JPS6130808B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION An object of the present invention is to provide a slurry concentrator that allows solid content in the slurry to be easily removed and that allows the slurry to be easily concentrated without the need for a stirrer. This is the purpose.

Slurry concentrators generally stir the slurry to settle and separate the solids, and then remove the settled solids, but the stirrer used to stir the slurry is large and requires a lot of power to rotate the stirrer. A large one is used.

Another disadvantage is that when the solids that have been sedimented and separated are taken out, relatively large lumps in the solids can clog the pipes and the like for taking out the solids.

Therefore, as a result of various studies, the inventor of the present invention found that by adopting the structure described in the claims, it is possible to easily concentrate the slurry without using a stirrer, and the pipes are not clogged by the solid content that has settled and separated. A slurry concentrator with no simple structure could be obtained.

1 and 2 show one embodiment of the present invention, and the present invention will now be described based on these drawings. An introduction pipe 2 is installed along the axis of the main body 1 of the slurry concentrator.

Further, an inflow pipe 3 is attached to the bottom surface of the main body 1, and is opened toward the opening 4 directly above the opening 4 of the pipe 3, and there is a slight gap between the pipe 3 and the opening 4. A discharge pipe 5 is attached with a gap d, and the pipe 5 penetrates the side wall 6 of the main body 1 and projects to the outside of the main body 1. Also,
An auxiliary pipe 7 and a suction pump 8 which open above the pipe 5 and branch from the pipe 5 are sequentially attached to the discharge pipe 5, and the other end of the inflow pipe 3 is connected to the pump 8. The inflow pipe 3, the discharge pipe 5, and the inflow pipe 3 communicate with each other.
A constant flow of liquid is formed between the auxiliary pipe 7 and the auxiliary pipe 7, respectively.

On the other hand, a tab float 9 is attached to the outer periphery of the introduction tube 2 of the main body 1 on the slurry surface in the main body 1. The tub float 9 is an annular body having a groove 10 formed concentrically with the introduction pipe 2 and having a U-shaped cross section.

Further, a plurality of tab float inlets 12 are formed on the bottom surface 11 of the tub float 9, so that the supernatant liquid flows into the groove 10, and the bottom surface 1
1 is formed with a plurality of tab float outlets 15, and a flexible hose 13 is connected to the lower side thereof, and the other end of the flexible hose 13 communicates with a water tank (not shown).

The tub float 9 only needs to be able to float on the slurry surface and capture the supernatant liquid, and is not necessarily annular but may have a tub-like shape. Its materials include metallic float, polyethylene,
A polyolefin synthetic resin such as polypropylene or wood can be used, and if necessary, a plurality of holes may be bored in both side walls forming the groove 10 of the annular body of the tub float 9. The groove 10 may be formed so that the slurry overflows from the upper edge thereof and flows into the groove 10.

The present invention has the above configuration, and
The solid content in the slurry supplied into the slurry concentrator main body 1 gradually settles toward the bottom inside the main body 1, forming a slurry with a low solid content in the upper part and a high solid content concentration in the bottom part. be done.

When the suction pump 8 is then operated, a circulating flow is formed at the bottom of the main body 1, flowing from the inflow pipe 3 and being discharged from the discharge pipe 5, as shown by the arrow in FIG. In the gap d between the inflow pipe 3 and the discharge pipe 5, the slurry in the main body 1 is taken into the circulating flow and discharged from the discharge pipe 5, and at the same time, the solid content is removed from the auxiliary pipe 7 attached to the discharge pipe 5. Since the liquid with a low concentration is taken in and discharged while diluting the slurry with a high solid content taken in from the gap d, the discharge pipe 5 can be discharged smoothly without any fear of clogging.

When the slurry further advances through the discharge pipe 5 and reaches the pump 8, it is pressurized by the pump 8 and most of the slurry is sent from the pipe 14 to a solid content separator (not shown). Also, a part of the slurry is transferred to the inlet pipe 3.
The solid content that flows into the main body 1 through the slurry and settles can be circulated into the pipe 5 and taken in.

On the other hand, the tab float 9 floating on the surface of the slurry in the main body 1 gradually replenishes the supernatant liquid, which has almost no solid content, in which the solid content in the slurry has settled, into the groove 10. Slurry concentration can be gradually concentrated. Moreover, since the tub float 9 also descends within the main body 1 following the decrease in the amount of slurry, the slurry can always be automatically concentrated.

That is, the present invention allows the slurry to be concentrated by automatically replenishing the supernatant liquid of the slurry using the tub float 9 without any need for a conventional large-scale stirrer. Even if the liquid level drops, the tub float 9 follows the liquid level, so that the supernatant liquid of the slurry can be continuously replenished and concentration can be continued.

In addition, the solid content that has settled at the bottom of the main body 1 can be smoothly taken into the discharge pipe 5 by the liquid that is formed in the main body 1 and circulated, and can be disposed of.

Therefore, the present invention does not require a large agitator as in the prior art, and requires only a small suction pump as a power source, thereby greatly reducing the power cost required for slurry concentration and saving energy.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1. 1...Main body, 2...Introduction pipe, 3...Inflow pipe, 4...
Opening of inflow pipe 3, 5... Discharge pipe, 6... Body side wall, 7... Auxiliary pipe, 8... Pump, 9... Tab float, 10... Groove, 11... Tab float bottom surface,
12...Tab float inlet, 13...Flexible hose, 15...Tab float outlet.

Claims (1)

[Claims] 1. An inflow pipe is attached to the bottom of the main body of the slurry concentrator, and an outlet pipe that opens with a slight gap at the top of the opening of the pipe and has an auxiliary pipe that captures water from the top is attached. The discharge pipe penetrates the side wall of the slurry concentrator and protrudes to the outside, and a suction pump is attached to the tip of the protruding part, and is connected to the inflow pipe via the suction pump to the bottom of the main body of the slurry concentrator. A circulation flow is formed in the slurry, and a part of the slurry is taken in by this flow and discharged.On the other hand, a tub float is installed to float above the liquid surface inside the slurry concentrator body. . A slurry concentrator, characterized in that the tub float is formed to capture supernatant liquid on the surface of the liquid.