JP3504048B2 - Filter unit and separation device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter unit equipped with a plurality of filter elements made of porous plastic for filtering and separating fine particles contained in a fluid such as liquid or gas, and The present invention relates to a separation device incorporating a filter unit.

[0002]

2. Description of the Related Art Conventionally, a porous material having pores with a predetermined pore size is formed by sintering a plastic of predetermined particles for separating and filtering fine particles contained in a fluid such as liquid or gas. As a filter or a filter element, a ceramic material or a plastic material formed into a honeycomb shape, a cylindrical shape or a box shape is known. The applicant previously proposed in Japanese Patent Application No. 5-91865 a filter unit in which a plurality of porous filter elements are erected on a plate-like support. Also,
Japanese Patent Application No. 5-58969 also proposes a separating device in which a plurality of cylindrical porous filter elements are arranged inside a separator casing having a predetermined shape.

However, since the honeycomb-shaped filter element using the above-mentioned ceramic material is formed into a honeycomb shape by using a porous ceramic material having fluid permeability, there is a problem in formability of the filter element. Furthermore, maintenance work such as assembly workability and replacement is difficult. Further, in the case of a cylindrical or box-shaped filter element made of a plastic material, the filter element is used as it is by incorporating it into the separator casing having a predetermined shape as it is. In order to secure the filtration area, the separator casing tends to be large, and accordingly, the separator installation area also becomes large.

The filter unit previously filed by the applicants has a plate-like support having substantially the same floor area as that of the separating device.
Since many porous filter elements are erected in a so-called so-called honeycomb shape, there is a difficulty in maintenance work such as assembly workability and replacement, and the opening edge of the porous filter element is supported by a plate. The work of airtightly joining to the body is complicated. Further, similarly in the case of the separation device in which the filter unit is incorporated in the separation device casing, maintenance work such as assembling workability and replacement is also difficult, and the work of hermetically attaching the filter unit to the separation device casing is also complicated. .

[0005]

DISCLOSURE OF THE INVENTION The present invention is to solve the above-mentioned problems, and its gist is to obtain a gas having a predetermined pore size.
Filter filter made of hollow porous plastic with holes
And a plurality of the above-mentioned filter elements, which are integrally fixed to a support body forming a flange portion at an opening outer edge portion of an upper end opening portion of the filter element, and a lower end opening portion of which is closed. Forming a through hole through which the filter element is inserted into the support member in a row while molding the support member with a thermosetting resin into a band shape wider than the outer diameter of the filter element, and inserting the filter element into the through hole, A thermosetting resin is poured between the inner surface of the through hole and the outer surface of the filter element to impregnate the pores of the outer edge of the filter element opening and harden it to fix the filter element integrally to the support, and to open the lower end opening of the filter element.
The filter unit is characterized in that it is closed with a thermosetting resin . Further, the filter unit is characterized in that the lower parts of the filter element are connected and fixed to each other.

Further, the filter unit having the above structure is provided.
In the separating device, the inside thereof is divided into an upper chamber and a lower chamber by a plate-shaped partition body having a plurality of through-hole portions, and the through-hole portion of the plate-shaped partition body has a filter filter at the through- hole portion.
Element and insert the collar of the support on top of the plate-shaped partition.
Airtightly holding the above-mentioned filter unit installed ,
The separating device is characterized in that the filter element is hung from the upper part to the lower part, and a gas outlet for backwashing is installed oppositely above the upper end opening of the filter element in the upper chamber.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a perspective view showing a filter unit of the present invention, FIG. 2 is a side sectional view in which a fixed state of a filter element attached to the filter unit is partially omitted, and FIG. An embodiment of the device is shown in a partially cutaway side view, FIG.
The XX line arrow in FIG. 3 is shown in an enlarged side sectional view, and FIG.
FIG. 6 is a partially cutaway side view showing another embodiment of the separating device.
[Fig. 4] is a partially cutaway side view showing still another embodiment of the separating device.

