Paddy Separator

Why Choose Us?

Advanced equipment
The company mainly produces rice milling machinery, and its products cover the entire process of rice initial processing from rice cleaning, stone removal, hulling, separation to rice whitening, polishing, and color selection. There are a total of 7 series and more than 130 varieties. The company has a comprehensive product development system and modern production capacity, as well as industry-leading professional process equipment and product research and development centers.

Rich experience
Yutai Jinyuan Machinery Co., Ltd. is a professional manufacturer of grain processing equipment with a 30-year history. The company has a registered capital of 10 million yuan and total assets of over 30 million yuan.

Professional team
Our company has a professional design team with many years of market experience, which has participated in the design, installation, commissioning, and service of multiple complete projects. The company has a professional installation team of more than 20 people, who can organize or allocate installation personnel at any time to improve customer progress and ensure project schedule.

High quality
For each complete set of projects, especially large-scale engineering projects, a project team will be established to design, order, purchase, produce, distribute, transport, deliver, install, debug, and supervise quality, coordinate work progress, and project team members are both independent and cooperative, enabling the entire project to proceed smoothly.

What Is a Paddy Separator?

A paddy separator utilizes differences in the physical properties of rice and brown rice, such as density, surface friction, and heat coefficient, to perform its function. It operates with a rough working surface that tilts in both directions and vibrates back and forth. This design allows for automatic grading of grain mixtures based on their roughness.
In the separation process, rice grains "float" or "sink" based on their properties. Brown rice moves upwards and is discharged from the inclined upper part of the working surface due to the blocking action of protrusions on the rough surface. Meanwhile, rice moves downwards under its own gravity and feed thrust and is discharged from the lower outlet. This process effectively separates the rice from the husks.

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Paddy Separator Working Principle

Paddy separator machine is used to separate the brown rice from the paddy that is not be husked, it workds according to the difference of specific gravity, granularity and friction coefficient between paddy and brown rice, through the special separating tray to screen the mixture continuously, making it in stratification state.
Due to the function of separation, big-density and small-size brown rice towards to the upper of the separating tray, small specific gravity and large-size paddy towards to the lower part of the separating tray, then separating pure brown rice, mixture and pure paddy.

The Basic Methods of Paddy Separators

Currently, the commonly used paddy separator machines mainly include the screening method and the density separation method.
Screening Method of Rice Separator Machine
The screening method in a rice separator mill utilizes the difference in particle size between rice and brown rice, along with its automatic grading characteristics. The machine is equipped with appropriate sieve holes and employs a specific sieve surface movement to separate the grains. A commonly used piece of equipment is the rotary screen for rice separation.

In this method, the paddy grains and rice are separated using a rotary screen that takes advantage of physical differences such as grain size, density, and surface friction coefficient. The screen performs a plane rotary motion, causing rice with larger particle size, lower density, and rough surface to float on the upper layer of the material. In contrast, brown rice, with smaller particle size, higher density, and smoother surface, sinks to the bottom layer. Brown rice comes into contact with the sieve surface and passes through the sieve holes, becoming undersize. The rice is blocked by the brown rice layer and does not easily pass through the sieve holes, becoming oversize. This process achieves effective grain separation.

Density Separation Method of Rice Mill Separator
The density separation method involves separating grains on a rough working surface with reciprocating vibration, based on differences in physical properties such as density and surface friction coefficient between rice and brown rice. This method relies on the automatic classification characteristics of the grains. Commonly used separation equipment includes the rice paddy separator machine or the rice mill paddy separator.

Exploring the Types of Paddy Separators

The choice of paddy separator type depends on the specific requirements of the rice milling operation, including capacity, efficiency, and processing conditions.
● Gravity paddy separator: This relies on the fundamental principle of gravity, leveraging weight changes to separate the rice.

● Inclined tray paddy separator: This type uses inclined trays to create a gentle slope, allowing the movement of brown rice while controlling the paddy – just like a slide

● Vibrating tray paddy separator: This separator uses vibrating trays. The vibration facilitates the separation of paddy and brown rice based on their density and specific gravity, ensuring efficient sorting

● Centrifugal paddy separator: This type employs a spinning drum, creating a force that pushes the paddy outward, separating it from brown rice.

