JPH07204427A - Filter for cutting liquid - Google Patents

Abstract

PURPOSE:To favorably filter a cutting liquid and discharge the filtrate efficiently by arranging a filter vessel under the bed of a cutter to enlarge the receiving range of the cutting liquid and separating chips from the cutting liquid by gravity concentration. CONSTITUTION:A filter vessel 1 is arranged under the bed of a cutter in such a way that the cutting liquid intake 1b of the filter vessel 1 is located at the point where cutting liquid drops. A chain conveyer 5 is driven by a motor 2 to rotate a rotor 71. The cutting liquid deposited in the filter vessel 1 is filtered by a rotary filter medium 7 of filter cloth. Chips and coating residues are left in the vessel 1, and only clarified liquid is allowed to enter the filter medium 7. When the level exceeds the lower position of hollow shafts 72 on both sides, the liquid overflows outside the shafts 72 to be recovered for reuse. Besides, chips settled in the vessel 1 are moved by a scraper 6 on the periphery of the chain conveyer 5 to be discharged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for filtering a cutting fluid containing cutting chips discharged in a metal cutting operation by a machine tool.

[0002]

2. Description of the Related Art As a device for filtering a cutting fluid containing cutting chips, various devices have been proposed and put to practical use. Among them, the general one is that a filter drum having a filter attached around it is rotatably installed in a tank, and a cutting fluid is introduced into the inside of the filtration drum to remove the cutting fluid in the filtration drum. There is a device in which the cutting fluid is separated into cutting fluid and the cutting fluid by a method of carrying out the cutting fluid to the outside of the filtration drum, while the cutting fluid from which the cutting dust has been removed is allowed to flow into the tank.

However, in the above filtering device, since the cutting fluid is introduced into the filtration drum, the weight of the cutting fluid is applied to the filtration drum. Therefore, special consideration must be given to the mechanism for axially mounting the filtration drum. In addition, special consideration must be given to the means for collecting the cutting chips separated from the cutting fluid inside the filtering drum inside the filtering drum, and for discharging the collected cutting chips outside the filtering drum. There was a problem.

Therefore, in order to solve the above problems, a filtering device described in Japanese Patent Publication No. 2-44564 has been proposed. This filtering device is provided with a cutting fluid feeding section in the cutting fluid feeding tank, and inside the feeding tank, a filtering member having a filter cloth attached to the outer periphery is rotatably installed and a conveyor having a scraping member attached to the outer surface is provided. The filter member is installed in association with the filter member, and the filter member is rotated by driving the conveyor by a motor. The cutting liquid input unit is connected to the cutting liquid discharge unit of a cutting machine. The received cutting fluid is filtered by a rotating filtration member installed in the feeding tank to be separated from cutting chips, and is discharged from a discharge part provided on one side of the charging tank. , Also, the cutting chips are settled on the bottom of the cutting fluid charging tank, scraped by the scraping member of the rotating conveyor and discharged from the upper part of the charging tank. To prevent clogging by sticking to the outer circumference , So that washing with injection nozzles in the interior of the filtration member.

This filtering device is installed on the side of the cutting machine and used. Since the charging tank cannot be made very large, the height of the charging tank body is increased and the filtering tank is made compact in order to make it compact. The cutting fluid is discharged only from one side of the filter member. Therefore, the range of choices for receiving cutting fluid is narrow, and in order to keep the discharge amount of filtered cutting fluid constant, it is necessary to enlarge the filter member, resulting in bulky equipment. However, there is a problem that the cost is limited or the cost becomes high.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned prior art, the present invention has a wide selection range for receiving cutting fluid,
It is an object of the present invention to provide a cutting fluid filtering device capable of efficiently filtering the cutting fluid and efficiently discharging the filtered fluid even if the filtering member is made small.

