Composite module water purifying device

Abstract

The invention discloses a composite module water purification device, which relates to the technical field of water quality treatment, and comprises a base, a fresh water waste discharge box fixedly mounted in the middle of a left mounting rack, a seawater waste discharge box fixedly mounted in the middle of a right mounting rack, and a fresh water purification box fixedly mounted at the top end of the fresh water waste discharge box, the top of the seawater waste discharge box is fixedly provided with a fresh water purification box, the top of the seawater waste discharge box is fixedly provided with a seawater purification box, the middle parts of the bottom ends of the interiors of the fresh water purification box and the seawater purification box are fixedly provided with guide plates, and the tops of the two guide plates are movably provided with movable bottom plates. The protection liquid in the protection liquid storage box is discharged downwards by using an electromagnetic valve to soak and maintain the ceramic composite membrane and the reverse osmosis membrane, so that the concept of double-station operation is realized, and the water purification can be continuously carried out; and the situation that the working efficiency is reduced due to purification work pause caused by shutdown during maintenance is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and specifically to a composite module water purification device. Background Art

[0002] With the development of industrialization, fresh water resources are increasingly depleted, and a large amount of fresh water resources are polluted. In order to further strengthen the implementation of industrial water conservation policies, the state encourages large and medium-sized enterprises to achieve water resource regeneration and recycling as much as possible. Sometimes, better water quality is required in industrial production. The up-to-standard discharge water quality obtained only from sewage treatment is far from enough, and the quality of recycled water needs to be further improved. For this reason, a Chinese patent discloses a water purification device with an application number of 201911143749.0. This patent can remove refractory organic matter in wastewater through the combined action of ceramic flat membrane sheets and activated carbon, not only improving the water quality, but also reducing the usage amount of activated carbon. However, currently, the filtration membrane (ceramic flat membrane sheet) applied in the water purification process of this patent needs to be maintained to a certain extent, and the water resource purification needs to be stopped for maintenance. The shutdown will waste working time and result in low purification efficiency. Therefore, the present invention provides a composite module water purification device to meet people's needs. Summary of the Invention

[0003] The present invention provides a composite module water purification device, which can effectively solve the problem that the filtration membrane (ceramic flat membrane sheet) applied in the water purification process needs to be maintained to a certain extent, and the water resource purification needs to be stopped for maintenance. The shutdown will waste working time and result in low purification efficiency as mentioned in the above background art.

[0004] To achieve the above object, the present invention provides the following technical solution: A composite module water purification device, including a base, a left mounting frame and a right mounting frame are installed at the top of the base, and a composite water purification mechanism is installed between the middle parts of the left mounting frame and the right mounting frame. The composite water purification mechanism includes a fresh water waste discharge tank and a seawater purification tank. A fresh water waste discharge tank is installed in the middle of the left mounting frame. Guide plates are installed at the middle parts of the bottoms inside both the fresh water purification tank and the seawater purification tank. Moving bottom plates are movably installed at the tops of the two guide plates. Ceramic composite membranes are symmetrically installed at the top of one moving bottom plate, and reverse osmosis membranes are symmetrically installed at the top of the other moving bottom plate. Metal strip plates are installed between the tops of the two ceramic composite membranes and between the tops of the two reverse osmosis membranes. Guide strip holes are provided at the tops of the fresh water purification tank and the sea water purification tank. Sealing frames are installed at the tops of the fresh water purification tank and the sea water purification tank. A strip-shaped electromagnetic block is movably installed in the middle of the top of the sealing frame. Drive motors are installed at one end of the tops of the fresh water purification tank and the sea water purification tank. Output shafts of the two drive motors are both connected with adjusting screws, and moving blocks are installed in the middle of the two adjusting screws.

[0005] According to the above technical solution, the sum of the widths of the two ceramic composite membranes and the sum of the widths of the two reverse osmosis membranes are both equal to the length of the moving bottom plate. The two ceramic composite membranes are closely attached to each other, and the two reverse osmosis membranes are closely attached to each other.

[0006] According to the above technical solution, the metal strip plate is movably embedded inside the guide strip hole. The sealing frame covers the top of the metal strip plate. The positions of the strip-shaped electromagnetic block and the metal strip plate correspond to each other. The adjusting screw and the moving block are connected by threads. The bottom end of the moving block is fixedly connected to the top end of the strip-shaped electromagnetic block.

[0007] According to the above technical solution, a sea water waste discharge tank is installed in the middle of the right mounting frame. The fresh water purification tank is installed at the top of the fresh water waste discharge tank. The sea water purification tank is installed at the top of the sea water waste discharge tank; Sealing partitions are symmetrically and fixedly installed in the middle of the tops of the two moving bottom plates. Left partitions are symmetrically installed at one end of the tops of the two moving bottom plates. Right partitions are symmetrically installed at one end of the tops of the two moving bottom plates away from the left partitions; Sealing grooves are provided at the positions on one side of the guide strip holes at the tops of the fresh water purification tank and the sea water purification tank. Sealing gaskets are fixedly connected to the edges of the bottoms of the two sealing frames. Locking bolts are fixedly installed on both sides of the two sealing frames; Protecting liquid storage tanks are symmetrically and fixedly installed at both ends of the tops of the fresh water purification tank and the sea water purification tank. Solenoid valves are fixedly installed at both ends of the bottom of the protecting liquid storage tank. The bottom ends of the solenoid valves are fixedly connected with infusion tubes. Discharge round holes are symmetrically provided at both ends of the moving bottom plate. Control valves are symmetrically and fixedly installed at both ends of the tops of the fresh water waste discharge tank and the sea water waste discharge tank; Inclined infusion tanks are symmetrically and fixedly installed at both ends of the tops of the fresh water purification tank and the sea water purification tank. Cleaning spray heads are evenly and obliquely installed at the bottom of the inclined infusion tanks. Connecting tubes are fixedly connected to the tops of the inclined infusion tanks. Liquid distribution tanks are fixedly installed in the middle of the tops of the fresh water purification tank and the sea water purification tank. Cleaning pumps are fixedly installed at the tops of the two liquid distribution tanks.

