A water conserving, secure and environment protective device includes a stationary base, a reflux column connected with the stationary base and a floating mechanism assembly sleeved on the reflux column. The reflux column defining a plurality of reflux holes to reflux an external water source. A water absorption mechanism assembly includes a plurality of supporting frames, a water pump arranged on an upper portion of the supporting frames, and a plurality of water suction pipes communicated with the water pump to suck the external water source.

A water transportation system may include one or more water pumps and a water pipeline to transport water from a starting point located at a certain height on an obstacle to a lower destination on the other side of the obstacle. The pump can be located at the top of the obstacle to fill the pipeline with water after pumping for a predetermined of time before being turned off, and the water can still continuously flow to the destination by force of gravity acting on the water in the segment of the pipe that extends from the peak point to the destination point to enable water transportation over the obstacle by taking advantage of both the action of gravity on the water flowing downward in the pipe and of the vacuum that is created in order to cause the water to flow continuously from the starting point to the destination.

A water transportation system may include one or more water pumps and a water pipeline to transport water from a starting point located at a certain height on an obstacle to a lower destination on the other side of the obstacle. The pump can be located at the top of the obstacle to fill the pipeline with water after pumping for a predetermined of time before being turned off, and the water can still continuously flow to the destination by force of gravity acting on the water in the segment of the pipe that extends from the peak point to the destination point to enable water transportation over the obstacle by taking advantage of both the action of gravity on the water flowing downward in the pipe and of the vacuum that is created in order to cause the water to flow continuously from the starting point to the destination.

A pumping system is provided. The pumping system includes at least one elongated tubing. The elongated tubing includes a first end forming an entrance and a second end forming an exit. A pump discharge tubing is disposed within the elongated tubing and runs from the first end to the second end of the elongated tubing. A pump is coupled to the pump discharge tubing and is operable to pump liquids through the pump discharge tubing. A seal plate is releasably secured to a flange formed at the exit of the elongated tubing. The pump discharge tubing snuggly runs through an opening formed through the seal plate and releasably secures to a manifold.

Modular electrical appliance for recycling greywater, connected to: a drainage pipe (S1) via which greywater enters into the greywater reservoir (1) thereof; a sanitary water supply (S) via which sanitary water enters into the auxiliary reservoir (7) thereof; and a flush pipe (D) which connects to the standard opening of the tank (WC) of a toilet. The electrical appliance has a built-in three-way valve (4) which opens the outlet of said greywater reservoir (1) if it contains a sufficient amount for a full flush. If not, the outlet of said auxiliary reservoir (7) is opened. A hydraulic pump (3) connected to the electrovalve (4) pumps the flush water, grey or sanitary, through the flush pipe (D).

An assembly and system for pumping a volume of fluid over a body of water, comprising a shell (12) defining a volumetric space within a vessel (10) in which air is extractible from and introducible into, an opening (18) to allow air to be extracted from and supplied into the vessel (10) to allow fluid to be drawn in and expelled from the vessel (10), a first valve (16a) and a second valve (16b) to permit and restrict fluid entering and exiting the vessel (10) and a pump (20) to extract and introduce air from and into the vessel (10) to cause fluid to be drawn into and expelled out of the vessel (10). The vessel (10) floats in the body of water.

An assembly and system for pumping a volume of fluid over a body of water, comprising a shell (12) defining a volumetric space within a vessel (10) in which air is extractible from and introducible into, an opening (18) to allow air to be extracted from and supplied into the vessel (10) to allow fluid to be drawn in and expelled from the vessel (10), a first valve (16a) and a second valve (16b) to permit and restrict fluid entering and exiting the vessel (10) and a pump (20) to extract and introduce air from and into the vessel (10) to cause fluid to be drawn into and expelled out of the vessel (10). The vessel (10) floats in the body of water.

A water conserving, secure and environment protective device includes a stationary base, a reflux column connected with the stationary base and a floating mechanism assembly sleeved on the reflux column. The reflux column defining a plurality of reflux holes to reflux a water source. A water absorption mechanism assembly includes a plurality of supporting frames, a water pump arranged on an upper portion of the supporting frames, and a plurality of water suction pipes communicated with the water pump to suck an external source of water.

In a water distribution network having at least one pump for distributing water over the network, the pump is driven by an electric motor and a variable speed device, and there is a device for operating the pump in phases. On starting the pump in a first starting phase the pump speed rises rapidly from zero to a threshold speed between zero and a maximum pump speed, in a second starting phase the threshold speed is maintained, in a third starting phase the pump speed is increased more slowly to a maximum speed, and in a fourth operating phase the maximum speed is maintained. On stopping the pump, in a first stopping phase the pump speed decreases gradually from a maximum speed to an intermediate speed, and in a second stopping phase the pump speed decreases rapidly from the intermediate speed to zero.

An accumulator for a vacuum drainage system. The accumulator includes a body having a bottom wall, sidewalls and top wall, the bottom wall, sidewalls and top walls all cooperating to define a reservoir within the body. A first inlet port and a first outlet port are provided toward a first end of the body, and a second inlet port and a second outlet port are provided toward a second end of the body. The first and second inlet ports respectively define first and second inlet openings into the reservoir, and the first and second outlet ports respectively define first and second outlet openings from the reservoir.