Seawater desalination equipment based on solar energy

Abstract

The invention relates to the technical field of seawater desalination equipment, and discloses seawater desalination equipment based on solar energy, a distillation assembly comprises a distiller and a condensation cylinder, a condensation pipe is mounted in the condensation cylinder, an electromagnetic eddy current heater is fixedly assembled at the bottom of the distiller, a salt blocking assembly is fixedly assembled on the inner side wall of the distiller, and a water inlet is formed in the inner side wall of the distiller. A soaking assembly is fixedly installed at the bottom of the salt blocking assembly, a driving assembly matched with the salt blocking assembly is assembled on the outer side wall of the soaking assembly, and the soaking assembly can accelerate the uniform mixing speed of seawater, prevent salt from being brought out due to too high speed when the seawater is heated, improve the quality of distilled steam and meanwhile, improve the quality of the distilled steam. The driving assembly drives the salt blocking assembly to act, the working state of the salt blocking assembly can be adjusted in real time when the salinity changes, the situation that in the seawater crystallization and separation process, due to the fact that the salinity concentration is large, more salt is carried in steam can be effectively solved, and the interception efficiency of the salt in distillation when the seawater salinity is increased is improved.

Description

Technical Field

[0001] The invention relates to the technical field of seawater desalination equipment, and in particular to seawater desalination equipment based on solar energy. Background Art

[0002] With the rapid increase of world population and the rapid development of industrialization, the demand for fresh water will increase sharply. The shortage of fresh water is a serious problem that many countries must face in the future. Commonly used seawater desalination methods such as ion exchange, electrodialysis, reverse osmosis membrane, etc., consume a lot of electricity and fuel. At present, the market tends to use clean energy to generate electricity, and then use electrodialysis or membrane osmosis to desalinate seawater. The system for producing fresh water is complex and inefficient, and energy cannot be used directly.

[0003] The application number is CN201210149524.8, which is a device for desalinating seawater using clean energy. The device is composed of a power generation device, a heating component, a solar collector, a distiller and a fresh water collector. The heating component uses an electromagnetic eddy current heating device and an electric heating wire device to heat the distiller to prepare fresh water according to the different energy sources used. One end of the solar collector is connected to the seawater inlet, and the other end is connected to the distiller, so that the incoming seawater will first be heated by the solar collector, and then flow into the distiller to evaporate and produce fresh water. The whole device effectively uses clean energy to heat seawater.

[0004] In actual use, during the heating process, some of the salt in the seawater may form tiny particles and be evaporated along with the water vapor. In addition, if the heating speed is too fast or uneven, some seawater may form water droplets with salt before it is fully evaporated and be brought into the steam, which will seriously affect the quality of the fresh water after distillation. At the same time, as the water content of seawater decreases, crystallization gradually begins to occur. High-salinity seawater is more likely to form salt crystals during the evaporation process. These crystals may be brought into the steam, affecting the quality of the desalinated water. The higher the salinity of seawater, the higher its boiling point and the lower the evaporation pressure. A higher temperature is required to achieve the same evaporation effect. When the steam temperature increases, the density of the steam decreases, the molecular movement speed increases, and the salt is more likely to form tiny particles, which will cause more salt particles to be brought into the steam. In addition, during the crystallization process, the amount of salt scale in the distiller increases, greatly reducing the heat transfer efficiency of the distiller. In order to achieve the purpose of distillation, energy consumption will be further increased.

[0005] Therefore, the present invention proposes a seawater desalination device based on solar energy to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a seawater desalination device based on solar energy to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a seawater desalination device based on solar energy, comprising a distillation component, the distillation component comprising a distiller and a condenser cylinder, a guide tube is fixedly mounted on the top of the distiller, a condenser is installed inside the condenser cylinder, the top of the condenser tube is connected to the guide tube, an electromagnetic eddy current heater is fixedly mounted on the bottom of the distiller, a salt retaining component is fixedly mounted on the inner side wall of the distiller, a heat-saturating component is fixedly mounted on the bottom of the salt retaining component, and a driving component matching the salt retaining component is mounted on the outer side wall of the heat-saturating component;

[0008] The salt-blocking assembly includes a fixed shaft fixed on the inner wall of the distiller, and both ends of the fixed shaft are integrally provided with fixed plates fixed on the inner wall of the distiller. The left and right side walls of the fixed shaft are hingedly installed with outer salt-blocking plates, and each group of the outer salt-blocking plates is evenly provided with guide channels that pass through from top to bottom. The outer salt-blocking plates are slidably equipped with inner salt-blocking plates, and the inner salt-blocking plates are evenly provided with guide grooves corresponding to the guide channels. A pushing member is installed between the inner salt-blocking plates and the inner side walls of the outer salt-blocking plates.

