The shallow filter equipment is composed of a number of standard sand cylinders, with a unique bidirectional automatic washing valve, which can realize the backwashing of multiple standard high-speed sand cylinders one by one in the normal operation of the system, and is controlled by an automatic controller. The utility model has the advantages of small backwashing water consumption, convenient installation and easy operation. The device has a high traffic volume and requires no maintenance.

· Application:

◇ Industrial water filtration has certain requirements for water quality. Such as steel oxygen gun water, boiler heat exchanger water filtration, can filter impurities in water, to avoid the blockage of pipelines and nozzles;

◇ Industrial circulating water filtration system;

◇ Agricultural irrigation, especially suitable for high flow, high impurity content of water sources, such as irrigation irrigation, park and golf course lawn irrigation;

◇ Aquaculture, swimming and water park industries.