SU1703182A1 - Vortex dust collector - Google Patents

Abstract

This invention relates to a technique for cleaning dust from gases and may be; used in the chemical, gas, food, microbiological, medical industry and other sectors of the national household. The purpose of the invention is to increase the efficiency of dust collection. To achieve: the goal, the device is equipped with a rotor, made in the form of a rotating body with a helicoidal blade. : The rotor is located coaxially with the chamber and is attached to the narrowed end of the bushing, while the winding direction of the blade coincides with the direction of rotation of the primary and secondary flows. The rotor is driven by a rotational drive .2 §

Description

The invention relates to a technique for cleaning gas from dust and can be used in the chemical, gas, food, microbiological and medical industries and other sectors of the national economy.

The purpose of the invention is to increase the efficiency of dust collection due to the impact on the velocity field of the rising flow.

On fng.1 depicts a vortex dust collector, a general view; in Fig.2 a section on fkg.1.

The dust collector consists of a circular vortex chamber 1, a dust collector 2, an axial nozzle 3 for introducing a dusty gas with a swirler 4, a fairing 5 and a fender gsanboy 6. In the. In the lower part of the chamber 1 there is an axial nozzle 7 for the outlet of the cleaned

gas and an outlet chamber 8 with a side pipe 9. In the annular space, between the pipe 7 and the camera 1, a peripheral water intake head of the secondary stream 10 supplied to this space through the pipe 11 is installed.

A rotor 12 is arranged along the axis of the dust collector. It is made in the form of a rotational body with a helicoidal blade 13 supported by its narrowed part on the fairing 5, in the upper part of which a corresponding support device 14 is secured to provide a movable joint: between the rotor 12 and fairing 5. In the upper part part of the dust collector on the lid 15 is mounted a device 16 for rotating the rotor into the water.

Dust collector works as follows.

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The dust-laden gas enters through the inlet 3 and twists by the snood 4, the fairing of which contributes to the formation of a vortex and pushing it towards the peripheral part of the chamber. Under the action of centrifugal forces, the dust particles move to the walls of chamber 1, where they enter the zone of action of the secondary rotating flow supplied to the apparatus through the input of the secondary closed flow 10. The rotating secondary flow moves down along with the dust collected and moving along the chamber wall. At the baffle plate 6, it is combined with the primary flow and moves upwards in the central part of the dust collector. At the same time, small particles that did not have time. caught from the primary stream, drift with the combined flow to the axis of the apparatus. So, meeting with the helicoidal blade 13 of the rotor 12, these nastices receive a preferential direction of downward movement along the helical ones. guides and rotor walls. : Achieve flap 5 and enter the primary gas flow coming out of the swirler 4 fine particle flow .... spinning again. The concentration of small particles in the circulation loop 17 gradually increases to form their condensation clouds, which already exist in the gas, as a single unit (i.e., the particles are coarsened) and are easier to separate from the gas and dust flow. Successful : the flow of these processes contributes to the drive of the displacer in rotation.

When the rotation of the rotor 12 in the direction. Conversely to the direction of rotation of the flow of gas to be purified in the apparatus, the propeller blade moves in the direction of the circulating flow.

Due to this, the process of deposition of particles onto the surface of the blade is accelerated and the speed of their movement down along this surface increases while the speed of the downward moving gas circulating gas increases.

flow. Thus, an ever greater part of the gas flow from the central zone of the apparatus, where the concentration of particles of fine fractions of dust is greatest, is carried along a circular motion, which returns fine particles again to the zone of exit of the primary stream from the swirler to the zone of effective separation.

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   4 .- .. The effect of conclakeracine small parts can be enhanced by supplying steam, for example, to zone 17 of the circulation: or provide supporting device 14: with an annular ultrasonic radiator with radiation from the axis to: the periphery of the apparatus and / or from bottom to top through circulation zone 17; Increasing the degree of trapping of fine particles can be achieved by supplying irrigation fluid to the screw trap. pastes 13 displacer 12, and the supply of liquid can be carried out as from the outside of the displacer, i.e. when installing, for example, nozzles in the housing of the apparatus and the direction of feeds along the radius of the apparatus, and from the inside of the displacer, for which corresponding holes must be made in it.

The blade 13 of the rotor 12 can be extended to the lid of the dust collector 15, which will contribute to the unwinding of the outgoing gas flow.

 But compared with the vortex dust collector 4-body without a rotor, the proposed dust collector increases the efficiency of trapping particles 4-5 µm in size from 80 to 95% (on average), for example, medical talcum, perlite filtration. and others, while the known device with a gas-permeable rotor, respectively, from 88.5 to

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F o rm u l a and s gain

A vortex separator containing a cylindrical chamber, placed in its lower part of a dust extraction and axial injection of dusty gas with a baffle plate, located in the upper part of the chamber a peripheral inlet of the secondary flow and an axial nozzle for output. purified gas, mounted along the axis of the chamber, a rotor in the form of a rotational body narrowing to the lower axial j inlet, equipped with a rotational drive, characterized in that, in order to increase the efficiency of dust collection due to the rotational flow on the velocity field, the rotor is equipped with a helicoidal lobe. - with a stiffener attached to its gas-tight surface, having a winding direction that coincides with the direction of gas rotation. . - -

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Claims (1)

Claim A vortex dust collector containing a cylindrical chamber, placed; in its lower part, a dust-collecting and axial inlet of dusty gas with a bump washer, peripheral inlet of the secondary stream and an axial nozzle for withdrawing purified gas mounted along the chamber axis, the rotor in the form body rotation, tapering to the lower axial; an input equipped with a rotation drive, characterized in that, in order to increase the efficiency of dust collection due to the impact on the field of speeds of the rotating stream, the rotor is equipped with likoidalnoy lopa-. • mounted on its gas-tight surface, with a winding • direction coinciding with the direction of gas rotation. . · <· FIG. 1 s '' Compiled by P. Kekishev