JPS5843127B2 - Flow rate adjustment device in mud sampling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sludge collection device for discharging sludge settled in a settling tank into a sludge waterway.

Conventional sludge collecting equipment simply opens the upper end of the overflow pipe that collects sludge from the settling tank into the sludge waterway, and raises the water level in the settling tank higher than the opening at the upper end of the overflow pipe to prevent sedimentation due to the amount of water falling between the two. The sludge from the pond was made to overflow into the sludge channel.

For this reason, it is difficult to discharge sludge unless the water level in the settling tank is maintained above a certain level, and therefore it is difficult to adjust the operation at a small flow rate.

In view of the shortcomings of the conventional devices, the present invention has a structure in which the overflow pipe is vertically adjustable and the upper end opening of the overflow pipe is automatically adjusted by a float. It is as follows.

In the figure, 1 is a sedimentation tank, 2 is a sludge channel installed adjacent to the sedimentation tank 1, and 3 is a vertical communication pipe fixed to the bottom of the water channel 2, the lower end of which opens into the sludge reservoir 4 of the settling tank 1. It leads to mud sampling port 5.

Reference numeral 6 denotes an overflow pipe which is attached to the upper end opening of the communication pipe 3 so as to be able to rise and fall freely, and a packing 7 is attached between the outside of the overflow pipe and the inside of the upper end of the communication pipe 3.

8 is a frame fixed to the upper end of the overflow pipe 6; 9 is a lifting rod whose lower end is fixed to the iron frame 8; the upper part thereof is provided with a male screw, and is rotatably attached to the mounting frame 10 at the upper part of the sludge waterway 2; Screw the male screw onto the center label of the handle 11 that is attached, and then attach the handle 1.
1, the lifting rod 9 is raised and lowered together with the frame 8 and the overflow pipe 6.

12 is an opening provided at the upper end of the iron pipe 6, and 13 is this opening 12.
This valve body 13 is attached to one end of a lever 15 pivotally connected to the frame 8 by a shaft 14.

The other end of the lever 15 is bent downward to fix a float 16 to its lower end, and when the water level of the waterway 2 rises, the float 16 is bent downward.
6 floats up, the valve body 13 descends to reduce the opening ratio of the opening 12, and when the water level falls, the opening ratio of the opening 12 is expanded.

Furthermore, a sludge discharge pipe 17 is provided in the waterway 2.

The present invention has the above configuration, and when the upper end opening 12 of the overflow pipe 6 is lower than the water level of the sedimentation tank 1 and the valve body 13 is away from the opening 12 as shown in the figure, sludge is raked into the sludge reservoir 4. The settled sludge is sucked into the sludge sampling port 5 due to the head difference, rises in the communication pipe 3, overflows into the sludge waterway 2 from the upper end opening 12 of the overflow pipe 6, and is discharged from the discharge pipe 17. Ru.

Furthermore, when the overflow from the opening 12 increases and the water level of the waterway 2 rises, the float 16 rises and the valve 13 contracts the opening 12 to reduce the overflow.

Also, the water level of settling tank 1 changes and the water level of settling tank 1 and opening 1 change.
2 becomes too large or too small, the overflow pipe 6 can be moved by operating the nozzle 11 to adjust it to an appropriate value.

In the present invention, since the overflow pipe can be adjusted up and down as described above, the difference between the opening of the overflow pipe and the water level of the settling tank can be adjusted appropriately, and the upper end opening of the overflow pipe can be adjusted by a float. Since it is automatically adjusted by a valve that can be moved up and down, there is little fluctuation in the water level in the sludge channel, and the effect is that an appropriate water level difference is always maintained.

Therefore, even if the amount of raw water flowing into the sedimentation tank fluctuates, sludge is collected accordingly.

[Brief explanation of the drawing]

FIG. 1 is a cutaway vertical side view of the construction section of a sedimentation basin equipped with the apparatus of the present invention, and FIG. 2 is an enlarged vertical side view of the main parts of the same. 1...Sedimentation tank, 2...Sludge channel, 4.
...Sludge pool, 6...Overflow pipe, 12...
...Opening, 13...Valve, 15...
float.

Claims (1)

[Claims] 1. An overflow pipe with a sludge collection port at one end opened at the center bottom of the sedimentation tank is installed in the sludge waterway provided adjacent to the sedimentation tank, and the overflow pipe is filled with sludge that flows from the sludge collection port. In a sludge collecting device that allows sludge to overflow from the upper end opening into a sludge waterway, the overflow pipe is movable up and down, and a valve for opening and closing the opening is disposed at the upper end opening of the overflow pipe. A flow rate adjustment device for a mud collecting device, characterized in that a float floated on the water surface of a waterway and a throttle valve are swingably mounted on a lever supported at one point.