A variable-pitch dynamic magnetization device based on a distributed pulley

Abstract

The application relates to the technical field of dust falling devices and discloses a variable-pitch dynamic magnetization device based on a distributed pulley, which comprises a pipeline assembly, a flow channel distribution module and a magnetization module. The pipeline assembly comprises a plurality of spiral pipelines arranged side by side. Each spiral pipeline is a hose and is wound around a corresponding horizontally-placed base column. The flow channel distribution module is used for distributing the solution to different spiral pipelines according to the physicochemical parameters of the solution. The magnetization module comprises a main electric permanent magnet and an auxiliary electric permanent magnet. The main electric permanent magnet and the auxiliary electric permanent magnet are arranged on opposite sides of the pipeline assembly at intervals and realize a composite magnetic field by dynamically adjusting the main magnetic field strength and the auxiliary magnetic field strength. A plurality of pulleys of each variable-pitch module are slidingly installed on a track, and each pulley is connected to a corresponding connecting point of the spiral pipeline through a flexible rope. The spiral pipeline is driven to axially stretch and contract along the base column through the plurality of pulleys so as to adjust the average pitch of the spiral pipeline. The application solves the problems of poor adaptability and high energy consumption of the traditional device.

Description

Technical Field

[0001] This invention relates to the field of dust suppression device technology, specifically a distributed trolley variable pitch dynamic magnetization device. Background Technology

[0002] Dust pollution is a long-standing problem in production environments such as coal mines. Spraying water is currently a widely used method for dust suppression. However, ordinary water bodies have limited ability to wet, adhere to, and capture fine dust (especially hydrophobic coal dust and cement dust) due to their high surface tension, resulting in low dust suppression efficiency and increased water consumption.

[0003] To address this issue, magnetized water technology has been introduced into the field of dust suppression spraying. Research shows that when water flows through a magnetic field of a specific intensity, its physicochemical properties, such as the structure of water molecule clusters, surface tension, viscosity, and solubility, change. Magnetized water exhibits reduced surface tension and enhanced wettability, enabling it to more effectively wet and adsorb fine dust particles, thus improving the efficiency of dust suppression spraying and conserving water resources.

[0004] Currently, water magnetization treatment mainly relies on various magnetization devices. However, existing magnetization devices primarily employ a combination of a fixed magnetic field strength and a fixed-pitch spiral pipe. These devices typically use permanent magnet arrays to generate a constant magnetic field, and the pitch of the spiral pipe cannot be adjusted once it is formed, thus making it impossible to adjust according to the real-time physicochemical parameters of the solution to be treated. Furthermore, the prevalence of single-spiral pipe designs necessitates the deployment of multiple sets of equipment when different water quality solutions need to be treated in parallel, increasing the floor space required and resulting in low space and cost efficiency. Summary of the Invention

[0005] To address the technical problems existing in the prior art, this invention provides a distributed trolley variable pitch dynamic magnetization device that can dynamically adjust the magnetic field strength and the flow channel pitch to achieve low-energy magnetization of solutions for multi-channel parallel processing.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention discloses a distributed trolley variable pitch dynamic magnetization device, comprising: The piping assembly comprises multiple spiral pipes arranged side by side; each spiral pipe is a flexible hose wound around a corresponding horizontally placed base column; The flow distribution module is used to distribute the solution into different spiral channels according to the solution's physicochemical parameters; The magnetization module includes a main electro-permanent magnet and an auxiliary electro-permanent magnet; the main electro-permanent magnet and the auxiliary electro-permanent magnet are respectively arranged on opposite sides of the pipe assembly, and a composite magnetic field is achieved by dynamically adjusting the strength of the main magnetic field and the strength of the auxiliary magnetic field; The variable pitch modules correspond in number to the helical pipes. Each set of variable pitch modules includes a track, trolleys, and a flexible rope. The track extends parallel to the axial direction of the base column of the corresponding helical pipe. Several trolleys are slidably installed on the track, and each trolley is connected to the corresponding connection point on the helical pipe through a flexible rope. The helical pipe is driven to extend and retract along the axial direction of the base column by multiple trolleys to adjust the average pitch of the helical pipe.

[0007] As a further improvement to the above solution, the flow channel distribution module includes a number of fluid control valves corresponding to the spiral pipes; each fluid control valve is installed at the inlet of the corresponding spiral pipe, and a water quality sensor is provided at the inlet of the fluid control valve. The water quality sensor is used to collect the physicochemical parameters of the solution, including water turbidity and water hardness.

