Multi-stage water treatment purification system

Abstract

The invention belongs to the technical field of water treatment purification systems, and discloses a multistage water treatment purification system which comprises a first treatment box, a second treatment pipe and a third adsorption cylinder, a water inlet pipe is fixedly arranged on the first treatment box, the first treatment box is communicated with the third adsorption cylinder through the second treatment pipe, and a water outlet pipe is fixedly arranged on the third adsorption cylinder. An arc-shaped coarse filter screen is fixedly arranged in the first treatment box, the second treatment pipe comprises an upper pipeline, a connecting frame and a lower pipeline which are sequentially connected into a whole, the upper pipeline is fixedly communicated with the first treatment box, the lower pipeline is fixedly communicated with the third adsorption barrel, and a gap is reserved between the upper pipeline and the lower pipeline; a filter screen switching mechanism is arranged in the reserved gap; the filter screen switching mechanism comprises a bottom plate, a top plate, a filtering switching piece and a driving piece; according to the invention, impurities on the fine filter screen can automatically fall off in the process of replacing the filter switching piece, so that an automatic cleaning process is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of water treatment and purification systems, and in particular relates to a multi-stage water treatment and purification system. Background Art

[0002] In daily life, domestic sewage needs to be filtered after the addition of flocculants to remove the sediment produced by flocculation. Usually, it is necessary to first filter the larger particles of impurities through a large-pore filter, and then filter the smaller particles of impurities through a small-pore filter. Finally, the sewage after multiple filtrations is purified and adsorbed by the medium. However, the small-pore filter is prone to clogging during use due to its smaller pore size and finer filtration accuracy. After clogging, it is necessary to stop the water treatment and replace the small-pore filter to ensure the filtration effect of the filter switching component. This is undoubtedly cumbersome to operate and reduces the treatment efficiency. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a multi-stage water treatment and purification system, which effectively solves the problem that small-aperture filters are prone to clogging during use due to their small aperture and finer filtering accuracy. After clogging, it is necessary to stop water treatment and replace the small-aperture filter to ensure the filtering effect of the filter switching component. This is undoubtedly cumbersome to operate and reduces the processing efficiency.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-stage water treatment and purification system, comprising a first treatment box, a second treatment pipe and a third adsorption cylinder, the first treatment box is fixedly provided with an inlet pipe, the first treatment box is connected with the third adsorption cylinder through the second treatment pipe, the third adsorption cylinder is fixedly provided with a water outlet pipe, the first treatment box is fixedly provided with an arc-shaped coarse filter screen inside, the second treatment pipe comprises an upper pipe, a connecting frame and a lower pipe which are connected in sequence, wherein the upper pipe is fixedly connected with the first treatment box, the lower pipe is fixedly connected with the third adsorption cylinder, a gap is reserved between the upper pipe and the lower pipe, and a filter screen switching mechanism is arranged in the reserved gap; the filter screen switching mechanism comprises a bottom plate, a top plate, a filter switching member and a driving member; wherein the bottom plate is fixedly provided on the lower pipe, a water discharge hole and a material discharge hole are provided on the bottom plate, the water discharge hole is connected with the lower pipe, the top plate is rotatably provided on the bottom plate, at least two mounting holes are provided on the top plate, the filter switching member is arranged in the mounting hole and is arranged one-to-one with the mounting holes, the driving member is fixedly provided on the upper pipe and is used to drive the top plate to rotate;

[0005] The filter switching member includes a ring body, a fine filter screen, a connecting shaft, a gear and a rack. The fine filter screen is fixedly arranged in the ring body. The ring body is rotatably arranged in the mounting hole. The ring body is fixedly arranged with the gear through the connecting shaft. The rack is fixedly arranged on the outer wall of the bottom plate and meshes with the gear.

[0006] The outer wall of the ring body is provided with an elastic sealing ring so that the outer side of the ring body has the ability to deform and can be turned over inside the mounting hole, and the elastic force of the elastic sealing ring can stably keep the ring body in the turned over state.

[0007] Preferably, the driving member includes a driving motor, which is fixedly disposed on the upper pipe and is used to drive the top plate to rotate.

[0008] Preferably, an upper shell is arranged above the top plate, the upper shell is fixedly arranged with the first processing box, a lower shell is fixedly arranged below the bottom plate, the upper shell is connected with the lower shell through corresponding mounting holes, a collection box is drawably arranged on the outer wall of the lower shell, and a handle is fixedly arranged on the collection box.

