DUST COLLECTING DEVICE Russian patent published in 2018 - IPC B04C9/00 

FIELD: separation.

SUBSTANCE: invention relates to dust collection equipment and is intended for central aspiration systems and can be used in chemical, textile, food, light and other industries for the purification of dusty gases. Dust-collecting device comprises a housing, a support part with a dust collecting bin and a dust collection carriage or a sluice load transfer device, inlet and outlet ducts of the filter section of the dust collector with bag type filters, a filter regeneration mechanism, a gas distributing device is installed in the inlet duct of the filter section, made in the form of a leaf plate with a mechanism for changing its width and a control unit, and the leaf plate consists of two leaves that are closely adjacent to each other in such a way that they form a plate that functions as an inertial dust separating element. Bag filter regeneration system is provided with a pulse blowdown 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, the hydraulic resistance of the filter section being 15-25% of the hydraulic resistance of the entire device, and the material of the bag-type filters having increased sound-absorbing properties. Body parts and guards of the device are made of structural composite or polymeric materials, for example polyethylene, capron, polyurethane, by means of casting, stamping, molding, and a layer of soft vibration damping material is applied on their surface. 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. Temperature sensor is installed in the filter section housing, in the dust collecting bin there is an emergency dust level sensor, in the outlet duct 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. In the outlet duct of the filter section there is a collector with injectors of a fire and explosion safety system with a control unit electronically connected with a common microprocessor, while the injectors of the fire and explosion safety system are made vortex. Injector of the fire and explosion safety system comprises a housing with a screw coaxially located at the bottom of the housing and a nipple located at the top of the housing with a cylindrical liquid inlet connected to the diffuser axisymmetric to the housing and the nozzle. Screw is pressed into the housing to form a conical chamber located above the screw coaxially with the diffuser and connected to it in series, the screw being made solid, and the outer surface of the screw being two serially connected surfaces, one of which is at least a single-threaded groove with a right or left threading and is located inside the housing, and the second surface is made smooth in the form of a rotational body axisymmetric to the spraying disk. Spraying disk is perpendicular to the axis of the housing and protrudes beyond the end surface of the lower part of the housing, and a line forming this surface there can be represented by both a straight line and a curve line of the n^th order, and the surface of the spraying disc protruding beyond the end face of the lower part of the housing is bent toward the lower part of the housing and has radial cuts on the peripheral portion alternating with a continuous portion of the surface of the spraying disc, the spray nozzle of the injector being displaced along the axis of the injector downward from the smooth surface of the rotation body of the screw, connected to the helical surface of the screw by a value h, depending on the viscosity of the liquid being sprayed, and connected to the screw by means of a rod disposed axisymmetrically to the screw. A diffuser is connected to the end lower part of the injector housing, enclosing the spraying disk, with at least three ejection openings in the upper part of the diffuser.

EFFECT: technical result is an increase in the efficiency and reliability of the dust collection process, as well as a decrease in the metal intensity and vibro-acoustic activity of the device as a whole.

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