JP2004249382A - Apparatus for collecting coolant and sludge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for collecting coolant and sludge, in which respective devices are efficiently arranged without stopping centralized coolant. <P>SOLUTION: The apparatus for collecting coolant and sludge comprises: a plurality of dividing devices 4, 5, 6 which divide the apparatus into a machining line 1, a dirty tank 2, sludge, and coolant; distributing devices 4a, 5a, 6a which are attached to the dividing devices and distribute the sludge 14 to sludge boxes 4b, 5b, 6b and a conveying device 20; an agitating and distributing device 40 which once stores the sludge supplied from the conveying device and then distributes the sludge again; a plurality of press devices 51 which compress the sludge supplied from the agitating and distributing device and further solidify the sludge while discharging small amount of coolant; and a collecting device 54 for collecting the solidified sludge 15. When any trouble occurs in the supply of the sludge, the supply of the sludge from the preceding process is stopped, and the sludge is finally stored in the sludge boxes. The dividing devices have a tank 64, and fins 9 are arranged on the surface 64a of the tank. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coolant and sludge collection device that collects machining sludge generated in a plurality of grinding or polishing processing lines together with a coolant, separates the coolant and the sludge, uses the coolant again, solidifies and collects the sludge, and collects the same. . In addition, the present invention relates to a transfer device for transferring sludge suitable for such a device, and a stirring and distributing device for temporarily storing sludge and distributing the sludge to the next step.
[0002]
[Prior art]
Conventionally, processing sludge (grinding and polishing debris) generated in grinding and polishing is removed from the processing position by a coolant (oil or water) supplied to the processing position. In addition, the coolant simultaneously absorbs heat during grinding and polishing, and improves processing performance. The processing sludge and the coolant are collected together, separated into a coolant and a sludge by a separation device such as a settling tank or a filtration device, and the coolant from which the sludge has been removed is supplied to the processing line again. However, sludge contains coolant and cannot be reused as it is and is discarded. Therefore, the sludge containing the coolant is put into the centrifuge, and the coolant is recovered while reducing the content of the coolant. Further, the coolant is discharged by a press device and solidified into disc-shaped briquettes (pancakes), etc., to reduce the coolant content. ing. (For example, see Patent Document 1). However, this is not automated between the steps. Therefore, a grinding line, a filtration device, and a press device are connected by a transfer line or the like, and automation is performed (for example, see Patent Document 2). In addition, a belt conveyor or a screw conveyor is used as a conveying device for sludge or the like. Further, a stirring device is provided so that sludge can be smoothly supplied to a press device or the like (see Patent Documents 1, 2, and 3).
[0003]
[Prior art documents]
[Patent Document 1]
Japanese Utility Model Application Laid-Open No. 61-879 [Patent Document 2]
JP 2001-300977 A [Patent Document 3]
JP-A-8-155779
[Problems to be solved by the invention]
However, in a mass production line having a plurality of grinding devices and polishing devices using a large amount of centralized coolant device, the throughput of the coolant and the throughput of the processing sludge are enormous. On the other hand, it is not permissible to shut down the production line or the coolant system. Furthermore, shutting down the coolant system by stopping the coolant and sludge collection device that separates, compresses, and solidifies sludge separated and discharged from the coolant is to stop the line and is not allowed. Patent Document 1 does not suggest or disclose such a point.
[0005]
Therefore, if a plurality of lines are provided side by side or a facility with a large processing capacity is used, the cost increases, a larger facility is required, and there is much waste. Patent Document 2 also discloses that a separate processing line is provided for each type of coolant and steel type, but does not suggest or disclose such a shutdown of the coolant system. The stirring device disclosed in Patent Document 1 further separates sludge and dirt mixed from the outside, and the devices disclosed in Patent Documents 2 and 3 are intended to easily supply sludge to a press device. In paragraph [0028] of Patent Document 3, there is described an example in which a plurality is provided, but no special consideration is given to stopping the coolant system. In addition, a large amount of heat has been recovered in the coolant containing sludge, and the coolant is cooled and returned.On the other hand, it is better that the temperature of the sludge is lower from the environmental point of view, but there is no suggestion or disclosure about this point .
