A water body algae removal device

Abstract

The application discloses a water body algae removing device, which comprises a ship body, a salvaging mechanism arranged on the ship body, a dewatering cabin arranged on the discharging end of the salvaging mechanism, a filter screen arranged in the dewatering cabin, a material pressing mechanism arranged above the filter screen in the dewatering cabin, a liquid storage cavity arranged below the filter screen in the dewatering cabin and a storage cabin communicated with the discharging port of the dewatering cabin. The material pressing mechanism in the dewatering cabin is used for online extrusion of water algae, so that the water content of the water algae is reduced, the volume of the water algae is reduced, and more water algae can be stored in the storage cabin. Compared with the prior art, the ship body can reduce the frequency of unloading on the shore, saves the voyage time of going back and forth to the salvaging point, and has higher operation efficiency when the water body algae removing device is used for water algae salvaging.

Description

Technical Field

[0001] This invention relates to the field of water treatment devices, and in particular, to a device for removing algae from water bodies. Background Technology

[0002] The unmanned algae removal device is a water surface algae removal equipment that integrates AI visual recognition and autonomous operation. Equipped with a multispectral camera and edge computing unit, it can automatically scan the water surface. Once it detects signs of algae blooms or other algae proliferation, it immediately activates the vessel and autonomously plans its route using GPS and millimeter-wave radar, quickly heading towards the suspected area. Upon approach, the device efficiently collects the algae-laden water into the vessel's cabin using a figure-eight collection component or a flexible algae suction pump at the front end, achieving a fully unmanned process from "perception to decision-making to removal." This device has been applied in waters such as Taihu Lake and Dianchi Lake, improving efficiency by more than 45% compared to traditional manual removal, and significantly reducing labor costs and emergency response time.

[0003] Currently, Chinese patent CN217128174U discloses a highly efficient algae harvesting vessel, including a harvesting hull equipped with harvesting components and a collection area. The harvesting components scoop up algae from the water and store it in the collection area. Once the collection area is full, the vessel returns to shore to unload, completing one harvesting operation. However, because algae contain a large amount of water, the collection area easily becomes full, requiring the vessel to frequently return to shore to unload. This unnecessary voyage significantly reduces the efficiency of the harvesting operation. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for removing algae from water bodies.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A device for removing algae from water bodies includes a hull with a retrieval mechanism. A dehydration chamber is located at the discharge end of the retrieval mechanism, adapted to receive algae discharged from the discharge end. A filter screen is installed inside the dehydration chamber, and a pressing mechanism is located above the filter screen inside the dehydration chamber, adapted to compress the algae within the dehydration chamber. A liquid storage chamber is constructed below the filter screen inside the dehydration chamber, allowing filtrate to flow through the filter screen into the liquid storage chamber. A storage chamber is connected to the discharge port of the dehydration chamber.

[0007] Preferably, the pressing mechanism includes a spiral filter press mechanism, a plate and frame filter press mechanism, or an eccentric roller filter press mechanism.

[0008] Preferably, the liquid storage chamber is divided into a sequentially distributed water inlet zone, a coagulation-flocculation zone, an air flotation zone, and a clear liquid zone.

[0009] Preferably, a first reflux pump is provided at the bottom of the flotation zone, which is used to pump the sludge at the bottom of the flotation zone into the storage chamber.

[0010] Preferably, a temporary storage hopper is provided on the side of the flotation zone, and a slag scraping mechanism is provided on the top of the flotation zone. The slag scraping mechanism is used to scrape the slag on the top of the flotation zone into the temporary storage hopper.

[0011] Preferably, a second reflux pump is provided at the bottom of the temporary storage hopper, which is used to pump the scum in the temporary storage hopper into the storage chamber.

[0012] Preferably, a third reflux pump is provided at the bottom of the clear liquid zone, the third reflux pump being used to pump the clear liquid in the clear liquid zone to the outside of the hull.

