JPS59136113A - Flocculating filter, production thereof and flocculating filter apparatus having the filter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coagulating furnace material, a method for producing the same, and a coagulating filtration device having this coagulating filter material.

Filtration devices for concentrating liquid aerosols from streams of pressurized gas are currently widely used. The use of compressors in agglomerating oil or water aerosols from a stream of pressurized air is very common.

Various filtration devices are known for this purpose, but most of them use a cylindrical P material through which pressurized gas flows from the inside to the outside or from the outside to the inside. It is becoming more fluid.

In the former filtration device, pressurized air to be filtered is supplied from one end of the device in the p-axis direction, passes through the device,
It is exhausted to the atmosphere via its radial outer surface.

In the latter filtration device, pressurized air is discharged through the device from the external surface, and the filtered air is passed through the device from one end to the interior.
Exhausted axially.

The furnace material commonly used in this type of filtration device consists of a nonwoven material of borosilicate microfibers, usually impregnated with a resin to increase the strength of the material.

At least on the downstream side of the p-material tube, the tube is supported by a porous sleeve, and the tube is likewise supported on the upstream surface to prevent rupture of the filtration layer and backflow within the device. You can also prevent it from happening.

1 Supporting the filtration layer can be done in various ways. For example, this can be done with a perforated metal sleeve, a sleeve made of synthetic fabric such as nylon or polyester, or supported by a sleeve made of other filtration materials with greater strength than the borosilicate microfiber sleeve. can. Many variations of this furnace material are possible.

To coagulate filtration of a liquid aerosol from a gas stream, the condensed liquid is discharged from the filtration device, the filtered and condensed liquid is re-blown into the filtered gas, and
It is necessary to prevent it from being transported through the filtration device.

Therefore, the usual method is to fit the re-blowing prevention wall on the lower side of the connection material t and the rr material - between the p material and its support. Re-blowing prevention walls are typically highly porous, grooved, and relatively thick, allowing the condensed liquid to drip by gravity from the bottom of the wall through the grooves. It has become da.

The filtered gas passes quite freely through the porous anti-reblowing wall, and re-blowing of the filtered liquid is largely prevented.

Typically, the anti-reblowing wall consists of a microfiber filtration material and a
After assembly of a device consisting of one or more supports,
Fitted into this device.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a filtration device that is extremely simple, inexpensive, and easily manufacturable, and that overcomes the deficiencies of conventional furnace materials.

The flocculating furnace material according to the invention consists of a tubular anti-reblowing wall, the side of which is covered with unimpregnated microfibers.
Directly coated to the required thickness for filtration.

In the method for producing a flocculating furnace material according to the present invention, a porous tubular mold is prepared, the first surface of the tubular re-blowing prevention wall is positioned adjacent to the mold, and microfibers containing no resin are re-blown. moving from the second surface to the first surface through the blow-in prevention wall,
The microfibers are laminated directly onto the second surface of the anti-reblowing wall.

The simplest form of a coagulating filtration device according to the present invention consists of only two members: a reblowing prevention wall and a non-impregnated microfiber layer molded onto one surface thereof.

In filtration devices designed to flow from the inside to the outside of the furnace material, microfibers are deposited on the interior surface of the anti-reblowing wall.

In this case, the re-blowing prevention wall has sufficient strength to withstand the pressure applied radially outward by the gas flow, and no support is required radially outside the microfiber layer. .

In filtration technology, it is customary to provide protection against back pressure within the device, and it is desirable to provide a porous, fairly rigid sleeve adjacent the radial inner surface of the microfiber layer. It may also be desirable to provide a similar sleeve adjacent to the external surface of the anti-reblowing wall. Molded onto the surface.

Reblowing 11)7 Since it is usually not possible for the stop wall to have sufficient strength to withstand buckling, in this type of furnace material, a porous and fairly hard sleeve is used for reblowing. It is provided in contact with the inner surface of the blow-in prevention wall. Also,
A similar sleeve surrounds the external surface of the microfiber layer,
This prevents the layers from collapsing and creating back pressure within the device.

The present invention can be applied to any type of anti-reblowing wall and to various types of microfiber layers. Preferably, however, the anti-reblowing wall is constructed of a felt-like material consisting of fibers of 5 to 50 microns in diameter, and the wall thickness is between 1.5 and 8 mm. It's a bite.
The microfibers are borosilicate microfibers with a diameter of 0.05 μm to 10ξμm, and the thickness of the layer is 2
It is desirable that the range is from m+11 to 15 am.

