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Membrane filtration device and method

A membrane filtration and air filtration technology, applied in separation methods, chemical instruments and methods, membrane technology, etc., can solve problems such as clogging, lack of membrane filtration device membrane, etc., to prevent damage, keep the membrane unobstructed, and reduce impact. Effect

Active Publication Date: 2017-08-15
ZHEJIANG TAILIN BIOENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the shortcoming of the lack of an effective solution to solve the clogging problem of the filter membrane of the membrane filtration device on-line in real time in the prior art, and provides a membrane filtration device, which realizes real-time The purpose of flushing the filter membrane to keep the filter membrane unblocked

Method used

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  • Membrane filtration device and method

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Effect test

Embodiment 1

[0022] A membrane filter, such as figure 1 As shown, the same below, including a sealed filter cartridge 100, a filter membrane 200 installed on the filter cartridge 100, and a liquid inlet 300, the membrane filtration device described in this embodiment is especially suitable for those that are completely closed or adopt Top-intake air filter devices, especially those whose filter membrane is far away from the air inlet; generally speaking, the filter membrane 200 is installed at one end of the filter cartridge 100, usually at the vertically downward end of the filter cartridge 100, and the filter membrane The outer side of the filter cartridge 200 is also provided with a drain port for removing the filtrate, and the liquid inlet port 300 described in this application is a through hole provided on the wall of the filter cartridge 100 .

[0023] Further, the liquid inlet 300 is arranged on the wall of the filter cartridge 100 close to or very close to the filter membrane 200, ...

Embodiment 2

[0027] The membrane filtration device as described in the above-mentioned embodiment 1 also uses the liquid inlet 300 with a caliber smaller or slightly smaller than the caliber of the discharge port, but increases the flow rate of the liquid inlet 300. 1, the diameter of the liquid inlet 300 is reduced, and a high flow rate is used to flush the filter membrane 200.

Embodiment 3

[0029] For the membrane filtration device as described in the above-mentioned embodiment 2, because increasing the flow rate will cause excessive pressure on the local filter membrane 200, which will affect the service life of the filter membrane 200, thus, the caliber of the liquid inlet 300 can be increased, while maintaining the original On the basis of the constant liquid inlet pressure, the instantaneous flow rate of the liquid flow through the liquid inlet 300 is improved, and compared with embodiment 2, the flow velocity of the liquid flow is reduced, the impact water volume is improved, and the impact force on the filter membrane 200 is reduced. So as to achieve the effect of protecting the filter membrane.

[0030] Further, as a preferred solution, in consideration of the throughput of the filter membrane 200 when filtering, the per unit time throughput of the filter membrane 200 can be improved by increasing the area of ​​the filter membrane 200, and the liquid inlet ...

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PUM

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Abstract

The invention relates to a membrane filtration device for a laboratory, and discloses a membrane filtration device, which includes a sealed filter cartridge, a filter membrane installed on the filter cartridge and a liquid inlet; the liquid inlet is arranged close to or very close to the filter On the filter cartridge wall of the membrane, the opening of the liquid inlet located on the inner side of the filter cartridge wall faces or roughly faces the filter membrane. The liquid flow entering the filter cartridge is sufficient to flush the distance of the filter membrane, and also discloses a use method for achieving better flushing effect by changing the liquid flow. The advantage of the present invention is that it solves the effect of scouring the filter membrane in a sealed cavity, has a simple structure and good scouring effect, and can effectively prevent and reliably achieve the effect of the filter membrane being blocked.

Description

technical field [0001] The invention relates to a membrane filtration device for laboratory use, in particular to a membrane filtration device and method, which realizes the flushing of the filter membrane while entering the liquid by setting a lateral liquid inlet, and the method can also be used for non-free Microbiological limit testing of bacterial products. Background technique [0002] Membrane filtration method is usually used for drug sterility or limit inspection. Sterility inspection method refers to a method to check whether drugs, dressings, sutures, sterile instruments and other varieties applicable to pharmacopoeia require sterility inspection. Generally speaking, the sterility inspection is carried out in a clean one-way flow air area, and the whole process should strictly abide by the aseptic operation to prevent microbial contamination. The cleanliness verification must be carried out for the unidirectional flow air area and the work surface. The sterility...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D61/00B01D65/02B01D53/22
Inventor 叶大林夏信群
Owner ZHEJIANG TAILIN BIOENG