[0013] Preferably, the retrieval mechanism includes a rotatable material collection cylinder.

[0014] Preferably, the collecting cylinder includes a frame and a plurality of collecting plates arranged circumferentially on the frame. The collecting plates are rotatably mounted on the frame, and an elastic reset member is connected between the rotating shaft of the collecting plate and the frame. In the natural state of the collecting plates, the plurality of collecting plates are sequentially spliced ​​circumferentially, and the collecting cylinder defines sequentially distributed lifting area, unloading area, and water inlet area circumferentially. A first arc-shaped rack is provided on the mounting base of the collecting cylinder, and the first arc-shaped rack is located at the end of the water inlet area. The mounting base of the collecting cylinder is provided with... The material collection plate has a second arc-shaped rack extending from the end of the water inlet area to the discharge area. A first gear and a second gear are sequentially arranged axially on the rotating shaft of the material collection plate. The first gear and the second gear are located radially between the first arc-shaped rack and the second arc-shaped rack. As the material collection cylinder rotates, the first gear can mesh with the first arc-shaped rack, causing the material collection plate to flip to a horizontal position, and the second gear can mesh with the second arc-shaped rack, maintaining the horizontal position of the material collection plate.

[0015] Preferably, the collecting plate includes a frame and a mesh body axially and elastically disposed within the frame. A through-hole is provided on the side wall of the frame, and cutting teeth extending out of the through-hole are provided on the side wall of the mesh body. A plurality of driving protrusions are provided on the end face of the frame, and the plurality of driving protrusions are circumferentially surrounding the rotating shaft of the collecting plate. A driving shaft is provided at the end of the mesh body, and the end of the driving shaft abuts against the driving protrusions.

[0016] The beneficial effects of this invention are:

[0017] 1. The algae are compressed online through a pressing mechanism within the dehydration chamber, thereby reducing the water content and volume of the algae, allowing for the storage of more algae in the storage chamber. Compared to existing technologies, the hull of this invention reduces the frequency of unloading at the shore, saving travel time to and from the harvesting point. The algae removal device of this invention offers higher operational efficiency for algae harvesting.

[0018] 2. By designing the liquid storage chamber into sequentially distributed inlet, coagulation-flocculation, flotation, and clear liquid zones, online conditioning treatment for algae harvesting operations is achieved, reducing the operational pressure on shore-based algae treatment. Furthermore, the treated clear liquid can be discharged back into the water body on-site, thus playing a "purification and circulation" role in the algae harvesting and water restoration process in the outbreak area. Attached Figure Description

[0019] Figure 1 This is a top view of the structure of an embodiment;

[0020] Figure 2 This is a side view structural diagram of an embodiment;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the dehydration chamber;

[0022] Figure 4 This is a schematic diagram of the longitudinal section structure of the material collecting cylinder;

[0023] Figure 5 This is a schematic diagram of the cutting teeth.

[0024] Reference numerals: 1. Hull; 2. Salvage mechanism; 3. Dehydration chamber; 4. Filter screen; 5. Pressing mechanism; 6. Liquid storage chamber; 7. Storage tank; 8. Water inlet area; 9. Coagulation-flocculation zone; 10. Air flotation zone; 11. Clear liquid zone; 12. First reflux pump; 13. Temporary storage hopper; 14. Sludge scraping mechanism; 15. Second reflux pump; 16. Third reflux pump; 17. Collection cylinder; 18. Frame; 19. Collection plate; 20. Elastic reset component; 21. Lifting area; 22. Unloading area; 23. Water inlet area; 24. First arc-shaped rack; 25. Second arc-shaped rack; 26. First gear; 27. Second gear; 28. Frame; 29. ​​Net; 30. Connecting port; 31. Cutting tooth; 32. Drive protrusion; 33. Drive shaft; 34. Vision inspection mechanism. Detailed Implementation

[0025] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1 to 5 As shown, a water algae removal device includes a hull 1, on which a salvage mechanism 2, a storage compartment 7, a visual inspection mechanism 34, and a path navigation mechanism are installed. The visual inspection mechanism 34 can use, for example, a multispectral camera to photograph and detect the water surface. Through image comparison and analysis, it can determine whether "algae bloom" has occurred in the water. Subsequently, the path navigation mechanism can autonomously plan a route using GPS and millimeter-wave radar to control the hull 1 to quickly move towards the suspected area.

