CN215559623U

CN215559623U - Multi-stage filtration water purification system and water purifier

Info

Publication number: CN215559623U
Application number: CN202122075569.2U
Authority: CN
Inventors: 宋洪忱; 郭绵城; 邱恒凤
Original assignee: Fujian Jiahe Environmental Technology Co ltd
Current assignee: Fujian Jiahe Environmental Technology Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-01-18
Anticipated expiration: 2031-08-31

Abstract

A multi-stage filtration water purification system and a water purifier relate to the technical field of water treatment equipment and comprise a first water purification tank, a water inlet pipe, a second water purification tank, a third water purification tank, a water outlet pipe and a valve, wherein the first water purification tank is provided with the water inlet pipe and the second water purification tank, the second water purification tank is provided with the third water purification tank, the third water purification tank is provided with the water outlet pipe, and the water outlet pipe is provided with the valve; the utility model has strong practicability and very convenient use, can filter and purify tap water, meets the daily use requirements of people, improves the water outlet speed and saves the water taking time.

Description

Multi-stage filtration water purification system and water purifier

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of water treatment equipment, in particular to a multi-stage filtration water purification system and a water purifier.

[ background of the utility model ]

It is known that, during running water, important materials can not be replaced in daily life of people, running water in China is purified and disinfected water which is produced by tap water treatment plants in various places and meets the corresponding standards and is used for people to live and produce, but due to water source pollution, poor quality of a water pipe network and the like, the running water used in daily life of people cannot meet the standard of direct drinking, the water flow is small under the general condition of a water purifier installed at home by a household, the water outlet speed is slow, and water needs to be stored for a long time during use, so that the use experience is influenced.

[ Utility model ] content

In order to overcome the defects in the background art, the utility model discloses a multi-stage filtration water purification system and a water purifier.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

the utility model provides a multi-stage filtration water purification system and water purifier, includes first water purification case, inlet tube, second water purification case, third water purification case, outlet pipe and valve, is equipped with inlet tube and second water purification case on the first water purification case, is equipped with the third water purification case on the second water purification case, is equipped with the outlet pipe on the third water purification case, is equipped with the valve on the outlet pipe.

First clean water tank, second clean water tank and third clean water tank top-down evenly set up, and the top of first clean water tank is equipped with the inlet tube, and third clean water tank below is equipped with the outlet pipe.

First water purification case is by first connecting pipe, upper plate, filter screen, first water ring sum first downcomer, and first connecting pipe is hollow cylinder type structure, and the top of first connecting pipe is equipped with the upper plate, and the lower part face of upper plate is connected with the upper portion face of first connecting pipe, is equipped with the inlet tube on the upper plate, and the inlet tube passes the upper plate, and the lower extreme of first connecting pipe inner wall is equipped with the internal thread, is equipped with filter screen and first water ring in the first connecting pipe, is equipped with first downcomer on the first water ring that gathers.

The filter screen sets up in the inlet tube below, and the edge of filter screen is connected with the inner wall of first connecting pipe, and filter screen and upper plate parallel arrangement, the below of filter screen are equipped with first water ring of gathering, and first water ring of gathering is hollow round platform type structure, and the side of first water ring of gathering is connected with the inner wall of first connecting pipe, and bottom surface diameter is less than the bottom surface diameter under the first water ring of gathering, is equipped with first downcomer on the inner wall of first water ring, and the side of first downcomer upper end is connected with the inner wall of first water ring of gathering.

The second water purification case is by the second connecting pipe, the connecting plate, the closing plate, ultraviolet lamp, the second condensate ring, second downcomer and motor constitute, the second connecting pipe is hollow cylinder type structure, the side of second connecting pipe upper end is equipped with the external screw thread, the external screw thread of second connecting pipe and the internal thread interconnect of first connecting pipe, the lower extreme of second connecting pipe inner wall is equipped with the internal thread, be equipped with the connecting plate in the second connecting pipe, closing plate and second condensate ring, be equipped with ultraviolet lamp on the connecting plate, be equipped with second downcomer and motor on the second condensate ring, be equipped with drive gear on the motor.