[0008] According to the above technical solution, a water pump is fixedly installed at the bottom end of the left mounting frame. One end of the water pump is fixedly connected to a water supply pipe. One end of the bottom of the fresh water purification tank is fixedly connected to a water delivery pipe. A water storage tank is fixedly installed at the middle part of the left mounting frame on one side of the fresh water waste discharge tank. A drain valve is fixedly installed at one end of the bottom of the water storage tank. The other end of the bottom of the water storage tank is fixedly connected to a transfer valve. A high-pressure pump is fixedly installed at the bottom end of the right mounting frame. One end of the high-pressure pump is fixedly connected to a high-pressure water pipe. The other end of the high-pressure pump is fixedly connected to a transfer pipeline. One end of the bottom of the sea water purification tank is fixedly connected to a discharge pipe.

[0009] According to the above technical solution, the sealing partition board, the left partition board and the right partition board are symmetrically distributed on both sides of the ceramic composite membrane and the reverse osmosis membrane, and are all in close contact with the ceramic composite membrane and the reverse osmosis membrane; The sealing gasket is embedded inside the sealing groove, and the sealing frame is fixedly connected to the fresh water purification tank and the sea water purification tank through locking bolts; The bottom end of the infusion pipe is connected to the top ends of the fresh water purification tank and the sea water purification tank. The positions of the discharge round holes and the control valves correspond to each other, and the connecting pipe is connected to the liquid diversion box.

[0010] According to the above technical solution, the top end of the water supply pipe is connected to one end of the fresh water purification tank. One end of the water delivery pipe is connected to the water storage tank. The transfer pipeline is connected to the transfer valve. The high-pressure water pipe is connected to one end of the sea water purification tank.

[0011] According to the above technical solution, an environmental protection neutralization mechanism is installed in the middle of the sea water waste discharge tank; The environmental protection neutralization mechanism includes a rotating rod; A rotating rod is rotatably installed in the middle of the sea water waste discharge tank. Stirring blades are fixedly installed at equal intervals in the middle of the rotating rod. One end of the rotating rod is fixedly connected to a small transmission wheel. One end of an adjusting screw rod located at the top of the sea water purification tank is fixedly connected to a large transmission wheel. A transmission belt is sleeved between the middle parts of the small transmission wheel and the large transmission wheel. The other end of the rotating rod is fixedly installed with a rotating disc. Infusion inclined grooves are equidistantly arranged along the circumferential direction on the edge of the rotating disc. An alkaline solution storage tank is fixedly installed at one end of the top of the sea water waste discharge tank. One end of the bottom of the alkaline solution storage tank is fixedly connected to a delivery channel; A detection box is fixedly installed at one end of the middle part of the seawater waste discharge box, a guide frame is fixedly connected to the middle part of the top of the detection box, a lifting rod is movably installed in the middle part of the guide frame, a high-density polyethylene floating plate is fixedly connected to the bottom end of the lifting rod, a metal sheet is fixedly connected to the top of the lifting rod, a fixing frame is fixedly installed at the top of the seawater waste discharge box at a position corresponding to the detection box, an electromagnet is fixedly installed at the top of the fixing frame, a positioning frame is fixedly installed at one end of the detection box, a portable rangefinder is placed inside the positioning frame, and a positioning block is fixedly connected to one end of the metal sheet; A material guide inclined plate is fixedly installed in the middle of the alkaline solution storage box, a sealing rubber strip is fixedly connected to the bottom end of the material guide inclined plate, electric push rods are symmetrically fixedly installed in the alkaline solution storage box below the material guide inclined plate, an L-shaped control panel is fixedly connected between the ends of the two electric push rods, a sealing plate is fixedly installed in the alkaline solution storage box below the electric push rod, a liquid level sensor is fixedly installed at one end of the alkaline solution storage box, and an alarm is fixedly installed on the top of the alkaline solution storage box.

[0012] According to the above technical solution, the bottom of the conveying channel is inserted into the interior of the seawater waste discharge box, and the bottom end of the conveying channel is arc-shaped and closely attached to the top end of the rotating disc; The detection box is connected to the inside of the seawater waste discharge box, the positions of the metal sheet and the electromagnet correspond to each other, and the positioning block is located directly above the portable rangefinder.

[0013] According to the above technical solution, the sealing rubber strip fits with the top of the L-shaped control panel, the bottom of the L-shaped control panel fits with the top of the sealing panel, and the signal output end of the liquid level sensor is connected to the signal input end of the alarm.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use: 1. A composite water purification mechanism is provided, and the driving motor is used to drive the adjusting screw to rotate, and the position of the moving block and the strip electromagnetic block is adjusted. The strip electromagnetic block can adsorb and fix the metal strip through the sealing frame, and then pull the ceramic composite membrane and the reverse osmosis membrane to move together. The two ceramic composite membranes and the two reverse osmosis membranes work alternately, one for purification, and the other for maintenance at the same time. The electromagnetic valve is used to discharge the protective liquid in the protective liquid storage box downward to soak and maintain the ceramic composite membrane and the reverse osmosis membrane, realizing the concept of double-station operation, so that water purification can be carried out continuously, and the need to stop the machine for maintenance will prevent the purification work from being suspended, resulting in reduced work efficiency; Meanwhile, the guiding plate guides the moving bottom plate, and the metal strip plate slides along the guiding strip holes, providing limit guiding from both the upper and lower directions, improving the moving stability of the ceramic composite membrane and the reverse osmosis membrane. The sealing partition separates the two ceramic composite membranes and the two reverse osmosis membranes, enabling them to be isolated from each other. At the same time, the left partition and the right partition are used to seal both sides, so that the two ceramic composite membranes and the two reverse osmosis membranes are located in two separate spaces inside the fresh water purification tank and the seawater purification tank respectively, suitable for double-station alternating operation, and preventing water from seeping out and affecting its normal maintenance.

[0015] 2. The sealing frame is used to cover and seal the guiding strip holes, enabling the movement and replacement of the metal strip plate, the ceramic composite membrane, and the reverse osmosis membrane to be carried out in a sealed state, preventing the purified flowing water from seeping out. At the same time, the sealing gasket is embedded inside the sealing groove, improving the sealing performance of the sealing frame. The inclined infusion tank and the cleaning nozzle cooperate with each other to spray the water transported from the outside obliquely onto the ceramic composite membrane and the reverse osmosis membrane, playing a role in flushing and cleaning them, effectively removing the adhered impurities and salts, and facilitating subsequent continued use.

