JPH0741509B2 - Filtration device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for filtering discharged cutting oil containing metal pieces called chips that are discharged in a metal cutting work process.

2. Description of the Related Art There are various types of devices for filtering the discharged cutting oil. That is, the discharged cutting oil as disclosed in JP-A-55-84560 is put into a treatment tank, and in the treatment tank,
A drum in which a magnet is incorporated is rotated, chips are attached to the surface of the drum, and the chips adhering to the surface are scraped off and accumulated, or Japanese Examined Patent Publication No. 61-6184.
In the processing tank as disclosed in Japanese Patent Publication No. 5, the drum with the filter cloth wrapped around the body is rotated, the discharged cutting oil is put into the drum, and the discharged cutting oil is filtered in the drum. Then
In this type, chips are carried out from the drum, the filtered cutting oil is collected in a processing tank, and the collected cutting oil is pumped by a pump or the like.

Both types of machines have their respective merits, but in general, the former type rotates the drum in which the magnet is contained in the discharged cutting oil that is put into the processing tank that puts the discharged cutting oil, and rotates the ram. The latter is superior in filtration efficiency because it is intended to attach the cutting chips to the surface, but on the other hand, the latter throws the discharged cutting oil into the drum in which the filter cloth is stretched around the body. It has the drawback of damaging the filter cloth and applying a load of discharged cutting oil to the drum, which causes various inconveniences.

The present inventor has completed the invention disclosed in Japanese Patent Application Laid-Open No. 43320/1988, which eliminates the latter drawback.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the invention disclosed in Japanese Patent Laid-Open No. 43320/1988, since the filtering cutting oil recovery tank is arranged adjacent to the discharged cutting oil input tank, the factory site Under other environmental conditions, if the filtration cutting recovery tank cannot be placed near the discharged cutting oil recovery tank, the apparatus according to the above invention cannot be installed. The present invention intends to provide a filtering device capable of treating discharged cutting oil if a collecting cutting oil feeding tank can be installed under any conditions.

Means for Solving Questions As an optimum type of the present invention as a small filtering device, a bearing is arranged on a side plate, a cutting oil feeding port is provided, and a bottom plate is formed in an arc shape in cross section, and one of the bottom plates is formed. In the bearing of the discharged cutting oil input tank configured as the rising inclined plate of the, the filter cloth filter is stretched on the body of the cylindrical body, the packing is arranged on one side disk concentrically with the side disk, and the rotation mechanism is installed. A rotating drum formed by fitting and fixing the conduit insertion metal provided, and fixing the rotating shaft to the other side disk, and a rotating shaft arranged on the rotating drum while slightly floating from the bottom plate of the discharged cutting oil input tank, The metal or an annular shaft surrounding the metal is rotatably supported, and a fluid pressure feed pipe is arranged inward from the metal or the annular shaft. Filter cutting oil introduction hole of conduit protruding to Position and fix the forming portion through the rotary drum,
A nozzle directed toward the inside of the filter cloth stretched on the rotary drum is attached to the protruding end of the fluid pressure feeding pipe, and a rotary drive source for rotating the rotary drum is used to release chips from the rising inclined plate of the bottom plate of the discharged cutting oil input tank. Two endless rotation bands are supported and fixed on the gutter part side and between the side plates above the chip discharge part by appropriate means, and a scraper is hung from the rotary drive source to the outer circumference of both sides of the rotary ram to fix the scraper. The scraper is suspended so as to slide on the surfaces of the bottom plate and the rising inclined plate.

Example 1 is a discharged cutting oil input tank. Reference numeral 2 denotes a discharged cutting oil charging section for charging the discharged cutting oil into the discharged cutting oil charging tank.
Reference numerals 3 and 4 denote left and right side plates of the peripheral wall of the discharged cutting oil input tank 1.

The bottom plate 5 of the discharged cutting oil feeding tank 1 is not limited to the configuration of the illustrated embodiment, but is formed in a chordal cross section of the same shape which is slightly larger than the circumference of the rotary drum described later, and one of them is formed. As in the case of a normal filtration device, it is optimal to have a structure in which the rising end plate 5A having the tip as the chip discharging part 5B is extended in the rotation direction of the rotary drum (counterclockwise in the illustrated embodiment). It is configured as Japanese Patent Laid-Open No. 63320/1988.
It is disclosed in the publication.

In the rotary drum 6 shown in this embodiment, side discs 6B and 6C in which a disc is attached to a ring-shaped bone 6A are arranged on both sides, and an angle 6D is bridged over the ring-shaped bones constituting both side discs, and a filter cloth 6E is attached to this. It shows the configuration in which the body of the rotating drum is formed by stretching it. However, it goes without saying that the structure of the rotary drum is not limited to the above structure as long as it has the same effect. This filter cloth 6E also includes a wire mesh and a small hole perforated plate, and in short, it has a filter function and is a filter that is commonly used in this type of device.