The connecting plate is of a cylindrical structure, the connecting plate is arranged in parallel with the upper plate, the side face of the connecting plate is connected with the inner wall of the second connecting pipe, a connecting hole is formed in the connecting plate and is arranged right below the first sewer pipe, ultraviolet lamps are uniformly distributed on the lower face of the connecting plate, and a sealing plate is arranged below the connecting plate.

The closing plate is with connecting plate parallel arrangement, the closing plate is made by stereoplasm transparent material, the closing plate is cylinder type structure, the side of closing plate is connected with the inner wall of second connecting pipe, be equipped with the connecting hole on the closing plate, the connecting hole setting of closing plate is under the connecting hole of connecting plate, establish by second condensate ring below the closing plate, second condensate ring is hollow circular truncated cone type structure, the side of second condensate ring is connected with the inner wall of second connecting pipe, bottom surface diameter is less than the bottom surface diameter under the second condensate ring, be equipped with the second downcomer on the inner wall of second condensate ring, the side of second downcomer upper end is connected with the inner wall of second condensate ring, the lower bottom surface of second condensate ring is equipped with the motor, be equipped with drive gear on the drive shaft of motor.

The third water purification case is by the third connecting pipe, the hypoplastron, a separation plate, the third ring of catchmenting, solid fixed ring, a bearing, the rotating gear, the stack shell, the apron, bottom plate and reverse osmosis membrane constitute, be equipped with the hypoplastron on the third connecting pipe, a separation plate, the third ring of catchmenting and solid fixed ring, gu be equipped with the bearing on the fixed ring, be equipped with the rotating gear on the bearing, the apron, bottom plate and reverse osmosis membrane, the third connecting pipe is hollow cylinder type structure, the upper end of third connecting pipe side is equipped with the external screw thread, the external screw thread of third connecting pipe and the internal thread interconnect of second connecting pipe, the below of third connecting pipe is equipped with the hypoplastron, the upper portion face of hypoplastron is connected with the lower bottom surface of third connecting pipe, be equipped with the outlet pipe on the hypoplastron, the hypoplastron is passed to the upper end of outlet pipe, the lower extreme of outlet pipe is equipped with the valve.

The baffle is of a cylindrical structure, the side face of the baffle is connected with the inner wall of the third connecting pipe, a connecting hole is formed in the baffle, the connecting hole of the baffle is formed under the second sewer pipe, a through hole is formed beside the connecting hole of the baffle, a driving shaft of the motor penetrates through the through hole, a fixing ring is arranged below the baffle and is of a circular ring type structure, the side face of the fixing ring is connected with the inner wall of the third connecting pipe, the fixing ring is arranged in parallel with the baffle, a bearing is arranged on the inner wall of the fixing ring, the side face of the bearing is connected with the inner wall of the fixing ring, a barrel body is arranged in the bearing, a third water ring is arranged below the fixing ring and is of a hollow circular truncated cone type structure, the side face of the third water ring is connected with the inner wall of the third connecting pipe, the diameter of the lower bottom face of the third water ring is smaller than that of the upper bottom face, and the inner wall of the upper end of the third water ring is connected with the side face of the water outlet pipe.

The barrel is hollow cylinder type structure, the cover has rotating gear on the barrel, rotating gear's inner wall is connected with the side of barrel, rotating gear sets up between baffle and solid fixed ring, rotating gear's the teeth of a cogwheel and drive gear's teeth of a cogwheel intermeshing, the top of barrel is equipped with the apron, the apron is cylinder type structure, the lower bottom surface of apron is connected with the last bottom surface of barrel, be equipped with the connecting hole on the apron, the apron connecting hole sets up under the baffle connecting hole, the below of barrel is equipped with the bottom plate, the bottom plate is cylinder type structure, the last bottom surface of bottom plate is connected with the lower bottom surface of barrel, the side evenly distributed of barrel has the infiltration hole, the infiltration hole sets up in the bearing below, be equipped with reverse osmosis membrane in the barrel, reverse osmosis membrane pastes on the inner wall of barrel.