The flocculating purge apparatus according to the present invention comprises a furnace material having any of the forms described above, the axial end of the furnace material being in contact with each end cap, at least one of which It has openings for gas to flow into the interior of the furnace material.

This p-filtering device must be airtight near the axial end of the furnace material, and the area where the furnace material comes into contact with the end cap is sealed with an appropriate counterweight device. That's very promising. For example, it is possible to use a dip seal using methane, a sealing device using a knife, a device made by destroying F material, or a labyrinth seal.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows the flow of compressed air from the inside of the furnace material to the outside.
Oil or water aerosol f: A perspective view of a flocculating furnace material for filtering.

This furnace material is composed of a tubular re-blowing prevention wall (1) made of a felt-like material, the felt-like material being polyester or nylon or a mixture of both, or
It is made of polypropylene fibers with a fiber diameter of 5 to 50 microns. The prevention wall (1) is either seamless or formed into a tubular shape by joining flat plates with a suitable device.

The inner surface of the prevention wall has a diameter of 0. [)5 microns to 1
Layer (2) of 0 micron non-impregnated borosilicate microfibers
It is coated directly by The thickness of the re-blowing prevention wall (1) is approximately 15 mm to 13 am, and the thickness of the microfiber layer is 2 mm to 15 mm.
) is weak on its own, but the re-blowing prevention wall (1) provides the circumferential strength and axial strength necessary for using the furnace material in continuous operation.

2 and 6 show a method of manufacturing the furnace material shown in FIG. 1.

The mixing tank (one person) contains a slurry of a suspension of borosilicate microfibers, which is adjusted to a pH of approximately 3 to facilitate fiber dispersion.

The slurry does not contain any resin.

The tank (1A) is equipped with motor-driven impellers (2 people) to uniformly stir the contents of the tank, promote fiber dispersion, and even out the fiber concentration. .

A pump (3) is connected to the outlet of the tank and, when the supply valve (5) is opened, discharges the volume of slurry into the tank (4). When the supply valve (5) is closed, pressurized air is supplied from the supply source (6) to the tank (4), and the slurry is sent from the tank (1A) to the inside of the mold (8) via the valve (7). It looks like this.

The mold (8) consists of an upper part (8a) and a lower part (8h), these two parts being aligned in the axial direction. Lower part (8
13) is connected to the upper part (8a) by the pneumatic ram (10).
Move in the direction of , and away from . When the lower part (8b) is positioned upwardly as shown in FIG. 2, the two parts (8c) and (8d) of the wall part contact at (8c). Note that each wall is perforated.

The part (8b) is moved downwards to open the mold and place the preform anti-reblowing wall (9)'k into either part of the mold. Thereby, when the mold is closed, the prevention wall (
9) is pushed radially inside parts (8c) and (8d).

When the slurry is pressurized and injected into the mold through the opening (11), the re-blowing prevention wall (9) is inserted into the wall portion (8c) and (
8d) radially close to the interior. Moisture coming out of the slurry passes through the re-blowing prevention wall and the openings in the walls (8c) and (8d).

The microfibers in the slurry do not pass through the anti-reblowing wall (1), but remain on the internal surface of this wall, and the microfiber filtration material is laminated and in direct contact with the internal surface of the anti-reblowing wall.

The liquid that has passed through the walls (8c) and (8d) is collected in a discharge tank (13) and pumped up by a pump (14) to reach a tank (15). In the tank (15),
A motor-driven impeller (16) mixes the slurry in the other buckets.

Next, the tank (IA)K is pumped by the pump (17).
The injection is again indicated from the tank (15).

When the measured slurry for one batch is poured into the mold (8) and the liquid passes through the walls (8C) and (8d), the required amount and thickness of microfibers are formed in the re-blowing prevention wall (1). Laminated on the internal wall soil. After placing a batch of slurry into the mold, pressurized air is supplied to partially dry the molding apparatus.

After partially drying in this way, the mold is opened and
The anti-reblowing wall with the molded microfiber layer is dried in an oven to form the final polyurethane.

FIG. 4 shows how the filter shown in FIG. 1 is used in a filtering device designated by reference numeral (20).

