Drinking water filtering device

Abstract

The invention relates to the technical field of drinking water filtering, and discloses a drinking water filtering device which comprises a first filter cartridge and a second filter cartridge, the first filter cartridge and the second filter cartridge are connected through a water guide pipe, and drinking water is primarily filtered through the first filter cartridge and then guided into the second filter cartridge to be secondarily filtered. By arranging the first filter cylinder and the second filter cylinder, the first filter mechanism and the second filter mechanism are arranged respectively, double filtration of drinking water is achieved, the first filter cylinder and the second filter cylinder remove large impurities and particles and fine impurities and harmful substances respectively, it is ensured that the filtered drinking water reaches the higher quality standard, and the drinking water quality is improved. A filter element I in the filter mechanism I rotates under the driving of a motor to generate centrifugal force, impurities in drinking water are separated and blocked in the filter element, and meanwhile, under the action of a guide plate and a driving lever, the drinking water generates bubbles, promotes an oxidation-reduction reaction and removes reducing substances such as ferrous ions, manganese ions and the like, so that the filtering effect is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of drinking water filtration technology, specifically to a drinking water filtration device. Background Technology

[0002] In modern life, the safety and hygiene of drinking water are crucial for safeguarding public health. With increasing environmental pollution and rising demands for quality of life, traditional drinking water filtration methods are no longer sufficient to meet the demand for high-quality drinking water. While a wide variety of drinking water filtration devices are available on the market, several problems still need to be addressed.

[0003] For example, application number 202411377702.1 discloses a reverse osmosis device with anti-clogging function. It guides water flow to the turbine blades through a hemispherical block, which in turn impacts the turbine blades and drives the turbine to rotate. This changes the water flow impacting the filter plate into a spiral rotation, and after contacting the filter plate surface, it produces a spiral scouring effect, thereby cleaning the suspended particles, silt, and microorganisms attached to the filter plate surface, preventing them from adhering to the filter plate surface and clogging the filter plate, thus affecting its permeation effect.

[0004] However, most existing filtration devices use only a single filter element, which cannot effectively remove various impurities and harmful substances from the water, resulting in unsatisfactory filtration effects. For some difficult-to-remove reducing substances (such as ferrous ions and manganese ions) and organic matter, existing filtration devices often lack effective treatment methods, leading to potential safety hazards in the filtered water. Therefore, a drinking water filtration device is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a drinking water filtration device to address the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a drinking water filtration device, comprising a first filter cartridge and a second filter cartridge, wherein the first filter cartridge and the second filter cartridge are connected by a water guide pipe, for introducing drinking water into the second filter cartridge for secondary filtration after primary filtration through the first filter cartridge; further comprising:

[0007] The inlet pipe is connected to the left side of the first filter cartridge and is used to introduce unfiltered drinking water into the first filter cartridge.

[0008] The outlet pipe is connected to the top of the second filter cartridge and is used to discharge the filtered drinking water.

[0009] Filter mechanism one is located inside the first filter cartridge and is used for preliminary filtration of drinking water;

[0010] The second filter mechanism is located inside the second filter cartridge and is used for secondary filtration of drinking water.

[0011] The first filtering mechanism includes:

[0012] Filter element one: The inner wall of the first filter cartridge has annular protrusions on both sides, and the filter element one rotates on the inner wall of the annular protrusions to generate centrifugation and separate drinking water from the filter element one.

[0013] A fixed sleeve is provided at the axis of the first filter cartridge, and a plurality of guide plates are fixedly connected to the outer wall of the fixed sleeve. The outer wall of the guide plate is connected to the inner wall of the water inlet pipe for guiding the water to flow out in a spiral.

[0014] A rotating assembly is located inside the first filter cartridge and is used to drive the filter element to rotate.

[0015] Preferably, the rotating assembly includes:

[0016] A rotating rod is rotatably connected to the right side of the inner wall of the first filter cylinder, and one end of the rotating rod moves through the first filter cylinder and extends outward, and a sealing ring is provided at the connection between the rotating rod and the first filter cylinder;

[0017] A bracket is fixedly sleeved on the outer wall of the rotating rod, and the bracket is connected to the inner wall of the filter element.

