The Filter Press is a filtering device that operates intermittently under pressure. It consists of a pressing part, a thrust plate, a pressing plate, a crossbeam, and a frame.

Plate and frame filter press: It is a filtering unit composed of a filter plate and a filter frame. It can withstand a low filtering pressure (usually less than 0.6Mpa). Each filter press has a different number of plates and frames according to the size of the area. The plate and frame filter press is generally used for filtering materials with less granular objects. It is often used for filtering fine products. Filter paper can be added to the back of the filter cloth for filtration.

Let's talk about the advantages of the plate and frame filter press first:

1. The plate and frame filter press has higher filtration quality and can backwash the filter cake twice, making the filter cake purer.

2. Compared with the Chamber filter press, the filtration space is larger, the filtration efficiency is higher, and the number is faster.

3. Replacing the filter cloth is more convenient and quicker, which effectively provides the utilization rate and improves the filtration efficiency.

4. Long cycle time. For the same size of filter plates, the plate and frame filter press has more space to store filter cakes and longer intermittent cycle time. For example, when filtering the same volume of mixed liquid, the ratio of the cycle times of the chamber filter press to the plate and frame filter press is 4:3. This is the biggest feature of the plate and frame filter press. It is also the reason why it is more expensive.

5. It is lighter than the chamber filter press, which is easy to transport and move.

Chamber filter press: A single filter plate is thicker than a plate-and-frame filter plate, that is, a chamber filter press is composed of two identical filter plates combined to form a filter unit. When the two filter plates are pressed, a filter chamber is formed between them to store granular objects isolated by filter cloth. The feed hole is placed in the center of the filter plate. It is generally used for materials with more granular objects, such as sewage treatment, mineral processing, coal washing and other industries. The characteristics of the chamber filter press are that it is not easy to cause bias pressure in each filter chamber, so that the filter plate is not easy to be damaged. It has fast filtration speed, convenient slag unloading, high filtration pressure, low filter cake liquid content, and can withstand filtration pressure up to 3.0 Mpa. It is easy to realize automatic plate unloading, with a wider range of adaptability, and can manufacture the largest filter press.

Advantages of chamber filter press:

1. The price of chamber filter press is low, generally about 5,000 yuan lower than that of plate-and-frame filter press.

2. The chamber filter press has stable performance, hard wear resistance, and generally lasts one year longer than the plate-and-frame filter press.

3. The automatic filter press improved from the chamber filter press is more regular and unified, and will be promoted by future intelligence.

4. More effective protection of the filter cloth, making its service life longer and automatic cleaning more convenient. However, it is worth mentioning that the replacement of the filter cloth of the chamber filter press is more urgent and complicated.

5. When replacing the filter plate, the standard is unified and no special arrangement is required. .

However, both the plate and frame type and the chamber filter press can realize open flow and undercurrent. According to the filtering method, they can be divided into:

Filtering method: The way the filtrate flows out is divided into open flow filtration and undercurrent filtration. In open flow filtration, a water nozzle is installed on the outlet hole below each filter plate, and the filtrate flows out of the water nozzle directly. In undercurrent filtration, a liquid outlet channel hole is provided below each filter plate, and the outlet holes of several filter plates are connected into a liquid outlet channel, which is discharged from the pipe connected to the outlet hole below the thrust plate.

Washing method: When the filter cake needs to be washed, there are one-way and two-way washing in the current flow, and one-way and two-way washing in the dark flow.

The above is an explanation of the difference between the plate and frame filter press and the chamber filter press. If you have other questions, you can also contact our company to provide you with technical support.