Red tide treatment ship and using method thereof

Abstract

The invention discloses a red tide treatment ship and a using method thereof, and relates to the field of red tide treatment, the red tide treatment ship comprises a ship body, a seawater valve box, a front sub-bin, a middle sub-bin and a rear sub-bin are arranged in the ship body, a water inlet is formed in the bottom of the seawater valve box, a control switch and a feeding motor are arranged between the seawater valve box and the front sub-bin, and a stirrer is arranged in the middle sub-bin; the ship body is provided with an upper water outlet pipe and a lower water outlet pipe, the end, away from the rear sub-bin, of the upper water outlet pipe extends upwards, a drainage pump is arranged at the top of the upper water outlet pipe, a guide pipe is arranged at the bottom of the ship body, and a propeller is arranged in the guide pipe. An upper switch and a lower switch are respectively arranged on the upper water outlet pipe and the lower water outlet pipe; and a turbidimeter for detecting the concentration is arranged in the neutron bin. The method is better suitable for red tide treatment in different time periods, and the red tide treatment effect is improved.

Description

Technical Field

[0001] This application relates to the field of red tide control, and in particular to a red tide control ship and its usage method. Background Art

[0002] Currently, red tide is a phenomenon caused by harmful algae in the ocean, usually occurring in seawater. These harmful algae reproduce rapidly under suitable environmental conditions, resulting in abnormally high concentrations of algae in the water area. These algae usually produce toxins, which pose hazards to marine life and human health.

[0003] In the prior art, a Chinese patent with the patent number CN201611163503.6, an apparatus for controlling red tide using modified clay, includes a power system, a screw conveyor storage bin, a mixed flow system, a high-pressure spraying system, and a central control system. The high-pressure spraying system pressurizes the matured modified clay suspension and sprays it on the surface of the red tide water body in a programmed manner.

[0004] Regarding the above-mentioned prior patent, for example, Prorocentrum donghaiense is the main dominant red tide algal species in the East China Sea of our country. In addition to the seasonal vertical migration phenomenon, it also has the habit of diurnal vertical migration: at noon, it is in the surface water layer, at night, it is in the lower water layer, and before dawn, individuals start to migrate upward from the middle and lower layers and gather at the seawater surface around 14:30. The downward migration at night almost depletes the oxygen in the lower water layer, so the damage to fisheries and the ecosystem is also more significant. Before the red tide breaks out, Prorocentrum donghaiense gathers in large numbers in the middle layer, and the cell abundance in the middle layer is generally one or two orders of magnitude higher than that in the surface layer; when the red tide breaks out, the vertical distribution of cell abundance is just the opposite, and the cell abundance in the surface layer is one to two orders of magnitude higher than that in the middle layer. In the prior art, spraying the modified clay suspension through the high-pressure spraying system is insufficient for controlling red tide only by spraying at the top because the position of the red tide in the water body is changing, and there is an urgent need for improvement. Summary of the Invention

[0005] In order to better apply to the control of red tide at different time periods and improve the control effect of red tide, this application provides a red tide control ship and its usage method.

[0006] A red tide control ship and its usage method provided by this application adopt the following technical solutions:

[0007] It includes a hull. Inside the hull, there are successively arranged a seawater valve box, a front sub-compartment, a middle sub-compartment and a rear sub-compartment that are interconnected. At the bottom of the seawater valve box, there is a water inlet communicating with the seawater. Between the seawater valve box and the front sub-compartment, there are a control switch and a feeding motor for pumping seawater. Inside the middle sub-compartment, there is a stirrer for mixing modified clay. At the top of the middle sub-compartment, there is a feeding port. Between the middle sub-compartment and the front sub-compartment and the rear sub-compartment respectively, there are a front switching device and a rear switching device for opening and closing. On the hull, there are an upper water outlet pipe and a lower water outlet pipe communicating with the rear sub-compartment. The end of the upper water outlet pipe far from the rear sub-compartment extends upward. At the top of the upper water outlet pipe, there is a drainage pump. At the bottom of the hull, there is a conduit. Inside the conduit, there is a propeller. The end of the lower water outlet pipe far from the rear sub-compartment communicates with the inner cavity of the conduit. On the upper water outlet pipe and the lower water outlet pipe respectively, there are an upper switch and a lower switch. Inside the middle sub-compartment, there is a turbidimeter for detecting the concentration.