[0018] A motor is connected to the right side of the outer wall of the first filter cartridge, and the output end of the motor is connected to the extension end of the rotating rod to drive the rotating rod to rotate.

[0019] Preferably, the fixing sleeve is fitted onto the outer wall of the rotating rod;

[0020] The outer wall of the fixed sleeve is connected to multiple elastic telescopic rods, and the top of the elastic telescopic rods is connected to a scraper and pushes the scraper to fit against the inner wall of the filter element one for cleaning the filter element one.

[0021] The fixing sleeve is provided with multiple sections and is sleeved on the outer wall of the rotating rod;

[0022] An annular groove is provided between every two adjacent fixed sleeves, and a rotating ring is rotatably connected in the annular groove. Each elastic telescopic rod is connected to the corresponding fixed sleeve.

[0023] The outer wall of the rotating ring is fixedly fitted with a circular ring, and the rotating ring is fixedly fitted on the outer wall of the rotating rod and rotates with the rotating rod;

[0024] Multiple levers are fixedly connected to the outer wall of the ring and are used to agitate the drinking water to generate bubbles when rotated.

[0025] Preferably, the second filtering mechanism includes:

[0026] Two limiting brackets are fixedly connected to the inner wall of the second filter cartridge;

[0027] The second filter element is located between the two limiting frames and is used for secondary filtration of drinking water.

[0028] Preferably, the second filter cartridge is provided with a buffer mechanism to buffer the direct impact of the pre-filtered drinking water on the second filter cartridge;

[0029] The buffer mechanism includes:

[0030] A reciprocating lead screw is fixedly connected to the bottom of the limiting frame described below;

[0031] A support frame is connected to the bottom opening of the second filter cartridge, and the outer wall of the reciprocating screw is connected to the support frame;

[0032] The turbine is connected to the outer wall of the reciprocating lead screw. When drinking water enters the second filter cartridge from the water guide pipe, it drives the turbine to rotate, thus buffering the impact of the drinking water on the second filter cartridge.

[0033] Preferably, when the turbine rotates on the outer wall of the reciprocating screw, it moves up and down along the reciprocating screw;

[0034] The top of the turbine is equipped with bristles, which rotate and brush the filter element as the turbine moves upward.

[0035] Preferably, the first filter cartridge and the second filter cartridge are provided in two sections, and the two sections of the first filter cartridge and the second filter cartridge are connected by bolts, which facilitates the replacement of filter element one and filter element two.

[0036] Preferably, a drain pipe is installed on the right side of the first filter cartridge to discharge sewage and impurities from the first filter cartridge;

[0037] The bottom of the second filter cartridge is equipped with a drain pipe 2, which is used to discharge the sewage and impurities inside the second filter cartridge;

[0038] Solenoid valve 1, solenoid valve 2, solenoid valve 3, and solenoid valve 4 are respectively installed on the sewage pipe 1, sewage pipe 2, water outlet pipe, and water guide pipe to control the flow direction of drinking water.

[0039] The present invention, by adopting the above technical solution, can bring the following beneficial effects:

[0040] 1. This drinking water filtration device, by setting up a first filter cartridge and a second filter cartridge, respectively equipped with filtration mechanism one and filtration mechanism two, achieves dual filtration of drinking water. The first filter cartridge performs preliminary filtration, removing larger impurities and particles; the second filter cartridge performs secondary filtration, further removing fine impurities and harmful substances, ensuring that the filtered drinking water meets higher quality standards. The filter element one in filtration mechanism one rotates under the drive of a motor, generating centrifugal force, separating and blocking impurities in the drinking water within the filter element. At the same time, through the action of the guide plate and lever, bubbles are generated in the drinking water, promoting oxidation-reduction reactions and removing reducing substances such as ferrous ions and manganese ions, effectively improving the filtration effect.

[0041] 2. In this drinking water filtration device, the elastic telescopic rod pushes the scraper to fit against the inner wall of filter element one. When filter element one rotates, the scraper can automatically clean the impurities attached to the inner wall of filter element one, avoiding the accumulation of impurities that affect the filtration effect, reducing the frequency and workload of manual cleaning, and improving the maintenance efficiency of the equipment. The turbine in the buffer mechanism rotates under the impact of water flow and moves up and down along the reciprocating screw. The bristles on its top can brush and clean filter element two. This self-cleaning mechanism can not only effectively remove impurities from the surface of filter element two, but also change the height of the spiral column of water flow through the rotation and movement of the turbine, further improving the cleaning effect and extending the service life of the filter element.

