JPH052271Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a device for removing chips floating on the liquid surface in a coolant tank that collects coolant liquid discharged from processing machines such as cutting and grinding machines. It is.

<Prior art> Conventional devices of this type are shown in Figures 5 and 6.
As shown in the figure, a magnetic drum 52 is placed at one end of the dirty tank 51 of the coolant tank and is rotated with the upper part exposed above the liquid level, so that the dirty coolant liquid containing sludge such as chips is transferred to the magnet. It flows into the Daddy tank 51 from a gutter 54 installed at a far position opposite to the position of the drum 52, and the chips are allowed to settle and separate while flowing over a long distance to the magnetic drum 52 over time. , the outer periphery of the magnetic drum 52 and the magnetic drum 5
The liquid flows in the direction of the arrow through the gap 56 between the drum bottom plate 55 that surrounds the lower half of the outer periphery of the drum 2 and enters the intermediate tank 58 through the communication port 57, so that the optimum liquid level height in the Daddy tank 51 can be maintained here. On the other hand, chips entangled in a spongy manner in the dirty coolant liquid flow toward the magnetic drum 52 according to the flow in the dirty coolant liquid, and The sludge is absorbed and dehydrated by the rubber roller 60 that is always pressed against the outer periphery of the magnetic drum 52 above the magnetic drum 52, and is turned into sludge and sent to a chip receiving box 61 outside the tank.
Furthermore, the settled chips and other sludge were scraped up by the operator to the sludge uplifting part 53, drained, and then discharged into the sludge box 62.

<Problem that the invention aims to solve> In recent years, in order to improve the cutting and grinding performance of metal processing machines, a large amount of surfactants have been mixed into the coolant liquid, resulting in the generation of many bubbles. They rise to the surface of the liquid, intertwining with each other and growing like a sponge, forming a floating mass of whisker-like chips.

According to the above-mentioned conventional device, the spongy chips floating on the liquid surface try to be absorbed by the magnetic drum 52, but as described above, the spongy chips are surrounded by bubbles, and the magnet net drum 5
Since the force pressing against the outer periphery of the magnetic drum 2 is also passive due to the slow flow of the coolant liquid in the dirty tank 51, it cannot be adsorbed to the outer periphery of the magnetic drum 52 and lifted from the liquid surface. As a result, the spongy chips grow more and more and cover the entire liquid surface of the dirty tank 51, and eventually the thickness of the spongy chips increases and overflows outside the tank, polluting the surrounding environment. For this reason, workers had to remove the spongy chips from the tank as appropriate, and a device with a mesh plate was also used to prevent clogging by applying vibrations. Currently, the mesh plate cannot be prevented from clogging, and the mesh plate must be replaced or cleaned frequently.

The present invention was proposed in view of the above-mentioned conventional problems, and aims to reliably eliminate spongy chips floating on the liquid surface and eliminate the conventional problems.

<Means for solving the problem> In order to achieve the above object, the present invention includes a daddy tank in which a daddy coolant liquid containing chips, etc. is stored, and a dirt tank that separates chips, etc. A coolant tank is provided between the dirty tank and the clean tank, and the coolant tank is provided between the dirty tank and the clean tank to keep the liquid level of the dirty tank at a constant level, and the coolant liquid in the dirty tank is kept in the clean tank. A communication path that flows into the tank, a magnetic drum that is installed at one end of the dirty tank and rotates with a portion of the coolant exposed above the surface of the coolant, and a throttle that is constantly pressed against the upper surface of the outer periphery of the magnetic drum. a magnetic separator that discharges chips etc. adsorbed on the magnetic drum to the outside of the tank; a ceiling plate attached above the coolant level in the Daddy tank; a lower surface of the ceiling plate and the Traveling along the coolant liquid level in the Darday tank in the direction of the magnetic separation device,
and a chip scraping device having a plurality of scrapers for scraping chips and the like floating on the coolant liquid surface to the magnetic separation device.

<Operation> The present invention uses a scraper-type chip conveyor device to actively scrape up floating chips on the coolant surface of the Daddy tank, which is maintained at a constant water level, toward the magnetic separation device and transfer them to the outer periphery of the magnetic drum. It reliably adsorbs, defoams, dehydrates, and discharges.

