Deep Sea Machinery - Hydraulic Hybrid Disc Pipe Ore Lifting and Conveying System

Abstract

The present invention discloses a deep-sea mechanical-hydraulic hybrid disc-pipe ore lifting and conveying system, comprising a discharge device on the sea level, a feeding device on the sea level, a conveying pipeline, a seabed feeding device, a seabed discharge device, a carrier, a mechanical drive mechanism and a rotary jet pump mechanism; the carrier comprises an upper disc, a lower disc and a connecting rod fixedly connecting the upper disc and the lower disc; a plurality of carriers are distributed in the conveying pipeline in a manner of end-to-end contact but without a rigid connection and can move along the axis of the conveying pipeline; the carriers can be out of contact under conditions such as large deformation of the conveying pipeline; the mechanical drive mechanism drives a certain carrier to move by a transmission pin, and causes all carriers to move in a closed-loop circulation along the axis of the conveying pipeline by having the subsequent carrier drive the previous carrier to move; the rotary jet pump mechanism comprises a water pump and a plurality of tangential water injection holes arranged on the outside of the conveying pipeline around the axis of the conveying pipeline.

Description

Technical Field

[0001] The present invention relates to the field of deep-sea mineral resource development, and in particular to a deep-sea mechanical-hydraulic hybrid disc-pipe ore lifting and conveying system for lifting and conveying three types of deep-sea ores: polymetallic sulfides, polymetallic nodules, and cobalt-rich crusts. Background Art

[0002] The rich mineral resources of the deep sea have attracted widespread attention from the international community. Deep-sea mineral resource development technology has advanced rapidly in recent years. A typical deep-sea mineral resource development system consists of a seabed mining vehicle, connecting hoses, a relay chamber, an ore hoisting and conveying system, and a surface support vessel. The development history of deep-sea mineral resource development shows that the main types of deep-sea mineral resource development systems include trailer-type mining systems, continuous chain-type mining systems, shuttle-type mining systems, and pipeline hoisting mining systems. Trailer-type mining systems, continuous chain-type mining systems, shuttle-type mining systems, and pneumatic mining systems are gradually being abandoned due to their low economic efficiency. Pipeline hoisting mining systems are further categorized by the hoisting method: hydraulic, pneumatic, and mechanical. Hydraulic hoisting systems use centrifugal pumps or positive displacement pumps as their power source to crush deep-sea ore, mix it with seawater, and then hoist it to sea level through a closed pipeline. Pneumatic hoisting systems inject high pressure into the pipeline, leveraging the buoyancy of air to hoist the ore.

[0003] Currently, research on hydraulic lifting and conveying systems is primarily underway both domestically and internationally, with prototype laboratory testing and sea trials conducted in environments similar to actual operations. However, hydraulic lifting and conveying systems suffer from shortcomings such as low efficiency, small ore particles (<20mm in diameter) that can be lifted, easy pipe clogging, and severe pump wear.

[0004] On the other hand, deep-sea ore hoisting pipelines are constantly exposed to environmental loads such as ocean currents and waves, as well as dynamic loads from surface support vessels. These loads subject the hoisting pipelines to periodic and aperiodic drag forces, heave forces, and vortex-induced vibrations, resulting in multiple vibration superposition phenomena: multimodal vibration, low-frequency vibration, high-order modal vibration, and large asymmetric deformation.

[0005] In response to the above problems, the Chinese patent "A Mechanical Mineral Extraction Device" (patent number: CN201610218511.X) discloses a mechanical mineral extraction device. This patent installs the mineral extraction device in a fixed pipeline, solving the problems of easy cable entanglement and mineral contamination of seawater in the continuous rope bucket mining system; the device is directly connected to the relay cabin and lifts ore from it, which improves efficiency; at the same time, no electrical equipment is required underwater, thereby improving the reliability of the system. This device does not have the risk of clogging of the lifting pump or pipeline in the hydraulic pipeline lifting system. However, the entire pipeline is connected to the collection bucket by a central cable. The cable has high resistance at the bend of the pipeline, and movement may be hindered; at the same time, the deep-sea operating environment is not taken into consideration. The various loads of wave flow will cause large deformation of the cylindrical pipeline, resulting in excessive deformation and tensile stress in the central cable, causing the cable to break. In addition, the device is discontinuous transportation, and the transportation efficiency is low. Summary of the Invention

