JPS5842021Y2 - Solids feeding device into water supply channel - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for feeding solids into a water supply channel.

The slurry transportation method is used when solid materials such as excavated soil, ore, and coal are transported continuously in large quantities.

Slurry transport is a means of fluidly transporting solids through pipelines.

There are conventional slurry transportation methods shown in FIGS. 1 and 2.

In the case shown in Figure 1, the solid material S is put into a reservoir 2 using a bulldozer 1, etc., and the solid material S is turned into slurry here.
This slurry is sucked by a pump ship 3 and transported as slurry through a pipeline 4.

Furthermore, in the system shown in FIG. 2, while water is being conveyed from a reservoir 5 through a water supply pipe 6, a double gate device 7 is used to intermittently inject solids into the water supply channel for transport.

In slurry transportation of excavated soil, the soil concentration in the slurry suitable for transportation is 5 to 10 wt% in the former case;
In the latter case, it is 5 to 15 wt%.

From this, it is clear that transportation can only be carried out inefficiently by any of the above methods.

The present invention was developed in view of the above, and according to it, the solids concentration to be transported as slurry is reduced to 15 to 40.
wt% (in the case of earth and sand), it becomes possible to carry out continuous transportation, which was impossible with conventional double gate devices.

Embodiments of the present invention will be described below with reference to FIGS. 3 and 4.

10 is a water supply channel, and the rise is from the reservoir 11 to the reclaimed land 12
, four or five fresh water pumps Pw are interposed at the beginning, and a slurry pump Ps is interposed at the middle.

A solids supply device is interposed in the water supply channel 10 between the fresh water pump Pw and the slurry pump Ps.

The solids feeding device includes a hopper 16 having a solids inlet 13 at the top and an outlet 14 at the bottom, and a solids delivery device 15 concentrically built in with a screw set, a solids inlet 17 at the top, and a hopper 16 at the bottom. A casing 20 having a slurry outlet 18 at the top and a rotary blade 19 built in concentrically, and a hopper 16
and a connecting pipe section 22 which communicates the outlet 14 of the casing 20 with the port 17 of the casing 20 and has a gate device 21 .

Then, the hopper 16, the connecting pipe section 22 and the casing 2
The 0's are arranged consecutively in the vertical direction.

The casing 20 is composed of an inlet pipe section 20A and a bottomed expanded diameter section 20B below the inlet pipe section 20A, and the outlet 18 is formed in the expanded diameter section 20B and faces the water supply channel 10 from the side thereof.

As the rotary blade 19, a so-called polute propeller is employed, in which spiral blade bodies 19B curved in the same direction are fixed at equal angle intervals to a conical rotary body 19A.

This is then rotated around a vertical axis.

23 is a drive motor for the solid matter delivery device 15, and 24 is a drive motor for the rotary blade 19.

In the above, the fresh water pump Pw and the slurry pump P
s is operated to feed water from the reservoir 11 into the water supply channel 10, and at the same time, solids, such as excavated soil S, are charged into the hopper 16 from its input port 13, and the solids delivery device 15 is rotated. The earth and sand are supplied by falling into the casing 20 through the solid matter outlet 14 and the connecting pipe section 22.

At the same time, the rotary blade 19 is rotated by the drive motor 24 in the direction of arrow X in FIG.

In this case, the rotating blade 19 is stopped and the hopper 1
When there is no sediment S in the casing 6, due to the flow rate of fresh water in the water supply channel 10, fresh water enters the casing 20 through the slurry outlet 18, further reaches the hopper 16, and is ejected from the solids input port 13. There is, but rotating blade 1
When 9 is rotated, its rotational energy (centrifugal force)
Such a situation is prevented by the action of , and the fresh water is maintained at a constant level L slightly above the rotary blade 19 within the casing 20 .

Therefore, the earth and sand S supplied from the solid matter outlet 14 of the hopper 16 falls into the fresh water in the mass casing 20,
The slurry is then stirred to form a slurry, which is then sent into the water supply channel 10 from the slurry outlet 18 by the centrifugal force caused by the rotation of the rotary blades 19.

Note that the opening adjustment section of the gate device 21 controls the casing 20.
The amount of earth and sand to be supplied into the tank can be adjusted as desired.

In this embodiment, a screw-type solid material delivery device 15 is provided in the hopper 16, but the delivery device 15 is capable of stably and continuously transporting solid materials such as earth and sand S that are difficult to feed into the casing 20. However, it is not necessary for products with low viscosity.

As is clear from the above explanation, according to the present invention, it is possible to increase the concentration of solids in the slurry to an arbitrary value, thereby not only improving transportation efficiency but also stably and stably introducing solids into the water supply channel. It can be done continuously.

Furthermore, since the device itself can be made small, it is also economical, and is particularly effective in transporting landfill soil, and can exhibit the maximum effect.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams of a conventional slurry transportation system, Figures 3 and 4 show an embodiment of the present invention, Figure 3 is a vertical side view, and Figure 4 is an enlarged AA in Figure 3. FIG. 10... Water supply channel, 11... Reservoir, 1
2... Landfill, 13... Solid material inlet, 14... Solid material outlet, 15... Solid material delivery device, 16... ...Hopper, 17...
...Solid inlet, 18...Slurry outlet, 19
...Rotating vane, 20...Casing,
21...Gate device, PW...Fresh water pump, Ps...Slurry pump.

Claims (1)

[Scope of utility model registration request] The outlet of the solids hopper is communicated via a gate device with the inlet of a casing which has an inlet at the top and an outlet at the outer periphery and is equipped with rotating blades that rotate around a vertical axis, and the outlet of the casing is connected to a water supply channel. A device for feeding solids into a water supply channel, characterized in that it faces the side.