JPH03137922A - Module for filtration - Google Patents

Abstract

PURPOSE:To reduce to the minimum the number of members to be replaced when the function of a filter material is lowered by mounting nemovably a header, wherein a filter unit can be fixed, to the opening part of a frame body. CONSTITUTION:An outer frame 34 is placed on a packing mold 45 and ceramic membranes 31 are erected by utilizing recessed parts 46. The outer frame 34 is filled with an adhesive resin and this resin is cured to form a packing material 35. An assembled filter unit 30 is inserted in a frame body 21. The first support 32 is fitted in the frame body 24 of the first header 27 and supporters 38 are are supported so as to be held between both guide plates 22, 23 and the second support 33 comes into contact with the end surface of the frame body 21. These constitutional members are fixed by fixing bolts 41 to assemble a filter module. This filter module is immersed in sludge to be treated to perform filtering work. By this constitution, replacement can be easily performed and the number of members which must be disposed and replaced when the function of the ceramic membrane 31 is lowered can be reduced to the necessary min. degree.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a submerged filtration module.

Conventional technology Submerged filtration modules are made of tubular ceramic filter media, and are installed inside a microbial treatment tank, for example.
It is used for purposes such as filtering and removing only the clear liquid from the liquid to be treated with microorganisms.

FIGS. 6 and 7 illustrate a conventional submerged filtration module of this type. This filtration layer module has a plurality of tubular ceramic filtration media 1, and both ends of the filtration media 1 are supported by headers 2.3, so that the filtration media 1 are arranged in parallel at intervals. ing. One header 2 has a suction chamber 4 and a face plate 5, and one end of each ceramic filter medium 1 passes through the face plate 5 and opens into the suction chamber 4. These ceramic filter media 1 are fixed to the header 2 with an adhesive 6. The header 2 is also provided with a suction lower for communicating the suction chamber 4 to the outside.

The other header 3 has a recess 8 inside and is formed into a C-shape in cross section. The other end of the ceramic filter medium 1 is
It is inserted into this recess 8 and its open end is closed by the header 3. An adhesive 9 is filled in the recess 8 and hardened, and the ceramic filter medium 1 is fixed to the header 3 by the adhesive 9.

A pair of plastic guide plates 10 are provided between both headers 2.3 for the purpose of protecting the ceramic filter material 1 and providing a rectifying effect. This guide plate 10 and both headers 2 and 3 are fixed to each other using adhesive.

The immersion type filtration module having such a configuration is used, for example, in a microbial treatment tank 3!, as described above. ! !
immersed in the mixture. Then, as shown in FIG. 7, the mixed liquid 11 to be treated with microorganisms is made to flow, is rectified by the guide plate 10, and passes through the ceramic tube filter medium 1. At this time, if a negative suction pressure is applied to the suction lower, microorganisms 11 are filtered by the ceramic filter material 1, and the clear water produced by the filtration is discharged to the outside through the suction chamber 4 and the suction lower. .

Problems to be Solved by the Invention Since each filter medium 1 is made of ceramic, it has better anti-microbial attack properties and temperature resistance than conventional polymer-based filter materials, but after long-term use, the filtration Functionality declines.

Therefore, it is necessary to replace it with a good quantity. However, in conventional filtration modules, each filter medium is fixed with adhesive as described above, so even if a part of the ceramic filter medium 1 has deteriorated in function irreversibly,
any! Header 2.3 and guide plate 10 not damaged
The entire filtration module, including the filtration module, had to be discarded and replaced with a new one, resulting in the inconvenience of high costs.

Therefore, the purpose of the present invention is to solve these problems and to reduce to the necessary minimum the number of parts that must be discarded or replaced when the ceramic filter medium deteriorates in performance. do.

