Industrial liquid cleaning device

Abstract

Provided is an industrial liquid cleaning device capable of using an industrial liquid for a long period of time by removing bacteria contained in the industrial liquid and crystallizing a component that deposits as scale. An industrial liquid cleaning device (100) is provided. The present invention is provided with: a pump (30) that sucks and discharges an industrial liquid from a container containing the industrial liquid; a flow path (40) through which the industrial liquid suctioned from the container flows; a filtration unit (50) that filters the industrial liquid; and a magnetic field formation unit (60) that forms a magnetic field through which the industrial liquid flowing through the flow path (40) passes. The suction port and the discharge port of the flow path (40) both open to the inside of the container.

Description

Technical Field

[0001] The present invention relates to an industrial liquid cleaning device. More specifically, the present invention is an industrial liquid cleaning device for cleaning and reusing industrial liquids represented by cutting fluids, coolant liquids, and mold release agents generated during product processing. Background Art

[0002] There is a known cleaning device for reusing coolant liquid, which is a type of industrial liquid. As an example of such a cleaning device, there is a structure disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2014-61575).

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2014-61575 (Claims 1 to 6, Paragraphs 0019 to 0030 of the specification, Figures 1 to 5 etc.) Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] In the coolant filtration and cleaning device disclosed in Patent Document 1, for removing foreign matters, an exciting device that can apply a magnetic force to the foreign matters and capture them is used. By using such an exciting device, foreign matters formed of magnetic materials can be reliably removed, but it has also been clarified that there are the following problems: the coolant liquid may be spoiled due to bacteria contained in the coolant liquid, and scale may deposit in the piping.

[0008] Solutions to the Problems

[0009] Therefore, in order to solve the above problems, the present invention has the following objectives. That is, an object of the present invention is to provide an industrial liquid cleaning device that removes bacteria contained in industrial liquids such as cutting fluids and coolant liquids and crystallizes components that deposit as scale, enabling long-term use of the industrial liquid.

[0010] To solve the above problems, the inventors conducted in-depth research and as a result proposed the following structure. That is, the industrial liquid cleaning device of the present invention is characterized in that it includes: a pump that sucks and discharges the industrial liquid from a container containing the industrial liquid; a flow path that allows the industrial liquid sucked from the container to flow; a filtration unit that filters the industrial liquid; and a magnetic field forming unit that forms a magnetic field through which the industrial liquid flowing in the flow path passes, and both the suction port and the discharge port of the flow path open to the inside of the container.

[0011] Thus, by passing an industrial liquid through a magnetic field (magnetic force field), a potential change is generated in the same way as electrolysis, and oxygen in the industrial liquid is converted into active oxygen. The active oxygen generated from the industrial liquid decomposes and removes bacteria contained in the industrial liquid, and deposits components that are the root cause of scale. Therefore, spoilage of the industrial liquid caused by the presence of bacteria and attachment of scale to the inside of the piping are prevented, and the industrial liquid can be used for a long time.

[0012] In addition, preferably, the filtration unit is disposed in a bypass path formed in the flow path, and at least one of the flow location and the flow rate of the industrial liquid can be adjusted by adjustment valves disposed in the flow path and the bypass path.

[0013] Thus, the filtration unit can be replaced without temporarily stopping the industrial liquid cleaning device. In addition, by adjusting the flow rate of the industrial liquid supplied to the filtration unit, the life of the filtration unit can be extended.

[0014] In addition, preferably, the industrial liquid cleaning device further includes: a housing that houses the pump and the magnetic field forming unit and is provided with the filtration unit and the flow path; and a holding body that suspends and holds the housing inside the container.

[0015] Thus, the industrial liquid cleaning device can be directly installed in a container of the industrial liquid, and there is no need to secure a dedicated installation position for the industrial liquid cleaning device.

[0016] In addition, preferably, the housing is mounted on the holding body in such a manner that the height position of the suction port of the pump can be changed.

[0017] Thus, the position of the suction port of the pump can be appropriately adjusted according to the storage amount of the industrial liquid in the container.

[0018] In addition, preferably, a pair of magnet groups are respectively disposed at multiple locations along the flow direction of the industrial liquid, and the pair of magnet groups form the magnetic field in a direction orthogonal to the flow direction of the industrial liquid. Furthermore, more preferably, the orientations of the magnetic fields formed by the respective magnet groups are different in the flow direction of the industrial liquid.

[0019] Based on the above, magnetic treatment of the industrial liquid can be effectively performed.

