A wind-driven dust removal device based on a friction nanogenerator
The wind-powered dust removal device driven by the triboelectric nanogenerator solves the problems of high-voltage power supply safety risks and unstable power supply in underground dust control, achieving safe and efficient dust removal, and reducing maintenance difficulty and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CENT SOUTH UNIV
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-02
AI Technical Summary
Existing underground dust control equipment has problems such as safety risks of high-voltage power supply systems, interruption of dust removal efficiency due to unstable power supply, and difficulties in maintenance due to moisture corrosion and narrow spaces. In particular, there is a risk of electric spark ignition in gas-rich areas, and the equipment cost is high.
The wind-powered dust removal device, driven by a triboelectric nanogenerator, converts wind energy into rotational mechanical energy through a wind-powered drive unit. It generates alternating current using an R-TENG module and converts it into direct current through a rectifier module. Combined with an electrostatic dust removal unit, it removes dust. The electrostatic dust removal unit uses flame-retardant materials and a labyrinthine waterproof structure, and integrates an automatic ash removal device. It dynamically adjusts the wind speed to ensure stable power generation.
It achieves safe and efficient dust removal in the underground environment, reduces the frequency and cost of equipment maintenance, avoids the risk of electrical sparks, adapts to changes in wind speed, and improves the durability and dust removal efficiency of the equipment.
Smart Images
Figure CN224308615U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of underground dust control technology, specifically a wind-driven dust removal device based on a triboelectric nanogenerator. Background Technology
[0002] In the field of underground dust control, conventional technologies are mainly divided into two categories of dust removal devices: dry and wet. Dry dust collectors generally suffer from large equipment size and poor mobility, making them difficult to adapt to the narrow and variable working environment underground. While wet dust collectors can effectively reduce dust, they rely on large amounts of water resources, and the noise pollution generated by electric components exacerbates the deterioration of the underground working environment. More importantly, in areas rich in gas, there is a risk of electrical spark ignition, threatening the inherent safety of the mine.
[0003] For the control of PM2.5 nano-sized fine dust, existing equipment mostly employs multi-layer filtration or high-voltage electrostatic capture technology. These solutions not only result in complex system structures and high maintenance costs, but also struggle to dynamically respond to real-time changes in dust concentration and particle size underground. Furthermore, the high humidity environment in the tunnel accelerates filter media corrosion and failure, while the confined space makes frequent filter replacement extremely difficult. It is worth noting that electrostatic precipitators require an external high-voltage power supply system, posing a risk of gas explosion due to electrical sparks and potentially generating harmful byproducts such as ozone. Existing explosion-proof improvements further increase equipment costs.
[0004] The aforementioned technical deficiencies manifest themselves in three core issues:
[0005] 1. High-voltage power supply systems pose significant safety risks in flammable and explosive environments; 2. Traditional air purification devices suffer from interrupted dust removal efficiency due to unstable power supply; 3. The intrusion of damp and corrosive media and the difficulty of maintenance in confined spaces significantly reduce equipment durability. These pain points severely restrict the overall effectiveness of underground dust control. Utility Model Content
[0006] The purpose of this invention is to provide a wind-driven dust removal device based on a triboelectric nanogenerator that offers high safety and environmental adaptability while requiring low maintenance.
[0007] This invention provides a wind-driven dust removal device based on a triboelectric nanogenerator, comprising a wind-driven unit, an R-TENG module, a rectifier module, and an electrostatic dust removal unit. The wind-driven unit converts wind energy into rotational mechanical energy. The R-TENG module includes a rotor assembly and a stator assembly. The rotor assembly is driven to rotate by the wind-driven unit and generates alternating current through periodic friction with the stator assembly. The input end of the rectifier module is connected to the output electrode of the R-TENG module to convert the alternating current into direct current. The electrostatic dust removal unit includes a chamber with an air inlet and an air outlet, and a pair of parallel electrodes disposed within the chamber. The parallel electrodes are connected to the output end of the rectifier module to form an electrostatic field for adsorbing particulate matter in the air entering the chamber.
