EFDT High-Efficiency Desalination Device

Abstract

This application relates to an EFDT high-efficiency desalination device, which includes a fresh water tank, an EFDT purifier, an EFDT cation bed, a decarbonator, an EFDT anion bed, a mixed bed, and a storage tank. The decarbonator includes a housing, and an accommodation cavity is formed inside the housing. A heating plate and a spraying plate are arranged on the inner wall of the accommodation cavity. The heating plate and the spraying plate divide the accommodation cavity into a heating cavity, an air outlet cavity, and an air inlet cavity. A plurality of nozzles are arranged on the end face of the spraying plate, and a plurality of ventilation holes are formed on the plate surface of the heating plate. In this application, the heating plate, the elastic block, and the nozzles are arranged to remove the weak acid root ions in the fresh water, thereby improving the desalination efficiency of the fresh water; the limiting ring and the first thermo-expansion and contraction block are arranged, and the nozzles stably spray gas into the heating cavity, increasing the contact area between the gas and the fresh water, thereby improving the efficiency of removing weak electrolytes in the fresh water; the arrangement of the communication holes further increases the contact area between the fresh water and the gas, improves the efficiency of the gas carrying carbon dioxide in the water, and thereby improves the efficiency of removing weak electrolytes in the fresh water.

Description

Technical Field

[0001] This application relates to the field of pure water devices, and particularly to an EFDT high-efficiency desalination device. Background Art

[0002] The desalted water treatment process generally refers to the process of removing strong conductive substances in water while also removing weak electrolytes in water, such as carbon dioxide and other substances, and can also be called the pure water treatment process or deep desalted water.

[0003] Currently, relatively mature desalted water treatment processes include electrodialysis, ion exchange, reverse osmosis, EDI, etc. The EDI method realizes the directional migration of ions in water under the action of an electric field through the selective permeation of cations and anions by cation and anion membranes and the ion exchange of ion exchange resins for ions in water, so as to achieve deep desalination of water.

[0004] Regarding the above related technologies, the inventor believes that during the use of the desalted water treatment device, it is not convenient to fully remove strong electrolytes and weak electrolytes in water, thereby reducing the desalted water treatment efficiency. Summary of the Invention

[0005] In order to improve the problem of desalted water treatment efficiency, this application provides an EFDT high-efficiency desalination device.

[0006] An EFDT high-efficiency desalination device provided by this application adopts the following technical solutions:

[0007] An EFDT high-efficiency desalination device includes a clear water tank, an EFDT purifier, an EFDT cation bed, a decarbonator, an EFDT anion bed, a mixed bed, and a storage tank. The clear water tank, EFDT purifier, EFDT cation bed, decarbonator, EFDT anion bed, mixed bed, and storage tank are sequentially connected by pipelines. The decarbonator includes a housing, and an accommodation cavity is opened in the housing. A heating plate and a spraying plate are arranged on the inner wall of the accommodation cavity. The heating plate and the spraying plate divide the accommodation cavity into a heating cavity, an air outlet cavity, and an air inlet cavity. The heating cavity is located on the side of the heating plate away from the spraying plate. An inlet channel for clear water to enter is opened on the inner wall of the heating cavity. The heating plate is used to heat the clear water. The air outlet cavity is located between the heating plate and the spraying plate. The air inlet cavity is located on the side of the spraying plate away from the heating plate. A plurality of nozzles for jetting air are arranged on the end face of the spraying plate facing the heating plate. A plurality of ventilation holes for gas to pass through are opened on the plate surface of the heating plate. The plurality of ventilation holes respectively face the plurality of nozzles. An air outlet pipe for gas to be discharged is opened on the inner wall of the heating cavity. A plurality of elastic blocks are arranged on the circumferential hole wall of the ventilation hole. The plurality of elastic blocks are spliced to form a circular plate and close the ventilation hole. An outlet channel for clear water to be discharged is opened on the inner wall of the air outlet cavity. When the nozzles jet air, the gas drives the elastic blocks to deform and connects the heating cavity with the air outlet cavity.