[0006]
In view of the above-described problems and the like, the object of the present invention is to use a centralized coolant, even in a mass production line having a large number of grinding or polishing lines, without stopping the centralized coolant and the grinding or polishing line, It is an object of the present invention to provide a coolant and sludge collecting device in which each device is arranged. Another object of the present invention is to reduce the heat of the coolant to reduce the influence on the environment. Another object of the present invention is to provide a transfer device and a stirring device suitable for the coolant and sludge recovery device.
[0007]
[Means for Solving the Problems]
In the present invention, a grinding or polishing processing line composed of a plurality of grinding machines or polishing machines, a clean tank that distributes coolant to the processing line, and a coolant that includes processing sludge discharged from the processing line. A separation device that separates the processing sludge and the coolant and discharges a sludge containing a small amount of coolant, and a separation device that is configured to return the coolant from which the processing sludge has been removed to the clean tank, and is attached to the separation device and the discharged A distributing device for selectively distributing the sludge to any one of the two, a sludge box for storing one of the sludges distributed by the distributing device, and conveying the other sludge distributed by the distributing device to the next step And a transfer device for collecting the coolant and the sludge. It has solved the serial problems.
[0008]
That is, a distribution device for selectively distributing sludge discharged to a separation device such as a filtration device or a sedimentation device for separating a coolant and a sludge discharged from a processing line for polishing or grinding into one of two ways. When the supply of sludge to the subsequent process becomes difficult, the sludge can be directly discharged out of the system and stored in a sludge box. Therefore, even if a problem occurs in the post-process, the sludge can be continuously discharged without stopping the separation device. The sludge discharged into the sludge box is conventionally processed manually and then separately discarded or solidified by a centrifuge or a press. The other sludge sent to the subsequent process by the distribution device is sent to the next processing step by the transport device.
[0009]
Coolant collected from the processing line carries heat together with sludge. This heat also remains in the sludge, generating a large amount of steam of the contained coolant. This steam not only adheres to each device and is bad for the environment, but also causes malfunction of each sensor due to the adhesion and malfunction of an optical sensor such as a photoelectric switch due to the steam itself. Further, it is preferable to lower the temperature of the coolant resupplied to the processing line. Therefore, in the invention described in claim 2, the separating device has a tank portion, and fins are formed on the surface of the tank portion to lower the temperatures of the coolant and the sludge.
[0010]
Although there may be only one separator, failure of the separator also affects the central coolant. In addition, the amount of discharged coolant increases or decreases depending on the operation status of the processing line. Therefore, in the invention according to claim 3, a plurality of the separating devices provided with the distributing device are installed, and the coolant once collects together with processing sludge such as grinding dust or polishing waste generated in the processing line. The sludge discharged from the plurality of separation devices is collectively conveyed to the plurality of separation devices via a dirty tank.
[0011]
That is, since a separation device such as a filtration device or a sedimentation device for separating a coolant and a sludge discharged from a polishing or grinding processing line does not always require a maximum processing capacity, the discharged coolant is temporarily transferred to a dirty tank. The coolant was further separated into a plurality of separation devices, and the coolant separated from the separation devices was returned to the clean tank according to the processing amount. In addition, sludge from each separation device is once transported together by the transport device, so sludge supplied from each transport line can be handled collectively without selecting or sorting in the process of the next process. Sludge is easy to handle.
[0012]
Sludge containing a small amount of coolant is generally sent to a press machine for briquetting. A single press machine is insufficient due to failures and flexibility in processing capacity. Therefore, it is sufficient to arrange two or more press machines. However, a simple increase in the number of lines is not preferable in terms of location and cost. Therefore, in the invention according to claim 4, a stirring and distributing device that temporarily stores sludge containing a small amount of coolant and is capable of distributing and discharging the sludge from a plurality of outlets, and a plurality of outlets of the stirring and distributing device A plurality of pressing devices that solidify the sludge while compressing the sludge discharged from the discharge port and discharging a small amount of coolant, respectively, and the solidified pressed by the pressing device. And a collecting device for collecting the coolant and sludge.
