Filter element for a multi-stage water purifier

Abstract

The application relates to the technical field of filter cartridges of water purifiers, and discloses a filter cartridge for a multistage water purifier, which comprises a top ring, the bottom end of the top ring is provided with a filter layer, the filter cartridge is provided with rotatable cleaning assemblies between each layer of filter layers, water distribution assemblies are arranged through the bottom of the cleaning assemblies, so that water can be supplied through the water distribution assemblies when the filter cartridge needs to be cleaned, the cleaning water enters the cleaning assemblies from the water distribution assemblies, and is finally sprayed from the cleaning long pipes; the cleaning long pipes are vertically arranged at the same height as the filter layers; the filter cartridge bottom is inserted from the outside to drive the connection rotating ring to rotate, and the cleaning long pipes are driven to rotate between the filter layers, so that the cleaning long pipes can not only spray water to clean the filter layers during the rotating process, but also can scrape off the accumulated particle impurities on the filter layers, and the cleaning effect is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of filter cartridges of water purifiers, and particularly relates to a filter cartridge for a multistage water purifier. BACKGROUND

[0002] The filter cartridge is a core part of the water purifier, can separate solid particles in water or make different substances fully contact to accelerate reaction time, so that impure liquid flows into the filter cartridge, impurities are separated out after being filtered through a filter screen and a filter absorption layer arranged in the filter cartridge, and clean water flows out of the filter cartridge, thereby achieving the purifying effect. However, the existing filter cartridge still has some problems, which are as follows.

[0003] Most of the existing filter cartridges are formed by simply assembling multiple filter layers, so that water flows in from one end, and then flows out from the outside after being filtered by the filter layers. However, the mesh holes of the filter layers are gradually blocked by the separated and filtered solid particles after long-time use, thereby causing the water permeability of the filter cartridge to gradually decrease, and the filter cartridge needs to be replaced or cleaned regularly. Even if the filter cartridge is cleaned, the filter layer in the central part cannot be cleaned well, and most people directly replace the filter cartridge after using the filter cartridge for a period of time, so that the service life of the filter cartridge is reduced, and the use cost is increased. Therefore, the application provides a filter cartridge for a multistage water purifier. SUMMARY

[0004] The application provides a filter cartridge for a multistage water purifier, which has the advantages of good self-cleaning effect and long service life, and solves the problems in the background technology.

[0005] The application provides the following technical scheme: a filter cartridge for a multistage water purifier, which comprises a top ring, a filter layer is arranged at the bottom end of the top ring, a sealing assembly is fixedly installed at the bottom end of the filter layer, an extension ring shell is fixedly installed at the bottom end of the sealing assembly, a waste water discharge grid is arranged at the bottom end of the extension ring shell, a separation ring plate is fixedly installed in the extension ring shell, a butt joint ring is movably installed on the separation ring plate, a cleaning assembly is movably installed on the sealing assembly, an upper sealing assembly is fixedly installed at the bottom end of the sealing assembly, a pulling assembly is arranged at the bottom end of the upper sealing assembly, an outer water guide pipe is fixedly installed at the bottom end of the extension ring shell, a water inlet distribution assembly is fixedly installed at the bottom end of the outer water guide pipe, a bottom sealing plate is fixedly installed at the bottom end of the filter layer, a connecting rotating ring is movably installed on the extension ring shell, and a flow direction limiting plate is fixedly installed at the bottom end of the top ring.

[0006] The closed assembly comprises a first ring, a second ring mounted on the inner ring of the first ring, a third ring mounted on the inner ring of the second ring, discharge grooves formed on the second ring and the third ring, and an insertion groove formed on the inner ring of the first ring and the second ring.

[0007] The cleaning assembly comprises a water inlet flat pipe, a connecting ring seat fixedly mounted at the top end of the water inlet flat pipe, and a cleaning long pipe fixedly mounted at the top end of the connecting ring seat.

[0008] The upper sealing assembly comprises a sealing ring, and a butt joint seat fixedly mounted at the bottom end of the sealing ring.

