JPS6058216A - Magnetic filter apparatus - Google Patents

Abstract

PURPOSE:To enhance separation efficiency by simultaneously performing separation and washing, by rotating a rotor having a filter and three or more of chambers, and enabling the change-over of the relation of each chamber and both fixed casings of a fluid to be treated and treated fluid. CONSTITUTION:A fluid to be treated is flowed into one chamber of a rotor 11, which has a magnetic filter element and is provided with three or more of mutually paritioned chambers, from an inflow pipe 5. In this case, a zigzag stream is repeated through a connection flowline S and supplied to the other chamber to which a magnetic field is applied by a magnetic field applying apparatus 1 while magnetic particles in the fluid to be treated are separated and the treated fluid is discharged from a fluid outflow pipe 6. On the other hand, a washing fluid is supplied to the chamber, into which the fluid to be treated is supplied, from an inflow pipe 7 through a washing fluid jet orifine 15 and magnetic particles are washed off from the filter element to be discharged from an outflow pipe 8. Subsequently, the rotor 1 is rotated and the aforementioned cycle is repeated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a magnetic filter device that uses magnetic force to separate and remove magnetic particles mixed in a fluid to be treated.

[Prior art]

FIG. 1 is a block diagram showing a conventional magnetic filter device.

In the figure, (1) is an annular excitation coil arranged inside a return frame (2), and a filter container (3) is arranged in the center part. Filter container (3)
A filter element (4) made of a thin ferromagnetic wire is mounted inside the filter element. Also, filter container (3)
An inflow pipe (5) and an outflow pipe (6) are connected to the inflow pipe (5) and an outflow pipe (6), and an outflow pipe (8) and an inflow pipe (7) for cleaning fluid are vertically connected to the inflow pipe (5) and outflow pipe (6), respectively. Each pipe (5), (6), (7), (8) has a valve V6,
V6, V7, and V8 are installed.

Next, the if1 work will be explained. In Fig. 1, when the excitation coil (1) is energized, lines of magnetic force are generated parallel to the flow direction of the fluid in the filter container (3), and the ferromagnetic fine wires forming the filter element (4) are magnetized. ,
A strong magnetic field gradient is formed around it, forming a so-called high gradient magnetic filter. In this state, the fluid to be treated is introduced into the inflow pipe (5
), the magnetic particles mixed in the fluid to be treated while passing through the magnetic filter section will be captured by the ferromagnetic wires, and the fluid to be treated from which the magnetic particles have been separated and removed will flow through the outflow tube (6 ). At this time, only valves v5 and v6 are open, and valves V7 and v8 are closed.

Since the captured magnetic particles are deposited on the filter element (4), the separation performance gradually deteriorates. Therefore, it is necessary to clean the filter element (4) at regular time intervals. That is, the excitation coil (1,) is de-energized to eliminate the magnetic field, valves V6 and (6) are closed, valve (7) and Vs are opened, and the cleaning fluid is introduced through the cleaning fluid inflow pipe (7). It is supplied to the filter container (3), the magnetic particles deposited on the filter element (4) are removed and the filter is regenerated, and then it is discharged from the outflow pipe (8), and then the valve #3, v6 is discharged again.
is opened, and valves 7, v, and l are closed to supply the fluid to be treated.

The above cycle is repeated to separate the magnetic particles in the fluid to be treated. - Since the conventional magnetic filter device is configured as described above, the filter element (4) is made of densely packed ferromagnetic thin wires in order to increase the separation efficiency of magnetic particles in the fluid to be treated. The fluid resistance in the filter element (4) is large, and when removing the magnetic particles deposited on the filter element (4), the current of the excitation coil (1) is cut off to weaken the magnetic attraction force, and then the cleaning fluid is removed. This has disadvantages such as the inability to carry out continuous separation treatment.

[Summary of the invention]

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and is a rotating body having a filter element formed of a magnetic material through which fluid passes, and having eight or more chambers partitioned from each other. , a magnetic field application device that applies a magnetic field to two or more of the chambers, which is connected and sealed to the two or more chambers to which the magnetic field is applied, and supplies the fluid to be treated from an inlet pipe to one of the chambers to which the magnetic field is applied; A fixed fluid casing to be treated is supplied to the other chambers to which a magnetic field is sequentially applied via a connecting channel and discharged from an outflow pipe, and a fixed fluid casing is connected to a room to which the fluid to be treated is not supplied and is sealed to supply the cleaning fluid. The cleaning fluid casing is provided with a fixed cleaning fluid that is supplied to the chamber through an inflow pipe and discharged through an outflow pipe, and the relationship between each of the chambers and each of the casings is switched by rotating the rotating body. It is an object of the present invention to provide a magnetic filter device that increases the separation efficiency by increasing the length of the fluid flow path, and that can perform separation processing on the one hand and cleaning processing on the other hand.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Second
The figure is a configuration diagram showing a magnetic filter device according to an embodiment of the present invention. In the figure, (1) is an annular excitation coil, that is, a magnetic field application device, placed inside the return frame (2), and in the center there are 7 no.
has a jump, and z-oct is a rotating body (
This is a drive device for rotating lv. Figure 8 is the second
It is a sectional view taken along the line ■-■ of the filter main body (9) shown in the figure.

