Device for measuring permeability of filter

Abstract

The invention discloses a device for measuring permeability of a filter and belongs to the fields of water environment, traffic, chemistry and the like. The device comprises a galvanostat, a galvanostat connecting pipe, a pressure stabilizing tank, a pressure gauge, a valve, a sample container and a sample connecting pipe. The test process is completed on weighing equipment; before the test is started, the valve is closed, flowing water flow is introduced above the galvanostat until water flows out of an overflow port and the water flow is stable, and at the moment, the total weight of the device before the test is recorded; the valve is opened, the water flow starts to uniformly flow into the pressure stabilizing tank, and the reading of the pressure gauge and the test starting time are recorded; the test is ended when the liquid level of the pressure stabilizing tank rises to the lower edge of the glass tube, connected with the pressure stabilizing tank, of the galvanostat, and the total weight of the device and the test ending time are recorded; the air volume is calculated according to the weight difference, water and the air density under the corresponding pressure, and then the permeability index of the filter is calculated. The constant water flow device is adopted to replace a conventional air source method, so that the pressure is more constant and controllable; and the accuracy of measuring the permeability of the filter is improved.

Description

technical field [0001] The invention relates to a filter permeability measuring device, which belongs to multiple technical fields such as water environment technology, transportation, and chemistry. Background technique [0002] Filters are widely used in many fields. The permeability reflects the compactness of the filter and is one of the most important indicators of the filter. At present, the commonly used permeability measurement devices mostly use sophisticated air flow meter measurement test process However, the stability of the current air flowmeter is poor, the accuracy is insufficient, and the air source pressure is affected by many factors, and it is generally not stable enough during the test process, which affects the determination of the filter permeability index. The existing There is still a lot of room for improvement in the accuracy of the test device. [0003] Now set forth the innovation point of the present invention as follows: [0004] The invention...

AI Technical Summary

Problems solved by technology

[0002] Filters are widely used in many fields. The permeability reflects the compactness of the filter and is one of the most important indicators of the filter. At present, the commonly used permeability measurement devices mostly use sophisticated air flow meter measurement test process However, the stability of the current air flowmeter is poor, the accuracy is insufficient, and the air source pressure is affected by many factors, and it is generally not stable enough during the test process, which affects the determination of the filter permeability index. The existing There is still room for improvement in the accuracy of the test device

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