A mining system with a bottom-mounted relay station

Abstract

The invention discloses a mining system with a bottom-mounted relay station; it belongs to the technical field of deep-sea mining, and comprises a bottom-mounted relay station, a mining robot, a sediment spray pump robot, a surface support vessel, a multi-stage pump, a rigid riser, a flexible hose and other equipment; the invention fixes the connecting end of the relay station, improves the rigidity of the riser, reduces the movement deflection of the riser under the action of the ocean current and improves the smoothness of the flow in the pipe; through the separation design, the mass of the seabed mining robot is reduced, so as to reduce the disturbance of the robot movement to the seabed sediments; the principle of flocculation by reaction of biological flocculants with sediments is adopted, so as to reduce the diffusion of sediment backflow and avoid the occurrence of plume flow to a great extent.

Description

Technical Field

[0001] The invention belongs to the technical field of deep-sea mining and relates to a mining system with a bottom-mounted relay station. Background Art

[0002] With the rapid development of society, the demand for mineral resources is increasing day by day, while the reserves and types of terrestrial minerals are decreasing. Therefore, people have turned their attention to the vast oceans rich in mineral resources. Therefore, research in the field of deep-sea mining has received widespread attention from the academic community. However, the traditional long-distance pipeline system has large movement deflection under the action of ocean currents, and fluidity is difficult to be well guaranteed. At the same time, the seabed sediments in deep-sea mining areas have high water content and small particle size, which are extremely easy to be disturbed and spread, polluting the marine ecology, which is one of the main reasons restricting the development of deep-sea mining. Summary of the invention

[0003] In view of the above problems, the purpose of the present invention is to propose a mining system with a bottom-mounted relay station. The present invention improves the stiffness of the riser, reduces the deflection of the riser movement, and improves the flow performance in the pipe; at the same time, the bottom-mounted relay station has better load-bearing performance, and can reasonably integrate technical means such as ore and sediment separation, ore crushing, and sediment flocculation to provide a technical solution with good transport fluidity and environmental friendliness for deep-sea mining.

[0004] The technical solution of the present invention is: a mining system with a bottom-mounted relay station according to the present invention comprises a seabed of a seabed mining area, and also comprises a bottom-mounted relay station (1), a plurality of mining robots (2), a sediment spray pump robot (3), a surface support vessel (4), a multi-stage pump (5), a rigid riser (6) and a flexible hose (7);

[0005] The bottom-mounted relay station (1) is fixedly installed on the seabed of a seabed mining area, and a flexible hose (7) is installed between the bottom-mounted relay station (1) and a plurality of mining robots (2) and a sediment spray pump robot (3), and the plurality of mining robots (2) and sediment spray pump robots (3) are respectively connected to the bottom-mounted relay station (1) via the flexible hose (7);

[0006] A rigid riser (6) is arranged on the bottom-mounted relay station (1), and a multi-stage pump (5) is connected to the rigid riser (6);

[0007] A surface support vessel (4) is arranged at the top of the rigid riser (6), and the bottom-mounted relay station (1) is connected to the surface support vessel (4) via a multi-stage pump (5) and a rigid riser (6) arranged thereon.

[0008] Furthermore, the bottom-mounted relay station (1) comprises interconnected ore and sediment separation cabins (11), ore crushing cabins (12), ore storage cabins (13), robot and hose storage and control cabins (14), a control center (15) and sediment flocculation cabins (16);

[0009] The ore and sediment separation cabin (11), the robot and the hose storage and control cabin (14) are connected to the mining robot (2) via a flexible hose (7).

[0010] The ore storage cabin (13) is connected to the rigid riser (6);

[0011] A pipe pump system is installed in the ore and sediment separation cabin (11), the ore crushing cabin (12), the ore storage cabin (13), the robot and hose storage control cabin (14), the control center (15) and the sediment flocculation cabin (16);

[0012] A pipe retracting and unretracting machine (140) is also arranged inside the robot and hose storage and control cabin (14);

[0013] The control center (15) is connected to the surface support vessel (4) and the installed underwater working components via wireless.

[0014] Furthermore, the ore and sediment separation cabin (11) comprises a cabin wall (111), a truss slide rail (112) is arranged inside the cabin wall (111), and the truss slide rail (112) is longitudinally arranged on the cabin wall (111).

