JP2002126424A - Filter for filtration device and tool for winding filter media used for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter for filtration device which is easily and inexpensive ly manufactured, capable of using filter media having different density according to the intended purpose and to which only a small volume of waste deposits at the time of disposing the waste after use. SOLUTION: The filter for filtration device is formed by winding sheet like filter media made of nonwoven fabric having width wider than the length of an inside cylinder having many through-holes on the peripheral surface in the axis line direction on the outer peripheral surface of the inside cylinder. A part of the filter media is folded back, which is projected outward from both end parts of the inside cylinder toward the inside cylinder, inserting a cylindrical body with flange into the folded part to fix the filter media and engaging the outside cylinder having many through-holes with the outer peripheral surface of the filter media wound on the inside cylinder to hold. A jig for winding the sheet like filter media on the outer peripheral surface of the inside cylinder of the filter for the filtration device is formed by providing a pair of rollers on the upper parts of side plates arranged on both end parts of a pedestal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter used for a filter for purifying a fluid such as water, oil or air, and a jig for winding a filter medium used therefor. More specifically, for example, it is provided in the middle of piping connected to cleaning equipment for degreasing oil in fluids such as various solutions used for industrial or business purposes, and cutting equipment for processing metals and the like. Filter for use in removing solid foreign substances and the like in a fluid passing through the filter by being loaded into a filter provided, and a jig for winding a filter medium used in manufacturing the filter It is.

[0002]

2. Description of the Related Art Conventionally, as a filter for a filter as described above, for example, a filter material (element) made of a thread-like or string-like fiber material is provided on the outer peripheral surface of a metal cylindrical body having a large number of through holes on the peripheral surface. A wound filter (commonly referred to as a wound filter) or a sheet-like filter material such as a nonwoven fabric folded in a zigzag shape is interposed between metal or synthetic resin inner and outer cylinders having a large number of through holes on the peripheral surface. Are widely used.

However, all of the above-mentioned conventional filters have a structure in which the filter medium and the cylindrical body are assembled so that they cannot be easily separated as one unit, so that their manufacture and assembly are troublesome, and the purpose and purpose of use are not limited. If it is necessary to use filters having different filtration functions depending on the conditions, a plurality of types of units using filter media having different transmission densities must be prepared.

Further, when replacing the filter, the entire unit must be replaced, which is uneconomical. Further, when the used filter is discarded, it is difficult to separate the filter medium from the cylinder. , Difficult to separate and recycle,
There are problems such as an increase in the disposal capacity. For example, since the wound filter is fixed firmly so that the wound thread cannot be unraveled, it is difficult to separate the wound thread from the cylindrical body, and since a large amount of thread is wound, a large amount of waste is generated. In addition, as described above, there are two types of filters in which the inner and outer cylinders are made of metal and those made of synthetic resin.However, since the non-woven fabric and inner and outer cylinders cannot be separated, the amount of waste is extremely large. Become.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems, and can be manufactured easily and inexpensively, and it is possible to use filter media having different densities as appropriate according to the application and purpose of use. An object of the present invention is to provide a filter for a filter which can be used and has a small waste capacity when disposed after use. It is another object of the present invention to provide a filter medium winding jig suitable for manufacturing the above filter for starting filtration.

[0006]

Means for Solving the Problems In order to achieve the above object, a filter for a filter according to the present invention and a jig for winding a filter medium used therein have the following constitution.

That is, the filter for a filter according to the present invention comprises:
On the outer peripheral surface of the inner cylinder having a large number of through holes on the peripheral surface, a sheet-like filter medium made of a nonwoven fabric or the like having a width greater than the axial length of the inner cylinder is wound a plurality of times, and the inner diameter of the filter medium is smaller than that of both ends of the inner cylinder. Fold the outwardly protruding part inward of the inner cylinder, insert the flanged cylinder inside the folded part and fix the filter medium, and on the outer peripheral surface of the filter medium wound around the inner cylinder, An outer cylinder having a large number of through holes on the peripheral surface is fitted and held.

