A high-efficiency nozzle multi-energy field coordinated cleaning system

Abstract

The present application belongs to the technical field of industrial cleaning equipment, and relates to a cleaning system with high-efficiency spray head and multi-energy field cooperation. The present application comprises a cleaning machine main body, wherein a vacuum pump, a cleaning tank and a waste liquid tank are arranged on the cleaning machine main body, the vacuum pump and the cleaning tank are connected through a pipeline, the cleaning tank is provided with a cleaning cavity, a cleaning basket is arranged in the cleaning cavity, and a combined high-pressure ultrasonic coupling cleaning mechanism is arranged above the cleaning basket. The combined high-pressure ultrasonic coupling cleaning mechanism is arranged to realize the dual cleaning mechanism of "macro-impact + micro-peeling" through the coupling effect of high-pressure cyclone and ultrasonic cavitation, thereby significantly improving the removal efficiency of various pollutants (particulate impurities, grease and oxides).

Description

Technical Field

[0001] This invention belongs to the field of industrial cleaning equipment technology, and relates to a high-efficiency nozzle multi-energy field coordinated cleaning system. Background Technology

[0002] Traditional industrial cleaning technologies suffer from the following problems: 1. Limitations of a single energy field: Traditional cleaning machines, relying solely on high-pressure water jets, are insufficient for cleaning microscopic pores. The cavitation effect of single ultrasonic cleaning is limited, failing to achieve a multi-field synergistic effect, thus limiting cleaning efficiency. 2. Fixed flow channel design: Traditional nozzles employ straight-through or simple converging flow channels, lacking swirling guidance structures, resulting in laminar or weakly turbulent water flow. Coverage of complex geometric surfaces (such as deep holes and threads) is low. Traditional nozzles can only convert a portion of the water flow energy into effective shear force, with the remaining energy lost through turbulent dissipation. Lack of high-frequency shearing mechanisms: Traditional nozzles rely on single high-pressure impact, and the shear rate cannot effectively decompose stubborn stains (such as oxide layers and polymer residues) with chemical bonds. 3. Poor adaptability: Insufficient adaptability to different types of contaminants. For example, oxide layer removal relies on single high-pressure impact; grease decomposition requires chemical solvents due to the lack of swirling shearing or thermal assistance; particulate residues lack synergistic cavitation effects. Therefore, there is an urgent need to design a high-efficiency nozzle multi-energy field synergistic cleaning system that can overcome these shortcomings.

[0003] To overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, Chinese patent discloses an industrial cleaning device [application number: 202310028533.X], which includes a mover, a ground cleaning mechanism, a surface cleaning mechanism, a receiving box, a first camera, and a controller. The receiving box is connected to both the ground cleaning mechanism and the surface cleaning mechanism and is located inside the mover. The ground cleaning mechanism is located at the bottom of the mover, and the surface cleaning mechanism is located on one side of the mover. The first camera is located on the top side of the mover and is used to acquire on-site images around the mover and send them to the controller. The controller is used to identify objects with accumulated dust on their surfaces based on the on-site images, so that the mover drives the ground cleaning mechanism and the surface cleaning mechanism to approach the object. The controller is also used to control the surface cleaning mechanism to clean the dust on the surface of the object and the ground cleaning mechanism to clean the dust on the ground around the object. However, this solution still has insufficient cleaning ability for the micropores of the workpiece during the cleaning process, cannot achieve multi-field synergistic effect, lacks a swirling flow guiding structure and a high-frequency shearing mechanism, and has the defects of limited cleaning efficiency and poor adaptability. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a high-efficiency cleaning system with multi-energy field synergy of nozzles.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] A high-efficiency nozzle multi-energy field coordinated cleaning system includes a cleaning machine body, on which a vacuum pump, a cleaning tank and a waste liquid tank are provided. The vacuum pump and the cleaning tank are connected by a pipeline. The cleaning tank has a cleaning chamber, and a cleaning basket is installed in the cleaning chamber. A combined high-pressure ultrasonic coupling cleaning mechanism is provided above the cleaning basket.