Further, at least one side disk (6B in the illustrated embodiment) of both side disks 6B and 6C of the rotary drum 6 is provided with a filter cutting oil introduction hole 7A which functions to pump out the filter cutting oil inside the rotary drum. A conduit 7 is found concentrically penetrating the side disk in the rotary drum. Needless to say, the introduction hole perforation portion of the conduit may be integral with the conduit or may be added to the conduit outside the rotary drum.
The portion of the conduit 7 where the filtering cutting oil introduction hole is formed is located inside the rotating drum 6 from the side disk 6B of the rotating drum 6 from outside the discharged cutting oil input tank 1. When the filtered cutting oil reaches the portion to be filled, it plays a role of discharging the filtered cutting oil from the rotary drum to the outside.

Therefore, although not shown, a pump may be arranged at the base end, and the base end may be seen in the filtering cutting oil recovery tank. Furthermore, since the conduit 7 is fixed without receiving the rotational force of the rotary drum 6, the side disk 6B of the rotary drum 6 which penetrates the conduit 7 has the side disk 6B concentric with the side disk. A metal 8 that is rotatable and does not leak oil, and a packing 9 are arranged in parallel, and a conduit portion in which the filtering cutting oil introduction hole is formed is penetrated. It is also possible to dispose a support tool 6F inside the side disk (6C in the illustrated embodiment) opposite to the side disk 6B penetrating the conduit 7 so as to support the tip of the conduit portion where the filtering cutting oil introduction hole is formed. However, in that case, it is needless to say that in that case, the support must have a configuration in which the left side disk 6C is rotatable.

In addition, the filter cloth of the rotary drum 6 passes through the conduit 7 and from above the forming portion of the filter cutting oil introduction hole 7A of the conduit.
6E Fluid pressure feed pipe 10 that feeds the fluid to be jetted toward the inside
Are arranged, and a nozzle 11 is arranged at the tip thereof. A fluid pumping device is, of course, arranged at the base of the fluid pumping pipe 10, but this is not shown.

Further, although not shown, the fluid pumping pipe is arranged outside the conduit 7 so that the fluid is pumped from the outside of the filter cloth 6E of the rotary drum 6, and the fluid is jetted from the outside to the filter cloth of the rotary drum. Of course, it may be arranged. The rotary drum 6 is rotatably arranged in the discharged cutting oil feeding tank 1.
The arrangement method is as follows:
To the bearings 3A and 4A attached to the side plates 3 and 4 of the discharged cutting oil input tank 1 by slightly floating it from the bottom plate of the rotating drum.
In the illustrated embodiment in which the rotary shafts 6F and 6G provided on 6B and 6C are rotatably supported, the metal 8 attached to the side disk 6B penetrating the conduit 7 is used as the rotary shaft and is opposed to the side disk 6B. Side disk 6C
The rotating shafts are fixed at the center of the outside, and the rotating shafts are supported by bearings provided on the side plates.However, a pipe and an annular shaft surrounding the metal are provided outside the metal. Of course, a supporting structure may be used.

According to the present invention, since the rotary drum is arranged in the discharged cutting oil charging tank as described above, when the discharged cutting oil is charged into the discharged cutting oil charging tank, the rotating drum produces buoyancy.

For the rotation of the rotary drum 6, a motor or a rotary body which is rotated by receiving the rotational force of the motor arranged outside the rotary drum is used as the rotary drive source 12, and the rotary body is rotated by the transmission of the rotational force.

The rotary drive source 12 is an inclined plate 5A diagonally above the rotary drum 6.
The side plates 3 and 4 are arranged by a suitable means at a position closer to and higher than the tip of the inclined plate 5A.

An endless rotary band 13 such as a belt or a chain is suspended between the rotary drive source 12 and the rotary drum 6 in parallel on the circumferences of the disks 6B and 6C on both sides of the rotary drum 6. A scraper is fixed and bridged between the endless rotation belts 13 such as a belt and a chain suspended in parallel.

The endless rotation belt 13 such as the belt or the chain described above is rotated in the direction of the arrow, and the scraper 14 laid over the endless rotation band 13 is fixed so that the bottom plate 5 and the inclined plate 5A are rubbed in the direction of the arrow and rotated. I am doing it.

Next, the state when the present filtering device having the above configuration is operated will be described.

The discharged cutting oil is put into the discharged cutting oil input tank 1, and the rotation drive source is supplied.
Power 12 and move it.

When the discharged cutting oil is put into the discharged cutting oil supply tank 1, the rotating drum 6 is rotated by a power from the rotary drive source 12 in a state in which the rotating drum 6 has a buoyancy due to the input. The endless rotation band 13 transmits the turning power to the circumferences of the disks 6B and 6C on both sides of the rotary drum 6, and the rotary drum 6 rotates.

At this time, the discharged cutting oil introduced into the discharged cutting oil feeding tank 1 enters the rotary drum 6 from the filter cloth 6E of the rotary drum 6 as the filtered cutting oil. The discharged cutting oil charged into the discharged cutting oil charging tank 1 and the filtered cutting oil contained in the rotary drum 6 have the same water level.