[0027] The salvage mechanism 2 can use a rotating collection cylinder 17 or a collection belt (not shown) to lift algae from the water onto the hull 1. Traditionally, algae is directly placed into the storage tank 7, but due to its high water content and large volume, the storage tank 7 easily becomes full, requiring the hull 1 to return to shore multiple times to unload. This travel time reduces the effective salvage time, thus decreasing the efficiency of the salvage operation.

[0028] For this, see Figure 1 , Figure 3 In this disclosure, a dehydration chamber 3 is provided at the discharge end of the retrieval mechanism 2. For example, the algae discharged by the retrieval mechanism 2 will fall directly into the dehydration chamber 3 under the action of gravity. Inside the dehydration chamber 3, a pressing mechanism 5, a filter screen 4, and a liquid storage chamber 6 are arranged vertically in sequence. In this way, the algae will first enter the pressing mechanism 5 to complete the compression and dehydration. The filtrate can be discharged into the liquid storage chamber 6, while the algae filter cake formed by compression can be discharged from the discharge port of the dehydration chamber 3 into the storage chamber 7 under the guidance of the filter screen 4.

[0029] In possible examples, the pressing mechanism 5 may include a screw filter press mechanism, a plate and frame filter press mechanism, or an eccentric roller filter press mechanism. Figure 3 A schematic diagram of the spiral filter press mechanism is shown. As can be seen from the figure, the algae falling into the dehydration chamber 3 can be guided and discharged into the feed port of the spiral filter press mechanism. Under the compression of the screw of the spiral filter press mechanism, the water in the algae will be squeezed out, and then the filtrate will be discharged into the storage chamber 6 through the cylindrical filter screen 4; the filter cake on the screen surface of the filter screen 4 is gradually pushed towards the discharge port of the dehydration chamber 3 until it falls into the storage chamber 7.

[0030] It is understandable that, since the algae has undergone dehydration treatment, the dehydration chamber 3 can store a larger volume of filter cake, which increases the single-time algae retrieval capacity of the hull 1, thereby reducing the frequency of the hull 1 going to the shore to unload, and improving the efficiency of algae retrieval operations.

[0031] See also Figure 3In some embodiments, the liquid storage chamber 6 is designed to be divided into a sequentially distributed inlet zone 8, a coagulation-flocculation zone 9, an air flotation zone 10, and a clear liquid zone 11. A filtrate guide plate can be installed above the inlet zone 8 to guide the filtrate squeezed out by the algae into the inlet zone 8. Under the pumping of the flow path system, the filtrate in the inlet zone 8 can flow into the coagulation-flocculation zone 9 for coagulation and flocculation. Subsequently, the filtrate flows into the air flotation zone 10 for air flotation treatment, and the clear liquid formed in the air flotation zone 10 is discharged into the clear liquid zone 11. It can be understood that by designing the liquid storage chamber 6 into a sequentially distributed inlet zone 8, coagulation-flocculation zone 9, air flotation zone 10, and clear liquid zone 11, online conditioning treatment for algae harvesting operations is achieved, reducing the operational pressure of onshore algae treatment.

[0032] Furthermore, a first return pump 12 is installed at the bottom of the flotation zone 10, and the discharge end of the first return pump 12 is connected to the storage tank 7. This allows the sludge formed at the bottom of the flotation zone 10 to be pumped into the storage tank 7 via the first return pump 12. Using the storage tank 7 as a sludge storage area eliminates the need for a separate sludge storage area within the liquid storage chamber 6, resulting in a more compact structure for the hull 1 and maximizing space utilization. Moreover, the flotation sludge mixed with the algae filter cake, due to its rich content of PAC / PAM flocculants, can be used as an additive to improve the filtration effect of subsequent onshore deep filtration processes.

