Dry type air filter

Abstract

The invention provides a dry type air filter, and relates to the field of automobile auxiliary components. The dry type air filter comprises a shell, wherein a filter element and a back flushing device are arranged in the shell, an air storage cylinder and a control device are connected outside the shell, and the interior of the shell is divided into a first-stage air inlet cavity, a second-stageair inlet cavity and a clean air cavity which are sequentially communicated through partition plates with holes; a first-stage filter element is arranged in the first-stage air inlet cavity, and a second-stage filter element is arranged in the second-stage air inlet cavity; and the air outlet end of the back flushing device extends into the second-stage air inlet cavity and faces the first-stage air inlet cavity. According to the dry type air filter, two-stage dry type filtering is adopted, the structure is compact, installation and replacement are convenient, the filtering effect is good, theinstallation adaptability is high, maintenance is convenient, environmental pollution is effectively reduced, the maintenance period and the labor intensity of workers on the filter elements are reduced, and the service life of core key components of related vehicles and equipment is prolonged.

Description

technical field [0001] The invention relates to the technical field of automobile auxiliary parts, in particular to a dry air filter. Background technique [0002] For dump trucks, tractors, trucks and other vehicles that often work in dusty environments, air filters are usually installed to purify the internal combustion engine or the air inhaled by the engine to protect the normal operation of the engine. [0003] The air filter installed in the existing car mainly includes the following four forms: [0004] (1) Air filter with dry paper core, the maintenance of this equipment is very laborious, the filter element must be disassembled, gently tap on the ground or use compressed air to blow back, and the dust adhered to the outer surface of the filter paper will be blown away from the filter element , to achieve the effect of clean and breathable filter element, if you don’t pay attention, the paper filter element will be damaged, and the use of compressed air to blow back...

AI Technical Summary

Problems solved by technology

The coarsely filtered air inside the filter enters the filter element (paper) for fine filtration, and then enters the engine to do work. Due to the large gap between the metal mesh or wire, the fine dust cannot be filtered out, and the filtering effect is not good.

In addition, it is very troublesome to maintain. The metal wire or metal mesh must be disassembled, cleaned with washing oil, and replaced with new lubricating oil. The air intake resistance is relatively large.

If the matching is improper, it is easy to hold the car, and the waste oil and sludge that are frequently replaced will cause serious secondary pollution to the surrounding environment and increase maintenance costs;

[0006] (3) The wet and dry filters are used in series, the filtering effect is slightly better, but the oil stains in the wet filter will adhere to the dry paper core, causing the paper core to be unable to be cleaned and maintained. Can be replaced, the cost of maintenance is higher;

[0007] (4) The dry-type air purification device is refitted in series outside the air filter of the original equipment or vehicle, as an auxiliary filter, with the function of automatic dust removal and ash removal, but the air intake resistance is greatly increased, and the integration of the device is not enough, especially The reverse blowing device is improvised by borrowing non-professional parts, the adaptation of different equipment is poor, and it does not have the ability to invest in mass production

[0008] No matter which one of the above three types of filters (1) (2) (3) is used, it needs to be maintained in time. In an environment with too much dust, it needs to be maintained once a day or eight hours, otherwise it will cause the engine or equipment to suck air. Unsmooth, reduced engine power, black smoke, increased lubricating oil and fuel consumption

If there is a slight powder leakage of the filter element, the dust will enter the engine and cause even greater losses. The engine will have to be overhauled once a year, which will have a great impact on the service life of the engine, and the breakdown, maintenance costs and fuel will also increase accordingly. The workload of the maintenance workers is greatly increased, and the compressed air of the original car is used to blow the air filter during maintenance, which wastes energy and pollutes the environment

The above (4) filter has automatic dust removal effect, but the integration is too poor to modify the original oil bath and desert air filter, which will increase the air intake resistance of the original vehicle or equipment, and cause air intake to key equipment such as the engine Influence, reduce the effective use of engine power

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