SU1741649A1 - Air-operated transport system of cotton harvesting machine - Google Patents

Abstract

Use: in agricultural machinery engineering. SUMMARY OF THE INVENTION: The device comprises a centrifugal fan, in the casing 6 of which guide blades 7 are mounted on the side wall. In the interface zone of the Discharge pipe 3 there is an edge that overlaps the flow area of the casing 6. The suction 2 and discharge 3 pipes are coaxially and form in mating them with the cover is the linear part. 1 hp f-ly, 2 ill.

Description

/// /// / / fty // ////// ff / m / 0 # ww Phage. 7

This invention relates to an agricultural machinery industry and can be used in a cotton harvesting machine for transporting raw cotton from a harvesting machine to a storage bin.

The purpose of the invention is to increase work efficiency and reduce the damage of raw cotton.

Figure 1 shows the pneumatic conveying system of the cotton picker; Figure 2 shows the inlet throat of a centrifugal fan with a safety net.

The pneumatic conveying system consists of the suction 2 and the discharge nozzles 3, built into the casing of the fan, the exhaust air duct 4; the suction 2 and the delivery 3 nozzles are embedded in the fan casing 6, on one of the side walls of which concentric with the impeller 8 are mounted guide vanes 7, each of which is mounted obliquely in the direction of rotation of the blades of the fan 8. To the flange of the discharge pipe of the pneumotransport system a slit-shaped receiving chamber 1 of the cotton-picker 9 is connected.

Pneumotransport system works as follows

The clean air sucked by the blades of the impeller 8 of the fan from the atmosphere through the inlet throat of the fan 5 is compressed by the action of the blades of the rotating impeller and thrown onto the inner wall of the fan casing 6 along the rotation of the fan impeller and further to the suction fan 2. and 3 discharge pipe and duct 4.

The suction effect created in the nozzle 2 and transmitted to the slit-like receiving chamber 1 provides for taking and transporting a mixture of air and cotton coming from the harvesting device 9 through the receiving chamber tube.

With the passage from the intake pipe 2 to the discharge pipe 3

the air sucked by the blades of the impeller squeezes the mass of raw cotton from the blades, which eliminates damage to the seeds and fibers, while the blades themselves are protected

from sticking greens and dust.

The design of the deflector blade is extended and installed in the interface area of the fan casing with the discharge nozzle with the possibility of overlap

the flow area of the casing ensures that raw cotton and impurities are not drawn into the fan.

The presence of a straight line interface area suction and injection

nozzles ensure their smoothness and exclude damage to cotton fiber and grounding of the deflector cavities from contact with the passing mass of cotton.

Claims (2)

1. A pneumatic conveying system for a cotton harvesting machine containing a centrifugal fan with an impeller and suction and discharge nozzles, embedded in the fan casing, characterized in that, in order to increase efficiency and reduce the damage of raw cotton, in the fan casing, on one of its side walls, guide vanes are mounted concentrically to the impeller, each of which is mounted obliquely in the direction of rotation the impeller, with the blade, is located in the interface the discharge nozzle with the casing is made elongated and installed with the possibility of blocking the casing flow area, and the suction and discharge nozzles are located coaxially, forming a straight line section in the interface with the casing. 2. A system according to claim 1, characterized in that the blades located in the interface zone of the suction nozzle with the housing are made with the possibility of overlapping the start of the next blade with the end of the previous blade. Fie.2