JPH11226305A - Liquid treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a liquid treatment apparatus. SOLUTION: This apparatus comprises a primary tank 11 in which a liquid before treatment is introduced from the upper end and flows down, a secondary tank 12 installed side by side to the primary tank and in which the treated liquid flows upward and taken out of the upper end, and a precipitation tank 13 communicating an aperture 16 in the bottom face of the primary tank 11 with an aperture 22 in the bottom face of the secondary tank 12 and these tanks 11, 12, 13 are integrated. The primary tank 11 is so formed as to have a rectangular cross-section shape in approximately whole length and provided with a plurality of flocculation plates 17 installed in parallel in the inside. The secondary tank 12 is so formed as to have a quadrangular pyramid shape and the primary tank 11 is slantingly installed along one side face of the secondary tank 12. A conveyer 31 for discharging precipitated matter is laid diagonally upward from the bottom part of the precipitation tank 13. The conveyer 31 discharges the precipitated matter by rotating an endless belt 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid processing apparatus for precipitating and removing impurity particles from a liquid.

[0002]

2. Description of the Related Art As shown in Japanese Patent Application Laid-Open No. Hei 8-71309, a main body container has a main body upper conical part whose diameter is gradually increased downward, and a lower part which is formed integrally with a lower part thereof. A lower part of the lower part of the main body is provided with a sedimentation tank, and a screw conveyor for discharging the precipitate to the outside is provided at the bottom of the sedimentation tank. The provided liquid processing apparatus is shown.

[0003]

In this conventional liquid processing apparatus, since the upper conical portion of the main body, the lower conical portion of the main body and the sedimentation tank body are vertically arranged, the overall height is increased and the conical shape is obtained. Therefore, space efficiency is low, and it cannot be installed compactly as an accessory device near a machine tool or the like.

[0004] Further, the screw conveyor for discharging the sediment has problems such as that the maintenance is troublesome and the efficiency of collecting the sediment is not good.

The present invention has been made in view of the above points, and has as its object to reduce the size of a liquid processing apparatus, to maintain the liquid processing apparatus free of maintenance, and to further reduce the liquid processing apparatus. It is an object of the present invention to improve the sediment collection efficiency of the processing apparatus.

[0006]

According to the first aspect of the present invention, there is provided a primary tank in which a liquid before treatment is introduced from an upper end and lowered to an opening in a bottom surface, and a primary tank is provided adjacent to a side of the primary tank. A secondary tank which raises the liquid from the bottom opening and takes it out from the upper end, a sedimentation tank communicating the bottom opening of the primary tank and the bottom opening of the secondary tank, and for discharging the sediment drawn out from the inside of the sedimentation tank to the outside And a conveyer.

[0007] At the stage where the liquid before treatment descends inside the primary tank, fine impurity particles in the liquid are combined with each other by agglomeration to grow into large particles. Settles under its own weight. In addition, the impurity particles in the liquid grown in the primary tank are separated from the liquid when the liquid changes its direction from the bottom opening of the primary tank to the bottom opening of the secondary tank adjacent to the side. Settles down.

According to a second aspect of the present invention, in the liquid processing apparatus according to the first aspect, the primary tank is formed in a rectangular cross section over substantially the entire length, the secondary tank is formed in the shape of a quadrangular pyramid, A primary tank is installed in an inclined shape along one side.

[0009] Then, inside the primary tank, which is installed obliquely along one side surface of the secondary tank formed in a quadrangular pyramid shape,
The descending liquid is susceptible to interference from the inner wall of the primary tank, etc., and the fine impurity particles in the liquid are combined by agglomeration to grow into large particles, and settle by their own weight from the bottom opening of the primary tank into the sedimentation tank. . Further, the liquid moving from the bottom opening of the primary tank toward the bottom opening of the secondary tank adjacent to the side,
Since the direction is changed at an acute angle, the impurity particles in the liquid grown in the primary tank are efficiently separated from the liquid and settle in the settling tank.

According to a third aspect of the present invention, in the liquid processing apparatus according to the first or second aspect, the primary tank has a coagulation plate installed in parallel inside.

An aggregating plate is installed in parallel in the primary tank to promote an aggregating action in which impurity particles are combined with each other by an interference action on an inner wall surface of the primary tank and an interference action on a surface of the aggregating plate. Let it.

According to a fourth aspect of the present invention, in the liquid processing apparatus according to any one of the first to third aspects, the conveyer is provided below the endless belt that is driven to rotate and the upper end folded portion of the endless belt. And a rotating brush that comes into contact with the endless belt.

