RU1799641C - Pneumatic system of grain-cleaning machine - Google Patents

Abstract

Usage: in mechanical engineering and can be used in agricultural production, as well as in the flour and grain elevator and animal feed industry for cleaning and sorting grain. SUBSTANCE: pneumatic system consists of parallel working pneumatic separating channels (PC) 1 and 2, sedimentary chambers 3 and 4, separated by a wall 5, a diametrical fan (ДВ) 6 with a discharge pipe (NP) 7 installed above them, grain input devices a mixture of 8 and 9 and the output of its fractions 10-13, mechanisms 17 and 18 for regulating air velocity in

Description

PC 1 and 2, air inlet 15 and air outlet 14 channels. NP 7 DV 6 is connected, with the air outlet K 14 of the pneumatic system and with the air inlet K 15, in

a jalousie grid 16 is installed at the junction. As a result of the operation of this device, the quality of grain cleaning is improved. 1 ill.

The invention relates to agricultural machinery, in particular to machines for cleaning and sorting grain, and can be used in the milling, elevator and animal feed industry.

The purpose of the invention is to improve the quality of grain cleaning.

The drawing shows a diagram of the pneumatic system of a grain cleaning machine,

The pneumatic system contains two pneumatic separation channels 1 and 2 of primary and secondary cleaning, two sedimentation chambers 3 and 4, separated by a wall 5, a diametrical fan 6 with a discharge pipe 7, mounted above the sedimentation chambers 3 and 4, devices 8 and 9 for entering grain mixtures into channels 1 and 2, the device for outputting refined grains 10 and 11 and the output of light fractions 12 and 13. The discharge pipe 7 of the fan 6 is connected to the air exhaust channel 14 of the pneumatic system and to the air supply channel 15 of the primary cleaning, which is connected to the pneumatic second end the separating channel 1. At the junction of the discharge pipe 7 with the air supply channel 15, a louvre grill is installed 16. The pneumatic separating channels 1 and 2 are equipped with mechanisms 17 and 18 for adjusting the air velocity, which can be made, for example, in the form of butterfly valves of various designs. Grain mixture inlet devices 8 and 9 are feed rollers for top or bottom feed, or pitched boards mounted at an angle of 30-45 ° to the horizontal. Devices 12 and 13 output light fractions can be made in the form of disks, sluice gates or valve systems, providing for the removal of impurities without suction of air from the atmosphere. The device 10 for the output of refined grain from the channel 1 can be airtight (valve system, airlock, auger, etc.), and it can also be a device 11 in the form of an open channel.

The pneumatic system of the grain cleaning machine operates as follows.

The grain mixture is fed by a feeding device 9 into the pneumatic separating channel 1.

Airflow from discharge pat. cabin 7 through the louvre grille 16 through the air supply channel 15 enters the pneumatic separation channel 1 and carries out

grain mixture into the sedimentation chamber 3 light impurities that are deposited in it and the device 12 are discharged to the outside (exit II). Grain purified from the main part of light impurities (output I) enters the

a stitch mill (not shown) is processed on it and introduced into the pneumatic separation channel 2 by a feeding device 9. The air coming from the atmosphere into this channel removes the remaining lungs from the grain mixture

impurities and carries them into the sedimentation chamber 4. The impurities are deposited in the chamber 4 and the device 13 is led out (outlet III). The exhaust air is drawn in by the fan 6 from both sedimentation chambers 3 and

4 and is supplied to the discharge pipe 7. From the discharge pipe 7, part of the air, as noted above, enters the channel 1, and the rest is supplied to the dust collecting device (not shown).

The grain, cleaned a second time in the pneumatic separating channel 2, by the device 11 is discharged outside the pneumatic system (output IV) and is used as intended. The optimum air velocities in the pneumatic separation channels are established by means of air velocity control mechanisms 17 and 18.

The estimated annual economic effect in the operation of one proposed pneumatic system of a grain cleaning machine is 1,456 rubles.

Claims (1)

SUMMARY OF THE INVENTION Pneumatic cleaning system machines, including pneumatic separating channels for primary and secondary cleaning, sedimentary chambers separated by a wall, a diametrical fan with a discharge pipe connected to an air supplying channel for primary cleaning, devices for introducing the grain mixture and withdrawing fractions, mechanisms for controlling the air velocity in the pneumatically separating channels, the air outlet channel, and the fact that, in order to improve the quality of grain cleaning, it is equipped with 51799641 b louvre grille, with pneumatic-discharge channel, and louvre grille secondary cleaning channel is located at the junction with the atmosphere, the discharge pipe with the air supply the fan nozzle is connected by the primary cleaning air duct.