[0008] By adopting the above technical solution, the clear water in the clear water tank enters the EFDT purifier through a pipeline. The EFDT purifier filters the impurities in the clear water, reduces the conductivity of the clear water. The clear water after impurity filtration enters the EFDT cation bed through a pipeline. The EFDT cation bed removes the cations in the clear water. The clear water after cation removal enters the decarbonator through a pipeline. The heating plate heats the clear water in the heating cavity, so that the clear water in the heating cavity is evenly heated, accelerating the reaction of carbonate ions and hydrogen ions to produce carbon dioxide and water. The nozzle continuously sprays gas, the gas squeezes the elastic block and drives the elastic block to deform. The heating cavity communicates with the air outlet cavity. The gas sprayed by the nozzle fully contacts the clear water, and the gas carries the carbon dioxide in the clear water and is discharged from the air outlet pipeline, realizing the removal of weak acid root ions in the clear water, thereby improving the desalination efficiency of the clear water; The clear water after removing weak acid root ions enters the air outlet cavity from the ventilation hole and is discharged from the water outlet channel. The clear water after removing weak acid root ions enters the EFDT anion bed through a pipeline. The EFDT anion bed removes the anions in the clear water. The clear water after anion removal enters the mixed bed through a pipeline. The mixed bed exchanges and removes the cations and anions in the clear water, thereby reducing the hardness of the clear water. The deionized pure water obtained enters the storage tank through a pipeline for storage. By separating the anions and cations in the clear water step by step, the desalination efficiency of the water is further improved.

[0009] Optionally, a limiting ring is arranged on the outer wall of the heating plate, and a sliding groove for the limiting ring to slide is arranged on the inner wall of the accommodating cavity. The length direction of the sliding groove is close to or away from the spraying plate. A first thermo - expansion and contraction block is arranged on the inner wall of the sliding groove. The end of the first thermo - expansion and contraction block away from the inner wall of the sliding groove is arranged on the limiting ring. When the first thermo - expansion and contraction block is heated and deformed to drive the heating plate to slide towards the spraying plate, the outer peripheral wall of the nozzle squeezes the elastic block to deform and connects the heating cavity with the air outlet cavity.

[0010] By adopting the above technical solution, when the heating plate heats the clear water in the heating cavity, the first thermo - expansion and contraction block is heated and deformed to drive the heating plate to slide towards the spraying plate. The outer peripheral wall of the nozzle squeezes the outer wall of the elastic block and drives the elastic block to deform. The heating cavity communicates with the air outlet cavity. The nozzle stably sprays gas into the heating cavity, increasing the contact area between the gas and the clear water, thereby improving the efficiency of removing weak electrolytes in the clear water.

[0011] Optionally, a plurality of communication holes for clear water to enter the air outlet cavity are formed in the heating plate. The plurality of communication holes are in one-to-one correspondence with the ventilation holes. An opening and closing assembly for controlling the opening and closing of the communication holes is arranged on the heating plate. A sliding groove for accommodating the opening and closing assembly is arranged on the wall of the communication hole. The opening and closing assembly includes a second thermo-expansion and contraction block and an opening and closing block. A through groove for the clear water to pass through is arranged on the opening and closing block. Both ends of the second thermo-expansion and contraction block are fixed on the inner wall of the sliding groove and the outer wall of the opening and closing block. The second thermo-expansion and contraction block deforms when heated and drives the opening and closing block to slide to the through groove to communicate with the communication hole.

[0012] By adopting the above technical solution, when the outer peripheral wall of the nozzle extrudes the elastic block to deform and connects the communication cavity with the air outlet cavity, the second thermo-expansion and contraction block is heated and deformed. The second thermo-expansion and contraction block drives the opening and closing block to slide along the inner wall of the sliding groove to the through groove to communicate with the communication hole. The clear water in the heating cavity sequentially passes through the communication hole, the through groove and enters the ventilation hole. The gas ejected by the nozzle is in full contact with the clear water discharged from the through groove. The gas drives the clear water to flow towards the heating cavity against its own gravity, realizing the reflux of the clear water, further increasing the contact area between the clear water and the gas, improving the efficiency of the gas carrying carbon dioxide in the water, and thus improving the removal efficiency of weak electrolytes in the clear water.

[0013] Optionally, a waterproof and breathable membrane is arranged at the ejection end of the nozzle. The waterproof and breathable membrane is used to prevent the clear water in the ventilation hole from entering the inner cavity of the nozzle.

[0014] The clear water after removing carbon dioxide enters the air outlet cavity from the ventilation hole and is discharged from the water outlet channel. A waterproof and breathable membrane is arranged at the ejection end of the nozzle. The clear water after removing carbon dioxide is not easy to enter the inner cavity of the nozzle from the ventilation hole, thereby improving the stability of the clear water after removing carbon dioxide discharged from the water outlet channel.

[0015] Optionally, a heating layer is arranged on the inner wall of the heating cavity, and an electric heating wire is embedded in the heating layer.

