JP2000176215A - Filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter device capable of easily undergoing filter exchange work at the installation site in a limited area. SOLUTION: In the filter device 1 provided with a filter drum 10 driven to be rotated, the open part 2k having a large opening from above the liq. surface 4 of liq. to be filtered to the vicinity of a discharge port 6 is provided at an inclined surface part, and the cap member 5 fixed in freely attachably and detachably so as to close the open part 2k without liq. leakage and for enabling solid matter G to fall from the discharge port 6 by the cooperation with a scraping member 5 is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtering device, for example, a cutting oil before purification, which has been used in a metal cutting process and contains chips after being used, is separated into chips and cutting oil, and the cutting oil after purification. The present invention relates to a filtration device used for enabling repeated use by obtaining the above.

[0002]

2. Description of the Related Art Conventionally, a cutting oil to be filtered (also referred to as a pre-purification cutting oil) containing cutting chips or abrasive powder after using metal cutting or grinding by various machine tools has been cut. Cutting oil that separates into powder and cutting oil to make it reusable
Many filtration devices for obtaining cutting oil after purification) have been proposed.

In such a filtration device, a filter having a predetermined mesh corresponding to the filtration accuracy is provided so as to be replaceable on the outer peripheral surface of the filter drum which is driven to rotate, and the purified cutting oil which has been filtered is temporarily stored inside the filter drum. Many filtration devices have been put into practical use so as to remove the cutting oil after purification from the opening on the side surface of the filtration drum.

[0004] These filtration devices are of a so-called natural flow type based on an operation principle of obtaining and recovering a filtrate passed through a filtration filter without positively applying pressure to a filtrate to be treated. is there. According to such a conventional filtration device, the cutting oil before filtration mixed with the solid matter including the swarf is supplied so as to have a liquid surface of a predetermined height, and a plurality of cutting oils fixed to a continuously driven chain are provided. While the solid material such as chips is conveyed to the discharge port along the inclined surface of the tank body by the raising member, a part of this chain meshes with the chain sprocket which is fixed to the filtration drum. , And is driven to rotate around the injection tube also serving as a rotation axis.

[0005] The filter drum is provided with an opening communicating with the side opening of the tank main body, and the purified cutting oil filtered by a filter provided on the outer peripheral surface of the filter drum flows out to the tank. It is configured as follows.

[0006]

SUMMARY OF THE INVENTION In the filtering apparatus constructed as described above, it is necessary to replace the filter when the filter is damaged or when the filter is replaced regularly. Conventionally, during this replacement work,
The top plate detachably provided to the tank body was removed, and the filter filter of the filtration drum was replaced from above or from the side.

However, in recent years, there has been a demand for installing machine tools so as to be located above the filtration device. In this case, it becomes impossible to replace the filtration filter of the filtration drum by removing the top plate as described above. Therefore, it is only necessary to pull out the filtration device from below the machine tools and remove the top plate, but for this, it is necessary to secure an extra installation area for replacing the filtration filter of the filtration device, Further, various pipes must be removed, which is practically impossible.

On the other hand, below the discharge port for discharging chips,
An installation area for the chip collection box is required to locate the movable chip collection box, but the area where the chip collection box is located must be moved to another location. Will be open to the public. Therefore, if the filter filter replacement work of the filtration drum is performed from the area where the chip recovery box is located, not only is it unnecessary to secure an extra installation area for the filter filter replacement work, but also the filter drum can be replaced. It is very convenient because it is near.

Therefore, the filtration device of the present invention has been made in view of the above circumstances, and can easily perform a filter filter replacement work at an installation site installed in a limited installation area. The purpose is to provide a filtration device.

