Crushing and feeding equipment and deep-sea mining and transport system

Abstract

Crushing and feeding equipment and deep-sea mining and transport system [Solution] The crushing and feeding device of the present invention includes a main body and a hydraulic motor, the main body having at least one roller inside, the roller fitted onto a corresponding roller shaft, the roller shaft rotatably connected to the main body, at least three identical disc blades spaced equally apart in the axial direction of the roller, each disc blade having at least one cutting edge, plugs provided on both the front and rear vertical surfaces of the main body, the plugs fitting into the gap from the roller to the vertical surface of the main body, and the power output shaft of the hydraulic motor connected to the roller shaft. The deep-sea mining and conveying system of the present invention includes a relay station, a mixed-flow pump, a lifting pipe, and a mother ship, the relay station including a supply barrel, a supply pipe, and the crushing and feeding device connected in order from top to bottom, the lower opening of the supply pipe connected to the lifting pipe.

Description

Technical Field

[0001] The present invention relates to deep - sea mining equipment, and more specifically, to a crushing and feeding device and a deep - sea mining transportation system.

Background Art

[0002] The deep - sea mining transportation system uses a lifting pipe and an axial - flow pump to transport pulp from a sub - sea relay station to a mother ship on the sea surface. To transport the pulp from the seabed to the mother ship, it is necessary to lift it to a high place. Due to the limitations caused by the diameter of the lifting pipe and the flow velocity of the pulp, the transportation system has strict requirements regarding the size of ore particles in the pulp and the concentration of the pulp. The larger the size of the ore particles and the higher the concentration of the pulp, the more likely the lifting pipe and the axial - flow pump are to be clogged during transportation, which affects the working efficiency of the deep - sea mining transportation system.

[0003] CN118179697A provides a deep - sea mining system that uses a variable - pitch twin - screw crusher to crush ore, then transports it to a lifting pipe, and then sends it to a supply barrel. Although it solves the problem that the lifting pipe and the axial - flow pump are likely to be clogged because the size of the ore particles is too large, the following drawbacks still exist.

[0004] First, the variable - pitch twin - screw crusher uses a spiral variable pitch to perform crushing, cutting, and breaking. Therefore, the size of large ore must not exceed the maximum pitch of the crusher and the space defined by the crusher shell. Otherwise, the ore cannot enter the crusher and will not be crushed. Further, the variable - pitch twin - screw crusher crushes and cuts ore by changing the pitch. The change in pitch of the variable - pitch twin - screw crusher from the ore inlet end to the ore outlet end must not be too large. Otherwise, the space at the ore outlet end is too small, and the ore will block the outlet of the crusher. Therefore, the variable - pitch twin - screw crusher has structural limitations and a small crushing ratio.

[0005] Secondly, when crushing ore using a crusher in an open seabed environment, the seabed sediment carried during ore extraction and the large amount of fine ore particles generated during ore crushing spread to the surrounding area along the seabed currents, polluting the seawater and affecting the survival of nearby seabed organisms.

[0006] Thirdly, it is not possible to effectively control the solid-liquid ratio of the pulp in the ore lifting pipe. The ore particles produced by crushing the ore have an irregular shape, and the particles accumulate, making it difficult for them to slide against each other. If the ore lifting pipe is inserted directly into the ore pile, the ore will rise in an arch shape at the opening of the lifting pipe, making it impossible to lift the ore. If a U-shaped inlet is provided at the lower end of the lifting pipe and the gravity of the ore itself and the negative pressure of the inlet are used, if the size of the U-shaped inlet is small, the ore particles tend to rise in an arch shape around the inlet, making it difficult for them to fall into the lifting pipe. If the U-shaped inlet is large, the ore particles will collapse due to the action of the ore itself and be supplied, and a large amount of ore particles will slide through the U-shaped inlet into the lifting pipe, directly leading to clogging of the lifting pipe. Because the supply from the U-shaped inlet at the lower end of the lifting pipe is not controlled, it is not possible to control the solid-liquid ratio of the pulp supplied by the lifting pipe.

[0007] Based on the above, existing deep-sea mining and transport systems have three main problems. First, the crushing ratio of the crusher is small. Second, the surrounding seawater is contaminated by the crushing of seabed ore. Third, the solid-liquid ratio of the supplied pulp in the lifting pipe is not maintained. [Overview of the project] [Problems that the invention aims to solve]

[0008] The first objective of the present invention is to provide a crushing and feeding device with a large crushing ratio, and the second objective of the present invention is to provide an environmentally friendly deep-sea mining and conveying system that can control the solid-liquid ratio of the pulp supplied to the lifting pipe. [Means for solving the problem]

[0009] To achieve the above objectives, the present invention is realized by the following technical solutions.

