Any water source contains impurities to varying degrees, and the diameter of the outlet of the irrigation device in the micro-irrigation system is small, and the irrigation device is easily blocked by the impurities in the water source. Therefore, strict filtering of the irrigation water source is an indispensable first step in micro-irrigation, and it is a key measure to ensure the normal operation of the micro-irrigation system, extend the life of the irrigation device and ensure the quality of irrigation. Now, as a professional manufacturer of drip irrigation equipment, I will introduce 4 types of filter devices for common drip irrigation equipment.
Swirl type water sand separator
This type of filter is based on the working principle of gravity and centrifugal force. It removes solid particles with a density greater than that of water, and requires regular sand removal and cleaning. The time depends on the local water quality. Because the water flow is unstable at the moment when the pump is turned on and stopped, it will affect the filtering effect. It is generally used as a primary filter in groundwater sources, and it is better to use it together with a laminated filter or a screen filter.
This type of filter is a kind of filtering equipment that uses sand and gravel as the filter medium. It mainly removes suspended matter (such as algae) in the water. The sand and gravel need to be replaced regularly. The time depends on the local water quality. Be sure to use according to the design flow rate. Excessive flow rate will cause the filtration accuracy to decrease. When the inlet and outlet pressure drop is greater than 0.07 MPa, back flushing should be performed. It is generally used as a primary filter in surface water sources, and it works better when used together with a laminated filter or a screen filter.
The filter medium of this type of filter is nylon screen or stainless steel screen. When passing through the filter, impurities will be intercepted by the screen on the inner wall of the screen, which mainly removes various impurities in the water. The screen of the filter needs to be cleaned regularly. It is generally recommended to wash after each irrigation. This type of filter must be installed in the specified direction of water in the installation process, and cannot be used in reverse; if the screen or seal is found to be damaged, it must be replaced in time, otherwise the filtering effect on water will be lost. Generally used as a secondary filter with a rotary water-sand separator and a gravel filter.
This type of filter uses grooved plastic discs as the filter medium. When the impurities pass through the filter, they will be intercepted by the plastic discs outside the discs, mainly removing various impurities in the water. The filters need to be cleaned regularly. Depending on the water quality. This type of filter must be installed in the specified direction of water during installation and cannot be used in reverse. Generally, rotary water-sand separators and sand-gravel filters are used as secondary filters.