Cavitation structure and sewage treatment ship

Abstract

The application discloses a cavitation structure and a sewage treatment ship, and relates to the technical field of sewage treatment. The cavitation structure comprises a cavitation piece and a driving assembly. The cavitation piece is provided with a water inlet channel, a water outlet channel and a cavitation channel which are connected with each other. The water inlet channel is arranged along the center axis of the cavitation piece, the water outlet channel is arranged along the radial direction of the cavitation piece, and the two ends of the cavitation channel are connected with the water inlet channel and the water outlet channel respectively. A part of the cavitation channel is formed with a first Venturi pipeline. The driving assembly comprises an ultrasonic transducer and a driving motor. The ultrasonic transducer is connected with the cavitation piece and communicates with the cavitation channel. The driving motor is connected with the cavitation piece and is used for driving the cavitation piece to rotate. The sewage enters the cavitation channel from the water inlet channel. With the high-frequency vibration of the ultrasonic transducer and the passing of the sewage through the first Venturi pipeline, the sewage can be cavitated. With the high-speed rotation of the cavitation piece driven by the driving motor, the cavitation effect can be further enhanced, and the decontamination effect is good.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a cavitation structure and a wastewater treatment vessel. Background Technology

[0002] With increasing public awareness of ecological and environmental protection, the treatment of organic pollutants in wastewater has become a significant challenge. These compounds, including benzene and phenols, can negatively impact the environment if left untreated, causing phenomena such as red tides. Organic pollutants in ship ballast water and domestic sewage require particular attention because they can damage marine ecosystems. By adopting appropriate treatment technologies and strict regulatory measures, the damage of organic pollutants to the marine environment can be reduced, maintaining ecological balance and human health.

[0003] The prior art disclosed in CN113479969A provides a turbulent self-excited cavitation oscillator, comprising a shell, a turbulent liner, a turbulent block, and a water outlet nozzle. The shell has a hollow cavity, and a first end of the shell has a water inlet communicating with the hollow cavity. The turbulent liner is a cylindrical structure and is located within the hollow cavity. The turbulent block is arranged on the inner wall of the turbulent liner. The water outlet nozzle is fixed to the second end of the shell and communicates with the hollow cavity.

[0004] However, the existing cavitation device still has shortcomings. For example, the turbulent material is in a fixed state, and cavitation is achieved only through the collision between water and the stationary turbulent material. The resulting cavitation effect is relatively poor, and the decontamination capacity is not good. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a cavitation structure and a sewage treatment vessel to solve the technical problem that in the prior art, the cavitation device is set with the disturbance in a fixed state, and the cavitation effect is only achieved by the collision between water and the stationary disturbance. The resulting cavitation effect is relatively general and the pollution removal capacity is poor.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a cavitation structure, comprising:

[0008] A cavitation component has an interconnected water inlet channel, a water outlet channel, and a cavitation channel. The water inlet channel is arranged along the rotational axis of the cavitation component, and the water outlet channel is arranged radially along the cavitation component. The two ends of the cavitation channel are respectively connected to the water inlet channel and the water outlet channel. A portion of the cavitation channel forms a first Venturi conduit.

[0009] The driving assembly includes an ultrasonic transducer and a drive motor. The ultrasonic transducer is connected to the cavitation element and communicates with the cavitation channel. The drive motor is connected to the cavitation element and is used to drive the cavitation element to rotate.

[0010] In some embodiments, the cavitation channel further forms a second Venturi conduit, and the ultrasonic transducer is located between the first Venturi conduit and the second Venturi conduit.

[0011] In some embodiments, a Helmholtz self-vibrating jet structure is formed between the connection between the water outlet channel and the cavitation channel and the second Venturi pipe.

[0012] In some embodiments, the water outlet channel has an oscillation cavity formed at the location where it connects with the Helmholtz self-vibrating jet structure, and the oscillation cavity is a cuboid space.

[0013] In some embodiments, there are multiple outlet channels and multiple cavitation channels, which are arranged circumferentially around the rotation center axis of the cavitation element. The cavitation element has multiple branch channels around its rotation center axis. Each branch channel connects the inlet channel and the corresponding outlet channel, and each cavitation channel connects the inlet channel and the corresponding outlet channel.

