The Difference Between Open-Flow and Hidden-Flow Filter Press

The Difference Between Open-Flow and Hidden-Flow Filter Press

As a commonly used solid-liquid separation equipment, many people are familiar with filter presses. There are two ways of discharging liquid from filter presses. One is open flow, and the other is hidden flow. So, what is the difference between open-flow and hidden-flow filter press? This article will introduce in detail the difference between open-flow and hidden-stream filter press.

Introduction of Open Flow and Hidden Flow:

Open flow: The water outlet method in which the filtrate is discharged directly through the water outlet on the side of the filter plate is open flow.

Hidden flow: The filtrate passes through the corner holes under the filter plate and is discharged from the pipe connected to the end. This liquid discharge method is called hidden flow.

Difference between Open-Flow and Hidden-Stream

1. Model: The models of open-flow filter press and under-flow filter press are different. “A” stands for hidden stream, and “M” stands for open flow. For example, the XMY model is an open-flow filter press, and the XAY is a hidden-flow filter press.

2. Filter plate: The corner holes under each filter plate of the open flow filter press are blocked and have a water nozzle, and the filtered filtrate is discharged directly through the water nozzle, while the corner holes under the filter plate of the closed flow filter press are open, and the filtrate is discharged together from the water nozzle.

3. Filter cloth: The filtrate of the open flow filter press is discharged directly from the faucet, and the corner holes of the filter plate are blocked, so there is no need to open holes under the filter cloth; while the corner holes of the filter plate of the underflow filter press are open to facilitate the discharge of the filtrate, so the filter cloth Holes also need to be drilled.

4. Applications: The open-flow filter press is suitable for most applications such as metallurgy, ore, municipal wastewater treatment etc. Hidden flow (Undercurrent) filter press is suitable for situations where you want to collect the filtrate directly, and it is also suitable for toxic, smelly, volatile, and flammable materials.

5. Operation: When filtering with an open flow filter press, open all the water nozzles under the filter plate, and the filtrate flows out from the water nozzles. This operation is not required for the closed flow filter press.

Besides these differences, all the other points for hidden flow and open flow type are exactly same. They use same control panel, same hydraulic pressing station, and same beam.