In the figure, 0υ is a rotating body that has eight or more rooms partitioned from each other, and in this example, a magnetic field is applied to all the rooms of the rotating body θυ. 0 years old, G'3 is a rotating body 0
]) Seal members 1. an inner casing and an outer casing, respectively, which are connected and sealed by la, and both supply the to-be-treated fluid to one of the chambers from the inflow pipe (5), and sequentially to the other chambers via the connecting flow path S; A fixed fluid casing to be treated is discharged from an outflow pipe (6), and a fixed cleaning fluid casing is configured to supply cleaning fluid from an inflow pipe (7) to a room to which no fluid to be treated is supplied and to discharge it from an outflow pipe (8). There is. αG is a cleaning fluid injection hole. Further, arrows indicate the flow directions of the treated fluid and the cleaning fluid. In this example, the rotating body qυ has eight chambers, seven of which are supplied with the fluid to be treated for separation processing, and the remaining one chamber is supplied with cleaning fluid for cleaning processing. I am doing it.

FIG. 4 is a longitudinal cross-sectional view of the filter main body (9) shown in FIG. 8, and the filter element (4) is a plurality of plates u1 having magnetic protrusions arranged in parallel at intervals, Fluid flows in the radial direction. For simplicity, the seal member 0 → which connects and seals the inner casing @ and outer casing a and each chamber of the rotating body 0υ
is omitted in this figure.

FIG. 5 shows an example of the plate shown in FIG. 4 having protrusions made of a magnetic material, in which the protrusions are provided by cutting a ferromagnetic material into grooves parallel to the flow direction of the fluid. Ho is the direction of magnetic field lines, and vo is the direction of fluid flow. In reality, the protrusion has a pattern T as shown for one room in Figure 8.
It is preferable that the fluid flows evenly to every corner of the room in the radial direction.

Next, the operation will be explained. In Fig. 2, when the excitation coil (1) is energized, a magnetic field acts on the filter element (4), and a strong magnetic field gradient is formed around the protrusion of the plate 0Q, which has a magnetic protrusion, resulting in so-called high-gradient magnetic field. A filter is formed. When the fluid to be treated passes through the filter element (4) made up of the plate 0Q having the protrusions of the magnetic material, the mixed magnetic particles are captured by the protrusions of the plate θQ.

In the A-0 line cross section of the filter body shown in Fig. 8,
As shown in FIG. 6, the fluid to be treated is in the outer casing αe.
It flows into one chamber of the rotating body αυ from an inflow pipe (5) provided in the filter element (4), and flows toward the center of the filter element (4). Furthermore, it reaches the cross section taken along the line B-0 in FIG. 8 via the connecting flow path S of the inner casing @. In the B-0 line cross section, the 7th
As shown in the figure, the fluid to be treated is filter element (4
) flows radially outwards to a connecting channel S in the outer casing a.

In this way, the fluid to be treated repeats a zigzag flow until it reaches the C-0 line cross section, flows toward the center of the filter element (4) as shown in Fig. 8, and flows from the fluid to be treated outflow pipe (6). Discharge. On the other hand, in the cross section taken along line D-0 in Fig. 8, as shown in Fig. 9, cleaning fluid is supplied from the inflow pipe (7), and the pressure of the fluid causes the magnetic material constituting the filter element (4) to The magnetic particles are washed away from the protruding portion of the plate α having protrusions and are discharged from the outflow pipe (8).

For simplicity, in FIGS. 6 to 8, the sealing member 0◆ that connects and seals the inner casing (2) and the outer casing 0 with each chamber of the rotating body Qυ is omitted. When the rotating body α is rotated one-eighth of a rotation at a predetermined time interval, the filter element (4) that was cleaned at the D-0 line cross section in Fig. 8 comes to the A-0 line cross section and is newly cleaned. Capture magnetic particles. Further, the filter element (4) having a cross section taken along the line C-◯ comes to the cross section taken along the line D-0 and is cleaned. By repeating the above cycle, magnetic particles in the fluid to be treated can be continuously separated on one side and simultaneously washed on the other side while the magnetic field remains applied. Furthermore, since the fluid to be treated is supplied to a plurality of chambers in a zigzag pattern, the length of the flow path is increased, and separation efficiency is increased.

In the above embodiment, the fixed fluid casing and the fixed cleaning fluid casing are provided on the inside (c) and outside a3 of the donut-shaped rotating body QE. The casing and the fixed cleaning fluid casing may be provided only on the outside (or inside) with the inside (or outside) of the rotating body 0 as a closed flow path; It may be arranged at least one above or below the rotating body Ql).

Additionally, in this regard, the fluid to be treated and the cleaning fluid in each chamber may all be configured to flow radially inward (or outward).

Further, in the above embodiment, a case has been described in which a magnetic field is applied to all the chambers of the rotating body αυ, but it is sufficient that the magnetic field is applied at least to the chamber to which the fluid to be treated is supplied.

