Before the introduction, I will correct a mistake for some people who don’t know the working processing of the filter press. They think the filtering of filter press is based on the closing pressure of the machine. But this is wrong, in fact the filtering of the filter press is actually based on the feeding pressure of the feeding pump, it means the higher the feeding pressure, the lower cake moisture.
There are so many types of feeding pumps, I will introduce some usual pumps, such as: screw pump, diaphragm pump, plunger pump, slurry pump, multistage centrifugal pump (high pressure pump), gear pumps, etc.
Screw pump is mainly used for most materials, the feed pressure can be 0.6 or 1.2 MPa, the disadvantage is: do not have higher feeding pressure and do not suitable for the material with large particles.
Diaphragm pump is corrosion resistance and suitable for the material with fiber, there also has various pump material can be selected. The disadvantage is low feeding pressure & flow capacity.
Piston pump has high feeding pressure; the disadvantages is high price.
Slurry pump is corrosion-resistant, wear-resistant and suitable for chemical material, but the disadvantage is high power, high power consumption with high price.
The feeding pressure of multi-stage centrifugal pump is high. But it is not suitable for materials with high solid content and big particle size.
Gear oil pump can reach the food grade. But its feeding pressure is low and it is mainly for filtering the oil.
In addition to the above feeding pumps, we have other pumps that can be recommended. We usual select the pump according to the material. So if you need us to help you to choose the right feeding pump, please provide the following information, we will give you the most effective advice. 1. Material type; 2. Flow capacity per hour; 3. Particle size; 4. Temperature and pH value; 5. Voltage power frequency.
Welcome to send us the inquire. We will be appreciative for your timely suggestion if there has something wrong with my introduction. And we will revise it promptly. Thanks for your watching.