JP3009783U - Eddy current coolant cleaning device - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] To provide a compact cleaning device that efficiently cleans and recycles coolant. [Structure] In a space above and below a main cylindrical tank 7, a magnetic separator 5 and a coolant pump 9 are placed on an upper lid 8 of the tank 7, and a dirty tank 1 and an auxiliary tank 4 are attached to a lower part of the tank 7 and a pump attached to them. The pump 2, the filter bag 3, and other parts are compactly housed. Then, first, the dirty coolant liquid is caused to flow into the dirty tank 1, which is pumped into the magnetic separation device 5 by the pump 2, and the treatment liquid is discharged tangentially to the inner wall of the main cylindrical tank 7 to generate a vortex flow, thereby causing residual sludge. Is efficiently sedimented and separated, and this clean liquid is sent to the mother machine, while the accumulated sludge is dehydrated by the filter bag 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In the processing of general machine tool coolant containing sludge of grinding machines and magnetic materials, the treatment of fine sludge, especially the coolant containing abrasive grains, becomes incomplete in conventional magnetic separators. On the other hand, the eddy current type coolant cleaning device of the present invention, unlike the cyclone device, does not apply a high pressure to the dirty coolant liquid and collects and separates the sludge in a state close to nature, so that the coolant liquid is removed. Efficient recycling is now possible.

[0002]

[Prior art]

 As shown in the example in Fig. 3, the conventional cleaning device for fine sludge, especially coolant containing abrasive grains, is processed by a conventional magnetic separation device and then processed by a chip conveyor device (shown) or a paper filter device. It becomes necessary, the space of the whole processing equipment expands, and the cost becomes high. Furthermore, in the case of the paper filter equipment, it is becoming difficult to treat the used paper as industrial waste in terms of environmental hygiene. There are other methods such as the cyclone device and the centrifuge, but they both increase the space and the handling cost and increase the cost.

[0003]

[Problems to be solved by the device]

 In general machine tools, workability is improved more in grinding machines and shaving machines than in plain machines, and fine sludge increases with a large amount of chips, and in particular, those containing abrasive grains are increasing. Therefore, there has been a strong demand for an effective treatment device for the coolant containing these components, that is, a cleaning device that can be recycled without worrying about the reduction of the space and the cost.

[0004]

[Means for Solving the Problems]

 The present invention was made in order to solve the above-mentioned problems, and is made from a coolant containing a sludge of machine tools and other general magnetic materials, or a coolant containing abrasive grains such as a grinding machine. In a purification device that separates and recycles the sludge, the treatment liquid from the magnetic separation device, which is the primary treatment, is discharged tangentially to the inner wall of the main cylindrical tank whose bottom is connected to the inverted cone to generate a vortex flow. The swirl type coolant cleaning device is characterized in that the sludge is taken out from the lower part of the inverted cone.

[0005]

[Work]

 The eddy current coolant cleaning device of the present invention is provided with a dirty tank that receives the coolant liquid discharged from a grinding machine and a general machine tool (hereinafter referred to as a mother machine) containing magnetic sludge. A pumping pump is attached, and a magnetic separator for receiving this pumping dirty coolant liquid is mounted on the upper lid of the main cylinder tank whose lower part is connected to the inverted cone, and a coolant pump for feeding this processing liquid to the mother machine is also this upper lid. Is mounted on. On the other hand, an on-off valve for sludge is provided at the center of the lower part of the inverted conical part connected to the main cylindrical tank, and a filter bag suspended in the auxiliary tank leading to the previous dirty tank is opened immediately below this. When the coolant discharged from the mother machine flows into the dirty tank into the coolant cleaning device having such a structure and the tank reaches a certain amount, the pumping pump operates to remove the dirty coolant from the magnetic separator. Send to. Then, when the treatment liquid by this magnetic separation device is discharged tangentially to the inner wall of the main cylindrical tank to generate a vortex in the main cylindrical tank, the residual sludge in the treatment liquid, that is, a part of fine sludge and Abrasive grains gradually descend in the weak vortex while approaching the inner wall of the main cylindrical tank, continue to descend along the inner wall of the lower inverted cone, and accumulate at the center of the lower part. The sludge opening / closing valve is opened as appropriate in consideration of the accumulated state, the sludge is allowed to flow into the filtration bag directly below, and dehydration is performed by either a forced or natural method.

