RICE MILL MACHINERY AND EQUIPMENT - PPTX v111
RICE MILL MACHINERY AND EQUIPMENT - PPTX v111
RICE MILL MACHINERY AND EQUIPMENT - PPTX v111
EQUIPMENT
Rice Milling
refers to the process of removing husk from the
paddy and the bran pericarp,testa and aleuron
layer from the kernel.
Rice Mill
machine used to remove the hull and bran of the
palay to produce milled rice and consists mainly of
hulling and whitening assembly
Paddy or rough rice is called Palay
(Oryza Sativa L.) in the Philippines. It
is the greatest source of energy
food for the Asian people.
a. Friction
a.1. Kiskisan
a.2. Cono
a.3. Rubber Roll
a.4. Hand pounding
b. Impact
b.1. Centrifugal Flush
Type Impact
Centrifugal Type rice mill :
Paddy separation -------------- separating the paddy from the brown rice
De-stoning ------------- separating small stones from the brown rice
Whitening ------------- removing all or part of the bran layer and germ from
the brown rice
Polishing ------------- improving the appearance of milled rice by removing
remaining bran particles and by polishing the exterior
of the milled kernel
Grading ------------- separating small and large brokens from the head rice
Weighing and bagging -------- preparing milled rice for transport to the customer
1. PRE-CLEANING
Types of Pre-cleaning
Paddy intake
Straws/other big
Scalper
impurities
Aspirator(suction Light
impurities(dust,immat
blower) ure grain, others)
Clean Paddy
Paddy Cleaner
• Very compact.
• Easy to operate.
• Low cost and easy to maintain.
• Can mill small amount of paddy for individual farmers.
• Low cost of milling (handling and conveying equipment is minimal).
Disadvantages:
Disadvantages:
• Cost to purchase.
• Cost of rubber rollers.
3. Paddy Separation
• MANAGEMENT OF FACILITIES
• Public Nuisance Prevention -Problem on air pollution and noise are
generally less in rice mills compared to other industries. However, rice mills
must try to prevent the leakage of dust, noise, vibration and sometimes bad
smell coming from spoiled by-products and burned husks.
MAINTENANCE AND INSPECTION
• Making regular trouble shooting makes management cut down
expenses on spare parts and keep the machinery its best condition. To
do this, make a simple organizational structure in-charge of the entire
mill and each men in charge of each machine composing the milling
plant
• The chief of the mill should make an annual plan for maintenance,
budget and checklist of maintenance work. Inspections must be daily,
weekly and monthly reported. In actual cases, monthly inspections are
good for management control.
• MANAGEMENT OF FACILITIES
• All the personnel in the mill should have a good grasp on the operation
and their proper utilization including its maintenance.
Things to do in the Inspection ,Checking up the machines before
& during the operation:
• Dry run the machine to check if they have any error. If so, fix it.
• Check if the fixing bolts and gates of the pulleys and sprockets
are operating properly. If not, fix it.
• Attach a sign marked ‘Under Maintenance’ to the switch before
stopping the machine momentarily for repair or maintenance.
• GOODLUCK……