Pneumatic combined rice seed metering device

Abstract

The invention relates to a pneumatic combined rice seed metering device. 15 rows of 12 hemispherical indents in each row are uniformly arranged on the outer surface of a roller, the position, oppositeto the centers of the indents, of the inner surface of the roller is provided with 15 annular grooves, the indents are machined in the outer surface of the roller, the annular grooves are formed in the inner surface of the roller, the indents and the annular grooves penetrate through each other to form long and thin rectangular narrow slits, and the effect of adsorbing rice bud seeds is achievedthrough the internal and external pressure difference of the annular grooves. When the roller indents are filled with seeds, firstly, seed filling is completed under the combined action of self-filling of the gravity of the seeds and the pressure difference between the two ends of the narrow slits, and the purpose of ensuring stable seed filling is achieved; before the bud seeds are carried by theroller indents and conveyed to a seed discharging position, the pressure difference between the two ends of the narrow slits disappears, and the conveying process is completed completely with the help of the protection effect of a seed protection belt; and when the roller discharges seeds to a growing tray, the seeds can be separated from the roller and sown on the growing tray due to the gravityof bud seeds and the action of force generated by outward release of potential energy of seed bouncing steel wires, the seed bouncing steel wires penetrate through the narrow slits to complete the cleaning effect on suction holes, the seed suction capacity of the seed metering device is recovered, and the seed metering device can continuously and stably work. Therefore, the designed seed meteringdevice can adapt to the existing 15-row 25-column type rice growing soft trays to carry out high-precision operation.

Description

technical field [0001] The invention belongs to the field of agricultural machinery, and in particular relates to a pneumatic combined rice seeding device, which has a high-precision seedling tray rice seeder. Background technique [0002] As we all know, mechanical transplanting is the central link of the whole process of rice mechanization, and the mechanization and standardization of rice seedling raising is the prerequisite for implementing mechanical transplanting. Therefore, it is very important to develop new rice seeding equipment with superior performance, stability and reliability. [0003] At present, the mechanical structure of the existing vibrating rice seedling and metering device is relatively simple, and the adjustment is convenient, but its seedling raising method is only suitable for manual transplanting. The injury is serious and the productivity is low. At present, the existing pneumatic rice seedling metering device is precisely suitable for the seedli...

AI Technical Summary

Problems solved by technology

[0003] At present, the mechanical structure of the existing vibrating rice seedling and metering device is relatively simple, and the adjustment is convenient, but its seedling raising method is only suitable for manual transplanting. Serious injury, low productivity

At present, the existing pneumatic rice seedling metering device is precisely suitable for the seedling tray breeding required by mechanical transplanting, but its suction cup structure and suction needle structure are likely to cause the suction hole to be blocked during the seed suction process, and it is very inconvenient to clean. , seriously affecting the seeding accuracy and seeding efficiency

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