Water purifier with water leakage protection function

Abstract

The application discloses a water purifier with a water leakage protection function, and relates to the technical field of water purifiers. The water purifier comprises a mounting plate, a filtering assembly at the bottom end of the mounting plate, and a rear filter element assembly at the top end of the mounting plate. The filtering assembly is composed of filter element assemblies, a main detection assembly and a water leakage prevention assembly. Three filter element assemblies are arranged, and a connecting pipe is arranged between the three filter element assemblies. The main detection assembly comprises a ring block, a sliding block and a stress plate. The ring block is located in the connecting pipe, the sliding block is located in the ring block, one end of the sliding block is provided with the stress plate, a cavity is formed in the sliding block, and a connecting block is arranged in the cavity.

Description

Technical Field

[0001] This invention relates to the field of water purifier technology, specifically a water purifier with leakage protection function. Background Technology

[0002] In both residential and commercial applications, water purifiers have become crucial equipment for ensuring water quality safety. They remove impurities, odors, and ionic pollutants from water through multi-stage filtration components, providing users with clean water. Currently, most mainstream water purifiers adopt an architecture that combines pre-filter cartridges with a core membrane filtration unit. The pre-filter cartridges are often connected in series to achieve graded filtration. However, with long-term use, impurities will continuously accumulate inside the cartridges, leading to increased water flow resistance and abnormally high system water pressure. This can easily cause leaks such as aging of the cartridge seals and cracking of joints, and may also damage the core membrane component. At the same time, the accumulation of impurities will reduce water purification efficiency and may even breed bacteria, causing secondary pollution of the water.

[0003] While some existing water purifiers are equipped with leak protection functions, most are passive designs. They can only be shut down by a bottom sensor after a leak occurs. This cannot prevent the risk of leaks caused by filter cartridge clogging or increased water pressure from the source. Furthermore, there is a lack of accurate monitoring methods for the degree of impurity buildup in the filter cartridge. Users usually rely on preset replacement cycles, which is difficult to adapt to the differences in water quality in different regions. This can easily lead to filter cartridge waste or premature clogging. At the same time, the existing monitoring mechanisms cannot accurately distinguish between normal flow fluctuations and abnormalities caused by filter cartridge clogging, which is not conducive to rapid fault location. Summary of the Invention

[0004] The purpose of this invention is to provide a water purifier with leakage protection function to solve the problems mentioned in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The water purifier includes a mounting plate, a filter assembly at the bottom of the mounting plate, and a post-filter assembly at the top of the mounting plate. The filter assembly consists of a filter cartridge assembly, a main detection assembly, and a leak-proof assembly. There are three filter cartridge assemblies, and a connecting pipe is provided between the three filter cartridge assemblies. The main detection component includes a ring block, a slider, and a force plate. The ring block is located inside the connecting tube, the slider is located inside the ring block, and a force plate is provided at one end of the slider. A cavity is opened inside the slider, and a connecting block is provided inside the cavity.

[0006] Water purifiers are used to remove impurities from tap water, but the filtered impurities remain in the filter elements. Over time, these impurities accumulate, easily obstructing the normal flow rate and increasing water pressure when the water inflow remains constant. This can lead to leaks and affect normal water purification. The mounting plate serves as the installation base. The filter assembly consists of a filter cartridge assembly, a liquid delivery assembly, and a leak-proof assembly. There are three filter cartridge assemblies, forming the third purification process. Connecting pipes allow liquid to flow between components. The main detection assembly detects the impurity content within the filter cartridge assembly. The leak-proof assembly prevents leaks when excessive impurities accumulate in the filter cartridge assembly, causing increased water pressure. The ring block is located within the liquid delivery assembly, and the slider and ring block are on the same central axis.

[0007] Furthermore, the slider surface is provided with a groove, which is connected to the cavity. The two ends of the connecting block extend out of the cavity and are fixedly connected to the ring block. An elastic element is provided on the side of the connecting block away from the force plate. A positioning plate is provided on the inner wall of the cavity and is rotatably connected to the inner wall of the cavity.

