JPH05269308A - Equipment for clarifying and circulating liquid - Google Patents

Abstract

PURPOSE:To circulate clarified water while removing dust and a foreign matter such as a chip which are contained in used liquid. CONSTITUTION:The inside of a circulation tank 1 is partitioned into a plurality of chambers 4, 5 by a partition 2. A plurality of pores 7 are provided in the partition 2. Dirty liquid 3 containing dust and a foreign matter such as a chip is supplied to the chamber 4 through a dirty liquid feed pipe 8. Dirty liquid 3 in the chamber 4 is passed through the pores 7 of the partition 2 and flows into the chamber 5. At this time, the foreign matter in dirty liquid 3 is not passed through the pores 7 and remains in the chamber 4 as precipitate 11. The clarified liquid wherein the foreign matter has been removed flows into the chamber 5. The clarified liquid in the chamber 5 is sucked by a liquid feed pump 10 and sent to a working part through a liquid feed pipe 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid cleaning / circulating apparatus for removing foreign matters such as water, dust and chips contained in a used liquid and supplying the cleaned liquid again to a processing section.

[0002]

2. Description of the Related Art Conventionally, an overflow system or a combination of overflow and underflow systems has been used for a circulation system in which a circulation tank is divided into a plurality of precipitation chambers by partition walls and liquids are sequentially passed through the precipitation chambers to clean the liquids. There is. Figure 7 shows the new technology for lens prism fabrication (Chuo Kagaku, 7/48
1st month, 2nd edition issued), showing an overflow type coolant tank 40. Inside the tank 40, a separator 41 is provided so as to have a space in the upper part, from the first chamber to the fourth chamber 42, 43. , 44, 45 precipitation chambers. Then, the used grinding fluid carried by the drain pipe 46 provided above the first chamber 42 is
Foreign substances such as glass chips are precipitated in the first chamber and enter the second chamber 43. Thereafter, while precipitating the glass chips, the third chamber 44,
The fourth chamber (final chamber) 45 enters the grinding liquid 4 which is almost cleaned.
7 is a coolant pump 48 provided above the fourth chamber 45.
Is again conveyed to the grinding surface via the supply port 49. FIG. 8 shows an oil circulation device 5 of a combination type of overflow and underflow described in Japanese Patent Publication No. 61-2626.
In the circulation tank 51, four partition walls 52 are provided so as to alternately have upper and lower spaces, and three precipitation chambers 5 are provided.
3, 54, 55 are formed. And the precipitation chamber 53
The oil enters from the oil inlet 56 provided above the sedimentation chamber 53, 5
Oil 57 that has passed through 4, 55 in order to settle foreign substances such as dust
Is sucked out by the pump 58 provided above the precipitation chamber 55, and is again supplied to the processing section through the supply port 59.

[0003]

However, according to the above-mentioned overflow method, the foreign matter which is about to be precipitated is agitated by the flow velocity of the grinding fluid 47 and is allowed to flow into the next precipitation chamber. Furthermore, when foreign matter is contained in the bubbles generated at the time of inflow, the foreign matter flows into the next precipitation chamber together with the bubbles. In addition, the combination of overflow and underflow makes it less likely that the foreign matter contained in the bubbles will flow into the next settling chamber due to the underflow portion, but will settle due to the flow rate of the oil 57 or stir the foreign matter that is about to settle. And flow into the next settling chamber. As described above, both of the conventional methods have a problem that the original purpose, that is, separation and cleaning cannot be performed sufficiently because foreign matter such as water, dust, and chips contained in the liquid is not supplied to the processing portion. .. The present invention has been made in view of the above-mentioned problems of the prior art, and a liquid cleaning / circulating apparatus capable of separating and removing foreign matter such as water, dust, and cutting chips from a liquid supplied to a processing section easily and inexpensively and reliably. The purpose is to provide.

[0004]

In order to achieve the above object, the liquid cleaning and circulating apparatus of the present invention is provided with a partition 2 in a circulation tank 1 as shown in the conceptual diagram of FIG. The first chamber 4 into which the sewage 3 containing foreign matters such as bubbles and dust is injected
And a second chamber 6 in which the cleaning liquid 5 is stored. Partition 2
A plurality of pores 7 that connect the first chamber 4 and the second chamber 6 are formed in the inner wall of the inner wall to block passage of foreign matter contained in the waste liquid 3. The size of the pores 7 is preferably less than 0.5 mm because the size of the bubbles contained in the waste liquid 3 is about 0.5 mm. On the circulation tank 1, there is provided a lid 9 having a hole 9a for arranging the contaminated liquid supply pipe 8 and a hole 9b for arranging a liquid feed pump 10 for feeding the cleaning liquid 5. There is. The hole 9a is provided on the first chamber 4, and the liquid supply pipe 8 is introduced into the first chamber 3 from the outside through the hole 9a. On the other hand, the hole 9b is provided on the second chamber 6, and the liquid suction port of the liquid feed pump 10 is introduced into the second chamber 6 through the hole 9b.