[0016] By adopting the above technical solution, when part of the clear water in the heating cavity is heated and vaporized to form water vapor, the gas carries the water vapor upward, and carbon dioxide is dissolved in the water vapor. The electric heating wire is energized to generate heat stably, so that the heating layer maintains a certain temperature. When the water vapor contacts the heating layer, it is not easy to be cooled and liquefied to form small water droplets and flow back to the heating cavity, thereby improving the desalination efficiency of the clear water.

[0017] Optionally, the air outlet pipe communicates with the water inlet channel.

[0018] By adopting the above technical solution, when the gas carrying carbon dioxide and part of the water vapor is discharged from the air outlet pipe, a small amount of water vapor contacts the inner wall of the air outlet pipe. The temperature of the inner wall of the air outlet pipe is lower than that of the water vapor, and the water vapor is liquefied by cooling to form small water droplets. The small water droplets flow back along the inner wall of the air outlet pipe to the water inlet channel, realizing the reflux of clear water, reducing the mass of the volatilized clear water, and thus increasing the output of deionized pure water.

[0019] Optionally, it further includes a plurality of hollow balls, and the plurality of hollow balls are located in the heating cavity.

[0020] By adopting the above technical solution, the gas ejected by the nozzle enters the heating cavity from the ventilation hole. The gas impacts the surface of the hollow ball and flows along the surface of the hollow ball, increasing the contact area between the gas and the clear water. The gas carries the carbon dioxide in the clear water and is discharged from the air outlet pipe, further improving the removal efficiency of weak electrolytes in the clear water.

[0021] Optionally, a limiting strip is arranged between the hollow ball and the heating plate. Both ends of the limiting strip are arranged on the outer wall of the hollow ball and the surface of the heating plate, and the projected part of the hollow ball on the heating plate covers the ventilation hole.

[0022] By adopting the above technical solution, the limiting strip limits the hollow ball on the surface of the heating plate. The projected part of the hollow ball on the heating plate covers the ventilation hole, enabling the gas ejected by the nozzle to stably pass through the ventilation hole and impact the surface of the hollow ball, increasing the contact area of the gas impacting the hollow ball, and improving the efficiency of the gas carrying the carbon dioxide in the clear water and being discharged from the air outlet pipe.

[0023] Optionally, the limiting strip is a thermal expansion and contraction strip.

[0024] By adopting the above technical solution, the thermal expansion and contraction strip deforms when heated, increasing the movement space of the hollow ball in the heating cavity, enabling the hollow ball to move up and down above the ventilation hole, further increasing the contact area between the gas and the clear water, and thus improving the efficiency of removing weak electrolytes from the clear water.

[0025] Optionally, a first elastic member is arranged on the inner wall of the sliding groove. The end of the first elastic member away from the inner wall of the sliding groove is arranged on the limiting ring, and the elastic force of the first elastic member drives the heating plate to slide away from the spraying plate.

[0026] By adopting the above technical solution, when the heating plate stops heating, the first thermal expansion and contraction block deforms when cooled and drives the heating plate to slide away from the spraying plate. At the same time, the elastic force of the first elastic member drives the heating plate to slide away from the spraying plate, realizing the reset of the heating plate, and thus improving the sliding stability of the heating plate on the inner wall of the accommodating cavity.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The settings of the heating plate, elastic block and nozzle can remove weak acid root ions in clear water, thereby improving the desalination efficiency of clear water;

[0029] 2. The settings of the limiting ring and the first thermal expansion and contraction block enable the nozzle to stably inject gas into the heating cavity, increasing the contact area between the gas and the clear water, thereby improving the efficiency of removing weak electrolytes in the clear water;

[0030] 3. The setting of the communication hole further increases the contact area between the clear water and the gas, improves the efficiency of the gas carrying carbon dioxide in the water, and thereby improves the efficiency of removing weak electrolytes in the clear water. Description of the Drawings

[0031] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application.

[0032] Figure 2 It is a sectional view of the decarbonator in the embodiment of the present application.