The Modern Milling Process: Paddy Separator

Pre-cleaning
When paddy comes into the mill, it contains foreign materials such as straw, weed seeds, soil, and other inert materials. If these are not removed before hulling, the efficiency of the huller and milling recovery will be reduced. The capacity of the paddy pre-cleaner is normally 1.5 times the milling capacity.

Removing the husk (dehusking or dehulling)
Brown rice is produced by removing the husk from rough paddy rice. The husk is removed by friction as the paddy grains pass between two abrasive surfaces that move at different speeds. After dehusking, the husk is removed by suction and transported to a storage dump outside the mill. Husk accounts for 20% of the paddy weight and an efficient husker should remove 90% of the husk in a single pass.

Paddy separation
The paddy separator separates unhusked paddy rice from brown rice. The amount of paddy present depends on the efficiency of the husker and should not be more than 10%. Paddy separators work by making use of the differences in specific gravity, buoyancy, and size between paddy and brown rice.

Whitening or polishing
White rice is produced by removing the bran layer and the germ from the paddy. The bran layer is removed from the kernel through either abrasive or friction polishers. The amount of bran removed is normally between 8 and 10% of the total paddy weight. To reduce the number of broken grains during the whitening process, rice is normally passed through two to four whitening machines connected in series.

Separation of white rice
After polishing, white rice is separated into head rice, large and small broken rice, and "brewers" by an oscillating screen sifter. Head rice is normally classified as kernels that are 75−80% or more of a whole kernel. To attain a higher degree of precision for grading and separation a length or indent grader is used.

Rice mixing
A good rice mill will produce 50−60% head rice (whole kernels), 5−10% large broken and 10−15% small broken kernels. Depending on country standards, rice grades in the market will contain from 5−25% broken kernels. If rice mixing is to be done properly, then a volumetric mixer is necessary.

Mist polishing
Mixing a fine mist of water with the dust retained on the whitened rice improves the luster of rice (polishes) without significantly reducing milling yield. A friction type of whitening machine, which delivers a fine mist of water during the final whitening process, is used for "final" polishing before sale.

Paddy Separator Can Separate the Chaff and Rice

A paddy separator is specialized equipment used in the rice milling process. It is primarily employed to remove bran from white rice and excess water, thereby reducing the rice temperature. This ensures that the rice can be polished at a lower temperature in the polisher, improving the polishing effect. It is beneficial for the storage and transport of rice, extending its storage time. The paddy separator is a new type of rice mill, mainly used for processing Japonica rice and is widely utilized in urban, rural, and small to medium-sized rice processing operations. It is the preferred choice for current paddy processing.

The paddy separator is equipped with an air spraying apparatus, which effectively separates the chaff from the rice. A key feature of this rice mill machine is its ability to process rice into standard white rice in one pass, resulting in bright and clean rice with low temperature and minimal chaff powder content.

The paddy separator features a simple process, compact structure, small footprint, low power consumption, low noise, and ease of operation and maintenance. It offers high efficiency, with greater output and reduced milling time compared to similar products, providing the best economic benefits to users.

Why Use the Paddy Separator in the Rice Mill Plant

Ensure Efficient Operation of the Rice Mill
The raw material for a rice mill is typically brown rice, and the hulled material consists of a mixture of brown rice, paddy, and other impurities. The paddy separator machine is used to separate the brown rice from these impurities, providing cleaner raw materials for the rice mill. If this separation does not occur, it will significantly impact the effectiveness of the grain separation process.

Reduce Damage to the Rubber Rollers
Rice grains separated by the paddy separator are referred to as back-hulled grains. These grains need to be returned to the huller machine for further processing. To improve the efficiency of the hulling machine, the brown rice content in the back-hulled grains should not exceed 10%. Excess rice in the back-hulled grains can greatly reduce the productivity of the rice huller, increase the wear and energy consumption of the rubber rollers, and cause further damage to the brown rice.

Our Factory

Yutai Jinyuan Machinery Co., Ltd. is a professional manufacturer of grain processing equipment with a 30-year history. The company has a registered capital of 10 million yuan and total assets of over 30 million yuan. It covers an area of 50000 square meters and employs more than 50 people. The company mainly produces rice milling machinery, and its products cover the entire process of rice initial processing from rice cleaning, stone removal, hulling, separation to rice whitening, polishing, and color selection. There are a total of 7 series and more than 130 varieties. The company has a comprehensive product development system and modern production capacity, as well as industry-leading professional process equipment and product research and development centers. The company has participated in the construction of large-scale complete rice milling projects both domestically and internationally, ranking among the top in comprehensive market share.

