Flexible wire conveying device based on Tesla valve structure

Abstract

The invention belongs to the technical field of fiber washing and conveying, and particularly relates to a flexible yarn conveying device based on a Tesla valve structure. The device comprises a Tesla valve pipe consisting of at least one straight pipe a, at least one straight pipe b and at least one arc-shaped pipe, wherein an included angle between the central axis of the straight pipe a and the central axis of the straight pipe b is 20-60 degrees; the fiber feeding device further comprises a fiber feeding groove, a plurality of hollow cylindrical sealing sliding blocks are embedded in an inlet of the fiber feeding groove, and each sealing sliding block can rotate around the center axis of the sealing sliding block in the horizontal plane. The number of the Tesla valve pipes is the same as that of the sealing sliding blocks, the forward outlet of each Tesla valve pipe is communicated with the hollow part of the corresponding sealing sliding block, and the hollow part of each sealing sliding block is communicated with the interior of the fiber feeding groove. The device can meet the requirements for long-distance, large-fall and large-flow production and preparation of the flexible filaments in the washing conveying process, the problems that a flow field is unstable and the installation layout of a conveying device is limited are solved, online maintenance is facilitated, and the production cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of fiber water washing and conveying, and particularly relates to a flexible fiber conveying device based on a Tesla valve structure. Background Art

[0002] The conveyor pipe is a key component of fiber post-processing equipment in the chemical fiber industry, located between the cutter and the fiber feed trough. Its primary function is to transport viscose or lyocell staple fibers cut by the cutter to the fiber feed trough. During this process, it also disperses clumping fibers to prevent them from becoming entangled. This improves the uniformity of laying and rinsing in subsequent processes, ultimately enhancing the quality of the finished fiber product.

[0003] Traditional conveying pipes, mostly straight round or square, have significant limitations in fiber opening. With industry development, the number of cutting machines has increased, conveying distances have lengthened, but the material inlet and outlet height gap has not increased accordingly. This problem of poor fiber conveying has become increasingly prominent in large-scale lyocell fiber post-processing lines with an annual output of 50,000 tons or more. Furthermore, traditional conveying pipes are limited in their functionality and cannot meet current demands. They result in poor fiber opening, leading to fiber entanglement, knotting, and accumulation, and high energy consumption.

[0004] Due to their inherent characteristics, flexible yarns place special demands on conveying pipes. Flexible yarns are prone to tangling, requiring pipes with robust loosening capabilities to fully break up fiber bundles and achieve optimal fiber separation. Flexible yarns are also soft and easily damaged, so gentle conveying methods must be employed to avoid excessive friction, stretching, or squeezing. Furthermore, the pipes must maintain stable delivery under varying production conditions to ensure uniform and continuous fiber transport.

[0005] However, existing conveying pipes are difficult to meet the conveying requirements of flexible yarns or flexible yarns with a large aspect ratio. During the conveying process, the conveying device between the cutting machine and the fiber feeding trough needs to meet the conveying characteristics of long distance, large drop and large flow. There is a height difference of about 4m between the two in the process layout. Existing conveying pipes are generally a simple combination of straight pipes or curved pipes, which lack flow directionality and are prone to backflow due to pressure fluctuations, resulting in fiber entanglement and clumping. Especially in high-drop and vertical conveying, the large impact makes the fiber flow field complex and changeable. Flexible yarns are easily disturbed by turbulence during flow, further aggravating the problems of entanglement, knotting or accumulation. At the same time, the small and soft characteristics of fibers make them difficult to observe during the conveying process, further amplifying the problem of flow field instability.

[0006] In addition, the existing conveying pipes are mainly fixed. Once the production line is installed and fixed, they cannot be moved flexibly, and the site environment layout is restricted. When the cutting machine fails or maintenance is required, the machine must be shut down and production cannot be carried out online. This not only reduces equipment utilization but also increases the difficulty of site layout.

[0007] Overall, existing conveying pipes present numerous challenges in conveying flexible filaments. These issues severely impact the quality of finished fiber products, leading to fiber clumping, blockages, and even production stoppages. Ensuring continuous and stable fiber production has become a pressing engineering challenge. Summary of the Invention

[0008] The purpose of the present invention is to solve the problems existing in the prior art and provide a flexible wire conveying device based on a Tesla valve structure.

