Wall-attached jet-type ore collecting, separating and conveying integrated collecting equipment and design method thereof

Abstract

The invention provides wall-attached jet-type ore collecting, separating and conveying integrated collecting equipment and a design method thereof, and belongs to the technical field of deep sea mineral resource collection. The equipment comprises a collection device for designing a coanda effect jet plate by adopting curve coordinates s-theta, a separation mechanism with a built-in grating, a hose conveying mechanism for correcting a generalized rose curve woven metal hose, a spreading mechanism, a conveying mechanism and a pumping device. The design method comprises the following steps: designing the coanda effect jet plate through a formula, and tangentially connecting the coanda effect jet plate with the lifting inclined pipe and the main spray pipe; defining a metal hose braided structure by using a modified generalized rose curve formula; and deriving a grid critical included angle in the separation bin based on fluid mechanics. The deep-sea tuberculosis ore collecting device efficiently integrates the ore collecting, separating and conveying functions, solves the problems that existing collecting equipment is low in efficiency, unreasonable in structural connection and the like, and remarkably improves the deep-sea tuberculosis ore collecting efficiency and the equipment reliability.

Description

Technical Field

[0001] The present invention relates to the field of mining equipment and fluid machinery technology, and in particular to an integrated mining equipment and design method for mining, separation and transportation based on the Coanda effect. The technology integrates multiple functions into one, aiming to improve the efficiency and quality of deep-sea nodule ore collection. Background Art

[0002] With the gradual depletion of terrestrial mineral resources, the development and utilization of deep-sea mineral resources have received more and more attention. Deep-sea nodule ores are rich in a variety of metal elements and have extremely high economic value. In the process of deep-sea mineral collection, the ore collection technology based on the Coanda effect jet has been applied to a certain extent. However, the existing curved plate of the ore collection head based on the Coanda effect jet usually adopts an arc shape, which makes the wall-attached jet grow unevenly and the jet growth rate unstable, resulting in uneven pressure difference force provided for the nodule ore, and the ore movement speed cannot be uniformly increased, which in turn affects the collection efficiency. In terms of pipeline connection of collection equipment, although metal hoses are often used for soft connections between pipelines and can compensate for large displacement deviations, the braided structure design of traditional metal hoses is not reasonable enough, and interference between wire strands is easy to occur, affecting the service life and performance of the hose. Moreover, in the integrated design of ore collection, separation, and transportation, the connection between the various structures is not optimized enough, and the determination of the grille angle in the separation bin lacks a scientific basis, resulting in the need to improve the working efficiency and stability of the entire collection equipment.

[0003] Therefore, there is an urgent need for an integrated collection equipment and design method for collecting, separating and transporting ore based on the Coanda effect to solve the problems existing in the prior art. Summary of the invention

[0004] The embodiment of the present invention provides a wall-attached jet-type integrated collection equipment for ore collection, separation and transportation and a design method thereof, which aims to solve the problems existing in the current technology, such as the unstable jet growth rate of the arc-shaped curved plate resulting in uneven distribution of ore lifting force, the metal hose being prone to vibration and wire strand interference under complex working conditions, and the lack of precise control method for the angle of the separation bin grille.

[0005] The core technology of the present invention is to optimize the linear growth characteristics of the jet through the logarithmic spiral Coanda effect ore collection cover, combine the modified generalized rose curve metal hose to suppress vibration, and derive the empirical formula of the critical angle γ of the separation chamber grid based on mechanical balance, so as to achieve efficient collection, stable transportation and precise separation of deep-sea minerals.

[0006] In the first aspect, the present invention provides a wall-jet type ore collection, separation and transportation integrated collection equipment, comprising: Visualization experimental pool; A conveyor belt is arranged along the length direction of the visualization experimental pool and is used to transport simulated ore particles; The material spreading mechanism, which is tapered along the depth direction of the visualization experimental water pool, is used to spread the simulated ore particles on the conveyor belt; The collecting device is installed above the conveyor belt, and includes a main nozzle, an auxiliary nozzle and a collecting hood. A logarithmic spiral Coanda effect curved panel is provided in the collecting hood, and is used to collect and transport the simulated ore particles on the conveyor belt to the conical hopper through a lifting inclined pipe; The conical hopper transports the simulated ore particles to the separation bin outside the visualization experiment pool through a hose; The separation bin is provided with a grid inside, a discharge port at the bottom, and a suction pump connected to the top through a suction pump pipeline. The grid can block the simulated ore particles so that the simulated ore particles are discharged from the discharge port.