[0013]
That is, by disposing the stirring and distributing device before the plurality of pressing devices, the required amount is distributed to each pressing device while being combined into the stirring and distributing device once and stirring. Therefore, it is much easier to adjust the sludge supply amount and the throughput of the press device than simply providing a plurality of press devices. For example, if the supply amount of sludge is small, it may be operated by one press, and if the amount of sludge is large, two presses may be operated. When the amount of sludge exceeds the processing capacity of the press, the supply from the stirring and distributing device may be stopped. The stirring and dispensing device temporarily stores the sludge, stirs the sludge by stirring to prevent stagnation of the sludge, and distributes the sludge from a plurality of outlets. The solidified sludge (briquette or pancake) is recovered by the recovery device. The recovered briquettes are recycled at steelworks.
[0014]
It is preferable to arrange the distribution device and the stirring distribution device described above as a system. Therefore, in the invention according to claim 5, the sludge conveyed from the conveyance device according to claim 1, 2, or 3 is a sludge containing the trace amount of coolant according to claim 4, and a coolant and sludge recovery device. And
[0015]
That is, the sludge discharged from the separation device is once collected by the transfer device into a stirring and distributing device, and the required amount is distributed to each press device while stirring. Therefore, it is much easier to adjust the amount of coolant and sludge discharged from the press device than to arrange a plurality of separation devices, transfer devices, press devices, etc. on one line. It also saves energy compared to large capacity ones. As described above, if the amount of sludge discharged from the separation device is small, it is sufficient to operate with one press, and if the amount of sludge is large, two or three units (if equipped) are used. Run the press. In particular, when there are a plurality of separation devices, the effect is great.When the amount of sludge exceeds the processing capacity of the press, the sludge of some or all of the plurality of separation devices is sludge by the distribution device. Discharge into the box. In addition, even when the most important pressing device is stopped, the sludge is appropriately distributed, and even when each device is stopped, the sludge is sequentially discharged to the sludge box and the separating device is not stopped, as described above. In addition, one or a plurality of transfer devices and recovery devices may be used, but from the viewpoint of cost, maintenance, and the probability of failure, it is preferable that one or two press devices be used. In addition, the number of distributions or the number of the stirring and distributing devices is appropriately arranged according to the number of press devices.
[0016]
In the present invention, it is an object of the present invention to prevent a processing line and a separation device such as a grinding machine from being stopped due to an abnormality of a transfer device, a stirring and distributing device, a press device, or the like in a subsequent process. Therefore, in the invention according to claim 6, when a problem occurs in the supply of sludge to one of the press devices, the stirring and dispensing device supplies the supply of the sludge containing the trace amount of coolant from the discharge port on the stop side. Stop, when there is a problem in the supply of sludge to the stirring and dispensing device, stop the transfer device, further, when there is a problem in the supply of sludge to the transfer device, the distributing device, the sludge one of the sludge A coolant and sludge recovery device for distributing to the side and storing the sludge in the sludge box.
[0017]
When the press unit, the agitating / distributing unit, and the transfer unit stop due to a failure, or a large amount of sludge is supplied to exceed the processing amount, and there is a problem with the supply of sludge, the previous process sequentially supplies the sludge. Stop and finally discharge the sludge to the sludge box, and press (solidify) the sludge as much as possible while not stopping the concentrated coolant. Furthermore, a hopper for temporary storage of sludge is provided between each device to provide a buffer between the devices, so that sludge can be retained in the subsequent process as much as possible to reduce the effect on the central coolant. Good.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall system diagram of a coolant and sludge collecting device showing an embodiment of the present invention, FIG. 2 is a sectional explanatory view of a distributing device attached to a separating device, and FIG. 3 is a surface portion of a tank portion of the separating device. 3D, FIG. 4 is a partial cross-sectional side view of the conveying device, FIG. 5 is a partial cross-sectional front view of the stirring and dispensing device, FIG. 6 is the same partial cross-sectional top view, FIG. 7 is the same partial cross-sectional side view, and FIG. It is a three-dimensional view of a tip part. In FIG. 1, a clean tank 2 for supplying a coolant (grinding fluid) 12 to a grinding line by using a pump or the like is provided alongside a grinding line 1 composed of a plurality of grinding machines 11, and a grinding / grinding line. A dirty tank 3 is provided in which coolant 13 containing returning sludge (grinding waste) 13a is collected. Three separation devices 4, 5, and 6 to which a coolant 13 containing sludge is supplied from a dirty tank 3 by a pump are provided. The separation device is a filtration tank of a magnet separator type. The coolant 13 is separated into sludge 14 and coolant 12 by passing the coolant 13 through the magnet tank. The coolant 12 separated from the sludge is returned to the clean tank 2. In addition to the above-mentioned separation devices, various types such as a sedimentation type magnet separator filtration tank and a filtration type using a filter can be used.
