A graphene filtration device for seawater reuse

Abstract

The present invention discloses a graphene filtering device involving seawater reuse, comprising a mounting mechanism for carrying seawater, a filtering mechanism for filtering seawater fixedly mounted inside the mounting mechanism, a connecting sealing mechanism for sealing connection fixedly connected to the bottom of the filtering mechanism, a negative pressure mechanism fixedly arranged inside the mounting mechanism, an O-ring moves downward, the space inside the slot is reduced, thereby increasing the air pressure inside the slot, as the air pressure inside the slot gradually increases, the pressure of the air pressure inside the slot on the sealing sheet increases until the sealing sheet is squeezed open, and the gas flowing out of the sealing sheet is discharged along the gap between the plug rod and the slot, during the process of gas discharge, the seawater in the gap between the plug rod and the slot is squeezed out, and the seawater is prevented from entering the gap between the plug rod and the slot, so that when the plug rod is inserted into the slot, seawater is prevented from entering the inside of the slot.

Description

Technical Field

[0001] The present invention relates to the technical field, and in particular to a graphene filtering device for seawater reuse. Background Art

[0002] Desalination is the production of fresh water by desalination of seawater. It is an open-source incremental technology for realizing the utilization of water resources. It can increase the total amount of fresh water and is not affected by time, space and climate. The water quality is good and the price is becoming more reasonable. It can ensure the stable water supply of drinking water for coastal residents and industrial boiler water replenishment. The process of obtaining fresh water from seawater is called desalination. At present, the daily output of seawater desalination in the world is about 35 million cubic meters, of which 80% is used for drinking water, solving the water supply problem of more than 100 million people, that is, 1 / 50 of the world's population relies on desalination for drinking water. There are more than 13,000 desalination plants in the world. As a substitute and incremental technology for freshwater resources, desalination is increasingly valued by many coastal countries in the world; the global direct use of seawater as industrial cooling water is about 600 billion cubic meters per year, replacing a large amount of precious freshwater resources; the world extracts 50 million tons of salt, more than 2.6 million tons of magnesium and magnesium oxide, and 200,000 tons of bromine from the ocean every year.

[0003] At present, graphene filtering devices only utilize the high-efficiency filtering characteristics of graphene, but not the high-efficiency thermal conductivity characteristics of graphene. When filtering and reusing seawater, filtering alone will reduce the efficiency of seawater filtration. When heating and evaporating the seawater, it is necessary to always pay attention to the seawater content in the filter cartridge. Because when there is less seawater in the filter cartridge, the heating device will be heated at no load, which may easily damage the heating device. It is crucial to seal the electrical connections of the heating device. If the sealing of the heating device connections is not good, leakage of electricity may easily occur at the connections, resulting in arc damage and damaging the heating device.

[0004] To this end, a graphene filtration device involving seawater reuse is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a graphene filtering device involving seawater reuse to solve the problem proposed in the above-mentioned background technology that the efficiency of seawater filtration will be reduced by filtering alone. When heating and evaporating the seawater, it is necessary to always pay attention to the seawater content in the filter cartridge. Because when there is less seawater in the filter cartridge, the heating device will be heated at no load, which may easily damage the heating device. It is crucial to seal the electrical connection of the heating device. If the sealing of the connection of the heating device is not good, it is easy to cause leakage at the connection to generate arc and damage the heating device.