[0009] Preferably, the salt baffle assembly also includes a spoiler seat fixed on the inner wall of the distiller, and the spoiler seat is arranged above the outer salt baffle plate, each group of outer salt baffle plates is a semicircular plate, and each group of outer salt baffle plates is assembled between the front and rear groups of fixed plates, a hinge ear is fixed on the outer wall of the fixed shaft, and each group of outer salt baffle plates is hingedly installed on the hinge ear through a hinge shaft, and each group of outer salt baffle plates is attached to the outer wall of the fixed shaft.

[0010] Preferably, the guide channel is an elliptical channel, and the guide channel is opened along the length direction of the outer salt baffle plate, and the guide groove is a circular groove, and the guide groove and the guide channel correspond one to one.

[0011] Preferably, the driving assembly includes a fixed cylinder fixed in the middle of the bottom of the fixed shaft, an annular electromagnet is fixed on the top of the outer wall of the fixed cylinder, a magnet ring matching the annular electromagnet is slidably mounted on the bottom of the outer wall of the fixed cylinder, a pressure-bearing part is mounted between the magnet ring and the annular electromagnet, push rods are fixed on the left and right side walls of the magnet ring, and rollers are installed on the ends of each group of push rods.

[0012] Preferably, the pressure-bearing member and the two groups of pushing members are rubber air bags, and the pressure-bearing member is connected to the two groups of pushing members through two groups of air guide tubes respectively, and the two groups of air guide tubes are equipped with a first solenoid valve.

[0013] Preferably, each group of the push rods corresponds to an outer salt baffle plate, a slideway is provided on the outer side wall of the fixed cylinder, and a sliding block matching the slideway is fixed on the inner side wall of the magnet ring.

[0014] Preferably, when the magnet ring is at the lowest end position, the outer salt baffle plate is placed on the roller at the end of the push rod, and the inclination angle of the outer salt baffle plate relative to the horizontal plane is W1. When the magnet ring is at the highest end position, the outer salt baffle plate is placed on the roller at the end of the push rod, and the inclination angle of the outer salt baffle plate relative to the horizontal plane is W2.

[0015] Preferably, the heat equalizing assembly includes a driving motor fixed inside a fixed cylinder, and the output shaft of the driving motor extends out of the fixed cylinder and is fixedly installed with a rotating shaft, and connecting seats are evenly fixed on the outer wall of the rotating shaft, and a heat equalizing plate is fixed on the outer wall of each group of connecting seats, and a supporting seat is rotatably installed at the bottom of the inner cavity of the distiller, and the bottom end of the rotating shaft is assembled with an electromagnetic locking assembly and the supporting seat, a slag cleaning rod is fixed on the outer wall of the supporting seat, and a scraper is fixedly installed on the end of each group of slag cleaning rods.

[0016] Preferably, the distillation assembly also includes a water inlet pipe connected to the distiller, a slag collecting channel is provided on the distiller, a slag cleaning door corresponding to the slag collecting channel is installed on the front side wall of the distiller, a bracket is fixed to the bottom of the condensation cylinder, and a drain pipe is connected to the bottom end of the condensation tube.

[0017] Preferably, it also includes a solar photovoltaic power generation component, and the electrical output of the solar photovoltaic power generation component is connected to the electromagnetic eddy current heater.

[0018] Technical effects and advantages of the present invention:

[0019] The salinity sensor in the present invention can monitor the salt concentration of seawater in the distiller in real time, so that the salt concentration can be monitored in real time during the seawater distillation process, so as to understand the distillation progress of seawater in real time, and thus the working state of the salt retaining component can be adjusted in real time when the salinity changes. This can effectively solve the problem of carrying more salt in the steam due to the high salt concentration during the crystallization of seawater, and can intercept the distilled salt, thereby improving the interception efficiency of salt in the distillation when the seawater salinity increases. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the present invention in a first viewing angle as a whole;

[0022] Figure 3 It is a schematic diagram of the structure of the second viewing angle of the overall cross-section of the present invention;

[0023] Figure 4 It is a schematic structural diagram of the overall cross-section of the present invention from a third viewing angle;

[0024] Figure 5 This is a schematic diagram of the assembly structure of the salt retaining assembly, the heat soaking assembly and the driving assembly of the present invention;

[0025] Figure 6 This is a schematic diagram of the working state structure of the salt retaining assembly of the present invention;

[0026] Figure 7 This is a schematic diagram of the cross-sectional structure of the salt retaining assembly and the driving assembly of the present invention;

[0027] Figure 8 This is a schematic diagram of the overall structure of the outer salt retaining plate of the present invention;

[0028] Fig. 9 The figure is a schematic diagram of the explosion structure of the outer salt retaining plate and the inner salt retaining plate of the present invention.

