The outer trough wheel seed feeder forms several zones during the working process of the seed

The outer groove wheel seed shooter will form five areas in the process of work, and the outer groove wheel seed shooter is composed of a seed cup, a seed shaft, an outer groove wheel, a blocking sleeve and a seed tongue.

The seed box is packed under the seed box, and the seeds flow into the seed cup through the opening at the bottom of the box.

When the seeding shaft rotates, the outer sheave and the flower-shaped retaining ring rotate with the shaft, while the blocking sleeve does not rotate. Blocking sleeves and flower-shaped retaining rings prevent seed from flowing out of both sides of the sheave.

When the groove wheel rotates, the seeds in the groove rotate together with the groove wheel, and are filled in the groove one by one, and the seeds form a certain thickness of forced layer seed flow near the seed discharge mouth under the forced action of the groove teeth of the seed wheel, and the seed friction between the forced layer seed flow and the intermittent impact effect of the convex tip of the groove tooth on the seed are discharged from the seed discharge port at a lower speed.

The gap between the sheave wheel and the seeding tongue is called the seeding gap. If the gap is too small, the seed damage rate will increase. If the gap is too large, the stability of the seeding rate will be reduced. On the small groove wheel seed arranger, the seed tongue has three positions: low, medium and high, and the corresponding row gap is and 8 mm, which can be used to sow large, medium and small seeds.

By changing the direction of rotation of the sheave, the upper and lower rows of seeds can be realized. The lower row type is used to row medium and small seeds, and the gap between the rows remains unchanged; The upper row type can reduce the damage rate of large seeds, but the forced seeding effect of the upper row is slightly worse, and the uneven ground will affect the uniformity of seeding. Most of the domestic seed drills use the lower row type seed arranger.

The main characteristics of the rape seeder are as follows.

1) Outer groove wheel type seed discharger When working, the seeds are filled with the groove of the sheave by gravity one by one, and are driven by the genus sheave to rotate together for forced seeding, and the layer of seeds at the outer edge of the shege wheel is moved by the action of the outer edge of the shege wheel and the friction between the seed grains, and its movement speed decreases from the inside to the outside to the stationary layer. The amount of seed displacement of the outer groove wheel is the superposition of the forced layer and the driving layer. The essence of the process is to transform the seeds from groups to individuals through the action of seeds, and become a uniform and continuous seed flow.

2) Socket wheel seed discharger The working part is a cylindrical socket wheel, and the seeds fall into the rotating socket wheel hole by their own weight when working, and the size of the hole is designed according to the size of the seed and the number of seeds. With the rotation of the socket wheel, the seed cleaning part removes the excess seeds, and when it is turned to the lower seed opening, the seeds leave the hole by their own weight or the action of the seed pusher and fall into the soil.

3) The air-suction seeder seeder is equipped with a sealed air chamber and is connected to the air pump through the gas pipeline. Under the action of the air pump, a negative pressure is formed in the suction chamber, and the seeds are adsorbed on the seed suction hole on the surface of the suction tray. When the seed suction disc is turned downward, the seeds behind the disc are no longer subjected to negative pressure due to the separation from the suction chamber and fall into the seed bed due to their own weight.

Briefly describe the working principle of the outer groove wheel BAI seed discharger. du

When working, the seed shaft drives the groove wheel to rotate, and the seeds filled with DAO in the groove wheel rotate with the groove wheel (forced layer), and are forced to be discharged from the seed row under the push of the gear teeth. The outer layer of seeds, which is located outside the groove, is gradually moved and discharged at a slower speed towards the seed discharge port under the drive of friction between the seeds (driving layer). The seeds in the seed box are continuously replenished to the seed box, so that the seed row is continuously discharged.

1.Preparation and adjustment before operation (1) Fastening and oil injection. Before the use of the machine, check the fastening parts, and whether the rotating parts rotate flexibly.