[0007] Furthermore, the hose is provided with a section of metal hose, which comprises a metal mesh sleeve, a bellows and a joint as well as a connected float.

[0008] Furthermore, the projection curve of the metal mesh is defined by a modified generalized rose curve, expressed as:

[0009] Among them, R e It represents the nominal radius of the braided structure and determines the overall size of the mesh; h is the undulation height of the braided strands, which affects the flexibility and compressive strength of the mesh; N is the number of fluctuations of the braided strands within one pitch, which is used to control the braiding density; P is the braided strand pitch, which determines the helical characteristics of the braided structure; δ is an angle parameter used to parameterize the spatial position of the strands; x, y are the projection trajectories of the braided strands on the plane perpendicular to the axis of the hose described by polar coordinates; L is the axial movement distance of the braided strands, which is used to convert the angle parameters into actual displacement.

[0010] Furthermore, the logarithmic spiral Coanda effect curved panel is designed using the surface coordinate s-θ, and the specific formula is:

[0011] Among them, r is the straight-line distance from the origin O to the specified point on the curve, which is used to determine the spatial position of the logarithmic spiral Coanda effect curved panel; R is the radius of curvature of the specified point, which determines the degree of curvature of the curve at the specified point; θ is the angle from the origin to the specified point, which reflects the extension state of the curve along the direction of rotation; s is the curve parameter, which is used to scale the expansion rate of the logarithmic spiral and affect the density of the spiral.

[0012] Furthermore, the logarithmic spiral Coanda effect curved plate is smoothly connected with the lifting inclined tube and the main nozzle, wherein the smooth connection is defined as: The angle between the lifting inclined pipe and the horizontal plane is β=40~50°; The angle between the main nozzle wall and the horizontal plane is α=25~35°; The distance between the lowest point of the logarithmic spiral Coanda effect curved panel and the ground is between the upper distance threshold and the lower distance threshold; The logarithmic spiral Coanda effect curved plate is tangent to the lifting inclined tube at a first tangent point, and is tangent to the main nozzle at a second tangent point.

[0013] Furthermore, the critical angle γ between the grid and the horizontal plane is determined by the implicit equation:

[0014] Among them, F d is the fluid drag force component perpendicular to the flow direction; μ is the friction coefficient between the ore and the grid; m is the total mass of the simulated ore particles; g is the gravitational acceleration;

[0015] Among them, ρ f is the fluid density; v is the flow velocity; A is the total cross-sectional area of ​​the simulated ore particles; C d is the drag coefficient.

[0016] Furthermore, the empirical formula for the critical angle γ between the grid and the horizontal plane is:

[0017] Among them, ρ p is the density of ore, and d is the average particle size of simulated ore particles.

[0018] Further, the hose adopts a double-arch or single-arch configuration.

[0019] Furthermore, the simulated ore particles consist of quartz sand, cement and perlite.

[0020] In a second aspect, the present invention provides a design method for wall-attached jet type ore collection, separation, and transportation integrated collection equipment, comprising the following steps: The logarithmic spiral type Coanda effect curved plate is designed by using the logarithmic spiral formula, and is connected tangentially with the lifting inclined pipe and the main nozzle; The braided structure of the hose is defined using the modified generalized rose curve formula; Based on fluid mechanics, the critical angle γ of the grille in the separation chamber is derived; Integrate logarithmic spiral Coanda effect curved panels, hoses and separation chambers into the collection equipment.

