Helium mass spectrographic leak detector for leak detection of air filters

Abstract

The invention relates to a helium mass spectrographic leak detector for leak detection of air filters. The helium mass spectrographic leak detector comprises an operating rack and a gas supply pipeline; a mounting frame is fixedly connected to a top plate of the operating rack, a lift cylinder with downward extending end is fixedly connected to the top of the mounting frame, a lift plate is arranged below the top of the mounting frame, and a guide rod in slide connection with the mounting frame is fixedly connected to the lift plate; a piston rod end of the lift cylinder is fixedly connected with a connecting plate, a fine-tuning cylinder with a downward extending end is fixedly connected between the connecting plate and the lift plate, a piston rod end of the fine-tuning cylinder is connected with a helium gas sealing hood with a downward opening and an internal sensor; a sealing pad which is in clearance fit with the helium gas sealing hood is arranged at the position, on the top plate of the operating rack and under the helium gas sealing hood; one end of the gas supply pipeline is communicated with a helium gas source while the other end thereof is communicated with a gas supply hose, and an inner cavity plug with a center through hole is arranged at the end of the gas supply hose. The helium mass spectrographic leak detector is used for detecting by a dry detection method,has high detection efficiency and is easy to operate.

Description

technical field [0001] The invention belongs to the technical field of filter production equipment, in particular to a helium mass spectrometry leak detector for air filter leak detection Background technique [0002] An air filter is an important component of a car, usually consisting of a square housing and a filter element inside the housing. The air filter is used to filter the dust and impurities contained in the intake air of the engine to reduce the early wear and tear of cylinders, pistons, piston rings, valves and valve seats. The air tightness of the air filter regulator is directly related to the quality of the motor equipment, so the air tightness detection of the automotive filter regulator is a very important technical field. [0003] The existing filter detection equipment mainly puts the filter to be tested into water, then fills the inner cavity with gas and checks whether there are bubbles in the water. It is also necessary to dry the filter, and the oper...

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Problems solved by technology

[0003] The existing filter detection equipment mainly puts the filter to be tested into water, then fills the inner cavity with gas and checks whether there are bubbles in the water. It is also necessary to dry the filter, and the operation process is cumbersome; in addition, when water enters the filter, short-term drying does not necessarily completely dry the water stains in the filter, which affects the use of the filter.

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