JP2593864Y2 - Sedimentation amount detection device in the slurry tank - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting the amount of sediment in a slurry tank.

[0002]

2. Description of the Related Art It is difficult to know the amount of sediment in a slurry tank because it cannot be seen from the outside. However, it is important for proper supply to a filter or the like to achieve a smooth process. Conventionally, the height of the sedimentary layer has been detected by ultrasonic detection or by changing the rotating body due to the resistance of the sedimentary layer. However, although the equipment cost is high in the case of using ultrasonic waves, it is inexpensive in the case of using the mutation of the rotating body,
It was complicated and had problems with accuracy.

[0003]

Accordingly, the present invention provides an apparatus capable of detecting the height of the sedimentary layer and judging the amount of sedimentation at a low cost with a simple configuration utilizing the change of the rotating body due to the resistance of the sedimentary layer. Things.

[0004]

SUMMARY OF THE INVENTION For this purpose, the present invention provides a rotating shaft vertically supported at the center of a slurry tank, a rotating device for rotating the rotating shaft, and a rotating interlock fixed to an upper portion of the rotating shaft. A rotary towing body having a center ring portion of a hanging member hung on a member via a towing member and being fitted to a lower portion of the rotary shaft with a play interval, and a rotary tow body having a play interval above the central ring portion; It is composed of a worn elevating body and a detector for detecting the elevating of the elevating body.

[0005]

When the rotation shaft is rotated by the rotating device, the rotation interlocking member of the rotary pulling body rotates, so that the towing member pulls the suspension member and rotates. As the sedimentation layer becomes higher, the suspension member is pushed up by the resistance and moves upward.

As a result, the center ring portion of the suspension member loosely fitted to the rotating shaft moves up along the rotating shaft, and pushes up the elevating body loosely fitted to the rotating shaft. Detectors such as limit switches and proximity switches detect the rise of the elevating body. By detecting the height of the sedimentary layer, the sedimentation state is known, and the sedimented sediment is discharged.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention. In this example shown in FIGS. 1 to 3, reference numeral 1 denotes a sedimentation tank, in which the rotating shaft 2 is vertically supported by a bracket 12 of a mounting member 11 fixed to the upper end of the tank 1 and suspended in the tank 1. Has been placed. A wheel 21 is fixed to the upper part of the rotating shaft 2 and is connected to a reduction motor 13 installed on the outer periphery of the tank 1 and a belt 14.

At the position of the rotary shaft 2 below the bracket 12, a rotation interlocking member 31 projects laterally and is welded to the rotary shaft 2, and projects laterally to a central ring portion 32 which is loosely fitted to the lower portion of the rotary shaft 2. The suspended member 33 and the rotation interlocking member 31
Are connected by These rotation interlocking member 31, suspension member 3
3, the chain 34 and the central ring portion 32 constitute a rotary traction body. Note that a stirring plate 35 is attached to the suspension member 33.

Reference numeral 4 denotes an elevating body, which is loosely fitted on the rotating shaft 2 between the bracket 12 and the central ring part 32, and projects a rotation interlocking member 31 as a cage frame without making contact therewith. As shown in FIG. 4, the vertical rod 41 of the elevating body 4 is inserted through a guide ring 22 protruding from the rotating shaft 2 so that the elevating body 4 rotates integrally with the rotating shaft 2. 5 is the bracket 1
2 is a limit switch attached below.

The lower portion of the sedimentation tank 1 is inclined in a hopper type, and is connected to a fountain device (not shown) for jetting water to the inner circumference of the tank 1 near the discharge port 15 which is open at the lower end. Nozzle 16 is attached.

Next, the operation of this embodiment will be described. When the rotation shaft 2 is rotated by the drive of the motor 13, the rotation interlocking member 31 is also integrally rotated, so that the suspension member 33 is pulled and rotated by the chain 34 and is stirred by the stirring plate 35. The supernatant water overflows from the upper end of the tank 1.