[0021] The main contributions and innovations of the present invention are as follows: 1. Improved collection efficiency: Breaking through the traditional arc curved panel design, the logarithmic spiral Coanda effect curved panel is adopted to keep the wall jet growth rate constant, provide uniform pressure difference force for the ore, solve the problem of uneven jet in the existing technology that the ore movement speed cannot be uniformly increased, and significantly improve the collection efficiency of deep-sea nodule ore.

[0022] 2. Hose performance optimization: By modifying the generalized rose curve braided metal hose, the "one strand across three strands" interference-free braiding is achieved. Combined with the double-arch / single-arch configuration design, compared with traditional metal hoses, the problem of strand interference is solved, the hose flexibility, displacement compensation capability and service life are improved, and the equipment reliability is enhanced.

[0023] 3. Structural synergistic optimization: The Coanda effect jet plate is designed through a specific formula and is tangently connected with the lifting inclined pipe and the main nozzle to ensure a smooth flow field. The critical angle of the grid in the separation bin is determined by scientific formula derivation. Compared with the blindness of the separation structure design in the existing technology, it can achieve more efficient ore separation and achieve integrated and efficient operation of ore collection, separation and transportation as a whole.

[0024] The details of one or more embodiments of the invention are set forth in the following drawings and description so that other features, objects, and advantages of the invention are more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a structural schematic diagram of a wall-jet type ore collection, separation and transportation integrated collection equipment according to an embodiment of the present invention; Figure 2 is a design structure diagram of a collection device according to an embodiment of the present invention; Figure 3 is a structural diagram of a hose according to an embodiment of the present invention; Figure 4 is a schematic diagram of a double-arch configuration hose according to an embodiment of the present invention; Figure 5 Schematic diagram of a single-arch hose according to an embodiment of the present invention.

[0026] In the figure, 1. Visualization experimental water pool; 2. Conveyor belt; 3. Material spreading mechanism; 4. Collection device; 5. Hose; 6. Separation bin; 7. Suction pump pipeline; 8. Suction pump; 9. Conical hopper; 10. Impeller feeder; 21. Limiting plate; 41. Main nozzle; 42. Auxiliary nozzle; 43. Ore collecting cover; 431. Curved panel; 44. Lifting inclined pipe; 45. Main spray suction pump; 46. Auxiliary spray suction pump; 51. Metal mesh sleeve; 52. Bellows; 53. Joint; 61. Grille. DETAILED DESCRIPTION

[0027] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with one or more embodiments of this specification. Instead, they are merely examples of devices and methods consistent with some aspects of one or more embodiments of this specification as detailed in the appended claims.

[0028] It should be noted that: in other embodiments, the steps of the corresponding method are not necessarily performed in the order shown and described in this specification. In some other embodiments, the steps included in the method may be more or less than those described in this specification. In addition, a single step described in this specification may be decomposed into multiple steps for description in other embodiments; and multiple steps described in this specification may be combined into a single step for description in other embodiments.

[0029] The existing deep-sea mineral collection equipment based on Coanda effect jet has problems such as low collection efficiency, unreasonable metal hose weaving structure, poor structural connection between various parts, and lack of scientific design of separation chamber grille angle.

[0030] Based on this, the present invention solves the problems existing in the prior art based on a new design.

[0031] Embodiment 1 The present invention aims to propose a wall-jet integrated collection equipment method for ore collection, separation and transportation, by adopting a logarithmic spiral Coanda effect curved panel 431, a modified generalized rose curve to design a collection-transportation integrated hose 5 of a metal mesh sleeve 51, designing the Coanda effect jet plate through a specific formula and determining its connection method with other structures, and deriving a method for determining the critical angle between the grille 61 in the separation bin 6 and the horizontal plane, to achieve efficient integration of ore collection, separation and transportation.