[0008] By adopting the above technical solution, during operation, open the front switching device and the feeding motor, so that seawater can be injected into the middle sub-compartment. Inject modified clay through the feeding port, and then use the stirrer to fully mix the seawater and the modified clay to form a mixed liquid. When the water level in the middle sub-compartment reaches the predetermined height, close the front switching device and the feeding motor, read the value of the turbidimeter. After the concentration of the mixed liquid meets the requirements, then discharge it. During the day, close the lower water outlet pipe, open the upper water outlet pipe and the drainage pump to spray the mixed liquid onto the surface of the red tide. During the night or during the budding period of the red tide, close the upper water outlet pipe, open the lower water outlet pipe, and the propeller makes the liquid in the conduit flow rapidly. Under the action of the Venturi tube effect, the lower water outlet pipe can suck the mixed liquid and cooperate with the propeller to discharge the mixed liquid. With such a design, targeted treatment can be carried out at different times, which is better applicable to the treatment of red tide in different time periods and improves the treatment effect of red tide.

[0009] Preferably, there is a steering paddle on the hull. The conduit is fixed to the end of the steering paddle far from the hull. On the hull, there is an electro-hydraulic push rod for controlling the steering paddle, and the electro-hydraulic push rod is used to control the opening direction of the conduit.

[0010] By adopting the above technical solution, the opening direction of the electro-hydraulic push rod can be controlled by using the electro-hydraulic push rod. If the depth of the propeller is lower than the high-density area of Prorocentrum donghaiense under water, then tilt the steering paddle backward. If the depth of the propeller is higher than the high-density area of Prorocentrum donghaiense under water, then tilt the steering paddle forward, so that the mixed liquid can act more accurately on the high-density area of the algae.

[0011] Preferably, the control switch includes a U-shaped connecting pipe rotatably arranged between the seawater valve box and the front sub-compartment. A controller for controlling the rotation of the U-shaped connecting pipe is arranged on the hull. When the U-shaped connecting pipe rotates to the lower part, the seawater valve box is communicated with the front sub-compartment. When the U-shaped connecting pipe rotates to the upper part, the upper part of the U-shaped connecting pipe is higher than the water surface, and the seawater valve box is closed and communicated with the front sub-compartment.

[0012] By adopting the above technical solution, using the U-shaped connecting pipe can achieve the purpose of controlling the seawater valve box and the front sub-compartment. After the top of the U-shaped connecting pipe is separated from the water surface, the seawater is not easy to flow, improving the convenience of controlling the seawater valve box and the front sub-compartment.

[0013] Preferably, the front switch device includes a front opening formed between the front sub-compartment and the middle sub-compartment. A front sliding seat is arranged on the side wall of the front sub-compartment. A front sliding cavity is formed in the front sliding seat. A front sealing plate for closing the front opening is slidably arranged in the front sliding cavity. A front electromagnet for attracting the front sealing plate to open the front opening is arranged at the bottom of the front sliding cavity. A front elastic member for pushing the front sealing plate to close the front opening is arranged in the front sliding cavity.

[0014] By adopting the above technical solution, during use, the front spring can be used to push the front sealing plate to close the front opening, improving the convenience of closing the front opening. Then, in cooperation with the use of the front electromagnet, the front sealing plate can be closed more quickly, improving the convenience of controlling the front sealing plate.

[0015] Preferably, the stirrer includes a rotating rod rotatably connected in the middle sub-compartment. A stirring drive motor for driving the rotation of the rotating rod is arranged on the hull. A plurality of stirring blades are arranged on the rotating rod, and the stirring blades are inclined.

[0016] By adopting the above technical solution, during use, through the inclined stirring blades, when stirring the mixed liquid, the rotating rod rotates forward, making the mixed liquid flow upward, so that a vortex can be formed, and the mixed liquid can be better mixed together. When the rear switch device opens the channel between the middle sub-compartment and the rear sub-compartment, the mixed liquid rotates in the reverse direction, making the liquid flow downward, so that the mixed liquid can be pushed into the rear sub-compartment more quickly, improving the convenience of discharging the mixed liquid.

[0017] Preferably, a switch ring is rotatably connected in the seawater valve box. A switch cavity is formed in the switch ring. The U-shaped connecting pipe is connected to the switch ring. The switch ring is composed of a filter plate and a sealing piece. A plurality of filter holes are formed in the filter plate. When the filter plate rotates to the water inlet, the seawater is filtered. When the sealing piece rotates to the water inlet, the water inlet is sealed.

