JPS5811244B2 - Solid-liquid separator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for separating solids and liquids, and an object of the present invention is to improve drainage of the solid-liquid separator and to provide an apparatus suitable for low-viscosity solid-liquid separation. It was developed from etc.

First, an embodiment will be explained based on the attached drawings. 1 is a bottom wall of a settling tank, 2 is a solid-liquid mixture such as sludge settled on the bottom wall, and 3 is a pair of rails provided above the bottom wall 1. ,
4 is a vehicle body that can run freely on the rails via a group of wheels.

S is a screw conveyor provided on the car body 4, and the screw conveyor has a hollow pipe-shaped rotating shaft 5, a screw blade 6 provided on the outer periphery of the rotating shaft, and a suitable part of the screw blade is formed to be thick and hollow. a filter wall 7, a filter chamber 8 formed within the filter wall and communicating with the rotating shaft 5, and a casing 9 which rotatably accommodates the screw blade 6 and rotatably projects the rotating shaft 5. ,
It consists of a drive motor 10 provided at the protruding end of the rotating shaft 5, and the like.

Reference numeral 11 denotes a suction tube for the solid-liquid mixture 2. The lower end of the suction tube is shaped like a trumpet, and a ring-shaped rubber opening is provided around the side opening.

12 is a first vacuum tank provided in communication with the drive motor 10 of the screw conveyor S;
The base end of the suction pipe 11 is connected to the upper part of the first vacuum tank 12.

14 is a second vacuum tank provided on the vehicle body 3, and the second vacuum tank is communicated with the first vacuum tank 12 via a pipe 15.

16 is a drainage pump provided at the lower opening of the second vacuum tank 14.

17 is a vacuum pump, and this vacuum pump is connected to the second vacuum tank 14 and the rotating shaft 5 of the screw conveyor S through a pipe 18, respectively.

In addition, 19 is a conveyor for carrying out provided near the discharge port 20 formed in the casing 9 near one end of the screw conveyor S.

According to the present invention as described above, when the vacuum pump 17 is driven, the solid-liquid mixture 2 is stored in the first vacuum tank 12 through the suction pipe 11, and the solid-liquid mixture is stored in the first vacuum tank 12. The supernatant liquid is separated into a supernatant liquid and a precipitate, and the supernatant liquid is further transferred to a second vacuum tank 14 via a pipe 15.
stored inside.

On the other hand, the precipitate separated in the first vacuum tank 12 is carried out via the rotary valve 13 into the screw conveyor S, and is transferred via the screw conveyor to the conveyor 19 via a pipe 18. Due to the suction effect within the rotating shaft 5, the liquid in the precipitate is separated into the rotating shaft 5 via the filter wall 7 and the filter chamber 8, and only the remaining solids of the precipitate are sent to the discharge port 20 by the screw blade 6. The solids adhering to the screw blades 6 are scraped off from the discharge port 20 to the conveyor 19 by a scraping plate (not shown).

The present invention as described above is such that in a solid-liquid separator using a vacuum pump 17, the screw blade 6 provided on the outer periphery of the hollow pipe-shaped rotating shaft 5 is rotated by a filter wall 7 formed with a thick hollow at a suitable position. A solid liquid characterized in that a screw conveyor S having a filter chamber 8 communicating with the inside of the shaft 5 is rotatably provided, and the inside of the rotating shaft 5 is brought into a vacuum state by the vacuum pump 17. Since it is a separation device, when a solid-liquid mixture such as a precipitate is passed through the screw conveyor S, the liquid is separated by the vacuum action of the vacuum pump 17 via the filter wall 7, filter chamber 8 and rotating shaft 5. As a result, there are great practical effects, such as extremely good drainage of solid-liquid separators.

[Brief explanation of the drawing]

FIG. 1 is a front cross-sectional view of an embodiment of the present invention, FIG. 2 is a cut-away slant view showing the essential parts of the same, and FIG. 3 is a cut-away sectional view showing the same essential parts on an enlarged scale. S... Screw conveyor, 5... Rotating shaft, 6... Screw blade, 7... Filter wall, 8... Filter chamber, 1
7...Vacuum pump.

Claims (1)

[Claims] 1. In a solid-liquid separation system using a vacuum pump, a filter chamber that communicates with the inside of the rotating shaft is formed by a thick hollow filter wall formed at an appropriate location of a screw blade provided on the outer periphery of a hollow pipe-shaped rotating shaft. A solid-liquid separator characterized in that the screw conveyor is rotatably provided, and the inside of the rotating shaft is brought into a vacuum state by the vacuum pump.