[0033] Description of the Reference Numerals: 1, clear water tank; 11, first water pump; 2, EFDT purifier; 3, EFDT cation bed; 4, decarbonator; 41, temporary storage tank; 411, second water pump; 42, housing; 421, accommodation cavity; 4211, heating cavity; 4212, air outlet cavity; 4213, air inlet cavity; 4214, air inlet pipe; 4215, water inlet channel; 4216, heating layer; 4217, air outlet channel; 42171, air outlet section; 42172, exhaust section; 42173, through section; 4218, water outlet channel; 4219, chute; 43, heating plate; 431, ventilation hole; 4311, elastic block; 432, communication hole; 4321, sliding groove; 4322, water inlet end; 4323, water outlet end; 433, limiting ring; 4331, first thermal expansion and contraction block; 4332, first elastic member; 434, opening and closing assembly; 4341, second thermal expansion and contraction block; 4342, opening and closing block; 43421, through groove; 43422, second elastic member; 44, spraying plate; 441, gas flow channel; 4411, main flow section; 4412, shunt section; 442, water inlet hole; 45, air pump; 46, nozzle; 461, waterproof and breathable membrane; 5, EFDT anion bed; 6, mixed bed; 61, third water pump; 7, storage tank; 8, hollow ball; 81, limiting strip. Detailed Embodiment

[0034] The following will further describe the present application in detail with reference to the Figure 1-2 drawings.

[0035] The embodiment of the present application discloses an EFDT high-efficiency desalination device. Refer to Figure 1, the EFDT high-efficiency desalination device includes a clear water tank 1, an EFDT purifier 2, an EFDT cation bed 3, a decarbonator 4, an EFDT anion bed 5, a mixed bed 6, and a storage water tank 7. The clear water tank 1, the EFDT purifier 2, the EFDT cation bed 3, the decarbonator 4, the EFDT anion bed 5, the mixed bed 6, and the storage water tank 7 are connected in sequence through pipelines.

[0036] Refer to Figure 1 , the clear water tank 1 is used to hold clear water. A first water pump 11 is connected between the clear water tank 1 and the EFDT purifier 2. The first water pump 11 is used to drive the clear water in the clear water tank 1 into the EFDT purifier 2. The pipeline connects the water inlet end of the first water pump 11 and the inner cavity of the clear water tank 1, and the pipeline connects the water outlet end of the first water pump 11 and the input port of the EFDT purifier 2. The EFDT purifier 2 is used to filter impurities in the clear water.

[0037] Refer to Figure 1 , the pipeline connects the output port of the EFDT purifier 2 and the input port of the EFDT cation bed 3. The EFDT cation bed 3 is used to remove cations in the clear water. The pipeline connects the output port of the EFDT cation bed 3 and the inner cavity of the decarbonator 4. The decarbonator 4 is used to remove weak electrolytes in the clear water. A temporary storage tank 41 for holding the clear water with removed weak electrolytes is fixed at the bottom of the decarbonator 4. The pipeline connects the inner cavity of the decarbonator 4 and the inner cavity of the temporary storage tank 41.

[0038] Refer to Figure 1 , a second water pump 411 is connected between the temporary storage tank 41 and the EFDT anion bed 5. The second water pump 411 is used to drive the clear water in the temporary storage tank 41 into the EFDT anion bed 5. The EFDT anion bed 5 is used to remove anions in the clear water. The pipeline connects the inner cavity of the temporary storage tank 41 and the input port of the EFDT anion bed 5.

[0039] Refer to Figure 1 , the pipeline connecting the output port of the EFDT anion bed 5 is connected to the input port of the mixed bed 6. The mixed bed 6 is used to remove anions and cations in the clear water. A third water pump 61 is connected between the output port of the mixed bed 6 and the storage water tank 7. The storage water tank 7 is used to store deionized pure water. The third water pump 61 is used to drive the deionized pure water in the mixed bed 6 into the inner cavity of the storage water tank 7. The pipeline connects the output port of the mixed bed 6 and the water inlet end of the third water pump 61, and the pipeline connects the water outlet end of the third water pump 61 and the inner cavity of the storage water tank 7.

[0040] Refer to Figure 2, the decarbonizer 4 includes a housing 42. An accommodation cavity 421 is formed inside the housing 42. A heating plate 43 and a spraying plate 44 are connected to the inner wall of the accommodation cavity 421. The outer wall of the heating plate 43 abuts tightly against the inner wall of the accommodation cavity 421. The heating plate 43 and the spraying plate 44 divide the accommodation cavity 421 into a heating cavity 4211, an air outlet cavity 4212 and an air inlet cavity 4213. In the embodiment of the present application, the spraying plate 44 is fixed to the inner wall of the accommodation cavity 421 by welding or screws, so as to fix the spraying plate 44 on the inner wall of the accommodation cavity 421.

