JPH09262740A - Purifying equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a purifying device capable of eliminating both oil content and small dust by a single device. SOLUTION: An inclined plate 2 is arranged in a body 1 to form a zigzag flow passage 3, an oil flow passage 4 is formed on an upper end part of a rising flow passage 3a of the zigzag flow passage 3, a sediment flow passage 5 is formed on a lower end part of a descending flow passage 3b of the zigzag flow passage 3, a flow-out port of the purified liquid is provided on the downstream side of the zigzag flow passage 3, and a discharge port 13 of the sediment is provided on the upstream side of the zigzag flow passage 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purification apparatus for removing impurities from a liquid to be purified containing at least one of solid and liquid impurities to obtain a cleaned liquid to be purified.

[0002]

2. Description of the Related Art A water-soluble cleaning liquid or coolant is used in a processing line. However, if the liquid is brought in from the previous process or oil leaks from the machine such as lubricating oil in the machine, chips or threads There is a problem that small dust particles are mixed in. These degrade the performance of the liquid and therefore need to be removed and various devices are used. For example, Japanese Unexamined Patent Publication No. 4-122346 discloses a purifying device for purifying the cutting fluid by precipitating the cutting fluid downward with respect to the cutting fluid containing impurities such as cutting dust and elevating the cutting fluid upward in a cyclone state. Is disclosed.

[0003]

However, the conventional cyclone type purifying apparatus has a problem that if the liquid to be cleaned contains oil, the oil cannot be removed. Further, if the oil content is to be removed, an oil content removing device must be provided separately from the dust removing device, which causes an increase in the size of the device. Further, the cyclone type purification device has a problem that it is difficult to separate and remove dust, and if the filter type is more reliable for dust removal, the filter needs to be replaced regularly. An object of the present invention is to provide a purification device that can remove both dust and oil without using a separate device.

[0004]

The device of the present invention for achieving the above object is as follows. A plurality of inclined plates that are inclined in a hollow body at a distance from each other and that are arranged with an upper end and a lower end having a gap with the main body; and a liquid to be purified that is provided in the lower portion of the main body and contains impurities. A liquid to be purified supply device to be supplied into the main body, a precipitate discharge port provided in the lower part of the main body for discharging impurities precipitated in the lower part of the main body, and a purified liquid having an opening at the lower end side of the inclined plate in the upper part of the main body A purification device comprising: an outlet for letting out the liquid to be purified from the main body; and a floating material outlet for discharging impurities floating on the upper portion of the main body, which is open to the upper end side of the inclined plate on the upper portion of the main body.

In the purifying device of the present invention, when the liquid to be purified supplied from the liquid to be purified supply device flows between the plurality of inclined plates in the main body, impurities having a specific gravity lower than that of the liquid to be purified are on the upper end side of the inclined plate. After passing through the gap of the above, it floats up to the upper part of the main body and is then discharged from the floating material discharge port, and impurities with a specific gravity higher than that of the purification liquid pass through the gap on the lower end side of the inclined plate and settle down to the lower part of the main body. After settling, it is discharged from the sediment discharge port. The liquid to be purified from which the floating substances and the precipitates have been removed flows out from the outlet on the upper part of the main body. Thus, a single device can remove both floats and precipitates.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A purifying apparatus according to an embodiment of the present invention is shown in FIG.
As shown in FIG. 1, it has a main body 1 made of a hollow casing. Although the figure shows the case where the housing is cylindrical, it may have any shape such as a rectangular parallelepiped. In the main body 1, a plurality of inclined plates 2 are arranged at intervals from each other and inclined from the horizontal. The inclined plate 2 extends obliquely upward between the plates extending obliquely downward from the vertical wall of the main body 1 (in the illustrated example, it extends obliquely upward outward in the radial direction from the central portion of the main body 1). By disposing a plate between the upper end of the plate and the vertical wall of the main body 1 with a gap that forms a part of the flow path, the main body 1
A zigzag-shaped flow path 3 is formed therein.

The zigzag channel 3 has an ascending channel portion 3a and a descending channel portion 3b. In the zigzag flow path 3, an oil passage for passing oil upward by buoyancy is provided in the vicinity of the connecting portion between the inclined plate and the main body 1 immediately above the changing portion 3c from the ascending flow path portion 3a to the descending flow path portion 3b. 4 are formed. The oil passage 4 is, for example, a gap of about 1 to 3 mm formed between the upper end of the inclined plate 2 and the inner surface of the main body 1 when the inclined plate 2 is fixed to the main body 1 by spot welding. It may be provided with holes). An openable and closable sediment passage 5 for allowing the sediment to pass by its own weight is provided on the inclined plate immediately below the changing portion 3d in the zigzag-like flow passage 3 from the descending passage portion 3b to the ascending passage portion 3a. Are formed. The sediment passage 5 is opened and closed by moving a support rod 7 having a valve body 6 for opening and closing the sediment passage 5 up and down by a drive cylinder 8 or the like (a mechanism in which the rotation of a motor is converted into vertical movement may be used).

The liquid to be purified supply device has a supply port 9 which is opened in a portion upstream of the zigzag-shaped flow path 3 of the main body 1, and from the supply port 9 a solid (a substance 19 such as chips that precipitates),
A liquid to be purified 10 (cleaning liquid, coolant, etc.) containing at least one impurity of liquid (oil 18 or the like) is supplied into the main body 1. An outlet 11 is provided in a portion of the main body 1 on the downstream side of the zigzag-shaped flow path 3 to let the purified liquid to be purified flow out from the main body 1. Further, an oil discharge port 12 is provided at a portion of the main body 1 downstream of the zigzag flow path 3 and away from the liquid to be purified outlet 11. Oil outlet 12
Is preferably provided directly above the oil passage 4. The main body 1 has a ceiling wall that is inclined obliquely upward from the central portion toward the outer peripheral portion, and the liquid to be purified outlet 1 is provided at the central portion of the ceiling wall.
1 is provided, and the oil discharge port 12 is provided at the outer peripheral portion of the ceiling wall. On the other hand, a sediment discharge port 13 is provided in a portion of the main body 1 located below the sediment passage 5. Desirably, the main body 1 has a tapered bottom wall, and the sediment discharge port 13 is provided at the lowermost portion thereof. The deposit discharge port 13 is provided with a valve 14 that opens and closes the deposit discharge port 13.

