What is the cause of the leak in the High Pressure Membrane Filter Press?

When many people use the High Pressure Membrane Filter Press, they will find that the filter penetrates during filtration. So how can a good filter press penetrate and why the filter press penetrates?
When the filter press is manufactured, the surface of the filter plate is milled by a numerical control milling machine. Before leaving the factory, each filter press will undergo an empty water test. According to the common sense of production, it is impossible to seep the missing questions. But ask what would leak? The leakage is after the customer has installed the filter cloth.
High Pressure Membrane Filter Press
High Pressure Membrane Filter Press
After the new machine leaves the factory and reaches the customer's company, after the user installs the filter cloth, some customers will respond that it is infiltration. So, since no leakage was found when China Filter Press Accessories Factory, then the leakage will be found in the hands of the customer. What is the cause?
At this time we must learn to judge,
First, whether the filter press is compacted, how much the compaction the pressure is, and whether it has reached the operating pressure.
Second, whether the filter cloth is placed flat and there is no foreign matter pressed in. The common foreign matter is the filter cloth binding line.
Third, if the machine is of the undercurrent type, whether the underflow holes of the filter cloth are aligned. If one of the holes is not aligned, it will affect the liquid discharge of the entire machine.
Another reason is that because it is a new filter cloth, the gap between the warp and weft threads of the filter cloth is large. After several uses, the material will block the gap and will not leak.
Next, talk about the flushing and filter cloth calibration of Jack Compacting Filter Press.
During the dewatering process, fine gypsum particles can clog the filter cloth. The filter cloth after the filter cake comes off should be cleaned before and after. After the filter cloth is regenerated, return to the original position and rinse the filter cloth with a cleaning tube. Front; another cleaning tube is used to rinse the other side of the filter cloth. It is installed under the discharge end of the vacuum belt dehydrator. The nozzles are arranged according to the water pressure and flow velocity, the distance between the nozzle and the filter cloth, and the spray angle. The water flow from the nozzle should be fan-shaped, and adjacent fan-shaped spray areas should overlap. The gypsum particles remain in the grooves of the belt and also require rinsing. In order to ensure the moisture content and chloride ion content of the filter cake, a filter cake cleaning device is provided.
Filter cloth correction
The filter cloth calibration system is a pneumatic control system. The system consists of a baffle arm and a pneumatic control valve, an airbag and a rubber correction roller. The arm is always in contact with the filter cloth, and its rotation controls the pneumatic control valve so that one end of the airbag expands at one end and the air contracts at one end. The deviation of the filter cloth (reciprocating movement of the filter cloth) is completed by the correction roller. The self-aligning bearing seat is installed and fixed at one end of the frame, and the other end is connected to the deviation of the airbag and automatically moves to the correct filter cloth. The limit switches are installed on both sides of the vacuum belt dehydrator frame. When the filter cloth is severely deflected, the limit switch will be squeezed to stop the vacuum belt dehydrator.

评论

发表评论

此博客中的热门博文

How To Choose Filter Cloth?

图片
The choice of  filter cloth  is very important for the filtration effect. The filter cloth plays a key role in the use of the filter press. Its performance is good or bad, and the correctness of the selection directly affects the filtering effect. The most common filter cloth currently used is a filter cloth made of synthetic fibers. According to the material, it can be divided into polyester, vinylon, polypropylene, nylon and so on. In order to achieve the interception effect and the filtration speed are ideal, in the selection of the filter cloth, it is also necessary to select according to the particle size, density, chemical composition and filtration process conditions of the slurry. Due to the difference in materials and methods of weaving, the strength, elongation, gas permeability and thickness of the filter cloth are different, which affects the filtering effect. In addition, the filter media also includes cotton woven fabrics, non-woven fabrics, screens, filter ...
阅读全文

Precautions for Using the Plate Frame Filter Press in Summer

图片
In summer, the temperature is high and the humidity is high. Many machines and equipment are overloaded due to overheating of the machine during operation, and the filter press is no exception. When using Plate and Frame Filter Press in summer, it is important to pay attention to the operating state of the plate and frame filter press to prevent damage caused by overload operation from affecting the filter press. So, what should you pay attention to during use?  Plate Frame Filter Press Factory  to explain to you. First, we pay attention to the hydraulic system. Since the equipment will repeatedly pressurize the filter plate during the working process, the hydraulic system will work frequently, withstand the huge pressure on the filter plate, the weather is hot, and the hydraulic device is easily overheated. Since the hydraulic unit itself is a highly enclosed component, some simple cooling methods are not ideal for hydraulic systems. Therefore, when using the Plate and Fra...
阅读全文

What is The Working Principle Of Filter Press

图片
A  Filter Press  is most commonly used to dewater sludge Made from industrial wastewater treatment plants. Filter Press Manufacturers  tell you the first stage of dewatering in a filter press is chemical conditioning. This is normally achieved by dosing a polymer into a mixed sludge storage tank upstream of the filter press. The flocculant will bind the sludge particles to larger flocs that are thicker and easier to dewater from the press. The slurry is then introduced through the center of the press where it fills the chambers between the plates. The pressure forces the liquid through the  Filter Cloth , whilst solids are retained between the plates. The filtrate flows between ridges in the plates to the corners where it discharges. The stages are as follows: 1. The chamber is empty, but has been sealed closed by the hydraulic ram. The press is ready to receive wet solids. 2. The wet solids are fed into the c...
阅读全文