Multi-layer electrostatic drying device for anode plate

Abstract

The utility model relates to an anode plate multilayer electrostatic drying device which comprises a drying box, a plurality of drying cavity layers are vertically arranged in the drying box, suspension modules are arranged in the drying cavity layers, and electrostatic shielding plates are arranged between the adjacent drying cavity layers. The suspension module comprises a high-voltage electrode plate and a grounding conductive net which are independently arranged on each drying cavity layer, the high-voltage electrode plates are arranged on the tops of the drying cavity layers, and the grounding conductive nets are arranged at the bottoms of the drying cavity layers. The high-voltage electrode plate and the grounding conductive net are connected with a power supply through a high-voltage cable to form a closed electric field loop to suspend the anode plate; the drying box further comprises a medium supply system, the medium supply system is used for introducing moisture carrying media into the drying cavity layers, the anode plates can be comprehensively exposed and dried in a non-contact mode, and the drying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a multi-layer electrostatic drying device for an anode plate, belonging to the technical field of anode plate drying. Background Art

[0002] The prior art CN219178187U discloses an anode plate drying rotary rack, which can solve the problem in the prior art that when multiple groups of anode plates are placed on the rotary rack, the interval in the middle of the rotary rack is small, the operation is inconvenient, and the anode plates are inconvenient to disassemble and assemble. When the anode plates are dried, multiple groups of anode plates need to be placed in a rotary furnace for drying. The rotary rack is a movable structure and is prone to movement in the rotary furnace, affecting rotation and easily causing damage to the anode plates. Although the bracket structure is foldable for easy disassembly and assembly, the limit column and ball bearing design are easy to scratch the surface of the anode plate, the supporting frame blocks the airflow to form a drying dead corner, and the displacement risk increases the equipment failure rate. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the utility model provides a multi-layer electrostatic drying device for anode plates, which can fully expose and dry the anode plates in a non-contact manner and accelerate the drying efficiency.

[0004] The technical solution of the utility model is as follows:

[0005] A multi-layer electrostatic drying device for anode plates comprises a drying box, wherein a plurality of drying chamber layers are vertically arranged inside the drying box, a suspension module is arranged inside the drying chamber layers, and an electrostatic shielding plate is arranged between adjacent drying chamber layers. The suspension module comprises a high-voltage electrode plate and a grounding conductive mesh independently arranged in each drying chamber layer, wherein the high-voltage electrode plate is arranged at the top of the drying chamber layer, and the grounding conductive mesh is arranged at the bottom of the drying chamber layer. The high-voltage electrode plate and the grounding conductive mesh are connected to a power supply via a high-voltage cable to form a closed electric field loop to suspend the anode plates. The drying box also comprises a medium supply system, which is used to pass a moisture-carrying medium into each drying chamber layer.

[0006] Among them, the drying box is provided with a circulating airflow system between adjacent drying chamber layers, the circulating airflow system includes airflow micropores provided on the electrostatic shielding plate, and the airflow micropore walls are provided with a Venturi acceleration surface; the circulating airflow system also includes a fan blade group with adjustable inclination angle provided on the inner wall of the drying chamber layer.

[0007] It also includes a board-level monitoring unit, which includes a charge sensor embedded in a grounded conductive grid node and a PID controller based on charge sensor data to dynamically adjust the electric field intensity gradient.

[0008] The medium supply system includes an annular distribution main pipe installed outside the drying box, the output port of the annular distribution main pipe is connected to a plurality of layered branch pipes, and an atomizing nozzle is provided at the end of the layered branch pipe to uniformly spray the wet-carrying medium to each drying chamber layer.

[0009] Among them, it also includes an energy recovery module, which includes an exhaust gas collecting pipe connected to each drying chamber layer, a proportional regulating valve is provided at the exhaust port of the exhaust gas collecting pipe, the proportional regulating valve of the exhaust gas collecting pipe is connected to the primary side inlet of the heat exchanger, and the secondary side inlet of the heat exchanger is connected to the medium preheating tank, and the medium preheating tank is connected to the annular distribution main pipe of the medium supply system through a pump pipe.