[0016] 3. It can be rotated according to the water quality situation. The fresh water purification tank is used to remove impurities from the fresh water. After the water passes through the ceramic composite membrane, the impurities in the water will be intercepted and filtered, so as to use the polluted fresh water resources. Moreover, the fresh water purification tank and the ceramic composite membrane can preliminarily filter the seawater, preliminarily treat the impurities in the seawater, and then use the high-pressure pump and the high-pressure water pipe to discharge the filtered water into the seawater purification tank under high pressure. Using high pressure to force the water to pass through the reverse osmosis membrane to remove the salt in the water, playing a role in seawater desalination. Furthermore, the overall device presents a state where two purification modules are spliced and combined, and the corresponding purification operation can be selected according to the needs, with a wider range of use.

[0017] 4. An environmental protection neutralization mechanism is provided. The rotating disc rotates to transport the alkaline solution in the alkaline solution storage tank to the seawater waste discharge tank. During the rotation of the infusion chute, it corresponds to the transport channel, so that the alkaline solution is contained in the infusion chute and then rotates into the seawater waste discharge tank to neutralize the concentrated brine discharged from it, reducing pollution to the external environment. Moreover, both sides of the infusion chute are inclined and will not lift the solution in the seawater waste discharge tank upward to affect the discharge of the alkaline solution when rotating upward; At the same time, the rotating rod and the stirring blades stir and mix the solution in the seawater waste discharge tank, accelerating the mixing and neutralization of the alkaline solution and the concentrated brine.

[0018] 5. By taking advantage of the fact that the floating degree of the high-density polyethylene floating board is different in salt water with different concentrations, the salt concentration of the wastewater discharged into the seawater waste discharge tank is detected. And the positioning block descends together with the lifting rod. The position and distance of the positioning block can be accurately measured by using a portable rangefinder, and then the floating position of the high-density polyethylene floating board can be known. The L-shaped control board is driven by an electric push rod to move, so that the alkaline solution stored above the guide inclined plate in the alkaline solution storage tank can fall to its bottom and is smoothly conveyed through the conveying channel for neutralization. The falling time of the alkaline solution is selected according to the detected salt concentration to control the discharge amount of the alkaline solution, making the neutralization control more accurate; At the same time, the liquid level sensor monitors the stored alkaline solution and uses an alarm to give an alarm outward in time when the alkaline solution is lacking, which is convenient for the staff to replenish it in time.

[0019] To sum up, by combining the composite water purification mechanism and the environmental protection neutralization mechanism, the rotation of the adjusting screw drives the large transmission wheel to rotate together, and the transmission belt drives and connects the small transmission wheel and the large transmission wheel, providing a power source for the small transmission wheel and the rotating rod, reducing the setting of power devices and improving the utilization rate of power energy; At the same time, the ceramic composite membrane and the reverse osmosis membrane work and are maintained alternately, which can reduce the loss of the ceramic composite membrane and the reverse osmosis membrane, effectively extend their service life, reduce the replacement frequency, and has a certain role in energy conservation and environmental protection. And the concentrated brine generated after seawater purification is highly polluting. Before it is discharged, effective neutralization is carried out on it, which can reduce the environmental pollution when discharging wastewater, and also conforms to the environmental protection concept. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0021] In the drawings: Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic installation structure diagram of the alkaline solution storage tank of the present invention; Figure 3 is a schematic installation structure diagram of the high-pressure water pipe of the present invention; Figure 4 is a schematic installation structure diagram of the moving block of the present invention; Figure 5 is a schematic installation structure diagram of the inclined infusion tank of the present invention; Figure 6 is a schematic installation structure diagram of the moving bottom plate of the present invention; Figure 7 is a schematic structural diagram of the composite water purification mechanism of the present invention; Figure 8 It is a schematic diagram of the installation structure of the reverse osmosis membrane of the present invention; Figure 9 It is a schematic diagram of the structure of the environmental protection neutralization mechanism of the present invention; Figure 10 It is a schematic diagram of the installation structure of the L-shaped control board of the present invention; Figure 11 It is a schematic diagram of the installation structure of the high-density polyethylene floating board of the present invention; Reference numerals in the figure: 1, base; 2, left mounting frame; 3, composite water purification mechanism; 301, fresh water waste discharge tank; 302, seawater waste discharge tank; 303, fresh water purification tank; 304, seawater purification tank; 305, guide plate; 306, moving bottom plate; 307, sealing partition; 308, left partition; 309, right partition; 310, ceramic composite membrane; 311, reverse osmosis membrane; 312, metal strip board; 313, guide strip hole; 314, sealing frame; 315, strip-shaped electromagnetic block; 316, drive motor; 317, adjusting screw; 318, moving block; 319, sealing groove; 320, sealing gasket; 321, locking bolt; 322, protective liquid storage tank; 323, solenoid valve; 324, infusion pipe; 325, discharge round hole; 326, control valve; 327, inclined infusion tank; 328, cleaning spray head; 329, connecting pipe; 330, liquid diversion box; 331, cleaning pump; 332, water pump; 333, water supply pipe; 334, water delivery pipe; 335, water storage tank; 336, drain valve; 337, transfer valve; 338, high-pressure pump; 339, high-pressure water pipe; 340, transfer pipeline; 341, discharge pipe; 4, environmental protection neutralization mechanism; 401, rotating rod; 402, stirring blade; 403, small transmission wheel; 404, large transmission wheel; 405, transmission belt; 406, rotating disc; 407, infusion chute; 408, alkaline solution storage tank; 409, conveying channel; 410, detection box; 411, guide frame; 412, lifting rod; 413, high-density polyethylene floating board; 414, metal sheet; 415, fixed frame; 416, electromagnet; 417, positioning frame; 418, portable rangefinder; 419, positioning block; 420, guide chute; 421, sealing rubber strip; 422, electric push rod; 423, L-shaped control board; 424, sealing board; 425, liquid level sensor; 426, alarm; 5, right mounting frame. Detailed implementation manners

