Sea sand cleaning system based on micro-nano bubbles

Abstract

The utility model discloses a sea sand cleaning system based on micro-nano bubble, including micro-nano bubble generating device, sand-water mixing device, slurry pump, whirlcone, delivery pipeline and screening device, micro-nano bubble generating device is provided in the one side of sand-water mixing device, the sand-water mixing device passes through the slurry pump and is communicated with whirlcone, the delivery pipeline passes through the whirlcone, the delivery pipeline passes through the delivery pipeline, the screening device passes through the delivery pipeline, the delivery pipeline passes through the delivery pipeline, the delivery pipeline passes through the delivery pipeline. The screening device is arranged below the swirler, and the micro-nano bubble generating device, the sand-water mixing device, the slurry pump and the swirler are sequentially communicated through a conveying pipeline; through mutual cooperation of the micro-nano bubble generating device, the sand-water mixing device, the slurry pump, the cyclone, the conveying pipeline and the screening device, sea sand is cleaned by utilizing the characteristics of micro-nano bubbles, and chloride ions, pollutants and the like attached to the surface, tiny gaps and deep layers in the sea sand are stripped out, so that the efficient and sufficient cleaning effect is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of sea sand cleaning technology, and in particular relates to a sea sand cleaning system based on micro-nano bubbles. Background Technology

[0002] Sea sand desalination is a process that uses technology to remove salt, mud, and impurities from sea sand, enabling it to meet the standards for construction sand. This process has significant economic, environmental, and social implications. Common sea sand washing processes include water washing, high-pressure spraying, chemical cleaning, and microbial dechlorination. However, even when using these methods to desalinate sea sand, the chloride ion (Cl-) content in the sea sand tends to rise again after a period of time. This issue is particularly critical in the application of construction sand, as excessively high chloride ion content in construction sand can lead to corrosion of the reinforcing steel in reinforced concrete.

[0003] The main reasons for chlorination in sea sand include the following: 1) It is difficult to completely remove chloride ions from the deep layers of sea sand particles, and the retained chloride ions may still be gradually released later; 2) Sea sand has a certain degree of hygroscopicity. In a high humidity environment, moisture in the air may cause chloride ions to dissolve and migrate to the surface of the sand particles, resulting in an increase in the surface chloride ion content; 3) If the desalination treatment is not thorough, particles with high local chloride ion content may lead to an increase in the overall chloride ion content. Moreover, if the desalinated sea sand is not properly stored, it is easily affected by external pollution, such as exposure to saline air, ground, or rainwater. External salt may adhere to and penetrate into the sea sand, increasing the chloride ion content; 4) There is a chemical equilibrium restoration effect. During the chemical equilibrium process, chloride ions inside and on the surface of sea sand will redistribute, leading to an increase in the surface chloride ion content. This phenomenon is more likely to occur in desalinated sea sand that has been left to stand for a long time. Utility Model Content

[0004] To address the deficiencies in the aforementioned background technology, the purpose of this utility model is to provide a sea sand cleaning system based on micro-nano bubbles. This system utilizes the characteristics of micro-nano bubbles to perform deep cleaning of sea sand, completely separating and removing dirt and chloride ions from the surface of sea sand particles and their tiny internal crevices, thereby preventing the re-chlorination phenomenon that occurs during sea sand desalination.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A sea sand washing system based on micro-nano bubbles includes a micro-nano bubble generator, a sand-water mixing device, a slurry pump, a hydrocyclone, a conveying pipeline, and a screening device. The micro-nano bubble generator is located on one side of the sand-water mixing device, which is connected to the hydrocyclone via the slurry pump. The screening device is located below the hydrocyclone. The micro-nano bubble generator, sand-water mixing device, slurry pump, and hydrocyclone are sequentially connected via the conveying pipeline.

[0007] Furthermore, the sand-water mixing device includes a mixing container and a stirring component. The stirring component is installed in the mixing container. A water inlet is provided on one side of the mixing container, and a slurry outlet is provided on the other side. A sea sand inlet is provided on the top of the mixing container. The micro-nano bubble generator is connected to the water inlet through a conveying pipeline. One end of the slurry pump is connected to the slurry outlet through a conveying pipeline.

[0008] Furthermore, a slurry inlet is provided in the middle of one side of the hydrocyclone, an upper outlet is provided at the top of the other side, and a lower outlet is provided at the bottom. The other end of the slurry pump is connected to the slurry inlet through a conveying pipeline, and the screening device is located below the lower outlet.

[0009] Furthermore, the screening device is a linear high-frequency vibrating screen, and the screening device is inclined, with its raised side located below the lower outlet of the hydrocyclone.

[0010] Furthermore, the micro-nano bubble generating device includes a first perforated plate, an inner gasket, and a second perforated plate. The inner gasket is disposed between the first perforated plate and the second perforated plate and forms an integrated structure with them. The sand-water mixing device is connected to the second perforated plate of the micro-nano bubble generating device through a conveying pipeline.

