An abrasive waterjet nozzle device for assisting deep-sea mining

Abstract

This invention discloses an abrasive waterjet nozzle device for assisting deep-sea mining, comprising a mixing chamber, an acceleration chamber, a development chamber, a diffusion chamber, an abrasive inlet pipe, a swirl plate, and a mixer. The mixer includes a shell, a clockwise annular propeller, a counterclockwise annular propeller, and a bipolar counter-rotating mechanism. High-pressure water from the outside directly enters the mixing chamber, while abrasives enter the mixing chamber through the abrasive inlet pipe. The bipolar counter-rotating mechanism drives the clockwise and counterclockwise annular propellers to rotate in different directions, enhancing the mixing degree of the abrasive waterjet. The waterjet then enters the acceleration chamber, where a tapered structure design accelerates the abrasive waterjet, enhancing its crushing capacity. After entering the development and diffusion chambers, the abrasive waterjet undergoes secondary mixing enhancement. Simultaneously, the internal swirl plate forms four rotating outlets, ultimately ejecting four clusters of rotating jets. During mining operations, it exhibits excellent diffusion, mixing, and entrainment performance, reducing environmental disturbance.

Description

Technical Field

[0001] This invention relates to the field of deep-sea mining technology, and in particular to an abrasive waterjet nozzle device for assisting deep-sea mining. Background Technology

[0002] During deep-sea mining operations, the collection of polymetallic nodules, sediment disturbance and plume deposition, as well as the discharge of plume waste, not only damage the seabed morphology but also have adverse effects on the entire ocean water and the habitat of marine life. As the core component, the mining equipment is in direct contact with the seabed and determines the efficiency of mineral collection and the degree of sediment disturbance. Therefore, there is an urgent need to establish a design method for efficient, low-disturbance, and environmentally friendly polymetallic nodule collection devices.

[0003] In existing technologies, deep-sea mining vehicles directly cut and break seabed strata and polymetallic nodule ores by using mechanical cutters or drill bits mounted at the front end. This leads to rapid wear of the mechanical cutters. At the same time, the mining process generates high heat, which accelerates the wear of the mechanical cutters. Considering that deep-sea mining operations take place on the deep seabed, the maintenance of mining vehicles is difficult. This will seriously affect mining efficiency and may even cause deformation or damage to the mechanical cutters, leading to the interruption of mining operations.

[0004] Secondly, in existing technologies, the mechanical cutters of deep-sea mining vehicles cause a large number of clay particles to be lifted up when breaking the seabed strata, and spread into the surrounding seawater, forming so-called plumes. The spread, suspension and fall of plumes will seriously affect the visibility of the mining vehicle, causing obstruction of movement, and at the same time, it will disturb deep-sea organisms and damage the seabed ecosystem.

[0005] In addition, the water jet mining nozzles carried in existing deep-sea mining vehicles mainly use conventional conical nozzles. Due to the limitations of deep-sea operating depth, they require a lot of power consumption. Furthermore, the complex composition of seabed soil, coupled with the limited mining area of ​​conical nozzles, results in low mining efficiency of polymetallic nodules under high energy consumption conditions. Summary of the Invention

[0006] In view of this, the present invention proposes an abrasive waterjet nozzle device to assist deep-sea mining, which improves mining efficiency while avoiding damage to the seabed ecological environment.

[0007] The technical solution of this invention is implemented as follows:

[0008] A waterjet nozzle device for assisting deep-sea mining includes a mixing chamber, an acceleration chamber, a development chamber, a diffusion chamber, an abrasive inlet pipe, a swirl plate, and a mixer. The mixing chamber, acceleration chamber, development chamber, and diffusion chamber are arranged sequentially along the water flow direction. The development chamber has a gradually narrowing structure along the water flow direction, and the diffusion chamber has a gradually expanding structure along the water flow direction. The abrasive inlet pipe is symmetrically connected to the outer wall of the mixing chamber. The swirl plate is disposed in the development chamber and the diffusion chamber, dividing the outlet of the diffusion chamber into several rotating outlets. The mixer is disposed in the mixing chamber and includes a shell, a clockwise annular propeller, a counterclockwise annular propeller, and a bipolar counterclockwise mechanism. The shell is disposed inside the mixing chamber. The clockwise and counterclockwise annular propellers are disposed on the side of the shell near the development chamber. The bipolar counterclockwise mechanism is disposed inside the shell and is used to drive the clockwise and counterclockwise annular propellers to rotate in different directions.