[0008] In one embodiment of the above-mentioned device, the chamber of the electrostatic dust removal unit is made of flame-retardant material, its air inlet is provided with a labyrinth waterproof structure, and an automatic dust removal device is integrated at the bottom; the parallel electrode is a copper mesh electrode with a grid structure on its surface.
[0009] In one embodiment of the above-mentioned device, the rotor assembly of the R-TENG module includes a substrate and a plurality of fan-shaped conductive units embedded on the substrate. The fan-shaped conductive units are arranged radially in a dense manner, and the surface is plated with a wear-resistant metal layer. The edge of the substrate is provided with an annular reinforcement structure.
[0010] In one embodiment of the above-described device, the stator assembly includes two sets of complementary patterned electrode networks separated by channels, and the upper surface is covered with a Kapton film.
[0011] In one embodiment of the above device, the wind-driven unit includes at least one wind cup fixed to the top of the rotating spindle; a magnetorheological damping adjustment mechanism integrated on the rotating spindle for dynamically adjusting the resistance in response to changes in wind speed; the rotating spindle is made of carbon fiber and its end is connected to the rotor assembly of the R-TENG module.
[0012] In one embodiment of the above device, the rectifier module is a bridge rectifier, whose input end is connected to the output electrode of the R-TENG module via a wire, and whose output end is connected to the parallel electrode of the electrostatic dust removal unit via a wire; the wire connection point is covered with a conductive protective layer.
[0013] In one embodiment of the above-described device, the fan-shaped conductive unit of the rotor assembly and the patterned electrode network of the stator assembly generate alternating current through a contact-separation cycle when they slide relative to each other.
[0014] The beneficial effects of this utility model are as follows:
[0015] 1. The device adopts a sliding friction design with 180° densely arranged fan-shaped copper grid electrodes (rotor) and complementary lower grid electrodes (stator), combined with surface nickel plating process; it significantly improves the friction contact area and charge transfer efficiency, realizes high power output under low wind speed conditions in the well, and solves the safety hazards of traditional electrostatic dust removal devices relying on external high voltage power supply.
[0016] 2. The magnetorheological damping adjustment mechanism is integrated into the rotating main shaft, linking the wind cup and the R-TENG rotor assembly; it dynamically suppresses mechanical overload caused by wind speed fluctuations, ensures stable power generation of R-TENG, and provides a continuous electrostatic field for the copper mesh electrode, overcoming the dust removal interruption problem caused by unstable power supply in existing technologies.
[0017] 3. The coordinated design of flame-retardant PC shell, labyrinthine waterproof air inlet and automatic ash discharge device at the bottom of the chamber; prevents the intrusion of damp and corrosive media in the well, reduces the frequency of filter material replacement; combined with timed ash discharge function, it significantly reduces the intensity of manual maintenance in narrow roadways and improves equipment durability. Attached Figure Description
[0018] Figure 1 This is a schematic diagram showing the overall structure of one embodiment of the present invention.
[0019] Figure 2 for Figure 1 A schematic diagram of the structure of a square chamber.
[0020] Figure 3 for Figure 2 A schematic diagram of the structure of the copper mesh electrode.
[0021] Figure 4 for Figure 1 A schematic diagram of the R-TENG module.
[0022] Figure 5 for Figure 4 A schematic diagram of the upper and middle grid electrodes.
[0023] Figure 6 for Figure 1 A schematic diagram of the structure of the wind-driven unit. Attached image description:
[0025] 1. Copper mesh electrode; 2. Automatic dust removal device; 3. Labyrinth waterproof structure; 4. Lower grid electrode; 5. Upper grid electrode; 6. Copper mesh details; 7. Silicone protective layer; 8. Copper wire; 9. Wind cup; 10. Magnetorheological damping adjustment mechanism; 11. Rotating spindle; 12. Copper fan-shaped unit; 13. Nickel layer; 14. PMMA; 15. Fiberglass reinforcement; 16. Bridge rectifier. Detailed Implementation
[0026] The relevant technical solutions will now be clearly and completely described with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.
