Some standard content:
National Standard of the People's Republic of China
Terminology of rice milling industryUDC664.782
GB8875-88
This standard specifies the terminology of rice milling industry and is applicable to production, teaching, scientific research and other related fields. 1 Cleaning
cleaning
A general term for the process of removing impurities from raw grains. 1.1 Pre-cleaning
Preliminary cleaning, scalping The process of preliminary cleaning of large impurities and dust in raw grains. 1.2 Screening
Screening, separation
The method of separating impurities or grading raw grains by using the difference in particle size (width, thickness, length) between the sifted materials with the help of sieve holes.
1.2.1 Preliminary cleaning separator, precleaner, scalperator A machine for preliminary cleaning of large impurities and dust in raw grains. 1.2.2 Vibrating screen
vibrating separator, reciprocating separator A screening machine in which the sieve body performs longitudinal (or transverse) linear reciprocating motion. 1.2.3 Rotary sieve classifier
rotary sieve classifier, plansifter A screening machine in which the sieve body performs horizontal rotary motion (the trajectory is a horizontal circle). 1.2.4 High speed vibrating separator
high speed vibrating separator, ripple sifter A screening machine in which the sieve body performs horizontal rotary motion (the trajectory is a horizontal circle) by using the high-speed rotation of the eccentric weight block to generate inertial centrifugal force, so that the sieve body obtains a vibration condition combining vertical and horizontal directions, that is, a screening machine with a double-phase vibration circular trajectory.
1.2.5 Hexagonal reel
hexagonal reel
a screening machine with a horizontal hexagonal prism body rotating around the axis of the cylinder. 1.2.6 Round sieve
a screening machine with a horizontal cylinder body rotating around the cylinder axis at a slight inclination. The round sieve used for cleaning does not have a beating plate. 1.2.7 Inclined sieve separator, gravity sieve separator Approved by the Ministry of Commerce of the People's Republic of China on March 26, 1988, implemented on July 1, 1988
GB8875-88
a device for screening materials by gravity on a stationary inclined sieve surface. 1.2.8 High speed vibrating separator for barnyard millet removal High speed vibrating separator specially used for separating barnyard millet from rice. 1.2.9 slot perforated grading cylinder
equipment for grading rice according to its thickness, mainly used for cleaning the raw material (rice) of parboiled rice. 1.3 wet separation
wet separation
a method of removing stones, light impurities and imperfect grains from rice in water by using the difference in specific gravity between rice and impurities. Generally used for parboiled rice processing.
1.3.1 paddy washing machine
paddy washing machine
equipment for wet separation of rice.
1.4 aspiration, air-classification a method of removing impurities or grading by using the difference in suspension speed between grains and impurities or grains themselves with the help of airflow. 1.4.1 aspirator
aspirator
a general term for equipment for removing impurities or grading by using the difference in suspension speed of materials. 1.4.2 Bellows
air box, winnower, fan
Also called "windmill". A wind separator that uses horizontal or inclined airflow to sort materials in the wind separation chamber. 1.5 Magnetic separation
magnetic separation
A method of removing magnetic metal impurities from grains by using magnetic force. 1.5.1 Magnetic separator
magnetic separator
Equipment for removing magnetic impurities from grains.
1.6 Dry separation by specific gravity, dry gravity separation A method of removing impurities or sorting grains by using the difference in specific gravity between grains and impurities or between different grains, with the help of airflow and screen surface.
1.6.1Dry stoner, gravity stoner
A processing machine that utilizes the difference in specific gravity and suspension speed of materials to separate and ripple the rice awns with the help of airflow and screen surface. 1.7Beard beating
Beard beating
A process of removing rice awns by beating or rolling. 1.7.1Beard beating machine
Beard cutting machine, awnerA machine that utilizes the rotation of rotating rollers in a cylindrical body to cause the rice grains to flip and rub against each other, thereby breaking and removing the rice awns.
Vertical beard cutting machine
GB8875-88
vertical beard cuttingmachine,verticalawnerA beard cutting machine with a vertical main axis.
Horizontal beard cutting machine
horizontal beard cutting machine,horizontal awnerA beard cutting machine with a horizontal main axis.
1.8 Ear removing
Ear removing
The process of removing rice ears from rice grains.
1.8.1 Ear remover
Ear remover
A machine for removing rice ears from rice grains.