[0029] In the figure: 10, distillation assembly; 11, distiller; 12, guide tube; 13, bracket; 14, condenser cylinder; 15, condenser tube; 16, slag cleaning door; 17, water inlet pipe; 18, drain pipe; 19, electromagnetic eddy current heater; 20, salt retaining assembly; 21, fixed shaft; 22, fixed plate; 23, outer salt retaining plate; 24, guide channel; 25, inner salt retaining plate; 26, guide groove; 27, pusher; 28, spoiler seat; 30, heat equalization assembly; 31, rotating shaft; 32, connecting seat; 33, heat equalization plate; 34, supporting seat; 35, slag cleaning rod; 36, scraper; 40, driving assembly; 41, fixed cylinder; 42, annular electromagnet; 43, magnet ring; 44, pressure-bearing member; 45, push rod; 46, roller. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 9As shown, this embodiment discloses a seawater desalination device based on solar energy, including a distillation component 10, the distillation component 10 includes a distiller 11 and a condenser cylinder 14, a guide tube 12 is fixedly installed on the top of the distiller 11, a condenser tube 15 is installed inside the condenser cylinder 14, the top of the condenser tube 15 is connected to the guide tube 12, an electromagnetic eddy current heater 19 is fixedly installed at the bottom of the distiller 11, the distillation component 10 also includes a water inlet pipe 17 connected to the distiller 11, a slag collection channel is opened on the distiller 11, a slag cleaning door 16 corresponding to the slag collection channel is installed on the front side wall of the distiller 11, a bracket 13 is fixed to the bottom of the condenser cylinder 14, and a drain pipe 18 is connected to the bottom of the condenser tube 15. When actually used, water is discharged into the distiller 11 through the water inlet pipe 17. The desalination equipment also includes a solar photovoltaic power generation component, and the electrical output of the solar photovoltaic power generation component is connected to the electromagnetic eddy current heater 19, which can use solar energy to generate electricity. At the same time, the electricity generated is applied to the electromagnetic eddy current heater 19, so that it heats the seawater inside the distiller 11, which has good economic benefits. It uses solar energy to generate electricity and effectively uses clean energy to heat seawater, thereby improving the efficiency of fresh water production without generating any pollution. After the distillation of the distiller 11 is completed, the steam enters the condenser 15 along the guide pipe 12. The condenser 14 has built-in cold water, which can wrap the condenser 15 in all directions, increase the cooling speed after the steam is introduced into the condenser 15, and facilitate the steam to be discharged from the drain pipe 18 for collection after condensation.

[0032] It is worth noting that before introducing the seawater into the distiller 11, the seawater can be pre-treated to reduce the salt concentration of the seawater through activated carbon adsorption to reduce the risk of scaling and salt carryout. In addition, the water discharged from the drain pipe 18 can be further treated by activated carbon adsorption to remove residual salt and organic matter and ensure the water quality of the desalinated water.

[0033] See also Figure 2-Figure 4A salt blocking component 20 is fixedly mounted on the inner wall of the distiller 11, a heat-saturating component 30 is fixedly mounted on the bottom of the salt blocking component 20, and a driving component 40 matching the salt blocking component 20 is mounted on the outer wall of the heat-saturating component 30. When the heat-saturating component 30 is working, it can drive the seawater inside the distiller 11 to rotate, so that when the electromagnetic eddy current heater 19 is heated, the seawater can be more evenly stabilized, and the salt will not be brought out with the steam due to excessive temperature rise when the seawater is heated. Therefore, the heat-saturating component 30 can ensure the uniformity of the seawater temperature, control the heating and evaporation speed of the seawater, and avoid splashing of the seawater. The distiller 11 has a built-in salinity sensor, which can monitor the salt concentration of the seawater in the distiller 11 in real time. In this way, the salt concentration can be monitored in real time during the distillation of seawater, so as to understand the distillation progress of the seawater in real time. When the salinity changes, the working state of the salt-blocking component 20 can be adjusted in real time to intercept the distilled salt, thereby improving the interception efficiency of salt in the distillation when the seawater salinity increases. When seawater is distilled through the distiller 11, the salt-blocking component 20 can disturb the steam and change the speed and direction of the steam, causing the salt included in the steam to collide with the salt-blocking component 20. The water droplets containing salt are intercepted by the impact. At the same time, when the driving component 40 is in operation, the salt-blocking component 20 can be driven to deflect at an angle, thereby increasing the contact area between the water droplets and the salt-blocking component 20 and improving the interception efficiency. The salt-blocking component 20 acts as a condensation nucleus, causing the water droplets containing salt to condense into larger water droplets on the surface of the salt-blocking component 20, thereby making it easier to settle. This condensation effect can effectively reduce the chance of salt entering the condenser 15 with the steam.