[0011] Furthermore, the inner gasket isolates the first perforated plate and the second perforated plate to form a buffer cavity.

[0012] Furthermore, the first perforated plate is provided with a dissolved air water inlet in the middle, and the second perforated plate is provided with a number of release ports spaced apart on the circumference near the inner side of the inner gasket.

[0013] The beneficial effects of this utility model are as follows:

[0014] (1) The sea sand cleaning system of this utility model uses a micro-nano bubble generator, a sand-water mixing device, a slurry pump, a hydrocyclone, a conveying pipeline and a screening device to work together and use the characteristics of micro-nano bubbles to clean the sea sand, removing chloride ions, pollutants and other contaminants attached to the surface, tiny crevices and deep inside of the sea sand, thereby achieving a highly efficient and thorough cleaning effect and avoiding the phenomenon of chlorine return after sea sand cleaning.

[0015] (2) The micro-nano bubble generating device of this utility model forms a buffer cavity by isolating the first and second perforated plates through an inner gasket. The buffer cavity is matched with the dissolved air water inlet set in the first perforated plate. When the pressurized dissolved air water flows in it, it is subjected to huge changes in high and low pressure and instantly generates an internal cavity, thereby generating a large number of dense bubbles with tiny diameters (reaching the micro-nano level). This structure is simple, inexpensive, and easy to clean. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the sea sand cleaning system based on micro-nano bubbles according to this utility model;

[0017] Figure 2 This is a longitudinal cross-sectional view of the micro-nano bubble generation component in the micro-nano bubble-based sea sand cleaning system of this utility model.

[0018] Figure 3 This is an exploded view of the micro-nano bubble generation component in the micro-nano bubble-based sea sand cleaning system of this invention.

[0019] In the figure, 1 is a micro-nano bubble generator, 11 is the first perforated plate, 111 is the dissolved air water inlet, 12 is the inner gasket, 13 is the second perforated plate, 131 is the release port, 14 is the buffer chamber, 2 is the sand-water mixing device, 21 is the mixing container, 22 is the stirring component, 3 is the slurry pump, 4 is the hydrocyclone, 41 is the upper discharge port, 42 is the lower discharge port, 5 is the conveying pipeline, and 6 is the screening device. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] As attached Figure 1-3 As shown in the figure, a sea sand washing system based on micro-nano bubbles in this embodiment of the present invention includes a micro-nano bubble generating device 1, a sand-water mixing device 2, a slurry pump 3, a hydrocyclone 4, a conveying pipeline 5, and a screening device 6. The micro-nano bubble generating device 1 is located on one side of the sand-water mixing device 2. The sand-water mixing device 2 is connected to the hydrocyclone 3 through the slurry pump 3. The screening device 6 is located below the hydrocyclone 4. The micro-nano bubble generating device 1, the sand-water mixing device 2, the slurry pump 3, and the hydrocyclone 4 are connected in sequence through the conveying pipeline 5.

[0022] The sand-water mixing device 2 includes a mixing container 21 and a stirring element 22. The stirring element 22 is installed in the mixing container 21 and mixes dissolved air water containing micro-nano bubbles and sea sand through the stirring element 22. The mixing container 21 has a water inlet on one side and a slurry outlet on the other side, and a sea sand inlet on the top. The micro-nano bubble generating device 1 is connected to the water inlet through a conveying pipeline 5, and one end of the slurry pump 3 is connected to the slurry outlet through a conveying pipeline 5.

[0023] The hydrocyclone 4 has a slurry inlet in the middle of one side, an upper outlet 41 at the top of the other side, and a lower outlet 42 at the bottom. The other end of the slurry pump 3 is connected to the slurry inlet through a conveying pipeline 5. The screening device 6 is located below the lower outlet 42.

[0024] During the centrifugal sedimentation process in hydrocyclone 4, the micro-nano bubbles in the mortar and the sludge, chloride ions, water, etc. they carry have low density and small volume. They are weakly affected by centrifugal force in hydrocyclone 4 and will move upward with the internal swirling flow to be discharged from the upper outlet 41. On the other hand, the sea sand in the mortar has a high density and is strongly affected by centrifugal force and gravity in hydrocyclone 4. Under its action, it settles to the lower outlet 42 and is finally discharged to the screening device 6 through the lower outlet 42.

[0025] The screening device 6 is a linear high-frequency vibrating screen. The screening device 6 is set at an angle, with its raised side located below the lower discharge port 42 of the hydrocyclone 4. Through continuous throwing motion of the high-frequency vibrating screen, the sea sand separated and discharged from the hydrocyclone 4 above is further graded, dewatered and processed.