As shown in FIGS. 1 to 4, the filter unit of the present invention has a hollow filter element (hereinafter referred to as “element”) 11 made of porous plastic, and the upper ends of a plurality of elements 11. A filter unit (hereinafter, referred to as a "unit") 1 which is integrally fixed to a support body 12 forming a flange 121 at an opening outer edge portion 13 of an opening 111 portion and closes a lower end opening portion 112, While molding the support 12 with a thermosetting resin,
The element 11 is fixed to the support 12 in which the collar 121 formed by impregnating and curing the thermosetting resin in the pores of the opening outer edge portion 13 of the element 11 is integrated, and the lower end opening 112 of the element 11. Is closed with a thermosetting resin with or without the lid 14, and the elements 11 and 11 are connected and fixed to each other.

According to the unit 1 of the present invention described above, the opening outer edge portion 13 of the upper end opening portion 111 of the porous element 11 is formed.
Then, the thermosetting resin is impregnated into the pores and cured to form the support 12
And the lower end opening 11 of the element 11
Since 2 is closed and connected by a thermosetting resin, the fluid to be filtered containing fine particles surely flows into the upper chamber A-1 of the separation apparatus main body A through which a clean filtered fluid passes by a short circuit. To be prevented.

Further, in the separating apparatus of the present invention, the inside of the upper chamber A-1 is formed by the plate-like partition body 2 having a plurality of through holes 21.
And a lower chamber A-2, the inside of which is divided into an upper chamber A-1 and a lower chamber A-2 by a plate-shaped partition body 2 having a plurality of through holes 21. A separating apparatus, wherein a plurality of porous hollow elements 11 are hermetically held in a through hole portion 21 of the plate-like partition body 2 and fixed to a support body 12 in series, and Room A-1
The lower chamber A-2 is installed so as to hang down, and the upper chamber A is also installed.
-2 is characterized in that the gas outlet 3 for backwashing is installed opposite to the upper position of the upper end opening 111 of the element 11, and the gas outlet 3 for backwashing and the element 11 are also provided.
The diffuser 4 is disposed between the upper end opening 111 and the upper end opening 111.

According to the above separating apparatus of the present invention, the inside is
With the plate-shaped partition body 2 having a plurality of through holes 21, the upper chamber A
-1 and a lower chamber A-2, and the upper chamber A-1 is provided with a gas outlet 3 for backwashing and a diffuser 4, and the unit 1 is connected to the plate-shaped partition 2. Since the unit 1 is airtightly held in the hole 21 so that the unit 1 can be hung from the upper chamber A-1 to the lower chamber A-2, the unit 1 can be installed in the separation apparatus main body A. Construction can be done easily and maintenance management such as replacement can be done easily.

[0012]

EXAMPLE 1 A unit 1 of the present invention is a perspective view of FIG.
As shown in the side sectional view of FIG. 2, it is composed of a plurality of hollow elements 11 each having an upper end opening, for example, 4 to 13 elements, and a support 12 having a collar 121 for supporting the elements. The element 11 is made of a porous material in which pores having a predetermined pore size are formed by sintering a particulate plastic and the like, and usually has a fine pore size of about 10 to 100 microns.

The plastic to be used is not particularly limited as long as it is a thermoplastic which can obtain a porous body by sintering. For example, ultra high molecular weight polyethylene,
Thermoplastic resins such as high-density polyethylene, polypropylene, polyvinyl chloride, and ethylene-vinyl acetate copolymer, and heat-resistant resins such as polysulfone, polyether sulfone, and polyphenylene sulfide, which are used alone or in a mixture. Used according to. The particle size of the plastic is in the range 5 to 90 microns, preferably 10 to 60 microns.