Means for Solving the Problems In order to achieve the above object, the present invention provides the following features: A pair of guide plates arranged in parallel, and a first header provided at one end side of the guide plates, so that the other end of the guide plates A frame body having an opening on the side is configured, a plurality of tubular filtration materials arranged in parallel are integrated to constitute a filtration unit, and the filtration unit can be inserted into the frame body from the opening and the frame body is A second header is removably attached to the opening side of the frame body to which a filtration unit inserted into the frame body can be fixed.

Operation According to such a configuration, the filtration module is assembled by inserting the filtration unit into the frame body through the opening, attaching the second header to the opening and fixing the filtration unit. When it becomes necessary to replace the tubular filter medium, the second header is removed from the opening and the filtration unit is taken out from the frame body, thereby disposing of the filtration unit whose function has deteriorated.

By replacing the filtration unit with a new one, 1.
A new filtration module can be assembled by reusing the frame body and the second header without completely destroying them.

Embodiment In FIGS. 1 and 3, reference numeral 21 denotes a frame body made of plastic, and has a pair of guide plates 22 and 23 in a direction perpendicular to the plane of the paper. These guide plates 22, 23 are arranged parallel to each other at a distance. These guide plates 22.23 on one end side of the guide plates 22.23
A frame 24 with a square hollowed out inner circumference is attached between them. Further, on one end side of the guide plate 22.23, a support plate 26 is provided between the end surfaces 25 of the guide plate 22.23 in a direction perpendicular to the paper plane.

One end portion of these guide plates 22 and 23, the frame body 24, and the support plate 26 constitute a first ladder 27.

On the other end side of the guide plate 22.23, a support member 28 is passed between the end faces 25 of the guide plate 22.23 in the direction perpendicular to the paper plane. And, by the other end of these guide plates 22, 23 and the support member 28,
A rectangular opening 29 is formed.

A filtration unit 30 is inserted into the frame body 21 . As shown in FIGS. 1 and 2, the filtration unit 30 includes a plurality of tubular ceramic filter media 31.
These ceramic filter media 31 are arranged parallel to each other at intervals by having both ends thereof supported by a first support body 32 and a second support body 33. . The second support body 33 includes an outer frame 34 made of polyvinyl chloride, whose outer periphery is formed into a square shape to match the end face of the opening 29 of the frame body 21, and whose inner periphery is hollowed out into a square shape. An epoxy resin filler 35 is filled into the outer frame 34 and cured. An interlocking portion 47 is formed at the boundary between the outer frame 34 and the filler 35 to prevent them from separating.

Each ceramic filtering medium 31 is supported by the filler II material 35 with one end passing through the filling material 35, and is open at a position passing through the filling material 35.

The first support body 32 has a recess 36 inside and has a cross section of C.
It is formed into a letter shape. The other end of the ceramic filter medium 31 is inserted into the recess 136, and its open end is closed by the first support 32 and adhesive 37. An adhesive 37 is filled in the recess 36 and hardened, and the ceramic filter medium 31 is fixed to the first support 32 by the adhesive 37. As shown in FIG. 1, the first support body 32 is fitted inside the frame body 24 of the first header 27, and the inside of this frame body 24 is connected to the ceramic filter medium 3.
1 is slidable in the length direction.

Ceramic filter material 3 between both supports 32 and 33
A plate-shaped supporter 38 is provided at an appropriate position in the length direction of the guide plate 1 to be sandwiched between the guide plates 22 and 23. This supporter 38 supports each ceramic filtering material 31 by passing through this supporter 38, thereby preventing the generation of excessive vibrations in each ceramic filtering material 31.

A lid-shaped second header 39 made of plastic is placed over the second support body 33 , and communication is established between the second header 39 and the second support body 33 into the inside of the ceramic filter medium 31 . A suction chamber 40 is formed. second header 39
is fixed to the guide plate 22, 23 and the support member 28 together with the second support body 33 by a fixing bolt 41, so that it can be attached to and detached from the frame body 21 at the position of the opening 29. Rubber packings 42 to which compressive force is applied by fixing bolts 41 are provided on both sides of the second support body 33.

