RU2000855C1 - Grain-cleaning machine pneumatic system - Google Patents

Abstract

Usage: in agricultural machinery, in particular in machines for cleaning and sorting grain. The air separation channels (PC) of the steam and secondary treatment are in communication with the sedimentation chambers. Air is supplied by a diametrical fan with a discharge channel. The device includes an exhaust air Canada device for introducing the grain mixture and outputting fractions mrp nmhmm pgh / pmppr IFR of the air velocity in the PC. The rotary section of the L-shaped louvered air cleaner is made with solid walls. A dust separator chamber is located under it along the secondary cleaning PC. In this case, the initial horizontal section of the L-shaped channel is located in the discharge channel of the fan 1 silt.

Description

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

A known pneumatic system of a grain cleaning machine, comprising a diameter fan with a discharge nozzle mounted above sedimentary chambers, two pneumo-separating channels, a device for introducing a grain mixture, a device for outputting light fractions 1. Pneumo-separating channels of the system work in parallel, the air stream enters them from the atmosphere under the vacuum generated by the fan. After preliminary purification in the sedimentation chambers, the exhaust air is removed from the pneumatic system through the blower pipe of the fan through the air supply channel to the device for cleaning dust from the air. Inertia type air purifiers are most often used for this purpose: louvre, cyclone and rotary 2. Cyclone and rotary air purifiers better clean the air, but have high resistance and high energy consumption. The main disadvantage of louvered air cleaners is their large length and, as a result, their large overall dimensions.

The closest to the invention in technical essence and the achieved result is a pneumatic separating device of a grain cleaning machine, including two pneumatic separating channels, two sedimentary chambers, a diametrical fan with a discharge channel mounted above the sedimentary chambers and connected to the air supply channels, the air supply channel, Г- shaped louvered air cleaner, the initial section of which is made rotary and installed in the discharge chamber, on the fan side, and the final part is located parallel to the secondary air separation separating channel, with a dust separating chamber installed underneath it, and devices for introducing the grain mixture and removing its fractions, air velocity control mechanisms in the air separation channels 3. PN6VI§-separation channels in this device work in parallel, processing the grain§ - voy mixture before and after sieves.

The main disadvantage of the prototype .§, is the large length of the air inlet cleaner and, as a result, the large dimensions of the pneumatic system in height.

The purpose of the invention is to reduce the size of the pneumatic system while maintaining the quality of air purification.

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

The pneumatic system contains two pneumatic separating channels 1 and 2 of the primary and

0 secondary treatment, two sedimentation chambers 3 and 4, diametrical fan 5 with discharge channel 6, air outlet channel 7, devices 8 and 9 for introducing the grain mixture into channels 1 and 2, devices 10 and 11

5 output of refined grains, output devices 12,13 and 14 of light fractions, air velocity control mechanisms 15 and 16, louvre air purifier 17 with a dust precipitation chamber installed underneath

0 18. The louvered air purifier 17 includes an initial 19 and an end 20 sections that are connected by a rotary section 21. The initial section 19 of the air cleaner 17 is installed in the discharge pipe 5 of the fan 5. The final section 20 is located along the air separation channel 2 of the secondary cleaning and can have in common with the last wall.

0 Devices 8 and 9 of the input of the grain mixture can be made in the form of pitched boards, corrugated rollers, vibration blocks, etc. The device 10 and 11 output of cleaned grain is made in the form of an open channel. US5 triad 12, 13 and 14 output light fractions made airtight in the form of screws with valves and locks. The mechanisms 15 and 16 for adjusting the air velocity can be made in the form of throttle

0 shutters of various designs.

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

The grain mixture is fed by a feed device 8 into the air separation channel 1.

5 The air flow from the atmosphere under the influence of the vacuum created by §.ntil tor and. he wonders how ih removes from the s, ern, 6ВРЫ mixtures and sedimentary chamber 3 light impurities that precipitate in it and

0, device 12 leads out to the outside (output I).

Purified from the main body of the lungs

impurities grain enters through the device

10 to the sieve mill 22, processed on

mute and power devices 9 is introduced into

U pneumatic separating channel 2, where it is finally cleaned of §§t all light impurities and loose grain and the device 11 99 displays the limits of the machine. The separated impurities are poured together with air into the sedimentation chamber 4, precipitated therein and

the device 13 leads out to the outside (output II). The exhaust air with dust from the fan 5 is sucked from both sedimentation chambers 3 and 4 and is supplied to the discharge pipe 6. in which the initial section 19 of the louvered air cleaner 17 is located. Part of the air is cleaned of dust and through the louvers enters the air exhaust channel 7. The remaining with the part of the air with dust it enters again into the final section 20 of the air purifier 17. where further air purification takes place. The cleaned air enters through the louvres into the exhaust duct 7, and the remaining part of the air with a high concentration of dust enters the dust collector.

PNEUMATIC SYSTEM OF A GRAIN-CLEANING MACHINE, including pneumatic separating channels for primary and secondary cleaning, sedimentary chambers, a diametrical fan with a discharge channel in communication with pneumatic separating channels, an air exhaust channel, devices for introducing the grain mixture and outputting its fractions, L-shaped with an initial, rotary and rotary and plots, louver air cleaner with dust extraction -

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0

5

0

5

the chamber 18, where dust is deposited, and the cleaned air is directed into the channel 7. The dust from the chamber 18 is removed by the device 14 to the outside (outlet IV).

The air velocity in the pneumatic separating channels 1 and 2. is necessary for high-quality grain cleaning; it is established using mechanisms 15 and 16.

(5611, USSR Author's Certificate No. 1512687. class B 07 B 4/02. 1989.

2. Stepanov G.Yu., Zitser G.M. Inertial air purifiers. M .: Mechanical Engineering, 1986, p. 184.

3. The author's certificate of the USSR No. 1488030. cl. 07/07/07. 1989.

a secondary chamber underneath it located parallel to the air separation channel for the second time. 1-.- .. h furnace vertical section, characterized in that, in order to reduce the dimensions while maintaining the quality of air purification, the initial horizontal section of the louvered air purifier is located in the discharge channel of the fan, and the rotary section of the air purifier is made with solid walls.

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