<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4. In FIGS. 1 and 2, 4 is a coolant tank. This coolant tank 4 is composed of a dirty tank 1 and a clean tank 2. The dirty tank 1 and the clean tank 2 are formed by a communication port 29 provided in a partition wall 24b of a magnetic separation device 18, which will be described later, and an inner wall 24c extending upward from the communication port 29 on the clean tank 2 side. It communicates via a level adjustment room 30. Further, a partition plate 26 for level adjustment is attached to the inner wall 24c so that the position can be adjusted in the vertical direction.
By causing the coolant liquid to overflow and flow into the drain tank 1, the liquid level of the dirty coolant liquid in the dirty tank 1 is set to be constant.

The communication port 29 is opened at one end of the Daddy tank 1, and the magnetic separation device 18 is located above the communication port 29.
will be installed. This magnetic separation device 18 consists of a magnetic drum 19 that rotates with a portion exposed from the coolant surface, and a rubber roller (squeezing roller) 20 that is constantly pressed against the upper surface of the magnetic drum 19 and rotates. A scraping plate 21 that contacts the upper surface of the magnetic drum 19 and peels off sludge adsorbed to the outer periphery of the magnetic drum 19, and a chute 22 that throws the peeled sludge into a chip receiving box 23 outside the tank. It is equipped with

The other end of the Darday tank 1 opposite to the position where the magnetic separation device 18 is installed is provided with a discharge port 6 that slopes upward from the bottom of the Darday tank 1 and opens downward. A sludge receiving box 28 is located directly below 6. Reference numeral 27 is a gutter that collects the dirty coolant liquid discharged from the processing machine into the dirty tank 1. Further, in the present invention, a scraper-type chip conveyor device (chip scraping device) 3 (hereinafter abbreviated as conveyor device) is installed in the dirty tank 1. This conveyor device 3 has an endless chain 10 to which scrapers 17 are attached at regular intervals, and a sprocket 7 above the discharge port 6 and a magnetic separation device 18.
A sprocket 9 is provided below the coolant liquid level near the magnetic separator 18, and a sprocket 8 is provided near the bottom of the dirty tank 1 directly below the magnetic separator 18.
The motor 11, pulleys 12, 13, and belt 14 rotate the motor 11, pulleys 12, 13, and belt 14 in a clockwise direction in FIG. The upper chain 10 traveling in the direction of the magnetic separation device 18 is guided by a guide 15a so as to move along the coolant liquid level that is always at a constant level.
Also, the chain 1 traveling in the direction of the discharge port 6
0 is guided by a guide 15b so that the scraper 17 moves along the bottom surface and the rising slope of the dirty tank 1.

Further, in the travel path of the coolant liquid level of the chain 10, a ceiling plate 25 is installed above the coolant liquid level, and the scraper 17 is formed by this ceiling plate 25, the outer wall 24a of the coolant tank 4, and the partition wall 24b. A tunnel has been formed in which you can travel.

Since the present invention has the structure as described above, the dirty coolant liquid discharged from the processing machine is collected into the dirty tank 1 through the gutter 27. In the Daddy tank 1, abrasive grains and chips and other sludge that are relatively easy to settle are separated and settled in the Daddy coolant liquid and deposited in the accumulation section 5. This deposited sludge is transported to a conveyor device 3 that is constantly rotating.
The scraper 17 scrapes the bottom surface of the dirty tank 1 and drops the sludge from the discharge port 6 into the sludge receiving box 28.

On the other hand, the whisker-like chips in the coolant liquid become buoyant due to the adhesion of bubbles, gradually float to the surface, grow entwined with each other on the liquid surface, become spongy chips, and float on the coolant liquid surface. . This floating powder is
A scraper 17 running along the surface of the coolant liquid transports the coolant to a magnetic separation device 18 where it is adsorbed onto a magnetic drum 19, where it is defoamed and dehydrated by a rubber roller 20. Then, the spongy chips adsorbed on the outer periphery of the magnetic drum 19 are peeled off by the scraping plate 21 and sent through the chute 22 to the chip receiving box 23.
It falls and releases.