[0015] A mobile mine entrance (113) is movably arranged on the truss slide rail (112); the upper end of the mobile mine entrance (113) is connected to the mining robot (2) via a flexible hose (7) wound on a pipe retracting and unretracting machine (140), and can move back and forth at a constant speed on the truss slide rail (112);

[0016] A three-stage electric screen (114) is arranged inside the ore and sediment separation cabin (11), at the lower end of the truss slide rail (112) and the movable ore inlet (113), and the three-stage electric screen (114) is divided into screens with mesh sizes from coarse to fine and arranged alternately and tilted on the cabin wall (111);

[0017] A sediment pump outlet (116) is provided on the side of the separation cabin bulkhead (111), with a total of three openings, which are arranged alternately with the three sections of mesh screens on the three-stage electric mesh screen (114), and the sediment pump outlet (116) is connected to the sediment flocculation cabin (16) through a pipe pump system;

[0018] A track groove is provided on the bulkhead (111) of the other side of the separation cabin, a transport track (115) is arranged in the track groove, and a leakproof partition is arranged on the transport track (115).

[0019] Furthermore, the ore crushing cabin (12) comprises a crushing cabin wall (121), a crushing ore inlet (122) is provided on the crushing cabin wall (121), and the crushing ore inlet (122) is connected to the top of the transport crawler (115);

[0020] Two ore crushing rotating shafts (123) are arranged inside the ore crushing chamber (12). The ore crushing rotating shafts (123) are longitudinally penetrated and arranged in the ore crushing chamber (12), and ore crushing gear rollers (124) are fixedly connected to the outside of the ore crushing rotating shafts (123).

[0021] Two movable bottom leakage plates (125) are also arranged inside the ore crushing chamber (12). The movable bottom leakage plates (125) are arranged to penetrate the ore crushing chamber (12) longitudinally and are located at the bottom of the ore crushing shaft (123) and the ore crushing gear roller (124). The two movable bottom leakage plates (125) on the left and right are arranged at an angle to form a ore crushing outlet (127).

[0022] Two leakage plate chutes (126) are symmetrically arranged on the inner wall of the crushing chamber wall (121); one end of the movable bottom leakage plate (125) is respectively connected to the two leakage plate chutes (126) and periodically moves up and down along the leakage plate chutes (126).

[0023] Furthermore, the ore storage cabin (13) is arranged at the lower part of the ore crushing cabin (12), and comprises an ore storage cabin bulkhead (131) and an ore lifting pipe (132) connected to one end of the ore crushing cabin (12), wherein the ore storage cabin bulkhead (131) constitutes a storage space, and the ore lifting pipe (132) is connected to an opening on the side of the ore storage cabin bulkhead (131) through a flange, and a connected ore lifting pump (133) is arranged at the ore lifting pipe (132).

[0024] Furthermore, the pipeline retracting and unretracting machine (140) comprises an upper limit plate (141) and a lower limit plate (142).

[0025] An electric roller (143) is arranged between the upper limit plate (141) and the lower limit plate (142), and the flexible hose (7) is wound around the electric roller (143).

[0026] The upper limit plate (141), the lower limit plate (142) and the electric roller (143) together constitute the main body of the arrangement structure of the flexible hose (7);

[0027] A cabin interface (144) and a robot interface (145) are respectively provided on the flexible hose (7), and the flexible hose (7) is respectively connected to the mining robot (2), the sediment spray pump robot (3) and the bottom-mounted relay station (1) through the cabin interface (144) and the robot interface (145).

[0028] Furthermore, the flexible hose (7) comprises a hose anti-corrosion and wear-resistant outer wall (71) arranged at the outermost side and a hose anti-corrosion and wear-resistant inner wall (72) arranged at the innermost side, and a low-density high-strength buoyancy filling layer (75) and a high-strength skeleton filling layer (76) are arranged between the hose anti-corrosion and wear-resistant outer wall (71) and the hose anti-corrosion and wear-resistant inner wall (72) arranged at the innermost side;

[0029] An embedded cable (73) and an embedded optical fiber (74) are also arranged inside the flexible hose (7).

