Abstract: The invention relates to a cleaning rotor (1) having a longitudinal axis (L), a base part (5), which extends concentric to the longitudinal axis (L), a head part (3) and a strut element (9) that extends between the base part and the head part. Said strut element (9) extends in a helical manner about the longitudinal axis (L). The invention is characterized in that at least one supporting part (7) is placed between the base part (3) and the head part (3) while extending parallel to the longitudinal axis (L). The strut element (9) is supported on the supporting part (7) and is concave over its length.

Abstract: A liquid aspirator, in particular for liquids containing solids such as sludge, has a receptacle into which liquid can be sucked in by an aspirator motor through a vacuum connector and from which the liquid can drain through a drainage. The receptacle has at least two separate receiving chambers and a control that controls that the receiving chambers are filled alternatingly with liquid while the receiving chambers that are not being filled are drained. The receiving chambers are sealable relative to the vacuum side of the aspirator motor by main valves that are preferably mechanically connected.

Abstract: The invention relates to a cleaning rotor (1) having a longitudinal axis (L), a base part (5), which extends concentric to the longitudinal axis (L), a head part (3) and a strut element (9) that extends between the base part and the head part. Said strut element (9) extends in a helical manner about the longitudinal axis (L). The invention is characterized in that at least one supporting part (7) is placed between the base part (3) and the head part (3) while extending parallel to the longitudinal axis (L). The strut element (9) is supported on the supporting part (7) and is concave over its length.

Abstract: A sludge extractor with a receiving tank, on which a suction connection for a suction element, which draws in a sludge-containing liquid, and a discharge connection for discharge element, which discharges the sludge-containing liquid, are mounted, and with a motor for driving a suction device in such a way that a negative pressure is created in the receiving tank, which negative pressure keeps a vacuum valve on the discharge element closed, is characterized in that the negative pressure acting on the vacuum valve is lower than the pressure which acts on the vacuum valve as a result of the sludge-containing liquid when a predetermined fill level is reached by the sludge-containing liquid in the receiving tank.

Abstract: The invention relates to a pool filter comprising a housing, which can be supported on a ground side on the base, a longitudinal axis and a transversal axis, and a water inlet, a channel outlet and a pool outlet which are embodied in the housing wall thereof. A flow path from the water inlet to the pool outlet is embodied in the housing on the filter in the filter system and a filter device is arranged in the flow path. The invention is characterised in that a pre-filtering unit is arranged in the flow path in front of the filter device.

Abstract: A liquid aspirator, in particular for liquids containing solids such as sludge, has a receptacle into which liquid can be sucked in by an aspirator motor through a vacuum connector and from which the liquid can drain through a drainage. The receptacle has at least two separate receiving chambers and a control that controls that the receiving chambers are filled alternatingly with liquid while the receiving chambers that are not being filled are drained. The receiving chambers are sealable relative to the vacuum side of the aspirator motor by main valves that are preferably mechanically connected.

Abstract: A pond pump includes a housing having a discharge port and an intake area, the intake area having a plurality of openings. A pump device is installed in the housing. A suction port in the housing is in fluid communication with the discharge port via the pump device. An intake connector is supported by the housing and is movable relative to the suction port so that the percentage of suction volume of the suction port drawn in between the intake connector and the intake area can be varied. The pond pump also has a motor for driving the pump device, and a control unit for controlling the pump device and the motor.

Abstract: A filter device with a UVC lamp for filtering fluids, with a lamp housing, which is installed in a flow of the fluid to be filtered and has a principal axis, is characterized by the fact that at least one cleaning element is arranged in contact with a fluid-side surface of the lamp housing and can rotate about an axis of rotation that coincides with the principal axis.

Abstract: A filter device for filtering flowing liquids comprises a compressible filter medium in a vessel and a device by which the filter medium can be compressed by means of an actuation handle, so that impurities can be pressed out of the filter medium. In addition, the filter device contains a multipath regulator which can be adjusted for filtering, back-rinsing and clear-rinsing by means of three flow paths. It is also possible for the filter device to be outfitted exclusively with a multipath regulator or a compressing device.