When the sedimentation proceeds and the sedimentary layer rises to some extent and sediments to the position of the suspending member 33, the suspension member 33 receives the resistance of the sedimentary layer and pulls and rotates the upper end of the sedimentary layer. That is, the suspending member 33 is always pushed up to the upper end of the sedimentation layer, and moves upward with the sedimentation.

As a result, the central ring portion 32 of the suspension member 33 loosely fitted to the rotating shaft 2 moves upward, and pushes up the elevating body 4 loosely fitted to the rotating shaft 2. In this state, chain 3
3, the suspension member 33 is pulled behind the rotation interlocking member 31 as shown in FIG. 3, and the lifting / lowering body 4 is moved by the difference between the vertical length of the chain 34 in the hanging state and the vertical state in the inclined state. Rises.

When the lifting body 4 is pressed against the limit switch 5 as shown in FIG.
Water is sprayed from 6 onto the inner circumferential surface of the tank 1 to dissolve sedimentary mud at the bottom and discharge it sequentially through the discharge port 15.

When the sedimentary mud is discharged, the suspending member 33 is also lowered by weight due to the lowering of the sedimentary layer, so that the elevating body 4 also descends and separates from the limit switch 5, so that the fountain device stops and the fountain enters the tank 1. Is stopped, the precipitation proceeds again, and the same action is repeated.

As described above, according to the present embodiment, the suspension member 33 is constantly pushed up to the upper end of the sedimentation layer, and the central ring portion 32 is moved up and down to directly move the elevating body 4 up and down.
Is detected by the limit switch 5 and the bottom sediment is discharged from the discharge port.

Although the present embodiment is configured as described above, the present invention is not limited to this. For example, the configuration of supporting the rotating shaft and the configuration of the rotating device that rotates the rotating shaft are not limited. The configuration of the rotary pulling body is not limited, but the hanging member is hung via the pulling member on the rotary interlocking member fixed to the rotary shaft, and the central ring portion of the hanging member is fitted to the lower portion of the rotary shaft with a play interval. Any configuration may be used as long as it is worn. in this case,
The shapes of the rotation interlocking member, the suspension member, the traction member, and the central ring portion are appropriate.

Further, the shape and the configuration of the elevating body fitted to the rotating shaft with a play interval are arbitrary, and may be mounted on the central ring part by its own weight. In addition, the detector for detecting the elevation of the elevating body may be a proximity switch or the like in addition to the limit switch. Regardless of the means of discharging the mud sand settled by the detection of the detector, the vibrator may be operated by the detection signal and discharged from the open discharge port, or the open / close valve provided may be opened and discharged from the discharge port. Good.

[0019]

According to the present invention, since the suspension member is always pushed up on the upper end of the sedimentation layer, the center ring moves up and down to directly move the elevating body up and down. In order to detect the amount of sediment, the height of sediment can be quickly and reliably detected to determine the amount of sediment.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional front view thereof.

FIG. 3 is a cross-sectional plan view thereof.

FIG. 4 is an enlarged cross-sectional view of the rotation shaft portion.

FIG. 5 is a vertical sectional front view showing a state where the elevating body is raised.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Settling tank 12 Bracket 13 Motor 15 Discharge port 16 Nozzle 2 Rotating shaft 22 Guide ring 31 Rotating interlocking member 32 Central ring part 33 Hanging member 34 Chain 35 Stirring plate 4 Elevating body 5 Limit switch

Claims (1)

(57) [Scope of request for utility model registration] 1. A rotating shaft 2, which is vertically supported at the center of a sludge tank, a rotating device 13 for rotating the rotating shaft, and a traction member 34 attached to a rotating interlocking member 31 fixed on an upper portion of the rotating shaft 2.
And a rotary pulling body formed by fitting a central ring portion 32 of a hanging member 33 suspended through the lower portion of the rotary shaft 2 with a play interval, and a rotary shaft 2 above the central ring portion 32 with a play interval. An apparatus for detecting the amount of sediment in a slurry tank, comprising: an elevating body 4 fitted therein; and a detector 5 for detecting the elevation of the elevating body 4.