[0013] Then, the operation is continued while cleaning the endless belt with a rotating brush under the folded portion of the upper end of the endless belt, and the deposit attached to the endless belt is forcibly dropped and removed by the rotating brush. I do.

According to a fifth aspect of the present invention, there is provided a liquid processing apparatus according to the fourth aspect, wherein the endless belt of the conveyor is provided with a sediment crawling part horizontally disposed along the bottom of the sedimentation tank, And a sediment drying unit continuously and upwardly drawn from one end of the scraping unit.

After the sediment settled in the sedimentation tank is scraped to one end of the sedimentation tank by the sediment scraping part of the endless belt, the sediment is continuously pulled up from the sedimentation tank in the sediment drying part and transported. While drying.

According to a sixth aspect of the present invention, there is provided the liquid processing apparatus according to the fourth or fifth aspect, wherein the endless belt of the conveyor is provided with a belt main body and a telescopic side plate provided on both sides over the entire length of the belt main body. And a plurality of ridges provided at regular intervals of the belt body between the side plate portions on both sides, and the primary tank and the secondary tank project from the inner wall surface to the inside of the side plate portion of the endless belt. Provided with respective guide plates.

[0017] The sediment when settling from the primary tank and the secondary tank to the sedimentation tank is separated by a guide plate protruding from the inner wall surface of the primary tank and the secondary tank on both sides of the belt body of the endless belt. And then discharged from the settling tank through the ridges between the side plates on both sides.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.

As shown in FIG. 1, a primary tank 11, a secondary tank 12, and a settling tank 13 are provided integrally. The primary tank 11 is formed in a rectangular box shape having a rectangular cross section over substantially the entire length, while the secondary tank 12 is formed in a quadrangular pyramid shape, and the primary tank 11 is formed along one side surface of the secondary tank 12. It is installed in an inclined shape.

As shown in FIG. 2, the primary tank 11 is provided with a liquid inlet 15 at the upper end of a tank body 14 and a bottom opening 16 opened to the settling tank 13 at the bottom of the tank body 14. I have. Therefore, the dirty liquid L before treatment introduced from the liquid inlet 15
Goes down in the tank body 14 of the primary tank 11 and enters the settling tank 13 through the bottom opening 16.

Inside the primary tank 11, a plurality of cohesive plates 17 made of stainless steel are provided over substantially the entire length.
These coagulation plates 17 are parallel to the side of the tank body 14 located on the side adjacent to the secondary tank 12 and on the opposite side thereof,
From the one side plate to the other side plate.

On the other hand, the secondary tank 12 is installed adjacent to the side of the primary tank 11, and its tank body 21 is provided with a bottom opening 22 connected to the settling tank 13 at the lower part, and the liquid is contained therein. A space 23 for raising is provided, and a liquid outlet 24 for taking out a processed clean liquid is provided at an upper end, and a pipe 25 for liquid circulation to a machine tool is connected to the liquid outlet 24.

The tank body 21 of the secondary tank 12 is shown in FIG.
(A) As shown in (C), the upper part is formed in a quadrangular pyramid shape with respect to the lower part formed in equal width.

The sedimentation tank 13 has a tank main body 26 formed in a flat rectangular box shape, and the upper surface of the tank main body 26 is opened almost over the entire surface, and the primary tank 11 and the secondary tank 12
The bottom opening of the primary tank 11 and the bottom opening 22 of the secondary tank 12 are communicated via the settling tank 13.

A conveyor 31 for discharging precipitates is provided diagonally upward from the inside of the precipitation tank 13. This conveyor 31
Has a rectangular cylindrical casing 32 projecting obliquely upward from one end of the settling tank 13 on the opposite side of the primary tank 11, and an endless belt 33 is continuously disposed inside the settling tank 13 and the casing 32. Has been established.

That is, the endless belt 33 of the conveyor 31 is
A lower sediment creeping part 34 horizontally disposed along the bottom of the sedimentation tank 13,
And a sediment drying section 35 which is drawn out in an inclined manner upward.

One end of the endless belt 33 is wound around a driven pulley 36 rotatably supported in the sedimentation tank 13, and the other end of the endless belt 33 is provided with a motor built in the upper part of the casing 32. Around the drive pulley 37.

The drive pulley 37 with a built-in motor is an electric motor elongated in the axial direction using a pipe-shaped pulley body as a motor housing, and is provided so as to be vertically movable with respect to the upper end of the casing 32 of the conveyor 31. The shaft 39 of the drive pulley 37 is fixed to the U-shaped take-up plate 38 provided.

