RU2229658C2 - Gas cleaning device - Google Patents

Abstract

FIELD: air conditioning+ADs- air treatment in industrial locations for cleaning it of solid particles and organizing closed-cycle ventilation. SUBSTANCE: device has case with inlet and outlet pipes and ports for discharging separated particles, as well as multiple-disk rotor. Curvilinear inlet pipe of device and its outlet pipe are disposed so that they occupy sector of minimum 90 deg. on device case. Disk rotor is mounted in additional shell that forms, together with case, passage for discharging gas and separated particles through ports made in additional shell and arranged in tandem from inlet pipe to outlet one, port size being sequentially enlarged. EFFECT: enhanced capacity of device+ADs- improved quality of air cleaned from solid particles by dry method. 1 cl, 2 dwg

Description

A gas purification device relates to air conditioning and can be used in air treatment devices in industrial premises for cleaning particulate matter and organizing closed-loop ventilation.

A device for draining air is known, comprising a housing with tangentially located inlet and outlet nozzles, a window for removing extracted moisture, and a rotor with discs mounted on a cooled shaft [1]. Under the action of low temperature, moisture condenses on the surface of the disks, which, under the action of centrifugal force, is supplied to the shell of the casing and then to the output window of the separated moisture.

The disadvantage of this device is the low efficiency of air purification from particulate matter.

Also known is a device for draining and purifying air selected for the prototype. The device comprises a housing with tangentially located inlet and outlet nozzles and a shaft located in the housing with separation discs. The case in the lower part has a longitudinal slit window for removal of the selected moisture particles (condensate) [2].

The disadvantage of the prototype is the low efficiency of separation of solid particles.

The objective of the proposed technical solution is to increase the productivity of the device and the quality of air purification from particulate matter in a dry way.

The problem is solved due to the fact that the device for gas purification comprises a housing with inlet and outlet nozzles and windows for removal of the separated particles, and a multi-disc rotor. In this case, the inlet pipe of the device is made curved and located so that together with the output pipe they occupy a sector on the device body less than 90 °. The disk rotor is placed in an additional shell, forming a channel with the housing for the removal of gas and particles through the windows made in the additional shell and placed sequentially, starting from the inlet to the outlet, and the size of the windows increases gradually, and the ratio of large and small diameters of the rotor disks and the number of its revolutions is associated with the parameters of the separated particles by a ratio satisfying the condition

0.001 · π r ² ρωD ₁ / μ> D ₁ -D ₂ <0.1 · π r ² ρωD ₁ / μ,

where D ₁ and D ₂ - large and small diameters of the disks, m;

r is the particle radius, m;

ρ is the density of the particle material, kg / m ³ ;

ω is the angular frequency of rotation of the rotor, rad / s;

μ is the viscosity of air, Pa · s.

The drawings show: figure 1 - General view of the installation; figure 2 is a section along aa.

A device for air purification comprises a housing 1 with input 2 and output 3 nozzles and a rotor located in the housing with separation discs 5 mounted on the hollow shaft 4. The input nozzle 2 is curved. The particle discharge channel 6 is formed by a housing and an additional shell and is equipped with windows 7 for outputting particles and a hopper for collecting particles 8. The windows are placed sequentially on the surface of the additional shell, starting from the inlet to the outlet air pipe.

The principle of the apparatus is based on the use of centrifugal acceleration, which affects the flow and the particles contained in it. Contaminated air or any other gas from the cleaned room enters through the inlet pipe 2 into the interdisc space of the rotor. When the rotor rotates between the disks under the action of friction forces, gas and solid particles are involved in a circular motion. Under the action of centrifugal acceleration, the particles move to the shell of the case and slide along it to the windows 7. Through these windows, the separated particles with a small amount of gas enter the channel 6 and then the particle collection hopper 8. The purified gas through the outlet pipe 3 and a pipe connected to it (not shown) goes back into the room. Thus, a multi-disk rotary apparatus allows efficient air purification and ventilation in a closed cycle without air emission into the atmosphere.

Sources of information

1. RF patent No. 2167369, F 24 F 3/14, 1999

2. RF patent No. 1679142, F 24 F 3/14, 1986 - prototype.

Claims (1)

A gas purification device comprising a housing with an inlet and outlet nozzles and windows for discharging the separated particles and a multi-disc rotor, characterized in that the inlet nozzle of the device is made curved and located so that together with the outlet nozzle they occupy a sector on the device body less than 90 °, while the disk rotor is placed in an additional shell, forming a channel with the housing for the removal of gas and separated particles through windows made in the additional shell and placed in series, starting from the input tube to an outlet, wherein the size of the windows increases successively, and the ratio of large and small diameter of the rotor discs and the number of its rotations related to the parameters of the particles separated by the relation satisfying the condition 0.01 · π r ² ρωD ₁ / μ <D ₁ -D ₂ <0.1 · π r ² ρωD ₁ / μ, where D ₁ and D ₂ - large and small diameters of the disks, m; r is the particle radius, m; ρ is the density of the particle material, kg / m ³ ; ω is the angular frequency of rotation of the rotor, rad / s; μ is the viscosity of air, Pa · s.

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