What is a basket strainer
The basket strainer is a small water filter that removes a small amount of solids in the liquid. Because its filter element is a basket-like filter, it is called a basket strainer(also called basket type strainer or basket filter housing). The function of this equipment is to remove some solid particles with a fixed diameter in the liquid, so as to ensure the normal operation of the downstream equipment. When various fluids pass through the filter, the solid impurities in them will be blocked in the filter screen. It can make the whole series of back-end equipment run more smoothly and safely, thereby effectively prolonging the service life of the back-end equipment.
The structure of the basket strainer
The main components of the blue filter are divided into pipeline, filter housing, filter screen, flange (including flange cover). The pipeline mainly plays the role of connection, which is used to connect the front and rear equipment or water sources in series; the cylinder is the filter generating container, and its material can be equipped according to the filtered liquid, and the wall thickness can be selected according to the maximum nominal pressure in the waterway; the filter screen is The precision of the components used to intercept solid impurities is selected according to the requirements of the medium flow process. The filters of different specifications can intercept the impurity particles of different diameters; the flanges are used for butting pipelines, and their size is basically the same as that of the front and rear. The diameter of the pipeline is the same; the flange cover is used to open the equipment, clean or replace the filter screen.
Basket type filter elementHow do basket strainers work
When the basket strainer is working, the medium enters the inner side of the filter screen, enters the outer side of the filter screen after being filtered by the filter screen, and enters the pipeline system through the outlet. When the filter element is used for a certain period of time due to the blockage of dirt, the resistance of the water becomes larger. At this time, it is necessary to open the cover of the filter, take out the filter element inside and clean it, and then continue to use it.
The use of a basket strainer can prevent the blockage of the water pump and the rear equipment and ensure the normal operation of the entire system.
Working principle of basket strainerTechnical parameter
Shell material: cast iron, carbon steel, stainless steel
Filter frame filter material: stainless steel
Seal material: oil-resistant asbestos, flexible graphite, PTFE
Working temperature (℃): -30～+450
Nominal pressure (MPa): 0.6～6.4 (150Lb～300Lb)
Filtration accuracy (mesh/in): 10-300
Connection method: flange, butt welding
Features
For solid impurities of different diameters, filters of different specifications will be equipped, so that the liquid discharged from the filter outlet is cleaner. After intercepting a certain amount of impurities, the filter screen can be disassembled for cleaning, and then reloaded into the equipment, and can be used repeatedly without any increase in cost, and maintenance is very simple.
1. The main body of the filter housing is all designed with stainless steel 304 or 316L, which is anti-corrosion and durable;
2. The top cover is connected by lifting ring bolts, which can be disassembled quickly;
3. The import and export of the equipment are on the same level, and the installation is simple and fast;
4. The filter can be taken out, and it is easy to disassemble when the filter is damaged or cleaned;
5. Tailor-made filtration precision to meet different customer needs;
6. The surface of the equipment is treated with matte or mirror polishing sandblasting process, and the product is beautiful.
How to choose a basket strainer
1. Import and export diameter
In principle, the inlet and outlet diameter of the filter should not be smaller than the inlet diameter of the matching pump, which is generally the same as the diameter of the inlet pipeline.
2. System pressure
Determine the pressure rating of the filter according to the highest possible pressure in the filter line.
3. The choice of precision
The main consideration is the particle size of impurities to be intercepted, which is determined according to the process requirements of the medium.
How to maintain a basket strainer
The basket strainer is connected to the pipeline through the flange, and the connection is convenient. During use, no manual intervention is required. Just need to do some maintenance on a regular basis. Generally, the diameter of the intercepted solid particles will be larger than the diameter of the filter screen hole, and all the particles will be blocked in the front section of the filter screen. When the filter screen intercepts a certain amount of impurity particles, the water flow space will be blocked, resulting in an excessive pressure difference between the front and rear of the device. At this time, you only need to unscrew the screw plug at the bottom, remove the water pressure in the device, open the flange cover, take out the filter, and clean the impurities inside. After cleaning, put it back in the device and the filter screen can be reused.
1. The core part of the strainer is the filter element. The filter element is composed of a filter frame and a stainless steel wire mesh. The stainless steel wire mesh is a wearing part and needs special protection;
2. When the strainer works for a period of time, certain impurities are deposited inside the filter. At this time, the pressure drop increases and the flow rate decreases. It is necessary to remove the impurities in the filter core in time;
3. When cleaning impurities, pay special attention to the fact that the stainless steel wire mesh on the filter element cannot be deformed or damaged. Otherwise, if the filter element is installed again, the purity of the filtered medium will not meet the design requirements, and the compressors, pumps, instruments and other equipment will be damaged. to destruction;
4. If the stainless steel wire mesh is found to be deformed or damaged, it needs to be replaced immediately.
Application of basket strainers
Xxfil basket strainer have been widely used in various industries, and are popular because of their ease of use and low maintenance costs. In particular, the material of the equipment can be selected according to various needs, suitable for various liquid working conditions, and can accurately and effectively intercept solid impurities in the liquid. The filtration area of the basket strainer is more than 2 times larger than that of the Y-type filter strainer and T-type filter strainer of the same type, and the efficiency is also better.
Weak corrosive materials in petrochemical production, such as: water, ammonia, oil, hydrocarbons, etc.
Corrosive materials in chemical production, such as carbonic acid, ester acid, etc.
Low temperature materials in refrigeration, such as: liquid oxygen and various refrigerants.
Light industrial food, materials with hygiene requirements in pharmaceutical production, such as: beer, beverages, dairy products, grain and pulp supplies, etc.