[0008] The slider is connected to the ring block via a connecting block. The two ends of the connecting block pass through the groove and are connected to the slider. The elastic element is located in the cavity to provide movement space, so that the slider is in close contact with the ring block without the influence of external force. Under the influence of external force, it moves to the end away from the ring block, but does not detach from the ring block. The positioning plate is an L-shaped plate, and there are three positioning plates. When the liquid flows and passes through the ring block, the liquid flow generates impact, which will generate extrusion force on the force plate. The force plate drives the slider to move, and the movement of the slider will affect the positioning plate.

[0009] Furthermore, an electrode plate is provided on one side of the positioning plate, and a receiving plate is provided on the inner wall of the cavity. Both the electrode plate and the receiving plate are covered with a sealed cover.

[0010] Three positioning plates are provided, arranged at equal intervals. Under normal conditions, the long side of the positioning plate is flush with the inner wall of the cavity, while the short side is upright. When the slider moves, the connecting block contacts the positioning plate, pushing it to rotate. The positioning plate rotates under the push of the connecting block, changing its position so that one end of the short side is flush with the inner wall of the cavity, and the long side is upright. The electrode plate is located on the outer wall of the short side of the positioning plate, and the receiving plate is located inside the inner wall of the cavity. This shortens the distance between the electrode plate and the receiving plate, increasing the capacitance between them. The capacitance values ​​will change. When the connecting block passes the positioning plate, the capacitance values ​​of the corresponding electrode plate and receiving plate will increase. The capacitance value will remain constant when the connecting block does not pass the positioning plate. There are three positioning plates and three electrode plates. The electrode plates change due to the movement of the connecting block, and the movement of the connecting block is affected by the water flow rate. The three electrode plates represent three gears. The one closest to the elastic element is the first gear, which means that there is water flow at the position of the slider, but the flow rate is relatively slow. The middle one is the second gear, which means that there is water flow at the position of the slider and the flow rate is normal. The one furthest from the elastic element is the third gear.

[0011] Furthermore, the surface of the force plate is provided with a liquid passage hole, and the side of the slider close to the force plate is provided with a rotating groove. The rotating groove is provided with a secondary detection component, which includes a rotating rod. The end of the rotating rod away from the slider is fixedly connected to the force plate, and the rotating rod is rotatably connected to the rotating groove. The end of the rotating rod close to the slider is provided with a magnetic column, and a coil is sleeved on the magnetic column.

[0012] The force-bearing plate has several liquid passage holes arranged at an angle. When the force-bearing plate is pulled by water flow, some of the water will pass through the liquid passage holes. Due to the angled arrangement of the liquid passage holes, pressure will be generated on the liquid passage hole structure, causing the force-bearing plate to rotate. The rotation of the force-bearing plate will cause the magnetic column to rotate. Then, since the coil is sleeved on the magnetic column and one end of the coil is fixedly connected to the inner wall of the rotating groove, the magnetic column will rotate inside the coil. The magnetic force generated by the magnetic column will cut the coil and generate an induced electromotive force. The faster the water flow speed, the faster the rotating rod speed and the larger the induced electromotive force. Conversely, the slower the water flow speed, the slower the rotating rod speed and the smaller the induced electromotive force.

[0013] Furthermore, a chamber is provided at the end of the ring block away from the force plate, and the chamber is made of rubber.

[0014] The chamber is hollow and made entirely of rubber, creating a sealed environment. As the environmental pressure rises, the chamber contracts, generating internal pressure that pushes the slider outward. Even when the filter assembly is clogged, the liquid doesn't flow rapidly. However, as liquid continues to enter from the other end, the liquid density in the pipe increases, compressing the chamber. Eventually, the connecting block passes through the three positioning plates, indicating an malfunction in the water inlet.

[0015] Furthermore, the leak-proof component includes a pressure relief pipe and a valve body. One end of the pressure relief pipe is connected to a connecting pipe, and the valve body is provided on the pressure relief pipe. The valve body is electrically connected to the electrode plate.

