RU2279321C2 - Device for the air purification - Google Patents

Abstract

FIELD: mechanical engineering; metallurgy; power industry; other industries; production of the devices for the air purification.

SUBSTANCE: the invention is intended for the air purification and may be used in mechanical engineering, metallurgy, power industry and other industries. The device contains the final fine filter, the fan and the dust-catcher. The final fine filter has the cylindrical body with the inlet tangential branch-pipe, the dust collector with the dust discharge mean, the filtering element is mounted inside the jacket with the outlet branch-pipe. The fan is rigidly fixed on the cover of the dust catcher, and its outlet branch-pipe and the inlet tangential branch-pipe of the cylindrical body of the final fine filter are rigidly linked among themselves for the short way of the passage from the fan into the body of the final fine filter of the solid impurities accumulated on the contour of the external boundary of the airflow under action of the centrifugal forces in the spiral of the fan and washing by this air flow contour of the internal wall of the cylindrical body of the final fine filter. The dust catcher has the cylindrical body with the inlet tangential branch-pipe connected with the dust collector, the cone with the relief valve, the covers with the hole and the conical nozzle located inside the cylindrical body. At that the cone of the nozzle passes through the hole in the cover of the dust catcher and enters the fan forming the fan inlet branch-pipe by the cone of the nozzle above the cover, and under the cover inside the cylindrical body of the dust catcher the nozzle forms the inertial chamber and settling chamber and the annular slit for passage of the thin layer of the polluted air flow between the external wall of the nozzle and the internal wall of the cylindrical body of the dust catcher. The device allows to separate multiply the solid impurities from the air flow and to trap them increasing the level of the air purification efficiency.

EFFECT: invention allows to multiply separate the solid impurities from the air flow and to trap them increasing the level of the air purification efficiency.

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Description

The invention relates to a device for cleaning contaminated air flow from solid impurities and can be used in various industries.

There is a dust collector with a flow generator, containing a cylindrical body with inlet and outlet tangential nozzles, a conical dust collector with an unloading valve and a nozzle located inside the body, forming an inertial, vortex, settling chamber and annular gaps for air flow passage inside the body (RF patent, 2144436, IPC 7 B 04 C 5/08, Bull. No. 2 of 01.20.2000).

The disadvantage of this device is the removal of solid impurities that are separated in the flow former.

There is a ventilation dust collection unit containing a filter element mounted on a dust collector, a fan (manufacturer of Consar OJSC, Sarov, Nizhny Novgorod Region, Work Lane, 17-A, tel .: 883 13043775).

The disadvantage of the installation is that the scope of application is limited (data from the installation passport: "Operation of the installation is not allowed in combination with grinding equipment" and further).

There is a DP type smoke exhauster in which a gas-air contaminated stream enters the coils of the exhaust fan and the dust in it is separated by centrifugal forces on its peripheral wall and, together with a small (up to 15%) amount of air (gas), is removed through a flue through a flue to a remote dust collector, where the dust is separated, and the gas flow returns to the cochlea of the smoke exhaust dust collector.

The disadvantage of a smoke exhauster is its energy intensity and low efficiency of air purification.

The aim of the invention is to increase the efficiency of air purification during multiple separation from the air stream of solid impurities and their capture.

This goal is achieved in that the device contains a fine filter, a fan and a dust collector.

The fine filter is made in the form of a cylindrical body with an inlet tangential branch pipe, a dust collector with an unloading device, a filter element mounted inside a protective casing with an outlet pipe.

The fan is rigidly fixed to the dust collector cover, and its outlet pipe and the tangential inlet pipe inlet of the cylindrical fine filter housing are rigidly interconnected for a short path of accumulated solid impurities on the outer air flow boundary circuit under the action of centrifugal forces in the fan coil and for washing the air circuit with this flow of the inner wall of the cylindrical fine filter housing.

The dust collector is made in the form of a cylindrical body with an inlet tangential nozzle connected to the dust collector, a cone with an unloading valve, a cap with a hole and a cone nozzle located inside the cylindrical dust collector, and the nozzle cone passes through an opening in the dust collector cover and enters the fan, forming a nozzle cone above the cover the inlet of the fan, and under the cover inside the cylindrical housing of the dust collector, the nozzle formed an inertial, precipitation chamber and an annular gap for stroke thin layer of contaminated air stream between the outer wall of the nozzle and the inner wall of the cylindrical housing precipitator.

Figure 1 shows a device for air purification, General view; figure 2 is a top view, section aa in a general view.

The device (figure 1) contains a fine filter (1), a fan (2), a dust collector (3) with a dust intake (4).

