Sludge recovery apparatus and sludge recovery method

Abstract

To reduce sludge in liquid.SOLUTION: A sludge recovery device comprises: a non-magnetic cylindrical part (110) which has an immersion part (112) that is immersed in liquid (E); a magnet (120) which is positioned inside the cylindrical part (110) and attracts sludge (G) to the outer surface of the cylindrical part (110) with magnetic force; a movement part (130) which moves the magnet (120) within the cylindrical part (110); and a separation part (140) which separates the interaction between the magnet (120) moved by the movement part (130) and the sludge (G) adhering to the outer surface of the cylindrical part (110).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a sludge recovery device and a sludge recovery method.

Background Art

[0002] The immersion type liquid cooling device described in Patent Document 1 includes a refrigerant circuit connecting a compressor, a condenser, an expansion valve, and an evaporator, and immerses the evaporator in a liquid to cool the liquid. The evaporator includes a coil portion. The coil portion has an inner refrigerant pipe spirally wound along the vertical direction and an outer refrigerant pipe surrounding the inner refrigerant pipe and spirally wound along the vertical direction. Fluorine paint is applied to the inner refrigerant pipe and the outer refrigerant pipe to prevent sludge such as grinding chips contained in the working fluid from adhering thereto.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the sludge in the working fluid that did not adhere to the inner refrigerant pipe and the outer refrigerant pipe due to the fluorine paint remains in the working fluid (liquid) without being recovered.

[0005] An object of the present disclosure is to be able to reduce sludge in a liquid.

Means for Solving the Problems

[0006] The sludge recovery device of the first embodiment comprises a non-magnetic cylindrical portion (110), a magnet (120) provided inside the cylindrical portion (110) for adhering sludge (G) to the outer surface of the cylindrical portion (110) by magnetic force, a moving portion (130) for moving the magnet (120) inside the cylindrical portion (110), and a disconnecting portion (140) for disconnecting the linkage between the magnet (120) moved by the moving portion (130) and the sludge (G) adhering to the outer surface of the cylindrical portion (110).

[0007] In the first embodiment, the separation unit (140) is positioned outside the liquid (E), and a portion of the cylindrical unit (110) is immersed in the liquid (E) to cause sludge (G) in the liquid (E) to adhere to the outer surface of the cylindrical unit (110) by the magnetic force of the magnet (120). Then, the magnet (120) is moved by the moving unit (130), causing the sludge (G) attached to the outer surface of the cylindrical unit (110) to move with the magnet (120) due to its magnetic force. However, by moving the magnet (120) to the location where the separation unit (140) is positioned, the link between the magnet (120) and the sludge (G) can be disconnected. As a result, the sludge (G) can be separated from the outer surface of the cylindrical unit (110) and recovered, thereby reducing the amount of sludge (G) in the liquid (E).

[0008] In a second embodiment, the movable part (130) includes a string-like member connected to the magnet (120) and extending to the outside of the cylindrical part (110) through an opening (111) formed in the cylindrical part (110).

[0009] In the second embodiment, the magnet (120) inside the cylindrical portion (110) can be moved by gripping the portion of the movable portion (130) located outside the cylindrical portion (110) through the opening (111) of the cylindrical portion (110) and pulling the movable portion (130).

[0010] In the third embodiment, in the first or second embodiment, the separating portion (140) has a shape that protrudes outward from the outer surface of the cylindrical portion (110).

[0011] In the third embodiment, the detachment portion (140) can catch and collect the sludge (G) adhering to the outer surface of the cylindrical portion (110).

[0012] In the fourth embodiment, in any one of the first to third embodiments, the magnet (120) is moved by the moving part (130) so that the magnet (120) passes through the disconnecting part (140) in the direction (X) in which the cylindrical portion (110) extends, thereby disconnecting the linkage between the magnet (120) moved by the moving part (130) and the sludge (G) adhering to the outer surface of the cylindrical portion (110).

[0013] In the fourth embodiment, the magnetic force acting on the sludge (G) is suppressed, allowing the sludge (G) adhering to the outer surface of the cylindrical portion (110) by the magnetic force to be pulled away from the outer surface of the cylindrical portion (110) and recovered.

[0014] The fifth embodiment is such that, in any one of the first to fourth embodiments, the magnet (120) has a spherical shape.