[0019]
As shown in FIG. 2, the separation devices 4, 5, and 6 scrape the sludge 14 separated on the bottom plate 62 provided on the magnet separator 61 and lift the sludge 14 above the tank 64 by the conveyor 63. Above the tank 64, a tank discharge section 65 is provided, so that the scraped sludge 14 falls downward. Distributing devices 4a, 5a, and 6a are provided below the discharge unit 65, and sludge is selectively supplied to the sludge boxes 4b, 5b, and 6b provided side by side, and to the screw conveyor 7 and the transport device 20 respectively. Is to be distributed. The sludge boxes 4b, 5b, and 6b are generally box-shaped containers having an open top and capable of storing sludge and being movable by a forklift or the like. The distribution device is of a damper type and switches the slant direction of the switching plate 67 by a pneumatic cylinder 66 to switch the sludge discharge destination. The screw conveyor or the conveying device has a substantially U-shaped cross section with an open top, and the sludge 14 is a screw conveyor 7 or a conveying device 20 (in the present embodiment, a screw conveyor is used) as shown by a solid line A in FIG. ) Is inserted through upper openings 8, 28 of the U-shaped cross section. In addition, the sludge 14 is thrown into the sludge boxes 4b, 5b, 6b as shown by the dotted line B in FIG. The switching plate 67 is fixed at a position indicated by a solid line by supplying air to the pneumatic cylinder 66. When air is removed from the pneumatic cylinder, the switching plate 67 is set to a dotted line position by the spring force of a spring 68, so that an emergency stop or air supply is performed. Even if stops, it is on the safe side (dotted line side). Further, as shown in FIG. 3, a large number of fins 9 formed by welding one side of a plate-like iron plate are formed on the surface 64a of the tank portion 64 of the separation devices 4, 5, 6 to lower the temperature of the coolant and to reduce the temperature of the sludge. Reduce the generation of steam.
[0020]
As shown in FIG. 1, a screw conveyor 7 is horizontally installed below a discharge section 65 of the separation devices 4 and 5, and sludge of the separation devices 4 and 5 is charged and discharged from an outlet 7a of the screw conveyor. Further, the sludge 14 is put into the transfer device 20 disposed below the exit of the screw conveyor 7. As shown in FIG. 4, the transfer device 20 includes a long casing 21, a screw 22 disposed in a longitudinal direction on a bottom side 21 a in the casing, and a drive provided at one end of the casing to drive the screw. A screw conveyor comprising a portion 23 and a cylindrical opening 24 provided at the other end of the casing is used. The casing 21 is provided with a substantially U-shaped cross-section 25 in which the upper surface is opened by an opening 28 and into which a conveyed object can be inserted, and a drain port 26 provided on the lower surface of the casing at one end of the casing. . The drive unit 23 is a motor with a speed reducer, and the output shaft is connected to the screw shaft 22a. Although the opening cross-sectional area of the cylindrical opening 24 may be constant, it is preferable that the opening is gradually enlarged and the cross-sectional axis is inclined to the upper surface. The transport device 20 including such a screw conveyor is disposed obliquely upward so that the cylindrical opening 24 faces upward with the liquid discharge port 26 facing downward. The installation angle θ of the transfer device 20 is about 20 to 40 °. In the installed state, the cross-section axis is inclined upward so as to have an angle α larger by 5 to 20 ° than θ described above, and sludge is discharged from the cylindrical opening as shown by an arrow 20a.
[0021]
A coolant receiver 32 is placed below the drain port to store the coolant 14 ′ oozing out of the sludge 14, and the stored coolant is returned to the separation device 6 by a pump or the like. When the transfer device 20 is stopped due to an abnormality, a sludge supply stop signal is generated, and the distributing devices 4a, 5a, and 6a discharge the sludge to the sludge box side by this signal. Also, when not all the sludge is discharged to the sludge box, but only the screw conveyor 7 stops due to an abnormality, the distribution devices 4a and 5a discharge the sludge to the sludge box, and the distribution device 6a transfers the sludge to the transport device 20. They are distributed as they are.