[0041] Referring to Figure 2 , the air outlet cavity 4212 is located between the heating plate 43 and the spraying plate 44. The heating cavity 4211 is located on the side of the air outlet cavity 4212 away from the spraying plate 44. The air inlet cavity 4213 is located on the side of the air outlet cavity 4212 away from the heating plate 43. An air inlet pipe 4214 for gas to enter is provided on the inner wall of the air inlet cavity 4213. An air pump 45 for supplying gas is connected to the outer wall of the housing 42. The output port of the air pump 45 and the air inlet pipe 4214 are connected through a pipe.

[0042] Referring to Figure 2 , a plurality of nozzles 46 for gas to spray are provided on the outer wall of the spraying plate 44 located in the air outlet cavity 4212. A gas flow channel 441 for gas to enter the inner cavity of the nozzle 46 is provided on the outer wall of the spraying plate 44 located in the air inlet cavity 4213. The gas flow channel 441 includes a main flow section 4411 and a plurality of branch flow sections 4412. The end of the main flow section 4411 is connected to the ends of the plurality of branch flow sections 4412. The length direction of the main flow section 4411 coincides with the axis of the spraying plate 44. The end of the main flow section 4411 away from the branch flow sections 4412 is connected to the air inlet cavity 4213. The ends of the plurality of branch flow sections 4412 away from the main flow section 4411 are respectively connected to the inner cavities of the plurality of nozzles 46.

[0043] Referring to Figure 2 , a waterproof and breathable membrane 461 is fixed to the spraying end of the nozzle 46. In the embodiment of the present application, the waterproof and breathable membrane 461 is mainly composed of three layers: PP spunbond non-woven fabric, PE high molecular breathable membrane and PP spunbond non-woven fabric. The waterproof and breathable membrane 461 is used to prevent clear water from entering the inner cavity of the nozzle 46.

[0044] Referring to Figure 2 , a water inlet channel 4215 for clear water to enter is provided on the inner wall of the heating cavity 4211. The water inlet channel 4215 penetrates through the outer wall of the housing 42 and is connected to the inner cavity of the pipe. An electric heating wire is embedded in the heating plate 43. The heating plate 43 is used to heat the clear water in the heating cavity 4211, accelerate the reaction between carbonate ions and hydrogen ions to produce carbon dioxide and water, and improve the removal of weak electrolytes in the clear water.

[0045] Referring to Figure 2, a heating layer 4216 is fixed to the inner wall of the heating chamber 4211. Electric heating wires are embedded in the heating layer 4216. When the electric heating wires are energized, they generate heat to keep the inner wall of the heating chamber 4211 at a stable temperature, so that the water vapor dissolved with carbon dioxide is not likely to contact the inner wall of the heating chamber 4211 and liquefy into small water droplets due to cooling.

[0046] Refer to Figure 2 , a plurality of ventilation holes 431 for gas flow are formed in the outer wall of the heating plate 43. The axes of the ventilation holes 431 are parallel to the axis of the heating plate 43. The ventilation holes 431 penetrate through the outer walls on both sides of the heating plate 43 along their own axes. A plurality of ventilation holes 431 are respectively oriented towards the spraying end of the nozzle 46. A plurality of elastic blocks 4311 are fixed to the inner hole wall of the ventilation holes 431. The elastic blocks 4311 are sector-shaped blocks. A plurality of sector-shaped blocks are spliced to form a circular plate and close the ventilation holes 431. The material of the elastic blocks 4311 can be rubber or silica gel. In the embodiment of the present application, the material of the elastic blocks 4311 is rubber, which has a certain deformation ability.

[0047] Refer to Figure 2 , the EFDT high-efficiency desalination device further includes a plurality of hollow balls 8. The plurality of hollow balls 8 are located in the heating chamber 4211. A limiting strip 81 is fixed between the hollow balls 8 and the heating plate 43. In the embodiment of the present application, two limiting strips 81 are provided. The limiting strip 81 is a thermal expansion and contraction strip. In the embodiment of the present application, the material of the thermal expansion and contraction strip is nylon, which has a certain deformation ability; both ends in the length direction of the limiting strip 81 are fixed to the outer wall of the hollow ball 8 and the outer wall of the heating plate 43. A plurality of hollow balls 8 are respectively limited above a plurality of ventilation holes 431. The projection of the hollow balls 8 on the heating plate 43 partially covers the ventilation holes 431.

[0048] Refer to Figure 2 , an air outlet channel 4217 for gas discharge is formed in the inner wall of the heating chamber 4211. The air outlet channel 4217 penetrates through the outer wall of the housing 42. The air outlet channel 4217 includes an air outlet section 42171, an exhaust section 42172, and a through section 42173. The end of the air outlet section 42171 communicates with the heating chamber 4211. The end of the exhaust section 42172 and the end of the through section 42173 communicate with the end of the air outlet section 42171 away from the housing 42. The end of the exhaust section 42172 away from the air outlet section 42171 communicates with the air. The end of the through section 42173 away from the air outlet section 42171 communicates with the inner cavity of the water inlet channel 4215.