[0015] In the fifth embodiment, the magnet (120) can be easily moved within the cylindrical portion (110).

[0016] A sixth aspect is, in the fifth aspect, in which a plurality of magnets (120) are arranged within the cylindrical portion (110) along the direction (X) in which the cylindrical portion (110) extends, and the movable portion (130) is connected to at least one of the plurality of magnets (120) such that the plurality of magnets (120) move together as a whole.

[0017] In the sixth embodiment, multiple magnets (120) can be moved integrally within the cylindrical portion (110) by the movable portion (130).

[0018] The seventh embodiment is one of the first to sixth embodiments, wherein the cylindrical portion (110) includes a first horizontal portion (113a) extending horizontally, and the detachment portion (140) is provided on the outer surface of the first horizontal portion (113a).

[0019] In the seventh aspect, the sludge (G) dropped from the separation part (140) can be easily recovered.

[0020] The eighth aspect is any one of the first to seventh aspects, wherein the cylindrical part (110) includes a second horizontal part (112a) extending along the horizontal direction, the end part (110b) side is immersed in the liquid (E), and the second horizontal part (112a) is located closer to the end part (110b) of the cylindrical part (110).

[0021] In the eighth aspect, by providing the second horizontal part (112a) in the liquid (E) and arranging the magnet (120) in the second horizontal part (112a), the sludge (G) can be attached to the outer surface of the second horizontal part (112a) by the magnetic force of the magnet (120).

[0022] The ninth aspect is any one of the first to eighth aspects, further comprising an outer cylindrical part (150) covering a part of the cylindrical part (110), the cylindrical part (110) passes through a housing (30) disposed outside the liquid (E), and the outer cylindrical part (150) covers a part of the cylindrical part (110) provided inside the housing (30).

[0023] In the ninth aspect, it is possible to suppress the sludge (G) from remaining in the housing (30).

[0024] <00000**********87>The tenth aspect is the ninth aspect, wherein the outer cylindrical part (150) includes an outer cylindrical part (154) protruding outside the housing (30), and a flange part (160) protruding outward from the outer surface of the outer cylindrical part (154) is provided on the outer cylindrical part (154).

[0025] In the tenth aspect, it is possible to suppress the sludge (G) that cannot fit into the space between the outer cylindrical part (150) (the space between the cylindrical part (110) and the outer cylindrical part (150)) from moving to the housing (30) side and adhering to the housing (3).

[0026] In the sludge recovery method of the eleventh aspect, an immersion part (112), which is a part of a non-magnetic cylindrical part (110), is immersed in a liquid (E), and an outer liquid part (113), which is another part of the cylindrical part (110), is arranged outside the liquid (E). A magnet (120) is arranged inside the immersion part (112), and a step of attaching sludge (G) in the liquid (E) to the outer surface of the immersion part (112) by the magnetic force of the magnet (120); a step of moving the magnet (120) from the location where the immersion part (112) is located to the location where the outer liquid part (113) is located inside the cylindrical part (110), so as to move the sludge (G) adhering to the outer surface of the immersion part (112) to the outer surface of the outer liquid part (113); a step of disconnecting the linkage between the moving magnet (120) and the sludge (G) adhering to the outer surface of the cylindrical part (110) outside the liquid (E); and a step of recovering the sludge (G) outside the liquid (E).

[0027] In the eleventh aspect, the sludge (G) in the liquid (E) can be reduced.