[0022] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0023] Embodiment: AsFigures 1 - 11 As shown in the figure, the present invention provides a technical solution, a composite module water purification device, including a base 1. One end of the top of the base 1 is fixedly installed with a left mounting frame 2. The top end of the base 1 is fixedly installed with a right mounting frame 5 at a position on one side of the left mounting frame 2. A composite water purification mechanism 3 is fixedly installed between the middle parts of the left mounting frame 2 and the right mounting frame 5; The composite water purification mechanism 3 includes a fresh water waste discharge tank 301, a seawater waste discharge tank 302, a fresh water purification tank 303, a seawater purification tank 304, a guide plate 305, a moving bottom plate 306, a sealing partition 307, a left partition 308, a right partition 309, a ceramic composite membrane 310, a reverse osmosis membrane 311, a metal strip plate 312, a guide strip hole 313, a sealing frame 314, a strip electromagnetic block 315, a driving motor 316, an adjusting screw 317, a moving block 318, a sealing groove 319, a sealing gasket 320, a locking bolt 321, a protective liquid storage tank 322, a solenoid valve 323, an infusion pipe 324, a discharge round hole 325, a control valve 326, an inclined infusion tank 327, a cleaning spray head 328, a connecting pipe 329, a liquid diversion tank 330, a cleaning pump 331, a water extraction pump 332, a water supply pipe 333, a water delivery pipe 334, a water storage tank 335, a drain valve 336, a transfer valve 337, a high-pressure pump 338, a high-pressure water pipe 339, a transfer pipeline 340 and a discharge pipe 341; The middle part of the left mounting frame 2 is fixedly installed with a fresh water waste discharge tank 301. The middle part of the right mounting frame 5 is fixedly installed with a seawater waste discharge tank 302. The top end of the fresh water waste discharge tank 301 is fixedly installed with a fresh water purification tank 303. The top of the seawater waste discharge tank 302 is fixedly installed with a seawater purification tank 304. Guide plates 305 are fixedly installed in the middle of the bottom ends inside the fresh water purification tank 303 and the seawater purification tank 304. Moving bottom plates 306 are movably installed on the tops of the two guide plates 305. Sealing partitions 307 are symmetrically and fixedly installed in the middle of the top ends of the two moving bottom plates 306. Left partitions 308 are symmetrically installed at one end of the tops of the two moving bottom plates 306. Right partitions 309 are symmetrically installed at the end of the tops of the two moving bottom plates 306 far from the left partitions 308. A ceramic composite membrane 310 is symmetrically and fixedly installed at the top end of one moving bottom plate 306. A reverse osmosis membrane 311 is symmetrically and fixedly installed at the top end of the other moving bottom plate 306. The sum of the widths of the two ceramic composite membranes 310 and the sum of the widths of the two reverse osmosis membranes 311 are both equal to the length of the moving bottom plate 306. The two ceramic composite membranes 310 are in close contact with each other. The two reverse osmosis membranes 311 are in close contact with each other. The sealing partitions 307, the left partitions 308 and the right partitions 309 are symmetrically distributed on both sides of the ceramic composite membrane 310 and the reverse osmosis membrane 311, and are all in close fit with the ceramic composite membrane 310 and the reverse osmosis membrane 311; A metal strip 312 is fixedly installed between the tops of the two ceramic composite membranes 310 and between the tops of the two reverse osmosis membranes 311. A guide strip hole 313 is opened in the middle of the top of the fresh water purification box 303 and the seawater purification box 304. A sealing frame 314 is fixedly installed at the top of the fresh water purification box 303 and the seawater purification box 304 at a position corresponding to the guide strip hole 313. A bar electromagnetic block 315 is movably installed in the middle of the top of the sealing frame 314. A driving motor 316 is fixedly installed at one end of the top of the fresh water purification box 303 and the seawater purification box 304. The output shafts of the two driving motors 316 are fixedly connected to adjusting screws 317. A moving block 318 is installed in the middle of the two adjusting screws 317. The metal strip 312 is movably embedded in the inside of the guide strip hole 313. The sealing frame 314 covers the top of the metal strip 312. The positions of the bar electromagnetic block 315 and the metal strip 312 correspond to each other. The rod 317 and the moving block 318 are connected by threads, and the bottom end of the moving block 318 is fixedly connected to the top end of the strip electromagnetic block 315. The driving motor 316 is used to drive the adjusting screw 317 to rotate, and the positions of the moving block 318 and the strip electromagnetic block 315 are adjusted. The strip electromagnetic block 315 can adsorb and fix the metal strip plate 312 through the sealing frame 314, and then pull the ceramic composite membrane 310 and the reverse osmosis membrane 311 to move together. The two ceramic composite membranes 310 and the two reverse osmosis membranes 311 work alternately, one performs purification work, and the other can perform maintenance at the same time. The electromagnetic valve 323 is used to discharge the protective liquid in the protective liquid storage box 322 downward to soak and maintain the ceramic composite membrane 310 and the reverse osmosis membrane 311, realizing the concept of double-station operation, so that water purification can be carried out continuously, and the need to stop the machine for maintenance prevents the purification work from being suspended, resulting in reduced work efficiency; At the same time, the guide plate 305 guides the movable bottom plate 306, and the metal strip plate 312 slides along the guide strip hole 313 to limit and guide from the upper and lower directions, thereby improving the movement stability of the ceramic composite membrane 310 and the reverse osmosis membrane 311, and the sealing partition 307 separates the two ceramic composite membranes 310 and the two reverse osmosis membranes 311, so that the two ceramic composite membranes 310 and the two reverse osmosis membranes 311 can be isolated from each other, and at the same time, the left partition 308 and the right partition 309 are used to seal the two sides, so that the two ceramic composite membranes 310 and the two reverse osmosis membranes 311 are respectively located in two separate spaces inside the fresh water purification box 303 and the seawater purification box 304, so as to be suitable for alternating work of double stations to prevent water from penetrating outward and affecting their normal maintenance; At the positions where the tops of the fresh water purification tank 303 and the sea water purification tank 304 are located on one side of the guide strip holes 313, sealing grooves 319 are provided. At the edges of the bottoms of the two sealing frames 314, sealing gaskets 320 are fixedly connected. At both sides of the two sealing frames 314, locking bolts 321 are fixedly installed. The sealing gasket 320 is embedded in the sealing groove 319. The sealing frame 314 is fixedly connected to the fresh water purification tank 303 and the sea water purification tank 304 through the locking bolts 321. The guide strip holes 313 are covered and sealed by the sealing frame 314, so that the movement and transposition of the metal strip plate 312, the ceramic composite membrane 310 and the reverse osmosis membrane 311 are carried out in a sealed state, preventing the purified and flowing water from seeping out. At the same time, the sealing gasket 320 is embedded in the sealing groove 319, improving the sealing performance of the sealing frame 314; At both ends of the tops of the fresh water purification tank 303 and the sea water purification tank 304, protective liquid storage tanks 322 are symmetrically and fixedly installed. At both ends of the bottoms of the protective liquid storage tanks 322, electromagnetic valves 323 are fixedly installed. At the bottom ends of the electromagnetic valves 323, infusion pipes 324 are fixedly connected. At both ends of the moving bottom plate 306, discharge round holes 325 are symmetrically provided. At both ends of the tops of the fresh water waste discharge tank 301 and the sea water waste discharge tank 302, control valves 326 are symmetrically and fixedly installed. The bottom ends of the infusion pipes 324 are connected to the tops of the fresh water purification tank 303 and the sea water purification tank 304. The positions of the discharge round holes 325 and the control valves 326 correspond to each other. The connecting pipe 329 is connected to the liquid distribution tank 330; At both ends of the tops of the fresh water purification tank 303 and the sea water purification tank 304, inclined infusion tanks 327 are symmetrically and fixedly installed. At the bottoms of the inclined infusion tanks 327, cleaning spray nozzles 328 are equidistantly and inclinedly installed. At the top ends of the inclined infusion tanks 327, connecting pipes 329 are fixedly connected. In the middle of the tops of the fresh water purification tank 303 and the sea water purification tank 304, liquid distribution tanks 330 are fixedly installed. At the top ends of the two liquid distribution tanks 330, cleaning pumps 331 are fixedly installed. By the mutual cooperation of the inclined infusion tanks 327 and the cleaning spray nozzles 328, the water conveyed from the outside can be sprayed obliquely onto the ceramic composite membrane 310 and the reverse osmosis membrane 311, playing a role in flushing and cleaning them, effectively removing the adhered impurities and salts, and facilitating subsequent continuous use; A water pump 332 is fixedly installed at the bottom end of the left mounting bracket 2. One end of the water pump 332 is fixedly connected to a water supply pipe 333. One end of the bottom of the fresh water purification tank 303 is fixedly connected to a water delivery pipe 334. A water storage tank 335 is fixedly installed at a position on the side of the fresh water waste discharge tank 301 in the middle of the left mounting bracket 2. A drain valve 336 is fixedly installed at one end of the bottom of the water storage tank 335. The other end of the bottom of the water storage tank 335 is fixedly connected to a transfer valve 337. A high-pressure pump 338 is fixedly installed at the bottom end of the right mounting bracket 5. One end of the high-pressure pump 338 is fixedly connected to a high-pressure water pipe 339. The other end of the high-pressure pump 338 is fixedly connected to a transfer pipeline 340. One end of the bottom of the seawater purification tank 304 is fixedly connected to a discharge pipe 341. The top end of the water supply pipe 333 is connected to one end of the fresh water purification tank 303. One end of the water delivery pipe 334 is connected to the water storage tank 335. The transfer pipeline 340 is connected to the transfer valve 337. The high-pressure water pipe 339 is connected to one end of the seawater purification tank 304. It can be rotated according to the water quality situation. The fresh water purification tank 303 is used to remove impurities from fresh water. After the water passes through the ceramic composite membrane 310, the impurities in the water will be intercepted and filtered, so as to use the polluted fresh water resources. And the fresh water purification tank 303 and the ceramic composite membrane 310 can preliminarily filter seawater, preliminarily treat the impurities in the seawater, and then high-pressure discharge the filtered water into the seawater purification tank 304 through the high-pressure pump 338 and the high-pressure water pipe 339. Using high pressure to make the water flow through the reverse osmosis membrane 311 to remove the salt in the water, which plays the role of seawater desalination. Furthermore, the overall device presents a state where two purification modules are spliced and combined, and the corresponding purification operation can be selected according to the needs, with a wider range of use; An environmental protection neutralization mechanism 4 is installed in the middle of the seawater waste discharge tank 302; The environmental protection neutralization mechanism 4 includes a rotating rod 401, stirring blades 402, a small transmission wheel 403, a large transmission wheel 404, a transmission belt 405, a rotating disc 406, an infusion chute 407, an alkaline solution storage tank 408, a delivery channel 409, a detection box 410, a guiding frame 411, a lifting rod 412, a high-density polyethylene floating board 413, a metal sheet 414, a fixing frame 415, an electromagnet 416, a positioning frame 417, a portable rangefinder 418, a positioning block 419, a guiding inclined plate 420, a sealing rubber strip 421, an electric push rod 422, an L-shaped control board 423, a sealing plate 424, a liquid level sensor 425, an alarm 426 A rotating rod 401 is rotatably installed in the middle of the seawater waste discharge tank 302. Stirring blades 402 are fixedly installed at equal intervals in the middle of the rotating rod 401. One end of the rotating rod 401 is fixedly connected to a small transmission wheel 403. One end of an adjusting screw 317 located at the top of the seawater purification tank 304 is fixedly connected to a large transmission wheel 404. A transmission belt 405 is sleeved between the middle parts of the small transmission wheel 403 and the large transmission wheel 404. The other end of the rotating rod 401 is fixedly installed with a rotating disc 406. Liquid infusion inclined grooves 407 are equidistantly arranged along the circumferential direction on the edge of the rotating disc 406. One end of the top of the seawater waste discharge tank 302 is fixedly installed with an alkaline solution storage tank 408. One end of the bottom of the alkaline solution storage tank 408 is fixedly connected to a delivery channel 409. The bottom of the delivery channel 409 is inserted into the interior of the seawater waste discharge tank 302. The bottom end of the delivery channel 409 is arc-shaped and closely adheres to the top end of the rotating disc 406. The rotation of the rotating disc 406 is used to deliver the alkaline solution inside the alkaline solution storage tank 408 into the interior of the seawater waste discharge tank 302. During the rotation of the liquid infusion inclined grooves 407, they correspond to the delivery channel 409, so that the alkaline solution is contained inside the liquid infusion inclined grooves 407 and then rotates into the interior of the seawater waste discharge tank 302, where it is neutralized with the concentrated brine discharged inside, reducing pollution to the external environment. Moreover, both sides of the liquid infusion inclined grooves 407 are inclined, and when rotating upwards, they will not lift the solution inside the seawater waste discharge tank 302 upwards to affect the discharge of the alkaline solution. At the same time, the rotating rod 401 and the stirring blades 402 stir and mix the solution inside the seawater waste discharge tank 302, accelerating the mixing and neutralization of the alkaline solution and the concentrated brine; One end of the middle part of the seawater waste discharge tank 302 is fixedly installed with a detection box 410. The middle part of the top end of the detection box 410 is fixedly connected to a guiding frame 411. A lifting rod 412 is movably installed in the middle of the guiding frame 411. The bottom end of the lifting rod 412 is fixedly connected to a high-density polyethylene floating board 413. The top end of the lifting rod 412 is fixedly connected to a metal sheet 414. A fixing frame 415 is fixedly installed at the corresponding position of the top of the seawater waste discharge tank 302 and the detection box 410. An electromagnet 416 is fixedly installed at the top end of the fixing frame 415. One end of the detection box 410 is fixedly installed with a positioning frame 417. A portable rangefinder 418 is placed inside the positioning frame 417. One end of the metal sheet 414 is fixedly connected to a positioning block 419. The detection box 410 is connected to the inside of the seawater waste discharge tank 302. The positions of the metal sheet 414 and the electromagnet 416 correspond to each other. The positioning block 419 is directly above the portable rangefinder 418; Inside the middle part of the alkaline solution storage box 408, a material guiding inclined plate 420 is fixedly installed. At the bottom end of the material guiding inclined plate 420, a sealing rubber strip 421 is fixedly connected. Inside the alkaline solution storage box 408, symmetrically and fixedly installed at the position below the material guiding inclined plate 420 are electric push rods 422. Between the ends of the two electric push rods 422, an L-shaped control plate 423 is fixedly connected. Inside the alkaline solution storage box 408, at the position below the electric push rods 422, a sealing plate 424 is fixedly installed. At one end inside the alkaline solution storage box 408, a liquid level sensor 425 is fixedly installed. On the top of the alkaline solution storage box 408, an alarm 426 is fixedly installed. The sealing rubber strip 421 is in contact with the top end of the L-shaped control plate 423, and the bottom end of the L-shaped control plate 423 is in contact with the top end of the sealing plate 424. The signal output end of the liquid level sensor 425 is connected to the signal input end of the alarm 426. By using the fact that the high-density polyethylene floating plate 413 has different floating and sinking degrees in salt water with different concentrations, the salt concentration of the wastewater discharged into the seawater waste discharge box 302 is detected. And the positioning block 419 descends together with the lifting rod 412. The position and distance of the positioning block 419 can be accurately measured by using the portable rangefinder 418, and then the floating position of the high-density polyethylene floating plate 413 can be known. By driving the L-shaped control plate 423 to move with the electric push rod 422, the alkaline solution above the material guiding inclined plate 420 in the alkaline solution storage box 408 can fall to its bottom, so that it can be smoothly conveyed through the conveying channel 409 for neutralization. According to the detected salt concentration, the falling time of the alkaline solution is selected to control the discharge amount of the alkaline solution, making the neutralization control more accurate; At the same time, the liquid level sensor 425 monitors the stored alkaline solution, and when the alkaline solution is lacking, it uses the alarm 426 to give an alarm outward in time, which is convenient for the staff to supplement it in time. And the liquid level sensor 425 needs to have corrosion resistance to prevent it from being corroded by the alkaline solution and affecting its normal use.

