TWO-STEP DUST COLLECTOR SYSTEM WITH VORTEX DUST COLLECTOR

摘要

FIELD: cleaning systems.;SUBSTANCE: invention relates to technique of cleaning gas from dust and can be used in various industries in pneumatic transport, air cleaning, aspiration. Two-stage dust collection system contains a vortex dust collector designed as a dust collection system for pre-cleaning the dusty gas stream. Vortex dust collector comprises a body, an axial inlet of a dusty gas with a swirler and an ejection head, a fairing and a baffle plate, and also located in the upper part of the housing an axial nozzle for outputting the purified gas and peripheral input of the secondary flow with a swirler. Housing is cylindrical, and the bump washer is disc-shaped, with the ejection nozzle forming with the input wall an annular channel formed by cylindrical or conical surfaces, respectively, of the axial input and the ejection nozzle, the cut-off plane of the ejection nozzle is located above or below the cut-off plane of the disc washer. According to an alternative embodiment, in the upper part of the housing there is an axial nozzle for outputting the purified gas and peripheral input of the secondary flow with a swirler, the housing is cylindrical, and the bump washer is made conical, and the ejection nozzle with the wall of the input forms an annular channel formed by conical surfaces, respectively, the axial entry and the ejection nozzle, and the cut-off plane of the ejection nozzle is located below the cut-off plane of the conical breaker plate. According to another alternative variant, the peripheral input of the secondary flow is made with a swirler, the housing is cylindrical, and the fender washer is made flat, wherein, ejection nozzle forms, with the input wall, an annular channel formed by the conical surfaces of the axial insertion and the ejection nozzle, respectively, and the cut-off plane of the ejection nozzle is located below the cut-off plane of the flat breaker plate. Dust-collecting system for fine cleaning of the dusty gas stream is made with an integrated fire and explosion safety system, comprising a frame structure case with barriers, a support part with a dust collecting bin and a dust collecting cart mounted on the base, as well as an inlet and outlet box of the filter section of the dust collector with bag-type filters, respectively, with inlet and outlet connections. In the input box of the dust collection device a manifold is installed with nozzles of the fire and explosion safety system with a control unit, associated electronic communication with a common microprocessor, a regeneration system of bag filters with a pulse blowing mechanism, which is equipped with a control unit of each solenoid valve of the purge nozzles and is connected to a common regeneration control unit connected by electronic communication with a common microprocessor. Temperature sensor is installed in the input box of the filter section, an emergency dust level sensor is installed in the dust collection bin, and in the output box of the filter section there is a thermal automatic sensor-detector, the outputs of which are connected to a common microprocessor located in the control cabinet. Each of the nozzles of the fire and explosion safety system includes a housing with a turbulence chamber and a nozzle, the housing is designed as an inlet fitting with a central hole and rigidly connected to it and coaxial cylindrical sleeve with internal thread and expansion chamber, coaxial to the housing, coaxially the housing in its lower part is connected to the sleeve through a thread nozzle, made in the form of an inverted glass, in the bottom of which is made a turbulent swirl fluid flow with, at least two inlets in the form of cylindrical holes, inclined to the nozzle axis, located in the nozzle end surface, where the central cylindrical orifice is also made, connected with a mixing chamber of the nozzle, communicated in series with diffuser outlet chamber. In the diffuser outlet chamber divider is installed, made in the form of at least three spokes, each of which is fixed with one end on the outer surface of the diffuser outlet chamber, perpendicular to the surfaces forming it, and others in the surface of the body of rotation, for example a ball whose axis coincides with the axis of the diffuser outlet chamber, and the body of rotation itself is located in lower part behind outlet diffuser chamber section. 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. Divider can be made in the form of two spokes, each of which is fixed with one end to the outer surface of the diffuser outlet chamber, perpendicular to the surfaces that form it, and others on the axis, on which a rotational body is installed, made in the form of a ball, the center of which lies on the axis of the diffuser outlet chamber, while the surface of the rotational body, made in the form of a ball, mounted on an axis with the possibility of rotation, made perforated, and to the surface of the body of rotation, made in the form of a ball, mounted on an axis with the possibility of rotation, the elements are installed that carry out its rotation, for example, in the form of segments of helical blades. 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 fluid flow, and in the body of rotation of the nozzle, the axis of which coincides with the axis of the diffuser outlet chamber, and the body of rotation itself is located in the lower part behind the cut of the diffuser outlet chamber, resonant grooves are shaped in the form of a cylindrical surface of different diameter and length, 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 an increase in the efficiency of separation of particles with a low specific weight, a decrease in the hydraulic resistance and an increase in the reliability of the system.;1 cl, 7 dwg