The purification liquid supply device selectively flows a tank 15 containing the purification liquid and a liquid containing oil and fine dust floating in the purification liquid in the tank 15, the tank 15
The float device 16 floated on the liquid to be purified inside, and the liquid to be purified from the float device 16 is sent to the supply port 9 and the main body 1
A pump 17 (or a vacuum device may be used for suction or a tank 15 may be placed at a high place to allow the liquid to flow down by its own weight).

Next, the purifying action will be described. Since oil and minute dust easily float on the surface of the liquid, the float device 16 selectively causes the liquid near the surface containing a large amount of oil and minute dust among the liquids to be cleaned in the tank 15 to supply the liquid to be purified. It is sent to the mouth 9 and supplied into the main body 1. This improves the cleaning efficiency.

The liquid to be cleaned flowing from the supply port 9 into the main body 1 flows in the zigzag flow path 3 along the inclined plate 2. At this time, since the oil particles 18 are light, they are collected in the changing portion 3c (located on the outer peripheral portion in the main body 1) from the ascending flow path portion 3a to the descending flow path portion 3b, and are provided on the inclined plate 2 immediately above it. The oil passes through the oil passage 4 and floats upward along the inner wall surface of the main body 1 and sticks to other oil particles to become coarse particles (size increase of particles), and this is repeated up to the uppermost flow path. After that, the oil is selectively discharged from the oil discharge port 12 above the oil passage 4.

On the other hand, the fine dust has a property of settling, and its precipitate (sedimentation) 19 is settled on the changing portion 3d from the descending flow path portion 3b to the ascending flow path portion 3a, and on the inclined plate 2 immediately below it. When the provided sediment passage 5 is opened, it passes through the sediment passage 5 and moves downward, and this is repeated up to the lowermost passage, and then discharged from the sediment discharge port 13. The purified liquid to be purified from which the oil content and the precipitate have been removed flows out from the outlet 11.

Therefore, the part of the inclined plate 2 and the zigzag-shaped flow path 3 has a function of separating and removing both the oil component 18 and the precipitate 19 from the liquid, and achieves this in a single apparatus. . In this case, since the lower end side of the descending flow path portion 3b is used as a settling portion for the fine dust, the fine dust is effectively separated from the liquid by the inertial force applied to the fine dust by the flow, and the fine dust is directly collected in the settling portion and accumulated. Since the sediment passage 5 is provided at a different place, there is also an advantage that the accumulated sediment is less likely to flow again. Moreover, the flow path 3
Is long and layered due to the zigzag shape,
Has a large separation and removal effect in a small space. This purifier does not have a filter, so there is no need to replace the filter. Moreover, since a cyclone or a centrifugal force is not used, a large speed is unnecessary and the separation efficiency is high.

[0014]

The apparatus of the present invention comprises a plurality of inclined plates which are inclined in a hollow body at a distance from each other and whose upper and lower ends are spaced apart from the body, and the lower plate of the body. A liquid to be purified supply device for supplying a liquid to be purified containing impurities to the main body, a precipitate discharge port provided at the lower part of the main body for discharging impurities settled at the lower part of the main body, and an opening at the lower end side of the inclined plate at the upper part of the main body Since the purified liquid to be purified is discharged from the main body, and the floating substance discharge port for discharging impurities floating on the upper portion of the main body, which is open to the upper end side of the inclined plate on the upper portion of the main body, the liquid to be purified is When the liquid to be purified supplied from the supply device flows between the multiple inclined plates in the main body, impurities with a specific gravity lower than that of the purified liquid pass through the gap on the upper end side of the inclined plate and float up to the upper part of the main body. Float after ascending Impurities that are discharged from the substance discharge port and have a higher specific gravity than the purified liquid pass through the gap on the lower end side of the inclined plate and settle down to the bottom of the main body, and then are discharged from the sediment discharge port. The removed liquid to be purified flows out from the outlet on the upper part of the main body. Thus, a single device can remove both floats and precipitates.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a purification device according to an embodiment of the present invention.

[Explanation of symbols]

 1 Main Body 2 Inclined Plate 3 Zigzag Flow Path 3a Upflow Flow Path Part 3b Downflow Flow Path Part 4 Oil Passage 5 Sediment Passage 9 Supply Port 10 Purified Liquid 11 Purified Liquid Outlet 12 Oil Discharge Port 13 Precipitate Discharge Port 15 Tank 16 Float device 18 Oil 19 Deposit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Sato 1-204 Kibune, Meito-ku, Nagoya, Aichi Prefecture

Claims (1)

[Claims] 1. A plurality of inclined plates, which are inclined in a hollow body at a distance from each other, and whose upper and lower ends are spaced from the body, and an impurity provided in a lower portion of the body. A liquid to be purified supply device that supplies the liquid to be purified into the main body, a precipitate discharge port that is provided in the lower part of the main body to discharge impurities that have precipitated in the lower part of the main body, and a lower end side of the inclined plate above the main body An outlet for discharging the purified liquid to be purified out of the main body, and a floating material outlet for discharging impurities floating on the upper portion of the main body, which is open to the upper end side of the inclined plate on the upper portion of the main body,
Purification device equipped with.