Production Equipment

FAQ

Q: What is paddy separator?

A: Rice separator utilizes the difference in the physical properties of rice and brown rice in terms of density, surface friction and heat coefficient, and acts as a rough working surface that tilts in both directions and vibrates back and forth. Automatic grading of grain and roughness mixtures. The rice "floats" and "sinks". Brown rice moves upwards and is discharged from the inclined upper part of the working surface under the blocking action of the boss on the rough working face, the rice is inclined downwards under the action of its own gravity and feed thrust, and is discharged from the lower outlet, so as to realize the roughness of the grain. Separation.

Q: How do you separate paddy?

A: Threshing: Threshing is the process used to separate paddy seeds from their stalks. Threshing is the process of removing grain from its developing stalk and from the chaff or other material that covers it.

Q: What is the function of grain separator?

A: The paddy separator is a multipurpose cleaning machine, designed for the efficient separation of impurities in any kind of grain and cereal cleaning process. The equipment has two decks of adjustable sieves and ensures effective cleaning with vibration and an external aspiration.

Q: How does paddy separator work?

A: Paddy separators work by making use of the differences in specific gravity, buoyancy, and size between paddy and brown rice. White rice is produced by removing the bran layer and the germ from the paddy. The bran layer is removed from the kernel through either abrasive or friction polishers.

Q: How do you separate rice from the husk?

A: The weight of husk is greater than rice. Hence, winnowing is used. Winnowing is the method in which heavier components of the mixture are separated from the lighter substances with the help of wind. When poured, the heavier components fall down while the lighter ones fly aside with the wind.

Q: What is the principle of paddy separator?

A: Gravity paddy separator: This relies on the fundamental principle of gravity, leveraging weight changes to separate the rice. Centrifugal paddy separator: This type employs a spinning drum, creating a force that pushes the paddy outward, separating it from brown rice.

Q: Can paddy separator function effectively separate rice grains?

A: Paddy separator, is feasible for separating brown rice from paddy efficiently under reciprocating movement of sieve plate according to different bulk densities, specific gravities and surface friction coefficients between paddy and brown rice. It is particularly suitable for separating mixed or low uniformity grain to improve the purity degree of brown rice. There are two kinds of paddy separator, one is Single-bod, the other is Double-body. Good paddy separating effect can not only increase the whole output greatly, but also increase economic benefit enormously.

Q: Why paddy separator?

A: After De-husking of rice, Rice is required to be separated from paddy, for which paddy separator machine is used. It works on the principle of constant to and fro movement of inclined indented trays. It separate the material in to 3 parts ie. Brown rice, Husk & Mixture. Mixture is than sent back to the huskers for reprocessing.

Q: What are the usage of paddy separator?

A: Paddy Separator is used to separate rice from paddy.

Q: What are the benefits of paddy separator?

A: Higher output with adjustable speed (optional).
Advanced electrical panels which automatically controls the start and stop of the machine according to the availability of the raw material.
Stainless steel trays to minimize wear & tear and longevity of the machine.
Special Sensors for Automatic operation.

Q: What is the working principle of paddy separator?

A: To separate paddy and brown rice, it is necessary to fully understand the difference between paddy and brown rice to carry out effective separation. Paddy and brown rice are different in terms of particle size, density, suspension speed, and other technological characteristics.
With the help of the automatic classification produced by the grain-rough mixture during the movement, the brown rice with high density "sinks", and the rice with low density "floats", giving Separation of grain and roughness has created very favorable conditions, and the brown rice is separated by suitable equipment so that grain and roughness can be separated.

Q: What is the industry standard for paddy separators?

A: The quality of the paddy separator not only affects the technological effect of the subsequent process, but also has a close relationship with the quality, and rice output rate.
If the brown rice contains too much paddy, it will affect the process effect of rice milling and reduce the quality of the rice; if the brown rice in the back-hulled grain is too much, it will affect the rice husker capacity and rubber roller and will damage the brown rice and increase the Broken rice and broken waist.
According to the requirements of the Ministry of Agriculture's industry standard: the net brown rice that has been separated by machines should not contain more than 40 grains of paddy per kilogram of brown rice, and the grain content of the ridged grain should not exceed 10%.