Brief Description of the Drawings

[0028] [Figure 1] FIG. 1(a) is a cross-sectional view of a sludge recovery device. FIG. 1(b) is a cut end face view of the separation part seen from above. [Figure 2] FIG. 2 is a cross-sectional view of a sludge recovery device. [Figure 3] FIG. 3 is a cross-sectional view of a sludge recovery device. [Figure 4] FIG. 4 is a perspective view showing the configuration of a cooling device. [Figure 5] FIG. 5 is a schematic view showing the configuration of a refrigerant circuit.[[ID=Z5]] [Figure 6] FIG. 6 is a perspective view showing the configuration of a hydraulic device. [Figure 7] FIG. 7 is a cross-sectional view of a first modification of a sludge recovery device. [Figure 8] FIG. 8 is a cross-sectional view of a first modification of a sludge recovery device. [Figure 9]Figure 9 is a cross-sectional view of a second modified example of the sludge recovery device. [Figure 10] Figure 10 is a cross-sectional view of a third modified example of the sludge recovery device. [Figure 11] Figure 11(a) is a cross-sectional view of the bottom surface of the housing, viewed from below. Figure 11(b) is a cross-sectional view of the side surface of the housing, viewed from the horizontal. [Figure 12] Figure 12(a) is a cross-sectional view of the separated portion seen from the horizontal direction. Figure 12(b) is a cross-sectional view of the flange portion seen from the bottom horizontal direction. [Figure 13] Figure 13 is a cross-sectional view of a third modified example of the sludge recovery device. [Figure 14] Figure 14 is a cross-sectional view of a third modified example of the sludge recovery device. [Modes for carrying out the invention]

[0029] The embodiments of this disclosure will be described in detail below with reference to the drawings. This disclosure is not limited to the embodiments shown below, and various modifications are possible without departing from the technical idea of ​​this disclosure. Since the drawings are for conceptual explanation of this disclosure, dimensions, ratios, or numbers may be exaggerated or simplified as necessary for ease of understanding. In each embodiment, modification, and drawing, the same or corresponding parts are denoted by the same reference numerals, and detailed descriptions and their associated effects will not be repeated.

[0030] -Sludge Recovery System- An embodiment of the sludge recovery apparatus of the present invention, a sludge recovery apparatus (100), will be described.

[0031] The sludge recovery device (100) is a device for reducing sludge in liquid (E). Liquid (E) is stored in a tank (T). The symbol (E1) indicates the liquid level of liquid (E) stored in tank (T). Sludge (G) is, for example, metal powder, grinding chips, or abrasives. In this embodiment, sludge (G) is a magnetic substance. Liquid (E) is the liquid (E) to which sludge (G) is supplied as an impurity. Liquid (E) is, for example, a cutting fluid such as grinding fluid and spindle lubricant for machine tools.

[0032] As shown in Figures 1(a) and 1(b), the sludge recovery device (100) comprises a cylindrical section (110), a magnet (120), a moving section (130), and a detaching section (140).

[0033] The cylindrical portion (110) is a hollow member. The cylindrical portion (110) is a nonmagnetic material. In this embodiment, the cylindrical portion (110) has an annular cross-section perpendicular to the direction (X) in which it extends. An opening (111) is formed at one end (110a) of the cylindrical portion (110) that communicates with the inside and outside of the cylindrical portion (110). The other end (110b) of the cylindrical portion (110) may be open to communicate with the inside and outside of the cylindrical portion (110), or it may be closed. The other end (110b) side of the cylindrical portion (110) is placed in the liquid (E) inside the tank (T), and the one end (110a) side of the cylindrical portion (110) is placed outside the liquid (E). In this embodiment, the cylindrical portion (110) has a shape that extends along the vertical direction. The vertical direction refers to the vertical direction.

[0034] In the following, the direction (X) in which the cylindrical portion (110) extends may be referred to as the cylindrical direction (X). In the cylindrical direction (X), the direction toward one end (110a) may be referred to as the one-direction side (X1), and the direction toward the other end (110b) may be referred to as the other-direction side (X2).

[0035] The cylindrical portion (110) includes an immersion portion (112) and an external portion (113). The immersion portion (112) is the part of the cylindrical portion (110) closer to the other end (110b) and is immersed in the liquid (E) inside the tank (T). The external portion (113) is the part of the cylindrical portion (110) closer to one end (110a) and is located outside the liquid (E) (in the atmosphere).

[0036] The magnet (120) is a permanent magnet. The magnet (120) has a spherical shape. Multiple magnets (120) are arranged inside the cylindrical portion (110) along the cylindrical direction (X). The shape of the magnet (120) is not particularly limited. Furthermore, the number of magnets (120) provided inside the cylindrical portion (110) is not particularly limited; there may be multiple magnets (120) or just one magnet.

[0037] The movable part (130) is a component for moving the magnet (120) along the cylindrical direction (X) within the cylindrical part (110). The movable part (130) is a string-like component. The movable part (130) is made of, for example, nylon. The material of the movable part (130) is not particularly limited. One end (131) of the movable part (130) is connected to the magnet (120) within the cylindrical part (110). The other end (132) of the movable part (130) extends to the outside of the cylindrical part (110) through the opening (111) of the cylindrical part (110). An operator can grasp the other end (132) of the movable part (130) and pull the movable part (130).

