Detection device for intake resistance of small-flow air filer of universal machine

Abstract

The invention discloses a detection device for intake resistance of a small-flow air filer of a universal machine. The detection device is characterized by comprising a sealing testing fixture, the sealing testing fixture is internally provided with a fixing device for positioning an air filter to be detected, the air filter to be detected can separate the inner cavity of the whole sealing testing fixture into an air inlet chamber and an exhaust chamber, an air inlet and a side gas outlet are respectively arranged at the two sides above the air inlet chamber, the bottom of the exhaust chamber is provided with an air exhaust opening, the air exhaust opening is connected with a negative pressure air source through a pipeline, and the side gas outlet is connected with a differential pressure gauge through the pipeline and then is connected with the pipeline of the air exhaust opening. The detection device for the intake resistance of the small-flow air filer of the universal machine, provided by the invention, can accurately detect the intake resistance of the small air filter and has the advantages of simple operation and high data consistency.

Description

technical field [0001] The invention relates to a detection device for the air intake resistance of an air filter, in particular to a detection device for the air intake resistance of a general-purpose machine with a small flow rate. Background technique [0002] The air intake resistance of the air filter has a great impact on engine performance and fuel consumption. If the intake resistance is too large, the intake air volume will be reduced, and the engine will not get enough air for complete combustion. The mixture will become richer and the fuel consumption will decrease. As a result, the fuel economy will deteriorate, the exhaust smoke will be too large, and the power will be reduced. [0003] The intake resistance of an air filter depends on many variables, including the shape of the piping, the smoothness of the conduit, the type of flexible joint, the size of the tube, the construction of the intake cap, the type of elbow, etc. When a product is manufactured, its i...

AI Technical Summary

Problems solved by technology

[0004] But at present, only the motorcycle or automobile industry has special air filter air intake resistance testing equipment, and these equipment are very large, while the air filter in the general machine industry has various structures and relatively small sizes , the air flow is relatively small (0-48m 3 / h), it is a bit overkill to directly use these large-scale testing equipment, and the most important point is that for general-purpose machine air filters with small flow rates, the detection accuracy of large-scale testing equipment is not high enough, and the data consistency is not high, which cannot meet the requirements of actual testing. need

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