[0008] As a further improvement to the above scheme, the main electro-permanent magnet and the auxiliary electro-permanent magnet are located in the same vertical plane and are symmetrically distributed above and below multiple sets of spiral pipes; the main electro-permanent magnet and the auxiliary electro-permanent magnet are multiple electro-permanent magnets arranged in a straight line in the horizontal direction and spaced apart, with the arrangement direction parallel to each spiral pipe, and the projection range of the main electro-permanent magnet and the auxiliary electro-permanent magnet in the horizontal plane exactly covers the base column.

[0009] As a further improvement to the above scheme, each set of variable pitch modules has two tracks, which are located on the same horizontal plane and symmetrically distributed on opposite sides of the corresponding spiral pipe. All trolleys are staggered on the two tracks, and the trolleys are driven by brushless motors.

[0010] As a further improvement to the above solution, the magnetization device further includes: The number of pipe collection modules corresponds to the number of spiral pipes; each set of pipe collection modules includes a drive motor, a gear set, and a roller; the drive motor drives the roller to rotate and / or translate around its own axis through the gear set, and the roller is used to wind up or release the corresponding spiral pipe by rotating.

[0011] As a further improvement to the above solution, the pipe collection module is located at one end of the track, the axis of the roller is perpendicular to the axis of the base column, and the roller is configured to synchronize the extension and retraction of the spiral pipe with the extension and retraction of the variable pitch module.

[0012] As a further improvement to the above solution, the magnetization device further includes: The closed-loop control module includes a controller, a photoelectric sensor, and a speed sensor. The controller is used for closed-loop control of the combined motion of the variable pitch module and the pipeline collection module. The photoelectric sensor and the speed sensor are respectively installed on the track. The photoelectric sensor is used to detect whether the trolley passes through the point, and the speed sensor is used to collect the speed of the trolley.

[0013] As a further improvement to the above solution, the controller is a programmable controller and is installed in the control cabinet; the photoelectric sensor, speed sensor and brushless motor driving the trolley are all electrically connected to the controller.

[0014] As a further improvement to the above scheme, a hollow tube is coaxially sleeved on the outer layer of the base column, and a radial gap is formed between the base column and the hollow tube, and the spiral pipe is accommodated within the radial gap.

[0015] As a further improvement to the above solution, one end of the flexible rope is connected to the pulley, and the other end is connected to the connection point of the spiral pipe; multiple connection points are provided on the spiral pipe, dividing the spiral pipe into several segments.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The distributed trolley-based variable pitch dynamic magnetization device disclosed in this invention can simultaneously magnetize multiple solutions, improving the overall magnetization efficiency. By flexibly adjusting the pitch of the spiral pipe through the distributed trolley, and flexibly adjusting the magnetic field strength through the composite magnetic field formed by the main electro-permanent magnet and the auxiliary electro-permanent magnet, this invention only requires one set of electro-permanent magnet devices compared to a single fixed magnetization method. Therefore, it has the advantages of low cost, high flexibility, and small space occupation, solving the problems of poor adaptability and high energy consumption of traditional devices, and making it possible to explore the influence of different magnetic fields and spiral pipes with different pitches on the magnetization effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the distributed trolley variable pitch dynamic magnetization device in an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the magnetization module and the pipeline assembly in an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the pipeline collection module and the corresponding spiral track and variable pitch module in an embodiment of the present invention.

[0020] Figure 4 for Figure 3 A schematic diagram of the structure of the helical track and the corresponding variable pitch module.

[0021] Figure 5 This is a schematic diagram of the closed-loop control module in an embodiment of the present invention.

[0022] Figure 6 This is a flowchart of the dynamic magnetization method based on distributed pulley variable pitch in an embodiment of the present invention.

[0023] In the diagram: 1. Pipe assembly; 11. Spiral pipe; 12. Base column; 2. Flow distribution module; 21. Fluid control valve; 22. Water quality sensor; 3. Magnetization module; 31. Main electro-permanent magnet; 32. Auxiliary electro-permanent magnet; 4. Variable pitch module; 41. Track; 42. Trolley; 43. Flexible rope; 5. Closed-loop control module; 51. Controller; 52. Control cabinet; 53. Photoelectric sensor; 54. Speed ​​sensor; 6. Pipe collection module; 61. Drive motor; 62. Gear set; 63. Roller. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 5 This embodiment provides a distributed trolley variable pitch dynamic magnetization device, including: a pipe assembly 1, a flow channel distribution module 2, a magnetization module 3, a variable pitch module 4, a closed-loop control module 5, and a pipe collection module 6.