Rice thresher
Rice thresher
A special machine for removing rice grains from rice ears in grain factories and warehouses. 1.9
Grain sorting
Processing separately according to kernel size A method of sorting clean rice according to kernel size and then processing them separately. Rough grain
Rough grain,rawgrain
Raw grain that has not been cleaned.
rawpaddy,roughrice
Rice that has not been cleaned.
cleaned paddy
Rice that meets the processing requirements after cleaning and contains impurities. 1.13
Grain receiving pit
An underground pit for raw grain such as rice to flow into the conveying equipment. Grain bin
grainbin
A silo for storing materials such as rice.
Process flow
processing,flow scheme
Combining a series of machines, equipment and processes in sequence. The production process of processing raw materials according to certain product quality standards.
Process flow chart
processing scheme,process chartA schematic diagram showing the process flow. It belongs to the category of engineering drawings. Graphic symbols are used to represent various equipment, and then various lines are used to connect them to indicate the flow of materials.
Humidity adjustment
humidityadjusting
GB8875-88
The process of adjusting the air humidity in the rice mill or in the machine equipment to moisten the cortex of rice grains. 2 Separation of rice grains and their contents
2.1 Husking
husking, shelling
The process of removing the husk of grain grains.
2.1.1 Husking by differential extruding and ripping
husking by differential extruding and ripping The method of removing the husk by extruding and ripping the two sides of the grains by two working surfaces with different movement speeds. Such as rubber roller rice mill.
2.1.Husking by end pressing and ripping: A method of removing the husks from the two ends (in the length direction) of the grain by squeezing and rubbing two working surfaces moving at different speeds. Such as a sand tray husking machine.
2.1.3 Husking by impact: A method of removing the husks from the grains by impacting the grains moving at high speeds with a fixed working surface. Such as a centrifugal husking machine. 2.2 Husker, sheller: A machine for removing the husks from rice grains.
2.2.1 Roller husker: Roll husker, roll sheller: A husker with a pair of rollers that rotate in opposite directions and have a certain speed difference as the main working components. 2.2.1.1 Rubber roll husker, rubber roll sheller A roller husker with a pair of rubber rolls as the main working components. 2.2.1.2 Rubber roll Also known as "rubber roll". A rubber roll made of a metal roller covered with a layer of rubber is the main working component of the rubber roll husker.
2.2.1.3 Polyurethane roll
polyurethane roll A rubber roll made of a metal roller covered with polyurethane elastomer. 2.2.1.4 Roll pressure-adjusting mechanism A mechanism that can adjust the pressure between the two rolls to meet the needs of shelling, and can allow hard objects that accidentally fall between the two rolls to pass and quickly resume normal production.
2.2.1.5 Roll gap-adjusting mechanism A mechanism that can adjust the distance between the two rolls.
2.2.1.6 Feed shedding plate
It is placed under the feeding hopper of the roller mill, and is at an adjustable angle to the horizontal plane. It can accurately guide the clean rice into the gap between the two rollers. The long shedding plate also has the function of accelerating feeding. 2.2.1.7 Shedding plate
Shedding plate
It is a sieve plate or thin plate that promotes the automatic classification of rice in the roller mill. 2.2.1.8 Shriveling paddy skimming plate
It is a partition plate set at the outlet of the rice-rough mixture of the mill and used to extract the rice. 2.2.1.9 Roll gap, roll clearance
It is the distance between the two rollers or the surfaces of the two sand plates when the mill is working. 2.2.1.10
Nip,nip point
The contact point on the two rollers when the rice contacts the surface of the two rollers of the roller mill and begins to be squeezed. 2. 2. 1. 11
Nip angle
nipangle
The angle formed by the line connecting the nip point and the center of the same roller and the center line of the two rollers. Terminal pointwwW.bzxz.Net
terminal point
The contact point between the rice and the surface of the two rollers when the rice leaves the two rollers after passing through the rice. 2.2.1.13Angle of terminal
The angle formed by the line connecting the terminal point and the center of the same roller and the center line of the two rollers. 2.2.1.14
Husking distance
The distance from the starting point to the end point is generally twice the length of the cross-sectional area of the roller corresponding to the starting angle. 2.2.1.15
5Husking time
The time it takes for the grain to pass through the husking distance.
6Ripping length
The length of the fast roll ahead of the slow roll during the ripping time. Rubber roller pressure
2. 2. 1.17
Pressure between rolls
Also known as "pressure between rolls". The pressure between the fast and slow rolls during the rice husking process is calculated based on the unit contact length of the rubber rollers and expressed in N/cm.
