JPS594329B2 - Re-slurry conversion and removal device for settling slurry in a tank - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for reslurrying settling slurry stored in a tank on a transport ship or on land, and transporting the reslurry to the outside of the tank. .

When using fluid jets as a reslurry method,
In the conventional device, as shown in Figure 1, a nozzle 2 is provided at the bottom of the bottom plate of a tank 1, from which a jet of fluid is ejected to re-slurry, and this re-slurry is guided by gravity. At the same time, the slurry pump 3 similarly provided at the bottom of the tank bottom plate carries out the slurry out of the tank.

When such a reslurry/unloading device is installed in a storage tank of a transport ship, the bottom plate of the tank must be raised by the height occupied by the device, which reduces the internal volume of the tank.

In addition, in the case of land tanks, it is difficult to take measures to prevent leakage against earthquakes, etc., and the risk of contents leaking increases.

Particularly when the contents of the stored material are hazardous materials such as coal/heavy oil slurry, leakage does not only result in a simple loss of slurry, but also causes more serious problems.

Furthermore, if equipment failure or slurry blockage occurs while the tank or slurry delivery route is filled with slurry, whether it is on a transport ship or onshore tank, it is virtually impossible to inspect, maintain, or repair the problem. Close to.

The purpose of the present invention is to eliminate the drawbacks of the conventional reslurry equipment and unloading equipment as described above. eliminate danger,
This facilitates inspection, maintenance, repair, etc. of the device itself.

Therefore, the present invention provides a re-slurrying device and an unloading device that are integrally installed in a suspension lip, so that both devices can be operated at the same time, and the suspension lip itself can be inserted into a tank and pulled up freely. The present invention provides an apparatus for reslurryizing and discharging a sedimentary slurry stored in a tank, configured as described above.

Examples will be described below with reference to the drawings.

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In FIG. 2, a frame 12 is placed outside the tank 11.

The frame 12' is made movable by appropriate means such as a cart 13 on the legs of the frame 12.

Two pairs of eight wheels 15 are attached to the horizontal ribs 14 of the frame 12, and the wheels 15 sandwich and support the suspension ribs 16.

One of the wheels 15 is connected to a drive motor 17 via a transmission mechanism, and by appropriately driving this drive motor, the wheel 15 is rotated and the suspension rib 16 is moved up and down, allowing it to be inserted into the tank and pulled up. Eggplant.

A re-slurrying device and slurry discharging device, which will be described in detail later, is provided below the suspension rib 16.

A slurry pump drive shaft 18 is disposed inside the suspension rib 16, the upper end of which protrudes beyond the upper end of the suspension rib 16, and a bevel gear 19 is fixed thereto.

Another bevel gear 2 that meshes with this bevel gear 19
0 is connected to a drive motor 22 via a pulley 21 and other transmission mechanisms.

A storage tank 2 is provided on the horizontal rib 14 to store a suitable fluid for re-slurrying the slurry by ejecting a jet A thereto.
3 is installed, and is connected to a high-pressure pump 25 via a pipe 24, and further connected to a pipe 26.

A flange joint 21 is fixedly installed at the other end of this pipe 26,
Furthermore, through the transport pipe 28 that penetrates inside the suspension lip 16,
The suspension rib 16 is connected to a reslurry device at the lower end.

The slurry discharge device at the lower end of the suspension rift is connected to a flange joint 30 at the upper part of the horizontal rib via a discharge pipe 29 penetrating inside the suspension rib, and further connected to a pipe 31 and a flange joint 32.
It is connected to above ground piping 33 via.

FIG. 3 shows the details of the re-slurry converting and unloading device. The lower end of the slurry pump drive shaft 18 is connected to an eccentric rotor 43 through a universal joint 42 in a slurry pump chamber 41 to drive a slurry pump 44. form,
The suction port 45 communicates with the discharge pipe 29 passing through the suspension rib 16 described above through the slurry pump 44, and is finally connected to the above-ground piping 33.

The suction surface of the suction port 45 is provided perpendicular to the axis of the rotor 43.

On the other hand, a gear 48 is fixed to the slurry pump drive shaft 18 in a gear box 47, and a gear 49 that meshes with the gear 48 drives a nozzle drive shaft 50. Gear 52 is fixed.

The fixed cylinder 51 is fixed to the upper outer periphery of the slurry pump chamber 41, while the sleeve 53 is fitted to the lower outer periphery of the slurry pump chamber 41, and between the inner periphery of the fixed cylinder 51 and the outer periphery of the sleeve 53. A rotary cylinder 55 is arranged via a pressure ring 54.

An external gear 56 is provided on the inner boss portion of the rotary cylinder 55 and meshes with the gear 52 at the lower end of the nozzle drive shaft 50, and one or more nozzles 51f are provided at appropriate positions on the outer boss portion.
:establish.

The inside of the fixed cylinder 51 and the rotating cylinder 55 are formed by the above-mentioned suspension rib 1.
The horizontal rib 14
The fluid in the storage tank 23 provided above is transferred to the high pressure pump 2
5 is fed under pressure.

