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

A pressurized test and external power supply technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of bubble point error, limited use, inconvenient to carry, etc., and achieve the advantages of convenient use, simple structure and strong applicability Effect

CN109507078AInactive Publication Date: 2019-03-22迈博瑞生物膜技术(南通)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-03-22
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment Construction

[0082] In order to further understand the content, characteristics and effects of the present invention, the following embodiments are exemplified and described in detail below with the accompanying drawings.

[0083] The method for testing the bubble point value of a needle filter under pressure without an external power supply provided by the embodiment of the present invention includes: the syringe is continuously pumped to change the air pressure in the device.

[0084] like figure 1 As shown, the device for testing the bubble point value of a needle filter under pressure without an external power supply provided by the embodiment of the present invention is provided with:

[0085] syringe 1;

[0086] A compression piston 9 containing compressed air is contained in the syringe;

[0087] The front end of the syringe 1 is provided with a first check valve air inlet and a second check valve air outlet;

[0088] The air outlet of the second check valve 8 is communicated wit...