[0032] Specifically, the embodiment of the present invention provides a wall jet type ore collection, separation, and transportation integrated collection equipment, specifically, referring to Figure 1 , the collection equipment includes: Visualization experiment pool 1, by building a controllable pool environment, reproduces the fluid mechanics conditions of deep-sea ore collection scenarios (such as water flow velocity and ore suspension state), provides a test scenario close to the real deep-sea working conditions for ore collection equipment, and ensures the feasibility of the technical solution in practical application; In this embodiment, the visualization experimental pool 1 uses the "visualization" feature to intuitively observe the changes in the internal flow field (such as the Coanda effect jet morphology), the ore movement trajectory, the ore separation process in the separation bin 6, etc. during the operation of the collection equipment, so as to analyze the working mechanism of the equipment and accurately locate the technical optimization points. Combined with the ore laid in the pool (such as simulated ore mixed with quartz sand, cement, and perlite), the jet effect of the logarithmic spiral curved panel 431 and the rationality of the critical angle design of the separation bin 6 grid 61 are tested, and the core technical parameters are verified through experimental data to provide a basis for equipment optimization. As an experimental carrier of integrated collection equipment (including paving mechanism 3, transmission mechanism, pumping device, etc.), it supports the linkage test of the entire process of ore collection, separation, and transportation, ensures the stability of the coordinated work of each component, and guarantees the reliability of the overall performance of the equipment.

[0033] The conveyor belt 2 is arranged along the length direction of the visualization experiment pool 1 and is used to transport the simulated ore particles; In this embodiment, the conveyor belt 2 is driven by a motor and is specially designed for underwater environments. The simulated nodule ore (simulated ore particles) is prepared by mixing quartz sand, cement, and perlite in a mixer to form a material with a specific gravity of 2, and then put into a ball making machine to knead into spherical particles with a diameter of 1-8 cm.

[0034] Preferably, a limiting plate 21 is further provided on the conveyor belt 2 to prevent the simulated ore particles discharged from the bottom of the paving mechanism 3 from leaking out of the conveyor belt 2 .

[0035] The material spreading mechanism 3 is a tapered structure along the depth direction of the visualization experimental water pool 1, and is used to spread the simulated ore particles on the conveyor belt 2; In this embodiment, the main function is to lay the simulated ore particles on the conveyor belt 2, which belongs to the equipment of the prior art. For example, the whole is in a gradually shrinking shape along the depth direction of the water pool, and is mainly composed of the following parts: Funnel-shaped feed port: located at the top, used to pour in ore (such as simulated nodule particles); Gradual conveying channel: the inner wall is smooth, guiding the ore to concentrate at the bottom of the pool; Flow control valve: adjust the ore falling speed and adapt the collection efficiency; Dispersion outlet (optional): A porous plate or a rotating nozzle is provided at the bottom to evenly spread the ore onto the conveyor belt 2.

[0036] Among them, this tapered shape helps to guide the ore to move toward the collection device 4 in a more orderly manner, and at the same time can gather the ore to a certain extent. In the shallow position of the pool, the opening of the paving mechanism 3 is larger and can accommodate more ore. As the depth increases, the opening gradually becomes smaller, so that the ore gradually concentrates during the downward movement, which is convenient for the subsequent collection device 4 to collect efficiently.

[0037] The collecting device 4 is mounted above the conveyor belt 2, and includes a main nozzle 41, an auxiliary nozzle 42 and a ore collecting cover 43. A logarithmic spiral Coanda effect curved panel 431 is provided in the ore collecting cover 43, and is used to collect and transport the simulated ore particles on the conveyor belt 2 to the conical hopper 9 through a lifting inclined pipe 44; In this embodiment, the main nozzle 41 is connected to the main spray-suction pump 45 through a pipeline, and the auxiliary nozzle 42 is connected to the auxiliary spray-suction pump 46 through a pipeline.

[0038] The logarithmic spiral Coanda effect curved panel 431 (hereinafter referred to as the curved panel 431) is designed using the curvilinear coordinate s-θ and the following formula:

[0039] Among them, r is the straight-line distance from the origin O to the specified point on the curve, which is used to determine the spatial position of the curved panel 431; R is the radius of curvature of the specified point, which determines the degree of curvature of the curve at the specified point; θ is the angle from the origin to the specified point, which reflects the extension state of the curve along the rotation direction; s is the curve parameter, which is used to scale the expansion rate of the logarithmic spiral and affect the density of the spiral.