[0022]
As shown in FIG. 1, a belt conveyor 31 is provided below the cylindrical opening 24 of the transport device 20, and further, a stirring and distributing device 40 is provided at the end of the belt conveyor with its upper portion 41 opened, and the transport device 20 is provided. Is discharged into the stirring and dispensing device. The belt conveyor 31 is appropriately disposed for adjusting the height between devices, the horizontal position, and the like. As shown in FIGS. 5, 6, and 7, the stirring and dispensing device 40 removes sludge from a box-shaped upper portion 41 and a lower portion 42 having a substantially semi-cylindrical inner wall surface 42b arranged in parallel with the arc side 42a facing downward. It can be stored. The storage amount is set to be the largest after the screw conveyor 7 and the transfer device 20 so that temporary storage is possible. Openings 43a are opened at the bottom of the lower part 42, and screw conveyors are respectively attached so as to be openings on the sludge input side of the screw conveyor 43, respectively. Reference numeral 43m denotes an electric motor with a speed reducer for driving the screw. The sludge 14 stored at the bottom is discharged from a discharge port 47 on a discharge side 43b of the screw conveyor 43.
[0023]
Two sets of agitating blades 44 are provided, the ends of which are rotatable about a substantially semi-cylindrical inner wall surface around a center axis 42d of the substantially semi-cylinder. An electric motor 45 with a speed reducer is connected to the shaft 42d of the stirring blade, and is capable of rotating and stopping left and right independently. As shown in FIG. 8, the stirring blade 44 has a narrow width, and a plurality of rod-shaped blades having a plurality of holes 44a are radially mounted. More specifically, the stirring blade 44 is formed in a box-like shape extending from the flat plate 44b in the longitudinal direction without a bottom, and the flat plate rib 44c is welded inside to form a hole 44a. Adjacent blades are arranged so that there is no gap, so that sludge lump does not remain between the blades. In addition, the rotating surface becomes the thickness of the flat plate, and the sludge is efficiently stirred with a small resistance. In addition, although the stirring blade was made to be a straight line, various forms are possible, such as inclining the tip in the rotation direction. The blades 44 prevent adhesion between sludges, adhesion to upper and lower inner walls, and occurrence of a bridging phenomenon. Sludge falls smoothly from the bottom opening 43a and is discharged by the screw conveyor 43 without any delay. Further, the current value of the electric motor 45 with a speed reducer that drives the stirring blades can be detected, and when this current value becomes larger than a predetermined current, a sludge supply stop signal to the stirring distribution device 40 is issued.
[0024]
Between the discharge port 47 of the screw conveyor 43 and the opening 43a, there is provided a cylindrical section having a circular cross section and a substantially U-shaped cross section 43c having an open upper surface. The height from the screw shaft of the substantially U-shaped cross section to the upper surface 43d is 1.5 times or more the outer diameter of the screw, a lid 46 is provided on the upper surface, and the portion other than the outlet 47 and the opening 43a is sealed. . As shown in FIG. 1, a hopper 48 is provided below the outlet 47 of the screw conveyor 43, and sludge is supplied to the press device 51 from the outlet 49 of the hopper. When the press device stops or the hopper 48 becomes full and a problem occurs in the supply of sludge to the press device, a sludge supply stop signal is issued, and the screw conveyor 43 is stopped. I have.
[0025]
At the discharge port 49 of the hopper, two press devices 51 are provided, one for each. The press device 51 compresses the sludge 14 discharged from the discharge port 49 of the hopper 48 by a press, and solidifies the sludge into a pancake or briquette while discharging a small amount of coolant. This press device itself may be any of various conventional press devices described in Patent Documents 1 and 2 described above, and is not directly related to the present invention, and therefore description thereof is omitted. The briquettes 15 solidified by the press device 51 are discharged to a collection conveyor 52 disposed between the press devices 51, and a flexible container pack 53 is placed at the end of the collection conveyor. A counter is provided at the end of the collection conveyor to count the number of briquettes. When the number reaches a predetermined number, the collection conveyor is stopped and an expiration buzzer is issued. The collection conveyor 54 and the flexible container pack 53 constitute a collection device 54. The coolant that has oozed out between the devices and between the devices is stored in a coolant 15 ′ receiver 33, and the stored coolant 15 ′ is returned to the separation device 6 by a pump or the like.