[0005]

According to the above construction, the sewage liquid 3 transfers the sewage liquid supply pipe 8
And enters the first chamber 4 of the circulation tank 1. Sewage introduced 3
Due to the head difference between the first chamber 4 and the second chamber 6, etc.
It tries to pass through the pores 7 of the partition wall 2 in order to enter. At this time, foreign matters such as air bubbles and dust contained in the waste liquid 3 are blocked by the pores 7 and separated. That is, foreign matter larger than the pores 7 remains as a precipitate 11 in the first chamber 4, and the bubbles float and stick to each other to form a large bubble 12 (see FIG. 2).
(See) and remains in the first chamber 4. Therefore, foreign matters such as bubbles and dust do not flow into the second chamber 6 and the cleaned liquid 5
Accumulates in the second chamber 6. Then, the cleaning liquid 5 accumulated in the second chamber 6 is sucked by the liquid feeding pump 10 and is supplied to the processing section by the liquid feeding pipe 13 provided in the liquid feeding pump 10.

[0006]

[Embodiment 1] FIG. 3 is a sectional view showing a liquid cleaning and circulating apparatus according to Embodiment 1 of the present invention. In the figure, 15 is a circulation tank for cleaning the waste liquid 3 into the cleaning liquid 5, and the partition wall 1 is provided in the circulation tank 15.
6 and partition plates 17, 18, and 19 are provided, and the circulation tank 1
The inside of 5 is the first chamber 20 and the second chamber 2 from the right side in the drawing.
1, the third chamber 22, the fourth chamber 23 and the fifth chamber 24 are divided. In the partition wall 16 that partitions the first chamber 20 and the second chamber 21,
A plurality of pores 25 for pouring the waste liquid 3 in the first chamber 20 into the second chamber 21 are opened. On the other hand, from the second chamber 21 to the fifth
The partition plates 17, 18, 19 for partitioning the chamber 24 are not provided with pores, and the partition plates 17, 18, 1 are not provided.
Liquid overflows from the upper surface of 9 and flows into the next chamber. Therefore, the height of the partition wall 16 is set to be substantially the same as the depth of the circulation tank 15 in order to prevent the overflow of the waste liquid 3, and the height of the partition plates 17, 18, 19 is the partition plate 17> the partition plate. The height difference is provided so that plate 18> partition plate 19.

On the circulation tank 15, there is placed a lid 9 on which a sewage liquid supply pipe 8 and a liquid supply pump 10 for supplying a cleaning liquid are arranged. The lid 9 is formed with holes 9a and 9b. The hole 9a is provided above the first chamber 20.
The drainage port of the sewage liquid sending pipe 8 is introduced from the outside into the upper part of the first chamber 20 and is disposed. On the other hand, the hole 9b is the fifth
It is provided above the chamber 24, and the liquid inlet of the liquid feeding pump 10 is inserted and inserted below the liquid surface of the fifth chamber 24 through the hole 9b. The liquid feed pump 10 is connected to a liquid feed pipe 13 that supplies the processing liquid with the clean liquid 5 sucked up from the fifth chamber 24.

Next, the operation of this embodiment will be described. Dirty liquid 3
When sewage is supplied to the first chamber 20 in the circulation tank 15 by the sewage liquid sending pipe 8, the sewage 3 passes through the pores 25 provided in the partition wall 16 and flows into the adjacent second chamber 21. At this time, the flow velocity of the waste liquid 3 flowing into the second chamber 21 is suppressed by the pores 25 and is decelerated. Foreign substances such as dust particles larger than the pores 25 contained in the waste liquid 3 are prevented from flowing into the second chamber 21 by the pores 25, and remain as the precipitate 11 in the first chamber. On the other hand, the waste liquid 3 sent through the waste liquid sending pipe 8
The bubbles contained therein and the bubbles generated when being supplied into the first chamber 20 do not flow into the second chamber 21 when they are larger than the pores 25. Therefore, foreign matter such as dust contained in the bubbles does not flow into the second chamber 21.