The utility model relates to a multi-stage filtration water purification system and a water purifier, which comprise a first water purification tank, a water inlet pipe, a second water purification tank, a third water purification tank, a water outlet pipe and a valve, wherein the water inlet pipe and the second water purification tank are arranged on the first water purification tank; the utility model has strong practicability and very convenient use, can filter and purify tap water, meets the daily use requirements of people, improves the water outlet speed and saves the water taking time.

[ description of the drawings ]

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a sectional view of a first fresh water tank of the present invention;

FIG. 3 is a sectional view of a second fresh water tank of the present invention;

FIG. 4 is a sectional view of a third fresh water tank of the present invention;

in the figure: 1. a first purified water tank; 2. a second purified water tank; 3. a third purified water tank; 4. a water inlet pipe; 5. a water outlet pipe; 6. a valve; 7. a first connecting pipe; 8. an upper plate; 9. filtering with a screen; 10. a first water-collecting ring; 11. a first downcomer pipe; 12. a second connecting pipe; 13. a connecting plate; 14. a sealing plate; 15. an ultraviolet lamp; 16. connecting holes; 17. a second water ring; 18. a second downcomer; 19. a motor; 20. a drive gear; 21. a third connecting pipe; 22. a lower plate; 23. a partition plate; 24. perforating; 25. a third water ring; 26. a fixing ring; 27. a bearing; 28. a rotating gear; 29. a barrel body; 30. a cover plate; 31. a base plate; 32. a water seepage hole; 33. a reverse osmosis membrane.

[ detailed description ] embodiments

The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.

Combine 1 ~ 4 a multi-stage filtration water purification system and water purifier of attached drawing, including first water purification case 1, inlet tube 4, second water purification case 2, third water purification case 3, outlet pipe 5 and valve 6, be equipped with inlet tube 4 and second water purification case 2 on the first water purification case 1, be equipped with third water purification case 3 on the second water purification case 2, be equipped with outlet pipe 5 on the third water purification case 3, be equipped with valve 6 on the outlet pipe 5.

First water purification case 1, second

water purification case

2 and 3 top-down evenly set up of third water purification case, and the top of first water purification case 1 is equipped with

inlet tube

4, and 3 below of third water purification case are equipped with outlet pipe 5.

First water purification case 1 is by first connecting pipe 7, upper plate 8, filter screen 9, first water ring 10 and first downcomer 11, first connecting pipe 7 is hollow cylinder type structure, the top of first connecting pipe 7 is equipped with upper plate 8, the lower part face of upper plate 8 is connected with the upper portion face of first connecting pipe 7, be equipped with inlet tube 4 on the upper plate 8, inlet tube 4 passes upper plate 8, the lower extreme of 7 inner walls of first connecting pipe is equipped with the internal thread, be equipped with filter screen 9 and first water ring 10 in the first connecting pipe 7, be equipped with first downcomer 11 on first water ring 10.

The utility model discloses a water purifier, including inlet tube 4, filter screen 9, first connecting pipe 7, filter screen 9 and upper plate 8 parallel arrangement, filter screen 9's below is equipped with first water ring 10, first water ring 10 is hollow round platform type structure, the side of first water ring 10 is connected with the inner wall of first connecting pipe 7, bottom surface diameter is less than the bottom surface diameter under the first water ring 10, be equipped with first downcomer 11 on the inner wall of first water ring 10, the side of first downcomer 11 upper end is connected with the inner wall of first water ring 10.

The second water purification tank 2 is by second connecting pipe 12, connecting plate 13, closing plate 14, ultraviolet lamp 15, second condensate ring 17, second downcomer 18 and motor 19 constitute, second connecting pipe 12 is hollow cylinder type structure, the side of second connecting pipe 12 upper end is equipped with the external screw thread, the external screw thread of second connecting pipe 12 and the internal thread interconnect of first connecting pipe 7, the lower extreme of second connecting pipe 12 inner wall is equipped with the internal thread, be equipped with connecting plate 13 in the second connecting pipe 12, closing plate 14 and second condensate ring 17, be equipped with ultraviolet lamp 15 on the connecting plate 13, be equipped with second downcomer 18 and motor 19 on the second condensate ring 17, be equipped with drive gear 20 on the motor 19.

