Automatic filter for sea sand water treatment backwash filter

Outline drawing and dimensions

Filtering process

When the set pressure difference or time is reached, the self-cleaning action starts, the decelerating motor drives the backwash rotating arm to aim at one or a group of filter screens, the upper end of the filter screen is sealed, the lower end is connected to the cleaning nozzle, and the backwash valve is opened. The filter screen is connected with the sewage pipe, and the pressure difference between the outside of the filter screen and the sewage outlet drives the filtered clear liquid to flow in the reverse direction to flush the filter cake on the inner surface of the filter screen and discharge it into the sewage pipe. After the backwashing of one filter element/group is completed, close the backwash valve, and aim the cleaning rotating arm at the next filter/group for backwashing. All filters are backwashed one by one/group.

Automatic cleaning control system

The deceleration motor drive shaft is equipped with a positioning plate and a cleaning rotating arm. Each positioning hole on the positioning plate corresponds to each filter screen. The cleaning rotating arm corresponds to one of the positioning holes. When the positioning hole reaches the sensing channel of the positioning sensor, The positioning sensor output signal causes the motor to stop rotating, the cleaning rotor has been aligned with a filter element, the backwash valve is opened and closed after a few seconds, the cleaning is completed, the motor continues to run, the positioning sensor is turned on again by the next positioning hole, and the motor stops and cleans The next filter element.   

1. Automatic continuous online filtering, uninterrupted flow during backwashing, reducing downtime and maintenance costs.

2. The filter screen filters the gaps, high-energy backwashing, high-strength structure, and the service life is more than 10 years.

3. Pulse backflushing, after aligning the filter screen, open the drain valve backflushing, backflushing has high intensity, high efficiency, short time-consuming, and water saving.

4. Water at both ends of the filter screen at the same time to increase the flux of the filter element, and the free surge of water can delay the surface blockage and avoid blockage at one end of the filter element.

• Applicable fields: Raw water treatment, water treatment system, refrigeration system, steel, papermaking, mining, petrochemical industry, precision metal manufacturing, municipal facilities, etc.

• Applicable liquid types: Ground water, sea water, lake water, reservoir water, circulating cooling water, chilled water, spray water, heat exchange water, sealing water, bearing cooling water, oil well water injection, process circulating water, machining coolant, cleaning water Wait.

Cases