JP2003191147A - Portable coolant tank cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable coolant tank cleaning device capable of efficient ly capturing and cleaning a sludge deposited in a coolant tank in a short time. <P>SOLUTION: The portable coolant tank cleaning device is provided with a coolant pump 13 for suctioning a coolant containing a fine sludge or the like and a deposited sludge from the coolant tank 11, a magnetic separator 14 for carrying out a primary treatment of a magnetic substance sludge, a screen filter 15 for carrying out a primary treatment of a non-magnetic substance sludge, an elliptical coolant tank 16 for storing the coolant completed the primary treatment, a coolant pump 17 for generating a swirl 34 in the coolant, filter devices 18, 19 for carrying out a secondary treatment of the fine sludge or the like, a filter back-washing piping route 20 for regenerating the filter element at the time of blinding of the filter element, and a control device 49 for controlling an action of respective instruments on a conveyable truck 21. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for separating sludge from a coolant containing sludge discharged from at least one industrial machine or the like (hereinafter also referred to as a processing mother machine). In order to clean the coolant, the coolant cleaning device generally attached to each processing mother machine is mixed in the coolant in the coolant tank constituting the coolant cleaning device, and precipitates and deposits in the coolant tank. Portable coolant tank cleaning to remove fine sludge etc. in the coolant that could not be separated by a processing device such as a magnetic separator generally provided in the coolant cleaning device from the coolant tank that constitutes the coolant cleaning device Equipment related. 2. Description of the Related Art In the industry, in order to improve the recyclability, when processing coolant containing sludge and the like discharged from at least one processing mother machine,
There is a demand for a coolant cleaning device that does not accumulate sludge or the like at the bottom of a coolant tank that constitutes a coolant cleaning device attached to each processing machine. Therefore, as a method of removing sludge, there is a method of attaching a filter device, a cyclone device, a centrifugal separator, or a microfiltration device combining these. However, in this case, since the investment cost is high and the running cost is also high, it is currently not mounted on a general processing mother machine. Therefore, a method of attaching a magnetic separator, which collects and separates the treatment of the coolant containing the sludge and the like flowing out of the processing mother machine by using a magnet, has been widely used. However, in recent years, the processing conditions of the processing mother machine have been diverse,
For example, even in a magnetic separator that processes magnetic sludge, the collection and separation accuracy of the magnetic separator may vary significantly depending on various conditions such as the material of the magnetic sludge and the presence or absence of heat treatment of the sludge. When bad conditions with low collection / separation accuracy are met, there has been a problem that a large amount of sludge that cannot be collected by the magnetic separator accumulates in the coolant tank. Therefore, sludge that has accumulated in the coolant tank is periodically scraped out manually to clean the coolant tank. [0003] Claim 1 according to the present invention.
Is to solve the above problem, even if the working mother machine is in operation, to collect the sludge accumulated in the coolant tank constituting the coolant cleaning device attached to each working mother machine efficiently in a short time It is an object of the present invention to provide a portable coolant tank cleaning device employing a novel system that can be cleaned and can be easily moved. [0004] A portable coolant tank cleaning device according to claim 1 is a treatment device for treating sludge contained in coolant discharged from at least one industrial machine or the like. From the coolant tank of each coolant cleaning device equipped with the above, the coolant in the coolant tank containing the fine sludge and the like which could not be separated by the processing device provided in the coolant cleaning device, or the coolant was precipitated and accumulated in the coolant tank. A coolant pump equipped with a suction hose for sucking sludge, and a magnetic separator for performing primary treatment of magnetic sludge in sludge contained in the coolant in the coolant tank, which is sucked by the coolant pump,