A jig for winding a filter medium according to the present invention is a jig for winding a sheet-like filter medium on an outer peripheral surface of an inner cylinder in the above-mentioned filter for a filter, and is provided at both ends of a pedestal. A pair of rollers are rotatably provided on the upper part of the side plate.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on an embodiment shown in the drawings. FIG. 1 is a partially cutaway front view showing an embodiment of a filter for a filter according to the present invention.

A filter 1 for a filter according to the illustrated example has an inner cylinder 11 having a large number of through holes 11a on a peripheral surface thereof, and a sheet-like filter medium 12 made of a nonwoven fabric or the like wound on the outer peripheral surface of the inner cylinder 11.
And a cylindrical body 13 with a flange 13a for fixing the filter medium 12, and an outer cylinder 14 arranged on the outer peripheral surface of the filter medium 12 and having a large number of through holes 14a on the peripheral surface.

A filter medium 12 having a width greater than the axial length of the inner cylinder 11 is wound around the outer peripheral surface of the inner cylinder 11 a plurality of times, and a portion 12 of the filter medium 12 protruding outward from both ends of the inner cylinder.
a is folded inside the inner cylinder 11, the flanged tubular body 13 is inserted inside the folded portion to fix the filter medium 12, and the filter medium 12 is wound around the inner cylinder 11. This is a configuration in which the outer cylinder 14 is fitted and held.

As shown in FIG. 2, both ends of the inner cylinder 11 have a circular opening 15a at the center and a short cylinder 1
A disk-shaped end plate 15 having a base plate 5b is provided. Each of the end plates 15 has a configuration in which the short cylindrical portion 15b is fitted to the outside of each end of the inner cylinder 11 and is integrally fixed by welding or the like. In a protruding state.

The method of winding the filter medium 12 around the outer peripheral surface of the inner cylinder 11 is appropriate. For example, the winding can be easily performed by using a winding jig 2 as shown in FIG. That is, the winding jig 2 in the illustrated example has a configuration in which a pair of rollers 23 are rotatably provided on the upper portions of side plates 22 provided at both ends of the pedestal 21, as shown in FIG. A filter medium 12 wider than the axial length of the inner cylinder 11 is placed, and the inner cylinder 11 is placed thereon. The end of the filter medium 12 is placed on the inner cylinder 11 as shown by a chain line in FIG. Along
By rotating the inner cylinder 11 together with the filter medium 12 in the direction indicated by the arrow in the figure, the filter medium 12 can be easily wound around the outer peripheral surface of the inner cylinder 11.

The length of the filter medium 12 may be appropriately set in consideration of the winding thickness and the like. In this case, the filter medium 12 is cut into a predetermined length before winding on the inner cylinder 11. Alternatively, a predetermined amount may be wound around the inner cylinder 11 and then cut.

After the filter medium 12 is wound around the outer peripheral surface of the inner cylinder 11 as described above, both ends of the filter medium 12 are folded inward into the inner cylinder 11 as shown in FIG. The cylindrical body 13 with a flange is inserted inward, and the cylindrical body 13
The filter medium 12 is fixed between the inner tube 11 and the inner tube 11. Next, the outer cylinder 14 is put on the outside of the filter medium 12 as shown in FIG. 1. At this time, when the projecting parts such as the short cylinder parts 15 b are provided on the outer peripheral surfaces of both ends of the inner cylinder 11, both of them are provided. The contact resistance (frictional resistance) between the filter medium 12 and the outer tube 14 between the protruding portions (short tube portion 15b) is reduced, and the outer tube 14 can be mounted smoothly.

Further, as shown in FIG.
When the outer tube 14 is mounted, both ends of the outer tube 14 are located outside the protruding portion (tubular portion 21b), and the filter medium 12 between the both ends of the outer tube 14 and the protruding portion is appropriately compressed. State
In this configuration, the outer cylinder 14 is prevented from falling off and fixed by the elastic restoring force of the filter medium 12.

The filter 1 for a filter manufactured as described above is used by being mounted on a filter, and the structure of the filter is appropriate. FIG. 6 shows an example of the filter. That is, the filter 3 in the illustrated example has a supply port 32a and a discharge port 32b for fluid at the top of a bottomed cylindrical main body case 31.
, And a packing 33 is interposed between the main body case 31 and the lid 32.