[0007]

SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the above-mentioned problems, and its constitution is one end of a filter tank which is arranged at a lower portion of a bed of a cutting machine where cutting fluid falls. The part side is extended obliquely upward and a motor is attached to the upper end of the part, and a conveyor having a scraping member attached to the outer surface of the filter tank at appropriate intervals is installed inside the filtration tank. -While it is driven by
A rotor driven by the conveyor is rotatably mounted on both sides of an extended boundary side of the filtration tank through a hollow shaft integrally attached to the rotor, and a filter cloth is stretched around the outer periphery of the rotor. The filter member is attached to form a filter member, an injection nozzle for backwashing the filter cloth is disposed inside the filter member, and the filter member is conveyed to the extended upper end side of the filter tank by a scraping member of a conveyor. It is characterized in that a discharging portion for the cut chips is formed, and the filtered cutting fluid is discharged from the hollow shaft which is also supported on both sides of the extended boundary portion.

That is, in the filtration device of the present invention, the filtration tank is formed so as to be widely arranged in the lower part of the bed of the cutting machine in a portion where the cutting fluid falls, thereby widening the range of receiving the cutting fluid and thereby cutting chips. The specific gravity of the cutting fluid is preliminarily selected, and an extension is provided diagonally above one end of the filtration tank, and a conveyor is internally attached with a scraping member from the upper end side to the other end of the filtration tank. A filter member made of a filter cloth and a rotor which is driven and rotated together with a conveyor are installed inside the extended boundary portion of the filter tank, and the rotor is supported on both sides of the filter tank. By removing the chips from the hollow shafts on both sides by the filtering member and discharging the filtered liquid, the filtering member can be downsized and the filtering efficiency can be improved.

[0009]

Embodiments of the present invention will now be described with reference to the drawings.
1 is a front view of an example of the present invention, FIG. 2 is an enlarged front view of a filtering member, and FIG. 3 is a side view of FIG.

In the figure, 1 is a horizontally long filtration tank which is arranged at the lower part of a bed of a cutting machine where cutting fluid falls, and 1a is formed by extending one end of the filtration layer 1 obliquely upward. The extended portion 1b is an inlet for cutting fluid containing cutting chips formed on the upper surface side of the intermediate portion of the filtration tank 1 with a required frontage size, 2
Is a motor mounted on the upper end of the extending portion 1a, 2a and 3 are chain wheels arranged in the upper end of the extending portion 1a and driven by the motor 2, 3a is a chain wheel 2a, Chain 4 wound around 3 is a chain wheel 4 which is rotatably arranged at the other end of the filter tank 1, and 5 is a chain conveyor having scraping members 6 mounted on the outer periphery at appropriate intervals. When the motor 5 is driven by suspending the conveyor 5 around a chain wheel (not shown in the figure) coaxial with the chain wheel 3 and a chain wheel 4, the conveyor 2 is rotated in the direction of the arrow.

Reference numeral 7 denotes a filtering member, which is provided with hollow shafts 72, 72 integrally mounted with rotors 71, 71 driven by a chain of the chain conveyor 5 for connecting the filtering tank 1 and the extending portion 1a. It is configured to be rotatably supported on the boundary side, and a cloth 73 is attached to the outer periphery between the rotors 71, 71. Incidentally, the filter cloth 72 is usually made of special nylon, and the upper side of the extending portion 1a is formed to be slightly higher in order to install the filtering member 7.

Reference numeral 8 is an injection nozzle disposed inside the filter member 7 via the hollow shaft 72, for backwashing suspended matter such as paint dust adhered to the outside of the filter cloth 73. In the figure, reference numeral 9 denotes a discharging portion provided above the extending portion 1a for discharging cutting dust such as cutting chips, and 10 denotes a caster attached to the filtration tank 1.

The cutting fluid filtering device of the present invention is constructed as described above, and its operation is as follows. First, the filter tank 1 is arranged in the lower part of the bed of the cutting machine so that the cutting liquid dropping port 1b is applied to the portion where the cutting liquid falls, and the motor 2 is driven. While falling inside, the chain conveyor 5 rotates in the direction of the arrow, and the rotor 71 rotates with the movement. In addition, the injection nozzle 8 in the filtering member 7
A clean liquid from the back wash the filter cloth 73 from its inside.