[0038] The configuration for connecting the movable part (130) and the magnet (120) is not particularly limited. For example, a hole may be provided in the magnet (120), and a string-like movable part (130) may be inserted through the hole and tied to the magnet (120). When multiple magnets (120) are provided inside the cylindrical part (110), the movable part (130) is connected to at least one of the multiple magnets (120) so that the multiple magnets (120) move as a whole. In this case, for example, a hole may be provided in all of the multiple magnets (120), and a string-like movable part (130) may be inserted through the hole, and the movable part (130) may be connected to the magnet (120) located furthest to the other direction (X2) among the multiple magnets (120).

[0039] The separation portion (140) is provided on the outer surface of the cylindrical portion (110) and has a shape that protrudes outward from the outer surface of the cylindrical portion (110). The separation portion (140) is provided on the liquid-external side (113) of the cylindrical portion (110). The separation portion (140) is an annular shape formed along the circumferential direction of the cylindrical portion (110) and is a plate-shaped member that protrudes radially from the outer surface of the cylindrical portion (110) in a direction perpendicular to the cylindrical direction (X).

[0040] - Procedure for recovering sludge - As shown in Figure 1(a), when the immersion portion (112) of the cylindrical portion (110) is immersed in the liquid (E), the liquid-external portion (113) is placed in the atmosphere outside the liquid (E), and a magnet (120) is placed inside the immersion portion (112) of the cylindrical portion (110), the magnetic force of the magnet (120) causes sludge (G) in the liquid (E) to adhere to the outer surface of the immersion portion (112). The sludge (G) adheres to the outer surface of the immersion portion (112) in the area around the magnet (120).

[0041] When the other end (132) of the movable part (130) is grasped and the movable part (130) is pulled, the magnet (120) inside the cylindrical part (110) moves to one side (X1) in the cylindrical direction (X). Consequently, the sludge (G) adhering to the outer surface of the cylindrical part (110) due to the magnetic force of the magnet (120) also moves to one side (X1) in the cylindrical direction (X).

[0042] As shown in Figure 2, when the movable part (130) is pulled further, the magnet (120) moves from the location of the immersion part (112) within the cylindrical part (110) to the location of the outside of the liquid (113). As a result, the sludge (G) that was attached to the outer surface of the immersion part (112) is also moved by the magnetic force of the magnet (120) to the outer surface of the outside of the liquid (113) and becomes attached to the outer surface of the outside of the liquid (113).

[0043] As shown in Figure 3, when the moving part (130) is pulled further, the sludge (G), which was moving with the cylindrical part (110) due to the magnetic force of the magnet (120), gets stuck in the detachment part (140) and stops in the cylindrical direction (X), while the magnet (120) passes through the detachment part (140). As a result, the linkage between the magnet (120), which is moved by the moving part (130), and the sludge (G) attached to the outer surface of the cylindrical part (110) is broken. Consequently, the magnet (120) is separated from the sludge (G), and the magnetic force of the magnet (120) acting on the sludge (G) is suppressed.

[0044] The magnetic force of the magnet (120) acting on the sludge (G) is suppressed, causing the sludge (G) to fall from the separation section (140) by its own weight and be contained in the container (Y). As a result, the sludge (G) in the liquid (E) can be recovered, thus reducing the amount of sludge (G) in the liquid (E).

[0045] -First example of use of a sludge recovery device- The sludge recovery device (100) is used in the cooling device (1). The cooling device (1) will be described with reference to Figures 4 and 5. As shown in Figures 4 and 5, the cooling device (1) includes a housing (11), a compressor (12), a condenser (13), an expansion mechanism (14), an evaporator (15), a blower fan (16), etc. The compressor (12), condenser (13), expansion mechanism (14), and evaporator (15) are connected to the refrigerant circuit (10) in this order. The refrigerant circuit (10) is filled with refrigerant. The refrigerant circuit (10) performs a vapor compression type refrigeration cycle. The compressor (12), condenser (13), and expansion mechanism (14) are housed in the housing (11). The evaporator (15) includes a coil section through which the refrigerant flows and is positioned to be immersed in the liquid (E) in the tank (T). The liquid (E) in the tank (T) circulates between the machine tool (M) and the tank (T). The liquid (E) that flows out of the tank (T) is heated by the machine tool (M). The heated liquid (E) flows back into the tank (T). The evaporator (15) cools the liquid (E) in the tank (T) by exchanging heat between the liquid (E) and the refrigerant. The condenser (13) exchanges heat between the refrigerant and the air transported by the blower fan (16). The condenser (13) may be a water-cooled condenser that exchanges heat between water and the refrigerant.