8 Rubber roll linear speed
peripheral speed of rubbet roll The peripheral speed of the rubber roller. It is divided into fast roller linear speed and slow roller linear speed, expressed in m/s. Rubber roll linear speed difference
rubber roll differential
The difference between the fast and slow roller linear speeds of the rubber roller rolling machine, expressed in m/s. 2.2.1.20 Rubber roll linear speed ratio
ratio of roll peripheral speeds2.2.1.21
GB8875—88
Ratio of the fast and slow roller linear speeds of the rubber roller rolling machine.
Summary of roll peripheral speeds
Sum of roll peripheral speedsThe sum of the fast and slow roller linear speeds of the rubber roller rolling machine, expressed in m/s. Rubber roll hardness
hardness of rubber roll
The hardness of the rubber roller surface. It is usually expressed in Shore hardness. 2.2.1.23 Defect of roll Defect of roll The phenomenon that the surface of the roll is damaged or the shape is not correct due to improper operation or other reasons. 2.2.1.23.1 Differ in roll end diameters The phenomenon that the diameters at both ends of the roll are different. 2.2.1.23.2 Flangeforming (at roll ends) The fast and slow roll ends are not on the same plane or the feeding is uneven, resulting in the edge bulge at the end of the roll. 2.2.1.23.3 Out of circularity The phenomenon that the roll is not round due to mechanical vibration or improper use. 2.2.1.23.4 Groove forming (on rubber roll surface) The phenomenon that the surface of the roll has concave and convex grooves and the surface is uneven. 2.2.1.23.5 Cloudy speckle (on rubber roll surface) Due to improper use or poor quality of the roller, fish-scale-like patterns appear on the surface of the roller. 2.2.1.23.6 Pits (on rubber roll surface) Due to improper use or poor quality of the roller, granular depressions appear on the surface of the roller. 2.2.1.23.7 Smoothness or evenness (on rubber roll surface) Refers to the degree of unevenness such as grooves, cloudiness, and pitting on the surface of the rubber roll after use. Husked rice stained with black rubber is also called "staining". The phenomenon that the surface of brown rice is stained with black rubber during the husking process. 2.2.1.25 Surface roughened husked rice The phenomenon that the surface cortex of brown rice is damaged during the husking process. 2.2.1.26 Husker with weight balanced roll-engagement ...1Hydraulic roll-engagement mechanism A mechanism that uses a hydraulic device to control a certain pressure between the rolls. 3Pneumatic roll-engagement Husker with pneumatic roll-engagement A husker that uses a pneumatic device to control the pressure between the rolls. 2.2.1.28.1Pneumatic roll-engagement mechanism A mechanism that uses a pneumatic device to control a certain pressure between the rolls. Gear box husker A roller husker that uses a gear box to change the speed of the fast and slow rolls. 2.2.2Disc husker Emery sheller, cmery disk husker Also known as "sand sheller" and "emery husker". A husker with upper and lower diamond sand discs as the main working components. Emery disc
emery disc
A disc-shaped component made of emery sintered or cast in an emery disc mill. Emery surface width
width of emery surface
The difference between the outer radius and the inner radius of the emery disc of an emery disc mill. Emery surface making
2.2.2.3 Emery surface making
The process of making the working surface of an emery disc with emery and bonding materials, including casting, sintering and baking. Emery surface dressing
Emery surface dressing
To keep the working surface of the emery disc of an emery disc mill flat. Sharp and manually chiseled, knocked and repaired. 2.2.2.5 Split rice
Brown rice with part of the endosperm split when the emery disc mill is milled. 2.2.3
Centrifugal husker
A husker with a high-speed rotating disc as the main working component and a fixed impact ring around the disc. 2.2.3.1 Throwing disc
Projecting disc, throwing discThe disc-shaped component used to throw out grains in a centrifugal husker. Impact ring
Impact ring
The working circle in a centrifugal husker that bears the impact of grains. 2.2.4 Husk separator (device)
Husk aspirator
GB887588
Wind separation equipment (device) used to separate husks. 2.3 Post-husking materials
A mixture of brown rice, rice grains, rice husks, etc. discharged from a husker. 2.4 Husk separation
husk separation
The process of separating the husks (rice and other grains) from the waste. 2.4.1 Husk collecting
husk collecting
The process of collecting the husks separated by wind selection. 2.5 Husk separation
husked rice separation,paddy separation is also called "selecting husks". The process of separating brown rice and paddy in a mixture of paddy and rice. 2.5.1 Mixture of paddy and husked rice
mixture of paddy and husked rice After the husks are separated from the waste, it is mainly a mixture of brown rice and unhusked rice. Husk separation equipment
husked rice separator,paddy separator Equipment that uses the difference in physical properties between paddy and brown rice to separate paddy and rice. 2.5.3 Static screen paddy separator Static screen paddy separator is a screen used for paddy and rice separation. There are single-layer and multi-layer forms. Plansifter for paddy separation
plansifter for paddy separationThe paddy separation screen with horizontal rotary motion of the sieve body. 2.5.5Paddy separator
Paddy separator with compartmentsEquipment for paddy separation by utilizing the different surface friction coefficients, specific gravity, particle size and elasticity between paddy and brown rice. 2.5.6Specific gravity paddy separatorEquipment for paddy separation by utilizing the difference in specific gravity, particle size and surface friction coefficient between paddy and brown rice, with the function of bidirectional tilting and reciprocating working plates, and adding automatic grading. 2.5.7Husked rice
husked rice, brown rice
Caryopsis after the inner and outer husks of paddy are removed.