[0030] Furthermore, the hose anti-corrosion and wear-resistant outer wall (71) and the hose anti-corrosion and wear-resistant inner wall (72) are both made of anti-corrosion and wear-resistant materials;

[0031] The material of the low-density and high-strength buoyancy filling layer (75) is composed of low-density and high-strength filling material;

[0032] The material of the high-strength skeleton filling layer (76) is composed of high-strength and high-toughness materials.

[0033] Furthermore, the control center (15) includes a signal processing module (151), a computer (152) and a controller (153) which are interconnected by wires;

[0034] The signal processing module (151), computer (152) and controller (153) are respectively connected to the mining robot (2), sediment spray pump robot (3), pipeline retracting machine (140), ore and sediment separation cabin (11) and ore crushing cabin (12).

[0035] Furthermore, the mining robot (2) comprises a ore collecting head (21), the ore collecting head (21) comprises a ore collecting head shell (211), and a ore collecting head ore delivery port (212) and a ore collecting head ore inlet (213) are respectively provided at two ends of the ore collecting head shell (211);

[0036] Walking tracks (22) are respectively arranged at both ends of the ore collecting head (21), and walking connecting rods (23) are arranged between the ore collecting head (21) and the walking tracks (22) on both sides;

[0037] The ore collection head ore delivery port (212) is connected to the movable ore inlet (113) of the ore and sediment separation cabin (11) through a pipe pump system installed via a flexible hose (7) wound on a pipe retractor (140).

[0038] The basic principles of the present invention are: 1. By changing the connection mode of the rigid riser (the traditional solution is that the connection end of the relay station is free, while the present invention is that the connection end of the relay station is fixed), the rigidity of the riser is improved to reduce the movement deflection of the riser under the action of the ocean current to improve the smoothness of the flow in the pipe; 2. The present invention reduces the mass of the seabed mining robot through a separate design to reduce the disturbance of the robot's movement to the seabed sediments; 3. The present invention adopts the principle of flocculation by the reaction of biological flocculants with sediments, which reduces the diffusion of sediment backflow and largely avoids the occurrence of plume flow.

[0039] The beneficial effects of the present invention are as follows: The features of the present invention are as follows: 1. The present invention adopts a bottom-mounted relay station solution, which greatly improves the rigidity of the rigid riser and is beneficial to the stability of the flow in the pipe; 2. The present invention realizes the seabed separation of ore and sediment through the structure of the bottom-mounted relay station, so that the sediment content of the tailings of the mine is greatly reduced. At the same time, through the flocculation technology, the sediment diffusion is avoided, and the sediment is pumped to the seabed by a sediment spray pump robot, which greatly reduces the harm to the ecology caused by the sediment disturbance to form a plume flow; 3. The present invention integrates the ore screening and crushing process on the seabed relay station through the bottom-mounted relay station, reduces the mass and size of the mining robot, has lower disturbance and more flexible control; at the same time, the ore is crushed on the seabed, which reduces the particle size of the ore, makes the ore particles more fluid during transportation and avoids blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 It is a structural schematic diagram of the bottom-mounted relay station in the present invention;

[0042] Figure 3 It is a flow chart of the arrangement of the bottom-mounted relay station in the present invention;

[0043] Figure 4 This is a structural diagram of the robot and the hose storage and control cabin in the bottom-mounted relay station of the present invention;

[0044] Figure 5 It is a schematic diagram of the structure of the flexible hose in the present invention;

[0045] Figure 6 It is a schematic diagram of the structure of the ore and sediment separation cabin in the present invention;

[0046] Figure 7 This is a cross-sectional view of the ore and sediment separation cabin of the present invention. Figure 1 ;

[0047] Figure 8 It is a side cross-sectional view of the ore and sediment separation cabin of the present invention. Figure 2 ;

[0048] Fig. 9 It is a schematic diagram of the connection between the ore crushing cabin and the ore storage cabin in the present invention;

[0049] Fig.10 It is a structural schematic diagram of the control center in the present invention;

[0050] Fig.11 It is a schematic diagram of the structure of the mining robot in the present invention;

[0051] In the figure: 1 is a bottom-mounted relay station, 11 is an ore and sediment separation cabin, 111 is a separation cabin bulkhead, 112 is a truss slide rail, 113 is a mobile mine inlet, 114 is a three-stage electric mesh screen, 115 is a transport crawler, and 116 is a sediment pump outlet;