[0026] The pipe assembly 1 includes multiple spiral pipes 11 arranged side by side; each spiral pipe 11 is a flexible tube wound around a corresponding horizontally placed base column 12. Through the action of the variable pitch module 4, the spiral pipes 11 can undergo spring-like compression or tension along the axial direction of the base column 12, thereby adjusting the average axial distance of the spiral pipes 11. In some embodiments, a hollow tube can be coaxially sleeved on the outer layer of the base column 12, with a radial gap between the base column 12 and the hollow tube, forming a sandwich space to accommodate the spiral pipes 11, thus protecting the spiral pipes 11. It should be noted that the spiral pipes 11 do not need to contact the inner wall of the hollow tube.

[0027] The flow distribution module 2 is used to distribute the solution to different spiral pipes 11 according to the solution's physicochemical parameters. The flow distribution module 2 includes a number of fluid control valves 21 corresponding to the spiral pipes 11. Each fluid control valve 21 is installed at the inlet of the corresponding spiral pipe 11, and a water quality sensor 22 is provided at the inlet of the fluid control valve 21. The water quality sensor 22 is used to collect the solution's physicochemical parameters, including water turbidity and water hardness. In some embodiments, the fluid control valves 21 can be arranged in an array. By designing a specific pipeline connection method, different solutions can be combined and collected to modulate solutions with specific physicochemical properties and send them into the spiral pipes 11.

[0028] The magnetization module 3 includes a main electro-permanent magnet 31 and an auxiliary electro-permanent magnet 32. The main electro-permanent magnet 31 and the auxiliary electro-permanent magnet 32 ​​are respectively arranged on opposite sides of the pipe assembly 1, and a composite magnetic field is achieved by dynamically adjusting the strength of the main magnetic field and the strength of the auxiliary magnetic field.

[0029] In this embodiment, the main electro-permanent magnet 31 and the auxiliary electro-permanent magnet 32 ​​are located in the same vertical plane and are symmetrically distributed above and below multiple sets of spiral pipes 11. Both the main electro-permanent magnet 31 and the auxiliary electro-permanent magnet 32 ​​are multiple electro-permanent magnets arranged laterally and spaced apart. The magnetic field strength and magnetization time of the pipes in the pipe assembly 1 are adjusted by the combined magnetic field of the main electro-permanent magnet 31 and the auxiliary electro-permanent magnet 32.

[0030] The number of variable pitch modules 4 corresponds to the number of spiral pipes 11; each set of variable pitch modules 4 includes a track 41, a trolley 42 and a flexible rope 43; the extension direction of the track 41 is parallel to the axial direction of the base column 12 of the corresponding spiral pipe 11, and several trolleys 42 are slidably installed on the track 41, and each trolley 42 is connected to the corresponding connection point on the spiral pipe 11 through a flexible rope 43. The spiral pipe 11 is driven to extend and retract along the axial direction of the base column 12 by multiple trolleys 42 to adjust the average pitch of the spiral pipe 11.

[0031] It should be noted that different solutions require different residence times in the magnetic field, resulting in varying magnetization effects. The magnetization effect can be optimized by adjusting the screw pitch to achieve different residence times. However, longer residence time does not necessarily equate to better magnetization; sometimes the effect increases initially and then decreases, or fluctuates repeatedly. Therefore, before using the magnetization device of this invention, the screw pitch setting can be flexibly adjusted based on actual needs and experimental feedback to ensure the optimal residence time of the solution in the magnetic field (optimal energy consumption and magnetization efficiency).

[0032] Each variable pitch module 4 has two tracks 41, which are located on the same horizontal plane and symmetrically distributed on the front and rear sides of the corresponding spiral pipe 11. All trolleys 42 are staggered on the two tracks 41.