A filter for mainly performing the primary treatment of non-magnetic sludge in the sludge, and a long cylindrical shape for storing coolant in the sludge after the primary treatment of the magnetic sludge and the non-magnetic sludge has been completed. In order to generate a vortex in the circular coolant tank and the coolant stored in the oblong coolant tank, a coolant pump for sucking the coolant in the oblong coolant tank from the bottom of the bottom of the oblong coolant tank and a coolant pump A filter device for performing a secondary treatment of the sucked coolant in the oval coolant tank and a filter backwash for regenerating the filter element when the filter element provided in the filter device is clogged by sludge. A piping route and a control device for controlling the operation of each device It is characterized in that it comprises on the readily soluble 搬台 vehicles for transporting. [0005] A portable coolant tank cleaning apparatus according to the present embodiment, as described above, processes a coolant containing sludge and the like flowing out from at least one processing mother machine. The sludge settled and accumulated in each coolant tank constituting each coolant cleaning device attached to each processing mother machine can be efficiently collected and cleaned in a short time, and can be easily moved. There is a need for a portable coolant tank cleaning device that is capable of cleaning. Hereinafter, typical embodiments of the present invention will be described with reference to the drawings. However, the dimensions, shapes, materials, relative positions and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to them unless otherwise specified. , Are merely illustrative examples. FIGS. 1 and 2 show a portable coolant tank cleaning apparatus according to the present embodiment for treating sludge deposited and accumulated in a coolant tank constituting each coolant cleaning apparatus, which is attached to at least one processing mother machine. , And FIG. A portable coolant tank cleaning device according to the present embodiment for treating sludge deposited and accumulated in a coolant tank constituting each coolant cleaning device, which is attached to at least one processing mother machine, includes: A coolant pump 13 having a suction hose 12 for sucking sludge deposited and accumulated in a coolant tank 11 constituting a cleaning device together with a coolant, and a magnetic separation for performing a primary treatment of a coolant containing magnetic sludge. Filter 14 for performing primary treatment of a coolant mainly containing non-magnetic sludge
5, an oblong coolant tank 16, a coolant pump 17 for sucking sludge in the oblong coolant tank 16 together with the coolant, and a coolant pump 17
The filter device 18 or the filter device 19 for performing the secondary treatment of the coolant sucked by the above, the filter backwash pipe path 20 for regenerating the clogging of the filter device 18 or the filter device 19, and the respective devices are controlled. Control unit 49 and a portable carriage 21 for transporting them as a set. [0007] Coolant containing sludge flowing out of at least one processing mother machine is processed by each coolant cleaning device attached to each processing mother machine, and stored in a coolant tank 11 constituting each coolant cleaning device. . In the coolant tank 11, sludge contained in the coolant that could not be processed by each coolant cleaning device precipitates and accumulates. The portable coolant tank cleaning device is a device for treating and cleaning sludge in the coolant that has settled and accumulated in each coolant tank 11 as described above. Note that all the devices described below are provided on the portable trolley 21 and can be easily moved together with the portable trolley 21. The sludge contained in the coolant deposited and deposited in the coolant tank 11 constituting the coolant purifying device can be reduced without being able to treat all the sludge in the coolant by the respective coolant purifying devices attached to the respective working mother machines. Suction hose 1 by coolant pump 13
2, is sucked together with the coolant in the coolant tank 11 and is fed into the magnetic separator 14 by pressure. In the magnetic separator 14, the sludge of the magnetic substance contained in the coolant is processed. The start and stop of the coolant pump 13 are performed by detecting the upper and lower limits of the liquid level of the oval coolant tank 16 by the float switch 22, and the float switch 22 detects the lower limit of the liquid level to start the coolant pump 13. Then, the coolant pump 13 is stopped by detecting the liquid level upper limit. The magnetic separator 14 rotates a rotating cylinder 23 having a fixed magnet built in a non-magnetic rotating cylinder by an electric motor 24, and rotates the rotating cylinder 23 and a semi-cylindrical bottom plate 25.
The processing is performed by passing a coolant containing magnetic sludge through the flow path 26 having a predetermined gap therebetween, and adsorbing and separating the magnetic sludge in the coolant on the outer periphery of the rotary cylinder 23. The treated coolant that has flowed out of the magnetic separator 14 flows into a wire mesh filter 15 for mainly performing primary treatment of non-magnetic sludge. The magnetic sludge adsorbed on the outer periphery of the rotating cylinder 23 is dewatered by being pressed by the squeezing roller 27, scraped off by the scraping plate 28, and discharged into the receiving box 29. The coolant, which has been subjected to the primary treatment of the magnetic sludge in the coolant flowing out of the magnetic separator 14, flows into the wire mesh filter 15.