[0007] In the above-mentioned high-efficiency nozzle multi-energy field coordinated cleaning system, the combined high-pressure ultrasonic coupling cleaning mechanism includes several nozzle modules disposed at the top of the cleaning chamber. Each nozzle module consists of a front end body, a middle end body, and a rear end body. The rear end body is provided with a high-pressure swirling structure, and the middle end body is provided with an ultrasonic cavitation structure. The positions of the high-pressure swirling structure and the ultrasonic cavitation structure correspond to each other.

[0008] In the aforementioned high-efficiency nozzle multi-energy field coordinated cleaning system, the high-pressure swirling structure includes logarithmic swirling blades disposed in the rear end body, wherein the helix angle of the logarithmic swirling blades is 45°.

[0009] In the aforementioned high-efficiency nozzle multi-energy field coordinated cleaning system, the rear end body has a contraction-expansion flow channel. The inner diameter of the contraction-expansion flow channel gradually increases from the end closer to the middle end body. The logarithmic swirl vane is located in the inlet section of the contraction-expansion flow channel. The starting end of the logarithmic swirl vane smoothly transitions to the inlet of the contraction-expansion flow channel, and the end extends to the throat of the contraction-expansion flow channel.

[0010] In the aforementioned high-efficiency nozzle multi-energy field coordinated cleaning system, the logarithmic swirl blades are uniformly distributed circumferentially along the inner wall of the contraction and expansion channel, and the logarithmic swirl blades are fixed to the inner wall of the contraction and expansion channel by laser welding.

[0011] In the aforementioned high-efficiency nozzle multi-energy field coordinated cleaning system, the radius of the logarithmic swirl blades gradually increases from the end closest to the central body to the end furthest away.

[0012] In the aforementioned high-efficiency nozzle multi-energy field coordinated cleaning system, the ultrasonic cavitation structure includes several ultrasonic transducers disposed in the middle body, and the several ultrasonic transducers are distributed in a ring array along the center point of the middle body.

[0013] In the above-mentioned high-efficiency nozzle multi-energy field coordinated cleaning system, the middle body has a resonant cavity, and the ultrasonic transducer is embedded in the inner wall of the middle body and its inner end extends into the resonant cavity.

[0014] In the aforementioned high-efficiency nozzle multi-energy field coordinated cleaning system, the ultrasonic transducer has an ultrasonic frequency of 20–40 kHz and a sound pressure level ≥140 dB.

[0015] In the aforementioned high-efficiency nozzle multi-energy field coordinated cleaning system, the front end body has a spray chamber, and the inner diameter of the spray chamber gradually decreases from the end closer to the middle body.

[0016] Compared with existing technologies, the advantages of this invention are:

[0017] 1. This invention sets up a combined high-pressure ultrasonic coupling cleaning mechanism, which uses the coupling effect of high-pressure vortex and ultrasonic cavitation to achieve a dual cleaning mechanism of "macroscopic impact + microscopic stripping", which significantly improves the removal efficiency of various pollutants (particulate impurities, grease, oxides).

[0018] 2. This invention embeds an ultrasonic transducer into the internal flow channel of the nozzle, and combines logarithmic swirl blades with geometric optimization of the contraction and expansion flow channel to achieve efficient coupling of high-pressure water flow and ultrasonic energy, avoiding the energy attenuation problem of external equipment.

[0019] 3. The logarithmic swirling blades in this invention enhance turbulent kinetic energy and high-frequency shear force by optimizing the turbulent boundary layer; the contraction and expansion channels utilize the Venturi effect to accelerate the water flow to 200-300 m / s, forming a high-speed jet, which enhances the ability to remove stubborn dirt.

[0020] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the cleaning tank.

[0023] Figure 3 This is a cross-sectional schematic diagram of the cleaning tank.

[0024] Figure 4 This is a structural diagram of the nozzle module.

[0025] Figure 5 This is a cross-sectional schematic diagram of the nozzle module.