That is, when the drive pulley 37 is energized to the motor coil incorporated in the pulley body, the pulley body rotates with respect to the shaft 39 fixed to the take-up plate 38 to drive the endless belt 33 to circulate.

The take-up plate 38 adjusts the tension such as the looseness of the endless belt 33 by moving and adjusting the length of the casing 32 in the longitudinal direction.

Further, as shown in FIG.
The casing 32 of the casing 31 is provided with a sediment take-out part 41 downward from the upper end thereof, and an outlet 42 is opened at a lower end of the sediment take-out part 41.

A cylindrical rotary brush 43 which comes into contact with the endless belt 33 below the upper end folded portion of the endless belt 33 is rotatably supported by a rotary shaft 44 at the precipitate removing portion 41 of the conveyor 31. As shown in FIG. 1, this rotary brush is driven by an electric motor 45 mounted on one side of the precipitate removing portion 41.
The rotation shaft 43 is rotated.

As shown in FIG. 3, the endless belt 33 of the conveyor 31 has a belt body 46 formed of a flexible synthetic resin, and is integrally formed in a bellows shape on both sides over the entire length of the belt body 46. Telescopic side plate 47,
A plurality of ridges 48 are provided between the side plates 47 on both sides of the belt main body 46 at regular intervals.

Further, as shown in FIG.
And the side wall 47 of the endless belt 33 from the inner wall surface of the secondary tank 12.
Guide plates 49 protrude from the inside of each of them. Although the guide plate of the primary tank 11 is not shown, it is provided similarly to the secondary tank 12.

Next, the operation of the illustrated embodiment will be described.

For example, in a case where sludge is separated and collected from a coolant liquid discharged from a machine tool such as a grinder, the liquid L before treatment falls inside the primary tank 11 only by its own weight, and the liquid L in the liquid is removed. Fine impurity particles combine with each other by agglutination to grow into large particles, and the bottom of the primary tank 11 is opened.
From 16, it settles in the sedimentation tank 13 by its own weight.

At this time, the secondary tank 12 formed in a quadrangular pyramid shape
Inside the primary tank 11 installed at an angle along one side surface, the descending liquid is susceptible to interference from the inner wall surface of the primary tank 11 and the surface of each coagulating plate 17 installed in parallel, The fine impurity particles in the inside are combined by the agglomeration action on the inner wall surface of the primary tank 11 and the surface of each aggregating plate 17, and grow into larger particles as they descend, from the bottom opening 16 of the primary tank 11 to the settling tank 13. Settles under its own weight.

Also, the liquid flowing from the bottom opening 16 of the primary tank 11 toward the bottom opening 22 of the secondary tank 12 adjacent to the side changes its direction at an acute angle. The impurity particles are efficiently separated from the liquid and settle in the settling tank 13.

At this time, the sediment settling from the primary tank 11 and the secondary tank 12 to the settling tank 13 is transferred to the belt of the endless belt 33 by the guide plate 49 projecting from the inner wall surface of the primary tank 11 and the secondary tank 12. It is guided between the side plates 47 on both sides of the main body 46.

Thus, the endless belt in the settling tank 13
The sediment that settled on the surface of the endless belt 33
After being scraped to one end of the sedimentation tank 13 by 34, it is continuously pulled up from the sedimentation tank 13 and is dried while being ascended and transported in the sediment drying section 35. At that time, the sediment is reliably taken out of the sedimentation tank 13 by the raking ridges 48 between the side plates 47 on both sides, and is moved to the upper end folded portion of the endless belt 33.

The sediment that has been raised to the folded portion of the upper end of the endless belt 33 is discharged to the sediment take-out part 41 and falls from the outlet 42 thereof. A collection container (not shown) for storing the fallen sediment is provided below the outlet 42.

When the precipitate is metal powder or sludge separated from the coolant of the machine tool, it is recovered and reused.

On the other hand, the endless belt 33 is cleaned by the rotating brush 43 provided below the folded portion of the upper end, so that the sediment does not return to the sedimentation tank 13. That is, the rotating brush 43
Contacts the belt main body 46, the side plate portion 47, and the ridge portion 48 of the endless belt 33, forcibly removes the deposits adhering to the belt body 46, the side plate portion 47, and collects them in the collection container from the outlet 42.

The driving pulley 37 of the conveyor 31 and the electric motor 45 of the rotating brush 43 are operated at a cycle set by a timer, for example, at intervals of 15 minutes, for a time set by each timer, for example, for 2 to 3 seconds. It is good to drive intermittently.

