FIELD: dust collection equipment.
SUBSTANCE: invention relates to a dust collection technique. Acoustic dust installation with a cassette filter is proposed, consisting of a roughing filter and a fine filter interconnected by a duct so that an output of the roughing filter is connected to an input of the thin filter. In this case, the roughing filter comprises a body consisting of a cylindrical and conical parts, a peripheral inlet of the gas flow and an axial outlet fitting of the purified gas located in its upper part, acoustic column with a generator of sound oscillations located in the upper part, acoustic column in its lower part is connected by a bypass tap with the peripheral inlet of the gas flow, and the generator of sound oscillations is connected to a control unit. Fine filter is in the form of a dust collecting apparatus with a cassette filter comprising a housing, a peripheral inlet of the gas flow, a filter element and a dust collecting bin, wherein the peripheral inlet of gas flow is located in the central part of the apparatus and is in the form of an inlet fitting connected at right angle to a body of a cyclone element having two coaxial fittings, on one of which the filter element is fixed , that is made in the form of a cassette filter from a filtering pleated corrugated paper placed in a wire frame and on the other-the dust collecting bin made in the form of a dust bag. Moreover, the cassette filter comprises a regeneration mechanism made in the form of rigidly fixed on the coaxial with the filter shaft at least two plates, wherein the shaft being driven from the drive fixed to the upper part of the wire frame of the filter and consisting of an electric motor and a reducer, and the plates enter the hollows of a corrugation by no more than 25 % of the height of the corrugation. Cyclone element is made in the form of a hull type with a fan mounted on it, the axis of which is parallel to the axis of the fittings, and an inlet fitting is fixed coaxially to the fan axis. Optimal parameters for sound processing are: sound pressure level is in the range of 130÷145 dB, acoustic frequency is in the range of 900÷2,000 Hz, the time of insonation is in the range of 1.5÷2.5 s, the concentration of dust in the air stream is not less than 2 g/m3. 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 is installed an emergency dust level sensor, in the output duct there is a thermal automatic sensor-detector, which outputs are connected to a common microprocessor located in a control cabinet, and in the outlet duct there is a collector with injectors for connection to the fire extinguishing system, control unit of which is connected to the common microprocessor, and a regeneration system of bag filters comprises a control unit that is electronically coupled to the common microprocessor. Vortex fitting of a fire and explosion safety system contains 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 in the form of an inverted cup is connected to the sleeve in its lower part by means of a thread, in the bottom of which there is a turbulent swirler of the liquid flow with at least two inclined to the axis of the nozzle by insertions in the form of cylindrical bores located in the end surface of the nozzle, where a central cylindrical throttle bore is also made, connected with a mixing chamber of the nozzle, communicated in series with 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 the axis on which the body of rotation is mounted with the possibility of rotation, made in the form of a ball, the center of which lies on the axis of the diffuser output chamber, surface of the body of rotation, made in the form of a ball, mounted on the axis with the 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. On the inner surface of the central cylindrical throttle bore of the vortex nozzle located in the end surface of the nozzle, the helical grooves are made for additional swirling of the liquid flow, while in the body of rotation of the vortex nozzle, which 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, their dimensions are determined by the necessary pulsation frequency of the liquid flow to increase the fineness of the sprayed flame.
EFFECT: technical result is to improve the safety of the dust collection process.
1 cl, 6 dwg