[0042] 3. The buffer mechanism of this drinking water filtration device can effectively buffer the direct impact of the pre-filtered drinking water on the second filter element, reduce the impact force of the water flow on the second filter element, and prevent the second filter element from being damaged by strong impact for a long time, thereby extending the service life of the second filter element and reducing the replacement cost of the equipment. The self-cleaning function cleans the impurities on the filter element in time, reduces the accumulation of impurities on the filter element, maintains the permeability of the filter element, further extends the service life of the filter element, and improves the stability and reliability of the filtration device. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of the present invention;

[0044] Figure 2 This is a schematic diagram of the internal structure of the first and second filter cartridges of the present invention;

[0045] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention;

[0046] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0047] Figure 5 This is a schematic diagram of the internal structure of the fixing sleeve of the present invention;

[0048] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B;

[0049] Figure 7 This is a schematic cross-sectional view of the second filter cartridge of the present invention.

[0050] In the diagram: 1. First filter cartridge; 2. Inlet pipe; 3. Guide pipe; 4. Second filter cartridge; 5. Filtration mechanism one; 51. Filter element one; 52. Fixing sleeve; 521. Rotating ring; 522. Circular ring; 523. Toggle lever; 53. Guide plate; 54. Support; 55. Rotating rod; 56. Motor; 57. Elastic telescopic rod; 58. Scraper; 6. Filtration mechanism two; 61. Filter element two; 62. Limiting frame; 7. Buffer mechanism; 71. Reciprocating screw; 72. Turbine; 73. Support frame; 74. Brush bristles; 8. Drainage pipe one; 9. Drainage pipe two; 10. Outlet pipe; 11. Solenoid valve one; 12. Solenoid valve two; 13. Solenoid valve three; 14. Solenoid valve four. Detailed Implementation

[0051] 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.

[0052] Please see Figure 1-7 One embodiment of the present invention is: a drinking water filtration device, comprising a first filter cartridge 1 and a second filter cartridge 4, the first filter cartridge 1 and the second filter cartridge 4 being connected by a water guide pipe 3, for introducing drinking water into the second filter cartridge 4 for secondary filtration after primary filtration through the first filter cartridge 1; further comprising:

[0053] Water inlet pipe 2 is connected to the left side of the first filter cartridge 1 and is used to introduce unfiltered drinking water into the first filter cartridge 1;

[0054] The outlet pipe 10 is connected to the top of the second filter cartridge 4 and is used to discharge filtered drinking water.

[0055] Filtration mechanism 5 is located inside the first filter cartridge 1 and is used for preliminary filtration of drinking water;

[0056] Filter mechanism 26 is located inside the second filter cartridge 4 and is used for secondary filtration of drinking water;

[0057] The filter mechanism 5 includes:

[0058] Filter element 51: The inner wall of the first filter cartridge 1 has annular protrusions on both sides, and the filter element 51 rotates on the inner wall of the annular protrusions to generate centrifugation and separate drinking water from the filter element 51.

[0059] A fixed sleeve 52 is set at the axis of the first filter cartridge 1, and a plurality of guide plates 53 are fixedly connected to the outer wall of the fixed sleeve 52. The outer wall of the guide plate 53 is connected to the inner wall of the water inlet pipe 2 for guiding the water to flow out in a spiral.

[0060] A rotating assembly is located inside the first filter cartridge 1 and is used to drive the filter element 51 to rotate.

[0061] The rotating assembly includes:

[0062] Rotating rod 55 is rotatably connected to the right side of the inner wall of the first filter cylinder 1, and one end of rotating rod 55 moves through the first filter cylinder 1 and extends outward, and a sealing ring is provided at the connection between rotating rod 55 and the first filter cylinder 1;

[0063] The bracket 54 is fixedly sleeved on the outer wall of the rotating rod 55, and the bracket 54 is connected to the inner wall of the filter element 51.

[0064] Motor 56 is connected to the right side of the outer wall of the first filter cartridge 1, and the output end of motor 56 is connected to the extension end of rotating rod 55 for driving rotating rod 55 to rotate.

