JP5737813B2 - Filtration method - Google Patents

Description

The present invention relates to a filtration method having a liquid removal function.

  Sludge, such as chips, settles in the coolant tank used in machine tools. In order to take this sludge out of the tank, the sludge is scraped off from the bottom of the tank to the outside of the tank over the upper edge of the tank. A conveyor is provided, and sludge is scraped out of the tank by this conveyor (see, for example, Patent Documents 1 and 2).

JP 2007-296467 A JP 2011-010555 A

  The sludge scraped to the outside of the tank by the conveyor is disposed of as industrial waste, but this sludge contains a large amount of coolant liquid, which increases the weight and costs for industrial waste treatment. Since liquid such as coolant liquid contained in the sludge is also taken out from the tank, the amount of consumption of this liquid increases, so that it is necessary to drain the sludge.

This invention is made | formed in view of such a point, and it aims at providing the filtration method which has a liquid removal function.

The present invention is a gas-liquid suction nozzle that can be inserted into a liquid in a tank and sucked in the liquid and pulled out from the liquid and sucked in gas, and sludge is captured from the liquid sucked from the gas-liquid suction nozzle. A gas-liquid permeable filter and a gas-liquid transfer pump capable of sucking the liquid passing through the filter and circulating it to the tank and simultaneously sucking the gas sucked from the gas-liquid suction nozzle through the filter can be provided. A filtration method using a filtration device, by inserting the tip of the gas-liquid suction nozzle deeply into the tank, sucking sludge that has settled at the bottom of the tank, and moving the tip of the gas-liquid suction nozzle on the liquid level. The gas sucked from the gas-liquid suction nozzle by sucking the sludge floating on the liquid surface by the gas-liquid transfer pump and pulling out the tip of the gas-liquid suction nozzle from the liquid By sucking the body through a filter, a filtration method of deliquoring processes the captured sludge filter.

According to the present invention, the liquid contained in the sludge separated and recovered by the gas-liquid permeable filter from the liquid in the tank by the suction force of the gas-liquid transfer pump is extracted from the liquid in the tank. Since liquid removal processing is performed by a gas-liquid transfer pump that sucks only gas from the liquid suction nozzle through a filter, only the light weight sludge solid content can be discarded efficiently. As a result, industrial waste treatment costs can be reduced, the work environment can be improved, and the liquid contained in the sludge can be recovered from the sludge into the tank, saving liquid consumption and the frequency of liquid replacement. Can also be reduced. Further, the gas-liquid transmission filter and gas-liquid adoption of the transfer pump and the gas-liquid suction nozzle, the sludge floated in the tank liquid level to sludge precipitated in the tank bottom, Ru can be efficiently clean suction.

It is a circuit diagram which shows one Embodiment of the filtration method which concerns on this invention, (a) shows a filtration process, (b) shows a liquid removal process. It is a perspective view of the filtration apparatus used for the filtration method same as the above.

  Hereinafter, the present invention will be described in detail based on the embodiment shown in FIGS.

  As shown in FIG. 2, the filtration device 11 includes a gas-liquid permeable filter 12, a gas-liquid transfer pump 13, and a pipe connecting them, which are installed in a carriage 14 so as to be movable as an integrated unit. Turn into.

  A gas / liquid suction nozzle 16 is connected to the gas / liquid permeable filter 12 via a flexible pipe 15 such as a hose.

  As shown in FIG. 1 (a), the gas-liquid suction nozzle 16 is used by an operator in a liquid L containing sludge S in a tank T that collects coolant liquid (cooling liquid, lubricating oil) of a machine tool. While inserting the gas-liquid suction nozzle 16 and sucking the liquid L while searching for the location of the sludge S, an operator pulls out the gas-liquid suction nozzle 16 from the liquid L as shown in FIG. Air) A manually operated pipe that can suck in G.

  The gas-liquid permeable filter 12 also serves as a sludge container that captures and stores the sludge S from the liquid L sucked from the gas-liquid suction nozzle 16. The filter case lid 22 is attached to the filter case main body 21 so that the filter case cover 22 can be opened and closed, and can be kept airtight.

  A gas / liquid suction port 24 is provided on the upper side surface of the filter case main body 21, and the gas / liquid suction nozzle 16 is connected to the gas / liquid suction port 24 via the flexible pipe 15. A gas-liquid discharge port 25 is provided at the bottom of the filter case body 21. As shown in FIG. 2, the filter case lid 22 is sealed by a plurality of fastening fittings 26 attached to the upper opening edge of the filter case main body 21. By releasing these fastening fittings 26, the filter case lid 22 is sealed. It can be easily removed.

  As shown in FIG. 2, the gas-liquid transfer pump 13 includes an electric motor 13m installed on a carriage 14 as a pump drive source, and a pump suction port 27 is connected to a gas-liquid permeable filter 12 via a pipe 28. A flexible pipe 30 such as a hose inserted into the tank T is connected to the pump discharge port 29.

  As the gas-liquid transfer pump 13, gas and liquid can be sucked separately and gas-liquid simultaneous suction is possible. As shown in FIG. 1A, the liquid L in the tank T is sucked into the gas-liquid. By sucking the gas through the gas-liquid permeable filter 12 from the nozzle 16 and circulating it to the tank T, and sucking the gas G sucked from the gas-liquid suction nozzle 16 through the filter 12 as shown in FIG. A gas-liquid vacuum pump having a function of draining the sludge S captured by the filter 12 is used.

