Negative pressure type precise seed discharging device
A kind of seed metering device and negative pressure technology, which is applied in the field of negative pressure precision seed metering device, can solve the problems of high seed damage rate, poor uniformity, difficulty in achieving precise seeding, etc., and achieve high stability and uniformity Good results
Active Publication Date: 2015-01-21
河北凯阔食品集团股份有限公司
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Problems solved by technology
Mechanical seed metering devices have defects such as large seeding pulsation, poor uniformity, low stability, and high seed damage rate, and it is difficult to meet the agronomic requirements of precision seeding
Method used
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[0009] For the structural composition of a negative pressure precision seed meter used for precision sowing of wheat and other crops, please refer to the attached figure 1 . The seed metering device consists of a seed metering device housing (5), a seed filling height control panel (3), a seed blocking block (15), a seed drop clearing sheet (6), a negative pressure tube shaft (11), and a dynamic seed discharge disc 1 (7), dynamic seed disc 2 (9), static seed disc (1), fixed sleeve (10), flat head seam control screw (12), O-ring (17), spring (4), convex Taiwan (13) is formed. Both sides of the dynamic seed tray 2 (9) are recessed to form a half negative pressure chamber, and 3 blind holes are processed on both sides, and the dynamic seed tray 1 (7) is opposite to the dynamic seed tray 2 (9). One side of the inner side is recessed to form a half negative pressure chamber, and 3 blind holes are processed inside, and threads are processed in the blind holes, and one end of the f...
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The invention provides a negative pressure type precise seed discharging device consisting of a seed discharging device shell (5), a seed filling height control plate (3), a seed stop block (15), a seed dropping blockage removing piece (6), a negative pressure tubular shaft (11), a movable seed discharging plate 1 (7), a movable seed discharging plate 2 (9), a static seed discharging plate (1), a fixing sleeve (10), flat head type seam control screws (12), an O-shaped sealing ring (17), a spring (4) and a boss (13), wherein the movable seed discharging plate 1 (7) and the movable seed discharging plate 2 (9) are connected through 3 flat head type seam control screws (12), a negative pressure chamber is formed in the space formed in a manner that the movable seed discharging plate 1 (7) and the movable seed discharging plate 2 (9) are connected through 3 flat head type seam control screws (12), a groove with a U-shaped cross section is formed in the part opposite to an outer edge and used for storing uniformly absorbed and distributed seeds, the width of the groove is 4mm, the depth of the groove is 4mm, a gap (16) is formed in a position, away from the circle center direction for 4mm, on the outer edge of the groove, the width of the gap can be controlled by the flat head type seam control screws (12), and the movable seed discharging plate 1 (7) is fixed together with the negative pressure tubular shaft (11) through the fixing sleeve (10).
Description
technical field [0001] The invention relates to a seed metering device in a sowing machine, in particular to a negative pressure precision seed metering device. Background technique [0002] At present, there are mainly two types of seed metering devices used for crop sowing operations: mechanical and pneumatic. In my country, pneumatic seed metering devices are mainly used for sowing on-demand crops such as corn and soybeans, while seed metering devices for row crops (such as wheat) are mostly mechanical groove wheel seed metering devices. Mechanical seed metering devices have defects such as large seeding pulsation, poor uniformity, low stability, and high seed damage rate, and it is difficult to meet the agronomic requirements of precision seeding. Therefore, it is of great practical significance to design a pneumatic precision metering device for drill crops. Contents of the invention [0003] The invention provides a negative pressure precision seed metering device ...
Claims
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Inventor 赵晓顺张晋国马志凯于华丽杜雄桑永英赵金马洪亮
Owner 河北凯阔食品集团股份有限公司