[0014] In some embodiments, the cavitation assembly further includes a protective shell, an inlet pipe, and an outlet pipe. The protective shell has a receiving cavity, the outlet pipe communicates with the receiving cavity, the inlet pipe extends into the receiving cavity and connects to the inlet channel, and the cavitation element is disposed in the receiving cavity and rotatably connected to the protective shell.

[0015] In some embodiments, the drive assembly further includes a coupling through which the drive motor is rotatably connected to the cavitation element.

[0016] In some embodiments, the protective shell includes a housing and a cover, the housing and the cover being detachably connected by screws.

[0017] Secondly, the present invention also provides a sewage treatment vessel, including a hull and the aforementioned cavitation structure, wherein a sewage treatment chamber is provided in the hull and the cavitation structure is disposed in the sewage treatment chamber.

[0018] In some embodiments, the cavitation structure further includes a water pump and a filter screen, one end of the water pump being connected to the water inlet channel of the cavitation structure, and the other end of the water pump being connected to the filter screen, which is located at the water inlet of the wastewater treatment chamber.

[0019] Compared with existing technologies, the cavitation component of the cavitation structure provided by this invention can be used to remove impurities from sewage. Specifically, after sewage enters through the inlet channel, a small portion of the sewage enters the outlet channel, while the other portion enters the cavitation channel. The high-frequency vibration of the ultrasonic transducer, combined with the resonance of the sewage passing through the first Venturi tube, enhances the cavitation effect on the sewage. Furthermore, the high-speed rotation of the cavitation component driven by the drive motor further enhances the cavitation effect, allowing the cavitated water to be discharged through the outlet channel, resulting in excellent decontamination performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cavitation structure provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the cavitation component provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the sewage treatment vessel provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram showing the internal disassembly of the sewage treatment vessel provided in an embodiment of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] To address the shortcomings of existing cavitation devices that rely solely on collisions between water and stationary turbulent elements for cavitation, resulting in limited cavitation effectiveness and poor decontamination, this invention provides a cavitation structure that achieves resonance between an ultrasonic transducer and a first Venturi tube, enhancing the cavitation effect on wastewater. Furthermore, a drive motor propels the cavitation components to rotate at high speed, further amplifying the cavitation effect. The cavitated water is then discharged through an outlet channel. This invention offers a simple cavitation structure with excellent decontamination performance.

[0026] It should be noted that the cavitation structure described in this invention is used in, but not limited to, sewage treatment vessels. For ease of explanation, this invention will only use the application of the cavitation structure in sewage treatment vessels as an example. The principle of applying the cavitation structure to other types of equipment is essentially the same as that applied to sewage treatment vessels, and will not be elaborated here.

[0027] Please see Figure 1 and Figure 2 , Figure 1This is a schematic diagram of a cavitation structure in one embodiment of the present invention. The cavitation structure includes a cavitation component 1 and a driving component 2. The cavitation component 1 includes a cavitation element 19, which has an inlet channel 11, an outlet channel 12, and a cavitation channel 13 that are interconnected. The inlet channel 11 is arranged along the rotational axis of the cavitation element 19, and the outlet channel 12 is arranged radially along the cavitation element 19. The two ends of the cavitation channel 13 are respectively connected to the inlet channel 11 and the outlet channel 12. A portion of the cavitation channel 13 forms a first Venturi tube 14. The driving component 2 includes an ultrasonic transducer 21 and a driving motor 22. The ultrasonic transducer 21 is connected to the cavitation element 19 and communicates with the cavitation channel 13. The driving motor 22 is connected to the cavitation element 19 and is used to drive the cavitation element 19 to rotate.

[0028] In this embodiment, the inlet channel 11 is used to supply sewage. A small portion of the sewage directly enters the outlet channel, while most of the sewage enters the cavitation channel 13 and undergoes cavitation. Specifically, the cavitation effect on the sewage is enhanced by the high-frequency vibration of the ultrasonic transducer 21 combined with the resonance of the first Venturi tube 14. After cavitation, the sewage is discharged from the outlet channel 12.

[0029] In one embodiment, please refer to Figure 2 The cavitation channel 13 also forms a second Venturi conduit 15. The ultrasonic transducer 21 is located between the first Venturi conduit 14 and the second Venturi conduit 15 to facilitate simultaneous resonance with the two Venturi conduits, allowing wastewater to achieve a better decontamination effect after passing through the two Venturi conduits. In other embodiments, more Venturi conduits can be provided, such as three or more.