[0034] See also Figure 2-Figure 7 The salt blocking assembly 20 includes a fixed shaft 21 fixed to the inner wall of the distiller 11, and the two ends of the fixed shaft 21 are integrally provided with fixed plates 22 fixed to the inner wall of the distiller 11. The left and right side walls of the fixed shaft 21 are hingedly installed with outer salt blocking plates 23, and each group of outer salt blocking plates 23 is evenly provided with a guide channel 24 that runs through from top to bottom. The inner salt blocking plates 25 are slidably mounted inside the outer salt blocking plates 23, and the inner salt blocking plates 25 are evenly provided with guide grooves 26 corresponding to the guide channels 24. The inner salt blocking plates 25 and A pushing member 27 is installed between the inner walls of the outer salt baffle plates 23. The salt baffle assembly 20 also includes a spoiler seat 28 fixed on the inner wall of the distiller 11, and the spoiler seat 28 is arranged above the outer salt baffle plates 23. Each group of outer salt baffle plates 23 is a semicircular plate, and each group of outer salt baffle plates 23 is assembled between the front and rear groups of fixed plates 22. A hinge ear is fixed on the outer wall of the fixed shaft 21, and each group of outer salt baffle plates 23 is hingedly installed on the hinge ear through a hinge shaft, and each group of outer salt baffle plates 23 is attached to the outer wall of the fixed shaft 21.

[0035] The salt blocking assembly 20 is arranged inside the distiller 11, and can guide the steam distilled from the distiller 11 in real time. The fixed plate 22 blocks the steam, and the outer salt blocking plate 23 can intercept most of the salt-containing water droplets in the steam. The cooperation between the outer salt blocking plate 23 and the inner salt blocking plate 25 can make the steam flow out from the guide channel 24 and the guide groove 26, and the steam is introduced into the guide groove 26 from the lower guide channel 24. In this way, the inner salt blocking plate 25 corresponding to the guide channel 24 can block the steam, and the salt-containing water droplets can accumulate at the bottom of the inner salt blocking plate 25 and condense into larger water droplets, thereby promoting the steam to flow out from the guide channel 24. The flow groove 26 flows out, enhancing the turbulence effect of the steam, and when the pushing member 27 pushes the inner salt baffle plate 25 to move inside the outer salt baffle plate 23, the guide groove 26 can be moved synchronously, so that the different positions of the guide groove 26 and the guide channel 24 correspond to each other, which can change the direction of steam passing, enhance the turbulence effect of the steam, and improve the blocking efficiency of salt-containing water droplets. When the inner salt baffle plate 25 moves, the fit between the inner salt baffle plate 25 and the outer salt baffle plate 23 can be used to scrape off the salt-containing water droplets on the surface of the inner salt baffle plate 25. At the same time, if crystals are precipitated, the crystals can be scraped off to cause the crystals to fall directly into the seawater for easy precipitation.

[0036] It is worth noting that the guide channel 24 is an elliptical channel, and the guide channel 24 is opened along the length direction of the outer salt baffle plate 23, and the guide groove 26 is a circular groove, and the guide groove 26 and the guide channel 24 correspond one to one. When the inner salt baffle plate 25 moves, the guide groove 26 can move along the guide channel 24, so that the guide groove 26 and the guide channel 24 correspond to different positions, which can change the direction of steam passage, enhance the turbulence effect of steam, and improve the blocking efficiency of salt droplets.