The operation of the reslurry converting and unloading apparatus of the present invention having such a configuration will be explained.

The frame body 12 is moved and installed on the upper side of the tank 11 using a trolley 13, and the flange joint 32 is continued to connect the above-ground piping 3.
3 and a pipe 24 for carrying out the slurry.

The suspension rib 1 is driven by the drive motor 17 to drive the wheel 15.
6 is lowered and inserted into the slurry B of the tank 11.

Next, the flange joints of the piping 26 and the transport pipe 28 are combined to communicate the fluid transfer system, and the flange joints of the piping 31 and the delivery pipe 29 are combined to communicate the slurry discharge system, and furthermore, the bevel gear 19 and 20 are engaged to complete the device set-up.

When the drive motor 22 is operated in this state, the high pressure pump 2
5, an appropriate fluid in the storage tank 23 is forced through the piping, filling the fixed cylinder 51 and the rotating cylinder 55, and is injected into the slurry B from the nozzle 57 as a jet stream A.

At the same time, the drive motor 22 drives the slurry pump drive shaft 18.
is driven, gear 48 - gear 49 - nozzle drive shaft 50 -
The driving force is transmitted between the gear 52 and the external gear 56, and the rotating cylinder 55
is rotated around the slurry pump drive shaft 18.

Normally, this slurry pump drive shaft 18 and therefore the suspension rib 1
6 is vertically inserted into the tank 11, so that the nozzle 51 provided on the rotary tube 55 rotates along a plane parallel to the liquid level in the tank and sprays a jet of fluid to the tank 11. Re-slurry is performed by stirring the sedimentary slurry inside.

At the same time, the rotor 43 is rotated by the slurry pump drive shaft 18, and the re-slurry is sucked from the suction port 45 of the slurry pump 44, and is carried out from the discharge pipe 29 through the pipe 31 to the ground pipe 33.

After the slurry discharge operation is completed, the aforementioned bevel gears 19 and 20 are disengaged from each other and the flange joints 27 and 30 are disengaged, the suspension lip 16 is pulled upward and outward from the tank 11 by the drive motor 17, and then the above-ground piping 33 By separating the frame body 12 from the tank 11, the entire frame body 12 can be moved outside the tank 11.

Since the present invention is configured as described above, it has the following effects.

That is, (1) the fluid injection nozzle of the reslurrying device is rotatable along a plane parallel to the liquid level of the slurry in the tank, and the slurry discharging device is placed below the plane; Since an inlet surface is provided and this inlet surface is arranged parallel to the liquid level of the slurry, there is no other part of the reslurry device on the rotation plane of the nozzle, and the nozzle rotates on the rotation plane. Since the fluid is injected while the fluid is injected, there is no blind spot in the tank for the injection, and the entire tank can be reslurried efficiently.At the same time, the kinetic energy of the fluid injected from the nozzle can be used to stir the reslurry fluid. The entire amount can be used as energy for re-slurrying the contents without being reduced due to other factors, and even if the bottom of the tank is flat, the slurry can be taken out without any remaining amount. .

(2) Since the re-slurrying device and the slurry discharge device integrated with it can be lifted and moved outside the tank via a suspension lip, inspection, maintenance, repair, etc. of the device itself can be facilitated. .

(3) Since the tank, the re-slurrying device, and the slurry discharge device integrated therewith are independent from each other, it is possible to use an existing single-liquid tank for slurry.

(4) Since the device itself can be moved outside the tank, other operations other than re-slurrying or carrying out the tank can be performed without any hindrance.

(5) A single device can perform re-slurrying or unloading operations for multiple tanks.

(6) Since the reslurry device and the slurry discharge device are driven by the same drive system, the device can be made lighter and more compact.

(7) Because the drive devices for the reslurry device and the slurry discharge device were installed in the frame, they were installed outside the tank;
Even flammable slurries can be used without fear of explosion.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a conventional reslurry converting/carrying-out device, Fig. 2 is an overall view showing the re-slurry converting/carrying-out device according to the present invention installed in a tank, and Fig. 3 is a re-slurry converting/carrying-out device. FIG. 3 is a longitudinal cross-sectional view showing details of the device. 11... Tank, 16... Suspension lip, 44... Slurry pump. 51... Nozzle, A... Jet stream, B... Slurry〇

Claims (1)

[Claims] 1. A reslurry device that injects fluid into the settling slurry in the tank to reslurry it and a slurry discharge device that discharges this reslurry slurry outside the tank are driven integrally and simultaneously. The suspension lip is attached to a suspension lip as shown in FIG. The reslurrying device is configured to be movable outside the tank in a state in which the reslurrying device is configured to be able to rotate a fluid injection nozzle along a plane parallel to the liquid level of the slurry in the tank, and to An apparatus for reslurrying and discharging sedimentary slurry in a tank, characterized in that an inlet surface of the slurry discharge device is provided below, and the inlet surface is arranged parallel to the liquid level of the slurry.