Q: Why is the paddy separator important?

A: The rice hulling machine is a rice processing equipment based on plastic friction technology. Its uniqueness lies in its ability to improve the quality of rice and extend its shelf life. This machine plays a key role in rice production, ensuring its quality and cleanliness.
Plastic friction technology is the core of the automatic rice paddy separator machine. It separates the shell particles through plastic rubber rollers, thus keeping the rice bright. This technology is suitable for various types of rice and helps extend its shelf life and increase market value.
The rubber roller design of the automatic rice paddy separator machine is a brand new innovation. It adopts spring control to ensure that the machine will not be damaged by large or small stones. The robustness and durability of this design greatly reduces failure rates.
The automatic rice paddy separator machine is equipped with a small air separator, which provides 3 levels of air volume, which can effectively separate the rice husks and blow them to a long distance. This feature ensures the purity of the rice.
The hulling head of the automatic rice paddy separator machine is uniquely designed and uses rubber rollers, which makes the rice hulling process more efficient and reduces the risk of damage.

Q: How about plastic friction technology for paddy separators?

A: Plastic friction technology is the core of the automatic rice paddy separator machine. It separates the shell particles through plastic rubber rollers, thus keeping the rice bright. This technology is suitable for various types of rice and helps extend its shelf life and increase market value.

Q: Is the hulling rate of the paddy separator high?

A: Rubber brick paddy separator has high shelling rate and low rice breaking rate, but it has small processing capacity and high rubber consumption; The centrifugal paddy separator has a high shelling rate and a high rice breaking rate; The rubber roll paddy separator has low rice breaking rate, but relatively low shelling rate. Therefore, in actual production, one or two types of shelling equipment should be selected in combination based on the raw grain situation to achieve good shelling results.

Q: Why use a paddy separatorfor husk separation?

A: The materials that have been shelled by the paddy separator should be separated and removed in time, otherwise, it will not only affect the output and process effect of the next shelling equipment, increase the rubber consumption and power consumption, but also affect the process effect of the grain roughening separation. The current method for separating millet husks is mainly wind separation, which separates millet husks from millet and brown millet by utilizing their different suspension velocities. Commonly used separation equipment includes suction separators, circulation separators, vertical suction ducts, etc. The base of rubber roll paddy separator is generally equipped with a husk separator, which does not need to be additionally equipped, while the centrifugal paddy separator needs to be additionally equipped with a husk separator.

Q: What is the yield rate of paddy separators?

A: Most of the paddy separator machine are small size, light weight, easy to operate, economic and it can be used safety as long as the 220V power supply.
paddy separator machine is more effictive and economic than traditional rice mill.
It can reduce 30%-40% of the rice grains and every 100kg paddy can ground out 75-80kg finished rice. Also it can protect the nutrients of the rice surface not loss.
So paddy separator machine is very popular than traditional rice mill.

Q: What should be noted during the operation of the paddy separator?

A: The motor of paddy separator can't exceed 11kw.
The rubber roller should not touch the grease, and it can not be exposed to the sun or close to high temperatures.
When the rubber roller wears 3 mm in diameter, it should be replaced in time. If the screw head wears 2 mm, or if the width of the spiral part is 5 mm, replace them with a new one.
The bearing parts should be filled with oil regularly.
Regularly clean the rice husk fan, and remove the impurities on the surface.

Q: What are the methods of hulling for paddy separators?

A: The husking of millet is similar to that of rice, and the methods of husking are divided into three types: extrusion, end pressing, and impact. At present, the commonly used rice paddy separators are rubber roller paddy separator, rubber brick paddy separator and centrifugal paddy separator. When shelling millet, each of the three devices has its own characteristics.

Q: What are the functions of the air separator in the paddy separator?

A: The automatic rice paddy separator machine is equipped with a small air separator, which provides 3 levels of air volume, which can effectively separate the rice husks and blow them to a long distance. This feature ensures the purity of the rice.

As one of the leading paddy separator manufacturers and suppliers in China, we warmly welcome you to buy durable paddy separator made in China here and get quotation from our factory. All customized machines are with high quality and competitive price.

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