DUST COLLECTING DEVICE Russian patent published in 2018 - IPC B01D46/00 

FIELD: dust collection equipment.

SUBSTANCE: invention relates to dust collection equipment and can be used in chemical textile, food, light and other industries for the purification of dusty gases intended for central aspiration systems. Dust-collecting device comprises a body, a support part with a dust collecting bin and a dust-collecting trolley or a sluice-type reloader, inlet and outlet ducts of the filter section of the dust collector with bag filters, a filter regeneration mechanism, a gas distribution device is installed in the inlet box of the filter section, made in the form of a folding plate with a mechanism for changing its width, and a control unit. Folding plate consists of two leaves, closely adjacent to each other in such a way that they form a plate that functions as an inertial dust separating element. In the casing of the filter section there is a temperature sensor, in the dust bin there is an emergency dust level sensor, in the outlet box of the filter section – a thermal automatic sensor-detector, the outputs of which are connected to a common microprocessor located in the control cabinet. In the output box of the filter section, a collector with injectors for the fire and explosion safety system of the device with a control unit connected electronically to a common microprocessor, and a bag filter regeneration system with a pulse blow-off mechanism, which is provided with a control unit for each solenoid valve of the nozzles and is connected to a common regeneration control unit connected electronically to a common microprocessor, are installed. Dust collecting bin is conical or pyramidal in shape with an angle of inclination of the walls that exceeds the angle of the natural slope of the trapped dust. Each of the injectors of the fire and explosion safety system of the device includes a case with a swirl chamber and a nozzle, said case is composed of feed union with central bore and cylindrical sleeve with inner thread jointed and aligned therewith and expansion surface aligned with case. At the same time, a nozzle is connected to the shell at its lower part through a thread. This nozzle is made in the form of an inverted cup, in the bottom of which there is a turbulent swirler of the liquid flow with at least two inclusions to the axis of the nozzle in the form of cylindrical openings, which are located in the end surface of the nozzle, where also a central cylindrical throttle opening is made connected to the nozzle mixing chamber, in series connected to the diffuser outlet chamber. Divider is installed in the diffuser outlet chamber in the form of at least three spokes, each of which is fixed at one end to the outer surface of the diffuser outlet chamber, perpendicular to the surface forming it, and the other is in the surface of the body of rotation, for example a ball which axis coincides with the axis of the diffuser outlet chamber, and the body of rotation itself is located in the lower part behind a cutoff of the diffuser outlet chamber. Diffuser is attached to the end surface of a cylindrical sleeve coaxial with the body, coaxial to the diffuser chamber. Cutoff surface of the diffuser lies in a plane below the surface of the divider’s body of rotation. Or the divider is made in the form of two spokes, each of which is fixed at one end to the outer surface of the diffuser outlet chamber, perpendicular to the surface forming it, and the other on an axis on which a rotational body is arranged with possibility of rotation in the form of a ball centered on the axis of the diffuser outlet chamber, wherein the surface of the rotational body made in the form of a ball mounted on an axis with possibility of rotation is perforated, and to the surface of the body of rotation, made in the form of a ball, mounted on the axis with the ability to rotate, elements are installed, making it rotate, for example, in the form of segments of screw blades. At the same time, on the inner surface of the central cylindrical throttle opening of the vortex nozzle of the spraying device located in the end surface of the nozzle, screw grooves are made for additional swirling of the liquid flow, characterized in that in the rotational body of the vortex nozzle of the spraying device, whose axis coincides with the axis of the diffuser outlet chamber, and the body of rotation itself is located in the lower part behind the cutoff of the diffuser outlet chamber, resonant recesses are made in the form of a cylindrical surface of different diameters and lengths, performing the functions of Helmholtz resonators whose dimensions are determined by the necessary pulsation frequency of the liquid flow.

EFFECT: technical result is an increase in the efficiency and reliability of the dust collection process.

1 cl, 4 dwg