[0009] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0010] A flexible wire conveying device based on a Tesla valve structure includes at least one conveying pipe, which is a Tesla valve pipe. The Tesla valve pipe is composed of at least one straight pipe a, at least one straight pipe b, and at least one arc-shaped pipe. When the number of straight pipes a is greater than 1, the straight pipes a are parallel to each other. When the number of straight pipes b is greater than 1, the straight pipes b are parallel to each other. The height of the forward inlet of the Tesla valve pipe is higher than the forward outlet. The angle between the central axis of the straight pipe a and the central axis of the straight pipe b is greater than 1. The value range of is 20-60°, which makes the forward inlet and the forward outlet of the Tesla valve tube have a certain slope, solving the problem of high drop in layout, realizing stepped fiber transportation, avoiding the large impact of vertical transportation in the existing transportation pipe, and making the fiber flow field more stable. If the angle between the central axis of the straight pipe a and the central axis of the straight pipe b is If it is too large or too small, strong turbulence and vortex phenomena will occur locally, which is not conducive to the stability of the flow field and cannot meet the needs of stable fiber transportation.

[0011] As the preferred technical solution:

[0012] As described above, the flexible filament conveying device based on the Tesla valve structure, the flexible filament is natural fiber and / or chemical fiber, has a length of 6-120 mm, an aspect ratio (ratio of length to diameter) of 1-650, and an elastic modulus of 1-3000 MPa.

[0013] In the flexible wire conveying device based on the Tesla valve structure as described above, the height difference between the center of the forward inlet and the center of the forward outlet of the Tesla valve tube is 10-4000 cm.

[0014] In the flexible wire conveying device based on the Tesla valve structure as described above, the angle between the central axis of the straight tube a and the central axis of the straight tube b is When the angle is 40°, the flow field is stable and the fiber transport evolution movement is smooth, which is more conducive to the fiber transport structure in engineering applications.

[0015] As described above, in a flexible wire conveying device based on a Tesla valve structure, the length y of the straight tube a is 100-1000 cm, the length x of the straight tube b is 100-1000 cm, and the radius R corresponding to the arc forming the center line of the arc-shaped tube is 20-300 cm; the inner diameters of the straight tube a, the straight tube b and the arc-shaped tube are all 10-100 cm.

[0016] In the flexible wire conveying device based on the Tesla valve structure as described above, the straight pipe a is arranged horizontally, and the forward outlet of the Tesla valve pipe is a pipe opening of the straight pipe a.

[0017] As described above, a flexible wire conveying device based on a Tesla valve structure also includes a fiber feeding groove, which is provided with a fiber feeding groove inlet, and a plurality of hollow cylindrical sealing sliders are installed on the fiber feeding groove inlet, and all the sealing sliders are nested in sequence from top to bottom by their own gravity, and each sealing slider can rotate around its own central axis in the horizontal plane, realizing independent rotation and movement in space, solving the problem that the existing conveying pipe cannot be maintained online and cannot be moved flexibly; the number of Tesla valve tubes and sealing sliders is the same, and the two correspond one to one, and the forward outlet of each Tesla valve tube is connected to the hollow part of the corresponding sealing slider, and the hollow part of each sealing slider is connected to the interior of the fiber feeding groove, and the forward inlet of each Tesla valve tube is connected to the outlet of the fiber cutting machine.

[0018] As described above, in a flexible wire conveying device based on a Tesla valve structure, the number of Tesla valve tubes and sealing sliders is 4, enabling multiple cutting machines to be equipped and operated simultaneously.

[0019] As described above, a flexible silk conveying device based on a Tesla valve structure, the fiber feeding trough consists of a first part and a second part arranged in parallel, the first part and the second part are both cubic structures and both include a top plate, the fiber feeding trough inlet is located on the top plate of the first part, an observation port is provided on the top plate of the second part, and a fiber feeding trough outlet is provided on the side of the second part away from the first part, the observation port and the fiber feeding trough outlet are each covered by a baffle, and the state of the fiber and water in the fiber feeding trough can be observed by opening the baffle.

[0020] The conveying device of the present invention adopts a Tesla valve structure. When the fluid passes through the Tesla valve in the forward direction, the fluid will form a backflow inside the valve, expand and then compress. This change in pressure difference generates thrust, allowing the fluid to pass through the valve more quickly, thereby achieving unidirectional conduction without the need for energy input, reducing conveying energy consumption.