Lubricating the chain drive and other rotating parts. (2) The use of seed (fertilizer) device. The wheat no-tillage seeder adopts a semi-precision outer trough wheel seeder, which pulls out the pull-out plate when sowing, and at the end of sowing, the seeds are cleaned and pushed into the pull-out plate.

3) The limit of the suppression wheel. In the transport state, the rocker arms on both sides of the pressing wheel are fixed by two limiting pins on the upper and lower sides of the fan-shaped plate; When working, the upper limit pin must be loosened and placed in the appropriate hole position on the sector plate. (4) Adjustment of seed (fertilizer) device.

Coarse adjustment: loosen the locking nut of the adjustment handwheel, so that the gear ring exits the meshing position, rotate the handwheel for adjusting the amount of seeding until the seeding rate indication reaches the predetermined position, and then tighten the lock nut. Fine tuning:

The suppression wheel is suspended in the air, according to the normal driving speed and direction, the suppression wheel is rotated 10 times at a constant speed, the seeds discharged by various pipes are received, the weight of the seeds discharged by each row of seeds and the total weight of the seeds are weighed, and the average amount of seeds discharged by each row and the amount of sowing per mu are calculated. When adjusting the sowing rate, it is necessary to clean the seeds (or fertilizers) in the seed (fertilizer) chute until it does not affect the movement of the sheave. In order to meet the agronomic requirements, it should be carefully and repeatedly debugged.

After adjustment, tighten the lock nut. (5) Adjustment of the left and right, front and rear levels of the machine. Raise the implement, make the rotary knife and the ditch opener leave the ground, hang the left and right diagonal tie rods after adjusting the tractor, and keep the tip of the rotary knife, the hook opener, and the tool at the left and right level; Adjust the length of the upper tie rod in the tractor suspension so that the no-till seeder is level front and rear.

7) Inspection of rotation clearance. Before operation, the relative position of the rotary knife and the trencher should be carefully checked so that it does not collide. 2.

Use and adjustment in the operation (1) Get started. Start the tractor, rotate the knife off the ground, combine the power output, idle for half a minute, hang up the working gear, slowly release the clutch, and operate the hydraulic lifting at the same time, and then increase the throttle to make the machine gradually sink into the soil until normal operation. (2) Forward speed.

Under the condition that the tractor is not overloaded, and the stubble breaking and sowing meet the agronomic requirements, the general forward speed is controlled at 3 4km h. (3) Adjustment of sowing and fertilization depth. It can be adjusted in two ways.

One is to change the length of the tractor rear suspension pull rod and the position of the upper limit of the rocker arm on both sides of the two groups of suppression wheels, which can change the sowing and fertilization depth synchronously, and the ploughing depth can also be changed synchronously. The second is to change the installation height of the seed and fertilizer furrower, and the sowing and fertilization depth can be adjusted, but the relative position of the seed fertilizer depth remains unchanged. (4) Adjustment of the suppressor.

The adjustment of the suppression strength in the operation can be realized by changing the position of the rocker arm limit pins on both sides of the two groups of pressure wheels, and the more the upper limit pins move down, the greater the pressure of the suppression.

When adjusting the seeding amount of the seeding machine, the seeding amount of each seeder on a seeder should be consistent, and the error of the maximum seeding amount shall not exceed 2%, otherwise, it is necessary to fine-tune the working length of the outer groove wheel of a single seeder, and re-carry out the seeding test until it is qualified.

You can try it at home, and each model is different, and you can see it if you experiment with corn kernels at home and pull them up 5 or 6 meters in your yard.

Two steps.

The shape of the holes on the seed tray is determined by the shape of the seeds, the size and the number of grains in each hole, and they are arranged according to a certain distance between them. The spacing of plants (holes) is related to the rotation speed of the seed tray and the number of holes.

This seed dispenser is mainly used on the seeder for precision seeding of corn, sorghum, soybean and other seeds. The operation speed is generally not more than 6km h, otherwise the quality of seed arrangement will deteriorate significantly.