How to select factors for the Hydraulic filter

The filter selection factors

Filter fineness
All hydraulic and lubrication systems are likely to have leaked to him. Studies like those conducted by the Oklahoma State University, the U.S. Navy, SAE, ASME, Fluid Power Research Center, and many others found that the cleaning of oil-hydraulics, longer than the previous system. The degree of filtering should be directly related runnability.

The selection of the filter must be carefully considered, the following conditions, including:

* Beta-ratio – the ratio of pollution in the filter, through pollution, through the filter (link to the detailed Beta ratio mentioned above)
* Pressure Drop – All system components to produce a resistance to the flow of oil through them. This is the pressure drop. The pressure drop is a network for the flow of oil to the filter input port to the exit door. In all filters, this will include a pressure drop across the housing and the element. The pressure drop varies with flow rate, viscosity and density of the liquid. If you have a selection of filters, the maximum allowable pressure drop of the system into account: the operating temperature, the highest and the lowest temperature and dirty configuration element of the bypass valve. It must be ensured in the design of a filter in a circuit or battery circuit cylinder with the size of the pressure drop at peak flow.

* Pressure System – the return filter must withstand pressure in the return line, while pressure filter must withstand the maximum system pressure. These pressure spikes are induced by operation. Housing, bypass valves, and the item must resist fatigue cycling and the tides.
* Temperature – Effect of temperature of the viscosity (flow resistance) of the liquid. Filters are selected and average ambient cold temperatures and the temperature of the system.
*  Other factors – the environment in which teamwork is very important, especially if the dish into the atmosphere. It is very common to install Beta 3> 1000 air vents in the tank is every possibility of penetrating foreign, particulate matter into the reservoir.
* With the increasing emphasis on preventing machine downtime, the need for higher quality development. Since the pumps and valves razor clearnances the scale 1 to 5 microns, it is easy to understand the need for clean oil. To meet this demand will be the filters of the filtering of up to 1 (one) micron level (Beta 1> 1000), with a long life and low pressure drop can.

Tips for selecting FILTER

1. The higher the proportion of beta (link to the part of the relationship Beta here), the faster the pollutants removed from the system.
2. The smaller the initial size of the clean pressure drop, the longer it takes the item in operation.

Recirculation systems filtering – With more and more “on time”, which is required by production managers, “dead time” for the regular maintenance of increasingly scarce. To allow continuous operation of equipment, even though he can use the dirty filter service is a re-filter systems are installed throughout the time of production machinery.

These inexpensive devices are screwed to the machine, continuously filtering oil tank. If an item is dirty, set the MACHNE production specs, while independent determination of the return filter may be closed to change the dirty element.

Proposals Filter Placement

* Solenoid valves controlled by hydraulic system. 1800 psi, 30 gpm
or the assembly line pressure after the pump-filter system installed in the pressure. (Beta 3> 200)
or the assembly line back in the return line filter is installed to the tank before the tank. (Beta 3. 200)
* Breathing air tank (Beta 1> 200)
or servo and solenoid valve-controlled hydraulic system.
or the assembly line pressure after the pump-filter system installed in the pressure. (Beta 1> 200)
overlooked or not the remote control to pressure filters installed directly to the servo valve. (Beta 1> 1000)
or the assembly line back in the return line filter is installed to the tank before the tank. (Beta 3. 200)
or breathing air reservoir (Beta 1> 200)
* Closed Loop Hydrostatic Transmission Hydraulic System
* or high pressure (6000 psi as a rule), filters, backflow pressure directly on the two main pressure and flow circuits intalled. (Beta 3> 200).
or breathing air reservoir (Beta 1> 200)
* Bearing lubrication circuit (turbines, paper machines, etc.) (120 gpm, 45 psi),
* or High-Flow, Pressure Duplex Filters online (Beta 5> 200)
Reservoir or air vents. (Beta 3> 200)