[0010]

According to the present invention, there is provided a tank body for storing a liquid to be filtered and a purifying liquid introduced from an inlet, and an endless tank. By moving the plurality of lifting members fixed to the body along the inclined surface of the tank main body, the solids in the liquid to be filtered can be discharged from the outlet provided on the upper side of the inclined surface. Raising means for dropping, a filtration filter provided on the outer peripheral surface for flowing the liquid to be filtered into the inside and filtering, and an opening opened at least on a side surface for flowing the purified liquid after filtration to the outside A filtering drum, which is rotatably driven, and an injection unit for washing the filtration filter, wherein the inclined surface portion discharges the liquid to be filtered from above a liquid surface of the liquid to be filtered. Large near the exit A lid member which forms an opening to be opened, is detachably provided so as to close the opening without liquid leakage, and allows the solids to drop from the discharge port in cooperation with the scooping means. Are provided.

Further, the lid member has a seal member interposed between a shape portion covering both side edges of the inclined surface portion of the tank body and a mounting flange portion fixed to a lower edge portion of the opening. It is characterized in that a flange portion and a locked portion locked by the locking portion of the tank main body are provided.

The lid member may further include a plate member that is flush with the tank body so as to allow the solid to drop from the discharge port in cooperation with the scooping means. Features.

[0013] The liquid to be filtered is a cutting oil before filtration, which is used in metal cutting and contains chips, and the cleaning liquid is separated into chips and cutting oil after filtration. It is a cutting oil.

[0014] The filter drum is provided in a stationary state with respect to the machining device for metal cutting, and further includes a chip conveying means for conveying the chips contained in the cutting oil before filtration to the discharge port. It is characterized by being disposed above the.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing a part of a filtration device 1 according to one embodiment. FIG. 2 is a cross-sectional view taken along line XX of FIG. 1 and illustrates the configuration of the filtration drum and the injection pipe.

Referring to FIGS. 1 and 2, a tank body 2 configured to also serve as a mounting base for all components of the filtration device 1 is horizontally adjusted and fixed on a floor surface in a factory. The installation legs are fixed to the four corners, and as shown in the figure, are installed under the machine tool 100 which is various types of machining devices, with a part of the machine tool being infiltrated. Dirty liquid, which is the cutting oil before filtration before filtration, is placed in the tank body 2 at a liquid level 4 indicated by a dashed line.
Is temporarily stored with some fluctuations.

The tank body 2 is provided with an input section 3 for introducing cutting oil to be filtered containing cutting chips and grinding powder used in cutting and the like in the machine tool 100 on the upstream side. As shown in the figure, an inclined surface portion extending obliquely upward is formed on the downstream side, and a chip discharge port 6 is formed at the uppermost portion between the left and right side plates 2a, 2b,
A chip collection box 7 appropriately moved below the chip discharge port 6
It is configured so that chips G fall into the inside.

The left and right side plates 2a constituting the tank body 2
Between shafts 2b, there is provided a shaft 11 which also serves as an injection pipe for spraying a purifying liquid so as to eliminate clogging of the filtration filter. An inner race is fixed to this shaft 11, and an outer race is provided on the filtration drum. The filter drum 10 is rotatably supported by a pair of left and right bearings 35 fixed to the filter drum, and is a type of lip rubber seal having a V-shaped cross section as shown in the drawing, so that a side portion of the filter drum can be formed. V-seal 36 for maintaining a liquid-tight state by sliding contact with
33 are provided, and are configured to pivotally support the filtration drum 10 so as to be slidable in a liquid-tight state.

Further, an opening 15 is formed on the right side surface of the filtration drum 10, and the filtration after filtration is carried out into the purification tank 2c through the opening 13 of the right side plate 2b communicating with the opening 15. It is configured so that cutting oil can flow in.

As described above, by configuring the filtration drum 10, if necessary, the filtration drum 10 together with the shaft 11 is provided.
Are moved in parallel along the inner wall surfaces of the left and right side plates 2a, 2b, so that they can be easily taken out. However, when replacing the filter, the liquid level 4
In many cases, the filtration drum 10 is kept in a free state without being removed. That is, in order to take out the filtration drum 10 to the outside, it is necessary to set the liquid level to zero level, so that extra steps are required.

