What Are The Mainly Types Of Filter Press ?

Vishal Patel
Main Types Of Filter Press
Filter Press – The Introduction

The filter press machine is the equipment used for the separation method to separate solid and liquid. Filter press machine working consumes low energy, low to no human resources required, and high separation effectiveness of liquid filtering out, making it extensively used dewatering technology. Filter press is a widely used dewatering technology in papermaking, pharmaceuticals, food and beverage industries, mining operations, chemical industries, mills, marble, and stone cutting.

There are 4 main parts of a dewatering system machine, namely, Frame, filter plates, manifold, i.e., piping and valves, and filter cloth.

NMP provides a broad range of Filter press manufacturer in gujarat machines with fully customized designs and is a PAN India Dewatering equipment manufacturer. You can plan your system in the desired way.

Press filter machine working is a mechanical procedure for dehydrating a solid that contains liquid. The actual separation occurs on a filter cloth where the filter cake is formed. The liquid then exits the filter plates into the manifold, giving back clean filtered water. A slurry is pumped into the filter machine, and then it is put through high pressure for a dehydration procedure. Later this solid waste is easier to shift or discharge than the entire slurry. The separated clean water can be reused again, leading to high-efficiency procedures. Press machine selection is established based on the quantity of material & various slurry that have to be dewatered.

Coming to 4 main types of dewatering machines, i.e., Auto Filter Press, Semi-Auto Filter Press, Manual Filter Press, and Membrane Filter Press. Moreover, NMP provides all the main types of filter equipment machines to meet the demands of specific applications and industries, ensuring customer satisfaction at par. All of the machines are cost-effective and thus yield higher returns on investment. Also, equipment is designed in a way that requires minimum space installation.

Auto Filter Press

An automatic or fully automatic filter differs from a standard press filter machine. However, it has the same structure, incorporation, construction, and working principle as a conventional filter machine, except that the whole procedure is fully automated. It is fully advanced, logically programmed equipment that requires a single “Start” button to begin the process. It provides a high degree of automation and simultaneously hassle-free operation. Also, fully automated or automated press results in low personnel resources and costs because of the automatic execution. Furthermore, it provides maximum adaptability with various automation options.

Semi-Auto Filter Press

Semi-Auto filter machines require human resources to handle the control panel elements. It has a simple operation mechanism and reduced outsourcing costs. To put it simply, it has a central handle panel where an operator operates each cycle or phase. For safety control management, two-hand control is implemented. The purchasing cost reduces and provides consistent operability with complete protection against mechanical threats due to two-hand control, plate transport, and the eradication of attachment measures. The semi-Auto press machine has a simplified mechanism because of its working principle of two-hand control operation with an emergency stop button. Also, it has a minimal space structure and compact design for a reliable filtration operation.

The main components of the filter machine comprise:

  • Hydraulic Cylinder
  • Plate Shifter
  • Drip Tray
  • Hydraulic Power Pack
  • Electric Panel without PLC

The Semi-Auto Press Filter is specifically used when the space area of a plant or site is bounded or finite. Moreover, it is also used when a high level of automation is not required.

Manual Filter Press

The manual press machine is one of the oldest and most conventional processes or equipment used for solid and liquid separation. It is a very simple and basic form of filtration system. Also, the manual press is very practical, convenient, and user-oriented and is used when at a small level of material separation. When less amount of material has to be handled for filtration, all of the operations performed in the manual filter are done manually and thus require a labor resource to operate the machine.

Manual Press comes in different plate sizes from 305nm to 915nm. They are available with different filter plates, namely, membrane Automatic filter press, recessed filter plates, CGR filter plates, zero leak filter plates, and plate & frame type filter plates.

The manual press does have numerous features such as:

  • Manual Press is handy in size, making it easy to grasp and learn the equipment.
  • The machine is very productive and convenient.
  • Installing manual press results in low maintenance of the equipment
  • Due to its inexpensiveness is a great option for handling and operating a small amount of material.
  • Economical and cost-effective choice.
  • The manual press's operating cost is moderate.
  • The manual press comes with energy-efficient and power-saving advantages.
  • Equipment is effortless to operate.
Membrane Filter Press

Membrane Presses are used for supplementary humidity reduction in the filter cake. For several years, they have been used in mining operations, chemical industries, food processing industries, Dyes & pigments factories, pharmaceuticals, and industrial purposes. It is an incomplete press machine used for solid and liquid separation of several kinds of slurry. Apart from the membrane press being big-budget and expensive, it is a widely and most used dewatering equipment. Though the exterior infrastructure looks familiar to conventional equipment, one of the inner sides of these plates is lined with a plastic or a rubber membrane.

Due to its capacity to attain the least surplus humidity in the filter cake, this membrane press is the most widely used and significant dewatering equipment.

Advantages of the Membrane press are:

  • It has a shorter cycle time of filtration.
  • Highly capable of achieving lower cake moisture.
  • Waste disposal cost remains lower.
  • It requires low and minimal maintenance.
  • The elasticity of the membrane remains high.
  • Reduction in drying cost of the final product.
  • Numerous configurations are available.
  • The membrane press comes with lower power consumption and energy-efficient.

How Does A Belt Filter Press Work?

A belt filter press machine, the most efficient filter press, is used for sludge dehydration by using mechanical pressure in a chemical conditioned slurry.

How To Calculate The Capacity Of The Filter Chamber Of Filter Press Machine?

The separation of solids and liquids is done using a filter press machine. The pressure filtration process is done to divide solids/liquids. A slurry is pushed inside a filter press machine and is dehydrated when subjected to extreme pressure. Filter press machines are manufactured based on the volume and the slurry that needs to be dehydrated.

Filtration Methods In Pharmaceuticals Using A Filter Press Machine

A filter press machine (also known as a Plate-and-Frame Filter press) illustrates the type of filters that evolved in the 1800s. Generally, the type of filter press used today is commonly known as "Chamber filter press," "Membrane filter press," or "Membrane plate filter." Many industries, such as the food, chemical, or pharmaceutical industries, make goods from liquid-solid suspensions or slurries. Solids and liquids are separated in a Filter Press Machine so that the good part of the mixture can be processed, packaged, or delivered.