In the above state, the cutting fluid accumulated in the filter tank 1 is filtered by the filter 73 in the rotating filter member 7, and the cutting dust such as cutting chips and the paint residue are left in the filter tank 1. , Only the cleaned liquid enters the filter member 7,
The liquid and the clean liquid sprayed from the spray nozzle 8 and dropped into the filter member overflows to the outside of the two shafts 72, 72 when the liquid level reaches above the lower parts of the hollow shafts 72, 72 on both sides. It is collected by flushing and used again during cutting work.

On the other hand, the cutting waste such as the cutting powder settled in the filtration tank 1 is moved in the direction of the arrow by the scraping member 6 attached to the outer periphery of the chain conveyor 5, and is raised in the extending portion 1a to be discharged. It is discharged from 9 and disposed of.

In addition to cutting powder, the cutting fluid also contains suspended matter such as paint debris, and this suspended matter adheres to the surface of the filter cloth 73 without settling in the filtration tank 1. The deposits are backwashed by the jet of clean liquid from the jet nozzle 8 and fall into the filtration tank 1, and together with the cutting chips, the chain conveyor 5
It is scraped off by the scraping member 6 and discharged from the discharge section 9.

Therefore, the cutting liquid containing cutting chips and the like is removed in the filtering member 7 and only a clean liquid remains in the filtering member 7 and is hollow together with the liquid jetted from the jet nozzle 8. Since it overflows from the shafts 72, 72 to both sides, it is efficiently collected, while the cutting chips such as cutting chips are lifted up to the discharge section 9 and discharged downwardly therefrom, so that the cutting layer below the discharge section 9 is discharged. Since it can be collected labor-savingly only by transporting, arranging a container, etc., and can be disposed of labor-savingly, the cutting fluid can be filtered efficiently.

[0018]

The present invention is as described above, and since the filtration tank can be arranged at the lower part of the bed of the cutting machine, the acceptance range of the cutting fluid can be set wide and the filtration tank can be set in the longitudinal direction. It is possible to select the specific gravity of the cutting chips and the cutting fluid, and the size of the filter member can be reduced accordingly, so that the entire apparatus can be made compact. Also, for cleaning work, if you pull out the filtration tank from the cutting machine,
The entire apparatus or required parts can be washed extremely easily.

[Brief description of drawings]

FIG. 1 is a front view of an example of the present invention.

FIG. 2 is an enlarged front view of a filtering member.

FIG. 3 is a side view of FIG.

[Explanation of symbols]

 1 Filter tank 1a Extension part of the filter tank 2 Motor 3, 4 chain car 5 Chain conveyor 6 Scraping member 7 Filtering member 71 Rotor 72 Hollow shaft 73 Filter 8 Injecting nozzle 9 Discharging part of chips etc.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B01D 24/46 33/44 33/58 B23Q 11/10 Z B01D 33/36

Claims (1)

[Claims] 1. A filtration tank, which is arranged at a portion where a cutting fluid falls under a bed of a cutting machine, has one end side extending obliquely upward and a motor mounted on the upper end thereof. The inside of which is a conveyor with scraping members attached at appropriate intervals so that the conveyor is driven by the motor, and the rotor driven by the conveyor is integrally attached to the conveyor. Rotatably mounted on both sides of the extended boundary side of the filtration tank via a hollow shaft, and a filter member is formed by attaching a filter cloth to the outer periphery of the rotor, and the inside of the filtration member An injection nozzle for backwashing the filter cloth from the inside is provided, and a discharge portion for the chips conveyed by the scraping member of the conveyor is formed on the extension upper end side of the filtration tank, and the extension boundary is also provided. Drain the filtered cutting fluid from the hollow shaft supported on both sides of the part A filtering device for cutting fluid, characterized in that