[0016] The pressure relief pipe is connected to the connecting pipe and the flow is controlled by the valve body, which is controlled by the electrode plate. When the connecting block passes the three-position plate, the valve body works, causing the liquid in the corresponding high-pressure pipe to flow out from the pressure relief pipe and back to the input pipe of the first filter element assembly. Then, due to the decrease in liquid pressure in the pipe, the filter cartridge is prevented from leaking liquid due to high pressure. The connecting block moves back to the second or first position, at which point the valve body stops working.

[0017] Furthermore, the filter cartridge assembly has three parts, including an outer cylinder, a filter element, and a central tube. The outer cylinder is located at the bottom of the mounting plate, the central tube is located inside the outer cylinder, and the filter element is sleeved on the central tube.

[0018] The filter cartridge assembly consists of three parts, each with a different filter element used to filter out different impurities. The three filter cartridge assemblies are connected by a liquid infusion assembly. The first filter cartridge assembly has a PP cotton core filter element, which is used to intercept large particles of impurities and protect the subsequent precision filter element. The second filter cartridge assembly has a granular activated carbon cotton core filter element, which is used to remove odors, residual chlorine and some organic matter from the water. The third filter cartridge assembly has a compressed carbon filter element, which is used to further purify the water and intercept fine impurities. The external water source first passes through the first filter cartridge assembly, then through the second filter cartridge assembly, and finally through the third filter cartridge assembly. The liquid inside the filter cartridge assembly is transferred through connecting pipes.

[0019] Furthermore, the post-filter assembly includes a booster pump and a reverse osmosis membrane. One end of the booster pump is connected to a connecting pipe, and the other end of the booster pump is connected to the reverse osmosis membrane. The reverse osmosis membrane is connected to the composite unit.

[0020] The booster pump provides sufficient working pressure to the reverse osmosis membrane to ensure normal reverse osmosis filtration. The reverse osmosis membrane is used to remove ionic pollutants in the water and produce high-purity drinking water. The composite unit integrates multi-stage filtration functions and is used to finish the water flow filtration.

[0021] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses positioning plates and connections to monitor pressure and blockage levels. Three L-shaped positioning plates correspond to different working levels. When the slider moves with the water flow pressure and the blockage of the filter cartridge, it will push the positioning plates to rotate, causing the distance between the electrode plate and the receiving plate to change and the capacitance value to change. This allows for accurate judgment of the water flow rate, i.e., level one is slow flow, level two is normal, and level three is abnormally high pressure, thus identifying the problem of increased water pressure caused by the accumulation of impurities in the filter cartridge in advance.

[0022] 2. This invention guides the water flow through the liquid passage of the force plate to drive the rotating rod to rotate. The magnetic column cuts the coil to generate an induced electromotive force. The magnitude of the electromotive force is positively correlated with the water flow velocity, which can help verify the main detection results, avoid single detection errors, and ensure the accuracy of risk identification.

[0023] 3. In this invention, the rubber chamber is designed to handle extreme blockages: when the filter cartridge is severely blocked, causing the liquid to be unable to flow quickly and the pipeline pressure to rise sharply, the hollow rubber chamber is squeezed and contracted. The resulting squeezing force pushes the slider to trigger three abnormal signals, thus avoiding water leakage due to the hidden risk of low flow rate but high pressure. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the mounting plate of the present invention; Figure 3 This is a schematic diagram of the filter cartridge assembly of the present invention; Figure 4 This is a schematic diagram of the main detection component of the present invention; Figure 5 This is a schematic diagram of the slider of the present invention; Figure 6 This is a schematic diagram of the connecting block of the present invention; Figure 7 For the present invention Figure 2 Enlarged view of part A in the middle section; Figure 8 For the present invention Figure 6 A schematic diagram of the structure at point B in the middle section; Figure 9 This is a schematic diagram of the positioning plate of the present invention; Figure 10 This is a schematic diagram of the structure of the post-filter assembly of the present invention.

