JP2010058175A - Effluent purification device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an effluent purification device in an extremely compact form, efficiently separating and eliminating foreign matters without using any filtering medium. <P>SOLUTION: The effluent purification device comprises: a first settling tank 1 to precipitate the foreign substance S while draining the effluent D downward; a second settling tank 2 to precipitate the foreign substance while draining the effluent upward; a connection portion 3 connecting a lower side of the first settling tank and a lower side of the second settling tank; and an attraction means 4 disposed in the connection portion 3 to magnetically attract foreign matters in the effluent flowing through the connection portion 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a waste liquid purification apparatus that separates and removes foreign substances from waste liquid such as coolant used in machine tools, for example.

  Conventionally, as a waste liquid purification device that separates and removes foreign matters such as chips and sludge from waste liquid such as coolant used in machine tools such as grinders, a filtration method using a filter has been proposed. (For example, see Patent Documents 1 and 2 below).

However, this filtration-type waste liquid purification apparatus cannot avoid the problem of clogging of the filter, and it is necessary to frequently perform the filter replacement work, which takes time and increases the running cost.
JP-A-3-213269 Japanese Patent Laid-Open No. 8-299717

  The present invention has been made in view of the above-mentioned drawbacks in the conventional filtration-type waste liquid purification apparatus, and can efficiently separate and remove foreign substances without using a filter medium such as a filter. An object is to provide an extremely compact waste liquid purification device that can be used.

  The present invention is a waste liquid purification apparatus for separating and removing foreign matter from waste liquid, a first sedimentation tank that precipitates foreign matter while flowing the waste liquid downward, a second precipitation tank that precipitates foreign matter while flowing the waste liquid upward, Connecting the lower side of the first settling tank and the lower side of the second settling tank, and connecting the waste liquid of the first settling tank to the second settling tank; And a magnetizing means for magnetizing foreign matter in the waste liquid flowing through the connecting portion.

  In the present invention, the magnetic attachment means includes a horizontal shaft that can be driven and rotated, a plurality of arms provided radially on the horizontal shaft, magnetic attachment portions provided on the arms, and the magnetic attachments. And a scraper that scrapes off foreign matter magnetized on the part.

  Further, the present invention is characterized in that the second sedimentation tank is formed so that its cross-sectional area increases as it goes from the lower part to the upper part.

  Further, the present invention is characterized in that a second magnetizing means for magnetizing foreign substances in the waste liquid on the upper side of the second sedimentation tank is disposed on the upper side of the second sedimentation tank. .

  Further, according to the present invention, the second magnetizing means scrapes off a foreign shaft magnetized on the magnetized portion, a longitudinal shaft that can be driven and rotated, a magnetized portion that is provided horizontally on the longitudinal shaft, and the magnetized portion. And a scraper.

  In the waste liquid purifying apparatus according to the present invention, the magnetizing means is disposed at a connecting portion that connects the lower side of the first settling tank and the lower side of the second settling tank. Therefore, after depositing and removing relatively large foreign matters in the first sedimentation tank, foreign matters that can be magnetically attached by the magnetic attaching means can be magnetically removed, and foreign matters can be efficiently separated and removed from the waste liquid. Moreover, since relatively large foreign matter is precipitated in the first sedimentation tank in advance, the amount of foreign matter magnetically adhered by the magnetic means can be reduced, and this magnetic means can be reduced in size, and the waste liquid purification device can be further reduced. It can be configured compactly.

  As shown in FIG. 1, the waste liquid purification apparatus 10 of the present embodiment mainly includes a first precipitation tank 1 that precipitates foreign matters while flowing the waste liquid downward, and a second precipitation tank 2 that precipitates foreign matters while flowing the waste liquid upward. The first precipitation tank 1 and the second precipitation tank 2 are connected to each other, the connecting part 3 for flowing the waste liquid from the first precipitation tank 1 to the second precipitation tank 2, and the foreign matter in the waste liquid flowing through the connecting part 3 is magnetized. The first magnetizing means 4 for attaching and the second magnetizing means 5 for magnetizing foreign substances in the waste liquid on the upper side of the second sedimentation tank 2 are constituted. Hereinafter, each component will be described in detail with reference to the drawings.

  As shown in FIG. 1, the first sedimentation tank 1 is provided with a waste liquid introduction port 11 at an upper portion thereof, and a waste liquid D such as used coolant is introduced from the outside through the waste liquid introduction port 11. In the first sedimentation tank 1, a plurality of rectifying plates 12 made of a wire mesh having a number of openings of about 1 mm square are arranged vertically so that the waste liquid D is rectified so as to flow downward as a whole. And the lower part of the 1st sedimentation tank 1 is provided with the discharge port 13 for discharging | emitting the foreign material S settled in the 1st sedimentation tank 1 outside.