[0027] like Figure 1 As shown, the wind-driven dust removal device based on triboelectric nanogenerator disclosed in this embodiment includes a cubic chamber, an R-TENG module, a wind-driven unit, and a bridge rectifier.
[0028] like Figure 2 As shown, the outer shell of the cubic chamber is made of flame-retardant PC material, with an air inlet on one side. The air inlet connects to external ventilation equipment, and the air outlet connects to a clean air duct.
[0029] The air inlet has a built-in labyrinth waterproof structure 3 to prevent external sewage from entering and to adapt to humid environments.
[0030] The bottom of the cubic chamber is integrated with an automatic ash removal device 2, which supports timed cleaning of deposited particles and reduces the frequency of manual maintenance.
[0031] like Figure 3 As shown, two parallel copper mesh electrodes 1 are placed inside the chamber, with a fine mesh structure 6 etched on their surfaces. The copper mesh electrodes are connected to the output terminal of the R-TENG module via copper wires 8, and the connection points of the copper wires are covered with a conductive silicone protective layer 7. When a direct current is applied to the copper mesh electrodes, an electrostatic field is generated, which charges the particulate matter in the air entering the chamber and adsorbs it onto the electrode surface, thus achieving dust removal.
[0032] like Figure 4 As shown, the R-TENG module includes a rotor assembly and a stator assembly.
[0033] like Figure 5 As shown, the rotor assembly is a rotatable upper grid electrode array 5, composed of 180 copper sector units 12, each with a central angle of 1°, arranged radially in a dense manner. The sector units are embedded in a PMMA substrate 14, and the surface is chemically plated with a 5μm nickel layer 13 to improve wear resistance. A ring-shaped glass fiber reinforcing rib 15 is provided around the substrate to enhance structural rigidity.
[0034] The stator assembly is a fixed lower grid electrode array 4, which consists of two sets of complementary copper patterned electrode networks. The lower surface is plated with a 5μm nickel layer, and the electrodes are separated by fine channels. The upper surface is covered with a Kapton film.
[0035] The rotor assembly can rotate under wind power, generating static electricity through friction with the stator assembly. When the rotor and stator slide relative to each other, an alternating current is generated through a contact-separation cycle, realizing the conversion of mechanical energy into electrical energy.
[0036] like Figure 6 As shown, the wind-driven unit includes a wind cup 9, a magnetorheological damping adjustment mechanism 10, and a rotating main shaft 11.
[0037] Three symmetrically distributed hemispherical wind cups 9 are directly fixed to the top of the carbon fiber rotating main shaft 11, and the end of the rotating main shaft 11 is connected to the R-TENG rotor assembly to drive its rotation.
[0038] The rotating main shaft 11 integrates a magnetorheological damping adjustment mechanism 10, which can dynamically adjust the resistance according to the wind speed.
[0039] The wind cup converts wind energy into rotational kinetic energy; the magnetorheological damping mechanism prevents structural overload under high-speed wind conditions, ensuring power generation stability.
[0040] The input terminal of the bridge rectifier 16 is connected to the output electrode of the R-TENG module via copper wire 8; the output terminal is connected to the copper mesh electrode 1 inside the cubic cavity via copper wire 8. The connection point is covered with a conductive silicone protective layer 7 to prevent oxidation and poor contact. The bridge rectifier can convert the alternating current generated by the R-TENG into direct current, providing a continuous and stable electrostatic field power supply for the copper mesh electrode.
[0041] The working process of this device is as follows:
[0042] 1. The ambient wind drives the hemispherical wind cup to rotate, and the mechanical energy is transferred to the rotor assembly of the R-TENG module through the rotating main shaft; the magnetorheological damping adjustment mechanism monitors the wind speed in real time and dynamically adjusts the main shaft resistance to avoid structural overload under high wind conditions;
[0043] 2. The 180 copper sector units of the rotor assembly circulate across the stator assembly during rotation. The rotor and stator undergo a cyclical friction of contact-sliding-separation-contact, generating alternating current through triboelectric effect. The nickel layer on the surface of the rotor sector units and the Kapton film on the stator synergistically improve wear resistance and charge transfer efficiency.