[0046] The sludge recovery device (100) recovers sludge (G) from the liquid (E) (working fluid) stored in the tank (T) of the cooling device (1).

[0047] -Second example of use of the sludge recovery device- The sludge recovery device (100) is used in the hydraulic equipment (2). The hydraulic equipment (2) will be described with reference to Figure 6. As shown in Figure 6, the hydraulic equipment (2) includes a hydraulic pump (21) that sends hydraulic fluid stored in a tank (T) to the main machine, a motor that drives the hydraulic pump (21), a housing (23) that covers the components of the hydraulic equipment (2), etc. In Figure 6, the motor is located in a place covered by the housing (23). The hydraulic equipment (2) is used in equipment (main machines) such as injection molding machines, presses, and machine tools, and operates the main machine by sending hydraulic fluid from the tank (T) to the main machine by the hydraulic pump (21).

[0048] The sludge recovery device (100) recovers sludge (G) from the liquid (E) (hydraulic oil) stored in the tank (T) of the hydraulic equipment (2).

[0049] -effect- As described above, the sludge recovery device (100) comprises a non-magnetic cylindrical portion (110), a magnet (120) provided inside the cylindrical portion (110) for adhering magnetic sludge (G) to the outer surface of the cylindrical portion (110) by magnetic force, a moving portion (130) for moving the magnet (120) inside the cylindrical portion (110), and a disconnecting portion (140) for disconnecting the magnet (120) moved by the moving portion (130) from the sludge (G) adhering to the outer surface of the cylindrical portion (110). According to the sludge recovery device (100), the moving part (130) moves the magnet (120), and the magnetic force of the magnet (120) moves the sludge (G) in the liquid (E) attached to the outer surface of the cylindrical part (110) to the outside of the liquid (E). Furthermore, the disconnecting part (140) disconnects the link between the magnet (120) and the sludge (G), suppressing the magnetic force acting on the sludge (G), thereby separating the sludge (G) from the outer surface of the cylindrical part (110) and recovering it. As a result, the amount of sludge (G) in the liquid (E) can be reduced.

[0050] -First modification of the sludge recovery device- As shown in Figure 7, the liquid-external portion (113) may include a first horizontal portion (113a). The first horizontal portion (113a) is the portion of the liquid-external portion (113) that extends horizontally. A separation portion (140) is provided on the outer surface of the first horizontal portion (113a). The separation portion (140) is formed in an annular shape along the circumferential direction of the first horizontal portion (113a) and protrudes radially from the outer surface of the first horizontal portion (113a) in a direction perpendicular to the cylindrical direction (X). This makes it easy to secure space for installing a container (Y) for collecting sludge (G) below the first horizontal portion (113a) and along the first horizontal portion (113a). As a result, as shown in Figure 8, when the movable part (130) is pulled to collect the sludge (G), the sludge (G) that falls from the detachment part (140) can be easily collected in the container (Y).

[0051] -Second modification of the sludge recovery device- As shown in Figure 9, the immersion portion (112) may include a second horizontal portion (112a). The second horizontal portion (112a) is the portion of the immersion portion (112) that extends horizontally. By arranging multiple magnets (120) in the second horizontal portion (112a) in a horizontal direction, the magnetic force of the magnets (120) can be applied to a region with a horizontal area in the liquid (E), thereby effectively adsorbing sludge (G) onto the outer surface of the second horizontal portion (112a).

[0052] -Third modification of the sludge recovery device- As shown in Figure 10, the sludge recovery device (100) comprises a cylindrical section (110), a magnet (120), a movable section (130), a detachment section (140), an outer cylindrical section (150), and a flange section (160). It also includes an immersion section (112), an external liquid section (113), and an insertion section (114).