The connecting plate 13 is of a cylindrical structure, the connecting plate 13 is arranged in parallel with the upper plate 8, the side face of the connecting plate 13 is connected with the inner wall of the second connecting pipe 12, a connecting hole 16 is formed in the connecting plate 13, the connecting hole 16 is arranged right below the first downcomer 11, ultraviolet lamps 15 are uniformly distributed on the lower face of the connecting plate 13, and a sealing plate 14 is arranged below the connecting plate 13.

The sealing plate 14 is arranged in parallel with the connecting plate 13, the sealing plate 14 is made of a hard transparent material, the sealing plate 14 is of a cylindrical structure, the side face of the sealing plate 14 is connected with the inner wall of the second connecting pipe 12, a connecting hole 16 is formed in the sealing plate 14, the connecting hole 16 of the sealing plate 14 is arranged under the connecting hole 16 of the connecting plate 13, a second water collecting ring 17 is arranged under the sealing plate 14, the second water collecting ring 17 is of a hollow circular truncated cone structure, the side face of the second water collecting ring 17 is connected with the inner wall of the second connecting pipe 12, the diameter of the lower bottom face of the second water collecting ring 17 is smaller than that of the upper bottom face, a second sewer pipe 18 is arranged on the inner wall of the second water collecting ring 17, the side face of the upper end of the second sewer pipe 18 is connected with the inner wall of the second water collecting ring 17, a motor 19 is arranged on the lower bottom face of the second water collecting ring 17, and a driving gear 20 is arranged on a driving shaft of the motor 19.

The third water purifying tank 3 is composed of a third connecting pipe 21, a lower plate 22, a partition plate 23, a third water purifying ring 25, a fixing ring 26, a bearing 27, a rotating gear 28, a cylinder 29, a cover plate 30, a bottom plate 31 and a reverse osmosis membrane 33, the third connecting pipe 21 is provided with the lower plate 22, the partition plate 23, the third water purifying ring 25 and the fixing ring 26, the fixing ring 26 is provided with the bearing 27, the bearing 27 is provided with the cylinder 29, the cylinder 29 is provided with the rotating gear 28, the cover plate 30, the bottom plate 31 and the reverse osmosis membrane 33, the third connecting pipe 21 is of a hollow cylindrical structure, the upper end of the side surface of the third connecting pipe 21 is provided with an external thread, the external thread of the third connecting pipe 21 is connected with the internal thread of the second connecting pipe 12, the lower plate 22 is arranged below the third connecting pipe 21, the upper surface of the lower plate 22 is connected with the lower bottom surface of the third connecting pipe 21, the lower plate 22 is provided with a water outlet pipe 5, the upper end of the water outlet pipe 5 passes through the lower plate 22, the lower end of the water outlet pipe 5 is provided with a valve 6.

The partition plate 23 is of a cylindrical structure, the side surface of the partition plate 23 is connected with the inner wall of the third connecting pipe 21, the partition plate 23 is provided with a connecting hole 16, the connecting hole 16 of the partition plate 23 is arranged under the second sewer pipe 18, a through hole 24 is arranged beside the connecting hole 16 of the partition plate 23, a driving shaft of the motor 19 penetrates through the through hole 24, a fixing ring 26 is arranged under the partition plate 23, the fixing ring 26 is of a circular ring structure, the side surface of the fixing ring 26 is connected with the inner wall of the third connecting pipe 21, the fixing ring 26 is arranged in parallel with the partition plate 23, the inner wall of the fixing ring 26 is provided with a bearing 27, the side surface of the bearing 27 is connected with the inner wall of the fixing ring 26, a cylinder 29 is arranged in the bearing 27, a third water ring 25 is arranged under the fixing ring 26, the third water ring 25 is of a hollow circular table structure, the side surface of the third water ring 25 is connected with the inner wall of the third connecting pipe 21, the diameter of the lower bottom surface of the third water ring 25 is smaller than that of the upper bottom surface, the inner wall of the third water ring 25 is connected with the side surface of the upper end of the water outlet pipe 5.