[0006] In order to overcome the shortcomings of the above technical problems, the present invention proposes a deep-sea mechanical-hydraulic hybrid disc pipe ore lifting and conveying system with high efficiency, strong ability to adapt to large underwater deformation, low energy consumption and environmental protection.

[0007] The deep-sea mechanical-hydraulic hybrid disc pipeline ore lifting and conveying system of the present invention comprises a discharge device on the sea level, a feed device on the sea level, a conveying pipeline, a seabed feed device, a seabed discharge device, a carrier, a mechanical drive mechanism and a rotary jet pump mechanism;

[0008] The conveying pipeline has an annular structure, with some sections located above sea level and the rest located below sea level. The carrier includes an upper disc, a lower disc, and an intermediate connecting rod fixedly connecting the upper and lower discs, with a material-carrying area formed between the upper and lower discs. Several carriers are distributed in the conveying pipeline in a manner of end-to-end contact but without a rigid connection and can move along the axis of the conveying pipeline. The carriers move upward to lift and transport ore, and move downward to transport tailings. The carriers are independent of each other and have no connectors between them, which can adapt to the large deformation of the conveying pipeline under wave and current loads in the deep sea. The contact connection between the carriers can adopt mutually meshing protrusions and depressions, a detachable universal ball head structure, a male and female head connection with a snap, etc.

[0009] The mechanical drive mechanism includes two parallel belt / chain conveyors and a drive pin connected between the belts / chains of the two belt / chain conveyors. The mechanical drive mechanism propels the carrier along the axis of the conveying pipe via the drive pin, and all carriers move in a closed loop along the axis of the conveying pipe by having the subsequent carrier propel the preceding carrier. To ensure balanced force on the carriers, the mechanical drive mechanisms can be arranged in pairs and symmetrically distributed on both sides of the conveying pipe, thereby simultaneously propel the carriers via the two drive pins. In addition, the conveying pipe where the mechanical drive mechanism is arranged should be provided with a long opening for the drive pin to contact the lower disc of the carrier.

[0010] The rotary jet pump mechanism includes a water pump and a tangential water flow injection hole arranged on the outside of the conveying pipe around the axis of the conveying pipe; the tangential water flow injection hole is used to guide the high-pressure water flow from the water pump along the direction of the Archimedean spiral to be injected into the center of the conveying pipe to intersect, so as to push the fine particle slurry to concentrate toward the center of the pipe and drive the fine particle slurry to flow upward, thereby effectively reducing the friction loss of the transportation system during transportation and the friction between the ore particles and the pipe wall.

[0011] The seabed feeding device is used to intermittently transport a certain volume of ore that has been crushed and dehydrated in the relay cabin to the material carrying area of ​​the carrier underwater according to the volume between the upper disc and the lower disc of the carrier. The feeding volume is controlled by the impeller speed and the volume chamber volume in the seabed feeding device. The impeller is controlled by an underwater motor and a transmission mechanism, and rotates in the volume chamber. There is a feed port above the volume chamber and a discharge port below the volume chamber; the sea level discharge device sends the lifted coarse and fine particle slurry of ore into the surface support vessel to complete the unloading of the slurry; the sea level feeding device is used to intermittently transport a certain volume of tailings that have passed environmental protection treatment to the material carrying area of ​​the carrier on the surface support vessel according to the volume between the upper disc and the lower disc of the carrier. The feeding volume is controlled by the impeller speed and the volume chamber in the seabed feeding device. The impeller is controlled by an underwater motor and a transmission mechanism, and rotates in the volume chamber. There is a feed port above the volume chamber and a discharge port below the volume chamber. The tailings are transported to the seabed along the transporting carrier along the conveying pipeline and then discharged through the seabed discharging device.