[0009] Preferably, the bipolar counter-rotating mechanism includes a motor, a driving bevel gear, a clockwise bevel gear, a counter-clockwise bevel gear, a flange shaft, and a clockwise rotating cylinder. The motor is disposed inside the housing, and its output shaft is connected to the driving bevel gear. The driving bevel gear meshes with both the clockwise and counter-clockwise bevel gears. The clockwise and counter-clockwise bevel gears are arranged opposite to each other. One end of the clockwise rotating cylinder extends into the housing and is connected to the clockwise bevel gear. The clockwise annular propeller is disposed on the outer wall of the clockwise rotating cylinder. One end of the flange shaft is rotatably connected to the inside of the housing, and the other end extends out of the housing and passes through the clockwise rotating cylinder to connect with the counter-clockwise annular propeller. The counter-clockwise bevel gear is disposed on the flange shaft.

[0010] Preferably, the bipolar counter-rotating mechanism further includes a supporting bevel gear, which is disposed between the clockwise bevel gear and the counter-clockwise bevel gear, and meshes with the clockwise bevel gear and the counter-clockwise bevel gear respectively.

[0011] Preferably, the bipolar counter-rotating mechanism further includes a bearing, which is disposed inside the housing, and the end of the flange shaft located inside the housing is connected to the bearing.

[0012] Preferably, the mixer further includes a motor mount, which is disposed inside the housing, and the motor is mounted on the motor mount.

[0013] Preferably, the mixer further includes a gasket, a shim, and a sealing gasket, the gasket and the shim being disposed inside the clockwise rotating cylinder, the sealing gasket being disposed at the connection between the clockwise rotating cylinder and the clockwise rotating bevel gear, and the flange shaft passing through the sealing gasket, the gasket, and the shim in sequence.

[0014] Preferably, the mixer further includes a conical top cover and a support column. The conical top cover is disposed on the side of the housing away from the development chamber, and one end of the support column is connected to the outer wall of the housing, and the other end is connected to the inner wall of the mixing chamber.

[0015] Preferably, a plurality of guide fluids are arranged in an array on the swirl plate.

[0016] Preferably, both the clockwise and counterclockwise annular propellers include symmetrically arranged annular blades, and the annular blades are provided with a number of biomimetic teeth.

[0017] Preferably, the abrasive inlet tube includes alternating cylindrical abrasive inlet tubes and spherical abrasive inlet tubes, the end of the spherical abrasive inlet tube is embedded inside the cylindrical abrasive inlet tube, and the internal flow channel of the spherical abrasive inlet tube is configured as a tapered structure.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. It can generate abrasive water jets with uniform mixing properties. Its excellent crushing performance can effectively crush different soil types in high confining pressure seabed environments, enabling efficient and low-energy mining of polymetallic nodules.

[0020] 2. It can effectively enhance the mixing degree of abrasive and high-pressure water and the cavitation effect of the jet, and effectively maintain the stability of the nozzle, thus achieving the function of vibration reduction and noise reduction.

[0021] 3. The rotating abrasive water jet, which can generate excellent diffusion mixing and entrainment properties, can cool the mechanical cutting tools to a certain extent and reduce the disturbance to the seabed environment by entraining the surrounding seawater and clay particles raised by mining operations, thus greatly improving the environmental friendliness of mining operations.

[0022] 4. By arranging multiple mixing and turbulence enhancement synergistic subsystems, it is ensured that the nozzle can produce abrasive water jets with uniform mixing and good cavitation characteristics.

[0023] 5. By adopting a step-by-step chamber design, the structure is simple and reasonable, with good installation flexibility and structural stability. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an abrasive waterjet nozzle device for assisting deep-sea mining according to the present invention;

[0026] Figure 2 This is a cross-sectional view of an abrasive waterjet nozzle device for assisting deep-sea mining according to the present invention;

[0027] Figure 3 This is a schematic diagram of the mixer structure of an abrasive waterjet nozzle device for assisting deep-sea mining according to the present invention;

[0028] Figure 4 This is a cross-sectional view of the mixer of an abrasive waterjet nozzle device for assisting deep-sea mining according to the present invention;

[0029] Figure 5 This is a schematic diagram of the bipolar counter-rotation mechanism of an abrasive waterjet nozzle device for assisting deep-sea mining according to the present invention;

[0030] Figure 6 This is a schematic diagram of the swirl plate of an abrasive waterjet nozzle device for assisting deep-sea mining according to the present invention;

[0031] Figure 7 This is a schematic diagram of the counter-rotating annular propeller of an abrasive waterjet nozzle device for assisting deep-sea mining according to the present invention.