[0006] To achieve the above object, the present invention provides the following technical solution: A graphene filtering device for seawater reuse, comprising a mounting mechanism for carrying seawater, the mounting mechanism comprising a filter cartridge, a sliding groove is provided inside the filter cartridge, a placement groove is provided on the top of the filter cartridge, and a water outlet pipe is fixedly connected to the bottom of the filter cartridge;

[0007] A filter mechanism for filtering seawater is fixedly installed inside the installation mechanism, and the filter mechanism includes a first filter plate, a second filter plate and a third filter plate. The third filter plate and the second filter plate are both fixedly connected to the inner wall of the filter cylinder, and the second filter plate is directly above the third filter plate;

[0008] The bottom of the filter mechanism is fixedly connected with a connection sealing mechanism for sealing connection, the connection sealing mechanism includes an elastic rod, and the elastic rod is fixedly connected to the bottom of the third filter plate, the bottom of the elastic rod is fixedly connected with a mounting plate, and the bottom of the mounting plate is fixedly connected with an insertion rod;

[0009] A negative pressure mechanism is fixedly arranged inside the mounting mechanism, and the negative pressure mechanism includes a slot, and the slot is opened inside the filter cartridge, a male plug is fixedly connected to the bottom of the slot, and two slide grooves are symmetrically opened on the inner side wall of the slot, and sliders are slidably connected inside the two slide grooves.

[0010] Preferably, a foot is fixedly connected to the bottom of the filter cartridge, a water inlet pipe is fixedly connected to the outside of the filter cartridge, a cover plate is fixedly connected to the inside of the placement groove, and an air outlet pipe is fixedly connected to the top of the cover plate.

[0011] Preferably, the first filter plate is slidably connected to the inside of the sliding groove, a connecting hole is opened inside the first filter plate, a heating wire and a controller are fixedly connected to the inside of the third filter plate, a first spring is fixedly connected between the first filter plate and the filter cylinder, and the first filter plate, the second filter plate and the third filter plate are all made of graphene.

[0012] Preferably, a sealing ring is fixedly connected to the outer side of the plug rod, and the sealing ring is fixedly connected to the bottom of the mounting plate, a magnet is fixedly connected to the bottom of the mounting plate, and a female plug is arranged inside the plug rod.

[0013] Preferably, a limiting groove is provided on the outer side of the female plug, an air outlet is provided inside the insertion rod, the air outlet is communicated with the limiting groove and the female plug respectively, and a sealing block is slidably connected inside the limiting groove.

[0014] Preferably, a groove is provided inside the filter cartridge, an iron sheet is fixedly connected inside the groove, the magnet is inserted inside the magnet, and an O-ring is fixedly connected between the two sliders.

[0015] Preferably, a through hole is opened inside the O-ring, and a sealing sheet is fixedly connected inside the through hole, the diameter of the O-ring is the same as the inner diameter of the slot, the diameter of the through hole is the same as the diameter of the male plug, and the male plug is inserted into the inside of the female plug.

[0016] Preferably, a second spring is fixedly connected between the sliding block and the sliding slot, the insert rod is inserted into the slot, and the diameter of the insert rod is the same as the inner diameter of the slot.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, since there will be a gap between the two when the plug rod enters the interior of the slot, seawater will definitely flow into the gap between the plug rod and the slot. The plug rod will first contact the O-ring and press the O-ring downward. As the O-ring moves downward, the space inside the slot is reduced, resulting in an increase in the air pressure inside the slot. As the air pressure inside the slot gradually increases, the pressure of the air pressure inside the slot on the sealing sheet increases until the sealing sheet is squeezed open. The gas flowing out of the sealing sheet will be discharged along the gap between the plug rod and the slot and push the sealing block to move upward. In the process of gas discharge, the seawater in the gap between the plug rod and the slot will be squeezed out, and the seawater can be prevented from entering the gap between the plug rod and the slot. Therefore, when the plug rod is inserted into the slot, seawater is prevented from entering the interior of the slot. When the sealing block moves upward, the gas inside the female plug and the residual seawater will be squeezed out through the air outlet.