2.5.8Clean husked rice
Clean husked rice
Brown rice that meets the specified standards separated by the paddy separation equipment. 2.5.9 Re-husking paddy, unhusked rice Paddy that has been separated by the rice-brown separation equipment and needs to be returned to the rice husk machine for re-husking. 2.6 Raw brokens, broken brown rice GB8875-88 Broken brown rice is broken (or edged) and is less than two-thirds of the normal whole rice. 2.7 Intermediate product, semi-product Grain that is being processed from the rice husk to the finished rice. 2.8 By-product By-product Products other than finished products in grain processing, such as rice bran, rice husk, rice husk, etc. 2.9 Cracked rice Also known as "cracked rice". Cracks appear on the surface of brown rice and white rice. 2.10 Technical and economic indicators 2.10.1 Husker flow rate Loadings of husker, loadings of shellen The amount of material flowing through each husker per unit time, expressed in kg/unit·hour. 2.10.2 Capacity of husker
The amount of paddy rice processed into brown rice by each husker per unit time can be expressed by the following formula: Capacity of husker (kg paddy rice/unit·hour) = flow rate × husking rate (%) × (1-imported brown rice content %), which is converted into brown rice production as follows:
Capacity of brown rice husker (kg brown rice/unit·hour) = husker production (paddy rice) × brown rice output rate (%) 2.10.3 Capacity per unit length of rubber roll, specified rubber roll surface, specific rubber roll surface The capacity of a roller-type husker per unit contact length of the roller per unit time is equal to the capacity of the roller-type husker/roller contact length, expressed in dry grams of brown rice/cm·hour or dry grams of paddy rice/cm·hour. tt||capacity per unit area of emery disc The output per unit contact area of emery disc emery disc machine per unit time, equal to the output of emery disc emery disc machine / contact area of emery disc, expressed in kg brown rice / square meter·hour or kg paddy / square meter·hour. 2.10.5 consumption of rubber, rubber consumption The weight of rubber rollers and rubber used by the emery disc emery disc machine for processing 100 kg clean rice, expressed in grams of rubber / 100 kg paddy. 2.10.6 Husking yield
husking yield
After the rice is husked once by the Husking Machine, the percentage of the weight of the husked rice to the weight of the rice in the Husking Machine can be calculated by the following formula: Husking yield (approximate value) % = brown rice weight/(rice weight × brown rice yield + brown rice weight) × 100 2.10.7 Brown rice yield
brown rice yield
The percentage of the weight of brown rice obtained after a certain amount of net rice is completely husked to the weight of the rice. 2.10.8 Stability of husking yield The stability of the husking yield of the Husking machine within a certain period of time is measured by the fluctuation of the husking yield. 2.10.9 Fluctuation of husking yield Between every two adjustments, the Husking machine takes samples once an hour for six consecutive times to obtain the average husking yield. The fluctuation of the husking yield is calculated as follows: Husking yield fluctuation = (highest husking yield - lowest husking yield) / average husking yield × 100% 2.10.10 Power consumption of husking The power consumed by the Husking machine to produce one ton of brown rice is expressed in kW·h/t. 2.10.12
percentage of split rice
percentage of split rice
percentage of husk content
percentage of husk content in the mixture of rice and husk after separation of husk. 2.10.14
capacity of husked rice-separator
net amount of husk separated per unit time, expressed in dry grams of husk rice/tack-hour. 5Capacity per unit area of husked rice separatorThe net amount of husked rice separated from the nominal total area of unit screening and grading per unit time, expressed in kilograms of husked rice/square meter·hour.