Furthermore, in the above embodiment, a case was explained in which the rotating body α◇ was divided into eight chambers, seven of which carried out the separation process, and the remaining one chamber carried out the cleaning process. The rotating bodies Qυ may be divided into any number of chambers as long as they are 8 or more, and the 9 bodies to be treated may be supplied to any number of chambers as long as they are 2 or more.

In that case, the remaining rooms will be supplied with cleaning fluid and one or more rooms will be cleaned. In addition, as the filter element (4), in addition to the plate having magnetic protrusions shown in Fig. 5 (a plurality of plates arranged in parallel at intervals of 1), the filter element (4) shown in Figs. 10 and 11 may be used. It may be one in which plates (one or more) having protrusions of magnetic material are arranged in the same way, and furthermore, it may be made of thin ferromagnetic wires as shown in Fig. 1 as in the past. However, in the case shown in Fig. 10, both the protrusion and the flat plate part are made of magnetic material, but in the case shown in Fig. 11 (up to)
In this case, only the protrusions are made of a magnetic material, and the flat plate part is made of a non-magnetic material.

In addition, in the case shown in FIG. 11 (in 110, when magnetic protrusions are provided on both the front and back sides of the flat plate portion of the non-magnetic material, this plate (G) is placed parallel to the axis of the rotating body θυ at intervals Even if a plurality of sheets are arranged in the radial direction with a distance between them, the same effect as in the above embodiment can be obtained.

According to the present invention, by supplying the fluid to be treated to two or more chambers via a connecting flow path, the length of the flow path of the fluid to be treated is increased and the separation efficiency is increased. Even when filter elements (4) are used, these (4) do not need to be constructed as densely as in the past, and the fluid resistance in the filter elements (4) can be reduced.

〔Effect of the invention〕

As described above, according to the present invention, there is provided a rotating body having a filter element formed of a magnetic material through which a fluid passes, and having eight or more chambers partitioned from each other, and a rotating body having a magnetic field applied to two or more of the chambers. A magnetic field applying device is connected and sealed to two or more of the above-mentioned chambers to which a magnetic field is applied, and the fluid to be treated is supplied from an inflow pipe to one of the above-mentioned chambers to which a magnetic field is applied, and the magnetic field is sequentially applied through a connecting flow path. a fixed treated fluid casing that supplies the fluid to the other chamber to which the fluid is applied and discharges it from the outflow pipe, and a fixed fluid casing that is connected and sealed to a chamber to which the fluid to be treated is not supplied;
A fixed cleaning fluid casing is provided for supplying cleaning fluid to the chambers through an inflow pipe and discharging the cleaning fluid through an outflow pipe, and by rotating the rotating body, the relationship between each of the chambers and each of the casings is switched. This has the effect of increasing the separation efficiency by increasing the flow path length of the fluid to be treated, and also provides a magnetic filter device that can perform separation processing on the one hand and cleaning processing on the other hand.

[Brief explanation of the drawing]

FIG. 1 is a sectional configuration diagram showing a conventional magnetic filter device, FIG. 2 is a sectional configuration diagram showing a magnetic filter device according to an embodiment of the present invention, and FIG. 8 is a sectional configuration diagram showing a magnetic filter device according to an embodiment of the present invention.
4 is a vertical sectional view of the filter main body shown in FIG. 8, FIG. 5 is a perspective view showing a plate having magnetic protrusions according to an embodiment of the present invention, and FIGS. Figure 9 shows the A-0 line, B-0 line, and C line of the filter body shown in Figure 8, respectively.
10 and 11 are perspective views respectively showing plates having magnetic protrusions according to other embodiments of the present invention. In the figure, (1) is a magnetic field application device, (4) is a filter element, (5) is an inflow pipe for the fluid to be treated, (6) is an outflow pipe for the fluid to be treated, (7) is an inflow pipe for the cleaning fluid, (8)
is the cleaning fluid outflow pipe, αV is the rotating body, @ is the inner casing, a9 is the outer casing - IMI kick ring - White is the cleaning fluid injection hole, 0Q- (to) each has a magnetic protrusion It is a board. Further, the inner casing θ and the outer casing 03 together constitute a fixed treated fluid casing and a fixed cleaning fluid casing. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Masuo Oiwa Figure 1 ↓ Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 I Figure 7 Figure 9

Claims (2)

[Claims] (1) A rotating body that has a filter element formed of a magnetic material and through which fluid passes, and has eight or more chambers separated from each other, a magnetic field application device that applies a magnetic field to two or more of the chambers, and a magnetic field applied The fluid to be treated is supplied from an inflow pipe to one of the chambers to which a magnetic field is applied, and the other chambers to which a magnetic field is sequentially applied via a connecting flow path. A fixed fluid casing to be treated is supplied to the chamber and discharged from the outflow pipe, and a fixed cleaning fluid casing is connected and sealed to a room to which the fluid to be treated is not supplied, and supplies cleaning fluid to the room through the inflow pipe and discharged from the outflow pipe. A magnetic filter device, wherein the relationship between each of the chambers and each of the casings is switched by rotating the rotating body. (2) The magnetic filter device according to claim 1, wherein the filter element is a plurality of plates having magnetic protrusions arranged in parallel at intervals.