[0025] In the diagram: 1. Mounting plate; 2. Filter assembly; 21. Filter cartridge assembly; 211. Outer cylinder; 212. Filter element; 213. Central tube; 22. Main detection assembly; 221. Ring block; 222. Slider; 2221. Cavity; 2222. Slide groove; 2223. Rotary groove; 223. Force plate; 224. Connecting block; 225. Elastic element; 226. Positioning plate; 227. Electrode plate; 228. Receiving plate; 229. Chamber; 23. Leak-proof assembly; 231. Pressure relief pipe; 232. Valve body; 3. Post-processing assembly; 31. Booster pump; 32. Reverse osmosis membrane; 33. Composite unit; 4. Connecting pipe; 5. Secondary detection assembly; 51. Rotating rod; 52. Magnetic column; 53. Coil. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example: Figures 1-10 As shown, the present invention provides a water purifier with leakage protection function. The water purifier includes an installation plate 1, a filter assembly 2 at the bottom of the installation plate 1, and a rear assembly 3 at the top of the installation plate 1. The filter assembly 2 is composed of a filter cartridge assembly 21, a main detection assembly 22 and a leakage prevention assembly 23. There are three filter cartridge assemblies 21, and a connecting pipe 4 is provided between the three filter cartridge assemblies 21. The main detection component 22 includes a ring block 221, a slider 222 and a force plate 223. The ring block 221 is located inside the connecting pipe 4, the slider 222 is located inside the ring block 221, one end of the slider 222 is provided with a force plate 223, a cavity 2221 is opened inside the slider 222, and a connecting block 224 is provided inside the cavity 2221.

[0028] Specifically, the water purifier is used to remove impurities from tap water, but the filtered impurities remain in the filter element. Over time, these impurities accumulate in the filter element, which can easily obstruct the normal flow rate and increase water pressure when the water inflow remains constant, potentially leading to leakage. The accumulation of impurities also affects normal water purification. The mounting plate 1 serves as the mounting base for each component. The filter component 2 consists of a filter cartridge assembly 21, a liquid delivery assembly, and a leak-proof assembly 23. There are three filter cartridge assemblies 21, forming the third purification process. The connecting pipe 4 allows liquid to flow between components. The main detection assembly 22 detects the impurity content in the filter cartridge 212 assembly. The leak-proof assembly 23 prevents leakage when excessive impurities accumulate in the filter cartridge 212 assembly, causing increased water pressure. The ring block 221 is located inside the liquid delivery assembly, and the slider 222 and the ring block 221 are on the same central axis.

[0029] like Figure 5 , Figure 6 As shown, the slider 222 has a groove 2222 on its surface, which is connected to the cavity 2221. The two ends of the connecting block 224 extend to the outside of the cavity 2221. The two ends of the connecting block 224 are fixedly connected to the ring block 221. An elastic element 225 is provided on the side of the connecting block 224 away from the force plate 223. A positioning plate 226 is provided on the inner wall of the cavity 2221. The positioning plate 226 is rotatably connected to the inner wall of the cavity 2221.

[0030] Specifically, slider 222 is connected to ring block 221 via connecting block 224. Both ends of connecting block 224 pass through groove 2222 and are connected to slider 222. Elastic element 225 is located in cavity 2221 to provide movement space, so that slider 222 is tightly attached to ring block 221 without external force. Under the influence of external force, it moves to the end away from ring block 221, but does not detach from ring block 221. Positioning plate 226 is an L-shaped plate, and there are three positioning plates 226. When liquid flows and passes through ring block 221, the liquid flow generates impact, which will generate extrusion force on force plate 223. Force plate 223 drives slider 222 to move under force, and the movement of slider 222 will affect positioning plate 226.

[0031] like Figure 9 As shown, an electrode plate 227 is provided on one side of the positioning plate 226, and a receiving plate 228 is provided on the inner wall of the cavity 2221. A sealed cover is fitted over the electrode plate 227 and the receiving plate 228.

