JP2000140685A - Filter media for electromagnetic filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify work required for cleaning a wire net group used as filter media by housing the filter media in a filter vessel of an electromagnetic filter and allowing the filter media to be unified so that a lot of piled-up wire nets are held with supporting members from above and below thereof. SOLUTION: A filter vessel 12 having an inlet 11 for fluid is covered with a lid 14 having an outlet 13 for fluid in the upper part thereof so that it can be opened and closed. In the filter vessel 12, filter media 31 provided with pole pieces 21 and 22 above and below then are housed. For the filter media 31, frame materials 71 and 72 having paraller crrosses are arranged above and below a lot of piled-up wire nets, and through through-holes common to the frame materials 71 and 72, stud bolts 81 and 82 are passed, and onto the stud bolts 81 and 82 nuts 91 and 92 are screwed to unify a lot of the wire nets 51 into one body. In this way, work required for cleaning a wire net 51 group used as the filter media 31 can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a filter medium for an electromagnetic filter. An electromagnetic filter is used to magnetically separate magnetic substances in a fluid. This electromagnetic filter
A magnetic field is applied to the filter medium accommodated in the filter vessel from around the filter medium, and a magnetic substance in a fluid passing through the filter medium is captured by magnetic force. The present invention relates to improvements in such filter media.

[0002]

2. Description of the Related Art Conventionally, a wire mesh is generally used as a filter medium for an electromagnetic filter as described above. A stack of a large number of wire meshes and pole pieces arranged above and below the wire meshes is accommodated in a filter vessel (Japanese Patent Laid-Open No.
0-125217, JP-A-62-204819 and JP-A-10-192618). In this state, a magnetic field is applied to the stacked wire mesh group from around the wire mesh, and a magnetic substance in the fluid passing through the wire mesh group is captured by magnetic force. Thus, when the magnetic substance in the fluid is subjected to the magnetic separation treatment, miscellaneous impurities in the fluid adhere to the wire mesh group in addition to the captured magnetic substance. These are usually removed by backwashing to regenerate the wire mesh, but during the repetition of the magnetic separation process and the regeneration by backwashing, the wire mesh has an oily material that cannot be removed by backwashing alone. Impurities gradually adhere and accumulate. In this case, it is necessary to take out the wire mesh group from the filter vessel and clean it so that the electromagnetic filter functions as expected. Take out the wire mesh group with the upper and lower pole pieces from the filter vessel, remove the stacked wire meshes one by one, and clean them. It is housed in the filter vessel together with the pole piece. Needless to say, the work required for cleaning the wire mesh group is very troublesome, and since the wire mesh is thin, the wire mesh is deformed when removing or attaching them one by one, and the periphery of the wire mesh is deformed. Is loosened, and the thin wire of the unraveled wire mesh sticks into the operator's hand.

[0003]

The problem to be solved by the present invention is that the conventional filter media for an electromagnetic filter has a large number of wire meshes, each of which is independent and separate from each other. The work involved is indeed cumbersome, and the wire mesh is damaged during the work.

[0004]

SUMMARY OF THE INVENTION The present invention, which solves the above-mentioned problems, is directed to a filter medium accommodated in a filter vessel of an electromagnetic filter. And a filter medium for an electromagnetic filter.

[0005] A filter medium for an electromagnetic filter according to the present invention is also a stack of a large number of wire meshes. The filter medium for an electromagnetic filter according to the present invention is obtained by integrating a large number of wire nets stacked as described above from above and below with a support member. The specific means of integration is not particularly limited, but a support member, for example, a girder-like frame material is arranged above and below a number of stacked wire meshes, and a common through hole is provided in these, and stud bolts are provided in the through holes. It is preferable to tighten the stud bolts with nuts to integrate the multiple wire meshes.

In the filter medium for an electromagnetic filter according to the present invention, since a large number of wire meshes are integrated, at the time of cleaning, the integrated wire mesh group together with the upper and lower pole pieces is taken out of the filter vessel and removed at once. On the other hand, the same integrated wire mesh group prepared separately may be attached at a time, and housed in the filter vessel together with the upper and lower pole pieces. It is not necessary to remove a large number of wire meshes one by one and attach them one by one when cleaning the wire mesh group as in the related art. Therefore, according to the present invention, the work required for cleaning the wire mesh group is simplified, and the wire mesh is not damaged during the work.

[0007]

FIG. 1 is a longitudinal sectional view schematically showing an electromagnetic filter accommodating a filter medium according to the present invention.
3 is an enlarged plan view showing the filter medium of FIG. 1, and FIG. 3 is an enlarged side view showing the filter medium of FIG. A lid 14 having a fluid outlet 13 at an upper portion is openably and closably attached to a filter vessel 12 having a fluid inlet 11 at a lower portion. In the filter vessel 12, a filter medium 31 having pole pieces 21 and 22 disposed above and below is accommodated. The coil 4 is provided in the outer peripheral area of the
The coil 41 is surrounded by a yoke 42. When the coil 41 is energized and the generated magnetic field acts on the filter medium 31, when the fluid passes from the inlet 11 to the outlet 13, the magnetic substance in the fluid is captured by the magnetic force of the filter medium 31. I have.

[0008] The filter media 31 is composed of a large number of wire nets 51 stacked on top of each other, cross-shaped frame members 71 and 72 arranged above and below them, and stud bolts 81 to 84 passed through through holes common to them. And stud bolts 81-8
4 and nuts 91 to 94 (however, nuts 93,
94 is not shown, the same applies hereinafter). The filter media 31 has frame members 71 and 72 arranged above and below a large number of stacked wire nets 51, and stud bolts 81 to 84 are passed through common through holes to stud bolts 81 to 84.
4 is tightened by nuts 91 to 94 to form a large number of wire nets 51 integrated.

The filter media 31 includes a large number of wire nets 51.
Are removed from the filter vessel 12 together with the upper and lower pole pieces 21 and 22 at the time of cleaning, and are removed and cleaned at a time. Of the filter vessel 12 together with the pole pieces 21 and 22 of FIG.

[0010]

As is clear from the above, the present invention described above has an effect that the work required for cleaning the wire mesh group used as the filter media can be simplified and the wire mesh can be prevented from being damaged during the work. is there.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view schematically showing an electromagnetic filter accommodating a filter medium according to the present invention.

FIG. 2 is an enlarged plan view showing the filter medium of FIG. 1;

FIG. 3 is an enlarged side view showing the filter medium of FIG. 1;

[Explanation of symbols]

12. filter vessel, 14 lid, 31 filter media, 41 coil, 42 yoke, 51
..Wire mesh, 71,72..Frame material, 81-84..Stud bolt, 91,92..Nut

Claims (2)

[Claims] 1. A filter medium to be housed in a filter vessel of an electromagnetic filter, wherein a plurality of stacked wire nets are sandwiched from above and below by a support member and integrated. 2. A support member is arranged above and below a large number of stacked wire meshes, these are provided with common through holes, stud bolts are passed through the through holes, and the stud bolts are tightened with nuts. The filter medium for an electromagnetic filter according to claim 1, wherein the wire mesh is integrated.