[0021] The Tesla valve has a simple structure and is easy to design. By designing the angle between the straight pipe and the inclined pipe of the Tesla valve, the conveying pipeline presents a stepped layout, thereby realizing high-drop steep slope buffered conveying of the fluid; different angles will cause different flow field forms, causing the fiber to undergo different degrees of bending and deformation during the conveying process. Therefore, based on the fiber flow field form, with the pressure drop and fiber conveying speed of the conveying process as a reference, the optimal angle between the straight pipe and the inclined pipe can be determined, ensuring the stability of the fiber flow field.

[0022] The Tesla valve tube is connected to the fiber feeding slot via a sealing slider, enabling 360-degree rotation and adjustment to meet the needs of daily repair and maintenance layout. The number of Tesla valve tubes and sealing sliders is 4, which enables multi-station and high-flow production and transportation. When conveying fibers, if a problem occurs in one group of Tesla valve tubes, the other Tesla valve tube groups can still maintain normal production operation and can be rotated 360 degrees for layout and repair and maintenance, avoiding the risk of line stoppage and improving production efficiency.

[0023] Overall, this invention cleverly incorporates the design concept of the Tesla valve structure, creating a completely new design for the conveying device. The design of a sealing slider allows for flexible movement of multiple Tesla valve pipes. Simply changing the angle between the straight and inclined Tesla valve pipes achieves a stepped conveying pipeline layout and stable flow field, meeting the needs of high-flow, multi-pipe, and high-drop production, maximizing conveying efficiency and reducing energy consumption.

[0024] Beneficial effects:

[0025] The flexible silk conveying device based on the Tesla valve structure of the present invention has a simple structure, is easy to use, safe and reliable, and is convenient for online production and maintenance. It meets the needs of long-distance, large-drop and large-flow production and preparation of flexible silk in water washing and transportation, and solves the problems of unstable fiber conveying flow field and limited installation layout of conveying device in the prior art. It realizes the implementation process of continuous production and transportation and online maintenance without interference with each other, avoids the risk of line stoppage and production suspension, reduces production costs, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the structure of a flexible filament conveying device based on a Tesla valve structure; 1 - Tesla valve tube, 1.1 - straight tube a, 1.2 - straight tube b, 1.3 - curved tube, 2 - top plate, 3 - observation port, 4 - sealing slider, 5 - fiber feeding slot, 6 - fiber feeding slot outlet;

[0027] Figure 2 Schematic diagram of the Tesla valve tube of Examples 1-6;

[0028] Figure 3 This is the simulation result of Example 1;

[0029] Figure 4 This is the simulation result of Example 2;

[0030] Figure 5 This is the simulation result of Example 3;

[0031] Figure 6 This is the simulation result of Example 4;

[0032] Figure 7 This is the simulation result of Example 5;

[0033] Figure 8 This is the simulation result of Example 6;

[0034] Figure 9 is the simulation result of comparative example 1;

[0035] Figure 10 This is the simulation result of Comparative Example 2;

[0036] Figure 3-10 Among them, (a) is the fiber motion evolution behavior diagram, (b) is the fiber flow field velocity cloud diagram, (c) is the fiber flow field flow pattern vector diagram, and (d) is the fiber flow field pressure cloud diagram;

[0037] Figure 11 is the conveying fiber pressure drop of Examples 1-5;

[0038] Figure 12 is the fiber outlet velocity of Examples 1-5;

[0039] Figure 13 Schematic diagram showing the length of straight tube a, the length of straight tube b, the radius of the arc forming the center line of the curved tube, and the angle between the central axis of straight tube a and the central axis of straight tube b. DETAILED DESCRIPTION

[0040] Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments are only used to illustrate the present invention and are not used in limiting the scope of the present invention.In addition, should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall equally within the scope limited by the appended claims of the application.

[0041] A flexible wire conveying device based on a Tesla valve structure, such as Figure 1 As shown, it includes a delivery pipe, a fiber feeding groove 5, and a sealing slider 4;

[0042] The fiber feeding trough 5 is composed of a first part and a second part arranged in parallel. The first part and the second part are both cubic structures and include a top plate 2. The top plate 2 of the first part is provided with a fiber feeding trough inlet, the top plate 2 of the second part is provided with an observation port 3, and the side of the second part facing away from the first part is provided with a fiber feeding trough outlet 6. The observation port 3 and the fiber feeding trough outlet 6 are each covered by a baffle.