[0026] Figure 6 This is a schematic diagram illustrating the operating principle of the nozzle module.

[0027] In the diagram: 1. Cleaning machine body; 2. Vacuum pump; 3. Cleaning tank; 4. Waste liquid tank; 5. Cleaning chamber; 6. Cleaning basket; 7. Combined high-pressure ultrasonic coupling cleaning mechanism; 8. Nozzle module; 9. Front end body; 10. Middle end body; 11. Rear end body; 12. High-pressure vortex structure; 13. Ultrasonic cavitation structure; 14. Logarithmic vortex blades; 15. Contraction and expansion flow channel; 16. Ultrasonic transducer; 17. Resonance cavity; 18. Jet cavity. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1-6 As shown, a high-efficiency nozzle multi-energy field coordinated cleaning system includes a cleaning machine body 1. The cleaning machine body 1 is equipped with a vacuum pump 2, a cleaning tank 3 and a waste liquid tank 4. The vacuum pump 2 and the cleaning tank 3 are connected by a pipeline. The cleaning tank 3 has a cleaning chamber 5. The cleaning chamber 5 is equipped with a cleaning basket 6. A combined high-pressure ultrasonic coupling cleaning mechanism 7 is provided above the cleaning basket 6.

[0030] In this embodiment, during use, the workpiece to be cleaned is placed in the cleaning basket 6. At this time, the combined high-pressure ultrasonic coupling cleaning mechanism 7 is installed vertically downwards to perform impact cleaning on the upper surface and deep hole structure of the workpiece in the cleaning basket 6. The servo motor drives the combined high-pressure ultrasonic coupling cleaning mechanism 7 to start. The combined high-pressure ultrasonic coupling cleaning mechanism 7 realizes the coupling of high-pressure water jet and low-frequency ultrasonic waves. The internal resonant cavity design realizes energy superposition. Combined with the Venturi effect to accelerate water flow and optimize the vortex blades, the cleaning efficiency of complex surfaces is significantly improved.

[0031] Combination Figure 1-6 As shown, the combined high-pressure ultrasonic coupling cleaning mechanism 7 includes several nozzle modules 8 disposed on the top of the cleaning chamber 5. Each nozzle module 8 consists of a front end body 9, a middle end body 10, and a rear end body 11. The rear end body 11 is provided with a high-pressure swirling structure 12, and the middle end body 10 is provided with an ultrasonic cavitation structure 13. The positions of the high-pressure swirling structure 12 and the ultrasonic cavitation structure 13 are corresponding.

[0032] Specifically, during the cleaning process, the rear end body 11 increases the water flow velocity to 200-300 m / s through the Venturi effect, forming a high-speed jet. The high-pressure vortex structure 12 adopts a logarithmic spiral linear structure, which optimizes the turbulent boundary layer, increases the turbulent kinetic energy, enhances the high-frequency shearing and stripping capability, and enables the water flow to actively shear. The ultrasonic cavitation structure 13 couples with the high-pressure water flow to excite the acoustic waves through resonance, thereby increasing the cavitation bubble density and improving the cavitation intensity.

[0033] Combination Figure 3 , Figure 5As shown, the high-pressure swirl structure 12 includes logarithmic swirl blades 14 disposed within the rear end body 11. The helix angle of the logarithmic swirl blades 14 is 45°. The rear end body 11 has a contraction-expansion channel 15. The inner diameter of the contraction-expansion channel 15 gradually increases from the end closer to the middle end body 10. The logarithmic swirl blades 14 are located at the inlet section of the contraction-expansion channel 15. The starting end of the logarithmic swirl blades 14 smoothly transitions to the inlet of the contraction-expansion channel 15, and the end extends to the throat of the contraction-expansion channel 15. The logarithmic swirl blades 14 are evenly distributed circumferentially along the inner wall of the contraction-expansion channel 15. The logarithmic swirl blades 14 are fixed to the inner wall of the contraction-expansion channel 15 by laser welding. The radius of the logarithmic swirl blades 14 gradually increases from the end closer to the middle end body 10.