[0040] 1) First, determine that the angle β between the lifting inclined tube 44 and the horizontal plane is 40-50°, then the upper plate L1 of the lifting inclined tube 44 can be determined.

[0041] 2) Determine the angle α between the wall L2 of the main nozzle 41 and the horizontal plane to be 25-35°.

[0042] 3) Adjust the position and direction of the curved panel 431 so that the distance H between the lowest point of the logarithmic spiral curve C and the ground is within the upper and lower distance thresholds H δ1 and H δ2 between.

[0043] 4) If Figure 2 As shown, the logarithmic spiral curve C is fitted with L1 and L2 so that C is tangent to L1 at point S 11 , C is tangent to L2 at point S1.

[0044] In this way, the curved plate 431 is smoothly connected with the lifting inclined pipe 44 and the jet main nozzle 41, the jet path is optimized, the smoothness and stability of the overall flow field of the collection device 4 are guaranteed, and the ore collection efficiency is improved. The curved plate 431 can use the Coanda effect to make the jet fluid flow along the surface of the jet plate, provide a pressure difference force for the ore, drive the ore to move, and achieve efficient collection.

[0045] The conical hopper 9 transports the simulated ore particles to the separation bin 6 outside the visualization experiment pool 1 through the hose 5; In this embodiment, the ore collected by the collection device 4 reaches the conical hopper 9 through the inclined ore collecting pipe, the hopper is connected to the impeller feeder 10, and then connected to a section of hose 5, the hose 5 is connected to the outside of the pool, and the outlet of the hose 5 is connected to the side of the separation bin 6. The impeller feeder 10 is an open design, and the surrounding water can flow into the impeller channel of the feeder.

[0046] Preferably, the present invention adopts a collection-transportation integrated design concept, which can take into account the vibration of the hose 5 and the collection device 4 under the combined action of the internal flow and the external flow. Figure 3 As shown, the hose 5 equipment includes a section of conveying metal hose 5. The metal hose 5 includes a metal mesh sleeve 51, a bellows 52, a joint 53 and a connected float. The present invention modifies the generalized rose curve to define the projection curve of the metal mesh sleeve 51, as shown in the following formula:

[0047] Among them, R e It represents the nominal radius of the braided structure and determines the overall size of the mesh; h is the undulation height of the braided strands, which affects the flexibility and compressive strength of the mesh; N is the number of fluctuations of the braided strands within one pitch, which is used to control the braiding density; P is the braided strand pitch, which determines the helical characteristics of the braided structure; δ is an angle parameter used to parameterize the spatial position of the strands; x, y are the projection trajectories of the braided strands on the plane perpendicular to the axis of the hose 5 described by polar coordinates; L is the axial movement distance of the braided strands, which is used to convert the angle parameters into actual displacement.

[0048] The traditional rose curve is r=α*sin(Nθ) (the meaning of the specific symbols is in the prior art and will not be repeated here), while the present invention superimposes R e and h*sin(Nδ) to form an offset rose curve, so that the strands can maintain the spiral trend during weaving, and can optimize the gap between the strands through the undulation height h and the number of fluctuations N to avoid interference. This design can achieve high-quality weaving of one strand across three strands without interference between the strands. That is, by modifying the generalized rose curve to define the projection curve of the metal mesh sleeve 51, the problems of strand interference and insufficient flexibility in the weaving of the traditional metal hose 5 are solved, and the "one strand across three strands" non-interference weaving is achieved, thereby improving the reliability of the hose 5 under complex working conditions.

[0049] Preferably, if Figure 4 and Figure 5 As shown, the hose 5 adopts a double arch or a single arch configuration.

[0050] The separation bin 6 is provided with a grid 61 inside, a discharge port at the bottom, and a suction pump 8 connected to the top through a suction pump pipeline 7. The grid 61 can block the simulated ore particles so that the simulated ore particles are discharged from the discharge port.