[0030] In one embodiment, please refer to Figure 2 A Helmholtz self-oscillating jet structure 16 is formed between the connection between the water outlet channel 12 and the cavitation channel 13 and the second Venturi pipe 15. During sewage jetting, cavitation bubbles are generated by the oscillation characteristics of the Helmholtz self-oscillating jet structure 16. When ejected towards the water outlet channel 12, the jet impact is enhanced, thereby further improving the cavitation effect and strengthening the sewage decontamination effect. In this embodiment, the Helmholtz self-oscillating jet structure 16 includes trapezoidal cavities on both sides of the cavitation channel 13, and the two trapezoidal cavities have the same size and structural shape. In other embodiments, other shapes can be used instead of trapezoidal cavities, such as triangles, semicircles, etc.

[0031] In one embodiment, please refer to Figure 2 The water outlet channel 12 has an oscillation cavity 17 formed at the part where it is connected to the Helmholtz self-vibrating jet structure 16. In this embodiment, the oscillation cavity is a cuboid space. The sewage sprayed from the cavitation channel 13 enters the oscillation cavity 17, which can further cavitate and improve the sewage decontamination effect.

[0032] In one embodiment, please refer to Figure 2 There are multiple outlet channels 12 and cavitation channels 13, arranged circumferentially around the rotation center axis of the cavitation component 19. The cavitation component 19 has multiple branch channels 18 around its rotation center axis. Each branch channel 18 connects the inlet channel 11 and the corresponding outlet channel 12, and each cavitation channel 13 connects the inlet channel 11 and the corresponding outlet channel 12. In this embodiment, there are twelve outlet channels 12 and cavitation channels 13. Wastewater entering from the inlet channel 11 can enter each cavitation channel 13 along the multiple branch channels 18 when the cavitation component 19 rotates at high speed. After cavitation and decontamination in each cavitation channel 13, it flows out from each outlet channel 12. Therefore, this embodiment, by setting multiple outlet channels 12 and cavitation channels 13, helps to improve the wastewater decontamination efficiency and also enhances the cavitation effect.

[0033] In one embodiment, please refer to Figure 2 The cavitation assembly 1 also includes a protective shell 111, an inlet pipe 112, and an outlet pipe 113. The protective shell 111 has a receiving cavity (not shown in the figure), the outlet pipe 113 connects to the receiving cavity, the inlet pipe 112 extends into the receiving cavity and connects to the inlet channel 11, and the cavitation element 19 is disposed in the receiving cavity and rotatably connected to the protective shell 111. In this embodiment, the protective shell 111 can protect the cavitation element 19, and also allows water that has undergone decontamination from each outlet channel 12 to flow into the receiving cavity and then converge in the outlet pipe 113 for centralized discharge, facilitating the collection of the decontaminated water.

[0034] In one embodiment, please refer to Figure 1 The drive assembly 2 also includes a coupling 23, through which the drive motor 22 is connected to the cavitation element 19 and is used to drive the cavitation element 19 to rotate at high speed to enhance the cavitation effect.

[0035] In one embodiment, please refer to Figure 1 The protective shell 111 includes a shell 114 and a cover 115. The shell 114 and the cover 115 are detachably connected by screws to facilitate disassembly and assembly for maintenance of the internal cavitation component 19. In other embodiments, the shell 114 and the cover 115 may also be connected by snap-fit ​​or be an integrally formed structure.

[0036] refer to Figure 3 and Figure 4 The present invention also provides a sewage treatment vessel 101, including a hull 102 and the aforementioned cavitation structure 100. The hull 102 is provided with a sewage treatment chamber 103, and the cavitation structure 100 is disposed in the sewage treatment chamber 103.

[0037] In one embodiment, please refer to Figure 4 The cavitation structure 100 also includes a water pump 3 and a filter screen 4. One end of the water pump 3 is connected to the water inlet channel 11 of the cavitation structure 100, specifically the water inlet channel 11 of the cavitation component 19. The other end of the water pump 3 is connected to the filter screen 4, which is located at the water inlet of the wastewater treatment chamber 103. The wastewater to be treated is initially filtered by the filter screen 4, which can block some larger impurities. The wastewater filtered by the filter screen 4 then enters the water inlet channel 11 for cavitation, which helps to improve the cavitation decontamination efficiency.

