JPS5837495Y2 - liquid filtration equipment - Google Patents

Description

[Detailed description of the invention] This invention is a liquid filtration device in which an ionic resin is built into the filtration device for machining fluid used in electrical discharge machining, and pure water is obtained from the used fluid through the ionic resin. It is related to.

Conventionally, this type of liquid filtration apparatus has been constructed as shown in FIG.

FIG. 1 shows a machining fluid filtration device of a wire-cut electrical discharge machining device.

That is, in FIG. 1, 1 is a wire electrode, 2 is a workpiece,
Reference numeral 3 denotes a feeding device for feeding the wire electrode 1, and the well-known wire cut electrical discharge machining is performed between the wire electrode 1 and the workpiece 2.

Also, 4 is a processing liquid tank, 5 is a filtration device, 6 is a pure water device,
Reference numeral 7 designates a pipe line that communicates the processing fluid tank 4 and the filtering device 5, and reference numeral 8 indicates a pipe line that communicates the filtering device 5 and the pure water device 6.

This conventional device temporarily stores the machining fluid after machining in a machining fluid tank 4, and then supplies pure water obtained through a filtration device 5 and a pure water device 6 to a machining section formed between a wire electrode 1 and a workpiece 2. However, by repeating this circulation, the machining fluid can be reused.

However, in this conventional device, the filtration device 5 and the deionized water device 6 are provided separately, so the cost is very high, and the pipe line 8 from the filtration device 5 to the deionized water device 6 is redundant. It has the disadvantage that the filter pressure increases due to pipe resistance, etc.

This invention was developed for the purpose of eliminating the drawbacks of the above-mentioned conventional apparatus, and an example in which it is applied to a wire-cut electrical discharge machining apparatus will be described below.

That is, FIG. 2 shows a block diagram of an embodiment of the device of this invention, and the same reference numerals as in FIG. 1 indicate the same or corresponding parts.

In FIG. 2, numeral 9 denotes a filtration device which is the essential part of this invention, and its specific construction is shown in FIGS. 3 and 4.

In FIGS. 3 and 4, 10 constitutes a part of the filtering device 9, and a hollow filter layer 11.12 has an appropriate thickness.
1 is a bracket that covers the end surface of the filter layer 10; 13 is an inner pipe of the filter layer 10; 14 is a hollow cylindrical ionic resin layer disposed inside the inner pipe 13; The length in the axial direction is shorter than that of 10.

Further, 15 is a cartridge that holds the ionic resin layer 14 therebetween.

16.17 connects the ionic resin layer 14 to the filter layer 1.
0, 18 is an adapter screwed onto the support device 16, 19 is a water leakage prevention ring, 20
is a pure water discharge device screwed onto the support device 17.

Further, 21 is a gap of a desired length formed between the filter layer 10 and the ionic resin layer 14, which has an extremely large effect as described later.

Note that the filter layer 10 is made of a material such as paper, cloth, or glass fiber.

This invented device is constructed as described above, and its filtration status will now be explained.

The dirty machining fluid after machining is temporarily stored in the machining fluid tank 4, and then sent to the filtration device 9, which is the main part of this invention.

In this filtration device 9, the processing fluid passes from the outside of the filter layer 10 through the filter layer 10 as shown by arrow A, and further passes through the ionic resin layer 14 to become pure water, and the pure water is discharged as shown by arrow B. It is discharged from the device 20 and supplied to the processing section again.

In addition, the replacement of the cartridge 15 of the ionic resin layer 14 is as follows.
This is done by detaching the adapter 18 from the support device 16 and removing it together with the bracket 11.

In the above, the case where this invention is applied to a wire-cut electrical discharge machining apparatus has been illustrated and described, but it is needless to say that the present invention is not limited to this.

As explained above, this device is a liquid filtration device that combines a conventional filtration device and a pure water device into one, thereby significantly reducing costs and reducing pipe resistance. This has the advantage of allowing the filter pressure to be relaxed.

Further, according to this device, a gap of a desired length is formed between the filter layer and the ionic resin layer, and the machining liquid that has passed through the filter layer is once sent to the gap before passing through the ionic resin layer. Since the ionic resin layer is configured to pass through the gap between the levers, the pressure applied to the liquid to be treated in the gap is constant in all directions, the flow of the liquid to be treated is not uneven, and the height of the ionic resin layer is maintained. Life expectancy is measured.

In other words, if the filter layer and the ionic resin layer are placed in contact with each other without forming the above-mentioned gap, for example, when a part of the filter layer becomes clogged, the resistance there increases, and the liquid to be treated flows through the clogged part. Pass through the inside of the filter layer, avoiding the

For this reason, the liquid to be treated is difficult to flow into the ionic resin layer that is in contact with the clogged portion, or there are portions where all heat does not flow due to the degree of clogging.

This increases the burden of ion exchange on the ionic resin layer other than the part of the ionic resin layer that is in contact with the clogged area, which not only shortens the life of the ionic resin layer, but also causes the pressure on the clogged area to gradually increase, causing ions to ionize. There is a risk of damaging the resin layer.

[Brief explanation of the drawing]

Fig. 1 is a block diagram for explaining a conventional device, Fig. 2 is a block diagram for explaining an embodiment of this invented device, and Fig. 3 is a sectional view showing a filtration device that is the main part of this invention. , FIG. 4 is a partial sectional view taken along the line IV--IV in FIG. 3. Note that the same reference numerals in the drawings indicate the same or equivalent parts, 1 is a wire electrode, 2 is a workpiece, 4 is a processing liquid tank, 5 and 9 are filtration devices, 10 is a filter layer, 14 is an ionic resin layer, 2
1 is a gap.

Claims (1)

[Scope of utility model registration request] A hollow filter layer having an appropriate thickness, and a processed material disposed inside the hollow portion of the filter layer with a gap of a desired length between the filter layer and the filter layer, and the processed material passed through the filter layer and delivered to the gap. A hollow ionic resin layer having a desired thickness through which liquid passes is provided, one end surface of the filter layer and the ionic resin layer is covered with the exception of the hollow part of the ionic resin layer, and the other end surfaces of the filter layer and the ionic resin layer are covered. A liquid filtration device that is sealed at the end.