C151431 MAN brand construction machinery filter element

Working principle of engineering machinery filter element

Filtration principle: Engineering machinery filter element mainly uses physical interception for filtering. Taking the common oil filter element as an example, when the oil pump delivers the oil to the filter element, the oil enters from the inlet of the filter element. Since the oil has a certain pressure and fluidity, it will flush the check valve inside the filter element. Then the oil enters the filter medium of the filter element. The filter medium is usually made of filter paper, filter screen or other porous materials. These materials have a certain pore structure, and the size of the pores is designed according to different filtration accuracy requirements. When the oil passes through the filter medium, the impurity particles (such as dust, metal debris, carbon particles, etc.) in it cannot pass because their size is larger than the pores of the filter medium, and are thus intercepted on the surface or inside of the filter medium. The clean oil after filtration passes through the center tube of the filter element, flows out from the outlet, and returns to the lubrication system of the engineering machinery to continue to play the role of lubrication, cooling, cleaning, etc.

Working principle of special structure:

Air filter element: Engineering machinery will inhale a large amount of air when working, and the air contains impurities such as dust and sand. Air filters usually use multi-stage filtration. First, pre-filtration methods such as inertial separation and cyclone centrifugal separation are used to remove most of the large particles in the air. Then, the pre-filtered air enters the main filter for further fine filtration, and the main filter can filter out smaller particles. Some air filters also have safety filters (secondary filters). When the main filter is replaced or fails, the safety filter can continue to filter and prevent impurities from entering the engine.

Hydraulic oil filter: In the hydraulic system of construction machinery, the hydraulic oil needs to be kept clean to ensure the normal operation of the hydraulic system. The working principle of the hydraulic oil filter is similar to that of the engine oil filter. The hydraulic oil flows through the filter under the action of the hydraulic pump, and the impurities are intercepted by the filter medium of the filter, and the clean hydraulic oil returns to the hydraulic system. Due to the high working pressure of the hydraulic system, the hydraulic oil filter needs to have high strength and pressure resistance.

Advantages of construction machinery filter:

High filtration efficiency: It can effectively remove various impurities generated during the operation of construction machinery, such as dust, metal debris, oil stains, etc., to ensure the cleanliness of the liquid or gas in the system. For example, a high-quality air filter element can ensure that the air entering the engine is almost free of impurities, reduce engine wear, and improve engine performance and service life.

Good compatibility: It can be customized according to different engineering machinery models and working environments, and has good compatibility with various engineering machinery engines, hydraulic systems and other components, and can meet the filtering needs of different engineering machinery.

Long service life: It adopts high-quality materials and advanced manufacturing processes, has high wear resistance, corrosion resistance and high temperature resistance, can work stably for a long time in the harsh working environment of engineering machinery, reduces the frequency of filter element replacement, and reduces the cost of use.

Compact structure: Reasonable design, small size, will not take up too much space, easy to install in the limited space of engineering machinery, and will not affect the overall structure and layout of engineering machinery.

Easy to maintain: Easy to replace, generally only simple tools and operations are needed to complete the replacement of the filter element, which greatly saves maintenance time and cost.

Application field of engineering machinery filter element:

Construction field: It is widely used in various construction machinery such as cranes, excavators, loaders, concrete mixers and other equipment. These machines will generate a lot of dust, oil and other impurities during the construction process. The filter element can effectively filter these impurities to ensure the normal operation of the machinery. For example, the hydraulic system of the excavator needs to use a hydraulic oil filter to filter impurities in the hydraulic oil to prevent hydraulic system failure; the engine of the crane needs to use an air filter to ensure the cleanliness of the air entering the engine and improve the performance and life of the engine.

Mining field: The working environment of mining machinery is harsh, with a lot of impurities such as dust and ore particles, and the filtering performance of the filter element is high. For example, mining trucks, rock drills, crushers and other equipment all need to use filter elements to filter air, fuel, hydraulic oil, etc., to reduce mechanical wear and failure, and improve the reliability and service life of the equipment.

Road construction field: In road construction machinery such as rollers, pavers, milling machines, etc., filter elements play a key role. These machines will be exposed to a large amount of impurities such as dust and asphalt during the construction process. The filter element can effectively filter these impurities to ensure the normal operation of the machinery and the construction quality.

Agricultural field: Agricultural machinery such as tractors, harvesters, rice transplanters, etc. also need to use filter elements. During farmland operations, agricultural machinery will inhale a large amount of dust, crop debris and other impurities, which will affect the performance and life of the engine, so air filters and fuel filters are needed for filtration.

Industrial field: In some industrial production processes, engineering machinery is also used, such as forklifts and transporters in factories. These engineering machinery also need to use filters to filter air, fuel and hydraulic oil to ensure the normal operation of the machinery and the smooth progress of production.