[0065] The fixing sleeve 52 is fitted onto the outer wall of the rotating rod 55;

[0066] The outer wall of the fixed sleeve 52 is connected to multiple elastic telescopic rods 57, and the top of the elastic telescopic rods 57 is connected to a scraper 58, which pushes the scraper 58 to fit against the inner wall of the filter element 51 for cleaning the filter element 51.

[0067] The fixing sleeve 52 is provided with multiple segments and is sleeved on the outer wall of the rotating rod 55;

[0068] An annular groove is provided between every two adjacent fixed sleeves 52, and a rotating ring 521 is rotatably connected in the annular groove. Each elastic telescopic rod 57 is connected to the corresponding fixed sleeve 52.

[0069] A ring 522 is fixedly sleeved on the outer wall of the rotating ring 521, and the rotating ring 521 is fixedly sleeved on the outer wall of the rotating rod 55 and rotates with the rotating rod 55;

[0070] Multiple levers 523 are fixedly connected to the outer wall of the ring 522 and are used to agitate drinking water to generate bubbles when rotated.

[0071] Filter mechanism 26 includes:

[0072] Two limiting brackets 62 are fixedly connected to the inner wall of the second filter cartridge 4 respectively;

[0073] Filter element 2 61 is located between two limiting frames 62 and is used for secondary filtration of drinking water.

[0074] The second filter cartridge 4 is equipped with a buffer mechanism 7, which is used to buffer the direct impact of the pre-filtered drinking water on the second filter cartridge 61.

[0075] Buffer mechanism 7 includes:

[0076] The reciprocating lead screw 71 is fixedly connected to the bottom of the lower limit bracket 62;

[0077] The support frame 73 is connected to the bottom opening of the second filter cartridge 4, and the outer wall of the reciprocating screw 71 is connected to the support frame 73;

[0078] The turbine 72 is connected to the outer wall of the reciprocating screw 71. When drinking water enters the second filter cartridge 4 from the water guide pipe 3, it drives the turbine 72 to rotate, thus buffering the impact of drinking water on the second filter cartridge 61.

[0079] When the turbine 72 rotates on the outer wall of the reciprocating screw 71, it will move up and down along the reciprocating screw 71.

[0080] The top of the turbine 72 is provided with bristles 74, which rotate and brush the filter element 61 as the turbine 72 moves upward.

[0081] The first filter cartridge 1 and the second filter cartridge 4 are provided in two sections, and the two sections of the first filter cartridge 1 and the second filter cartridge 4 are connected by bolts, which facilitates the replacement of filter element 1 51 and filter element 2 61.

[0082] A drain pipe 8 is installed on the right side of the first filter cartridge 1 to discharge sewage and impurities from the first filter cartridge 1.

[0083] The bottom of the second filter cartridge 4 is equipped with a drain pipe 2 9, which is used to discharge the sewage and impurities inside the second filter cartridge 4;

[0084] Solenoid valves 11, 12, 13, and 14 are respectively installed on sewage pipe 1, sewage pipe 2, water outlet pipe 10, and water guide pipe 3 to control the flow direction of drinking water.

[0085] Working principle: Before drinking water is consumed, it needs to be filtered and separated. Water is introduced into the first filter cartridge 1 through the inlet pipe 2. At this time, the drinking water will first come into contact with multiple guide plates 53. Due to the spiral shape of the guide plates 53, the drinking water will be rotated and guided into the first filter cartridge 1. At this time, under the action of water pressure, the water will pass through the filter element and enter the second filter cartridge 4 through the water guide pipe 3 for secondary filtration.

[0086] Furthermore, during filtration, by starting the motor 56, the motor 56 drives the rotating rod 55 to rotate, and simultaneously drives the bracket 54 to rotate, and simultaneously drives the filter element 51 to rotate. When the filter element 51 rotates, the drinking water that has passed through the first filter element 1 flows out, and drives the drinking water to rotate, thereby generating centrifugal ejection, thus separating the drinking water and blocking impurities inside the filter element 51, thereby achieving preliminary filtration. When the filter element 51 rotates, it is pushed by the elastic telescopic rod 57 and pushes the scraper 58 to contact the inner wall of the filter element 51. At this time, due to the contact between the filter element 51 and the scraper 58, the impurities attached to the inside of the filter element 51 are scraped off, thereby achieving self-cleaning and avoiding affecting the filtration effect of drinking water.

