The circulating water side filter

Product Introduction

The circulating water side filter does not install the circulating water side filter on the total circulation pipeline to filter all the circulating water once, but leads a part of the circulating water to filter on the total circulation pipeline. The circulating water side filter filters the impurities in the system through the gradual and repeated circulation intercession, and filters the impurities out of the water circulation system through backwashing.

Principle of Operation

Filtering status:

The shallow filter is composed of several filter units. When the system is in the filtering state, the unfiltered water is uniformly distributed through the self-developed water distributor, and the water passes through the packing layer (refined homogeneous quartz sand) in the filter in a laminar flow state. When water flows through the packing layer, impurities are trapped in the packing layer. The bottom of the filter has a plurality of evenly distributed water collector, the filtered water will be evenly collected and drawn out, advection filtration, can make the filter filter at high flow rate, still can achieve a better filtering effect.

Backwash state:

With the accumulation of impurities in the packing layer, the loss of internal indenter will be increased. When the loss of inlet and outlet water pressure heads reaches the set value, the system will be converted to the backwashing state. When the backwashing is over, the hydraulic valve will change the direction of the water supply to realize backwashing one by one, so as to facilitate the cleaning of accumulated impurities.

When the system is in the state of backwashing, filtration still continues. The standard unit sand cylinder to be backwashed is not filtered, and other standard unit sand cylinders in the system are still filtered. The filtered clean water is used to backwash the standard unit sand tank, and the rest is sent to the user. Backwash sewage is discharged through the backwash outlet of the hydraulic valve. In the high-speed sand cylinder filtration system, the water collector can make the packing between the packing rub each other, greatly improve the backwash efficiency, reduce the required backwash water (clean water), at the same time, there is no running material phenomenon in the backwash. The backwashing time of one standard unit sand cylinder is 3 minutes. After the backwashing is finished, the loss of the pressure head inside the sand cylinder of the standard unit is reduced to a reasonable range, the constant pressure device gives a recovery signal, the hydraulic valve is restored to the filtering state, and the sand cylinder of the next standard unit is ready to enter the backwashing state. The system can also control the backwashing by time, and the default backwashing time is 4 hours. Adjust the time according to the working condition, dual system control regardless of primary and secondary, which first come first execution.

Advantages of Products

1. High filter speed, low pressure loss, to solve the problem of slow filter speed and small flow of ordinary mechanical medium filter.

2. Modular setting, small area, less distribution, less investment. The area is reduced by more than 40%, and the quantity of piping is reduced by more than 50%.

3. Manual, semi-automatic, automatic backwash optional.

4. Backwashing water source can be selected in the system, water tower or external water source, and can be automatically switched.

5. Multi-unit combination, processing flow can be adjusted as needed.

6. The shell and pipe are made of carbon steel Q235B or stainless steel.

8. Filter unit adopts single chamber design, good backwashing effect and low sand running rate.

9. The water collector can be made of stainless steel /ABS, with long service life.

10. The outlet pipe is set at the bottom of the unit, so the water resistance is smaller and the maintenance is more convenient.

Product Details