The fine filter (1) is made in the form of a cylindrical body (5) with an inlet tangential branch pipe (6) (Fig. 2), a dust collector (7) with an unloading device (8), a filter element (9) installed inside the protective casing (10) ) with outlet pipe (11).

The fan (2), rigidly mounted on the dust collector cover (3), has an impeller with blades (12), a scroll (13) and an outlet pipe (14) (Fig. 2), which is rigidly connected to the inlet tangential pipe (6) of a cylindrical case (5) of the fine filter (1) for a short path of passage of accumulated solid impurities on the contour of the outer boundary of the air flow under the action of centrifugal forces in the cochlea (13) of the fan (2) and for washing this contour of the air flow of the inner wall of the cylindrical body (5) fine filter (1).

The dust collector (3) is made in the form of a cylindrical body (15) with an inlet tangential branch pipe (16) connected to the dust intake (4), a cone (17) with an unloading valve (18), a cover (19) with an opening (20) and a cone nozzle (21) located inside the cylindrical housing (15) of the dust collector (3), the cone of the nozzle (21) passing through the hole (20) in the cover (19) of the dust collector (3) and enters the fan (2), forming a nozzle cone (21) ) above the cover (19) of the inlet pipe (22) of the fan (2), and under the cover (19) inside the cylindrical body (15) of the dust collector (3), the nozzle (21) is shaped alo flywheel (23), settling (24) of the chamber and an annular gap (25) for the passage of a thin contaminated air stream (26) of the nozzle between the outer wall (21) and the inner wall of the cylindrical housing (15) precipitator (3).

The device operates as follows.

The contaminated air stream enters through the intake (4), the tangential inlet pipe (16) into the inertia chamber (23) of the cylindrical body (15), is twisted in the chamber (23) around the nozzle (21), passes from top to bottom through the annular gap (25) into in the form of a thin-layer contaminated air stream (26) and is discharged into the precipitation chamber (24), washing the inner wall of the cylindrical body (15) with a contour of the outer boundary of the contaminated thin-layer stream (26). In this case, solid particles (impurities) during friction against the inner wall of the cylindrical body (15) lose speed, are separated from the flow and flow down the wall of the body (15) of the cone (17) to the discharge valve (18), and the significantly cleaned air stream from the precipitation chamber (24) through the nozzle (21), the inlet pipe (22) enters the scroll (13) of the fan (2), where due to the rotation of the impeller with blades (12), the air flow rotates in the scroll (13), and solid particles (impurities ) under the action of centrifugal forces are separated on the peripheral wall of the cochlea (13), and carried out solid impurities from the cochlea (13) in the form of air flow (27) accumulated on the outer boundary boundary circuit (27) through the outlet pipe (14) of the fan (2), and in this form the air stream (27) enters through the cylindrical inlet pipe (6) into the cylindrical the case (5) of the fine filter (1), twists in it, washing with the outline of the outer boundary of the air flow (27) with accumulated solid impurities, the inner wall of the cylindrical body (5) of the fine filter (1). In this case, solid impurities during friction against the inner wall of the cylindrical body (5) lose speed, are separated from the flow and flow down the wall of the body (5) of the dust collector (7) into the unloading device (8), and additionally purified air from the cylindrical body (5) enters into the filter element (9), it is cleaned in it, passes under the protective cover (10) and is thrown out through the outlet pipe (11).

Using the installation with a fine filter, fan and dust separator can significantly increase the degree of capture of solid impurities from the air stream.

Claims (1)

An air purification device comprising a fine filter containing a filter element, a cylindrical body with an inlet tangential branch pipe, a dust collector with a discharge device, a casing with an outlet nozzle, a dust collector comprising a cylindrical body with an inlet tangential branch and a dust intake, a cone nozzle, a cone with a discharge valve and a cover with a hole on which the fan is rigidly fixed, characterized in that the conical nozzle located inside the cylindrical housing of the dust collector passes the cone through the hole in the cap and enters the fan, forming the nozzle cone above the cap with the nozzle inlet, and under the cap inside the cylindrical body of the dust collector the nozzle forms an inertial, precipitation chamber and an annular gap for the passage of a thin layer of contaminated air flow between the outer wall of the nozzle and the inner wall of the cylindrical body dust separator, and the outlet pipe of the fan and the inlet tangential pipe of the cylindrical housing of the fine filter are rigidly connected between for a short path of air flow with accumulated solid impurities on the outer boundary circuit under the action of centrifugal forces in the cochlea fan and for washing the inner wall of the fine filter with this circuit.

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