JP5044619B2 - Magnetic foreign matter separator - Google Patents

Description

  The present invention relates to a magnetic foreign matter separating apparatus for separating magnetic foreign matter from waste fluid such as coolant mixed with magnetic foreign matter discharged during operation of a metal processing machine or the like.

  Conventionally, a magnetic plate is arranged at the bottom of the processing tank, and a liquid flow guide is provided to guide the waste liquid so that it flows near the top surface of the magnetic plate. Devices have been proposed (Patent Documents 1 and 2). Magnetic foreign matter attracted and accumulated on the magnet plate and nonmagnetic foreign matter settled by its own weight are scraped out of the processing tank by a nonmagnetic scraper attached to the conveyor chain.

Japanese Utility Model Publication No. 56-168250 Japanese Utility Model Publication No. 63-30498

  In the conventional separation apparatus, magnetic foreign matters that cannot be attracted to the bottom magnet plate are mixed with the treated coolant and discharged from the treatment tank.

(Object of invention)
An object of the present invention is to provide a magnetic submerged foreign matter separation device capable of improving the separation accuracy of magnetic foreign matter.

In order to achieve the above object, a magnetic type submerged liquid separation apparatus according to the present invention includes a treatment tank into which a liquid to be treated containing magnetic foreign substances flows, a magnet plate installed at the bottom of the treatment tank, and the magnet In a magnetic submerged foreign matter separation device comprising a scraper that moves magnetic foreign matter adsorbed and accumulated on a plate and discharges it outside the processing tank, a magnet roller disposed above the magnet plate and rotating, a liquid flow guide for guiding the liquid to be treated flowing along the magnet plate near the surface of the magnet roller, and the outlet of the secondary clean liquid for flowing out liquid to be treated that has passed through the near surface of the magnet roller, the A scraping plate for scraping off magnetic foreign matter adsorbed on the surface of the magnet roller, and a position before the liquid to be processed is guided near the surface of the magnet roller by the liquid flow guide. And, it is characterized in that it has a flow outlet of different primary clean liquid from said second clean-liquid outlet.

  According to the present invention, it is possible to improve the separation accuracy of magnetic foreign substances.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a magnetic submerged foreign matter separating apparatus that is Embodiment 1 of the present invention. 2 is an enlarged cross-sectional view illustrating a main part of Example 1. FIG. 6 is an enlarged cross-sectional view showing Example 2. FIG.

  The mode for carrying out the present invention is as shown in Examples 1 and 2 below.

  FIG. 1 is a cross-sectional view showing a magnetic submerged foreign material separator according to a first embodiment of the present invention. The processing tank 1 includes an inflow portion 2 through which coolant waste liquid (liquid to be processed) flows from above, an outlet 3 from which clean coolant (liquid to be processed) from which foreign substances are separated flows out, magnetic foreign substances and And a discharge unit 4 through which magnetic foreign substances are discharged. A magnet plate 5 is installed at the bottom of the processing tank 1, and its end (the right end in FIG. 1) extends to the middle of the inclined bottom (above the liquid level). Foreign matter is primarily separated by adsorption to the magnet plate 5 and sedimentation by its own weight.

  The nonmagnetic scraper 6 is for scraping out magnetic foreign matter and nonmagnetic foreign matter attracted and accumulated on the magnet plate 5, and both ends thereof are fixed to the conveyor chain 7. The conveyor chain 7 is driven by a driving device 8 such as a motor. When driven by the driving device 8, the scraper 6 moves in the counterclockwise direction of FIG. 1 while sliding on the magnet plate 5, and carries magnetic foreign matter and nonmagnetic foreign matter along the bottom of the processing tank 1 for discharge. It discharges out of processing tank 1 from part 4.