[0018] By adopting the above technical solution, a U-shaped connecting pipe is connected to the switch ring, so that while controlling the protruding position of the U-shaped connecting pipe, the opening of the water inlet can be controlled. By closing the water inlet with a blocking piece, the resistance at the bottom of the hull can be reduced, the smoothness of the hull during sliding can be improved, and the filter plate can filter impurities in the seawater, reducing the entry of impurities into the device inside the hull, so that the seawater can be better treated inside the hull, improving the convenience of using the red tide treatment ship.

[0019] Preferably, a scraper is provided on the side wall of the water inlet, and the scraper abuts against the outer wall of the switch ring.

[0020] By adopting the above technical solution, when using the scraper, impurities adsorbed on the outer wall of the switch ring can be cleaned when the switch ring rotates, so that the blockage of the filter plate by impurities can be reduced, the smoothness of seawater entry can be improved, and the convenience of using the red tide treatment ship can be ensured.

[0021] Preferably, a collection groove is opened on the side wall of the rear sub-compartment, the bottom of the collection groove is communicated with the lower water outlet pipe, a filtering groove is opened on the upper side wall of the collection groove, a filter sheet is arranged in the filtering groove, and the upper water outlet pipe is communicated with the filtering groove.

[0022] By adopting the above technical solution, when using the upper water outlet pipe, the filtered impurities can stay in the collection groove, enabling the more convenient discharge of the mixed liquid; when using the lower water outlet pipe, since the Venturi tube principle is used to suck the mixed liquid, the mixed liquid and impurities can be discharged more conveniently.

[0023] Preferably, a cutting piece is provided on the side of the front sealing plate away from the front sliding seat, and the thickness of the cutting piece gradually decreases in the direction away from the front sealing plate.

[0024] In a second aspect, the present application provides a method for using a red tide treatment ship, adopting the following technical solution:

[0025] Preferably, in step one; inject seawater, the controller rotates the U-shaped connecting pipe downward, and under the action of the front switch device, the front sub-compartment is communicated with the middle sub-compartment, and seawater is pumped into the middle sub-compartment through the feeding motor;

[0026] In step two; stir and mix. After the middle sub-compartment is filled, inject modified clay through the feeding port, the stirrer stirs to form a mixed liquid, and the concentration of the mixed liquid is detected by a turbidimeter. When the concentration of the mixed liquid is low, add more modified clay, and when the concentration of the mixed liquid is high, inject seawater again;

[0027] In step three; discharge the mixed liquid. The mixed liquid flows from the middle sub-compartment into the rear sub-compartment;

[0028] During the day, close the lower outlet pipe, open the upper outlet pipe, and turn on the drainage pump to discharge the mixed liquid from the top of the hull.

[0029] At night, close the upper outlet pipe, open the lower outlet pipe, and draw the mixed liquid under the action of the propeller.

[0030] Step Four: Stop working. The controller rotates the U-shaped connecting pipe upward to reset it, and the front switch device and the rear switch device close the front and rear communication spaces of the neutron chamber.

[0031] By adopting the above technical solutions, during use, the position where the red tide exists in the seawater can be judged according to the actual time, and the seawater can be sprayed through the upper outlet pipe or the lower outlet pipe respectively, so that the mixed liquid can act on the red tide accurately, improving the effect of red tide treatment; and the treatment ship can operate day and night, improving the convenience of red tide treatment.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. Open the front switch device and the feeding motor, so that seawater can be injected into the neutron chamber, and modified clay can be injected through the feeding port. Then, use a stirrer to fully mix the seawater and the modified clay to form a mixed liquid. When the water level in the neutron chamber reaches the predetermined height, close the front switch device and the feeding motor, read the value of the turbidimeter. After the concentration of the mixed liquid meets the requirements, then discharge it. During the day, close the lower outlet pipe, open the upper outlet pipe and the drainage pump to spray the mixed liquid onto the surface of the red tide; during the night or during the budding period of the red tide, close the upper outlet pipe, open the lower outlet pipe, and the propeller makes the liquid in the conduit flow rapidly. Under the action of the Venturi tube effect, the lower outlet pipe can suck the mixed liquid and cooperate with the propeller to discharge the mixed liquid. With such a design, targeted treatment can be carried out at different times, better applicable to the treatment of red tide in different time periods, and improving the effect of red tide treatment.