The cylinder 29 is of a hollow cylindrical structure, the cylinder 29 is sleeved with a rotary gear 28, the inner wall of the rotary gear 28 is connected with the side face of the cylinder 29, the rotary gear 28 is arranged between a partition plate 23 and a fixing ring 26, gear teeth of the rotary gear 28 are meshed with gear teeth of a driving gear 20, a cover plate 30 is arranged above the cylinder 29, the cover plate 30 is of a cylindrical structure, the lower bottom face of the cover plate 30 is connected with the upper bottom face of the cylinder 29, a connecting hole 16 is formed in the cover plate 30, the connecting hole 16 of the cover plate 30 is arranged right below the connecting hole 16 of the partition plate 23, a bottom plate 31 is arranged below the cylinder 29, the bottom plate 31 is of a cylindrical structure, the upper bottom face of the bottom plate 31 is connected with the lower bottom face of the cylinder 29, water seepage holes 32 are uniformly distributed in the side face of the cylinder 29, the water seepage holes 32 are arranged below a bearing 27, and a reverse osmosis membrane 33 is arranged in the cylinder 29 and the reverse osmosis membrane 33 is attached to the inner wall of the cylinder 29.

In the multi-stage filtration water purification system and the water purifier according to the embodiment, when in use, the ultraviolet lamp 15 in the second purified water tank 2 is turned on, then the second purified water tank 2 is installed in the first purified water tank 1, so that the first downcomer 11 is inserted into the connection hole 16 of the connection plate 13 and the sealing plate 14, the lower end of the first downcomer 11 passes through the sealing plate 14, the first connection pipe 7 and the second connection pipe 12 are screwed, then the third purified water tank 3 is installed on the second purified water tank 2, so that the second downcomer 18 is inserted into the connection hole 16 of the partition plate 23 and the cover plate 30, the lower end of the second downcomer 18 penetrates into the barrel 29, the second connection pipe 12 and the third connection pipe 21 are screwed, then one end of the tap water pipe is connected to the inlet pipe 4, so that the tap water can flow into the first purified water tank 1, after the tap water enters the first purified water tank 1, the tap water is primarily purified by the filter screen 9 below due to the tap water pressure, the filter screen 9 filters out the metal and other substances with larger particles in the tap water, the water flows out of the filter screen 9 and falls into the first water collecting ring 10 below, and flows into the second water purifying tank 2 through the first sewer pipe 11, the ultraviolet lamp 15 in the second water purifying tank 2 can effectively kill bacteria in the tap water on the second water collecting ring 17 to purify the tap water for the second time, then the tap water flows into the barrel body 29 through the second sewer pipe 18, the tap water enters the barrel body 29 and is filtered by the reverse osmosis membrane 33, fine impurities in the tap water are filtered out, the filtered tap water flows into the third water collecting ring 25 through the water seepage holes 32 on the barrel body 29, the lower valve 6 is opened when water is needed, the filtered water can be used, if a large amount of water is needed, the motor 19 is opened, the motor 19 drives the driving gear 20 to rotate, the driving gear 20 enables the barrel body 29 to rotate, the barrel body 29 rotates to generate stronger centrifugal force, the speed of tap water passing through the reverse osmosis membrane 33 is accelerated, and the water outlet efficiency is improved.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a multi-stage filtration water purification system and water purifier, includes first water purification case (1), inlet tube (4), second water purification case (2), third water purification case (3), outlet pipe (5) and valve (6), characterized by: the water purifier is characterized in that a water inlet pipe (4) and a second water purifying tank (2) are arranged on the first water purifying tank (1), a third water purifying tank (3) is arranged on the second water purifying tank (2), a water outlet pipe (5) is arranged on the third water purifying tank (3), and a valve (6) is arranged on the water outlet pipe (5).

2. The multi-stage filtration water purification system and the water purifier as claimed in claim 1, wherein: first water purification case (1), second water purification case (2) and third water purification case (3) top-down evenly set up, and the top of first water purification case (1) is equipped with inlet tube (4), and third water purification case (3) below is equipped with outlet pipe (5).