[0033] The closed-loop control module 5 includes a controller 51, a control cabinet 52, a photoelectric sensor 53, and a speed sensor 54. The controller 51 is installed in the control cabinet 52. The photoelectric sensor 53 and the speed sensor 54 are respectively installed on the track 41. The photoelectric sensor 53 is used to detect whether the trolley 42 has passed the point, thereby providing the controller 51 with discrete position signals of the trolley 42. The speed sensor 54 is used to collect the speed of the trolley 42 as a reference signal source for master-slave synchronous control (trolley 42 is the master, and roller 63 is the slave), preventing mechanical failures in complex dynamic expansion and contraction of the equipment. The photoelectric sensor 53, the speed sensor 54, and the brushless motor of the trolley 42 (not shown in the figure) are all electrically connected to the controller 51 through wires. Other electrical components can also be electrically connected to the controller 51. The controller 51 is a programmable logic controller that can control the combined movement of the variable pitch module 4 and the pipe collection module 6.

[0034] The number of pipe collection modules 6 corresponds to the number of spiral pipes 11; each set of pipe collection modules 6 includes a drive motor 61, a gear set 62 and a roller 63; the drive motor 61 drives the roller 63 located next to the base column 12 to rotate and / or translate around its own axis through the gear set 62, and the roller 63 is used to wind up or release the corresponding spiral pipe 11 by rotating.

[0035] Please see Figure 6 This embodiment also provides a distributed trolley variable pitch dynamic magnetization method, which is applied to the distributed trolley variable pitch dynamic magnetization device as described above; the method includes the following steps, namely S1~S4.

[0036] S1. According to the preset pitch setting scheme, control the variable pitch module 4 to adjust the average pitch of the spiral pipe 11, and simultaneously control the roller 63 to synchronously wind or release the spiral pipe 11.

[0037] The average pitch is the sum of the pitches of all segments divided by the number of segments in the spiral pipe, and is defined as follows:

[0038] In the formula, The average pitch; Let X be the pitch of the j-th segment, and let X be the number of segments of the spiral pipe 11 (the number of connection points of the spiral pipe 11).

[0039] In step S1, it is assumed that m trolleys 42 are involved in adjusting the pitch of each set of spiral pipes 11, of which x trolleys 42 move from rest, first accelerating and then decelerating, to dynamically adjust the pitch. The maximum speed of these x trolleys 42 is the same. All have the same acceleration 'a', and the remaining mx trolleys 42 are temporarily stationary. Note: The width of the trolleys is not considered in the calculation.

[0040]

[0041]

[0042] Then the average pitch The formula for expressing it is:

[0043] In the formula, s is the lead of the spiral pipe 11; L2 is the length of the auxiliary electro-permanent magnet, and s≤L2.

[0044] In addition, the derivation and calculation formula of the acceleration 'a' of the pulley 42 are as follows:

[0045]

[0046]

[0047]

[0048] Then we have:

[0049] In the formula, The total net force on the trolley; T is the output torque of the brushless motor for each trolley 42; is the traction force output by the brushless motor; r is the transmission radius between the trolley 42 and the traction system, which is a parameter of the brushless motor; Let x be the total sliding friction force experienced by the x trolleys 42 as they move on the track 41; For the mass of a single pulley 42; The coefficient of sliding friction between the trolley 42 and the track 41; This is the acceleration due to gravity.

[0050] The relationship between the rotational speed of drum 63 and the average pitch of spiral pipe 11 is as follows:

[0051] In the formula, The drum rotates at a speed of 63. The linear velocity of the spiral pipe 11 wound around the drum 63; This is an efficiency correction factor; Target magnetization efficiency; This represents the current magnetization efficiency.

[0052] Maximum speed of the sled 42 The linear velocity of the spiral pipe 11 wound with the roller 63 The relation and derivation process are as follows: Assuming leftward is the positive direction, the spiral pipe 11 can be equivalent to a single thread with an average pitch. 11. A single-turn helical pipe. For a cylindrical helix, the helix unfolds into a straight line along the cylindrical surface. For each pitch, the unfolded straight line constitutes a... , It is a triangle with right angles and D is the diameter of the cylinder (i.e., the projected diameter). Given the average pitch, the length of a single turn of the helix is:

[0053] Furthermore, because:

[0054]

[0055] Then we have:

[0056] In the formula, The average pitch of the spiral is the length of one turn, L is the total length of the spiral tube 11; t is the time it takes for the roller 63 to wind the spiral tube 11 (the same as the movement time of the trolley 42), where ; The diameter of the cylindrical helix of the spiral pipe 11 itself.

