chute. In axial flow concept, the crop is
fed from one end, it moves axially and the straw is thrown out from
the other end after complete threshing of the crop. During threshing,
the crop rotates three and half times around the cylinder and all the
grains get detached. The threshing cylinder is of peg type. The casing
of the thresher has 7 louvers for moving the crop axially. Two
aspirator blowers and two sieves are provided for cleaning the grain.
|
Specifications
Length (mm)
Width (mm)
Height(mm) :
Feeding device :
Length of feeding chute (mm) :
Width of feeding chute (mm)
Type of cylinder
Cylinder size, tip diameter x length(m m)
Length of concave (mm)
Width of concave (mm)
Concave clearance (mm)
Type, size and number of blowers
Weight (kg)
Power requirement(hp/kW) : |
: 2030
: 3050
: 1960
: Feeding chute, manually
: 905
: 110
: Spike tooth
: 770 x 1500
: 840
: 570
: 18-21
: Aspirator type, two blowers of
400 mm diameter and 160 mm
width
: 730
: 35/26.25, tractor PTO
|
Uses:
It is used for threshing of paddy crop.
Cost of Machine : Rs.80,000/- |
9.3 MAIZE DE-HUSKER
CUM SHELLER |
|
Features
Maize dehusker cum sheller are of two types namely, spike tooth type
and axial flow type. In the spike tooth type sheller, pegs are
staggered at varying heights for better shelling efficiency. The
spikes are placed in 6 rows with 6 spikes in each row. The sieves have
1.25 cm diameter opening to separate the shelled maize from husk. In
axial flow type threshers, pegs are provided on the cylinder and
louvers were provided on the upper periphery of the drum to convey the
crop to the outlet.
|
Specification
Length (mm)
Width (mm)
Height (mm)
Dia. of threshing cylinder (mm)
Length of threshing cylinder (mm)
Cylinder speed (m/s)
Type of threshing drum
Type of blower
No of sieves
Opening size of upper sieve (mm)
Opening size of lower sieve (mm)
Concave clearance (mm)
Opening size of concave (mm)
Moisture content of cobs (%)
Threshing Capacity(kg/h)
Power requirement(hp/kW)
|
Spike tooth type
1765
1065
1570
480
325
16.4
Spike tooth
centrifugal
2
12
2
50
5
x 5
12-28
450-650
35/26.25 |
Axial type
3400
1140
2190
495
1460
13.7
Peg type
centrifugal
3
12.5
3
50
5.1 x 5.1
15-28
1200-2800
35/26.25 |
Uses:
It is used for threshing of maize cobs.
Cost of Machine : Rs.60,000/- |