[0019] 2. In the present invention, as the insertion rod moves downward, the male plug passes through the sealing sheet and contacts the sealing block. When the male plug passes through the sealing sheet, the sealing sheet can clean the male plug, thereby preventing seawater attached to the male plug from being inserted into the female plug to cause leakage. When the male plug contacts the sealing block, it will continue to push the sealing block upward. The upward movement of the sealing block continuously discharges the gas and residual seawater inside the female plug, and moves the sealing block to the end of the limiting groove. At this time, the sealing block will block the air outlet to prevent seawater from flowing back from the air outlet to the female plug. At this time, the male plug has been inserted into the interior of the female plug, preventing arcing or leakage caused by seawater at the connection between the male plug and the female plug;

[0020] 3. In the present invention, when the heating wire in the third filter plate is energized, a large amount of heat will be generated, and the graphene in the third filter plate has excellent thermal conductivity, so that the seawater is quickly heated, so that the seawater evaporates, and the seawater vapor is filtered through the second filter plate, and the filtered seawater vapor is discharged into the condensation box through the outlet pipe, so that the steam is condensed, and the seawater that has not been evaporated is squeezed to the first filter plate by its own gravity for filtration, and flows out through the outlet pipe. When the seawater inside the filter cartridge is almost filtered, the gravity of the residual seawater is not enough to press the first spring. At this time, the first spring will gradually reset and push the first filter plate to move up. After the first filter plate moves up, it will drive the mounting plate to move up. After the mounting plate moves up, the male plug and the female plug will be disconnected, so that the heating wire stops working due to power failure. At the same time, when the first filter plate moves up, it can prevent the remaining seawater from being unable to complete the filtration due to insufficient gravity when the amount is too low, and it can also combine the gravity of the seawater itself to accelerate the filtration speed of the first filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an internal view of the overall structure of the present invention;

[0022] Figure 2 It is a three-dimensional diagram of the overall structure of the present invention;

[0023] Figure 3 A cross-sectional view of the overall structure of the present invention;

[0024] Figure 4 It is a view of the internal structure of the present invention;

[0025] Figure 5 It is a cross-sectional view of the connection sealing mechanism of the present invention;

[0026] Figure 6 It is an enlarged view of the local structure A of the present invention;

[0027] Figure 7 It is an enlarged view of the local structure B of the present invention.

[0028] In the figure:

[0029] 1. Installation mechanism; 11. Filter cartridge; 12. Sliding slot; 13. Placement slot; 14. Water outlet pipe;

[0030] 2. Filter mechanism; 21. First filter plate; 22. Second filter plate; 23. Third filter plate; 24. Connecting hole; 25. First spring;

[0031] 3. Connecting sealing mechanism; 31. Elastic rod; 32. Mounting plate; 33. Magnet; 34. Sealing ring; 35. Inserting rod; 36. Female plug; 37. Limiting groove; 38. Air outlet; 39. Sealing block;

[0032] 4. Negative pressure mechanism; 41. Socket; 42. Male plug; 43. Groove; 44. Slide; 45. Slider; 46. O-ring; 47. Sealing sheet; 48. Second spring;

[0033] 5. Base; 6. Cover plate; 7. Water inlet pipe; 8. Air outlet pipe. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 7 , the present invention provides a technical solution of a graphene filtration device for seawater reuse:

[0036] A graphene filtering device for seawater reuse includes a mounting mechanism 1 for carrying seawater, wherein the mounting mechanism 1 includes a filter cartridge 11, wherein a sliding groove 12 is provided inside the filter cartridge 11, a placement groove 13 is provided at the top of the filter cartridge 11, and a water outlet pipe 14 is fixedly connected to the bottom of the filter cartridge 11;

[0037] A filter mechanism 2 for filtering seawater is fixedly installed inside the installation mechanism 1. The filter mechanism 2 includes a first filter plate 21, a second filter plate 22 and a third filter plate 23. The third filter plate 23 and the second filter plate 22 are both fixedly connected to the inner wall of the filter cylinder 11, and the second filter plate 22 is directly above the third filter plate 23.

