JPH0470921B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a filtration element for fluid cleaning.

[Conventional technology]

Conventionally, a filtration element for fluid cleaning is described in Swiss Patent No. 226225.

This is made by abutting two adjacent filtration elements each having a corrugated cross-section, and joining the abutted portions to form an integral unit.

[Problem to be solved by the invention]

However, it is still not easy to manufacture a filtration element by simply dividing two filtration elements in this way, and it has been desired to simplify the manufacturing process by further dividing the filtration element. A problem arises in that the strength of the filtration element becomes weaker.

The present invention has been devised in view of the above-mentioned problems, and the present invention not only has sufficient strength even when the filtration element is composed of three or more filtration parts each configured separately, but also The purpose is to simplify the manufacturing process.

[Means to solve the problem]

The present invention provides three or more filtration portions each having a corrugated cross-sectional portion and arranged adjacent to each other and configured separately, and two filtration portions adjacent to each other among the three or more filtration portions. A resin bonding part that is connected between the three or more filtration parts and has an integral structure, and a central part that is a gathering part of the three or more filtration parts that have the integral structure. a resin center portion; and a resin holding portion coupled to outer peripheral portions of the three or more filtration portions having an integral structure, the bonding portion, the holding portion, and the center portion having an integral structure. It adopts the technical means that have been developed.

[Action/effect of the invention]

By adopting the present invention, even in a filtration element having three or more filtration parts, two adjacent filtration parts are not only connected by the resin bonding part, but also In addition to joining the resin center to the center where the filtration parts gather,
Since the resin holding portion is also formed on the outer periphery of the filtration portion, a filtration element with sufficient strength can be obtained.

In other words, the integral structure of the resin bonding part, resin center part, and resin holding part effectively acts to weaken the external force in the lateral and vertical directions of the filtration element; Coupled with the function as a reinforcing material, it is possible to prevent a decrease in strength of the joint portion of a plurality of integrally configured filtration parts, and thus effectively suppress separation of adjacent filtration parts. Moreover, the deformation of the cross-sectional corrugated portion can be controlled, and a rigid filter element can be provided even though it is composed of a plurality of filter parts.

〔Example〕

The present invention will be explained below with reference to embodiments shown in the drawings.
First, in FIGS. 1 to 3, reference numeral 1 is a triangular filter medium, and when the filter medium 1 is folded between both ends with a constant folding width at the position indicated by the broken line in the figure, as shown in FIG. A cross-sectional corrugated portion 2a in which a plurality of continuous top rows and bottom rows are formed between both ends of the filter medium 1.
The filter medium 2 has the following properties. For example, six of the filter media 2 are used as shown in FIG. 3, and the folded filter media 2 of FIG. The two adjacent filter parts of the filter medium 2 are molded with resin (for example, single-cell polyurethane) to integrally mold the resin joint 3a, and the resin is placed adjacent to each other. The resin holding portion 3b and the resin center portion 3c are integrally molded so as to extend to the central portion and the outer peripheral portion where the filter media 2 gather.

As a result, the plurality of filter media 2 are connected to the resin bonding portion 3a,
The resin holding portion 3b and the resin center portion 3c form an integral structure that cannot be separated from each other, and form a filtration element 4. As understood from FIG. 3, the resin bonding portion 3a has a radial shape with respect to the filtration element 4 centered on the resin center portion 3c.
Further, the resin bonding portions 3a are located between the mutually adjacent corrugated cross-sectional portions 2a of the filter media 2 at the abutting portions of the filter media 2. Furthermore, the resin bonding portion 3a is located even toward the center of the filter element 4.

FIGS. 4 to 6 show other examples of the filter body which is the basic structure of the filter element of the present invention.
In this example, a trapezoidal type is used as the starting filter medium 1. This trapezoidal filter medium 1 is folded to form a filter medium 2 having a corrugated section 2a, and a basic configuration can be produced using four filter mediums 2 as shown in FIG.

FIG. 7 shows still another example of the filter body of the basic configuration of the filter element of the present invention. In this example, the filtration performance of one of the filter media 11 is improved. Various means can be considered to improve the filtration performance, such as changing the material of the filter medium or reducing the pleat pitch, but in this case, any method may be used.

In this example, the folded mountain pitch is made smaller. That is, three pleated filter media 11 and a pleated filter material 1 with a smaller pitch of pleats compared to the three pleated filter media 11.
2, and not only the spaces between two adjacent filter media but also the central portion where each filter media gathers are integrally bonded as a resin mold. In this example, the filtration performance of one of the four filter media was changed, but two
Of course, you can change one or all four.