A bolt 34 for connecting the main body case 31 and the lid 32 is provided at a central portion in the main body case 31 and the lid 32, and a lower end of the bolt 34 is attached to a lower part of the main body case 31. A tubular fixing nut 35 is screwed into the integrally provided cylindrical fixing nut 35, and a cylindrical cap nut 36 is screwed into an upper end portion of the bolt 34. By turning the cap nut 36 to remove the nut 36 from the bolt 34, or by removing the bolt 34 from the fixing nut 35, the lid 32 can be detached from the main body case 31. It can be inserted into and removed from the main body case 31.

A filter support member 37 is provided near the lower end of the bolt 34 so as to be vertically movable. The filter 1 is mounted on the support member 37, and the support member 37 and the bottom surface of the main body case 31 are connected to each other. The upper end of the filter 1 is closed by the compression coil spring 38 interposed between
Is formed so as to be in pressure contact with the cylindrical projection 32c provided in. In the figure, reference numeral 39 denotes a drain bolt provided on the bottom of the main body case 31;
2a and the outlet 32b each have a coupling material C
1. Fluid supply pipe and discharge pipe connected via C2.

In the above configuration, when a fluid such as oil is supplied from the fluid supply pipe P1 to the fluid supply port 32a via the coupling material C1, the fluid entering the supply port 32a is
After flowing between the main body case 31 and the filter 1 and passing through the filter medium 12 through a through hole 14 a formed in the outer cylinder 14 of the filter 1, it flows into the inner cylinder 11 through the through hole 11 a of the inner cylinder 11, The coupling material C2 is supplied from the upper outlet 32b.
And discharge to the outside via the discharge pipe P2.

As described above, when the fluid such as oil passes through the filter medium 12, foreign matter such as sludge in the fluid is removed and filtered.
When the projecting portions such as the short tube portion 15b are provided on the outer peripheral surfaces of both ends of the filter member 1, the filter medium 12 between the both projecting portions (short tube portion 15b) is prevented from being excessively compressed, and the fluid smoothly passes through the filter medium. And can be filtered well.

Part of the solid foreign matter such as sludge in the fluid removed as described above accumulates at the bottom between the filter 1 and the main body case 31, but the solid foreign matter accumulated at the bottom is removed from the main body case. Drain bolt 3 provided at the bottom of 31
By removing 9, it is possible to discharge to the outside from the drain hole 35 a formed in the cylindrical fixing nut 35 and the female screw hole of the drain bolt 39.

The type of the filter medium 12 can be appropriately changed according to the size of the foreign matter to be removed. For example, in the case of a non-woven fabric, a plurality of types having different thicknesses and different densities of the fibers constituting the non-woven fabric are used. It can be appropriately selected from nonwoven fabrics and used. When the filter medium 12 is clogged after a predetermined period of use, the filter medium may be replaced. In any of the above cases, only the filter medium is replaced and the inner cylinder 11 and the outer cylinder 1 are replaced.
4 etc. can be used as they are.

Further, when the filter medium 12 is replaced, even if the filter medium such as a non-woven fabric is wet and expanded due to a liquid such as oil, for example, the short cylindrical portion 15b or the like is formed on the outer periphery of both ends of the inner cylinder 11 as described above. When the protrusion is provided, the outer cylinder 1 other than the protrusion is provided.
4 and the filter medium 12 can be reduced in contact resistance.
Can be easily pulled out.

In the above embodiment, the projecting portion is formed by fitting the end plate 15 having the short cylindrical portion 15b on the periphery to the both ends of the inner cylinder 11. Any other appropriate method, such as forming a protruding portion by bulging outward in the radial direction.

Although FIG. 6 shows one filter 1 according to the present invention provided in the filter 3, a plurality of filters 1 may be provided. FIG. 7 shows an example in which two filters 1 similar to the above are arranged and accommodated in a filter 3 in the longitudinal direction. The body case 31 and the bolt 34 are longer than those in the above-described example, and the spacing member 16 is interposed between the two filters 1.1. The spacing member 16 is slidably disposed along the bolt 34, and is provided with a communication hole 16a communicating with the inside of the inner cylinder 11 of the upper and lower filters 1. Other configurations are the same as in the above example.