[0087] Furthermore, when the rotating rod 55 rotates, it also drives the rotating ring 521 connected to its outer wall to rotate, which in turn drives the ring 522 and the lever 523 to rotate. This agitates the drinking water, causing it to generate bubbles, thereby enhancing the oxidation-reduction reaction and removing reducing substances, such as ferrous ions (Fe2+) in the water. 2+ ), manganese ions (Mn) 2+ Reducing impurities such as iron(OH)3 and manganese(MnO2) react with oxygen under aeration conditions to form insoluble precipitates such as iron(OH)3 and manganese(MnO2), which are easy to remove by subsequent filtration. At the same time, it can also decompose organic matter: some organic matter (such as sulfides and phenols) can be decomposed by microorganisms or oxidants when dissolved oxygen is sufficient.

[0088] When the water, after initial filtration, is introduced into the second filter cartridge 4 through the water guide pipe 3, it first enters the second filter cartridge 4 and impacts the turbine 72, causing the turbine 72 to rotate. As the turbine 72 rotates, it rotates on the outer wall of the reciprocating screw 71, causing the turbine 72 to move up and down on the outer wall of the reciprocating screw 71. When the turbine 72 moves to the top, it sweeps and cleans the filter element 61, thus achieving a self-cleaning effect. When the turbine 72 moves up and down and rotates, it can disperse the impact force of the water flow, preventing drinking water from directly impacting the filter element 61. On the other hand, the water flow driven by the turbine 72's spiral can also produce a spiral rotation effect, thus enabling the filter element 61 to self-clean and improving the cleaning effect. At the same time, when the turbine 72 moves up and down, it also causes the height of the spiral column of the water flow to change, thereby changing the self-cleaning force of the filter element 61 and further improving the cleaning effect.

[0089] When it is necessary to clean the sewage and impurities in the first filter cartridge 1 and the second filter cartridge 4, first open the solenoid valve 11 and close the solenoid valve 13. At this time, the water entering through the inlet pipe 2 will directly pass through the first filter cartridge 1, so that the sewage and impurities in the filter element 51 can be discharged through the drain pipe 8. At the same time, when the filter element 51 rotates, it will rotate relative to the scraper 58, and can also scrape off the sewage and impurities in the filter element 51 during the sewage discharge, which can further improve the cleaning effect.

[0090] Then, solenoid valve 11 and solenoid valve 212 are closed, and solenoid valve 313 and solenoid valve 414 are opened. At this time, drinking water will pass through filter element 151 and enter the water guide pipe 3 into the second filter cartridge 4. The drinking water will flush the sewage and impurities below filter element 261 and flow out through drain pipe 29, thereby achieving a cleaning effect. When turbine 72 rotates, it contacts the bottom of filter element 261, thereby cleaning the bottom of filter element 261, thus achieving rapid cleaning and discharge.

[0091] This invention provides a drinking water filtration device. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A drinking water filtration device, comprising a first filter cartridge (1) and a second filter cartridge (4), wherein the first filter cartridge (1) and the second filter cartridge (4) are connected by a water guide pipe (3) for introducing drinking water, after primary filtration through the first filter cartridge (1), into the second filter cartridge (4) for secondary filtration; characterized in that, Also includes: The inlet pipe (2) is connected to the left side of the first filter cartridge (1) and is used to introduce unfiltered drinking water into the first filter cartridge (1); The outlet pipe (10) is connected to the top of the second filter cartridge (4) and is used to discharge the filtered drinking water. Filter mechanism 1 (5) is located inside the first filter cartridge (1) and is used for preliminary filtration of drinking water; The second filter mechanism (6) is located inside the second filter cartridge (4) and is used for secondary filtration of drinking water; The filter mechanism (5) includes: Filter element one (51), the inner wall of the first filter cartridge (1) is provided with annular protrusions on both sides, and the filter element one (51) rotates on the inner wall of the annular protrusions to generate centrifugation and separate drinking water from the filter element one (51). A fixed sleeve (52) is set at the axis of the first filter cartridge (1), and a plurality of guide plates (53) are fixedly connected to the outer wall of the fixed sleeve (52), and the outer wall of the guide plate (53) is connected to the inner wall of the water inlet pipe (2) for guiding the water to flow out in a spiral. A rotating assembly is disposed inside the first filter cartridge (1) and is used to drive the filter element (51) to rotate.