[0034] 2. The electro-hydraulic push rod can be used to control the opening direction of the electro-hydraulic push rod. If the depth of the propeller is lower than the high-density area of Prorocentrum donghaiense under water, the rudder paddle is tilted backward. If the depth of the propeller is higher than the high-density area of Prorocentrum donghaiense under water, the rudder paddle is tilted forward, so that the mixed liquid can act more accurately on the high-density area of the algae.

[0035] 3. Connect the U-shaped connecting pipe with the switch ring, so that while controlling the protruding position of the U-shaped connecting pipe, the opening of the water inlet can be controlled. By closing the water inlet with the blocking piece, the resistance at the bottom of the hull can be reduced, improving the smoothness of the hull when sliding. And the filter plate can filter the impurities in the seawater, reducing the impurities from entering the device inside the hull, so that the seawater can be better treated inside the hull, improving the convenience of using the red tide treatment ship. Description of the Drawings

[0036] Figure 1 This is a schematic diagram of the overall structure of the red tide treatment ship and its usage method in Embodiment 1 of the present application;

[0037] Figure 2 This is a schematic diagram mainly showing the duct structure in Embodiment 1 of the present application;

[0038] Figure 3 is Figure 1 an enlarged schematic diagram of part A in;

[0039] Figure 4 This is a cross-sectional view mainly showing the seawater valve box structure in Embodiment 2 of the present application;

[0040] Figure 5 This is a cross-sectional view mainly showing the collection tank structure in Embodiment 2 of the present application;

[0041] Figure 6 This is a cross-sectional view mainly showing the cutting blade structure in Embodiment 2 of the present application;

[0042] Reference signs: 1, hull; 2, winch; 3, neutron bin; 4, feed inlet; 5, drainage pump; 6, nozzle; 7, upper switch; 8, lower switch; 9, electro-hydraulic push rod; 10, rudder propeller; 11, seawater valve box; 12, U-shaped connecting pipe; 13, front sub-bin; 14, stirring blade; 15, rear sub-bin; 16, upper water outlet pipe; 17, lower water outlet pipe; 18, duct; 19, propeller; 20, rotating rod; 21, drive motor; 22, avoidance groove; 23, rear electromagnet; 24, rear sliding seat; 25, rear elastic member; 26, rear sliding cavity; 27, rear sealing plate; 28, front sealing plate; 29, feed motor; 30, front elastic member; 31, front sliding seat; 32, front sliding cavity; 33, front electromagnet; 34, water inlet; 35, turbidimeter; 36, counterweight; 37, scraper; 38, closing piece; 39, filter hole; 40, filter plate; 41, filter tank; 42, filter piece; 43, collection tank; 44, cutting blade. Detailed implementation manners

[0043] The following further elaborates on the present application in conjunction with the attached Figure 1 - Figure 6 drawings.

[0044] Embodiment 1 of the present application discloses a red tide treatment ship and its usage method.

[0045] Embodiment 1

[0046] Refer to Figure 1, A red tide treatment ship, including a hull 1. Inside the hull 1, a seawater valve box 11, a front sub-compartment 13, a middle sub-compartment 3, and a rear sub-compartment 15 are sequentially installed from the bow to the stern and are interconnected. At the bottom of the seawater valve box 11, a water inlet 34 communicating with the seawater is provided. A control switch and a feeding motor 29 for pumping seawater are installed between the seawater valve box 11 and the front sub-compartment 13. Inside the middle sub-compartment 3, a stirrer for mixing modified clay is installed. At the top of the middle sub-compartment 3, a feeding port 4 is provided, and the feeding port 4 is in a horn shape, which can more conveniently inject the modified clay. A front switch device and a rear switch device for switching are respectively connected between the middle sub-compartment 3 and the front sub-compartment 13 and the rear sub-compartment 15. By controlling the switch between the middle sub-compartment 3 and the outside through the front switch device and the rear switch device, the modified clay can be more conveniently mixed. On the hull 1, an upper water outlet pipe 16 and a lower water outlet pipe 17 communicating with the rear sub-compartment 15 are fixed. One end of the upper water outlet pipe 16 far from the rear sub-compartment 15 extends upward. At the top of the upper water outlet pipe 16, a drainage pump 5 is provided. One end of the drainage pump 5 far from the upper water outlet pipe 16 is provided with a nozzle 6, and the mixed liquid is sprayed through the nozzle 6. At the bottom of the hull 1, a conduit 18 is installed. Inside the conduit 18, a propeller 19 is installed, and the propeller 19 is used to provide the power for the hull 1 to move forward. One end of the lower water outlet pipe 17 far from the rear sub-compartment 15 communicates with the inner cavity of the conduit 18. An upper switch 7 and a lower switch 8 are respectively installed on the upper water outlet pipe 16 and the lower water outlet pipe 17. Inside the middle sub-compartment 3, a turbidimeter 35 for detecting the concentration is installed. Use the stirrer to fully mix the seawater and the modified clay to form a mixed liquid. When the water level in the middle sub-compartment 3 reaches a predetermined height, close the front switch device and the feeding motor 29, read the value of the turbidimeter 35. After the concentration of the mixed liquid meets the requirements, then discharge it; during the day, close the lower water outlet pipe 17, open the upper water outlet pipe 16 and the drainage pump 5 to spray the mixed liquid onto the surface of the red tide; during the night or during the budding period of the red tide, close the upper water outlet pipe 16 and open the lower water outlet pipe 17 to discharge the mixed liquid to the bottom of the sea surface.

