JPH067784Y2 - Fluid filter filter element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a fluid filter element for treating liquids or gas bodies such as various chemicals and solvents.

(Prior Art) For example, as a filter for processing chemicals, solvents or gas bodies used in the production of electronic device parts (semiconductor substrates such as IC and LSI) and the production of various pharmaceuticals, the inner diameter of the container is limited. Japanese Patent Laid-Open No. 60-22904 proposes a device which can secure a large over-area without receiving the light.

The outline is as shown in FIGS. 4 to 6.
First, as shown in FIG. 4, a porous thin film 1 made of a fluorine-based resin.
A mesh body 2 (figure B) or a plain weave mesh body 2 ′ (figure C) melt-extruded from a fluorine-based resin or polypropylene is laid on both sides or one side that is the inner side, and a hole for attachment is placed in the center. Open the material and make the two materials
As shown in the figure, the same quality resin is placed above and below the spacer 3 consisting of the central cylindrical boss portion 3a and the lateral collar 3b, and the peripheral edges of the holes of each material are fused to the upper and lower surfaces of the lateral collar 3b, and at the same time, The peripheral edges are fused to form a single flexible over-element e (in this case, the nets inside the upper and lower thin films have the function of forming flow paths, while the outer nets protect the film). It has a role, but this is not always the case), and then, as shown in FIG.
Is inserted into the center pipe 4 and a plurality of single over elements e are stacked, and the upper end of the center pipe 4 is screwed onto the outlet pipe 6a of the cover 6 as shown in FIG. Thus, each excess element e is housed in the elongated container 5 while being bent upward.

At the time of use, the processing fluid is taken into the container 5 from the lower inlet pipe, permeates the upper and lower thin films 1 of each of the excess elements e and enters the inside thereof, and reaches the central portion along the flow path forming net body 2. It flows so as to come out into the center pipe 4 through the through hole of the spacer 3.

(Problems to be solved by the invention) By the way, the net body for forming the flow path in the single element e of the filter, that is, the net body 2 disposed inside the upper and lower two thin films 1 is as shown in FIG. As shown in Fig. 4B, all the transverse members 2b orthogonal to the longitudinal members 2a are located on the same side of the plain weave net body 2'where the longitudinal members 2a 'and the lateral members 2b' are alternately raised and lowered. The thus-extruded net body 2 is widely used because it has a smaller fluid flow resistance. However, in manufacturing the over-element e, the upper and lower net bodies which are arranged inside the two upper and lower thin films are stacked. 2 vertical members 2a and horizontal members 2b
There is no problem if they are arranged so as to overlap each other as shown in Fig. 7B, but there is no standard for the arrangement,
In some cases, the upper net body may be displaced by 90 degrees with respect to the lower net body, and when arranged in this way,
When the negative suction pressure of the pump acts on the element e through the center pipe 4 during use, the horizontal member 2b of the upper net body is formed as shown in FIG.
Enter into the space between the vertical members 2a of the lower net body, the flow passage area of the fluid becomes small, and at the same time, the fluid resistance becomes large and the overfunction is remarkably lowered.

In view of the above, the present invention provides an over element in which the vertical members and the horizontal members of the upper and lower nets are always correctly overlapped with each other to ensure a constant flow passage area during manufacture.

(Means for Solving Problems) Based on the above-mentioned object, the present invention is made of synthetic resin, and is a material in which a mesh made of a vertical thin film and a horizontal cross member is attached to both sides or one side of a porous thin film. Are arranged above and below a spacer consisting of a tubular boss and a horizontal collar having a through hole, with the nets inside, and the peripheral edges of the central holes of each material are fused to the upper and lower surfaces of the horizontal collar of the spacer. In addition, at least two nets located inside the upper and lower thin films are arranged so that the positions in the front-rear direction and the left-right direction when cutting from the raw material are coincident with each other, as an excess element of the fluid filter that fuses the outer peripheral edges to each other It is characterized by having done.

(Embodiment) FIGS. 1 to 3 show an embodiment of the present invention, in which the same parts as those described above are designated by the same reference numerals.

In FIG. 1, reference numeral 1 is a fluorine-based resin (for example, tetrafluoroethylene) having a required size and a mounting hole 1a in the center.
A pair of upper and lower porous thin films, each having a hole 2c of the same size in the center on the inner and outer surfaces facing each other, for forming a flow passage forming or membrane protecting net body 2 respectively as follows. Are arranged.

The mesh 2 is formed by melt-extruding from a fluorine-based resin or a resin such as polypropylene. As shown in FIG. 4B, the horizontal members 2b are orthogonal to the vertical member 2a and are arranged on the same side. , The intersections are joined together.

Then, the nets 2 inside each of the nets, particularly the upper and lower thin films 1,
Are arranged such that the positions in the front-rear direction and the left-right direction at the time of cutting out from the original are aligned.