[0032] Figure 8 This is a schematic diagram of the abrasive cylindrical inlet pipe of an abrasive waterjet nozzle device for assisting deep-sea mining according to the present invention;

[0033] Figure 9 This is a schematic diagram of the abrasive spherical inlet pipe of an abrasive waterjet nozzle device for assisting deep-sea mining according to the present invention;

[0034] Figure 10 Time-frequency diagrams of outlet pressure oscillations at different diffusion angles;

[0035] In the diagram, 1. Mixing chamber; 2. Abrasive cylindrical inlet pipe; 3. Abrasive spherical inlet pipe; 4. Acceleration chamber; 5. Development chamber; 6. Diffusion chamber; 7. Guide fluid; 8. Swirl plate; 9. Mixer; 10. Support column; 11. Conical top cover; 12. Motor base; 13. Housing; 14. Drive bevel gear; 15. Motor; 16. Clockwise annular propeller; 17. Counterclockwise annular propeller; 18. Bearing; 19. Flange shaft; 20. Counterclockwise bevel gear; 21. Support bevel gear; 22. Clockwise bevel gear; 23. Clockwise cylinder; 24. Washer; 25. Gasket; 26. Sealing gasket; 27. Annular blade; 28. Bionic tooth. Detailed Implementation

[0036] To better understand the technical content of this invention, a specific embodiment is provided below, and the invention will be further described in conjunction with the accompanying drawings.

[0037] See Figures 1 to 9This invention provides an abrasive waterjet nozzle device for assisting deep-sea mining, comprising a mixing chamber 1, an acceleration chamber 4, a development chamber 5, a diffusion chamber 6, an abrasive inlet pipe, a swirl plate 8, and a mixer 9. The mixing chamber 1, acceleration chamber 4, development chamber 5, and diffusion chamber 6 are arranged sequentially along the water flow direction. The development chamber 5 has a gradually narrowing structure along the water flow direction, and the diffusion chamber 6 has a gradually expanding structure along the water flow direction. The abrasive inlet pipe is symmetrically connected to the outer wall of the mixing chamber 1, and the swirl plate 8 is disposed in the development chamber 5 and the diffusion chamber. In section 6, the outlet of the diffusion cavity 6 is divided into several rotating outlets; the mixer 9 is disposed in the mixing cavity 1, and includes a housing 13, a clockwise annular propeller 16, a counterclockwise annular propeller 17, and a bipolar counterclockwise mechanism. The housing 13 is disposed inside the mixing cavity 1, the clockwise annular propeller 16 and the counterclockwise annular propeller 17 are disposed on the side of the housing 13 near the development cavity 5, and the bipolar counterclockwise mechanism is disposed inside the housing 13 for driving the clockwise annular propeller 16 and the counterclockwise annular propeller 17 to rotate in different directions.

[0038] This invention discloses an abrasive waterjet nozzle device for assisting deep-sea mining, comprising a nozzle cavity structure and a mixer 9. The nozzle cavity structure includes a mixing cavity 1, an acceleration cavity 4, a development cavity 5, and a diffusion cavity 6 connected in sequence. An external high-pressure water inlet pipe can be connected to the mixing cavity 1, and an abrasive inlet pipe is provided outside the mixing cavity 1 to allow abrasive to enter the mixing cavity 1. When high-pressure water and abrasive enter the mixing cavity 1, the clockwise annular propeller 16 and the counterclockwise annular propeller 17 provided in the mixer 9 thoroughly and uniformly mix the abrasive and high-pressure water, which can solve the problem of large vibration during the abrasive and water mixing process leading to nozzle instability. At the same time, the bipolar counterclockwise mechanism drives the clockwise annular propeller 16 and the counterclockwise annular propeller 17 to rotate in different directions, which can further improve the mixing degree of the abrasive waterjet and also increase the cavitation effect of the high-pressure water flow.