[0038] The bottom of the filter mechanism 2 is fixedly connected with a connection sealing mechanism 3 for sealing connection, the connection sealing mechanism 3 includes an elastic rod 31, and the elastic rod 31 is fixedly connected to the bottom of the third filter plate 23, the bottom of the elastic rod 31 is fixedly connected with a mounting plate 32, and the bottom of the mounting plate 32 is fixedly connected with an insertion rod 35;

[0039] A negative pressure mechanism 4 is fixedly arranged inside the mounting mechanism 1, and the negative pressure mechanism 4 includes a slot 41, and the slot 41 is opened inside the filter cartridge 11, a male plug 42 is fixedly connected to the bottom of the slot 41, and two slide grooves 44 are symmetrically opened on the inner side wall of the slot 41, and sliders 45 are slidably connected inside the two slide grooves 44.

[0040] During operation: seawater is introduced into the bottom of the filter cartridge 11 through the water inlet pipe 7. Since the height of the water inlet pipe 7 is at the top of the third filter plate 23 and the water inlet volume of the water inlet pipe 7 is large, the seawater entering through the water inlet pipe 7 will directly fall into the top of the first filter plate 21. Since the water inlet volume of the water inlet pipe 7 is large, the third filter plate 23 cannot filter out the seawater quickly, so the seawater will directly press the third filter plate 23 to move downward inside the sliding groove 12. When the third filter plate 23 moves downward, it will directly drive the mounting plate 32 to move downward through the connecting hole 24. When the third filter plate 23 slides to the bottom of the sliding groove 12, it will also drive the plug rod 35 to move downward through the mounting plate 32 and plug it into the inside of the slot 41, so that the magnet 33 is adsorbed inside the groove 43.

[0041] As an embodiment of the present invention, Figures 1 to 4 As shown, the bottom of the filter cartridge 11 is fixedly connected to a base 5, the outer side of the filter cartridge 11 is fixedly connected to a water inlet pipe 7, the interior of the placement groove 13 is fixedly connected to a cover plate 6, and the top of the cover plate 6 is fixedly connected to an air outlet pipe 8.

[0042] During operation, the filtered seawater vapor will be discharged into the condensation box through the air outlet pipe 8, so that the vapor is condensed, and the unevaporated seawater will be squeezed to the first filter plate 21 by its own gravity for filtration, and flow out through the water outlet pipe 14, thereby completing the discharge of the filtered seawater.

[0043] As an embodiment of the present invention, Figures 1 to 4 As shown, the first filter plate 21 is slidably connected to the inside of the sliding groove 12, a connecting hole 24 is opened inside the first filter plate 21, a heating wire and a controller are fixedly connected to the inside of the third filter plate 23, a first spring 25 is fixedly connected between the first filter plate 21 and the filter cartridge 11, the first filter plate 21, the second filter plate 22 and the third filter plate 23 are all made of graphene, a wire is arranged inside the elastic rod 31, and the female plug 36 is electrically connected to the heating wire and the controller through the wire.

[0044] During operation, when the heating wire in the third filter plate 23 is energized, a large amount of heat will be generated, and the graphene in the third filter plate 23 has excellent thermal conductivity, so that the seawater is quickly heated, causing the seawater to evaporate. The seawater vapor will be filtered through the second filter plate 22, and the filtered seawater vapor will be discharged into the condensation box through the outlet pipe 8, thereby condensing the steam. The unevaporated seawater will be squeezed to the first filter plate 21 by its own gravity for filtration, and will flow out through the outlet pipe 14. When the seawater inside the filter cartridge 11 is almost filtered, After that, when the gravity of the residual seawater is not enough to press the first spring 25, the first spring 25 will gradually reset and push the first filter plate 21 to move upward. After the first filter plate 21 moves upward, it will drive the mounting plate 32 to move upward. After the mounting plate 32 moves upward, the male plug 42 and the female plug 36 will be disconnected, so that the heating wire stops working due to power failure. At the same time, when the first filter plate 21 moves upward, it can prevent the remaining seawater from being unable to be filtered due to insufficient gravity when the amount is too low, and can also combine the gravity of the seawater itself to speed up the filtration speed of the first filter plate 21.

