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Sharing the cleaning points of the filter element at the core of the blade filter
08-15-2018
Author: Shanghai Shuangqi fluid separation technology Co., Ltd
Click: 2898

Blade filter does not need manual slagging, which reduces the labor force and time, improves the production efficiency, and improves a comfortable and sanitary environment for workers. It is a praiseworthy product.


Working principle of blade filter:

When the filtrate enters the tank through the pump and is full, under the effect of pressure, the solid impurities in the filtrate are intercepted by the stainless steel filter screen, and a filter cake is formed on the filter screen. The filtrate enters the outlet pipe through the filter screen and flows out of the tank through the filter nozzle, so as to obtain the clarified filtrate.


With the increase of filtration time, more and more solid impurities are trapped on the filter screen, which makes the thickness of the filter cake increase continuously, the filtration resistance increase, and the pressure in the tank increase. When the pressure rises to a certain value, it is necessary to discharge slag, stop inputting the filtrate to the tank, and then put in steam to dry the filter cake. Close the steam, open the butterfly valve, start the vibrator, make the filter blade vibrate, and discharge the filter cake on the filter net through the slag discharge port under the tank body.


The blade filter uses gear oil pump or centrifugal pump to pump the white soil mixed liquid mixed by decolorizing pot or mixing tank into the white soil decolorizing filter tank through pipeline and fill it. Under the thrust of the pump, the large particles of white soil are first intercepted on the surface of the filter screen to form a filter cake layer. Under the function of the filter cake layer, the fine particles of white soil are intercepted to form countless The fine channel then intercepts the more fine suspended matter and only allows the clear liquid to pass through. At this time, the filtration starts. In the process of filtration, new clay mixture is pumped in to form a new filter cake layer, so that the filter cake is not blocked. In this way, the material is substantially filtered through the filter cake layer, and the clear liquid flows through the internal channel of the screen to the oil outlet pipe through the oil outlet nozzle, Under the thrust of the pump, it flows through the pipeline to the finished product tank.


With the development of pharmaceutical industry, leaf filter has been widely used in chemical, medical, pharmaceutical, food processing and other fields. Compared with other equipment, the capacity of blade filter is larger, so its efficiency is generally higher. Because of the totally closed design, it will not leak or pollute the environment. In terms of filter plate, it can be pulled out automatically, so it is convenient for workers to inspect and maintain the equipment. Small "body" is full of "energy". I believe that in the future, blade filter will bring convenience to more industries and customers.


The key points of cleaning the core parts of the blade filter are as follows: first, the core part of the blade filter is the filter element, which is composed of special materials and is suitable for damage, so it needs special protection; when the blade closed filter works for a period of time, the blade closed filter element blocks a certain amount of impurities, at this time, the pressure drop increases and the flow rate decreases, so it is necessary to remove the blade closed filter in time The impurities in the filter element shall be cleaned at the same time. When removing the impurities, pay special attention to the precision filter element, which shall not be deformed or damaged. Otherwise, the filter element installed again, the purity of the medium after filtration cannot meet the design requirements; some precision filter elements, such as bag filter element and polypropylene filter element, shall not be repeatedly used. If the filter element is deformed or damaged, it shall be replaced immediately.


The blade filter is suitable for the filtration and separation process of decolorized oil, clarification filtration, crystal in the production of oil, chemical industry, medicine and other industries, especially to solve the problems such as difficult filtration and difficult slag discharge of machine pressed crude oil such as cottonseed, rapeseed and castor in the oil industry.


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