Retaining Self-Cleaning DeviceAn automatic self-cleaning device for sediment in rainwater retention ponds, also suitable for flushing large drainage pipes. The practical application has been effective.Its shape can be square or round.

One,

1Circular Flush DoorApplication：

Circular flap gates are installed in drainage outlets or inspection wells to prevent backflow of water bodies. When closed, the door cover seals tightly with the valve, requiring minimal opening force, making them suitable for low-pressure drainage pipe outlets.

2、Structure and Working Principle

The circular butterfly valve is composed of the valve body, door cover, connecting plate, pin shaft, and sealing ring. All structural components are made of SUS.304 materialThe seal is made of rubber. When there is water flow, the door panel opens under the force of the water; when there is no water flow, the door body closes under its own weight and, under the reverse water pressure, forms a seal with the stainless steel body to prevent backflow of the water.

3、Product Features

(1)Strong reverse pressure resistance.

(2)Waterhead low;

(3)Low power consumption, low water loss.

(4) SUS304 materialHigh corrosion resistance.

(5)Long lifespan, easy maintenance

Two,

Square gateUsage：

Square gate valves are installed at the outlets of drainage channels to prevent backflow of water bodies. These valves are adjustable for opening force and can withstand significant reverse water pressure.

2. Structure and Working Principle：

The square gate is composed mainly of the gate body, gate panel, sealing ring, pivot pin, and link plate, etc. components.

When water flows, the force of the current pushes the door open; when there's no water flow, the door falls under its own weight and, under the reverse water pressure, forms a seal with the door body to prevent backflow of water.

Product Features：

(1)Utilizing adjustable connections, the force arm is adjusted according to different operating conditions to control the valve stem opening force.

(2)The sealing ring features a hollow structure. When solid particles adhere to the sealing seat, the surface of the sealing ring remains elastic, enabling it to maintain proper sealing even with solid residues on its surface.

(3)The internal welding of the door panel has been reinforced with stiffeners, capable of withstanding high closing water heads.

Three: Two kinds of knockThe main operational process is as follows:∶

Storage of waterRainwater retention ponds are divided into multiple flushing channels. In each flushing channel, a separate storage room is isolated to store incoming water during the daily inflow of the retention pond, serving as a flushing source for cleaning the retention pond.

When water pollutants settle at the bottom of the pool and require cleaning, the rainwater retention pool should be drained.The PLC control system initiates the hydraulic system, opening the flushing door before the storage room, and commences cleaning the corridor.

Flush:After the flush gate is opened, a powerful flushing water flow (similar to dam release) is generated within the water storage room, flushing the bottom of each channel in the reservoir. Once the flushing is complete, the flush gate is returned to its original position, ready for the next watering flush.