[0037] See also Figure 5-Figure 7 The driving assembly 40 includes a fixed cylinder 41 fixed in the middle of the bottom of the fixed shaft 21, an annular electromagnet 42 is fixed on the top of the outer wall of the fixed cylinder 41, a magnet ring 43 matching the annular electromagnet 42 is slidably mounted on the bottom of the outer wall of the fixed cylinder 41, a pressure-bearing member 44 is mounted between the magnet ring 43 and the annular electromagnet 42, push rods 45 are fixed on the left and right side walls of the magnet ring 43, and a roller 46 is installed at the end of each group of push rods 45, each group of push rods 45 corresponds to the outer salt baffle 23, a slideway is opened on the outer wall of the fixed cylinder 41, and a slider matching the slideway is fixed on the inner wall of the magnet ring 43.

[0038] When the magnet ring 43 is at the lowest end, the outer salt baffle plate 23 is placed on the roller 46 at the end of the push rod 45, and the inclination angle of the outer salt baffle plate 23 relative to the horizontal plane is W1. In this embodiment, W1 is set to 45°. When the magnet ring 43 is at the highest end, the outer salt baffle plate 23 is placed on the roller 46 at the end of the push rod 45, and the inclination angle of the outer salt baffle plate 23 relative to the horizontal plane is W2. In this embodiment, W2 is set to 10°. Therefore, when the annular electromagnet 42 is energized to generate a magnetic repulsive force on the magnet ring 43, the magnet ring 43 is pushed to move downward in the fixed cylinder 41, driving the fixed cylinder 41 to move from the uppermost end to the lowermost end, so that the outer salt baffle plate 23 flips around the hinge axis and continues to flip downward as the push rod 45 moves downward. The outer salt baffle 23 is rotated, and the passage between the outer salt baffle 23 and the inside of the distiller 11 becomes larger, which facilitates the circulation of steam. When the annular electromagnet 42 is energized to generate a magnetic attraction to the magnet ring 43, the magnet ring 43 can be prompted to move up on the fixed cylinder 41, thereby driving the push rod 45 to move up, which facilitates the magnet ring 43 to move from the lower end to the upper end. The push rod 45 can drive the outer salt baffle 23 to flip upward, thereby reducing the passage between the outer salt baffle 23 and the inside of the distiller 11, and can enhance the turbulence effect on the steam, which is convenient for real-time adjustment according to the salt concentration of seawater. The angle of the outer salt baffle 23 can be changed in real time according to the change of the salt concentration of seawater to enhance the turbulence effect on the steam and improve the interception efficiency of salt.

[0039] It is worth noting that the pressure-bearing member 44 and the two groups of pushing members 27 are both rubber air bags, and the pressure-bearing member 44 is connected to the two groups of pushing members 27 through two groups of air guide tubes, and the two groups of air guide tubes are equipped with a first solenoid valve, and an exhaust hole is opened on the pushing member 27, and a second solenoid valve is fixedly installed in the exhaust hole. When the first solenoid valve is opened and the second solenoid valve is closed, the annular electromagnet 42 is energized to drive the magnet ring 43 to move upward, which can squeeze the pressure-bearing member 44, prompting the gas inside the pressure-bearing member 44 to be introduced into the pushing member 27 through the air guide tube, prompting the pushing member 27 to expand, and then can push the inner salt baffle plate 25 to move inside the outer salt baffle plate 23, prompting the guide groove 26 and the guide channel 24 to correspond to different positions, thereby increasing the turbulence effect on the steam.

[0040] It is worth noting that when the first solenoid valve and the second solenoid valve are opened synchronously, the gas inside the pressure-bearing member 44 is introduced into the interior of the pushing member 27 through the air duct, and is discharged from the exhaust hole on the pushing member 27 at the same time, so that the gas is directly discharged from the interior of the outer salt-blocking plate 23 and the guide channel 24. In this way, the gas can collide with the steam, increase the number of salt collisions, increase the path length and collision chance of the steam, and effectively intercept the salt particles attached to the distilled steam when the salt concentration of seawater is high.

[0041] When the annular electromagnet 42 is energized to drive the magnet ring 43 downward, the pressure-bearing member 44 is stretched. At this time, the gas inside the second distiller 11 enters the push member 27 through the exhaust hole, and then enters the push member 27 through the air duct, causing the pressure-bearing member 44 to expand and return to its original position.