[0012] Furthermore, adjacent carriers are connected via intermeshing protrusions and depressions. For example, a protrusion may be provided at the front end of the upper disc, and a depression may be provided at the rear end of the lower disc for engaging with the protrusion, or vice versa. The protrusions and depressions are both located in the center of their respective discs, aligned with the axis of the conveying pipe. The carriers of the present invention are preferably connected by intermeshing protrusions and depressions, which effectively transmit thrust between adjacent carriers. Furthermore, when the conveying pipe is subjected to complex loads and experiences significant deformation or vibration, the carriers can be disengaged from each other, making them easily separable, thus preventing the transfer of additional loads caused by significant pipe deformation between the carriers.

[0013] Furthermore, a sliding contact is formed between the outer circumferential surfaces of the upper and lower discs and the inner wall of the conveying pipe, that is, the edges of the upper and lower discs maintain contact with the inner wall of the conveying pipe, leaving only a very small gap to ensure sliding; in this way, when the pipeline is subjected to complex loads and exhibits large deformation or vibration, the disc structure of the carrier can support the pipeline and reduce deformation.

[0014] Furthermore, seawater holes are distributed on the upper disc, which allow seawater to pass through but prevent coarse ore particles from passing through. For example, the middle part of the upper disc can be designed as a spoke structure, with seawater holes between adjacent spokes. Alternatively, holes can be distributed on the upper disc to allow seawater to pass through. When the carrier moves along the conveying pipeline, the provision of seawater holes can effectively reduce its running resistance.

[0015] Furthermore, the pulley / sprocket of the belt / chain conveyor is driven by an underwater motor or hydraulic motor and a transmission mechanism.

[0016] Furthermore, the length of the belt / chain conveyor is at least 4 to 8 times the length of the carrier; the distance between two adjacent transmission pins in the mechanical drive mechanism is at least 1.2 times the spacing between the carriers along the axis of the conveying pipe, ensuring that only one carrier is directly pushed by the transmission pin at any time, avoiding energy loss and carrier loss caused by collision between carriers due to simultaneous contact between multiple transmission pins and multiple carriers.

[0017] Furthermore, when the conveying pipeline is subjected to large deformation due to complex environmental loads, the carriers can be separated from each other and distributed at intervals in the conveying pipeline; therefore, the connection between adjacent carriers should be a connection that is easy to separate; when the pipeline is greatly deformed, the carriers can be changed from being tightly arranged to being loosely distributed and dispersed in the conveying pipeline. The disc structure of the carrier can increase the bending modulus of the pipeline cross section, thereby reducing the deformation of the pipeline; in the event of a power outage or other emergency, the driving mechanism stops working, the carriers are arranged in the conveying pipeline, and remain in the current position. The ore is in the carrying area of ​​the carrier, and there is no situation where the pneumatic or hydraulic pipeline lifting system is shut down due to emergency power outage, resulting in slurry particles flowing back and blocking the ore lifting pump or pipeline.

[0018] Furthermore, the rotary jet pump mechanisms are distributed in multiple groups at intervals along the length direction of the conveying pipeline, and the distance between two adjacent rotary jet pump mechanisms is preferably 50 to 100 meters.

[0019] Furthermore, the mechanical drive mechanism is provided in several groups, preferably at intervals of 200 to 300 meters, and the layout position is not limited to the horizontal submarine pipeline section of the conveying pipeline, but can also be arranged at any position of the vertical pipeline. The optimal layout position of the mechanical drive mechanism includes but is not limited to the submarine feeding device, the bend position, the vertical pipeline interval of 200 to 300 meters, the discharge port at sea level, and the feed port at sea level.

[0020] Furthermore, the mechanical drive mechanism is used to lift and transport coarse ore particles in a slug flow, and the rotary jet pump mechanism is used to transport fine particle slurry.