[0010] The crushing and feeding device comprises a main body and a hydraulic motor, wherein the main body is a rectangular tube with an upper and lower section in communication, the upper end being an inlet and the lower end being an outlet, the main body contains at least one roller inside, the roller is fitted onto a corresponding roller shaft, both ends of the roller shaft are supported by bearings in bearing holes at both the left and right ends of the main body, at least three equally spaced disc blades of the same specifications are provided in the axial direction of the roller, each disc blade is provided with at least one cutting edge, plugs are provided on both the front and rear vertical surfaces of the main body, the plugs fit into the gap from the roller to the vertical surface of the main body, and the hydraulic motor is provided outside the main body, its power output shaft is connected to the roller shaft.

[0011] A deep-sea mining and transport system comprising a relay station, a mixed-flow pump, a lifting pipe, and a mother ship, wherein the relay station is located on the seabed and is connected to the mother ship by a lifting pipe and a mixed-flow pump, wherein the relay station comprises a hydraulic station, a supply barrel, a supply pipe, and a crushing and supply device, wherein the supply barrel, the crushing and supply device, and the supply pipe are connected sequentially from top to bottom, the lower opening of the supply pipe is connected to the lifting pipe, and the hydraulic fluid for the hydraulic motor is supplied from the hydraulic station.

[0012] The object of the present invention may be further realized by the following technical solutions.

[0013] The main body has a front roller and a rear roller inside, the front roller and the rear roller are the same shape and size, the front roller and the rear roller are reversed left and right in the axial direction and fitted and fixed to the corresponding front roller shaft and rear roller shaft, respectively, the head portion at the right end of the front roller shaft passes through the right side of the main body and is fixedly connected to the front gear, the head portion at the right end of the rear roller shaft passes through the right side of the main body and is fixedly connected to the rear gear, an intermediate gear for transmitting power is provided between the front gear and the rear gear, the intermediate shaft of the intermediate gear is fixedly connected to the main body, and the power output shaft of the hydraulic motor is connected to the front roller shaft. At least three identical front disc blades are provided at equal intervals in the axial direction of the front roller, and at least three identical rear disc blades are provided at equal intervals in the axial direction of the rear roller, with a front partition groove between adjacent front disc blades and a rear partition groove between adjacent rear disc blades, the front partition groove and the rear partition groove fitting into the rear disc blade and the front disc blade, respectively, each front disc blade is provided with at least one front cutting edge, and each rear disc blade is provided with at least one rear cutting edge, and the cutting edges of the front cutting edge and the rear cutting edge are provided with a front housing groove and a rear housing groove in the radial direction of the disc blade, respectively.

[0014] The gap between the top of the front disc blade and the bottom of the rear partition groove, and the gap between the top of the rear disc blade and the bottom of the front partition groove, are both denoted as δ.

[0015] The depth H of the front partition groove and the rear partition groove is greater than the height h of the front blade portion and the rear blade portion.

[0016] The front gear and rear gear have the same number of teeth.

[0017] The cutting edges of the front and rear rollers are distributed in a multi-head spiral pattern along the axial direction of the front and rear rollers.

[0018] The materials of the front disk blade, the front blade part, and the rear blade part of the rear disk blade are high-strength steel or synthetic diamond.

[0019] End caps are provided at both left and right ends of the front roller and the rear roller.

[0020] The main body includes two parts, an upper part and a lower part, which are integrally connected by a flange. The gap ε between the end caps at both left and right ends of the front roller and the rear roller and the upper part of the main body is smaller than the gap Ε between the end caps at both left and right ends of the front roller and the rear roller and the lower part of the main body.

[0021] On the outer end face of the end cap, at least one radial protrusion is provided from the inner diameter to the outer diameter, and the height of the protrusion is smaller than the gap ε between the end cap and the upper part of the main body.

[0022] The main body includes two parts, an upper part and a lower part, which are integrally connected by a flange. When the number of rollers in the crushing supply device is odd, the front plug and the rear plug are provided at the lower part of the main body, and the upper plane of the front plug and the rear plug is flush with the axis of the roller shaft.

[0023] The hydraulic motor is a hydraulic variable displacement motor.

[0024] The supply barrel is a conical tubular shape with a large upper part and a small lower part. Its lower opening is provided with a flange and is connected to the upper end of the crushing supply device.

