RU2377048C1 - Inertial dust separator - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to devices separating impurities from airflow and can be used in grain cleaners to remove light impurities and dust. Proposed dust separator comprises inlet branch pipe, louver-type counter-current cleaner, dust chamber, crosswise air discharge channel arranged above said chamber, dust discharge device and additional louver-type counter-current cleaner. Louver-type counter-current cleaners are connected in parallel to inlet branch pipe via air feed channels. Note here that crosswise air discharge channel is arranged between air feed channels of louver-type counter-current cleaners.

EFFECT: reduced height.

1 dwg

Description

The invention relates to a device for separating impurities from the air stream and can be used in grain cleaning machines for cleaning exhaust air from light impurities and dust.

A known inertial dust collector, including an inlet pipe, two inertia louvre separators in series, a dust collection chamber, a transverse air outlet channel located above it, a dust extraction device (copyright certificate of the Russian Federation No. 430870 M. class B01D 45/04. Device for separating impurities from the air stream / Oleinikov V.D., Tumakaev E.K., Venkov S.A., Revenko N.A., Stepanov E.A. (RU) - Claimed 02.19.73. Publ. BI No. 21, 05.06.74). The presence of a transverse air exhaust channel provides convenient connection of the dust collector to the exhaust air removal system. However, the series connection of inertial louvre separators increases its hydraulic resistance.

Closest to the claimed technical solution according to the technical essence and the set of essential features is an inertial dust collector of a closed-open pneumatic system of a grain cleaning machine, including an inlet pipe, a louvre-countercurrent cleaner, a dust collecting chamber located above it a transverse air exhaust channel, dust extraction device (RF patent No. 2303494 , MPK V07V 4/02, A01F 12/44. Closed-open pneumatic system of a grain cleaning machine / Burkov AI, Roshchin OP, Konyshev NL (RU) - Claimed March 13, 2006. publ. BI №21, 27.07.2007). The transverse air duct of the dust collector has outlet pipes with a plug at both ends, which expands the mounting (layout) capabilities of the pneumatic system of the grain cleaning machine, and the presence of a louvered countercurrent cleaner reduces the hydraulic resistance of the dust collector.

The disadvantage of this inertial dust collector is the large length of the louvre separator, which leads to an increase in its overall dimensions in height.

The objective of the invention is to reduce the dimensions of the inertial dust collector in height.

The problem is solved by using an inertial dust collector, including an inlet pipe, a louvre countercurrent cleaner, a dust collecting chamber, a transverse air exhaust channel located above it, a dust extraction device, the dust collector being equipped with two louvered countercurrent cleaners connected in parallel to the inlet pipe through the air supply channels and a dust camera, while the transverse air outlet channel is located between the air supply channels of the louvre-countercurrent ny cleaners.

The drawing shows a diagram of an inertial dust collector.

The inertial dust collector contains an inlet pipe 1, two louvered countercurrent cleaners 2 and 3 with air supply channels 4 and 5, a dust chamber 6, a transverse air exhaust channel 7 located above it, a dust outlet 8. Each louvered countercurrent cleaner consists of a louver 9 and a counterflow 10 separators. The transverse air exhaust channel 7 has an input slit 11 along its entire length and is located between the air supply channels 4 and 5, which are connected in parallel with the inlet pipe 1. The output windows 12 of the louvre separators are connected to the dust chamber 6, and its output windows 13 are connected to the input slot 11 transverse air outlet channel 7. The output windows 12 and 13 together form a countercurrent separator 10. The transverse air outlet channel 7 may have one or two inlet pipes (not shown).

Inertial dust collector operates as follows. The air stream removed from the pneumatic system of the grain cleaning machine, containing light impurities and dust (hereinafter referred to as dust), enters the inlet pipe 1 of the inertial dust collector and moves in two parallel streams through the air supply channels 4 and 5 to the louvered countercurrent cleaners 2 and 3. As you move in the louvre separators 9, the cleaned air passes between the plates of the louvre grille, and the dust particles under the action of inertia forces tend to maintain the original direction of motion and their bulk along with spirit (10-20%) is sent to the output window 12 louver separator. In the counterflow separator 10, the air stream with dust is rotated 180 °. Dust particles due to inertia continue to move downward and the main part is deposited in the dust chamber 6, and then the device 8 is brought out. The purified air through the outlet window 13 of the dust collecting chamber 6 rushes with the air passing through the louvre grill into the inlet slot 11 of the transverse air exhaust channel 7 and is removed from the dust collector.

Reducing the overall dimensions of the dust collector in height is achieved by halving the length of the louvered surface, shifting down the inlet pipe by half its height as a result of dividing the louvered surface into two parts and placing them on both sides of the transverse air exhaust channel. In addition, the movement of air flows in the dust chamber, leaving the exit windows 12 of the louvre separators, is a turbulent jet, beating to a standstill. In this case, the horizontal components of the air velocity are directed towards each other, which helps to reduce their turbulence and improve the conditions of dust deposition in the dust chamber 6. As a result, with the same effect of dust deposition, the height of the dust chamber 6 will also decrease.

Claims (1)

An inertial dust collector including an inlet pipe, a louvre countercurrent cleaner, a dust settling chamber, a transverse air exhaust channel located above it, a dust extraction device, characterized in that it is equipped with an additional louvered countercurrent cleaner, while the louvered countercurrent cleaners are connected in parallel with the inlet pipe through air supply channels, wherein a transverse air discharge channel is located between the air supply channels of the louvered countercurrent cleaners.

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