[0045] As an embodiment of the present invention, Figures 1 to 7 As shown, a sealing ring 34 is fixedly connected to the outer side of the plug rod 35, and the sealing ring 34 is fixedly connected to the bottom of the mounting plate 32, and a magnet 33 is fixedly connected to the bottom of the mounting plate 32. A female plug 36 is provided inside the plug rod 35, and a limiting groove 37 is provided on the outer side of the female plug 36. An air outlet 38 is provided inside the plug rod 35, and the air outlet 38 is respectively connected to the limiting groove 37 and the female plug 36, and a sealing block 39 is slidably connected to the inside of the limiting groove 37.

[0046] During operation, the insertion rod 35 moves downward so that the male plug 42 passes through the sealing sheet 47 and contacts the sealing block 39. When the male plug 42 passes through the sealing sheet 47, the sealing sheet 47 can clean the male plug 42, thereby preventing the seawater attached to the male plug 42 from being inserted into the female plug 36 to cause leakage. When the male plug 42 contacts the sealing block 39, the sealing block 39 will continue to move upward. The upward movement of the sealing block 39 continuously discharges the gas and residual seawater inside the female plug 36, and moves the sealing block 39 to the end of the limiting groove 37. At this time, the sealing block 39 will block the air outlet 38 to prevent the seawater from flowing back from the air outlet 38 to the female plug 36. At this time, the male plug 42 has been inserted into the inside of the female plug 36 to prevent arcing or leakage caused by seawater at the connection between the male plug 42 and the female plug 36, and then the controller and the heating wire in the third filter plate 23 are energized and work through the wire.

[0047] As an embodiment of the present invention, Figures 1 to 7As shown, a groove 43 is provided inside the filter cartridge 11, an iron sheet is fixedly connected inside the groove 43, a magnet 33 is inserted inside the magnet 33, an O-ring 46 is fixedly connected between two sliders 45, a through hole is provided inside the O-ring 46, and a sealing sheet 47 is fixedly connected inside the through hole, the diameter of the O-ring 46 is the same as the inner diameter of the slot 41, the diameter of the through hole is the same as the diameter of the male plug 42, the male plug 42 is inserted into the inside of the female plug 36, a second spring 48 is fixedly connected between the slider 45 and the slide groove 44, the plug rod 35 is inserted into the inside of the slot 41, and the diameter of the plug rod 35 is the same as the inner diameter of the slot 41, a battery is arranged inside the filter cartridge 11, and the battery is electrically connected to the male plug 42 through a wire.

[0048] During operation, when the rod 35 moves down to the inside of the slot 41, there will be a gap between the two when the rod 35 enters the inside of the slot 41, and seawater will definitely flow into the gap between the rod 35 and the slot 41. The rod 35 will first contact the O-ring 46 and press the O-ring 46 to move down. As the O-ring 46 moves down, the space inside the slot 41 is reduced, resulting in an increase in the air pressure inside the slot 41. As the air pressure inside the slot 41 gradually increases, the air pressure inside the slot 41 increases the pressure on the sealing sheet 47 until the sealing sheet is squeezed open. The gas flowing out of the sealing sheet 47 will be discharged along the gap between the plug rod 35 and the slot 41 and push the sealing block 39 to move upward. In the process of gas discharge, the seawater in the gap between the plug rod 35 and the slot 41 will be squeezed out, and the seawater will be prevented from entering the gap between the plug rod 35 and the slot 41. Therefore, when the plug rod 35 is inserted into the slot 41, seawater is prevented from entering the inside of the slot 41. When the sealing block 39 moves upward, the gas inside the female plug 36 and the residual seawater will be squeezed out through the air outlet 38.

