Patent RU-2656443-C1 (RU)
Inventor: Kochetov Oleg Savelevich
IPC: B04C1/00
Filed: 2017-12-05
Granted: 2018-06-05
Abstract: FIELD: manufacturing technology. 
     SUBSTANCE: invention relates to a dust collection technique. In the installation of an acoustic dust-collecting system with a cassette filter consisting of a pre-filter and a thin filter, interconnected by an air duct so that the output of the pre-filter is connected to the input of a thin filter. Preliminary filter contains a body consisting of a cylindrical and conical parts, located in its upper part the peripheral input of the gas flow and the axial outlet branch of the purified gas, acoustic column with the generator of sound oscillations located in the upper part. Acoustic column in its lower part is connected by a bypass tap with a peripheral input of the gas flow. Oscillation generator is connected to the control unit. Thin filter is in the form of a dust collecting apparatus with a cassette filter comprising a housing, a peripheral gas inlet, a filter element and a dust collecting bin. Peripheral gas flow inlet is positioned in central device part and made in the form of inlet branch connected at right angle to cyclone element case with two coaxial branches, on one of which a filter element is mounted, which is made in the form of a cassette filter of a pleated corrugated pleated paper placed in a wire frame, and on the other – a dust collector, made in the form of a dust bag. Cassette filter contains a regeneration mechanism made in the form of rigidly fixed on the coaxial with the filter shaft at least two plates, the shaft being driven by a drive from the drive fixed to the upper part of the wire frame of the filter and consisting of an electric motor and a reduction gear. Plates enter the hollows of the corrugation by no more than 25 % of the height of the corrugation, and the cyclone element is made in the form of a hull type with a fan fixed to it, the axis of which is parallel to the axis of the branches, and the inlet branch is fixed coaxially to the fan axis. Between the roughing filters and the fine filter in the duct is an explosion-proof system consisting of a temperature sensor in the outlet duct, in the dust collector there is an emergency dust level sensor; in the output box there is a thermal automatic sensor-detector, the outputs of which are connected to a common microprocessor located in the control cabinet. In the outlet box there is a collector with injectors for connection to the fire extinguishing system, the control unit of which is connected to a common microprocessor, and the bag filter regeneration system comprises a control unit that is electronically coupled to a common microprocessor. Vortex nozzle of the fire and explosion safety system contains a body and a coaxially disposed and rigidly connected to it in the upper part of the choke with an inlet cylindrical bore connected to a diffuser, which is axially symmetric in the housing, on which a perforated disk is disposed. In the lower part of the shell, there is an axially symmetric body of the nozzle with at least three projections centering it in the axial cylindrical chamber, the nozzle is provided with a central hole on whose inner surface a screw thread is made. Between the perforated disk and the nozzle there is a hollow helical cone swirler with a screw thread, while the nozzle is pressed against the nozzle body by a threaded washer with a central confuser. 
     EFFECT: invention makes it possible to improve the efficiency of dust collection. 
     1 cl, 5 dwg