[0049] Refer to Figure 2, the heating plate 43 is located on the outer wall of the heating chamber 4211, and a plurality of communication holes 432 for clean water to enter the air outlet chamber 4212 are opened. The plurality of communication holes 432 communicate with a plurality of ventilation holes 431 one by one. The communication hole 432 includes a water inlet end 4322 and a water outlet end 4323. The axis of the water inlet end 4322 is parallel to the axis of the communication hole 432, and the axis of the water outlet end 4323 is perpendicular to the axis of the communication hole 432. The side of the water inlet end 4322 away from the water outlet end 4323 communicates with the heating chamber 4211, and the side of the water outlet end 4323 away from the water inlet end 4322 communicates with the communication hole 432 and the water outlet end 4323 is located below the elastic block 4311.

[0050] Refer to Figure 2 , a water outlet channel 4218 for discharging clean water is opened on the inner wall of the air outlet chamber 4212. A pipeline communicates the water outlet channel 4218 and the inner cavity of the temporary storage box 41. A water inlet hole 442 for clean water to enter the water outlet channel 4218 is opened on the outer wall of the spraying plate 44 facing the air outlet chamber 4212.

[0051] Refer to Figure 2 , a limiting ring 433 is coaxially fixed on the outer wall of the heating plate 43. A sliding groove 4219 for the limiting ring 433 to slide is coaxially opened on the inner wall of the accommodating chamber 421. The length direction of the sliding groove 4219 is close to or away from the spraying plate 44. A first thermal expansion and contraction block 4331 is fixed on the outer wall of the limiting ring 433 facing the heating chamber 4211. In the embodiment of the present application, the material of the first thermal expansion and contraction block 4331 is nylon, which has a certain deformation ability. The outer wall of the first thermal expansion and contraction block 4331 away from the limiting ring 433 is fixed on the inner wall of the sliding groove 4219.

[0052] Refer to Figure 2 , when the first thermal expansion and contraction block 4331 is heated and deformed, the first thermal expansion and contraction block 4331 drives the limiting ring 433 to slide towards the spraying plate 44, and the outer wall of the nozzle 46 presses the elastic block 4311 to deform and communicates the heating chamber 4211 with the air outlet chamber 4212, so that the gas sprayed by the nozzle 46 stably enters the heating chamber 4211.

[0053] Refer to Figure 2 , a first elastic member 4332 is fixed on the outer wall of the limiting ring 433 away from the first thermal expansion and contraction block 4331. The first elastic member 4332 can be a compression spring or a torsion spring. In the embodiment of the present application, the first elastic member 4332 is a torsion spring, which has a certain deformation ability. The elastic force direction of the first elastic member 4332 is fixed on the inner wall of the sliding groove 4219 away from the outer wall of the limiting ring 433, and the elastic force of the first elastic member 4332 drives the limiting ring 433 to slide in a direction away from the spraying plate 44.

[0054] Refer to Figure 2, an opening and closing component 434 for controlling the opening and closing of the communication hole 432 is connected to the heating plate 43. A sliding groove 4321 for accommodating the opening and closing component 434 is coaxially provided on the hole wall of the communication hole 432. The opening and closing component 434 includes a second thermo - expansion and contraction block 4341 and an opening and closing block 4342. In the embodiment of the present application, the material of the second thermo - expansion and contraction block 4341 is nylon, which has a certain deformation ability; both ends of the second thermo - expansion and contraction block 4341 are fixed on the inner wall of the sliding groove 4321 and the outer wall of the opening and closing block 4342. A through - groove 43421 for the flow of clear water is provided on the outer wall of the opening and closing block 4342. The through - groove 43421 penetrates through both outer walls of the opening and closing block 4342, and the length direction of the through - groove 43421 is parallel to the axis of the water inlet end 4322. The opening and closing block 4342 is used to close the water inlet end 4322.

[0055] Refer to Figure 2 , a second elastic member 43422 is fixed to the outer wall of the opening and closing block 4342 away from the second thermo - expansion and contraction block 4341. The second elastic member 43422 can be a compression spring or a torsion spring. In the embodiment of the present application, the second elastic member 43422 is a torsion spring, which has a certain deformation ability. The elastic force direction of the second elastic member 43422 is away from the outer wall of the opening and closing block 4342 and is fixed on the inner wall of the sliding groove 4321. The elastic force of the second elastic member 43422 drives the opening and closing block 4342 to slide along the inner wall of the sliding groove 4321 until the opening and closing block 4342 closes the communication hole 432.