When this water level reaches the filtering cutting oil introducing hole 7A of the conduit 7, the filtering cutting oil is introduced into the conduit 7 from the filtering cutting oil introducing hole 7A of the conduit 7. When a pump is arranged at the base end of the conduit 7, it is pumped up by the pump, and when the base end of the conduit 7 is in the filtered cutting oil recovery tank, it is pumped out to the filtered cutting oil recovery tank. The scraper 14 hung on the endless rotation belt 13 such as a belt or a chain suspended in parallel to rotate the rotary drum 6 mixes in the discharged cutting oil put into the discharged cutting oil input tank 1 and discharge cutting The chips that have settled on the bottom plate 5 of the oil feeding tank 1 are scraped off, and this is cut from the bottom plate 5 to the inclined plate 5A.
It is moved to the upper side and is thrown from the throwing portion 5B at the tip of the inclined plate 5A. A chip collecting box 15 is placed below the throwing section 5B at the tip of the inclined plate, and the thrown chips are collected in the chip collecting box 15.

A fluid pressure feed pipe 10 is seen from the conduit 7 to the inside of the tensioned filter cloth of the rotary drum 6, and a nozzle 11 attached to the tip thereof.
When the fluid is ejected from the filter cloth 6F toward the stretched filter cloth 6F, the chips adhering to the outer surface of the filter cloth are blown off and the filter cloth 6E is prevented from being clogged.

Although not shown, a measure is provided on the outer periphery of the side disk of the rotary drum so that the endless rotation belt 13 such as a belt or a chain that is suspended does not slip or shift.

In the above description of the embodiment, the case where the present invention is configured to be the most suitable for the small-sized filtration device has been described. However, not only the mold shown in the illustrated embodiment but also the discharged cutting oil feeding tank is provided with a bottom plate as shown in FIG. It is a flat type with a flat surface, and the endless rotation band that transmits rotational power from the rotary drive source to the rotary drum is rotated to the rotary drum via the tension rotary body or the auxiliary rotary rotary bodies 16, 17, and 18. It may be arranged such that the force can be sufficiently transmitted and the scraper fixed to the endless rotating body rises from the surface of the bottom plate and slides on the inclined plate surface.

Effect Since the present invention is configured as described above, even if the filtration cutting oil recovery tank cannot be arranged near the discharged cutting oil input tank due to the factory site or other reasons, according to the present invention, The discharged cutting oil can be filtered in a state suitable for the environment.

[Brief description of drawings]

FIG. 1 is a front sectional view, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is a front sectional view showing another embodiment of the present invention. Cutting oil injection part 3, 4,
Is a side plate of the discharged cutting oil input tank, 3A and 4A are bearings, 5 is a bottom plate of the discharged cutting oil input tank, 5A is a rising inclined plate of the discharged cutting oil input tank, 5B is a chip discharging part 6, a rotating drum, and 6A Is an annular bone, 6B,
6C is a side disk, 6D is an angle, 6E is a filter cloth, 6F and 6G are rotating shafts, 7 is a filtered cutting oil conduit, 7A is an introduction hole, 8 is metal, 9
Is a packing, 10 is a fluid pressure feeding pipe, 11 is a nozzle, 12 is a rotary drive source, 13 is an endless rotation band, 14 is a scraper, and 15 is a chip collection box.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B01D 33/44 33/58

Claims (1)

[Claims] 1. A bearing for a discharged cutting oil supply tank, wherein a bearing is arranged on a side plate, a discharge cutting oil input port is provided, a bottom plate is formed in an arc shape in cross section, and one rising slope plate of the bottom plate is formed. A filter cloth filter is stretched on the body of the cylindrical body, and on one side disk, concentric with the side disk, a packing is arranged and a conduit insertion metal provided with a rotating mechanism, and an annular shaft is fitted and fixed, A rotary drum having a rotary shaft fixed to the other side disk is rotatably supported by a rotary shaft which is slightly floated from the bottom plate and arranged on the rotary drum and the metal or an annular shaft surrounding the metal, From the metal and the annular shaft, a fluid pressure feed pipe is arranged inside, and the filtered cutting oil introducing hole forming portion of the conduit whose tip protrudes upward from the filtering cutting oil introducing hole forming portion is provided in the rotary drum. Position it through and fix it in the fluid A nozzle is attached to the inside of the filter cloth that is stretched on the rotary drum at the protruding end of the feed pipe, and a rotary drive source that rotates the rotary drum is used as a chip discharge part of the rising slope plate of the bottom plate of the discharged cutting oil input tank. On the side, and between the side plates above the chip throwing section, supported and fixed by an appropriate means, and from the rotary drive source to the outer circumferences of both sides of the rotary drum, two endless rotary bands fixed by hanging a scraper are A filtering device in which a scraper is suspended so as to slide on the surfaces of the bottom plate and the rising inclined plate.