JPS6214914A - Method and apparatus for filtering fluid - Google Patents

Abstract

PURPOSE:To contrive to enhance filtering efficiency, by collecting and filtering magnetic impurities present in a raw solution in a mixed state by magnetism and subsequently adsorbing and filtering fine magnetic impurities contained in the filtrate by packing material. CONSTITUTION:A first means A is provided to a raw solution line a1 to perform a first process for collecting and filtering magnetic impurities present in a raw solution in a mixed state. The first means A is constituted of the magnetizing apparatus a2 provided to the raw solution line a1 and the filter apparatus a3 provided to the downstream side thereof or constituted only of the filter apparatus a3. A second process for adsorbing and filtering fine magnetic impurities contained in the filtrate by a packing material is performed by the action of an auxiliary filter apparatus B constituted by packing the packing case b2 mounted so as to be communicated with the discharge port 2 of the upper chamber a3-7 in the aforementioned first means A with a packing material b1 such as activated carbon. The fine magnetic impurities are adsorbed by the above-mentioned packing material b1 to discharge the filtrate from the discharge port 26 of a packing case b1.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a fluid filtration method in which magnetic fine particle impurities such as iron contained in an undiluted solution such as waste liquid are separated and removed from the fluid by magnetic force to purify the undiluted solution. and its apparatus.

[Prior art and its problems]

Conventionally, in order to filter an undiluted solution containing magnetic impurities such as iron, a permanent magnet was installed inside the tank, the undiluted solution was allowed to flow down into the tank, and the magnetic particles such as iron were directly adsorbed to the surface of the permanent magnet and separated. It is common to do so.

However, with this method of installing a permanent magnet in a tank and attaching magnetic impurities such as iron to the surface of the permanent magnet, the magnetic impurities are uniformly adsorbed, resulting in a decrease in adsorption capacity. There is a risk that magnetic impurities will be quickly discharged without being filtered, resulting in extremely poor filtration efficiency.

[Problem that the invention seeks to solve]

The problem to be solved by the present invention is to provide a method and an apparatus for improving filtration efficiency.

[Means for solving problems]

The technical measures taken to solve the above problems are as follows: In the first invention, the first step is to collect and filter the magnetic impurities mixed in the stock solution using magnetism, and the first step is to collect and filter the magnetic impurities mixed in the filtrate using magnetism. In the second invention, a first means for collecting and filtering magnetic impurities by magnetism is provided in the stock solution line, and downstream of the means, fine particles containing the filler are provided. An auxiliary filtration device for magnetic impurities was provided.

(effect) The effects of the technical means of the present invention are as follows.

In the first invention, after the magnetic impurities mixed in the stock solution are collected and filtered in the first step, the fine magnetic impurities contained in the filtrate are adsorbed and filtered in the second step containing the 11t material.

In the second invention, magnetized magnetic impurities are adsorbed and collected by the first means, and fine magnetic impurities in the filtrate are filtered by an auxiliary filtration device.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

The fluid filtration method of the present invention consists of a first step in which magnetic impurities mixed in the stock solution are collected and filtered using magnetism, and a second step in which fine magnetic impurities contained in the filtrate are adsorbed and filtered using a filler.

(1) First step In this first step, a first means (A) for collecting and filtering magnetic impurities by magnetism is installed in the stock solution line (al), and
It is accomplished by the action of means (A).

The first means (A>) is composed of a magnetization device (a2) installed in the middle of the stock solution line (al) and a filtration device (a3) installed downstream of the magnetization device (a2), or only the filtration device (a3) It consists of:

The stock solution line (al) is made of a non-magnetic material, and has a horizontal introduction pipe (al-1) and a horizontal introduction pipe (al-1) that protrudes horizontally from the upper end and is further bent downward to form a line that is at the same level as or higher than the introduction pipe (al-1). It consists of a drainage pipe (al-2) lowered to a low level, and a base (
1) A magnetizing device (a) is supported in an upright manner on a support frame (2) and is placed and fixed on the support frame (2).
2) Insert the inside.