[0033] For example, a temporary storage hopper 13 can be provided beside the flotation zone 10, and the scum scraping mechanism 14 at the top of the flotation zone 10 is configured to scrape the scum into the temporary storage hopper 13. A second reflux pump 15 is provided at the bottom of the temporary storage hopper 13, and the discharge end of the second reflux pump 15 is also connected to the storage chamber 7. Similar to the first reflux pump 12, the second reflux pump 15 can pump the scum in the temporary storage hopper 13 into the storage chamber 7.

[0034] A third return pump 16 is also installed at the bottom of the clear liquid zone 11. For example, a water quality detection module can be installed in the clear liquid zone 11 to detect and determine whether the clear liquid in the clear liquid zone 11 meets the standards. The third return pump 16 can directly discharge the qualified clear liquid back into the water body to realize the "purification cycle" function of algae removal and water return in the outbreak area.

[0035] Figure 4 , Figure 5 A schematic diagram of the structure of the salvage mechanism 2, preferably a collection cylinder 17, is shown. Notably, the collection cylinder 17 disclosed herein includes a frame 18 rotatably mounted on a mounting base 35 and a plurality of collection plates 19 arranged circumferentially on the frame 18. For example, the collection cylinder 17 can rotate under the drive of a motor, and while partially immersed in the water, algae in the water adhere to the collection plates 19. As the collection cylinder 17 rotates, it is carried away from the water surface and lifted into the dehydration chamber 3 for dehydration treatment.

[0036] More specifically, an elastic reset member 20 is provided between the rotating shaft of the collecting plate 19 and the frame 18. Under the holding force of the elastic reset member 20, several collecting plates 19 will be spliced ​​together circumferentially in their natural state to form a cylindrical structure. According to the water level position of the collecting cylinder 17 in the water body, the collecting cylinder 17 can be defined circumferentially as a sequentially distributed lifting zone 21, unloading zone 22, and water inlet zone 23. Among them, the collecting plates 19 in the lifting zone 21 are expected to use adhesive force to "stick" up the algae in the water to complete the lifting. However, since the collecting plates 19 are in a vertical position in this area, algae are prone to slipping, which ultimately leads to a decrease in the algae collection efficiency of the collecting cylinder 17.

[0037] In this disclosure, a first arc-shaped rack 24 and a second arc-shaped rack 25 are provided on the mounting base 35 of the aggregate holder. The first arc-shaped rack 24 is adapted to be located at the end of the water inlet zone 23, while the second arc-shaped rack 25 is adapted to extend from the end of the water inlet zone 23 to the discharge zone 22. A first gear 26 and a second gear 27 are also sequentially arranged axially on the rotating shaft of the aggregate plate 19. Viewed in cross-section, the first gear 26 and the second gear 27 are located between the first arc-shaped rack 24 and the second arc-shaped rack 25, with the tooth surfaces of the two arc-shaped racks facing each other. This disclosure allows for the following usage process:

[0038] 1. As the collecting cylinder 17 rotates, the collecting plate 19 at the end of the unloading zone 22 will enter the water body in its initial posture under natural conditions. At this time, the collecting plate 19 can smoothly and steadily cut into the water body.

[0039] 2. When the collecting plate 19 rotates to the end of the water inlet area 23, the first gear 26 will mesh with the first arc-shaped rack 24. Under the transmission of the two, the collecting plate 19 will deflect to a horizontal position. Then the horizontal collecting plate 19 can support the algae in the water body, rather than relying solely on the adhesive force between it and the algae.