[0044] 3. The alternating current generated by the R-TENG module is converted into direct current by a bridge rectifier and then transmitted to the copper mesh electrode in the cubic cavity via copper wires. The copper wire connection points are covered with a conductive silicone protective layer to prevent oxidation and poor contact caused by the humid environment downhole.
[0045] 4. Direct current is applied to two parallel copper mesh electrodes, forming an electrostatic field in the chamber; dust-laden air enters the chamber through the air inlet, and the dust particles become charged in the electrostatic field and are adsorbed onto the surface of the copper mesh electrodes; the fine mesh structure on the surface of the copper mesh enhances the dust capture efficiency, and the purified air is discharged through the air outlet.
[0046] 5. The labyrinthine waterproof structure of the air inlet prevents external sewage from entering and adapts to the humid environment underground; the dust deposited at the bottom of the chamber is removed regularly by an automatic dust removal device, which significantly reduces the frequency of manual maintenance.
[0047] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A wind-driven dust removal device based on a triboelectric nanogenerator, characterized in that: It includes a wind-driven unit, an R-TENG module, a rectifier module, and an electrostatic dust removal unit; The wind-driven unit converts wind energy into rotational mechanical energy; the R-TENG module includes a rotor assembly and a stator assembly, the rotor assembly being driven to rotate by the wind-driven unit and generating alternating current through periodic friction with the stator assembly; the input terminal of the rectifier module is connected to the output electrode of the R-TENG module to convert the alternating current into direct current; the electrostatic dust removal unit includes a chamber with an air inlet and an air outlet, and a pair of parallel electrodes disposed within the chamber; the parallel electrodes are connected to the output terminal of the rectifier module to form an electrostatic field for adsorbing particulate matter in the air entering the chamber.
2. The wind-driven dust removal device based on a triboelectric nanogenerator as described in claim 1, characterized in that: The chamber of the electrostatic dust removal unit is made of flame-retardant material, and its air inlet has a labyrinth waterproof structure. An automatic dust removal device is integrated at the bottom. The parallel electrode is a copper mesh electrode with a grid structure on its surface.
3. The wind-driven dust removal device based on a triboelectric nanogenerator as described in claim 1, characterized in that: The rotor assembly of the R-TENG module includes a substrate and multiple fan-shaped conductive units embedded on the substrate. The fan-shaped conductive units are arranged radially in a dense manner, and the surface is plated with a wear-resistant metal layer. The edge of the substrate is provided with an annular reinforcement structure.
4. The wind-driven dust removal device based on a triboelectric nanogenerator as described in claim 3, characterized in that: The stator assembly includes two sets of complementary patterned electrode networks separated by channels, and the upper surface is covered with a Kapton film.
5. The wind-driven dust removal device based on a triboelectric nanogenerator as described in claim 1, characterized in that: The wind-driven unit includes at least one wind cup fixed to the top of the rotating main shaft; a magnetorheological damping adjustment mechanism integrated on the rotating main shaft for dynamically adjusting the resistance in response to changes in wind speed; the rotating main shaft is made of carbon fiber and its end is connected to the rotor assembly of the R-TENG module.
6. The wind-driven dust removal device based on a triboelectric nanogenerator as described in claim 1, characterized in that: The rectifier module is a bridge rectifier. Its input end is connected to the output electrode of the R-TENG module through a wire, and its output end is connected to the parallel electrode of the electrostatic dust removal unit through a wire. The connection point of the wire is covered with a conductive protective layer.
7. The wind-driven dust removal device based on a triboelectric nanogenerator as described in claim 4, characterized in that: The fan-shaped conductive units of the rotor assembly and the patterned electrode network of the stator assembly generate alternating current through a contact-separation cycle when they slide relative to each other.