That is, as shown in FIG. 3, a net material is fed out from a raw roll 2R (having a width twice that of the net body), and a center hole is formed on the net material, and at the same time, the net body 2 having a certain size is cut. In doing so, for example, different marks m ₁ and m ₂ are provided at both ends of one diagonal line of each mesh 2, and the marks m of the upper and lower ones are made.
₁ and m ₂ are overlaid on each thin film 1 so that they are aligned. In the figure, the two mesh bodies 2 are shown, but
Of course, this may be one or three pieces,
Further, the content of the mark and the method of attaching the mark may be arbitrary as long as they can distinguish the front and rear, right and left of the net 2.

As described above, each material in which the net body 2 is superposed on both surfaces of the upper and lower thin films 1 is inserted through the central holes 1a and 2c,
As shown in FIG. 2A, the spacers 3 of the same material composed of the tubular boss portion 3a and the lateral collar 3b having the through hole are fitted into the upper and lower ends of the tubular boss portion 3a, and the peripheral edges of the hole portions of the respective materials are spaced apart. At the same time as being fused to the upper and lower surfaces of the lateral brim 3b of the child 3, their outer peripheral edges are fused together to form a single over-element e as shown in FIG.

Then, when the inner diameter of the container is not as large as the left, the single excess element e is used in a state of being curved upward through the center pipe into which the spacer 3 can be inserted as described above. When the inner diameter of the container is large, the spacers 3 are stacked and joined together without using the center pipe, and the uppermost spacer 3 is directly joined to the outlet pipe of the cover, which is used in a state of being horizontally laminated. It

At the time of its use, even if the net negatives 2 inside the upper and lower thin films 1 approach each single element e due to the suction negative pressure of the pump, the nets 2 are located at the front, rear, left and right positions at the time of cutting. Are aligned, the vertical members 2a or the horizontal members 2b are vertically aligned with each other, and a flow passage area of a certain width is secured in the upper and lower thin films 1.

In the above-mentioned example, the thin film 1 and the net body 2 are shown as square ones, but they may be circular, and the net body 2 is provided inside and outside the thin film 1 but the outside You don't have to have anything.

(Effects of the Invention) As described above, in the present invention, a mesh is formed by attaching a mesh body extruded by orthogonally crossing a vertical member and a cross member on one or both sides of a porous thin film. Placed inside,
Two nets positioned inside at least the upper and lower thin films as flexible over-elements made of synthetic resin that fuse the peripheral edge of the central hole of each material to the upper and lower surfaces of the lateral ribs of the spacer and also fuse the outer peripheral edges to each other. Since the front and rear direction and the left and right direction at the time of cutting from the original are aligned, it is possible to vertically align the vertical members or the horizontal members of the two nets in the upper and lower thin films. In this way, the horizontal members of the upper net do not enter between the vertical members of the lower net during use, a flow area of a certain width is secured in the excess element, and the fluid resistance is low.
The over-efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a pair of upper and lower members according to the present invention are separated. FIG. 2 (a) is a cross-sectional view of one half of the state where the members are arranged above and below the spacer. FIG. 2B is a cross-sectional view of one half of the overelement of the present invention. FIG. 3 is a perspective view of the cut-out state of the net body. FIG. 4 (a) is a perspective view of a conventional material. The figure (b) is a perspective view of a part of the net body formed by extrusion molding. FIG. 3C is a perspective view of the plain weave net body. FIG. 5 is a sectional view of a conventional overelement. FIG. 6 (a) is a front view showing a state in which the layers are stacked. FIG. 6B is a cross-sectional view of the fluid filter. FIGS. 7 (a) and 7 (b) are explanatory views showing the overlapping state of the upper and lower nets, respectively. In the figure, 1 ... Thin film, 1a ... Central hole, 2 ... Net, 2a ... Vertical member, 2b ... Horizontal member, 2c ... Central hole, 3 ... Spacer, 3a ... Cylindrical boss portion, 3b ... … Horizontal brim, m ₁ , m ₂ … mark

Claims (1)

[Scope of utility model registration request] 1. A material comprising a synthetic resin and having a mesh body 2 in which a vertical member 2a and a horizontal member 2b are orthogonal to each other on one or both sides of a porous thin film 1, and a cylindrical boss portion 3a and a through hole. The nets are arranged inside and below the spacer 3 composed of the lateral ribs 3b, and the peripheral edge of the central hole of each material is provided with the lateral ribs 3b of the spacer 3.
In the excessive element that is fused to the upper and lower surfaces and also fused to the outer peripheral edges, at least the two mesh bodies 2 located inside the upper and lower thin films 1 are positioned in the front-rear direction and the left-right direction at the time of cutting from the original fabric. An excess element of a fluid filter, which is arranged so as to match.