Abstract: Provided is a magnetic separator in which even when content of a magnetic sludge in a liquid to be treated increases, recovery performance of the magnetic sludge is less likely to degrade and a malfunction of the device is less likely to occur. A part of an outer peripheral surface of a magnet drum is immersed in a flow of the liquid to be treated containing the magnetic sludge. A removing mechanism removes the magnetic sludge on the outer peripheral surface of the magnet drum from the outer peripheral surface of the magnet drum. A magnetic sludge containing information acquisition device acquires magnetic sludge containing information relating to a content of the magnetic sludge contained in the liquid to be treated. A control device changes a magnetic sludge removal capability of the magnet drum depending on the magnetic sludge containing information acquired by the magnetic sludge containing information acquisition device.

Abstract: There is provided a magnet separator that removes a magnetic body from a liquid to be treated, the magnet separator including a rotary drum in which a plurality of magnets are disposed, and a sprocket that is fixed to the rotary drum and transmits a driving force, in which the sprocket is formed by a plurality of sprocket split bodies having sprocket teeth.

Abstract: A rotary drum-type magnetic separator includes a first rotary drum on which a plurality of magnets are disposed and separates unnecessary objects from a used coolant liquid. A second rotary drum on which a plurality of magnets are disposed is provided before the first rotary drum in a direction in which the used coolant liquid flows separately from the first rotary drum. The second rotary drum includes an outer tube and an inner tube. A scraper which scrapes off the unnecessary objects attached to the second rotary drum is connected to a bottom member which forms a flow path below the first rotary drum.

Abstract: A rotary-drum type magnetic separator includes a rotary drum on which a plurality of magnets are disposed, and separates an unnecessary material contained in used coolant. The magnetic separator includes a pair of partition portions that are provided below both end portions of the rotary drum and partition a flow passage, in which the used coolant flows, into a flow passage that is formed near the middle portion of the rotary drum and flow passages that are formed near both end portions of the rotary drum; and openings that are formed at lower portions of the flow passages partitioned by the partition portions. The partition portions function as filters preventing the unnecessary material from moving to the flow passages, which are formed near both end portions of the rotary drum, from the flow passage that is formed near the middle portion of the rotary drum.

Abstract: A device for suppressing slit clogging capable of maintaining recovery rates of ground particles without clogging of the ground particles in an opening is provided. The device for suppressing slit clogging is used in a rotating-drum type magnetic separator 1 which includes a rotating drum 3 on which a plurality of magnets 4 are disposed and separates unnecessary matters in treated coolant liquid. A slit-like opening 8 is provided below the rotating drum 3, and the device includes a cylindrical groove cam mechanism, which is configured by a cylindrical shaft 21 having a groove which can be rotated and a slit cleaning member 22 which engages with the groove, below the opening 8. The slit cleaning member 22 moves along a longitudinal direction of the opening 8.

Abstract: A rotary-drum type magnetic separator includes a rotary drum on which a plurality of magnets are disposed, and separates an unnecessary material contained in used coolant. The magnetic separator includes a pair of partition portions that are provided below both end portions of the rotary drum and partition a flow passage, in which the used coolant flows, into a flow passage that is formed near the middle portion of the rotary drum and flow passages that are formed near both end portions of the rotary drum; and openings that are formed at lower portions of the flow passages partitioned by the partition portions. The partition portions function as filters preventing the unnecessary material from moving to the flow passages, which are formed near both end portions of the rotary drum, from the flow passage that is formed near the middle portion of the rotary drum.

Abstract: A device for suppressing slit clogging capable of maintaining recovery rates of ground particles without clogging of the ground particles in an opening is provided. The device for suppressing slit clogging is used in a rotating-drum type magnetic separator 1 which includes a rotating drum 3 on which a plurality of magnets 4 are disposed and separates unnecessary matters in treated coolant liquid. A slit-like opening 8 is provided below the rotating drum 3, and the device includes a cylindrical groove cam mechanism, which is configured by a cylindrical shaft 21 having a groove which can be rotated and a slit cleaning member 22 which engages with the groove, below the opening 8. The slit cleaning member 22 moves along a longitudinal direction of the opening 8.