[0009] The pulling assembly comprises a bottom block, a vertical plate fixedly mounted at the top end of the bottom block, an arc-shaped support suspension rod fixedly mounted at the top end of the vertical plate, a base fixedly mounted at the top end of the arc-shaped support suspension rod, a butt joint fixedly mounted on the base, a spring fixedly mounted at the top end of the bottom block, and limiting blocks fixedly mounted at both ends of the top end of the bottom block.

[0010] The water inlet distribution assembly comprises a water guide cavity shell, an extension insertion convex shell fixedly mounted at the bottom end of the water guide cavity shell, an outer water inlet pipe fixedly mounted at the bottom end of the water guide cavity shell, and a one-way flow structure fixedly mounted in the water guide cavity shell.

[0011] In a preferred embodiment, the filter layer and the flow direction limiting plate are arranged in an interlaced and inserted manner, a plurality of small baffles are uniformly arranged on the flow direction limiting plate, and the small baffles are arranged in a one-way outward rotation opening manner.

[0012] In a preferred embodiment, the upper end and the lower end of the butt joint ring are rotatably arranged in the upper end and the lower end of the partition ring plate, the bottom end of the cleaning assembly is inserted into the butt joint ring and fixedly mounted, and the outer side of the butt joint ring is fixedly connected with the connecting rotating ring through a short rod.

[0013] In a preferred embodiment, the outer water guide pipe extends through the space between the partition ring plate and the inner ring of the extension ring shell and into the inner ring of the extension ring shell, the connecting rotating ring is protruded on the inner ring of the extension ring shell, and the connecting rotating ring is rotatably arranged in the inner ring of the extension ring shell.

[0014] In a preferred embodiment, the cleaning assembly is rotatably arranged between the first ring and the second ring and between the second ring and the third ring, the top end of the upper sealing assembly is rotatably and sealingly inserted into the discharge groove, one side of the insertion groove is a beveled groove structure, the insertion rod is rotatable around an axis, and a coil spring is sleeved on the rotation axis.

[0015] In a preferred embodiment, the water inlet flat pipe is fixedly inserted into the docking ring, the rotating path of the water inlet flat pipe passes through the position where the upper sealing assembly and the connecting part of the pulling assembly are connected, the end of the water inlet flat pipe is arranged in the space between the partition ring plate and the extension ring shell, the connecting ring seat is movably arranged in the sealing assembly, the cleaning long pipe is arranged in the filter layer, and a plurality of water outlet nozzle openings are arranged on one side of the cleaning long pipe.

[0016] In a preferred embodiment, the sealing ring is inserted into the discharge groove, the docking seat is provided with an insertion slot on the side where the pulling assembly is docked, and the top end of the pulling assembly is inserted into the insertion slot.

[0017] In a preferred embodiment, the bottom end of the bottom block is spaced apart from the inner bottom end of the water inlet distribution assembly, the base is arranged on each arc-shaped support suspension rod in a number greater than or equal to three, the docking head is movably arranged on the base, a coil spring is arranged on the rotating shaft, the top end of the spring is fixedly connected to the inner top end of the water inlet distribution assembly, the vertical plate is movably arranged at the top end of the water inlet distribution assembly, a sealing telescopic sleeve is arranged on the outer top end of the water inlet distribution assembly, and the limiting protrusion limits the bottom end of the vertical plate from being completely removed from the inner part of the water inlet distribution assembly.

[0018] In a preferred embodiment, the bottom block is arranged directly above the extension insertion convex shell and has a size suitable for the extension insertion convex shell, the one-way flow structure is arranged to rotate in one direction at the position of the outer water inlet pipe, and the inner top end of the water guide cavity shell is provided with a vertical plate on one side of the bottom block, the vertical plate is provided with a water permeable groove in the middle, and the water permeable groove is closed in the non-moving state of the bottom block.