[0038] In this embodiment, the hull 102 is also equipped with a connected solar panel 104 and a battery (not shown in the figure). The solar panel 104 is used to charge the battery using solar energy. The battery is connected to the drive motor 22 and the water pump 3, and is used to supply power to the drive motor 22 and the water pump 3. The battery is also connected to the propulsion system of the hull 102, providing a power source for the navigation of the hull 102.

[0039] To better understand this invention, the following is combined with... Figures 1 to 4 The technical solution of the present invention will be described in detail below:

[0040] The hull 102 of this invention can travel to the area where sewage treatment is required. By operating the control switch on the hull 102, the drive motor 22, ultrasonic transducer 21, and water pump 3 are controlled. The water pump 3 draws the sewage to be treated into the inlet channel 11, where it enters the cavitation channel 13 for cavitation. Through the resonance of the Venturi tube and the Helmholtz self-vibrating jet structure 16, the sewage enters the oscillation chamber 17 for cavitation, greatly improving cavitation efficiency. Combined with the drive motor 22 driving the cavitation component 19 to rotate at high speed, the simple mechanical structure further enhances the cavitation effect and provides strong decontamination. The treated water is discharged through the outlet pipe 113 and released in situ.

[0041] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A cavitation structure, characterized in that, include: A cavitation assembly includes a cavitation element having a central axis of rotation and interconnected inlet, outlet, and cavitation channels. The inlet channel is arranged along the central axis of rotation, and the outlet channel is arranged perpendicular to the central axis of rotation. The two ends of the cavitation channel are respectively connected to the inlet channel and the outlet channel. A portion of the cavitation channel forms a first Venturi conduit. The driving assembly includes an ultrasonic transducer and a drive motor. The ultrasonic transducer is connected to the cavitation element and communicates with the cavitation channel. The drive motor is connected to the cavitation element and is used to drive the cavitation element to rotate about the rotation center axis.

2. The cavitation structure according to claim 1, characterized in that, The cavitation channel also forms a second Venturi conduit, and the ultrasonic transducer is located between the first Venturi conduit and the second Venturi conduit.

3. The cavitation structure according to claim 2, characterized in that, A Helmholtz self-vibrating jet structure is formed between the connection between the water outlet channel and the cavitation channel and the second Venturi pipe.

4. The cavitation structure according to claim 3, characterized in that, The water outlet channel has an oscillation cavity formed at the part where it connects with the Helmholtz self-vibrating jet structure. The oscillation cavity is a cuboid space.

5. The cavitation structure according to claim 1, characterized in that, There are multiple outlet channels and multiple cavitation channels, which are arranged circumferentially around the rotation center axis of the cavitation component. The cavitation component has multiple branch channels around its rotation center axis. Each branch channel connects the inlet channel and the corresponding outlet channel, and each cavitation channel connects the inlet channel and the corresponding outlet channel.

6. The cavitation structure according to claim 1, characterized in that, The cavitation assembly further includes a protective shell, an inlet pipe, and an outlet pipe. The protective shell has a receiving cavity, the outlet pipe is connected to the receiving cavity, the inlet pipe extends into the receiving cavity and is connected to the inlet channel, and the cavitation element is disposed in the receiving cavity and rotatably connected to the protective shell.

7. The cavitation structure according to claim 6, characterized in that, The drive assembly also includes a coupling, through which the drive motor is rotatably connected to the cavitation element.

8. The cavitation structure according to claim 6, characterized in that, The protective shell includes a shell and a cover, and the shell and the cover are detachably connected by screws.

9. A sewage treatment vessel, characterized in that, The ship includes a hull and a cavitation structure as described in any one of claims 1-8, wherein the hull is provided with a sewage treatment chamber and the cavitation structure is disposed in the sewage treatment chamber.

10. The sewage treatment vessel according to claim 9, characterized in that, The cavitation structure also includes a water pump and a filter screen. One end of the water pump is connected to the water inlet channel of the cavitation structure, and the other end of the water pump is connected to the filter screen, which is located at the water inlet of the sewage treatment chamber.

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