[0009] Preferably, a central tube is fixedly provided at the center of the bottom plate, and an air impact device for providing airflow impact for the central tube is provided on the outer side of the top plate; a side opening is provided on the central tube, a tube groove and at least two connecting channels are provided at the center of the top plate, both connecting channels are connected with the tube groove, the tube groove and the central tube are rotatably matched, an upper spray hole, an upper gas supply channel and an upper interface are provided inside the ring body, the upper spray hole is connected with the upper interface through the upper gas supply channel, a lower spray hole, a lower gas supply channel and a lower interface are also provided inside the ring body, the lower spray hole is connected with the lower interface through the lower gas supply channel, and the upper interface and the lower interface are used in conjunction with the corresponding connecting channel and the side opening.

[0010] Preferably, the air impulse device comprises a fixedly arranged fan and a duct, one end of the fan is connected to the interior of the upper shell, the other end of the fan is fixedly connected to the duct, and the duct is fixedly connected to the central tube.

[0011] Preferably, a filter chamber and a collection chamber are formed inside the first treatment box, wherein the water inlet pipe and the arc-shaped coarse filter are fixedly arranged in the filter chamber, the filter chamber is fixedly connected to the upper pipe, a scraping mechanism is arranged in the filter chamber, and a side door is hingedly arranged on the outer wall of the collection chamber.

[0012] Preferably, the scraping mechanism includes a scraping motor, a driving shaft and a scraping frame, wherein the scraping motor is fixedly arranged on the first processing box and is used to drive the driving shaft to rotate, the driving shaft is rotatably arranged in the filter chamber and is located above the arc-shaped coarse filter screen, the scraping frame is U-shaped and is provided with multiple scraping frames, and the multiple scraping frames are fixedly arranged on the driving shaft.

[0013] Preferably, two filter plates are fixedly arranged inside the third adsorption cylinder, and an activated carbon adsorption layer is filled between the two filter plates.

[0014] Preferably, a locking piece for locking the ring body is provided inside the lower pipe, and the locking piece includes two electric push rods and a locking ring, wherein a mounting ring is fixedly provided inside the lower pipe, and the two electric push rods are fixedly provided on the mounting ring, and the locking ring is slidably provided inside the lower pipe and fixed to the output ends of the two electric push rods.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. During operation, by using the driving member, bottom plate, top plate and filter switching member in coordination, the filter switching member can be replaced in time after the filter switching member is blocked, which is more convenient;

[0017] 2. During operation, through the cooperation of the fine filter, gears and racks, the fine filter inside can be turned over during the replacement of the filter switching part, so that impurities on the fine filter can fall off automatically, thus realizing the automatic cleaning process;

[0018] 3. During operation, through the cooperation of the air-blasting equipment, the central tube, the ring body, etc., after the fine filter is turned over, the air-blasting equipment can be used to impact the side of the fine filter containing impurities, thereby further improving the cleaning effect of the fine filter;

[0019] 4. During operation, since the fine filter will be turned over regularly, impurities will not be pressed on the same side of the fine filter all the time, and the same side of the fine filter will not be deformed due to long-term pressure, which plays a protective role on the fine filter;

[0020] 5. During operation, when there are a lot of impurities accumulated on the arc-shaped coarse filter, the scraper mechanism can be used to clean and transfer the impurities to ensure the use effect of the coarse filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0022] In the attached picture:

[0023] Figure 1 It is a schematic diagram of the structure of a multi-stage water treatment and purification system of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the first processing box of the present invention;

[0025] Figure 3 It is a schematic diagram of the internal structure of the third adsorption cylinder of the present invention;

[0026] Figure 4 It is a schematic diagram of the installation structure of the bottom plate, top plate, air impingement equipment, etc. of the present invention;

[0027] Figure 5 This is a schematic diagram of the installation structure of the second processing tube of the present invention;

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of the three-dimensional cross-sectional structure;

[0029] Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle;

[0030] Figure 8 This is one of the schematic diagrams of the matching structure of the bottom plate and the top plate of the present invention;

[0031] Fig. 9 This is the second schematic diagram of the matching structure of the bottom plate and the top plate of the present invention;

[0032] Fig.10 It is a schematic diagram of the locking member structure of the present invention.

