Criteria for filter selection

A filter.com/products" rel="noopener noreferrer" target="_blank">filter is a device that removes a small amount of solid particles from a liquid or gas. It protects the normal operation of the equipment. When the fluid enters the filter cartridge with a certain standard filter screen, its impurities are blocked, and the clean filtrate is discharged from the filter outlet. When cleaning is needed, just take the detachable filter cartridge out for cleaning.

filter selection

1. Filter inlet and outlet diameter:

In principle, the inlet and outlet diameters of the filter should not be smaller than the inlet diameter of the matching pump, generally the same as the diameter of the inlet pipe.

2, nominal pressure selection

The pressure level of the filter is determined according to the maximum pressure that may exist in the filter line.

3. According to the process requirements of the medium, select the number of holes

The size of impurities is the primary consideration in the selection of the number of filter holes. For details, please refer to "Filter Specifications"

4. Material selected for filtration equipment

The material of the filter is generally the same as the material of the connected process tube. Cast iron, carbon steel, low alloy steel or stainless steel filters can be considered for different usage requirements.

5. Calculation of filter resistance loss: For water filters, the pressure drops to 0.52~1.2kPa at a constant flow rate of general accounting.

filter application

1, stainless steel filter

Stainless steel filters are widely used in steam, air, water, oil and other media pipelines to protect pipeline system equipment such as pumps and valves. Avoid blockage and damage caused by impurities such as rust and welding ballast in the pipeline.

The stainless steel filter of Lvyuan has advantages.

1) Strong anti-fouling performance, convenient for sewage discharge;

2) Large circulation area and small pressure loss;

3) Simple structure, small size and light weight;

4) The filter material is stainless steel, which has strong corrosion resistance and long service life.

2, Y-type filter

Y-type filter is usually used at the inlet of pressure reducing valve, fixed water level valve or other equipment to eliminate impurities in the medium and protect the normal operation of valves and equipment. The Y-type filter has advanced structure and low resistance.

3, Y-type stretch rod elastic filter

Y-shaped stretch rod elastic filter, etc. are new planning options. The Y-type filter is combined with an elastic joint. The structure is simple and easy to use. Due to the different lengths between the flanges of various standard products, it brings inconvenience to the equipment on the fixed pipe. The equipment can be used for defect treatment of the flanges of different specifications. Tie-rod elastic filters are mainly used in high-rise buildings, multi-storey buildings or factory water supply and drainage pipelines. Generally, the equipment is installed on the first-level equipment such as inlet pressure reducing valves, pressure reducing valves, and fixed water level valves. Y-type stretch rod elastic filters are installed The purpose of the device is to remove pipeline debris or equipment and ensure the normal operation of valves or equipment.

4, frame filter

Small devices that remove a small amount of solids in liquids to protect the normal operation of compressors, pumps and other equipment. It is also a small device to improve product purity and purify gas. Therefore, frame filters are widely used in petroleum, chemical, chemical fiber, medicine, food and other industries. The structure of the frame filter consists of a shell, a drain cover, a filter element, a filter screen, and a bolt.

5, T-type filter

T-type filters are widely used in steam, air, water, oil and other types of pipelines. Avoid blockage and damage caused by rust, welding slag and other debris in the pipeline to protect various equipment on the pipeline system, such as water pumps, valves, etc.