JP3061849U - Magnetic separator - Google Patents

Abstract

(57) [Abstract] (with correction) [PROBLEMS] To provide a magnetic separator which is used for industrial machines such as a grinding machine and which mainly performs treatment of a water-soluble or water-insoluble coolant containing magnetic sludge. A fixed magnet drum (33) or (34) adopting a novel magnet arrangement method for uniformly attaching the sludge to the outer periphery of a rotating cylinder (16) is attached to the rotating cylinder (1).
The magnetic separator provided in the magnet 6 has a magnetic force distribution concentrated portion of the magnet fixed to the magnet drum (indicating a boundary portion between the N pole and the S pole of the magnet and adsorbing the sludge at this portion). Is reduced to 15 mm or less from about 25 to 35 mm in the past, so that the rotating cylinder 16
The sludge can be almost uniformly attached to the outer periphery of the substrate.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a magnetic separator for filtering the coolant discharged from an industrial machine such as a grinder.

[0002]

[Prior art]

 In the industry, in order to improve circulation reusability, in a magnetic separator for filtering the coolant discharged from an industrial machine such as a grinder, the magnetic separator in the coolant is uniformly distributed around the outer periphery of the rotating cylinder. It is required that sludge be adsorbed and drained smoothly after dewatering or deoiling to the outside of the magnetic separator. FIG. 6 is an example of a schematic front view including a partial cross section of a conventionally provided magnetic separator. The conventional magnetic separator as shown in FIG. 6 is provided with a non-magnetic rotating cylinder 16 containing a fixed magnet drum 15 in which magnets are arranged as shown in FIG. 7, and a speed reducer for rotating the rotating cylinder 16. The motor 20, a rubber roller 25 for squeezing out the coolant contained in the sludge adsorbed on the outer circumference of the rotary cylinder 16, and the sludge squeezed by the rubber roller 25 for squeezing from the rotary cylinder 16. It is mainly constituted by a sludge peeling plate 31 and a receiving plate 32 for scraping and discharging to the outside of the magnetic separator, and a base 11 having an inlet 12 and an outlet 13 for the coolant.

[0003]

[Problems to be solved by the invention]

 FIG. 7 is a perspective view showing an example of a fixed magnet drum 15 in which the distance between the magnetic force distribution concentrated portions 35 is 25 to 35 mm, which is commonly used in a conventionally provided magnetic separator. FIG. 8 is an explanatory view showing a state in which sludge filtered from the coolant is adsorbed on the outer circumference of the rotary cylinder 16 having the above-mentioned magnet drum 15 built therein. As shown in FIG. 8, in the conventional magnetic separator, when the sludge adsorbed on the outer periphery of the rotary cylinder 16 is transported, the magnetic force distribution concentrated point 35 of each single magnet (interval: 25 to 35 mm) The sludge is adsorbed on the outer periphery of the rotating cylinder 16 according to the above. However, depending on the method of flowing the coolant into the rotating cylinder 16, the sludge is uniformly applied to the magnetic force distribution concentrated portion 35 of the rotating cylinder 16. The amount of the sludge adsorbed on the outer periphery of the rotating cylinder 16 may vary greatly depending on the magnetic force distribution concentrated portion 35 of the rotating cylinder 16, and therefore, coolant from the sludge by the rubber roller 25 for drawing may be used. When the sludge is scraped off from the rotating cylinder 16, the coolant is discharged to the outside at the same time. In some cases, the flow path 24 of the coolant between the rotating cylinder 16 and the bottom plate of the magnetic separator main body is clogged by the sludge attached to the rotating cylinder 16 in a lump, and the coolant is magnetically separated. Since it may overflow from the upper part of the container base 11 to the outside of the magnetic separator, not only does the floor of the factory become dirty, but also in the case of using a water-insoluble coolant, the cost is also high. Was. Further, the sludge amount is greatly varied by the magnetic force distribution concentrated portions 35 of the respective single magnets of the rotating cylinder 16, and the sludge amount is greatly reduced and adhered. Problems such as sticking and adhesion to the rubber roller 25 also occur, and the shortening of the life of the squeezing rubber roller 25 can be considered. Claims 1 and 2 according to the present invention employ a novel magnet arrangement method for uniformly adhering the sludge to the outer periphery of the rotating cylinder 16 in order to solve those problems. It is an object of the present invention to provide a magnetic separator incorporating the rotating cylinder 16 and having a fixed magnet drum 33 or 34 incorporated therein. Claim 3 according to the present invention provides a new magnet arrangement for the fixed magnet drum 33 or 34 adopting the novel magnet arrangement method according to claims 1 and 2 to significantly reduce the magnet arrangement time. It is an object of the present invention to provide a magnetic separator incorporating a rotating cylinder 16 incorporating a fixed magnet drum 15 employing a simple magnet.