[0033] In the figure: 1, first treatment box; 2, second treatment pipe; 3, third adsorption cylinder; 4, water inlet pipe; 5, water outlet pipe; 6, arc coarse filter; 7, upper pipe; 8, connecting frame; 9, lower pipe; 10, bottom plate; 11, top plate; 12, water discharge hole; 13, material discharge hole; 14, mounting hole; 15, driving motor; 16, ring body; 17, fine filter; 18, connecting shaft; 19, gear; 20, rack; 21, upper shell; 22, lower shell; 23, collection box; 24, handle; 2 5. Center tube; 26. Side opening; 27. Tube groove; 28. Connecting channel; 29. ​​Upper spray hole; 30. Upper air supply channel; 31. Upper interface; 32. Lower spray hole; 33. Lower air supply channel; 34. Lower interface; 35. Fan; 36. Conduit; 37. Filter chamber; 38. Collecting chamber; 39. Side door; 40. Slag scraper motor; 41. Drive shaft; 42. Slag scraper frame; 43. Filter plate; 44. Activated carbon adsorption layer; 45. Mounting ring; 46. Electric push rod; 47. Locking ring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] Depend on Figure 1-10 The present invention relates to a multi-stage water treatment purification system, comprising a first treatment box 1, a second treatment pipe 2 and a third adsorption cylinder 3, a water inlet pipe 4 is fixedly arranged on the first treatment box 1, the first treatment box 1 is connected with the third adsorption cylinder 3 through the second treatment pipe 2, a water outlet pipe 5 is fixedly arranged on the third adsorption cylinder 3, and an arc-shaped coarse filter screen 6 is fixedly arranged inside the first treatment box 1; in this design, sewage enters the interior of the first treatment box 1 through the water inlet pipe 4, and large-sized impurities in the sewage are filtered through the arc-shaped coarse filter screen 6 in the first treatment box 1, and then the impurities of small size are filtered through the filter switching member in the second treatment pipe 2, and finally the sewage after the secondary filtration is purified and adsorbed by the third adsorption cylinder 3, so as to further reduce the particulate matter and odor in the sewage.

[0036] Considering that the filter switching element in the second treatment pipe 2 is prone to clogging after a period of use due to its finer filtration accuracy, and after clogging, it is necessary to stop water treatment and replace the filter switching element to ensure the filtration effect of the filter switching element. In order to solve the above technical problems, the following technical solutions are provided: the second treatment pipe 2 includes an upper pipe 7, a connecting frame 8 and a lower pipe 9 which are connected in sequence, wherein the upper pipe 7 is fixedly connected to the first treatment box 1, the lower pipe 9 is fixedly connected to the third adsorption cylinder 3, and the upper pipe 7 and the lower pipe 9 are connected. A reserved gap is provided in which a filter switching mechanism is arranged; the filter switching mechanism comprises a bottom plate 10, a top plate 11, a filter switching member and a driving member; wherein the bottom plate 10 is fixedly arranged on the lower pipe 9, a water discharge hole 12 and a material discharge hole 13 are provided on the bottom plate 10, the water discharge hole 12 is communicated with the lower pipe 9, the top plate 11 is rotatably arranged on the bottom plate 10, at least two mounting holes 14 are provided on the top plate 11, the filter switching member is arranged in the mounting holes 14 and is arranged one-to-one with the mounting holes 14, and the driving member is fixedly arranged on the upper pipe 7 and is used to drive the top plate 11 to rotate;

[0037] With such a design, when in use, the sewage in the first treatment box 1 passes through the upper pipe 7, the filter switching element, the drain hole 12 and the lower pipe 9 in sequence and enters the interior of the third adsorption cylinder 3; and when the filter switching element is blocked, the top plate 11 is driven to rotate by the driving element, so that the blocked filter switching element is moved out from between the upper pipe 7 and the lower pipe 9, and correspondingly, the filter switching element in another mounting hole 14 located on the outside is moved between the upper pipe 7 and the lower pipe 9, thereby realizing a quick replacement process of the filter switching element, which is more convenient.

[0038] It should be noted that in order to ensure the sealing performance between the upper pipe 7 and the top plate 11, the sealing performance between the lower pipe 9 and the bottom plate 10, and the sealing performance between the top plate 11 and the bottom plate 10, wear-resistant sealing rings or wear-resistant sealing pads can be arranged on the contact surfaces of each other to ensure the sealing effect.

[0039] Specifically, the driving member includes a driving motor 15 , which is fixedly disposed on the upper pipe 7 and is used to drive the top plate 11 to rotate.