[0052] 12 is an ore crushing cabin, 121 is a crushing cabin wall, 122 is an ore crushing inlet, 123 is an ore crushing shaft, 124 is an ore crushing gear roller, 125 is a movable bottom drain plate, 126 is a drain plate chute, and 127 is an ore crushing outlet;

[0053] 13 is an ore storage cabin, 131 is an ore storage cabin bulkhead, 132 is an ore raising pipe, and 133 is an ore raising pump;

[0054] 14 is a robot and hose storage control cabin, 140 is a pipeline retracting and unretracting machine, 141 is an upper limit plate, 142 is a lower limit plate, 143 is an electric roller, 144 is a cabin interface, and 145 is a robot interface;

[0055] 15 is a control center, 151 is a signal processing module, 152 is a computer, and 153 is a controller;

[0056] 16 is a sediment flocculation tank;

[0057] 2 is a mining robot, 21 is a ore collecting head, 211 is a shell of the ore collecting head, 212 is an ore conveying port of the ore collecting head, and 213 is an ore inlet of the ore collecting head;

[0058] 22 is a walking track, 23 is a walking connecting rod;

[0059] 3 is a sediment spray pump robot, 4 is a surface support vessel, 5 is a multi-stage pump, 6 is a rigid riser,

[0060] 7 is a flexible hose, 71 is a hose anti-corrosion and wear-resistant outer wall, 72 is a hose anti-corrosion and wear-resistant inner wall, 73 is an embedded cable, 74 is an embedded optical fiber, 75 is a low-density high-strength buoyancy filling layer, and 76 is a high-strength skeleton filling layer. DETAILED DESCRIPTION

[0061] The specific technical scheme of the present invention is further described in detail below with reference to specific examples.

[0062] As shown in the figure, the present invention provides a mining system with a bottom-mounted relay station, including a bottom-mounted relay station 1, a mining robot 2, a sediment spray pump robot 3, a surface support vessel 4, a multi-stage pump 5, a rigid riser 6 and a flexible hose 7;

[0063] The bottom-mounted relay station 1 is fixedly sunk on the seabed of the seabed mining area, and the mining robot 2 and the sediment spray pump robot 3 are connected to the bottom-mounted relay station 1 through a flexible hose 7;

[0064] The mining robot 2 transports the ore and part of the sediment mixture in the seabed mining area to the bottom-mounted relay station 1 through the flexible hose 7 by means of a suction flow;

[0065] The sediment pump robot 3 pumps the sediment separated and processed by the bottom-mounted relay station 1 back to the seabed through the flexible hose 7;

[0066] The bottom-mounted relay station 1 is connected to the surface support vessel 4 through a multi-stage pump 5 and a rigid riser 6. The ore particles processed by the bottom-mounted relay station 1 are pumped to the surface support vessel 4 through the multi-stage pump 5 and the rigid riser 6 to complete the collection of ore in the seabed mining area.

[0067] Furthermore, the bottom-mounted relay station 1 includes an ore and sediment separation cabin 11, an ore crushing cabin 12, an ore storage cabin 13, a robot and hose storage control cabin 14, a control center 15 and a sediment flocculation cabin 16;

[0068] The ore and sediment separation chamber 11 is used to separate the ore and sediment mixture collected by the mining robot 2, and at the same time, the ore is transported to the ore crushing chamber 12 for further crushing, and the sediment is pumped to the sediment flocculation chamber 16 for mixing and precipitation with the biological flocculant;

[0069] The ore crushing cabin 12 is mainly used to further crush the ore transported from the ore and sediment separation cabin 11 and store it in the ore storage cabin 13;

[0070] The ore storage chamber 13 is used to store the ore crushed by the ore crushing chamber 12, and pumped into the rigid riser 6 through the pipe pump system, and further pumped to the surface support vessel 4 through the multi-stage pump 5 to complete the ore collection;

[0071] The robot and hose storage and control cabin 14 connects the mining robot 2, the sediment spray pump robot 3 and the flexible hose 7 and arranges them in the cabin when the mining system is arranged. When the bottom-mounted relay station 1 is successfully arranged on the seabed of the mining area to start mining, the mining robot 2 and the sediment spray pump robot 3 are taken out of the robot and hose storage and control cabin 14, and cooperate with the pipeline retracting and releasing machine 140 to orderly retract and release the pipeline to avoid pipeline entanglement;

