The present invention provides a multi plate screw press sludge dewatering machine and a helical shaft thereof. The multi plate screw press sludge dewatering machine includes fixed rings, movable rings, the helical shaft, a sludge inlet tank and a sludge discharging tank; the helical shaft adopts a variable diameter variable pitch helical shaft, a lead angle arrangement sequence of a helical blade of the whole helical shaft is gradual reduction from the sludge discharging tank to the sludge inlet tank, and the lead angle arrangement sequence is gradually reduced from 16°-22° to 6°-14°; a pitch of the helical shaft is gradually increased along a direction from the sludge inlet tank to the sludge discharging tank; a diameter of a shaft body of the helical shaft is gradually increased along with a direction of the sludge discharging tank from a ⅓ position of a shaft length; and blockage prevention plates are arranged on two sides of the bottom of the helical blade. The helical shaft in the present invention is specially designed, so that the pitch is more reasonable, a helical angle is gentler, frictional resistance when sludge passes through the helical shaft may be effectively reduced, and phenomena of shaft blockage and shaft sticking of the sludge may be reduced.

A vapor relief strainer cleaning assembly comprises a turbine and dislodger assembly, wherein the turbine is configured to move a dislodger assembly disposed within a vapor screen relief vessel. Exemplary dislodger assemblies are configured to be powered by vapor or gas and to use excess vapor or gas optionally to dislodge non-condensable contaminants from the filter screen or to facilitate contaminant dislodgement from the inner wall of the filter screen.

The present disclosure relates to a separation device to separate contaminants from contaminated water. It comprises a container to receive the contaminated water. The container further comprises a contaminated water inlet, a filter, a presser for compressing and/or dewatering contaminants separated from the contaminated water, and a contaminant outlet. The container further comprises a gas inlet for generating gas bubbles into the contaminated water to further separate contaminants from the contaminated water. The present disclosure relates to a use of such a separation device and a method of separating contaminants from contaminated water.

The present invention provides a multi plate screw press sludge dewatering machine and a helical shaft thereof. The multi plate screw press sludge dewatering machine includes fixed rings, movable rings, the helical shaft, a sludge inlet tank and a sludge discharging tank; the helical shaft adopts a variable diameter variable pitch helical shaft, a lead angle arrangement sequence of a helical blade of the whole helical shaft is gradual reduction from the sludge discharging tank to the sludge inlet tank, and the lead angle arrangement sequence is gradually reduced from 16°-22° to 6°-14°; a pitch of the helical shaft is gradually increased along a direction from the sludge inlet tank to the sludge discharging tank; a diameter of a shaft body of the helical shaft is gradually increased along with a direction of the sludge discharging tank from a ⅓ position of a shaft length; and blockage prevention plates are arranged on two sides of the bottom of the helical blade. The helical shaft in the present invention is specially designed, so that the pitch is more reasonable, a helical angle is gentler, frictional resistance when sludge passes through the helical shaft may be effectively reduced, and phenomena of shaft blockage and shaft sticking of the sludge may be reduced.

A filtering device for removing dirt particles and contaminants from a plastic melt is disclosed. The filtering device includes a housing having a filter chamber, an inlet for feeding plastic melt, an outlet for channeling plastic melt out, and a dirt outlet for discharging dirt particles from the housing. The filtering device also includes a filter element arranged in the filter chamber to retain any dirt particles contained in the stream of melt, and a cleaning unit for cleaning the filter element of dirt particles retained by means of the filter element. The cleaning unit having a cleaning head with a scraper member for detaching dirt particles from the filter element. The scraper member is coupled to a servomechanism to press the scraper member onto the surface of the filter element. The servomechanism has at least one bellows cylinder including a foot section, a head section, a deformable bellows element, and a pressure chamber of variable volume.

The present disclosure provides a water floating object treatment device for sewage treatment, including water pump, motor, round box, butt joint hole, liquid inlet pipe, electric adjusting valve, pneumatic controller, round frame, slurry pump, round tube, three-blade long plate, fan-shaped scraping plate, fine screw rod, guide sliding rod, wire brush bristle, assembling hole, fine-hole filter plate, strip hole, round plate, air cylinder, rubber round block, fan-shaped hole, threaded hole, and sliding hole. The present disclosure is reasonable in design, and function of filtering water in a treatment tank is realized. By replacing and installing the fine-hole filter plates with different sizes of holes, different degrees of filter effects are achieved. Meanwhile, the filtered water can be injected into corresponding treatment tank.

A pond filter unit and a method for operating a pond filter unit is provided. A control unit controls the operation of the pond filter unit, including the cleaning cycle of the filter. The pond filter unit further includes one or more plugs for connecting one or more auxiliary devices, such as a separate pump, one or more additional pond filter units, illumination means/lamps, air pumps, and/or feed automats. The control unit of the pond filter further controls the one or more auxiliary devices connected to the plugs, such as pumps, air pumps, automatic feeding devices based on input settings for each of the one or more auxiliary devices. The control unit further controls the cleaning cycle for cleaning of the filter in the vessel.

An apparatus for wastewater filtration having a barrel, a basket and a screw on a shaft rotating therein for pushing solid in a distinct output. A removable cartridge comprises a cover for the barrel, the cartridge comprising a pre-sealed shaft connector which releasably connects to at least the upper shaft portion or the lower shaft portion to form the shaft. The screw comprises a brush on an outer rim thereof, the brush having radially outwardly oriented bristles that scrape an inner surface of the basket. The screw comprises a winged wiper at a bottom thereof for sweeping a bottom surface of the barrel, and the solid-material output is provided at the bottom surface of the barrel and is shaped as a rectangular opening which is offset from a central axis of the screw. Solid removal efficiency and maintenance are thereby improved.

A shearing blade is used in a filtration device including a filtering element having a filtering surface and a plurality of filter pores provided on the filtering surface for filtering unfiltered fluid introduced into a primary side, a scraper abutting the filtering element for cleaning the filtering surface by rotating in a rotational direction, a pillar provided in the primary side to which the scraper is attached, and a tube body. The front end portion of the shearing blade is at least disposed between the filtering surface and a circle defined by the outer circumferential end of the pillar in the radial direction, and the distance between the front end portion and the filtering surface in the radial direction is shorter than the distance between the rear end portion of the shearing blade and the filtering surface in the radial direction.

The present disclosure provides a water floating object treatment device for sewage treatment, including water pump, motor, round box, butt joint hole, liquid inlet pipe, electric adjusting valve, pneumatic controller, round frame, slurry pump, round tube, three-blade long plate, fan-shaped scraping plate, fine screw rod, guide sliding rod, wire brush bristle, assembling hole, fine-hole filter plate, strip hole, round plate, air cylinder, rubber round block, fan-shaped hole, threaded hole, and sliding hole. The present disclosure is reasonable in design, and function of filtering water in a treatment tank is realized. By replacing and installing the fine-hole filter plates with different sizes of holes, different degrees of filter effects are achieved. Meanwhile, the filtered water can be injected into corresponding treatment tank.