[0040] Considering that a lot of foreign matter will be attached to the surface of the filter switching member after it is removed, in order to facilitate the cleaning of the foreign matter on it, the filter switching member includes a ring body 16, a fine filter screen 17, a connecting shaft 18, a gear 19 and a rack 20. The fine filter screen 17 is fixedly arranged in the ring body 16, and the ring body 16 is rotatably arranged in the mounting hole 14. The ring body 16 is fixedly arranged with the gear 19 through the connecting shaft 18, and the rack 20 is fixedly arranged on the outer wall of the bottom plate 10 and meshes with the gear 19.

[0041] With such a design, when in use, sewage is subjected to secondary fine filtration through the fine filter 17. When the fine filter 17 is blocked and transferred, when the driving member drives the top plate 11 to move, the gear 19 on the top plate 11 will move along the rack 20, so that the gear 19 drives the ring body 16 to rotate through the connecting shaft 18. The ring body 16 is flipped 180 degrees so that the mesh surface of the fine filter 17 above it with impurities faces, and at this time, the impurities fall under the action of gravity, thereby realizing the automatic cleaning process of the impurities, which is more convenient.

[0042] It should be noted that an elastic sealing ring is provided on the outer wall of the ring body 16 so that the outer side of the ring body 16 has the ability to deform and can be turned over inside the mounting hole 14, and the elastic force of the elastic sealing ring can stably maintain the turned-over state of the ring body 16; and the fine filter 17 will be turned over at regular intervals during use, so that impurities will not be pressed on one side of the fine filter 17 all the time, thereby avoiding the fine filter 17 from being deformed due to long-term pressure, thereby playing a protective role.

[0043] Furthermore, an upper shell 21 is arranged above the top plate 11, and the upper shell 21 is fixedly arranged with the first processing box 1, and a lower shell 22 is fixedly arranged below the bottom plate 10, and the upper shell 21 is connected with the lower shell 22 through the corresponding mounting hole 14, and a collecting box 23 is provided on the outer wall of the lower shell 22, and a handle 24 is fixedly arranged on the collecting box 23; with this design, it is convenient to collect fallen impurities through the collecting box 23, and at the same time, the upper shell 21 cooperates with the setting of the lower shell 22 to wrap the mounting hole 14 located on the outside to reduce the emission of impurities and odor; similarly, wear-resistant sealing gaskets can be arranged between the upper shell 21 and the top plate 11 and between the lower shell 22 and the bottom plate 10 to improve the sealing performance.

[0044] In order to further improve the cleaning effect of the fine filter 17, a central tube 25 is fixedly arranged at the center of the bottom plate 10, and an air impact device for providing airflow impact for the central tube 25 is arranged on the outer side of the top plate 11; a side opening 26 is opened on the central tube 25, and a tube groove 27 and at least two connecting channels 28 are opened at the center of the top plate 11, and the two connecting channels 28 are both connected to the tube groove 27, and the tube groove 27 is rotatably matched with the central tube 25. An upper spray hole 29, an upper gas transmission channel 30 and an upper interface 31 are opened inside the ring body 16, and the upper spray hole 29 is connected to the upper interface 31 through the upper gas transmission channel 30. A lower spray hole 32, a lower gas transmission channel 33 and a lower interface 34 are also opened inside the ring body 16, and the lower spray hole 32 is connected to the lower interface 34 through the lower gas transmission channel 33, and the upper interface 31 and the lower interface 34 are used in conjunction with the corresponding connecting channel 28 and the side opening 26;

[0045] With this design, when the fine filter 17 in the filter element is transferred and turned over, an air flow is generated by the air impact device, and the air flow passes through the central tube 25, the side opening 26, the connecting channel 28, the lower interface 34, and the lower air supply channel 33 in sequence, and then is ejected from the lower spray hole 32, and the air flow impacts the side of the fine filter 17 containing impurities, thereby further enhancing the cleaning effect of the impurities in the fine filter 17.

[0046] Specifically, the air impingement device includes a fixedly installed fan 35 and a duct 36, one end of the fan 35 is connected to the interior of the upper shell 21, the other end of the fan 35 is fixedly connected to the duct 36, and the duct 36 is fixedly connected to the center tube 25; with this design, a wind flow is generated by the fan 35, and the wind flow circulates between the fan 35, the duct 36, the upper shell 21 and the lower shell 22, ensuring a relatively closed environment to prevent impurities and odors from being emitted to the outside.