[0043] The sealing sliders 4 are hollow cylindrical and there are four of them. All of them are installed on the inlet of the fiber feeding slot. All of them are nested in sequence from top to bottom. Each of them can rotate around its own central axis in the horizontal plane. The hollow part of each of them is connected to the interior of the fiber feeding slot 5.

[0044] The delivery pipe is a Tesla valve pipe 1, which consists of at least one straight pipe a1.1, at least one straight pipe b1.2 and at least one curved pipe 1.3. When the number of straight pipes a1.1 is greater than 1, the straight pipes a1.1 are parallel to each other. When the number of straight pipes b1.2 is greater than 1, the straight pipes b1.2 are parallel to each other. The straight pipes a1.1 are arranged horizontally. The forward outlet of the Tesla valve pipe 1 is a pipe opening of a straight pipe a1.1. The height of the forward inlet of the Tesla valve pipe 1 is higher than the forward outlet. Figure 13 As shown, the length of the straight tube a 1.1 is denoted as y, which is 100-1000 cm, the length of the straight tube b 1.2 is denoted as x, which is 100-1000 cm, the radius of the arc forming the center line of the arc tube 1.3 is denoted as R, which is 20-300 cm, and the angle between the center axis of the straight tube a 1.1 and the center axis of the straight tube b 1.2 is denoted as , The value range is 20-60°; the inner diameters of the straight tube a 1.1, the straight tube b 1.2, and the arc tube 1.3 are all 10-100 cm; the number of Tesla valve tubes 1 is the same as the sealing slider 4, and the two correspond one to one, and the forward outlet of each Tesla valve tube 1 is connected to the hollow part of the corresponding sealing slider 4;

[0045] The flexible filaments are natural fibers and / or chemical fibers, have a length of 6-120 mm, an aspect ratio of 1-650, and an elastic modulus of 1-3000 MPa.

[0046] The following model simulation is used to explore the kinematics of the fiber and fluid during the conveying process of the flexible filament conveying device based on the Tesla valve structure. The specific steps are as follows:

[0047] (1) Conduct 3D geometric modeling of the flexible wire conveying device based on the Tesla valve structure and save it as an STP file; import the STP file into SpaceClaim to extract the fluid domain and save the fluid domain file;

[0048] (2) Import the fluid domain file into Fluent, generate a tetrahedral mesh, and select the Realizable κ-ε turbulence model to describe the turbulent momentum equation and turbulent dissipation rate; set the boundary conditions: the fluid domain is set to water, the inlet is the velocity inlet (flow velocity 2m / s), and the outlet is the pressure outlet; use the SIMPLE algorithm to solve the two-phase coupled Navier-Stokes equations (calculation time step number 1000, time step length 0.001s, maximum number of iterations 20); after the calculation is completed, save the cas and dat files to obtain information such as the fluid phase velocity field and pressure field;

[0049] The Realizable κ-ε model is as follows:

[0050] ;

[0051] Where, is the turbulent kinetic energy (m² / s²); is the turbulent dissipation rate (m² / s³); is the fluid viscosity (Pa·s); is the turbulent viscosity (Pa·s); is the kinematic viscosity (Pa·s); is the coordinate direction in the Cartesian coordinate system, ; are the velocity components of the fluid in the three directions in the Cartesian coordinate system (m / s); and All are model constants with values ​​of 1.44, 1.9, 1.0, 1.2, 4.0, and 4.2 respectively; is the fluid density (kg / m³); is time (s);

[0052] The two-phase coupled Navier-Stokes equations are as follows:

[0053] The mass conservation equation of the fiber:

[0054] ;

[0055] Momentum governing equation:

[0056] ;

[0057] In the two-phase coupled Navier-Stokes equations, is the fluid porosity (the fluid porosity indicates the volume fraction occupied by the fluid in the control volume); is the fluid density (kg / m³); is the fluid velocity (m / s); is the fluid pressure (Pa); is time (s); is the acceleration due to gravity (m / s²); is the stress tensor (Pa); The external volume force on the fiber particles in the fluid (such as the drag force, lift force and source term of force, in N / m³);