Further, the second spatula 39 is provided with a suction port 43 for communicating the suction chamber 40 to the outside.

Next, a method of assembling a filtration module having such a configuration will be described. First, when assembling the filtration unit 30, as shown in FIG.
4, and the recess 4 formed in this filling mold 45.
6 to stand up the ceramic filter material 31. Then, if adhesive resin is filled inside the outer frame 34 and cured,
As shown in Figs. 1 and 2, ceramic filter media 3
A filling material 35 supporting 1 is formed. In addition, with the supporter 38 attached, the ceramic filtering medium 31 and the first support body 32 are fixed with an adhesive 37. In this way, the membrane unit 30 can be assembled at low cost without any machining.

The filtration unit 30 assembled in this way is then inserted into the frame body 21 through the opening 29 of the frame body 21. Then, the first support 32 is fitted into the frame 24 of the first header 27, and the support 38 is fitted into the frame 24 of the first header 27.
is supported between both guide plates 22 and 23, and the second
The support body 33 contacts the end of the frame body 21. Therefore, the second header 39 is placed over the second support 33 and fixed with fixing bolts 41, thereby assembling the filtration module as shown in FIG.

The filtration work performed by immersing such a filtration module into the sludge to be treated is the same as that shown in FIGS. 6 and 7 described above, so a description thereof will be omitted.

Although the frame body 21 and the filtration unit 30 are fixed to each other by fixing bolts 41 at the position of the second header 39, they are mutually movable W1vJ in the length direction of the ceramic filter material 31 at the position of the first header 27. It becomes. Therefore, for example, when the temperature of the sludge to be treated in which the filtration module is immersed is high, the guide plates 22 and 23, which are made of plastic and have a higher coefficient of thermal expansion than the ceramic filtration material 31, Free expansion is possible as shown in FIG. For this reason, ceramic i! A large tensile stress from the guide plates 22, 23 does not act on the 1'A material 31, and accidents such as destruction of the ceramic filter material 31 due to thermal stress are prevented.

If the ceramic [31] is damaged for some reason, loosen the fixing bolts 41, remove the second header 39, and pull out the membrane unit 30 from the opening 29. The extracted suggestion unit 30 is discarded.

Then, a new membrane module is assembled by using a new membrane unit 30 instead, reusing the frame body 21 and second header 39 shown in FIG. 3, and performing the same operations as described above.

Effects of the Invention As described above, according to the present invention, when it becomes necessary to replace the ceramic filter material of a filtration unit, only this filtration unit can be discarded and replaced, and the frame body and second header can be reused. A new filtration module can then be assembled. Therefore, a replacement filtration module can be constructed at low cost.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a filtration module according to an embodiment of the present invention, FIG. 2 is a sectional view of the filtration unit in FIG. 1, and FIG. An external view of the header, Fig. 4 is an explanatory diagram of the assembly process of the filtration unit, Fig. 5 is a sectional view showing the state in which the filtration module shown in Fig. Wg1 is thermally expanded, and Fig. 6 is a sectional view of the conventional filtration module. , FIG. 7 is a sectional view taken along the line ■-■ in FIG. 6. 21...Frame body, 22.23...Guide plate, 2
7... First header, 30... Filtration unit, 31
...Ceramic filter media, 3 pieces...Second header,
41...Fixing bolt.

Claims (1)

[Claims] 1. A frame body having an opening at the other end of the guide plate is formed by a pair of guide plates arranged in parallel and a first header provided at one end of the guide plates. A filtration unit is configured by integrating a plurality of tubular filtration materials arranged in parallel, and the filtration unit is configured to be insertable into the inside of the frame body through the opening and to be taken out to the outside of the frame body. . A submerged filtration module, characterized in that a second header capable of fixing a filtration unit inserted into the frame body is removably attached to the opening side of the frame body.