The magnetization device (a2) is an electromagnet, and when it is energized, it creates a magnetic flux in the stock solution line (al), thereby magnetizing and adsorbing the magnetic fine particles in the stock solution and making them coarse particles at will. , this magnetization device (a2
The raw solution mixed with magnetic impurities that has been made into coarse particles by > is sent to the filtration device (a3) via the drain pipe (al-2).

The filtration device (a3) includes a filtration device (a3-1) connected to the raw solution line (al) on the downstream side of the magnetization device (a2), and a magnetization element that generates magnetic flux in the filtration device (a3-1). (a3-2).

The filter (a3-1) is connected to a lower chamber (a3-6) in communication with the lower chamber (a3-6), and has an adsorption rod-shaped body (a3-4) and a filter cylinder (a3-5) inside. It consists of a filtration main body (a3-3) with a filter inside, and an upper chamber (a3-7) connected in communication with the filtration main body (a3-3>).

The lower chamber (a3-6) has an oblong rectangular cylindrical shape, and has a communication port (3) with the stock solution line (al) at the middle upper part of the back wall, and two drain outlets (4) (5) at the lower part of the side wall. ) at arbitrary intervals, and the bottom wall has suction rod-like bodies (a), which will be described later.
3-4) It has support pillars (6) for support in an upright manner.

In addition, this lower chamber (a3-6) is equipped with an inclined plate (7) on the bottom wall extending from one side wall to the other side wall, which is slightly downwardly directed toward the drain outlet (4) and (5). At the same time, consideration is given so that the magnetic impurities washed away through the inclined plate (7) can be discharged to one drain outlet (4).
In this embodiment, a partition plate (8) is installed horizontally between the earthen wall and the inclined plate (7), and stands between the drain outlets (4) and (5).

The partition plate (8) has a filter-like function to roughly remove magnetic impurities from the raw solution containing coarse-grained magnetic impurities, and the entire area is made into a perforated plate part (9゛) having a filter function. Of this perforated plate part (9'), the hole (1
0), holes (
The diameter is set to be slightly smaller than that of drain outlet (11), so that rough magnetic impurities can be freely removed from the other drain outlet (5).

The filtering means (a3-3) has a rectangular shape made of non-magnetic material.

A vertically elongated filtration cylinder (inside 12), such as a circular or oval shape,
A large number of suction rods (a3-4) and their rods (a3
The filtration cylinder (12) is made up of a filter cylinder (a3-5) that surrounds the adsorption rod-shaped body (a3-4) and the filter cylinder (a3-4). a3-5)・
The lower chamber (a
3-6), and an upper chamber (a3-7) is provided at the upper end of this cylindrical body (12), and a magnetizing element (a3-2) is provided at the outer side.

The magnetizing element (a3-2) is for intermittently magnetizing the adsorption rod-shaped body (a3-4) and the filter cylinder (a3-5), and is compatible with the back wall of the filter cylinder (12), for example. A plate-shaped permanent magnet (a4) is disposed so as to be able to come into contact with and be detached from the rear wall of the filtering cylinder (12).

This magnetization element (a3-2) is connected to the filtering cylinder (12).
) Support frame (13) provided around the area excluding the facing part
, a pair of rails (15) provided on both left and right ends of the bottom plate (14) on the lower chamber (a3-6), and a support frame (13) supported in the middle and high part via bearings (16) so that it can move forward and backward, and one end between the screw (18) and the permanent magnet (a4), which is equipped with an operating handle (17) and whose other free end is fixed to the permanent magnet (a4).
The rail (15) is configured with a wheel (19) provided at the lower end, and the rail (15) is rotated forward and backward by rotating the operating handle (17).
The permanent magnet (a4) is reciprocated along the filtration cylinder (
12) Bring the rod-shaped body (a) into contact with the back wall and use its magnetic flux to attract it.
3-4) and the filter cylinder (a3-5), and remove the filter cylinder (12) from the filter cylinder (12) to form an adsorption rod (a3-5).
-4) and the filter cylinder (a3-5) are demagnetized.