[0072] The pipeline retracting and unretracting machine 140 is mainly composed of an upper limit plate 141, a lower limit plate 142, an electric roller 143, a cabin interface 144 and a robot interface 145;

[0073] The upper limit plate 141, the lower limit plate 142 and the electric roller 143 together constitute the main body of the arrangement structure of the flexible hose 7. The flexible hose 7 is wound around the electric roller 143. The electric roller 143 can rotate in a clockwise or counterclockwise direction to tighten or loosen the flexible hose 7, thereby achieving length control of the flexible hose 7.

[0074] The robot interface 145 of the flexible pipe 7 can be connected to the mining robot 2 or the sediment spray pump robot 3 to connect the mining robot 2, the sediment spray pump robot 3 and the bottom-mounted relay station 1;

[0075] When the robot interface 145 of the flexible pipe 7 is connected to the mining robot 2, the cabin interface 144 of the flexible pipe 7 is connected to the ore and sediment separation cabin 11 to ensure that the ore and sediment mixture is smoothly transported to the ore and sediment separation cabin 11 for separation;

[0076] When the robot interface 145 of the flexible pipe 7 is connected to the sediment spray pump robot 3, the cabin interface 144 of the flexible pipe 7 is connected to the sediment flocculation cabin 16 to discharge the sediment after being completely mixed and reacted with the biological flocculant back to the seabed;

[0077] The flexible pipeline 7 is mainly composed of a hose anti-corrosion and wear-resistant outer wall 71, a hose anti-corrosion and wear-resistant inner wall 72, an embedded cable 73, an embedded optical fiber 74, a low-density high-strength buoyancy filling layer 75, and a high-strength skeleton filling layer 76. The hose anti-corrosion and wear-resistant outer wall 71 is made of anti-corrosion and wear-resistant materials, which is mainly used to ensure that the pipeline sandwich structure is not corroded and eroded by sea currents; the hose anti-corrosion and wear-resistant inner wall 72 is made of anti-corrosion and wear-resistant materials to reduce the wear caused by collision and erosion of ore in the pipe; the embedded cable 73 is used to transmit current, and the embedded optical fiber 74 is used to transmit signals; the low-density high-strength buoyancy filling layer 75 is made of low The high-density and high-strength filling material ensures that the density of the flexible hose is lower than that of seawater, and it is always in a suspended state, so as to avoid disturbing the seabed sediments by moving on the seabed and forming a plume flow to cause additional pollution. On the other hand, the high-strength material ensures that the flexible hose has good strength and avoids fracture and damage. The high-strength skeleton filling layer 76 is composed of high-strength and high-toughness materials, which are filled in the low-density and high-strength buoyancy filling layer 75. On the one hand, it increases the tensile strength of the flexible hose 7, and on the other hand, it ensures that the flexible hose 7 remains unchanged in its original shape when the pipeline retracting and unretracting machine 140 retracts and unwinds the pipeline, so as to ensure the smoothness of the flow in the pipeline.

[0078] The control center 15 is used to perform information interaction control with the surface support vessel 4 and the underwater working components to ensure stable and effective operation of the system;

[0079] The sediment flocculation chamber 16 continuously sprays a quantitative amount of bioflocculant and stirs it fully during the mining process to ensure that the bioflocculant reacts with the sediment to form a flocculation state, thereby avoiding the formation of plume flow after the sediment is sprayed out by the sediment spray pump robot 3, which causes ecological pollution.

[0080] Furthermore, the ore and sediment separation cabin 11 is mainly composed of a separation cabin wall 111, a truss slide rail 112, a movable ore inlet 113, a three-stage electric screen 114, a transport crawler 115 and a sediment pump outlet 116;

[0081] The separation cabin bulkhead 111 is mainly used to form the internal separation space of the ore and sediment separation cabin 11, so as to prevent the plume formed by the sediment being lifted up during the separation process from escaping into the environment and causing unnecessary pollution to the seabed ecology. The truss rail 112 is longitudinally arranged on the separation cabin bulkhead 111 to provide support and a moving track for the mobile mine entrance 113. The upper end of the mobile mine entrance 113 is connected to the mining robot 2 through a flexible hose 7 wound on the pipe retractor 140, and can move back and forth at a constant speed on the truss rail 112, so that the ore and sediment mixture collected by the mining robot 2 can periodically slide onto the three-stage electric mesh screen 114.