3. The multi-stage filtration water purification system and the water purifier as claimed in claim 1, wherein: first water purification case (1) is by first connecting pipe (7), upper plate (8), filter screen (9), first water ring (10) and first downcomer (11), first connecting pipe (7) are hollow cylinder type structure, the top of first connecting pipe (7) is equipped with upper plate (8), the lower part face of upper plate (8) is connected with the upper portion face of first connecting pipe (7), be equipped with inlet tube (4) on upper plate (8), inlet tube (4) pass upper plate (8), the lower extreme of first connecting pipe (7) inner wall is equipped with the internal thread, be equipped with filter screen (9) and first water ring (10) in first connecting pipe (7), be equipped with first downcomer (11) on first water ring (10).

4. The multi-stage filtration water purification system and the water purifier as claimed in claim 3, wherein: filter screen (9) set up in inlet tube (4) below, the edge of filter screen (9) is connected with the inner wall of first connecting pipe (7), filter screen (9) and upper plate (8) parallel arrangement, the below of filter screen (9) is equipped with first water ring (10) of gathering, first water ring (10) are hollow round platform type structure, the side of first water ring (10) of gathering is connected with the inner wall of first connecting pipe (7), bottom surface diameter is less than the bottom surface diameter under first water ring (10), be equipped with first downcomer (11) on the inner wall of first water ring (10), the side of first downcomer (11) upper end is connected with the inner wall of first water ring (10).

5. The multi-stage filtration water purification system and the water purifier as claimed in claim 1, wherein: the second water purification tank (2) is composed of a second connecting pipe (12), a connecting plate (13), a sealing plate (14), an ultraviolet lamp (15), a second water-collecting ring (17), a second sewer pipe (18), a motor (19) and a driving gear (20), the second connecting pipe (12) is of a hollow cylindrical structure, the side face of the upper end of the second connecting pipe (12) is provided with external threads, the external threads of the second connecting pipe (12) are connected with the internal threads of the first connecting pipe (7), the lower end of the inner wall of the second connecting pipe (12) is provided with internal threads, the second connecting pipe (12) is internally provided with the connecting plate (13), the sealing plate (14) and the second water-collecting ring (17), the ultraviolet lamp (15) is arranged on the connecting plate (13), the second water-collecting ring (17) is provided with the second sewer pipe (18) and the motor (19), and the driving gear (20) is arranged on the motor (19).

6. The multi-stage filtration water purification system and the water purifier as claimed in claim 5, wherein: the connecting plate (13) is of a cylindrical structure, the connecting plate (13) and the upper plate (8) are arranged in parallel, the side face of the connecting plate (13) is connected with the inner wall of the second connecting pipe (12), a connecting hole (16) is formed in the connecting plate (13), the connecting hole (16) is formed right below the first lower water pipe (11), ultraviolet lamps (15) are uniformly distributed on the lower face of the connecting plate (13), and a sealing plate (14) is arranged below the connecting plate (13).

7. The multi-stage filtration water purification system and the water purifier as claimed in claim 5, wherein: the sealing plate (14) is arranged in parallel with the connecting plate (13), the sealing plate (14) is made of hard transparent materials, the sealing plate (14) is of a cylindrical structure, the side face of the sealing plate (14) is connected with the inner wall of the second connecting pipe (12), a connecting hole (16) is formed in the sealing plate (14), the connecting hole (16) of the sealing plate (14) is arranged under the connecting hole (16) of the connecting plate (13), a second water accumulation ring (17) is arranged under the sealing plate (14), the second water accumulation ring (17) is of a hollow circular table type structure, the side face of the second water accumulation ring (17) is connected with the inner wall of the second connecting pipe (12), the diameter of the lower bottom face of the second water accumulation ring (17) is smaller than that of the upper bottom face, a second sewer pipe (18) is arranged on the inner wall of the second water accumulation ring (17), the side face of the upper end of the second sewer pipe (18) is connected with the inner wall of the second water accumulation ring (17), the lower bottom surface of the second water-collecting ring (17) is provided with a motor (19), and a driving gear (20) is arranged on a driving shaft of the motor (19).