Power consumption of husked rice separationThe power consumed for each ton of net husked rice separated, expressed in kW·h/t. Capacity of returns
The flow rate of husked rice mixture separated by husked rice separator and still to be recycled and sorted, expressed in kg/h. Return ratio
returns ratio
The weight percentage of returns to huskerThe flow rate of husked rice returned to husker separated by husked rice separator. Expressed in kg/h. 2.10.20 Paddy content in clean husked rice The quality index of clean husked rice, the number of unhusked rice grains per dry gram of clean husked rice. Percent husked rice inpaddy returns to sheller The weight percentage of husked rice in husked rice, an index of husked rice purity. 2.10.22 Percent cracked rice The percentage of cracked rice grains contained in the husked rice mixture according to GB887588 The percentage of cracked rice grains contained in the husked rice mixture to the number of husked grains (including whole husked rice and cracked rice). 3 Rice whitening, rice milling The process of grinding away the cortex of husked rice. 3.1 Rice milling machine Rice whitener, rice whitening machine, rice milling machine Machine for grinding away the cortex of husked rice. Referred to as rice mill. 3.1.1 Whitening chamber
The main working part of the rice mill for whitening. It is generally composed of a screw propeller, a milling roller, a rice screen, a rice knife, etc. 3.1.2
Screw propeller
Screwiron roll
A screw conveyor installed at the front end of the rice mill for propelling rice grains. 3.1.3
Whitening cylinder
A cylindrical or truncated cone roller used for whitening rice grains in a rice mill. 3.1.4 Rice screen
Screen
A screen installed under or around the rice mill roller for discharging bran. Clearance
clearance between the roll and the screen is also called "air storage". The distance between the milling roller and the rice screen or rice machine cover. 3.1.6 Huller blade, resistance piece, steel brake An adjustable long flat iron or hard rubber plate axially arranged on the inner wall of the milling chamber. Its main function is to generate local pressure in the machine. 3.1.7 Polishing chamber Polishing chamber The working part of the rice milling machine for polishing rice, which is composed of a screw conveyor, a rice polishing iron roller (or a leather strip, a brush), a rice screen, etc. 3.1.8 Vertical rice whitening machine A general term for rice whitening machines with a vertical spindle. The milling rollers of this type of rice machine are all made of corundum and have shapes such as truncated cones, convex shapes, and I-shaped shapes. 3.1.9E Horizontal rice whitening machine Horizontal rice whitening machine is a general term for rice mills with horizontal main axis.
3.1.10 Iron roll rice whitener, tamping machine is a general term for rice mills with iron rolls.
3.1.10.15
iron roll, iron ribbed rotor is a general term for rice mills with iron rolls.
Sand roll rice mill
GB8875-88
emery roll whitening machine, abrasive type rice whitening machine is a general term for rice mills with emery rolls. 3.1.11.1 Emery roll
emery roll
A ridge made of sintered emery or cast on an iron core. 3.1.11.2 Ridge on milling roll
The ribs on the surface of the milling roll are used to push the rice grains, turn the rice grains and increase the local pressure. 3.1.11.3
groove on milling roll
The oblique grooves on the surface of the milling roll have the same function as the milling ribs. 2Emery roll with iron ridge ricewhitenerAlso known as "Guangzhou rice whitener". A rice mill with a truncated cone-shaped iron ridge emery roll (with several iron ridges protruding from the surface). Emery roll with iron ridge
A milling roll with several iron ridges on the emery surface. 3.1.13Jet-air whitening machine
Jet-air whitening machine
A rice milling machine that sprays air from the inside of the milling roll into the whitening chamber during rice whitening. 3.1.13.1 Jet-air slot
Jet-air slot
Also called "air outlet". The air outlet slot on the milling roller of a jet-air rice mill. Axial air inlet
3. 1. 13. 2
Axial air inlet, air inlet through hollow shaft The air inlet mode of a jet-air rice mill is an air inlet mode in which the airflow enters the milling chamber axially through the central hole of the mill shaft. 3.1.13.32
Radial air inlet
Radial air inlet, air inlet through roll end The air inlet mode of a jet-air rice mill is an air inlet mode in which the airflow enters the milling chamber radially from the end face of the milling roll through the annular gap between the roller and the shaft. Combined rice mill
Combined rice mill
Equipment that combines a rice mill with a rice rubbing, bran separation and other operating mechanisms. 3.1.15 Complete set of rice milling equipment
Complete set rice milling equipment (including cleaning, rice milling, rice milling and other processes) with production capacity and equipment performance coordinated with each other. Each single machine can also be selected separately.
Combined rice milling equipment
combined rice mill equipment
Two or more different equipments with production capacity and equipment performance coordinated with each other are combined together with auxiliary equipment to form one or several rice milling equipments.
3.2 Principle and method of rice milling
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