[0082] The three-stage electric screen 114 is divided into mesh screens with mesh sizes from coarse to fine and is arranged alternately and tilted on the separation cabin wall 111. The sediment and ore particles are screened by vibration, so that the sediment is diffused in the cabin space of the ore and sediment separation cabin 11, and the ore particles finally fall onto the transport crawler 115. A leakproof partition is arranged on the transport crawler 115 to prevent the ore from scattering during transportation. One end is arranged at the bottom of the ore and sediment separation cabin 11, and the other end is tilted upward to transport the ore to the top of the ore and sediment separation cabin 11 and transport it to the ore crushing cabin 12 for further crushing;

[0083] The sediment pump outlet 116 is opened on the side of the separation cabin bulkhead 111, with a total of three openings, which are alternately arranged with the three sections of the three-stage electric screen 114, and are connected to the sediment flocculation tank 16 through a pipe pump system, so that the suspended sediment is pumped into the sediment flocculation tank 16 for further flocculation.

[0084] Furthermore, the ore crushing cabin 12 is mainly composed of a crushing cabin wall 121, a crushing inlet 122, a crushing shaft 123, a crushing gear roller 124, a movable bottom drain plate 125, a drain plate chute 126 and a crushing outlet 127;

[0085] The crushing chamber wall 121 is used to protect the internal structure of the ore crushing chamber 12 from being washed by the sea current on the one hand, and to prevent the ore particles from splashing during the crushing process on the other hand, which is beneficial to the ore collection;

[0086] The ore crushing inlet 122 is connected to the top of the transport crawler 115 to facilitate the ore separated from the ore and sediment separation cabin 11 to enter the ore crushing cabin 12;

[0087] The ore crushing shaft 123 is longitudinally arranged in the ore crushing chamber 12, and a ore crushing gear roller 124 is fixedly connected to the outside. The ore crushing shaft 123 rotates to drive the ore crushing gear roller 124 to crush the ore.

[0088] The movable bottom leakage plate 125 is arranged longitudinally through the ore crushing chamber 12 and the bottom of the ore crushing shaft 123 and the ore crushing tooth roller 124. The left and right movable bottom leakage plates 125 are distributed at a certain angle to form a crushed ore outlet 127. At the same time, the other end of the movable bottom leakage plate 125 is connected to the leakage plate chute 126 and can move up and down periodically along the leakage plate chute 126. On the one hand, it ensures that the crushed ore particles fall smoothly, and a large amount of blockage is inevitable. On the other hand, when the movable bottom leakage plate 125 moves to the upper top, the ore crushing tooth roller 124 can drive the incompletely crushed ore to be further crushed to the expected size. At the same time, the movable bottom leakage plate 125 can adjust the connection angle with the leakage plate chute 126 to control the size of the crushed ore outlet 127, so as to adjust the target crushing particle size and prevent blockage at the same time.

[0089] Furthermore, the ore storage cabin 13 is mainly composed of a ore storage cabin wall 131, an ore raising pipe 132 and an ore raising pump 133, and is located at the lower part of the ore crushing cabin 12. The ore crushed by the ore crushing cabin 12 slides into the ore storage cabin 13 through the ore crushing outlet.

[0090] The ore storage compartment bulkhead 131 forms a storage space, allowing the crushed ore to be transferred in the ore storage compartment 13; the ore lifting pipe 132 is flange-connected to the connecting opening on the side of the ore storage compartment bulkhead 131, and is connected to the ore lifting pump 133. The ore particles inside the ore storage compartment 13 are pumped into the rigid riser 6 through the suction action of the ore lifting pump 133, and are finally pumped to the surface support vessel 4 via the multi-stage pump 5 to complete the collection of the ore particles.