[0025] The supply pipe is a conical tubular shape with a large upper part and a small lower part, a square upper part and a circular lower part. Its upper opening is provided with a flange and is connected to the lower end of the crushing supply device. Its lower opening is provided with a flange and is connected to the ore lifting pipe.

Advantages of the Invention

[0026] This invention provides a deep-sea mining and transport system that utilizes a crushing and feeding device to crush large ore in a supply barrel into small ore particles, which are then dropped into a supply pipe along with the turbid seawater generated during crushing. The ore is then instantly introduced into a lifting pipe through the supply pipe and transported to the mother ship via a mixed-flow pump. The beneficial effects are as follows:

[0027] (1) The crushing and feeding device is clean and environmentally friendly during operation. The inlet of the crushing and feeding device is connected to the supply barrel, the outlet of the crushing and feeding device is connected to the upper opening of the supply pipe, and the lower opening of the supply pipe is connected to the ore lifting pipe, meaning that the crushing and feeding device operates in a semi-enclosed environment. During the crushing process, the fine ore particles generated by the crushing and feeding device, along with the seabed sediment carried to the collected ore, turbidify the seawater in the crushing and feeding device. The turbid seawater is limited in total volume and is affected by the following factors. Firstly, turbid seawater has a higher specific gravity than clean seawater and tends to sink spontaneously in the crushing and feeding device. Secondly, the upper part of the turbid seawater is covered with a large amount of ore to be crushed, providing a certain covering and barrier effect. Thirdly, the negative pressure in the supply pipe of the ore lifting riser draws the turbid seawater into the ore lifting pipe. In other words, the seawater at the top of the crushing and feeding device and the turbid seawater inside the crushing and feeding device pass through the gap between the front and rear rollers, and the gap between the front and rear rollers and the main body, and are instantly sucked into the ore lifting pipe along with small ore particles, and transported to the mother ship by a mixed-flow pump. This suppresses the diffusion of turbid seawater to the seabed and enables clean production.

[0028] (2) It is easy to adjust the solid-liquid ratio of the pulp. By adjusting the rotational speed of the hydraulic motor, the crushing speed of the ore by the crushing supply device is changed, that is, the amount of ore introduced into the supply pipe by the crushing supply device per unit time is changed. The amount of ore particles falling from the crushing supply device into the supply pipe decreases, the amount of seawater introduced into the lifting pipe increases, the solid-liquid ratio of the pulp decreases, and conversely, the solid-liquid ratio of the pulp increases, thereby adjusting the solid-liquid ratio of the pulp. Furthermore, according to the test results, when the solid-liquid ratio of the pulp in the lifting pipe is less than 20%, since the specific gravity of the ore particles is greater than that of seawater, the ore particles and seawater simultaneously descend into the lifting pipe due to the negative pressure of the supply pipe, and the ore particles preferentially and instantaneously enter the lifting pipe together with the seawater. Therefore, even when the ore reaches the connection part of the supply pipe and the lifting pipe, no deposition or arching occurs, ensuring smooth supply to the lifting pipe.

[0029] (3) The crushing ratio of the crushing supply device is large. Since the blade part of the roller of the crushing supply device has a turning function, when the ore enters the upper end of the crushing supply device and contacts the roller, it is turned from bottom to top by the disk blade of the roller and becomes small ore particles that meet the size requirements. Therefore, the crushing ratio of this device becomes large.

Brief Description of the Drawings

[0030] [Figure 1] It is a structural schematic diagram of the deep-sea mining transportation system provided in the embodiment of the present invention. [Figure 2] It is a diagram showing the assembly of the crushing supply device, supply barrel, and supply pipe in Example 1. [Figure 3] It is a structural schematic diagram of the crushing supply device in Example 1. [Figure 4] It is a view taken along the A-A arrow in FIG. 3. [Figure 5] It is an exploded structural schematic diagram of the lower part of the main body of the crushing supply device in Example 1. [Figure 6] It is a cross-sectional view of the front roller and rear roller of the crushing supply device in Example 1. [Figure 7] It is a structural schematic diagram of the single-roller type crushing supply device in Example 2. [Figure 8] Figure 7 shows a schematic diagram of the structure when the upper half of the main body is removed. [Figure 9] This is a top view of Figure 8. [Modes for carrying out the invention]

[0031] To further clarify the object and technical solution of the present invention, the present invention will be described below with reference to the drawings and embodiments.

[0032] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as those generally understood by those skilled in the art.

