Construction machinery, as an important part of the assembly industry, is an indispensable mechanical equipment for mechanized engineering construction.
The filter (Filter), also known as the filter, it is mainly through the relevant filter paper to filter gas and impurities accessories, usually refers to engine accessories or car filters.
To a certain extent, for construction machinery, the filter plays a vital role, has an important impact on the actual performance of construction machinery, and is more related to the normal operating state of construction machinery.
Then, in order to better ensure the efficient operation of construction machinery, it is necessary to conduct in-depth research on the identification and selection of construction machinery filters. Therefore, the filter most suitable for construction machinery can be selected scientifically and reasonably to improve the operating efficiency of construction machinery and highlight the application value of the filter in construction machinery.
1. The main types of construction machinery filters
At present, the more commonly used filters for construction machinery in China mainly include: filters for air, oil, and diesel. These three types of filters are collectively referred to as three filters for construction machinery.
In addition to the three filters, the commonly used filters also have hydraulic oil filter elements (such as the return oil filter, pilot filter, fine and coarse filter of the housing).
To a certain extent, although they are different types, and there are differences in actual application effects, they all share a common feature, that is, they are all core components used to protect construction machinery and equipment, especially for sports vices. Protection of components.
For example, air filter, its performance has a direct impact on the actual economy and power of construction machinery engines. To a certain extent, the relatively good quality air filter can effectively reduce the ash intake inside the construction machinery engine, meet the actual intake demand of the construction machinery engine, and extend the actual overhaul cycle of the construction machinery engine.
According to the statistics of relevant data, 75% of the wear of construction machinery in the early stage of using the engine is closely related to the filtering effect of the air filter. A large amount of dust is suspended in the air, and the approximate size is 1-1000um. Taking the air paper filter element as an example, the average value of the filter paper of the outer filter is in the range of (32 ± 3) um, and the average value of the filter paper of the inner filter is in the range of (65 ± 3) um. When the dust exceeds 35um, the filter can be used to filter it out, so as to ensure the economy and power of the construction machinery engine.
2. The effectiveness identification and reasonable selection of micro-engineering mechanical filters
Based on the analysis of China’s current construction machinery filter market, the most harmful are some counterfeit construction machinery filter products circulating in the market.
Facing the mixed market of construction machinery filters, the identification of construction machinery filters has increased the difficulty. To a certain extent, these counterfeit construction machinery filters are not substantially different in appearance from the construction machinery filters produced by regular manufacturers. However, in terms of price standards, it is far lower than the prices of construction machinery filters of regular manufacturers, or even about 1/3 of the sales price of construction machinery filters of regular manufacturers.
These counterfeit construction machinery filters are quite different from the actual construction machinery filter standards and requirements in terms of manufacturing materials and processes. The quality is much lower than the filter of construction machinery made by regular manufacturers.
Then, once these counterfeit construction machinery filters are put on the market for use, there will be no obvious problems in the short term, and if over time, their internal problems will gradually appear, affecting the construction machinery engine Power and economy.
Generally good filter elements are always neat, and the color filters of big brands are also relatively white and bright. If the poor filter elements are not porous, the material is yellow, and there is a sign of mildew because of poor storage, because the filter element is placed on the net The water tank is internal, so it seems difficult, and the filter element samples on the market are widely selected, so no problem can be seen.
In addition, based on the actual use of the filter, the core components of the equipment are usually involved, such as the crank connecting rod mechanism inside the engine, the formation of the cylinder liner and the fuel injection pump, as well as the valve components in the hydraulic system, the motor, Hydraulic pumps, etc.
To a certain extent, the filter will directly affect the overall life cycle of construction machinery and equipment. Therefore, it is necessary to strictly control the accuracy of the filter based on the control of pollution and wear, and try to choose a filter with a size that is close to the thickness particles of the dynamic oil film of the actual motion pair of the element. In order to ensure that such high-precision filter internal motors, hydraulic pumps, etc. can extend the actual use cycle, effectively eliminate the problem of hydraulic valve pollution clamping tightness, and effectively ensure the economics and power of construction machinery engines .
Post time: Apr-30-2020