JPS605210A - Filter element - Google Patents

Abstract

PURPOSE:To make it possible to easily perform re-washing, by making it possible to visually confirm the washing degree of the surface of a filter material in the secondary side thereof from which a filtered fluid is flowed out. CONSTITUTION:A high viscosity fluid flows from the central part of a filter element 21 toward the outer peripheral part thereof and a solid particle or gel like substance is filtered and separated by a porous filter material main body 24 constituting the filter element. The high viscosity fluid passing through the filter element advances along the flowline constituted of the gap between a casing 30 and the outer peripheries of the filter element 21, a press plate 28 and clamp metal fittings 29 and discharged out of the filter apparatus to a direction shown by the arrow B. In this case, a ring shaped liquid pervious support member 25 is arranged to the upper surface or the lower surface of the filter main body 24. Therefore, the judgement of the washing degree on the secondary surface side of the filter material can be visually performed after washing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filtration element that separates solid particles or gel-like substances mixed in a fluid.

Conventionally, these transient elements have been used in various shapes depending on the type of fluid, the type of mixed solid particles or gel material, and the suspension. The fluid is a highly viscous substance such as a molten polymer substance, and the size of the solid particles or gel-like material to be separated is from several tens of micrometers to several tens of micrometers,
Also, it is a so-called high-performance product that can process a large amount of fluid (large capacity).
In filtration, a filtration device in which filtration elements (in the form of leaf disks) are stacked and assembled in multiple stages is generally used.

The configuration and functions of a conventional filtration device will be described below with reference to the drawings.

FIG. 1 is a bottom view of a conventionally used leaf disk-shaped J filtration element 1, which is described in, for example, Japanese Patent Application Laid-open No. 50-85965, but does not show a cross section. It is a side cross-sectional view taken along the arrow to the left of the figure.

In the figure, 2 is an annular support member with a through hole 3;
A porous door material main body 4 typified by a sintered body or a wire mesh is connected to the support member by welding or the like in a leak-free manner. A corrosion-resistant reinforcing material 5 such as a stainless wire mesh is buried inside the shido timber body 4 to prevent the 'tP material main bowl body 4 from deforming due to the temporary pressure when the fluid passes through the shido timber. There is. That is, the fluid to be filtered passes through the porous door material main body 4 from the outside and separates solid substances and gel-like substances 2 into molecules! After 1 s, it passes through the through hole 3 and reaches the inside of the annular support member 2.

FIG. 3 is a side cross-sectional view of a filtration device in which the conventional leaf disk-shaped filtration cables 1 described in FIGS. 1 and 2 are stacked in multiple stages.

A leaf disk-shaped filtration rope 1 is stacked and assembled in multiple stages as shown in the figure, using metal fittings 8 to tighten a support plate 6 attached to an end plate 12 via a presser plate 7. The outer diameter of the strut 6 is made smaller than the inner diameter of the hub 2 of the A-line 1 by 1 inch so that the fluid passing through the transit element 1 is not blocked, and a fluid passage 11 is provided inside the strut 6. A through hole 10 connecting the passage 11 with the outside of the support 6 is provided in the support 6.The transit element 1 incorporated in the support 6 is incorporated in the filter casing 9 as shown in FIG. configuring the device.

In the transient element constructed in this way and the transient device assembled by stacking these in multiple stages, the outer surface of the door material main body 4 separates as the fa calculated outflow of the polymer used increases.
Clogging occurs due to the foreign matter passing through, and the primary side pressure of the passing fluid gradually increases until it reaches the allowable upper limit pressure. Normally, when this upper limit pressure is reached, the two filtration elements are replaced at once. For these used P materials, the cleaning fluid and process are appropriately selected depending on the type of fluid to be applied and the number of foreign substances to be captured.

However, in recent years, requirements have become stricter both quantitatively and qualitatively for foreign matter defects in product quality, and as a result, high precision of Pu is progressing. Due to the shortcomings based on 2, the quality foreign body defects due to incomplete internal cleaning of the filtration element are increasing more and more. In other words, even if the used Pu is not actively backwashed during the cleaning process, such as chemical cleaning or water cleaning, the interior of the filtration element (at 5' in Figure 2) The spaces shown) are more or less contaminated by dirty fluids, i.e. secondary fluids, due to cleaning.

Moreover, the foreign matter remaining inside the filter element once contaminated must flow out through the through hole 3 of the support member 2 of the filter element shown in FIG. 2, as described above. % removal is impossible, and it is also not possible to easily check the degree of internal cleaning. Furthermore, depending on the type of the P material main body 4, foreign matter may flow out from the internal space 5' of the transitive element over time due to the P material itself falling off, sometimes causing trouble in subsequent processes and preventing equipment operation. This is a cause of a decrease in yield due to a decrease in yield.

