Rice Processing Expert: Maintenance Manual for Sand Roller Rice Millers

In the field of rice processing, sand roller rice millers are key equipment for improving production efficiency and rice quality. However, as the usage time increases, the abrasion problem of the sand roller as the core component of the rice miller cannot be ignored. This article will deeply explore the specific manifestations of sand roller abrasion, provide suggestions for timely replacement, and share maintenance techniques for various components of the rice miller to facilitate the smooth progress of the rice milling business.

I. Significant Signs of Sand Roller Abrasion

Sand roller diameter: After long-term use, the abrasive particles on the surface of the sand roller will gradually fall off, resulting in a decrease in diameter. This kind of wear will form pits on the surface of the sand roller, and the spiral groove will become narrower and shallower. Eventually, it may lead to flattening and disappearance, thereby reducing the grinding effect and affecting the uniform processing of paddy.
Decline in rice milling efficiency: The worn sand roller cannot effectively mill paddy, resulting in a decrease in rice yield and thus affecting the overall output of the rice miller.
Increase in broken rice rate: Severely worn sand rollers are more likely to break paddy during the milling process, increasing the proportion of broken rice in the finished product. This not only affects the appearance of rice but also reduces the overall quality of the product.
Reduction in precision: Sand roller abrasion will lead to uneven roughness and whiteness, which directly affects the appearance and taste of rice and is an important indicator of sand roller abrasion.

II. How to Replace Worn Sand Rollers in a Timely Manner

Regular inspection: Before operation, be familiar with the working principle and operation method of the sand roller rice miller. Check whether the installation position of the sand roller is correct, and whether there are cracks and wear marks on the surface to ensure it is firmly fixed.
Timely replacement: Once cracks or severe wear are found on the sand roller, stop the machine immediately and replace it. Delayed replacement will aggravate wear and affect production efficiency and product quality.
Screening raw grain: To prevent hard objects from entering the whitening chamber and aggravating sand roller wear, raw grain should be screened regularly to ensure the purity of the material.
Regular cleaning: Impurities such as rice bran are easily adhered to the screen frame and cause blockage, affecting machine efficiency and whitening effect. Therefore, it is necessary to regularly remove rice bran and blockages on the frame.

III. Maintenance Techniques for Various Components of Sand Roller Rice Millers

Rice sieve:
Function: Screening and auxiliary friction, removing the husk of brown rice and making the rice grains smooth.
Maintenance: Regularly check whether the sieve holes are blocked and clean them in time to ensure the screening effect.
Spiral conveyor:
Function: Push the material evenly into the whitening chamber to improve rice milling efficiency.
Maintenance: Check whether the thread and transmission parts are operating normally to avoid poor material transportation due to looseness or damage.
Stripe:
Function: Fix and support the rice sieve to prevent displacement.
Maintenance: Regularly check the fastening of the stripe to ensure it is firm and not loose.
Sand roller (core component):
Function: Mill the cortex of brown rice, remove the husk and press the rice grains.
Maintenance: In addition to regularly checking the wear condition and replacing it in time, keep the surface of the sand roller clean to avoid blockage and aggravated wear.

By implementing the above measures, the service life of the sand roller rice miller can be effectively extended, and the rice milling efficiency and quality can be improved. Let's jointly commit to the improvement of rice processing technology and create a bright future for the rice processing industry.