Abstract: The invention relates to a dust collector for gaseous fluids and to a method for manufacturing the dust collector. The dust collector includes one or more filtering assemblies (1) that have filtering elements (2). The filtering elements (2) have a tubular extension. They are kept in contact with each other along a direction parallel to their length; the filtering elements (2) enclose, between them, flow channels (3). The method for manufacturing a filtering assembly (1) of the dust collector includes the steps of: permanently deforming a sheet of a filtering material so as to obtain a corrugated sheet (8) with a cross-section defined by repetitions of ??-shaped forms that are connected to each other; and coupling two deformed sheets, so as to keep the straight parts of the ??-shaped forms in contact and to obtain rows of filtering elements (2).

Abstract: A vertical separator for the treatment of slurry includes a screen device with a vertical axis provided with a screen, a feeding device provided with a pump to feed the slurry to a screen device, a discharge device for the liquid part of the slurry, and a discharge device for the solid particles of the slurry. The screen device houses a counter-pressing device which is designed to generate a force which partially counters the pushing action exerted by the pump upon the slurry.

Abstract: A screw conveyor to convey powdery material, in particular cement. The screw conveyor comprises: a transfer screw; and a trough containing the transfer screw; the trough being provided with an inlet section and an outlet section of the powdery material. The screw conveyor is characterized in that the screw comprises: at least a first screw portion having a first law of continuous variation of the pitches of the screw, which can be graphically represented by means of a first function having in at least one stretch a first derivative other than zero; and at least a second screw portion having a second law of continuous variation of the pitches of the screw, which can be graphically represented by a second function having in at least one stretch a first derivative other than zero. The first law of continuous variation of the pitches is different from the second law of continuous variation of the pitches.

Abstract: An apparatus for actuating a valve. The apparatus comprises: an actuator device comprising a piston contained in a cylinder; the actuator device being actuated by a pressurized fluid, in particular compressed air; an opening/closing mechanism of a valve actuated by the actuator device; and a valve device to control and check the flow of pressurized fluid from and toward the actuator device in order to open/close the valve. The valve device is fixed to a front face of the actuator device on the side of the opening/closing mechanism of the valve.

Abstract: A multi-blade dosing valve comprising the following elements: a valve body provided with a central opening; a plurality of shafts, each provided with a respective blade, which extend transversely to the central opening; the blades being able to close, at least partially, the central opening; a motor unit which causes the opening/closing of the blades; and vibrators to set in vibration the shafts and the blades. The multi-blade dosing valve comprises an independent vibrator for each shaft.

Abstract: A slide valve for a powdered material or a material with a small grain size. The valve comprises a stiff frame, which defines a discharge mouth to discharge the material, and a shutter of the discharge mouth, which is activated by respective moving organs. The valve is characterized in that it comprises a height adjusting device for a sealing element. The height adjusting device is suited to compensate the loss of sealing effect between the lower face of the sealing element and an upper surface of the shutter. The loss of sealing power is due to the wear generated by the relative friction between the lower face and the surface.

Abstract: A pressure relief valve for containers suited for the pneumatic loading of loose solid products, in particular silos. The valve comprises a valve body having a first end, which pneumatically communicates with the inside of the container, and a second end, which is associated to a flow control organ, which is subject to the action of corresponding closing membrane. The flow control organ periodically establishes a fluid communication between said valve body and a duct that communicates with the outside. The valve is characterized in that at least one portion of the duct that communicates with the outside is suited to be elastically deformed by the pressure difference existing between the inside of said container and the inside of the duct itself.

Abstract: A wastewater treatment plant. The plant comprises separating equipment for separating the solid particles from the liquid part. The separating equipment comprises, in turn, an inlet opening and an outlet opening, which are substantially arranged in line along a common directrix. In the fluid mass, there is present at least one fluid-dynamic profile, which is suited to help the detachment of the solid particles from the liquid part. The plant is characterized in that the separating equipment comprises, furthermore, a second fluid-dynamic profile. The two fluid-dynamic profiles define between one another a first preferential flow channel of the liquid mass.

Abstract: An intermediate support for a screw conveyor, which has a first shaft rotating about an axis of rotation and defined by a number of segments; and a casing. The intermediate support has a movable assembly, which is coaxial with and rotates about the axis of rotation, is integral with the first shaft, and has a second shaft for connecting two segments, and a bushing fitted onto the second shaft; and a fixed assembly, which is coaxial with the axis of rotation, and has a supporting body fitted to the bushing and connected rigidly to the casing, and a number of annular shields coaxial with the axis of rotation and interposed between the supporting body and the bushing.

Abstract: A wastewater treatment plant. The plant comprises separating equipment for separating the solid particles from the liquid part. The separating equipment comprises, in turn, an inlet opening and an outlet opening, which are substantially arranged in line along a common directrix. In the fluid mass, there is present at least one fluid-dynamic profile, which is suited to help the detachment of the solid particles from the liquid part. The plant is characterised in that the separating equipment comprises, furthermore, a second fluid-dynamic profile. The two fluid-dynamic profiles define between one another a first preferential flow channel of the liquid mass.

Abstract: A discharge device, preferably for a silo, comprising: an outer body (2), provided with an upper opening (21) and a lower opening (22); an inner body (3) positioned inside the first body (2); a plurality of arms (4), interposed between the outer body (2) and inner body (3) so as to connect the inner body (3) to the outer body (2). Each arm (4) is provided with a foot (5) endowed with at least one vibration damping portion (51) which has a resting surface on the outer body (2).

Abstract: A discharge device, preferably for a silo, comprising: an outer body (2), provided with an upper opening (21) and a lower opening (22); an inner body (3) positioned inside the first body (2); a plurality of arms (4), interposed between the outer body (2) and inner body (3) so as to connect the inner body (3) to the outer body (2). Each arm (4) is provided with a foot (5) endowed with at least one vibration damping portion (51) which has a resting surface on the outer body (2).