WU series oil suction filter hydraulic pump oil suction port filter

The WU series oil suction filter is a basic pre purification device designed specifically for the oil suction port of hydraulic pumps. It adopts a low resistance direct insertion installation structure that is fully immersed in the oil tank. The entire cylinder is completely placed below the oil level of the oil tank, with only the top connecting end cover exposed to the oil tank cover plate, directly docking with the inlet of the hydraulic pump oil suction pipeline. It completes the first stage of large particle impurity interception before the oil enters the hydraulic pump, preventing hard pollutants in the oil tank from being sucked into the pump body and causing damage from the source. It is widely used and easy to maintain as the first pollution protection component in various conventional hydraulic systems, and is suitable for the standardized installation requirements of the oil suction end of most general hydraulic stations.

The WU series oil suction filter adopts a low resistance composite filter screen structure with multiple layers of stainless steel woven mesh. The outer layer is a high-strength coarse protective net to resist the impact of large-sized hard objects, the middle layer is a rigid support skeleton to prevent the filter screen from being compressed and deformed, and the inner layer is a precision filter layer with specified accuracy. On the premise of ensuring extremely low oil resistance and completely avoiding the risk of hydraulic pump suction, it efficiently intercepts large-sized solid impurities in the oil tank; The top is equipped with a convenient connection end cover, which is matched with a sealing rubber ring to achieve complete sealing at the fuel tank interface, preventing external air from seeping into the oil through the installation gap; Equipped with a built-in one-way valve structure, it can automatically close the oil suction path when removing the filter element for maintenance, preventing a large amount of oil from flowing back and overflowing from the fuel tank; A dedicated anti detachment cover is installed at the bottom to prevent the filter screen from loosening and shifting under high flow impact. The overall structure has no unnecessary complex components and has strong long-term stability during operation.

The WU series oil suction filter is widely suitable for pre purification scenarios at the oil suction end of various general industrial hydraulic systems. It can be used in conventional working conditions such as ordinary machine tool hydraulic stations, light industry automation equipment hydraulic circuits, small engineering machinery accessory hydraulic systems, mining equipment lubrication hydraulic units, agricultural machinery hydraulic power stations, and hydraulic control oil circuits of conveying equipment. It is particularly suitable for general hydraulic equipment with high cost control requirements and moderate operation and maintenance frequency. It can effectively prevent large-sized hard particles from entering the interior of hydraulic pumps, greatly reduce the probability of abnormal wear of core moving parts such as pump gears and blades, and extend the overall service life of hydraulic pumps.

Compared to conventional oil suction filters of the same type, the WU series oil suction filter adopts a mesh filter structure with a large flow area, and the initial pressure difference is much lower than that of the same precision folding filter element filter, avoiding common faults such as hydraulic pump suction and cavitation at the root; The filter screen of the all stainless steel woven mesh can be repeatedly cleaned and reused, without the need for frequent replacement of new filter elements, greatly reducing long-term usage costs; The overall use of standard universal threads or flange interfaces can directly replace the vast majority of universal oil suction filters of the same specifications on the market, without the need to modify the original fuel tank cover plate and oil suction pipeline, with strong adaptability; Minimalist modular structure design, no special tools are required for disassembly and maintenance. Ordinary operation and maintenance personnel can quickly complete filter cleaning or replacement operations by themselves, greatly reducing downtime for maintenance.

When the hydraulic pump is running, there is a noticeable suction noise. First, check whether there are a large number of impurities adhering to the surface of the filter screen causing blockage. Remove the filter screen, clean the surface of the pollutants deposited, and reinstall it to eliminate the noise; During operation, the oil absorption flow rate is significantly lower than the rated value. Check whether the filter screen is completely covered by gum impurities in the flow channel, and use a special cleaning agent to thoroughly clean the residual gum in the pores of the filter screen. The oil flow capacity can be restored to the design standard; If there is oil leakage at the installation position, check whether the sealing rubber ring at the end cover has aged, deformed or installed incorrectly. Replace it with a new seal of the same specification and tighten the end cover fasteners evenly to restore the sealing performance; The filter screen has become loose and displaced during operation. Check if the bottom cover is not tightened properly, re lock the bottom cover to confirm that the anti detachment structure is in place, and then restore normal operation.