  As shown in FIG. 1, the second sedimentation tank 2 is provided with a purification liquid outlet 21 at the top thereof, and the purified liquid C purified in the second precipitation tank 2 is externally passed through the purification liquid outlet 21. Overflow to. The 2nd sedimentation tank 2 of this embodiment is formed in the shape which the upper part side expanded so that the cross-sectional area may expand as it goes to the upper part from the lower part. A rectifying plate 22 made of a wire mesh having a number of openings of about 1 mm square is disposed in the middle part of the second settling tank 2. The lower part of the second sedimentation tank 2 communicates with the lower part of the first sedimentation tank 1 through the opening 23, and the foreign matter S precipitated in the second sedimentation tank 2 is discharged to the outside from the discharge port 13. be able to.

  The connecting part 3 connects the lower side of the first settling tank 1 and the lower side of the second settling tank 2. In the present embodiment, the first settling tank 1 and the second settling tank 2 are separated by a partition wall 31, and the connecting portion 3 is configured by an opening 32 opened on the lower side of the partition wall 31. As a result, the waste liquid introduced through the waste liquid introduction port 11 and flowing downward through the first precipitation tank 1 flows laterally into the second precipitation tank 2 through the opening 32. Then, the waste liquid that has flowed into the second sedimentation tank 2 flows upward in the second sedimentation tank 2, and flows out from the purification liquid outlet 21 to the outside as the purification liquid C.

  As shown in FIGS. 1 and 2, the first magnetizing means 4 is disposed in the opening 32 of the connecting portion 3. The first magnetizing means 4 of the present embodiment is horizontally supported along the opening 32 and is driven by a motor (not shown) and rotated by six along the axial direction of the horizontal shaft 41. , A plurality of arms 42 projecting radially in six directions, a total of six magnetized portions 43 provided at the tip of the arm 42 in each direction and provided with rod-like permanent magnets, and each magnetized portion And a scraper 44 that scrapes off the foreign matter magnetically attached to 43.

  As shown in FIG. 2, the first magnetizing means 4 has a waste liquid between the plurality of magnetized portions 43, between the magnetized portions 43 and the horizontal shaft 41, and between the plurality of arms 42. There is enough space to circulate. Accordingly, the foreign matter in the waste liquid can be efficiently adsorbed by the magnetic force of the magnetized portion 43 while flowing the waste liquid from the first precipitation tank 1 to the second precipitation tank 2 through the connecting portion 3. The scraper 44 fixed to the partition wall 31 comes into contact with the magnetized portion 43 that continuously rotates at 2 revolutions / minute (see the white arrow in FIG. 2), and is magnetized on each magnetized portion 43. The foreign matter is scraped off by the scraper 44. The scraped foreign matter is magnetized and collected in the liquid while being collected in the lower part of the first sedimentation tank 1 or the second sedimentation tank 2, and is discharged to the outside from the discharge port 13.

  The second magnetizing means 5 is disposed on the upper side of the second settling tank 2 as shown in FIGS. The second magnetic adhesion means 5 of the present embodiment is fixed in the tank of the second sedimentation tank 2, and includes a partition plate 51 having a circular opening 510 in the center and a frame body 52 fixed on the partition plate 51. A vertical shaft 54 that is axially supported in the vertical direction and is driven and rotated by a motor 53, a magnetized portion 55 provided horizontally on the vertical shaft 54, and a scraper 56 that scrapes off foreign matter magnetized on the magnetized portion 55. And a discharge path 57 fixed to the second settling tank 2 below the scraper 56. The magnetized portion 55 is fixed to the lower portion of the vertical shaft 54, has a plurality of flow openings 550 through which waste liquid can flow, and rotates in a state of being fitted to the circular openings 510 of the partition plate 51. A plate 551 and a total of eight rod-shaped permanent magnets 552 fixed radially on the upper surface of the support plate 551 are configured.

  As shown in FIG. 4, the second magnetizing means 5 has a plurality of flow openings 550 in the support plate 551 of the magnetized part 55. Therefore, foreign substances in the waste liquid can be efficiently adsorbed by the magnetic force of the magnetized portion 55 while flowing the waste liquid to the upper portion of the second sedimentation tank 2 through the circulation openings 550. Then, the scraper 56 fixed to the second sedimentation tank 2 is brought into contact with the magnetized portion 55 that continuously rotates at a rate of 1 rotation / minute (see the white arrow in FIG. 3) through the discharge path 57, so that the magnetic The foreign matter magnetically attached to the attachment portion 55 is scraped off by the scraper 56. The foreign matter thus scraped off is magnetized and gathers together in the liquid, passes through the discharge path 57 and settles down to the lower part of the second settling tank 2, and is discharged from the discharge port 13 to the outside. In the present embodiment, the flow opening 550 of the support plate 551 is formed in a substantially V shape so that the waste liquid passes through the vicinity of each permanent magnet 552.