[0039] The acceleration chamber 4 and diffusion chamber 6 employ a scaling structure design. The acceleration chamber 4 has a tapered internal structure to accelerate the abrasive water jet, enhancing its crushing ability. The diffusion chamber 6 has a expanding internal structure with a scaling angle of 40°. This angle design provides excellent jet energy retention, ensuring the nozzle is not clogged by abrasive particles or environmental clay particles. The development chamber 5 and diffusion chamber 6 serve as the outlets of the nozzle cavity structure, and each contains a swirl plate 8. The swirl plate 8 divides the development chamber 5 and diffusion chamber 6 into four swirling chambers, forming four rotating outlets. The abrasive water jet passes through the development chamber 5 and diffusion chamber 6... The dispersion cavity 6 enables secondary mixing enhancement, making the abrasive water jet mixing more uniform. At the same time, four clusters of rotating jets can be ejected from the nozzle. During mining operations, the ejected jets have excellent diffusion mixing and entrainment properties, which can entrain surrounding clay particles and environmental fluids over a wide range. This not only cools the mechanical cutting tools but also reduces the plume flow, thereby reducing environmental disturbance. At the same time, it can maintain the jet energy, ensuring the mining and crushing performance of the jet, effectively improving the mining efficiency of polymetallic nodules. Furthermore, it can entrain clay particles raised by mining operations, greatly reducing environmental disturbance.

[0040] Preferably, the bipolar counter-rotating mechanism includes a motor 15, a driving bevel gear 14, a clockwise bevel gear 22, a counter-clockwise bevel gear 20, a flange shaft 19, and a clockwise rotating cylinder 23. The motor 15 is disposed inside the housing 13, and its output shaft is connected to the driving bevel gear 14. The driving bevel gear 14 meshes with both the clockwise and counter-clockwise bevel gears 22 and 20, respectively. The clockwise and counter-clockwise bevel gears 22 and 20 are arranged opposite to each other. One end of the clockwise rotating cylinder 23 extends into the housing 13 and is connected to the clockwise bevel gear 22. The clockwise annular propeller 16 is disposed on the outer wall of the clockwise rotating cylinder 23. One end of the flange shaft 19 is rotatably connected to the inside of the housing 13, and the other end extends out of the housing 13 and passes through the clockwise rotating cylinder 23 to connect with the counter-clockwise annular propeller 17. The counter-clockwise bevel gear 20 is disposed on the flange shaft 19.

[0041] When uniformly mixing high-pressure water jet and abrasive, motor 15 can be started. Motor 15 drives the active bevel gear 14 to rotate. The active bevel gear 14 drives the clockwise bevel gear 22 and the counterclockwise bevel gear 20 meshing with its upper and lower sides to rotate in different directions. When the clockwise bevel gear 22 rotates, it drives the clockwise annular propeller 16 to rotate through the clockwise cylinder 23. When the counterclockwise bevel gear 20 rotates, it drives the flange shaft 19 to rotate. The flange shaft 19 passes through the clockwise bevel gear 22 and extends to the outside of the housing 13. It continues to pass through the clockwise cylinder 23 before connecting with the counterclockwise annular propeller 17. Thus, the flange shaft 19 can drive the counterclockwise annular propeller 17 to rotate, realizing the counterclockwise rotation of the clockwise annular propeller 16 and the counterclockwise annular propeller 17, thereby improving the mixing degree of the abrasive water jet.

[0042] Preferably, the bipolar counter-rotating mechanism further includes a support bevel gear 21, which is disposed between the clockwise bevel gear 22 and the counter-clockwise bevel gear 20, and meshes with the clockwise bevel gear 22 and the counter-clockwise bevel gear 20 respectively.

[0043] To ensure that the driving bevel gear 14 can smoothly drive the clockwise bevel gear 22 and the counterclockwise bevel gear 20 to rotate, a support bevel gear 21 is also provided between the clockwise bevel gear 22 and the counterclockwise bevel gear 20 to realize the support function for the clockwise bevel gear 22 and the counterclockwise bevel gear 20 and the effective transmission of rotational force.

[0044] Preferably, the bipolar counter-rotating mechanism further includes a bearing 18, which is disposed inside the housing 13, and the end of the flange shaft 19 located inside the housing 13 is connected to the bearing 18.

[0045] The bearing 18 provided can support the flange shaft 19 to rotate, thereby driving the counter-rotating annular propeller 17 to rotate.

[0046] Preferably, the mixer 9 further includes a motor base 12, which is disposed inside the housing 13, and the motor 15 is disposed on the motor base 12.

[0047] The motor mount 12 is provided for mounting the motor 15 so that the motor 15 can stably drive the drive bevel gear 14 to rotate.

[0048] Preferably, the mixer 9 further includes a washer 24, a gasket 25, and a sealing gasket 26. The washer 24 and the gasket 25 are disposed inside the clockwise rotating cylinder 23, and the sealing gasket 26 is disposed at the connection between the clockwise rotating cylinder 23 and the clockwise rotating bevel gear 22. The flange shaft 19 passes through the sealing gasket 26, the washer 24, and the gasket 25 in sequence.