[0024] The working principle and usage process of the present invention: First, according to the water quality situation to be purified, if the water to be purified is fresh water and there are impurities mixed in the fresh water, the water is pumped by the water pump 332 and injected into the inside of the fresh water purification box 303 through the water supply pipe 333. At this time, a sealed space is formed between the sealed partition 307 and the right partition 309. After the water enters this sealed space, it is aligned with one of the ceramic composite membranes 310. The ceramic composite membrane 310 filters and purifies the water, intercepting the impurities and particles in the water. The purified water enters the inside of the water storage tank 335 through the water delivery pipe 334, and the purified water can be taken out for use through the drain valve 336; If it is seawater that needs to be purified, the water pump 332 injects the seawater into the fresh water purification tank 303, and similarly, the seawater is passed through the ceramic composite membrane 310 to remove impurities in the seawater. Then, the seawater that has been initially cleaned enters the water storage tank 335, and is then discharged by the transfer valve 337. Then, the high-pressure pump 338 pressurizes the seawater and injects it into the seawater purification tank 304 through the high-pressure water pipe 339. Under high pressure, the seawater passes through the reverse osmosis membrane 311, and the reverse osmosis membrane 311 removes the salt in the water, thereby playing the role of desalinating water resources. The purified water after desalination is discharged through the discharge pipe 341 for use. After long-term use, the ceramic composite membrane 310 and the reverse osmosis membrane 311 will be polluted and their performance will be degraded. The drive motor 316 is started to drive the adjusting screw 317 to rotate, so that the moving block 318 and the bar electromagnetic block 315 move along the adjusting screw 317, and the bar electromagnetic block 315 is closely attached to the top of the sealing frame 314, and the metal strip plate 312 is magnetically adsorbed through the sealing frame 314, and then the bar electromagnetic block 315 will pull the metal strip plate 312 to slide along the guide strip hole 313, so as to adjust the positions of the two ceramic composite membranes 310 and the two reverse osmosis membranes 311. The ceramic composite membrane 310 corresponding to the sealing baffle 307 and the right baffle 309 and the impurities intercepted therein are pushed from the middle of the fresh water purification box 303 to one side, and the ceramic composite membrane 310 corresponding to the sealing baffle 307 and the left baffle 308 is pushed to the middle of the fresh water purification box 303 to replace the previous ceramic composite membrane 310 for water purification operation. Similarly, the positions of the two reverse osmosis membranes 311 are adjusted, and the reverse osmosis membrane 311 intercepting salt and the intercepted salt water are pushed to one side, and the other reverse osmosis membrane 311 is moved to the middle for subsequent seawater desalination operation; After the movement, the discharge circular hole 325 corresponds to the control valve 326 on one side, the control valve 326 is opened, and the cleaning pump 331 is turned on to draw water for cleaning from the outside, and inject it into the inclined infusion box 327 through the liquid diversion box 330 and the connecting pipe 329, and then the cleaning nozzle 328 sprays it to the ceramic composite membrane 310 and the reverse osmosis membrane 311 for cleaning, and the flushing water and the intercepted impurities and concentrated brine enter the interior of the fresh water waste discharge box 301 and the interior of the seawater waste discharge box 302 respectively through the control valve 326, and then, the control valve 326 and the cleaning pump 331 are closed, and the cleaning pump 331 is turned on. The solenoid valve 323 is opened, so that the protection liquid stored in the protection liquid storage tank 322 is injected into the fresh water purification tank 303 and the sea water purification tank 304 through the infusion tube 324, and the rinsed ceramic composite membrane 310 and the reverse osmosis membrane 311 are immersed and maintained. The immersion maintenance can also be deeply cleaned, so that the impurities and salts that penetrate into the ceramic composite membrane 310 and the reverse osmosis membrane 311 can be mixed in the protection liquid. After the maintenance is completed, the control valve 326 is opened to discharge the protection liquid downward into the fresh water waste tank 301 and the sea water waste tank 302; Next, the electromagnet 416 is powered off. After losing its magnetism, the metal sheet 414 and the lifting rod 412 fall freely. The high-density polyethylene floating plate 413 sinks into the solution inside the seawater waste discharge tank 302, and the internal solution contains the concentrated brine produced by water desalination. The density range of high-density polyethylene (HDPE) is 0.94 - 0.97 g / cm³. The higher the salt concentration in the water, the higher the density of the solution. As the density of the brine increases, the higher the high-density polyethylene floating plate 413 floats. The lifting rod 412 is made of high molecular lightweight plastic, which is light in weight and does not affect the normal floating of the high-density polyethylene floating plate 413. By measuring the distance of the positioning block 419 with the portable rangefinder 418, the height of the positioning block 419 floating with the high-density polyethylene floating plate 413 can be known, and thus the salt concentration of the solution inside the seawater waste discharge tank 302 can be judged. The electric push rod 422 is controlled to pull the L-shaped control plate 423 to slide along the sealing plate 424. The alkaline solution located above the material guiding inclined plate 420 inside the alkaline solution storage tank 408 can fall from the gap generated between the L-shaped control plate 423 and the side wall of the alkaline solution storage tank 408 to the lower part of the sealing plate 424. The higher the salt concentration of the solution inside the seawater waste discharge tank 302, the larger the gap generated by pulling the L-shaped control plate 423. The time for each alkaline solution to fall is the same. The larger the gap, the more alkaline solution falls; After a period of time, the positions of the two ceramic composite membranes 310 and the two reverse osmosis membranes 311 are adjusted again. The maintained ceramic composite membranes 310 and reverse osmosis membranes 311 are used to replace the ceramic composite membranes 310 and reverse osmosis membranes 311 that have been used for a long time. The ceramic composite membranes 310 and reverse osmosis membranes 311 that have been used for a long time are pushed to one side. Similarly to the above method, they are rinsed and soaked and maintained with the protective liquid. When adjusting the positions of the ceramic composite membranes 310 and reverse osmosis membranes 311, both of the two adjusting screws 317 are driven to rotate. A large transmission wheel 404 is fixedly installed at one end of the adjusting screw 317 located above the seawater purification tank 304. The large transmission wheel 404 and the small transmission wheel 403 are connected by a transmission belt 405. Therefore, when the large transmission wheel 404 is driven to rotate by the adjusting screw 317, the small transmission wheel 403 and the rotating rod 401 rotate synchronously. The rotating disc 406 rotates below the conveying channel 409. When the infusion chute 407 rotates to below the conveying channel 409, the alkaline solution existing at the bottom of the alkaline solution storage tank 408 enters the inside of the seawater waste discharge tank 302 through the conveying channel 409 and the infusion chute 407, and the stirring blades 402 stir and mix the solution inside the seawater waste discharge tank 302 to accelerate the mixing of the alkaline solution. The alkaline solution discharged is used to treat the concentrated brine to prevent the direct discharge of the concentrated brine from polluting the environment.

