Henan Aite Environmental Protection Equipment Co., Ltd. is a modern joint-stock enterprise that integrates the research and development, production, manufacturing, and consulting services of filter elements and filtration equipment. The XNJ-160 series oil suction filter inside the box is produced by Henan Aite Environmental Protection Equipment Co., Ltd. * * Oil suction filter, oil return filter, double cylinder filter, and pipeline filter. This filter can only be installed on the upper part of the fuel tank, with the suction cylinder submerged below the liquid level in the tank. Its other performance is similar to other series, but without a self sealing valve.

Filtering accuracy - XNJ-160 oil tank suction filter

Filtering accuracy refers to the filtering ability of a filter to remove pollutants from particles of different sizes. It is commonly evaluated using indicators such as filtration accuracy, filtration ratio, and filtration efficiency. Filtering accuracy is divided into four levels: coarse (d ≥ 0.1mm), ordinary (d ≥ 0.01mm), fine (d ≥ 0.005mm), and ultra fine (d ≥ 0.001mm).

Pressure drop characteristics - XNJ-160 oil tank suction filter

The filter in the hydraulic system is a fluid resistance for the oil, so there must be a pressure drop when the oil passes through it. Generally speaking, with a fixed size of the filter element and oil flow rate, the higher the filtration accuracy of the filter element, the greater its pressure drop. With a fixed flow rate, the larger the effective filtration area of the filter element, or the lower the viscosity of the oil, the smaller the pressure drop. The allowable pressure drop of the filter element should be based on the principle of preventing structural damage to the filter element. Generally, the initial pressure drop of aviation and naval filters should not exceed 0.25 MPa; The pressure drop of mechanical filters shall not exceed 0.08 MPa to 0.15 MPa.

Scale absorption capacity - XNJ-160 oil tank suction filter

The problem of the filter intercepting pollutants before the pressure drop exceeds its specified limit is called the pollutant holding capacity, expressed in weight (g). The larger the scale capacity of the filter, the longer its lifespan, so it is an important indicator reflecting the lifespan of the filter. The larger the effective filtering area of the filter, the greater the scale capacity

Characteristics of oil suction filter in XNJ-160 fuel tank
1. Easy installation and connection: This series of oil suction filters is fixed on the cover plate of the fuel tank through the installation flange, and the filter element is directly inserted into the fuel tank, simplifying the system's pipeline, saving space, and making the system layout more compact.

When cleaning or replacing the filter element, unscrew the screws on the installation flange and pull up the installation flange to clean or replace it.

3. Equipped with a filter clogging signaling device: When the filter is clogged by pollutants to a vacuum pressure of -0.018 MPa, the signaling device sends a switch signal (user external electrical signal). At this time, the filter should be replaced or cleaned in a timely manner to avoid oil pump suction and other faults.

4. Equipped with a bypass valve: When the filter element is blocked by pollutants to a vacuum pressure of -0.18MPa, if the machine cannot be stopped immediately for cleaning or replacing the filter element, the bypass valve installed on the upper end of the filter element will automatically open (with an opening pressure of -0.02MPa) to protect the normal operation of the oil pump.

When users choose XNJ series filters, it is necessary to install a vacuum pressure transmitter. When the filter element is blocked by pollutants to a vacuum pressure of -0.018MPa, it should be cleaned or replaced in a timely manner.