[0042] See also Figure 2-Figure 6 The heat equalizing component 30 includes a driving motor fixed inside a fixed cylinder 41, and the output shaft of the driving motor extends out of the fixed cylinder 41 and is fixedly installed with a rotating shaft 31, and connecting seats 32 are evenly fixed on the outer wall of the rotating shaft 31, and a heat equalizing plate 33 is fixed on the outer wall of each group of connecting seats 32, and a supporting seat 34 is rotatably assembled at the bottom of the inner cavity of the distiller 11, and the bottom end of the rotating shaft 31 is assembled with the supporting seat 34 through an electromagnetic locking assembly, and a slag cleaning rod 35 is fixed on the outer wall of the supporting seat 34, and a scraper 36 is fixedly installed at the end of each group of slag cleaning rods 35.

[0043] When the driving motor in the heat-saturating assembly 30 is working, the heat-saturating plate 33 on the connecting seat 32 is driven to rotate through the rotating shaft 31, so that the seawater in the distiller 11 can be stirred, the speed of mixing the seawater evenly can be accelerated, and the salt can be prevented from being brought out due to excessive speed when the seawater is heated. The salt can be controlled from the heating level and the quality of the distillation steam can be improved.

[0044] During the distillation operation, the seawater is directly introduced into the distiller 11 through the water inlet pipe 17, and solar energy is used to generate electricity. The electricity generated is applied to the electromagnetic eddy current heater 19 to heat the seawater inside the distiller 11. At the same time, the distiller 11 has a built-in temperature sensor to monitor the temperature of the seawater at all times. The heat equalization component 30 can stir the seawater in the distiller 11 to accelerate the mixing speed of the seawater and prevent the salt from being brought out due to excessive speed when the seawater is heated. The temperature rise of the seawater is controlled to ensure that the temperature rise of the seawater is not large and the heating is uniform, so that the seawater can be output in a stable state when evaporating, thereby improving the quality of fresh water.

[0045] When the salinity sensor detects that the salinity of seawater in the distiller 11 is not higher than the first threshold value, it indicates that the salinity of seawater is low. Therefore, the seawater will not carry salt during distillation. At this time, the driving component 40 is at the lower end. At this time, the salt-blocking component 20 is placed on the driving component 40. At this time, the downward deflection angle of the salt-blocking component 20 is the largest, and the steam channel opening in the distiller 11 is the largest. At this time, distillation is performed in a state of maximum steam output, which increases the seawater distillation speed while preventing salt from being carried in the steam.

[0046] As the seawater distillation proceeds, the salinity of the seawater gradually increases. When the seawater is distilled, the possibility of salt being taken out increases. Therefore, when the salinity sensor detects that the salinity of the seawater in the distiller 11 is higher than the first threshold value but not higher than the second threshold value, it indicates that the salinity of the seawater has increased but has not reached the state of crystallization. In this process, the salinity of the seawater increases, and its boiling point increases. At this time, the required distillation temperature increases, and the annular electromagnet 42 in the drive assembly 40 is energized, generating a magnetic attraction to the magnet ring 43, which can drive the magnet ring 43 to move upward, thereby driving the outer salt baffle 23 to flip upward through the push rod 45, thereby increasing the facing area between the outer salt baffle 23 and the steam, so that when the steam rises, it collides with the outer salt baffle 23, which can separate the water droplets with salt. The outer salt baffle 23 is placed on the roller 46 at the end of the push rod 45, and the facing area between the outer salt baffle 23 and the steam reaches the maximum. At this time, the salt in the steam is intercepted by the outer salt baffle 23, and the steam will not directly escape from the channel between the outer salt baffle 23 and the spoiler seat 28. The spoiler seat 28 can block this part of the steam and disturb the steam, so that the water droplets with salt can condense at the bottom of the spoiler seat 28, so that the salt brought out of the steam can be blocked by the salt blocking component 20, the steam can be disturbed, the moving speed of the steam can be reduced, and the moving path of the steam can be increased, so that the salt blocking component 20 has a better sedimentation effect on the salt particles in the steam.