[0025] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A composite modular water purification device, comprising a base (1), characterized in that: A left mounting frame (2) and a right mounting frame (5) are mounted on the top of the base (1), and a composite water purification mechanism (3) is mounted between the middle parts of the left mounting frame (2) and the right mounting frame (5); The composite water purification mechanism (3) comprises a fresh water waste discharge tank (301) and a sea water purification tank (304); A freshwater waste discharge box (301) is installed in the middle of the left mounting frame (2); guide plates (305) are installed in the middle of the bottom ends of the freshwater purification box (303) and the seawater purification box (304); movable bottom plates (306) are movably installed on the tops of the two guide plates (305); a ceramic composite membrane (310) is symmetrically installed on the top of one of the movable bottom plates (306); and a reverse osmosis membrane (311) is symmetrically installed on the top of the other movable bottom plate (306); A metal strip plate (312) is installed between the top ends of the two ceramic composite membranes (310) and between the top ends of the two reverse osmosis membranes (311); guide strip holes (313) are provided at the top ends of the fresh water purification box (303) and the sea water purification box (304); a sealing frame (314) is installed at the top ends of the fresh water purification box (303) and the sea water purification box (304); a strip-shaped electromagnetic block (315) is movably installed in the middle of the top end of the sealing frame (314); a driving motor (316) is installed at one end of the top of the fresh water purification box (303) and the sea water purification box (304); the output shafts of the two driving motors (316) are connected to adjusting screws (317); and a moving block (318) is installed in the middle of the two adjusting screws (317).