The element 11 obtained by sinter-molding the above plastic may be a single layer made of the above plastic, and may have a large particle size different from that of the above plastic or a different kind of plastic from the above plastic. It may have a laminated structure. The surface of the element 11 may be directly coated with fine particles of polytetrafluoroethylene having a particle size smaller than that of the plastic together with the adhesive to improve the scraping property and the surface collecting performance. Further, in order to impart an antistatic property to the element 11, an antistatic property-imparting material such as a surfactant is applied to the surface thereof, or at the stage of manufacturing the element 11, an antistatic material such as carbon black or carbon fiber. May be mixed.

The element 11 is formed by a static sinter molding method using a molding die composed of an outer die and an inner die capable of being filled with plastic particles, an extrusion die or an injection die. Molded by dynamic sinter molding method etc.,
The cross-sectional shape of the element 11 may be an elliptical shape, a square shape, a rectangular shape, or a deformed star shape other than the illustrated circular shape. The unit 1 is formed by linearly arranging a plurality of, for example, 4 to 13 elements 11 so that the upper end openings 111 of the elements 11 penetrate the flange 121 of the support 12 and are fixed to the support 12.

That is, the support 12 having the above-mentioned collar 121.
To fix the element 11 to the element 11, a thermosetting resin such as a low-viscosity two-component polyurethane resin, epoxy resin, phenol resin, or unsaturated polyester resin is used in advance, and the element 11 has an outer diameter of 20 to 40%. A wide support 12 is formed in advance, a through hole 122 slightly larger than the outer diameter of the element 11 is provided in the approximate center of the support 12 to form a flange 121, and the through hole 122 is
The outer edge 13 of the upper opening 111 of the element 11 is flush with the upper surface of the support 12 so that the element 1
1 is inserted into the support 12.

Then, the thermosetting resin is added to the through hole 122.
Between the inner surface of the element 11 and the outer surface of the element 11 so that the thermosetting resin is impregnated into the pores of the opening outer edge portion 13 of the element 11 to be cured, or a convex portion having an outer diameter substantially equal to the inner diameter of the element 11 is formed. A plurality of ship-shaped molds are arranged at predetermined intervals, and the upper end opening 111 of the inverted element 11 is inserted into the convex part of the ship-shaped mold to temporarily stand up,
In that state, an uncured liquid thermosetting resin is poured into the mold to impregnate the inside of the pores of the opening outer edge portion 13 of the element 11 and harden it, and thereafter, the mold is released from the boat-shaped mold and the collar portion 1 is formed.
The element 11 may be fixed to the support 12 having 21. Furthermore, you may heat to 70-80 degreeC after demolding, and it may accelerate | stimulate hardening.

When the element 11 is fixed to the support 12, a slight gap may be provided between the outer surfaces of the adjacent elements 11 and 11, but if the element 11 is erected without a gap, the unit 1 However, the floor area occupied by the separator is smaller, which is preferable. In addition, 0.5 to 10% of carbon black, iron powder, copper powder, or the like, and an antistatic material such as carbon fiber having an average yarn length of 0.5 to 1.5 mm are mixed in the thermosetting resin to support it. An antistatic property may be imparted to the body, and further, by mixing inorganic fibers such as glass fibers having the same average yarn length as the former or organic fibers, the deformation prevention and the mechanical strength may be improved. .

On the other hand, the lower end openings 112 of the plurality of elements 11 attached to the unit 1 are closed with a thermosetting resin and are connected to each other. In this closing and connecting method, the lid 14 is made in advance by using the thermoplastic or the thermosetting resin forming the element 11, and the lid 14 is inserted into the lower end opening 112 of the element 11, Thermosetting resin may be poured into this to be integrated and closed and connected, and a ship-shaped forming die in which a plurality of recesses having substantially the same outer diameter as the element 11 are provided at predetermined intervals is prepared. After the lower end opening 112 of the element 11 is inserted into the concave portion of the shape-forming mold and temporarily erected while slightly floating, after uncured liquid thermosetting resin is poured into the mold and cured, The lower end opening 112 of the element 11 may be closed by demolding. It should be noted that, at the same time as closing as described above, the lid 14 and the lid 1
It is more preferable that the element 5 and the element 15 are attached to each other by bonding the element 5 or the element 15 separately so that the element 11 does not move and becomes stable.