The non-magnetic sludge is treated in the inside, and the coolant after the treatment flows into the oblong coolant tank 16 from inside the wire mesh filter 15 via the pipe 30 along the inner wall of the oblong coolant tank 16. Is done. In addition, the aperture of the wire mesh filter 15 is 100 μm to 150 μm in consideration of the abrasive particle diameter of a grinding stone which falls off by grinding.
Is desirable, but it is needless to say that the present invention is not limited to this numerical value and can be changed according to the intended use. A coolant outlet 32 is provided at the center of the bottom surface 31 of the oval coolant tank 16, and the coolant pump 17 and the coolant outlet 32 are connected by a gutter 33. The coolant in the center of the bottom surface 31 of the pump 16 is pumped up. The coolant in the oblong coolant tank 16 is generated by the coolant pump 17 pumping the coolant in the center of the bottom 31 of the oblong coolant tank 16. The coolant in the oblong coolant tank 16 extends from the center of the bottom 31 of the oblong coolant tank 16. The bottom surface 31 of the elliptical coolant tank 16 is drawn by the suction force sucked outside.
In the northern hemisphere, a left-handed swirl 34 is generated from the coolant outlet 32 at the center to the upper surface of the liquid in the oval coolant tank 16 (Coriolis force).
The fine swarf or the abrasive grains in the coolant that could not be collected by the wire mesh filter 15 or the left-handed vortex 3 in the oval coolant tank 16
4, the sediment is gradually connected while rotating with the coolant, and is accumulated at the center of the bottom surface 31 of the oval coolant tank 16. Fine chips or abrasive particles in the coolant accumulated at the center of the bottom surface 31 of the oval coolant tank 16 are discharged from a coolant outlet 32 provided at the center of the bottom surface 31 of the oval coolant tank 16. With the coolant pump 17 connected by the outlet 32 and the gutter 33, the valve 35 is closed and the valve 36 is opened, and the three-way electromagnetic valve 40 passes through the pipe 37 together with the coolant in the oval coolant tank 16. The pressure is sent to the filter device 18 or the filter device 19. At this time, a coolant pump for sucking the coolant together with the sludge settled and accumulated in the coolant tank 11 from each coolant tank 11 constituting each coolant cleaning device attached to at least one processing mother machine. In the case where a loss time or the like occurs, such as when the pump 13 is stopped, the coolant pump 13 is stopped during that time, and the valve 36 and the valve 3 are stopped.
By closing the valve 8 and opening the valve 35, the coolant in the oval coolant tank 16 sucked by the coolant pump 17 from the coolant outlet 32 of the oval coolant tank 16 is returned to the magnetic separator 14 or the wire mesh filter 15 again. The coolant in the oval coolant tank 16 can be reprocessed by circulating the coolant. The filter device 18 or the filter device 19
The coolant sucked by the coolant pump 17 from the inside of the oval coolant tank 16 filtered by
Through the three-way electromagnetic valve 39, the coolant flows into the coolant tank 11 constituting the coolant cleaning device attached to the processing mother machine. For filtering the coolant sucked from the oval coolant tank 16 by the coolant pump 17,
Either the filter device 18 or the filter device 19 is used, and the three-way solenoid valve 40 provided on the inflow side of the coolant to the filter device is such that the filter device side used is “open” and the opposite side is “open”. Is
'Closed'. Filter device 18 or filter device 1
The coolant that has been filtered by the filter 9 is discharged through the three-way solenoid valve 39 to the coolant tank 11 that constitutes the coolant cleaning device attached to the processing mother machine as described above. The direction of the valve 39 is “open” on the filter device side used and “closed” on the opposite side, similarly to the three-way solenoid valve 40 provided on the coolant inflow side of the filter device. The aperture of the filter element incorporated in each of the filter devices 18 and 19 is desirably 20 to 30 μm, which is also the same as the aperture of the wire mesh filter 15 described above.
