How does the rice thresher work?
The rice thresher generally includes the following main parts: a threshing device, a separating device, a drain cleaning device, a transmission, a frame, and the like. Among them, the threshing device, the separating device, and the grain clearing device are the three major components of the rice threshing machine.
The working principle of the rice threshing machine is that the cut grain enters the feeding inlet of the rice threshing machine into the threshing device consisting of the threshing drum and the intaglio, and the short exudate passes through the grid intaglio to enter the clearing sieve and the fan. The cleaned grain device is cleaned; the long extract is separated into the separation device for separation of the stem and the grain, the long stem is discharged outside the machine, and the short exudate such as the grain passes through the sieve hole on the separation device to enter the lower clear The grain device is cleaned; under the combined action of the fan and the cleaning sieve, fine and light debris such as hulls are blown out of the machine, and the clean grain enters the grain collecting device through the grain collecting device.
more about rice thresher machine
Grain threshing principle:
(1) Impact threshing: threshing is carried out by the mutual impact of the threshing element and the grain head. The higher the impact speed, the stronger the threshing ability, but the greater the breaking rate.
(2) Rubbing and threshing: The grain is threshed by the friction between the threshing element and the grain, and between the grain and the grain. The size of the threshing gap of the threshing device is critical.
(3) Comb threshing: threshing by applying a pulling force to the grain by the threshing element.
(4) Rolling and threshing: threshing by applying a pressing force to the grain by the threshing element. The force acting on the grain at this time is mainly the normal force along the grain surface.
(5) Vibration threshing: threshing by applying high-frequency vibration to the grain by the threshing element.
The above-mentioned several kinds of threshing methods are summarized in the long-term production practice process. Different crop types and crop varieties, different storage methods and post-processing methods have different threshing methods.
