Background technology

Rice is one of the staple foods for human beings. The carbohydrates in rice are mainly starch, and the proteins it contains are mainly gluten, followed by gliadin and globulin. The biological value of protein and the composition ratio of amino acids are higher than those of cereal crops such as wheat, barley, millet and corn, making it a relatively high type of cereal protein.

It is the finished product of rice after washing, shelling, grinding and finishing. Dust removal is an important step in all processing procedures. In the existing technology, the common practice is to put the rice into a sieve and stir it, and then remove the dust with air. This dust removal method is prone to cause significant friction and collision between the rice and the screen, leading to the breakage of the rice and affecting its overall quality. Moreover, the rice at the bottom of the sieve is difficult to stir and it is hard to separate the rice from the dust, which seriously affects the dust removal effect of the rice.

Technical elements

The purpose of rice processing equipment is to provide a rice processing technology and solve the problems of low quality of rice processing and poor dust removal effect of rice in the background technology.

To achieve the above goals, the basic plan for rice processing equipment stipulates that the rice processing technology includes the following steps:

S1, coarse rice processing: After harvest, the rice is directly dried to remove moisture and impurities. Then, the husks and coarseness of the rice are separated. The rice is milled and graded to obtain coarse rice, which is sent to the rice storage bin for cooling.

S2. Rice Blending: Prepare the required products based on the variety characteristics, appearance and taste of the rice. That is, set up an automatic rice blending device controlled by a computer at the bottom of the silo, and blend the rice from 2 to 6 silos in proportion.

S3, secondary dust removal: The dust removal in the rice processing equipment is used to clean the rice for 20 to 40 minutes. The dust removal equipment includes a dust removal mechanism, connecting pipes, a rice cleaning mechanism and a rice collection trough connected in sequence. The rice cleaning mechanism includes a rice cleaning cavity equipped with a blowing port and an ash discharge port. The dust removal mechanism includes a dust removal unit, a stirring unit and a screening unit.

S4, Deep Processing: After the rice is dusted by the rice processing equipment, it undergoes polishing, color selection and grading to obtain polished rice.

S5. Inspection and Distribution: Inspect the polished rice. Qualified polished rice is sent to the finished product warehouse, while unqualified polished rice is sent to the reprocessing warehouse.

S6. Packaging: Package the polished rice in the finished product warehouse.

The principle of the rice processing equipment is that when the dust removal step is carried out, the rice is poured into the sorting unit, and the stirring unit and the sorting unit are started. The stirring unit will stir the rice loose. During the stirring process, the stirring unit will not collide with the rice, thus preventing the rice from breaking during the stirring process. The screening unit can separate rice from dust and lift the separated dust to the top of the shell. At this point, the dust removal unit starts up and collects the rising dust. After the first dust removal, the rice is discharged from the screening unit to the rice cleaning mechanism through the connecting pipe. At this point, the air blown from the dust outlet enters the rice cleaning chamber. The falling rice undergoes secondary dust removal, and the residual dust mixed in the rice is blown to the dust outlet and discharged from the rice cleaning chamber. Meanwhile, under the effect of gravity, the rice gradually falls into the rice collection trough for collection.