[0019] The present application has the following advantages:

[0020] 1. The multi-stage filter core for the water purifier is provided with a rotatable cleaning assembly between each filter layer, and the water inlet distribution assembly is arranged at the bottom of the cleaning assembly, so that when the filter core needs to be cleaned, water is supplied through the water inlet distribution assembly, the cleaning water enters the cleaning assembly from the water inlet distribution assembly, and finally is sprayed from the cleaning long pipe, the cleaning long pipe is vertically arranged at the same height as the filter layer, so that the filter core is inserted from the bottom to drive the connecting rotating ring to rotate, and then the cleaning long pipe is driven to rotate between the filter layers, so that the cleaning long pipe not only sprays water to clean the filter layer during rotation, but also scrapes off the accumulated particulate impurities on the filter layer, greatly improving the cleaning effect.

[0021] 2. The filter cartridge of this multi-stage water purifier features a flow-direction limiting plate installed at the bottom of the top ring. This plate is inserted into the outer ring of the filter layer and has multiple small baffles that can be rotated and opened in one direction from the inside out. During normal use, water poured into the middle of the filter cartridge can be squeezed open, allowing for smooth water flow. During cleaning, a long cleaning pipe that sprays water between each filter layer prevents the water from flowing backward, thus avoiding impurities from repeatedly flowing between the multiple filter layers and failing to be discharged effectively, improving the cleaning effect. Simultaneously, water supply from the bottom pulls the entire assembly downward, causing the closed ring to move downward and disengage from the discharge tank. This ensures that the wastewater from the internal cleaning can be directly discharged from the discharge tank at the bottom and finally discharged from the filter cartridge through the wastewater discharge grid, further improving the cleaning effect and efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of a partial three-dimensional structure of the present invention;

[0025] Figure 4 This is a three-dimensional structural diagram showing the connection between the sealing component and the cleaning component of the present invention;

[0026] Figure 5 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the closed component of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B;

[0029] Figure 8 This is a schematic diagram of a partial three-dimensional structure at the bottom of the present invention;

[0030] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point C;

[0031] Figure 10 This is a three-dimensional structural diagram showing the connection between the pull component and the water inlet distribution component of the present invention;

[0032] Figure 11 This is a three-dimensional structural diagram of the pull component of the present invention;

[0033] Figure 12 Fig. 1 is a schematic view of the internal three-dimensional structure of the water inlet distribution assembly of the present application.

[0034] In the figure: 1, top ring; 2, filter layer; 3, closed assembly; 31, first sleeve ring; 32, second sleeve ring; 33, third sleeve ring; 34, discharge groove; 35, plug-in groove; 36, plug rod; 4, extended ring shell; 5, wastewater discharge grid; 6, partition ring plate; 7, butt joint ring; 8, cleaning assembly; 81, water inlet flat tube; 82, connecting ring seat; 83, cleaning long tube; 9, upper sealing assembly; 91, closed ring; 92, butt joint seat; 10, pulling assembly; 101, bottom block; 102, vertical plate; 103, arc-shaped support suspension rod; 104, base; 105, butt joint; 106, spring; 107, limiting protrusion; 11, outer water guide pipe; 12, water inlet distribution assembly; 121, water guide cavity shell; 122, extended plug-in convex shell; 123, outer water inlet pipe; 124, one-way flow structure; 13, bottom sealing plate; 14, connecting rotating ring; 15, flow direction limiting plate. DETAILED DESCRIPTION

[0035] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application, and in addition, the forms of each structure described in the following embodiments are only examples, and the filter cartridge for multi-stage water purifier involved in the present application is not limited to each structure described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0036] Please refer to Figures 1-8 A filter cartridge for multi-stage water purifier, comprising a top ring 1, a filter layer 2 is installed and arranged at the bottom end of the top ring 1, a closed assembly 3 is fixedly installed at the bottom end of the filter layer 2, an extended ring shell 4 is fixedly installed at the bottom end of the closed assembly 3, a wastewater discharge grid 5 is formed at the bottom end of the extended ring shell 4, a partition ring plate 6 is fixedly installed inside the extended ring shell 4, a butt joint ring 7 is movably installed on the partition ring plate 6, a cleaning assembly 8 is movably installed on the closed assembly 3, an upper sealing assembly 9 is fixedly installed at the bottom end of the closed assembly 3, a pulling assembly 10 is installed and arranged at the bottom end of the upper sealing assembly 9, an outer water guide pipe 11 is fixedly installed at the bottom end of the extended ring shell 4, a water inlet distribution assembly 12 is fixedly installed at the bottom end of the outer water guide pipe 11, a bottom sealing plate 13 is fixedly installed inside the bottom end of the filter layer 2, a connecting rotating ring 14 is movably installed on the extended ring shell 4, and a flow direction limiting plate 15 is fixedly installed at the bottom end of the top ring 1.