[0058] (3) The flexible filament was established using the Bonding V2 contact model in EDEM. The fiber physical parameters (diameter 60 μm, length 38 mm, density 1750 kg / m³) and mechanical properties (elastic modulus 122 MPa, Poisson's ratio 0.3) were set. The interaction parameters between the fiber particles were defined as follows: the restitution coefficient was 0.3, the static friction coefficient was 0.5, and the rolling friction coefficient was 0.01. The bonding parameters were set as follows: the normal bonding stiffness and the tangential bonding stiffness were 1.86 × 10¹, respectively. 0 N·m - ³ and 1.347×10¹ 0 N·m - The critical normal and tangential strengths are both 2×10¹¹ Pa, and the bond creation time is "current time." A piping material, "PipingMaterial," is created and its mechanical properties are defined (density 7500 kg / m³, Poisson's ratio 0.25, and shear modulus 1e+10Pa). In the fiber-pipe material interaction, the restitution coefficient is set to 0.2, the static friction coefficient is set to 0.5, and the rolling friction coefficient is set to 0.01. The fiber generation plant parameters are set (production speed 0.05 kg / s), the simulation time is 1 second, and the time step is 0.001 second. The fiber motion is calculated by solving the translational and rotational motion equations to obtain simulation results (fiber motion evolution behavior diagram, fiber flow field velocity cloud diagram, fiber flow field flow pattern vector diagram, and fiber flow field pressure cloud diagram).

[0059] The equations of motion for translation and rotation are as follows:

[0060] Translation equation:

[0061] ;

[0062] Rotation equation:

[0063] ;

[0064] In the translational and rotational motion equations, Flexible wire Mass (kg); For the Translational velocity of the fiber node ball (m / s); For the The angular velocity of the fiber node ball (rad / s); is the acceleration due to gravity (m / s²); is time (s); For fiber moment of inertia (kg·m²); For the and Contact force between fiber nodes and balls (N); is the force between the fiber and the fluid (N); For the and Tangential friction torque between fiber node balls (N·m); For the and Rolling friction torque between fiber node balls (N·m);

[0065] The dimensional parameters of the flexible wire conveying device based on the Tesla valve structure in each embodiment and comparative example are shown in Table 1:

[0066] Table 1

[0067]

[0068] The simulation results of Examples 1-6 and Comparative Examples 1-2 are as follows: Figures 3 to 10 As shown, by comparing the fiber motion evolution behavior diagrams of Examples 1-5 and Comparative Examples 1-2, it can be seen that different The performance of the fiber in the flow field is as follows: When the angle is 10°, the fiber undergoes obvious bending and entanglement in the flow field, and due to Too small, the height difference is small, and this angle is not suitable for the process layout of high-height production lines; When the angle is 20°, the bending and entanglement of the fiber is significantly slowed down; When the angle is 30°, the bending entanglement phenomenon slows down again; When the angle is 40°, the fiber does not show obvious bending and entanglement in the flow field; when When the angle increases to 50° and 60°, the bending entanglement phenomenon gradually intensifies; When the angle is 70°, the fiber is bent and entangled again. If the height difference is too large, the drop is close to 90° vertical, which causes excessive water impact and is not conducive to fiber transportation;

[0069] The main reason for the bending entanglement phenomenon is that the flow field between the straight tube a and the straight tube b easily forms a vortex phenomenon. In this area, due to the effect of the flow field, the fibers gather rapidly to form fiber clusters. The value of will affect the degree of vortex. The milder the vortex, the less obvious the bending and entanglement of the fiber in the flow field. The more severe the vortex, the more chaotic the flow field traces, which may lead to changes in the local flow field velocity, causing the fiber to bend and deform during transportation. Under a larger velocity gradient, the fiber bends and entangles into a cluster. It can be seen from the fiber flow field flow pattern vector diagrams of Examples 1 to 6 and Comparative Examples 1 to 2 that when When the angle is 20-60°, the vortex is relatively mild; in particular, when When the angle is 40°, there is basically no vortex phenomenon, the flow field trace is relatively stable, and no obvious velocity gradient phenomenon appears in the flow field;

[0070] By comparing the fiber flow field velocity cloud diagrams and fluid pressure cloud diagrams of Examples 1 to 5 and Comparative Examples 1 to 2, it can be seen that When the angle is 20-60°, the pressure drop of the transport fiber (the specific data of the pressure drop of the transport fiber of Examples 1 to 5 are as follows Figure 11 The fiber outlet speed (the specific data of the fiber outlet speed of Examples 1 to 5 are shown in FIG) is relatively small, and the fiber outlet speed (the specific data of the fiber outlet speed of Examples 1 to 5 are shown in FIG) is relatively small. Figure 12 (shown) is relatively large, indicating that when When the value is 20-60°, a higher conveying speed can be achieved at a lower energy consumption, thereby increasing the conveying capacity. In particular, when When the angle is 40°, the pressure drop of the conveying fiber is the smallest and the fiber outlet velocity is the largest, which means that at this angle, a higher conveying speed can be achieved with lower energy consumption and the conveying capacity can be improved.