[0020] Effects of the Invention

[0021] According to the structure of the present invention, by passing industrial liquid through a magnetic field (magnetic force field), a potential change is generated in the same way as electrolysis, and oxygen in the industrial liquid is converted into active oxygen. The active oxygen generated from the industrial liquid decomposes and removes bacteria contained in the industrial liquid, and deposits components that are the root cause of scale. Therefore, it is possible to prevent the industrial liquid from spoiling due to the presence of bacteria and the attachment of scale to the inside of the pipe, and the industrial liquid can be used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front view of an industrial liquid cleaning device according to the first embodiment.

[0023] Figure 2 is showing from Figure 1 the state of the front cover removed from the industrial liquid cleaning device.

[0024] Figure 3 is an enlarged view showing the internal structure of the housing of the industrial liquid cleaning device according to the first embodiment.

[0025] Figure 4 is a front view and a cross-sectional view showing the schematic structure of the magnetic field forming unit according to the first embodiment.

[0026] Figure 5 is a schematic structural diagram of an industrial liquid cleaning device according to the second embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Hereinafter, an embodiment of a cutting fluid cleaning device 100 as an industrial liquid cleaning device of the present invention will be described with reference to the drawings. In addition, the industrial liquid in this specification refers to a concept including cutting fluid, coolant, release agent solution, etc. generated in machining, molding, etc. during product manufacturing.

[0028] (First Embodiment)

[0029] As Figures 1 to 3 shown, the cutting fluid cleaning device 100 of the present embodiment includes a holder 10, a housing 20, a pump 30, a flow path 40, a filter unit 50, and a magnetic field forming unit 60. The holder 10 has a holding frame 11 formed in a rectangular frame shape for holding the housing 20 and a locking portion 12 formed at the upper end portion of the holding frame 11. The locking portion 12 is rotatably mounted relative to the holding frame 11 within a predetermined angle range with the upper end edge as a rotation axis. The holder 10 is detachably mounted to the container by engaging the locking portion 12 with the opening edge of an unillustrated container containing cutting fluid.

[0030] The housing 20 has a receiving body 21 with an opening on the front side and a cover body 22 detachably mounted on the front opening of the receiving body 21. The receiving body 21 is slidably mounted on the inner part of the frame of the holding frame 11 and can change the mounting height position in the longitudinal direction (height direction) of the holding frame 11. An opening 23 is formed on the bottom surface of the receiving body 21, and a filter part 50 is mounted so as to cover the opening 23. A guide line 24 indicating the height position of the suction port of the pump 30 accommodated in the receiving body 21 is displayed on the outer surface of the cover body 22. The cutting fluid cleaning device 100 of the present embodiment adjusts the mounting height position of the receiving body 21 relative to the holding frame 11 and the liquid level height position of the cutting fluid so that the liquid level height position of the cutting fluid accommodated in the container is above the height position of the guide line 24.

[0031] After the pump 30 sucks the cutting fluid accommodated in the container, it sprays the cutting fluid into the flow path 40 connected to the discharge port of the pump 30. The suction port of the pump 30 may be arranged (fixed) at a position above the upper surface of the filter part 50 in the receiving body 21, or may be in a state where the suction port of the pump 30 is in direct contact with the upper surface of the filter part 50. In this way, the cutting fluid accommodated in the container is sucked from the suction port of the pump 30 after passing through the filter part 50, so that chips and the like are not sucked into the pump 30.

[0032] The cutting fluid sprayed from the pump 30 flows in the flow path 40 and is supplied to a magnetic field forming part 60 arranged in the path of the flow path 40. The magnetic field forming part 60 of the present embodiment is detachably mounted on the receiving body 21 of the housing 20 by a support member 70. In addition, as Figures 2 to 4 shown, the magnetic field forming part 60 is provided with two magnets 62 (equivalent to a pair of magnet groups) on the outer peripheral surface of the cylindrical container 61 such that the N pole and the S pole face each other in the diameter direction of the cylindrical container 61 to form a magnetic field in a direction orthogonal to the flow direction of the cutting fluid (the extending direction of the flow path 40). In addition, the magnets 62 are arranged such that the orientation of the magnetic field is different along the flow direction of the cutting fluid in the flow path 40. In the present embodiment, the magnets 62 are arranged at a plurality of positions (here, 4 positions) at a required interval along the flow direction of the cutting fluid, and the orientation of the magnetic fields adjacent to each other in the flow direction of the cutting fluid differ by 90 degrees each. By adopting such an arrangement of the magnets 62, it is advantageous in the following aspects: the orientation of the magnetic field through which the cutting fluid passes is different, and magnetic force treatment can be effectively performed.