[0037] Compared with the prior art, the application sets the cleaning assembly 8 which can rotate between each filter layer 2, and the water inlet distribution assembly 12 is arranged through the bottom of the cleaning assembly 8, so that water can be supplied through the water inlet distribution assembly 12 when the filter core needs to be cleaned, the cleaning water enters the cleaning assembly 8 from the water inlet distribution assembly 12, and finally is sprayed from the cleaning long pipe 83 which is vertically arranged at the same height as the filter layer 2, so that the filter core bottom is externally inserted to drive the connection rotating ring 14 to rotate, and then the cleaning long pipe 83 is driven to rotate between the filter layers 2, so that the cleaning long pipe 83 can not only spray water to clean the filter layer 2 during the rotating process, but also can scrape off the accumulated impurities on the filter layer 2, thereby greatly improving the cleaning effect. At the same time, the flow direction limiting plate 15 is arranged at the bottom end of the top ring 1, the flow direction limiting plate 15 is inserted and arranged in close contact with the outer ring surface of the filter layer 2, a plurality of one-way rotating opening small baffles are uniformly arranged on the flow direction limiting plate 15, and the opening direction is rotated outward from the inside, so that the water poured from the middle of the filter core can be normally squeezed open, and the water flows smoothly. When cleaning, the cleaning long pipe 83 which can spray water to clean between each filter layer 2 is arranged, so that the one-way opening small baffles prevent the water from flowing in the reverse direction, thereby avoiding the impurities from repeatedly flowing between the multiple filter layers 2 and not being easily discharged, thereby improving the cleaning effect. At the same time, after the water is supplied from the bottom, the pulling assembly 10 is pulled downward as a whole, so that the closed ring 91 is pulled downward to separate from the inside of the discharge groove 34, thereby ensuring that the internal cleaning sewage can be directly discharged from the bottom discharge groove 34, and finally discharged from the waste water discharge grid 5 to the inside of the filter core, thereby improving the cleaning effect and efficiency.

[0038] Please refer to Figures 1-3 A filter core for a multi-stage water purifier, comprising filter layers 2, the filter layers 2 and the flow direction limiting plate 15 are arranged in close contact with each other, a plurality of small baffles are uniformly arranged on the flow direction limiting plate 15, and the small baffles are arranged in a one-way outward rotating opening manner.

[0039] In this embodiment, it should be noted that during normal use of the filter core, water flows from the middle, and under the pressure of the water flow, the small baffles are squeezed open outward, thereby ensuring the normal flow of the water flow. When cleaning, the cleaning assembly 8 sprays cleaning water between each two adjacent filter layers 2 to clean, so that the one-way opening of the small baffles can ensure that the water flow will not flow in the reverse direction, thereby avoiding the filtered and accumulated impurities on the filter layer 2 from repeatedly flowing between the multiple filter layers 2 and being difficult to discharge, so that the impurities in each layer are washed and discharged from the bottom end, thereby greatly improving the cleaning effect.