8. The multi-stage filtration water purification system and the water purifier as claimed in claim 1, wherein: the third water purifying tank (3) is composed of a third connecting pipe (21), a lower plate (22), a partition plate (23), a third water purifying ring (25), a fixing ring (26), a bearing (27), a rotary gear (28), a cylinder body (29), a cover plate (30), a bottom plate (31) and a reverse osmosis membrane (33), the lower plate (22), the partition plate (23), the third water purifying ring (25) and the fixing ring (26) are arranged on the third connecting pipe (21), the bearing (27) is arranged on the fixing ring (26), the cylinder body (29) is arranged on the bearing (27), the rotary gear (28) is arranged on the cylinder body (29), the cover plate (30), the bottom plate (31) and the reverse osmosis membrane (33), the third connecting pipe (21) is of a hollow cylindrical structure, external threads are arranged at the upper end of the side surface of the third connecting pipe (21), and the external threads of the third connecting pipe (21) are connected with the internal threads of the second connecting pipe (12), a lower plate (22) is arranged below the third connecting pipe (21), the upper surface of the lower plate (22) is connected with the lower bottom surface of the third connecting pipe (21), a water outlet pipe (5) is arranged on the lower plate (22), the upper end of the water outlet pipe (5) penetrates through the lower plate (22), and a valve (6) is arranged at the lower end of the water outlet pipe (5).

9. The multi-stage filtration water purification system and the water purifier as claimed in claim 8, wherein: the partition plate (23) is of a cylindrical structure, the side face of the partition plate (23) is connected with the inner wall of a third connecting pipe (21), a connecting hole (16) is formed in the partition plate (23), the connecting hole (16) of the partition plate (23) is formed right below a second sewer pipe (18), a through hole (24) is formed beside the connecting hole (16) of the partition plate (23), a driving shaft of a motor (19) penetrates through the through hole (24), a fixing ring (26) is arranged below the partition plate (23), the fixing ring (26) is of a circular ring type structure, the side face of the fixing ring (26) is connected with the inner wall of the third connecting pipe (21), the fixing ring (26) is arranged in parallel with the partition plate (23), a bearing (27) is arranged on the inner wall of the fixing ring (26), the side face of the bearing (27) is connected with the inner wall of the fixing ring (26), a barrel body (29) is arranged in the bearing (27), a third water ring (25) is arranged below the fixing ring (26), the third water ring (25) is of a hollow round platform structure, the side surface of the third water ring (25) is connected with the inner wall of the third connecting pipe (21), the diameter of the lower bottom surface of the third water ring (25) is smaller than that of the upper bottom surface, and the inner wall of the third water ring (25) is connected with the side surface of the upper end of the water outlet pipe (5).

10. The multi-stage filtration water purification system and the water purifier as claimed in claim 8, wherein: the cylinder body (29) is of a hollow cylindrical structure, a rotary gear (28) is sleeved on the cylinder body (29), the inner wall of the rotary gear (28) is connected with the side face of the cylinder body (29), the rotary gear (28) is arranged between a partition plate (23) and a fixing ring (26), gear teeth of the rotary gear (28) are meshed with gear teeth of a driving gear (20), a cover plate (30) is arranged above the cylinder body (29), the cover plate (30) is of a cylindrical structure, the lower bottom face of the cover plate (30) is connected with the upper bottom face of the cylinder body (29), a connecting hole (16) is formed in the cover plate (30), the connecting hole (16) of the cover plate (30) is arranged under the connecting hole (16) of the partition plate (23), a bottom plate (31) is arranged below the cylinder body (29), the bottom plate (31) is of a cylindrical structure, the upper bottom face of the bottom plate (31) is connected with the lower bottom face of the cylinder body (29), and water seepage holes (32) are uniformly distributed on the side face of the cylinder body (29), the water seepage hole (32) is arranged below the bearing (27), a reverse osmosis membrane (33) is arranged in the cylinder body (29), and the reverse osmosis membrane (33) is attached to the inner wall of the cylinder body (29).