[0047] A steering propeller 10 is installed on the hull 1. The steering propeller 10 is fixed to the hull 1 by a ball connection method. The conduit 18 is fixed to one end of the steering propeller 10 far from the hull 1, so that the forward direction of the hull 1 can be more conveniently controlled. An electro-hydraulic push rod 9 for controlling the steering propeller 10 is installed on the hull 1. The electro-hydraulic push rod 9 is used to control the opening direction of the conduit 18. An avoidance groove 22 is provided on the outer wall of the conduit 18. The avoidance groove 22 is in an elliptical shape. The lower water outlet pipe 17 is inserted into the conduit 18 through the avoidance groove 22, so that the lower water outlet pipe 17 can be more conveniently connected to the conduit 18.

[0048] The control switch includes a U-shaped connecting pipe 12 rotatably connected between the seawater valve box 11 and the front sub-compartment 13. A controller for controlling the rotation of the U-shaped connecting pipe 12 is installed on the hull 1. The controller includes a winch 2 installed on the hull 1. A counterweight 36 is connected to the winch 2, and the counterweight 36 is fixed to the U-shaped connecting pipe 12. When the winch 2 pays out, under the action of gravity, the top position of the U-shaped connecting pipe 12 can be rotated downward, so as to achieve the function of controlling the rotation of the U-shaped connecting pipe 12. When the U-shaped connecting pipe 12 rotates to the lower part, the seawater valve box 11 is connected to the front sub-compartment 13, facilitating the entry of seawater; when the U-shaped connecting pipe 12 rotates to the upper part, the upper part of the U-shaped connecting pipe 12 is higher than the water surface, and the seawater valve box 11 is disconnected from the front sub-compartment 13, so as to better control the connection between the internal structure and seawater and improve the convenience of using the red tide control ship. The feeding motor 29 is a water pump, and the water pump is installed on the U-shaped connecting pipe 12, so as to achieve the purpose of pumping seawater.

[0049] The front switch device includes a front opening formed between the front sub-compartment 13 and the middle sub-compartment 3. The front opening is a rectangular groove. A front sliding seat 31 is fixed to the side wall of the front sub-compartment 13. A front sliding cavity 32 is formed in the front sliding seat 31. A front sealing plate 28 for closing the front opening is slidably connected in the front sliding cavity 32. A front electromagnet 33 for attracting the front sealing plate 28 to open the front opening is fixed to the bottom of the front sliding cavity 32. A front elastic member 30 for pushing the front sealing plate 28 to close the front opening is installed in the front sliding cavity 32. Thus, the connection between the front sub-compartment 13 and the middle sub-compartment 3 can be controlled more conveniently, improving the convenience of controlling the seawater flow.

[0050] The rear switch device includes a rear opening formed between the middle sub-compartment 3 and the rear sub-compartment 15. The rear opening is a rectangular groove. A rear sliding seat 24 is fixed to the side wall of the rear sub-compartment 15. A rear sliding cavity 26 is formed in the rear sliding seat 24. A rear sealing plate 27 for closing the rear opening is slidably connected in the rear sliding cavity 26. A rear electromagnet 23 for attracting the rear sealing plate 27 to open the rear opening is fixed to the bottom of the rear sliding cavity 26. A rear elastic member 25 for pushing the rear sealing plate 27 to close the rear opening is installed in the rear sliding cavity 26, so as to conveniently disconnect the connection between the rear sub-compartment 15 and the middle sub-compartment 3.