[0091] Furthermore, the mining robot 2 is mainly composed of a mining head 21, a walking crawler 22 and a walking connecting rod 23, so as to simplify the structure and reduce the weight as much as possible, reduce the disturbance of the seabed sediments during the walking process, and improve the control performance of the mining robot 2;

[0092] The ore collecting head 21 is mainly composed of an ore collecting head shell 211, an ore collecting head ore delivery port 212 and an ore collecting head ore inlet 213. The ore collecting head shell 211 is used to form an internal space of the ore collecting head, and a suction flow channel is formed, so that the seabed ore is sucked into the collection robot 2 through the ore collecting head ore inlet 213;

[0093] The ore collection head ore delivery port 212 is connected to the mobile ore inlet 113 of the ore and sediment separation cabin 11 through a pipe pump system via a flexible hose 7 wound on a pipe retractor 140 to further separate the collected ore and sediment mixture.

[0094] Furthermore, the control center 15 is mainly composed of a signal processing module 151, a computer 152 and a controller 153;

[0095] The signal processing module 151 is mainly used to pre-process the signals from the surface support vessel 4 and each seabed working module and interact with them;

[0096] The computer 152 converts the received signal into a control signal and transmits the control signal to the controller 153. The controller 156 transmits the control command to each operation module to ensure that the mining operation proceeds in an orderly manner.