[0049] Working principle: When working, seawater is introduced into the bottom of the filter cartridge 11 through the water inlet pipe 7. Since the height of the water inlet pipe 7 is at the top of the third filter plate 23 and the water inlet volume of the water inlet pipe 7 is large, the seawater entering through the water inlet pipe 7 will directly fall into the top of the first filter plate 21. Since the water inlet volume of the water inlet pipe 7 is large, the third filter plate 23 cannot filter out the seawater quickly, so the seawater will directly press the third filter plate 23 to move downward inside the sliding groove 12. When the third filter plate 23 moves downward, it will directly drive the mounting plate 32 to move downward through the connecting hole 24. When the third filter plate 23 slides to the bottom of the sliding groove 12, it will also drive the plug rod 35 to move downward through the mounting plate 32 and plug it into the inside of the slot 41, and make the magnet 33 adsorbed inside the groove 43.

[0050] When the rod 35 moves down to the inside of the slot 41, there will be a gap between the two when the rod 35 enters the inside of the slot 41, and seawater will definitely flow into the gap between the rod 35 and the slot 41. The rod 35 will first contact the O-ring 46 and press the O-ring 46 to move down. As the O-ring 46 moves down, the space inside the slot 41 is reduced, resulting in an increase in the air pressure inside the slot 41. As the air pressure inside the slot 41 gradually increases, the air pressure inside the slot 41 increases the pressure on the sealing sheet 47 until the sealing sheet 47 is squeezed open. 7. The gas flowing out of the sealing sheet 47 will be discharged along the gap between the plug rod 35 and the slot 41 and push the sealing block 39 to move upward. In the process of gas discharge, the seawater in the gap between the plug rod 35 and the slot 41 will be squeezed out, and the seawater will be prevented from entering the gap between the plug rod 35 and the slot 41. Therefore, when the plug rod 35 is inserted into the slot 41, seawater is prevented from entering the inside of the slot 41. When the sealing block 39 moves upward, the gas inside the female plug 36 and the residual seawater will be squeezed out through the air outlet 38;

[0051] As the insertion rod 35 moves downward, the male plug 42 passes through the sealing sheet 47 and contacts the sealing block 39. When the male plug 42 passes through the sealing sheet 47, the sealing sheet 47 can clean the male plug 42, thereby preventing the seawater attached to the male plug 42 from being inserted into the female plug 36 to cause leakage. When the male plug 42 contacts the sealing block 39, the sealing block 39 will continue to move upward. The upward movement of the sealing block 39 continuously discharges the gas and residual seawater inside the female plug 36, and the sealing block 39 moves to the end of the limiting groove 37. At this time, the sealing block 39 will block the air outlet 38 to prevent the seawater from flowing back from the air outlet 38 to the female plug 36. At this time, the male plug 42 has been inserted into the inside of the female plug 36 to prevent the arc or leakage caused by the seawater at the connection between the male plug 42 and the female plug 36, and then the controller and the heating wire in the third filter plate 23 are energized and work through the wire.

