JP3205223B2 - Multi-stage sedimentation classifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sedimentation classifier for discharging sediment such as sand from a stock solution such as a slurry.

[0002]

2. Description of the Related Art Conventionally, as a sedimentation classifier for discharging a sediment of sand from a slurry, a sediment fed into a sedimentation tank is settled while stirring, and the sediment is suctioned and discharged from a bottom part by a pump. However, since the amount of sedimentation in the sedimentation tank is limited, the treatment amount is limited, and there is a problem that a large place is required to install a large number of sedimentation tanks.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a multi-stage sedimentation classifier which can be installed in a narrow place, can achieve quick sedimentation, and can secure a large throughput.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention is for discharging sediment such as sand. A sedimentation tank having a discharge part formed at the center of the bottom is divided into a plurality of sedimentation chambers by a horizontal partition plate. And the supply pipes branched from the undiluted solution pipes are opened and connected to the respective settling chambers, and the overflow pipes branched to the drain pipes are arranged at the top of each settling chamber, and discharged to the center of each horizontal partition plate. The lower end of the discharge cylinder shaft is made to face the discharge part at the bottom of the sedimentation tank by inserting the cylinder shaft up and down, and a rotating means for rotating the discharge cylinder shaft is provided. A chute fixed to the cylinder shaft and arranged in each sedimentation chamber, a gap for dropping sediment is opened between each horizontal partition plate and the discharge cylinder shaft, and a chute for receiving sediment falling from the gap. Is fixed to the outer periphery of the discharge cylinder shaft and provided at the top of each settling chamber, It has a configuration which is Toru設 the discharge tube axis hole communicating with the inner bottom portion of the people of the chute. In addition, a chute may be opened at a position where each of the sedimentation bodies in the upper sedimentation chamber falls by the collected sludge, and may be fixed to the discharge cylinder shaft.

[0005]

The undiluted solution is supplied to each settling chamber from the supply pipe branched to the undiluted pipe, settles in each settling chamber, and drained from the overflow pipe branched to the drain pipe. And
The sediment in each sedimentation chamber is collected at the center by the sedimentation body, falls from the gap opened between the horizontal partition plate and the discharge cylinder axis to the chute in the sedimentation chamber below, and passes through the through hole. It is fed into the discharge tube shaft and discharged from the lower end of the discharge tube shaft. In the sedimentation chamber at the bottom, sediment is collected at the center by the sludge, and is dropped and discharged from the discharge part. Multi-stage sedimentation chambers are formed above and below, and the sedimentation action can be achieved in each sedimentation chamber so that large-scale treatment can be performed. In addition, when the chutes are opened at the positions where they fall by the collected sludge in the upper sedimentation chambers, the unsedimented stock solution can be respectively dropped into the lower sedimentation chambers, and the unsedimented stock solution can be prevented from being mixed into the chutes.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In the present example shown in FIGS. 1 and 2, reference numeral 1 denotes a sedimentation tank, which is a horizontal horizontal partition plate 1 having a height of about 20 cm.
A large number of 0s are arranged in the up-down direction to form a large number of sedimentation chambers 11 which are vertically divided. The central part of the bottom plate of the sedimentation tank 1 is a chute-shaped discharge part 12 facing downward.

Reference numeral 2 denotes a discharge cylinder shaft, each of which has a horizontal partition plate 10.
Of the sedimentation tank 1 with the lower end facing the discharge part 12 at the bottom of the sedimentation tank 1.
Plate 14 with the rotating shaft 21 connected to the settling tank 1
And a motor 22 with a speed reducer at the upper end of the rotating shaft 21.

Further, the inwardly inclined slats 30 are juxtaposed to the mounting rod 31, and the sludge collecting body 3 for collecting the sediment at the central part is fixed to the discharge cylinder shaft 2 and the sludge collecting body 3 is provided in each sedimentation chamber 11. It is located at the bottom. Further, a gap portion 4 is provided between the central hole 13 of the horizontal partition plate 10 and the discharge cylinder shaft 2, and a chute 5 for receiving the sediment falling from the gap portion 4 is fixed to the outer periphery of the discharge cylinder shaft 2. Above the sedimentation chamber 11.

The chute 5 is, as shown in FIG.
0 is fixed to a discharge cylinder shaft 2 having a lower end inserted therethrough, and a through hole 20 communicating with the inner bottom of each chute 5 is penetrated through the discharge cylinder shaft 2. Has been established.

Reference numeral 6 denotes an undiluted liquid tube, which is provided above and below a supply pipe 6.
1 is branched and connected to the upper part of each settling chamber 11 by opening toward the inner peripheral wall. Further, reference numeral 7 denotes a drain pipe, and the overflow pipe 71 that is branched faces the upper part of each settling chamber via a throttle valve 72.

The operation of the embodiment constructed as described above will be described. From the supply pipe 61 branched to the undiluted liquid pipe 6, each settling chamber 1
When the sand-containing slurry is supplied to the settling chamber 1, heavy sand is settled in each settling chamber 11, and the supernatant water is removed from the overflow pipe 7.
The waste water is drained from the drain pipe 7 through the drain pipe 1.