[0053] The cylindrical portion (110) passes through a housing (30) that is positioned outside the liquid (E). In this embodiment, the cylindrical portion (110) passes through the housing (30) of equipment that operates on the liquid (E). Equipment that operates on the liquid (E) includes, for example, equipment that purifies the liquid (E) (removes sludge), equipment that pumps the liquid (E), equipment that adjusts the temperature of the liquid (E), equipment that adjusts the amount of the liquid (E), equipment that adjusts the composition of the liquid (E), etc. The housing (30) is, for example, the housing (11) of a cooling device (1) (see Figure 4), or the housing (23) of a hydraulic device (2) (see Figure 6).

[0054] As shown in Figures 10, 11(a), and 11(b), the housing (30) has holes (31a2, 31b1) that connect the inside and outside of the housing (30). The cylindrical portion (110) is inserted into the housing (30) through the holes (31a2, 31b1).

[0055] The cylindrical portion (110) includes an immersion portion (112), an external liquid portion (113), and an insertion portion (114). The cylindrical portion (110) has an insertion portion (114) positioned inside the housing (30), with the immersion portion (112) and the external liquid portion (113) protruding from the housing (30).

[0056] The immersion portion (112) is the part of the cylindrical portion (110) closer to the other end (110b), and is immersed in the liquid (E) in the tank (T). The immersion portion (112) is located below the housing (30). The immersion portion (112) is located, for example, inside the coil portion (15a).

[0057] The liquid-external portion (113) is the part of the cylindrical portion (110) closer to one end (110a) and exists outside the liquid (E) (in the atmosphere). The liquid-external portion (113) is positioned outside the housing (30) and is provided to protrude from the housing (30).

[0058] The insertion portion (114) is the part of the cylindrical portion (110) located between the immersion portion (112) and the liquid-external portion (113), and is placed inside the housing (30). The insertion portion (114) has a shape that is bent or curved at approximately a right angle.

[0059] The liquid-external portion (113) includes a first horizontal portion (113a). The first horizontal portion (113a) is the portion of the liquid-external portion (113) that extends horizontally.

[0060] As shown in Figures 10 and 12(a), the separation portion (140) is provided on the outer surface of the first horizontal portion (113a).

[0061] As shown in Figures 10, 11(a), 11(b), and 12(b), the outer cylinder portion (150) is a cylindrical member having openings (151, 152) at both ends. The cylindrical portion (110) is inserted through the openings (151, 152) of the outer cylinder portion (150). The outer cylinder portion (150) and the cylindrical portion (110) constitute a double tube. The opening (151) at one end of the outer cylinder portion (150) is located below the lower surface (31a) of the housing (30). The opening (152) at the other end of the outer cylinder portion (150) communicates with a hole (31b1) on the side surface (31b) of the housing (30).

[0062] In the following, the space between the outer cylinder portion (150) and the cylindrical portion (110) may be referred to as the passage (170).

[0063] The outer cylinder portion (150) is inserted into the housing (30) through a hole (31a2) in the lower surface (31a) of the housing (30). The outer cylinder portion (150) includes a first outer cylinder portion (153) and a second outer cylinder portion (154). The first outer cylinder portion (153) is located inside the housing (30) and covers the insertion portion (114) of the cylinder portion (110). The second outer cylinder portion (154) is located outside the housing (30) and covers the portion of the cylinder portion (110) that extends from the insertion portion (114) toward the immersion portion (112).

[0064] As shown in Figures 10 and 12(b), the flange portion (160) is provided on the outer surface of the second outer cylinder portion (154) and has a shape that protrudes outward from the outer surface of the second outer cylinder portion (154). The flange portion (160) is an annular shape formed along the circumferential direction of the second outer cylinder portion (154) and is a plate-shaped member that protrudes radially from the outer surface of the second outer cylinder portion (154) in a direction perpendicular to the cylindrical direction (X).

[0065] The procedure for recovering sludge (G) from liquid (E) using a sludge recovery device (100) will be described below.

