Seeder for raising rice seedlings in rice field

Abstract

The invention provides a seeder for raising rice seedlings in rice field. The seeder comprises a seed box, an externally-grooved seed-metering wheel arranged in front of a seed-metering opening of the seed box in the seed flowing direction, and a rotary-drum brush seed-clearing wheel arranged above the externally-grooved seed-metering wheel and matched with the externally-grooved seed-metering wheel, wherein the seeder is provided with a prolate brush-type seed-protecting device, the prolate brush-type seed-protecting device is provided with a prolate brush, the length of the prolate brush is matched with that of the externally-grooved seed-metering wheel, and the side surface of the prolate brush is attached to the front side of the externally-grooved seed-metering wheel. Brush hair on the prolate brush-type seed-protecting device is flexible and independent and cannot damage seeds, the brush hair and the seeds do not affect each other, bulges at certain points of the seeds have no influence on the left and the right sides, the phenomena of seed clamping and damage cannot occur, and the seeds can be better protected, therefore the prolate brush-type seed-protecting device is especially suitable for the seeders which have seed-metering wheels with small diameter (for example, the diameter of an externally-grooved seed-metering wheel is less than or equal to 80mm).

Description

technical field [0001] The invention relates to the field of rice seedling raising and sowing machines. Background technique [0002] In the seedling sowing of rice seedlings for rice transplanters, due to the large amount of seeding required, most of the commonly used rice seedling seedling seeders use outer groove wheel seed metering devices, but the outer groove wheel seed metering devices currently used have many problems: rice seeds Seeds need to be soaked to accelerate germination, and the outer groove wheel is made of hard material, which is easy to cause damage to the seeds; the basic structure of the outer groove wheel type seed metering device is equipped with a seed protection device, whose function is to make the seeds filled in the outer groove wheel row The seeds in the groove of the seed wheel are fixed in the groove, and then released at the specified position (seeding opening) to prevent the seeds from falling out of the groove when they do not reach the spe...

AI Technical Summary

Problems solved by technology

[0002] In the seedling sowing of rice seedlings for rice transplanters, due to the large amount of seeding required, most of the commonly used rice seedling seedling seeders use outer groove wheel seed metering devices, but the outer groove wheel seed metering devices currently used have many problems: rice seeds Seeds need to be soaked to accelerate germination, and the outer groove wheel is made of hard material, which is easy to cause damage to the seeds; the basic structure of the outer groove wheel type seed metering device is equipped with a seed protection device, whose function is to make the seeds filled in the outer groove wheel row The seeds in the groove of the seed wheel are fixed in the groove, and then released at the specified position (seeding opening) to prevent the seeds from falling out of the groove when they do not reach the specified position. Usually, the seed protection device is the outer diameter of the outer groove wheel Composite arc-shaped body composition

Therefore, the outer groove wheel type seeders used for rice seedling seedling seeding seeders are all used in large diameters, so that the mechanism of the seeder is also too large, and it is not suitable for rice seedling seeding seeders in the field.

In addition, for the rice seedling seedling seeding machine, the seed metering device needs to have a wide horizontal sowing width, and the fixed and rigid arc-shaped seed protection plate will affect the left and right sides, making the seed damage more serious; In the external groove wheel type seed metering device, the excess seeds removed and the seeds from the seed inlet enter the seed filling area at the same time to be filled into the wheel groove, so that the seeds are easy to accumulate in the seed filling area, affecting the normal filling and clearing of seeds

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