[0047] When the salinity sensor detects that the salinity of the seawater in the distiller 11 reaches the second threshold value, it indicates that the salinity of the seawater has reached a state of crystallization. At this time, the amount of crystallization in the distiller 11 will slowly increase during the distillation process, and the heat equalization component 30 will operate to maintain the working state of stirring the seawater. At the same time, the electromagnetic locking component will operate to achieve the connection between the support seat 34 and the rotating shaft 31, so that the slag cleaning rod 35 on the support seat 34 can be driven by the rotating shaft 31 to rotate, and the crystals at the bottom of the inner cavity of the distiller 11 can be scraped to prevent the crystals from accumulating at the bottom of the distiller 11 when they precipitate. At the same time, the scraper 36 scrapes the inner wall of the distiller 11 to prevent the crystals from accumulating on the inner wall of the distiller 11 after precipitation, so that the crystals can be scraped and dropped to the bottom of the distiller 11. The annular electromagnet 42 in the driving assembly 40 regularly introduces forward current and reverse current, so that the annular electromagnet 42 can regularly generate magnetic repulsion and magnetic attraction on the magnet ring 43, which can prompt the magnet ring 43 to move up and down repeatedly on the fixed cylinder 41, thereby driving the outer salt retaining plate 23 to flip up and down regularly, and driving the salt retaining assembly 20 to swing in a "breathing" manner, thereby fanning the steam in the distiller 11, forcing the steam to be disturbed, increasing the residence time of the steam in the distiller 11, and accelerating the sedimentation of salt particles in the steam, which can effectively solve the problem of carrying more salt in the steam due to the high salt concentration during the crystallization of seawater.

[0048] During this process, when the magnet ring 43 moves upward to squeeze the pressure-bearing member 44, the gas inside the pressure-bearing member 44 is introduced into the pushing member 27 through the air duct. The pushing member 27 expands and pushes the inner salt baffle 25 to move inside the outer salt baffle 23, which can make the guide groove 26 move synchronously, so that the different positions of the guide groove 26 and the guide channel 24 correspond to each other, which can change the direction of steam passage, enhance the turbulence effect of steam, and improve the blocking efficiency of salt droplets. When the magnet ring 43 moves downward, the gas inside the pushing member 27 flows back to the pressure-bearing member 44 through the air duct, so that the guide groove 26 can be reset along the guide channel 24, thereby increasing the turbulence effect when the steam flows from the guide groove 26. In this way, when the salt content in the steam increases, the flipping of the salt blocking assembly 20 can be coordinated to change the flow direction of the steam, increase the number of collisions between salt droplets, and accelerate the precipitation of salt.

[0049] As crystals precipitate, the amount of seawater inside the distiller 11 gradually decreases, the amount of steam decreases, and the amount of salt in the steam increases. At this time, the heat equalization component 30 maintains a stirring working state, and the driving component 40 continuously drives the salt retaining component 20 to swing in a "breathing" manner, thereby fanning the steam in the distiller 11. At this time, the first solenoid valve and the second solenoid valve are opened at the same time, so that the gas inside the pressure-bearing member 44 is introduced into the pusher 27 through the air guide pipe, so that the gas inside the pusher 27 is directly discharged from the outside of the salt retaining plate 23 and the guide channel 24, so that the gas discharged from the guide groove 26 can fan the steam. Blowing is performed to increase the number of collisions between the salt in the gas and steam, and to increase the path length and collision chance of the steam. When the magnet ring 43 moves downward to drive the pressure-bearing member 44 to reset, the gas enters the pusher 27 along the second solenoid valve, and at the same time enters the pressure-bearing member 44 along the air duct, causing the pressure-bearing member 44 to expand and reset. In the continuous distillation process after the crystallization of seawater, the salt particles attached to the distilled steam are effectively intercepted, and the salt in the steam in the distiller 11 is effectively precipitated, thereby greatly improving the quality of distilled fresh water. After the distillation is completed, the crystals inside the distiller 11 are cleaned through the slag cleaning door 16.

[0050] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solar-based seawater desalination device, comprising a distillation assembly (10), characterized in that: The distillation assembly (10) comprises a distiller (11) and a condensation cylinder (14); a flow guide tube (12) is fixedly mounted on the top of the distiller (11); a condensation tube (15) is installed inside the condensation cylinder (14); the top of the condensation tube (15) is connected to the flow guide tube (12); an electromagnetic eddy current heater (19) is fixedly mounted on the bottom of the distiller (11); a salt blocking assembly (20) is fixedly mounted on the inner wall of the distiller (11); a heat equalization assembly (30) is fixedly mounted on the bottom of the salt blocking assembly (20); and a driving assembly (40) matching the salt blocking assembly (20) is mounted on the outer wall of the heat equalization assembly (30); The salt blocking assembly (20) comprises a fixed shaft (21) fixed on the inner wall of the distiller (11), and the two ends of the fixed shaft (21) are integrally provided with fixed plates (22) fixed on the inner wall of the distiller (11), and the left and right side walls of the fixed shaft (21) are both hingedly mounted with outer salt blocking plates (23), and each group of the outer salt blocking plates (23) is evenly provided with a guide channel (24) that passes through from top to bottom, and the outer salt blocking plates (23) are slidably mounted with an inner salt blocking plate (25), and the inner salt blocking plates (25) are evenly provided with guide grooves (26) corresponding to the guide channel (24), and a pusher (27) is installed between the inner salt blocking plates (25) and the inner wall of the outer salt blocking plates (23).