In addition, in terms of R quantity, it becomes a defect in product quality and reduces yield.
B is here.

The purpose of the present invention is to solve the above-mentioned drawbacks of the conventional leaf disk-shaped filtration element. The purpose of the present invention is to provide a filtration element that can be easily rewashed if foreign matter remains on the surface of the secondary material.

The structure of the present invention that achieves the above object is such that the inner circumferential side surface is open, the upper surface, the lower surface, and the outer circumferential surface are surrounded by an enclosing member, a fluid passage is formed outward, and most of the enclosing member is made of P material. and an annular support member having a fluid outflow hole penetrating from the inner circumferential side to the outer circumferential side, and the inner circumferential side of the P material main body and the support member A temporary unit in which the door material main body and the support member are integrally joined in a state where the outer circumferential side surfaces of It is a temporary element characterized by having been arranged.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 4 is a plan view showing a part of the filter element according to the present invention in cross section, and FIG. 5 is a side cross-sectional view taken along arrow B-8 in FIG.

In FIGS. 4 and 5, 22 is an annular supporting member in which a fluid outflow hole 23 penetrating from the inner circumferential side to the outer circumferential side is formed, and 24 is an annular support member forming an inner circumferential hub.
The material body is made of a porous material such as a sintered body or a wire mesh. The R material main body 24 has a fluid passage formed inward, and the upper and lower walls are joined by welding or the like on the outer peripheral surface side in a leak-free state, and the inner peripheral surface of the R material main body 24 and the annular supporting member 22 are joined together by welding or the like in a state of meeting, and the f material main body 24
and the annular support member 22 form a filtration unit.

The outer surface of the P material main body 24 of the filter unit is provided with a corrosion-resistant liquid-permeable support such as a stainless wire mesh to reinforce the F material main body from being deformed by the i filtration pressure when the fluid passes through the R material. The member 25 is arranged so as to cover almost the entire surface of the P material 24, and the liquid-permeable support member 25, the annular support member 22, and the door material main body 24 have a structure that allows for separation. It is preferable.

Although not shown in FIGS. 4 and 5, for convenience in handling, the door material body 24 may be placed inside the two-piece material body 24 as necessary to prevent the door material body 24 from deforming. Corrosion-resistant reinforcing material such as stainless steel wire mesh may also be buried. That is, the fluid to be filtered is supplied from the center of the filter cable 21, passes through the fluid inlet hole 23 of the inner peripheral hub, which is the annular support member 22, and reaches the internal space 26 of the two-piece main body. In general, the fluid flows through the fern main body 2 made of a porous material.
4, and after filtering solid substances and gel-like substances by Nti, it passes through a liquid-permeable support member 25, which is an annular reinforcing member, and reaches the outside of the filter element.

The liquid-permeable support member/material 25 arranged on the outer circumferential surface of the material body 24 and the reinforcing material embedded as necessary inside the material body 24 uniformly distribute the flow ff1M load to the material. Naturally, from the viewpoint of the P material body, materials with lower pressure drop resistance than the P material body are used for both, and the liquid-permeable support member and the reinforcing material only act as supports for the two material bodies, and the i-filtration It also serves as a passage for sending out the passed fluid to the subsequent process. Specific examples of the liquid-permeable support member (reinforcing material) include an annular wire mesh (4 to 10 meshes) as shown in FIG. 7, and a large number of wire meshes as shown in FIG. An annular flat plate having a small hole 42 and a large number of radial fluid passages 43 (cross-sectional shape is rectangular, V-shaped, U-shaped, etc.), or a 41 II pile-shaped filling material, regardless of whether it is a regular or irregular shape, is used. can. Naturally, the liquid-permeable support member also includes a reinforcing material in a broad sense, which is a combination of the liquid-permeable support member and a support member, such as an annular flat plate with a large number of small holes. .

FIG. 6 is a side sectional view of a transit device in which transit elements according to the present invention are stacked and assembled in multiple stages.

In the figure, reference numeral 21 denotes a leaf disk-shaped temporary element, which is laminated in multiple stages on a support 27 attached to a mirror plate 33 with a clamping fitting 29 via a presser plate 28. Pillar 27
The outer diameter of the strut 2 is made smaller than the inner diameter of the transitive element 21.
7 is fitted with the main body 24 of the temporary element 21.

In addition, the support column 27 is provided with an internal fluid passage 32 and a through hole 31 . The transit elements 21 incorporated in the branch 27 are arranged in the transit casing as shown in the figure, and constitute a filtration device.