[0047] Furthermore, a filter chamber 37 and a collection chamber 38 are formed inside the first treatment box 1, wherein the water inlet pipe 4 and the arc-shaped coarse filter screen 6 are fixedly arranged in the filter chamber 37, the filter chamber 37 is fixedly connected with the upper pipe 7, a scraping mechanism is arranged in the filter chamber 37, and a side door 39 is hingedly arranged on the outer wall of the collection chamber 38;

[0048] The scraping mechanism includes a scraping motor 40, a driving shaft 41 and a scraping frame 42, wherein the scraping motor 40 is fixedly arranged on the first processing box 1 and is used to drive the driving shaft 41 to rotate, the driving shaft 41 is rotatably arranged in the filter chamber 37 and is located above the arc-shaped coarse filter screen 6, and the scraping frame 42 is U-shaped and is provided with a plurality of scraping frames 42, and the plurality of scraping frames 42 are fixedly arranged on the driving shaft 41;

[0049] With this design, sewage enters the filter chamber 37 through the water inlet pipe 4, and large-sized impurities in the sewage are filtered through the arc-shaped coarse filter screen 6. The filtered impurities are accumulated on the arc-shaped coarse filter screen 6. The drive shaft 41 is driven to rotate by the scraper motor 40, and the drive shaft 41 drives the scraper frame 42 to rotate. The impurities on the arc-shaped coarse filter screen 6 are transferred to the inside of the collection chamber 38 through the scraper frame 42. When a large amount of impurities accumulate in the collection chamber 38, they can be cleaned regularly by opening the side door 39.

[0050] Furthermore, two filter plates 43 are fixedly arranged inside the third adsorption cylinder 3, and an activated carbon adsorption layer 44 is filled between the two filter plates 43. With this design, the particulate impurities and harmful substances in the sewage after secondary filtration can be adsorbed and purified by the activated carbon adsorption layer 44, and the adsorption and purification of sewage can also be strengthened in combination with other media, such as expanded clay, fiber balls, etc.

[0051] Considering that the fine filter 17 on the ring body 16 may have a problem of insufficient stability when impacted by water flow, a locking member for locking the ring body 16 is provided inside the lower pipe 9, and the locking member includes two electric push rods 46 and a locking ring 47, wherein a mounting ring 45 is fixedly provided inside the lower pipe 9, and the two electric push rods 46 are fixedly provided on the mounting ring 45, and the locking ring 47 is slidably provided inside the lower pipe 9 and fixed to the output ends of the two electric push rods 46;

[0052] With this design, after the fine filter 17 is transferred between the upper pipe 8 and the lower pipe 9, the locking ring 47 is driven upward by the electric push rod 46, and the ring body 16 is supported and limited by the locking ring 47 to improve the stability of the fine filter 17 in the ring body 16 during use.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage water treatment and purification system, comprising a first treatment box (1), a second treatment pipe (2) and a third adsorption cylinder (3), wherein a water inlet pipe (4) is fixedly arranged on the first treatment box (1), the first treatment box (1) is connected to the third adsorption cylinder (3) through the second treatment pipe (2), a water outlet pipe (5) is fixedly arranged on the third adsorption cylinder (3), and an arc-shaped coarse filter (6) is fixedly arranged inside the first treatment box (1), characterized in that: The second processing tube (2) comprises an upper pipe (7), a connecting frame (8) and a lower pipe (9) which are connected in sequence as one body, wherein the upper pipe (7) is fixedly connected to the first processing box (1), and the lower pipe (9) is fixedly connected to the third adsorption cylinder (3). A gap is reserved between the upper pipe (7) and the lower pipe (9), and a filter switching mechanism is arranged in the reserved gap; the filter switching mechanism comprises a bottom plate (10), a top plate (11), a filter switching member and a driving member; wherein the bottom plate (10) The bottom plate (10) is fixedly arranged on the lower pipe (9), a water discharge hole (12) and a material discharge hole (13) are provided on the bottom plate (10), the water discharge hole (12) is communicated with the lower pipe (9), the top plate (11) is rotatably arranged on the bottom plate (10), at least two mounting holes (14) are provided on the top plate (11), the filter switching element is arranged in the mounting holes (14) and is arranged one-to-one with the mounting holes (14), and the driving element is fixedly arranged on the upper pipe (7) and is used to drive the top plate (11) to rotate; The filter switching member comprises a ring body (16), a fine filter screen (17), a connecting shaft (18), a gear (19) and a rack (20); the fine filter screen (17) is fixedly arranged in the ring body (16); the ring body (16) is rotatably arranged in the mounting hole (14); the ring body (16) is fixedly arranged with the gear (19) via the connecting shaft (18); and the rack (20) is fixedly arranged on the outer wall of the bottom plate (10) and meshes with the gear (19); An elastic sealing ring is provided on the outer wall of the ring body (16) so that the outer side of the ring body (16) has the ability to deform and can be turned over inside the mounting hole (14), and the elastic force of the elastic sealing ring can enable the ring body (16) to stably maintain the turned-over state.