[0021] Beneficial effects of the present invention: The deep-sea mechanical-hydraulic hybrid disc pipeline ore lifting and conveying system of the present invention arranges a continuous carrier in the conveying pipeline, drives the carrier through a mechanical drive mechanism to achieve the lifting of coarse ore particles from the seabed to the surface support vessel, and generates hydraulic power through a rotary jet pump to achieve the lifting of fine particle slurry, thereby realizing efficient lifting of deep-sea ore. Compared with the hydraulic lifting system, the volume ratio of ore can be increased from 15% to 35%, thereby improving the lifting and conveying efficiency; compared with the hydraulic lifting technology, the ore particle size that can be lifted is larger (>30cm), thereby reducing the deep-sea ore crushing process requirements; compared with the hydraulic lifting, the two processes of the system lifting ore upward and conveying tailings downward just offset the work done by gravity, and the energy consumption of lifting and conveying is low; compared with the hydraulic lifting, the system can reduce the amount of seawater lifted from the seabed to the surface support ship, reducing the cost of tailwater treatment and the impact of tailwater on the environment; the carrier adopts an easy-to-separate contact connection structure, which can effectively cope with the large deformation of the conveying pipeline under the influence of complex deep-sea environmental loads; in addition, the system's mechanical drive mechanism and rotary jet pump adopt a distributed layout, and the number and position of drives can be adjusted according to working conditions, lifting height, conveying volume, etc., which is an efficient, low-energy, and environmentally friendly deep-sea ore lifting and conveying system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an overall schematic diagram of the deep-sea mechanical-hydraulic hybrid disc pipeline ore lifting and conveying system of the present invention.

[0023] Figure 2 Schematic diagram of the mechanical drive mechanism of the deep-sea mechanical-hydraulic hybrid disc pipeline ore lifting and conveying system of the present invention.

[0024] Figure 3 This is a schematic diagram of a carrier of the deep-sea mechanical-hydraulic hybrid disc-pipe ore lifting and conveying system of the present invention.

[0025] Figure 4 This is a schematic diagram of the operation of the carrier of the deep-sea mechanical-hydraulic hybrid disc pipeline ore lifting and conveying system of the present invention.

[0026] Figure 5 This is a schematic diagram of the mutual engagement of carriers of the deep-sea mechanical-hydraulic hybrid disc pipeline ore lifting and conveying system of the present invention.

[0027] Figure 6 This is a schematic diagram of the arrangement of carriers in a curved pipeline of the deep-sea mechanical-hydraulic hybrid disc pipeline ore lifting and conveying system of the present invention.

[0028] Figure 7 This is a schematic diagram of the slack distribution of the carrier of the deep-sea mechanical-hydraulic hybrid disc pipe ore lifting and conveying system of the present invention.

[0029] Figure 8 This is a schematic diagram of the tangential water flow injection hole of the deep-sea mechanical-hydraulic hybrid disc pipe ore lifting and conveying system of the present invention.

[0030] In the figure: 1-discharging device on sea level; 2-transmission pipeline; 3-seabed feeding device; 4-mechanical driving mechanism; 5-seabed discharging device; 6-carrier; 7-seabed feeding device; 8-jet pump mechanism; 11-connecting rod; 12-lower disc; 13-upper disc; 14-protrusion; 15-recessed body; 21-pulley; 22-belt; 23-drive pin; 24-jet water injection hole.

[0031] like Figure 1 As shown, the deep-sea mechanical-hydraulic hybrid disc pipeline ore lifting and conveying system of the present invention includes a discharge device 1 on the sea level, a feeding device 7 on the sea level, a conveying pipeline 2, a seabed feeding device 3, a seabed discharge device 5, a carrier 6, a mechanical drive mechanism 4 and a rotary jet pump mechanism 8;

[0032] The pipeline 2 is an annular structure, with some sections located above sea level and others below. The pipeline 2 is coated with an anti-corrosion coating and has a design life of no less than 20 years. Its structural strength should meet the requirements of API RP2RD, API RP16Q, API Spec17J, and API RP1111, with a safety factor greater than 1.5 in a 100-year return environment. The inner wall of the pipeline and the side surfaces of the carrier must undergo a metal surface hardening treatment to ensure good wear resistance.