[0051] The agitator includes a rotating rod 20 rotatably connected inside the neutron bin 3. A driving motor 21 for driving the rotation of the rotating rod 20 is installed on the hull 1. A plurality of stirring blades 14 are installed on the rotating rod 20, and the stirring blades 14 are inclined. The inclined stirring blades 14 can make the mixed liquid be stirred more fully. When stirring the mixed liquid, the rotating rod 20 rotates forward to make the mixed liquid flow upward, thereby forming a vortex to better mix the mixed liquid together. When the rear switch device opens the channel between the neutron bin 3 and the rear bin 15, the mixed liquid rotates in the reverse direction and the liquid flows downward, thereby pushing the mixed liquid into the rear bin 15 more quickly and improving the convenience of discharging the mixed liquid.

[0052] Embodiment 2

[0053] Referring to Figure 5 , the difference between this embodiment and Embodiment 1 is that a switch ring is rotatably connected inside the seawater valve box 11, a switch cavity is formed inside the switch ring, the switch cavity is cylindrical, and the U-shaped connecting pipe 12 is connected to the switch ring to control the rotation of the switch ring through the U-shaped connecting pipe 12. The switch ring is composed of a filter plate 40 and a closing piece 38. A plurality of filter holes 39 are opened on the filter plate 40. When the filter plate 40 rotates to the water inlet 34, the seawater is filtered, and when the closing piece 38 rotates to the water inlet 34, the water inlet 34 is closed. Thus, the opening and closing of the water inlet 34 at the bottom of the hull 1 can be controlled more conveniently.

[0054] A scraping plate 37 is fixed on the side wall of the water inlet 34, and the scraping plate 37 abuts against the outer wall of the switch ring, so that the impurities adhering to the switch ring can be cleaned, the seawater can flow more smoothly, and the convenience of using the switch ring is improved.

[0055] A collecting groove 43 is formed on the side wall of the rear bin 15. The collecting groove 43 is an arc-shaped groove. The upper water outlet pipe 16 is installed at the top of the lower water outlet, and the lower water outlet pipe 17 is installed at the bottom of the rear bin 15. The bottom of the collecting groove 43 is communicated with the lower water outlet pipe 17, and a filtering groove 41 is formed on the upper side wall of the collecting groove 43. A filter sheet 42 is installed in the filtering groove 41, and the upper water outlet pipe 16 is communicated with the filtering groove 41, so that the mixed liquid can be discharged more conveniently. The arc-shaped groove can make the remaining impurities be discharged more smoothly, and improve the convenience of impurity filtering and cleaning.

[0056] A cutting piece 44 is integrally formed on the side of the front sealing plate 28 away from the sliding seat, and the thickness of the cutting piece 44 gradually decreases along the direction away from the front sealing plate 28. By using the cutting plate, when encountering impurities, due to the pointed design of the cutting piece 44, the front opening can be closed more conveniently, and the convenience of blocking the front opening is improved.

[0057] Embodiment 3

[0058] A method for using a red tide control ship includes the following steps:

[0059] Step 1: Inject seawater. The winch 2 cooperates with the use of the counterweight 36 to control the downward rotation of the U-shaped connecting pipe 12, and under the action of the front electromagnet 33, control the opening of the front sealing plate 28. Under the action of the feeding motor 29, pump the seawater into the neutron chamber 3.

[0060] Step 2: Stir and mix. After the neutron chamber 3 is filled, inject the modified clay through the feeding port 4, and stir it through the stirrer to form a mixed liquid. Detect the concentration of the mixed liquid through the turbidimeter 35.

[0061] 1. If the concentration of the mixed liquid is lower than the predetermined interval value, then inject the modified clay again until the concentration is within the predetermined interval.

[0062] 2. If the concentration is higher than the predetermined interval value, then open the front sealing plate 28, inject water into the neutron chamber until the concentration is within the predetermined interval, and then close the front sealing plate 28.

[0063] 3. When the concentration is within the predetermined interval, keep the feeding motor 29 and the front sealing plate 28 in the closed state.