2. A multi-stage water treatment and purification system according to claim 1, characterized in that: The driving member comprises a driving motor (15), which is fixedly arranged on the upper pipe (7) and is used to drive the top plate (11) to rotate.

3. A multi-stage water treatment and purification system according to claim 1, characterized in that: An upper shell (21) is arranged above the top plate (11), and the upper shell (21) is fixedly arranged with the first processing box (1). A lower shell (22) is fixedly arranged below the bottom plate (10), and the upper shell (21) is connected with the lower shell (22) through corresponding mounting holes (14). A collection box (23) is drawably arranged on the outer wall of the lower shell (22), and a handle (24) is fixedly arranged on the collection box (23).

4. A multi-stage water treatment and purification system according to claim 3, characterized in that: A central tube (25) is fixedly arranged at the center of the bottom plate (10), and an air impact device for providing air impact to the central tube (25) is arranged on the outer side of the top plate (11); a side opening (26) is provided on the central tube (25), a tube groove (27) and at least two connecting channels (28) are provided at the center of the top plate (11), the two connecting channels (28) are both connected to the tube groove (27), the tube groove (27) and the central tube (25) are rotatably matched, and an upper opening (26) is provided inside the ring body (16) The upper spray hole (29), the upper gas transmission channel (30) and the upper interface (31), the upper spray hole (29) is connected to the upper interface (31) through the upper gas transmission channel (30), the inner part of the ring body (16) is also provided with a lower spray hole (32), a lower gas transmission channel (33) and a lower interface (34), the lower spray hole (32) is connected to the lower interface (34) through the lower gas transmission channel (33), and the upper interface (31) and the lower interface (34) are used in conjunction with the corresponding connecting channel (28) and the side opening (26).

5. A multi-stage water treatment and purification system according to claim 4, characterized in that: The air impingement device comprises a fixedly arranged fan (35) and a conduit (36); one end of the fan (35) is in communication with the interior of the upper housing (21); the other end of the fan (35) is in fixed communication with the conduit (36); and the conduit (36) is in fixed communication with the central tube (25).

6. A multi-stage water treatment and purification system according to claim 1, characterized in that: A filter chamber (37) and a collection chamber (38) are formed inside the first treatment box (1), wherein the water inlet pipe (4) and the arc-shaped coarse filter (6) are fixedly arranged in the filter chamber (37), the filter chamber (37) is fixedly connected to the upper pipe (7), a scraping mechanism is arranged in the filter chamber (37), and a side door (39) is hingedly arranged on the outer wall of the collection chamber (38).

7. A multi-stage water treatment and purification system according to claim 6, characterized in that: The scraping mechanism comprises a scraping motor (40), a driving shaft (41) and a scraping frame (42), wherein the scraping motor (40) is fixedly arranged on the first processing box (1) and is used to drive the driving shaft (41) to rotate, the driving shaft (41) is rotatably arranged in the filter cavity (37) and is located above the arc-shaped coarse filter screen (6), and the scraping frame (42) is U-shaped and is provided in plurality, and the plurality of scraping frames (42) are all fixedly arranged on the driving shaft (41).

8. A multi-stage water treatment and purification system according to claim 1, characterized in that: Two filter plates (43) are fixedly arranged inside the third adsorption cylinder (3), and an activated carbon adsorption layer (44) is filled between the two filter plates (43).

9. A multi-stage water treatment and purification system according to claim 1, characterized in that: A locking member for locking the ring body (16) is arranged inside the lower pipe (9), and the locking member comprises two electric push rods (46) and a locking ring (47), wherein a mounting ring (45) is fixedly arranged inside the lower pipe (9), the two electric push rods (46) are fixedly arranged on the mounting ring (45), and the locking ring (47) is slidably arranged inside the lower pipe (9) and fixed to the output ends of the two electric push rods (46).

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