[0066] As shown in Figure 10, when the immersion portion (112) of the cylindrical portion (110) is immersed in liquid (E), the liquid-external portion (113) is placed in the atmosphere outside the liquid (E), and a magnet (120) is placed inside the immersion portion (112) of the cylindrical portion (110), the magnetic force of the magnet (120) causes sludge (G) in the liquid (E) to adhere to the outer surface of the immersion portion (112). The sludge (G) adheres to the area around the magnet (120) on the outer surface of the immersion portion (112). As a result, the sludge (G) is captured.

[0067] When the other end (132) of the movable part (130) is grasped and the movable part (130) is pulled, the magnet (120) inside the cylindrical part (110) moves to one side (X1) in the cylindrical direction (X). Consequently, the sludge (G) adhering to the outer surface of the cylindrical part (110) due to the magnetic force of the magnet (120) also moves to one side (X1) in the cylindrical direction (X).

[0068] As shown in Figure 13, the movable part (130) is pulled further, and the magnet moves to a point within the cylindrical part (110) where the cylindrical part (110) and the outer cylindrical part (150) form a double tube. As a result, the sludge (G) adhering to the outer surface of the immersion part (112) is driven by the magnetic force of the magnet (120) into the passage (170) through the opening (151) of the outer cylindrical part (150) and moves within the passage (170). At this time, any sludge (G) that does not enter the passage (170) gets stuck in the flange (160), which prevents it from moving towards the housing (30) and adhering to the lower surface (31a) of the housing (30). In addition, within the housing (30), as the sludge (G) moves through the passage (170) covered by the outer cylindrical part (150), it is prevented from leaking into the housing (30) and remaining inside the housing (30).

[0069] The movable part (130) is pulled further, and the magnet (120) moves to the location of the liquid-external area (113) within the cylindrical part (110). As a result, the sludge (G) that was moving within the passage (170) also comes out of the passage (170) through the opening (152) of the outer cylindrical part (150) and adheres to the outer surface of the liquid-external area (113).

[0070] As shown in Figure 14, when the moving part (130) is pulled further, the sludge (G), which was moving with the cylindrical part (110) due to the magnetic force of the magnet (120), gets stuck in the detachment part (140) and stops in the cylindrical direction (X), while the magnet (120) passes through the detachment part (140). As a result, the linkage between the magnet (120), which is moved by the moving part (130), and the sludge (G) attached to the outer surface of the cylindrical part (110) is broken. Consequently, the magnet (120) is separated from the sludge (G), and the magnetic force of the magnet (120) acting on the sludge (G) is suppressed.

[0071] The magnetic force of the magnet (120) acting on the sludge (G) is suppressed, causing the sludge (G) to fall from the separation section (140) by its own weight and be contained in the container (Y). As a result, the sludge (G) in the liquid (E) can be recovered, and the amount of sludge (G) in the liquid (E) can be reduced.

[0072] While embodiments and modifications have been described above, it will be understood that a variety of changes in form and details are possible without departing from the spirit and scope of the claims. Furthermore, the embodiments, modifications, and other embodiments described above may be combined or substituted as appropriate, as long as they do not impair the functions covered by this disclosure.

[0073] The designations "1st," "2nd," "3rd," etc., mentioned above are used to distinguish between the terms to which these designations are attached, and do not limit the number or order of those terms. [Industrial applicability]

[0074] As described above, this disclosure is useful for sludge recovery apparatus and sludge recovery method. [Explanation of Symbols]

[0075] 100 Sludge Recovery System 110 Cylinder part 112 Immersion section 113 External liquid 120 magnets 130 Mobile Unit 140 Separation section E liquid G Sludge

Claims

1. A non-magnetic cylindrical portion (110), A magnet (120) is provided inside the cylindrical portion (110) and causes sludge (G) to adhere to the outer surface of the cylindrical portion (110) by magnetic force, A movable part (130) for moving the magnet (120) within the cylindrical part (110), A disconnection part (140) disconnects the movement between the magnet (120) which is moved by the moving part (130) and the sludge (G) adhering to the outer surface of the cylindrical part (110). Equipped with, The cylindrical portion (110) includes a first horizontal portion (113a) extending along the horizontal direction, The separation section (140) is a sludge recovery device provided on the outer surface of the first horizontal section (113a).