[0006]

【Example】

 An embodiment of the eddy current type coolant cleaning device of the present invention will be described with reference to FIGS. The dirty tank 1 is provided with an auxiliary tank 4 on which a pumping pump 2 is mounted and a filter bag 3 is hung on its side surface. The auxiliary tank 4 has a small window at the bottom to open near the high level of the dirty tank 1. ing. The magnetic separation device 5 is installed on the upper lid 8 of the main cylindrical tank 7 whose lower part is connected to the inverted cone 6, and the discharge side pipe of the pumping pump 2 is connected to the inflow side of this magnetic separation device 5. A coolant pump 9 is mounted on the upper lid 8, and a suction side pipe of the pump 9 is opened in the main cylindrical tank 7. An on-off valve 10 for sludge is attached to the center of the lower part of the inverted cone 6 connected to the lower part of the main cylindrical tank 7, and the sludge is centered so that it can flow down to the filter bag 3 which is open immediately below. In addition, each of the dirty tank 1 and the main cylindrical tank 7 is provided with a float type level switch 11 and 12 to catch the high level and the low level of the tank, respectively.

To operate the eddy current type coolant cleaning device having such a structure, first, the coolant containing sludge is caused to flow into the dirty tank 1 from the mother machine, and the float type level switch 11 of the tank 1 is set to the high level. When the level is caught, the pumping pump 2 operates to send this dirty coolant liquid to the magnetic separation device 5. This magnetic separation device 5 adsorbs and separates mainly sludge of magnetic material in the dirty coolant liquid, discharges this treatment liquid tangentially near the inner wall of the main cylindrical tank 7, and creates a vortex in the main cylindrical tank 7. generate. Then, a part of the residual fine sludge in the treatment liquid and the abrasive grains gradually descend while approaching the inner wall of the main cylindrical tank 7 and continue further descending along the inner wall of the lower inverted cone 6 and accumulate at the center of the lower portion. . The sludge opening / closing valve 10 is opened at an appropriate time in consideration of the accumulation state, and the sludge is suspended in the auxiliary tank 4 to flow down into the filtration bag 3 opened immediately below the opening / closing valve 10 for dehydration. This dehydration method is not limited to forced or natural ones. If one example of forced dehydration is given (not shown), a filter bag with a part of the lower part exposed is housed in the air bag. A method of squeezing out the contained coolant liquid by pushing the compression air into it, and other methods are generally considered, and appropriate measures can be taken. Further, the residual sludge in the main cylindrical tank 7 descends while gradually approaching the inner wall of the tank 7 as described above when the coolant liquid is in a swirl state in the tank 7, but the magnetic separation device 5 When the discharge from the tank stops and the vortex flows toward the stop, the residual sludge gradually becomes a rotating rod shape that gradually narrows toward the center of the tank 7 according to this stop. Settle at the bottom. Further, the coolant pump 9 is provided with a suction pipe at an appropriate position avoiding the inner wall of the main cylindrical tank 7 and appropriately sends the purified coolant liquid to the mother machine.

[0009]

[Effect of device]

 The simple eddy current coolant cleaning device of the present invention is used for processing dirty coolant liquid for general machine tools that contains sludge of a grinding machine and magnetic material, and it is difficult to separate and collect with a magnetic separation device. Sludge, especially abrasive grains, is separated and collected in a state close to nature without applying high pressure to the dirty coolant liquid like in a cyclone device, and in the upper and lower spaces of the main cylindrical tank 7 that is the main body. The magnetic separator 5 and the coolant pump 9 are placed on the upper part, and the dirty tank 1, the auxiliary tank 4 and the pumping pump 2 attached to them, the filter bag 3 and all other parts are put in a compact part on the lower part. As a result, the layout of the mother machine that uses this device is extremely easy.

[Brief description of drawings]

FIG. 1 is a front view showing an eddy current type coolant cleaning device of the present invention.

FIG. 2 is an explanatory view showing a vortex type coolant liquid cleaning device of the present invention.

FIG. 3 is a perspective view showing a conventional coolant liquid cleaning device.

[Explanation of symbols] 1 ... Dirty tank 11 ... Dirty tank 2 ... Pump pump Float type level switch 3 ... Filtration bag 12 ... Main cylindrical tank float type level switch 4 ... Auxiliary tank 13 ... Overflow pipe 5. Magnetic separator 6 Inverse cone 21 Coolant tank 7 Main cylinder tank 22 Chip conveyor 9 Coolant pump 23 Magnetic separator 10 Sludge on-off valve 24 Coolant pump

Claims (1)

[Scope of utility model registration request] 1. A machine tool and a cleaning device for separating and recycling the sludge from a coolant liquid containing sludge of general magnetic material or a coolant liquid containing abrasive grains such as a grinding machine, A vortex-type coolant liquid in which the treatment liquid from the magnetic separation device, which is the primary treatment, is discharged tangentially to the inner wall of the main cylindrical tank whose bottom is connected to the inverse cone to generate a vortex and the sludge is taken out from the lower part of the inverse cone. Cleaning equipment.