[0033] In this invention, the terms "up, down, left, right, front, and back" mean that when the reader is facing Figures 1, 2, 3, and 7, the top of the reader is up, the bottom of the reader is down, the left side of the reader is left, the right side of the reader is right, the front of the reader's paper is front, and the inside of the reader's paper is back. This does not particularly limit the invention.

[0034] (Example 1) As shown in Figures 1 to 6, the deep-sea mining and transport system includes a mother ship 1, a lifting pipe 2, a mixed-flow pump 3, and a relay station 10. The relay station 10 is positioned on the seabed 13 by a holder 12, and the ore 7 deposited on the seabed 13 is transported to the relay station 10 by the mining equipment. The relay station 10 is connected to the mother ship 1 via the lifting pipe 2, and the mixed-flow pump 3 is directed towards the lifting pipe 2.

[0035] The relay station 10 is equipped with a supply barrel 4, a crushing and supply device 5, a supply pipe 6, and a hydraulic station 11. The supply barrel 4 is a conical tube that is larger at the top and smaller at the bottom. Its upper opening is open, and its lower opening has a flange. It is connected to the upper end of the main body 507 and used to receive the ore 7. The supply pipe 6 is a conical tube that is larger at the top and smaller at the bottom, with a square top and a circular bottom. Its upper opening has a flange and is connected to the lower end of the main body 507. Its lower opening also has a flange and is connected to the ore lifting pipe 2.

[0036] The crushing and feeding device 5 has a double roller structure and includes a main body 507, a front roller 523, a front roller shaft 525, a rear roller 513, a rear roller shaft 515, and a hydraulic variable displacement motor 502. The main body 507 is a rectangular cylindrical body and is divided into two parts, namely the upper body 5071 and the lower body 5072. The upper body 5071 and the lower body 5072 are integrally connected by a flange, and the upper and lower parts are in communication, with the upper end being the inlet and the lower end being the outlet. Bearing holes for the front roller shaft 525 and the rear roller shaft 515 are provided on the left and right end faces of the main body 507, respectively. The vertically symmetrical planes of the bearing holes are the planes that divide the upper and lower parts of the main body 507, and the bearing holes are described as the first front bearing hole 521, the second front bearing hole 527, the first rear bearing hole 511, and the second rear bearing hole 517, respectively.

[0037] The front roller 523 and the rear roller 513 are the same shape and size. Seven identical disc blades are provided at equal intervals in the axial direction of each front roller 523 and rear roller 513. The front roller 523 corresponds to the front disc blade 522, and the rear roller 513 corresponds to the rear disc blade 512. The front partition groove 526, formed at intervals between the front disc blades 522, has a width corresponding to the width of the rear disc blade 512, and the depth of the front partition groove 526 is set to H. The rear partition groove 516, formed at intervals between the rear disc blades 512, has a width corresponding to the width of the front disc blade 522, and the depth of the rear partition groove 516 is also set to H. Each of the front disc blade 522 and the rear disc blade 512 is provided with 12 cutting edges. Each cutting edge has a storing groove at its radially forward end. The front storing groove 529 corresponds to the front storing groove 529 of the front disc blade 522, and the rear storing groove 519 corresponds to the rear storing groove 519 of the rear disc blade 512. The height of the cutting edge is h, and the material of the cutting edge is high-strength steel or synthetic diamond.

[0038] Furthermore, in order to enhance the crushing effect of the crushing and feeding device 5, the front blades 528 provided on the front disc blades 522 are distributed in a multi-head spiral in the axial direction of the front roller 523, and since each front disc blade 522 is provided with 12 front blades 528, the number of spiral heads on the front roller 523 is 12. The rear blades 518 of the rear roller 513 are distributed in a spiral, similar to the front roller 523. The purpose of the spiral distribution of the blades is to ensure that the blades of each disc blade of the front roller 523 and the rear roller 513 have a certain overlapping angle when crushing the ore, thereby stabilizing the cutting operation of the front roller 523 and the rear roller 513 and reducing the impact force caused by crushing.