[0057] Assume (mx) pulleys are located outside (at one end) of the permanent magnet, and x pulleys are within the magnetic field. When the helix unfolds along the cylindrical surface, it forms a right triangle. The base is the circumference of the cylinder (π·D, where D is the diameter of the cylinder, and...). ), height is the pitch ( The hypotenuse is the length of a single turn of the spiral ( Then we have:

[0058] in, And because:

[0059] Then we have:

[0060] That is, if and only if At that time, the remaining mx pulleys 42 must be engaged in movement, otherwise they will pull on the spiral pipe 11.

[0061] S2. Adjust the composite magnetic field of magnetization module 3 to the preset magnetic field strength.

[0062] In step S2, the linear control of the main magnetic field strength is achieved by adjusting the current of the main electro-permanent magnet 31, expressed by the following formula:

[0063] In the formula, The main magnetic field strength; For current; The magnetic field coefficient, i.e., the current. Linear gain with respect to the magnetic field; This is the temperature compensation coefficient; This refers to the temperature change of the main electro-permanent magnet 31.

[0064] The specific derivation process of the above formula is as follows: According to Ampere's law, the relationship between the magnetic field strength H and the current I in a closed magnetic circuit is as follows:

[0065] Where N is the number of turns in the coil. This represents the length of the magnetic circuit.

[0066] Furthermore, the relationship between magnetic induction intensity B and H is as follows:

[0067] in Relative permeability This refers to the inherent magnetization of the permanent magnet. is the vacuum permeability.

[0068] Therefore, for the main electro-permanent magnet 31, the magnetic field strength M can be approximated as a linear function of the current I:

[0069] Furthermore, assuming the magnetization efficiency of the main electro-permanent magnet 31 is... The theoretical magnetic field strength of the main electro-permanent magnet 31 is... The relationship with current can be expressed as:

[0070] in The magnetic field coefficient is determined by the number of coil turns, magnetic circuit geometry parameters, and material permeability, and needs to be calibrated experimentally.

[0071] Furthermore, the relative magnetic permeability of a material decreases with increasing temperature. and the inherent magnetization of permanent magnets A temperature compensation term needs to be introduced. And temperature changes The resulting magnetic field attenuation can be modeled as a linear relationship:

[0072] Where β is the temperature compensation coefficient.

[0073] In summary, the effective magnetic field strength M of the main electro-permanent magnet 31 is:

[0074] The auxiliary magnetic field strength of the auxiliary electro-permanent magnet 32 ​​is adaptively adjusted based on the physicochemical parameters of the solution within the spiral pipe 11. The mapping relationship is expressed as follows:

[0075] In the formula, To enhance the auxiliary magnetic field strength; Indicates water turbidity, unit: NTU ; Indicates water hardness, unit: mg / L .

[0076] S3. Collect the physicochemical parameters of the solution, and according to the preset diversion mechanism, control the flow channel distribution module 2 to introduce the solution into the suitable spiral pipe 11, so that the solution is magnetized by the composite magnetic field during its movement in the spiral pipe 11.

[0077] S4. Repeat step S3 to magnetize the same batch of solution multiple times, periodically evaluating the magnetization effect until any of the following termination conditions are met: I. Current magnetization efficiency η≥95% (meets output standards); II. Cumulative energy consumption E > 1.0 kWh (to prevent overload); 3. The magnetization efficiency η fluctuation after three consecutive magnetizations is less than 2% (steady-state determination).

[0078] It should be noted that this embodiment can quantify the magnetization efficiency by measuring the surface tension and contact angle of the solution. After each magnetization, a solution sample can be collected and passed through a measuring instrument before entering the magnetization device.

[0079] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dynamic magnetization device based on a distributed pulley with variable pitch, characterized in that, include: The pipe assembly (1) includes multiple spiral pipes (11) arranged side by side; each spiral pipe (11) is a flexible hose and is wound around a corresponding horizontally placed base column (12); The flow distribution module (2) is used to distribute the solution to different spiral pipes (11) according to the solution's physicochemical parameters. The magnetization module (3) includes a main electro-permanent magnet (31) and an auxiliary electro-permanent magnet (32); the main electro-permanent magnet (31) and the auxiliary electro-permanent magnet (32) are respectively arranged on opposite sides of the pipe assembly (1), and a composite magnetic field is achieved by dynamically adjusting the strength of the main magnetic field and the strength of the auxiliary magnetic field; The number of variable pitch modules (4) corresponds to the number of spiral pipes (11); each set of variable pitch modules (4) includes a track (41), a trolley (42) and a flexible rope (43); the extension direction of the track (41) is parallel to the axial direction of the base column (12) of the corresponding spiral pipe (11), and several trolleys (42) are slidably installed on the track (41), and each trolley (42) is connected to the corresponding connection point on the spiral pipe (11) through a flexible rope (43). The spiral pipe (11) is driven to extend and retract along the axial direction of the base column (12) by multiple trolleys (42) to adjust the average pitch of the spiral pipe (11).

