Anti-clogging hole cleaning device and method for disc suction seed metering device

Abstract

The invention provides a disc suction type seed metering device anti-clogging hole cleaning apparatus and a method thereof. The device comprises a suction disc, seed cleaning brushes, a brush plate, a right angle support, a transmission mechanism, a flange bearing seat, a left limit switch and a right limit switch. The seed cleaning brushes made of a high elastic material are mounted in the suction disc inner cavity of the disc suction type seed metering device, and brush grooves are processed on the suction hole array of the panel. During positive pressure seed metering operation of the seed metering device, a stepper motor drives the seed cleaning brushes to do reciprocating linear movement in the suction disc inner cavity, the ends of the seed cleaning brushes are located in the brush grooves, by means of the elastic restoring force of the seed cleaning brushes, the ends of the seed cleaning brushes stretch into the suction holes and generate a contact force toward the outside of the suction holes to the grains, glumes or other impurities stuck in the suction holes, and under the combined action of the contact force and the positive pressure air current, the hole cleaning effect can be reached, and the continuous operation performance of the seed metering device is improved.

Description

technical field [0001] The invention belongs to the technical field of precision seedling raising and sowing, and in particular relates to an anti-clogging hole cleaning device and a method for a disc suction seed metering device. Background technique [0002] Seedling raising and seeding is an important link in agricultural production, and the seed meter is the core component to realize mechanized precision seeding. The disc suction seed metering device is mainly composed of two parts: the vibrating seed disc and the suction cup. By applying a small high-frequency excitation to the seed disc, the population is in a discrete state in the seed disc. According to the sowing requirements, the suction holes are processed on the sucker. Vacuum negative pressure is applied, the seeds are adsorbed on the suction hole, and then move to the appropriate position above the seedling tray with the suction cup, then the positive and negative pressure conversion is performed, and positive ...

AI Technical Summary

Problems solved by technology

Rice grains are mainly composed of chaff and brown rice. The chaff is light in weight and has a certain degree of elasticity. Under the action of the seed suction negative pressure airflow field, the chaff is easily stuck into the suction hole, reducing the area of ​​the negative pressure airflow channel and reducing the suction hole. In some cases, after some seeds are absorbed, affected by factors such as their irregular shape, rough surface and adsorption posture, the seeds only rely on their own weight and positive pressure when sowing. Unable to fall, causing the suction hole to be blocked, directly causing missed seeding

Therefore, how to design a hole cleaning device applied to the disk suction type to avoid the blockage of the suction hole during the operation has important theoretical significance and practical value for improving the continuous operation performance of the seed meter. There is no public research report so far.

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