JPS5823296B2 - hydro hoist - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydrohoist used for the hydraulic transportation of highly viscous materials, such as waste from alumina manufacturing plants, waste from sugar beet plants, highly concentrated clayey soil and mortar. be.

To explain a conventional hydro hoist of this kind with reference to FIG. 1, 1a to 1c are feed pipes for temporarily storing slurry arranged in parallel, and a high-pressure drive liquid pump 3 is connected to one side of the pipes through valves 2a to 2c. At the same time, slurry supply pipes 7a to 7c are connected to the outflow sides of the valves 2a to 2c, respectively, and communicate with the main pipe 7 via valves 6a to 6c.
A transport pipe 5 is connected to the other side of a to 1c via valves 4a to 4c, and a valve 8b is connected to the inflow side of the valves 4a to 4c.
Driving liquid return pipes 9a to 9 communicate with main pipe 9 via ~8c
c are connected to each other.

The main pipe 7 is connected to a low pressure slurry pump 10 that communicates with a slurry tank 11, and the main pipe 9 is connected to a driving liquid tank (not shown).

12 is a conveyor that transports the solids to the slurry tank 11.

If the valves 2a to 2c and 4a to 4c are now closed and the valves 6a to 6c and 8a to 8c are opened to drive the low pressure slurry pump 10, the slurry sent out from the pump 10 is supplied to the feed pipes 1a to 1c. Ru.

When the slurry is filled into the feed pipes 1a to 1c, the valves 6a to 6c and 8a to 8c are closed, and the valves 2a to 1c are closed.
When 2C and 4a to 4c are opened and the high-pressure drive liquid pump 3 is driven, the slurry filled in the feed pipes 1a to 1c is force-fed to the transport pipe 5 by the drive liquid.

As mentioned above, in the conventional hydro hoist, the feed pipe 1
A low-pressure slurry pump 10 is used to pump slurry to a to 1c, but this pump 10 can only handle slurry that is too viscous (and has good fluidity (iooocp or less)). Uses are limited.

That is, slurries such as waste from alumina production plants or waste from sugar beet plants are extremely viscous, and if they exceed the liquid limit and lose their fluidity, they must be transported by pump. That was impossible.

For this reason, it has been impossible to transport the highly viscous slurry by diluting it with a large amount of water to give it fluidity.

In view of the above, an object of the present invention is to provide a hydro hoist capable of pumping highly viscous slurry (sludge) that cannot be handled by a low-pressure slurry pump to a feed pipe, and the main purpose of the present invention is to A reciprocating piston is installed at the bottom of the hopper attached to the hopper, and a throttle is provided in the main pipe of the driving liquid return pipe to apply back pressure to the slurry when it is pressurized into the feed pipe. be.

An embodiment of the present invention will be described below with reference to the drawings.

Among the symbols in FIG. 2, the same symbols as those in FIG. 1 indicate the same parts.

In FIG. 2 and FIG. 3, 13 is a slurry supply 7a.
The hopper is attached to the main pipe 7 that communicates with the main pipe 7c, and has a funnel-shaped cross section, and a cylindrical part 13a that communicates with the main pipe γ is provided at the bottom.

14 is a reciprocating piston that is movably provided in the cylindrical portion 13a, and 15 is a throttle provided in the main pipe 9 that communicates with the drive fluid return pipes 9a to 9c. Apply back pressure to highly viscous slurry.

The rest of the structure is the same as that in FIG. 1, so a description thereof will be omitted.

Since the present invention has the above structure, the conveyor 12
The highly viscous slurry, that is, the slurry with low fluidity that exceeds the liquid limit, is fed into the hopper 13 by the piston 14 of the reciprocating pump, and is then fed to the main pipe 7 through the slurry supply pipes 7a to 7c. Feed pipes 1a to 1c
It can be filled inside.

At this time, appropriate back pressure is applied to the slurry being forced into the slurry feed pipes 1a to 1c when it is forced into the slurry by the piston 14 due to the throttle resistance caused by the throttle 15 provided in the main pipe 9 and the pipe resistance. Ru.

Therefore, the highly viscous slurry is compressed by the back pressure, becomes a cylindrical mass, and is forced into the feed pipes 1a to 1c.

The operation of force-feeding the slurry filled in the feed pipes 1a to 1c to the transport pipe 5 is the same as the conventional one.

As described above, according to the present invention, it is possible to easily hydraulically transport highly viscous substances that are extremely difficult to handle with conventional hydrohoists.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of a conventional hydro hoist, Fig. 2 is a schematic diagram of a hydro hoist of the present invention, and Fig. 3 is a schematic diagram of a conventional hydro hoist.
It is a sectional view taken along the line -■. 1a to 1c...Feed pipe, 7...Slurry supply main pipe, 9...Driving liquid return main pipe, 13.
...Hopper, 14...Reciprocating piston,
15...Aperture.

Claims (1)

[Claims] 1 A feeding system that temporarily stores high viscosity slurry, a driving fluid supply pipe with a switching valve, a discharge pipe, and a slurry supply pipe connected to it, and the slurry filled in the feeding pipe is pumped by the driving fluid...hydrohist A reciprocating piston is disposed at the bottom of a hopper attached to the main pipe of the slurry supply pipe, and back pressure is applied to the slurry in the main pipe of the driving liquid return pipe when the slurry is pressurized into the feed pipe. A hydro hoist characterized by a red-colored aperture.