The installation method of hydraulic filter element and the correct use of hydraulic oil filter element:
1.Before replacing the hydraulic oil filter element, drain the original hydraulic oil in the box, check the oil return filter element, the oil suction filter element and the pilot filter element for three types of hydraulic oil filter elements to see if there are iron filings, copper filings or other impurities. The wave pressure element where the oil pressure filter element is located is faulty. After the overhaul is eliminated, clean the system.
2.When replacing hydraulic oil, all hydraulic oil filter elements (oil return filter element, oil suction filter element, pilot filter element) must be replaced at the same time, otherwise it is equivalent to not changing.
3.Identify the hydraulic oil label. Do not mix hydraulic oils of different labels and brands, which may cause the hydraulic oil filter element to react and deteriorate and produce purple-like substances.
4.Before refueling, the hydraulic oil filter element (oil suction filter element) must be installed first. The nozzle of the hydraulic oil filter element directly leads to the main pump. The entry of impurities will accelerate the wear of the main pump, and the pump will be hit.
5.After adding oil, pay attention to the main pump to exhaust air, otherwise the whole vehicle will not move temporarily, the main pump will make abnormal noise (air noise), and the cavitation will damage the hydraulic oil pump. The air exhaust method is to directly loosen the pipe joint on the top of the main pump and fill it up directly.
6.Regularly do oil testing. The wave pressure filter element is a consumable item, and it needs to be replaced immediately after it is usually blocked. 7. Pay attention to flushing the system fuel tank and pipeline, and pass the fueling device with filter when refueling.
7. Do not let the oil in the fuel tank come into direct contact with the air, and do not mix old and new oil, which is helpful to prolong the service life of the filter element.
8.For the maintenance of the hydraulic filter element, it is an essential step to perform regular cleaning work. In addition, if it is used for a long time, the cleanliness of the filter paper will be reduced. According to the situation, the filter paper should be replaced regularly and appropriately to achieve better Filtering effect, and then if the model equipment is running, do not replace the filter element.
Filter Requirements:
There are many types of filters, and the basic requirements for them are: for general hydraulic systems, when selecting filters, the particle size of impurities in the oil should be considered to be smaller than the gap size of hydraulic components; for follow-up hydraulic systems, the filter should be selected. High precision filter. The general requirements for filters are as follows:
1)There is enough filtration accuracy, that is, it can block impurity particles of a certain size.
2)Good oil-passing performance. That is, when the oil passes through, in the case of a certain pressure drop, the amount of oil passing through the unit filtration area should be large, and the filter screen installed at the oil suction port of the hydraulic pump should generally have a filtration capacity of more than 2 times the capacity of the hydraulic pump.
3)The filter material should have a certain mechanical strength to prevent damage due to oil pressure.
4)At a certain temperature, it should have good corrosion resistance and sufficient life.
5)Easy to clean and maintain, and easy to replace the filter material.
Functions Of The Hydraulic Filter：
After the impurities in the hydraulic system are mixed into the hydraulic oil, with the circulation of the hydraulic oil, it will play a destructive role everywhere, seriously affecting the normal operation of the hydraulic system, such as making a small gap between the relatively moving parts in the hydraulic components (measured in μm ) and the throttling holes and gaps are stuck or blocked; destroy the oil film between the relatively moving parts, scratch the surface of the gap, increase the internal leakage, reduce the efficiency, increase the heat, aggravate the chemical action of the oil, and make the oil deteriorate. According to production statistics, more than 75% of the failures in the hydraulic system are caused by impurities mixed in the hydraulic oil. Therefore, it is very important for the hydraulic system to maintain the cleanliness of the oil and prevent the pollution of the oil.
Where Hydraulic Filter Used For:
①Hydraulic filters are used anywhere in a hydraulic system particle contamination is to be removed. Particle contamination can be ingested through the reservoir, created during the manufacture of system components, or generated internally from the hydraulic components themselves (especially pumps and motors). Particle contamination is the primary cause of hydraulic component failure.
②Hydraulic filters are used in three key locations of a hydraulic system, depending on the required degree of fluid cleanliness. Nearly every hydraulic system has a return line filter, which traps particles ingested or generated our in the hydraulic circuit. The return line filter traps particles as they enter the reservoir, providing clean fluid for reintroduction into the system.
The three main functions of the hydraulic filter in the hydraulic system:
A.Impurities generated during the working process, such as the debris formed by the hydraulic action of the seal, the metal powder produced by the relative wear of the movement, the colloid, asphaltene, and carbon residue produced by the oxidative deterioration of the oil.
B.Mechanical impurities still remaining in the hydraulic system after cleaning, such as rust, casting sand, welding slag, iron filings, paint, paint skin and cotton yarn scraps;
C.Impurities entering the hydraulic system from the outside, such as dust entering through the fuel filler port and dust ring;
Hydraulic filter tips:
There are many ways to collect pollutants in fluids. Devices made of filter materials to capture pollutants are called filters. Magnetic filters that use magnetic materials to adsorb magnetic pollutants are called magnetic filters. In addition, there are electrostatic filters, separation filters and so on. In the hydraulic system, any collection of pollutant particles in the fluid is collectively referred to as a hydraulic filter. In addition to the method of using porous materials or wound fine gaps to intercept pollutants, the most widely used hydraulic filters are magnetic filters and electrostatic filters used in hydraulic systems. Function: The function of the hydraulic filter is to filter various impurities in the hydraulic system.
Hydraulic filter tips:
There are many ways to collect pollutants in fluids. Devices made of filter materials to capture pollutants are called filters. Magnetic filters that use magnetic materials to adsorb magnetic pollutants are called magnetic filters. In addition, there are electrostatic filters, separation filters and so on. In the hydraulic system, any collection of pollutant particles in the fluid is collectively referred to as a hydraulic filter. In addition to the method of using porous materials or wound fine gaps to intercept pollutants, the most widely used hydraulic filters are magnetic filters and electrostatic filters used in hydraulic systems. Function: The function of the hydraulic filter is to filter various impurities in the hydraulic system.
The working principle of hydraulic oil suction filter：
The water to be treated by the hydraulic oil suction filter enters the body from the water inlet, and the impurities in the water are deposited on the stainless steel filter screen, resulting in a pressure difference. The pressure difference between the inlet and outlet is monitored by the differential pressure switch. When the pressure difference reaches the set value, the electric controller sends a signal to the hydraulic control valve and drives the motor, which triggers the following actions: the motor drives the brush to rotate, cleans the filter element, and opens the control valve at the same time. For sewage discharge, the entire cleaning process only lasts for tens of seconds. When the cleaning of the self-cleaning pipeline filter is completed, the control valve is closed, the motor stops rotating, the system returns to its initial state, and the next filtration process begins.
Post time: Oct-31-2022
