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Cleaning Techniques for Hydraulic Filter Element

The hydraulic filter element is generally used in hydraulic stations, hydraulic/lubrication systems, and requires regular cleaning. After a period of use, the hydraulic filter element will be clogged with contaminants in the hydraulic oil. To ensure smooth filtration of the filter, the following effective cleaning methods for hydraulic filter elements are summarized:


The material of the hydraulic filter element is metal mesh or copper mesh. It can be soaked in kerosene for a period of time, and then washed with an electric fan. This can clean the clogged contaminants inside the filter.


If the material of the hydraulic filter element is fiberglass or filter paper, it cannot be cleaned and cleaning will not work. In this case, a new hydraulic filter needs to be replaced.


Backwash cleaning method for hydraulic filter element


The backwash filter mainly uses a stainless steel filter to physically filter impurities in the water. The filtered residue gradually increases, causing the pressure difference between the front and back of the filter to rise until it is blocked.


When the filter is not working normally due to excessive retention of mechanical impurities, it can be cleaned by backwashing method.


Close one ball valve and open another ball valve normally, and use reverse water inflow to peel off the retained material adhering to the surface of the hydraulic filter and washed away by the backwashing water flow. This is beneficial for removing sediment and suspended solids in the filtering layer, preventing filter material clogging, fully restoring the pollution interception capacity, thereby achieving the purpose of cleaning. The backwash cycle is generally one to four days.


Acid washing cleaning method for hydraulic filter element


In the chemical cleaning method-acid washing method, potassium dichromate or crystal is dissolved in water at 60-80 degrees Celsius, and concentrated sulfuric acid with a concentration of 94% is slowly added to the sufficient amount.


The speed of adding must be slow, and stirred. Add to 1200 milliliters of potassium acid or completely dissolve it. The solution is deep red in color. The speed of adding concentrated sulfuric acid can be accelerated until fully added.


Hebei Paier Filtration Equipment Technology Co., Ltd. is committed to introducing foreign advanced filtration technology and products, and developing our own technology and products based on domestic production practice. Our company's development goal is to build the company into a high-tech company that integrates scientific research, industry, trade, and service with advanced technology and first-class service.


We are members of the material supply network for first-tier enterprises such as China Huadian, China Guodian, Sinopec, and PetroChina. Our current business scope includes petroleum, refining, chemical, pharmaceutical, metallurgy, and electric power. Welcome to consult us.

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No. 185, Gucheng East Road, Chang'an District, Shijiazhuang, Hebei Province
Hebei Paier Filtration Equipment Technology Co., Ltd.
Quick Links
Contact Us
Tel: +86-13903166730 E-mail: hebeipaier@163.com
Add: No. 185, Gucheng East Road, Chang'an District, Shijiazhuang, Hebei Province