[0033] By passing the cutting fluid containing water through the magnetic field (magnetic force field) formed in the magnetic field forming section 60 in this way, an electric field (electric power field) is generated in the magnetic field forming section 60. The electric power generated by the electric field electrolyzes the cutting fluid, and the oxygen dissolved in the cutting fluid is converted into active oxygen. By electrolyzing the cutting fluid, the scale-forming components contained in the cutting fluid are crystallized, and the deposition of scale on the piping is suppressed. In addition, by generating active oxygen in the cutting fluid, the bacteria in the cutting fluid are decomposed, and the spoilage of the cutting fluid can be prevented. The flow path 40 of the present embodiment is also connected to the outlet of the magnetic field forming section 60, and the spray outlet (outlet) of the flow path 40 opens into the inside of the container. Therefore, the cutting fluid stored in the container is repeatedly subjected to the electrolysis treatment and the active oxygen generation treatment performed by the magnetic field forming section 60.

[0034] When the handler of the cutting fluid determines by visual observation or the like that the cutting fluid stored in the container has been sufficiently cleaned, the cutting fluid cleaning device 100 is removed from the container and installed in another container, and the same cleaning treatment can be performed. For the cutting fluid cleaning device 100 installed in the container, after confirming that the height position of the guide line 24 displayed on the lid 22 of the housing 20 is below the liquid level height of the cutting fluid, the power supply can be applied. If the height position of the guide line 24 is not below the liquid level height of the cutting fluid, the handler of the cutting fluid changes the installation position of the housing 20 to the holding frame 11 to adjust the height position of the guide line 24. By repeating the above steps, the cutting fluid stored in a plurality of containers can be sequentially cleaned.

[0035] (Second Embodiment)

[0036] Figure 5 It is a schematic structural diagram of the cutting fluid cleaning device 100 of the present embodiment. The cutting fluid cleaning device 100 of the present embodiment is used in a manner of being provided outside the container containing the cutting fluid. For the cutting fluid cleaning device 100 of the present embodiment, a suction port (not shown) serving as the upstream end of the flow path 40 opens into the inside of a container (not shown), and an intermediate portion of the flow path 40 is led out to the outside of the container. A bypass path 41 for branching the flow path is formed on the flow path 40 led out to the outside of the container. A filter section 50 and a magnetic field forming section 60 are arranged on the bypass path 41. The filter section 50 and the magnetic field forming section 60 of the present embodiment are integrally formed, but the filter section 50 and the magnetic field forming section 60 may be arranged separately. First adjustment valves 42 are respectively arranged at the upstream position and the downstream position of the filter section 50 and the magnetic field forming section 60 on the bypass path 41. In addition, a second adjustment valve 43 is arranged between the branch portion of the bypass path 41 of the flow path 40 and the confluence portion of the bypass path 41.

[0037] The ejection port, which is the downstream end of the circulation path 40, opens into the interior of the container having the suction port. Similar to the first embodiment, the cutting fluid stored in the container is circulated. However, it is also possible that the suction port and the ejection port of the circulation path 40 are not provided in the same container, but are respectively provided in the container before or after the cleaning process performed by the cutting fluid cleaning device 100. In addition, a cascade container method can also be adopted: two or more containers are used, and after each container is relayed by the cutting fluid cleaning device 100, the cutting fluid after the cleaning process is returned to the original container. In the case of adopting the cascade container method, it is also possible to increase or decrease the mesh size of the filter unit 50 of the cutting fluid cleaning device 100 arranged on the downstream side with respect to the mesh size of the filter unit 50 of the cutting fluid cleaning device 100 arranged on the upstream side. According to the method of gradually decreasing the mesh size of the filter unit 50 of the cutting fluid cleaning device 100 arranged on the downstream side, it is advantageous in the following aspects: a finer cleaning process of the cutting fluid can be performed.

[0038] In addition, for the cutting fluid cleaning device 100 according to the present embodiment, if the first adjustment valve 42 is closed and the second adjustment valve 43 is opened when replacing the filter unit 50, the filter unit 50 (the filter unit 50 and the magnetic field forming unit 60 in the present embodiment) can be excluded from the circulation point (supply point) of the cutting fluid flowing in the circulation path 40. Thereby, the cutting fluid leaking from the circulation path 40 when replacing the filter unit 50 can be suppressed to the minimum. In addition, the following method can also be adopted: the filter unit 50 and the magnetic field forming unit 60 are provided separately, and the magnetic field forming unit 60 is arranged at a position downstream of the confluence point on the downstream side of the bypass path 41 of the circulation path 40. According to this method, the process of passing the cutting fluid through the magnetic field forming unit 60 can continue even when replacing the filter unit 50.