[0033] like Figure 3 As shown, the carrier 6 includes an upper disc 13, a lower disc 12 and a connecting rod 11 fixedly connecting the upper disc 13 and the lower disc 12. The length of the connecting rod 11 depends on the turning radius of the bend of the conveying pipeline 2. Preferably, the length of the connecting rod 11 makes the angle between the axes of two adjacent carriers at the bend not exceed 2 degrees, and a material carrying area is formed between the upper disc 13 and the lower disc 12. The upper disc 13 in this embodiment is designed with a water hole to allow seawater to pass through, reducing the movement resistance of the carrier. When the carrier 6 moves along the conveying pipeline 2, the setting of the seawater hole can effectively reduce its running resistance. Several of the carriers 6 are distributed in the conveying pipeline 2 in a manner that forms a ring chain structure with end-to-end contact and can move along the axis of the conveying pipeline 2. Figure 5 As shown, the adjacent carriers 6 are connected by a protrusion 14 and a depression 15 that engage with each other. In this embodiment, a protrusion 14 is provided at the front end of the upper disc 13, and a depression 15 that engages with the protrusion 14 is provided at the end of the lower disc 12. The protrusion 14 and the depression 15 are both located in the center of the disc, aligned with the axis of the conveying pipe 2. This type of meshing contact connection can effectively transmit thrust between adjacent carriers 6. At the same time, Figure 6 As shown, the carrier 6 can also engage at a certain angle in the curved section of the conveying pipe 2 by means of the protrusion 14 and the depression 15 on the disc structure and effectively transmit the force applied by the mechanical drive mechanism 4 to the carrier 6 in sequence. Figure 7 As shown, when the conveying pipeline 2 is subjected to large deformation due to environmental loads, the contacting protrusions 14 and recesses 15 can be separated from each other and changed from a close arrangement to a loose distribution, and dispersed in the conveying pipeline 2, and a sliding contact is formed between the outer circular surfaces of the upper disc 13 and the lower disc 12 and the inner wall of the conveying pipeline 2, that is, the edges of the upper and lower discs 12 are kept in close contact with the inner wall of the conveying pipeline 2, leaving only a very small gap, preferably 0.5% to 1% of the inner diameter of the conveying pipeline; in the event of a power outage or other emergency, the driving mechanism stops working, the carrier 6 is dispersedly arranged in the conveying pipeline 2, and remains in the current position, the ore is in the bearing area of ​​the carrier 6, and there is no situation in the pipeline lifting method where the slurry particles flow back and block the ore pump or the conveying pipeline due to emergency pump shutdown due to power outage.

[0034] like Figure 2 and 4 As shown, the mechanical drive mechanism 4 includes two parallel belt / chain conveyors and a transmission pin 23 connected between the belts / chains 22 of the two belt / chain conveyors; the mechanical drive mechanism 4 pushes the carrier 6 along the axis of the conveying pipe 2 through the transmission pin 23, and all carriers 6 move in a closed loop along the axis of the conveying pipe 2 by having the subsequent carrier 6 push the previous carrier 6; the belt / chain conveyor includes two pulleys 21 and a belt / chain 22 connected between the two pulleys / sprockets 21, and the pulleys / sprockets 21 are driven by a special underwater motor; to ensure that the carriers 6 can be balanced in force, the mechanical drive mechanism 4 can be arranged in pairs and symmetrically distributed on both sides of the conveying pipe 2, so that the two transmission pins 23 can simultaneously push the carrier 6 to move. In addition, the conveying pipe 2 where the mechanical drive mechanism 4 is arranged should be provided with a long opening for the transmission pin 23 to contact the lower disc 12 of the carrier 6. The housing of the drive mechanism 4 seals the drive mechanism and the pipe 2 to ensure that material cannot leak from the system. The length of the belt / chain conveyor is at least 4 to 8 times the length of the carrier 6. The distance between two adjacent drive pins in the mechanical drive mechanism is at least 1.2 times the distance between the carriers along the axis of the conveying pipeline. This ensures that only one carrier is directly driven by the drive pins at any given time, preventing collisions between carriers caused by simultaneous contact between multiple drive pins and multiple carriers, resulting in energy loss and damage to the carriers. The mechanical drive mechanism 4 can be located between the subsea discharge device 5 and the subsea feed device 3, but its placement is not limited to the subsea pipeline section, and its location and number are not fixed. The number and location of the drives can be configured as needed.