[0026]
According to such a configuration, the coolant 13 containing sludge from the grinding line 1 via the dirty tank 3 is separated into the coolant 12 and the sludge 14 containing coolant by the respective separating devices 4, 5, and 6. In normal operation, each distributor discharges sludge 14 to the respective screw conveyor 7 and transporter 20. The sludge discharged to the screw conveyor 7 is discharged to a transport device. The contained coolant 14 ′ oozes out of the sludge in the transfer device 20 and is discharged to the drainage port 26. Since the screw conveyer 20 feeds the sludge upward while intermittently operating, coolant that seeps out is efficiently discharged from the drain port 26. The sludge 14 is discharged while the coolant is extruded while being lightly compressed by the cylindrical opening 24 inclined upward.
[0027]
The coolant discharged from the transport device (screw conveyor) 20 is temporarily stored while being stirred by the stirring blades 44 in the stirring and distributing device 40, and is further divided into two portions at the lower portion while promoting the exudation of the coolant. When the stirring blades 44 are turned from the lower side to the center side, they are almost bisected. When the rotation of one stirring blade is reversed, sludge is preferentially supplied to the reversed one. Since the sludge full signal is detected from the current value of the electric motor, it is not affected by steam generated from the sludge. The sludge is discharged from the bottoms of the lower portions 42, 42 to the hopper 48 from the discharge port 47 of the screw conveyor 43 by the screw conveyor 43 from the opening 43a. In the screw conveyor 43, in addition to sludge, coolant exuded from the stirring section is added and a relatively large amount of coolant is collected. However, since the lid 46 is provided on the upper surface 43d of the substantially U-shaped cross-section 43c, inspection and the like are performed. Therefore, the coolant does not leak even if the lid is opened.
[0028]
Further, an appropriate amount of sludge is supplied from a discharge port 49 of a hopper 48 to a press device 51, and is sequentially solidified (briquetted). The solidified briquettes 15 are collected by a collection conveyor 52, and charged into a flexible container pack 53. You. The sludge briquettes are transported to steel mills by flexible containers and recycled. The exuded coolants 14 ', 15' are respectively stored in coolant receivers 32, 33, etc., and returned to the separation device 6 by a pump or the like. In addition, when a problem occurs in the sludge supply in the subsequent process such as generating a sludge (sludge) supply stop signal appropriately between the devices and the devices, the supply of the sludge from the previous process is stopped so that the final Specifically, the sludge 14 from the separation device is discharged to the sludge boxes 4b, 5b, 6b, so that the supply of the coolant 12 to the processing line 1 can be prevented from being stopped.
[0029]
【The invention's effect】
In the present invention, since the sludge discharged from the separation device can be distributed to the transfer device side and the sludge box side, in response to a trouble in a subsequent process after the transfer device, sludge can be finally discharged to the sludge box, The present invention provides an efficient coolant and sludge collection device that is easy to operate and easy to maintain without stopping a centralized coolant and a grinding or polishing line even in a mass production line. 1).
[0030]
In addition, since fins are formed on the surface of the centralized coolant storage tank to reduce the temperature of the coolant and sludge, steam generation is reduced, malfunctions are reduced, the effect on the environment is reduced, and the temperature of the coolant is easily adjusted. (Claim 2). Since a plurality of separating devices provided with distributing devices are installed, and the sludge to be discharged is collectively transported by the transport device, even if some of the separating devices are broken, they are transported to a subsequent process, for example, The pressing operation in the post-process is continued, and the concentrated coolant is not stopped at the same time (claim 3).
[0031]
Furthermore, the sludge discharged from the separation device and the like is once collected by the transfer device into a stirring and distributing device, and the required amount is distributed to a plurality of press devices while stirring, making it very easy to adjust the throughput of the press device. As a result, it is possible to cope with a failure of the press, and it is possible to continuously solidify (briquette) the sludge discharged from the preceding process (claim 4).
[0032]
Furthermore, since the first to third aspects are further combined with the fourth aspect, the sludge discharged from the separation device can be distributed to the press device side and the sludge box side, and the sludge discharged to the press device side can be transferred to the conveying device. By once distributing the required amount to each press device while stirring, it is very easy to adjust the throughput, the system is energy saving, and finally the sludge can be discharged to the sludge box. Therefore, even in a mass production line, efficient coolant and sludge that are easy to operate and maintain without stopping the centralized coolant and grinding or polishing line, and that can continuously solidify sludge. (Claim 5).
