JPS6238520B2 - - Google Patents

Description

Detailed Description of the Invention The present invention is intended to prevent mineral grains from settling and clogging the pipe due to an abnormal condition of the ore lifting equipment, etc., in the ore lifting pipe in which seabed mineral resources are lifted by air or a pump. , relates to a mineral particle discharge device for discharging settling mineral particles to the outside of a tube.

As one of the conventional techniques for discharging mineral grains that settle in the ore lifting pipe due to an abnormal condition of the ore lifting equipment, etc., as shown in Japanese Patent Application Laid-Open No. 108803/1983, a branch pipe type is used. The sedimentation phenomenon of mineral grains is automatically detected, and the dump valve switching cylinder is automatically stopped in response to the detection signal. After the mineral grains are discharged, no power is required, and the water flow in the pipe is activated by the pump. There is one that returns the dump valve to its normal position.

However, this has the following drawbacks.

Although automatic vanes exist, they may cause unstable behavior due to tilting of the entire device during use.

Each behavior part exists in a pipe in which mineral grains flow,
There is a possibility that the device may be damaged or become inoperable due to collision with mineral particles.

Therefore, in order to eliminate the above-mentioned drawbacks, the present invention has the following features:
The purpose is to eliminate the vanes mentioned above and to prevent damage to the moving parts.

In order to achieve this object, the present invention provides an inner pipe that connects to the ore lifting pipe and an outer pipe that seals and covers the inner pipe, and forms an outer pipe opening in the side wall of the outer pipe. A sealed opening/closing door that opens and closes is provided, an inner tube opening facing the outer tube opening is formed in a side wall of the inner tube, and the opening/closing door is interlocked with the opening/closing door by an interlocking device disposed at a location other than the inside of the inner tube, and the When the opening/closing door opens, the inner tube opening is opened and the inner tube portion below the inner tube opening is closed, and when the opening/closing door is closed, the inner tube opening is closed and the inner tube opening is closed. It is equipped with a mineral particle discharge door that communicates with the inner pipe.

Therefore, only the mineral particle discharge door exists inside the inner pipe through which the mineral particles flow, and other operating parts including the interlocking device exist outside the inner pipe, so there is no possibility of damage to the device or malfunction due to collisions with mineral particles. can be prevented from becoming possible,
Moreover, by eliminating the conventional vanes, unstable behavior can be prevented.

Examples of the present invention will be described below. In FIG. 1, reference numeral 1 denotes an ore lifting pipe sunk from a ship 2 on the sea, and by the action of a pump 3, mineral grains 5 such as manganese nodules from the seabed 4 are sucked up from a suction portion Ia. Mineral grain discharge device 6 according to the present invention
is installed in the middle of this ore lifting pipe 1.

In FIG. 2 showing the external appearance of the apparatus 6, 7 is an inner pipe connected to the ore lifting pipe 1, and is partially covered by an outer pipe 8 in a sealed state. As shown in FIGS. 4 and 5, an outer tube opening 9 is formed in the side wall of the outer tube 8, and this outer tube opening 9 is connected to the underwater motor 1.
0 and a closed door 12 that is opened and closed by a speed reducer 11. 13 is a sealing material, 14
15 is a balance weight, and 15 is a tachometer attached to the rotating shaft 16 to detect the opening degree of the door 12. Moreover, screws 17 and 18 (flanges or other pipe joints may also be used) are formed at the upper and lower ends of the inner pipe 7 so as to be connected to the ore lifting pipe 1.

FIG. 3 shows the inner tube 7 portion. Inner tube 7
As shown in FIG. 4, an inner tube opening 19 corresponding to the outer tube opening 9 is formed in the side wall of the tube. 20
As shown in FIGS. 4 and 6, a mineral particle discharge door is swingable around a pin 21, and has a tongue shape with a curvature corresponding to the inner wall of the inner tube 7.
Therefore, this mineral particle discharge door 20 closes the inner tube opening 19 as if it forms a part of the tube wall of the inner tube 7 in the closed state, and also allows the inner tube 7 to communicate with it. . In addition, in the inward open state, the inner tube opening 19 is opened, and this opening 19
This is to close off a portion of the inner tube 7 below. For this reason, the mineral grain discharge door 20 has a tongue-like shape so that its end can align with and come into contact with the inner wall of the inner tube 7 when opened inward.

The mineral particle discharge door 20 is interlocked with the closed opening/closing door 12. The interlocking device 22 for this purpose will be explained with reference to FIGS. 4 to 6. That is, a pair of connecting rods 24 are connected to the inner side of the opening/closing door 12 via a damper 23.
is attached diagonally upward, and each connecting rod 2
4 is connected to an upward connecting rod 25. A roller 26 is disposed at this connection portion, and a pair of guide members 27 and 28 on both sides guide the roller 26 in the vertical direction, so that the connecting rod 25 can move up and down. The guide members 27 and 28 are fixed to the outer wall of the inner tube 7. On the other hand, 29 is a lever that can swing around a pin 21 integrally with the mineral particle discharge door 20, and has a pin 31 that engages with a vertically elongated hole 30 formed in the lower part of the connecting rod 25. The pin 31 is in contact with the lower end of the elongated hole 30 when both doors 12 and 20 are closed. Reference numeral 32 is a tension spring connected to this lever 29 to urge the mineral particle discharge door 20 to close.