[0032] Specifically, three positioning plates 226 are provided and arranged at equal intervals. Under normal conditions, the long side of the positioning plate 226 is in close contact with the inner wall of the cavity 2221, while the short side is upright on the inner wall of the cavity 2221. When the slider 222 moves, the connecting block 224 contacts the positioning plate 226, pushing the positioning plate 226 to rotate. Under the push of the connecting block 224, the positioning plate 226 rotates and changes position, so that one end of the short side is in close contact with the inner wall of the cavity 2221, and the long side is located on the inner wall of the cavity 2221. The electrode plate 227 is located on the outer wall of the short side of the positioning plate 226, and the receiving plate 228 is located inside the inner wall of the cavity 2221. As a result, the distance between the electrode plate 227 and the receiving plate 228 becomes shorter. The capacitance value between the connecting block 224 and the receiving plate 228 will change. When the connecting block 224 passes the positioning plate 226, the capacitance value between the corresponding electrode plate 227 and the receiving plate 228 will increase. The capacitance value before passing the positioning plate 226 is constant. Since there are three positioning plates 226 and three electrode plates 227, and the electrode plates 227 change due to the movement of the connecting block 224, and the movement of the connecting block 224 is affected by the water flow rate, the three electrode plates 227 represent three gears. The one closest to the elastic element 225 is the first gear, which means that there is water flow at the position of the slider 222, but the flow rate is relatively slow. The middle one is the second gear, which means that there is water flow at the position of the slider 222, and the flow rate is normal. The one furthest from the elastic element 225 is the third gear.

[0033] like Figure 6 , Figure 8As shown, the surface of the force plate 223 is provided with a liquid passage hole, and the side of the slider 222 close to the force plate 223 is provided with a rotating groove 2223. The rotating groove 2223 is provided with a secondary detection component 5. The secondary detection component 5 includes a rotating rod 51. The end of the rotating rod 51 away from the slider 222 is fixedly connected to the force plate 223. The rotating rod 51 is rotatably connected to the rotating groove 2223. The end of the rotating rod 51 close to the slider 222 is provided with a magnetic column 52, and a coil 53 is sleeved on the magnetic column 52.

[0034] Specifically, the force plate 223 has several liquid passage holes arranged at an angle. When the force plate 223 is pulled by water flow, some water will pass through the liquid passage holes. Due to the angled arrangement of the liquid passage holes, pressure will be generated on the liquid passage hole structure, causing the force plate 223 to rotate. The rotation of the force plate 223 will cause the magnetic column 52 to rotate. Then, since the coil 53 is sleeved on the magnetic column 52, and one end of the coil 53 is fixedly connected to the inner wall of the rotating groove 2223, the magnetic column 52 will rotate inside the coil 53. The magnetic force generated by the magnetic column 52 will cut the coil 53 and generate an induced electromotive force. The faster the water flow speed, the faster the rotation speed of the rotating rod 51 and the greater the induced electromotive force. Conversely, the slower the water flow speed, the slower the rotation speed of the rotating rod 51 and the smaller the induced electromotive force.

[0035] like Figure 4 , Figure 5 As shown, the end of the ring block 221 away from the force plate 223 is provided with a chamber 229, which is made of rubber.

[0036] Specifically, the chamber 229 has a hollow structure and is made entirely of rubber. As it is in a sealed environment, the environmental pressure continuously increases, causing the chamber 229 to contract. This internal pressure pushes the slider 222 outward. Even when the filter cartridge assembly 21 is blocked, although the liquid does not flow rapidly, the liquid density in the pipe continues to increase as liquid continues to enter from the other end, thus squeezing the chamber 229. Ultimately, this causes the connecting block 224 to pass through the three-position plate 226, indicating an abnormality in the water purifier.

[0037] like Figure 2 , Figure 7 As shown, the leak-proof component 23 includes a pressure relief pipe 231 and a valve body 232. One end of the pressure relief pipe 231 is connected to the connecting pipe 4. The valve body 232 is provided on the pressure relief pipe 231 and is electrically connected to the electrode plate 227.