[0051] In this embodiment, the three pumps, namely the main and auxiliary jet pumps and the suction pump 8, are all fixed on a vertical bracket, and the mounting method, mounting position and structure of the bracket are not limited.

[0052] The separation bin 6 has a built-in grid 61. After the ore enters the separation bin 6 through the hose 5, it is blocked by the grid 61 and discharged from the lower outlet. The upper part of the separation bin 6 is connected to the suction pump pipeline 7. The suction action of the suction pump 8 provides the power for the ore to reach the separation bin 6 from the feeder outlet and realize solid-liquid separation.

[0053] Preferably, the critical angle γ between the grid 61 in the separation bin 6 and the horizontal plane is determined as follows: The gravity component of the ore entering the separation bin 6 along the inclined surface of the grid 61 is ; The drag force component of the fluid perpendicular to the flow direction is ; Normal support force for ; The sliding conditions of the ore particles need to be met, and the implicit equation of the critical angle γ is obtained:

[0054] Ignoring higher-order terms, the empirical formula for the critical angle γ is obtained:

[0055] Among them, F d is the fluid drag force component perpendicular to the flow direction; μ is the friction coefficient between the ore and the grid 61; m is the total mass of the simulated ore particles; g is the gravitational acceleration; ρ f is the fluid density; v is the flow velocity; A is the total cross-sectional area of ​​the simulated ore particles; C d is the drag coefficient; ρ p is the density of ore, and d is the average particle size of simulated ore particles.

[0056] In this way, the implicit equation of the critical angle γ is derived through the mechanical equilibrium equation and simplified into an empirical formula, which can be calculated based on the ore density (ρ p ), particle size (d) and flow rate (v) to dynamically adjust the grid angle to ensure that the ore slides along the grid for separation. The solid-liquid separation efficiency is significantly improved, reducing ore residue and fluid energy consumption.

[0057] In summary, the present invention optimizes the jet stability by logarithmic spiral curved panels, enhances the vibration resistance of the hose by weaving generalized rose curves, accurately controls the separation angle by mechanical equations, and implements modular integrated design. It comprehensively solves the problems of low collection efficiency, easy damage to hoses, incomplete separation, and complex systems in traditional deep-sea mining equipment, and significantly improves the comprehensive performance of ore collection, transportation, and separation, making it suitable for industrial applications in complex deep-sea working conditions.

[0058] Embodiment 2 Based on the same concept, the present invention also proposes a design method for a wall-jet type ore collection, separation and transportation integrated collection equipment, including: The following steps are involved: The logarithmic spiral type Coanda effect curved plate 431 is designed by the logarithmic spiral formula, and is tangentially connected with the lifting inclined pipe 44 and the main nozzle 41; The braided structure of the hose 5 is defined by using a modified generalized rose curve formula; Based on fluid mechanics, the critical angle γ of the grid 61 in the separation bin 6 is derived; The logarithmic spiral Coanda effect curved plate 431, the hose 5 and the separation chamber 6 are integrated into the collection equipment of the first embodiment.

[0059] Those skilled in the art should understand that the technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. Wall jet type ore collection, separation and transportation integrated collection equipment, characterized in that: include: Visualization experimental pool; A conveyor belt is arranged along the length direction of the visualization experimental water pool and is used to transport simulated ore particles; The material spreading mechanism, which is tapered along the depth direction of the visualization experimental water pool, is used to spread the simulated ore particles on the conveyor belt; A collection device is installed above the conveyor belt, comprising a main nozzle, an auxiliary nozzle and a collection cover, wherein a logarithmic spiral Coanda effect curved panel is provided in the collection cover, and is used to collect and transport the simulated ore particles on the conveyor belt into a conical hopper through a lifting inclined pipe; A conical hopper, which transports simulated ore particles to a separation bin outside the visualization experiment pool through a hose; The separation bin is provided with a grid inside, a discharge port at the bottom, and a suction pump connected to the top through a suction pump pipeline. The grid can block the simulated ore particles so that the simulated ore particles are discharged from the discharge port.