This filtration device (20) has a re-blowing prevention wall (21)'! r
A furnace material similar to that shown in the first figure is provided, having a borosilicate microfiber layer formed on its internal surface. This P# coats the outer surface of the perforated cylinder (24). This cylinder (24) is integral with the cap (23) at the bottom of the filter and is made of a fairly hard material.

The cap (25) on the top of the filtration device (20) has a screw (
26) has been added to the cylinder (24). The cap (25) is a short threaded tube (27) 'ff
i, whereby the e-passing device has no-using (28
) is attached. Note that a sealing device (29) is provided between the nozzle (28) and the filtering device.

The sealing between the axial end of the P@ and the top and bottom cap surfaces in contact with the furnace material, for example the bottom (port 2) of the filtration device, is achieved by using a suitable sealing cap. Kuland (33)
It is made by K.

In use, the P-filled gas is supplied to the inlet (filter O) of the filter housing, from where it passes through the filter (20).
flows inside.

The gas passes through the holes (31) in the cylinder (24);
The liquid aerosol in the gas is absorbed by the fiber contact layer (22)
is aggregated by The condensed liquid drips by gravity by the anti-reblowing wall (21) and is collected at the bottom of the PyM device housing, from where it is dripped as needed.

FIG. 5 shows another filtration device that utilizes the p-efficiency shown in FIG.

Similar to FIG. 4, the furnace material (40) is attached to the bottom cap (42).
) surrounds a perforated cylinder (41) which is integral with the cylinder (41). The cap (43) is screwed onto the upper end of the cylinder (41), and the cap (46) contacts the E material (
44x45) has a sealing compound attached. The cap (46) is provided with a short cylinder (46) with a male thread.

This type of filtration device uses the air discharged from pulp, pistons, etc. in a manner similar to air silencers and oil classifiers in oil-contaminated pneumatic equipment.

The short tube (46) is a suitable pipe connection device that fits directly into the mouth of a device such as a pneumatic valve. It is discharged from the furnace material. The micro-fiber filtration layer aggregates the oil dripping from the re-blowing prevention wall, and the filtration device also has the effect of reducing discharge noise.

The filtered air can be released directly to the atmosphere.

The filter bag M shown in FIG. 5 includes a receiving arm (47).

This receiving arm (47) can be attached to and removed from the bottom cap. The receiving arm (47) has a drip opening through which air and other liquid contaminants collected within the receiving arm are discharged.

FIG. 6 shows a filtration device (50
)k is shown. This filtration device consists of a short threaded tube (
51), the woman is connected to the pneumatic device by 9
, and the axis of the filter is horizontal rather than vertical.

In this case, the collection pan (52) is a cap (53X54)
and extends downwardly from the bottom of the furnace material to collect liquid dripping from the filtration device through the re-blowing prevention wall. Collection tray (52)l
/j is provided with a drip port (55).

FIG. 7 is a diagram showing the structure of another filtration device including the furnace material shown in the first diagram.

This furnace material (60) H1 is made of a perforated cylinder or a coil spring (62), and is made of microfibers; local layer (61).
) is supported on the internal surface of the This assembly is
The cap (63
) and the cap (64).

The cylinder or spring (62) prevents backflow in this filtration device, which is designed to flow from the inside to the outside of the filtration device, similar to the RI device shown in FIGS. 4-6, by bursting bubbles in the furnace material. prevent it from happening.

In all of the filtration devices shown, the anti-reblowing wall can be radially surrounded on the outside by a perforated cylinder or other porous reinforcing sleeve, if desired.

In addition, in these filtration devices, to prevent backflow,
A layer of microporous filaments fL may be interposed between the microfiber contact layer and the radial inner cylinder supporting it.

The porous fibers serve to prevent backflow from occurring due to migration of microfibers from the filtration layer through the internal support cylinder. Of course, if the pores of the internal support cylinder are sufficiently small, the porous fibers may be folded.

The present invention is also applicable to the furnace material of a filtration device, which flows from the outside to the inside of the furnace material. In this case, the i-black fiber p overlayer is molded onto the external surface of the anti-reblowing wall, and the mold used for its molding is adjusted accordingly. The construction of a filtration device utilizing such furnace material will be obvious to those skilled in the art.

It goes without saying that the furnace material according to the present invention can be manufactured by molding methods other than those described herein and can be incorporated into various filtration device structures.