2. The dynamic magnetization device based on distributed trolley variable pitch according to claim 1, characterized in that, The flow channel distribution module (2) includes a number of fluid control valves (21) corresponding to the spiral pipe (11); each fluid control valve (21) is installed at the inlet of the corresponding spiral pipe (11), and a water quality sensor (22) is provided at the inlet of the fluid control valve (21). The water quality sensor (22) is used to collect the physicochemical parameters of the solution, including water turbidity and water hardness.

3. The dynamic magnetization device based on distributed trolley variable pitch according to claim 1, characterized in that, The main electro-permanent magnet (31) and the auxiliary electro-permanent magnet (32) are located in the same vertical plane and are symmetrically distributed above and below multiple sets of spiral pipes (11). The main electro-permanent magnet (31) and the auxiliary electro-permanent magnet (32) are multiple electro-permanent magnets arranged in a straight line in the horizontal direction and spaced apart. The arrangement direction is parallel to each spiral pipe (11), and the projection range of the main electro-permanent magnet (31) and the auxiliary electro-permanent magnet (32) on the horizontal plane just covers the base column (12).

4. The dynamic magnetization device based on distributed trolley variable pitch according to claim 3, characterized in that, Each variable pitch module (4) has two tracks (41) which are located on the same horizontal plane and symmetrically distributed on opposite sides of the corresponding spiral pipe (11). All trolleys (42) are staggered on the two tracks (41) and the trolleys (42) are driven by a brushless motor.

5. The dynamic magnetization device based on distributed trolley variable pitch according to claim 1, characterized in that, Also includes: The number of pipe collection modules (6) corresponds to the number of spiral pipes (11); each set of pipe collection modules (6) includes a drive motor (61), a gear set (62) and a roller (63); the drive motor (61) drives the roller (63) to rotate and / or translate around its own axis through the gear set (62), and the roller (63) is used to wind up or release the corresponding spiral pipe (11) by rotating.

6. The dynamic magnetization device based on distributed trolley variable pitch according to claim 5, characterized in that, The pipe collection module (6) is located at one end of the track (41). The axis of the roller (63) is perpendicular to the axis of the base column (12), and the roller (63) is configured to coordinate with the extension and retraction of the variable pitch module (4) to simultaneously retract and extend the spiral pipe (11).

7. The dynamic magnetization device based on distributed trolley variable pitch according to claim 1, characterized in that, Also includes: The closed-loop control module (5) includes a controller (51), a photoelectric sensor (53), and a speed sensor (54). The controller (51) is used for closed-loop control of the combined motion of the variable pitch module (4) and the pipeline collection module (6). The photoelectric sensor (53) and the speed sensor (54) are respectively installed on the track (41). The photoelectric sensor (53) is used to detect whether the trolley (42) passes through the point, and the speed sensor (54) is used to collect the speed of the trolley (42).

8. The dynamic magnetization device based on distributed trolley variable pitch according to claim 1, characterized in that, The controller (51) is a programmable controller and is installed in the control cabinet (52); the photoelectric sensor (53), the speed sensor (54) and the brushless motor of the drive trolley (42) are all electrically connected to the controller (51).

9. A dynamic magnetization device based on a distributed trolley with variable pitch according to claim 1, characterized in that, A hollow tube is coaxially sleeved on the outer layer of the base column (12), and a radial gap is formed between the base column (12) and the hollow tube. The spiral pipe (11) is accommodated in the radial gap.

10. A dynamic magnetization device based on a distributed trolley variable pitch according to claim 1, characterized in that, One end of the flexible rope (43) is connected to the pulley (42), and the other end is connected to the connection point of the spiral pipe (11); there are multiple connection points on the spiral pipe (11), which divide the spiral pipe (11) into several segments.

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