JPS6336296B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic material recovery device that captures and recovers magnetic materials such as iron powder contained in dust generated in factories and the like.

When dust generated in factories or the like contains a large amount of magnetic materials such as iron powder, if the magnetic materials such as iron powder can be recovered from the dust, it can be effectively reused.

Conventionally, in order to collect magnetic materials such as iron powder contained in an airflow, the airflow must be passed through a dust collection device such as a cyclone, bag filter, or electrostatic precipitator to separate and capture the magnetic powder. However, when captured by the above-mentioned dust collector, magnetic materials and non-magnetic materials are mixed, and after collection, they must be separated into magnetic materials and non-magnetic materials again. There is a problem in that the efficiency of recovering bodies is extremely low.

The present invention provides hollow rods made of a plurality of non-magnetic materials in the flow path of dust-containing gas, and when collecting magnetic powder in the gas, magnetic rods are placed in the hollow rods and magnetized. Magnetic powder in the gas is deposited around the rod, and when the amount of deposition becomes excessive, the gas flow is stopped and the magnetic material rod is taken out from the hollow rod to clean the magnetic powder deposited around the hollow rod. It is characterized in that it is desorbed and recovered by a device.

FIG. 1 shows an embodiment of the present invention. The internal space of the duct through which dust-containing gas flows is divided into a large number of channels 1, and two pairs of plate-shaped permanent magnets 4 are placed around each channel 1.
are opposed to each other and surrounded by a yawter 5, and a substantially uniform magnetic field is generated in the flow path in the direction of the arrow, as shown in FIG. Inside the channel 1, as shown in FIG. 3, a plurality of non-magnetic hollow rods 2 fixed to a non-magnetic plate 6 are arranged, and the magnetic rods 3 fixed to a non-magnetic plate 7 are moved up and down. so that it can be inserted into and taken out from the hollow rod 2.

As shown in FIG. 4, water spray pipes 8 are provided above the honeycomb-shaped channel group shown in FIG. 1, and the magnetic powder deposited in each channel is washed away. The cleaning water containing magnetic powder flows into the storage tank 9 as shown in FIG.
The liquid accumulated in the water tank 9 is discharged to the outside by periodically opening the valve 10.

Next, the operation of the present invention will be explained.

When capturing a magnetic material such as iron powder, as shown in FIG. The body rod 3 is magnetized. In this state, a gas containing a magnetic material such as iron powder is introduced from the inlet 11. The introduced dust-containing gas passes through the flow path 1 and is discharged from the discharge port 12, but the magnetic powder in the dust-containing gas is transferred to the non-magnetic hollow rod 2 by the magnetic force of the magnetized magnetic rod 3. It is attracted to and trapped on surfaces.

After capturing a certain amount of magnetic powder, the supply of dust-containing gas is stopped, and the magnetic bar 3 fixed to the non-magnetic plate 7 is pushed down to reduce the magnetic force acting on the magnetic powder accumulated around the hollow bar. lose. Next, washing water is discharged from the water sprinkler pipe 8 to remove the magnetic powder deposited around the hollow rod. The liquid that has washed away the magnetic powder flows into a storage tank 9, and the liquid accumulated in the tank 9 is periodically flushed with a valve 1.
Open the container, let it out, dehydrate it, and collect the magnetic powder.

In the above embodiments, an example of a cleaning method using a water spray pipe was explained as a cleaning device for magnetic powder, but the present invention is not limited to this, and any device may be used as long as it can remove magnetic powder from the surface of a non-magnetic hollow bar. Since the non-magnetic hollow rod 2 is completely demagnetized by removing the magnetic rod 3, it is extremely easy to clean the magnetic powder deposited on the hollow rod.

As described above, since the present invention attracts and captures only magnetic materials such as iron powder, there is no need for sorting work after collection, and work efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 shows a schematic configuration of an embodiment of the present invention,
A is a plan view, and b is a cross-sectional view. Figure 2 shows details of the flow path 1 in Figure 1, where a is a plan view and b is a -
Cross-sectional view. Figure 3 shows the flow path 1 and non-magnetic rod 2 in Figure 1.
and a magnetic rod 3 are shown separately, where a is a flow path, b is a non-magnetic rod, and c is a perspective view of a magnetic rod. FIG. 4 is a diagram showing the main parts of the cleaning mechanism. FIG. 5 is a diagram showing a state in which the magnetic material is cleaned. FIG. 6 is a diagram showing a state in which a magnetic substance is captured. 1... Channel, 2... Non-magnetic hollow bar, 3... Magnetic bar, 4... Plate-like permanent magnet, 5... Yoke, 6,
7...Nonmagnetic plate, 8...Water pipe, 9...Storage tank, 10...Valve, 11...Gas intake port, 12
...Gas exhaust port.

Claims (1)

[Claims] 1 Having a plurality of non-magnetic hollow rods in the dust-containing gas flow path and a magnetic rod that can be inserted into and taken out from the hollow rods,
Moreover, the magnetic material recovery device has a magnet for magnetizing the magnetic material rod outside the flow path, and further has a cleaning mechanism for detaching the magnetic material deposited around the hollow rod.