[0039] Front end caps 530 are provided on both the left and right ends of the front roller 523, and rear end caps 531 are provided on both the left and right ends of the rear roller 513, and the cavities on both the left and right ends of the front roller 523 and the rear roller 513 are sealed by the front end caps 530 and the rear end caps 531. The front roller 523 and the rear roller 513 are the same shape and size, and are fitted onto the corresponding front roller shaft 525 and rear roller shaft 515 by being reversed axially, and are also connected together by axial fixing nuts and keys. Both ends of the front roller shaft 525 are supported by bearings in the second front bearing holes 527 and the first front bearing holes 521 on the left and right sides of the main body 507, respectively, and the right end head of the front roller shaft 525 is fixed and connected to the front gear 501 by passing through the right side of the main body 507 with a bearing. The rear roller shaft 515 is supported at both ends by bearings in the second rear bearing hole 517 and the first rear bearing hole 511 located on the left and right sides of the main body 507, respectively. The right end head of the rear roller shaft 515 is fixedly connected to the rear gear 506 by passing through the right side of the main body 507 via a bearing. An intermediate gear 503 is provided between the front gear 501 and the rear gear 506, and the intermediate gear 503 meshes with both the front gear 501 and the rear gear 506. An intermediate bearing 505 is provided in the central inner hole of the intermediate gear 503, and an intermediate shaft 504 is provided in the hole of the intermediate bearing 505, and the intermediate shaft 504 is fixedly connected to the main body 507. The hydraulic variable displacement motor 502 is provided outside the main body 507, and its power output shaft is connected to the front roller shaft 525. The hydraulic fluid for the hydraulic variable displacement motor 502 is supplied from a hydraulic station 11 provided in the relay station 10.

[0040] The front and rear blade sections 528 and 518 of the crushing and feeding device 5, which are provided in conjunction with the front roller 523 and rear roller 513, have a turning function. As long as the ore enters the upper end of the crushing and feeding device 5 and comes into contact with the rollers, it is turned from bottom to top by the front and rear blade sections 528 and 518 of the rollers, resulting in small ore particles. Therefore, the crushing and feeding device 5 has a high crushing ratio. Furthermore, the front roller 523 and rear roller 513 rotate relative to each other during operation. That is, when the crushing and feeding device 5 is observed from the right side, the front roller 523 rotates clockwise and the rear roller 513 rotates counterclockwise, and the cutting edges of their blades are also positioned relative to each other. When the crushing and feeding device 5 is in operation, in addition to turning large and medium-sized ore using the front and rear blade sections 528 and 518 as described above, there are three crushing methods for medium-sized ore.

[0041] Firstly, the front blade portion 528 and the rear blade portion 518 are used to crush the ore between them.

[0042] Secondly, the ore is sheared and crushed using the left and right edges of the front cutting edge 528 and the rear partition groove 516, and the left and right edges of the rear cutting edge 518 and the front partition groove 526.

[0043] Thirdly, the ore is crushed using the groove bottoms of the front cutting edge 528 and the rear partition groove 516, and the groove bottoms of the rear cutting edge 518 and the front partition groove 526.

[0044] The small ore particles formed by the above-mentioned turning, shearing, and crushing fall into the supply pipe 6 as the front roller 523, the front storage groove 529 and rear storage groove 519 of the rear roller 513, and the gap δ between the front roller 523 and the rear roller 513 rotate toward the outlet of the main body 507. The amount of crushing per unit time of the crushing and supplying device 5 is determined by the rotational speed of the front roller 523 and the rear roller 513, that is, by the rotational speed of the hydraulic variable displacement motor 502. The crushing and supplying device 5 employs a hydraulic variable displacement motor 502 as its power output, which has the advantage of high control accuracy. By precisely controlling the torque and rotational speed of the hydraulic variable displacement motor 502, the system adjusts the ore crushing speed of the crushing and supplying device 5 according to the actual requirements, satisfying the solid-liquid ratio required for deep-sea mining and transport, and effectively avoiding problems of ore accumulation and clogging in the pipeline.

[0045] Inside the main body 507, a front plug 524 is provided on the front of the front roller 523, and a rear plug 514 is provided on the rear of the rear roller 513. The front plug 524 and the rear plug 514 are the same size, and their groove type is a rectangular tooth groove. They fit into the gap between the radial direction of the front roller 523 and the front of the main body 507, and between the radial direction of the rear roller 513 and the rear of the main body 507, respectively, and are fixed to the main body 507. The purpose of this is to prevent large pieces of ore from falling into the supply pipe 6 without being crushed, and to allow seawater at the inlet of the crushing and supplying device 5 to flow to the outlet through the gap.