Claims

1. A mining system with a bottom-mounted relay station, comprising a seabed of a seabed mining area, characterized in that: It also includes a bottom-mounted relay station (1), a plurality of mining robots (2), a sediment spray pump robot (3), a surface support vessel (4), a multi-stage pump (5), a rigid riser (6), and a flexible hose (7); The bottom-mounted relay station (1) is fixedly installed on the seabed of a seabed mining area, and a flexible hose (7) is installed between the bottom-mounted relay station (1) and a plurality of mining robots (2) and a sediment spray pump robot (3), and the plurality of mining robots (2) and sediment spray pump robots (3) are respectively connected to the bottom-mounted relay station (1) via the flexible hose (7); A rigid riser (6) is arranged on the bottom-mounted relay station (1), and a multi-stage pump (5) is connected to the rigid riser (6); A surface support vessel (4) is arranged at the top of the rigid riser (6), and the bottom-mounted relay station (1) is connected to the surface support vessel (4) via a multi-stage pump (5) and a rigid riser (6) arranged thereon; The bottom-mounted relay station (1) comprises an ore and sediment separation cabin (11), an ore crushing cabin (12), an ore storage cabin (13), a robot and hose storage and control cabin (14), a control center (15) and a sediment flocculation cabin (16) which are interconnected; The ore and sediment separation cabin (11), the robot and the hose storage and control cabin (14) are connected to the mining robot (2) via a flexible hose (7). The ore storage cabin (13) is connected to the rigid riser (6); A pipe pump system is installed in the ore and sediment separation cabin (11), the ore crushing cabin (12), the ore storage cabin (13), the robot and hose storage control cabin (14), the control center (15) and the sediment flocculation cabin (16); A pipe retracting and unretracting machine (140) is also arranged inside the robot and hose storage and control cabin (14); The control center (15) is connected to the surface support vessel (4) and the installed underwater working components via wireless communication; The ore and sediment separation cabin (11) comprises a cabin wall (111), a truss slide rail (112) is arranged inside the cabin wall (111), and the truss slide rail (112) is longitudinally arranged on the cabin wall (111). A mobile mine entrance (113) is movably arranged on the truss slide rail (112); the upper end of the mobile mine entrance (113) is connected to the mining robot (2) via a flexible hose (7) wound on a pipe retracting and unretracting machine (140), and can move back and forth at a constant speed on the truss slide rail (112); A three-stage electric screen (114) is arranged inside the ore and sediment separation cabin (11), at the lower end of the truss slide rail (112) and the movable ore inlet (113), and the three-stage electric screen (114) is divided into screens with mesh sizes from coarse to fine and arranged alternately and tilted on the cabin wall (111); A sediment pump outlet (116) is provided on the side of the separation cabin bulkhead (111), with a total of three openings, which are arranged alternately with the three sections of mesh screens on the three-stage electric mesh screen (114), and the sediment pump outlet (116) is connected to the sediment flocculation cabin (16) through a pipe pump system; A track groove is provided on the bulkhead (111) of the other side of the separation cabin, a transport track (115) is arranged in the track groove, and a leakproof partition is arranged on the transport track (115); The ore crushing cabin (12) comprises a crushing cabin wall (121), a crushing ore inlet (122) is provided on the crushing cabin wall (121), and the crushing ore inlet (122) is connected to the top of the transport crawler (115); Two ore crushing rotating shafts (123) are arranged inside the ore crushing chamber (12). The ore crushing rotating shafts (123) are longitudinally penetrated and arranged in the ore crushing chamber (12), and ore crushing gear rollers (124) are fixedly connected to the outside of the ore crushing rotating shafts (123). Two movable bottom leakage plates (125) are also arranged inside the ore crushing chamber (12). The movable bottom leakage plates (125) are arranged to penetrate the ore crushing chamber (12) longitudinally and are located at the bottom of the ore crushing shaft (123) and the ore crushing gear roller (124). The two movable bottom leakage plates (125) on the left and right are arranged at an angle to form a ore crushing outlet (127). Two leakage plate chutes (126) are symmetrically arranged on the inner wall of the crushing chamber bulkhead (121), one end of the movable bottom leakage plate (125) is respectively connected to the two leakage plate chutes (126) and periodically moves up and down along the leakage plate chutes (126); The ore storage cabin (13) is arranged at the lower part of the ore crushing cabin (12), and comprises an ore storage cabin wall (131) and an ore raising pipe (132) connected to one end of the ore crushing cabin (12), wherein the ore storage cabin wall (131) forms a storage space, and the ore raising pipe (132) is connected to an opening on the side of the ore storage cabin wall (131) through a flange, and a connected ore raising pump (133) is arranged at the ore raising pipe (132); The pipeline retracting and unretracting machine (140) comprises an upper limit plate (141) and a lower limit plate (142). An electric roller (143) is arranged between the upper limit plate (141) and the lower limit plate (142), and the flexible hose (7) is wound around the electric roller (143). The upper limit plate (141), the lower limit plate (142) and the electric roller (143) together constitute the main body of the arrangement structure of the flexible hose (7); A cabin interface (144) and a robot interface (145) are respectively provided on the flexible hose (7), and the flexible hose (7) is respectively connected to the mining robot (2), the sediment spray pump robot (3) and the bottom-mounted relay station (1) through the cabin interface (144) and the robot interface (145); The flexible hose (7) comprises a hose anti-corrosion and wear-resistant outer wall (71) arranged at the outermost side and a hose anti-corrosion and wear-resistant inner wall (72) arranged at the innermost side, and a low-density high-strength buoyancy filling layer (75) and a high-strength skeleton filling layer (76) are arranged between the hose anti-corrosion and wear-resistant outer wall (71) and the hose anti-corrosion and wear-resistant inner wall (72) arranged at the innermost side; An embedded cable (73) and an embedded optical fiber (74) are also arranged inside the flexible hose (7); The hose anti-corrosion and wear-resistant outer wall (71) and the hose anti-corrosion and wear-resistant inner wall (72) are both made of anti-corrosion and wear-resistant materials; The material of the low-density and high-strength buoyancy filling layer (75) is composed of low-density and high-strength filling material; The material of the high-strength skeleton filling layer (76) is composed of high-strength and high-toughness materials; The control center (15) comprises a signal processing module (151), a computer (152) and a controller (153) which are interconnected by wires; The signal processing module (151), the computer (152) and the controller (153) are respectively connected to the mining robot (2), the sediment spray pump robot (3), the pipeline retracting and releasing machine (140), the ore and sediment separation cabin (11) and the ore crushing cabin (12); The mining robot (2) comprises a ore collecting head (21), the ore collecting head (21) comprises a ore collecting head shell (211), and a ore collecting head ore delivery port (212) and a ore collecting head ore inlet port (213) are respectively provided at two ends of the ore collecting head shell (211); Walking tracks (22) are respectively arranged at both ends of the ore collecting head (21), and walking connecting rods (23) are arranged between the ore collecting head (21) and the walking tracks (22) on both sides; The ore collection head ore delivery port (212) is connected to the movable ore inlet (113) of the ore and sediment separation cabin (11) through a pipe pump system installed via a flexible hose (7) wound on a pipe retractor (140).

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