[0056] Refer to Figure 2 , when the second thermo - expansion and contraction block 4341 is heated and deformed, the second thermo - expansion and contraction block 4341 drives the opening and closing block 4342 to slide along the groove wall of the sliding groove 4321 and connects the water inlet end 4322 with the through - groove 43421. The clear water in the heating cavity 4211 sequentially passes through the water inlet end 4322, the through - groove 43421, the water outlet end 4323 and enters the air outlet cavity 4212 from the ventilation hole 431. The clear water in the air outlet cavity 4212 enters the water outlet pipe from the water inlet hole 442 along the end face of the spraying plate 44 and accumulates in the temporary storage box 41, realizing the collection of the clear water from which weak electrolytes are removed.

[0057] The implementation principle of an EFDT high-efficiency desalination device in an embodiment of the present application is as follows: The first water pump 11 drives the clear water in the clear water tank 1 to enter the EFDT purifier 2 through a pipeline. The EFDT purifier 2 filters the impurities in the clear water, reduces the conductivity of the clear water, and realizes the preliminary impurity removal of the clear water. The preliminarily impurity-removed clear water enters the EFDT cation bed 3 through a pipeline. The EFDT cation bed 3 removes the cations in the clear water. The clear water with cations removed enters the heating chamber 4211 from the water inlet channel 4215. The heating plate 43 heats the clear water, accelerating the reaction between carbonate ions and hydrogen ions in the clear water to generate carbon dioxide and water. The first thermal expansion and contraction block 4331 expands due to temperature rise. The first thermal expansion and contraction block 4331 drives the heating plate 43 to slide towards the spraying plate 44. The outer wall of the nozzle 46 squeezes the elastic block 4311 to deform and connects the heating chamber 4211 to the air outlet chamber 4212. The gas sprayed by the nozzle 46 enters the heating chamber 4211 from the ventilation hole 431. The gas impacts the outer wall of the hollow ball 8 and diffuses along the outer wall of the hollow ball 8, increasing the contact area between the gas and the clear water, and increasing the efficiency of the gas carrying carbon dioxide in the clear water to be discharged from the air outlet pipeline, thereby improving the desalination efficiency of the clear water. At the same time, the second thermal expansion and contraction block 4341 deforms due to temperature rise. The second thermal expansion and contraction block 4341 drives the opening and closing block 4342 to slide along the inner wall of the sliding groove 4321 to the through groove 43421 to connect the communication hole 432. The clear water in the heating chamber 4211 sequentially passes through the communication hole 432, the through hole and enters the ventilation hole 431, thereby increasing the contact area between the gas and the clear water and further improving the desalination efficiency of the clear water.

[0058] The clear water with weak electrolytes removed enters the temporary storage tank 41 through a pipeline. The second water pump 411 drives the clear water in the temporary storage tank 41 to enter the EFDT anion bed 5. The EFDT anion bed 5 removes the anions in the clear water. The clear water with anions removed enters the mixed bed 6 through a pipeline. The mixed bed 6 removes and exchanges the cations and anions in the clear water, thereby reducing the hardness of the clear water and obtaining deionized pure water. The third water pump 61 drives the deionized pure water in the mixed bed 6 to enter the storage tank 7 through a pipeline, realizing the collection of deionized pure water. By removing anions and cations in the clear water step by step, the desalination efficiency of the clear water is improved.

