JPH10118634A - Filter apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the filtering capacity of a filter for a long period of time and to prevent the contamination of the water in a water tank in a filter apparatus for filtering the water of the water tank to circulate filtered water to use the same, especially, a filter apparatus for metal processing and treating water. SOLUTION: Used industrial water, especially, metal processing and treating water is allowed to flow in the filter 2 packed with a nonwover fabric provided in front of a water tank 3 and the industrial water filtered by the filter 2 is stored in the water tank 3 and subsequently filtered by a filter 7. The industrial water filtered by the filter 7 is treated with an ion exchanger 8 and again circulated to be used. By once filtering industrial water before the water tank 3 as mentioned above, the contamination of the water tank 3 is reduced and the life o the filter 7 can be extended and the filter 7 can be used for a long period of time as compared with a conventional one. As the filter material of the filter 2, fibers and/or activated carbon and a magnet can be used other than the nonwoven fabric.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtration device for industrial water having a water storage tank, and more particularly to a filtration device for treated metal working water.

[0002]

2. Description of the Related Art Conventionally, industrial water used for processing and the like, particularly treated metal processing water, is used after once storing used water in a water storage tank and then filtering the stored water by a filtration device. doing. However, if the water in the water tank is filtered as it is, the filtration device quickly loses the filtering ability, and the filter needs to be replaced frequently, and there is a problem of the cost of the filter accompanying the replacement. Disposal was difficult. In the metal processing water in particular, metals and the like generated by the metal processing, especially iron, etc. are affected by other impurities in the water storage tank,
It has been discovered that more material to be removed is generated, which makes filtering difficult and requires more filter replacement.

[0003]

[Problems to be solved by the invention]
As a result of various studies to solve these problems of the filtration device, the inventors succeeded in solving these problems by providing a filter in front of the water tank of the filtration device.

[0004]

Means for Solving the Problems The present invention relates to a filtration apparatus for filtering and circulating water in a water storage tank, particularly a metal processing water filtration apparatus having a filter in front of the water storage tank. Related to the device.

[0005]

DETAILED DESCRIPTION OF THE INVENTION It is particularly preferred that the filter after the water tank of the present invention has better performance than the filter before the water tank. Further, a filter for removing metal is also preferable.

It is preferable that the filter has a simple structure, and it is particularly preferable that the filter introduces fluid from above and flows out below. Moreover, it is good also as integral with a water tank.

[0007] The filter in front of the reservoir can be any filter that can achieve the above-mentioned purpose.
It is preferable that the filter is placed in a filter container from the viewpoint of handling the filter.

As the filter, a commonly used filter is used, but it is particularly preferable to use fiber and / or activated carbon. As the fibers, organic or inorganic fibers or the like are used, and short fibers or long fibers may be aggregated as they are, but cloth, paper, and especially nonwoven fabric are preferable in terms of handling.

[0009] The filter may be laminated with a magnet having a large number of holes so as to transmit water. When the magnets are laminated, it is preferable to arrange the magnets next to the filter, for example, fibers and / or activated carbon so that the magnets come into contact with the treated water. As the magnet, it is particularly preferable that the magnet is integrated with a mixture of plastic or rubber, and a magnet in which the periphery of a metal plate or a metal film is covered with plastic can also be used. Further, as the magnet, an electromagnet that becomes or becomes a magnet when current flows or does not flow can be used.

The filter is made of metal, plastic or the like, and as the plastic, acrylic resin is preferable, and stainless steel is particularly preferable in terms of durability.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a filtration device according to the present invention; FIG. 1 is a perspective view of a filtration device, FIG. 2 is a sectional view of a filter, FIG. 3 is a sectional view of another filter, and FIG. 4 is a sectional view of another filter. Example 1 As shown in FIG. 1, used industrial water flows into a filter 2 (shown in FIG. 2) filled with a nonwoven fabric 4 in front of a water storage tank 3. The industrial water filtered by the filter 2 is stored in the water storage tank 3 and then filtered by the filter 7. The industrial water filtered by the filter 7 is further processed by the ion exchanger 8, and is recycled again. As described above, since the water is once filtered in front of the water storage tank 3, the water storage layer 3 is less contaminated, the life of the filter of the original filter 7 disposed after the water storage tank 3 is extended, and compared with the conventional one. It can be used for a long time.

Example 2 As shown in FIG. 1, used industrial water flows into a filter 2 (shown in FIG. 3) filled with activated carbon 5 in front of a water storage tank 3. The industrial water filtered by the filter 2 is stored in the water storage tank 3 and then filtered by the filter 7. The industrial water filtered by the filter 7 is further processed by the ion exchanger 8, and is recycled again. As described above, since the water is once filtered in front of the water storage tank, the original filter 7 is used.
The service life of the filter is extended, and it can be used for a longer time than the conventional one.

EXAMPLE 3 As shown in FIG. 1, the industrial water used was provided with a non-woven filter 4 in front of a water storage tank 3 and a perforated plastic-coated hole containing a perforated iron powder magnet. Magnet 6
Into the filter 2 (shown in FIG. 4) filled with. The industrial water filtered by the filter 2 is stored in the water storage tank 3 and then filtered by the filter 7. The industrial water filtered by the filter 7 is further processed by the ion exchanger 8, and is recycled again. As described above, since the filter is once filtered in front of the water storage tank, the life of the filter of the original filter 7 is extended, and the filter can be used for a longer time than the conventional filter.

[0014]

EFFECTS OF THE INVENTION Since the filtration device of the present invention has a filter in front of the water storage tank, the filtration performance of the filter introduced from the conventional water storage tank is maintained for a long time, and the contamination of the water in the water storage tank is reduced. Can be prevented. Therefore, since the number of filter replacements can be reduced, there is an excellent effect that it is possible to contribute to cost and resource saving by reducing the transportation and disposal of the filter. In addition, cleaning of the water storage tank and the like can be reduced, and accordingly, stoppage of the machine can be prevented. If a magnet is used, metals, especially iron, can be more reliably removed before entering the reservoir.

[Brief description of the drawings]

FIG. 1 is a perspective view of a filtration device.

FIG. 2 is a sectional view of a filter.

FIG. 3 is a sectional view of another filter.

FIG. 4 is a cross-sectional view of another filter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filtration apparatus 2 Filter in front of a water tank 3 Water tank 4 Nonwoven fabric 5 Activated carbon 6 Magnet 7 Filter 8 Ion exchanger 9 Outlet 10 Magnet hole

Claims (7)

[Claims] 1. A water filtration device for circulating water by filtering water in a water storage tank, wherein a filtration device is provided before the water storage tank. 2. The filtering device according to claim 1, wherein the filtering performance of the filter after the water storage tank is superior to the filtering performance of the filter before the water storage tank. 3. The filter according to claim 1, wherein the filter introduces fluid from above and flows out below.
3. The filtration device according to item 1. 4. The filtering device according to claim 1, wherein the filter in front of the water reservoir has a filter mounted on a container. 5. The filter according to claim 1, wherein the filter is a fiber and / or activated carbon. 6. The filtering device according to claim 1, wherein the filter is a fiber and / or activated carbon and a magnet. 7. The filtration device according to claim 1, wherein the filtration device is used for treating metalworking water.