[0040] 3. Subsequently, the second gear 27 will mesh with the second arc-shaped rack 25, while the first gear 26 and the first arc-shaped rack 24 will separate. Under the transmission of the second gear 27 and the second arc-shaped rack 25, the collecting plate 19 will rotate in the opposite direction while revolving with the rotating drum, thereby maintaining the horizontal posture of the collecting plate 19 and preventing algae from slipping off.

[0041] 4. When the collecting plate 19 rotates to the unloading area 22, the second gear 27 disengages from the second arc-shaped rack 25, and then the elastic reset member 20 drives the collecting plate 19 to return to its initial position, so that the algae on the collecting plate 19 can smoothly slide down and be discharged into the dehydration chamber 3.

[0042] In this disclosure, the cooperation of two gears and two arc-shaped racks ensures that the collecting plate 19 maintains a horizontal posture during its stroke in the lifting zone 21 and the unloading zone 22, achieving more stable and reliable retrieval of algae. When the collecting plate 19 cuts into the water, it also reduces water resistance, minimizing the increase in load pressure on the drive motor of the collecting cylinder 17. The elastic reset element 20 can be a bidirectional torsion spring (not shown), or a stop can be installed on the rotating shaft of the collecting plate 19, with abutment springs on both sides of the stop, thereby maintaining the expected initial posture of the collecting plate 19 in its natural state.

[0043] Furthermore, the elastic reset member 20 may be configured with a damping structure (not shown), which reduces the swaying amplitude of the collecting plate 19 during rotation, thereby enhancing stability. Moreover, when the first gear 26 and the first arc-shaped rack 24 separate, the damping structure slows down the reset speed of the collecting plate 19, allowing the collecting plate 19 to enter the transmission stroke of the second gear 27 and the second arc-shaped rack 25 in the expected horizontal posture.

[0044] The attitude control of the collecting plate 19 in steps 2 and 3 above can be achieved by selecting the transmission ratio of the first gear 26, the first arc rack 24, the second gear 27, and the second arc rack 25. This is something that those skilled in the art should know and understand, and will not be elaborated here.

[0045] See Figure 5 In some embodiments, the collecting plate 19 specifically includes a frame 28 and a mesh 29 axially spring-loaded within the frame 28. For example, the mesh 29 and the frame 28 can be elastically connected by a spring. A connecting opening 30 is also provided through the side wall of the frame 28, and cutting teeth 31 extending from the connecting opening 30 are provided on the side wall of the mesh 29. In addition, a plurality of driving protrusions 32 are provided on the end face of the frame 18, distributed around the rotating shaft of the collecting plate 19, and a driving shaft 33 extending to abut against the driving protrusions 32 is provided on the end of the mesh 29.

[0046] It can be imagined that in step 2 above, as the collecting plate 19 rotates from the initial posture to the horizontal posture, the drive shaft 33 will continuously pass over several drive protrusions 32, thereby causing the net body 29 to bounce continuously within the frame 28. At this time, the collecting plate 19 is in a motion posture of rotating out into the water body. In this way, the cutting teeth 31 on the side wall of the net body 29 can reciprocate to cut rooted plants such as aquatic plants in the water body, thus making it less likely for the collecting cylinder 17 to become entangled.

[0047] In step 3 above, as the collecting plate 19 rotates to maintain a horizontal posture, the drive shaft 33 will also continuously pass over several drive protrusions 32, causing the mesh 29 to bounce continuously within the frame 28. At this time, the mesh 29 can act as a vibrating screen, making it easier to separate the water attached to the algae and reducing the processing pressure of the subsequent pressing mechanism 5.

[0048] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A device for removing algae from water bodies, characterized in that: The vessel includes a hull (1), on which a salvage mechanism (2) is provided. A dehydration chamber (3) is provided at the discharge end of the salvage mechanism (2). The dehydration chamber (3) is adapted to receive algae discharged from the discharge end of the salvage mechanism (2). A filter screen (4) is provided inside the dehydration chamber (3). A pressing mechanism (5) is provided above the filter screen (4) inside the dehydration chamber (3). The pressing mechanism (5) is adapted to squeeze the algae inside the dehydration chamber (3). A liquid storage chamber (6) is constructed below the filter screen (4) inside the dehydration chamber (3) so that the filtrate flows through the filter screen (4) into the liquid storage chamber (6). A storage chamber (7) is connected to the discharge port of the dehydration chamber (3).