[0026] Reference Figure 2-3 The micro-nano bubble generating device 1 includes a first perforated plate 11, an inner gasket 12, and a second perforated plate 13. The inner gasket 12 is disposed between the first perforated plate 11 and the second perforated plate 13 and forms an integrated structure with them. The sand-water mixing device 2 is connected to the second perforated plate 11 of the micro-nano bubble generating device 1 through a conveying pipeline 5. This structure is simple, inexpensive, and easy to clean.

[0027] The inner gasket 12 isolates the first perforated plate 11 and the second perforated plate 13 to form a buffer cavity 14.

[0028] The first perforated plate 11 has a dissolved air water inlet 111 in the middle, and the second perforated plate 13 has a plurality of release ports 131 spaced apart on the circumference near the inner side of the inner gasket 12. The first perforated plate 11, the inner gasket 12 and the second perforated plate 13 are interconnected.

[0029] In a specific implementation of this invention, the micro / nano bubble generator produces micro / nano bubbles through drastic pressure changes, and its working process is as follows:

[0030] Pressurized (working pressure greater than 0.1MPa) dissolved air water enters through the dissolved air water inlet 111 of the first perforated plate 11. After being squeezed (high pressure) by the inlet 11, the dissolved air water enters the buffer chamber 14. In the buffer chamber 14, energy is suddenly released (low pressure). The pressure changes from high to low pressure, and the dissolved air water instantly generates a large number of dense bubbles with tiny diameters (reaching the micro-nano scale) due to the huge change in pressure. Then, the dissolved air water containing micro-nano bubbles is discharged through several release ports 131 of the second perforated plate 13, and finally sent to the sand-water mixing device 2 through the conveying pipeline 5.

[0031] In a specific implementation of this utility model, the sea sand cleaning system mainly utilizes the characteristics of micro-nano bubbles to clean sea sand, removing chloride ions, contaminants, and other pollutants adhering to the surface, tiny crevices, and deep layers of the sea sand, thereby achieving a highly efficient and thorough cleaning effect. Its workflow is as follows:

[0032] Dissolved air containing micro-nano bubbles is generated by micro-nano bubble generator 1, and then the dissolved air containing micro-nano bubbles is mixed with sea sand by sand-water mixing device 2. The mixed slurry is then pumped to hydrocyclone 4 by slurry pump 3 for centrifugal sedimentation. Finally, the separated sea sand is further classified and dewatered in screening device 6, thus completing the cleaning process.

[0033] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A sea sand cleaning system based on micro / nano bubbles, characterized in that: The device includes a micro-nano bubble generator, a sand-water mixing device, a slurry pump, a hydrocyclone, a conveying pipeline, and a screening device. The micro-nano bubble generator is located on one side of the sand-water mixing device. The sand-water mixing device is connected to the hydrocyclone through the slurry pump. The screening device is located below the hydrocyclone. The micro-nano bubble generator, the sand-water mixing device, the slurry pump, and the hydrocyclone are connected in sequence through the conveying pipeline.

2. The sea sand cleaning system based on micro-nano bubbles according to claim 1, characterized in that: The sand-water mixing device includes a mixing container and a stirring component. The stirring component is installed in the mixing container. A water inlet is provided on one side of the mixing container, and a slurry outlet is provided on the other side. A sea sand inlet is provided on the top of the mixing container. The micro-nano bubble generator is connected to the water inlet through a conveying pipeline. One end of the slurry pump is connected to the slurry outlet through a conveying pipeline.

3. The sea sand cleaning system based on micro-nano bubbles according to claim 1, characterized in that: The hydrocyclone has a slurry inlet in the middle of one side, an upper outlet at the top of the other side, and a lower outlet at the bottom. The other end of the slurry pump is connected to the slurry inlet through a conveying pipeline, and the screening device is located below the lower outlet.

4. The sea sand cleaning system based on micro / nano bubbles according to claim 3, characterized in that: The screening device is a linear high-frequency vibrating screen, and the screening device is set at an angle, with its raised side located below the lower outlet of the hydrocyclone.

5. The sea sand cleaning system based on micro-nano bubbles according to claim 1, characterized in that: The micro-nano bubble generator includes a first perforated plate, an inner gasket, and a second perforated plate. The inner gasket is disposed between the first and second perforated plates and forms an integrated structure with them. The sand-water mixing device is connected to the second perforated plate of the micro-nano bubble generator through a delivery pipeline.

6. The sea sand cleaning system based on micro / nano bubbles according to claim 5, characterized in that: The inner gasket isolates the first perforated plate and the second perforated plate to form a buffer cavity.

7. The sea sand cleaning system based on micro-nano bubbles according to claim 5, characterized in that: The first perforated plate has a dissolved air water inlet in the middle, and the second perforated plate has several release ports spaced apart on the circumference near the inner side of the inner gasket.

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