On the other hand, a plurality of raising members 9 are fixed to a chain 8 shown by a broken line and driven by a motor with a gear head (not shown) in the direction of the arrow shown in FIG. Is meshed with a chain sprocket 12 fixed to the edge of the outer peripheral surface of the filtration drum 10, so that the filtration drum is driven to rotate in the direction of the arrow.

Referring again to FIG. 1, a lid member 5 is provided on the inclined surface of the tank body 2 so as to be detachable.
The opening 2k formed between a and 2b is closed without liquid leakage.

Referring further to FIG. 3, which is a cross-sectional view taken along line YY of FIG.
shape portions 30a, 3a that cover both side edges of the inclined surface portions a, 2b
0b is formed by bending the plate member 30 or the like, and the mounting flange portion 1 is fixed to the lower edge of the opening 2k between the inclined surfaces of the left and right wall surfaces 2a, 2b of the tank body 2.
A pair of flanges 16 that interpose a sealing member 17 such as rubber between the tank body 8 and a pair of locked portions that are locked by stud bolts 14 that are locking portions fixed to both side surfaces of the tank body 2. A hook 15 is provided. Moreover, you may make it fix from a side surface with a bolt nut.

The plate member 30 is further fixed with a backing plate member 22 which is continuous with the bottom surface of the tank body 2 flush with the bottom surface of the tank body 2 so that the gap between the plate member 30 and the frying plate 9 is kept constant. I have to.

The lid member 5 configured as described above is similar to that shown in FIG.
Is fixed as shown by the solid line. When the filtration device 1 is started from this state, the purified cutting oil filtered by the filtration filter 118 flows out into the purification tank 2c in the direction of the arrow to perform filtration. On the other hand, as shown in FIG. 1, solid matter G such as cutting chips settled on the bottom surface is carried obliquely upward by the raising member 9.

When replacing the filter of the filtration drum, the power is turned off so that the filtration drum 10 rotates freely, the chip collecting box 7 on the cart is moved to another location, and the space between the flange portions 16 and 18 is removed. First, the bolt and nut 19 fixed in a sealed state are removed. Alternatively, a bolt screwed into one of the screw holes of the flange portions 16 and 18 is removed. Thereafter, the hook 15 is removed from the stud bolt 14 by lifting it up to the position shown by the broken line. At this time, the work is more easily performed by gripping the handle 33 fixed to the lid member 5.

By completely separating the lid member 5 from the tank main body 2 as described above, the opening 2k is largely opened as shown in FIG. Since the inside can be visually checked and the hands can be put in, the replacement work of the filter can be performed. When the replacement operation is completed, the lid member 5 is brought into the state shown in FIG. 1. At this time, the hook 15 can be set by first hooking the stud bolt 14, so that it is safe.

The above-mentioned lid member 5 is not limited to the shape shown in the figure, but may be an inclined surface for guiding the chips to the discharge port and having no inclined portion for separating the liquid in the chips. Further, the hook may be formed further below in addition to the above portion.

FIG. 4 is a right side view showing another embodiment of the lid member 5, and FIG. 5 is a sectional view taken along line XX of FIG.

In FIGS. 4 and 5, the same reference numerals are given to the components already described and the description is omitted. The flange portion 18 is welded or bent so as to be continuous from the edges of the left and right wall surfaces 2a and 2b. It is provided after processing. Further, the stud bolt 14 is fixed as shown in the drawing so as to be along the edge of the opening 2k on the side close to the filtration drum 10.

Further, a seal 1 made of rubber or the like
7 is drilled so that the hole 17a is aligned with the hole 18a of the flange 18 and the position of the stud bolt 14 as shown. A lid member (not shown) may be configured to be detachable from the flange portion 18 and the stud bolt 14 configured as described above.