[0059] The above are all the preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. The EFDT high-efficiency desalination device includes a clean water tank (1), an EFDT purifier (2), an EFDT cation bed (3), a decarbonator (4), an EFDT anion bed (5), a mixed bed (6), and a storage water tank (7). The clean water tank (1), the EFDT purifier (2), the EFDT cation bed (3), the decarbonator (4), the EFDT anion bed (5), the mixed bed (6), and the storage water tank (7) are sequentially connected through pipelines. It is characterized in that: The decarbonator (4) includes a housing (42). An accommodation cavity (421) is formed inside the housing (42). A heating plate (43) and a spraying plate (44) are arranged on the inner wall of the accommodation cavity (421). The heating plate (43) and the spraying plate (44) divide the accommodation cavity (421) into a heating cavity (4211), an air outlet cavity (4212), and an air inlet cavity (4213). The heating cavity (4211) is located on the side of the heating plate (43) away from the spraying plate (44). An inlet water channel (4215) for clean water to enter is formed on the inner wall of the heating cavity (4211). The heating plate (43) is used to heat the clean water. The air outlet cavity (4212) is located between the heating plate (43) and the spraying plate (44). The air inlet cavity (4213) is located on the side of the spraying plate (44) away from the heating plate (43). A plurality of nozzles (46) for jetting air are arranged on the end face of the spraying plate (44) facing the heating plate (43). A plurality of ventilation holes (431) for gas to pass through are formed on the plate surface of the heating plate (43). The plurality of ventilation holes (431) are correspondingly oriented towards the plurality of nozzles (46). An air outlet channel (4217) for gas to discharge is formed on the inner wall of the heating cavity (4211). A plurality of elastic blocks (4311) are arranged on the circumferential hole wall of the ventilation hole (431). The plurality of elastic blocks (4311) are spliced to form a circular plate and close the ventilation hole (431). An outlet water channel (4218) for clean water to discharge is formed on the inner wall of the air outlet cavity (4212). When the nozzles (46) jet air, the gas drives the elastic blocks (4311) to deform and connect the heating cavity (4211) with the air outlet cavity (4212); the air outlet channel (4217) is connected to the inlet water channel (4215); it further includes a plurality of hollow balls (8). The plurality of hollow balls (8) are located in the heating cavity (4211); a limiting strip (81) is arranged between the hollow ball (8) and the heating plate (43). Both ends of the limiting strip (81) are arranged on the outer wall of the hollow ball (8) and the plate surface of the heating plate (43). The projection of the hollow ball (8) on the heating plate (43) partially covers the ventilation hole (431); the limiting strip (81) is a thermally expandable and contractible strip.

2. The EFDT high-efficiency desalination device according to claim 1, It is characterized in that: A limiting ring (433) is provided on the outer wall of the heating plate (43). A sliding groove (4219) for the limiting ring (433) to slide is provided on the inner wall of the accommodating cavity (421). The length direction of the sliding groove (4219) is towards or away from the spraying plate (44). A first thermo - expansion and contraction block (4331) is provided on the inner wall of the sliding groove (4219). The end of the first thermo - expansion and contraction block (4331) away from the inner wall of the sliding groove (4219) is arranged on the limiting ring (433). When the first thermo - expansion and contraction block (4331) is heated and deformed to drive the heating plate (43) to slide towards the spraying plate (44), the outer peripheral wall of the nozzle (46) squeezes the elastic block (4311) to deform and connects the heating cavity (4211) with the air outlet cavity (4212).

3. The EFDT high - efficiency desalination device according to claim 2, characterized in that: A plurality of communication holes (432) for clean water to enter the air outlet cavity (4212) are provided on the heating plate (43). The plurality of communication holes (432) are in one - to - one correspondence with the ventilation holes (431). An opening and closing assembly (434) for controlling the opening and closing of the communication holes (432) is provided on the heating plate (43). A sliding groove (4321) for accommodating the opening and closing assembly (434) is provided on the pore wall of the communication hole (432). The opening and closing assembly (434) includes a second thermo - expansion and contraction block (4341) and an opening and closing block (4342). A through - groove (43421) for clean water to pass through is provided on the opening and closing block (4342). Both ends of the second thermo - expansion and contraction block (4341) are fixed on the inner wall of the sliding groove (4321) and the outer wall of the opening and closing block (4342). When the second thermo - expansion and contraction block (4341) is heated and deformed to drive the opening and closing block (4342) to slide until the through - groove (43421) communicates with the communication hole (432).

4. The EFDT high - efficiency desalination device according to claim 1, characterized in that: A waterproof and breathable membrane (461) is provided at the spraying end of the nozzle (46). The waterproof and breathable membrane (461) is used to prevent the clean water in the ventilation hole (431) from entering the inner cavity of the nozzle (46).

5. The EFDT high - efficiency desalination device according to claim 1, characterized in that: A heating layer (4216) is provided on the inner wall of the heating cavity (4211). Electric heating wires are embedded in the heating layer (4216).

6. The EFDT high - efficiency desalination device according to claim 3, characterized in that: A first elastic member (4332) is provided on the inner wall of the sliding groove (4321). The end of the first elastic member (4332) away from the inner wall of the sliding groove (4321) is arranged on the limiting ring (433). The elastic force of the first elastic member (4332) has a tendency to drive the heating plate (43) to slide in a direction away from the spraying plate (44).

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