Setting and application effect of grid in integrated pump station

Setting and application effect of grid in integrated pump station

Grating must be set before the pump house of integrated pump station. When screw pump and submersible pump are used, fine grating can be set.

The setting of the grid should be determined according to the scale of the integrated pump station, the depth of the water inlet pipe, the way of grid decontamination and other factors. The grating well can be set separately or in the sump.

The grating should be removed mechanically. There should be no less than two groups of decontamination machines, and they should be standby for each other when necessary. The mechanical grating shall be provided with corresponding service gate.

The total width of the grid shall not be less than 2 times of the width of the inlet channel. The material should be stainless steel or flat steel.

The gap width between grid bars shall be determined according to the requirements of water pump. Generally, the maximum gap width shall be in accordance with the mechanical standard.

The inclination angle of the grid shall be adopted according to the way of grid decontamination, and shall not be greater than 70 degrees when it is removed manually. Mechanical removal should be 70-90 degrees. The upper end of the grating shall be level with the platform, and the lower end must be at least 0.5m lower than the bottom of the water inlet pipe and 0.5m away from the pool wall, or determined according to the installation and operation needs of mechanical decontamination.

The height of grating platform shall be at least 0.5m higher than the designed maximum water level in front of the grating during manual removal. During mechanical removal, it can be at or slightly higher than the ground elevation of grid well chamber.

The grid platform width shall not be less than 1.5m, and the aisle width on both sides shall not be less than 0.7m. During mechanical removal, there shall be a place for auxiliary facilities such as the gearbox and belt conveyor of the decontamination machine, and a maintenance channel with a width of 1.0 m, rainproof and protective measures for the motor and other components shall be reserved.

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