  A non-magnetic liquid flow guide 9 is disposed above the magnet plate 5. As shown in FIG. 2, the liquid flow guide 9 includes three guide portions 9a, 9b, and 9c that are integrally provided. A magnet roller 11 having a cylindrical magnet 10 is rotatably provided at a position surrounded by the guide portions 9b and 9c. The guide portion 9a raises the liquid to be processed that flows along the magnet plate 5 to obtain a primary clean liquid. The guide portion 9 b guides the primary clean liquid near the surface of the magnet roller 11 and diverts it to the left and right, and guides the secondary clean liquid that has passed near the surface of the magnet roller 11 to the two outlets 3. The primary clean liquid may be guided only to one side without being diverted to the left and right. In this case, the number of outlets 3 is one.

  In the process in which the primary clean liquid flows along the magnet roller 11, the magnetic foreign matter remaining in the primary clean liquid is adsorbed on the surface of the magnet roller 11 by magnetic force. The secondary clean liquid from which the magnetic foreign matter has been secondarily separated by the magnet roller 11 is guided to the outlet 3 by the guide portion 9 b and flows out of the processing tank 1.

  The magnet roller 11 has a structure that rotates when the moving force of the conveyor chain 7 is transmitted through the gear 12. A scraping plate 13 in contact with the surface of the magnet roller 11 is attached to the mounting member 14, and the scraping plate 13 scrapes off the magnetic foreign matter adsorbed on the surface of the magnet roller 11 by the rotation of the magnet roller 11. Is dropped on the magnet plate 5. The guide portion 9 c guides the magnetic foreign matter descending from above to the vicinity of the surface of the magnet roller 11 and attracts it to the magnet roller 11.

  In order to allow the primary clean liquid to flow out, an outlet 15 that is different from the outlet 3 is illustrated between the two opposing guide portions 9a, that is, a position before being guided near the surface of the magnet roller 11. 2 can be provided. Thereby, the primary clean liquid (outflow port 15) and the secondary clean liquid (outflow port 3) can be separately discharged from one processing tank 1, and the clean liquid can be used effectively according to the application. .

  The liquid flow guide 9 and the magnet roller 11 are not limited to one for each treatment tank 1, and two or more can be provided. A second embodiment in which two liquid flow guides 9 and two magnet rollers 11 are provided is shown in FIG. In Example 2, the processing amount can be increased without increasing the flow rate. In Example 2, there are three outlets 3, but one or more outlets are sufficient. Moreover, the outflow port 15 can also be provided and what is necessary is just one or more places in that case.

  According to the embodiment described above, the magnetic foreign matter is separated also by the magnet roller 11 above the magnetic plate 5, so that the separation accuracy of the magnetic foreign matter can be improved. Further, since the magnet plate 5 and the magnet roller 11 are used, it is possible to eliminate the use of consumables such as filter media. Furthermore, since the magnetic foreign matter is separated in two stages by one processing tank, the primary clean liquid and the secondary clean liquid can be separated and discharged at each stage.

1 Treatment Tank 3 Outlet 5 Magnet Plate 6 Scraper 9 Liquid Flow Guide 11 Magnet Roller 13 Scraping Plate 15 Outlet

Claims (1)

A treatment tank into which a liquid to be treated containing magnetic foreign matters is introduced;
A magnet plate installed at the bottom of the treatment tank;
In the magnetic submerged foreign matter separating apparatus comprising a scraper that moves the magnetic foreign matter attracted and collected on the magnet plate and discharges it outside the processing tank,
A magnet roller disposed above the magnet plate and rotating;
A liquid flow guide for guiding the liquid to be processed flowing along the magnet plate near the surface of the magnet roller;
An outlet of a secondary clean liquid that causes the liquid to be processed that has passed near the surface of the magnet roller to flow out ;
A scraping plate for scraping off magnetic foreign matter adsorbed on the surface of the magnet roller;
A primary clean liquid outlet that is different from the secondary clean liquid outlet provided at a position before the liquid to be processed is guided near the surface of the magnet roller by the liquid guide ; A magnetic-type foreign matter separator in liquid.

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