  Hereinafter, the waste liquid purification work by the waste liquid purification apparatus 10 of the present embodiment will be described with reference to FIG. Here, an example will be described in which used coolant containing foreign matter such as chips and sludge is purified as waste liquid D, which is used in a machine tool such as a grinding machine.

  First, the waste liquid D to be purified is introduced into the first precipitation tank 1 through the waste liquid inlet 11. Then, the introduced waste liquid D is rectified by the rectifying plate 12, and relatively large foreign matters such as chips in the waste liquid D are precipitated while flowing downward in the first sedimentation tank 1.

  Next, while the waste liquid in the first sedimentation tank 1 flows laterally to the second sedimentation tank 2 through the connecting portion 3, foreign matter such as magnetized powder in the waste liquid is magnetized by the first magnetizing means 4. Then, the magnetically adhered foreign matter is scraped off by the scraper 44 and precipitated in the lower part of the first precipitation tank 1 or the second precipitation tank 2.

  Next, a relatively small foreign substance such as sludge in the waste liquid is precipitated while the waste liquid that has passed through the first magnetizing means 4 is slowly flowed upward in the second sedimentation tank 2 in which the upper part spreads.

  Then, while the waste liquid flowing upward in the second sedimentation tank 2 is further flowed to the upper part of the second sedimentation tank 2, foreign substances such as sludge that can be magnetized in the waste liquid are magnetized by the second magnetizing means 5. The magnetically adhered foreign matter is scraped off by the scraper 56 and is deposited in the lower part of the second sedimentation tank 2 through the discharge path 57. Then, the cleaning liquid C purified by the separation and removal of foreign matters is caused to overflow from the cleaning liquid outlet 21 to the outside. Thereafter, the cleaning liquid C is reused in the machine tool.

  As described above, the waste liquid purification apparatus 10 according to the present embodiment includes the first magnetizing means 4 disposed in the connecting portion 3 that connects the lower side of the first sedimentation tank 1 and the lower side of the second sedimentation tank 2. Yes. Therefore, after depositing and removing relatively large foreign matters (including both foreign matter that can be magnetized and foreign matter that is not magnetized) in the first sedimentation tank 1, foreign matter that can be magnetized is removed by the first magnetizing means 4. It can be magnetized and foreign substances can be efficiently separated from the waste liquid.

  In addition, since a relatively large foreign matter is precipitated in the first sedimentation tank 1 in advance as described above, the amount of foreign matter adhered by the first magnetic attachment means 4 can be reduced, and the first magnetic attachment means can be reduced. 4 can be reduced in size, and the waste liquid purification apparatus can be configured more compactly.

  In addition, since the amount of foreign matter magnetized by the first magnetizing means 4 can be reduced, the amount of foreign matter scraped off by the scraper 44 can be reduced, and the rotational speed of the magnetized portion 43 can be further reduced. it can. Accordingly, the rotating operation of the magnetized portion 43 agitates the waste liquid in the first precipitation tank 1 and the second precipitation tank 2 and does not hinder the precipitation of foreign matters in each precipitation tank. The waste liquid purification apparatus 10 according to the present embodiment gently rotates the magnetized portion 43 of the first magnetizing means 4 to efficiently perform sediment removal by the first sedimentation tank 1 and the second sedimentation tank 2, The coexistence with the efficient magnetic removal by the single magnetic attachment means 4 is realized.

  Furthermore, the waste liquid purification apparatus 10 according to the present embodiment scrapes off the foreign matter magnetically attached to the magnetized portion 43 with the scraper 44 in the waste liquid. Therefore, after the foreign matter magnetized by the magnetized portion 43 is scraped off by the scraper 44, it becomes easy to gather together in the waste liquid, and the precipitation to the lower part of the first sedimentation tank 1 can be promoted.

  Moreover, since the 2nd sedimentation tank 2 of the waste liquid purification apparatus 10 of this embodiment is formed so that the cross-sectional area may expand as it goes to the upper part from the lower part, the waste liquid of the 2nd sedimentation tank 2 is from the lower part. The more it flows upward, the smaller the flow velocity. As a result, relatively small foreign matters can be efficiently removed by precipitation.