2. The solar-based seawater desalination device according to claim 1, characterized in that: The salt baffle assembly (20) further comprises a spoiler seat (28) fixed on the inner wall of the distiller (11), and the spoiler seat (28) is arranged above the outer salt baffle plate (23), each group of the outer salt baffle plates (23) is a semicircular plate, and each group of the outer salt baffle plates (23) is assembled between two groups of front and rear fixed plates (22), an articulated ear is fixed on the outer wall of the fixed shaft (21), and each group of the outer salt baffle plates (23) is hingedly mounted on the articulated ear through the articulated shaft, and each group of the outer salt baffle plates (23) is attached to the outer wall of the fixed shaft (21).

3. The solar-based seawater desalination device according to claim 2, characterized in that: The guide channel (24) is an elliptical channel, and the guide channel (24) is opened along the length direction of the outer salt blocking plate (23), and the guide groove (26) is a circular groove, and the guide groove (26) and the guide channel (24) correspond one to one.

4. The solar-based seawater desalination device according to claim 1, characterized in that: The driving assembly (40) comprises a fixed cylinder (41) fixed in the middle of the bottom of the fixed shaft (21), an annular electromagnet (42) is fixed on the top of the outer wall of the fixed cylinder (41), a magnet ring (43) matching the annular electromagnet (42) is slidably mounted on the bottom of the outer wall of the fixed cylinder (41), a pressure-bearing member (44) is mounted between the magnet ring (43) and the annular electromagnet (42), push rods (45) are fixed on the left and right side walls of the magnet ring (43), and a roller (46) is mounted on the end of each group of push rods (45).

5. The solar-based seawater desalination device according to claim 4, characterized in that: The pressure-bearing member (44) and the two groups of pushing members (27) are both rubber air bags, and the pressure-bearing member (44) is connected to the two groups of pushing members (27) through two groups of air guide pipes, respectively, and the two groups of air guide pipes are equipped with a first electromagnetic valve.

6. The solar-based seawater desalination device according to claim 4, characterized in that: Each group of the push rods (45) corresponds to an outer salt baffle plate (23), a slideway is provided on the outer side wall of the fixed cylinder (41), and a sliding block matching the slideway is fixed on the inner side wall of the magnet ring (43).

7. The solar-based seawater desalination device according to claim 4, characterized in that: When the magnet ring (43) is at the lowest end position, the outer salt baffle plate (23) rests on the roller (46) at the end of the push rod (45), and the outer salt baffle plate (23) has an inclination angle W1 relative to the horizontal plane. When the magnet ring (43) is at the highest end position, the outer salt baffle plate (23) rests on the roller (46) at the end of the push rod (45), and the outer salt baffle plate (23) has an inclination angle W2 relative to the horizontal plane.

8. The solar-based seawater desalination device according to claim 4, characterized in that: The heat equalizing component (30) includes a driving motor fixed inside a fixed cylinder (41), and the output shaft of the driving motor extends out of the fixed cylinder (41) and is fixedly installed with a rotating shaft (31), and connecting seats (32) are evenly fixed on the outer wall of the rotating shaft (31), and a heat equalizing plate (33) is fixed on the outer wall of each group of connecting seats (32), and a supporting seat (34) is rotatably installed at the bottom of the inner cavity of the distiller (11), and the bottom end of the rotating shaft (31) is assembled with the supporting seat (34) through an electromagnetic locking assembly, and a slag cleaning rod (35) is fixed on the outer wall of the supporting seat (34), and a scraper (36) is fixedly installed at the end of each group of slag cleaning rods (35).

9. The solar-based seawater desalination device according to claim 1, characterized in that: The distillation assembly (10) also includes a water inlet pipe (17) connected to the distiller (11); a slag collecting channel is provided on the distiller (11); a slag cleaning door (16) corresponding to the slag collecting channel is installed on the front side wall of the distiller (11); a bracket (13) is fixed to the bottom of the condensation cylinder (14); and a drain pipe (18) is connected to the bottom end of the condensation pipe (15).

10. The solar-based seawater desalination equipment according to claim 1, characterized in that: It also includes a solar photovoltaic power generation component, and the electrical output of the solar photovoltaic power generation component is connected to the electromagnetic eddy current heater (19).

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