Note that this magnetizing element (a3-2) does not use a permanent magnet (a4), but uses an electromagnet to attract the adsorbing rod-shaped body (
A3-4) and the filter cylinder (a3-5>) may be intermittently magnetized.

The suction rod-like body (a3-4) has a bolt hole (20) for extraction at the upper end and a protrusion (21) for fitting into the support column (6) of the lower chamber (a3-6) at the lower end. In addition, a magnet is provided with a large number of trapezoidal suction parts (23) having a V-shaped cross section regularly arranged integrally in the vertical direction extending from a slightly lower part of the head (22) having a bolt hole (20) to the lower end thereof. They are rod-shaped bodies made of wood, and are set upright at equal intervals within the same number of filtration cylinders (12) as the support columns (6) of the lower chamber (a3-6).

The reason why the adsorption part (23) is trapezoidal in cross section is that the coarse magnetic impurities in the stock solution rising inside the filtration cylinder (12) have a higher fluid resistance than the flat lower surface part. This is because it is mainly adsorbed on inclined surfaces where there is little.

The filter cylinder (a3-5) is connected to the adsorption rod-shaped body (a3-4).
) is made of a magnetic material in order to adsorb coarse-grained magnetic impurities.

Moreover, this filter cylinder (a3-5) is connected to the partition plate (8).
The adsorption rod-like body (a3-4) is formed by winding one to several layers of the net so as to form a net-like microscopic hole (1G) slightly smaller than (11). The suction rod-shaped body (a3-4
), and the magnetic impurities are adsorbed and collected by the cross section that forms a network of fine pores.

The upper chamber (a3-7) has an oblong rectangular shape, is provided in communication with the filtration cylinder (12), and has an adsorption rod-shaped body (a
3-4) is provided with a protruding fitting tube (24) into which the head (22) is inserted, and this insertion tube (24) is inserted into the removable lid body (
25), and after removing the lid (25), insert the jig into the bolt hole (20) and freely remove the suction rod (a3-4) and filter cylinder (a3-5). enable.

In addition, the upper chamber (a3-7) has a filtrate outlet (26) for discharging the filtered fluid to the outside, an adsorption rod-shaped body (a3-4), and a filter cylinder (a3-5) on the side. A washing water inlet (27) is provided for washing off the adsorbed magnetic impurities.

In addition, when the first means (A) for carrying out this first step is composed of only the filtration device (a3), the stock solution line (
The magnetic impurities mixed in al) reach the filter (a3-1) without being made into coarse particles, but the magnetic impurities mixed in the adsorption rod (a3-4),
The magnetic impurities are filtered out by the collection and adsorption action of the filter cylinder (a3-5).

(2) Second step This second step is carried out by the action of an auxiliary filtration device (B) that adsorbs and filters fine magnetic impurities that were not filtered in the first step using a filler (BL) filled inside. Ru.

As shown in FIG. 1, the auxiliary filtration device (B) includes a filling case (b2) installed in communication with the discharge port (26) of the upper chamber (a3-7) in the first means (A>); The filling case (b2) is composed of activated carbon filled in the filling case (b2), a porous material having extremely fine pores, and a filler (bl) such as sand. It is adsorbed and discharged from the discharge port (26) of the filling case (bl).

Also, this auxiliary filtration device U (B) is naturally connected to the upper chamber (a3-7
), and the fine magnetic impurities that have been adsorbed are washed away by backflowing the washing water.

