9.1 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.

 Specification

  Diameter of beater shaft (mm)

  Length of beater shaft (mm)

 Diameter of cylinder with rasp-bar (mm)

 Length of the cylinder

  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, engine

   Uses:

   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, 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.

  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:

   Used for threshing of paddy crop.

   Cost of Machine : Rs.80,000/-

  9.3 MAIZE DEHUSKER-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:

Used for threshing of maize cobs.

  Cost of Machine : Rs.60,000/-

9.4  GRO     UNDNUT THRESHER

Features

It consists of mild steel angle iron frame, thresher body, feeding chute, axial flow-threshing cylinder, concave, cleaning system, cover with louvers for axial flow of crop, centrifugal blower, oscillating rack, and inclined pan for flow of threshed material to cleaning system. For operation, the groundnut crop is fed manually in the threshing cylinder. The separation of pods from vines takes place in the cylinder and louvers provided in the casing help in axial movement of the vines. The pods with small pieces of chaff fall on the inclined pan, moves to the cleaning system and the clean pods are collected from the chute outlet. The vines after being threshed are thrown out of straw thrower outlet provided at the end of cylinder.

Specification

Power Source (hp)

Length (mm)

Width (mm)

Height (mm)

Type of thresher

Size of threshing cylinder, diameter x length (mm)

Cylinder speed (rpm)

Type of threshing drum

Opening size of concave (mm)

Type of louvers

Number of sieves

Opening size of sieve (mm)

Upper Sieve

Lower Sieve hole diameter

Type of blower

Blower Diameter (mm)          

:     35, tractor

:     2310

:     2190

:     1910

:     Axial Flow

:     500 x 1500

:      270

:      Spike tooth

:      44 x 27

:      Flat

:      2

:      20 x50

:      6

:      Centrifugal

:      400

Uses

Separation of groundnut pods from harvested p ants

Cost of M     achine : Rs.60,000/