[0038] Specifically, the pressure relief pipe 231 is connected to the connecting pipe 4 and the flow is controlled by the valve body 232. The valve body 232 is controlled by the electrode plate 227. When the connecting block 224 passes the three-position plate 226, the valve body 232 works, causing the liquid in the corresponding high-pressure pipe to flow out from the pressure relief pipe 231 and back to the input pipe of the first filter element 212 assembly. Afterwards, due to the decrease in liquid pressure in the pipe, the liquid leakage caused by high pressure is prevented, and the connecting block 224 moves back to the second or first position. At this time, the valve body 232 stops working.

[0039] like Figure 3 As shown, there are three filter cartridge assemblies 21. The filter cartridge assembly 21 includes an outer cylinder 211, a filter element 212 and a central tube 213. The outer cylinder 211 is located at the bottom of the mounting plate 1, the central tube 213 is located inside the outer cylinder 211, and the filter element 212 is sleeved on the central tube 213.

[0040] Specifically, the filter cartridge assembly 21 has three parts, and the filter element 212 in each filter cartridge assembly 21 is different, used to filter out different impurities. The three filter cartridge assemblies 21 are connected by a liquid delivery assembly. The filter element 212 of the first filter cartridge assembly 21 is a PP cotton core, which is used to intercept large particulate impurities and protect the subsequent precision filter element. The filter element 212 of the second filter cartridge assembly 21 is a particulate activated carbon cotton core, which is used to remove odors, residual chlorine and some organic matter in the water. The filter element 212 of the third filter cartridge assembly 21 is a compressed carbon filter element, which is used to further purify the water quality and intercept fine impurities. The external water source first passes through the first filter cartridge assembly 21, then through the second filter cartridge assembly 21, and finally through the third filter cartridge assembly 21. The liquid in the filter cartridge assembly 21 is transferred through the connecting pipe 4.

[0041] like Figure 10 As shown, the post-processor 3 includes a booster pump 31 and a reverse osmosis membrane 32. One end of the booster pump 31 is connected to the connecting pipe 4, and the other end of the booster pump 31 is connected to the reverse osmosis membrane 32. The reverse osmosis membrane 32 is connected to the composite unit 33.

[0042] Specifically, the booster pump 31 provides sufficient working pressure to the reverse osmosis membrane 32 to ensure normal reverse osmosis filtration. The reverse osmosis membrane 32 is used to remove ionic pollutants in the water and produce high-purity drinking water. The composite unit 33 integrates multi-stage filtration functions and is used to finish the water flow filtration.

[0043] Working principle: The system consists of a bottom filter assembly 2 and a top rear assembly 3, connected by a connecting pipe 4 for water flow. The filter assembly 2 contains three series-connected filter cartridges 21, each containing a PP cotton core, a granular activated carbon cotton core, and a compressed carbon filter, respectively. These sequentially intercept large particles, adsorb odors and residual chlorine, and further filter fine impurities. In the main detection assembly 22, a ring block 221 is located inside the connecting pipe 4, and a slider 222 is connected within the ring block 221 via a connecting block 224. The force plate 223, impacted by the water flow, moves the slider 222. Inside the slider 222 cavity 2221, three L-shaped positioning plates 226, corresponding to different settings, rotate with the slider 222, causing changes in the distance between the electrode plates 227 on the positioning plates 226 and the receiving plates 228 inside the cavity 2221, thus altering the capacitance value. This changes the water flow pressure and the filter cartridge's position. The degree of blockage is determined by the auxiliary detection component 5, which guides the water flow through the liquid passage of the force plate 223 to drive the rotating rod 51 to rotate. This causes the magnetic column 52 to cut the coil 53 and generate an induced electromotive force, reflecting the water flow velocity. The end of the ring block 221 away from the force plate 223 is equipped with a rubber chamber 229. When the filter cartridge is severely blocked and the pipeline pressure rises, the chamber 229 contracts and pushes the slider 222 to trigger the third position. The electrode plate 227 sends a signal to the valve body 232 of the anti-leakage component 23. The valve body 232 opens, and the pressure relief pipe 231 returns the high-pressure liquid to the input pipe of the first filter cartridge to relieve the pressure. After the pressure is restored, the valve body 232 closes to prevent high-pressure leakage from the filter cartridge component 21. The water after preliminary filtration enters the post-component 3 through the connecting pipe 4. After being pressurized by the booster pump 31, it passes through the reverse osmosis membrane 32 to intercept ionic pollutants and the composite unit 33 for final filtration, ultimately producing drinking water.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A water purifier with a water leakage protection function, the water purifier comprising a mounting plate (1), characterized in that: The mounting plate (1) has a filter assembly (2) at the bottom and a rear assembly (3) at the top. The filter assembly (2) consists of a filter cartridge assembly (21), a main detection assembly (22), and a leak-proof assembly (23). There are three filter cartridge assemblies (21), and a connecting pipe (4) is provided between the three filter cartridge assemblies (21). The main detection component (22) includes a ring block (221), a slider (222) and a force plate (223). The ring block (221) is located inside the connecting pipe (4), and the slider (222) is located inside the ring block (221). One end of the slider (222) is provided with a force plate (223). A cavity (2221) is opened inside the slider (222), and a connecting block (224) is provided inside the cavity (2221).