It is needless to say that the present invention is not limited to this numerical value, but can be changed according to the intended use. Further, by providing two sets of the filter device 18, the filter device 19 and the filter device, when the filter element built in either one of the filter devices is clogged, at the time of the filter element backwash described below, Even at the time of replacement, the portable coolant tank cleaning device can be operated without stopping. Each of the filter devices 18 and 19 is provided with a filter backwash pipe line 20. The operation of the filter device will be described, for example, in the process of clogging the filter element of the filter device 18. The filter device 18 of the three-way solenoid valve 40
The side becomes “open”, the coolant in the oval coolant tank 16 sucked by the coolant pump 17 is filtered by the filter device 18 via the three-way solenoid valve 40, and the filtered coolant is provided on the filter device 18 side. The valve is returned to the coolant tank 11 via the three-way electromagnetic valve 39 when the valve is opened. The filter element incorporated in the filter device 18 is clogged by sludge in the coolant, and the pressure in the pipe 41 rises.
8, the filter backwash pipe path 20 operates at the time when 0.2 MPa is detected. Due to the clogging of the filter element built in the filter device 18, the pressure switch 48 is set to 0.
While detecting 2 MPa, the filter device 18 side of the three-way solenoid valve 40 switches from “open” to “closed”, and the filter device 19 side switches from “closed” to “open”.
Similarly, in the three-way solenoid valve 39, the filter device 18 switches from “open” to “closed”, and the filter device 19 switches from “closed” to “open”. This allows
Oval coolant tank 1 by coolant pump 17
The filter for filtering the coolant sucked from 6 is switched from the filter device 18 to the filter device 19, and the pressure in the pipe 41 becomes 0.2 MPa or less. At the same time as the filter is switched from the filter device 18 to the filter device 19, the filter device 18 side of the backwashing three-way solenoid valve 42 is opened.
The filter device 19 is switched to “closed”. In the above state, the two-way electromagnetic valve 4
By keeping the 'closed' of 3 and opening the two-way electromagnetic valve 44, air having a pressure of 0.3 to 0.5 MPa is desirably injected into the accumulator 47 storing the coolant, The coolant in the accumulator 47 pressurized by the pressure of the air is injected into the filter device 18 via the three-way solenoid valve 42, and is preferably repeatedly injected and stopped several times every one second, so that the filter device 18
The backwashing of the filter element provided therein is performed.
When the filter element is backwashed, the three-way solenoid valve 45 for drain is set to "open" on the filter device 18 side and "closed" on the filter device 19 side. The sludge discharged together with the coolant from the filter device 18 due to the back washing of the filter element provided in the filter device 18 is discharged to the drain pipe 4.
6 flows into the oval coolant tank 16 via the three-way solenoid valve 45 and is reprocessed. After the backwash is completed, the two-way solenoid valve 43 is opened for 2 to 5 seconds,
The coolant is stored in the accumulator 47 in preparation for the next backwash. Due to the clogging of the filter device 18, the pressure in the pipe 41 rises to 0.2 MPa, and the pressure switch 4
8 detects this, and as described above, the filter device 1
8 has been switched to the filter device 19,
The pressure in the pressure switch 4
If the filter 8 is activated again, the filter element incorporated in the filter device 19 may be defective, and the device is completely stopped. In this case, it is necessary to clean or replace the filter element built in the filter device 19, and restart after the processing. The operation of each device in the filter backwash pipe line 20 at the time of backwashing in the filter device 18 has been described above. By performing each operation reverse to the operation of each electromagnetic valve described above, Filter device 19
