Cutting longitudinal flow threshing separation and cleaning device

Abstract

The invention relates to a tangential-longitudinal-flow threshing, separating and cleaning unit which comprises a tangential-longitudinal-flow double-drum threshing and separating device, a threshed grain conveyer, a dual-duct air-and-screen cleaning device, a kernel-and-residue conveyer, a transmission system and a frame. A tangential-flow threshing and separating device mainly comprises a tangential-flow threshing roller, a tangential-flow cavity plate and a tangential-flow top cover. A longitudinal-axial-flow threshing and separating device mainly comprises a longitudinal-axial-flow threshing drum, a conical guide hood, a longitudinal-axial-flow top cover and a longitudinal-axial-flow cavity plate. The threshed grain conveyer comprises a tangential-flow threshed grain shaker plate and a longitudinal-axial-flow threshed grain shaker plate. The dual-duct air-and-screen cleaning device comprises a dual-duct multi-blade axial-flow fan and a double-deck vibrating sieve. The kernel-and-residue conveyer comprises a residue screw, a secondary residue outlet and a kernel screw. The tangential-longitudinal-flow threshing, separating and cleaning unit can meet the harvesting requirement of crops for 3.5-7kg / s, such as rice, wheat, rape, barley, beans and the like, is capable of operating for 10-20 mu per hour, and is high in threshing and separating capacities, low in kernel loss rate and low in impurity rate.

Description

technical field [0001] The invention relates to the technical field of manufacturing mechanical threshing and cleaning devices for agricultural crops, in particular to a cutting and longitudinal flow threshing, separating and cleaning device, which can be widely used in high-performance harvesting of rice, wheat, rape, barley and beans. Background technique [0002] With the continuous renewal of crop varieties and the gradual increase in output, especially the introduction of policies such as encouraging the flow of rural land use rights and the integration of fragmented land, the large-scale production of modern agriculture in my country is gradually taking shape. higher requirements. [0003] The traditional full-feeding horizontal axial flow combine harvester is restricted by the horizontal space size of the machine, and its core working parts, threshing, separation, and cleaning device capabilities are obviously limited, which can no longer meet the development needs of ...

AI Technical Summary

Problems solved by technology

[0005] Chinese patent ZL03250419.5 discloses a tangential flow variable longitudinal axial flow control and combination device and a Chinese patent ZL00137715.9 discloses a combined tangential flow and longitudinal axial flow threshing separation device, which consists of a tangential flow threshing device, a light cylinder and a toothed plate cylinder The auxiliary feeding device and longitudinal axial flow threshing device have complex structure, large volume and high cost. They are generally configured on large wheeled combine harvesters with a feeding rate of 6-8kg / s and a cutting width of more than 4 meters. It is 15-20 mu / hour. This device works well when harvesting dry crops such as wheat and rapeseed. When harvesting rice that is difficult to remove and has high moisture content, it consumes a lot of power and is prone to blockage failures

When the device harvests high-yield rice with an yield of more than 750 kg per mu, the total loss rate and impurity rate of the machine will increase significantly, the power consumption will increase, and the operating efficiency will decrease significantly.

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