RU1813347C - Van for the transportation of technological product of agricultural machine - Google Patents

Abstract

The invention relates to agricultural machinery. SUMMARY OF THE INVENTION: A fan for transporting a technological product of an agricultural harvesting machine consists of a housing, a cover, a rotor and a drive element. The rotor is made of a hub, a disk, a working and rear blade plate. The plates diverge to the periphery from the line connecting the contact point of the hub with the disk and the extreme point of the circuit connecting the plates to each other. The invention improves the reliability of the fan by reducing vibration. 2 ill.

Description

ate with

The invention relates to the field of agricultural machine-building, in particular to crushers of combine harvesters, and can be used in other fields of mechanical engineering when transporting bulk materials by air flow.

The purpose of the invention is to increase the reliability of an agricultural machine by reducing fan vibration.

In FIG. 1 shows a section through a fan for transporting a technological product of an agricultural machine; in FIG. 2 is a view A in FIG. 1.

A fan for transporting a technological product of an agricultural machine is attached to the mechanism supplying the product and consists of a housing 1, a cover 2, a rotor 3, and a drive element, for example, a V-belt pulley 4 installed

on the axis of the rotor 3. Rotor 3 is a unit welded from a hub 5, a disc 6, a working 7 and a rear 8 of the blade plate.

The technological process in the fan is as follows.

The feed mechanism of the agricultural machine directs the technical product that is not driven by a pulley 4 with an angular speed ft) rotor 3. The technical product enters the working plate 7 of the rotor 3 and, due to the centrifugal forces and aerodynamics of the air flow created by the rotating rotor 3, is transported in the necessary direction. In this case, small dust particles contained in the technical product interact with the working plate 7 of the rotor blade 3 and penetrate through the welds of the plate 7 to the hub 5 and to the disk 6 into the space between the working plate 7 and ty00

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with

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with the left plate 8. Due to the fact that the plates 7 and 8 flow to the periphery from the diagonal of the blade configuration, a triangular hole 9 of an unclosed volume forms on the outer diameter of the rotor 3, and a gap 10 is made on a part of the length of the rear plate 8, between it and the disk 6, , the blades self-clean due to the through passage of dust through the open volume of the blade. This is accomplished by the action of centrifugal forces and air flow, which coincides with the centrifugal forces. The direction and occurrence of the air flow is explained by the aerodynamics of the centrifugal fan, in which the high speed of the air flow at the periphery of the rotor 3 causes a vacuum in this zone and air intake from the central or axial part of the rotor 3 of the fan.

Thus, the use of the proposed fan design allows

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it can be used successfully when transporting bulk materials using the self-cleaning effect of the rotor blade, which significantly increases the reliability of the machine and ensures the strength of the fan structure.

Claims (1)

SUMMARY OF THE INVENTION A fan for transporting a technological product of an agricultural machine comprising a housing, a cover, a rotor blade with a disk and a rotor drive element, characterized in that, in order to increase the reliability of the machine by reducing the vibration of the fan, the rotor blades are made in the form of two plates connected to each other on the hub, working and rear, diverging to the periphery from the line connecting the point of contact of the hub with the disk and the extreme point of the circuit connecting the plates to each other, while A gap was made between the length of the rear plate between the latter and the disk.