[0049] A sealing gasket 26 is provided at the bottom of the housing 13 for sealing, and a gasket 24 and a gasket 25 are arranged below the sealing gasket 26 to achieve the compression of the mixer 9.

[0050] Preferably, the mixer 9 further includes a conical top cover 11 and a support column 10. The conical top cover 11 is disposed on the side of the housing 13 away from the development chamber 5. One end of the support column 10 is connected to the outer wall of the housing 13, and the other end is connected to the inner wall of the mixing chamber 1.

[0051] The conical top cover 11 is installed on the top of the mixer 9, which can effectively achieve the function of guiding the flow. In order to ensure the stability of the mixer 9, a support column 10 is set on its outer surface. The support column 10 is fixed inside the mixer 9. When the high-pressure water flow and abrasive enter the mixing chamber 1, they will come into contact with the conical top cover 11. Under the guiding effect of the conical top cover 11, the water flow and abrasive will flow to the positions of the clockwise annular propeller 16 and the counterclockwise annular propeller 17.

[0052] Preferably, a plurality of guide fluids 7 are arranged in an array on the swirl plate 8.

[0053] The swirl plate 8 adopts a spiral structure, and since the interior of the diffuser cavity 6 has a gradually expanding structure, the part of the swirl plate 8 located inside the diffuser cavity 6 also has a gradually expanding structure, so as to divide the internal space of the diffuser cavity 6. The design of the guide fluid 7 can utilize the Karman vortex street principle to increase the turbulence of the jet, improve the mixing capacity and oscillation performance.

[0054] Preferably, both the clockwise annular propeller 16 and the counterclockwise annular propeller 17 include symmetrically arranged annular blades 27, and the annular blades 27 are provided with a plurality of biomimetic teeth 28.

[0055] As the rotational speed increases, the mixing of abrasive particles and high-pressure water, as well as the cavitation effect of the blades, will cause strong vibrations and noise. The clockwise annular propeller 16 and the counterclockwise annular propeller 17 of this invention adopt a symmetrically arranged annular blade 27 design, which has excellent vibration reduction and noise reduction effects and can maintain the stability of the nozzle structure. At the same time, based on biomimetic design, biomimetic teeth 28 are respectively set on the annular blades 27, which can significantly increase the turbulence of the abrasive water jet, enabling the abrasive and high-pressure water to mix efficiently and uniformly, thereby improving the mining and crushing capacity of the nozzle cavity structure in the high confining pressure seabed environment.

[0056] Preferably, the abrasive inlet pipe includes alternating abrasive cylindrical inlet pipes 2 and abrasive spherical inlet pipes 3, the end of the abrasive spherical inlet pipe 3 is embedded inside the abrasive cylindrical inlet pipe 2, and the internal flow channel of the abrasive spherical inlet pipe 3 is configured as a tapered structure.

[0057] The abrasive cylindrical inlet tube 2 and the abrasive spherical inlet tube 3 are connected alternately, which can realize the free bending of the abrasive inlet tube. The tapered design of the flow channel of the abrasive spherical inlet tube 3 can pre-accelerate the abrasive to a certain extent.

[0058] Reference Figure 10 To illustrate the effect of the jet development induction technology of the present invention, a specific embodiment is provided.

