A Comprehensive Analysis of the Construction, Operating Mechanism, and Performance Advantages of Plate and Frame Filter Equipment

The plate and frame filter press is a widely used solid-liquid separation technology equipment in chemical, pharmaceutical, food processing, environmental protection and other fields. It achieves efficient, stable and adjustable filtration process through its unique design, especially suitable for occasions requiring high clarification of filtrate or solid materials recovery. Next, Jinchong Enterprise will introduce it in detail from its structure, working principle and performance characteristics.

1. The structure of the plate and frame filter equipment

The plate and frame filter press mainly consists of the following parts:

plates and filter frames: These are the core components of the equipment. Filter plates and filter frames usually appear in pairs. The plates are covered with a filter medium (such as filter), and the frames are used to support the filter cake. The plates and frames form a series of sealed filter chambers.

Clamping device: Used to press all the plates and frames together tightly to ensure that there is no liquid leakage during the filtration process. Common clamping methods include hydraulic clamping and mechanical clamping.

Feed pump and system: Used to uniformly and continuously input the suspension to be filtered into the filter press.

Drainage system: Collect and discharge the filtered clear liquid.

Dis device: Used to remove the filter cake after the end of the filtration cycle. Common discharge methods include manual, mechanical, or pneumatic discharge. Control system: Modern plate frame filter presses are usually equipped with an automated control system, which can achieve precise control and monitoring of the filtration process.

2、Working Principle

Pre-treatment: First, select the appropriate filter medium (filter cloth) according to the material characteristics and it on the filter plate, and arrange the plates and frames in a certain order.

Feeding and Filtering: Start the feed pump, and the suspension is pumped into filter, and the liquid passes through the filter cloth into the filter chamber, while the solid particles are retained on the surface of the filter cloth to form a filter cake.

queezing: When the filter cake in the filter chamber reaches a certain thickness, stop feeding, and squeeze the filter cake to further dehydrate it, and improve the recovery rate of filtrate and the dryness of the filter cake by increasing the pressure (such as hydraulic or pneumatic).

Discharging and Cleaning: After squeezing is completed, the clamping device, remove the filter frames one by one, and remove the filter cake. Then, clean the filter cloth and the plates and frames, and prepare for the next of filtration.

3. Performance characteristics

High-efficiency filtration: By adjusting the filtration area and operating pressure, the plate and frame filter can adapt to viscosities and particle sizes of the suspension, achieving efficient solid-liquid separation.

Good adjustability: The filtration area can be adjusted by increasing or decreasing the number of plates and frames to meet different production needs. The pressure during the pressing process can also be regulated to optimize the dryness of the filter cake.

Easy to operate and maintain Although the initial installation and commissioning may be relatively complex, the daily operation is simple and the maintenance cost is relatively low.

Wide range of applications: Suitable solid-liquid separation in a variety of industries, especially in situations where high-purity filtrate and/or filter cake recovery are required, such as in the pharmaceutical, chemical, and food processing industries.

Environmentally friendly and energy-saving: By reducing the amount of wastewater discharged through an efficient pressing process, while also saving energy consumption it meets the environmental requirements of modern industry.

In summary, the plate and frame filter equipment, with its flexible design, efficient and stable performance, and wide range of applications plays an important role in many fields and is an ideal choice for achieving high-quality solid-liquid separation.