[0010] The electrostatic shielding plate includes a fixed layer and a telescopic layer. The fixed layer includes a bottom layer and a sliding layer. The fixed layer is composed of a copper mesh layer and a ceramic insulating layer. The sliding layer is slidably connected to the bottom layer, and one side of the sliding layer is fixedly connected to the telescopic layer. The telescopic layer includes multiple layers of corrugated copper foil, with piezoelectric ceramic actuators embedded between adjacent corrugated copper foils. The piezoelectric ceramic actuators are controlled by a PID controller and are used to drive the corrugated copper foil to produce axial telescopic deformation.

[0011] The utility model has the following beneficial effects:

[0012] The utility model realizes non-contact full exposure drying by embedding electrostatic suspension modules in the multi-layer drying box and cooperating with electric field suspension anode plates, thereby eliminating blind spots and surface scratches.

[0013] The medium supply system sprays ethanol-nitrogen mixed droplets in conjunction with the three-dimensional flow guidance of the circulating airflow system, achieving efficient water absorption and airflow penetration in a low-temperature inert environment, thereby shortening the drying time.

[0014] By dynamically regulating the electric field gradient through the board-level monitoring unit and linking the closed-loop heat energy recycling of the energy recovery module, precise control of the drying state and reduced energy consumption can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of the overall structure of the utility model;

[0016] Figure 2 This is a partial cross-sectional view of the electrostatic shielding plate of the utility model;

[0017] Figure 3 It is a side view of the overall structure of the utility model.

[0018] The reference numerals in the figures are as follows:

[0019] 1. Drying oven; 2. Electrostatic shielding plate; 21. Airflow micropores; 211. Venturi acceleration surface; 22. Fan blade group; 31. High-voltage electrode plate; 32. Grounding conductive grid; 321. Charge sensor; 322. PID controller; 41. Ring distribution main pipe; 42. Layered branch pipe; 43. Atomizing nozzle; 51. Exhaust collecting pipe; 52. Heat exchanger; 53. Medium preheating tank; 24. Telescopic layer; 23. Fixed layer; 231. Bottom layer; 232. Sliding layer. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] See also Figures 1 to 3 , the utility model provides a technical solution:

[0022] The anode plate multi-layer electrostatic drying device of this embodiment includes a drying box 1, wherein a plurality of drying chamber layers are vertically arranged inside the drying box 1, a suspension module is provided inside the drying chamber layer, and an electrostatic shielding plate 2 is provided between adjacent drying chamber layers. The copper mesh blocks electric field interference, and the ceramic insulating layer blocks current. The suspension module includes a high-voltage electrode plate 31 and a grounding conductive mesh 32 independently provided for each drying chamber layer. The high-voltage electrode plate 31 is provided at the top of the drying chamber layer and applies a 3-5kV DC high voltage to ionize the air to form a strong electric field; the grounding conductive mesh 32 is provided at the bottom of the drying chamber layer. The high-voltage electrode plate 31 and the grounding conductive mesh 32 are connected to a power supply via a high-voltage cable to form a closed electric field loop to suspend the anode plate.

[0023] Specifically, the anode plate is electrically neutral before drying and cannot generate electrostatic force on its own. A strong electric field is established between the high-voltage electrode plate 31 and the grounded conductive mesh 32, causing electrostatic induction in the neutral anode plate. When the anode plate enters the electric field, a negative charge is induced near the positive electrode side, while a positive charge is induced near the negative electrode side, forming internal charge polarization. The high-voltage electrode plate 31, or the positive electrode plate, attracts the negatively charged side of the anode plate, generating an attractive force. The grounded conductive mesh 32 attracts the positively charged side of the anode plate, generating an attractive force. The combined force of these two forces is directed vertically upward, counteracting gravity and achieving levitation.