[0033]
In addition, when the press device, the stirring and dispensing device, the transfer device, and the collection hopper stop, etc., and a problem occurs in the sludge supply in the subsequent process, the preceding process sequentially stops the supply of the sludge, and finally, Since the sludge is discharged to the sludge box and the sludge is treated as much as possible, and finally the central coolant is not stopped, a stable long-time operation is possible (claim 6). ).
[Brief description of the drawings]
FIG. 1 is an overall system diagram of a coolant and sludge recovery apparatus showing an embodiment of the present invention.
FIG. 2 is an explanatory cross-sectional view of a distributing device provided alongside the separating device according to the embodiment of the present invention.
FIG. 3 is a partial three-dimensional view of a surface of a tank unit of the separation device according to the embodiment of the present invention.
FIG. 4 is a partial cross-sectional side view of the transfer device according to the embodiment of the present invention.
FIG. 5 is a partial cross-sectional front view of the stirring and distributing apparatus according to the embodiment of the present invention.
FIG. 6 is a partial cross-sectional top view of the stirring and distributing apparatus according to the embodiment of the present invention.
FIG. 7 is a partial cross-sectional side view of the stirring and distributing apparatus according to the embodiment of the present invention.
FIG. 8 is a three-dimensional view of a tip portion of the stirring blade according to the embodiment of the present invention.
[Explanation of symbols]
Reference Signs List 1 processing line 2 clean tank 3 dirty tank 4, 5, 6 separation device 4a, 5a, 6a distribution device 4b, 5b, 6b sludge box 9 fin 11 grinding machine or polishing machine 12 coolant (coolant from which processing sludge has been removed)
13 (including processing sludge) Coolant 13a Processing sludge 14 (including trace amount of coolant) Sludge 15 Solidified sludge 20 Transporting device 40 Stirring and dispensing device 51 Press device 54 Recovery device 64 Tank 64a Tank surface

Claims (6)

A grinding or polishing processing line composed of a plurality of grinding machines or polishing machines, a clean tank for distributing a coolant to the processing line, and a processing sludge and a coolant including a cooling sludge discharged from the processing line. The sludge containing a small amount of coolant is discharged to separate the separation sludge, and the separated sludge is returned to the clean tank with the coolant from which the processing sludge has been removed. A distributing device for distributing one of the two, a sludge box for storing one of the sludge distributed by the distributing device, and the other sludge distributed by the distributing device are transported to the next step. A coolant and sludge recovery device, comprising: a transport device. The coolant and sludge recovery device according to claim 1, wherein the separation device has a tank portion, and fins are formed on a surface of the tank portion. A plurality of the separating devices provided with the distributing device are installed, and the coolant together with the processing sludge such as grinding waste or polishing waste generated in the processing line passes through a dirty tank that once collects, the plurality of separating devices. The coolant and sludge collecting device according to claim 1 or 2, wherein the sludge discharged from the plurality of separating devices is collectively conveyed by the conveying device. Temporarily store sludge containing a small amount of coolant, and a stirring and distributing device capable of distributing and discharging the sludge from a plurality of outlets, and disposed at each of the plurality of outlets of the stirring and distributing device, and discharged from the outlet. A plurality of pressing devices for solidifying the sludge while compressing the sludge and discharging a small amount of coolant, and a collecting device for collecting the solidified sludge pressed by the pressing device. Coolant and sludge recovery device characterized by the following. The sludge conveyed from the conveyance device according to claim 1, 2, or 3 is the sludge containing the trace amount of coolant according to claim 4, wherein the sludge is collected. When a problem occurs in the supply of sludge to one of the press devices, the stirring and dispensing device stops supplying the sludge containing the trace amount of coolant from the discharge port on the stop side, and there is a problem in supplying the sludge to the stirring and distributing device. When the problem occurs, when the problem occurs in the supply of sludge to the conveying device, the distributing device distributes the sludge to one side and stores the sludge in the sludge box. The coolant and sludge recovery device according to claim 5, wherein the coolant and the sludge are collected.

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