[0004]

In the magnetic separator according to the first aspect, the interval between the magnetic force distribution concentrated portions of the magnet fixed to the magnet drum (the boundary portion between the N pole and the S pole of the magnet) is extremely small. It is characterized by having a non-magnetic rotating cylinder having a built-in magnet drum with a narrow magnet arrangement. In the magnetic separator according to the second aspect, the magnets are arranged so that the magnetic force distribution concentrated portions (boundaries between the N pole and the S pole of the magnet) of the magnet fixed to the magnet drum have a fine mesh shape. A non-magnetic rotary cylinder having a built-in magnet drum is provided. A magnetic separator according to a third aspect is the magnetic separator according to the first and second aspects, in which the magnets are multipolar magnetized in a single magnet (hereinafter, a multipolar magnet) in order to perform the respective magnet arrangements. A non-magnetic rotating cylinder with a built-in magnet drum using the same.

[0005]

[Embodiment of the invention]

 The magnetic separator incorporating the fixed magnet drum employing the novel magnet arrangement method according to the present embodiment in a non-magnetic rotating cylinder is a magnetic separator for filtering the coolant discharged from an industrial machine such as a grinder. It is. The magnetic separator that filters the coolant discharged from an industrial machine such as a grinder, as described above, uniformly adsorbs the sludge in the coolant on the outer periphery of the rotating cylinder, and removes the sludge in the sludge. It is desired that the contained coolant be sufficiently squeezed by a squeezing rubber roller and then smoothly discharged to the outside of the magnetic separator. Hereinafter, typical embodiments of the present invention will be described with reference to the drawings. However, the dimensions, shapes, materials, relative positions, and the like of the components described in this example are not intended to limit the scope of the present invention only to them unless otherwise specified. , Is merely an illustration. The magnetic separator in which the fixed magnet drum 33 or 34 adopting the novel magnet arrangement method according to the present embodiment is incorporated in the rotating cylinder 16 is understood from FIGS. 1, 2, 3, 4 and 5. The magnetic separator substrate 11 has an inlet 12 and an outlet 13, and a flow straightening plate 14 is provided in front of the inlet 12. Also, between the inflow and outflow ports, the rotating cylinder 16 which is concentric with the magnet drum 33 or 34 and whose inner wall rotates with a small gap with the magnet drum 33 or 34 is provided inside the magnetic separator base 11 with the magnet drum 33 or 34. It is settled with. The arrangement of the magnets of the magnet drums 33 or 34 is as shown in FIGS. 2 and 3, whereby the sludge in the coolant is almost uniformly adsorbed on the outer periphery of the rotary cylinder 16. In addition, the coolant contained in the sludge can be sufficiently squeezed by the squeezing rubber roller 25, and then can be smoothly discharged to the outside of the magnetic separator. The magnet arrangement of the magnet drum 33 shown in FIG. 2 is such that the interval between the magnetic force distribution concentrated portions 35 is changed from a general 25 to 35 mm to 15 mm or less. As shown in FIG. 5, the sludge can be almost uniformly adsorbed on the rotating cylinder 16 without being concentrated on the specific magnetic force distribution concentrated portion 35 as in the related art. The magnet arrangement of the magnet drum 34 shown in FIG. 3 is such that the magnetic force distribution concentrated portion 35 has a fine mesh shape, and the magnetic force distribution on the rotating cylinder 16 is almost uniform regardless of the location. As shown in FIG. 5, the sludge in the coolant can be adsorbed to the rotating cylinder 16 in a substantially uniform state. FIG. 4 shows an example of a multipolar magnet 37 for performing the magnet arrangement of FIGS. 2 and 3 in a short time. Thus, the magnet arrangement of the small magnets shown in FIGS. 2 and 3 can be easily performed. It is also conceivable that the whole magnet attached to the magnet drum is a single multi-pole magnet. The rotating shaft 17 of the rotating cylinder 16 extends outside the magnetic separator base 11, where a sprocket wheel 18 is attached, and a deceleration gear attached to a bracket 19 protruding from the magnetic separator base 11. A chain 22 is hung between the small sprocket wheel 21 on the motorized motor 20 side and the sprocket wheel 18 to rotate the rotary cylinder 16 in the direction of the arrow shown in the figure. A semi-cylindrical bottom plate 23 coaxial with the rotary cylinder 16 is provided below the rotary cylinder 16, and forms a flow path 24 with the rotary cylinder 16. On the upper part of the rotating cylinder 16, the squeezing rubber roller 25 can be freely moved up and down in the radial direction of the rotating cylinder 16 by respective screw rods 26 set up from the left and right sides of the magnetic separator base 11. Thus, the outer periphery of the rotating cylinder 16 is constantly pressed by a coil spring 28 for each threaded rod 26, and the roller is rotated in the radial direction of the rotating cylinder 16. It can extend within the axis of the axis 30. The scraping plate 29 is for scraping off the sludge adhering to the outer periphery of the squeezing rubber roller 25. The sludge in the coolant that has been uniformly adsorbed on the sludge can be smoothly separated. In addition, the device of the present invention is not limited to the embodiment described above and shown in the drawings, but can be appropriately changed without departing from the scope of the invention.

