Solar-powered aeration device for sludge turnover and planting and method

A working method of a solar-powered aeration device for sludge turnover and planting, wherein, the solar-powered aeration device for sludge turnover and planting comprises:

• a floating body (3), wherein a grow bed (3a) is fixed on the floating body (3) and floats on water, the floating body (3) is fixedly provided with t air pumps (2);
• a bottom of the floating body (3) is fixedly connected with an inner pipe (4), an outer pipe (5) is sleeved on the inner pipe (4), a group of baffles (6) are fixed on an outer wall of the outer pipe (5);
• the outer pipe (5) is nested in an air chamber (10), a bottom of the air chamber (10) communicates and is fixedly connected with a water inlet pipe (14), the water inlet pipe (14) laterally communicates with a suction tube (15), the suction tube (15) swings up and down relative to the water inlet pipe (14);
• the baffles (6) correspond to a top face of the air chamber (10), the air chamber (10) can drive the outer pipe (5) via the baffles (6) to move upward;
• each of the air pumps (2) communicates with the air chamber (10) via the inner pipe (4) and the outer pipe (5) sequentially;
• an aeration ring (12) is fixedly arranged at a bottom of the outer pipe (5) and has an air outlet pipe (12c) in communication with an outside of the aeration ring (12);
• a movable foot (18) is rotationally provided at a tail end of the suction tube (15), the movable foot (18) adapts to surface fluctuations to swing in a range limited by an angle limiter (17), and the suction tube (15) has a suction opening (16) with an inner diameter which reduces from an outside to an inside of the suction tube (15);
• and
• wherein several openings are provided below the outer pipe (5), each with a cross section bigger than that of the outer pipe (5);
• the aeration ring (12) is fixed on a support (13a);
• a cross section of the aeration ring (12) is U-shaped;
• a micro-hole plate (12a) is provided at an U-shaped upper opening;
• an air outlet hose of the air pump communicates with the aeration ring (12) and an air opening (12b);
• the air opening (12b) is provided in an air collection chamber (11);
• a basal plate (13) is fixed under the openings below the outer pipe (5);
• and the support (13a) is fixed on the basal plate (13);
• the method comprising:
• floating the floating body (3) on a water surface;
• wherein the floating body (3) is provided with a solar panel (1) and the two air pumps;
• for proper use of solar energy, the two air pumps work at the same time under normal circumstance and alternatively in case of inadequate sunlight so as to prolong a working cycle;
• the grow bed (3a) is fixed on the floating body (3);
• plants are planted on the grow bed (3a);
• a pipe opening of the inner pipe (4) is at a distance of H away from water surface;
• an air outlet of each of the air pumps communicates with the aeration ring (12);
• the aeration ring (12) is fixed on the support (13a) in the outer pipe (5);
• the air opening (12b) is provided in the air collection chamber (11);
• and
• activating the air pumps are started, wherein the aeration ring (12) performs aeration in the outer pipe (5) such that water enters the suction opening (16), flows through the suction tube (15) and the outer pipe (5) sequentially and finally flows out via the pipe opening of the inner pipe (4);
• and the U shaped aeration ring (12) can prevent counterflow caused by air accumulates in the air collection chamber (11), when an air pressure in the air collection chamber (11) is greater than an attraction force of water flow, air flows into the air chamber (10) via an air vent (9b), and water in the air chamber (10) is exhausted such that a ballast tank (9) floats in the outer pipe (5);
• after a limit switch (7) hits the baffles (6) to command a solenoid valve (8) to open, air is exhausted from the air chamber (10) such that the ballast tank (9) sinks;
• during sinking, the movable foot (18) inclines backwards;
• as a pivot point of the movable foot (18) is eccentric to a gravity center of the suction tube (15), change of a gravity direction of the suction tube (15) results in relocation of the suction tube (15) along a tangent to circumference;
• the suction tube (15) moves up and down on the water inlet pipe (14) and can flatly and tightly fits an uneven water bottom after sinking;
• the suction tube (15) is rectangular, and the suction opening (16) which becomes bigger from the inside to the outside of the suction tube, uniformly suck sludge circumferentially;
• circumferential suction is performed at a bottom of a pond for aeration and sludge turnover;
• transferring to a new location for sludge turnover, wherein a remote control (8a) is started to command the limit switch (7) to normally close the solenoid valve (8);
• the ballast tank (9) floats to jack up the baffles (6) on the outer pipe (5) such that the outer pipe (5) is entirely withdrawn;
• a rope fixed at the floating body (3) is manually pulled for changing a location;
• then, the remote control is started to command the limit switch (7) to open the solenoid valve (8), air in the ballast tank (9) is exhausted such that the outer pipe (5) entirely sinks together with other components, and the suction tube (15) fits a water bottom for overturning sludge;
• relocating the suction tube (15) along the tangent to circumference each time when a cycle of moving up and down is completed, and wherein the suction tube (15) can flatly fit the water bottom.