2. A composite module water purification device according to claim 1, characterized in that: The sum of the widths of the two ceramic composite membranes (310) and the sum of the widths of the two reverse osmosis membranes (311) are both equal to the length of the movable bottom plate (306); the two ceramic composite membranes (310) are in close contact with each other, and the two reverse osmosis membranes (311) are in close contact with each other.

3. A composite modular water purification device according to claim 1, characterized in that: The metal strip plate (312) is movably embedded in the guide strip hole (313), the sealing frame (314) covers the top of the metal strip plate (312), the positions of the strip-shaped electromagnetic block (315) and the metal strip plate (312) correspond to each other, the adjusting screw (317) and the moving block (318) are connected by threads, and the bottom end of the moving block (318) is fixedly connected to the top end of the strip-shaped electromagnetic block (315).

4. A composite modular water purification device according to claim 1, characterized in that: A seawater waste discharge tank (302) is installed in the middle of the right mounting frame (5), a freshwater purification tank (303) is installed on the top of the freshwater waste discharge tank (301), and a seawater purification tank (304) is installed on the top of the seawater waste discharge tank (302); A sealing baffle (307) is symmetrically fixedly installed at the middle of the top of the two movable bottom plates (306), a left baffle (308) is symmetrically installed at one end of the top of the two movable bottom plates (306), and a right baffle (309) is symmetrically installed at one end of the top of the two movable bottom plates (306) away from the left baffle (308); The top ends of the fresh water purification box (303) and the sea water purification box (304) are both provided with sealing grooves (319) at positions on one side of the guide bar hole (313); the edges of the bottom ends of the two sealing frames (314) are both fixedly connected with sealing pads (320); and the two sides of the two sealing frames (314) are both fixedly installed with locking bolts (321); Both ends of the top of the fresh water purification box (303) and the seawater purification box (304) are symmetrically fixedly mounted with protective liquid storage boxes (322); both ends of the bottom of the protective liquid storage box (322) are fixedly mounted with solenoid valves (323); the bottom end of the solenoid valve (323) is fixedly connected with a liquid infusion tube (324); both ends of the movable bottom plate (306) are symmetrically provided with discharge circular holes (325); and both ends of the top of the fresh water waste discharge box (301) and the seawater waste discharge box (302) are symmetrically fixedly mounted with control valves (326); Both ends of the top of the fresh water purification box (303) and the seawater purification box (304) are symmetrically fixedly mounted with inclined infusion boxes (327); cleaning nozzles (328) are equidistantly and obliquely mounted on the bottom of the inclined infusion boxes (327); the top of each of the inclined infusion boxes (327) is fixedly connected with a connecting pipe (329); a liquid diversion box (330) is fixedly mounted in the middle of the top of each of the fresh water purification box (303) and the seawater purification box (304); and a cleaning pump (331) is fixedly mounted on the top of each of the two liquid diversion boxes (330).