[0040] Please refer to Figures 1-5The utility model relates to a filter core for multistage water purifier, including butt joint ring 7, the upper and lower ends of butt joint ring 7 are respectively clamped in the upper and lower ends of the inside rotation of the partition ring plate 6 and are movably arranged, the bottom end of cleaning assembly 8 is inserted in butt joint ring 7 and is fixedly installed, the outside of butt joint ring 7 is fixedly connected with connecting rotating ring 14 through short rod, outer water guide pipe 11 is located between the inside ring of partition ring plate 6 and extension ring shell 4 and is arranged to extend to the inside of ring shell 4, connecting rotating ring 14 is located on the inside ring of extension ring shell 4 and is protruded, connecting rotating ring 14 is clamped on the inside ring of extension ring shell 4 and is movably arranged;

[0041] In the embodiment, it should be pointed out that in the process of cleaning, the outside rotating structure can be clamped on the inside ring of connecting rotating ring 14, and then connecting rotating ring 14 is driven to rotate, so that butt joint ring 7 and cleaning assembly 8 are driven to rotate, and the water sprayed from cleaning assembly 8 can be uniformly sprayed on filter layer 2 in a ring shape, so that the cleaning effect is ensured.

[0042] Please refer to Figures 1-6 The utility model relates to a filter core for multistage water purifier, including closed assembly 3, closed assembly 3 contains first sleeve ring 31, the inside ring of first sleeve ring 31 is provided with second sleeve ring 32, the inside ring of second sleeve ring 32 is provided with third sleeve ring 33, and discharge groove 34 is formed in second sleeve ring 32 and third sleeve ring 33, and the inside ring of first sleeve ring 31 and second sleeve ring 32 is provided with insertion slot 35, and insertion rod 36 is movably installed on the outside ring of second sleeve ring 32 and third sleeve ring 33;

[0043] In the embodiment, it should be pointed out that cleaning assembly 8 is movably arranged between first sleeve ring 31 and second sleeve ring 32 and between second sleeve ring 32 and third sleeve ring 33, the top end of upper sealing assembly 9 is movably and sealingly inserted in discharge groove 34, one side of insertion slot 35 is a slanted groove structure, insertion rod 36 can rotate around the shaft, and a coil spring is sleeved on the rotating shaft, so that insertion rod 36 is movably arranged, when cleaning assembly 8 passes through first sleeve ring 31 and second sleeve ring 32 and second sleeve ring 32 and third sleeve ring 33 during rotation, the normal passing of cleaning assembly 8 is ensured, and after rotating away from the position, insertion rod 36 is clamped into insertion slot 35 again to ensure the structural stability between adjacent first sleeve ring 31 and second sleeve ring 32 and second sleeve ring 32 and third sleeve ring 33.

[0044] Please refer to Figures 1-5 The utility model relates to a filter core for multistage water purifier, including cleaning assembly 8, and cleaning assembly 8 contains water inlet flat pipe 81, the top end of water inlet flat pipe 81 is fixedly installed with connecting ring seat 82, and connecting ring seat 82 is fixedly installed with cleaning long pipe 83;

[0045] In the embodiment, it needs to be explained that the water inlet flat pipe 81 is fixedly inserted in the inner fixed installation of the docking ring 7, the rotating path of the water inlet flat pipe 81 passes through the position of the connecting part of the upper sealing assembly 9 and the pulling assembly 10, the end of the water inlet flat pipe 81 is arranged in the space between the partition ring plate 6 and the extension ring shell 4, the connecting ring seat 82 is rotatably arranged in the inner part of the sealing assembly 3, the cleaning long pipe 83 is arranged in abutment with the filter layer 2, and a plurality of water outlet nozzle openings are arranged on the side of the cleaning long pipe 83 in abutment with the filter layer 2. In this way, in the process of cleaning, the water between the partition ring plate 6 and the docking ring 7 conveyed by the outer water guide pipe 11 is poured into the water inlet flat pipe 81, and then the water is conveyed to the water outlet nozzle in the cleaning long pipe 83 and sprayed out, so that the cleaning of the filter layer 2 is realized. At the same time, the cleaning long pipe 83 is arranged in abutment with the filter layer 2, so that in the process of rotation, the impurity particles docked on the filter layer 2 can be scraped off to the greatest extent, thereby improving the cleaning effect.