2. The water algae removal device according to claim 1, characterized in that: The pressing mechanism (5) includes a spiral filter press mechanism, a plate and frame filter press mechanism, or an eccentric roller filter press mechanism.

3. The water algae removal device according to claim 1, characterized in that: The liquid storage chamber (6) is divided into an inlet zone (8), a coagulation-flocculation zone (9), an air flotation zone (10), and a clear liquid zone (11) distributed in sequence.

4. The water algae removal device according to claim 3, characterized in that: A first reflux pump (12) is provided at the bottom of the flotation zone (10), and the first reflux pump (12) is used to pump the sludge at the bottom of the flotation zone (10) into the storage chamber (7).

5. The water algae removal device according to claim 3, characterized in that: A temporary storage hopper (13) is provided on the side of the flotation zone (10), and a slag scraping mechanism (14) is provided on the top of the flotation zone (10). The slag scraping mechanism (14) is used to scrape the slag on the top of the flotation zone (10) into the temporary storage hopper (13).

6. The water algae removal device according to claim 5, characterized in that: A second reflux pump (15) is provided at the bottom of the temporary storage hopper (13), which is used to pump the scum in the temporary storage hopper (13) into the storage chamber (7).

7. The water algae removal device according to claim 3, characterized in that: A third reflux pump (16) is provided at the bottom of the clear liquid zone (11), and the third reflux pump (16) is used to pump the clear liquid in the clear liquid zone (11) to the outside of the hull (1).

8. The water algae removal device according to any one of claims 1-7, characterized in that: The salvage mechanism (2) includes a rotatable material collection cylinder (17).

9. The water algae removal device according to claim 8, characterized in that: The collecting cylinder (17) includes a frame (18) and a plurality of collecting plates (19) arranged circumferentially on the frame (18). The collecting plates (19) are rotatably arranged on the frame (18). An elastic reset member (20) is connected between the rotating shaft of the collecting plate (19) and the frame (18). In the natural state of the collecting plates (19), the plurality of collecting plates (19) are sequentially spliced ​​circumferentially. The collecting cylinder (17) is defined circumferentially by a sequentially distributed lifting area (21), unloading area (22), and water inlet area (23). The mounting base of the collecting cylinder (17) is provided with a first arc-shaped rack (24), which is located at the end of the water inlet area (23); The mounting base of the collecting cylinder (17) is provided with a second arc-shaped rack (25), which extends from the end of the water inlet area (23) to the unloading area (22). The material collection plate (19) has a first gear (26) and a second gear (27) arranged sequentially along the axial direction on its rotating shaft. The first gear (26) and the second gear (27) are located radially between the first arc-shaped rack (24) and the second arc-shaped rack (25). As the collecting cylinder (17) rotates, the first gear (26) can mesh with the first arc-shaped rack (24) and cause the collecting plate (19) to flip to a horizontal position, and the second gear (27) can mesh with the second arc-shaped rack (25) and maintain the horizontal position of the collecting plate (19).

10. The water algae removal device according to claim 9, characterized in that: The aggregate plate (19) includes a frame (28) and a mesh (29) that is axially movable within the frame (28). A through-hole (30) is provided on the side wall of the frame (28), and a cutting tooth (31) extending out of the through-hole (30) is provided on the side wall of the mesh (29). The end face of the frame (18) is provided with a plurality of driving protrusions (32), which are circumferentially surrounding the rotating shaft of the collecting plate (19). The end of the mesh (29) is provided with a driving shaft (33), and the end of the driving shaft (33) abuts against the driving protrusions (32).

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