Abstract: A submersible motor-driven pump includes a housing having an intake connection and a discharge connection; an impeller mounted in the housing between the intake connection and the discharge connection; and a shaft on which the impeller is mounted, the shaft being supported for rotation in the housing. The shaft extends concentrically into a cylindrical can mounted in the housing form a free space between the shaft and the can. Anti-freeze apparatus is installed in the housing for protecting the shaft.

Abstract: A fountain pump includes a housing for a pumping device, the housing having a housing wall constructed as a filter through which water can flow into the housing, and an outlet through which water can be pumped out of the housing. At least one additional filter element which is detachably mounted to the housing.

Abstract: The invention relates to a pool filter comprising a housing, which can be supported on a ground side on the base, a longitudinal axis and a transversal axis, and a water inlet, a channel outlet and a pool outlet which are embodied in the housing wall thereof. A flow path from the water inlet to the pool outlet is embodied in the housing on the filter in the filter system and a filter device is arranged in the flow path. The invention is characterised in that a pre-filtering unit is arranged in the flow path in front of the filter device.

Abstract: The invention relates to a mud suction unit having a suction element which is connected to a receiving container and has a motor for the generation of a suction flow and also has a discharging element attached to the receiving container.

Abstract: A filter device for filtering flowing liquids comprises a compressible filter medium in a vessel and a device by which the filter medium can be compressed by means of an actuation handle, so that impurities can be pressed out of the filter medium. In addition, the filter device contains a multipath regulator which can be adjusted for filtering, back-rinsing and clear-rinsing by means of three flow paths. It is also possible for the filter device to be outfitted exclusively with a multipath regulator or a compressing device.

Abstract: A sludge extractor with a receiving tank, on which a suction connection for a suction element, which draws in a sludge-containing liquid, and a discharge connection for discharge element, which discharges the sludge-containing liquid, are mounted, and with a motor for driving a suction device in such a way that a negative pressure is created in the receiving tank, which negative pressure keeps a vacuum valve on the discharge element closed, is characterized in that the negative pressure acting on the vacuum valve is lower than the pressure which acts on the vacuum valve as a result of the sludge-containing liquid when a predetermined fill level is reached by the sludge-containing liquid in the receiving tank.

Abstract: A filter device with a UVC lamp for filtering fluids, with a lamp housing, which is installed in a flow of the fluid to be filtered and has a principal axis, is characterized by the fact that at least one cleaning element is arranged in contact with a fluid-side surface of the lamp housing and can rotate about an axis of rotation that coincides with the principal axis.

Abstract: The invention relates to a pressure joint (1) for pumps with a pump connection (3.8) and a first discharge connection (5.5) comprising a second discharge connection which can be throttled to produce a jet which is connected to the first discharge connection (5.5) on a first joint element (3.2) and which has a pump connection (3.8) which can be moved at an angle relative to a second joint element (3.1).

Abstract: An apparatus for the treatment of liquids, particularly of cycled water of fish tanks or of ponds with an irradiation unit which is intended to act upon the liquid with light, particularly UV light, and includes at least one lamp which is disposed in a dry space that is separated from the liquid to be irradiated by a transparent glass shield, has at least one cleaning element which faces the glass shield and is disposed movably on the side of the glass shield in contact with the liquid.

Abstract: A centrifugal pump, particularly for fountains and aquariums, for which an electric motor and a pump are disposed coaxially to one another, the electric motor being constructed as a single-phase synchronous motor with a permanent magnet rotor and connected with an open impeller of the pump with impeller blades, which are bent back from a hub towards the outside spirally with respect to a specified direction of rotation, is improved in the direction of a simple and inexpensive production as well as a compact and robust construction without a significant loss in overall efficiency owing to the fact that the impeller blades are constructed flexibly in such a manner that, if the synchronous motor starts counter to the specified direction of rotation, they are propped open by at least 2% in the radial length.

Abstract: A submersible electrical appliance includes a housing having a water-tight function chamber and at least one water-tight junction chamber, the housing having a bulkhead wall separating the function chamber from the junction chamber, and internal water-tight compression electrical fittings passing through the bulkhead and extending beween the function chamber and the junction chamber.