[0024] The anode plate is suspended in the center of the electric field by a suspension module, breaking away from physical contact. Preferably, the direction of the electric field can be at a 30° angle to the direction of gravity. The 30° angle prevents the anode plate from colliding with the cavity wall of the drying chamber layer. Conventional methods of fixing the anode plate will form a drying dead corner at the contact point of the anode plate and easily scratch the surface of the anode plate. However, the suspended anode plate is fully exposed to the airflow environment, which can free the surface moisture from the capillary tension and accelerate evaporation.

[0025] The drying oven 1 also includes a medium supply system for introducing a moisture-carrying medium into each drying chamber layer. The moisture-carrying medium is a highly efficient carrier that utilizes both gas-phase fluidity and liquid-phase phase transition properties. For example, it can be composed of ethanol-nitrogen mixed droplets. The nitrogen acts as an inert gas substrate, enveloping the anode plates to prevent oxidation, while the ethanol penetrates the anode plate surface to rapidly absorb moisture.

[0026] Preferably, a circulating airflow system is provided inside the drying box 1 and is arranged between adjacent drying chamber layers. The circulating airflow system includes airflow micropores 21 provided on the electrostatic shielding plate 2, and the hole wall of the airflow micropore 21 is provided with a Venturi acceleration surface 211; the circulating airflow system also includes a fan blade group 22 with an adjustable inclination angle provided on the inner wall of the drying chamber layer; the bearing of the fan blade group 22 is installed on the motor shaft of the side wall of the drying chamber layer; the inclination angle of the fan blade group 22 is adjusted by a stepper motor; the circulating airflow system realizes efficient circulation of airflow between the drying chamber layers through the coordinated action of the airflow micropores 21 of the electrostatic shielding plate 2 and the fan blade group 22 with adjustable inclination angle. The specific operating mechanism is as follows: when the airflow passes through the airflow micropores 21 of the electrostatic shielding plate 2, the contraction structure of the Venturi acceleration surface 211 accelerates the airflow velocity, compensates for the pressure loss, and ensures the airflow exchange efficiency between the drying chamber layers; the accelerated airflow vertically penetrates to the adjacent drying chamber layer to avoid short-circuit backflow; the inclination angle of the fan blade group 22 is adjusted by a stepper motor, and can switch between two modes: at a larger inclination angle, it is used to push the airflow upward and enhance the upper layer penetration; when adjusted to a small inclination angle, it creates a horizontal vortex and prolongs the contact time of the anode plate surface; this design improves the airflow utilization rate.

[0027] The anode plate multi-layer electrostatic drying device of this embodiment also includes a plate-level monitoring unit, which includes a charge sensor 321 embedded in a node of a grounded conductive grid 32, connected to the input end of a PID controller 322 via a shielded wire, and a PID controller 322 based on the data of the charge sensor 321. The PID controller 322 is installed in a control box on the side wall of the drying box 1, and receives the charge sensor 321 signal through a data line, and outputs a control signal to the electrode plate power supply; so as to dynamically adjust the electric field strength gradient.

[0028] The medium supply system includes an annular distribution main pipe 41 installed outside the drying box 1. The output port of the annular distribution main pipe 41 is connected to a plurality of layered branch pipes 42. The end of the layered branch pipe 42 is provided with an atomizing nozzle 43 to uniformly spray the wet medium to each drying chamber layer.

[0029] It also includes an energy recovery module, which includes an exhaust gas collecting pipe 51 connected to each drying chamber layer. A proportional control valve is provided at the exhaust port of the exhaust gas collecting pipe 51, and the proportional control valve is controlled by a PID controller 322. The proportional control valve of the exhaust gas collecting pipe 51 is connected to the primary side inlet of the heat exchanger 52, and the secondary side inlet of the heat exchanger 52 is connected to the medium preheating tank 53. The medium preheating tank 53 is connected to the annular distribution main pipe 41 of the medium supply system through a pump pipe; the medium preheating tank 53 absorbs the waste heat of the exhaust gas and preheats the wet medium to a certain temperature.