5. A composite module water purification device according to claim 1, characterized in that: A water pump (332) is fixedly mounted on the bottom end of the left mounting frame (2), one end of the water pump (332) is fixedly connected to a water supply pipe (333), one end of the bottom of the fresh water purification box (303) is fixedly connected to a water delivery pipe (334), a water storage tank (335) is fixedly mounted in the middle of the left mounting frame (2) at a position on one side of the fresh water waste discharge box (301), one end of the bottom of the water storage tank (335) is fixedly mounted to a drainage valve (336), and the other end of the bottom of the water storage tank (335) is fixedly connected to a switching valve (337), a high-pressure pump (338) is fixedly mounted on the bottom end of the right mounting frame (5), one end of the high-pressure pump (338) is fixedly connected to a high-pressure water pipe (339), and the other end of the high-pressure pump (338) is fixedly connected to a switching pipe (340), and one end of the bottom of the seawater purification box (304) is fixedly connected to a discharge pipe (341).

6. A composite modular water purification device according to claim 4, characterized in that: The sealing partition (307), the left partition (308), and the right partition (309) are all symmetrically distributed on both sides of the ceramic composite membrane (310) and the reverse osmosis membrane (311), and are all tightly fitted to the ceramic composite membrane (310) and the reverse osmosis membrane (311); The sealing gasket (320) is embedded and installed inside the sealing groove (319), and the sealing frame (314) is fixedly connected to the fresh water purification box (303) and the sea water purification box (304) via locking bolts (321); The bottom end of the liquid infusion pipe (324) is connected to the top ends of the fresh water purification tank (303) and the sea water purification tank (304), the positions of the discharge circular hole (325) and the control valve (326) correspond to each other, and the connecting pipe (329) is connected to the liquid diversion box (330).

7. A composite modular water purification device according to claim 5, characterized in that: The top end of the water supply pipe (333) is connected to one end of the fresh water purification tank (303), one end of the water delivery pipe (334) is connected to the water storage tank (335), the switching pipe (340) is connected to the switching valve (337), and the high-pressure water pipe (339) is connected to one end of the seawater purification tank (304).

8. A composite modular water purification device according to claim 5, characterized in that: An environmental protection neutralization mechanism (4) is installed in the middle of the seawater waste discharge box (302); The environmental neutralization mechanism (4) comprises a rotating rod (401); A rotating rod (401) is rotatably mounted in the middle of the seawater waste discharge box (302), stirring blades (402) are equidistantly fixedly mounted in the middle of the rotating rod (401), a small transmission wheel (403) is fixedly connected to one end of the rotating rod (401), a large transmission wheel (404) is fixedly connected to one end of an adjusting screw rod (317) located at the top of the seawater purification box (304), a transmission belt (405) is sleeved between the middle of the small transmission wheel (403) and the large transmission wheel (404), a rotating disc (406) is fixedly mounted on the other end of the rotating rod (401), and an infusion chute (407) is equidistantly provided on the edge of the rotating disc (406) along the circumferential direction, an alkaline solution storage box (408) is fixedly mounted on one end of the top of the seawater waste discharge box (302), and a conveying channel (409) is fixedly connected to one end of the bottom of the alkaline solution storage box (408); A detection box (410) is fixedly installed at one end of the middle of the seawater waste discharge box (302), a guide frame (411) is fixedly connected to the middle of the top of the detection box (410), a lifting rod (412) is movably installed in the middle of the guide frame (411), a high-density polyethylene floating plate (413) is fixedly connected to the bottom of the lifting rod (412), a metal sheet (414) is fixedly connected to the top of the lifting rod (412), a fixing frame (415) is fixedly installed at a position corresponding to the detection box (410) at the top of the seawater waste discharge box (302), an electromagnet (416) is fixedly installed at the top of the fixing frame (415), a positioning frame (417) is fixedly installed at one end of the detection box (410), a portable rangefinder (418) is placed inside the positioning frame (417), and a positioning block (419) is fixedly connected to one end of the metal sheet (414); A material guide inclined plate (420) is fixedly installed in the middle of the alkaline solution storage box (408), and a sealing rubber strip (421) is fixedly connected to the bottom end of the material guide inclined plate (420). Electric push rods (422) are symmetrically fixedly installed in the alkaline solution storage box (408) at a position below the material guide inclined plate (420), and an L-shaped control board (423) is fixedly connected between the ends of the two electric push rods (422). A sealing plate (424) is fixedly installed in the alkaline solution storage box (408) at a position below the electric push rods (422). A liquid level sensor (425) is fixedly installed at one end of the alkaline solution storage box (408), and an alarm (426) is fixedly installed on the top of the alkaline solution storage box (408).

9. A composite modular water purification device according to claim 8, characterized in that: The bottom of the conveying channel (409) is inserted into the interior of the seawater waste discharge box (302), and the bottom end of the conveying channel (409) is arc-shaped and closely attached to the top end of the rotating disc (407); The detection box (410) is connected to the inside of the seawater waste discharge box (302), the positions of the metal sheet (414) and the electromagnet (416) correspond to each other, and the positioning block (419) is located directly above the portable rangefinder (418).

10. A composite modular water purification device according to claim 8, characterized in that: The sealing rubber strip (421) is fitted with the top end of the L-shaped control panel (423), the bottom end of the L-shaped control panel (423) is fitted with the top end of the sealing panel (424), and the signal output end of the liquid level sensor (425) is connected to the signal input end of the alarm (426).

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