[0052] When the heating wire in the third filter plate 23 is energized, a large amount of heat will be generated. The graphene in the third filter plate 23 has excellent thermal conductivity, so the seawater is quickly heated to evaporate the seawater. The seawater vapor will be filtered through the second filter plate 22, and the filtered seawater vapor will be discharged into the condensation box through the outlet pipe 8, so as to condense the steam. The unevaporated seawater will be squeezed to the first filter plate 21 by its own gravity for filtration, and will flow out through the outlet pipe 14. When the seawater inside the filter cartridge 11 is almost filtered, When the gravity of the residual seawater is not enough to press the first spring 25, the first spring 25 will gradually reset and push the first filter plate 21 to move upward. After the first filter plate 21 moves upward, it will drive the mounting plate 32 to move upward. After the mounting plate 32 moves upward, the male plug 42 will be disconnected from the female plug 36, so that the heating wire stops working due to power failure. At the same time, when the first filter plate 21 moves upward, it can prevent the remaining seawater from being unable to be filtered due to insufficient gravity when the amount is too low, and it can also combine the gravity of the seawater itself to speed up the filtration speed of the first filter plate 21.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A graphene filtration device for seawater reuse, comprising a mounting mechanism (1) for carrying seawater, characterized in that: The installation mechanism (1) comprises a filter cartridge (11), a sliding groove (12) is provided inside the filter cartridge (11), a placement groove (13) is provided on the top of the filter cartridge (11), and a water outlet pipe (14) is fixedly connected to the bottom of the filter cartridge (11); A filter mechanism (2) for filtering seawater is fixedly installed inside the mounting mechanism (1), the filter mechanism (2) comprising a first filter plate (21), a second filter plate (22) and a third filter plate (23), the third filter plate (23) and the second filter plate (22) are both fixedly connected to the inner wall of the filter cylinder (11), and the second filter plate (22) is directly above the third filter plate (23), the first filter plate (21) is slidably connected to the inside of the sliding groove (12), and a heating wire and a controller are fixedly connected to the inside of the third filter plate (23); The bottom of the filtering mechanism (2) is fixedly connected to a connection sealing mechanism (3) for sealing connection, the connection sealing mechanism (3) comprises an elastic rod (31), and the elastic rod (31) is fixedly connected to the bottom of the third filtering plate (23), the bottom of the elastic rod (31) is fixedly connected to a mounting plate (32), the bottom of the mounting plate (32) is fixedly connected to an insertion rod (35), the outer side of the insertion rod (35) is fixedly connected to a sealing ring (34), and the sealing ring (34) is fixedly connected to the bottom of the mounting plate (32), the bottom of the mounting plate (32) is fixedly connected to a magnet (33), the inside of the insertion rod (35) is provided with a female plug (36), the outer side of the female plug (36) is provided with a limiting groove (37), the inside of the insertion rod (35) is provided with an air outlet (38), the air outlet (38) is communicated with the limiting groove (37) and the female plug (36) respectively, and the inside of the limiting groove (37) is slidably connected to a sealing block (39); A negative pressure mechanism (4) is fixedly arranged inside the mounting mechanism (1), the negative pressure mechanism (4) comprising a slot (41), and the slot (41) is opened inside the filter cartridge (11), a male plug (42) is fixedly connected to the bottom of the slot (41), two slide grooves (44) are symmetrically opened on the inner side wall of the slot (41), a slider (45) is slidably connected inside the two slide grooves (44), an O-ring (46) is fixedly connected between the two sliders (45), a through hole is opened inside the O-ring (46), and a sealing sheet (47) is fixedly connected inside the through hole, the diameter of the O-ring (46) is the same as the inner diameter of the slot (41), the diameter of the through hole is the same as the diameter of the male plug (42), and the male plug (42) is plugged into the inside of the female plug (36).

2. A graphene filtration device for seawater reuse according to claim 1, characterized in that: The bottom of the filter cartridge (11) is fixedly connected to a foot (5), the outside of the filter cartridge (11) is fixedly connected to a water inlet pipe (7), the inside of the placement groove (13) is fixedly connected to a cover plate (6), and the top of the cover plate (6) is fixedly connected to an air outlet pipe (8).

3. The graphene filtration device for seawater reuse according to claim 1, characterized in that: A connection hole (24) is provided inside the first filter plate (21); a first spring (25) is fixedly connected between the first filter plate (21) and the filter cartridge (11); and the first filter plate (21), the second filter plate (22) and the third filter plate (23) are all made of graphene.

4. The graphene filtration device for seawater reuse according to claim 1, characterized in that: A groove (43) is provided inside the filter cartridge (11), an iron sheet is fixedly connected inside the groove (43), and the magnet (33) is inserted into the groove (43).

5. The graphene filtration device for seawater reuse according to claim 1, characterized in that: A second spring (48) is fixedly connected between the sliding block (45) and the sliding groove (44); the insertion rod (35) is inserted into the interior of the slot (41); and the diameter of the insertion rod (35) is the same as the inner diameter of the slot (41).

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