[0030] The operation process of the anode plate multi-layer electrostatic drying device of this embodiment is as follows: first, the anode plates to be processed are placed layer by layer into each drying chamber layer of the drying box 1, and the suspension module is started to apply DC high voltage to the high-voltage electrode plate 31, forming a directional electric field between the top high-voltage electrode plate 31 and the bottom grounded conductive mesh 32. Under the action of the electric field, the anode plates are automatically suspended in the center of the drying chamber layer, breaking away from physical contact and fully exposed to the air flow environment; then the medium supply system is started, and the annular distribution main pipe 41 evenly sprays ethanol-nitrogen mixed droplets to each drying chamber layer through the layered branch pipes 42. The nitrogen forms an inert protective layer to prevent the anode plates from oxidizing, and the ethanol droplets penetrate into the surface of the anode plates and quickly absorb moisture; at the same time, the circulating airflow system starts to work, and the Venturi acceleration surface 211 on the electrostatic shielding plate 2 pushes the airflow to penetrate the electrostatic shielding plate between the drying chamber layers at high speed, and the fan blade group 22 with adjustable inclination angle switches according to the preset mode Operational status: The fan blade group 22 with a large inclination angle pushes the airflow to rise vertically and strengthen interlayer penetration, while the fan blade group 22 with a small inclination angle creates horizontal vortices to extend the contact time between the airflow and the plate surface, forming an efficient three-dimensional circulation; the plate-level monitoring unit captures the changes in the state of the anode plate in real time through the charge sensor 321 embedded in the node of the grounded conductive grid 32, and the PID controller 322 dynamically adjusts the electric field intensity gradient to maintain stable suspension; the exhaust gas generated during the drying process is discharged through the exhaust manifold 51, and the proportional control valve controls a small amount of exhaust gas to enter the heat exchanger 52 to recover waste heat. The preheated energy is transmitted to the medium preheating tank 53 to preheat the fresh wet-carrying medium, realizing closed-loop energy utilization; when the charge sensor 321 detects that the moisture content of the anode plate meets the standard, the system automatically shuts down the suspension electric field and the medium supply. The dried anode plate falls smoothly to the grounded conductive grid 32 as the electric field disappears, and is removed by a mechanical device to complete the entire process.

[0031] As a preferred embodiment, the electrostatic shielding plate 2 includes a fixed layer 23 and a telescopic layer 24, the fixed layer 23 includes a bottom layer 231 and a sliding layer 232, the bottom layer 231 is fixedly installed on the side wall of the drying box 1, the fixed layer 23 is composed of a copper mesh layer and a ceramic insulation layer, the sliding layer 232 is slidably connected to the top of the bottom layer 231, and one side of the sliding layer 232 is fixedly connected to the telescopic layer 24; the telescopic layer 24 includes multiple layers of corrugated copper foil, and piezoelectric ceramic actuators are embedded between adjacent corrugated copper foils; the piezoelectric ceramic actuators are controlled by the PID controller 322 and are used to drive the corrugated copper foil to produce axial telescopic deformation; by driving the corrugated copper foil to produce axial telescopic deformation, the aperture of the airflow micropores 21 set on the corrugated copper foil is continuously adjusted within a certain range, and the preset PID controller is used to adjust the aperture of the airflow micropores 21 set on the corrugated copper foil. 322 control program, so that in the initial drying stage, the aperture of the air flow micropores 21 is expanded to accelerate the penetration of the medium, so that the high-speed air flow flushes the water film on the surface of the anode plate, and in the final drying stage, the aperture of the air flow micropores 21 is reduced to extend the air flow retention time, extend the retention time of ethanol droplets, clear dead corners, and dynamically adapt to the needs of different drying stages; it is worth mentioning that it is not the change in the spacing between the peaks and troughs that directly changes the aperture, but the axial expansion and contraction of the corrugated copper foil that causes the shear displacement of the air flow micropore 21 array, and changes the effective diameter through the hole wall extrusion effect. For example, the corrugated copper foil is subjected to axial pressure, which leads to an increase in the wrinkle inclination angle α, and then the hole wall spacing L of adjacent air flow micropores 21 is reduced, causing the hole wall material to be squeezed toward the center, thereby realizing a change in the diameter; it is worth mentioning that any method of reducing the aperture can also be used to achieve the above purpose.