[0046] Furthermore, the end caps at both ends of the front roller 523 and rear roller 513 have a gap ε between them and the upper part 5071 of the main body, and a gap E between them and the lower part 5072 of the main body, and ε < E. The reason for reducing the gap ε between the front end cap 530 and rear end cap 531 and the upper part 5071 of the main body is to reduce the amount of ore that falls into the gap and to prevent large pieces of ore from falling into the supply pipe 6 without being crushed. By increasing the gap E between the end caps at both ends of the front roller 523 and rear roller 513 and the lower part 5072 of the main body, the ore in the gap ε of the upper part 5071 of the main body follows the rotation of the rollers and falls into the gap E of the lower part 5072 of the main body, and then falls well into the supply pipe 6 from the gap E of the lower part 5072 each time. On the outside of the front end cap 530 and the rear end cap 531, eight radial projections 5301 are provided, extending from the inner diameter to the outer diameter, and the height of the projections 5301 is smaller than the gap ε between the end cap and the upper part of the main body. As the front roller 523 and the rear roller 513 rotate, the ore in the gap ε between the roller and the upper part of the main body 5071 is scraped by the radial projections 5301 into the gap E between the roller and the lower part of the main body 5072, and falls free, thereby achieving self-cleaning and reducing the reactive power loss of the hydraulic variable displacement motor 502.

[0047] When the crushing and feeding device 5 is in operation, the mining equipment sends the ore 7 from the seabed 13 to the supply barrel 4. Observing the gear ends of the crushing and feeding device 5 from right to left, the front roller 523 rotates clockwise and the rear roller 513 rotates counterclockwise, turning, shearing, and crushing the ore into small ore particles. The small ore particles enter the input port through the front storage groove 529 and the rear storage groove 519, and through the gap δ between the top of the front blade 528 and the bottom of the rear partition groove 516, and the gap δ between the top of the rear blade 518 and the bottom of the front partition groove 526. The crushed small ore particles and turbid seawater rotate with the front roller 523 and the rear roller 513 towards the outlet of the main body 507 and fall into the supply pipe 6, which instantly introduces the ore particles and turbid seawater into the lifting pipe 2. Additionally, seawater flows into the supply pipe 6 through the gaps between the front roller 523, rear roller 513 and the main body 507. Therefore, the maximum size of ore particles that can enter the lifting pipe 2 is limited by setting the sizes of the front and rear storage grooves 529 and 519, as well as the size of the gap δ. Furthermore, since the gaps between the front roller 523 and rear roller 513 and the front and rear of the main body 507 are blocked by the front plug 524 and rear plug 514, large ore particles cannot fall from the inlet of the crushing and supplying device 5 into the supply pipe 6 located below the outlet of the crushing and supplying device 5 without being crushed.

[0048] The main functions of the crushing and feeding device 5 are as follows:

[0049] Firstly, large ore is crushed into smaller ore pieces that meet the transport size requirements of the ore lifting pipe 2, that is, the maximum size of the ore particles is controlled to be 20 mm or less.

[0050] Secondly, the solid-liquid ratio of the supply material to the ore lifting pipe 2 is controlled. Because the crushing rate of the crushing supply device 5 is controllable, the amount of ore transported from the supply pipe 6 to the ore lifting pipe 2 per unit time can be controlled, thereby ensuring that the ore content in the pipeline of the ore lifting pipe 2 is less than 20%, and preventing clogging by ore in the ore lifting pipe 2 and the mixed-flow pump 3. Since the ore crushed by the crushing supply device 5 is introduced into the ore lifting pipe 2 instantaneously, there is no possibility of ore accumulating at the bottom of the supply pipe 6 or causing clogging.

[0051] Thirdly, contamination of the surrounding seawater by the operation of the crushing and feeding device 5 is avoided. Since the supply barrel 4, crushing and feeding device 5, supply pipe 6, and lifting pipe 2 are sealed together, the crushing and feeding device 5 operates in a semi-sealed environment. When the mixed-flow pump 3 is operating, the supply pipe 6 of the lifting pipe 2 becomes negatively pressurized, and the turbid seawater generated by the fine ore particles from the crushing and feeding device 5 and the seabed sediment carried by the ore is drawn directly into the lifting pipe 2, thus avoiding contamination of the surrounding seawater.

[0052] When the deep-sea mining and transporting system starts operations, it first activates the mixed-flow pump 3, and then activates the hydraulic variable displacement motor 502 of the crushing and feeding device 5.

[0053] When the deep-sea mining and transporting system finishes its operations, it first turns off the hydraulic variable displacement motor 502 of the crushing and feeding device 5, and then turns off the mixed-flow pump 3.

[0054] (Example 2) As shown in Figures 7 to 9, Embodiment 2 was substantially the same as Embodiment 1, except for the following points.

[0055] The crushing and feeding device has a single-roller structure with only one roller 623 inside.