[0039] The cutting fluid cleaning device 100, which is an embodiment of the industrial liquid cleaning device of the present invention, has been described in detail above, but the present invention is not limited to the above embodiments. For example, in the first embodiment, the filter unit 50 is configured in such a way that an opening 23 is formed on the bottom surface of the housing 20 and the mesh body is arranged to cover the opening 23. However, it is also possible to adopt a method of arranging the filter unit 50 constituted by other known methods on the path of the circulation path 40. In addition, the filter unit 50 can also be arranged on the bypass path 41 formed in the circulation path 40.

[0040] In addition, for the first regulating valve 42 and the second regulating valve 43 of the second embodiment, they are not limited to valves that only switch the passage of the cutting fluid by opening and closing, and flow regulating valves that can adjust the flow rate of the cutting fluid can also be used. Using flow regulating valves for the first regulating valve 42 and the second regulating valve 43 is advantageous in the following aspects: A part of the cutting fluid flowing in the flow path 40 can pass through the filtering section 50, and the service life of the filtering section 50 can be extended. In addition, even when the filtering section 50 is blocked, a part of the cutting fluid flowing in the flow path 40 can bypass the filtering section 50 and flow, so that the complete blockage of the flow path 40 can be avoided.

[0041] In addition, for the magnetic field forming section 60 of the above embodiment, the flow path space of the cylindrical container 61 is formed as a short cylinder, but a method of reducing the diameter size in a required length range including the part where the magnet 62 is arranged can also be adopted. By adopting this method, the flow velocity of the cutting fluid at the part where the magnet 62 is arranged can be increased, and the arrangement interval of the magnets 62 can be shortened. Thereby, it is advantageous in the following aspects: The central magnetic force of the magnetic field formed by the magnetic field forming section 60 can be increased, and the magnetic force treatment effect on the cutting fluid can be improved.

[0042] Moreover, a method of arranging an ozone generator in the middle of the flow path 40 and an operation control section (both not shown) for controlling the operation of the ozone generator can be adopted. When restarting the operation of the cutting fluid cleaning device 100 after the operation of the cutting fluid cleaning device 100 has stopped for more than a preset reference time, the operation control section can perform a process of operating the ozone generator within a preset ozone treatment time. Thereby, the deodorization treatment of the cutting fluid can be performed by bringing the cutting fluid into contact with the ozone generated by the ozone generator. In addition, by restricting the contact time between the cutting fluid and the ozone, it is advantageous in the following aspects: The deodorization treatment can be performed while preventing the deterioration of the cutting fluid.

[0043] Furthermore, in addition to the modification examples described above, a method of appropriately combining the modification examples described in the embodiment can also be adopted.

Claims

1. An industrial liquid cleaning device, characterized in that the industrial liquid cleaning device comprises: a pump that sucks and ejects the industrial liquid from a container containing the industrial liquid; a flow path that allows the industrial liquid sucked from the container to flow; a filtration unit that filters the industrial liquid; and a magnetic field forming unit that forms a magnetic field through which the industrial liquid flowing in the flow path passes, both the suction port and the discharge port of the flow path open into the interior of the container.

2. The industrial liquid cleaning device according to claim 1, characterized in that the filtration unit is disposed in a bypass path formed in the flow path, and at least one of the flow position and the flow rate of the industrial liquid can be adjusted by adjustment valves disposed in the flow path and the bypass path.

3. The industrial liquid cleaning device according to claim 1, characterized in that the industrial liquid cleaning device further includes: a housing that houses the pump and the magnetic field forming unit and is provided with the filtration unit and the flow path; and a holding body that suspends and holds the housing inside the container.

4. The industrial liquid cleaning device according to claim 3, characterized in that the housing is mounted on the holding body in such a manner that the height position of the suction port of the pump can be changed.

5. The industrial liquid cleaning device according to any one of claims 1 to 4, characterized in that the magnetic field forming unit is provided with a pair of magnet groups at multiple locations along the flow direction of the industrial liquid, and the pair of magnet groups forms the magnetic field in a direction orthogonal to the flow direction of the industrial liquid.

6. The industrial liquid cleaning device according to claim 5, characterized in that the orientations of the magnetic fields formed by the respective magnet groups are different in the flow direction of the industrial liquid.

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