Needless to say, backwashing can be performed. In addition, the device of the present invention is not limited to the embodiment described above and shown in the drawings as described above, and can be appropriately changed without departing from the gist. According to the portable coolant tank cleaning apparatus according to the first aspect, each of the coolant cleaning apparatuses attached to each processing mother machine even though at least one processing mother machine is in operation. The sludge deposited and accumulated in each of the coolant tanks can be efficiently processed in a short time and can be easily moved. The tank can be cleaned continuously and efficiently. In addition, among a plurality of coolant cleaning devices, the processing conditions are poor, and the sludge in the coolant that has flowed out of the processing mother machine is likely to settle and accumulate in a coolant tank constituting the coolant cleaning device. By mainly cleaning the tank with the portable coolant tank cleaning device of the present invention, a specific coolant cleaning device does not need to be equipped with a special treatment device because sludge is easily accumulated in the coolant tank. For example, as with other coolant cleaning devices, a coolant cleaning device including only a general magnetic separator can be used, thereby reducing investment costs and running costs. In addition, the portable coolant tank cleaning device of the present invention is provided with an oblong vortex coolant tank or a backwash pipe route for regenerating a clogged filter element, so that maintenance-free operation is possible. is there. In addition, the effect of preventing deterioration of the coolant can be considered. For coolants such as industrial machines that are used repeatedly, maintaining the cleanliness and extending the service life can maintain the performance of the industrial machines and reduce the overall operating cost. It can also contribute to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a portable coolant tank cleaning device of the present invention. FIG. 2 is a plan view of the portable coolant tank cleaning device of the present invention. FIG. 3 is an explanatory diagram showing a coolant circuit of the portable coolant tank cleaning device of the present invention. [Description of Signs] 11 ... Coolant Tank 12 ... Suction Hose 13 ... Coolant Pump 14 ... Magnetic Separator 15 ... Wire Mesh Filter 16 ... Oval Coolant Tank 17 ... Coolant Pump Reference numeral 18: Filter device 19: Filter device 20: Filter backwash pipe path 21: Portable truck 22: Flow switch 23: Rotating cylinder 24: Electric motor 25: Bottom plate 26 ... flow path 27 ... squeeze roller 28 ... scraping plate 29 ... receiving box 30 ... piping 31 ... bottom surface 32 ... coolant outlet 33 ... gutter 34 ... Vortex 35 ... Valve 36 ... Valve 37 ... Piping 38 ... Valve 39. . . Three-way solenoid valve 40 ・ ・ ・ Three-way solenoid valve 41 ・ ・ ・ Pipe 42 ・ ・ ・ Three-way solenoid valve for backwashing 43 ・ ・ ・ Two-way solenoid valve 44 ・ ・ ・ Two-way solenoid valve 45 ・ ・ ・ Drain Three-way solenoid valve 46 Drain pipe 47 Accumulator 48 Pressure switch 49 Control device

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B01D 29/66 B01D 37/04 35/02 B03C 1/00 A 36/02 1/02 C 36/04 B01D 29/04 520B 37/04 530A B03C 1/00 29/38 510A 1/02 530A 29/36 D 35/02 Z (72) Inventor Hiromichi Ueda 1 Toyota Town, Toyota City, Kariya City, Aichi Prefecture TOYOTA MOTOR CORPORATION F term (reference) 3C011 BB31 4D064 AA40 4D066 AA01 AA05 AB06 EA03 EA06 FA02

Claims (1)

Claims: 1. A coolant cleaning device attached to each industrial machine, comprising a processing device for treating sludge contained in a coolant discharged from at least one industrial machine or the like. From the coolant tank that constitutes the device, the coolant in the coolant tank containing fine sludge or the like that could not be separated by the processing device provided in the coolant cleaning device, or the precipitate deposited and deposited in the coolant tank. A coolant pump provided with a suction hose for sucking sludge; and a magnet for performing a primary treatment of magnetic sludge in the sludge contained in the coolant in the coolant tank, which is sucked by the coolant pump. A separator, and a primary non-magnetic sludge in the sludge. A filter for performing the treatment, an elliptical coolant tank having a long cylindrical shape for storing coolant in which the primary treatment of the magnetic sludge and the non-magnetic sludge in the sludge is completed, and an inside of the oblong coolant tank A coolant pump for sucking the coolant in the oblong coolant tank from a lower portion of the bottom of the oblong coolant tank to generate a vortex in the coolant stored in the coolant pump; A filter device for performing a secondary treatment of the coolant in the oval coolant tank; and a filter backwash for regenerating the filter element when the filter element provided in the filter device is clogged by the sludge. To control the operation of each equipment A control device, easily portable coolant tank cleaning apparatus characterized by comprising on variable 搬台 vehicles for transporting.