[0059] This embodiment compares the time-frequency characteristics of different diffusion angles, from... Figure 10As can be seen, the unsteady flow of the jet at the outlet exhibits a significant dependence on the diffusion angle, with nozzles at different diffusion angles showing significant differences in instantaneous frequency. For the 27° diffusion angle structure, the transient pressure pulsation of the jet has the widest frequency band, concentrated in the 50-5000Hz range. This frequency band has a significant energy proportion, indicating that the jet's energy is unstable during development under this structure, leading to the shedding of a large number of cavitation bubbles, which in turn causes the widest energy frequency band. In contrast, the jet with a 40° diffusion angle has a significant energy proportion in the low-frequency range of around 200Hz, and the energy amplitude is concentrated, indicating that the jet's energy is relatively stable during development under this structure, with only a small number of small-scale cavitation bubbles shedding from the mainstream. When the diffusion angle continues to increase to 60°, the pressure pulsation frequency band widens significantly again, with energy concentrated in the 50-1000Hz range. Its energy stability is obviously not as good as the 40° diffusion angle structure. These comparisons demonstrate that a 40° diffusion angle design can better maintain the energy stability of the jet, thereby producing a better auxiliary mining effect.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An abrasive waterjet nozzle device for assisting deep-sea mining, characterized in that, The system includes a mixing chamber, an acceleration chamber, a development chamber, a diffusion chamber, an abrasive inlet pipe, a swirl plate, and a mixer. The mixing chamber, acceleration chamber, development chamber, and diffusion chamber are arranged sequentially along the water flow direction. The development chamber has a gradually narrowing structure along the water flow direction, and the diffusion chamber has a gradually expanding structure along the water flow direction. The abrasive inlet pipe is symmetrically connected to the outer wall of the mixing chamber. The swirl plate is disposed in the development chamber and the diffusion chamber, dividing the outlet of the diffusion chamber into several rotating outlets. The mixer is disposed in the mixing chamber and includes a shell, a clockwise annular propeller, a counterclockwise annular propeller, and a bipolar counterclockwise mechanism. The shell is disposed inside the mixing chamber. The clockwise and counterclockwise annular propellers are disposed on the side of the shell near the development chamber. The bipolar counterclockwise mechanism is disposed inside the shell and is used to drive the clockwise and counterclockwise annular propellers to rotate in different directions.

2. The abrasive waterjet nozzle device for assisting deep-sea mining according to claim 1, characterized in that, The bipolar counter-rotating mechanism includes a motor, a driving bevel gear, a clockwise bevel gear, a counter-clockwise bevel gear, a flange shaft, and a clockwise rotating cylinder. The motor is located inside the housing, and its output shaft is connected to the driving bevel gear. The driving bevel gear meshes with both the clockwise and counter-clockwise bevel gears. The clockwise and counter-clockwise bevel gears are arranged opposite to each other. One end of the clockwise rotating cylinder extends into the housing and is connected to the clockwise bevel gear. The clockwise annular propeller is located on the outer wall of the clockwise rotating cylinder. One end of the flange shaft is rotatably connected to the inside of the housing, and the other end extends out of the housing and passes through the clockwise rotating cylinder to connect with the counter-clockwise annular propeller. The counter-clockwise bevel gear is located on the flange shaft.

3. The abrasive waterjet nozzle device for assisting deep-sea mining according to claim 2, characterized in that, The bipolar counter-rotating mechanism also includes a support bevel gear, which is disposed between the clockwise bevel gear and the counter-clockwise bevel gear, and meshes with the clockwise bevel gear and the counter-clockwise bevel gear respectively.

4. The abrasive waterjet nozzle device for assisting deep-sea mining according to claim 2, characterized in that, The bipolar counter-rotating mechanism also includes a bearing, which is disposed inside the housing, and the end of the flange shaft located inside the housing is connected to the bearing.

5. The abrasive waterjet nozzle device for assisting deep-sea mining according to claim 2, characterized in that, The mixer also includes a motor mount, which is disposed inside the housing, and the motor is mounted on the motor mount.

6. The abrasive waterjet nozzle device for assisting deep-sea mining according to claim 2, characterized in that, The mixer also includes gaskets, washers, and sealing gaskets. The gaskets and washers are disposed inside the clockwise rotating cylinder, and the sealing gasket is disposed at the connection between the clockwise rotating cylinder and the clockwise rotating bevel gear. The flange shaft passes through the sealing gasket, gasket, and washer in sequence.

7. The abrasive waterjet nozzle device for assisting deep-sea mining according to claim 1, characterized in that, The mixer also includes a conical top cover and a support column. The conical top cover is located on the side of the housing away from the development chamber. One end of the support column is connected to the outer wall of the housing, and the other end is connected to the inner wall of the mixing chamber.

8. The abrasive waterjet nozzle device for assisting deep-sea mining according to claim 1, characterized in that, Several guide fluids are arranged in an array on the swirl plate.

9. The abrasive waterjet nozzle device for assisting deep-sea mining according to claim 1, characterized in that, Both the clockwise and counterclockwise annular propellers include symmetrically arranged annular blades, and the annular blades are provided with several biomimetic teeth.

10. The abrasive waterjet nozzle device for assisting deep-sea mining according to claim 1, characterized in that, The abrasive inlet tube includes alternating cylindrical abrasive inlet tubes and spherical abrasive inlet tubes. The end of the spherical abrasive inlet tube is embedded inside the cylindrical abrasive inlet tube, and the internal flow channel of the spherical abrasive inlet tube is configured as a tapered structure.

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