As shown in the figure, the outer tube 8 portion that accommodates the interlocking device 22 can be made larger in diameter than other portions to expand the housing space, and the tension spring 3 shown in the figure can also be
Instead of 2, the mineral particle discharge door 20 may be urged to close by a suitable compression spring.

The discharge operation of the five groups of mineral grains will be explained based on FIG. 7.

(a) Anomalies in the ore lifting pipe 1 (for example, stoppage of the ore flow due to functional deterioration of the ore lifting equipment, occurrence of abnormal negative pressure in the pipe due to blockage, etc.) can be detected using an in-pipe current meter located downstream of this device 6, It is detected by a pressure gauge (not shown) or the like, and based on the detection signal, the underwater motor 10 is turned and the sealed opening/closing door 12 begins to open.

(b) The underwater motor 10 rotates and the closed door 12 opens.
When the connecting rod 24 is opened and the connecting rod 24 is pulled outward, the connecting rod 25 begins to descend as the rollers 26 move along the guide members 27 and 28. However, due to the action of the elongated hole 30, the mineral particle discharge door 20 does not open immediately, and the sealed opening/closing door 12 is fully opened before the mineral particle discharge door 20 opens.

(c) As the rotation of the underwater motor 10 further progresses, the sealed opening/closing door 12 opens wide, and the upper end of the elongated hole 30 begins to push the pin 31, opening the mineral particle discharge door 20 to the inside of the inner tube 7. In this state, the 5 groups of mineral grains that have settled in the inner pipe 7 are discharged from the ore lifting pipe 1. Here, the damper 23 acts so as to sufficiently contact the inner pipe 7 after the mineral particle discharge door 20 is opened, and also serves to ensure that the underwater motor 1
It acts to absorb the transmission of force due to a slight increase in zero rotation.

(d) When the discharge of the 5 groups of mineral grains is completed, the in-pipe mineral concentration meter installed on the downstream side of the device 6 issues a signal indicating the completion of discharge. Upon receiving this signal, underwater motor 1
0, both doors 12 and 20 begin to close. That is, the sealed opening/closing door 12 is operated by the underwater motor 10, and the mineral particle discharge door 20 is operated by the spring 3.
They each close due to the reaction force of 2.

(e) Whether or not the hermetic opening/closing door 20 has been sufficiently closed can be checked using the tachometer 15. In addition, the mineral grain discharge door 20
, the lever 29 is pushed up by the tension spring 32, and if the hermetic opening/closing door 12 is sufficiently closed, the pin 31 is pushed up by the lower end of the elongated hole 30, so that it is completely closed. This will allow ore lifting to resume.

As described above, in the present invention, the mineral particle discharge door 20 has a function of discharging the mineral particles 5 in the inner tube 7, and the sealing type opening/closing door 12 has a function of sealing the device 6 from the outside. By distributing both functions to separate doors, it is possible to ensure that both functions are performed separately. Further, according to the embodiment described above, since the completion of discharge can be reliably detected by the tachometer 15, it is possible to clearly determine the point in time for restarting ore lifting.

As described above, according to the present invention, only the mineral particle discharge door is present in the inner tube through which mineral particles flow, and other movement parts including the interlocking device are present outside the inner tube, so mineral particles collide. It is possible to prevent damage to the device or the device becoming unable to operate due to this, and furthermore, by abolishing the conventional vanes, unstable behavior can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an outline of an ore lifting device, Fig. 2 is an external view of an embodiment of the present invention, Fig. 3 is a diagram showing an inner pipe portion, Fig. 4 is a diagram showing a movement device, and Fig. 5 is a diagram showing an outline of an ore lifting device. The figure is number 4
FIG. 6 is a cross-sectional view of FIG. 4, and FIGS. 7 a to 7 e are diagrams showing operating states. DESCRIPTION OF SYMBOLS 1...Ore lifting pipe, 6...Mineral grain group discharge device, 7...Inner pipe, 8...Outer pipe, 9...Outer pipe opening, 12...Hermetically sealed opening/closing door, 19...Inner pipe opening, 20...Mineral particle discharge door, 22
...Interlocking device.

Claims (1)

[Claims] 1. A mineral particle group discharge device installed in the middle of an ore lifting pipe that lifts seabed mineral resources, which is equipped with an inner pipe that connects to the ore lifting pipe and an outer pipe that seals and covers this inner pipe. While forming an outer tube opening on the tube side wall,
A sealed opening/closing door for opening and closing the outer tube opening is provided, an inner tube opening facing the outer tube opening is formed in the inner tube side wall, and the opening/closing door is controlled by an interlocking device disposed at a location other than the inside of the inner tube. When the opening/closing door opens, the inner tube opening is opened and the inner tube portion below the inner tube opening is closed, and when the opening/closing door is closed, the inner tube opening is closed. A mineral particle discharge device characterized in that a mineral particle discharge door is provided which closes the inner pipe and communicates with the inner pipe.