JPS6038652Y2 - Circulation purification device for lubricant liquid or coolant liquid for machine tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a circulating purification device for lubricant liquid or coolant liquid for machine tools.

Conventionally, there is a system in which a tank and a filter are connected through a circuit to a circulation purification device for one of these liquids, and the liquids are forcibly circulated by a pump.

However, the particle size distribution of impurities mixed in these liquids has a wide range, and while fine-sized impurities can be supplied to a filter using a pump and removed by filtration, large-sized impurities cannot be directly circulated using a pump. Since it is not possible to do so, it accumulates at the bottom of the tank, so the tank must be changed frequently.

In addition, other purification equipment is equipped with an upper weir and a lower layer in the tank, allowing fine-grained impurities to circulate in the tank and large-grained impurities to settle out, and the tank is periodically changed and replaced. There are things that remove impurities that have accumulated at the bottom.

However, these lubricant liquids or coolant liquids are expensive, and it is uneconomical to discard them every time the oil is replaced.
Changing the light wastes time and requires a lot of labor, so when the number of changes to the light changes, it becomes inconvenient from the viewpoint of rationalizing production.

The present invention was devised to solve these problems in the conventional technology, and aims to efficiently and reliably purify lubricant liquid or coolant liquid for machine tools and extend their usage time. The purpose of the present invention is to provide a new circulating purification device that reduces the number of times the liquid tank is replaced.

Hereinafter, the present invention will be described with reference to illustrative embodiments.

A tank 1 stores lubricant liquid or coolant liquid for machine tools.

The tank 1 generally has a volume of 100 t' to 500 t', but is not limited to this volume.

A suction pipe 2 connects the bottom of the tank 1 and the sludge bag 3.

The suction pipe 2 is a pipe having a diameter capable of suctioning all the liquid in the tank 1 and impurities mixed therein.

The base end of the suction pipe 2 is connected to the upper space on one side of the sludge bag 3, and the upper space on the other side is connected to an on-off valve V.
1 to one end of a pipe 4 that communicates with the suction blower 9 to form a first circuit.

Further, a filter medium 5 such as a filter cloth or a metal is installed inside the sludge bag 3, and one end of the filtrate discharge vibro constituting a part of the second circuit is connected to the bottom bottom of the filter medium 5. , the other end is connected to the cushion tank 7.

Furthermore, an on-off valve V is provided in the upper space of the cushion tank 7.
2, one end of a pipe 8 which joins the pipe 4 of the first circuit and communicates with the suction blower 9 is connected to form a second circuit.

From below the opening/closing valve V2 of the pipe 8, there is a pipe 1 that is open to the atmosphere.
0 branches, and the pipe 10 is provided with an on-off valve V3.

In addition, a suction pipe 11 is provided at the bottom of the cushion tank 7.
One end of the pipe 11 faces the pump 12, and the other end of the pipe 11 faces the pump 12.
It is connected to the.

The pipe 11 is provided with an on-off valve 4.

A pipe 13 has one end connected to the lower side of the cushion tank 7 and the other end connected to the tank 1, and an on-off valve V5 is interposed in the pipe 13.

Reference numeral 14 denotes a stock solution supply pipe that connects the pump 12 and the filter 15.

16 is a pipe branched from the pipe 14 and connected to the tank 1.

17 is a filtrate pipe connected to communicate the filter 15 and the tank 1.

Reference numeral 18 denotes a pipe for adjusting the water level of the stock solution fed to the filter 15, and 19 is a drain pipe for discharging the stock solution from the filter 15.

■6. V7. ■8. V9 is the pipe 14, 16, 18
．． 19, respectively, are on-off valves interposed therein.

Next, a method of using the apparatus for circulating and refining lubricant liquid or coolant liquid for machine tools constructed as described above will be explained.

When the blower 9 is operated with the on-off valve V1 open and the on-off valve V2 closed, the air in the sludge bag 3 and the suction pipe 2 is exhausted through the blower 9 through the first circuit, and the air in the pipe is exhausted. 2 sucks and stores the lubricant liquid or coolant liquid containing impurities in the tank 1 into the sludge bag 3 which is in a sealed state.

The operating time for this step is about m minutes. Next, with the sludge bag 3 properly grooved, the on-off valve V is closed and the on-off valve V2 is opened.

At this time, on-off valve V3. ■1. ■5 should be closed.

By this operation, the second circuit consisting of the vibro, cushion tank 7, and pipe 8 is opened, and the air present there is sucked and exhausted through the blower 9, and at the same time, the undiluted solution in the sludge bag 3 is transferred to the filter material. 5 is filtered and suctioned as a filtrate from the vibro into the cushion tank 7 and stored there.

The operating time for this step is 10 to 2 inches.

Next, on-off valve V2. Close V5 and open/close valves V3°V4
is opened to drive the pipe 12.

When the opening of the filter medium 5 in the sludge bag 3 is small, the on-off valve V6 is closed, the on-off valve V7 is opened, and the filtrate in the cushion tank 7 is circulated directly to the tank 1 and collected. .

Note that the filtrate may be collected directly into the tank 1 by gravity by opening the on-off valve V without driving the pipe 12.

On the other hand, when the opening of the filter medium 5 in the sludge bag 3 is large, the on-off valve V6 is opened and the on-off valve V7. V8. V9
is closed, the pump 12 is driven, the filtrate in the cushion tank 7 is refiltered by the filter 15, and the filtrate is sent and collected from the pipe 17 to the tank 1 for coolant liquid or the like.

The operating time for this step is approximately 5 minutes.

As described above, according to the purification device of the present invention, all large particle size impurities deposited at the bottom of the lubricant liquid or coolant liquid tank can be fed to the sludge bag and filtered, so that the coolant liquid etc. can be clearly identified. Conventionally, the replacement frequency is 1~
What used to be done every two months now only needs to be done once every 1 to 1.5 years by adopting the device of this invention, and
It is possible to circulate and purify lubricant liquid or coolant liquid easily and in a short time before starting work on various machine tools or after the end of work, and as a result, it is possible to improve the tolerance and center circularity of the finished dimensions of machine tools. This has the effect of significantly preventing mechanical wear on machine tools.

[Brief explanation of the drawing]

The drawing is a schematic illustration of the coolant liquid calculation circulation purification device of the present invention. 1... Tank, 2... Suction pipe, 3
・・・・・・Sludge bag, 4,6.8・・・・・・
Pipe, 5... Filter medium, 7... Cushion tank, 9... Blower 110, 11, 13
, 14, 16, 17, 18, 19...pipe,
12...Pump, 15...Filter, V
0~v9...Open/close valve.

Claims (1)

[Scope of utility model registration request] In a lubricant liquid or coolant liquid circulation purification device consisting of a sludge bag 3 that filters a lubricant liquid or coolant liquid in a tank 1, a cushion tank 7, and a blower 9, an upper space inside the sludge bag 3 is used as a tank. 1, and another upper space in the sludge bag 3 is connected to the blower 9 via an on-off valve V1, and the bottom of the sludge bag 3 is connected to the cushion tank 7, and the cushion tank 7 A circulating purification system for lubricant liquid or coolant liquid for machine tools, characterized in that an upper space in the interior is connected to the floor 9 via an on-off valve v2, and a bottom part of a cushion tank 7 is connected to the tank 1. .