To explain the filtration element (according to the present invention) from a functional perspective,
High viscosity fluid containing solid particles or gel-like substances to be separated enters the transit device from the direction of arrow A in the figure, passes through the intra-pillar passage 32 and the through hole 31, and passes through the multi-tiered filtration elements 2.
1.

In each filtration element, as already explained in FIGS. 4 and 5, the high viscosity fluid flows from the center of the S filtration element 21 toward the outer periphery, and Solid particles or gel-like substances are filtered and separated by the door lumber body 24.The high viscosity fluid that has passed through each S filter element is filtered and separated by the casing 30.
and) filtration element 21. The liquid flows along the flow path formed by the gap between the holding plate 28 and the outer periphery of the clamping metal fitting 29, and is discharged out of the apparatus in the direction of arrow B. In the conventional example shown in FIG. 2, if foreign matter accumulates in the internal space 5', it is difficult to clean, but in the present invention, the secondary side of the 'tP material is flushed with the outer surface of the transitory element, making it easy to clean.

In the present invention, since the annular liquid-permeable support portion 425 is disposed on the upper surface or lower surface of the door timber body 24,
This method has the great advantage of making it easy to determine whether the secondary surface of the door material has been washed (after cleaning), and the quality control of the regenerated filtration element is further strengthened with high precision. However, if any foreign matter remains on the secondary side N1 door material, it should be immediately washed and removed again to ensure the accuracy of the filtration element. Therefore, product quality defects or equipment troubles in the manufacturing process caused by foreign matter remaining on the secondary side of the filtration element as described above are eliminated.

The liquid-permeable support member 25 is separable from the door material body 24.
F431 is preferable, but depending on the required quality level, it can be made into an integrated structure, which is more advantageous in terms of handling such as lifting and dismantling.

In addition, the internal space of the filtering element 21 (indicated by 26 in FIG. 5) is a passage space through which fluid passes before being filtered, and foreign matter remaining on the inner surface of the door material body 24 is removed. Since the P material does not flow out to the secondary side of the main body, the above-mentioned problem does not occur.

Furthermore, the filtration elements of the present invention, as illustrated in FIGS. 4 and 5, are manufactured in a manner that differs significantly from conventionally used transient elements such as those shown in FIGS. 1 and 2. It also has the advantage that existing manufacturing equipment can be used as is.

As described above, it is clear that the present invention has superior advantages over conventional filtration elements, and exhibits excellent effects as a high-performance filtration device.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a part of a conventional leaf disk-shaped filtration element in cross section, and FIG. 2 is a side sectional view taken along the line A--A in FIG. FIG. 3 is a side view of the filtration device (in which the conventional leaf disk-shaped filtration elements described in FIGS. 1 and 2 are stacked in multiple stages). FIG. 4 is a plan view showing a part of 9 filter elements according to the present invention in cross section;
5 is a side sectional view taken along arrow B-8 in FIG. 4. FIG. 6th
The figure shows an S in which filter elements according to the present invention are stacked and assembled in multiple stages.
FIG. 2 is a side cross-sectional view of the filtration device. Figures 7 and 8 are
FIG. 9 is a plan view showing an example of a liquid-permeable support member applicable to the present invention, and FIG. 9 is a cross-sectional view taken along line CC in FIG. 8. Explanation of the symbols 1: leaf-shaped filter element, 2: annular support member, 3: through hole, 71: porous P material body, 5: reinforcing material, 5', 26 = internal space of the filter element, 6.27
: Post-17, 28: Holding plate, 8.29: IM fittings,
9, 30: S filtration'y-sig, 10.31
: Through hole, 11.32: Fluid passage, 1'2,33:
end plate, 21:) is over-element, 22: annular support member, 2
3: Fluid outflow hole, 24: Annular door material body, 25: Liquid-permeable support member Fig. 1 Fig. 2 Sand Fig. 8 Fig. 4. I'2I Figure 1 GI2I 7nt Figure 8

Claims (1)

[Claims] An annular door material main body having an open inner circumferential side surface, an upper surface, a lower surface, and an outer circumferential surface surrounded by an enclosing member, a fluid passage being formed outwardly, and most of the enclosing member being formed of 'tP material. and an annular support member having a fluid outflow hole penetrating from the inner circumferential side to the outer circumferential side, and the inner circumferential side of the door main body and the outer circumferential side of the support member are brought together. A filtering element characterized in that a liquid-permeable support member is disposed on the upper surface or the lower surface of the door material body of a temporary unit formed by integrally joining the door material body and the support member in a state. .