  The carriage 14 is attached to a base member 14b that can be moved in an arbitrary direction by a free wheel 14a, a filter installation member 14d is attached to the base member 14b via a support frame 14c, and a handle 14e is attached to the member 14d. A storage box 14f for storing flexible pipes 15 and 30 such as hoses is attached, and an operation panel 14g such as a power source is attached to a support frame 14c.

  Next, the function and effect of the illustrated embodiment will be described.

  As shown in FIG. 1A, in the filtration step, the gas-liquid suction nozzle 16 is inserted into the liquid L such as the coolant liquid in the tank T, and the tank is driven by the gas-liquid transfer pump 13 driven by the electric motor 13m. The liquid L containing the sludge in T is pumped up.

  At that time, by inserting the tip of the gas-liquid suction nozzle 16 deeply into the tank T, the sludge settled at the bottom of the tank is sucked, and the tip of the gas-liquid suction nozzle 16 is moved on the liquid level. The sludge floating on the liquid surface is also sucked by the gas-liquid transfer pump 13 capable of simultaneous liquid suction.

  Since the sludge S sucked by the gas-liquid transfer pump 13 is filtered by the bag filter element 23 of the filter 12, the liquid after the sludge removal returns to the tank T through the gas-liquid transfer pump 13. The liquid L in T is gradually purified.

  When the accumulated amount of sludge S accumulated in the bag filter element 23 of the filter 12 reaches a predetermined state, the process proceeds to the liquid removal step shown in FIG. 1B based on the timing or a signal detected by a sensor (not shown). .

  This liquid removal step is started only by an operation of pulling out the gas-liquid suction nozzle 16 from the liquid L in the tank T. By this nozzle drawing operation, air is sucked from the gas-liquid suction nozzle 16 and the suction of the liquid L is stopped.

  At the same time, when the air sucked from the gas-liquid suction nozzle 16 passes through the bag filter element 23 of the filter 12, the liquid content in the sludge S accumulated in the bag filter element 23 is peeled off from the solid content. The gas-liquid transfer pump 13 functioning as a vacuum pump for simultaneously sucking the gas-liquid is sucked and returned from the gas-liquid transfer pump 13 into the tank T.

  As a result, the sludge S accumulated in the gas-liquid permeable filter 12 is subjected to a liquid removal process by a kind of vacuum liquid removal method to be in a solid state.

  When collecting the sludge solids thus drained, remove the filter case lid 22 and take out the bag filter element 23 from the filter case body 21 and take out the sludge solids from the bag filter element 23 and discard it. dispose.

  As described above, the liquid contained in the sludge S separated and collected by the gas-liquid permeable filter 12 by the suction force of the gas-liquid transfer pump 13 from the liquid L in the tank T is converted into the liquid L in the tank T. Since the liquid removal pump 13 that draws only the gas from the gas-liquid suction nozzle 16 pulled out from the inside through the filter 12 performs the liquid removal treatment, only the light weight sludge solid content can be discarded efficiently.

  For this reason, industrial waste treatment costs can be reduced and the working environment can be improved. In addition, the liquid contained in the sludge S can be recovered from the sludge S into the tank T, so the consumption of the liquid L can be saved. The replacement frequency of the liquid L can also be reduced.

  In addition, by adopting gas-liquid permeable filter 12, gas-liquid transfer pump 13 and gas-liquid suction nozzle 16, from the sludge floating on the tank liquid level to the sludge settled on the bottom of the tank can be sucked efficiently and cleanly, The structure of the filtration device 11 can be simplified, and an inexpensive filtration device can be provided.

  Furthermore, when the sludge S is discarded, the bag filter element 23 can be taken out from the container-like filter case body 21 and the solid sludge S can be easily discharged from the bag filter element 23. Easy.

  In addition, since the gas-liquid permeable filter 12 and the gas-liquid transfer pump 13 are integrated into the carriage 14 and made movable, it is compact and portable, so it can be moved close to any tank. It can be used for the filtration treatment of the liquid in the tank, so that it has high versatility and high workability.

  The present invention has applicability to business operators involved in the manufacture, sale or use of filtration devices.

T tank L liquid G gas S sludge
11 Filtration equipment
12 Gas-liquid filter
13 Gas-liquid transfer pump
14 trolleys
16 Gas-liquid suction nozzle
21 Filter case body
23 Bug filter element

Claims (1)

A gas-liquid suction nozzle that can be inserted into the liquid in the tank to suck in the liquid and be drawn out of the liquid to suck in the gas;
A gas-liquid permeable filter that captures sludge from the liquid sucked from the gas-liquid suction nozzle;
A filtration method using a filtration device equipped with a gas-liquid transfer pump capable of sucking the liquid passed through the filter and circulating it through the tank and sucking the gas sucked from the gas-liquid suction nozzle through the filter and capable of simultaneous gas-liquid suction. ,
By inserting the tip of the gas-liquid suction nozzle deeply into the tank, the sludge that has settled at the bottom of the tank is sucked.
By moving the tip of the gas-liquid suction nozzle on the liquid level, the gas-liquid transfer pump sucks the sludge that has floated on the liquid level,
A filtration method, wherein the tip of the gas-liquid suction nozzle is pulled out of the liquid and only the gas sucked from the gas-liquid suction nozzle is sucked through the filter, so that the sludge captured by the filter is dehydrated .

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