The dirty coolant liquid in the dirty tank 1 is cleaned by the removing action of the chips mentioned above, and then flows through the communication port 29.
From there, the coolant passes through the level adjustment chamber 30, overflows the partition plate 26, and flows into the clean tank 2, and the coolant liquid level in the dirty tank 1 is always maintained at a constant level. Note that the conveyor device 3 is also installed inside the clean tank 2.
A scraper type conveyor device 31 is provided in conjunction with the clean tank 2 to discharge the sludge settling on the bottom surface of the clean tank 2 to the outside of the tank.

3 and 4 show other embodiments of the present invention, and the embodiment shown in FIG. 3 is a dedicated conveyor device for conveying spongy chips floating on the coolant surface to the magnetic separation device 18. 34a, and a conveyor device 34b exclusively for deposited sludge that discharges the deposited sludge from the discharge port 6. In addition, in the embodiment shown in FIG. 4, a primary clean tank 35 and a secondary clean tank 36 are provided as clean tanks, a cyclone 38 is disposed between the two clean tanks 35 and 36, and a pump 37 is used to clean the primary clean tank 35 and the secondary clean tank 36. Next clean tank 3
5, the clean coolant liquid is sent to the cyclone 38 under high pressure, further purified by the cyclone 38, and sent to the secondary clean tank 36. In addition, 32 in FIG. 2 and 39 in FIG. 4 are pumps that force-feed the clean coolant liquid to the processing machine.

<Effects of the invention> As described above, according to the device of the present invention, a communication port is provided between the dirty tank and the clean tank to maintain the liquid level in the dirty tank at a constant level and to drain the coolant in the dirty tank to the clean tank. At the same time, a ceiling plate is installed above the liquid level of the dirty tank, and a scraper is moved along the lower surface of the ceiling plate and the liquid level in the dirty tank toward a magnetic separation device consisting of a squeezing roller and a magnetic drum. Since the structure is equipped with a chip scraping device that has a chip scraping device, even if the sponge-like floating materials, which increase in number with the mixing of surfactants, are filled in front of the magnetic separation device, they will not overflow to the outside of the tank. It is possible to efficiently adsorb it to a magnetic separation device without any problems.

In other words, because a certain gap is formed between the coolant liquid level and the ceiling plate, even if the spongy floating material grows in thickness, it is held down, suppressing the increase in thickness, and compressing it. It is scraped up by a scraper and efficiently transported to a magnetic separation device. In addition, since the scraper passes through a tunnel section divided by both walls of the tank and the ceiling plate,
The floating objects can be continuously scraped up without being dispersed, and floating chips on the coolant surface can be reliably removed.

[Brief description of the drawings]

Figures 1 and 2 show the device of the present invention; Figure 1 is a cross-sectional view taken along the line of Figure 2, Figure 2 is a cross-sectional view taken along the line of Figure 1, and Figures 3 and 4 are the device of the present invention. FIG. 5 is a sectional view of a conventional device, and FIG. 6 is a plan view thereof. 1... Daddy tank, 2... Clean tank, 3...
Scraper type chip conveyor device, 4...Coolant tank, 10...Chain, 17...Scraper, 18...Magnetic separation device, 19...Magnetic drum, 20...Rubber roller, 25...Ceiling plate, 29... Communication port, 30...Level adjustment room.

Claims (1)

[Scope of utility model registration request] A coolant tank consisting of a dirty tank that stores a dirty coolant liquid containing chips, etc., and a clean tank that stores a clean coolant liquid from which chips and the like have been separated in the dirty tank, and the dirty tank and the clean tank. and a communicating path installed at one end of the dirty tank to keep the liquid level of the dirty tank at a constant level and drain the coolant liquid in the dirty tank to the clean tank, and a communication path installed at one end of the dirty tank to maintain the coolant liquid level It consists of a magnetic drum that rotates with a part exposed, and a squeezing roller that is constantly pressed against the upper surface of the outer circumference of the magnetic drum. A separation device, a ceiling plate attached above the coolant liquid level in the Daddy tank, and a ceiling plate that moves in the direction of the magnetic separation device along the lower surface of the ceiling plate and the coolant liquid level in the Daddy tank, and the coolant A device for removing chips floating on a liquid surface of a coolant tank, comprising: a chip scraping device having a plurality of scrapers for scraping chips and the like floating on the liquid surface toward the magnetic separation device.