The liquid flowing into the second chamber 21 is the partition plate 1
7 overflows and flows into the adjacent third chamber 22. At this time, the flow velocity flowing into the third chamber 22 is suppressed, and the foreign matter that has passed through the holes 25 of the partition 16 is deposited in the second chamber 21. Then, the liquid flowing into the third chamber 22 overflows the partition plate 18 and flows into the adjacent fourth chamber 23. At this time, similarly to the above, the flow velocity flowing into the fourth chamber is suppressed, and the foreign matter flowing from the second chamber 21 becomes the third foreign substance.
Settles in chamber 22. Furthermore, the liquid that has flowed into the fourth chamber overflows the partition plate 19 and flows into the adjacent fifth chamber 24, which is the final chamber, while suppressing the flow velocity, and precipitates in the third chamber 23. By these steps, the fourth chamber 2
The purified liquid overflows from 3 to the fifth chamber 24, and the cleaning liquid 5 is accumulated in the fifth chamber 24. Then, the clean liquid 5 in the fifth chamber 24 is sucked by the liquid feed pump 10,
It is supplied to a required place through the liquid sending pipe 13.

According to this embodiment, by passing the dirty water 3 through the pores 25, it is possible to prevent large foreign matters and bubbles from flowing out of the first chamber 20. Further, the foreign matter that has passed through the pores 25 is
When the liquid overflows the second chamber 21, the third chamber 22 and the fourth chamber 23, the liquid is deposited in the chambers 21, 22 and 23, and the bubbles that are a problem in the overflow system are generated in the first chamber 20. Since the outflow is blocked, the waste liquid 3 can be efficiently cleaned.

[0011]

[Embodiment 2] FIG. 4 is a sectional view showing a liquid cleaning and circulating apparatus according to Embodiment 2 of the present invention. In the circulation tank 26 of this embodiment,
Partition walls 27, 28, 29, 30 are provided to divide the inside of the circulation tank 26 into the first chamber 20, the second chamber 21, the third chamber 22, the fourth chamber 23, and the fifth chamber 24 from the right side in the drawing. is there.
A plurality of pores 31, 32, 33, 34 are formed in each of the partition walls 27, 28, 29, 30. Pore 3
1, 32, 33 and 34 are partition walls 27, 28, 29 and 10 respectively.
Each of the pores 31 is formed to have a different size. One tenth of the pores 31 is the pore 32, one tenth of the pores 32 is the pore 33, and one tenth of the pores 33 is the pore 34. It is set to be large. The size of the pores 31 is about 1
About mm is desirable. In addition, each partition 27, 28, 29,
30 is provided such that its upper end is close to the lower surface of the lid 9 placed on the circulation tank 26. Similar to the first embodiment, the lid 9 is provided with the waste liquid sending pipe 8 and the liquid sending pump 10, the waste liquid sending pipe 8 is the first chamber 20, and the liquid sending pump 10 is the fifth chamber. 24 are provided at positions corresponding to each.

Next, the operation of this embodiment will be described. Dirty liquid 3
When the wastewater is supplied to the first chamber 20 in the circulation tank 26 by the wastewater delivery pipe 8, the wastewater 3 passes through the pores 31 provided in the partition wall 27 and flows into the adjacent second chamber 21. Hereinafter, similarly, the waste liquid 3 that has flowed into the second chamber 21 flows into the third chamber 22, the fourth chamber 23, and the fifth chamber 24 through the pores 32, 33, and 34, respectively. At this time, each partition 27, 28,
Since the pores 31, 32, 33 provided in 29, 30 are set to be gradually smaller, in the first chamber 20, the second chamber 21, the third chamber 22, and the fourth chamber 23 in order from the larger foreign matter. Remains as a precipitate 11 and bubbles. Then, in the fifth chamber 24, which is the final chamber, the clean liquid 5 that has passed through the pores 34 of the partition wall 30 is collected, sucked by the liquid feed pump 10 and supplied to the required location through the liquid feed pipe 13. The pores 3
The sizes of 1, 32, 33, and 34 can be changed depending on the size of the foreign matter, and thus the foreign matter of a desired size can be separated and removed.

According to the present embodiment, the size of the pores 31, 32, 33, 34 is gradually reduced in accordance with the flow of the waste liquid 3, so that the foreign substances such as dust contained in the waste liquid 3 are gradually reduced. Then, the purified cleaning liquid 5 flows into the fifth chamber 24. Further, the bubbles contained in the waste liquid 3 are gradually reduced, and only smaller bubbles are allowed to flow into the fifth chamber 24. Therefore, foreign matters such as dust contained in the bubbles are prevented from flowing into the fifth chamber 24.
The cleaned cleaning liquid 5 collects. Further, the pores 31, 3
Since the sizes of 2, 33, and 34 are changed to sequentially prevent passage of large foreign matter in stages, clogging is reduced, and the flow of the dirty liquid 3 and the clean liquid 5 becomes smooth.