[0046] Referring to Figures 5-9 A filter core for a multi-stage water purifier, comprising an upper sealing assembly 9, the upper sealing assembly 9 comprising a sealing ring 91, the bottom end of the sealing ring 91 being fixedly installed with a docking seat 92;

[0047] In the embodiment, it needs to be explained that the sealing ring 91 can be inserted into the discharge groove 34 and sealed, the docking seat 92 is provided with a slot on the side of the pulling assembly 10, and the top end of the pulling assembly 10 is inserted into the slot. In this way, during cleaning, the water flow in the water inlet distribution assembly 12 can drive the pulling assembly 10 to pull down the sealing ring 91, so that the sealing ring 91 is separated from the inside of the discharge groove 34, thereby ensuring that the sewage in the filter layer 2 can be smoothly discharged. The separable docking of the docking seat 92 and the pulling assembly 10 can ensure that the cleaning assembly 8 can normally rotate when passing through the position during rotation.

[0048] Referring to Figures 8-11 A filter core for a multi-stage water purifier, comprising a pulling assembly 10, the pulling assembly 10 comprising a bottom block 101, the top end of the bottom block 101 being fixedly installed with a vertical plate 102, the top end of the vertical plate 102 being fixedly installed with an arc-shaped support suspension rod 103, the top end of the arc-shaped support suspension rod 103 being fixedly installed with a base 104, the base 104 being movably installed with a docking head 105, the top end of the bottom block 101 being fixedly installed with a spring 106 in the middle, and the top end of the bottom block 101 being fixedly installed with a limiting protruding block 107 at both ends;

[0049] In this embodiment, it should be noted that the bottom end of the bottom block 101 is spaced apart from the inner bottom end of the water inlet distribution assembly 12, the base 104 is located on each arc-shaped support suspension rod 103 and is provided in a number greater than or equal to three, the adapter 105 is rotatably arranged on the base 104, and a coil spring is arranged on the rotating shaft. The top end of the spring 106 is fixedly connected to the inner top end of the water inlet distribution assembly 12, the vertical plate 102 is movably arranged at the top end of the water inlet distribution assembly 12, and a sealing telescopic sleeve is arranged outside the top end of the water inlet distribution assembly 12. The limiting protrusion 107 limits the bottom end of the vertical plate 102 from being completely removed from the inside of the water inlet distribution assembly 12. In this way, after water is introduced into the water inlet distribution assembly 12, the water flow can be used to push the bottom block 101 downward until the water flow flows in the water inlet distribution assembly 12 and then enters the cleaning assembly 8 for washing. The docking of the adapter 105 and the docking seat 92 can ensure that the adapter 105 rotates to allow the water inlet flat tube 81 to pass through when the water inlet flat tube 81 rotates through this position, and the adapter 105 automatically rotates and is clamped to the docking seat 92 after passing through, to ensure stable connection between the upper sealing assembly 9 and the pulling assembly 10.

[0050] Please refer to Figures 8-12 A filter cartridge for a multi-stage water purifier, comprising a water inlet distribution assembly 12, the water inlet distribution assembly 12 comprising a water guide cavity shell 121, the bottom end of the water guide cavity shell 121 being fixedly installed with an extended plug-in convex shell 122, the bottom end of the water guide cavity shell 121 being fixedly installed with an outer water inlet pipe 123, and the inside of the water guide cavity shell 121 being fixedly installed with a one-way flow structure 124.

[0051] In this embodiment, it should be noted that the bottom block 101 is arranged directly above the position of the extended plug-in convex shell 122 and the sizes of the two are adapted to each other. The one-way flow structure 124 is arranged to rotate in one direction at the position of the outer water inlet pipe 123. The inside top end of the water guide cavity shell 121 is provided with a vertical plate on one side of the bottom block 101. A water permeable groove is formed in the middle of the vertical plate. The water permeable groove is closed when the bottom block 101 is in a non-moving state. In this way, the water filled into the inside of the water guide cavity shell 121 through the outer water inlet pipe 123 will flow in one direction under the blocking action of the one-way flow structure 124. When it reaches the position of each bottom block 101, it will press the pulling assembly 10 downward under the water pressure in this area, so that the water enters the next area through the water permeable groove, realizing the circulation of the water in the area. During the downward movement, the bottom block 101 will enter the extended plug-in convex shell 122, thereby ensuring the smooth flow of the water flow.