2. The water purifier with water leakage protection function according to claim 1, characterized in that: The slider (222) has a groove (2222) on its surface, which is connected to the cavity (2221). The two ends of the connecting block (224) extend outside the cavity (2221). The two ends of the connecting block (224) are fixedly connected to the ring block (221). An elastic element (225) is provided on the side of the connecting block (224) away from the force plate (223). A positioning plate (226) is provided on the inner wall of the cavity (2221), and the positioning plate (226) is rotatably connected to the inner wall of the cavity (2221).

3. A water purifier with leakage protection function according to claim 2, characterized in that: An electrode plate (227) is provided on one side of the positioning plate (226), and a receiving plate (228) is provided on the inner wall of the cavity (2221). Both the electrode plate (227) and the receiving plate (228) are provided with sealed covers.

4. A water purifier with leakage protection function according to claim 3, characterized in that: The surface of the force plate (223) is provided with a liquid passage hole. The slider (222) is provided with a rotating groove (2223) on the side close to the force plate (223). The rotating groove (2223) is provided with a secondary detection component (5). The secondary detection component (5) includes a rotating rod (51). The end of the rotating rod (51) away from the slider (222) is fixedly connected to the force plate (223). The rotating rod (51) is rotatably connected to the rotating groove (2223). The end of the rotating rod (51) close to the slider (222) is provided with a magnetic column (52). A coil (53) is sleeved on the magnetic column (52).

5. A water purifier with leakage protection function according to claim 4, characterized in that: The ring block (221) has a chamber (229) at one end away from the force plate (223), and the chamber (229) is made of rubber.

6. A water purifier with leakage protection function according to claim 3, characterized in that: The leak-proof component (23) includes a pressure relief pipe (231) and a valve body (232). One end of the pressure relief pipe (231) is connected to the connecting pipe (4). The pressure relief pipe (231) is provided with a valve body (232), and the valve body (232) is electrically connected to the electrode plate (227).

7. A water purifier with leakage protection function according to claim 1, characterized in that: The filter cartridge assembly (21) includes an outer cylinder (211), a filter element (212) and a central tube (213). The outer cylinder (211) is located at the bottom of the mounting plate (1), the central tube (213) is located inside the outer cylinder (211), and the filter element (212) is sleeved on the central tube (213).

8. A water purifier with leakage protection function according to claim 1, characterized in that: The post-assembly (3) includes a booster pump (31), a reverse osmosis membrane (32) and a composite unit (33). One end of the booster pump (31) is connected to the connecting pipe (4), and the other end of the booster pump (31) is connected to the reverse osmosis membrane (32). The reverse osmosis membrane (32) is connected to the composite unit (33).

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