In addition, in the first means (A), the suction rod-shaped body (a3-4)
When the adsorption function of the magnetization element (a3-2
) is demagnetized and allowed to flow down from its inlet (27) to cause the magnetic impurities mainly adsorbed on the inclined surface of the adsorption section (23) to fall into the lower chamber (a3-6), and the inclined plate (7) is The drain is discharged through the other drain outlet (4).

Furthermore, a filtrate outlet (26) and a washing water inlet (21) are provided.
) may be used together as shown in the figure or may be formed separately, and the filtrate may also be used as washing water.

Incidentally, in this example, the stock solution is passed from the stock solution line (al) through the lower chamber (a3-6) to the filter (a3-1).
) and discharged through the upper chamber (a3-7) and the auxiliary filtration device @ (B), but conversely, the raw solution line (al) is filtered through the upper chamber (a3-7). The stock solution is allowed to flow down into the container (a3-1) and the lower chamber (a3-
6) may be configured to be discharged from. In that case, the holes (10) (11) of the partition plate (8) should be
3-5) is made smaller than the mesh-like micropores to have a filter function, and the communication port (3) and its communication port (3)
The water is discharged through an auxiliary filtration device (B) provided in communication with the water.

〔Effect of the invention〕

As described above, in the first invention, the magnetic impurities mixed in the stock solution are collected and filtered by magnetism, and then the fine magnetic impurities contained in the filtrate are adsorbed and filtered by the filler, so that relatively Since large magnetic impurities can be efficiently collected and filtered in the first step, and relatively small fine magnetic impurities that are not collected in the first step can be adsorbed and filtered in the second step, filtration efficiency is greatly improved.

In the second invention, an auxiliary filtration device is provided which communicates with the first means for collecting and filtering magnetic impurities by magnetism and adsorbs and filters minute magnetic impurities in the filtrate by the action of a filler filled inside. Therefore, when trying to improve filtration efficiency, the purpose can be easily conceived and achieved.

Therefore, we were able to achieve our intended purpose.

[Brief explanation of drawings]

The drawings show an embodiment of the fluid filtration method and device of the present invention, FIG. 1 is a side view with a portion cut away, and FIG. 2 is a (2)-(2) view.
3 is a perspective view of the suction rod-like body, FIG. 4 is a perspective view of the filter tube, and FIG. 5 is a sectional view taken along line (5)-(5). (al): Stock solution line, (A>: First means, (B
): Auxiliary filtration device, (a2): Magnetization device, (a3-4
): Adsorption rod-shaped body, (a3-5): IIL overcylinder, (a3
) :filtration device, (bl) :filling material, (a3-
1) : Filter, (a3-3) : Filter main body, (
a3-2): Magnetizing element patent applicant: Taiko Kiding Co., Ltd. Figure 3 Figure 5

Claims (4)

[Claims] (1) It is characterized by consisting of a first step in which magnetic impurities mixed in the stock solution are collected and filtered using magnetism, and a second step in which fine magnetic impurities contained in the filtrate are adsorbed and filtered by a filler. Fluid filtration methods. (2) A fluid filtration device in which a first means for collecting and filtering magnetic impurities by magnetism is provided in the stock solution line, and an auxiliary filtration device for fine magnetic impurities containing a filler is provided downstream of the means. (3) the first means is a magnetization device that is provided in the stock solution line and magnetizes and adsorbs magnetic impurities in the stock solution to coarse particles;
A suction rod-like body made of a magnetic material provided on the downstream side of the device, a filter cylinder made of a magnetic material having mesh-like micropores on the entire surface and surrounding the suction rod-like body, and the suction rod-like body; A fluid filtration device according to claim 2, comprising a filtration device that magnetizes a filter cylinder. (4) The first means includes an adsorption rod-like body connected to the stock solution line and made of a magnetic material, and a filter cylinder made of a magnetic material having mesh-like micropores on the entire surface and surrounding the adsorption rod-like body. The fluid filtration device according to claim 2, which is a filtration device comprising a filter, its adsorption rod-like body, and a magnetization element that magnetizes the filter tube.