[0034] In this embodiment, the logarithmic swirl blade 14 has a blade spacing of 5 mm and adopts a logarithmic spiral design. Through the Venturi effect, the water flow velocity is increased to 200-300 m / s to form a high-speed jet. The blade initiation point ensures a smooth transition at the inlet of the flow channel and reduces flow separation. The radius of the logarithmic spiral increases with the angle, matching the velocity change of the flow channel contraction. The spiral guides the fluid to form a stable rotating flow field, enhances the water flow shear force, and strengthens the removal effect of dirt.

[0035] The ultrasonic cavitation structure 13 includes a plurality of ultrasonic transducers 16 disposed within the middle body 10. The plurality of ultrasonic transducers 16 are arranged in a ring array along the center point of the middle body 10. The middle body 10 has a resonant cavity 17. The ultrasonic transducers 16 are embedded in the inner wall of the middle body 10 and their inner ends extend into the resonant cavity 17. The ultrasonic frequency of the ultrasonic transducers 16 is 20-40kHz and the sound pressure level is ≥140dB.

[0036] In this embodiment, the ultrasonic transducer 16 is embedded in the inner wall of the nozzle, with its radiating surface extending 3-5 mm into the flow channel. It couples with the high-pressure water flow-excited sound waves through resonance in the resonant cavity 17, increasing the cavitation bubble density and cavitation intensity. The resonant cavity 17 has a volume of 50 mL and a neck diameter of 10 mm. Resonance is excited by matching the water flow frequency, increasing the sound pressure level and expanding the cavitation effect coverage. The ultrasonic transducer 16 is arranged as follows: each central body 10 embeds a group of 8 ultrasonic transducers. The ultrasonic transducers are embedded in the inner wall of the nozzle's flow channel, evenly distributed circumferentially along the flow channel. The radiating surface of the ultrasonic transducer 16 extends 3-5 mm into the flow channel, directly contacting the water flow. To ensure efficient transmission of the cavitation effect, a synergistic mechanism is employed: ultrasonic cavitation bubbles collapse under the impact of high-pressure jets, generating localized high temperatures and micro-jets, which synergistically decompose polymer residues and micron-sized particulate contaminants. The built-in design of the ultrasonic transducer 16 also avoids the sound wave attenuation problem of traditional external transducers. The radiating surface extends into the flow channel to directly excite the water flow. Combined with the sound wave focusing effect of the resonant cavity 17, the cavitation intensity is significantly improved. The coupling effect of high-speed water flow and ultrasound causes the cavitation bubbles to generate stronger micro-jets when they collapse under high pressure, which disrupts the intermolecular forces between dirt and substrate (such as van der Waals forces and hydrogen bonds), reduces adhesion, and facilitates subsequent high-pressure water rinsing.

[0037] Combination Figure 5 As shown, the front end body 9 has a spray cavity 18, and the inner diameter of the spray cavity 18 gradually decreases from the end closer to the middle end body 10.

[0038] In this embodiment, the inner diameter of the spray chamber 18 gradually decreases from the end closer to the middle body 10 to the end further away, forming a further high-pressure jet at the water outlet. The converging flow channel further amplifies the water flow velocity, forming a directional high-pressure jet that combines with the dirt particles stripped by ultrasonic cavitation. Through the "impact-stripping-flushing" cycle, efficient cleaning is achieved.

[0039] The working principle of this invention is:

[0040] During the cleaning process, the servo motor drives each nozzle module 8 to start. The logarithmic swirling blades 14 inside the nozzle module 8 shear the water flow to form a high-intensity swirling flow. The Venturi effect increases the water flow velocity, and the high-pressure water jet removes large particles of dirt (such as metal shavings and thick layers of oil) from the surface through mechanical impact.