[0056] The first body 607 of the crushing and feeding device is a rectangular cylindrical body divided into two parts, an upper and a lower, which are connected integrally by a flange, and the upper and lower parts are through each other. A pair of bearing holes are provided on the left and right end faces of the first body 607, and the bearing holes are symmetrical with respect to the dividing surface of the first body 607. The bearing hole on the left end face of the first body 607 is the second bearing hole 627, and the bearing hole on the right end face of the first body 607 is the first bearing hole 621.

[0057] Seven identical disc blades 622 are provided at equal intervals along the axial direction of the roller 623, each disc blade 622 has 12 cutting edges, and first front partition grooves 626 are formed at intervals between the disc blades 622.

[0058] The roller 623 is fitted onto the roller shaft 625 and fixedly connected to the roller shaft 625. Both ends of the roller shaft 625 are supported by bearings in the first bearing hole 621 and the second bearing hole 627, respectively, and the right end head of the roller shaft 625 passes through the right side of the first body 607 via a bearing. The hydraulic variable displacement motor 502 is provided outside the first body 607, and its power output shaft is connected to the right end of the roller shaft 625. The hydraulic fluid for the hydraulic variable displacement motor 502 is supplied from the hydraulic station 11 located in the relay station 10.

[0059] A first front plug 624 and a first rear plug 614 are provided on the front and rear vertical surfaces at the lower part of the interior of the first body 607. The first front plug 624 and the first rear plug 614 are the same size and both have rectangular tooth grooves. In the radial direction, the gap between the roller 623 and the front and rear vertical surfaces of the first body 607 engages with the first front plug 624 and the first rear plug 614, respectively. The first front plug 624 and the first rear plug 614 are fixed to the lower part of the interior of the first body 607, and their upper end faces are flush with the dividing surface between the upper and lower parts of the first body 607. The material of the first front plug 624 and the first rear plug 614 is a high-strength metal.

[0060] The rotation direction of the roller 623 is determined according to the direction in which the blade is mounted on the roller 623. When the rake face of the blade faces the upper end surface of the first rear plug 614, the roller 623 rotates clockwise when observed from the right end to the left end. Driven by the hydraulic variable displacement motor 502, the disc blade 622 of the roller 623 works in conjunction with the first rear plug 614 to roll, shear, and crush the ore, while the first front plug 624 closes the axial gap between the roller 623 and the front surface of the first body 607. Meanwhile, the roller 623 rotates counterclockwise, and driven by the hydraulic variable displacement motor 502, the disc blade 622 of the roller 623 works in conjunction with the first front plug 624 to roll, shear, and crush the ore, while the first rear plug 614 closes the axial gap between the roller 623 and the rear vertical surface of the first body 607. [Explanation of Symbols]

[0061] 1 Mothership 2. Ore lifting pipe 3. Mixed-flow pump 4 supply barrels 5. Crushing and feeding device 6 Supply pipe 7 Ore 10 Relay Stations 11 Hydraulic Station 12 holders 13 Undersea 501 Front gear 502 Hydraulic Variable Displacement Motor 503 Intermediate gear 504 Intermediate shaft 505 Intermediate bearing 506 Rear gear 507 Main Unit 5071 Top of the main unit 5072 Lower part of the main unit 511 First rear bearing hole 512 Rear Disc Blade 513 Rear Roller 514 Rear Plug 515 Rear roller axle 516 Rear partition groove 517 Second rear bearing hole 518 Rear blade part 519 Rear storage groove 521 First front bearing hole 522 Front Disc Blade 523 Front Roller 524 Front Plug 525 Front roller shaft 526 Front partition groove 527 Second front bearing hole 528 Front blade part 529 Front storage groove 530 Front End Cap 5301 Protrusion 531 Rear End Cap 607 Main body 614 1st Rear Plug 616 First rear partition groove 621 First bearing hole 622 Disc Blade 623 Laura 624 1st Front Plug 625 Roller shaft 626 First front partition groove 627 Second bearing hole

Claims

1. A crushing and feeding device, A crushing and feeding device comprising a main body and a hydraulic motor, wherein the main body is a rectangular tube shape with an upper and lower part in communication, the upper end being an inlet and the lower end being an outlet, the main body contains at least one roller inside, the roller is fitted onto a corresponding roller shaft, both ends of the roller shaft are supported by bearings in bearing holes at both the left and right ends of the main body, at least three equally spaced disc blades of the same specifications are provided in the axial direction of the roller, each disc blade is provided with at least one cutting edge, plugs are provided on both the front and rear vertical surfaces of the main body, the plugs fit into the gap from the roller to the vertical surface of the main body, and the hydraulic motor is provided outside the main body, its power output shaft is connected to the roller shaft.