[0020]

[Second Embodiment] As shown in a partially cut-away side view of FIG. 3 and an enlarged side sectional view of FIG. A-1 and lower chamber A
-2, and the plate-shaped partition 2 is made of stainless steel or other non-corrosive metal or epoxy resin or other thermosetting resin, and has a predetermined number of through-holes with a hole diameter substantially the same as the outer diameter of the element 11. 21 is formed and is airtightly attached to the inside of the separation device main body A by welding, bolting or the like.

Upper chamber A-1 above the plate-shaped partition 2
Is a region through which the purified fluid after separating and filtering the fine particles flows, and the gas outlet 3 for backwashing in which the nozzle 31 is arranged downward is the upper end opening 111 of the unit 1.
It is arranged opposite to. The gas outlet 3 for backwashing is connected from a gas generating source through a valve 32, a pipe 33, and the like, as is generally known. A diffuser 4 for increasing the backwashing action of the backwashing gas jetted from the nozzle 31 is provided between the backwashing gas blowing portion 3 and the upper end opening 111 of the element 1.

Then, the element 11 attached to the support 12 is inserted into the through hole portion 21 of the plate-shaped partition body 2,
The flange portion 121 of the support body 12 is positioned on the upper surface of the plate-shaped partition body 2, the packing 5 is interposed along with the through hole portion 21, and the diffuser 4 is covered from above and bolted by the holding metal fitting 41 to form a plate shape. The unit 1 is airtightly attached to the partition body 2. The lower chamber A-2 below the plate-shaped partition 2 is a region in which a gas containing fine particles before cleaning flows, and the element 11 fixed to the unit 1 is suspended from the plate-shaped partition 2. It is arranged. The fine particles contained in the separated and filtered fluid are collected in the lower portion of the lower chamber A-2 and discharged to the outside as necessary.

[0023]

[Third Embodiment] In the separating apparatus of the present invention, as shown in the partially cutaway side view of FIG. 5, when the diffuser 4 is arranged so as to be inserted into the upper end opening portion 111 of the element 11, a gas for backwashing is provided. Air outlet 3 and upper end opening 111 of element 11
It becomes easier to adjust the distance to and the diffuser 4
Since there is no rise of, the separating device can be lowered accordingly. In this case, the unit 1 is installed by inserting the element 11 attached to the support 12 into the through hole 21 of the plate-like partition 2 and installing the collar 121 of the support 12 in the same manner as in the second embodiment. The diffuser 4 is located on the upper surface of the plate-like partition body 2, and is inserted into the upper opening 111 of the element 11 along with the through hole 21 with the packing 5 interposed therebetween. It can be covered and bolted with the pressing metal fitting 41, or the pressing metal fitting 41 can be welded to the cover 42, or abutted to be attached to the plate-shaped partition body 2 in an airtight manner.

[0024]

Fourth Embodiment As shown in a partially cutaway side view of FIG. 6, the separating apparatus of the present invention does not require the diffuser 4 when the unit 1 used in the separating apparatus has a short length. Of course, the unit 1 in this case is installed by inserting the element 11 attached to the support 12 into the through hole 21 of the plate-shaped partition 2 as in the case of the second embodiment, and then the flange of the support 12 is inserted. 121 is positioned on the upper surface of the plate-shaped partition 2, the packing 5 is interposed along the through hole 21, the cover 42 is covered, and the metal plate 41 is fixed by the pressing metal fitting 41. Can be installed. It should be noted that when the unit 1 is installed, the flange portion 121 of the support body 12 positioned on the upper surface of the plate-shaped partition body 2 is bolted directly by the pressing metal fitting 41 without using the cover 42 to form a plate-like shape. You may attach to the partition body 2 airtightly.