[0064] Step 3: Discharge the mixed liquid. Open the rear sealing plate 27 to inject the mixed liquid into the rear chamber 15.

[0065] 1. During the day, close the lower water outlet pipe 17, open the upper water outlet pipe 16, the drainage pump 5 and the nozzle, and spray the mixed liquid onto the surface of the red tide.

[0066] 2. During the night, or during the budding period of the red tide, close the upper water outlet pipe 16 and open the lower water outlet pipe 17.

[0067] First, if the depth of the propeller 19 is lower than the high-density area of Prorocentrum donghaiense underwater, then tilt the rudder propeller 10 backward, then the propulsion of the propeller 19 makes the mixed liquid flow obliquely upward and / or adjust the ship's ballast, making the ship slightly trim by the bow. It can also make the meandering flow of the propeller 19 push the mixed liquid to flow obliquely upward.

[0068] Second, if the depth of the propeller 19 is higher than the high-density area of Prorocentrum donghaiense underwater, then tilt the rudder propeller 10 forward, then the wake flow of the propeller 19 makes the mixed liquid flow obliquely downward and / or adjust the ship's ballast, making the ship slightly trim by the stern. It can also make the wake flow of the propeller 19 push the mixed liquid to flow obliquely downward.

[0069] Third, if the depth of the propeller 19 is at the high-density area of Prorocentrum donghaiense at night, then keep the rudder propeller 10 horizontal, then the wake flow of the propeller 19 makes the mixed liquid flow horizontally and / or adjust the ship's ballast, making the ship float. It can also make the wake flow of the propeller 19 push the mixed liquid to flow horizontally.

[0070] Step 4: Stop working. After the operation is completed, start the hoist 2 to return the U-shaped connecting pipe 12 to its original position. Since the U-shaped connecting pipe 12 is higher than the sea surface, the water in the sea water valve box 11 will not flow back into the mixing tank, and the electromagnet is in a power-off and demagnetized state, so that the front sealing plate 28 and the rear sealing plate 27 close the front and rear communication parts of the neutron chamber 3.

[0071] The advantages of Embodiment 3 are as follows: With such a design, targeted treatment can be carried out at different times, which is more suitable for the treatment of red tides in different time periods and improves the treatment effect of red tides; by using the electro-hydraulic push rod 9, the opening direction of the electro-hydraulic push rod 9 can be controlled. If the depth of the propeller 19 is lower than the high-density area of Prorocentrum donghaiense under water, the rudder propeller 10 is tilted backward. If the depth of the propeller 19 is higher than the high-density area of Prorocentrum donghaiense under water, the rudder propeller 10 is tilted forward, so that the mixed liquid can act more accurately on the high-density area of the algae.

[0072] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A red tide treatment vessel, characterized in that: It includes a hull (1), inside which there are successively arranged a seawater valve box (11), a front sub-compartment (13), a middle sub-compartment (3) and a rear sub-compartment (15) that are interconnected. At the bottom of the seawater valve box (11), there is a water inlet (34) communicating with the seawater. Between the seawater valve box (11) and the front sub-compartment (13), there are a control switch and a feeding motor (29) for pumping seawater. Inside the middle sub-compartment (3), there is a stirrer for mixing modified clay. At the top of the middle sub-compartment (3), there is a feeding port (4). Between the middle sub-compartment (3) and the front sub-compartment (13) and the rear sub-compartment (15) respectively, there are a front switching device and a rear switching device for opening and closing. On the hull (1), there are an upper water outlet pipe (16) and a lower water outlet pipe (17) communicating with the rear sub-compartment (15). The end of the upper water outlet pipe (16) far from the rear sub-compartment (15) extends upward. At the top of the upper water outlet pipe (16), there is a drainage pump (5). At the bottom of the hull (1), there is a conduit (18). Inside the conduit (18), there is a propeller (19). The end of the lower water outlet pipe (17) far from the rear sub-compartment (15) is communicated with the inner cavity of the conduit (18). On the upper water outlet pipe (16) and the lower water outlet pipe (17), there are an upper switch (7) and a lower switch (8) respectively. Inside the middle sub-compartment (3), there is a turbidimeter (35) for detecting concentration.

2. The red tide control ship according to claim 1, characterized in that: On the hull (1), there is a rudder propeller (10). The conduit (18) is fixed to the end of the rudder propeller (10) far from the hull (1). On the hull (1), there is an electro-hydraulic push rod (9) for controlling the rudder propeller (10), and the electro-hydraulic push rod (9) is used to control the opening direction of the conduit (18).