[Effect of the invention]

 The non-magnetic rotating cylinder with a built-in magnet drum that has a very narrow magnet arrangement with a very narrow gap between the magnetic force distribution concentrated portions of the magnet fixed to the magnet drum (boundary between the N pole and S pole of the magnet) of the present invention. According to a magnetic separator or the like in which the magnetic force distribution concentrated portion of the magnet fixed to the magnet drum (the boundary between the N pole and the S pole of the magnet) is magnetized so as to form a fine mesh shape, The distribution of magnetic force on the rotating cylinder is smoothed, and the sludge in the coolant can be adsorbed to the rotating cylinder in a nearly uniform state. As a result, the adsorption sludge is smoothly transported, the possibility of clogging by the sludge in the magnetic separator is reduced, the coolant squeezing performance is improved from the adsorption sludge, and the life of the squeezing rubber roller and scraping plate is extended. The effect can be significantly improved. Also, when assembling the magnets of the magnet drum to the above magnet arrangement, changing the small single magnets to multi-pole magnets can significantly reduce the assembly time of the magnet drum, It is conceivable that the entire magnet is a single multi-pole magnet. These effects can eliminate the possibility of clogging due to massive sludge suddenly flowing into the magnetic separator, as well as the water content and oil content of the sludge discharged from the magnetic separator, as compared with the conventional magnetic separator. The efficiency can be greatly reduced, and the post-treatment of sludge discharged from the magnetic separator can be performed very easily. In particular, when expensive water-insoluble coolant is used, it can also contribute to reducing the operating costs of industrial machines such as grinders.

[Brief description of the drawings]

FIG. 1 is a schematic front view including a partial cross section of a magnetic separator having a fixed magnet drum adopting the novel magnet arrangement method of the present invention.

FIG. 2 is a development view showing a part of a magnet part showing an example of a magnet drum in which magnets are arranged very narrowly at a magnetic force distribution concentrated portion of the magnet of the present invention.

FIG. 3 is a development view showing a part of a magnet part showing an example of a magnet drum in which magnets are arranged so that a magnetic force distribution concentrated portion of the magnet of the present invention has a fine mesh shape.

FIG. 4 is a perspective view showing an example of the multi-pole magnet of the present invention.

FIG. 5 is an explanatory view showing a state of sludge adsorbed on a rotating cylinder having a built-in magnet drum employing the magnet arrangement of the present invention.

FIG. 6 is a schematic front view including a partial cross section of a conventional magnetic separator.

FIG. 7 is a perspective view showing an example of a magnet drum incorporating a conventional magnet.

FIG. 8 is an explanatory diagram showing a state of sludge adsorbed on a rotating cylinder having a conventional magnet drum built therein.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Base 28 ... Coil spring 12 ... Inlet 29 ... Scrape-off plate 13 ... Outlet 30 ... Roller shaft 14 ... Rectifying plate 31 ... Sludge peeling plate 15 ... Magnet drum 32 ... Receiving plate 16 ... Rotating cylinder 33 ... Concentration distribution of magnetic force of magnet 17 ... Magnet arrangement to narrow the interval of rotation axis 18 ... Sprocket wheel Magnet arranged De 19: Bracket ram 20: Motor with a reducer 34: Concentration distribution of magnetic force of magnet 21: Small sprocket wheel Magnet in a fine mesh at the place 22: Chain Magnet arranged in stones 23・ ・ ・ Bottom plate Todrum 24 ・ ・ ・ Channel 35 ・ ・ ・ Magnetic force distribution concentrated point 25 ・ ・ ・ Roller rubber roller 36 ・ ・ ・ Magnet 26 ・ ・ ・ Screw rod 37 ・ ・ ・ Multi-pole magnet 27 ・ ・ ・ Roller

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[Procedure amendment]

[Submission date] March 15, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (3)

[Utility model registration claims] 1. A water-soluble or water-insoluble coolant mainly containing magnetic sludge, which is used in an industrial machine such as a grinding machine, is formed in a predetermined gap with a non-magnetic rotating cylinder having a built-in magnet drum. The sludge in the coolant is adsorbed on the outer periphery of the rotating cylinder, and the sludge is dewatered and discharged by a squeezing rubber roller constantly pressing the outer periphery of the rotating cylinder. In the magnetic separator to be processed, a magnetic force distribution concentrated portion of the magnet fixed to the magnet drum in the rotating cylinder (indicating a boundary portion between the N pole and the S pole of the magnet, and adsorbing the sludge around this portion. The magnetic separator is characterized in that the magnet arrangement is extremely narrow. 2. The magnetic separator according to claim 1, wherein a magnetic force distribution concentrated portion (a boundary between the N pole and the S pole of the magnet) of the magnet fixed to the magnet drum in the rotary cylinder is
A magnetic separator characterized in that magnets are arranged in a fine mesh. 3. The magnetic separator according to claim 1, wherein a multi-pole magnetized magnet is used in a single magnet to perform each magnet arrangement. Separator.