2. The drinking water filtration device according to claim 1, characterized in that: The rotating assembly includes: A rotating rod (55) is rotatably connected to the right side of the inner wall of the first filter cylinder (1), and one end of the rotating rod (55) moves through the first filter cylinder (1) and extends outward, and a sealing ring is provided at the connection between the rotating rod (55) and the first filter cylinder (1); A bracket (54) is fixedly sleeved on the outer wall of the rotating rod (55), and the bracket (54) is connected to the inner wall of the filter element (51); A motor (56) is connected to the right side of the outer wall of the first filter cartridge (1), and the output end of the motor (56) is connected to the extension end of the rotating rod (55) to drive the rotating rod (55) to rotate.

3. A drinking water filtration device according to claim 2, characterized in that: The fixing sleeve (52) is fitted onto the outer wall of the rotating rod (55); The outer wall of the fixed sleeve (52) is connected to multiple elastic telescopic rods (57), and the top of the elastic telescopic rods (57) is connected to a scraper (58) and pushes the scraper (58) to fit against the inner wall of the filter element (51) for cleaning the filter element (51). The fixing sleeve (52) is provided with multiple sections and is sleeved on the outer wall of the rotating rod (55); An annular groove is provided between every two adjacent fixed sleeves (52), and a rotating ring (521) is rotatably connected in the annular groove. Each elastic telescopic rod (57) is connected to the corresponding fixed sleeve (52). The outer wall of the rotating ring (521) is fixedly fitted with a circular ring (522), and the rotating ring (521) is fixedly fitted on the outer wall of the rotating rod (55) and rotates with the rotating rod (55); Multiple levers (523) are fixedly connected to the outer wall of the ring (522) for rotating to agitate drinking water to generate bubbles.

4. A drinking water filtration device according to claim 3, characterized in that: The second filtration mechanism (6) includes: Two limiting brackets (62) are respectively fixedly connected to the inner wall of the second filter cartridge (4); Filter cartridge 2 (61) is located between two limiting frames (62) and is used for secondary filtration of drinking water.

5. A drinking water filtration device according to claim 4, characterized in that: The second filter cartridge (4) is provided with a buffer mechanism (7) to buffer the direct impact of the pre-filtered drinking water on the second filter cartridge (61); The buffer mechanism (7) includes: A reciprocating lead screw (71) is fixedly connected to the bottom of the lower limiting frame (62); A support frame (73) is connected to the bottom opening of the second filter cartridge (4), and the outer wall of the reciprocating screw (71) is connected to the support frame (73); The turbine (72) is connected to the outer wall of the reciprocating screw (71). When drinking water enters the second filter cartridge (4) from the water guide pipe (3), the turbine (72) is driven to rotate, which buffers the impact of drinking water on the second filter cartridge (61).

6. A drinking water filtration device according to claim 5, characterized in that: When the turbine (72) rotates on the outer wall of the reciprocating screw (71), it will move up and down along the reciprocating screw (71); The top of the turbine (72) is provided with bristles (74), which rotate to brush the filter element (61) as the turbine (72) moves upward.

7. A drinking water filtration device according to claim 6, characterized in that: The first filter cartridge (1) and the second filter cartridge (4) are provided in two sections, and the two sections of the first filter cartridge (1) and the second filter cartridge (4) are connected by bolts, which facilitates the replacement of filter element one (51) and filter element two (61).

8. A drinking water filtration device according to claim 7, characterized in that: A drain pipe (8) is installed on the right side of the first filter cartridge (1) for discharging sewage and impurities from the first filter cartridge (1); The bottom of the second filter cartridge (4) is equipped with a second drain pipe (9) for discharging sewage and impurities from the second filter cartridge (4); Solenoid valves 1 (11), 2 (12), 3 (13), and 4 (14) are respectively installed on the sewage pipe 1 (8), sewage pipe 2 (9), water outlet pipe (10), and water guide pipe (3) to control the flow direction of drinking water.

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