[0035] like Figure 8 As shown, the rotary jet pump mechanism 8 includes a water pump 24 and an injection pipe 25 arranged on the outside of the pipeline 2 around the axis of the pipeline 2; the water pump draws seawater from outside the pipeline and sends pressurized seawater into the injection pipe 25; the injection pipe 25 wraps around the pipeline 1 to 2 times in the direction of the Archimedean spiral, and injects seawater into the pipeline 2 through the injection hole, pushing the slurry to concentrate toward the center of the pipeline and driving the fine particle slurry to flow upward. In this embodiment, the rotary jet pump mechanism 8 is distributed in the underwater part of the pipeline 2 at intervals of about 50 to 100 meters, which can effectively reduce the friction between the coarse ore particles and the carrier and the pipe wall as well as the fluid resistance during transportation.

[0036] The seabed feeding device 3 is used to transport the ore that has been crushed and dehydrated in the relay chamber to the material carrying area of ​​the carrier 6 underwater, and the sea level discharging device 1 sends the lifted slurry into the surface support system to complete the unloading of the ore; the sea level feeding device 7 is used to transport the environmentally treated tailings on the surface support ship to the material carrying area of ​​the carrier 6, and the seabed discharging device 5 is used to unload the tailings into the seawater on the seabed.

[0037] The specific method for ore hoisting using the hoisting and conveying system of this embodiment is as follows: First, crushed and dewatered ore is fed into the conveying pipeline 2 through a seabed feeder 3, causing the ore to fall into the material-carrying area of ​​a carrier 6. The carrier 6 is propelled by a mechanical drive mechanism 4, which engages with each other through protrusions 14 and depressions 15, transmitting thrust in sequence, carrying the ore and achieving a closed-loop circulation along the conveying pipeline 2. The selective pump mechanism 8 extracts seawater from outside the pipeline and injects it into the pipeline, lifting and conveying fine-grained slurry. Together with the carrier, the ore is hoisted to a surface support vessel, and finally discharged from a discharge device 1 above sea level. After processing in the surface support system, the hoisted ore is converted into industrially valuable nodules and worthless tailings. The tailings are fed into the pipeline by a feeder above sea level, transported along the conveying pipeline 2 to the seabed, and then discharged by a seabed discharge device 5 through the seabed discharge pipeline into a tailings disposal tank. The entire system operates in a closed-loop circulation, achieving continuous transportation for deep-sea mineral resource development operations.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A deep-sea mechanical-hydraulic hybrid disc-pipe ore hoisting and conveying system, characterized by: It includes a discharging device on the sea level, a feeding device on the sea level, a conveying pipeline, a seabed feeding device, a seabed discharging device, a carrier, a mechanical driving mechanism and a rotary jet pump mechanism; The conveying pipeline is annular in structure, with some sections located above sea level and the rest located below sea level; The carrier includes an upper disc, a lower disc, and an intermediate connecting rod for fixing the upper and lower discs, and a material carrying area is formed between the upper and lower discs; a plurality of the carriers are distributed in the conveying pipeline in a form of end-to-end contact but without rigid connection and can move along the axis of the conveying pipeline; The mechanical drive mechanism includes two parallel belt / chain conveyors and a transmission pin connected between the belts / chains of the two belt / chain conveyors; the mechanical drive mechanism drives the carrier to move along the axis of the conveying pipe through the transmission pin, and transmits driving force by the subsequent carrier pushing the previous carrier to move, so that all carriers move in a closed loop along the axis of the conveying pipe; The jet pump mechanism includes a water pump and a tangential water flow injection hole arranged on the outside of the delivery pipeline around the axis of the delivery pipeline; the tangential water flow injection hole is used to guide the high-pressure water flow from the water pump along the direction of the Archimedean spiral to be injected into the center of the delivery pipeline to meet, so as to push the fine particle slurry to concentrate toward the center of the pipeline and drive the fine particle slurry to flow upward; The seabed feeding device is used to transport the ore that has been crushed and dehydrated in the relay chamber to the material carrying area of ​​the carrier underwater, and control the volume of the fed ore not to exceed the carrying capacity of the carrier; the sea level discharging device sends the lifted coarse-grained ore and fine-grained slurry into the surface support vessel to complete the unloading of the slurry; the sea level feeding device is used to transport the tailings that have passed environmental protection treatment on the surface support vessel to the material carrying area of ​​the carrier, and control the volume of the fed ore not to exceed the carrying capacity of the carrier; the seabed discharging device is used to unload the tailings into the seawater on the seabed.