[0071] By comparison Figure 5 and Figure 8 It can be seen that when the number of straight tubes a is greater, the fiber flow field is more stable and the fiber movement evolution behavior is smoother. This is because when the number of straight tubes a increases, the height difference between the center of the forward inlet and the center of the forward outlet of the Tesla valve tube also increases accordingly; according to the drop between the cutting machine and the fiber feeding trough in the production line, a stepped layout can be achieved, allowing the height difference between the inlet and outlet of the Tesla valve tube to be adjustable within the range of 10-4000cm. The sealing slider connection design is used to adapt to the vertical drop between different process sections. This height difference design can effectively adjust the conversion efficiency of fluid kinetic energy and potential energy. When the fluid flows from high to low, the potential energy is converted into kinetic energy. When conveying media such as fibers and hair, reasonable kinetic energy and potential energy conversion can suppress backflow and improve conveying stability.

Claims

1. A flexible wire conveying device based on a Tesla valve structure, characterized in that: The Tesla valve tube comprises at least one delivery pipe, which is a Tesla valve tube. The Tesla valve tube is composed of at least one straight tube a, at least one straight tube b and at least one arc tube. When the number of straight tubes a is greater than 1, the straight tubes a are parallel to each other. When the number of straight tubes b is greater than 1, the straight tubes b are parallel to each other. The height of the forward inlet of the Tesla valve tube is higher than the forward outlet. The angle between the central axis of the straight tube a and the central axis of the straight tube b is The value range is 20-60°.

2. A flexible wire conveying device based on a Tesla valve structure according to claim 1, characterized in that: The flexible filament is a natural fiber and / or a chemical fiber, has a length of 6-120 mm, an aspect ratio of 1-650, and an elastic modulus of 1-3000 MPa.

3. The flexible wire conveying device based on the Tesla valve structure according to claim 1, characterized in that: The height difference between the center of the forward inlet and the center of the forward outlet of the Tesla valve tube is 10-4000cm.

4. The flexible wire conveying device based on the Tesla valve structure according to claim 1, characterized in that: The angle between the central axis of straight tube a and the central axis of straight tube b is 40°.

5. The flexible wire conveying device based on the Tesla valve structure according to claim 1, characterized in that: The length y of the straight tube a is 100-1000cm, the length x of the straight tube b is 100-1000cm, the radius R corresponding to the arc forming the center line of the arc tube is 20-300cm; the inner diameters of the straight tube a, the straight tube b and the arc tube are all 10-100cm.

6. A flexible wire conveying device based on a Tesla valve structure according to any one of claims 1 to 5, characterized in that: The straight pipe a is arranged horizontally, and the forward outlet of the Tesla valve pipe is a pipe opening of the straight pipe a.

7. The flexible wire conveying device based on the Tesla valve structure according to claim 6, characterized in that: It also includes a fiber feeding groove, which is provided with a fiber feeding groove inlet, and a plurality of hollow cylindrical sealing sliders are installed on the fiber feeding groove inlet, and all the sealing sliders are nested in sequence from top to bottom, and each sealing slider can rotate around its own central axis in a horizontal plane; the number of Tesla valve tubes and sealing sliders is the same, and the two correspond one to one, and the forward outlet of each Tesla valve tube is connected with the hollow part of the corresponding sealing slider, and the hollow part of each sealing slider is connected with the interior of the fiber feeding groove.

8. The flexible wire conveying device based on the Tesla valve structure according to claim 7, characterized in that: The number of Tesla valve tubes and sealing sliders is 4.

9. The flexible wire conveying device based on the Tesla valve structure according to claim 7, characterized in that: The fiber feeding trough consists of a first part and a second part arranged in parallel, both of which are cubic structures and both include a top plate, the fiber feeding trough inlet is located on the top plate of the first part, an observation port is provided on the top plate of the second part, and a fiber feeding trough outlet is provided on the side of the second part facing away from the first part, and the observation port and the fiber feeding trough outlet are each covered by a baffle.

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