[0041] Ultrasonic waves are generated by the ultrasonic transducer 16. These waves produce high-frequency pressure waves in the liquid, forming microbubbles (cavitation bubbles). When these bubbles burst, they release localized high pressure and high temperature, breaking down contaminants (such as oxide layers and micron-sized particles) attached to the micropores. The high-pressure water flow transmits the ultrasonic energy to deeper crevices, expanding the cavitation range and exciting a cluster of high-intensity cavitation bubbles, which, in conjunction with the jet impact, complete the deep cleaning process.

[0042] The specific embodiments described herein are merely illustrative examples of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention.

[0043] Although this document frequently uses terms such as the main body of the cleaning machine (1), vacuum pump (2), cleaning tank (3), waste liquid tank (4), cleaning chamber (5), cleaning basket (6), combined high-pressure ultrasonic coupling cleaning mechanism (7), nozzle module (8), front end body (9), middle end body (10), rear end body (11), high-pressure vortex structure (12), ultrasonic cavitation structure (13), logarithmic vortex blades (14), contraction-expansion flow channel (15), ultrasonic transducer (16), resonant cavity (17), and jet cavity (18), the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A high-efficiency nozzle multi-energy field coordinated cleaning system, comprising a cleaning machine body (1), wherein the cleaning machine body (1) is equipped with a vacuum pump (2), a cleaning tank (3) and a waste liquid tank (4), wherein the vacuum pump (2) and the cleaning tank (3) are connected by a pipeline, characterized in that, The cleaning tank (3) has a cleaning chamber (5), a cleaning basket (6) is installed in the cleaning chamber (5), and a combined high-pressure ultrasonic coupling cleaning mechanism (7) is provided above the cleaning basket (6); The combined high-pressure ultrasonic coupling cleaning mechanism (7) includes several nozzle modules (8) set on the top of the cleaning chamber (5). The nozzle module (8) is composed of a front end body (9), a middle end body (10) and a rear end body (11). The rear end body (11) is provided with a high-pressure vortex structure (12), and the middle end body (10) is provided with an ultrasonic cavitation structure (13). The high-pressure vortex structure (12) and the ultrasonic cavitation structure (13) are positioned corresponding to each other. The high-pressure swirl structure (12) includes a logarithmic swirl blade (14) disposed in the rear end body (11), the helix angle of the logarithmic swirl blade (14) is 45°, the rear end body (11) has a contraction-expansion channel (15), the inner diameter of the contraction-expansion channel (15) gradually increases from near to far from the middle end body (10), the logarithmic swirl blade (14) is located in the inlet section of the contraction-expansion channel (15), the starting end of the logarithmic swirl blade (14) smoothly transitions to the inlet of the contraction-expansion channel (15), and the end extends to the throat of the contraction-expansion channel (15); The ultrasonic cavitation structure (13) includes a plurality of ultrasonic transducers (16) disposed in the middle body (10). The plurality of ultrasonic transducers (16) are arranged in a ring array along the center point of the middle body (10). The middle body (10) has a resonant cavity (17). The ultrasonic transducers (16) are embedded in the inner wall of the middle body (10) and their inner ends extend into the resonant cavity (17).

2. The high-efficiency nozzle multi-energy field synergistic cleaning system according to claim 1, characterized in that, The logarithmic swirl blades (14) are evenly distributed circumferentially along the inner wall of the contraction-expansion channel (15), and the logarithmic swirl blades (14) are fixed to the inner wall of the contraction-expansion channel (15) by laser welding.

3. The high-efficiency nozzle multi-energy field synergistic cleaning system according to claim 1, characterized in that, The radius of the logarithmic swirl blade (14) gradually increases from the end closest to the middle body (10) toward the end furthest away.

4. The high-efficiency nozzle multi-energy field synergistic cleaning system according to claim 1, characterized in that, The ultrasonic transducer (16) has an ultrasonic frequency of 20-40kHz and a sound pressure level of ≥140dB.

5. The high-efficiency nozzle multi-energy field synergistic cleaning system according to claim 1, characterized in that, The front end body (9) has a spray cavity (18), and the inner diameter of the spray cavity (18) gradually decreases from the end closer to the middle end body (10) to the end further away from the middle end body (10).

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