3. The red tide control ship according to claim 1, characterized in that: The control switch includes a U-shaped connecting pipe (12) rotatably arranged between the seawater valve box (11) and the front sub-compartment (13). On the hull (1), there is a controller for controlling the rotation of the U-shaped connecting pipe (12). When the U-shaped connecting pipe (12) rotates to the lower part, the seawater valve box (11) is communicated with the front sub-compartment (13). When the U-shaped connecting pipe (12) rotates to the upper part, the upper part of the U-shaped connecting pipe (12) is higher than the water surface, and the seawater valve box (11) and the front sub-compartment (13) are closed and not communicated.

4. The red tide control ship according to claim 1, characterized in that: The front switching device includes a front opening opened between the front sub-compartment (13) and the middle sub-compartment (3). On the side wall of the front sub-compartment (13), there is a front sliding seat (31). Inside the front sliding seat (31), there is a front sliding cavity (32). Inside the front sliding cavity (32), there is a front sealing plate (28) slidably arranged for closing the front opening. At the bottom of the front sliding cavity (32), there is a front electromagnet (33) for attracting the front sealing plate (28) to open the front opening. Inside the front sliding cavity (32), there is a front elastic member (30) for pushing the front sealing plate (28) to close the front opening.

5. The red tide control ship according to claim 1, characterized in that: The agitator includes a rotating rod (20) rotatably connected inside the neutron bin (3). A driving motor (21) for driving the rotation of the rotating rod (20) is provided on the hull (1). A plurality of stirring vanes (14) are provided on the rotating rod (20), and the stirring vanes (14) are inclined.

6. The red tide control ship according to claim 3, characterized in that: A switch ring is rotatably connected inside the seawater valve box (11). A switch cavity is formed inside the switch ring. The U-shaped connecting pipe (12) is connected to the switch ring. The switch ring is composed of a filter plate (40) and a closing piece (38). A plurality of filter holes (39) are formed on the filter plate (40). When the filter plate (40) rotates to the water inlet (34), seawater is filtered. When the closing piece (38) rotates to the water inlet (34), the water inlet (34) is closed.

7. The red tide control ship according to claim 6, characterized in that: A scraping plate (37) is provided on the side wall of the water inlet (34), and the scraping plate (37) abuts against the outer wall of the switch ring.

8. A red tide control ship according to claim 1, characterized in that: A collection groove (43) is formed on the side wall of the rear bin (15). The bottom of the collection groove (43) is communicated with the lower water outlet pipe (17). A filtering groove (41) is formed on the upper side wall of the collection groove (43). A filtering sheet (42) is provided inside the filtering groove (41). The upper water outlet pipe (16) is communicated with the filtering groove (41).

9. The red tide control ship according to claim 4, wherein: A cutting piece (44) is provided on one side of the front sealing plate (28) away from the front sliding seat (31). The thickness of the cutting piece (44) gradually decreases along the direction away from the front sealing plate (28).

10. A method for using a red tide treatment ship, which uses a red tide treatment ship as described in any one of claims 1-9, characterized in that, The specific steps are as follows; Step 1; Inject seawater. The controller rotates the U-shaped connecting pipe (12) downward, and under the action of the front switch device, the front bin (13) is communicated with the neutron bin (3), and seawater is pumped into the neutron bin (3) through the feeding motor (29). Step 2; Stir and mix. After the neutron bin (3) is filled, modified clay is injected through the feeding port (4). The agitator stirs to form a mixed liquid. The concentration of the mixed liquid is detected by a turbidimeter (35). When the concentration of the mixed liquid is low, more modified clay is added. When the concentration of the mixed liquid is high, seawater is injected again. Step 3; Discharge the mixed liquid. The mixed liquid flows from the neutron bin (3) into the rear bin (15). During the day, close the lower water outlet pipe (17), open the upper water outlet pipe (16), and turn on the drainage pump (5) to discharge the mixed liquid from the top of the hull (1). During the night, close the upper water outlet pipe (16), open the lower water outlet pipe (17), and extract the mixed liquid under the action of the propeller (19). Step 4; Stop working. The controller rotates the U-shaped connecting pipe (12) upward to reset, and the front switch device and the rear switch device close the front and rear communication spaces of the neutron bin (3).

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