Impurities have a great impact on the daily production of stone mill flour machinery. On the one hand, they will cause wear to the parts of the equipment, on the other hand, they will also reduce the quality of processed products and improve the ash content in products. Therefore, manufacturers need to pay attention to the cleaning of impurities in raw grain of stone mill flour machinery if they want to obtain more income. So what are the basic requirements for impurity cleaning of stone flour machinery?

杂质会造成石磨面粉机生产故障：如含有秸秆、杂草、纸屑、麻绳等体积大、质量轻的杂质，容易使输送管道堵塞，妨碍生产顺利进行，或阻塞石磨面粉机的喂料机构，使进料不匀，减少进料量，降低设备的工艺效率和加工能力。有时还会堵塞筛孔，使粮粒混入大杂质中，造成粮食的浪费。

Impurities will cause the production failure of the stone mill flour machine: for example, containing impurities with large volume and light weight such as straw, weeds, paper scraps and hemp rope, it is easy to block the conveying pipeline, hinder the smooth progress of production, or block the feeding mechanism of the stone mill flour machine, make the feeding uneven, reduce the feeding amount, and reduce the process efficiency and processing capacity of the equipment. Sometimes, the screen hole will be blocked to make the grain mixed with large impurities, resulting in the waste of grain.

杂质可能导致石磨面粉机损坏。如杂质中含有石块、金属等坚硬杂质，在加工过程中容易损坏石磨面粉机清理机械，影响设备工艺效果，增加维修费用，缩短设备使用寿命，甚造成工伤事故和设备事故;坚硬杂质与设备金属表面间的碰撞及摩擦，还有可能产生火花，引起火灾及粉尘爆炸。

Impurities may cause damage to the stone flour mill. If the impurities contain hard impurities such as stones and metals, it is easy to damage the cleaning machinery of the stone mill flour mill during processing, affect the process effect of the equipment, increase the maintenance cost, shorten the service life of the equipment, and even cause industrial accidents and equipment accidents; The collision and friction between hard impurities and the metal surface of the equipment may also produce sparks, causing fire and dust explosion.

降低石磨面粉成品品质。物料中的杂质含量高，这些杂质在加工的时候混入面粉成品中，如不清理，会降低成品纯度，影响成品和副产品的质量。因此，石磨面粉机须对杂质进行清理，以保证产品质量和生产。

Reduce the quality of stone flour products. The content of impurities in the material is high. These impurities are mixed into the finished flour during processing. If they are not cleaned, the purity of the finished product will be reduced and the quality of the finished product and by-products will be affected. Therefore, the stone flour mill must clean up the impurities to ensure product quality and production safety.

而面粉厂的规模大小直接影响工艺流程的繁简和选用设备的类型及数量。对于大中型厂而言，清理流程相对说来要完善些;小型厂由于投资条件的限制，设备较少，清理流程也简单些。但为了保证产品质量，清理流程不应因为厂小而过于简略。因此，在这种情况下，可选用结构紧凑、具有多种功能而且工艺效果较好的组合清理设备，以保证基本的清理工序和必要的清理道数。

The scale of flour mill directly affects the complexity of process flow and the type and quantity of equipment. For large and medium-sized plants, the cleaning process should be relatively improved; Due to the limitation of investment conditions, small plants have less equipment and the cleaning process is simpler. However, in order to ensure product quality, the cleaning process should not be too simple because the plant is small. Therefore, in this case, the combined cleaning equipment with compact structure, multiple functions and good process effect can be selected to ensure the basic cleaning process and the necessary number of cleaning passes.