Porous filter cartridge

A filter cartridge and filter technology, which can be used in ultrafiltration, sampling devices, instruments, etc., can solve the problems of liquid residue, pollution, difficult measurement, etc., and achieve the effect of effective filtration and extraction and economic advantages.

Inactive Publication Date: 2010-12-22
KURASHIKI BOSEKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The problem with the conventional porous filter cartridge disclosed in Patent Document 2 is that it requires an increase in the amount of liquid due to increased pressure resistance, and it is prone to problems of liquid residue and contamination, making effective measurement difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0068] figure 1 is a perspective view of a porous filter cartridge of the present invention, figure 2 yes figure 1 An exploded view of a porous filter cartridge.

[0069] Such as figure 1 and 2 As shown, the porous filter cartridge of the first embodiment mainly includes a cylinder portion 3 , a cover 5 and a porous filter sheet 7 .

[0070] The barrel portion 3 is made of an insert-injection moldable resin material such as polypropylene, polystyrene, polycarbonate, or polyvinyl chloride. The barrel 3 has an inlet 19 at its cylindrical upper part and a cover 21 connected to the inlet 19 by a hinge 23 . The barrel portion 3 is composed of a large diameter portion 11 , a small diameter portion 13 , and a fusion portion 17 fused to the cap 5 located below the small diameter portion 13 .

[0071] The cover 5 is a cylinder with a bottom, and similar to the barrel 3 , the cover 5 is also made of resin material that can be insert-molded such as polypropylene, polystyrene, poly...

no. 2 approach

[0090] A second embodiment of the porous cartridge of the present invention is described below.

[0091] The porous filter cartridge of the second embodiment is identical in structure to the first embodiment except that the shapes of the intersecting ribs 35 and the auxiliary ribs 37 and 39 are different.

[0092] Figure 8 is a partially cutaway perspective view of a cover for the second embodiment (equivalent to Figure 5 ). Figure 9 is a cross-sectional view of the cover taken along the line I-I (equivalent to Figure 4 ).

[0093] Such as Figure 8As shown, in the cover of the second embodiment, the cross-shaped rib 35, the auxiliary ribs 37 and 39 are formed so that they have a series of protrusions 49 bulged toward the porous filter side on the top surface. The height of each protrusion 49 is smaller than the thickness of the tops of the cross-shaped rib 35 and the auxiliary ribs 37 and 39 . Each protrusion has a smooth curve. Although in the example shown each r...

Embodiment 1

[0166] The effect of the porous filter cartridge of the present invention was tested. The results obtained are described below. Burst resistance test

[0167] Example 1 is a porous filter cartridge with 6 intersecting ribs. The connecting portion of the cross-shaped rib has a convex surface. The diameter of the outlet opening of the cap is 2 mm. Comparative Example 1 is a porous filter cartridge different from Example 1 in that the connecting portion of the rib has a flat top surface. Comparative Example 2 is a porous filter cartridge different from Example 1 in that cross-shaped ribs are not formed. These filter cartridges were placed in a centrifuge (MX-300, available from Tomy Seiko Co., Ltd.), and rotated with gradually increasing rotation speed (8000 rpm and 15000 rpm), and the rupture of the porous filter discs in these filter cartridges was detected. The results are shown in Table 1 below. The results shown are the number of times no rupture occurred out of 10 tes...

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Abstract

This aims to provide a porous filter cartridge which is hardly contaminated, which is advantageous in the cost aspect, and which can perform efficient filtration and extraction without any breakage. The porous filter cartridge includes a porous filter retained in the bottom and inside of a bottomed cylindrical cap 5 having a discharge opening 29 formed in the center of the bottom. A plurality of ribs 35, 37 and 39 for supporting the porous filter are erected radially around the discharge opening 29 in the bottom of the cap 5. At least any of those ribs is connected across the discharge opening 29 at the central portion of the discharge opening 29, and a protruding face 41 protruding toward the porous filter is formed on the crest face of a connected rib portion 43.

Description

technical field [0001] The present invention relates to a porous filter cartridge having a bottomed cylindrical cap and a porous filter plate held at the bottom of the cap. Background technique [0002] Porous filter discs are widely used in research and analysis in laboratories and factories to filter liquids or to separate and purify specific substances in liquids. For example, a porous filter plate is used in such a way that it is held in the liquid flow by being held between two parts each having a liquid passage. Since this type of porous filter is often used in precise experiments and measurements, the porous filter must be clean. That is, porous filters are typically designed to be used once and thrown away. Therefore, from the standpoint of cleanability and user convenience, it is convenient to provide the porous filter in the form of a filter cartridge through which liquid can pass directly. [0003] When using filter cartridges with porous membranes to filter or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D63/08B01D61/14B01D61/18G01N1/10
CPCG01N1/405B01D69/10
Inventor 繁定启司藤原盛男山田卓二稻名克哉
Owner KURASHIKI BOSEKI KK
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