In addition, the filter body 4 of the basic configuration shown in FIGS. 6 and 7,
8 and 9 show examples of applications of the fluid purifier using the fluid purifier 13.

To explain this structure, in FIG. 8, a gasket 5 made of an elastic material such as rubber is attached to the outer peripheral edge of the filter body 4, and
A disc-shaped porous indicator plate 6 is interposed at the lower end of the filter body 4, and the gasket 5 is vertically held between a case 7 and a cap 8 and fixed with bolts 9 and nuts 10. According to this configuration, the fluid to be filtered passes as shown by the arrow and is cleaned by the filter body 4. Even when the age of the fluid to be filtered is high or the velocity is high, deformation and destruction of the filter element may occur.
This can be prevented by the resin bonding part 3a located at the center.

FIG. 9 shows a support structure when using the filter having the basic structure shown in FIG.
In case 2, the passage resistance is large, so the velocity of the fluid to be filtered is reduced, and even fine particles can be captured. Therefore, the cleaning efficiency of the filter body 13 is improved.

As shown in FIG. 10, the support structure includes protruding plate parts 15a and 16a to divide the space formed by the case 15 and the cap 16 into two, and the upper end of the resin joint part 3 of the filter body 14 is attached to each part. The lower surface of the porous support plate 6 may be tightly attached and sealed. According to this support structure, two systems of fluids to be filtered can be filtered. The filtration accuracy of the portions 14a and 14b of the filter body may be changed.

In this way, if the filter body with the basic configuration shown in FIGS. 6 and 7 is used as is, a gasket 5 made of rubber, for example, is required as a support structure, but as shown in FIG. If you prepare them all together,
The filter element can be supported by the support portion 3b, and the gasket can be eliminated, contributing to a reduction in the number of parts.

The present invention is not limited to the above embodiments, but can be modified in various ways as described below.

(1) The filtration performance of the plurality of filter media 2 in the embodiment shown in FIG. 3 may be changed.

(2) Of course, the filter element of the present invention may be constructed by using the fan-shaped filter medium 1 shown in FIG. 11 and employing a filter medium pleated along the arc line 1a.

(3) Each of the plurality of filter media may have different densities.

(4) Fold rectangular or square filter media to make a triangle;
A trapezoidal or fan-shaped starting filter medium may be produced.

(5) The filter element of the present invention can also be configured by combining three filter media.

(6) In the present invention, the arrangement pattern of the cross-sectional corrugated portions of the plurality of adjacently arranged filtration portions is not limited to this embodiment, and it goes without saying that various modifications are possible.

[Brief explanation of drawings]

Figures 1 to 3 explain the manufacturing process of a filter element, which is an embodiment of the present invention. Figure 1 is a developed view of the filter medium, and Figure 2 is a view of the filter medium in Figure 1 in a bent state. 3 is a perspective view showing the filter element, and FIGS. 4 to 6 show other examples of the manufacturing process of the filter body, which is the basic configuration of the filter element in the present invention. is a developed diagram of the filter medium,
5 is a perspective view showing the filter medium in FIG. 4 in a bent state, FIG. 6 is a partially cutaway perspective view showing the filter body, and FIG.
The figures are perspective views showing other examples of the filter body, which is the basic configuration of the filter element in the present invention.
FIG. 0 is a sectional view illustrating the support structure of the filter body shown in FIGS. 6 and 7, and FIG. 11 is a perspective view showing another example of the filter medium used in the filter element of the present invention. DESCRIPTION OF SYMBOLS 1... Filter medium, 2... Filter medium, 2a... Cross-sectional corrugated part, 3a... Resin bonding part, 3b... Resin holding part.

Claims (1)

[Scope of Claims] 1. Three or more filtration parts having a corrugated cross-sectional part, arranged adjacent to each other, and each configured separately; and two adjacent to each other of the three or more filtration parts. a resin bonding part that is connected between the filtration parts and has an integral structure of the three or more filtration parts; and a central part that is a gathering part of the three or more filtration parts that have the integral structure. a bonded resin center portion; and a resin holding portion bonded to the outer periphery of the three or more filtration portions having the integral configuration, wherein the bonding portion, the holding portion, and the center portion are connected to each other. A fluid cleaning filtration element characterized by having an integral structure. 2. The resin bonding portion is streak-like, and the resin bonding portion is located in the vertical direction between adjacent cross-sectional corrugated portions between adjacent filter portions of three or more. Claim 1
The described fluid cleaning filtration element. 3. The fluid cleaning filtration element according to claim 1, wherein the resin bonding portions are arranged radially around the center portion.