  Further, the waste liquid purification apparatus 10 of the present embodiment has the second magnetizing means 5 disposed on the upper side of the second sedimentation tank 2. Therefore, the foreign matter that can be magnetized can be removed by being magnetically shared by the first magnetic means 4 and the second magnetic means 5. This also makes it possible to reduce the size of the first magnetizing means 4 and provide a more compact waste liquid purification device.

  In the present embodiment, since the cross-sectional area of the upper part of the second sedimentation tank 2 is large, the second magnetizing means 5 for horizontally removing the magnetized portion 55 to remove the foreign matters is provided. It can be effectively disposed in the upper part of the two precipitation tanks 2. Therefore, the contact area between the magnetic adhering portion 55 of the second magnetic adhering means 5 and the waste liquid can be greatly increased without hindering the foreign substance precipitation in the second settling tank 2, and the foreign substances can be removed with high efficiency. can do.

  Moreover, since the waste liquid purification apparatus 10 of this embodiment has arrange | positioned the 1st magnetizing means 4 and the 2nd magnetizing means 5 in the tank of the 1st sedimentation tank 1 and the 2nd sedimentation tank 2. In addition, the waste liquid purification device can be remarkably downsized.

  The waste liquid purification apparatus 10 of the present embodiment has been described above, but the present invention can also be implemented in other forms.

  For example, in the said embodiment, the connection part 3 which connects the 1st sedimentation tank 1 and the 2nd sedimentation tank 2 is opened by the opening part 32 opened in the partition 31 which separates the 1st sedimentation tank 1 and the 2nd sedimentation tank 2. Although it comprises, this invention is not limited to this at all, You may comprise this connection part 3 with the pipe material which connects the 1st sedimentation tank 1 and the 2nd sedimentation tank 2. FIG. Moreover, in the said embodiment, although the permanent magnet is used for the magnetized part of the magnetizing means, you may use an electromagnet.

  In addition, the present invention can be carried out in a mode in which various improvements, modifications and variations are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention. It may be implemented in a form in which any invention specific matter is replaced with another technology within a range where the same action or effect occurs, or the invention specific matter configured integrally may be constituted by a plurality of members. In addition, the invention specific items constituted by a plurality of members may be implemented in an integrated configuration.

It is a partially broken side view of the waste liquid purification apparatus of this embodiment. It is a principal part expansion perspective view of the 1st magnetizing means of the waste-liquid purification apparatus of this embodiment. It is a principal part expansion perspective view of the 2nd magnetizing means of the waste-liquid purification apparatus of this embodiment. It is a principal part enlarged view of the 2nd magnetizing means of the waste liquid purification apparatus of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Waste liquid purification apparatus 1 1st sedimentation tank 2 2nd sedimentation tank 3 Connection part 4 Magnetic adhesion means 41 Horizontal shaft 42 Arm 43 Magnetic adhesion part 44 Scraper 5 Second magnetic adhesion means 51 Vertical shaft 55 Magnetic adhesion part 56 Scraper D Waste liquid C Purification liquid S Foreign matter

Claims (5)

A waste liquid purification device for separating and removing foreign substances from waste liquid,
A first sedimentation tank that precipitates foreign matter while flowing the waste liquid downward;
A second sedimentation tank that precipitates foreign matter while flowing the waste liquid upwards;
Connecting the lower side of the first settling tank and the lower side of the second settling tank, and a connecting part for flowing waste liquid of the first settling tank to the second settling tank;
A magnetizing means disposed in the connecting portion and magnetizing foreign matter in the waste liquid flowing through the connecting portion;
A waste liquid purification device comprising: The magnetizing means is
A horizontal shaft that can be driven and rotated;
A plurality of arms provided radially on the horizontal shaft;
A magnetized portion provided on each arm;
A scraper that scrapes off the foreign matter magnetized to each magnetized part;
The waste liquid purification apparatus according to claim 1, further comprising:   The waste liquid purification device according to claim 1 or 2, wherein the second sedimentation tank is formed so that a cross-sectional area thereof increases from a lower part toward an upper part.   The second magnetizing means for magnetizing the foreign matter in the waste liquid on the upper side of the second sedimentation tank is disposed on the upper side of the second sedimentation tank. The waste liquid purification apparatus as described. The second magnetizing means is
A vertical shaft that can be driven and rotated;
A magnetized portion provided horizontally on the longitudinal shaft;
A scraper that scrapes off foreign matter magnetized to the magnetized part;
The waste liquid purification apparatus according to claim 4, further comprising:

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