2. The wall-jet type ore collection, separation and transportation integrated collection equipment as claimed in claim 1, characterized in that: The hose is provided with a section of metal hose, which comprises a metal mesh sleeve, a bellows, a joint and a connected float.

3. The wall-jet type ore collection, separation and transportation integrated collection equipment as claimed in claim 2, characterized in that: The projection curve of the metal mesh sleeve is defined by a modified generalized rose curve, and the expression is: ； Among them, R e It represents the nominal radius of the braided structure and determines the overall size of the mesh; h is the undulation height of the braided strands, which affects the flexibility and compressive strength of the mesh; N is the number of fluctuations of the braided strands within one pitch, which is used to control the braiding density; P is the braided strand pitch, which determines the helical characteristics of the braided structure; δ is an angle parameter used to parameterize the spatial position of the strands; x, y are the projection trajectories of the braided strands on the plane perpendicular to the axis of the hose described by polar coordinates; L is the axial movement distance of the braided strands, which is used to convert the angle parameters into actual displacement.

4. The wall-jet type ore collection, separation and transportation integrated collection equipment as claimed in claim 1, characterized in that: The logarithmic spiral Coanda effect curved panel is designed using the surface coordinate s-θ, and the specific formula is: ； Among them, r is the straight-line distance from the origin O to the specified point on the curve, which is used to determine the spatial position of the logarithmic spiral Coanda effect curved panel; R is the radius of curvature of the specified point, which determines the degree of curvature of the curve at the specified point; θ is the angle from the origin to the specified point, which reflects the extension state of the curve along the direction of rotation; s is the curve parameter, which is used to scale the expansion rate of the logarithmic spiral and affect the density of the spiral.

5. The wall-jet type ore collection, separation and transportation integrated collection equipment as claimed in claim 4, characterized in that: The logarithmic spiral Coanda effect curved plate is smoothly connected with the lifting inclined tube and the main nozzle, wherein the smooth connection is defined as: The angle between the lifting inclined pipe and the horizontal plane is β=40~50°; The angle between the main nozzle wall and the horizontal plane is α=25~35°; The distance between the lowest point of the logarithmic spiral Coanda effect curved panel and the ground is between the upper distance threshold and the lower distance threshold; The logarithmic spiral Coanda effect curved plate is tangent to the lifting inclined tube at a first tangent point, and is tangent to the main nozzle at a second tangent point.

6. The wall-jet type ore collection, separation and transportation integrated collection equipment as claimed in claim 1, characterized in that: The critical angle γ between the grid and the horizontal plane is determined by the implicit equation: ； Among them, F d is the fluid drag force component perpendicular to the flow direction; μ is the friction coefficient between the ore and the grid; m is the total mass of the simulated ore particles; g is the gravitational acceleration; ； Among them, ρ f is the fluid density; v is the flow velocity; A is the total cross-sectional area of ​​the simulated ore particles; C d is the drag coefficient.

7. The wall-jet type ore collection, separation and transportation integrated collection equipment as claimed in claim 6, characterized in that: The empirical formula for the critical angle γ between the grid and the horizontal plane is: ； Among them, ρ p is the density of ore, and d is the average particle size of simulated ore particles.

8. The wall-jet type ore collection, separation and transportation integrated collection equipment according to any one of claims 1 to 7, characterized in that: The hose adopts a double-arch or single-arch configuration.

9. The wall-jet type ore collection, separation and transportation integrated collection equipment according to any one of claims 1 to 7, characterized in that: The simulated ore particles are composed of quartz sand, cement and perlite.

10. The design method of the wall jet type ore collection, separation and transportation integrated collection equipment according to any one of claims 1 to 9, characterized in that: The following steps are involved: The logarithmic spiral type Coanda effect curved plate is designed by using the logarithmic spiral formula, and is connected tangentially with the lifting inclined pipe and the main nozzle; The braided structure of the hose is defined using the modified generalized rose curve formula; Based on fluid mechanics, the critical angle γ of the grille in the separation chamber is derived; Integrate logarithmic spiral Coanda effect curved panels, hoses and separation chambers into the collection equipment.

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