[Brief explanation of the drawing]

FIG. 1 is a further perspective view of the furnace material according to the present invention. FIG. 2 is a sectional view of a concave mold used for manufacturing the furnace material shown in FIG. FIG. 6 is a schematic diagram of a molding apparatus used for manufacturing the P material shown in FIG. 1. FIG. 4 shows a second embodiment of the P material according to the present invention. Figures 5 to 7 show the <1i
) is a diagram showing an example of the method. (1) Re-blowing prevention wall (1A) Mixing tank (2) Microfiber layer (2 people) Impeller (3) Pump (
4) Tank (5) Supply valve (6) Supply source (7) Valve (8) Mold (8a) (8b) (8c) (8d) section (9) Preform re-blowing prevention wall (10) Pneumatic ram ( 11) Opening (16) Discharge tank (14X17) Pump (15) Tank
(16) Impeller (20) Filtration device (21
) Re-blowing prevention wall (22) Micro # fiber layer (25X25
) Cap (24) Cylinder (26) Screw (2)
7) Short tube (28) No Ujing (29) @
Stopping device (60) Inlet (31) hole (
Filter 2) Bottom (63) Sealing compound (40) P material (41) Cylinder (42X43) Cap (44X45)
Part (46) Short tube (4)) Receiving arm (
50) f' passing device (51) short tube (52)
Collection plate (53) C'54) Cap (60) P material (
61) Microfiber layer (62) Coil spring (63X6
4) Camp Patent Applicant Representative Patent Attorney So Takezawa −■P=.

Claims (1)

[Claims] (1) It is characterized by having a tubular re-blowing prevention wall, the surface of which is directly coated with microfibers containing no resin impregnation to a thickness necessary for filtration. Coagulation furnace material. (2) Claim (1) characterized in that the inner surface of the re-blowing prevention wall is coated with microfibers.
The flocculating furnace material described in section. (5) Claims (1) or (2) characterized in that the re-blowing prevention wall is composed of a felt-like material made of fibers with a diameter of 5i croms to 50 microns.
The flocculating furnace material described in section. (4) The coagulating furnace material according to any one of claims (1) to (b), characterized in that the thickness of the re-blowing prevention wall is 1.5 mm to 8 mm. . (5) The fiber is a borosilicate microfiber with a diameter of 0.05 to 10 microns, as described in any one of claims (1) to (4). coagulation furnace material. (6) The thickness of the Kaj coating is 2 to 1.
5. The flocculating furnace material according to any one of claims (1) to (5), characterized in that there is a .tau. (7) A coagulation filtration device consisting of a coagulation furnace material, a cap, and an airtight sealing device, in which the coagulation P8 is equipped with a re-blowing prevention wall, the side of which filters the resin-impregnated material with ring-free microfibers. a flocculating furnace material that is directly coated with a thickness necessary for the furnace material, a cap that contacts each end of the furnace material and has an opening at least at one end for allowing gas to flow into the furnace; and each cap. and an airtight sealing device capable of sealing between each end of the furnace material. (8) A coagulating filtration device according to claim (7), characterized in that a porous, generally rigid sleeve is provided adjacent to the radial interior surface of the furnace material. (9)? The radial interior of pU is micro I#! agglomerated E according to claim (8), characterized in that between the microfiber layer and the substantially rigid sleeve there is a layer of microporous material. (10) A perforated, substantially rigid sleeve is provided adjacent the radial outer surface of the furnace material. The coagulation filtration device according to any one of paragraphs 11 to 11. (11) A porous tubular mold is prepared, and adjacent to the surface of the mold, the first part of the tubular re-blowing prevention wall is provided.
A circumferential surface is installed, and a resin-free microfiber layer is placed on the first circumferential surface from the second circumferential surface.
Sink through the re-blowing prevention wall to the circumferential surface. A method for producing a flocculating furnace material, which comprises laminating the microfiber layer directly on the second surface of the re-blowing prevention wall so as to have a thickness necessary for filtration, and drying the laminated layer. (12) Re-blowing prevention walls are installed radially within the mold, the slurry flows from the inner surface of the re-blowing prevention wall to the outer surface, and the microfiber layer is laminated to the inner surface of the wall. The method described in (11). (1) The mold is divided into two parts in the axial direction, and the mold is opened by moving the two parts apart in the axial direction, and the re-blowing prevention wall is inserted into one part, Claims comprising moving the image portion axially in close proximity to surround the reblowing wall, flowing the slurry to deposit the microfiber layer, and opening the PF mold to expel the flocculant material. The method according to item (11) or item (12).