[0014]

Third Embodiment FIGS. 5 and 6 show a liquid cleaning and circulating apparatus according to a third embodiment of the present invention, FIG. 5 is a sectional view, and FIG. 6 is a plan view with a lid removed. In the circulation tank 35 of this embodiment,
Cylindrical partition walls 36, 37, 38 having a gradually increasing diameter are provided concentrically, and the first chamber 20 and the second chamber 2 are arranged from the inside.
It is divided into 1, a third chamber 22 and a fourth chamber 23. Each partition wall 36, 37, 38 has a plurality of pores 31, 32,
33 is open. The sizes of the pores 31, 32, 33 are formed in the same manner as described in the second embodiment. Each partition wall 36, 37, 38 is provided so that its upper end is close to the lower surface of the lid 9 placed on the circulation tank 35. Lid 9
The liquid feed pump 1 corresponds to the fourth chamber 23, which is the final chamber.
0 is arranged, and a funnel-shaped straightening pipe 39 is arranged corresponding to the first chamber 20. Rectifying pipe 39
Has a large-diameter upper portion attached to the lid 9 and a lower end portion of the first portion
It extends below the chamber 20. In the large diameter portion of the flow straightening pipe 39, the drainage port of the waste liquid feed pipe 8 is provided. The shape of the flow straightening pipe 39 is not limited to the funnel shape, and a simple cylindrical shape can be used.

Next, the operation of this embodiment will be described. The waste liquid 3 discharged from the waste liquid supply pipe 8 to the flow straightening pipe 39 is
It is supplied into the first chamber 20 through the rectifying pipe 39. At this time, the flow of the sewage 3 flowing from the sewage liquid sending pipe 8 is adjusted by the rectifying pipe 39, and the inflowing air bubbles are suppressed. Waste liquid 3 supplied into the first chamber 20
Passes through the partition walls 36, 37, and 38, and goes from the first chamber 20 to the second chamber 20.
The chamber 21, the third chamber 22, and the final chamber, the fourth chamber 23, sequentially flow into the chamber. At this time, foreign matters such as air bubbles and dust contained in the waste liquid 3 are separated and removed by the small holes 31, 32, 33 provided in the partition walls 36, 37, 38 in the same manner as in the second embodiment, and cleaned. The cleaned liquid 5 thus collected is collected in the fourth chamber.

According to this embodiment, it is possible to obtain the same effect as that of the second embodiment. Further, the partition walls 36, 37, 3
Since 8 is formed in a cylindrical shape and arranged concentrically, space in each chamber can be suppressed and space can be saved.

The partition wall described in the above embodiment can be implemented by using a mesh-shaped one, so that it is possible to save the labor of opening pores in the partition wall one by one. In addition, the shape of the pores is formed into a polygon such as a triangle or a quadrangle or a round star, depending on the foreign matter to be separated and removed.
It can be changed and implemented. Further, the position of the pores provided in each partition can be changed by changing only the upper part or only the lower part or only the intermediate part depending on the conditions such as the size and specific gravity of the foreign matter to be separated and removed.

[0018]

As described above, according to the present invention, the air bubbles and foreign matter contained in the waste liquid are efficiently separated when the waste liquid passes through the pores provided in the partition walls. By passing through the pores, the flow rate of the sewage can be moderated, and the generation of bubbles and the stirring of precipitates can be suppressed, so that a clean liquid can be supplied. Further, since no power is used for separating and removing foreign matter, it is possible to easily and inexpensively provide an energy-saving and space-saving liquid cleaning circulation device.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a liquid cleaning and circulating apparatus of the present invention.

FIG. 2 is an explanatory diagram showing bubbles of waste liquid.

FIG. 3 is a cross-sectional view showing a first embodiment of the present invention.

FIG. 4 is a sectional view showing a second embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a third embodiment of the present invention.

FIG. 6 is a plan view showing a third embodiment of the present invention with a lid removed.

FIG. 7 is a cross-sectional view showing a conventional coolant tank.

FIG. 8 is a cross-sectional view showing a conventional oil circulation device.

[Explanation of symbols]

1, 15, 26, 35 Circulating tank 2, 16, 27, 28, 29, 30, 36, 37, 38
Partition wall 3 Waste liquid 5 Clean liquid 7, 25, 31, 32, 33, 34 Pore

Claims (1)

[Claims] 1. A liquid purifying circulation device for dividing a circulation tank into a plurality of chambers by partition walls and sequentially passing a fluid containing foreign matter through the chambers to clean the liquid, wherein the partition walls have pores for liquid passage. A liquid cleaning and circulating device characterized by being provided with.