Introduction of filter press selection
1. Filtration areaThat's the most important thing. The filter area is directly related to the processing capacity, and the "filter chamber volume" can be derived from the filter areas, which is the amount of mud cake that the machine can store. According to the number of sewage every day, sewage sludge content how much, to calculate the daily number of mud cake.
2. Rack size10-30 square, choose 630 rack;30-60 square, choose 800 type rack;80-120 square, choose 1000 type rack;120-250 square, choose 2500 rack;300-500 square, choose 1500 rack.
3. Open flow and undercurrentRecommended to choose "clear flow," the effect is more intuitive. There are special requirements or materials have volatile and so on can be considered undercurrent.
4. Filter clothFilter cloth first look at the material, such as polyester, polypropylene, etc., mainly according to the material temperature, pH and other parameters to choose.Then select the air permeability, air permeability is expressed in 200 Pa pressure, in the area of 1 square decimeter through the amount of air. Many customers will ask how many purposes filter cloth. Mesh number generally indicates the number of holes per unit area, so as to express the degree of sparsity of the cloth, but the aperture size, so mesh number can not be very accurate description of the filter cloth filtration performance.
5. Automatic configurationThe most common such as "automatic pull plate," many customers will choose, especially large models, manual pull plate is very heavy. Small models recommend a pull, higher efficiency. Other common such as automatic liquid turn plate "filter plate lower edge dripping," automatic filter cloth cleaning and so on, miniaturized cost-effective use of "high-pressure car wash water gun."
Working Principle and Steps of Filter Press
Filter press generally by the "pressure plate, thrust plate, filter plate, hydraulic cylinder, main beam, transmission and pulling device" and other components. The hydraulic cylinder piston pushes the head plate to make the filter plate press the adjacent filter plate to form a filter chamber; The mud is fed into the filter chamber by the feed pump, the water permeable filter cloth is discharged through the discharge port, and the solid mud forms a filter cake in the filtering chamber. When the mud is full of the filter chamber, the high-pressure pump is used to press the mud to filter, so that the solid and liquid are separated in the filter room.
1. Pressure filter plateOperate the hydraulic system to move the tail plate towards the head plate, pressing all the strainer between the head and tail plate. Thus, a hollow sealed filter chamber is formed between the adjacent filter plates.
2. Pressure filtration processThe feed pump delivers the mud from the feed hole of the tail plate to the filter chamber, when the filter room is full of mud, the pressure filtration process begins, the mud is separated by the pressure of the feed pumps.
At the beginning of filter press, the mud in the filter room cake thickness is not big, cake resistance is small, dehydration speed is fast, usually at this time with "low head, high flow pump." With the increase of cake thickness, resistance increases, pressure filtration rate decreases, then apply "high lift small flow pump."
The time required for the filtration process is determined according to the filtration characteristic of the mud and the technological requirements. When the specified filtration time is reached, the feeding is stopped and the process is completed.
3. Release filter plateOperate the hydraulic system and return the head plate to its original position.
4. Filter plate dischargeThe transmission chain on the transmission and pulling device successively pulls the filter plate apart, the filter cake falls off by the weight and is transported away by the conveyor at the lower part.
Jingjin Equipment Inc as a China filter press manufacturer can provide the most complete quality products.