When a plurality of filters 1 are accommodated in one filter 3 as described above, more fluid can be filtered by one filter, and the filtration efficiency can be improved.

[0028]

As described above, since the filter for a filter according to the present invention has the above-described structure, the following operation and effect can be obtained.

That is, the filter medium 12 such as a nonwoven fabric and the inner cylinder 11, the outer cylinder 14, and the cylinder 13 for fixing the filter medium can be easily separated from each other. When replacing the filter with a new filter or a filter having a different filtering function, only the filter medium needs to be replaced. Therefore, the inner cylinder 11 and the outer cylinder 1 other than the filter medium
4 is economical because it can be used repeatedly as it is.
Moreover, since only the filter medium is replaced and discarded, there is no need to separate and collect as in the conventional case, and the amount of waste can be greatly reduced.

Further, it is possible to appropriately change the filtering function and the filtering capacity only by changing the filter medium alone. For example, the type of the filter medium and the size of the sludge to be removed can be changed according to the type of the fluid to be filtered and the size of the sludge to be removed. The material can be changed. For example, a filter medium resistant to acid is selected for an acidic liquid, and a filter medium resistant to alkali is selected for an alkaline liquid. Alternatively, select a strong filter medium for the solvent-based liquid,
The filter medium can be freely selected and used.

Further, when the protrusions such as the short tube portion 15b are provided on the outer peripheral surfaces of both ends of the inner tube 11, the contact resistance between the filter medium 12 and the outer tube 14 between the protrusions is reduced, and the outer tube 14 can be smoothly attached and detached. Especially when the filter medium such as non-woven fabric is wet and expanded by the liquid such as oil,
The outer cylinder 14 can be easily pulled out.

The filter medium winding jig 2 according to the present invention has a very simple structure in which a pair of rollers 23 are freely rotatably provided on side plates 22 provided at both ends of a pedestal 21. The sheet-like filter medium 12 can be easily and quickly wound around the outer peripheral surface of the inner cylinder 11.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal front view showing an embodiment of a filter for a filter according to the present invention.

FIGS. 2A and 2B are a plan view and a partial front view of an end of an inner cylinder.

FIG. 3 is a perspective view showing an example of a filter medium winding jig.

FIG. 4A is a plan view of a state in which a filter medium is wound around an inner cylinder using the jig. (B) is the front view.

FIG. 5 is an explanatory view of a state in which a filter medium wound around an inner cylinder is fixed by a flanged cylinder.

FIG. 6 is a longitudinal sectional view showing an example of a filter using the filter for a filter according to the present invention.

FIG. 7 is a longitudinal sectional view showing an example of a filter using a plurality of filters for a filter according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filter for filter 11 Inner cylinder 12 Filter material 13 Flanged cylinder 14 Outer cylinder 15 End plate 2 Winding jig 21 Pedestal 22 Side plate 23 Roller 3 Filter 31 Main body case 32 Lid

Claims (3)

[Claims] 1. A sheet-like filter medium made of a nonwoven fabric or the like having a width greater than the axial length of the inner cylinder is wound around the outer peripheral surface of the inner cylinder having a large number of through-holes a plurality of times. The portion protruding outward from both ends of the cylinder is folded inward of the inner cylinder, and the filter medium is fixed by inserting a flanged tubular body into the inside of the folded portion, and the filter medium is wound around the inner cylinder. A filter for a filter, characterized in that an outer cylinder having a large number of through holes in the peripheral surface is fitted and held on the outer peripheral surface of the filter. 2. The filter for a filter according to claim 1, wherein projections are provided on outer peripheral surfaces of both ends of the inner cylinder. 3. A jig for winding a sheet-like filter material around an outer peripheral surface of an inner cylinder in the filter for a filter according to claim 1, wherein a pair of rollers is provided on upper portions of side plates provided at both ends of a pedestal. A jig for winding a filter medium, which is rotatably provided.