[0032] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-layer electrostatic drying device for anode plates, characterized by: The invention comprises a drying box (1), wherein a plurality of drying chamber layers are vertically arranged inside the drying box (1), a suspension module is arranged inside the drying chamber layer, and an electrostatic shielding plate (2) is arranged between adjacent drying chamber layers, the suspension module comprises a high-voltage electrode plate (31) and a grounding conductive net (32) independently arranged in each drying chamber layer, the high-voltage electrode plate (31) is arranged at the top of the drying chamber layer, and the grounding conductive net (32) is arranged at the bottom of the drying chamber layer, and the high-voltage electrode plate (31) and the grounding conductive net (32) are connected to a power supply via a high-voltage cable to form a closed electric field loop so that the anode plate is suspended; the drying box (1) also comprises a medium supply system, and the medium supply system is used to pass a moisture-carrying medium into each drying chamber layer.

2. The anode plate multi-layer electrostatic drying device according to claim 1, characterized in that: The drying box (1) is provided with a circulating airflow system between adjacent drying chamber layers. The circulating airflow system comprises airflow micropores (21) provided on the electrostatic shielding plate (2), and the hole walls of the airflow micropores (21) are provided with a Venturi acceleration surface (211). The circulating airflow system also comprises a fan blade group (22) with an adjustable inclination angle provided on the inner wall of the drying chamber layer.

3. The anode plate multi-layer electrostatic drying device according to claim 1, characterized in that: The invention also includes a board-level monitoring unit, which includes a charge sensor (321) embedded in a node of a grounded conductive grid (32), and a PID controller (322) based on data of the charge sensor (321) to dynamically adjust the electric field intensity gradient.

4. The anode plate multi-layer electrostatic drying device according to claim 1, characterized in that: The medium supply system comprises an annular distribution main pipe (41) installed outside the drying box (1), the output port of the annular distribution main pipe (41) is connected to a plurality of layered branch pipes (42), and the ends of the layered branch pipes (42) are provided with atomizing nozzles (43) to uniformly spray the moisture-carrying medium to each drying chamber layer.

5. The anode plate multi-layer electrostatic drying device according to claim 4, characterized in that: The apparatus further comprises an energy recovery module, the energy recovery module comprising an exhaust gas collecting pipe (51) connected to each drying chamber layer, a proportional regulating valve being provided at the exhaust port of the exhaust gas collecting pipe (51), the proportional regulating valve of the exhaust gas collecting pipe (51) being connected to the primary side inlet of the heat exchanger (52), the secondary side inlet of the heat exchanger (52) being connected to the medium preheating tank (53), and the medium preheating tank (53) being connected to the annular distribution main pipe (41) of the medium supply system through a pump pipe.

6. The anode plate multi-layer electrostatic drying device according to claim 5, characterized in that: The electrostatic shielding plate (2) includes a fixed layer (23) and a telescopic layer (24), the air flow micropores (21) are opened on the telescopic layer (24), the fixed layer (23) includes a bottom layer (231) and a sliding layer (232), the fixed layer (23) is composed of a copper mesh layer and a ceramic insulation layer, the sliding layer (232) is slidably connected to the top of the bottom layer (231), and one side of the sliding layer (232) is fixedly connected to the telescopic layer (24); the telescopic layer (24) includes multiple layers of corrugated copper foil, and piezoelectric ceramic actuators are embedded between adjacent corrugated copper foils; the piezoelectric ceramic actuators are controlled by a PID controller (322) and are used to drive the corrugated copper foil to generate axial telescopic deformation.

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