Sand, which is sediment in each sedimentation chamber 11, is collected at the center by the rotation of the sludge collecting body 3 by the discharge cylinder shaft 2, which is slowly rotated by the motor 22, and is collected by the horizontal partition plate 10 and the discharge part. It falls from the gap 4 opened between the cylindrical shaft 2 and the chute 5 of the sedimentation chamber 11 therebelow, and further passes through the through hole 20.
Through the discharge cylinder shaft 2 and is discharged from the lower end of the discharge cylinder shaft 2. In the lowermost sedimentation chamber, the sand is collected at the center by the sludge collecting body 3, and is dropped and discharged from the discharge part 12.

As described above, according to the present embodiment, the upper and lower multistage sedimentation chambers 11 are formed, and the sedimentation action is achieved in each of the sedimentation chambers 11 so that sediment can be discharged. At this time, the discharge of the sediment is
Since it is sent and discharged into the discharge cylinder shaft 2 communicated with 1, it is not necessary to provide a discharge chute in each settling chamber, so that the configuration is simple.

By adjusting the throttle valve 72, the sedimentation action in each of the sedimentation chambers 11 can be adjusted. If the stock solution and the stock solution concentration are constant, the stock solution can be continuously supplied by the first appropriate throttle adjustment. .

In addition, in order to facilitate assembly and maintenance, actually, as shown in FIG. 4, a filtration chamber forming frame 8 having a bottom plate is joined up and down and bolted with a flange portion, as shown in FIG. The chute 5 fixed to the discharge cylinder shaft 2 is divided into two halves and bolted at the flange portion, and as shown in FIG.
The sludge collecting body 3 fixed to the discharge cylinder shaft 2 may be divided into two parts and bolted to the flange portion.

Although the present embodiment is configured as described above, the present invention is not limited to this. For example, regardless of the shape of the sedimentation tank, the configuration of the discharge part at the bottom center is not limited. Also, the shapes and configurations of the sludge collecting body and the discharge cylinder shaft are appropriate, and the shape of the chute fixed to the discharge cylinder shaft is also arbitrary. As shown in FIG. May be fixed to the discharge cylinder shaft 2.
The means for adjusting the supply amount of the undiluted solution is not limited to the throttle valve of this embodiment.

[0017]

According to the present invention, a multistage sedimentation chamber is formed at the top and bottom, and sedimentation is achieved in each sedimentation chamber, and sediment can be discharged. Since the discharge is sent to and discharged from the discharge cylinder shafts that are arranged in communication with the respective sedimentation chambers, there is no need to provide a discharge chute in each of the sedimentation chambers, so that the configuration is simple. According to the second aspect of the present invention, the unsedimented stock solution can be dropped into each of the settling chambers below, so that the unsedimented stock solution can be prevented from being mixed into the chute.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view thereof.

FIG. 3 is an enlarged vertical sectional view of a main part thereof.

FIG. 4 is a longitudinal sectional view showing a connection state by a filtration chamber forming frame.

FIG. 5 is a cross-sectional view showing a connection state of a chute portion.

FIG. 6 is a cross-sectional view showing a connected state of the mud collector.

FIG. 7 is a cross-sectional view showing another example of the chute portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sedimentation tank 10 Horizontal partition plate 11 Sedimentation chamber 12 Discharge part 13 Central hole 2 Discharge cylinder shaft 20 Through hole 21 Rotating shaft 22 Motor with reduction gear 3 Mud collector 30 Blade plate 4 Gap part 5, 9 Chute 6 Raw liquid pipe 61 Supply Pipe 7 Drain pipe 71 Overflow pipe 72 Throttle valve

Claims (2)

(57) [Claims] 1. A method for discharging sediment such as sand, wherein a sedimentation tank having a discharge part formed at the center of the bottom is divided into a plurality of sedimentation chambers vertically by a horizontal partition plate, and the supply is branched from a stock solution pipe. The pipes are connected to each sedimentation chamber by opening, and the overflow pipes branched into drainage pipes are arranged at the top of each sedimentation chamber, and the discharge cylinder shaft is inserted vertically into the center of each horizontal partition plate to discharge the wastewater. The lower end of the shaft is made to face the discharge part at the bottom of the sedimentation tank, and a rotating means for rotating the discharge cylinder shaft is provided. And a gap for dropping the sediment is opened between each horizontal partition plate and the discharge cylinder shaft, and a chute for receiving the sediment falling from the gap is fixed to the outer periphery of the discharge cylinder shaft. Prepared at the top of each settling chamber and communicated with the inner bottom of each chute A multi-stage sedimentation classifier characterized in that holes are provided through the discharge cylinder shaft. 2. The multi-stage sedimentation classifier according to claim 2, wherein a chute is opened at a position where each of the sedimentation bodies in the upper sedimentation chamber falls by the collected sludge and fixed to the discharge cylinder shaft.