FIG. 7 is a front view of the filtering apparatus provided with a hinge conveyor 40 which is a dedicated chip conveying means for conveying chips contained in the cutting oil before filtration to the discharge port 6. In this drawing, the same reference numerals are given to the components already described, and the description thereof will be omitted.
A conveyer 101 is provided for carrying cutting oil before filtration in which chips are mixed. In addition, the hinge conveyor 40 has the input port 3
Is continuously operated by a not-shown key motor so as to form an endless orbit from the lower part of the filter drum 10 to the discharge port 6 through the left side of the filter drum 10. To minimize damage to

When the hinge conveyor 40 is provided as described above, the top plate cannot be removed as in the conventional case, and it is very important that the opening 2k can be opened as described above. .

Needless to say, the present invention is not limited to the configuration described above, and the case where cutting fluid is used as the liquid to be filtered before filtration is described. However, the present invention is not limited to this.
This is a liquid filtration device in which solids are mixed in the liquid, and can be applied to all cases where the top plate cannot be attached or detached.

[0036]

As described above, according to the present invention,
It is possible to provide a filtering device capable of easily performing a replacement operation of a filtration filter at an installation site installed in a limited installation area.

[0037]

[Brief description of the drawings]

FIG. 1 is a front view in which main parts of a filtration device according to an embodiment are cut away.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a sectional view taken along line YY of FIG. 1;

FIG. 4 is a right side view of another embodiment.

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 is a view showing a filter exchange operation.

FIG. 7 is a front view of the filtering device provided with a hinge conveyor 40 which is a dedicated chip conveying means for conveying chips contained in the cutting oil before filtration to the discharge port 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filtration apparatus 2 Tank main body 3 Input port 4 Liquid level 5 Lid member 6 Discharge port 7 Chip recovery box 8 Chain 9 Raising member 10 Filtration drum 14 Stud bolt 15 Hook 16 Flange part 17 Seal 18 Flange part 19 Bolt nut 118 Filtration Filter G Solid (chip)

Claims (5)

[Claims] 1. A tank main body for storing a liquid to be filtered and a purified liquid introduced from an input section and a plurality of lifting members fixed to an endless body are moved along an inclined surface portion of the tank main body. By means of a lifting means for dropping solids in the liquid to be filtered from a discharge port provided on the upper side of the inclined surface portion, and an outer peripheral surface for allowing the liquid to be filtered to flow inside and to be filtered. A filtration filter to be provided, including an opening that is opened at least on a side surface to allow the purified liquid after filtration to flow out, a filtration drum that is driven to rotate, and an injection unit for cleaning the filtration filter. A filtering device, comprising: an opening portion which is formed in the inclined surface portion so as to open greatly from above the liquid surface of the liquid to be filtered to near the discharge port, and is attached and detached so as to close the opening portion without liquid leakage. Freely provided And a filtration apparatus characterized by comprising a lid member for the cooperating with said solid products of the said 掻揚 means enabling dropped from the discharge port. 2. The sealing member is interposed between a shape portion covering both side edges of the inclined surface of the tank body and a mounting flange fixed to a lower edge of the opening. The filtering device according to claim 1, further comprising a flange portion and a locked portion locked by the locking portion of the tank body. 3. The lid member may further include a plate member that is flush with the tank body so as to allow the solid to drop from the discharge port in cooperation with the scooping means. The filtration device according to claim 2, wherein 4. The liquid to be filtered is a pre-filtration cutting oil which is used in metal cutting and contains cutting chips, and
The filtering device according to any one of claims 1 to 3, wherein the purified liquid is filtered cutting oil after separation into chips and cutting oil. 5. The filter drum, wherein the filter drum is provided in a stationary state with respect to a machining device for metal cutting, and the chip transport means for transporting the chips contained in the cutting oil before filtration to the discharge port. The filtration device according to claim 4, wherein the filtration device is disposed above the filter.