The endless belt 33 of the conveyor 31 is, for example, 16
It is moved at a low speed such as one rotation over time to prevent the sediment scraping part 34 from stirring in the sedimentation tank 13 and
In the precipitate drying section 35, the precipitate is sufficiently dried.

[0046]

According to the first aspect of the present invention, the secondary tank is installed adjacent to the side of the primary tank, and the bottom opening of the primary tank and the bottom opening of the secondary tank are communicated by the settling tank. Therefore, the overall height of the apparatus can be reduced, and downsizing can be achieved.

According to the second aspect of the present invention, since the primary tank having a rectangular cross-section over substantially the entire length is installed along one side of the quadrangular pyramid-shaped secondary tank, the apparatus is inclined. It is possible to provide a liquid processing apparatus that is entirely square and has good space efficiency, and can be compactly installed as an accessory device near a machine tool or the like.

According to the third aspect of the present invention, the coagulation plate is installed in parallel in the primary tank to increase the coagulation efficiency in the primary tank, so that the primary tank can be formed compact.

According to the fourth aspect of the present invention, since the conveyor is provided with the rotating brush which comes into contact with the endless belt below the folded portion of the upper end of the endless belt, the operation is performed while cleaning the endless belt with the rotating brush. Since the primary and secondary tanks have a simple structure, maintenance is not required, maintenance-free operation can be achieved, and sediment adhering to the endless belt is efficiently removed by the rotating brush. By dropping, the efficiency of recovering the precipitate can be improved.

According to the fifth aspect of the present invention, the sediment precipitated in the sedimentation tank is scraped to one end of the sedimentation tank by the sediment scraping portion of the endless belt, and thereafter, the sediment pulled out in an inclined manner upward. Since the drying process can be continuously performed in the material drying section, the precipitate can be efficiently collected.

According to the sixth aspect of the present invention, the sediment when settling from the primary tank and the secondary tank to the settling tank is transferred to the endless belt by the guide plate protruding from the inner wall surface of the primary tank and the secondary tank. On the belt body and between the side plates on both sides, and can be reliably discharged from the settling tank by the ridges between the side plates on both sides, so that the efficiency of collecting precipitates can be improved.

[Brief description of the drawings]

FIG. 1A is a plan view showing an embodiment of a liquid processing apparatus according to the present invention, FIG. 1B is a front view thereof, and FIG. 1C is a side view thereof.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view showing a settling tank of the liquid processing apparatus.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

[Explanation of symbols]

 L liquid 11 Primary tank 12 Secondary tank 13 Sedimentation tank 16 Bottom opening 17 Coagulation plate 22 Bottom opening 31 Conveyor 33 Endless belt 34 Sediment scraping part 35 Sediment drying part 43 Rotating brush 46 Belt body 47 Side plate part 48 Scraping Line 49 Information board

Claims (6)

[Claims] 1. A primary tank for introducing a liquid before treatment from an upper end and lowering the liquid to an opening on a bottom surface, and a secondary tank installed adjacent to a side of the primary tank and rising the liquid from the opening on the bottom surface and removing the liquid from the upper end. A settling tank communicating the bottom opening of the primary tank and the bottom opening of the secondary tank, and a conveyor for discharging the precipitate drawn out from the inside of the settling tank to the outside. . 2. The secondary tank is formed in a rectangular cross section over substantially the entire length, the secondary tank is formed in a quadrangular pyramid shape, and the primary tank is installed along one side of the secondary tank in an inclined manner. The liquid processing apparatus according to claim 1, wherein: 3. The liquid processing apparatus according to claim 1, wherein the primary tank has a coagulation plate installed in parallel inside. 4. The conveyor according to claim 1, further comprising an endless belt that is driven to rotate, and a rotating brush that comes into contact with the endless belt below an upper end folded portion of the endless belt. The liquid processing apparatus according to any one of the above. 5. The endless belt of the conveyor is pulled out horizontally from the one end of the sediment creeping portion, which is horizontally disposed along the bottom of the sedimentation tank, and is inclined upward. 5. A deposit drying section.
The liquid processing apparatus according to any one of the preceding claims. 6. An endless belt for a conveyor is provided at a constant pitch of the belt main body between a belt main body, telescopic side plate portions provided on both sides over the entire length of the belt main body, and between the side plate portions on both sides. A plurality of ridges are provided, and the primary tank and the secondary tank each include a guide plate protruding from the inner wall surface to the inside of the side plate portion of the endless belt.
The liquid processing apparatus according to any one of the preceding claims.