Device and method for pressurized testing of bubble point value of needle filter without external power source

Abstract

The invention belongs to the technical field of testing needle filters, and discloses a device and a method for pressurized testing of the bubble point value of a needle filter without an external power source. The device comprises an injector, non-return valves, a three-way valve, a needle filter, a pressure-resistant hose, a pressure gauge and a beaker with water, wherein the top end of the injector is connected with two non-return valves, the outlet of one non-return valve is connected with a plastic injector, the inlet of another non-return valve is connected with a plastic injector, the outlet of the second non-return valve is connected with the inlet end of the three-way valve, one outlet of the three-way valve is connected with the pressure gauge, another outlet of the three-way valve is connected with the Luer female lock of the needle filter, the Luer male lock of the needle filter is connected with the pressure-resistant hose, and the other end of the pressure-resistant hoseenters the water in the beaker with water. The device disclosed by the invention has a simple structure, has no need of an external power source for pressurizing, has strong applicability in the openair, and only needs to be pressurized manually.

Description

technical field [0001] The invention belongs to the technical field of testing the bubble point value of a needle filter, and relates to a device and method for testing the bubble point value of a needle filter under pressure without external power supply. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] A device for testing the bubble point value of a needle filter under pressure without an external power supply belongs to the technical field of testing the bubble point value of a needle filter. The existing method for detecting the bubble point value of a needle filter requires an external power supply and an external compressed air source. The user site often does not have this condition and can not well meet the user's needs. [0004] To sum up, the problems existing in the prior art are: [0005] An external power supply must be added, which cannot meet the needs of users. [0006] It is not ea...

AI Technical Summary

Problems solved by technology

[0005] An external power supply must be added, which cannot meet the needs of users

[0006] Not easy to carry, you must use an external compressed air source

[0007] In the prior art, the real-time pressure accuracy of the pressure sensor to detect the syringe filter is poor; it brings a large error to the detection of the bubble point value, resulting in the product quality cannot be guaranteed in the manufacture of the syringe filter, and the use is limited

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