[0052] The working principle is that when cleaning is needed, external water is filled into the water guide cavity shell 121 through the external water inlet pipe 123, and then the water flow flows in one direction under the action of the one-way flow structure 124, and the bottom block 101 is pressed downward into the extension plug-in convex shell 122 one by one, and the bottom block 101 drives the butt joint 105 to pull down the sealing ring 91 and move out of the inside of the bottom end discharge groove 34, thereby opening the bottom end channel inside the extension ring shell 4 and the filter layer 2, and the water flow will flow upward to the inside of the extension ring shell 4 through the outer water guide pipe 11, and then enter the water outlet nozzle of the cleaning long pipe 83 through the water inlet flat pipe 81 and spray out, realizing the spray cleaning of the filter layer 2, and at the same time, the outside is inserted into the rotatable driving structure and connected with the extension ring 14, driving the extension ring 14 and the cleaning assembly 8 to rotate, and the rotation of the cleaning long pipe 83 will also scrape and clean the surface of the filter layer 2, realizing cleaning combined with the sprayed water, and the sewage after cleaning is discharged from the bottom end discharge groove 34 into the waste water discharge grid 5 and finally discharged, and the water inlet flat pipe 81 will rotate when passing through the position of the butt joint 105 in the rotating process, and then automatically rotate back to ensure the connection stability, and the rotation of the cleaning long pipe 83 also has the same effect on the pushing of the plug rod 36.

[0053] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A filter element for a multi-stage water purifier, comprising a top ring (1), characterized in that: A filter layer (2) is installed at the bottom end of the top ring (1), and a sealing component (3) is fixedly installed at the bottom end of the filter layer (2). An extension ring shell (4) is fixedly installed at the bottom end of the sealing component (3). A wastewater discharge grid (5) is opened at the bottom end of the extension ring shell (4). A partition ring plate (6) is fixedly installed inside the extension ring shell (4). A docking ring (7) is movably installed on the partition ring plate (6). A cleaning component (8) is movably installed on the sealing component (3). An upper sealing assembly (9) is fixedly installed at the bottom end. A pulling assembly (10) is installed at the bottom end of the upper sealing assembly (9). An external water guide pipe (11) is fixedly installed at the bottom end of the extension ring shell (4). An inlet water distribution assembly (12) is fixedly installed at the bottom end of the external water guide pipe (11). A bottom sealing plate (13) is fixedly installed inside the bottom end of the filter layer (2). A connecting rotating ring (14) is movably installed on the extension ring shell (4). A flow direction limiting plate (15) is fixedly installed at the bottom end of the top ring (1). The closing component (3) includes a first collar (31), a second collar (32) is installed on the inner ring of the first collar (31), a third collar (33) is installed on the inner ring of the second collar (32), a discharge groove (34) is opened on the second collar (32) and the third collar (33), a insertion groove (35) is opened on the inner ring of the first collar (31) and the second collar (32), and a plug rod (36) is movably installed on the outer ring of the second collar (32) and the third collar (33); The cleaning assembly (8) includes a water inlet flat tube (81), a connecting ring seat (82) is fixedly installed at the top end of the water inlet flat tube (81), and a cleaning long tube (83) is fixedly installed at the top end of the connecting ring seat (82). The upper sealing assembly (9) includes a sealing ring (91), and a docking seat (92) is fixedly installed at the bottom end of the sealing ring (91); The pulling assembly (10) includes a base block (101), a vertical plate (102) is fixedly installed on the top of the base block (101), an arc-shaped support suspension rod (103) is fixedly installed on the top of the vertical plate (102), a base (104) is fixedly installed on the top of the arc-shaped support suspension rod (103), a connector (105) is movably installed on the base (104), a spring (106) is fixedly installed in the middle of the top of the base block (101), and limit protrusions (107) are fixedly installed at both ends of the top of the base block (101). The water inlet distribution assembly (12) includes a water guide cavity shell (121), an extended plug-in protrusion shell (122) is fixedly installed at the bottom end of the water guide cavity shell (121), an external water inlet pipe (123) is fixedly installed at the bottom end of the water guide cavity shell (121), and a unidirectional flow structure (124) is fixedly installed inside the water guide cavity shell (121).