2. The main body has a front roller and a rear roller inside, the front roller and the rear roller are the same shape and size, the front roller and the rear roller are reversed left and right in the axial direction and fitted and fixed to the corresponding front roller shaft and rear roller shaft, respectively, the head portion at the right end of the front roller shaft passes through the right side of the main body and is fixedly connected to the front gear, the head portion at the right end of the rear roller shaft passes through the right side of the main body and is fixedly connected to the rear gear, an intermediate gear for transmitting power is provided between the front gear and the rear gear, the intermediate shaft of the intermediate gear is fixedly connected to the main body, and the power output shaft of the hydraulic motor is connected to the front roller shaft. The crushing and feeding device according to claim 1, characterized in that at least three front disc blades of the same specifications and at equal intervals are provided in the axial direction of the front roller, at least three rear disc blades of the same specifications and at equal intervals are provided in the axial direction of the rear roller, there is a front partition groove between adjacent front disc blades, there is a rear partition groove between adjacent rear disc blades, the front partition groove and the rear partition groove are fitted to the rear disc blade and the front disc blade, respectively, each front disc blade is provided with at least one front cutting portion, and each rear disc blade is also provided with at least one rear cutting portion, and the cutting blades of the front cutting portion and the rear cutting portion are provided with a front housing groove and a rear housing groove in the radial direction of the disc blade, respectively.

3. The crushing and feeding device according to claim 2, characterized in that the gap between the top of the front disc blade and the bottom of the rear partition groove, and the gap between the top of the rear disc blade and the bottom of the front partition groove are both δ.

4. The crushing and feeding device according to claim 2, characterized in that the depth H of the front partition groove and the rear partition groove is greater than the height h of the front blade portion and the rear blade portion.

5. The crushing and feeding device according to claim 2, characterized in that the front gear and the rear gear have the same number of teeth.

6. The crushing and feeding device according to claim 2, characterized in that the blades of the front roller and the rear roller are distributed in a multi-head spiral shape in the axial direction of the front roller and the rear roller.

7. The crushing and feeding device according to claim 2, characterized in that the material of the front disc blade and the front and rear blade portions of the rear disc blade is high-strength steel or synthetic diamond.

8. The crushing and feeding device according to claim 2, characterized in that end caps are provided on both the left and right ends of the front roller and the rear roller.

9. The crushing and feeding device according to claim 8, wherein the main body includes two parts, an upper and a lower, which are integrally connected by a flange, and the gap ε between the end caps at both the left and right ends of the front roller and the rear roller and the upper part of the main body is smaller than the gap E between the end caps at both the left and right ends of the front roller and the rear roller and the lower part of the main body.

10. The crushing and feeding device according to claim 9, characterized in that at least one radial projection is provided on the outer end surface of the end cap, extending from the inner diameter to the outer diameter, and the height of the projection is smaller than the gap ε between the end cap and the upper part of the main body.

11. The crushing and feeding device according to claim 1, wherein the main body includes two parts, an upper and a lower, which are integrally connected by a flange, and when the number of rollers in the crushing and feeding device is odd, the front plug and the rear plug are provided at the lower part of the main body, and the upper surfaces of the front plug and the rear plug are flush with the axis of the roller shaft.

12. The crushing and feeding device according to claim 1, characterized in that the hydraulic motor is a hydraulic variable displacement motor.

13. A deep-sea mining and transporting system comprising a relay station, a mixed-flow pump, a lifting pipe, and a mother ship, wherein the relay station is located on the seabed and is connected to the mother ship by a lifting pipe and a mixed-flow pump, wherein the relay station comprises a hydraulic station, a supply barrel, a supply pipe, and a crushing supply device according to any one of claims 1 to 12, wherein the supply barrel, the crushing supply device, and the supply pipe are connected sequentially from top to bottom, the lower opening of the supply pipe is connected to the lifting pipe, and the hydraulic fluid for the hydraulic motor is supplied from the hydraulic station.

14. The deep-sea mining and conveying system according to claim 13, characterized in that the supply barrel is a conical tube with a larger top and a smaller bottom, and its lower opening is provided with a flange and connected to the upper end of the crushing and feeding device.

15. The deep-sea mining and conveying system according to claim 13, characterized in that the supply pipe is conical in shape, with a larger top and a smaller bottom, with a square top and a circular bottom, the upper opening of which is provided with a flange and connected to the lower end of the crushing and supplying device, and the lower opening of which is provided with a flange and connected to the ore lifting pipe.

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