2. The deep-sea mechanical-hydraulic hybrid disc-pipe ore hoisting and conveying system according to claim 1 is characterized by: The two adjacent carriers are connected by protrusions and depressions that are meshed with each other but not rigidly connected. The two carriers can be separated from each other when there is a speed difference between them.

3. The deep-sea mechanical-hydraulic hybrid disc-pipe ore hoisting and conveying system according to claim 1 is characterized by: The outer circumferential surfaces of the upper disc and the lower disc form a sliding contact fit with the inner wall of the conveying pipe.

4. The deep-sea mechanical-hydraulic hybrid disc-pipe ore hoisting and conveying system according to claim 1 is characterized by: Seawater holes are distributed on the upper disc, and the seawater holes allow seawater to pass through, but prevent coarse ore particles from passing through.

5. The deep-sea mechanical-hydraulic hybrid disc-pipe ore hoisting and conveying system according to claim 1 is characterized by: The pulleys / sprockets of the belt / chain conveyor in the mechanical drive mechanism are driven by underwater motors or hydraulic motors.

6. The deep-sea mechanical-hydraulic hybrid disc-pipe ore hoisting and conveying system according to claim 1 is characterized by: The length of the belt / chain conveyor is at least 4 to 8 times the length of the carrier; the distance between two adjacent transmission pins in the mechanical drive mechanism is at least 1.2 times the distance between the carrier along the axis of the conveying pipe.

7. The deep-sea mechanical-hydraulic hybrid disc-pipe ore hoisting and conveying system according to claim 1 is characterized by: When the conveying pipeline is subjected to complex loads and undergoes large deformation, the adjacent carriers can be separated from each other and distributed at intervals in the conveying pipeline.

8. The deep-sea mechanical-hydraulic hybrid disc-pipe ore hoisting and conveying system according to claim 1 is characterized by: The rotary jet pump mechanisms are distributed in multiple groups at intervals along the length direction of the conveying pipeline, and the distance between two adjacent rotary jet pump mechanisms is 50 to 100 meters.

9. The deep-sea mechanical-hydraulic hybrid disc-pipe ore hoisting and conveying system according to claim 1 is characterized by: The mechanical drive mechanisms are arranged in several groups, and adjacent mechanical drive mechanisms are spaced 200 to 300 meters apart.

10. The deep-sea mechanical-hydraulic hybrid disc-pipe ore hoisting and conveying system according to claim 1 is characterized in that: The mechanical drive mechanism is used to lift and transport coarse ore particles in a slug flow, and the rotary jet pump mechanism is used to transport fine particle slurry.

Images