2. The filter element for a multi-stage water purifier according to claim 1, characterized in that: The filter layer (2) and the flow direction limiting plate (15) are interlocked and attached to each other. Multiple small baffles are evenly arranged on the flow direction limiting plate (15), and the small baffles are unidirectionally rotated outward to open.

3. The filter element for a multi-stage water purifier according to claim 1, characterized in that: The upper and lower ends of the docking ring (7) are respectively engaged in the upper and lower ends of the partition ring plate (6) and rotated. The bottom end of the cleaning component (8) is inserted into the docking ring (7) and fixedly installed. The outer side of the docking ring (7) is fixedly connected to the connecting rotating ring (14) through a short rod.

4. A filter element for a multi-stage water purifier according to claim 3, characterized in that: The external water guide pipe (11) is located between the partition ring plate (6) and the inner ring of the extension ring shell (4) and extends into the interior of the ring shell (4). The connecting rotating ring (14) is located on the inner ring of the extension ring shell (4) and protrudes out. The connecting rotating ring (14) is engaged with the inner ring of the extension ring shell (4) and rotates.

5. A filter element for a multi-stage water purifier according to claim 1, characterized in that: The cleaning assembly (8) is rotatably positioned between the first ring (31) and the second ring (32) and the second ring (32) and the third ring (33). The top of the upper sealing assembly (9) is movably sealed and inserted into the discharge groove (34). One side of the insertion groove (35) is a slanted groove structure. The insertion rod (36) can rotate around the axis and a coil spring is sleeved on the rotating axis.

6. A filter element for a multi-stage water purifier according to claim 1, characterized in that: The inlet flat tube (81) is fixedly inserted into the docking ring (7) and fixedly installed. The rotation path of the inlet flat tube (81) passes through the connection position of the upper sealing assembly (9) and the pulling assembly (10). The end of the inlet flat tube (81) is located in the space between the partition ring plate (6) and the extension ring shell (4). The connecting ring seat (82) is located inside the sealing assembly (3) and is rotatably arranged. The cleaning long tube (83) is attached to the filter layer (2) and multiple water outlet nozzles are provided on the side of the cleaning long tube (83) attached to the filter layer (2).

7. A filter element for a multi-stage water purifier according to claim 1, characterized in that: The closing ring (91) can be inserted into the discharge groove (34) for sealing. The docking seat (92) is located on the side of the pull assembly (10) where it is docked and has a slot. The top of the pull assembly (10) is inserted into the slot.

8. A filter element for a multi-stage water purifier according to claim 1, characterized in that: The bottom end of the base block (101) is spaced apart from the bottom end of the water inlet distribution assembly (12). The base (104) is provided on each arc-shaped support rod (103) in a number greater than or equal to three. The connector (105) is rotatably mounted on the base (104) and a coil spring is provided on the rotating shaft. The top side of the connector (105) is provided with a plug that can be connected to the slot on the docking seat (92). The top end of the spring (106) is fixedly connected to the top end of the water inlet distribution assembly (12). The upright plate (102) is inserted into the top end of the water inlet distribution assembly (12) and is movably mounted. The upright plate (102) and the top end of the water inlet distribution assembly (12) are provided with a sealing telescopic sleeve. The limiting protrusion (107) restricts the bottom end of the upright plate (102) from being completely moved out of the water inlet distribution assembly (12).

9. A filter element for a multi-stage water purifier according to claim 1, characterized in that: The bottom block (101) is positioned directly above the extended plug-in protrusion (122), and the two are sized to match. The unidirectional flow structure (124) rotates unidirectionally at the location of the external water inlet pipe (123). The top of the inner end of the water guide cavity shell (121) is provided with a vertical plate on one side of the bottom block (101). A water permeable groove is provided in the middle of the vertical plate. The water permeable groove is closed when the bottom block (101) is not moving.

Images