2. A non-magnetic cylindrical portion (110), A magnet (120) is provided inside the cylindrical portion (110) and causes sludge (G) to adhere to the outer surface of the cylindrical portion (110) by magnetic force, A movable part (130) for moving the magnet (120) within the cylindrical part (110), A disconnection part (140) that disconnects the movement of the magnet (120) by the moving part (130) from the sludge (G) adhering to the outer surface of the cylindrical part (110), An outer cylindrical portion (150) that covers a part of the cylindrical portion (110) and Equipped with, The cylindrical portion (110) passes through the housing (30) which is placed outside the liquid (E), The outer cylindrical portion (150) covers the portion of the cylindrical portion (110) that is located inside the housing (30), and is a sludge recovery device.

3. A non-magnetic cylindrical portion (110), A magnet (120) is provided inside the cylindrical portion (110) and causes sludge (G) to adhere to the outer surface of the cylindrical portion (110) by magnetic force, A movable part (130) for moving the magnet (120) within the cylindrical part (110), A disconnection part (140) disconnects the movement between the magnet (120) which is moved by the moving part (130) and the sludge (G) adhering to the outer surface of the cylindrical part (110). Equipped with, The movable part (130) includes a string-like member connected to the magnet (120) and extending to the outside of the cylindrical part (110) through an opening (111) formed in the cylindrical part (110). A sludge recovery device in which the movement path of the magnet (120) within the cylindrical portion (110) has a curved shape.

4. The sludge recovery apparatus according to claim 1 or claim 2, wherein the movable part (130) is connected to the magnet (120) and includes a string-like member that extends to the outside of the cylindrical part (110) through an opening (111) formed in the cylindrical part (110).

5. The separation portion (140) has a shape that protrudes outward from the outer surface of the cylindrical portion (110). A sludge recovery apparatus according to any one of claims 1 to 3.

6. A sludge recovery device according to any one of claims 1 to 3, wherein the magnet (120) is moved by the moving part (130) in the direction (X) in which the cylindrical portion (110) extends, such that the magnet (120) passes through the disconnecting portion (140), thereby disconnecting the linkage between the magnet (120) moved by the moving part (130) and the sludge (G) adhering to the outer surface of the cylindrical portion (110).

7. The sludge recovery apparatus according to any one of claims 1 to 3, wherein the magnet (120) has a spherical shape.

8. Within the cylindrical portion (110), a plurality of the magnets (120) are arranged along the direction (X) in which the cylindrical portion (110) extends. The sludge recovery apparatus according to claim 7, wherein the movable part (130) is connected to at least one of the plurality of magnets (120) so that the plurality of magnets (120) move together as a single unit.

9. The cylindrical portion (110) includes a second horizontal portion (112a) extending horizontally, and the end portion (110b) is immersed in the liquid (E). The sludge recovery apparatus according to any one of claims 1 to 3, wherein the second horizontal portion (112a) is located near the end portion (110b) of the cylindrical portion (110).

10. The outer cylinder portion (150) includes an outer cylinder portion (154) that protrudes to the outside of the housing (30), The sludge recovery device according to claim 2, wherein the outer cylindrical portion (154) is provided with a flange portion (160) that protrudes outward from the outer surface of the outer cylindrical portion (154).

11. A step in which a part of a non-magnetic cylindrical portion (110), which is an immersion portion (112), is immersed in a liquid (E), another part of the cylindrical portion (110), which is an external portion (113), is placed outside the liquid (E), a magnet (120) is placed inside the immersion portion (112), and the magnetic force of the magnet (120) causes sludge (G) in the liquid (E) to adhere to the outer surface of the immersion portion (112), With the immersion portion (112) immersed in the liquid (E), the magnet (120) is moved from the location of the immersion portion (112) inside the cylindrical portion (110) to the location of the outside of the liquid (113), thereby moving the sludge (G) adhering to the outer surface of the immersion portion (112) to the outer surface of the outside of the liquid (113). A step of disconnecting the interlock between the moving magnet (120) and the sludge (G) adhering to the outer surface of the cylindrical portion (110) outside the liquid (E), A step of recovering sludge (G) outside the liquid (E) and Includes, A string-like member is connected to the magnet (120) through an opening (111) formed in the cylindrical portion (110) to the outside of the cylindrical portion (110). A sludge recovery method wherein the movement path of the magnet (120) within the cylindrical portion (110) has a curved shape.

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