[0025]

According to the unit of the present invention, the thermosetting resin is impregnated and cured in the pores at the outer edge of the upper end opening of the porous element to integrally fix the brim portion of the support to the element, Moreover, since the lower end opening of the element is closed and connected with the thermosetting resin, it is ensured that the filtered fluid containing fine particles short-circuits and flows into the upper chamber of the separation device main body through which the filtered fluid passes cleanly. To be prevented.

Further, in the separation apparatus of the present invention, the inside is divided into an upper chamber and a lower chamber by a plate-shaped partition body having a plurality of through holes, and the upper chamber is blown with a gas for backwashing. Since the unit and the diffuser 4 are arranged and the unit is airtightly held in the through hole of the plate-shaped partition member, the unit can be installed so as to hang from the upper chamber to the lower chamber.
The unit can be easily installed and installed in the separator body, and at the same time maintenance such as replacement can be easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a filter unit of the present invention.

FIG. 2 is a side sectional view in which a fixed state of a filter element attached to a filter unit is partially omitted.

FIG. 3 is a partially cutaway side view showing an embodiment of a separation device incorporating a filter unit.

FIG. 4 is an enlarged side sectional view taken along the line X-X in FIG.

FIG. 5 shows another embodiment of the separating device in a partially cutaway side view.

FIG. 6 shows a still further embodiment of the separating device in a partially cutaway side view.

[Explanation of symbols] 1 Filter unit 11 filter elements 111 Top opening 12 Support 112 Lower end opening 13 Outer edge 14 Lid 15 棧 2 plate partition 21 through hole 3 Gas outlet 31 nozzles 4 diffuser 41 Presser bracket 42 cover 5 packing A separation device body A-1 Upper chamber A-2 Lower chamber

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshimi Takiguchi 2480 Santo, Hiratsuka-shi, Kanagawa Mitsubishi Plastics Co., Ltd. Hiratsuka Plant (72) Inventor Takayuki Watanabe 2480, Sanchi, Hiratsuka-shi, Kanagawa Mitsubishi Plastics Co., Ltd. Hiratsuka Plant (56) References Japanese Unexamined Patent Publication No. 7-8728 (JP, A) Actual flat 6-85022 (JP, U) Actual flat 6-72620 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B01D 29/50 B01D 29/66 B01D 39/16 B01D 46/24

Claims (3)

(57) [Claims] 1. A hollow porous plug having pores of a predetermined pore size.
A filter unit in which a filter element made of a plastic is formed, and a plurality of the above-mentioned filter elements are integrally fixed to a support body forming a flange portion at the outer edge of the opening of the upper end of the filter element and the lower end opening is closed. There, the support is formed of a thermosetting resin in a band shape wider than the outer diameter of the filter element, and through holes through which the filter element is inserted are formed in a row in the support, and the filter element is formed in the through hole. Insert a thermosetting resin between the inner surface of the through hole and the outer surface of the filter element to impregnate and harden the pores at the outer edge of the filter element opening, fixing the filter element integrally to the support, and opening the lower end opening of the filter element. The filter unit is characterized in that it is closed with a thermosetting resin . 2. The lower part of the filter element is connected to each other.
The filter unit according to claim 1, wherein the filter unit is fixed.
knit. 3. The filter unit according to claim 1 or 2.
A separation apparatus comprising the door is divided into an upper chamber and a lower chamber inside thereof a plurality of through holes to comprise a plate-like partition member, the hole portion of the plate-shaped partition member, the hole Part
Insert the filter element and place the collar of the support on the upper surface of the plate-shaped partition.
Airtightly holding the filter unit installed by overlapping the parts , the filter element is hung from the upper part to the lower part, and in the upper chamber, a gas for backwashing is provided above the upper end opening of the filter element. A separation device, characterized in that the air outlets are installed opposite to each other.